Update Linux to v5.10.109

Sourced from [1]

[1] https://cdn.kernel.org/pub/linux/kernel/v5.x/linux-5.10.109.tar.xz

Change-Id: I19bca9fc6762d4e63bcf3e4cba88bbe560d9c76c
Signed-off-by: Olivier Deprez <olivier.deprez@arm.com>
diff --git a/scripts/.gitignore b/scripts/.gitignore
index 17f8cef..a6c1131 100644
--- a/scripts/.gitignore
+++ b/scripts/.gitignore
@@ -1,14 +1,11 @@
-#
-# Generated files
-#
+# SPDX-License-Identifier: GPL-2.0-only
 bin2c
-conmakehash
 kallsyms
-pnmtologo
 unifdef
 recordmcount
-sortextable
+sorttable
 asn1_compiler
 extract-cert
 sign-file
 insert-sys-cert
+/module.lds
diff --git a/scripts/Kbuild.include b/scripts/Kbuild.include
index b14a7d4..0d6e118 100644
--- a/scripts/Kbuild.include
+++ b/scripts/Kbuild.include
@@ -16,7 +16,7 @@
 dot-target = $(dir $@).$(notdir $@)
 
 ###
-# The temporary file to save gcc -MD generated dependencies must not
+# The temporary file to save gcc -MMD generated dependencies must not
 # contain a comma
 depfile = $(subst $(comma),_,$(dot-target).d)
 
@@ -33,6 +33,10 @@
 escsq = $(subst $(squote),'\$(squote)',$1)
 
 ###
+# Quote a string to pass it to C files. foo => '"foo"'
+stringify = $(squote)$(quote)$1$(quote)$(squote)
+
+###
 # Easy method for doing a status message
        kecho := :
  quiet_kecho := echo
@@ -52,8 +56,6 @@
 # - If no file exist it is created
 # - If the content differ the new file is used
 # - If they are equal no change, and no timestamp update
-# - stdin is piped in from the first prerequisite ($<) so one has
-#   to specify a valid file as first prerequisite (often the kbuild file)
 define filechk
 	$(Q)set -e;						\
 	mkdir -p $(dir $@);					\
@@ -115,25 +117,21 @@
 __cc-option = $(call try-run,\
 	$(1) -Werror $(2) $(3) -c -x c /dev/null -o "$$TMP",$(3),$(4))
 
-# Do not attempt to build with gcc plugins during cc-option tests.
-# (And this uses delayed resolution so the flags will be up to date.)
-CC_OPTION_CFLAGS = $(filter-out $(GCC_PLUGINS_CFLAGS),$(KBUILD_CFLAGS))
-
 # cc-option
 # Usage: cflags-y += $(call cc-option,-march=winchip-c6,-march=i586)
 
 cc-option = $(call __cc-option, $(CC),\
-	$(KBUILD_CPPFLAGS) $(CC_OPTION_CFLAGS),$(1),$(2))
+	$(KBUILD_CPPFLAGS) $(KBUILD_CFLAGS),$(1),$(2))
 
 # cc-option-yn
 # Usage: flag := $(call cc-option-yn,-march=winchip-c6)
 cc-option-yn = $(call try-run,\
-	$(CC) -Werror $(KBUILD_CPPFLAGS) $(CC_OPTION_CFLAGS) $(1) -c -x c /dev/null -o "$$TMP",y,n)
+	$(CC) -Werror $(KBUILD_CPPFLAGS) $(KBUILD_CFLAGS) $(1) -c -x c /dev/null -o "$$TMP",y,n)
 
 # cc-disable-warning
 # Usage: cflags-y += $(call cc-disable-warning,unused-but-set-variable)
 cc-disable-warning = $(call try-run,\
-	$(CC) -Werror $(KBUILD_CPPFLAGS) $(CC_OPTION_CFLAGS) -W$(strip $(1)) -c -x c /dev/null -o "$$TMP",-Wno-$(strip $(1)))
+	$(CC) -Werror $(KBUILD_CPPFLAGS) $(KBUILD_CFLAGS) -W$(strip $(1)) -c -x c /dev/null -o "$$TMP",-Wno-$(strip $(1)))
 
 # cc-ifversion
 # Usage:  EXTRA_CFLAGS += $(call cc-ifversion, -lt, 0402, -O1)
@@ -160,12 +158,6 @@
 build := -f $(srctree)/scripts/Makefile.build obj
 
 ###
-# Shorthand for $(Q)$(MAKE) -f scripts/Makefile.modbuiltin obj=
-# Usage:
-# $(Q)$(MAKE) $(modbuiltin)=dir
-modbuiltin := -f $(srctree)/scripts/Makefile.modbuiltin obj
-
-###
 # Shorthand for $(Q)$(MAKE) -f scripts/Makefile.dtbinst obj=
 # Usage:
 # $(Q)$(MAKE) $(dtbinst)=dir
@@ -215,17 +207,20 @@
 # (needed for the shell)
 make-cmd = $(call escsq,$(subst $(pound),$$(pound),$(subst $$,$$$$,$(cmd_$(1)))))
 
-# Find any prerequisites that is newer than target or that does not exist.
+# Find any prerequisites that are newer than target or that do not exist.
+# (This is not true for now; $? should contain any non-existent prerequisites,
+# but it does not work as expected when .SECONDARY is present. This seems a bug
+# of GNU Make.)
 # PHONY targets skipped in both cases.
-any-prereq = $(filter-out $(PHONY),$?)$(filter-out $(PHONY) $(wildcard $^),$^)
+newer-prereqs = $(filter-out $(PHONY),$?)
 
 # Execute command if command has changed or prerequisite(s) are updated.
-if_changed = $(if $(any-prereq)$(cmd-check),                                 \
+if_changed = $(if $(newer-prereqs)$(cmd-check),                              \
 	$(cmd);                                                              \
 	printf '%s\n' 'cmd_$@ := $(make-cmd)' > $(dot-target).cmd, @:)
 
 # Execute the command and also postprocess generated .d dependencies file.
-if_changed_dep = $(if $(any-prereq)$(cmd-check),$(cmd_and_fixdep),@:)
+if_changed_dep = $(if $(newer-prereqs)$(cmd-check),$(cmd_and_fixdep),@:)
 
 cmd_and_fixdep =                                                             \
 	$(cmd);                                                              \
@@ -235,7 +230,7 @@
 # Usage: $(call if_changed_rule,foo)
 # Will check if $(cmd_foo) or any of the prerequisites changed,
 # and if so will execute $(rule_foo).
-if_changed_rule = $(if $(any-prereq)$(cmd-check),$(rule_$(1)),@:)
+if_changed_rule = $(if $(newer-prereqs)$(cmd-check),$(rule_$(1)),@:)
 
 ###
 # why - tell why a target got built
@@ -260,7 +255,7 @@
 why =                                                                        \
     $(if $(filter $@, $(PHONY)),- due to target is PHONY,                    \
         $(if $(wildcard $@),                                                 \
-            $(if $(any-prereq),- due to: $(any-prereq),                      \
+            $(if $(newer-prereqs),- due to: $(newer-prereqs),                \
                 $(if $(cmd-check),                                           \
                     $(if $(cmd_$@),- due to command line change,             \
                         $(if $(filter $@, $(targets)),                       \
diff --git a/scripts/Kconfig.include b/scripts/Kconfig.include
index 77a69ba..a5fe72c 100644
--- a/scripts/Kconfig.include
+++ b/scripts/Kconfig.include
@@ -25,12 +25,16 @@
 
 # $(cc-option,<flag>)
 # Return y if the compiler supports <flag>, n otherwise
-cc-option = $(success,$(CC) -Werror $(CLANG_FLAGS) $(1) -S -x c /dev/null -o /dev/null)
+cc-option = $(success,mkdir .tmp_$$$$; trap "rm -rf .tmp_$$$$" EXIT; $(CC) -Werror $(CLANG_FLAGS) $(1) -c -x c /dev/null -o .tmp_$$$$/tmp.o)
 
 # $(ld-option,<flag>)
 # Return y if the linker supports <flag>, n otherwise
 ld-option = $(success,$(LD) -v $(1))
 
+# $(as-instr,<instr>)
+# Return y if the assembler supports <instr>, n otherwise
+as-instr = $(success,printf "%b\n" "$(1)" | $(CC) $(CLANG_FLAGS) -c -x assembler -o /dev/null -)
+
 # check if $(CC) and $(LD) exist
 $(error-if,$(failure,command -v $(CC)),compiler '$(CC)' not found)
 $(error-if,$(failure,command -v $(LD)),linker '$(LD)' not found)
@@ -38,9 +42,6 @@
 # Fail if the linker is gold as it's not capable of linking the kernel proper
 $(error-if,$(success, $(LD) -v | grep -q gold), gold linker '$(LD)' not supported)
 
-# gcc version including patch level
-gcc-version := $(shell,$(srctree)/scripts/gcc-version.sh $(CC))
-
 # machine bit flags
 #  $(m32-flag): -m32 if the compiler supports it, or an empty string otherwise.
 #  $(m64-flag): -m64 if the compiler supports it, or an empty string otherwise.
diff --git a/scripts/Makefile b/scripts/Makefile
index b4b7d8b..9adb6d2 100644
--- a/scripts/Makefile
+++ b/scripts/Makefile
@@ -2,39 +2,41 @@
 ###
 # scripts contains sources for various helper programs used throughout
 # the kernel for the build process.
-# ---------------------------------------------------------------------------
-# kallsyms:      Find all symbols in vmlinux
-# pnmttologo:    Convert pnm files to logo files
-# conmakehash:   Create chartable
-# conmakehash:	 Create arrays for initializing the kernel console tables
-
-HOST_EXTRACFLAGS += -I$(srctree)/tools/include
 
 CRYPTO_LIBS = $(shell pkg-config --libs libcrypto 2> /dev/null || echo -lcrypto)
 CRYPTO_CFLAGS = $(shell pkg-config --cflags libcrypto 2> /dev/null)
 
-hostprogs-$(CONFIG_BUILD_BIN2C)  += bin2c
-hostprogs-$(CONFIG_KALLSYMS)     += kallsyms
-hostprogs-$(CONFIG_LOGO)         += pnmtologo
-hostprogs-$(CONFIG_VT)           += conmakehash
-hostprogs-$(BUILD_C_RECORDMCOUNT) += recordmcount
-hostprogs-$(CONFIG_BUILDTIME_EXTABLE_SORT) += sortextable
-hostprogs-$(CONFIG_ASN1)	 += asn1_compiler
-hostprogs-$(CONFIG_MODULE_SIG_FORMAT) += sign-file
-hostprogs-$(CONFIG_SYSTEM_TRUSTED_KEYRING) += extract-cert
-hostprogs-$(CONFIG_SYSTEM_EXTRA_CERTIFICATE) += insert-sys-cert
+hostprogs-always-$(CONFIG_BUILD_BIN2C)			+= bin2c
+hostprogs-always-$(CONFIG_KALLSYMS)			+= kallsyms
+hostprogs-always-$(BUILD_C_RECORDMCOUNT)		+= recordmcount
+hostprogs-always-$(CONFIG_BUILDTIME_TABLE_SORT)		+= sorttable
+hostprogs-always-$(CONFIG_ASN1)				+= asn1_compiler
+hostprogs-always-$(CONFIG_MODULE_SIG_FORMAT)		+= sign-file
+hostprogs-always-$(CONFIG_SYSTEM_TRUSTED_KEYRING)	+= extract-cert
+hostprogs-always-$(CONFIG_SYSTEM_EXTRA_CERTIFICATE)	+= insert-sys-cert
+hostprogs-always-$(CONFIG_SYSTEM_REVOCATION_LIST)	+= extract-cert
 
-HOSTCFLAGS_sortextable.o = -I$(srctree)/tools/include
+HOSTCFLAGS_sorttable.o = -I$(srctree)/tools/include
 HOSTCFLAGS_asn1_compiler.o = -I$(srctree)/include
 HOSTCFLAGS_sign-file.o = $(CRYPTO_CFLAGS)
 HOSTLDLIBS_sign-file = $(CRYPTO_LIBS)
 HOSTCFLAGS_extract-cert.o = $(CRYPTO_CFLAGS)
 HOSTLDLIBS_extract-cert = $(CRYPTO_LIBS)
 
-always		:= $(hostprogs-y) $(hostprogs-m)
+ifdef CONFIG_UNWINDER_ORC
+ifeq ($(ARCH),x86_64)
+ARCH := x86
+endif
+HOSTCFLAGS_sorttable.o += -I$(srctree)/tools/arch/x86/include
+HOSTCFLAGS_sorttable.o += -DUNWINDER_ORC_ENABLED
+HOSTLDLIBS_sorttable = -lpthread
+endif
 
-# The following hostprogs-y programs are only build on demand
-hostprogs-y += unifdef
+# The following programs are only built on demand
+hostprogs += unifdef
+
+# The module linker script is preprocessed on demand
+targets += module.lds
 
 subdir-$(CONFIG_GCC_PLUGINS) += gcc-plugins
 subdir-$(CONFIG_MODVERSIONS) += genksyms
diff --git a/scripts/Makefile.build b/scripts/Makefile.build
index 1261f75..8bd4e67 100644
--- a/scripts/Makefile.build
+++ b/scripts/Makefile.build
@@ -16,6 +16,8 @@
 lib-y :=
 lib-m :=
 always :=
+always-y :=
+always-m :=
 targets :=
 subdir-y :=
 subdir-m :=
@@ -43,11 +45,20 @@
 
 include scripts/Makefile.lib
 
-# Do not include host rules unless needed
-ifneq ($(hostprogs-y)$(hostprogs-m)$(hostlibs-y)$(hostlibs-m)$(hostcxxlibs-y)$(hostcxxlibs-m),)
+# Do not include hostprogs rules unless needed.
+# $(sort ...) is used here to remove duplicated words and excessive spaces.
+hostprogs := $(sort $(hostprogs))
+ifneq ($(hostprogs),)
 include scripts/Makefile.host
 endif
 
+# Do not include userprogs rules unless needed.
+# $(sort ...) is used here to remove duplicated words and excessive spaces.
+userprogs := $(sort $(userprogs))
+ifneq ($(userprogs),)
+include scripts/Makefile.userprogs
+endif
+
 ifndef obj
 $(warning kbuild: Makefile.build is included improperly)
 endif
@@ -61,20 +72,27 @@
 
 # ===========================================================================
 
+# subdir-builtin and subdir-modorder may contain duplications. Use $(sort ...)
+subdir-builtin := $(sort $(filter %/built-in.a, $(real-obj-y)))
+subdir-modorder := $(sort $(filter %/modules.order, $(obj-m)))
+
+targets-for-builtin := $(extra-y)
+
 ifneq ($(strip $(lib-y) $(lib-m) $(lib-)),)
-lib-target := $(obj)/lib.a
-real-obj-y += $(obj)/lib-ksyms.o
+targets-for-builtin += $(obj)/lib.a
 endif
 
-ifneq ($(strip $(real-obj-y) $(need-builtin)),)
-builtin-target := $(obj)/built-in.a
+ifdef need-builtin
+targets-for-builtin += $(obj)/built-in.a
 endif
 
-ifeq ($(CONFIG_MODULES)$(need-modorder),y1)
-modorder-target := $(obj)/modules.order
+targets-for-modules := $(patsubst %.o, %.mod, $(filter %.o, $(obj-m)))
+
+ifdef need-modorder
+targets-for-modules += $(obj)/modules.order
 endif
 
-mod-targets := $(patsubst %.o, %.mod, $(obj-m))
+targets += $(targets-for-builtin) $(targets-for-modules)
 
 # Linus' kernel sanity checking tool
 ifeq ($(KBUILD_CHECKSRC),1)
@@ -93,7 +111,7 @@
 # ---------------------------------------------------------------------------
 
 quiet_cmd_cc_s_c = CC $(quiet_modtag)  $@
-      cmd_cc_s_c = $(CC) $(filter-out $(DEBUG_CFLAGS), $(c_flags)) $(DISABLE_LTO) -fverbose-asm -S -o $@ $<
+      cmd_cc_s_c = $(CC) $(filter-out $(DEBUG_CFLAGS), $(c_flags)) -fverbose-asm -S -o $@ $<
 
 $(obj)/%.s: $(src)/%.c FORCE
 	$(call if_changed_dep,cc_s_c)
@@ -270,8 +288,6 @@
 $(obj)/%.mod: $(obj)/%.o FORCE
 	$(call if_changed,mod)
 
-targets += $(mod-targets)
-
 quiet_cmd_cc_lst_c = MKLST   $@
       cmd_cc_lst_c = $(CC) $(c_flags) -g -c -o $*.o $< && \
 		     $(CONFIG_SHELL) $(srctree)/scripts/makelst $*.o \
@@ -344,8 +360,9 @@
 $(obj)/%.o: $(src)/%.S $$(objtool_dep) FORCE
 	$(call if_changed_rule,as_o_S)
 
-targets += $(filter-out $(subdir-obj-y), $(real-obj-y)) $(real-obj-m) $(lib-y)
-targets += $(extra-y) $(MAKECMDGOALS) $(always)
+targets += $(filter-out $(subdir-builtin), $(real-obj-y))
+targets += $(filter-out $(subdir-modorder), $(real-obj-m))
+targets += $(lib-y) $(always-y) $(MAKECMDGOALS)
 
 # Linker scripts preprocessor (.lds.S -> .lds)
 # ---------------------------------------------------------------------------
@@ -369,60 +386,40 @@
 # ---------------------------------------------------------------------------
 
 # To build objects in subdirs, we need to descend into the directories
-$(sort $(subdir-obj-y)): $(subdir-ym) ;
+$(subdir-builtin): $(obj)/%/built-in.a: $(obj)/% ;
+$(subdir-modorder): $(obj)/%/modules.order: $(obj)/% ;
 
 #
 # Rule to compile a set of .o files into one .a file (without symbol table)
 #
-ifdef builtin-target
 
 quiet_cmd_ar_builtin = AR      $@
       cmd_ar_builtin = rm -f $@; $(AR) cDPrST $@ $(real-prereqs)
 
-$(builtin-target): $(real-obj-y) FORCE
+$(obj)/built-in.a: $(real-obj-y) FORCE
 	$(call if_changed,ar_builtin)
 
-targets += $(builtin-target)
-endif # builtin-target
-
 #
 # Rule to create modules.order file
 #
 # Create commands to either record .ko file or cat modules.order from
 # a subdirectory
-$(modorder-target): $(subdir-ym) FORCE
-	$(Q){ $(foreach m, $(modorder), \
-	$(if $(filter %/modules.order, $m), cat $m, echo $m);) :; } \
+# Add $(obj-m) as the prerequisite to avoid updating the timestamp of
+# modules.order unless contained modules are updated.
+
+cmd_modules_order = { $(foreach m, $(real-prereqs), \
+	$(if $(filter %/modules.order, $m), cat $m, echo $(patsubst %.o,%.ko,$m));) :; } \
 	| $(AWK) '!x[$$0]++' - > $@
 
+$(obj)/modules.order: $(obj-m) FORCE
+	$(call if_changed,modules_order)
+
 #
 # Rule to compile a set of .o files into one .a file (with symbol table)
 #
-ifdef lib-target
-
-$(lib-target): $(lib-y) FORCE
+$(obj)/lib.a: $(lib-y) FORCE
 	$(call if_changed,ar)
 
-targets += $(lib-target)
-
-dummy-object = $(obj)/.lib_exports.o
-ksyms-lds = $(dot-target).lds
-
-quiet_cmd_export_list = EXPORTS $@
-cmd_export_list = $(OBJDUMP) -h $< | \
-	sed -ne '/___ksymtab/s/.*+\([^ ]*\).*/EXTERN(\1)/p' >$(ksyms-lds);\
-	rm -f $(dummy-object);\
-	echo | $(CC) $(a_flags) -c -o $(dummy-object) -x assembler -;\
-	$(LD) $(ld_flags) -r -o $@ -T $(ksyms-lds) $(dummy-object);\
-	rm $(dummy-object) $(ksyms-lds)
-
-$(obj)/lib-ksyms.o: $(lib-target) FORCE
-	$(call if_changed,export_list)
-
-targets += $(obj)/lib-ksyms.o
-
-endif
-
 # NOTE:
 # Do not replace $(filter %.o,^) with $(real-prereqs). When a single object
 # module is turned into a multi object module, $^ will contain header file
@@ -457,17 +454,20 @@
 
 ifdef single-build
 
+KBUILD_SINGLE_TARGETS := $(filter $(obj)/%, $(KBUILD_SINGLE_TARGETS))
+
 curdir-single := $(sort $(foreach x, $(KBUILD_SINGLE_TARGETS), \
 			$(if $(filter $(x) $(basename $(x)).o, $(targets)), $(x))))
 
 # Handle single targets without any rule: show "Nothing to be done for ..." or
 # "No rule to make target ..." depending on whether the target exists.
 unknown-single := $(filter-out $(addsuffix /%, $(subdir-ym)), \
-			$(filter $(obj)/%, \
-				$(filter-out $(curdir-single), \
-					$(KBUILD_SINGLE_TARGETS))))
+			$(filter-out $(curdir-single), $(KBUILD_SINGLE_TARGETS)))
 
-__build: $(curdir-single) $(subdir-ym)
+single-subdirs := $(foreach d, $(subdir-ym), \
+			$(if $(filter $(d)/%, $(KBUILD_SINGLE_TARGETS)), $(d)))
+
+__build: $(curdir-single) $(single-subdirs)
 ifneq ($(unknown-single),)
 	$(Q)$(MAKE) -f /dev/null $(unknown-single)
 endif
@@ -482,9 +482,9 @@
 
 else
 
-__build: $(if $(KBUILD_BUILTIN),$(builtin-target) $(lib-target) $(extra-y)) \
-	 $(if $(KBUILD_MODULES),$(obj-m) $(mod-targets) $(modorder-target)) \
-	 $(subdir-ym) $(always)
+__build: $(if $(KBUILD_BUILTIN), $(targets-for-builtin)) \
+	 $(if $(KBUILD_MODULES), $(targets-for-modules)) \
+	 $(subdir-ym) $(always-y)
 	@:
 
 endif
@@ -496,8 +496,8 @@
 $(subdir-ym):
 	$(Q)$(MAKE) $(build)=$@ \
 	$(if $(filter $@/, $(KBUILD_SINGLE_TARGETS)),single-build=) \
-	need-builtin=$(if $(filter $@/built-in.a, $(subdir-obj-y)),1) \
-	need-modorder=$(if $(need-modorder),$(if $(filter $@/modules.order, $(modorder)),1))
+	need-builtin=$(if $(filter $@/built-in.a, $(subdir-builtin)),1) \
+	need-modorder=$(if $(filter $@/modules.order, $(subdir-modorder)),1)
 
 # Add FORCE to the prequisites of a target to force it to be always rebuilt.
 # ---------------------------------------------------------------------------
@@ -515,15 +515,13 @@
 
 -include $(foreach f,$(existing-targets),$(dir $(f)).$(notdir $(f)).cmd)
 
-ifdef building_out_of_srctree
 # Create directories for object files if they do not exist
-obj-dirs := $(sort $(obj) $(patsubst %/,%, $(dir $(targets))))
+obj-dirs := $(sort $(patsubst %/,%, $(dir $(targets))))
 # If targets exist, their directories apparently exist. Skip mkdir.
 existing-dirs := $(sort $(patsubst %/,%, $(dir $(existing-targets))))
 obj-dirs := $(strip $(filter-out $(existing-dirs), $(obj-dirs)))
 ifneq ($(obj-dirs),)
 $(shell mkdir -p $(obj-dirs))
 endif
-endif
 
 .PHONY: $(PHONY)
diff --git a/scripts/Makefile.clean b/scripts/Makefile.clean
index e367eb9..d9e0cea 100644
--- a/scripts/Makefile.clean
+++ b/scripts/Makefile.clean
@@ -27,11 +27,15 @@
 # build a list of files to remove, usually relative to the current
 # directory
 
-__clean-files	:= $(extra-y) $(extra-m) $(extra-)       \
-		   $(always) $(targets) $(clean-files)   \
-		   $(hostprogs-y) $(hostprogs-m) $(hostprogs-) \
-		   $(hostlibs-y) $(hostlibs-m) $(hostlibs-) \
-		   $(hostcxxlibs-y) $(hostcxxlibs-m)
+__clean-files	:= \
+	$(clean-files) $(targets) $(hostprogs) $(userprogs) \
+	$(extra-y) $(extra-m) $(extra-) \
+	$(always-y) $(always-m) $(always-) \
+	$(hostprogs-always-y) $(hostprogs-always-m) $(hostprogs-always-) \
+	$(userprogs-always-y) $(userprogs-always-m) $(userprogs-always-)
+
+# deprecated
+__clean-files	+= $(always) $(hostprogs-y) $(hostprogs-m) $(hostprogs-)
 
 __clean-files   := $(filter-out $(no-clean-files), $(__clean-files))
 
diff --git a/scripts/Makefile.dtbinst b/scripts/Makefile.dtbinst
index 7301ab5..50d580d 100644
--- a/scripts/Makefile.dtbinst
+++ b/scripts/Makefile.dtbinst
@@ -13,28 +13,24 @@
 PHONY := __dtbs_install
 __dtbs_install:
 
-export dtbinst_root ?= $(obj)
-
 include include/config/auto.conf
 include scripts/Kbuild.include
 include $(src)/Makefile
 
-dtbinst-files	:= $(sort $(dtb-y) $(if $(CONFIG_OF_ALL_DTBS), $(dtb-)))
-dtbinst-dirs	:= $(subdir-y) $(subdir-m)
+dtbs    := $(addprefix $(dst)/, $(dtb-y) $(if $(CONFIG_OF_ALL_DTBS),$(dtb-)))
+subdirs := $(addprefix $(obj)/, $(subdir-y) $(subdir-m))
 
-# Helper targets for Installing DTBs into the boot directory
-quiet_cmd_dtb_install =	INSTALL $<
-      cmd_dtb_install =	mkdir -p $(2); cp $< $(2)
+__dtbs_install: $(dtbs) $(subdirs)
+	@:
 
-install-dir = $(patsubst $(dtbinst_root)%,$(INSTALL_DTBS_PATH)%,$(obj))
+quiet_cmd_dtb_install = INSTALL $@
+      cmd_dtb_install = install -D $< $@
 
-$(dtbinst-files): %.dtb: $(obj)/%.dtb
-	$(call cmd,dtb_install,$(install-dir))
+$(dst)/%.dtb: $(obj)/%.dtb
+	$(call cmd,dtb_install)
 
-$(dtbinst-dirs):
-	$(Q)$(MAKE) $(dtbinst)=$(obj)/$@
-
-PHONY += $(dtbinst-files) $(dtbinst-dirs)
-__dtbs_install: $(dtbinst-files) $(dtbinst-dirs)
+PHONY += $(subdirs)
+$(subdirs):
+	$(Q)$(MAKE) $(dtbinst)=$@ dst=$(patsubst $(obj)/%,$(dst)/%,$@)
 
 .PHONY: $(PHONY)
diff --git a/scripts/Makefile.extrawarn b/scripts/Makefile.extrawarn
index ca08f2f..23d3967 100644
--- a/scripts/Makefile.extrawarn
+++ b/scripts/Makefile.extrawarn
@@ -35,6 +35,7 @@
 # The following turn off the warnings enabled by -Wextra
 KBUILD_CFLAGS += -Wno-missing-field-initializers
 KBUILD_CFLAGS += -Wno-sign-compare
+KBUILD_CFLAGS += -Wno-type-limits
 
 KBUILD_CPPFLAGS += -DKBUILD_EXTRA_WARN1
 
@@ -49,6 +50,8 @@
 KBUILD_CFLAGS += -Wno-sign-compare
 KBUILD_CFLAGS += -Wno-format-zero-length
 KBUILD_CFLAGS += $(call cc-disable-warning, pointer-to-enum-cast)
+KBUILD_CFLAGS += -Wno-tautological-constant-out-of-range-compare
+KBUILD_CFLAGS += $(call cc-disable-warning, unaligned-access)
 endif
 
 endif
@@ -58,13 +61,12 @@
 #
 ifneq ($(findstring 2, $(KBUILD_EXTRA_WARN)),)
 
-KBUILD_CFLAGS += -Wcast-align
 KBUILD_CFLAGS += -Wdisabled-optimization
 KBUILD_CFLAGS += -Wnested-externs
 KBUILD_CFLAGS += -Wshadow
 KBUILD_CFLAGS += $(call cc-option, -Wlogical-op)
 KBUILD_CFLAGS += -Wmissing-field-initializers
-KBUILD_CFLAGS += -Wsign-compare
+KBUILD_CFLAGS += -Wtype-limits
 KBUILD_CFLAGS += $(call cc-option, -Wmaybe-uninitialized)
 KBUILD_CFLAGS += $(call cc-option, -Wunused-macros)
 
@@ -78,12 +80,14 @@
 ifneq ($(findstring 3, $(KBUILD_EXTRA_WARN)),)
 
 KBUILD_CFLAGS += -Wbad-function-cast
+KBUILD_CFLAGS += -Wcast-align
 KBUILD_CFLAGS += -Wcast-qual
 KBUILD_CFLAGS += -Wconversion
 KBUILD_CFLAGS += -Wpacked
 KBUILD_CFLAGS += -Wpadded
 KBUILD_CFLAGS += -Wpointer-arith
 KBUILD_CFLAGS += -Wredundant-decls
+KBUILD_CFLAGS += -Wsign-compare
 KBUILD_CFLAGS += -Wswitch-default
 KBUILD_CFLAGS += $(call cc-option, -Wpacked-bitfield-compat)
 
diff --git a/scripts/Makefile.gcc-plugins b/scripts/Makefile.gcc-plugins
index 5f7df50..4aad284 100644
--- a/scripts/Makefile.gcc-plugins
+++ b/scripts/Makefile.gcc-plugins
@@ -19,6 +19,10 @@
 		+= -fplugin-arg-structleak_plugin-byref
 gcc-plugin-cflags-$(CONFIG_GCC_PLUGIN_STRUCTLEAK_BYREF_ALL)	\
 		+= -fplugin-arg-structleak_plugin-byref-all
+ifdef CONFIG_GCC_PLUGIN_STRUCTLEAK
+    DISABLE_STRUCTLEAK_PLUGIN += -fplugin-arg-structleak_plugin-disable
+endif
+export DISABLE_STRUCTLEAK_PLUGIN
 gcc-plugin-cflags-$(CONFIG_GCC_PLUGIN_STRUCTLEAK)		\
 		+= -DSTRUCTLEAK_PLUGIN
 
@@ -33,6 +37,8 @@
 		+= -DSTACKLEAK_PLUGIN
 gcc-plugin-cflags-$(CONFIG_GCC_PLUGIN_STACKLEAK)		\
 		+= -fplugin-arg-stackleak_plugin-track-min-size=$(CONFIG_STACKLEAK_TRACK_MIN_SIZE)
+gcc-plugin-cflags-$(CONFIG_GCC_PLUGIN_STACKLEAK)		\
+		+= -fplugin-arg-stackleak_plugin-arch=$(SRCARCH)
 ifdef CONFIG_GCC_PLUGIN_STACKLEAK
     DISABLE_STACKLEAK_PLUGIN += -fplugin-arg-stackleak_plugin-disable
 endif
diff --git a/scripts/Makefile.host b/scripts/Makefile.host
index 4c51c95..278b4d6 100644
--- a/scripts/Makefile.host
+++ b/scripts/Makefile.host
@@ -24,57 +24,45 @@
 # Both C and C++ are supported, but preferred language is C for such utilities.
 #
 # Sample syntax (see Documentation/kbuild/makefiles.rst for reference)
-# hostprogs-y := bin2hex
+# hostprogs := bin2hex
 # Will compile bin2hex.c and create an executable named bin2hex
 #
-# hostprogs-y    := lxdialog
+# hostprogs     := lxdialog
 # lxdialog-objs := checklist.o lxdialog.o
 # Will compile lxdialog.c and checklist.c, and then link the executable
 # lxdialog, based on checklist.o and lxdialog.o
 #
-# hostprogs-y      := qconf
+# hostprogs       := qconf
 # qconf-cxxobjs   := qconf.o
 # qconf-objs      := menu.o
 # Will compile qconf as a C++ program, and menu as a C program.
 # They are linked as C++ code to the executable qconf
 
-__hostprogs := $(sort $(hostprogs-y) $(hostprogs-m))
-host-cshlib := $(sort $(hostlibs-y) $(hostlibs-m))
-host-cxxshlib := $(sort $(hostcxxlibs-y) $(hostcxxlibs-m))
-
 # C code
 # Executables compiled from a single .c file
-host-csingle	:= $(foreach m,$(__hostprogs), \
+host-csingle	:= $(foreach m,$(hostprogs), \
 			$(if $($(m)-objs)$($(m)-cxxobjs),,$(m)))
 
 # C executables linked based on several .o files
-host-cmulti	:= $(foreach m,$(__hostprogs),\
+host-cmulti	:= $(foreach m,$(hostprogs),\
 		   $(if $($(m)-cxxobjs),,$(if $($(m)-objs),$(m))))
 
 # Object (.o) files compiled from .c files
-host-cobjs	:= $(sort $(foreach m,$(__hostprogs),$($(m)-objs)))
+host-cobjs	:= $(sort $(foreach m,$(hostprogs),$($(m)-objs)))
 
 # C++ code
 # C++ executables compiled from at least one .cc file
 # and zero or more .c files
-host-cxxmulti	:= $(foreach m,$(__hostprogs),$(if $($(m)-cxxobjs),$(m)))
+host-cxxmulti	:= $(foreach m,$(hostprogs),$(if $($(m)-cxxobjs),$(m)))
 
 # C++ Object (.o) files compiled from .cc files
 host-cxxobjs	:= $(sort $(foreach m,$(host-cxxmulti),$($(m)-cxxobjs)))
 
-# Object (.o) files used by the shared libaries
-host-cshobjs	:= $(sort $(foreach m,$(host-cshlib),$($(m:.so=-objs))))
-host-cxxshobjs	:= $(sort $(foreach m,$(host-cxxshlib),$($(m:.so=-objs))))
-
 host-csingle	:= $(addprefix $(obj)/,$(host-csingle))
 host-cmulti	:= $(addprefix $(obj)/,$(host-cmulti))
 host-cobjs	:= $(addprefix $(obj)/,$(host-cobjs))
 host-cxxmulti	:= $(addprefix $(obj)/,$(host-cxxmulti))
 host-cxxobjs	:= $(addprefix $(obj)/,$(host-cxxobjs))
-host-cshlib	:= $(addprefix $(obj)/,$(host-cshlib))
-host-cxxshlib	:= $(addprefix $(obj)/,$(host-cxxshlib))
-host-cshobjs	:= $(addprefix $(obj)/,$(host-cshobjs))
-host-cxxshobjs	:= $(addprefix $(obj)/,$(host-cxxshobjs))
 
 #####
 # Handle options to gcc. Support building with separate output directory
@@ -92,8 +80,8 @@
 endif
 endif
 
-hostc_flags    = -Wp,-MD,$(depfile) $(_hostc_flags)
-hostcxx_flags  = -Wp,-MD,$(depfile) $(_hostcxx_flags)
+hostc_flags    = -Wp,-MMD,$(depfile) $(_hostc_flags)
+hostcxx_flags  = -Wp,-MMD,$(depfile) $(_hostcxx_flags)
 
 #####
 # Compile programs on the host
@@ -140,42 +128,5 @@
 $(host-cxxobjs): $(obj)/%.o: $(src)/%.cc FORCE
 	$(call if_changed_dep,host-cxxobjs)
 
-# Compile .c file, create position independent .o file
-# host-cshobjs -> .o
-quiet_cmd_host-cshobjs	= HOSTCC  -fPIC $@
-      cmd_host-cshobjs	= $(HOSTCC) $(hostc_flags) -fPIC -c -o $@ $<
-$(host-cshobjs): $(obj)/%.o: $(src)/%.c FORCE
-	$(call if_changed_dep,host-cshobjs)
-
-# Compile .c file, create position independent .o file
-# Note that plugin capable gcc versions can be either C or C++ based
-# therefore plugin source files have to be compilable in both C and C++ mode.
-# This is why a C++ compiler is invoked on a .c file.
-# host-cxxshobjs -> .o
-quiet_cmd_host-cxxshobjs	= HOSTCXX -fPIC $@
-      cmd_host-cxxshobjs	= $(HOSTCXX) $(hostcxx_flags) -fPIC -c -o $@ $<
-$(host-cxxshobjs): $(obj)/%.o: $(src)/%.c FORCE
-	$(call if_changed_dep,host-cxxshobjs)
-
-# Link a shared library, based on position independent .o files
-# *.o -> .so shared library (host-cshlib)
-quiet_cmd_host-cshlib	= HOSTLLD -shared $@
-      cmd_host-cshlib	= $(HOSTCC) $(KBUILD_HOSTLDFLAGS) -shared -o $@ \
-			  $(addprefix $(obj)/, $($(target-stem)-objs)) \
-			  $(KBUILD_HOSTLDLIBS) $(HOSTLDLIBS_$(target-stem).so)
-$(host-cshlib): FORCE
-	$(call if_changed,host-cshlib)
-$(call multi_depend, $(host-cshlib), .so, -objs)
-
-# Link a shared library, based on position independent .o files
-# *.o -> .so shared library (host-cxxshlib)
-quiet_cmd_host-cxxshlib	= HOSTLLD -shared $@
-      cmd_host-cxxshlib	= $(HOSTCXX) $(KBUILD_HOSTLDFLAGS) -shared -o $@ \
-			  $(addprefix $(obj)/, $($(target-stem)-objs)) \
-			  $(KBUILD_HOSTLDLIBS) $(HOSTLDLIBS_$(target-stem).so)
-$(host-cxxshlib): FORCE
-	$(call if_changed,host-cxxshlib)
-$(call multi_depend, $(host-cxxshlib), .so, -objs)
-
-targets += $(host-csingle)  $(host-cmulti) $(host-cobjs)\
-	   $(host-cxxmulti) $(host-cxxobjs) $(host-cshlib) $(host-cshobjs) $(host-cxxshlib) $(host-cxxshobjs)
+targets += $(host-csingle) $(host-cmulti) $(host-cobjs) \
+	   $(host-cxxmulti) $(host-cxxobjs)
diff --git a/scripts/Makefile.kasan b/scripts/Makefile.kasan
index 03757cc..127012f 100644
--- a/scripts/Makefile.kasan
+++ b/scripts/Makefile.kasan
@@ -1,8 +1,8 @@
 # SPDX-License-Identifier: GPL-2.0
-ifdef CONFIG_KASAN
 CFLAGS_KASAN_NOSANITIZE := -fno-builtin
 KASAN_SHADOW_OFFSET ?= $(CONFIG_KASAN_SHADOW_OFFSET)
-endif
+
+cc-param = $(call cc-option, -mllvm -$(1), $(call cc-option, --param $(1)))
 
 ifdef CONFIG_KASAN_GENERIC
 
@@ -14,8 +14,6 @@
 
 CFLAGS_KASAN_MINIMAL := -fsanitize=kernel-address
 
-cc-param = $(call cc-option, -mllvm -$(1), $(call cc-option, --param $(1)))
-
 # -fasan-shadow-offset fails without -fsanitize
 CFLAGS_KASAN_SHADOW := $(call cc-option, -fsanitize=kernel-address \
 			-fasan-shadow-offset=$(KASAN_SHADOW_OFFSET), \
@@ -38,13 +36,16 @@
 ifdef CONFIG_KASAN_SW_TAGS
 
 ifdef CONFIG_KASAN_INLINE
-    instrumentation_flags := -mllvm -hwasan-mapping-offset=$(KASAN_SHADOW_OFFSET)
+    instrumentation_flags := $(call cc-param,hwasan-mapping-offset=$(KASAN_SHADOW_OFFSET))
 else
-    instrumentation_flags := -mllvm -hwasan-instrument-with-calls=1
+    instrumentation_flags := $(call cc-param,hwasan-instrument-with-calls=1)
 endif
 
 CFLAGS_KASAN := -fsanitize=kernel-hwaddress \
-		-mllvm -hwasan-instrument-stack=0 \
+		$(call cc-param,hwasan-instrument-stack=$(CONFIG_KASAN_STACK)) \
+		$(call cc-param,hwasan-use-short-granules=0) \
 		$(instrumentation_flags)
 
 endif # CONFIG_KASAN_SW_TAGS
+
+export CFLAGS_KASAN CFLAGS_KASAN_NOSANITIZE
diff --git a/scripts/Makefile.kcov b/scripts/Makefile.kcov
index 52b1133..67e8cfe 100644
--- a/scripts/Makefile.kcov
+++ b/scripts/Makefile.kcov
@@ -1,10 +1,6 @@
 # SPDX-License-Identifier: GPL-2.0-only
-ifdef CONFIG_KCOV
-
 kcov-flags-$(CONFIG_CC_HAS_SANCOV_TRACE_PC)	+= -fsanitize-coverage=trace-pc
 kcov-flags-$(CONFIG_KCOV_ENABLE_COMPARISONS)	+= -fsanitize-coverage=trace-cmp
 kcov-flags-$(CONFIG_GCC_PLUGIN_SANCOV)		+= -fplugin=$(objtree)/scripts/gcc-plugins/sancov_plugin.so
 
 export CFLAGS_KCOV := $(kcov-flags-y)
-
-endif
diff --git a/scripts/Makefile.kcsan b/scripts/Makefile.kcsan
new file mode 100644
index 0000000..37cb504
--- /dev/null
+++ b/scripts/Makefile.kcsan
@@ -0,0 +1,15 @@
+# SPDX-License-Identifier: GPL-2.0
+# GCC and Clang accept backend options differently. Do not wrap in cc-option,
+# because Clang accepts "--param" even if it is unused.
+ifdef CONFIG_CC_IS_CLANG
+cc-param = -mllvm -$(1)
+else
+cc-param = --param $(1)
+endif
+
+# Keep most options here optional, to allow enabling more compilers if absence
+# of some options does not break KCSAN nor causes false positive reports.
+export CFLAGS_KCSAN := -fsanitize=thread \
+	$(call cc-option,$(call cc-param,tsan-instrument-func-entry-exit=0) -fno-optimize-sibling-calls) \
+	$(call cc-option,$(call cc-param,tsan-compound-read-before-write=1),$(call cc-option,$(call cc-param,tsan-instrument-read-before-write=1))) \
+	$(call cc-param,tsan-distinguish-volatile=1)
diff --git a/scripts/Makefile.lib b/scripts/Makefile.lib
index a6d0044..9413370 100644
--- a/scripts/Makefile.lib
+++ b/scripts/Makefile.lib
@@ -4,6 +4,18 @@
 ccflags-y  += $(EXTRA_CFLAGS)
 cppflags-y += $(EXTRA_CPPFLAGS)
 ldflags-y  += $(EXTRA_LDFLAGS)
+ifneq ($(always),)
+$(warning 'always' is deprecated. Please use 'always-y' instead)
+always-y   += $(always)
+endif
+ifneq ($(hostprogs-y),)
+$(warning 'hostprogs-y' is deprecated. Please use 'hostprogs' instead)
+hostprogs  += $(hostprogs-y)
+endif
+ifneq ($(hostprogs-m),)
+$(warning 'hostprogs-m' is deprecated. Please use 'hostprogs' instead)
+hostprogs  += $(hostprogs-m)
+endif
 
 # flags that take effect in current and sub directories
 KBUILD_AFLAGS += $(subdir-asflags-y)
@@ -20,41 +32,53 @@
 # Filter out objects already built-in
 lib-y := $(filter-out $(obj-y), $(sort $(lib-y) $(lib-m)))
 
-# Determine modorder.
-# Unfortunately, we don't have information about ordering between -y
-# and -m subdirs.  Just put -y's first.
-modorder	:= $(patsubst %/,%/modules.order, $(filter %/, $(obj-y)) $(obj-m:.o=.ko))
-
-# Handle objects in subdirs
-# ---------------------------------------------------------------------------
-# o if we encounter foo/ in $(obj-y), replace it by foo/built-in.a
-#   and add the directory to the list of dirs to descend into: $(subdir-y)
-# o if we encounter foo/ in $(obj-m), remove it from $(obj-m)
-#   and add the directory to the list of dirs to descend into: $(subdir-m)
-__subdir-y	:= $(patsubst %/,%,$(filter %/, $(obj-y)))
-subdir-y	+= $(__subdir-y)
-__subdir-m	:= $(patsubst %/,%,$(filter %/, $(obj-m)))
-subdir-m	+= $(__subdir-m)
-obj-y		:= $(patsubst %/, %/built-in.a, $(obj-y))
-obj-m		:= $(filter-out %/, $(obj-m))
-
 # Subdirectories we need to descend into
-subdir-ym	:= $(sort $(subdir-y) $(subdir-m))
+subdir-ym := $(sort $(subdir-y) $(subdir-m) \
+			$(patsubst %/,%, $(filter %/, $(obj-y) $(obj-m))))
+
+# Handle objects in subdirs:
+# - If we encounter foo/ in $(obj-y), replace it by foo/built-in.a and
+#   foo/modules.order
+# - If we encounter foo/ in $(obj-m), replace it by foo/modules.order
+#
+# Generate modules.order to determine modorder. Unfortunately, we don't have
+# information about ordering between -y and -m subdirs. Just put -y's first.
+
+ifdef need-modorder
+obj-m := $(patsubst %/,%/modules.order, $(filter %/, $(obj-y)) $(obj-m))
+else
+obj-m := $(filter-out %/, $(obj-m))
+endif
+
+ifdef need-builtin
+obj-y		:= $(patsubst %/, %/built-in.a, $(obj-y))
+else
+obj-y		:= $(filter-out %/, $(obj-y))
+endif
 
 # If $(foo-objs), $(foo-y), $(foo-m), or $(foo-) exists, foo.o is a composite object
 multi-used-y := $(sort $(foreach m,$(obj-y), $(if $(strip $($(m:.o=-objs)) $($(m:.o=-y)) $($(m:.o=-))), $(m))))
 multi-used-m := $(sort $(foreach m,$(obj-m), $(if $(strip $($(m:.o=-objs)) $($(m:.o=-y)) $($(m:.o=-m)) $($(m:.o=-))), $(m))))
 multi-used   := $(multi-used-y) $(multi-used-m)
 
-# $(subdir-obj-y) is the list of objects in $(obj-y) which uses dir/ to
-# tell kbuild to descend
-subdir-obj-y := $(filter %/built-in.a, $(obj-y))
-
 # Replace multi-part objects by their individual parts,
 # including built-in.a from subdirectories
 real-obj-y := $(foreach m, $(obj-y), $(if $(strip $($(m:.o=-objs)) $($(m:.o=-y)) $($(m:.o=-))),$($(m:.o=-objs)) $($(m:.o=-y)),$(m)))
 real-obj-m := $(foreach m, $(obj-m), $(if $(strip $($(m:.o=-objs)) $($(m:.o=-y)) $($(m:.o=-m)) $($(m:.o=-))),$($(m:.o=-objs)) $($(m:.o=-y)) $($(m:.o=-m)),$(m)))
 
+always-y += $(always-m)
+
+# hostprogs-always-y += foo
+# ... is a shorthand for
+# hostprogs += foo
+# always-y  += foo
+hostprogs += $(hostprogs-always-y) $(hostprogs-always-m)
+always-y += $(hostprogs-always-y) $(hostprogs-always-m)
+
+# userprogs-always-y is likewise.
+userprogs += $(userprogs-always-y) $(userprogs-always-m)
+always-y += $(userprogs-always-y) $(userprogs-always-m)
+
 # DTB
 # If CONFIG_OF_ALL_DTBS is enabled, all DT blobs are built
 extra-y				+= $(dtb-y)
@@ -68,24 +92,24 @@
 # Add subdir path
 
 extra-y		:= $(addprefix $(obj)/,$(extra-y))
-always		:= $(addprefix $(obj)/,$(always))
+always-y	:= $(addprefix $(obj)/,$(always-y))
 targets		:= $(addprefix $(obj)/,$(targets))
-modorder	:= $(addprefix $(obj)/,$(modorder))
 obj-m		:= $(addprefix $(obj)/,$(obj-m))
 lib-y		:= $(addprefix $(obj)/,$(lib-y))
-subdir-obj-y	:= $(addprefix $(obj)/,$(subdir-obj-y))
 real-obj-y	:= $(addprefix $(obj)/,$(real-obj-y))
 real-obj-m	:= $(addprefix $(obj)/,$(real-obj-m))
 multi-used-m	:= $(addprefix $(obj)/,$(multi-used-m))
 subdir-ym	:= $(addprefix $(obj)/,$(subdir-ym))
 
 # Finds the multi-part object the current object will be linked into.
-# If the object belongs to two or more multi-part objects, all of them are
-# concatenated with a colon separator.
-modname-multi = $(subst $(space),:,$(sort $(foreach m,$(multi-used),\
-		$(if $(filter $*.o, $($(m:.o=-objs)) $($(m:.o=-y)) $($(m:.o=-m))),$(m:.o=)))))
+# If the object belongs to two or more multi-part objects, list them all.
+modname-multi = $(sort $(foreach m,$(multi-used),\
+		$(if $(filter $*.o, $($(m:.o=-objs)) $($(m:.o=-y)) $($(m:.o=-m))),$(m:.o=))))
 
-modname = $(if $(modname-multi),$(modname-multi),$(basetarget))
+__modname = $(if $(modname-multi),$(modname-multi),$(basetarget))
+
+modname = $(subst $(space),:,$(__modname))
+modfile = $(addprefix $(obj)/,$(__modname))
 
 # target with $(obj)/ and its suffix stripped
 target-stem = $(basename $(patsubst $(obj)/%,%,$@))
@@ -93,16 +117,19 @@
 # These flags are needed for modversions and compiling, so we define them here
 # $(modname_flags) defines KBUILD_MODNAME as the name of the module it will
 # end up in (or would, if it gets compiled in)
-name-fix = $(squote)$(quote)$(subst $(comma),_,$(subst -,_,$1))$(quote)$(squote)
+name-fix = $(call stringify,$(subst $(comma),_,$(subst -,_,$1)))
 basename_flags = -DKBUILD_BASENAME=$(call name-fix,$(basetarget))
 modname_flags  = -DKBUILD_MODNAME=$(call name-fix,$(modname))
+modfile_flags  = -DKBUILD_MODFILE=$(call stringify,$(modfile))
 
-orig_c_flags   = $(KBUILD_CPPFLAGS) $(KBUILD_CFLAGS) \
-                 $(ccflags-y) $(CFLAGS_$(target-stem).o)
-_c_flags       = $(filter-out $(CFLAGS_REMOVE_$(target-stem).o), $(orig_c_flags))
-orig_a_flags   = $(KBUILD_CPPFLAGS) $(KBUILD_AFLAGS) \
-                 $(asflags-y) $(AFLAGS_$(target-stem).o)
-_a_flags       = $(filter-out $(AFLAGS_REMOVE_$(target-stem).o), $(orig_a_flags))
+_c_flags       = $(filter-out $(CFLAGS_REMOVE_$(target-stem).o), \
+                     $(filter-out $(ccflags-remove-y), \
+                         $(KBUILD_CPPFLAGS) $(KBUILD_CFLAGS) $(ccflags-y)) \
+                     $(CFLAGS_$(target-stem).o))
+_a_flags       = $(filter-out $(AFLAGS_REMOVE_$(target-stem).o), \
+                     $(filter-out $(asflags-remove-y), \
+                         $(KBUILD_CPPFLAGS) $(KBUILD_AFLAGS) $(asflags-y)) \
+                     $(AFLAGS_$(target-stem).o))
 _cpp_flags     = $(KBUILD_CPPFLAGS) $(cppflags-y) $(CPPFLAGS_$(target-stem).lds)
 
 #
@@ -138,6 +165,16 @@
 	$(CFLAGS_KCOV))
 endif
 
+#
+# Enable KCSAN flags except some files or directories we don't want to check
+# (depends on variables KCSAN_SANITIZE_obj.o, KCSAN_SANITIZE)
+#
+ifeq ($(CONFIG_KCSAN),y)
+_c_flags += $(if $(patsubst n%,, \
+	$(KCSAN_SANITIZE_$(basetarget).o)$(KCSAN_SANITIZE)y), \
+	$(CFLAGS_KCSAN))
+endif
+
 # $(srctree)/$(src) for including checkin headers from generated source files
 # $(objtree)/$(obj) for including generated headers from checkin source files
 ifeq ($(KBUILD_EXTMOD),)
@@ -154,28 +191,28 @@
 modkern_cflags =                                          \
 	$(if $(part-of-module),                           \
 		$(KBUILD_CFLAGS_MODULE) $(CFLAGS_MODULE), \
-		$(KBUILD_CFLAGS_KERNEL) $(CFLAGS_KERNEL))
+		$(KBUILD_CFLAGS_KERNEL) $(CFLAGS_KERNEL) $(modfile_flags))
 
 modkern_aflags = $(if $(part-of-module),				\
 			$(KBUILD_AFLAGS_MODULE) $(AFLAGS_MODULE),	\
 			$(KBUILD_AFLAGS_KERNEL) $(AFLAGS_KERNEL))
 
-c_flags        = -Wp,-MD,$(depfile) $(NOSTDINC_FLAGS) $(LINUXINCLUDE)     \
+c_flags        = -Wp,-MMD,$(depfile) $(NOSTDINC_FLAGS) $(LINUXINCLUDE)     \
 		 -include $(srctree)/include/linux/compiler_types.h       \
 		 $(_c_flags) $(modkern_cflags)                           \
 		 $(basename_flags) $(modname_flags)
 
-a_flags        = -Wp,-MD,$(depfile) $(NOSTDINC_FLAGS) $(LINUXINCLUDE)     \
+a_flags        = -Wp,-MMD,$(depfile) $(NOSTDINC_FLAGS) $(LINUXINCLUDE)     \
 		 $(_a_flags) $(modkern_aflags)
 
-cpp_flags      = -Wp,-MD,$(depfile) $(NOSTDINC_FLAGS) $(LINUXINCLUDE)     \
+cpp_flags      = -Wp,-MMD,$(depfile) $(NOSTDINC_FLAGS) $(LINUXINCLUDE)     \
 		 $(_cpp_flags)
 
 ld_flags       = $(KBUILD_LDFLAGS) $(ldflags-y) $(LDFLAGS_$(@F))
 
 DTC_INCLUDE    := $(srctree)/scripts/dtc/include-prefixes
 
-dtc_cpp_flags  = -Wp,-MD,$(depfile).pre.tmp -nostdinc                    \
+dtc_cpp_flags  = -Wp,-MMD,$(depfile).pre.tmp -nostdinc                    \
 		 $(addprefix -I,$(DTC_INCLUDE))                          \
 		 -undef -D__DTS__
 
@@ -188,6 +225,9 @@
 	$(addprefix $(obj)/, $(foreach s, $3, $($(m:%$(strip $2)=%$(s)))))))
 endef
 
+quiet_cmd_copy = COPY    $@
+      cmd_copy = cp $< $@
+
 # Shipped files
 # ===========================================================================
 
@@ -235,6 +275,7 @@
 # DTC
 # ---------------------------------------------------------------------------
 DTC ?= $(objtree)/scripts/dtc/dtc
+DTC_FLAGS += -Wno-interrupt_provider
 
 # Disable noisy checks by default
 ifeq ($(findstring 1,$(KBUILD_EXTRA_WARN)),)
@@ -250,7 +291,8 @@
 
 ifneq ($(findstring 2,$(KBUILD_EXTRA_WARN)),)
 DTC_FLAGS += -Wnode_name_chars_strict \
-	-Wproperty_name_chars_strict
+	-Wproperty_name_chars_strict \
+	-Winterrupt_provider
 endif
 
 DTC_FLAGS += $(DTC_FLAGS_$(basetarget))
@@ -274,25 +316,25 @@
 	$(call if_changed,dt_S_dtb)
 
 quiet_cmd_dtc = DTC     $@
-cmd_dtc = mkdir -p $(dir ${dtc-tmp}) ; \
-	$(HOSTCC) -E $(dtc_cpp_flags) -x assembler-with-cpp -o $(dtc-tmp) $< ; \
-	$(DTC) -O $(2) -o $@ -b 0 \
+cmd_dtc = $(HOSTCC) -E $(dtc_cpp_flags) -x assembler-with-cpp -o $(dtc-tmp) $< ; \
+	$(DTC) -O $(patsubst .%,%,$(suffix $@)) -o $@ -b 0 \
 		$(addprefix -i,$(dir $<) $(DTC_INCLUDE)) $(DTC_FLAGS) \
 		-d $(depfile).dtc.tmp $(dtc-tmp) ; \
 	cat $(depfile).pre.tmp $(depfile).dtc.tmp > $(depfile)
 
 $(obj)/%.dtb: $(src)/%.dts $(DTC) FORCE
-	$(call if_changed_dep,dtc,dtb)
+	$(call if_changed_dep,dtc)
 
 DT_CHECKER ?= dt-validate
 DT_BINDING_DIR := Documentation/devicetree/bindings
-DT_TMP_SCHEMA := $(objtree)/$(DT_BINDING_DIR)/processed-schema.yaml
+# DT_TMP_SCHEMA may be overridden from Documentation/devicetree/bindings/Makefile
+DT_TMP_SCHEMA ?= $(objtree)/$(DT_BINDING_DIR)/processed-schema.json
 
 quiet_cmd_dtb_check =	CHECK   $@
-      cmd_dtb_check =	$(DT_CHECKER) -u $(srctree)/$(DT_BINDING_DIR) -p $(DT_TMP_SCHEMA) $@ ;
+      cmd_dtb_check =	$(DT_CHECKER) -u $(srctree)/$(DT_BINDING_DIR) -p $(DT_TMP_SCHEMA) $@
 
 define rule_dtc
-	$(call cmd_and_fixdep,dtc,yaml)
+	$(call cmd_and_fixdep,dtc)
 	$(call cmd,dtb_check)
 endef
 
@@ -383,6 +425,28 @@
 quiet_cmd_xzmisc = XZMISC  $@
       cmd_xzmisc = cat $(real-prereqs) | $(XZ) --check=crc32 --lzma2=dict=1MiB > $@
 
+# ZSTD
+# ---------------------------------------------------------------------------
+# Appends the uncompressed size of the data using size_append. The .zst
+# format has the size information available at the beginning of the file too,
+# but it's in a more complex format and it's good to avoid changing the part
+# of the boot code that reads the uncompressed size.
+#
+# Note that the bytes added by size_append will make the zstd tool think that
+# the file is corrupt. This is expected.
+#
+# zstd uses a maximum window size of 8 MB. zstd22 uses a maximum window size of
+# 128 MB. zstd22 is used for kernel compression because it is decompressed in a
+# single pass, so zstd doesn't need to allocate a window buffer. When streaming
+# decompression is used, like initramfs decompression, zstd22 should likely not
+# be used because it would require zstd to allocate a 128 MB buffer.
+
+quiet_cmd_zstd = ZSTD    $@
+      cmd_zstd = { cat $(real-prereqs) | $(ZSTD) -19; $(size_append); } > $@
+
+quiet_cmd_zstd22 = ZSTD22  $@
+      cmd_zstd22 = { cat $(real-prereqs) | $(ZSTD) -22 --ultra; $(size_append); } > $@
+
 # ASM offsets
 # ---------------------------------------------------------------------------
 
diff --git a/scripts/Makefile.modbuiltin b/scripts/Makefile.modbuiltin
deleted file mode 100644
index 7d4711b..0000000
--- a/scripts/Makefile.modbuiltin
+++ /dev/null
@@ -1,57 +0,0 @@
-# SPDX-License-Identifier: GPL-2.0
-# ==========================================================================
-# Generating modules.builtin
-# ==========================================================================
-
-src := $(obj)
-
-PHONY := __modbuiltin
-__modbuiltin:
-
-include include/config/auto.conf
-# tristate.conf sets tristate variables to uppercase 'Y' or 'M'
-# That way, we get the list of built-in modules in obj-Y
-include include/config/tristate.conf
-
-include scripts/Kbuild.include
-
-ifdef building_out_of_srctree
-# Create output directory if not already present
-_dummy := $(shell [ -d $(obj) ] || mkdir -p $(obj))
-endif
-
-# The filename Kbuild has precedence over Makefile
-kbuild-dir := $(if $(filter /%,$(src)),$(src),$(srctree)/$(src))
-kbuild-file := $(if $(wildcard $(kbuild-dir)/Kbuild),$(kbuild-dir)/Kbuild,$(kbuild-dir)/Makefile)
-include $(kbuild-file)
-
-include scripts/Makefile.lib
-__subdir-Y     := $(patsubst %/,%,$(filter %/, $(obj-Y)))
-subdir-Y       += $(__subdir-Y)
-subdir-ym      := $(sort $(subdir-y) $(subdir-Y) $(subdir-m))
-subdir-ym      := $(addprefix $(obj)/,$(subdir-ym))
-obj-Y          := $(addprefix $(obj)/,$(obj-Y))
-
-modbuiltin-subdirs := $(patsubst %,%/modules.builtin, $(subdir-ym))
-modbuiltin-mods    := $(filter %.ko, $(obj-Y:.o=.ko))
-modbuiltin-target  := $(obj)/modules.builtin
-
-__modbuiltin: $(modbuiltin-target) $(subdir-ym)
-	@:
-
-$(modbuiltin-target): $(subdir-ym) FORCE
-	$(Q)(for m in $(modbuiltin-mods); do echo $$m; done;	\
-	cat /dev/null $(modbuiltin-subdirs)) > $@
-
-PHONY += FORCE
-
-FORCE:
-
-# Descending
-# ---------------------------------------------------------------------------
-
-PHONY += $(subdir-ym)
-$(subdir-ym):
-	$(Q)$(MAKE) $(modbuiltin)=$@
-
-.PHONY: $(PHONY)
diff --git a/scripts/Makefile.modfinal b/scripts/Makefile.modfinal
index 411c1e6..ae01baf 100644
--- a/scripts/Makefile.modfinal
+++ b/scripts/Makefile.modfinal
@@ -33,11 +33,10 @@
       cmd_ld_ko_o =                                                     \
 	$(LD) -r $(KBUILD_LDFLAGS)					\
 		$(KBUILD_LDFLAGS_MODULE) $(LDFLAGS_MODULE)		\
-		$(addprefix -T , $(KBUILD_LDS_MODULE))			\
-		-o $@ $(filter %.o, $^);				\
+		-T scripts/module.lds -o $@ $(filter %.o, $^);		\
 	$(if $(ARCH_POSTLINK), $(MAKE) -f $(ARCH_POSTLINK) $@, true)
 
-$(modules): %.ko: %.o %.mod.o $(KBUILD_LDS_MODULE) FORCE
+$(modules): %.ko: %.o %.mod.o scripts/module.lds FORCE
 	+$(call if_changed,ld_ko_o)
 
 targets += $(modules) $(modules:.ko=.mod.o)
diff --git a/scripts/Makefile.modpost b/scripts/Makefile.modpost
index 952fff4..12a87be 100644
--- a/scripts/Makefile.modpost
+++ b/scripts/Makefile.modpost
@@ -43,60 +43,99 @@
 include include/config/auto.conf
 include scripts/Kbuild.include
 
-kernelsymfile := $(objtree)/Module.symvers
-modulesymfile := $(firstword $(KBUILD_EXTMOD))/Module.symvers
-
-MODPOST = scripts/mod/modpost						\
-	$(if $(CONFIG_MODVERSIONS),-m)					\
-	$(if $(CONFIG_MODULE_SRCVERSION_ALL),-a)			\
-	$(if $(KBUILD_EXTMOD),-i,-o) $(kernelsymfile)			\
-	$(if $(KBUILD_EXTMOD),-I $(modulesymfile))			\
-	$(if $(KBUILD_EXTMOD),$(addprefix -e ,$(KBUILD_EXTRA_SYMBOLS)))	\
-	$(if $(KBUILD_EXTMOD),-o $(modulesymfile))			\
-	$(if $(CONFIG_SECTION_MISMATCH_WARN_ONLY),,-E)			\
-	$(if $(KBUILD_MODPOST_WARN),-w)					\
-	$(if $(filter nsdeps,$(MAKECMDGOALS)),-d)
+MODPOST = scripts/mod/modpost								\
+	$(if $(CONFIG_MODVERSIONS),-m)							\
+	$(if $(CONFIG_MODULE_SRCVERSION_ALL),-a)					\
+	$(if $(CONFIG_SECTION_MISMATCH_WARN_ONLY),,-E)					\
+	$(if $(KBUILD_MODPOST_WARN),-w) \
+	-o $@
 
 ifdef MODPOST_VMLINUX
 
-quiet_cmd_modpost = MODPOST vmlinux.o
-      cmd_modpost = $(MODPOST) vmlinux.o
+quiet_cmd_modpost = MODPOST $@
+      cmd_modpost = $(MODPOST) $<
 
-__modpost:
+vmlinux.symvers: vmlinux.o
 	$(call cmd,modpost)
 
+__modpost: vmlinux.symvers
+
 else
 
-# When building external modules load the Kbuild file to retrieve EXTRA_SYMBOLS info
-ifneq ($(KBUILD_EXTMOD),)
+ifeq ($(KBUILD_EXTMOD),)
 
-# set src + obj - they may be used when building the .mod.c file
+input-symdump := vmlinux.symvers
+output-symdump := modules-only.symvers
+
+quiet_cmd_cat = GEN     $@
+      cmd_cat = cat $(real-prereqs) > $@
+
+ifneq ($(wildcard vmlinux.symvers),)
+
+__modpost: Module.symvers
+Module.symvers: vmlinux.symvers modules-only.symvers FORCE
+	$(call if_changed,cat)
+
+targets += Module.symvers
+
+endif
+
+else
+
+# set src + obj - they may be used in the modules's Makefile
 obj := $(KBUILD_EXTMOD)
 src := $(obj)
 
 # Include the module's Makefile to find KBUILD_EXTRA_SYMBOLS
 include $(if $(wildcard $(KBUILD_EXTMOD)/Kbuild), \
              $(KBUILD_EXTMOD)/Kbuild, $(KBUILD_EXTMOD)/Makefile)
+
+# modpost option for external modules
+MODPOST += -e
+
+input-symdump := Module.symvers $(KBUILD_EXTRA_SYMBOLS)
+output-symdump := $(KBUILD_EXTMOD)/Module.symvers
+
 endif
 
-MODPOST += $(subst -i,-n,$(filter -i,$(MAKEFLAGS))) -s -T - $(wildcard vmlinux)
+# modpost options for modules (both in-kernel and external)
+MODPOST += \
+	$(addprefix -i ,$(wildcard $(input-symdump))) \
+	$(if $(KBUILD_NSDEPS),-d $(MODULES_NSDEPS)) \
+	$(if $(CONFIG_MODULE_ALLOW_MISSING_NAMESPACE_IMPORTS)$(KBUILD_NSDEPS),-N)
 
-# find all modules listed in modules.order
-modules := $(sort $(shell cat $(MODORDER)))
+# 'make -i -k' ignores compile errors, and builds as many modules as possible.
+ifneq ($(findstring i,$(filter-out --%,$(MAKEFLAGS))),)
+MODPOST += -n
+endif
 
-# Read out modules.order instead of expanding $(modules) to pass in modpost.
+# Clear VPATH to not search for *.symvers in $(srctree). Check only $(objtree).
+VPATH :=
+$(input-symdump):
+	@echo >&2 'WARNING: Symbol version dump "$@" is missing.'
+	@echo >&2 '         Modules may not have dependencies or modversions.'
+
+# Read out modules.order to pass in modpost.
 # Otherwise, allmodconfig would fail with "Argument list too long".
-quiet_cmd_modpost = MODPOST $(words $(modules)) modules
-      cmd_modpost = sed 's/ko$$/o/' $(MODORDER) | $(MODPOST)
+quiet_cmd_modpost = MODPOST $@
+      cmd_modpost = sed 's/ko$$/o/' $< | $(MODPOST) -T -
 
-__modpost:
-	@$(kecho) '  Building modules, stage 2.'
-	$(call cmd,modpost)
+$(output-symdump): $(MODORDER) $(input-symdump) FORCE
+	$(call if_changed,modpost)
+
+targets += $(output-symdump)
+
+__modpost: $(output-symdump)
 ifneq ($(KBUILD_MODPOST_NOFINAL),1)
 	$(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modfinal
 endif
 
-nsdeps: __modpost
+PHONY += FORCE
+FORCE:
+
+existing-targets := $(wildcard $(sort $(targets)))
+
+-include $(foreach f,$(existing-targets),$(dir $(f)).$(notdir $(f)).cmd)
 
 endif
 
diff --git a/scripts/Makefile.package b/scripts/Makefile.package
index 35a617c..f952fb6 100644
--- a/scripts/Makefile.package
+++ b/scripts/Makefile.package
@@ -103,7 +103,7 @@
 
 # tarball targets
 # ---------------------------------------------------------------------------
-tar-pkgs := tar-pkg targz-pkg tarbz2-pkg tarxz-pkg
+tar-pkgs := dir-pkg tar-pkg targz-pkg tarbz2-pkg tarxz-pkg
 PHONY += $(tar-pkgs)
 $(tar-pkgs):
 	$(MAKE) -f $(srctree)/Makefile
@@ -146,7 +146,9 @@
 	@echo '  binrpm-pkg          - Build only the binary kernel RPM package'
 	@echo '  deb-pkg             - Build both source and binary deb kernel packages'
 	@echo '  bindeb-pkg          - Build only the binary kernel deb package'
-	@echo '  snap-pkg            - Build only the binary kernel snap package (will connect to external hosts)'
+	@echo '  snap-pkg            - Build only the binary kernel snap package'
+	@echo '                        (will connect to external hosts)'
+	@echo '  dir-pkg             - Build the kernel as a plain directory structure'
 	@echo '  tar-pkg             - Build the kernel as an uncompressed tarball'
 	@echo '  targz-pkg           - Build the kernel as a gzip compressed tarball'
 	@echo '  tarbz2-pkg          - Build the kernel as a bzip2 compressed tarball'
diff --git a/scripts/Makefile.ubsan b/scripts/Makefile.ubsan
index 019771b..9716dab 100644
--- a/scripts/Makefile.ubsan
+++ b/scripts/Makefile.ubsan
@@ -1,19 +1,37 @@
 # SPDX-License-Identifier: GPL-2.0
-ifdef CONFIG_UBSAN
-      CFLAGS_UBSAN += $(call cc-option, -fsanitize=shift)
-      CFLAGS_UBSAN += $(call cc-option, -fsanitize=integer-divide-by-zero)
-      CFLAGS_UBSAN += $(call cc-option, -fsanitize=unreachable)
-      CFLAGS_UBSAN += $(call cc-option, -fsanitize=signed-integer-overflow)
-      CFLAGS_UBSAN += $(call cc-option, -fsanitize=bounds)
-      CFLAGS_UBSAN += $(call cc-option, -fsanitize=object-size)
-      CFLAGS_UBSAN += $(call cc-option, -fsanitize=bool)
-      CFLAGS_UBSAN += $(call cc-option, -fsanitize=enum)
+
+export CFLAGS_UBSAN :=
 
 ifdef CONFIG_UBSAN_ALIGNMENT
       CFLAGS_UBSAN += $(call cc-option, -fsanitize=alignment)
 endif
 
+ifdef CONFIG_UBSAN_BOUNDS
+      ifdef CONFIG_CC_IS_CLANG
+            CFLAGS_UBSAN += -fsanitize=array-bounds
+      else
+            CFLAGS_UBSAN += $(call cc-option, -fsanitize=bounds)
+      endif
+endif
+
+ifdef CONFIG_UBSAN_LOCAL_BOUNDS
+      CFLAGS_UBSAN += -fsanitize=local-bounds
+endif
+
+ifdef CONFIG_UBSAN_MISC
+      CFLAGS_UBSAN += $(call cc-option, -fsanitize=shift)
+      CFLAGS_UBSAN += $(call cc-option, -fsanitize=integer-divide-by-zero)
+      CFLAGS_UBSAN += $(call cc-option, -fsanitize=unreachable)
+      CFLAGS_UBSAN += $(call cc-option, -fsanitize=signed-integer-overflow)
+      CFLAGS_UBSAN += $(call cc-option, -fsanitize=object-size)
+      CFLAGS_UBSAN += $(call cc-option, -fsanitize=bool)
+      CFLAGS_UBSAN += $(call cc-option, -fsanitize=enum)
+endif
+
+ifdef CONFIG_UBSAN_TRAP
+      CFLAGS_UBSAN += $(call cc-option, -fsanitize-undefined-trap-on-error)
+endif
+
       # -fsanitize=* options makes GCC less smart than usual and
       # increase number of 'maybe-uninitialized false-positives
       CFLAGS_UBSAN += $(call cc-option, -Wno-maybe-uninitialized)
-endif
diff --git a/scripts/Makefile.userprogs b/scripts/Makefile.userprogs
new file mode 100644
index 0000000..fb41529
--- /dev/null
+++ b/scripts/Makefile.userprogs
@@ -0,0 +1,45 @@
+# SPDX-License-Identifier: GPL-2.0-only
+#
+# Build userspace programs for the target system
+#
+
+# Executables compiled from a single .c file
+user-csingle	:= $(foreach m, $(userprogs), $(if $($(m)-objs),,$(m)))
+
+# Executables linked based on several .o files
+user-cmulti	:= $(foreach m, $(userprogs), $(if $($(m)-objs),$(m)))
+
+# Objects compiled from .c files
+user-cobjs	:= $(sort $(foreach m, $(userprogs), $($(m)-objs)))
+
+user-csingle	:= $(addprefix $(obj)/, $(user-csingle))
+user-cmulti	:= $(addprefix $(obj)/, $(user-cmulti))
+user-cobjs	:= $(addprefix $(obj)/, $(user-cobjs))
+
+user_ccflags	= -Wp,-MMD,$(depfile) $(KBUILD_USERCFLAGS) $(userccflags) \
+			$($(target-stem)-userccflags)
+user_ldflags	= $(KBUILD_USERLDFLAGS) $(userldflags) $($(target-stem)-userldflags)
+
+# Create an executable from a single .c file
+quiet_cmd_user_cc_c = CC [U]  $@
+      cmd_user_cc_c = $(CC) $(user_ccflags) $(user_ldflags) -o $@ $< \
+		      $($(target-stem)-userldlibs)
+$(user-csingle): $(obj)/%: $(src)/%.c FORCE
+	$(call if_changed_dep,user_cc_c)
+
+# Link an executable based on list of .o files
+quiet_cmd_user_ld = LD [U]  $@
+      cmd_user_ld = $(CC) $(user_ldflags) -o $@ \
+		    $(addprefix $(obj)/, $($(target-stem)-objs)) \
+		    $($(target-stem)-userldlibs)
+$(user-cmulti): FORCE
+	$(call if_changed,user_ld)
+$(call multi_depend, $(user-cmulti), , -objs)
+
+# Create .o file from a .c file
+quiet_cmd_user_cc_o_c = CC [U]  $@
+      cmd_user_cc_o_c = $(CC) $(user_ccflags) -c -o $@ $<
+$(user-cobjs): $(obj)/%.o: $(src)/%.c FORCE
+	$(call if_changed_dep,user_cc_o_c)
+
+targets += $(user-csingle) $(user-cmulti) $(user-cobjs)
diff --git a/scripts/adjust_autoksyms.sh b/scripts/adjust_autoksyms.sh
index a904bf1..2b366d9 100755
--- a/scripts/adjust_autoksyms.sh
+++ b/scripts/adjust_autoksyms.sh
@@ -1,14 +1,13 @@
 #!/bin/sh
 # SPDX-License-Identifier: GPL-2.0-only
 
-# Script to create/update include/generated/autoksyms.h and dependency files
+# Script to update include/generated/autoksyms.h and dependency files
 #
 # Copyright:	(C) 2016  Linaro Limited
 # Created by:	Nicolas Pitre, January 2016
 #
 
-# Create/update the include/generated/autoksyms.h file from the list
-# of all module's needed symbols as recorded on the second line of *.mod files.
+# Update the include/generated/autoksyms.h file.
 #
 # For each symbol being added or removed, the corresponding dependency
 # file's timestamp is updated to force a rebuild of the affected source
@@ -38,23 +37,8 @@
 # We need access to CONFIG_ symbols
 . include/config/auto.conf
 
-# Generate a new ksym list file with symbols needed by the current
-# set of modules.
-cat > "$new_ksyms_file" << EOT
-/*
- * Automatically generated file; DO NOT EDIT.
- */
-
-EOT
-sed 's/ko$/mod/' modules.order |
-xargs -n1 sed -n -e '2{s/ /\n/g;/^$/!p;}' -- |
-sort -u |
-sed -e 's/\(.*\)/#define __KSYM_\1 1/' >> "$new_ksyms_file"
-
-# Special case for modversions (see modpost.c)
-if [ -n "$CONFIG_MODVERSIONS" ]; then
-	echo "#define __KSYM_module_layout 1" >> "$new_ksyms_file"
-fi
+# Generate a new symbol list file
+$CONFIG_SHELL $srctree/scripts/gen_autoksyms.sh "$new_ksyms_file"
 
 # Extract changes between old and new list and touch corresponding
 # dependency files.
diff --git a/scripts/atomic/check-atomics.sh b/scripts/atomic/check-atomics.sh
index 8378c63..82748d4 100755
--- a/scripts/atomic/check-atomics.sh
+++ b/scripts/atomic/check-atomics.sh
@@ -16,6 +16,7 @@
 cat <<EOF |
 asm-generic/atomic-instrumented.h
 asm-generic/atomic-long.h
+linux/atomic-arch-fallback.h
 linux/atomic-fallback.h
 EOF
 while read header; do
diff --git a/scripts/atomic/fallbacks/acquire b/scripts/atomic/fallbacks/acquire
index e38871e..59c0052 100755
--- a/scripts/atomic/fallbacks/acquire
+++ b/scripts/atomic/fallbacks/acquire
@@ -1,8 +1,8 @@
 cat <<EOF
-static inline ${ret}
-${atomic}_${pfx}${name}${sfx}_acquire(${params})
+static __always_inline ${ret}
+${arch}${atomic}_${pfx}${name}${sfx}_acquire(${params})
 {
-	${ret} ret = ${atomic}_${pfx}${name}${sfx}_relaxed(${args});
+	${ret} ret = ${arch}${atomic}_${pfx}${name}${sfx}_relaxed(${args});
 	__atomic_acquire_fence();
 	return ret;
 }
diff --git a/scripts/atomic/fallbacks/add_negative b/scripts/atomic/fallbacks/add_negative
index e6f4815..a66635b 100755
--- a/scripts/atomic/fallbacks/add_negative
+++ b/scripts/atomic/fallbacks/add_negative
@@ -1,6 +1,6 @@
 cat <<EOF
 /**
- * ${atomic}_add_negative - add and test if negative
+ * ${arch}${atomic}_add_negative - add and test if negative
  * @i: integer value to add
  * @v: pointer of type ${atomic}_t
  *
@@ -8,9 +8,9 @@
  * if the result is negative, or false when
  * result is greater than or equal to zero.
  */
-static inline bool
-${atomic}_add_negative(${int} i, ${atomic}_t *v)
+static __always_inline bool
+${arch}${atomic}_add_negative(${int} i, ${atomic}_t *v)
 {
-	return ${atomic}_add_return(i, v) < 0;
+	return ${arch}${atomic}_add_return(i, v) < 0;
 }
 EOF
diff --git a/scripts/atomic/fallbacks/add_unless b/scripts/atomic/fallbacks/add_unless
index 7925338..2ff598a 100755
--- a/scripts/atomic/fallbacks/add_unless
+++ b/scripts/atomic/fallbacks/add_unless
@@ -1,6 +1,6 @@
 cat << EOF
 /**
- * ${atomic}_add_unless - add unless the number is already a given value
+ * ${arch}${atomic}_add_unless - add unless the number is already a given value
  * @v: pointer of type ${atomic}_t
  * @a: the amount to add to v...
  * @u: ...unless v is equal to u.
@@ -8,9 +8,9 @@
  * Atomically adds @a to @v, if @v was not already @u.
  * Returns true if the addition was done.
  */
-static inline bool
-${atomic}_add_unless(${atomic}_t *v, ${int} a, ${int} u)
+static __always_inline bool
+${arch}${atomic}_add_unless(${atomic}_t *v, ${int} a, ${int} u)
 {
-	return ${atomic}_fetch_add_unless(v, a, u) != u;
+	return ${arch}${atomic}_fetch_add_unless(v, a, u) != u;
 }
 EOF
diff --git a/scripts/atomic/fallbacks/andnot b/scripts/atomic/fallbacks/andnot
index 9f3a321..3f18663 100755
--- a/scripts/atomic/fallbacks/andnot
+++ b/scripts/atomic/fallbacks/andnot
@@ -1,7 +1,7 @@
 cat <<EOF
-static inline ${ret}
-${atomic}_${pfx}andnot${sfx}${order}(${int} i, ${atomic}_t *v)
+static __always_inline ${ret}
+${arch}${atomic}_${pfx}andnot${sfx}${order}(${int} i, ${atomic}_t *v)
 {
-	${retstmt}${atomic}_${pfx}and${sfx}${order}(~i, v);
+	${retstmt}${arch}${atomic}_${pfx}and${sfx}${order}(~i, v);
 }
 EOF
diff --git a/scripts/atomic/fallbacks/dec b/scripts/atomic/fallbacks/dec
index 10bbc82..e2e01f0 100755
--- a/scripts/atomic/fallbacks/dec
+++ b/scripts/atomic/fallbacks/dec
@@ -1,7 +1,7 @@
 cat <<EOF
-static inline ${ret}
-${atomic}_${pfx}dec${sfx}${order}(${atomic}_t *v)
+static __always_inline ${ret}
+${arch}${atomic}_${pfx}dec${sfx}${order}(${atomic}_t *v)
 {
-	${retstmt}${atomic}_${pfx}sub${sfx}${order}(1, v);
+	${retstmt}${arch}${atomic}_${pfx}sub${sfx}${order}(1, v);
 }
 EOF
diff --git a/scripts/atomic/fallbacks/dec_and_test b/scripts/atomic/fallbacks/dec_and_test
index 0ce7103..e8a5e49 100755
--- a/scripts/atomic/fallbacks/dec_and_test
+++ b/scripts/atomic/fallbacks/dec_and_test
@@ -1,15 +1,15 @@
 cat <<EOF
 /**
- * ${atomic}_dec_and_test - decrement and test
+ * ${arch}${atomic}_dec_and_test - decrement and test
  * @v: pointer of type ${atomic}_t
  *
  * Atomically decrements @v by 1 and
  * returns true if the result is 0, or false for all other
  * cases.
  */
-static inline bool
-${atomic}_dec_and_test(${atomic}_t *v)
+static __always_inline bool
+${arch}${atomic}_dec_and_test(${atomic}_t *v)
 {
-	return ${atomic}_dec_return(v) == 0;
+	return ${arch}${atomic}_dec_return(v) == 0;
 }
 EOF
diff --git a/scripts/atomic/fallbacks/dec_if_positive b/scripts/atomic/fallbacks/dec_if_positive
index c52eace..527adec 100755
--- a/scripts/atomic/fallbacks/dec_if_positive
+++ b/scripts/atomic/fallbacks/dec_if_positive
@@ -1,14 +1,14 @@
 cat <<EOF
-static inline ${ret}
-${atomic}_dec_if_positive(${atomic}_t *v)
+static __always_inline ${ret}
+${arch}${atomic}_dec_if_positive(${atomic}_t *v)
 {
-	${int} dec, c = ${atomic}_read(v);
+	${int} dec, c = ${arch}${atomic}_read(v);
 
 	do {
 		dec = c - 1;
 		if (unlikely(dec < 0))
 			break;
-	} while (!${atomic}_try_cmpxchg(v, &c, dec));
+	} while (!${arch}${atomic}_try_cmpxchg(v, &c, dec));
 
 	return dec;
 }
diff --git a/scripts/atomic/fallbacks/dec_unless_positive b/scripts/atomic/fallbacks/dec_unless_positive
index 8a2578f..dcab684 100755
--- a/scripts/atomic/fallbacks/dec_unless_positive
+++ b/scripts/atomic/fallbacks/dec_unless_positive
@@ -1,13 +1,13 @@
 cat <<EOF
-static inline bool
-${atomic}_dec_unless_positive(${atomic}_t *v)
+static __always_inline bool
+${arch}${atomic}_dec_unless_positive(${atomic}_t *v)
 {
-	${int} c = ${atomic}_read(v);
+	${int} c = ${arch}${atomic}_read(v);
 
 	do {
 		if (unlikely(c > 0))
 			return false;
-	} while (!${atomic}_try_cmpxchg(v, &c, c - 1));
+	} while (!${arch}${atomic}_try_cmpxchg(v, &c, c - 1));
 
 	return true;
 }
diff --git a/scripts/atomic/fallbacks/fence b/scripts/atomic/fallbacks/fence
index 82f68fa..3764fc8 100755
--- a/scripts/atomic/fallbacks/fence
+++ b/scripts/atomic/fallbacks/fence
@@ -1,10 +1,10 @@
 cat <<EOF
-static inline ${ret}
-${atomic}_${pfx}${name}${sfx}(${params})
+static __always_inline ${ret}
+${arch}${atomic}_${pfx}${name}${sfx}(${params})
 {
 	${ret} ret;
 	__atomic_pre_full_fence();
-	ret = ${atomic}_${pfx}${name}${sfx}_relaxed(${args});
+	ret = ${arch}${atomic}_${pfx}${name}${sfx}_relaxed(${args});
 	__atomic_post_full_fence();
 	return ret;
 }
diff --git a/scripts/atomic/fallbacks/fetch_add_unless b/scripts/atomic/fallbacks/fetch_add_unless
index d2c091d..0e0b9ae 100755
--- a/scripts/atomic/fallbacks/fetch_add_unless
+++ b/scripts/atomic/fallbacks/fetch_add_unless
@@ -1,6 +1,6 @@
 cat << EOF
 /**
- * ${atomic}_fetch_add_unless - add unless the number is already a given value
+ * ${arch}${atomic}_fetch_add_unless - add unless the number is already a given value
  * @v: pointer of type ${atomic}_t
  * @a: the amount to add to v...
  * @u: ...unless v is equal to u.
@@ -8,15 +8,15 @@
  * Atomically adds @a to @v, so long as @v was not already @u.
  * Returns original value of @v
  */
-static inline ${int}
-${atomic}_fetch_add_unless(${atomic}_t *v, ${int} a, ${int} u)
+static __always_inline ${int}
+${arch}${atomic}_fetch_add_unless(${atomic}_t *v, ${int} a, ${int} u)
 {
-	${int} c = ${atomic}_read(v);
+	${int} c = ${arch}${atomic}_read(v);
 
 	do {
 		if (unlikely(c == u))
 			break;
-	} while (!${atomic}_try_cmpxchg(v, &c, c + a));
+	} while (!${arch}${atomic}_try_cmpxchg(v, &c, c + a));
 
 	return c;
 }
diff --git a/scripts/atomic/fallbacks/inc b/scripts/atomic/fallbacks/inc
index f866b3a..15ec629 100755
--- a/scripts/atomic/fallbacks/inc
+++ b/scripts/atomic/fallbacks/inc
@@ -1,7 +1,7 @@
 cat <<EOF
-static inline ${ret}
-${atomic}_${pfx}inc${sfx}${order}(${atomic}_t *v)
+static __always_inline ${ret}
+${arch}${atomic}_${pfx}inc${sfx}${order}(${atomic}_t *v)
 {
-	${retstmt}${atomic}_${pfx}add${sfx}${order}(1, v);
+	${retstmt}${arch}${atomic}_${pfx}add${sfx}${order}(1, v);
 }
 EOF
diff --git a/scripts/atomic/fallbacks/inc_and_test b/scripts/atomic/fallbacks/inc_and_test
index 4e20688..cecc832 100755
--- a/scripts/atomic/fallbacks/inc_and_test
+++ b/scripts/atomic/fallbacks/inc_and_test
@@ -1,15 +1,15 @@
 cat <<EOF
 /**
- * ${atomic}_inc_and_test - increment and test
+ * ${arch}${atomic}_inc_and_test - increment and test
  * @v: pointer of type ${atomic}_t
  *
  * Atomically increments @v by 1
  * and returns true if the result is zero, or false for all
  * other cases.
  */
-static inline bool
-${atomic}_inc_and_test(${atomic}_t *v)
+static __always_inline bool
+${arch}${atomic}_inc_and_test(${atomic}_t *v)
 {
-	return ${atomic}_inc_return(v) == 0;
+	return ${arch}${atomic}_inc_return(v) == 0;
 }
 EOF
diff --git a/scripts/atomic/fallbacks/inc_not_zero b/scripts/atomic/fallbacks/inc_not_zero
index a7c45c8..50f2d4d 100755
--- a/scripts/atomic/fallbacks/inc_not_zero
+++ b/scripts/atomic/fallbacks/inc_not_zero
@@ -1,14 +1,14 @@
 cat <<EOF
 /**
- * ${atomic}_inc_not_zero - increment unless the number is zero
+ * ${arch}${atomic}_inc_not_zero - increment unless the number is zero
  * @v: pointer of type ${atomic}_t
  *
  * Atomically increments @v by 1, if @v is non-zero.
  * Returns true if the increment was done.
  */
-static inline bool
-${atomic}_inc_not_zero(${atomic}_t *v)
+static __always_inline bool
+${arch}${atomic}_inc_not_zero(${atomic}_t *v)
 {
-	return ${atomic}_add_unless(v, 1, 0);
+	return ${arch}${atomic}_add_unless(v, 1, 0);
 }
 EOF
diff --git a/scripts/atomic/fallbacks/inc_unless_negative b/scripts/atomic/fallbacks/inc_unless_negative
index 0c266e7..87629e0 100755
--- a/scripts/atomic/fallbacks/inc_unless_negative
+++ b/scripts/atomic/fallbacks/inc_unless_negative
@@ -1,13 +1,13 @@
 cat <<EOF
-static inline bool
-${atomic}_inc_unless_negative(${atomic}_t *v)
+static __always_inline bool
+${arch}${atomic}_inc_unless_negative(${atomic}_t *v)
 {
-	${int} c = ${atomic}_read(v);
+	${int} c = ${arch}${atomic}_read(v);
 
 	do {
 		if (unlikely(c < 0))
 			return false;
-	} while (!${atomic}_try_cmpxchg(v, &c, c + 1));
+	} while (!${arch}${atomic}_try_cmpxchg(v, &c, c + 1));
 
 	return true;
 }
diff --git a/scripts/atomic/fallbacks/read_acquire b/scripts/atomic/fallbacks/read_acquire
index 75863b5..341a88d 100755
--- a/scripts/atomic/fallbacks/read_acquire
+++ b/scripts/atomic/fallbacks/read_acquire
@@ -1,6 +1,6 @@
 cat <<EOF
-static inline ${ret}
-${atomic}_read_acquire(const ${atomic}_t *v)
+static __always_inline ${ret}
+${arch}${atomic}_read_acquire(const ${atomic}_t *v)
 {
 	return smp_load_acquire(&(v)->counter);
 }
diff --git a/scripts/atomic/fallbacks/release b/scripts/atomic/fallbacks/release
index 3f628a3..f8906d5 100755
--- a/scripts/atomic/fallbacks/release
+++ b/scripts/atomic/fallbacks/release
@@ -1,8 +1,8 @@
 cat <<EOF
-static inline ${ret}
-${atomic}_${pfx}${name}${sfx}_release(${params})
+static __always_inline ${ret}
+${arch}${atomic}_${pfx}${name}${sfx}_release(${params})
 {
 	__atomic_release_fence();
-	${retstmt}${atomic}_${pfx}${name}${sfx}_relaxed(${args});
+	${retstmt}${arch}${atomic}_${pfx}${name}${sfx}_relaxed(${args});
 }
 EOF
diff --git a/scripts/atomic/fallbacks/set_release b/scripts/atomic/fallbacks/set_release
index 45bb5e0..7606827 100755
--- a/scripts/atomic/fallbacks/set_release
+++ b/scripts/atomic/fallbacks/set_release
@@ -1,6 +1,6 @@
 cat <<EOF
-static inline void
-${atomic}_set_release(${atomic}_t *v, ${int} i)
+static __always_inline void
+${arch}${atomic}_set_release(${atomic}_t *v, ${int} i)
 {
 	smp_store_release(&(v)->counter, i);
 }
diff --git a/scripts/atomic/fallbacks/sub_and_test b/scripts/atomic/fallbacks/sub_and_test
index 289ef17..c580f4c 100755
--- a/scripts/atomic/fallbacks/sub_and_test
+++ b/scripts/atomic/fallbacks/sub_and_test
@@ -1,6 +1,6 @@
 cat <<EOF
 /**
- * ${atomic}_sub_and_test - subtract value from variable and test result
+ * ${arch}${atomic}_sub_and_test - subtract value from variable and test result
  * @i: integer value to subtract
  * @v: pointer of type ${atomic}_t
  *
@@ -8,9 +8,9 @@
  * true if the result is zero, or false for all
  * other cases.
  */
-static inline bool
-${atomic}_sub_and_test(${int} i, ${atomic}_t *v)
+static __always_inline bool
+${arch}${atomic}_sub_and_test(${int} i, ${atomic}_t *v)
 {
-	return ${atomic}_sub_return(i, v) == 0;
+	return ${arch}${atomic}_sub_return(i, v) == 0;
 }
 EOF
diff --git a/scripts/atomic/fallbacks/try_cmpxchg b/scripts/atomic/fallbacks/try_cmpxchg
index 4ed85e2..06db0f7 100755
--- a/scripts/atomic/fallbacks/try_cmpxchg
+++ b/scripts/atomic/fallbacks/try_cmpxchg
@@ -1,9 +1,9 @@
 cat <<EOF
-static inline bool
-${atomic}_try_cmpxchg${order}(${atomic}_t *v, ${int} *old, ${int} new)
+static __always_inline bool
+${arch}${atomic}_try_cmpxchg${order}(${atomic}_t *v, ${int} *old, ${int} new)
 {
 	${int} r, o = *old;
-	r = ${atomic}_cmpxchg${order}(v, o, new);
+	r = ${arch}${atomic}_cmpxchg${order}(v, o, new);
 	if (unlikely(r != o))
 		*old = r;
 	return likely(r == o);
diff --git a/scripts/atomic/gen-atomic-fallback.sh b/scripts/atomic/gen-atomic-fallback.sh
index 1bd7c17..693dfa1 100755
--- a/scripts/atomic/gen-atomic-fallback.sh
+++ b/scripts/atomic/gen-atomic-fallback.sh
@@ -2,10 +2,11 @@
 # SPDX-License-Identifier: GPL-2.0
 
 ATOMICDIR=$(dirname $0)
+ARCH=$2
 
 . ${ATOMICDIR}/atomic-tbl.sh
 
-#gen_template_fallback(template, meta, pfx, name, sfx, order, atomic, int, args...)
+#gen_template_fallback(template, meta, pfx, name, sfx, order, arch, atomic, int, args...)
 gen_template_fallback()
 {
 	local template="$1"; shift
@@ -14,10 +15,11 @@
 	local name="$1"; shift
 	local sfx="$1"; shift
 	local order="$1"; shift
+	local arch="$1"; shift
 	local atomic="$1"; shift
 	local int="$1"; shift
 
-	local atomicname="${atomic}_${pfx}${name}${sfx}${order}"
+	local atomicname="${arch}${atomic}_${pfx}${name}${sfx}${order}"
 
 	local ret="$(gen_ret_type "${meta}" "${int}")"
 	local retstmt="$(gen_ret_stmt "${meta}")"
@@ -32,7 +34,7 @@
 	fi
 }
 
-#gen_proto_fallback(meta, pfx, name, sfx, order, atomic, int, args...)
+#gen_proto_fallback(meta, pfx, name, sfx, order, arch, atomic, int, args...)
 gen_proto_fallback()
 {
 	local meta="$1"; shift
@@ -56,19 +58,51 @@
 EOF
 }
 
-#gen_proto_order_variants(meta, pfx, name, sfx, atomic, int, args...)
+gen_proto_order_variant()
+{
+	local meta="$1"; shift
+	local pfx="$1"; shift
+	local name="$1"; shift
+	local sfx="$1"; shift
+	local order="$1"; shift
+	local arch="$1"
+	local atomic="$2"
+
+	local basename="${arch}${atomic}_${pfx}${name}${sfx}"
+
+	printf "#define arch_${basename}${order} ${basename}${order}\n"
+}
+
+#gen_proto_order_variants(meta, pfx, name, sfx, arch, atomic, int, args...)
 gen_proto_order_variants()
 {
 	local meta="$1"; shift
 	local pfx="$1"; shift
 	local name="$1"; shift
 	local sfx="$1"; shift
-	local atomic="$1"
+	local arch="$1"
+	local atomic="$2"
 
-	local basename="${atomic}_${pfx}${name}${sfx}"
+	local basename="${arch}${atomic}_${pfx}${name}${sfx}"
 
 	local template="$(find_fallback_template "${pfx}" "${name}" "${sfx}" "${order}")"
 
+	if [ -z "$arch" ]; then
+		gen_proto_order_variant "${meta}" "${pfx}" "${name}" "${sfx}" "" "$@"
+
+		if meta_has_acquire "${meta}"; then
+			gen_proto_order_variant "${meta}" "${pfx}" "${name}" "${sfx}" "_acquire" "$@"
+		fi
+		if meta_has_release "${meta}"; then
+			gen_proto_order_variant "${meta}" "${pfx}" "${name}" "${sfx}" "_release" "$@"
+		fi
+		if meta_has_relaxed "${meta}"; then
+			gen_proto_order_variant "${meta}" "${pfx}" "${name}" "${sfx}" "_relaxed" "$@"
+		fi
+
+		echo ""
+	fi
+
 	# If we don't have relaxed atomics, then we don't bother with ordering fallbacks
 	# read_acquire and set_release need to be templated, though
 	if ! meta_has_relaxed "${meta}"; then
@@ -94,7 +128,7 @@
 	gen_basic_fallbacks "${basename}"
 
 	if [ ! -z "${template}" ]; then
-		printf "#endif /* ${atomic}_${pfx}${name}${sfx} */\n\n"
+		printf "#endif /* ${arch}${atomic}_${pfx}${name}${sfx} */\n\n"
 		gen_proto_fallback "${meta}" "${pfx}" "${name}" "${sfx}" "" "$@"
 		gen_proto_fallback "${meta}" "${pfx}" "${name}" "${sfx}" "_acquire" "$@"
 		gen_proto_fallback "${meta}" "${pfx}" "${name}" "${sfx}" "_release" "$@"
@@ -149,20 +183,19 @@
 #ifndef _LINUX_ATOMIC_FALLBACK_H
 #define _LINUX_ATOMIC_FALLBACK_H
 
+#include <linux/compiler.h>
+
 EOF
 
-for xchg in "xchg" "cmpxchg" "cmpxchg64"; do
+for xchg in "${ARCH}xchg" "${ARCH}cmpxchg" "${ARCH}cmpxchg64"; do
 	gen_xchg_fallbacks "${xchg}"
 done
 
 grep '^[a-z]' "$1" | while read name meta args; do
-	gen_proto "${meta}" "${name}" "atomic" "int" ${args}
+	gen_proto "${meta}" "${name}" "${ARCH}" "atomic" "int" ${args}
 done
 
 cat <<EOF
-#define atomic_cond_read_acquire(v, c) smp_cond_load_acquire(&(v)->counter, (c))
-#define atomic_cond_read_relaxed(v, c) smp_cond_load_relaxed(&(v)->counter, (c))
-
 #ifdef CONFIG_GENERIC_ATOMIC64
 #include <asm-generic/atomic64.h>
 #endif
@@ -170,12 +203,9 @@
 EOF
 
 grep '^[a-z]' "$1" | while read name meta args; do
-	gen_proto "${meta}" "${name}" "atomic64" "s64" ${args}
+	gen_proto "${meta}" "${name}" "${ARCH}" "atomic64" "s64" ${args}
 done
 
 cat <<EOF
-#define atomic64_cond_read_acquire(v, c) smp_cond_load_acquire(&(v)->counter, (c))
-#define atomic64_cond_read_relaxed(v, c) smp_cond_load_relaxed(&(v)->counter, (c))
-
 #endif /* _LINUX_ATOMIC_FALLBACK_H */
 EOF
diff --git a/scripts/atomic/gen-atomic-instrumented.sh b/scripts/atomic/gen-atomic-instrumented.sh
index e098123..2b7fec7 100755
--- a/scripts/atomic/gen-atomic-instrumented.sh
+++ b/scripts/atomic/gen-atomic-instrumented.sh
@@ -5,9 +5,10 @@
 
 . ${ATOMICDIR}/atomic-tbl.sh
 
-#gen_param_check(arg)
+#gen_param_check(meta, arg)
 gen_param_check()
 {
+	local meta="$1"; shift
 	local arg="$1"; shift
 	local type="${arg%%:*}"
 	local name="$(gen_param_name "${arg}")"
@@ -17,17 +18,25 @@
 	i) return;;
 	esac
 
-	# We don't write to constant parameters
-	[ ${type#c} != ${type} ] && rw="read"
+	if [ ${type#c} != ${type} ]; then
+		# We don't write to constant parameters.
+		rw="read"
+	elif [ "${meta}" != "s" ]; then
+		# An atomic RMW: if this parameter is not a constant, and this atomic is
+		# not just a 's'tore, this parameter is both read from and written to.
+		rw="read_write"
+	fi
 
-	printf "\tkasan_check_${rw}(${name}, sizeof(*${name}));\n"
+	printf "\tinstrument_atomic_${rw}(${name}, sizeof(*${name}));\n"
 }
 
-#gen_param_check(arg...)
+#gen_params_checks(meta, arg...)
 gen_params_checks()
 {
+	local meta="$1"; shift
+
 	while [ "$#" -gt 0 ]; do
-		gen_param_check "$1"
+		gen_param_check "$meta" "$1"
 		shift;
 	done
 }
@@ -77,14 +86,14 @@
 
 	local ret="$(gen_ret_type "${meta}" "${int}")"
 	local params="$(gen_params "${int}" "${atomic}" "$@")"
-	local checks="$(gen_params_checks "$@")"
+	local checks="$(gen_params_checks "${meta}" "$@")"
 	local args="$(gen_args "$@")"
 	local retstmt="$(gen_ret_stmt "${meta}")"
 
 	[ ! -z "${guard}" ] && printf "#if ${guard}\n"
 
 cat <<EOF
-static inline ${ret}
+static __always_inline ${ret}
 ${atomicname}(${params})
 {
 ${checks}
@@ -107,7 +116,7 @@
 #define ${xchg}(ptr, ...)						\\
 ({									\\
 	typeof(ptr) __ai_ptr = (ptr);					\\
-	kasan_check_write(__ai_ptr, ${mult}sizeof(*__ai_ptr));		\\
+	instrument_atomic_write(__ai_ptr, ${mult}sizeof(*__ai_ptr));		\\
 	arch_${xchg}(__ai_ptr, __VA_ARGS__);				\\
 })
 EOF
@@ -147,7 +156,8 @@
 #define _ASM_GENERIC_ATOMIC_INSTRUMENTED_H
 
 #include <linux/build_bug.h>
-#include <linux/kasan-checks.h>
+#include <linux/compiler.h>
+#include <linux/instrumented.h>
 
 EOF
 
diff --git a/scripts/atomic/gen-atomic-long.sh b/scripts/atomic/gen-atomic-long.sh
index c240a72..e318d3f 100755
--- a/scripts/atomic/gen-atomic-long.sh
+++ b/scripts/atomic/gen-atomic-long.sh
@@ -46,7 +46,7 @@
 	local retstmt="$(gen_ret_stmt "${meta}")"
 
 cat <<EOF
-static inline ${ret}
+static __always_inline ${ret}
 atomic_long_${name}(${params})
 {
 	${retstmt}${atomic}_${name}(${argscast});
@@ -64,6 +64,7 @@
 #ifndef _ASM_GENERIC_ATOMIC_LONG_H
 #define _ASM_GENERIC_ATOMIC_LONG_H
 
+#include <linux/compiler.h>
 #include <asm/types.h>
 
 #ifdef CONFIG_64BIT
diff --git a/scripts/atomic/gen-atomics.sh b/scripts/atomic/gen-atomics.sh
index 000dc64..d29e159 100644
--- a/scripts/atomic/gen-atomics.sh
+++ b/scripts/atomic/gen-atomics.sh
@@ -10,10 +10,11 @@
 cat <<EOF |
 gen-atomic-instrumented.sh      asm-generic/atomic-instrumented.h
 gen-atomic-long.sh              asm-generic/atomic-long.h
+gen-atomic-fallback.sh          linux/atomic-arch-fallback.h		arch_
 gen-atomic-fallback.sh          linux/atomic-fallback.h
 EOF
-while read script header; do
-	/bin/sh ${ATOMICDIR}/${script} ${ATOMICTBL} > ${LINUXDIR}/include/${header}
+while read script header args; do
+	/bin/sh ${ATOMICDIR}/${script} ${ATOMICTBL} ${args} > ${LINUXDIR}/include/${header}
 	HASH="$(sha1sum ${LINUXDIR}/include/${header})"
 	HASH="${HASH%% *}"
 	printf "// %s\n" "${HASH}" >> ${LINUXDIR}/include/${header}
diff --git a/scripts/basic/.gitignore b/scripts/basic/.gitignore
index a776371..98ae1f5 100644
--- a/scripts/basic/.gitignore
+++ b/scripts/basic/.gitignore
@@ -1 +1,2 @@
+# SPDX-License-Identifier: GPL-2.0-only
 fixdep
diff --git a/scripts/basic/Makefile b/scripts/basic/Makefile
index 7c9cb80..eeb6a38 100644
--- a/scripts/basic/Makefile
+++ b/scripts/basic/Makefile
@@ -2,5 +2,4 @@
 #
 # fixdep: used to generate dependency information during build process
 
-hostprogs-y	:= fixdep
-always		:= $(hostprogs-y)
+hostprogs-always-y	+= fixdep
diff --git a/scripts/basic/fixdep.c b/scripts/basic/fixdep.c
index 9ba47b0..d985405 100644
--- a/scripts/basic/fixdep.c
+++ b/scripts/basic/fixdep.c
@@ -77,11 +77,6 @@
  * dependencies on include/config/my/option.h for every
  * CONFIG_MY_OPTION encountered in any of the prerequisites.
  *
- * It will also filter out all the dependencies on *.ver. We need
- * to make sure that the generated version checksum are globally up
- * to date before even starting the recursive build, so it's too late
- * at this point anyway.
- *
  * We don't even try to really parse the header files, but
  * merely grep, i.e. if CONFIG_FOO is mentioned in a comment, it will
  * be picked up as well. It's not a problem with respect to
@@ -165,7 +160,7 @@
 	struct item	*next;
 	unsigned int	len;
 	unsigned int	hash;
-	char		name[0];
+	char		name[];
 };
 
 #define HASHSZ 256
@@ -251,7 +246,7 @@
 		}
 		p += 7;
 		q = p;
-		while (*q && (isalnum(*q) || *q == '_'))
+		while (isalnum(*q) || *q == '_')
 			q++;
 		if (str_ends_with(p, q - p, "_MODULE"))
 			r = q - 7;
@@ -299,8 +294,7 @@
 static int is_ignored_file(const char *s, int len)
 {
 	return str_ends_with(s, len, "include/generated/autoconf.h") ||
-	       str_ends_with(s, len, "include/generated/autoksyms.h") ||
-	       str_ends_with(s, len, ".ver");
+	       str_ends_with(s, len, "include/generated/autoksyms.h");
 }
 
 /*
diff --git a/scripts/bloat-o-meter b/scripts/bloat-o-meter
index a1b9510..dcd8d87 100755
--- a/scripts/bloat-o-meter
+++ b/scripts/bloat-o-meter
@@ -26,6 +26,8 @@
     sym = {}
     with os.popen("nm --size-sort " + file) as f:
         for line in f:
+            if line.startswith("\n") or ":" in line:
+                continue
             size, type, name = line.split()
             if type in format:
                 # strip generated symbols
diff --git a/scripts/bpf_helpers_doc.py b/scripts/bpf_helpers_doc.py
index 894cc58..3148437 100755
--- a/scripts/bpf_helpers_doc.py
+++ b/scripts/bpf_helpers_doc.py
@@ -1,4 +1,4 @@
-#!/usr/bin/python3
+#!/usr/bin/env python3
 # SPDX-License-Identifier: GPL-2.0-only
 #
 # Copyright (C) 2018-2019 Netronome Systems, Inc.
@@ -158,8 +158,6 @@
                 break
 
         self.reader.close()
-        print('Parsed description of %d helper function(s)' % len(self.helpers),
-              file=sys.stderr)
 
 ###############################################################################
 
@@ -320,6 +318,11 @@
   of eBPF maps are used with a given helper function.
 * *kernel/bpf/* directory contains other files in which additional helpers are
   defined (for cgroups, sockmaps, etc.).
+* The bpftool utility can be used to probe the availability of helper functions
+  on the system (as well as supported program and map types, and a number of
+  other parameters). To do so, run **bpftool feature probe** (see
+  **bpftool-feature**\ (8) for details). Add the **unprivileged** keyword to
+  list features available to unprivileged users.
 
 Compatibility between helper functions and program types can generally be found
 in the files where helper functions are defined. Look for the **struct
@@ -340,6 +343,7 @@
 ========
 
 **bpf**\ (2),
+**bpftool**\ (8),
 **cgroups**\ (7),
 **ip**\ (8),
 **perf_event_open**\ (2),
@@ -391,6 +395,183 @@
 
         print('')
 
+class PrinterHelpers(Printer):
+    """
+    A printer for dumping collected information about helpers as C header to
+    be included from BPF program.
+    @helpers: array of Helper objects to print to standard output
+    """
+
+    type_fwds = [
+            'struct bpf_fib_lookup',
+            'struct bpf_sk_lookup',
+            'struct bpf_perf_event_data',
+            'struct bpf_perf_event_value',
+            'struct bpf_pidns_info',
+            'struct bpf_redir_neigh',
+            'struct bpf_sock',
+            'struct bpf_sock_addr',
+            'struct bpf_sock_ops',
+            'struct bpf_sock_tuple',
+            'struct bpf_spin_lock',
+            'struct bpf_sysctl',
+            'struct bpf_tcp_sock',
+            'struct bpf_tunnel_key',
+            'struct bpf_xfrm_state',
+            'struct pt_regs',
+            'struct sk_reuseport_md',
+            'struct sockaddr',
+            'struct tcphdr',
+            'struct seq_file',
+            'struct tcp6_sock',
+            'struct tcp_sock',
+            'struct tcp_timewait_sock',
+            'struct tcp_request_sock',
+            'struct udp6_sock',
+            'struct task_struct',
+
+            'struct __sk_buff',
+            'struct sk_msg_md',
+            'struct xdp_md',
+            'struct path',
+            'struct btf_ptr',
+    ]
+    known_types = {
+            '...',
+            'void',
+            'const void',
+            'char',
+            'const char',
+            'int',
+            'long',
+            'unsigned long',
+
+            '__be16',
+            '__be32',
+            '__wsum',
+
+            'struct bpf_fib_lookup',
+            'struct bpf_perf_event_data',
+            'struct bpf_perf_event_value',
+            'struct bpf_pidns_info',
+            'struct bpf_redir_neigh',
+            'struct bpf_sk_lookup',
+            'struct bpf_sock',
+            'struct bpf_sock_addr',
+            'struct bpf_sock_ops',
+            'struct bpf_sock_tuple',
+            'struct bpf_spin_lock',
+            'struct bpf_sysctl',
+            'struct bpf_tcp_sock',
+            'struct bpf_tunnel_key',
+            'struct bpf_xfrm_state',
+            'struct pt_regs',
+            'struct sk_reuseport_md',
+            'struct sockaddr',
+            'struct tcphdr',
+            'struct seq_file',
+            'struct tcp6_sock',
+            'struct tcp_sock',
+            'struct tcp_timewait_sock',
+            'struct tcp_request_sock',
+            'struct udp6_sock',
+            'struct task_struct',
+            'struct path',
+            'struct btf_ptr',
+    }
+    mapped_types = {
+            'u8': '__u8',
+            'u16': '__u16',
+            'u32': '__u32',
+            'u64': '__u64',
+            's8': '__s8',
+            's16': '__s16',
+            's32': '__s32',
+            's64': '__s64',
+            'size_t': 'unsigned long',
+            'struct bpf_map': 'void',
+            'struct sk_buff': 'struct __sk_buff',
+            'const struct sk_buff': 'const struct __sk_buff',
+            'struct sk_msg_buff': 'struct sk_msg_md',
+            'struct xdp_buff': 'struct xdp_md',
+    }
+    # Helpers overloaded for different context types.
+    overloaded_helpers = [
+        'bpf_get_socket_cookie',
+        'bpf_sk_assign',
+    ]
+
+    def print_header(self):
+        header = '''\
+/* This is auto-generated file. See bpf_helpers_doc.py for details. */
+
+/* Forward declarations of BPF structs */'''
+
+        print(header)
+        for fwd in self.type_fwds:
+            print('%s;' % fwd)
+        print('')
+
+    def print_footer(self):
+        footer = ''
+        print(footer)
+
+    def map_type(self, t):
+        if t in self.known_types:
+            return t
+        if t in self.mapped_types:
+            return self.mapped_types[t]
+        print("Unrecognized type '%s', please add it to known types!" % t,
+              file=sys.stderr)
+        sys.exit(1)
+
+    seen_helpers = set()
+
+    def print_one(self, helper):
+        proto = helper.proto_break_down()
+
+        if proto['name'] in self.seen_helpers:
+            return
+        self.seen_helpers.add(proto['name'])
+
+        print('/*')
+        print(" * %s" % proto['name'])
+        print(" *")
+        if (helper.desc):
+            # Do not strip all newline characters: formatted code at the end of
+            # a section must be followed by a blank line.
+            for line in re.sub('\n$', '', helper.desc, count=1).split('\n'):
+                print(' *{}{}'.format(' \t' if line else '', line))
+
+        if (helper.ret):
+            print(' *')
+            print(' * Returns')
+            for line in helper.ret.rstrip().split('\n'):
+                print(' *{}{}'.format(' \t' if line else '', line))
+
+        print(' */')
+        print('static %s %s(*%s)(' % (self.map_type(proto['ret_type']),
+                                      proto['ret_star'], proto['name']), end='')
+        comma = ''
+        for i, a in enumerate(proto['args']):
+            t = a['type']
+            n = a['name']
+            if proto['name'] in self.overloaded_helpers and i == 0:
+                    t = 'void'
+                    n = 'ctx'
+            one_arg = '{}{}'.format(comma, self.map_type(t))
+            if n:
+                if a['star']:
+                    one_arg += ' {}'.format(a['star'])
+                else:
+                    one_arg += ' '
+                one_arg += '{}'.format(n)
+            comma = ', '
+            print(one_arg, end='')
+
+        print(') = (void *) %d;' % len(self.seen_helpers))
+        print('')
+
 ###############################################################################
 
 # If script is launched from scripts/ from kernel tree and can access
@@ -405,6 +586,8 @@
 The RST-formatted output produced can be turned into a manual page with the
 rst2man utility.
 """)
+argParser.add_argument('--header', action='store_true',
+                       help='generate C header file')
 if (os.path.isfile(bpfh)):
     argParser.add_argument('--filename', help='path to include/uapi/linux/bpf.h',
                            default=bpfh)
@@ -417,5 +600,8 @@
 headerParser.run()
 
 # Print formatted output to standard output.
-printer = PrinterRST(headerParser.helpers)
+if args.header:
+    printer = PrinterHelpers(headerParser.helpers)
+else:
+    printer = PrinterRST(headerParser.helpers)
 printer.print_all()
diff --git a/scripts/check-sysctl-docs b/scripts/check-sysctl-docs
new file mode 100755
index 0000000..8bcb9e2
--- /dev/null
+++ b/scripts/check-sysctl-docs
@@ -0,0 +1,181 @@
+#!/usr/bin/gawk -f
+# SPDX-License-Identifier: GPL-2.0
+
+# Script to check sysctl documentation against source files
+#
+# Copyright (c) 2020 Stephen Kitt
+
+# Example invocation:
+#	scripts/check-sysctl-docs -vtable="kernel" \
+#		Documentation/admin-guide/sysctl/kernel.rst \
+#		$(git grep -l register_sysctl_)
+#
+# Specify -vdebug=1 to see debugging information
+
+BEGIN {
+    if (!table) {
+	print "Please specify the table to look for using the table variable" > "/dev/stderr"
+	exit 1
+    }
+}
+
+# The following globals are used:
+# children: maps ctl_table names and procnames to child ctl_table names
+# documented: maps documented entries (each key is an entry)
+# entries: maps ctl_table names and procnames to counts (so
+#          enumerating the subkeys for a given ctl_table lists its
+#          procnames)
+# files: maps procnames to source file names
+# paths: maps ctl_path names to paths
+# curpath: the name of the current ctl_path struct
+# curtable: the name of the current ctl_table struct
+# curentry: the name of the current proc entry (procname when parsing
+#           a ctl_table, constructed path when parsing a ctl_path)
+
+
+# Remove punctuation from the given value
+function trimpunct(value) {
+    while (value ~ /^["&]/) {
+	value = substr(value, 2)
+    }
+    while (value ~ /[]["&,}]$/) {
+	value = substr(value, 1, length(value) - 1)
+    }
+    return value
+}
+
+# Print the information for the given entry
+function printentry(entry) {
+    seen[entry]++
+    printf "* %s from %s", entry, file[entry]
+    if (documented[entry]) {
+	printf " (documented)"
+    }
+    print ""
+}
+
+
+# Stage 1: build the list of documented entries
+FNR == NR && /^=+$/ {
+    if (prevline ~ /Documentation for/) {
+	# This is the main title
+	next
+    }
+
+    # The previous line is a section title, parse it
+    $0 = prevline
+    if (debug) print "Parsing " $0
+    inbrackets = 0
+    for (i = 1; i <= NF; i++) {
+	if (length($i) == 0) {
+	    continue
+	}
+	if (!inbrackets && substr($i, 1, 1) == "(") {
+	    inbrackets = 1
+	}
+	if (!inbrackets) {
+	    token = trimpunct($i)
+	    if (length(token) > 0 && token != "and") {
+		if (debug) print trimpunct($i)
+		documented[trimpunct($i)]++
+	    }
+	}
+	if (inbrackets && substr($i, length($i), 1) == ")") {
+	    inbrackets = 0
+	}
+    }
+}
+
+FNR == NR {
+    prevline = $0
+    next
+}
+
+
+# Stage 2: process each file and find all sysctl tables
+BEGINFILE {
+    delete children
+    delete entries
+    delete paths
+    curpath = ""
+    curtable = ""
+    curentry = ""
+    if (debug) print "Processing file " FILENAME
+}
+
+/^static struct ctl_path/ {
+    match($0, /static struct ctl_path ([^][]+)/, tables)
+    curpath = tables[1]
+    if (debug) print "Processing path " curpath
+}
+
+/^static struct ctl_table/ {
+    match($0, /static struct ctl_table ([^][]+)/, tables)
+    curtable = tables[1]
+    if (debug) print "Processing table " curtable
+}
+
+/^};$/ {
+    curpath = ""
+    curtable = ""
+    curentry = ""
+}
+
+curpath && /\.procname[\t ]*=[\t ]*".+"/ {
+    match($0, /.procname[\t ]*=[\t ]*"([^"]+)"/, names)
+    if (curentry) {
+	curentry = curentry "/" names[1]
+    } else {
+	curentry = names[1]
+    }
+    if (debug) print "Setting path " curpath " to " curentry
+    paths[curpath] = curentry
+}
+
+curtable && /\.procname[\t ]*=[\t ]*".+"/ {
+    match($0, /.procname[\t ]*=[\t ]*"([^"]+)"/, names)
+    curentry = names[1]
+    if (debug) print "Adding entry " curentry " to table " curtable
+    entries[curtable][curentry]++
+    file[curentry] = FILENAME
+}
+
+/\.child[\t ]*=/ {
+    child = trimpunct($NF)
+    if (debug) print "Linking child " child " to table " curtable " entry " curentry
+    children[curtable][curentry] = child
+}
+
+/register_sysctl_table\(.*\)/ {
+    match($0, /register_sysctl_table\(([^)]+)\)/, tables)
+    if (debug) print "Registering table " tables[1]
+    if (children[tables[1]][table]) {
+	for (entry in entries[children[tables[1]][table]]) {
+	    printentry(entry)
+	}
+    }
+}
+
+/register_sysctl_paths\(.*\)/ {
+    match($0, /register_sysctl_paths\(([^)]+), ([^)]+)\)/, tables)
+    if (debug) print "Attaching table " tables[2] " to path " tables[1]
+    if (paths[tables[1]] == table) {
+	for (entry in entries[tables[2]]) {
+	    printentry(entry)
+	}
+    }
+    split(paths[tables[1]], components, "/")
+    if (length(components) > 1 && components[1] == table) {
+	# Count the first subdirectory as seen
+	seen[components[2]]++
+    }
+}
+
+
+END {
+    for (entry in documented) {
+	if (!seen[entry]) {
+	    print "No implementation for " entry
+	}
+    }
+}
diff --git a/scripts/checkkconfigsymbols.py b/scripts/checkkconfigsymbols.py
index 00a10a2..1548f9c 100755
--- a/scripts/checkkconfigsymbols.py
+++ b/scripts/checkkconfigsymbols.py
@@ -34,7 +34,7 @@
 REGEX_KCONFIG_DEF = re.compile(DEF)
 REGEX_KCONFIG_EXPR = re.compile(EXPR)
 REGEX_KCONFIG_STMT = re.compile(STMT)
-REGEX_KCONFIG_HELP = re.compile(r"^\s+(help|---help---)\s*$")
+REGEX_KCONFIG_HELP = re.compile(r"^\s+help\s*$")
 REGEX_FILTER_SYMBOLS = re.compile(r"[A-Za-z0-9]$")
 REGEX_NUMERIC = re.compile(r"0[xX][0-9a-fA-F]+|[0-9]+")
 REGEX_QUOTES = re.compile("(\"(.*?)\")")
diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index a358af9..0ad235e 100755
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -43,6 +43,8 @@
 my $fix = 0;
 my $fix_inplace = 0;
 my $root;
+my $gitroot = $ENV{'GIT_DIR'};
+$gitroot = ".git" if !defined($gitroot);
 my %debug;
 my %camelcase = ();
 my %use_type = ();
@@ -51,7 +53,7 @@
 my @ignore = ();
 my $help = 0;
 my $configuration_file = ".checkpatch.conf";
-my $max_line_length = 80;
+my $max_line_length = 100;
 my $ignore_perl_version = 0;
 my $minimum_perl_version = 5.10.0;
 my $min_conf_desc_length = 4;
@@ -59,11 +61,13 @@
 my $codespell = 0;
 my $codespellfile = "/usr/share/codespell/dictionary.txt";
 my $conststructsfile = "$D/const_structs.checkpatch";
-my $typedefsfile = "";
+my $typedefsfile;
 my $color = "auto";
 my $allow_c99_comments = 1; # Can be overridden by --ignore C99_COMMENT_TOLERANCE
 # git output parsing needs US English output, so first set backtick child process LANGUAGE
 my $git_command ='export LANGUAGE=en_US.UTF-8; git';
+my $tabsize = 8;
+my ${CONFIG_} = "CONFIG_";
 
 sub help {
 	my ($exitcode) = @_;
@@ -96,8 +100,11 @@
   --types TYPE(,TYPE2...)    show only these comma separated message types
   --ignore TYPE(,TYPE2...)   ignore various comma separated message types
   --show-types               show the specific message type in the output
-  --max-line-length=n        set the maximum line length, if exceeded, warn
+  --max-line-length=n        set the maximum line length, (default $max_line_length)
+                             if exceeded, warn on patches
+                             requires --strict for use with --file
   --min-conf-desc-length=n   set the min description length, if shorter, warn
+  --tab-size=n               set the number of spaces for tab (default $tabsize)
   --root=PATH                PATH to the kernel tree root
   --no-summary               suppress the per-file summary
   --mailback                 only produce a report in case of warnings/errors
@@ -123,6 +130,8 @@
   --typedefsfile             Read additional types from this file
   --color[=WHEN]             Use colors 'always', 'never', or only when output
                              is a terminal ('auto'). Default is 'auto'.
+  --kconfig-prefix=WORD      use WORD as a prefix for Kconfig symbols (default
+                             ${CONFIG_})
   -h, --help, --version      display this help and exit
 
 When FILE is - read standard input.
@@ -215,6 +224,7 @@
 	'list-types!'	=> \$list_types,
 	'max-line-length=i' => \$max_line_length,
 	'min-conf-desc-length=i' => \$min_conf_desc_length,
+	'tab-size=i'	=> \$tabsize,
 	'root=s'	=> \$root,
 	'summary!'	=> \$summary,
 	'mailback!'	=> \$mailback,
@@ -230,6 +240,7 @@
 	'color=s'	=> \$color,
 	'no-color'	=> \$color,	#keep old behaviors of -nocolor
 	'nocolor'	=> \$color,	#keep old behaviors of -nocolor
+	'kconfig-prefix=s'	=> \${CONFIG_},
 	'h|help'	=> \$help,
 	'version'	=> \$help
 ) or help(1);
@@ -241,6 +252,8 @@
 $fix = 1 if ($fix_inplace);
 $check_orig = $check;
 
+die "$P: --git cannot be used with --file or --fix\n" if ($git && ($file || $fix));
+
 my $exit = 0;
 
 my $perl_version_ok = 1;
@@ -264,9 +277,12 @@
 } elsif ($color =~ /^auto$/i) {
 	$color = (-t STDOUT);
 } else {
-	die "Invalid color mode: $color\n";
+	die "$P: Invalid color mode: $color\n";
 }
 
+# skip TAB size 1 to avoid additional checks on $tabsize - 1
+die "$P: Invalid TAB size: $tabsize\n" if ($tabsize < 2);
+
 sub hash_save_array_words {
 	my ($hashRef, $arrayRef) = @_;
 
@@ -473,7 +489,7 @@
 		(?:kv|k|v)[czm]alloc(?:_node|_array)? |
 		kstrdup(?:_const)? |
 		kmemdup(?:_nul)?) |
-	(?:\w+)?alloc_skb(?:ip_align)? |
+	(?:\w+)?alloc_skb(?:_ip_align)? |
 				# dev_alloc_skb/netdev_alloc_skb, et al
 	dma_alloc_coherent
 )};
@@ -578,6 +594,8 @@
 	["__ATTR", 2],
 );
 
+my $word_pattern = '\b[A-Z]?[a-z]{2,}\b';
+
 #Create a search pattern for all these functions to speed up a loop below
 our $mode_perms_search = "";
 foreach my $entry (@mode_permission_funcs) {
@@ -746,7 +764,7 @@
 				next;
 			}
 
-			$$wordsRef .= '|' if ($$wordsRef ne "");
+			$$wordsRef .= '|' if (defined $$wordsRef);
 			$$wordsRef .= $line;
 		}
 		close($file);
@@ -756,16 +774,18 @@
 	return 0;
 }
 
-my $const_structs = "";
-read_words(\$const_structs, $conststructsfile)
-    or warn "No structs that should be const will be found - file '$conststructsfile': $!\n";
+my $const_structs;
+if (show_type("CONST_STRUCT")) {
+	read_words(\$const_structs, $conststructsfile)
+	    or warn "No structs that should be const will be found - file '$conststructsfile': $!\n";
+}
 
-my $typeOtherTypedefs = "";
-if (length($typedefsfile)) {
+if (defined($typedefsfile)) {
+	my $typeOtherTypedefs;
 	read_words(\$typeOtherTypedefs, $typedefsfile)
 	    or warn "No additional types will be considered - file '$typedefsfile': $!\n";
+	$typeTypedefs .= '|' . $typeOtherTypedefs if (defined $typeOtherTypedefs);
 }
-$typeTypedefs .= '|' . $typeOtherTypedefs if ($typeOtherTypedefs ne "");
 
 sub build_types {
 	my $mods = "(?x:  \n" . join("|\n  ", (@modifierList, @modifierListFile)) . "\n)";
@@ -804,12 +824,12 @@
 		  }x;
 	$Type	= qr{
 			$NonptrType
-			(?:(?:\s|\*|\[\])+\s*const|(?:\s|\*\s*(?:const\s*)?|\[\])+|(?:\s*\[\s*\])+)?
+			(?:(?:\s|\*|\[\])+\s*const|(?:\s|\*\s*(?:const\s*)?|\[\])+|(?:\s*\[\s*\])+){0,4}
 			(?:\s+$Inline|\s+$Modifier)*
 		  }x;
 	$TypeMisordered	= qr{
 			$NonptrTypeMisordered
-			(?:(?:\s|\*|\[\])+\s*const|(?:\s|\*\s*(?:const\s*)?|\[\])+|(?:\s*\[\s*\])+)?
+			(?:(?:\s|\*|\[\])+\s*const|(?:\s|\*\s*(?:const\s*)?|\[\])+|(?:\s*\[\s*\])+){0,4}
 			(?:\s+$Inline|\s+$Modifier)*
 		  }x;
 	$Declare	= qr{(?:$Storage\s+(?:$Inline\s+)?)?$Type};
@@ -830,7 +850,6 @@
 our $declaration_macros = qr{(?x:
 	(?:$Storage\s+)?(?:[A-Z_][A-Z0-9]*_){0,2}(?:DEFINE|DECLARE)(?:_[A-Z0-9]+){1,6}\s*\(|
 	(?:$Storage\s+)?[HLP]?LIST_HEAD\s*\(|
-	(?:$Storage\s+)?${Type}\s+uninitialized_var\s*\(|
 	(?:SKCIPHER_REQUEST|SHASH_DESC|AHASH_REQUEST)_ON_STACK\s*\(
 )};
 
@@ -874,20 +893,24 @@
 	}
 }
 
+our %maintained_status = ();
+
 sub is_maintained_obsolete {
 	my ($filename) = @_;
 
 	return 0 if (!$tree || !(-e "$root/scripts/get_maintainer.pl"));
 
-	my $status = `perl $root/scripts/get_maintainer.pl --status --nom --nol --nogit --nogit-fallback -f $filename 2>&1`;
+	if (!exists($maintained_status{$filename})) {
+		$maintained_status{$filename} = `perl $root/scripts/get_maintainer.pl --status --nom --nol --nogit --nogit-fallback -f $filename 2>&1`;
+	}
 
-	return $status =~ /obsolete/i;
+	return $maintained_status{$filename} =~ /obsolete/i;
 }
 
 sub is_SPDX_License_valid {
 	my ($license) = @_;
 
-	return 1 if (!$tree || which("python") eq "" || !(-e "$root/scripts/spdxcheck.py") || !(-e "$root/.git"));
+	return 1 if (!$tree || which("python") eq "" || !(-e "$root/scripts/spdxcheck.py") || !(-e "$gitroot"));
 
 	my $root_path = abs_path($root);
 	my $status = `cd "$root_path"; echo "$license" | python scripts/spdxcheck.py -`;
@@ -905,7 +928,7 @@
 
 	$camelcase_seeded = 1;
 
-	if (-e ".git") {
+	if (-e "$gitroot") {
 		my $git_last_include_commit = `${git_command} log --no-merges --pretty=format:"%h%n" -1 -- include`;
 		chomp $git_last_include_commit;
 		$camelcase_cache = ".checkpatch-camelcase.git.$git_last_include_commit";
@@ -933,7 +956,7 @@
 		return;
 	}
 
-	if (-e ".git") {
+	if (-e "$gitroot") {
 		$files = `${git_command} ls-files "include/*.h"`;
 		@include_files = split('\n', $files);
 	}
@@ -953,10 +976,20 @@
 	}
 }
 
+sub git_is_single_file {
+	my ($filename) = @_;
+
+	return 0 if ((which("git") eq "") || !(-e "$gitroot"));
+
+	my $output = `${git_command} ls-files -- $filename 2>/dev/null`;
+	my $count = $output =~ tr/\n//;
+	return $count eq 1 && $output =~ m{^${filename}$};
+}
+
 sub git_commit_info {
 	my ($commit, $id, $desc) = @_;
 
-	return ($id, $desc) if ((which("git") eq "") || !(-e ".git"));
+	return ($id, $desc) if ((which("git") eq "") || !(-e "$gitroot"));
 
 	my $output = `${git_command} log --no-color --format='%H %s' -1 $commit 2>&1`;
 	$output =~ s/^\s*//gm;
@@ -995,7 +1028,7 @@
 
 # If input is git commits, extract all commits from the commit expressions.
 # For example, HEAD-3 means we need check 'HEAD, HEAD~1, HEAD~2'.
-die "$P: No git repository found\n" if ($git && !-e ".git");
+die "$P: No git repository found\n" if ($git && !-e "$gitroot");
 
 if ($git) {
 	my @commits = ();
@@ -1026,6 +1059,9 @@
 $allow_c99_comments = !defined $ignore_type{"C99_COMMENT_TOLERANCE"};
 for my $filename (@ARGV) {
 	my $FILE;
+	my $is_git_file = git_is_single_file($filename);
+	my $oldfile = $file;
+	$file = 1 if ($is_git_file);
 	if ($git) {
 		open($FILE, '-|', "git format-patch -M --stdout -1 $filename") ||
 			die "$P: $filename: git format-patch failed - $!\n";
@@ -1048,6 +1084,7 @@
 	while (<$FILE>) {
 		chomp;
 		push(@rawlines, $_);
+		$vname = qq("$1") if ($filename eq '-' && $_ =~ m/^Subject:\s+(.+)/i);
 	}
 	close($FILE);
 
@@ -1069,6 +1106,7 @@
 	@modifierListFile = ();
 	@typeListFile = ();
 	build_types();
+	$file = $oldfile if ($is_git_file);
 }
 
 if (!$quiet) {
@@ -1114,6 +1152,7 @@
 	my ($formatted_email) = @_;
 
 	my $name = "";
+	my $name_comment = "";
 	my $address = "";
 	my $comment = "";
 
@@ -1144,8 +1183,12 @@
 		}
 	}
 
+	$comment = trim($comment);
 	$name = trim($name);
 	$name =~ s/^\"|\"$//g;
+	if ($name =~ s/(\s*\([^\)]+\))\s*//) {
+		$name_comment = trim($1);
+	}
 	$address = trim($address);
 	$address =~ s/^\<|\>$//g;
 
@@ -1154,14 +1197,16 @@
 		$name = "\"$name\"";
 	}
 
-	return ($name, $address, $comment);
+	return ($name, $name_comment, $address, $comment);
 }
 
 sub format_email {
-	my ($name, $address) = @_;
+	my ($name, $name_comment, $address, $comment) = @_;
 
 	my $formatted_email;
 
+	$name_comment = trim($name_comment);
+	$comment = trim($comment);
 	$name = trim($name);
 	$name =~ s/^\"|\"$//g;
 	$address = trim($address);
@@ -1174,12 +1219,35 @@
 	if ("$name" eq "") {
 		$formatted_email = "$address";
 	} else {
-		$formatted_email = "$name <$address>";
+		$formatted_email = "$name$name_comment <$address>";
 	}
-
+	$formatted_email .= "$comment";
 	return $formatted_email;
 }
 
+sub reformat_email {
+	my ($email) = @_;
+
+	my ($email_name, $name_comment, $email_address, $comment) = parse_email($email);
+	return format_email($email_name, $name_comment, $email_address, $comment);
+}
+
+sub same_email_addresses {
+	my ($email1, $email2, $match_comment) = @_;
+
+	my ($email1_name, $name1_comment, $email1_address, $comment1) = parse_email($email1);
+	my ($email2_name, $name2_comment, $email2_address, $comment2) = parse_email($email2);
+
+	if ($match_comment != 1) {
+		return $email1_name eq $email2_name &&
+		       $email1_address eq $email2_address;
+	}
+	return $email1_name eq $email2_name &&
+	       $email1_address eq $email2_address &&
+	       $name1_comment eq $name2_comment &&
+	       $comment1 eq $comment2;
+}
+
 sub which {
 	my ($bin) = @_;
 
@@ -1213,7 +1281,7 @@
 		if ($c eq "\t") {
 			$res .= ' ';
 			$n++;
-			for (; ($n % 8) != 0; $n++) {
+			for (; ($n % $tabsize) != 0; $n++) {
 				$res .= ' ';
 			}
 			next;
@@ -1642,8 +1710,16 @@
 sub ctx_locate_comment {
 	my ($first_line, $end_line) = @_;
 
+	# If c99 comment on the current line, or the line before or after
+	my ($current_comment) = ($rawlines[$end_line - 1] =~ m@^\+.*(//.*$)@);
+	return $current_comment if (defined $current_comment);
+	($current_comment) = ($rawlines[$end_line - 2] =~ m@^[\+ ].*(//.*$)@);
+	return $current_comment if (defined $current_comment);
+	($current_comment) = ($rawlines[$end_line] =~ m@^[\+ ].*(//.*$)@);
+	return $current_comment if (defined $current_comment);
+
 	# Catch a comment on the end of the line itself.
-	my ($current_comment) = ($rawlines[$end_line - 1] =~ m@.*(/\*.*\*/)\s*(?:\\\s*)?$@);
+	($current_comment) = ($rawlines[$end_line - 1] =~ m@.*(/\*.*\*/)\s*(?:\\\s*)?$@);
 	return $current_comment if (defined $current_comment);
 
 	# Look through the context and try and figure out if there is a
@@ -2226,7 +2302,7 @@
 sub tabify {
 	my ($leading) = @_;
 
-	my $source_indent = 8;
+	my $source_indent = $tabsize;
 	my $max_spaces_before_tab = $source_indent - 1;
 	my $spaces_to_tab = " " x $source_indent;
 
@@ -2268,6 +2344,19 @@
 	return length(expand_tabs(substr($line, 0, $last_openparen))) + 1;
 }
 
+sub get_raw_comment {
+	my ($line, $rawline) = @_;
+	my $comment = '';
+
+	for my $i (0 .. (length($line) - 1)) {
+		if (substr($line, $i, 1) eq "$;") {
+			$comment .= substr($rawline, $i, 1);
+		}
+	}
+
+	return $comment;
+}
+
 sub process {
 	my $filename = shift;
 
@@ -2286,10 +2375,12 @@
 	my $signoff = 0;
 	my $author = '';
 	my $authorsignoff = 0;
+	my $author_sob = '';
 	my $is_patch = 0;
 	my $is_binding_patch = -1;
 	my $in_header_lines = $file ? 0 : 1;
 	my $in_commit_log = 0;		#Scanning lines before patch
+	my $has_patch_separator = 0;	#Found a --- line
 	my $has_commit_log = 0;		#Encountered lines before patch
 	my $commit_log_lines = 0;	#Number of commit log lines
 	my $commit_log_possible_stack_dump = 0;
@@ -2348,7 +2439,7 @@
 
 		if ($rawline=~/^\+\+\+\s+(\S+)/) {
 			$setup_docs = 0;
-			if ($1 =~ m@Documentation/admin-guide/kernel-parameters.rst$@) {
+			if ($1 =~ m@Documentation/admin-guide/kernel-parameters.txt$@) {
 				$setup_docs = 1;
 			}
 			#next;
@@ -2429,6 +2520,7 @@
 		$sline =~ s/$;/ /g;	#with comments as spaces
 
 		my $rawline = $rawlines[$linenr - 1];
+		my $raw_comment = get_raw_comment($line, $rawline);
 
 # check if it's a mode change, rename or start of a patch
 		if (!$in_commit_log &&
@@ -2547,7 +2639,7 @@
 				if (($last_binding_patch != -1) &&
 				    ($last_binding_patch ^ $is_binding_patch)) {
 					WARN("DT_SPLIT_BINDING_PATCH",
-					     "DT binding docs and includes should be a separate patch. See: Documentation/devicetree/bindings/submitting-patches.txt\n");
+					     "DT binding docs and includes should be a separate patch. See: Documentation/devicetree/bindings/submitting-patches.rst\n");
 				}
 			}
 
@@ -2598,23 +2690,60 @@
 # Check the patch for a From:
 		if (decode("MIME-Header", $line) =~ /^From:\s*(.*)/) {
 			$author = $1;
+			my $curline = $linenr;
+			while(defined($rawlines[$curline]) && ($rawlines[$curline++] =~ /^[ \t]\s*(.*)/)) {
+				$author .= $1;
+			}
 			$author = encode("utf8", $author) if ($line =~ /=\?utf-8\?/i);
 			$author =~ s/"//g;
+			$author = reformat_email($author);
 		}
 
 # Check the patch for a signoff:
-		if ($line =~ /^\s*signed-off-by:/i) {
+		if ($line =~ /^\s*signed-off-by:\s*(.*)/i) {
 			$signoff++;
 			$in_commit_log = 0;
-			if ($author ne '') {
-				my $l = $line;
-				$l =~ s/"//g;
-				if ($l =~ /^\s*signed-off-by:\s*\Q$author\E/i) {
-				    $authorsignoff = 1;
+			if ($author ne ''  && $authorsignoff != 1) {
+				if (same_email_addresses($1, $author, 1)) {
+					$authorsignoff = 1;
+				} else {
+					my $ctx = $1;
+					my ($email_name, $email_comment, $email_address, $comment1) = parse_email($ctx);
+					my ($author_name, $author_comment, $author_address, $comment2) = parse_email($author);
+
+					if ($email_address eq $author_address && $email_name eq $author_name) {
+						$author_sob = $ctx;
+						$authorsignoff = 2;
+					} elsif ($email_address eq $author_address) {
+						$author_sob = $ctx;
+						$authorsignoff = 3;
+					} elsif ($email_name eq $author_name) {
+						$author_sob = $ctx;
+						$authorsignoff = 4;
+
+						my $address1 = $email_address;
+						my $address2 = $author_address;
+
+						if ($address1 =~ /(\S+)\+\S+(\@.*)/) {
+							$address1 = "$1$2";
+						}
+						if ($address2 =~ /(\S+)\+\S+(\@.*)/) {
+							$address2 = "$1$2";
+						}
+						if ($address1 eq $address2) {
+							$authorsignoff = 5;
+						}
+					}
 				}
 			}
 		}
 
+# Check for patch separator
+		if ($line =~ /^---$/) {
+			$has_patch_separator = 1;
+			$in_commit_log = 0;
+		}
+
 # Check if MAINTAINERS is being updated.  If so, there's probably no need to
 # emit the "does MAINTAINERS need updating?" message on file add/move/delete
 		if ($line =~ /^\s*MAINTAINERS\s*\|/) {
@@ -2660,8 +2789,8 @@
 				}
 			}
 
-			my ($email_name, $email_address, $comment) = parse_email($email);
-			my $suggested_email = format_email(($email_name, $email_address));
+			my ($email_name, $name_comment, $email_address, $comment) = parse_email($email);
+			my $suggested_email = format_email(($email_name, $name_comment, $email_address, $comment));
 			if ($suggested_email eq "") {
 				ERROR("BAD_SIGN_OFF",
 				      "Unrecognized email address: '$email'\n" . $herecurr);
@@ -2671,11 +2800,9 @@
 				$dequoted =~ s/" </ </;
 				# Don't force email to have quotes
 				# Allow just an angle bracketed address
-				if ("$dequoted$comment" ne $email &&
-				    "<$email_address>$comment" ne $email &&
-				    "$suggested_email$comment" ne $email) {
+				if (!same_email_addresses($email, $suggested_email, 0)) {
 					WARN("BAD_SIGN_OFF",
-					     "email address '$email' might be better as '$suggested_email$comment'\n" . $herecurr);
+					     "email address '$email' might be better as '$suggested_email'\n" . $herecurr);
 				}
 			}
 
@@ -2716,10 +2843,10 @@
 			     "A patch subject line should describe the change not the tool that found it\n" . $herecurr);
 		}
 
-# Check for unwanted Gerrit info
-		if ($in_commit_log && $line =~ /^\s*change-id:/i) {
+# Check for Gerrit Change-Ids not in any patch context
+		if ($realfile eq '' && !$has_patch_separator && $line =~ /^\s*change-id:/i) {
 			ERROR("GERRIT_CHANGE_ID",
-			      "Remove Gerrit Change-Id's before submitting upstream.\n" . $herecurr);
+			      "Remove Gerrit Change-Id's before submitting upstream\n" . $herecurr);
 		}
 
 # Check if the commit log is in a possible stack dump
@@ -2757,7 +2884,7 @@
 
 # Check for git id commit length and improperly formed commit descriptions
 		if ($in_commit_log && !$commit_log_possible_stack_dump &&
-		    $line !~ /^\s*(?:Link|Patchwork|http|https|BugLink):/i &&
+		    $line !~ /^\s*(?:Link|Patchwork|http|https|BugLink|base-commit):/i &&
 		    $line !~ /^This reverts commit [0-9a-f]{7,40}/ &&
 		    ($line =~ /\bcommit\s+[0-9a-f]{5,}\b/i ||
 		     ($line =~ /(?:\s|^)[0-9a-f]{12,40}(?:[\s"'\(\[]|$)/i &&
@@ -2826,6 +2953,14 @@
 			     "added, moved or deleted file(s), does MAINTAINERS need updating?\n" . $herecurr);
 		}
 
+# Check for adding new DT bindings not in schema format
+		if (!$in_commit_log &&
+		    ($line =~ /^new file mode\s*\d+\s*$/) &&
+		    ($realfile =~ m@^Documentation/devicetree/bindings/.*\.txt$@)) {
+			WARN("DT_SCHEMA_BINDING_PATCH",
+			     "DT bindings should be in DT schema format. See: Documentation/devicetree/writing-schema.rst\n");
+		}
+
 # Check for wrappage within a valid hunk of the file
 		if ($realcnt != 0 && $line !~ m{^(?:\+|-| |\\ No newline|$)}) {
 			ERROR("CORRUPTED_PATCH",
@@ -2913,6 +3048,42 @@
 			}
 		}
 
+# check for repeated words separated by a single space
+		if ($rawline =~ /^\+/ || $in_commit_log) {
+			while ($rawline =~ /\b($word_pattern) (?=($word_pattern))/g) {
+
+				my $first = $1;
+				my $second = $2;
+
+				if ($first =~ /(?:struct|union|enum)/) {
+					pos($rawline) += length($first) + length($second) + 1;
+					next;
+				}
+
+				next if ($first ne $second);
+				next if ($first eq 'long');
+
+				if (WARN("REPEATED_WORD",
+					 "Possible repeated word: '$first'\n" . $herecurr) &&
+				    $fix) {
+					$fixed[$fixlinenr] =~ s/\b$first $second\b/$first/;
+				}
+			}
+
+			# if it's a repeated word on consecutive lines in a comment block
+			if ($prevline =~ /$;+\s*$/ &&
+			    $prevrawline =~ /($word_pattern)\s*$/) {
+				my $last_word = $1;
+				if ($rawline =~ /^\+\s*\*\s*$last_word /) {
+					if (WARN("REPEATED_WORD",
+						 "Possible repeated word: '$last_word'\n" . $hereprev) &&
+					    $fix) {
+						$fixed[$fixlinenr] =~ s/(\+\s*\*\s*)$last_word /$1/;
+					}
+				}
+			}
+		}
+
 # ignore non-hunk lines and lines being removed
 		next if (!$hunk_line || $line =~ /^-/);
 
@@ -2971,11 +3142,7 @@
 
 				if ($lines[$ln - 1] =~ /^\+\s*(?:bool|tristate|prompt)\s*["']/) {
 					$is_start = 1;
-				} elsif ($lines[$ln - 1] =~ /^\+\s*(?:help|---help---)\s*$/) {
-					if ($lines[$ln - 1] =~ "---help---") {
-						WARN("CONFIG_DESCRIPTION",
-						     "prefer 'help' over '---help---' for new help texts\n" . $herecurr);
-					}
+				} elsif ($lines[$ln - 1] =~ /^\+\s*(?:---)?help(?:---)?$/) {
 					$length = -1;
 				}
 
@@ -3002,14 +3169,43 @@
 			#print "is_start<$is_start> is_end<$is_end> length<$length>\n";
 		}
 
-# check for MAINTAINERS entries that don't have the right form
-		if ($realfile =~ /^MAINTAINERS$/ &&
-		    $rawline =~ /^\+[A-Z]:/ &&
-		    $rawline !~ /^\+[A-Z]:\t\S/) {
-			if (WARN("MAINTAINERS_STYLE",
-				 "MAINTAINERS entries use one tab after TYPE:\n" . $herecurr) &&
-			    $fix) {
-				$fixed[$fixlinenr] =~ s/^(\+[A-Z]):\s*/$1:\t/;
+# check MAINTAINERS entries
+		if ($realfile =~ /^MAINTAINERS$/) {
+# check MAINTAINERS entries for the right form
+			if ($rawline =~ /^\+[A-Z]:/ &&
+			    $rawline !~ /^\+[A-Z]:\t\S/) {
+				if (WARN("MAINTAINERS_STYLE",
+					 "MAINTAINERS entries use one tab after TYPE:\n" . $herecurr) &&
+				    $fix) {
+					$fixed[$fixlinenr] =~ s/^(\+[A-Z]):\s*/$1:\t/;
+				}
+			}
+# check MAINTAINERS entries for the right ordering too
+			my $preferred_order = 'MRLSWQBCPTFXNK';
+			if ($rawline =~ /^\+[A-Z]:/ &&
+			    $prevrawline =~ /^[\+ ][A-Z]:/) {
+				$rawline =~ /^\+([A-Z]):\s*(.*)/;
+				my $cur = $1;
+				my $curval = $2;
+				$prevrawline =~ /^[\+ ]([A-Z]):\s*(.*)/;
+				my $prev = $1;
+				my $prevval = $2;
+				my $curindex = index($preferred_order, $cur);
+				my $previndex = index($preferred_order, $prev);
+				if ($curindex < 0) {
+					WARN("MAINTAINERS_STYLE",
+					     "Unknown MAINTAINERS entry type: '$cur'\n" . $herecurr);
+				} else {
+					if ($previndex >= 0 && $curindex < $previndex) {
+						WARN("MAINTAINERS_STYLE",
+						     "Misordered MAINTAINERS entry - list '$cur:' before '$prev:'\n" . $hereprev);
+					} elsif ((($prev eq 'F' && $cur eq 'F') ||
+						  ($prev eq 'X' && $cur eq 'X')) &&
+						 ($prevval cmp $curval) > 0) {
+						WARN("MAINTAINERS_STYLE",
+						     "Misordered MAINTAINERS entry - list file patterns in alphabetic order\n" . $hereprev);
+					}
+				}
 			}
 		}
 
@@ -3075,7 +3271,7 @@
 					$comment = '/*';
 				} elsif ($realfile =~ /\.(c|dts|dtsi)$/) {
 					$comment = '//';
-				} elsif (($checklicenseline == 2) || $realfile =~ /\.(sh|pl|py|awk|tc)$/) {
+				} elsif (($checklicenseline == 2) || $realfile =~ /\.(sh|pl|py|awk|tc|yaml)$/) {
 					$comment = '#';
 				} elsif ($realfile =~ /\.rst$/) {
 					$comment = '..';
@@ -3099,10 +3295,27 @@
 						WARN("SPDX_LICENSE_TAG",
 						     "'$spdx_license' is not supported in LICENSES/...\n" . $herecurr);
 					}
+					if ($realfile =~ m@^Documentation/devicetree/bindings/@ &&
+					    not $spdx_license =~ /GPL-2\.0.*BSD-2-Clause/) {
+						my $msg_level = \&WARN;
+						$msg_level = \&CHK if ($file);
+						if (&{$msg_level}("SPDX_LICENSE_TAG",
+
+								  "DT binding documents should be licensed (GPL-2.0-only OR BSD-2-Clause)\n" . $herecurr) &&
+						    $fix) {
+							$fixed[$fixlinenr] =~ s/SPDX-License-Identifier: .*/SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)/;
+						}
+					}
 				}
 			}
 		}
 
+# check for embedded filenames
+		if ($rawline =~ /^\+.*\Q$realfile\E/) {
+			WARN("EMBEDDED_FILENAME",
+			     "It's generally not useful to have the filename in the file\n" . $herecurr);
+		}
+
 # check we are in a valid source file if not then ignore this hunk
 		next if ($realfile !~ /\.(h|c|s|S|sh|dtsi|dts)$/);
 
@@ -3171,8 +3384,10 @@
 
 			if ($msg_type ne "" &&
 			    (show_type("LONG_LINE") || show_type($msg_type))) {
-				WARN($msg_type,
-				     "line over $max_line_length characters\n" . $herecurr);
+				my $msg_level = \&WARN;
+				$msg_level = \&CHK if ($file);
+				&{$msg_level}($msg_type,
+					      "line length of $length exceeds $max_line_length columns\n" . $herecurr);
 			}
 		}
 
@@ -3186,7 +3401,7 @@
 		next if ($realfile !~ /\.(h|c|pl|dtsi|dts)$/);
 
 # at the beginning of a line any tabs must come first and anything
-# more than 8 must use tabs.
+# more than $tabsize must use tabs.
 		if ($rawline =~ /^\+\s* \t\s*\S/ ||
 		    $rawline =~ /^\+\s*        \s*/) {
 			my $herevet = "$here\n" . cat_vet($rawline) . "\n";
@@ -3205,7 +3420,7 @@
 				"please, no space before tabs\n" . $herevet) &&
 			    $fix) {
 				while ($fixed[$fixlinenr] =~
-					   s/(^\+.*) {8,8}\t/$1\t\t/) {}
+					   s/(^\+.*) {$tabsize,$tabsize}\t/$1\t\t/) {}
 				while ($fixed[$fixlinenr] =~
 					   s/(^\+.*) +\t/$1\t/) {}
 			}
@@ -3227,11 +3442,11 @@
 		if ($perl_version_ok &&
 		    $sline =~ /^\+\t+( +)(?:$c90_Keywords\b|\{\s*$|\}\s*(?:else\b|while\b|\s*$)|$Declare\s*$Ident\s*[;=])/) {
 			my $indent = length($1);
-			if ($indent % 8) {
+			if ($indent % $tabsize) {
 				if (WARN("TABSTOP",
 					 "Statements should start on a tabstop\n" . $herecurr) &&
 				    $fix) {
-					$fixed[$fixlinenr] =~ s@(^\+\t+) +@$1 . "\t" x ($indent/8)@e;
+					$fixed[$fixlinenr] =~ s@(^\+\t+) +@$1 . "\t" x ($indent/$tabsize)@e;
 				}
 			}
 		}
@@ -3249,8 +3464,8 @@
 				my $newindent = $2;
 
 				my $goodtabindent = $oldindent .
-					"\t" x ($pos / 8) .
-					" "  x ($pos % 8);
+					"\t" x ($pos / $tabsize) .
+					" "  x ($pos % $tabsize);
 				my $goodspaceindent = $oldindent . " "  x $pos;
 
 				if ($newindent ne $goodtabindent &&
@@ -3288,7 +3503,7 @@
 		if ($realfile =~ m@^(drivers/net/|net/)@ &&
 		    $prevrawline =~ /^\+[ \t]*\/\*[ \t]*$/ &&
 		    $rawline =~ /^\+[ \t]*\*/ &&
-		    $realline > 2) {
+		    $realline > 3) { # Do not warn about the initial copyright comment block after SPDX-License-Identifier
 			WARN("NETWORKING_BLOCK_COMMENT_STYLE",
 			     "networking block comments don't use an empty /* line, use /* Comment...\n" . $hereprev);
 		}
@@ -3721,11 +3936,11 @@
 			#print "line<$line> prevline<$prevline> indent<$indent> sindent<$sindent> check<$check> continuation<$continuation> s<$s> cond_lines<$cond_lines> stat_real<$stat_real> stat<$stat>\n";
 
 			if ($check && $s ne '' &&
-			    (($sindent % 8) != 0 ||
+			    (($sindent % $tabsize) != 0 ||
 			     ($sindent < $indent) ||
 			     ($sindent == $indent &&
 			      ($s !~ /^\s*(?:\}|\{|else\b)/)) ||
-			     ($sindent > $indent + 8))) {
+			     ($sindent > $indent + $tabsize))) {
 				WARN("SUSPECT_CODE_INDENT",
 				     "suspect code indent for conditional statements ($indent, $sindent)\n" . $herecurr . "$stat_real\n");
 			}
@@ -3747,6 +3962,17 @@
 #ignore lines not being added
 		next if ($line =~ /^[^\+]/);
 
+# check for self assignments used to avoid compiler warnings
+# e.g.:	int foo = foo, *bar = NULL;
+#	struct foo bar = *(&(bar));
+		if ($line =~ /^\+\s*(?:$Declare)?([A-Za-z_][A-Za-z\d_]*)\s*=/) {
+			my $var = $1;
+			if ($line =~ /^\+\s*(?:$Declare)?$var\s*=\s*(?:$var|\*\s*\(?\s*&\s*\(?\s*$var\s*\)?\s*\)?)\s*[;,]/) {
+				WARN("SELF_ASSIGNMENT",
+				     "Do not use self-assignments to avoid compiler warnings\n" . $herecurr);
+			}
+		}
+
 # check for dereferences that span multiple lines
 		if ($prevline =~ /^\+.*$Lval\s*(?:\.|->)\s*$/ &&
 		    $line =~ /^\+\s*(?!\#\s*(?!define\s+|if))\s*$Lval/) {
@@ -4002,7 +4228,7 @@
 		}
 
 # check for function declarations without arguments like "int foo()"
-		if ($line =~ /(\b$Type\s+$Ident)\s*\(\s*\)/) {
+		if ($line =~ /(\b$Type\s*$Ident)\s*\(\s*\)/) {
 			if (ERROR("FUNCTION_WITHOUT_ARGS",
 				  "Bad function definition - $1() should probably be $1(void)\n" . $herecurr) &&
 			    $fix) {
@@ -4113,15 +4339,6 @@
 			     "Prefer [subsystem eg: netdev]_$level2([subsystem]dev, ... then dev_$level2(dev, ... then pr_$level(...  to printk(KERN_$orig ...\n" . $herecurr);
 		}
 
-		if ($line =~ /\bpr_warning\s*\(/) {
-			if (WARN("PREFER_PR_LEVEL",
-				 "Prefer pr_warn(... to pr_warning(...\n" . $herecurr) &&
-			    $fix) {
-				$fixed[$fixlinenr] =~
-				    s/\bpr_warning\b/pr_warn/;
-			}
-		}
-
 		if ($line =~ /\bdev_printk\s*\(\s*KERN_([A-Z]+)/) {
 			my $orig = $1;
 			my $level = lc($orig);
@@ -4131,6 +4348,12 @@
 			     "Prefer dev_$level(... to dev_printk(KERN_$orig, ...\n" . $herecurr);
 		}
 
+# trace_printk should not be used in production code.
+		if ($line =~ /\b(trace_printk|trace_puts|ftrace_vprintk)\s*\(/) {
+			WARN("TRACE_PRINTK",
+			     "Do not use $1() in production code (this can be ignored if built only with a debug config option)\n" . $herecurr);
+		}
+
 # ENOSYS means "bad syscall nr" and nothing else.  This will have a small
 # number of false positives, but assembly files are not checked, so at
 # least the arch entry code will not trigger this warning.
@@ -4139,6 +4362,17 @@
 			     "ENOSYS means 'invalid syscall nr' and nothing else\n" . $herecurr);
 		}
 
+# ENOTSUPP is not a standard error code and should be avoided in new patches.
+# Folks usually mean EOPNOTSUPP (also called ENOTSUP), when they type ENOTSUPP.
+# Similarly to ENOSYS warning a small number of false positives is expected.
+		if (!$file && $line =~ /\bENOTSUPP\b/) {
+			if (WARN("ENOTSUPP",
+				 "ENOTSUPP is not a SUSV4 error code, prefer EOPNOTSUPP\n" . $herecurr) &&
+			    $fix) {
+				$fixed[$fixlinenr] =~ s/\bENOTSUPP\b/EOPNOTSUPP/;
+			}
+		}
+
 # function brace can't be on same line, except for #defines of do while,
 # or if closed on same line
 		if ($perl_version_ok &&
@@ -4579,7 +4813,7 @@
 					    ($op eq '>' &&
 					     $ca =~ /<\S+\@\S+$/))
 					{
-					    	$ok = 1;
+						$ok = 1;
 					}
 
 					# for asm volatile statements
@@ -4786,6 +5020,17 @@
 			}
 		}
 
+# check if a statement with a comma should be two statements like:
+#	foo = bar(),	/* comma should be semicolon */
+#	bar = baz();
+		if (defined($stat) &&
+		    $stat =~ /^\+\s*(?:$Lval\s*$Assignment\s*)?$FuncArg\s*,\s*(?:$Lval\s*$Assignment\s*)?$FuncArg\s*;\s*$/) {
+			my $cnt = statement_rawlines($stat);
+			my $herectx = get_stat_here($linenr, $cnt, $here);
+			WARN("SUSPECT_COMMA_SEMICOLON",
+			     "Possible comma where semicolon could be used\n" . $herectx);
+		}
+
 # return is not a function
 		if (defined($stat) && $stat =~ /^.\s*return(\s*)\(/s) {
 			my $spacing = $1;
@@ -4906,15 +5151,37 @@
 			my ($s, $c) = ($stat, $cond);
 
 			if ($c =~ /\bif\s*\(.*[^<>!=]=[^=].*/s) {
-				ERROR("ASSIGN_IN_IF",
-				      "do not use assignment in if condition\n" . $herecurr);
+				if (ERROR("ASSIGN_IN_IF",
+					  "do not use assignment in if condition\n" . $herecurr) &&
+				    $fix && $perl_version_ok) {
+					if ($rawline =~ /^\+(\s+)if\s*\(\s*(\!)?\s*\(\s*(($Lval)\s*=\s*$LvalOrFunc)\s*\)\s*(?:($Compare)\s*($FuncArg))?\s*\)\s*(\{)?\s*$/) {
+						my $space = $1;
+						my $not = $2;
+						my $statement = $3;
+						my $assigned = $4;
+						my $test = $8;
+						my $against = $9;
+						my $brace = $15;
+						fix_delete_line($fixlinenr, $rawline);
+						fix_insert_line($fixlinenr, "$space$statement;");
+						my $newline = "${space}if (";
+						$newline .= '!' if defined($not);
+						$newline .= '(' if (defined $not && defined($test) && defined($against));
+						$newline .= "$assigned";
+						$newline .= " $test $against" if (defined($test) && defined($against));
+						$newline .= ')' if (defined $not && defined($test) && defined($against));
+						$newline .= ')';
+						$newline .= " {" if (defined($brace));
+						fix_insert_line($fixlinenr + 1, $newline);
+					}
+				}
 			}
 
 			# Find out what is on the end of the line after the
 			# conditional.
 			substr($s, 0, length($c), '');
 			$s =~ s/\n.*//g;
-			$s =~ s/$;//g; 	# Remove any comments
+			$s =~ s/$;//g;	# Remove any comments
 			if (length($c) && $s !~ /^\s*{?\s*\\*\s*$/ &&
 			    $c !~ /}\s*while\s*/)
 			{
@@ -4953,7 +5220,7 @@
 # if and else should not have general statements after it
 		if ($line =~ /^.\s*(?:}\s*)?else\b(.*)/) {
 			my $s = $1;
-			$s =~ s/$;//g; 	# Remove any comments
+			$s =~ s/$;//g;	# Remove any comments
 			if ($s !~ /^\s*(?:\sif|(?:{|)\s*\\?\s*$)/) {
 				ERROR("TRAILING_STATEMENTS",
 				      "trailing statements should be on next line\n" . $herecurr);
@@ -5030,8 +5297,9 @@
 			    $var =~ /[A-Z][a-z]|[a-z][A-Z]/ &&
 #Ignore Page<foo> variants
 			    $var !~ /^(?:Clear|Set|TestClear|TestSet|)Page[A-Z]/ &&
-#Ignore SI style variants like nS, mV and dB (ie: max_uV, regulator_min_uA_show)
-			    $var !~ /^(?:[a-z_]*?)_?[a-z][A-Z](?:_[a-z_]+)?$/ &&
+#Ignore SI style variants like nS, mV and dB
+#(ie: max_uV, regulator_min_uA_show, RANGE_mA_VALUE)
+			    $var !~ /^(?:[a-z0-9_]*|[A-Z0-9_]*)?_?[a-z][A-Z](?:_[a-z0-9_]+|_[A-Z0-9_]+)?$/ &&
 #Ignore some three character SI units explicitly, like MiB and KHz
 			    $var !~ /^(?:[a-z_]*?)_?(?:[KMGT]iB|[KMGT]?Hz)(?:_[a-z_]+)?$/) {
 				while ($var =~ m{($Ident)}g) {
@@ -5122,13 +5390,13 @@
 			$dstat =~ s/\s*$//s;
 
 			# Flatten any parentheses and braces
-			while ($dstat =~ s/\([^\(\)]*\)/1/ ||
-			       $dstat =~ s/\{[^\{\}]*\}/1/ ||
-			       $dstat =~ s/.\[[^\[\]]*\]/1/)
+			while ($dstat =~ s/\([^\(\)]*\)/1u/ ||
+			       $dstat =~ s/\{[^\{\}]*\}/1u/ ||
+			       $dstat =~ s/.\[[^\[\]]*\]/1u/)
 			{
 			}
 
-			# Flatten any obvious string concatentation.
+			# Flatten any obvious string concatenation.
 			while ($dstat =~ s/($String)\s*$Ident/$1/ ||
 			       $dstat =~ s/$Ident\s*($String)/$1/)
 			{
@@ -5165,6 +5433,7 @@
 			    $dstat !~ /^\.$Ident\s*=/ &&				# .foo =
 			    $dstat !~ /^(?:\#\s*$Ident|\#\s*$Constant)\s*$/ &&		# stringification #foo
 			    $dstat !~ /^do\s*$Constant\s*while\s*$Constant;?$/ &&	# do {...} while (...); // do {...} while (...)
+			    $dstat !~ /^while\s*$Constant\s*$Constant\s*$/ &&		# while (...) {...}
 			    $dstat !~ /^for\s*$Constant$/ &&				# for (...)
 			    $dstat !~ /^for\s*$Constant\s+(?:$Ident|-?$Constant)$/ &&	# for (...) bar()
 			    $dstat !~ /^do\s*{/ &&					# do {...
@@ -5787,8 +6056,7 @@
 		my $barriers = qr{
 			mb|
 			rmb|
-			wmb|
-			read_barrier_depends
+			wmb
 		}x;
 		my $barrier_stems = qr{
 			mb__before_atomic|
@@ -5829,10 +6097,12 @@
 			}
 		}
 
-# check for smp_read_barrier_depends and read_barrier_depends
-		if (!$file && $line =~ /\b(smp_|)read_barrier_depends\s*\(/) {
-			WARN("READ_BARRIER_DEPENDS",
-			     "$1read_barrier_depends should only be used in READ_ONCE or DEC Alpha code\n" . $herecurr);
+# check for data_race without a comment.
+		if ($line =~ /\bdata_race\s*\(/) {
+			if (!ctx_has_comment($first_line, $linenr)) {
+				WARN("DATA_RACE",
+				     "data_race without comment\n" . $herecurr);
+			}
 		}
 
 # check of hardware specific defines
@@ -6015,14 +6285,18 @@
 		        for (my $count = $linenr; $count <= $lc; $count++) {
 				my $specifier;
 				my $extension;
+				my $qualifier;
 				my $bad_specifier = "";
 				my $fmt = get_quoted_string($lines[$count - 1], raw_line($count, 0));
 				$fmt =~ s/%%//g;
 
-				while ($fmt =~ /(\%[\*\d\.]*p(\w))/g) {
+				while ($fmt =~ /(\%[\*\d\.]*p(\w)(\w*))/g) {
 					$specifier = $1;
 					$extension = $2;
-					if ($extension !~ /[SsBKRraEhMmIiUDdgVCbGNOxt]/) {
+					$qualifier = $3;
+					if ($extension !~ /[SsBKRraEehMmIiUDdgVCbGNOxtf]/ ||
+					    ($extension eq "f" &&
+					     defined $qualifier && $qualifier !~ /^w/)) {
 						$bad_specifier = $specifier;
 						last;
 					}
@@ -6039,7 +6313,6 @@
 					my $ext_type = "Invalid";
 					my $use = "";
 					if ($bad_specifier =~ /p[Ff]/) {
-						$ext_type = "Deprecated";
 						$use = " - use %pS instead";
 						$use =~ s/pS/ps/ if ($bad_specifier =~ /pf/);
 					}
@@ -6203,8 +6476,7 @@
 			if (defined $cond) {
 				substr($s, 0, length($cond), '');
 			}
-			if ($s =~ /^\s*;/ &&
-			    $function_name ne 'uninitialized_var')
+			if ($s =~ /^\s*;/)
 			{
 				WARN("AVOID_EXTERNS",
 				     "externs should be avoided in .c files\n" .  $herecurr);
@@ -6265,7 +6537,7 @@
 
 			if (!grep(/$name/, @setup_docs)) {
 				CHK("UNDOCUMENTED_SETUP",
-				    "__setup appears un-documented -- check Documentation/admin-guide/kernel-parameters.rst\n" . $herecurr);
+				    "__setup appears un-documented -- check Documentation/admin-guide/kernel-parameters.txt\n" . $herecurr);
 			}
 		}
 
@@ -6347,38 +6619,41 @@
 			}
 		}
 
+# check for IS_ENABLED() without CONFIG_<FOO> ($rawline for comments too)
+		if ($rawline =~ /\bIS_ENABLED\s*\(\s*(\w+)\s*\)/ && $1 !~ /^${CONFIG_}/) {
+			WARN("IS_ENABLED_CONFIG",
+			     "IS_ENABLED($1) is normally used as IS_ENABLED(${CONFIG_}$1)\n" . $herecurr);
+		}
+
 # check for #if defined CONFIG_<FOO> || defined CONFIG_<FOO>_MODULE
-		if ($line =~ /^\+\s*#\s*if\s+defined(?:\s*\(?\s*|\s+)(CONFIG_[A-Z_]+)\s*\)?\s*\|\|\s*defined(?:\s*\(?\s*|\s+)\1_MODULE\s*\)?\s*$/) {
+		if ($line =~ /^\+\s*#\s*if\s+defined(?:\s*\(?\s*|\s+)(${CONFIG_}[A-Z_]+)\s*\)?\s*\|\|\s*defined(?:\s*\(?\s*|\s+)\1_MODULE\s*\)?\s*$/) {
 			my $config = $1;
 			if (WARN("PREFER_IS_ENABLED",
-				 "Prefer IS_ENABLED(<FOO>) to CONFIG_<FOO> || CONFIG_<FOO>_MODULE\n" . $herecurr) &&
+				 "Prefer IS_ENABLED(<FOO>) to ${CONFIG_}<FOO> || ${CONFIG_}<FOO>_MODULE\n" . $herecurr) &&
 			    $fix) {
 				$fixed[$fixlinenr] = "\+#if IS_ENABLED($config)";
 			}
 		}
 
-# check for case / default statements not preceded by break/fallthrough/switch
-		if ($line =~ /^.\s*(?:case\s+(?:$Ident|$Constant)\s*|default):/) {
-			my $has_break = 0;
-			my $has_statement = 0;
-			my $count = 0;
-			my $prevline = $linenr;
-			while ($prevline > 1 && ($file || $count < 3) && !$has_break) {
-				$prevline--;
-				my $rline = $rawlines[$prevline - 1];
-				my $fline = $lines[$prevline - 1];
-				last if ($fline =~ /^\@\@/);
-				next if ($fline =~ /^\-/);
-				next if ($fline =~ /^.(?:\s*(?:case\s+(?:$Ident|$Constant)[\s$;]*|default):[\s$;]*)*$/);
-				$has_break = 1 if ($rline =~ /fall[\s_-]*(through|thru)/i);
-				next if ($fline =~ /^.[\s$;]*$/);
-				$has_statement = 1;
-				$count++;
-				$has_break = 1 if ($fline =~ /\bswitch\b|\b(?:break\s*;[\s$;]*$|exit\s*\(\b|return\b|goto\b|continue\b)/);
-			}
-			if (!$has_break && $has_statement) {
-				WARN("MISSING_BREAK",
-				     "Possible switch case/default not preceded by break or fallthrough comment\n" . $herecurr);
+# check for /* fallthrough */ like comment, prefer fallthrough;
+		my @fallthroughs = (
+			'fallthrough',
+			'@fallthrough@',
+			'lint -fallthrough[ \t]*',
+			'intentional(?:ly)?[ \t]*fall(?:(?:s | |-)[Tt]|t)hr(?:ough|u|ew)',
+			'(?:else,?\s*)?FALL(?:S | |-)?THR(?:OUGH|U|EW)[ \t.!]*(?:-[^\n\r]*)?',
+			'Fall(?:(?:s | |-)[Tt]|t)hr(?:ough|u|ew)[ \t.!]*(?:-[^\n\r]*)?',
+			'fall(?:s | |-)?thr(?:ough|u|ew)[ \t.!]*(?:-[^\n\r]*)?',
+		    );
+		if ($raw_comment ne '') {
+			foreach my $ft (@fallthroughs) {
+				if ($raw_comment =~ /$ft/) {
+					my $msg_level = \&WARN;
+					$msg_level = \&CHK if ($file);
+					&{$msg_level}("PREFER_FALLTHROUGH",
+						      "Prefer 'fallthrough;' over fallthrough comment\n" . $herecurr);
+					last;
+				}
 			}
 		}
 
@@ -6475,7 +6750,8 @@
 
 # check for various structs that are normally const (ops, kgdb, device_tree)
 # and avoid what seem like struct definitions 'struct foo {'
-		if ($line !~ /\bconst\b/ &&
+		if (defined($const_structs) &&
+		    $line !~ /\bconst\b/ &&
 		    $line =~ /\bstruct\s+($const_structs)\b(?!\s*\{)/) {
 			WARN("CONST_STRUCT",
 			     "struct $1 should normally be const\n" . $herecurr);
@@ -6706,9 +6982,33 @@
 		if ($signoff == 0) {
 			ERROR("MISSING_SIGN_OFF",
 			      "Missing Signed-off-by: line(s)\n");
-		} elsif (!$authorsignoff) {
-			WARN("NO_AUTHOR_SIGN_OFF",
-			     "Missing Signed-off-by: line by nominal patch author '$author'\n");
+		} elsif ($authorsignoff != 1) {
+			# authorsignoff values:
+			# 0 -> missing sign off
+			# 1 -> sign off identical
+			# 2 -> names and addresses match, comments mismatch
+			# 3 -> addresses match, names different
+			# 4 -> names match, addresses different
+			# 5 -> names match, addresses excluding subaddress details (refer RFC 5233) match
+
+			my $sob_msg = "'From: $author' != 'Signed-off-by: $author_sob'";
+
+			if ($authorsignoff == 0) {
+				ERROR("NO_AUTHOR_SIGN_OFF",
+				      "Missing Signed-off-by: line by nominal patch author '$author'\n");
+			} elsif ($authorsignoff == 2) {
+				CHK("FROM_SIGN_OFF_MISMATCH",
+				    "From:/Signed-off-by: email comments mismatch: $sob_msg\n");
+			} elsif ($authorsignoff == 3) {
+				WARN("FROM_SIGN_OFF_MISMATCH",
+				     "From:/Signed-off-by: email name mismatch: $sob_msg\n");
+			} elsif ($authorsignoff == 4) {
+				WARN("FROM_SIGN_OFF_MISMATCH",
+				     "From:/Signed-off-by: email address mismatch: $sob_msg\n");
+			} elsif ($authorsignoff == 5) {
+				WARN("FROM_SIGN_OFF_MISMATCH",
+				     "From:/Signed-off-by: email subaddress mismatch: $sob_msg\n");
+			}
 		}
 	}
 
diff --git a/scripts/checkstack.pl b/scripts/checkstack.pl
index 371bd17..d2c3858 100755
--- a/scripts/checkstack.pl
+++ b/scripts/checkstack.pl
@@ -34,8 +34,10 @@
 # $& (whole re) matches the complete objdump line with the stack growth
 # $1 (first bracket) matches the dynamic amount of the stack growth
 #
+# $sub: subroutine for special handling to check stack usage.
+#
 # use anything else and feel the pain ;)
-my (@stack, $re, $dre, $x, $xs, $funcre);
+my (@stack, $re, $dre, $sub, $x, $xs, $funcre, $min_stack);
 {
 	my $arch = shift;
 	if ($arch eq "") {
@@ -43,6 +45,11 @@
 		chomp($arch);
 	}
 
+	$min_stack = shift;
+	if ($min_stack eq "" || $min_stack !~ /^\d+$/) {
+		$min_stack = 100;
+	}
+
 	$x	= "[0-9a-f]";	# hex character
 	$xs	= "[0-9a-f ]";	# hex character or space
 	$funcre = qr/^$x* <(.*)>:$/;
@@ -53,7 +60,8 @@
 		$dre = qr/^.*sub.*sp, sp, #(0x$x{1,8})/o;
 	} elsif ($arch eq 'arm') {
 		#c0008ffc:	e24dd064	sub	sp, sp, #100	; 0x64
-		$re = qr/.*sub.*sp, sp, #(([0-9]{2}|[3-9])[0-9]{2})/o;
+		$re = qr/.*sub.*sp, sp, #([0-9]{1,4})/o;
+		$sub = \&arm_push_handling;
 	} elsif ($arch =~ /^x86(_64)?$/ || $arch =~ /^i[3456]86$/) {
 		#c0105234:       81 ec ac 05 00 00       sub    $0x5ac,%esp
 		# or
@@ -107,13 +115,50 @@
 }
 
 #
+# To count stack usage of push {*, fp, ip, lr, pc} instruction in ARM,
+# if FRAME POINTER is enabled.
+# e.g. c01f0d48: e92ddff0 push {r4, r5, r6, r7, r8, r9, sl, fp, ip, lr, pc}
+#
+sub arm_push_handling {
+	my $regex = qr/.*push.*fp, ip, lr, pc}/o;
+	my $size = 0;
+	my $line_arg = shift;
+
+	if ($line_arg =~ m/$regex/) {
+		$size = $line_arg =~ tr/,//;
+		$size = ($size + 1) * 4;
+	}
+
+	return $size;
+}
+
+#
 # main()
 #
-my ($func, $file, $lastslash);
+my ($func, $file, $lastslash, $total_size, $addr, $intro);
+
+$total_size = 0;
 
 while (my $line = <STDIN>) {
 	if ($line =~ m/$funcre/) {
 		$func = $1;
+		next if $line !~ m/^($xs*)/;
+		if ($total_size > $min_stack) {
+			push @stack, "$intro$total_size\n";
+		}
+
+		$addr = $1;
+		$addr =~ s/ /0/g;
+		$addr = "0x$addr";
+
+		$intro = "$addr $func [$file]:";
+		my $padlen = 56 - length($intro);
+		while ($padlen > 0) {
+			$intro .= '	';
+			$padlen -= 8;
+		}
+
+		$total_size = 0;
 	}
 	elsif ($line =~ m/(.*):\s*file format/) {
 		$file = $1;
@@ -134,36 +179,22 @@
 		}
 		next if ($size > 0x10000000);
 
-		next if $line !~ m/^($xs*)/;
-		my $addr = $1;
-		$addr =~ s/ /0/g;
-		$addr = "0x$addr";
-
-		my $intro = "$addr $func [$file]:";
-		my $padlen = 56 - length($intro);
-		while ($padlen > 0) {
-			$intro .= '	';
-			$padlen -= 8;
-		}
-		next if ($size < 100);
-		push @stack, "$intro$size\n";
+		$total_size += $size;
 	}
 	elsif (defined $dre && $line =~ m/$dre/) {
-		my $size = "Dynamic ($1)";
+		my $size = $1;
 
-		next if $line !~ m/^($xs*)/;
-		my $addr = $1;
-		$addr =~ s/ /0/g;
-		$addr = "0x$addr";
-
-		my $intro = "$addr $func [$file]:";
-		my $padlen = 56 - length($intro);
-		while ($padlen > 0) {
-			$intro .= '	';
-			$padlen -= 8;
-		}
-		push @stack, "$intro$size\n";
+		$size = hex($size) if ($size =~ /^0x/);
+		$total_size += $size;
 	}
+	elsif (defined $sub) {
+		my $size = &$sub($line);
+
+		$total_size += $size;
+	}
+}
+if ($total_size > $min_stack) {
+	push @stack, "$intro$total_size\n";
 }
 
 # Sort output by size (last field)
diff --git a/scripts/clang-tools/gen_compile_commands.py b/scripts/clang-tools/gen_compile_commands.py
new file mode 100755
index 0000000..8bf55bb
--- /dev/null
+++ b/scripts/clang-tools/gen_compile_commands.py
@@ -0,0 +1,237 @@
+#!/usr/bin/env python3
+# SPDX-License-Identifier: GPL-2.0
+#
+# Copyright (C) Google LLC, 2018
+#
+# Author: Tom Roeder <tmroeder@google.com>
+#
+"""A tool for generating compile_commands.json in the Linux kernel."""
+
+import argparse
+import json
+import logging
+import os
+import re
+import subprocess
+import sys
+
+_DEFAULT_OUTPUT = 'compile_commands.json'
+_DEFAULT_LOG_LEVEL = 'WARNING'
+
+_FILENAME_PATTERN = r'^\..*\.cmd$'
+_LINE_PATTERN = r'^cmd_[^ ]*\.o := (.* )([^ ]*\.c)$'
+_VALID_LOG_LEVELS = ['DEBUG', 'INFO', 'WARNING', 'ERROR', 'CRITICAL']
+
+
+def parse_arguments():
+    """Sets up and parses command-line arguments.
+
+    Returns:
+        log_level: A logging level to filter log output.
+        directory: The work directory where the objects were built.
+        ar: Command used for parsing .a archives.
+        output: Where to write the compile-commands JSON file.
+        paths: The list of files/directories to handle to find .cmd files.
+    """
+    usage = 'Creates a compile_commands.json database from kernel .cmd files'
+    parser = argparse.ArgumentParser(description=usage)
+
+    directory_help = ('specify the output directory used for the kernel build '
+                      '(defaults to the working directory)')
+    parser.add_argument('-d', '--directory', type=str, default='.',
+                        help=directory_help)
+
+    output_help = ('path to the output command database (defaults to ' +
+                   _DEFAULT_OUTPUT + ')')
+    parser.add_argument('-o', '--output', type=str, default=_DEFAULT_OUTPUT,
+                        help=output_help)
+
+    log_level_help = ('the level of log messages to produce (defaults to ' +
+                      _DEFAULT_LOG_LEVEL + ')')
+    parser.add_argument('--log_level', choices=_VALID_LOG_LEVELS,
+                        default=_DEFAULT_LOG_LEVEL, help=log_level_help)
+
+    ar_help = 'command used for parsing .a archives'
+    parser.add_argument('-a', '--ar', type=str, default='llvm-ar', help=ar_help)
+
+    paths_help = ('directories to search or files to parse '
+                  '(files should be *.o, *.a, or modules.order). '
+                  'If nothing is specified, the current directory is searched')
+    parser.add_argument('paths', type=str, nargs='*', help=paths_help)
+
+    args = parser.parse_args()
+
+    return (args.log_level,
+            os.path.abspath(args.directory),
+            args.output,
+            args.ar,
+            args.paths if len(args.paths) > 0 else [args.directory])
+
+
+def cmdfiles_in_dir(directory):
+    """Generate the iterator of .cmd files found under the directory.
+
+    Walk under the given directory, and yield every .cmd file found.
+
+    Args:
+        directory: The directory to search for .cmd files.
+
+    Yields:
+        The path to a .cmd file.
+    """
+
+    filename_matcher = re.compile(_FILENAME_PATTERN)
+
+    for dirpath, _, filenames in os.walk(directory):
+        for filename in filenames:
+            if filename_matcher.match(filename):
+                yield os.path.join(dirpath, filename)
+
+
+def to_cmdfile(path):
+    """Return the path of .cmd file used for the given build artifact
+
+    Args:
+        Path: file path
+
+    Returns:
+        The path to .cmd file
+    """
+    dir, base = os.path.split(path)
+    return os.path.join(dir, '.' + base + '.cmd')
+
+
+def cmdfiles_for_o(obj):
+    """Generate the iterator of .cmd files associated with the object
+
+    Yield the .cmd file used to build the given object
+
+    Args:
+        obj: The object path
+
+    Yields:
+        The path to .cmd file
+    """
+    yield to_cmdfile(obj)
+
+
+def cmdfiles_for_a(archive, ar):
+    """Generate the iterator of .cmd files associated with the archive.
+
+    Parse the given archive, and yield every .cmd file used to build it.
+
+    Args:
+        archive: The archive to parse
+
+    Yields:
+        The path to every .cmd file found
+    """
+    for obj in subprocess.check_output([ar, '-t', archive]).decode().split():
+        yield to_cmdfile(obj)
+
+
+def cmdfiles_for_modorder(modorder):
+    """Generate the iterator of .cmd files associated with the modules.order.
+
+    Parse the given modules.order, and yield every .cmd file used to build the
+    contained modules.
+
+    Args:
+        modorder: The modules.order file to parse
+
+    Yields:
+        The path to every .cmd file found
+    """
+    with open(modorder) as f:
+        for line in f:
+            ko = line.rstrip()
+            base, ext = os.path.splitext(ko)
+            if ext != '.ko':
+                sys.exit('{}: module path must end with .ko'.format(ko))
+            mod = base + '.mod'
+	    # The first line of *.mod lists the objects that compose the module.
+            with open(mod) as m:
+                for obj in m.readline().split():
+                    yield to_cmdfile(obj)
+
+
+def process_line(root_directory, command_prefix, file_path):
+    """Extracts information from a .cmd line and creates an entry from it.
+
+    Args:
+        root_directory: The directory that was searched for .cmd files. Usually
+            used directly in the "directory" entry in compile_commands.json.
+        command_prefix: The extracted command line, up to the last element.
+        file_path: The .c file from the end of the extracted command.
+            Usually relative to root_directory, but sometimes absolute.
+
+    Returns:
+        An entry to append to compile_commands.
+
+    Raises:
+        ValueError: Could not find the extracted file based on file_path and
+            root_directory or file_directory.
+    """
+    # The .cmd files are intended to be included directly by Make, so they
+    # escape the pound sign '#', either as '\#' or '$(pound)' (depending on the
+    # kernel version). The compile_commands.json file is not interepreted
+    # by Make, so this code replaces the escaped version with '#'.
+    prefix = command_prefix.replace('\#', '#').replace('$(pound)', '#')
+
+    # Use os.path.abspath() to normalize the path resolving '.' and '..' .
+    abs_path = os.path.abspath(os.path.join(root_directory, file_path))
+    if not os.path.exists(abs_path):
+        raise ValueError('File %s not found' % abs_path)
+    return {
+        'directory': root_directory,
+        'file': abs_path,
+        'command': prefix + file_path,
+    }
+
+
+def main():
+    """Walks through the directory and finds and parses .cmd files."""
+    log_level, directory, output, ar, paths = parse_arguments()
+
+    level = getattr(logging, log_level)
+    logging.basicConfig(format='%(levelname)s: %(message)s', level=level)
+
+    line_matcher = re.compile(_LINE_PATTERN)
+
+    compile_commands = []
+
+    for path in paths:
+        # If 'path' is a directory, handle all .cmd files under it.
+        # Otherwise, handle .cmd files associated with the file.
+        # Most of built-in objects are linked via archives (built-in.a or lib.a)
+        # but some objects are linked to vmlinux directly.
+        # Modules are listed in modules.order.
+        if os.path.isdir(path):
+            cmdfiles = cmdfiles_in_dir(path)
+        elif path.endswith('.o'):
+            cmdfiles = cmdfiles_for_o(path)
+        elif path.endswith('.a'):
+            cmdfiles = cmdfiles_for_a(path, ar)
+        elif path.endswith('modules.order'):
+            cmdfiles = cmdfiles_for_modorder(path)
+        else:
+            sys.exit('{}: unknown file type'.format(path))
+
+        for cmdfile in cmdfiles:
+            with open(cmdfile, 'rt') as f:
+                result = line_matcher.match(f.readline())
+                if result:
+                    try:
+                        entry = process_line(directory, result.group(1),
+                                             result.group(2))
+                        compile_commands.append(entry)
+                    except ValueError as err:
+                        logging.info('Could not add line from %s: %s',
+                                     cmdfile, err)
+
+    with open(output, 'wt') as f:
+        json.dump(compile_commands, f, indent=2, sort_keys=True)
+
+
+if __name__ == '__main__':
+    main()
diff --git a/scripts/clang-tools/run-clang-tools.py b/scripts/clang-tools/run-clang-tools.py
new file mode 100755
index 0000000..f754415
--- /dev/null
+++ b/scripts/clang-tools/run-clang-tools.py
@@ -0,0 +1,74 @@
+#!/usr/bin/env python3
+# SPDX-License-Identifier: GPL-2.0
+#
+# Copyright (C) Google LLC, 2020
+#
+# Author: Nathan Huckleberry <nhuck@google.com>
+#
+"""A helper routine run clang-tidy and the clang static-analyzer on
+compile_commands.json.
+"""
+
+import argparse
+import json
+import multiprocessing
+import os
+import subprocess
+import sys
+
+
+def parse_arguments():
+    """Set up and parses command-line arguments.
+    Returns:
+        args: Dict of parsed args
+        Has keys: [path, type]
+    """
+    usage = """Run clang-tidy or the clang static-analyzer on a
+        compilation database."""
+    parser = argparse.ArgumentParser(description=usage)
+
+    type_help = "Type of analysis to be performed"
+    parser.add_argument("type",
+                        choices=["clang-tidy", "clang-analyzer"],
+                        help=type_help)
+    path_help = "Path to the compilation database to parse"
+    parser.add_argument("path", type=str, help=path_help)
+
+    return parser.parse_args()
+
+
+def init(l, a):
+    global lock
+    global args
+    lock = l
+    args = a
+
+
+def run_analysis(entry):
+    # Disable all checks, then re-enable the ones we want
+    checks = "-checks=-*,"
+    if args.type == "clang-tidy":
+        checks += "linuxkernel-*"
+    else:
+        checks += "clang-analyzer-*"
+    p = subprocess.run(["clang-tidy", "-p", args.path, checks, entry["file"]],
+                       stdout=subprocess.PIPE,
+                       stderr=subprocess.STDOUT,
+                       cwd=entry["directory"])
+    with lock:
+        sys.stderr.buffer.write(p.stdout)
+
+
+def main():
+    args = parse_arguments()
+
+    lock = multiprocessing.Lock()
+    pool = multiprocessing.Pool(initializer=init, initargs=(lock, args))
+    # Read JSON data into the datastore variable
+    with open(args.path, "r") as f:
+        datastore = json.load(f)
+        pool.map(run_analysis, datastore)
+
+
+if __name__ == "__main__":
+    main()
diff --git a/scripts/coccicheck b/scripts/coccicheck
index e04d328..209bb04 100755
--- a/scripts/coccicheck
+++ b/scripts/coccicheck
@@ -75,8 +75,13 @@
         OPTIONS="--dir $KBUILD_EXTMOD $COCCIINCLUDE"
     fi
 
+    # Use only one thread per core by default if hyperthreading is enabled
+    THREADS_PER_CORE=$(lscpu | grep "Thread(s) per core: " | tr -cd "[:digit:]")
     if [ -z "$J" ]; then
         NPROC=$(getconf _NPROCESSORS_ONLN)
+	if [ $THREADS_PER_CORE -gt 1 -a $NPROC -gt 4 ] ; then
+		NPROC=$((NPROC/2))
+	fi
     else
         NPROC="$J"
     fi
@@ -99,7 +104,7 @@
 if [ "$MODE" = "" ] ; then
     if [ "$ONLINE" = "0" ] ; then
 	echo 'You have not explicitly specified the mode to use. Using default "report" mode.'
-	echo 'Available modes are the following: patch, report, context, org'
+	echo 'Available modes are the following: patch, report, context, org, chain'
 	echo 'You can specify the mode with "make coccicheck MODE=<mode>"'
 	echo 'Note however that some modes are not implemented by some semantic patches.'
     fi
@@ -126,8 +131,14 @@
 	if [ $VERBOSE -ne 0 ] ; then
 		echo "Running ($NPROC in parallel): $@"
 	fi
-	echo $@ >>$DEBUG_FILE
-	$@ 2>>$DEBUG_FILE
+	if [ "$DEBUG_FILE" != "/dev/null" -a "$DEBUG_FILE" != "" ]; then
+                echo $@>>$DEBUG_FILE
+                $@ 2>>$DEBUG_FILE
+        else
+                echo $@
+                $@ 2>&1
+	fi
+
 	err=$?
 	if [[ $err -ne 0 ]]; then
 		echo "coccicheck failed"
diff --git a/scripts/coccinelle/api/alloc/zalloc-simple.cocci b/scripts/coccinelle/api/alloc/zalloc-simple.cocci
index 26cda3f..b3d0c3c 100644
--- a/scripts/coccinelle/api/alloc/zalloc-simple.cocci
+++ b/scripts/coccinelle/api/alloc/zalloc-simple.cocci
@@ -127,6 +127,16 @@
   if ((x==NULL) || ...) S
 - memset((T2)x,0,E1);
 
+@depends on patch@
+type T, T2;
+expression x;
+expression E1,E2,E3,E4;
+statement S;
+@@
+  x = (T)dma_alloc_coherent(E1, E2, E3, E4);
+  if ((x==NULL) || ...) S
+- memset((T2)x, 0, E2);
+
 //----------------------------------------------------------
 //  For org mode
 //----------------------------------------------------------
@@ -199,9 +209,9 @@
 position p;
 @@
 
- x = (T)dma_alloc_coherent@p(E2,E1,E3,E4);
+ x = (T)dma_alloc_coherent@p(E1,E2,E3,E4);
  if ((x==NULL) || ...) S
- memset((T2)x,0,E1);
+ memset((T2)x,0,E2);
 
 @script:python depends on org@
 p << r2.p;
@@ -217,7 +227,7 @@
 x << r2.x;
 @@
 
-msg="WARNING: dma_alloc_coherent use in %s already zeroes out memory,  so memset is not needed" % (x)
+msg="WARNING: dma_alloc_coherent used in %s already zeroes out memory, so memset is not needed" % (x)
 coccilib.report.print_report(p[0], msg)
 
 //-----------------------------------------------------------------
diff --git a/scripts/coccinelle/api/device_attr_show.cocci b/scripts/coccinelle/api/device_attr_show.cocci
new file mode 100644
index 0000000..a28dc06
--- /dev/null
+++ b/scripts/coccinelle/api/device_attr_show.cocci
@@ -0,0 +1,55 @@
+// SPDX-License-Identifier: GPL-2.0-only
+///
+/// From Documentation/filesystems/sysfs.rst:
+///  show() must not use snprintf() when formatting the value to be
+///  returned to user space. If you can guarantee that an overflow
+///  will never happen you can use sprintf() otherwise you must use
+///  scnprintf().
+///
+// Confidence: High
+// Copyright: (C) 2020 Denis Efremov ISPRAS
+// Options: --no-includes --include-headers
+//
+
+virtual report
+virtual org
+virtual context
+virtual patch
+
+@r depends on !patch@
+identifier show, dev, attr, buf;
+position p;
+@@
+
+ssize_t show(struct device *dev, struct device_attribute *attr, char *buf)
+{
+	<...
+*	return snprintf@p(...);
+	...>
+}
+
+@rp depends on patch@
+identifier show, dev, attr, buf;
+@@
+
+ssize_t show(struct device *dev, struct device_attribute *attr, char *buf)
+{
+	<...
+	return
+-		snprintf
++		scnprintf
+			(...);
+	...>
+}
+
+@script: python depends on report@
+p << r.p;
+@@
+
+coccilib.report.print_report(p[0], "WARNING: use scnprintf or sprintf")
+
+@script: python depends on org@
+p << r.p;
+@@
+
+coccilib.org.print_todo(p[0], "WARNING: use scnprintf or sprintf")
diff --git a/scripts/coccinelle/api/kfree_mismatch.cocci b/scripts/coccinelle/api/kfree_mismatch.cocci
new file mode 100644
index 0000000..d46a9b3
--- /dev/null
+++ b/scripts/coccinelle/api/kfree_mismatch.cocci
@@ -0,0 +1,228 @@
+// SPDX-License-Identifier: GPL-2.0-only
+///
+/// Check that kvmalloc'ed memory is freed by kfree functions,
+/// vmalloc'ed by vfree functions and kvmalloc'ed by kvfree
+/// functions.
+///
+// Confidence: High
+// Copyright: (C) 2020 Denis Efremov ISPRAS
+// Options: --no-includes --include-headers
+//
+
+virtual patch
+virtual report
+virtual org
+virtual context
+
+@alloc@
+expression E, E1;
+position kok, vok;
+@@
+
+(
+  if (...) {
+    ...
+    E = \(kmalloc\|kzalloc\|krealloc\|kcalloc\|
+          kmalloc_node\|kzalloc_node\|kmalloc_array\|
+          kmalloc_array_node\|kcalloc_node\)(...)@kok
+    ...
+  } else {
+    ...
+    E = \(vmalloc\|vzalloc\|vmalloc_user\|vmalloc_node\|
+          vzalloc_node\|vmalloc_exec\|vmalloc_32\|
+          vmalloc_32_user\|__vmalloc\|__vmalloc_node_range\|
+          __vmalloc_node\)(...)@vok
+    ...
+  }
+|
+  E = \(kmalloc\|kzalloc\|krealloc\|kcalloc\|kmalloc_node\|kzalloc_node\|
+        kmalloc_array\|kmalloc_array_node\|kcalloc_node\)(...)@kok
+  ... when != E = E1
+      when any
+  if (E == NULL) {
+    ...
+    E = \(vmalloc\|vzalloc\|vmalloc_user\|vmalloc_node\|
+          vzalloc_node\|vmalloc_exec\|vmalloc_32\|
+          vmalloc_32_user\|__vmalloc\|__vmalloc_node_range\|
+          __vmalloc_node\)(...)@vok
+    ...
+  }
+)
+
+@free@
+expression E;
+position fok;
+@@
+
+  E = \(kvmalloc\|kvzalloc\|kvcalloc\|kvzalloc_node\|kvmalloc_node\|
+        kvmalloc_array\)(...)
+  ...
+  kvfree(E)@fok
+
+@vfree depends on !patch@
+expression E;
+position a != alloc.kok;
+position f != free.fok;
+@@
+
+* E = \(kmalloc\|kzalloc\|krealloc\|kcalloc\|kmalloc_node\|
+*       kzalloc_node\|kmalloc_array\|kmalloc_array_node\|
+*       kcalloc_node\)(...)@a
+  ... when != if (...) { ... E = \(vmalloc\|vzalloc\|vmalloc_user\|vmalloc_node\|vzalloc_node\|vmalloc_exec\|vmalloc_32\|vmalloc_32_user\|__vmalloc\|__vmalloc_node_range\|__vmalloc_node\)(...); ... }
+      when != is_vmalloc_addr(E)
+      when any
+* \(vfree\|vfree_atomic\|kvfree\)(E)@f
+
+@depends on patch exists@
+expression E;
+position a != alloc.kok;
+position f != free.fok;
+@@
+
+  E = \(kmalloc\|kzalloc\|krealloc\|kcalloc\|kmalloc_node\|
+        kzalloc_node\|kmalloc_array\|kmalloc_array_node\|
+        kcalloc_node\)(...)@a
+  ... when != if (...) { ... E = \(vmalloc\|vzalloc\|vmalloc_user\|vmalloc_node\|vzalloc_node\|vmalloc_exec\|vmalloc_32\|vmalloc_32_user\|__vmalloc\|__vmalloc_node_range\|__vmalloc_node\)(...); ... }
+      when != is_vmalloc_addr(E)
+      when any
+- \(vfree\|vfree_atomic\|kvfree\)(E)@f
++ kfree(E)
+
+@kfree depends on !patch@
+expression E;
+position a != alloc.vok;
+position f != free.fok;
+@@
+
+* E = \(vmalloc\|vzalloc\|vmalloc_user\|vmalloc_node\|vzalloc_node\|
+*       vmalloc_exec\|vmalloc_32\|vmalloc_32_user\|__vmalloc\|
+*       __vmalloc_node_range\|__vmalloc_node\)(...)@a
+  ... when != is_vmalloc_addr(E)
+      when any
+* \(kfree\|kfree_sensitive\|kvfree\)(E)@f
+
+@depends on patch exists@
+expression E;
+position a != alloc.vok;
+position f != free.fok;
+@@
+
+  E = \(vmalloc\|vzalloc\|vmalloc_user\|vmalloc_node\|vzalloc_node\|
+        vmalloc_exec\|vmalloc_32\|vmalloc_32_user\|__vmalloc\|
+        __vmalloc_node_range\|__vmalloc_node\)(...)@a
+  ... when != is_vmalloc_addr(E)
+      when any
+- \(kfree\|kvfree\)(E)@f
++ vfree(E)
+
+@kvfree depends on !patch@
+expression E;
+position a, f;
+@@
+
+* E = \(kvmalloc\|kvzalloc\|kvcalloc\|kvzalloc_node\|kvmalloc_node\|
+*       kvmalloc_array\)(...)@a
+  ... when != is_vmalloc_addr(E)
+      when any
+* \(kfree\|kfree_sensitive\|vfree\|vfree_atomic\)(E)@f
+
+@depends on patch exists@
+expression E;
+@@
+
+  E = \(kvmalloc\|kvzalloc\|kvcalloc\|kvzalloc_node\|kvmalloc_node\|
+        kvmalloc_array\)(...)
+  ... when != is_vmalloc_addr(E)
+      when any
+- \(kfree\|vfree\)(E)
++ kvfree(E)
+
+@kvfree_switch depends on !patch@
+expression alloc.E;
+position f;
+@@
+
+  ... when != is_vmalloc_addr(E)
+      when any
+* \(kfree\|kfree_sensitive\|vfree\|vfree_atomic\)(E)@f
+
+@depends on patch exists@
+expression alloc.E;
+position f;
+@@
+
+  ... when != is_vmalloc_addr(E)
+      when any
+(
+- \(kfree\|vfree\)(E)@f
++ kvfree(E)
+|
+- kfree_sensitive(E)@f
++ kvfree_sensitive(E)
+)
+
+@script: python depends on report@
+a << vfree.a;
+f << vfree.f;
+@@
+
+msg = "WARNING kmalloc is used to allocate this memory at line %s" % (a[0].line)
+coccilib.report.print_report(f[0], msg)
+
+@script: python depends on org@
+a << vfree.a;
+f << vfree.f;
+@@
+
+msg = "WARNING kmalloc is used to allocate this memory at line %s" % (a[0].line)
+coccilib.org.print_todo(f[0], msg)
+
+@script: python depends on report@
+a << kfree.a;
+f << kfree.f;
+@@
+
+msg = "WARNING vmalloc is used to allocate this memory at line %s" % (a[0].line)
+coccilib.report.print_report(f[0], msg)
+
+@script: python depends on org@
+a << kfree.a;
+f << kfree.f;
+@@
+
+msg = "WARNING vmalloc is used to allocate this memory at line %s" % (a[0].line)
+coccilib.org.print_todo(f[0], msg)
+
+@script: python depends on report@
+a << kvfree.a;
+f << kvfree.f;
+@@
+
+msg = "WARNING kvmalloc is used to allocate this memory at line %s" % (a[0].line)
+coccilib.report.print_report(f[0], msg)
+
+@script: python depends on org@
+a << kvfree.a;
+f << kvfree.f;
+@@
+
+msg = "WARNING kvmalloc is used to allocate this memory at line %s" % (a[0].line)
+coccilib.org.print_todo(f[0], msg)
+
+@script: python depends on report@
+ka << alloc.kok;
+va << alloc.vok;
+f << kvfree_switch.f;
+@@
+
+msg = "WARNING kmalloc (line %s) && vmalloc (line %s) are used to allocate this memory" % (ka[0].line, va[0].line)
+coccilib.report.print_report(f[0], msg)
+
+@script: python depends on org@
+ka << alloc.kok;
+va << alloc.vok;
+f << kvfree_switch.f;
+@@
+
+msg = "WARNING kmalloc (line %s) && vmalloc (line %s) are used to allocate this memory" % (ka[0].line, va[0].line)
+coccilib.org.print_todo(f[0], msg)
diff --git a/scripts/coccinelle/api/kfree_sensitive.cocci b/scripts/coccinelle/api/kfree_sensitive.cocci
new file mode 100644
index 0000000..8d980eb
--- /dev/null
+++ b/scripts/coccinelle/api/kfree_sensitive.cocci
@@ -0,0 +1,100 @@
+// SPDX-License-Identifier: GPL-2.0-only
+///
+/// Use kfree_sensitive, kvfree_sensitive rather than memset or
+/// memzero_explicit followed by kfree.
+///
+// Confidence: High
+// Copyright: (C) 2020 Denis Efremov ISPRAS
+// Options: --no-includes --include-headers
+//
+// Keywords: kfree_sensitive, kvfree_sensitive
+//
+
+virtual context
+virtual patch
+virtual org
+virtual report
+
+@initialize:python@
+@@
+# kmalloc_oob_in_memset uses memset to explicitly trigger out-of-bounds access
+filter = frozenset(['kmalloc_oob_in_memset',
+		    'kfree_sensitive', 'kvfree_sensitive'])
+
+def relevant(p):
+    return not (filter & {el.current_element for el in p})
+
+@cond@
+position ok;
+@@
+
+if (...)
+  \(memset@ok\|memzero_explicit@ok\)(...);
+
+@r depends on !patch forall@
+expression E;
+position p : script:python() { relevant(p) };
+position m != cond.ok;
+type T;
+@@
+
+(
+* memset@m((T)E, 0, ...);
+|
+* memzero_explicit@m((T)E, ...);
+)
+  ... when != E
+      when strict
+* \(kfree\|vfree\|kvfree\)(E)@p;
+
+@rp_memzero depends on patch@
+expression E, size;
+position p : script:python() { relevant(p) };
+position m != cond.ok;
+type T;
+@@
+
+- memzero_explicit@m((T)E, size);
+  ... when != E
+      when strict
+(
+- kfree(E)@p;
++ kfree_sensitive(E);
+|
+- \(vfree\|kvfree\)(E)@p;
++ kvfree_sensitive(E, size);
+)
+
+@rp_memset depends on patch@
+expression E, size;
+position p : script:python() { relevant(p) };
+position m != cond.ok;
+type T;
+@@
+
+- memset@m((T)E, 0, size);
+  ... when != E
+      when strict
+(
+- kfree(E)@p;
++ kfree_sensitive(E);
+|
+- \(vfree\|kvfree\)(E)@p;
++ kvfree_sensitive(E, size);
+)
+
+@script:python depends on report@
+p << r.p;
+m << r.m;
+@@
+
+msg = "WARNING opportunity for kfree_sensitive/kvfree_sensitive (memset at line %s)"
+coccilib.report.print_report(p[0], msg % (m[0].line))
+
+@script:python depends on org@
+p << r.p;
+m << r.m;
+@@
+
+msg = "WARNING opportunity for kfree_sensitive/kvfree_sensitive (memset at line %s)"
+coccilib.org.print_todo(p[0], msg % (m[0].line))
diff --git a/scripts/coccinelle/api/kobj_to_dev.cocci b/scripts/coccinelle/api/kobj_to_dev.cocci
new file mode 100644
index 0000000..cd5d31c
--- /dev/null
+++ b/scripts/coccinelle/api/kobj_to_dev.cocci
@@ -0,0 +1,45 @@
+// SPDX-License-Identifier: GPL-2.0-only
+///
+/// Use kobj_to_dev() instead of container_of()
+///
+// Confidence: High
+// Copyright: (C) 2020 Denis Efremov ISPRAS
+// Options: --no-includes --include-headers
+//
+// Keywords: kobj_to_dev, container_of
+//
+
+virtual context
+virtual report
+virtual org
+virtual patch
+
+
+@r depends on !patch@
+expression ptr;
+symbol kobj;
+position p;
+@@
+
+* container_of(ptr, struct device, kobj)@p
+
+
+@depends on patch@
+expression ptr;
+@@
+
+- container_of(ptr, struct device, kobj)
++ kobj_to_dev(ptr)
+
+
+@script:python depends on report@
+p << r.p;
+@@
+
+coccilib.report.print_report(p[0], "WARNING opportunity for kobj_to_dev()")
+
+@script:python depends on org@
+p << r.p;
+@@
+
+coccilib.org.print_todo(p[0], "WARNING opportunity for kobj_to_dev()")
diff --git a/scripts/coccinelle/api/kstrdup.cocci b/scripts/coccinelle/api/kstrdup.cocci
index 19f2645..3c6dc54 100644
--- a/scripts/coccinelle/api/kstrdup.cocci
+++ b/scripts/coccinelle/api/kstrdup.cocci
@@ -66,7 +66,7 @@
 
 *   x = strlen(from) + 1;
     ... when != \( x = E1 \| from = E1 \)
-*   to = \(kmalloc@p1\|kzalloc@p2\)(x,flag);
+*   to = \(kmalloc@p1\|kzalloc@p1\)(x,flag);
     ... when != \(x = E2 \| from = E2 \| to = E2 \)
     if (to==NULL || ...) S
     ... when != \(x = E3 \| from = E3 \| to = E3 \)
diff --git a/scripts/coccinelle/api/kvmalloc.cocci b/scripts/coccinelle/api/kvmalloc.cocci
new file mode 100644
index 0000000..c30dab7
--- /dev/null
+++ b/scripts/coccinelle/api/kvmalloc.cocci
@@ -0,0 +1,256 @@
+// SPDX-License-Identifier: GPL-2.0-only
+///
+/// Find if/else condition with kmalloc/vmalloc calls.
+/// Suggest to use kvmalloc instead. Same for kvfree.
+///
+// Confidence: High
+// Copyright: (C) 2020 Denis Efremov ISPRAS
+// Options: --no-includes --include-headers
+//
+
+virtual patch
+virtual report
+virtual org
+virtual context
+
+@initialize:python@
+@@
+filter = frozenset(['kvfree'])
+
+def relevant(p):
+    return not (filter & {el.current_element for el in p})
+
+@kvmalloc depends on !patch@
+expression E, E1, size;
+identifier flags;
+binary operator cmp = {<=, <, ==, >, >=};
+identifier x;
+type T;
+position p;
+@@
+
+(
+* if (size cmp E1 || ...)@p {
+    ...
+*    E = \(kmalloc\|kzalloc\|kcalloc\|kmalloc_node\|kzalloc_node\|
+*          kmalloc_array\|kmalloc_array_node\|kcalloc_node\)
+*          (..., size, \(flags\|GFP_KERNEL\|\(GFP_KERNEL\|flags\)|__GFP_NOWARN\), ...)
+    ...
+  } else {
+    ...
+*    E = \(vmalloc\|vzalloc\|vmalloc_node\|vzalloc_node\)(..., size, ...)
+    ...
+  }
+|
+* E = \(kmalloc\|kzalloc\|kcalloc\|kmalloc_node\|kzalloc_node\|
+*       kmalloc_array\|kmalloc_array_node\|kcalloc_node\)
+*       (..., size, \(flags\|GFP_KERNEL\|\(GFP_KERNEL\|flags\)|__GFP_NOWARN\), ...)
+  ... when != E = E1
+      when != size = E1
+      when any
+* if (E == NULL)@p {
+    ...
+*   E = \(vmalloc\|vzalloc\|vmalloc_node\|vzalloc_node\)(..., size, ...)
+    ...
+  }
+|
+* T x = \(kmalloc\|kzalloc\|kcalloc\|kmalloc_node\|kzalloc_node\|
+*         kmalloc_array\|kmalloc_array_node\|kcalloc_node\)
+*         (..., size, \(flags\|GFP_KERNEL\|\(GFP_KERNEL\|flags\)|__GFP_NOWARN\), ...);
+  ... when != x = E1
+      when != size = E1
+      when any
+* if (x == NULL)@p {
+    ...
+*   x = \(vmalloc\|vzalloc\|vmalloc_node\|vzalloc_node\)(..., size, ...)
+    ...
+  }
+)
+
+@kvfree depends on !patch@
+expression E;
+position p : script:python() { relevant(p) };
+@@
+
+* if (is_vmalloc_addr(E))@p {
+    ...
+*   vfree(E)
+    ...
+  } else {
+    ... when != krealloc(E, ...)
+        when any
+*   \(kfree\|kzfree\)(E)
+    ...
+  }
+
+@depends on patch@
+expression E, E1, size, node;
+binary operator cmp = {<=, <, ==, >, >=};
+identifier flags, x;
+type T;
+@@
+
+(
+- if (size cmp E1)
+-    E = kmalloc(size, flags);
+- else
+-    E = vmalloc(size);
++ E = kvmalloc(size, flags);
+|
+- if (size cmp E1)
+-    E = kmalloc(size, \(GFP_KERNEL\|GFP_KERNEL|__GFP_NOWARN\));
+- else
+-    E = vmalloc(size);
++ E = kvmalloc(size, GFP_KERNEL);
+|
+- E = kmalloc(size, flags | __GFP_NOWARN);
+- if (E == NULL)
+-   E = vmalloc(size);
++ E = kvmalloc(size, flags);
+|
+- E = kmalloc(size, \(GFP_KERNEL\|GFP_KERNEL|__GFP_NOWARN\));
+- if (E == NULL)
+-   E = vmalloc(size);
++ E = kvmalloc(size, GFP_KERNEL);
+|
+- T x = kmalloc(size, flags | __GFP_NOWARN);
+- if (x == NULL)
+-   x = vmalloc(size);
++ T x = kvmalloc(size, flags);
+|
+- T x = kmalloc(size, \(GFP_KERNEL\|GFP_KERNEL|__GFP_NOWARN\));
+- if (x == NULL)
+-   x = vmalloc(size);
++ T x = kvmalloc(size, GFP_KERNEL);
+|
+- if (size cmp E1)
+-    E = kzalloc(size, flags);
+- else
+-    E = vzalloc(size);
++ E = kvzalloc(size, flags);
+|
+- if (size cmp E1)
+-    E = kzalloc(size, \(GFP_KERNEL\|GFP_KERNEL|__GFP_NOWARN\));
+- else
+-    E = vzalloc(size);
++ E = kvzalloc(size, GFP_KERNEL);
+|
+- E = kzalloc(size, flags | __GFP_NOWARN);
+- if (E == NULL)
+-   E = vzalloc(size);
++ E = kvzalloc(size, flags);
+|
+- E = kzalloc(size, \(GFP_KERNEL\|GFP_KERNEL|__GFP_NOWARN\));
+- if (E == NULL)
+-   E = vzalloc(size);
++ E = kvzalloc(size, GFP_KERNEL);
+|
+- T x = kzalloc(size, flags | __GFP_NOWARN);
+- if (x == NULL)
+-   x = vzalloc(size);
++ T x = kvzalloc(size, flags);
+|
+- T x = kzalloc(size, \(GFP_KERNEL\|GFP_KERNEL|__GFP_NOWARN\));
+- if (x == NULL)
+-   x = vzalloc(size);
++ T x = kvzalloc(size, GFP_KERNEL);
+|
+- if (size cmp E1)
+-    E = kmalloc_node(size, flags, node);
+- else
+-    E = vmalloc_node(size, node);
++ E = kvmalloc_node(size, flags, node);
+|
+- if (size cmp E1)
+-    E = kmalloc_node(size, \(GFP_KERNEL\|GFP_KERNEL|__GFP_NOWARN\), node);
+- else
+-    E = vmalloc_node(size, node);
++ E = kvmalloc_node(size, GFP_KERNEL, node);
+|
+- E = kmalloc_node(size, flags | __GFP_NOWARN, node);
+- if (E == NULL)
+-   E = vmalloc_node(size, node);
++ E = kvmalloc_node(size, flags, node);
+|
+- E = kmalloc_node(size, \(GFP_KERNEL\|GFP_KERNEL|__GFP_NOWARN\), node);
+- if (E == NULL)
+-   E = vmalloc_node(size, node);
++ E = kvmalloc_node(size, GFP_KERNEL, node);
+|
+- T x = kmalloc_node(size, flags | __GFP_NOWARN, node);
+- if (x == NULL)
+-   x = vmalloc_node(size, node);
++ T x = kvmalloc_node(size, flags, node);
+|
+- T x = kmalloc_node(size, \(GFP_KERNEL\|GFP_KERNEL|__GFP_NOWARN\), node);
+- if (x == NULL)
+-   x = vmalloc_node(size, node);
++ T x = kvmalloc_node(size, GFP_KERNEL, node);
+|
+- if (size cmp E1)
+-    E = kvzalloc_node(size, flags, node);
+- else
+-    E = vzalloc_node(size, node);
++ E = kvzalloc_node(size, flags, node);
+|
+- if (size cmp E1)
+-    E = kvzalloc_node(size, \(GFP_KERNEL\|GFP_KERNEL|__GFP_NOWARN\), node);
+- else
+-    E = vzalloc_node(size, node);
++ E = kvzalloc_node(size, GFP_KERNEL, node);
+|
+- E = kvzalloc_node(size, flags | __GFP_NOWARN, node);
+- if (E == NULL)
+-   E = vzalloc_node(size, node);
++ E = kvzalloc_node(size, flags, node);
+|
+- E = kvzalloc_node(size, \(GFP_KERNEL\|GFP_KERNEL|__GFP_NOWARN\), node);
+- if (E == NULL)
+-   E = vzalloc_node(size, node);
++ E = kvzalloc_node(size, GFP_KERNEL, node);
+|
+- T x = kvzalloc_node(size, flags | __GFP_NOWARN, node);
+- if (x == NULL)
+-   x = vzalloc_node(size, node);
++ T x = kvzalloc_node(size, flags, node);
+|
+- T x = kvzalloc_node(size, \(GFP_KERNEL\|GFP_KERNEL|__GFP_NOWARN\), node);
+- if (x == NULL)
+-   x = vzalloc_node(size, node);
++ T x = kvzalloc_node(size, GFP_KERNEL, node);
+)
+
+@depends on patch@
+expression E;
+position p : script:python() { relevant(p) };
+@@
+
+- if (is_vmalloc_addr(E))@p
+-   vfree(E);
+- else
+-   kfree(E);
++ kvfree(E);
+
+@script: python depends on report@
+p << kvmalloc.p;
+@@
+
+coccilib.report.print_report(p[0], "WARNING opportunity for kvmalloc")
+
+@script: python depends on org@
+p << kvmalloc.p;
+@@
+
+coccilib.org.print_todo(p[0], "WARNING opportunity for kvmalloc")
+
+@script: python depends on report@
+p << kvfree.p;
+@@
+
+coccilib.report.print_report(p[0], "WARNING opportunity for kvfree")
+
+@script: python depends on org@
+p << kvfree.p;
+@@
+
+coccilib.org.print_todo(p[0], "WARNING opportunity for kvfree")
diff --git a/scripts/coccinelle/api/memdup_user.cocci b/scripts/coccinelle/api/memdup_user.cocci
index c809ab1..e01e951 100644
--- a/scripts/coccinelle/api/memdup_user.cocci
+++ b/scripts/coccinelle/api/memdup_user.cocci
@@ -15,12 +15,22 @@
 virtual org
 virtual report
 
+@initialize:python@
+@@
+filter = frozenset(['memdup_user', 'vmemdup_user'])
+
+def relevant(p):
+    return not (filter & {el.current_element for el in p})
+
 @depends on patch@
 expression from,to,size;
 identifier l1,l2;
+position p : script:python() { relevant(p) };
 @@
 
--  to = \(kmalloc\|kzalloc\)(size,GFP_KERNEL);
+-  to = \(kmalloc@p\|kzalloc@p\)
+-		(size,\(GFP_KERNEL\|GFP_USER\|
+-		      \(GFP_KERNEL\|GFP_USER\)|__GFP_NOWARN\));
 +  to = memdup_user(from,size);
    if (
 -      to==NULL
@@ -37,13 +47,49 @@
 -    ...+>
 -  }
 
+@depends on patch@
+expression from,to,size;
+identifier l1,l2;
+position p : script:python() { relevant(p) };
+@@
+
+-  to = \(kvmalloc@p\|kvzalloc@p\)(size,\(GFP_KERNEL\|GFP_USER\));
++  to = vmemdup_user(from,size);
+   if (
+-      to==NULL
++      IS_ERR(to)
+                 || ...) {
+   <+... when != goto l1;
+-  -ENOMEM
++  PTR_ERR(to)
+   ...+>
+   }
+-  if (copy_from_user(to, from, size) != 0) {
+-    <+... when != goto l2;
+-    -EFAULT
+-    ...+>
+-  }
+
 @r depends on !patch@
 expression from,to,size;
-position p;
+position p : script:python() { relevant(p) };
 statement S1,S2;
 @@
 
-*  to = \(kmalloc@p\|kzalloc@p\)(size,GFP_KERNEL);
+*  to = \(kmalloc@p\|kzalloc@p\)
+		(size,\(GFP_KERNEL\|GFP_USER\|
+		      \(GFP_KERNEL\|GFP_USER\)|__GFP_NOWARN\));
+   if (to==NULL || ...) S1
+   if (copy_from_user(to, from, size) != 0)
+   S2
+
+@rv depends on !patch@
+expression from,to,size;
+position p : script:python() { relevant(p) };
+statement S1,S2;
+@@
+
+*  to = \(kvmalloc@p\|kvzalloc@p\)(size,\(GFP_KERNEL\|GFP_USER\));
    if (to==NULL || ...) S1
    if (copy_from_user(to, from, size) != 0)
    S2
@@ -59,3 +105,15 @@
 @@
 
 coccilib.report.print_report(p[0], "WARNING opportunity for memdup_user")
+
+@script:python depends on org@
+p << rv.p;
+@@
+
+coccilib.org.print_todo(p[0], "WARNING opportunity for vmemdup_user")
+
+@script:python depends on report@
+p << rv.p;
+@@
+
+coccilib.report.print_report(p[0], "WARNING opportunity for vmemdup_user")
diff --git a/scripts/coccinelle/free/devm_free.cocci b/scripts/coccinelle/free/devm_free.cocci
index 441799b..da80050 100644
--- a/scripts/coccinelle/free/devm_free.cocci
+++ b/scripts/coccinelle/free/devm_free.cocci
@@ -52,8 +52,6 @@
 |
  x = devm_ioremap(...)
 |
- x = devm_ioremap_nocache(...)
-|
  x = devm_ioport_map(...)
 )
 
@@ -85,17 +83,13 @@
 |
  x = ioremap(...)
 |
- x = ioremap_nocache(...)
-|
  x = ioport_map(...)
 )
 ...
 (
  kfree@p(x)
 |
- kzfree@p(x)
-|
- __krealloc@p(x, ...)
+ kfree_sensitive@p(x)
 |
  krealloc@p(x, ...)
 |
@@ -118,9 +112,7 @@
 (
 * kfree@p(x)
 |
-* kzfree@p(x)
-|
-* __krealloc@p(x, ...)
+* kfree_sensitive@p(x)
 |
 * krealloc@p(x, ...)
 |
diff --git a/scripts/coccinelle/free/ifnullfree.cocci b/scripts/coccinelle/free/ifnullfree.cocci
index b3290c4..285b92d 100644
--- a/scripts/coccinelle/free/ifnullfree.cocci
+++ b/scripts/coccinelle/free/ifnullfree.cocci
@@ -21,7 +21,13 @@
 (
   kfree(E);
 |
-  kzfree(E);
+  kvfree(E);
+|
+  kfree_sensitive(E);
+|
+  kvfree_sensitive(E, ...);
+|
+  vfree(E);
 |
   debugfs_remove(E);
 |
@@ -42,9 +48,10 @@
 @@
 
 * if (E != NULL)
-*	\(kfree@p\|kzfree@p\|debugfs_remove@p\|debugfs_remove_recursive@p\|
+*	\(kfree@p\|kvfree@p\|kfree_sensitive@p\|kvfree_sensitive@p\|vfree@p\|
+*         debugfs_remove@p\|debugfs_remove_recursive@p\|
 *         usb_free_urb@p\|kmem_cache_destroy@p\|mempool_destroy@p\|
-*         dma_pool_destroy@p\)(E);
+*         dma_pool_destroy@p\)(E, ...);
 
 @script:python depends on org@
 p << r.p;
diff --git a/scripts/coccinelle/free/iounmap.cocci b/scripts/coccinelle/free/iounmap.cocci
index 0e60e11..63b81d0 100644
--- a/scripts/coccinelle/free/iounmap.cocci
+++ b/scripts/coccinelle/free/iounmap.cocci
@@ -23,7 +23,7 @@
 position p1,p2,p3;
 @@
 
-e = \(ioremap@p1\|ioremap_nocache@p1\)(...)
+e = \(ioremap@p1\)(...)
 ... when != iounmap(e)
 if (<+...e...+>) S
 ... when any
diff --git a/scripts/coccinelle/free/kfree.cocci b/scripts/coccinelle/free/kfree.cocci
index e9d50e7..1685683 100644
--- a/scripts/coccinelle/free/kfree.cocci
+++ b/scripts/coccinelle/free/kfree.cocci
@@ -24,7 +24,7 @@
 (
 * kfree@p1(E)
 |
-* kzfree@p1(E)
+* kfree_sensitive@p1(E)
 )
 
 @print expression@
@@ -68,7 +68,7 @@
 (
 * kfree@ok(E)
 |
-* kzfree@ok(E)
+* kfree_sensitive@ok(E)
 )
   ... when != break;
       when != goto l;
@@ -86,7 +86,7 @@
 (
 * kfree@p1(E,...)
 |
-* kzfree@p1(E,...)
+* kfree_sensitive@p1(E,...)
 )
 ...
 (
diff --git a/scripts/coccinelle/free/kfreeaddr.cocci b/scripts/coccinelle/free/kfreeaddr.cocci
index cfaf308..142af63 100644
--- a/scripts/coccinelle/free/kfreeaddr.cocci
+++ b/scripts/coccinelle/free/kfreeaddr.cocci
@@ -20,7 +20,7 @@
 (
 * kfree@p(&e->f)
 |
-* kzfree@p(&e->f)
+* kfree_sensitive@p(&e->f)
 )
 
 @script:python depends on org@
diff --git a/scripts/coccinelle/iterators/for_each_child.cocci b/scripts/coccinelle/iterators/for_each_child.cocci
new file mode 100644
index 0000000..bc39461
--- /dev/null
+++ b/scripts/coccinelle/iterators/for_each_child.cocci
@@ -0,0 +1,358 @@
+// SPDX-License-Identifier: GPL-2.0-only
+// Adds missing of_node_put() before return/break/goto statement within a for_each iterator for child nodes.
+//# False positives can be due to function calls within the for_each
+//# loop that may encapsulate an of_node_put.
+///
+// Confidence: High
+// Copyright: (C) 2020 Sumera Priyadarsini
+// URL: http://coccinelle.lip6.fr
+// Options: --no-includes --include-headers
+
+virtual patch
+virtual context
+virtual org
+virtual report
+
+@r@
+local idexpression n;
+expression e1,e2;
+iterator name for_each_node_by_name, for_each_node_by_type,
+for_each_compatible_node, for_each_matching_node,
+for_each_matching_node_and_match, for_each_child_of_node,
+for_each_available_child_of_node, for_each_node_with_property;
+iterator i;
+statement S;
+expression list [n1] es;
+@@
+
+(
+(
+for_each_node_by_name(n,e1) S
+|
+for_each_node_by_type(n,e1) S
+|
+for_each_compatible_node(n,e1,e2) S
+|
+for_each_matching_node(n,e1) S
+|
+for_each_matching_node_and_match(n,e1,e2) S
+|
+for_each_child_of_node(e1,n) S
+|
+for_each_available_child_of_node(e1,n) S
+|
+for_each_node_with_property(n,e1) S
+)
+&
+i(es,n,...) S
+)
+
+@ruleone depends on patch && !context && !org && !report@
+
+local idexpression r.n;
+iterator r.i,i1;
+expression e;
+expression list [r.n1] es;
+statement S;
+@@
+
+ i(es,n,...) {
+   ...
+(
+   of_node_put(n);
+|
+   e = n
+|
+   return n;
+|
+   i1(...,n,...) S
+|
+- return of_node_get(n);
++ return n;
+|
++  of_node_put(n);
+?  return ...;
+)
+   ... when any
+ }
+
+@ruletwo depends on patch && !context && !org && !report@
+
+local idexpression r.n;
+iterator r.i,i1,i2;
+expression e,e1;
+expression list [r.n1] es;
+statement S,S2;
+@@
+
+ i(es,n,...) {
+   ...
+(
+   of_node_put(n);
+|
+   e = n
+|
+   i1(...,n,...) S
+|
++  of_node_put(n);
+?  break;
+)
+   ... when any
+ }
+... when != n
+    when strict
+    when forall
+(
+ n = e1;
+|
+?i2(...,n,...) S2
+)
+
+@rulethree depends on patch && !context && !org && !report exists@
+
+local idexpression r.n;
+iterator r.i,i1,i2;
+expression e,e1;
+identifier l;
+expression list [r.n1] es;
+statement S,S2;
+@@
+
+ i(es,n,...) {
+   ...
+(
+   of_node_put(n);
+|
+   e = n
+|
+   i1(...,n,...) S
+|
++  of_node_put(n);
+?  goto l;
+)
+   ... when any
+ }
+... when exists
+l: ... when != n
+       when strict
+       when forall
+(
+ n = e1;
+|
+?i2(...,n,...) S2
+)
+
+// ----------------------------------------------------------------------------
+
+@ruleone_context depends on !patch && (context || org || report) exists@
+statement S;
+expression e;
+expression list[r.n1] es;
+iterator r.i, i1;
+local idexpression r.n;
+position j0, j1;
+@@
+
+ i@j0(es,n,...) {
+   ...
+(
+   of_node_put(n);
+|
+   e = n
+|
+   return n;
+|
+   i1(...,n,...) S
+|
+  return @j1 ...;
+)
+   ... when any
+ }
+
+@ruleone_disj depends on !patch && (context || org || report)@
+expression list[r.n1] es;
+iterator r.i;
+local idexpression r.n;
+position ruleone_context.j0, ruleone_context.j1;
+@@
+
+*  i@j0(es,n,...) {
+   ...
+*return  @j1...;
+   ... when any
+ }
+
+@ruletwo_context depends on !patch && (context || org || report) exists@
+statement S, S2;
+expression e, e1;
+expression list[r.n1] es;
+iterator r.i, i1, i2;
+local idexpression r.n;
+position j0, j2;
+@@
+
+ i@j0(es,n,...) {
+   ...
+(
+   of_node_put(n);
+|
+   e = n
+|
+   i1(...,n,...) S
+|
+  break@j2;
+)
+   ... when any
+ }
+... when != n
+    when strict
+    when forall
+(
+ n = e1;
+|
+?i2(...,n,...) S2
+)
+
+@ruletwo_disj depends on !patch && (context || org || report)@
+statement S2;
+expression e1;
+expression list[r.n1] es;
+iterator r.i, i2;
+local idexpression r.n;
+position ruletwo_context.j0, ruletwo_context.j2;
+@@
+
+*  i@j0(es,n,...) {
+   ...
+*break @j2;
+   ... when any
+ }
+... when != n
+    when strict
+    when forall
+(
+  n = e1;
+|
+?i2(...,n,...) S2
+)
+
+@rulethree_context depends on !patch && (context || org || report) exists@
+identifier l;
+statement S,S2;
+expression e, e1;
+expression list[r.n1] es;
+iterator r.i, i1, i2;
+local idexpression r.n;
+position j0, j3;
+@@
+
+ i@j0(es,n,...) {
+   ...
+(
+   of_node_put(n);
+|
+   e = n
+|
+   i1(...,n,...) S
+|
+  goto l@j3;
+)
+  ... when any
+ }
+... when exists
+l:
+... when != n
+    when strict
+    when forall
+(
+ n = e1;
+|
+?i2(...,n,...) S2
+)
+
+@rulethree_disj depends on !patch && (context || org || report) exists@
+identifier l;
+statement S2;
+expression e1;
+expression list[r.n1] es;
+iterator r.i, i2;
+local idexpression r.n;
+position rulethree_context.j0, rulethree_context.j3;
+@@
+
+*  i@j0(es,n,...) {
+   ...
+*goto l@j3;
+   ... when any
+ }
+... when exists
+ l:
+ ... when != n
+     when strict
+     when forall
+(
+ n = e1;
+|
+?i2(...,n,...) S2
+)
+
+// ----------------------------------------------------------------------------
+
+@script:python ruleone_org depends on org@
+i << r.i;
+j0 << ruleone_context.j0;
+j1 << ruleone_context. j1;
+@@
+
+msg = "WARNING: Function \"%s\" should have of_node_put() before return " % (i)
+coccilib.org.print_safe_todo(j0[0], msg)
+coccilib.org.print_link(j1[0], "")
+
+@script:python ruletwo_org depends on org@
+i << r.i;
+j0 << ruletwo_context.j0;
+j2 << ruletwo_context.j2;
+@@
+
+msg = "WARNING: Function \"%s\" should have of_node_put() before break " % (i)
+coccilib.org.print_safe_todo(j0[0], msg)
+coccilib.org.print_link(j2[0], "")
+
+@script:python rulethree_org depends on org@
+i << r.i;
+j0 << rulethree_context.j0;
+j3 << rulethree_context.j3;
+@@
+
+msg = "WARNING: Function \"%s\" should have of_node_put() before goto " % (i)
+coccilib.org.print_safe_todo(j0[0], msg)
+coccilib.org.print_link(j3[0], "")
+
+// ----------------------------------------------------------------------------
+
+@script:python ruleone_report depends on report@
+i << r.i;
+j0 << ruleone_context.j0;
+j1 << ruleone_context.j1;
+@@
+
+msg = "WARNING: Function \"%s\" should have of_node_put() before return around line %s." % (i, j1[0].line)
+coccilib.report.print_report(j0[0], msg)
+
+@script:python ruletwo_report depends on report@
+i << r.i;
+j0 << ruletwo_context.j0;
+j2 << ruletwo_context.j2;
+@@
+
+msg = "WARNING: Function \"%s\" should have of_node_put() before break around line %s." % (i,j2[0].line)
+coccilib.report.print_report(j0[0], msg)
+
+@script:python rulethree_report depends on report@
+i << r.i;
+j0 << rulethree_context.j0;
+j3 << rulethree_context.j3;
+@@
+
+msg = "WARNING: Function \"%s\" should have of_node_put() before goto around lines %s." % (i,j3[0].line)
+coccilib.report.print_report(j0[0], msg)
diff --git a/scripts/coccinelle/misc/array_size_dup.cocci b/scripts/coccinelle/misc/array_size_dup.cocci
new file mode 100644
index 0000000..fbc2ba1
--- /dev/null
+++ b/scripts/coccinelle/misc/array_size_dup.cocci
@@ -0,0 +1,209 @@
+// SPDX-License-Identifier: GPL-2.0-only
+///
+/// Check for array_size(), array3_size(), struct_size() duplicates.
+/// These patterns are detected:
+///  1. An opencoded expression is used before array_size() to compute the same size
+///  2. An opencoded expression is used after array_size() to compute the same size
+/// From security point of view only first case is relevant. These functions
+/// perform arithmetic overflow check. Thus, if we use an opencoded expression
+/// before a call to the *_size() function we can miss an overflow.
+///
+// Confidence: High
+// Copyright: (C) 2020 Denis Efremov ISPRAS
+// Options: --no-includes --include-headers --no-loops
+
+virtual context
+virtual report
+virtual org
+
+@as@
+expression E1, E2;
+@@
+
+array_size(E1, E2)
+
+@as_next@
+expression subE1 <= as.E1;
+expression subE2 <= as.E2;
+expression as.E1, as.E2, E3;
+assignment operator aop;
+position p1, p2;
+@@
+
+* E1 * E2@p1
+  ... when != \(subE1\|subE2\) aop E3
+      when != &\(subE1\|subE2\)
+* array_size(E1, E2)@p2
+
+@script:python depends on report@
+p1 << as_next.p1;
+p2 << as_next.p2;
+@@
+
+msg = "WARNING: array_size is used later (line %s) to compute the same size" % (p2[0].line)
+coccilib.report.print_report(p1[0], msg)
+
+@script:python depends on org@
+p1 << as_next.p1;
+p2 << as_next.p2;
+@@
+
+msg = "WARNING: array_size is used later (line %s) to compute the same size" % (p2[0].line)
+coccilib.org.print_todo(p1[0], msg)
+
+@as_prev@
+expression subE1 <= as.E1;
+expression subE2 <= as.E2;
+expression as.E1, as.E2, E3;
+assignment operator aop;
+position p1, p2;
+@@
+
+* array_size(E1, E2)@p1
+  ... when != \(subE1\|subE2\) aop E3
+      when != &\(subE1\|subE2\)
+* E1 * E2@p2
+
+@script:python depends on report@
+p1 << as_prev.p1;
+p2 << as_prev.p2;
+@@
+
+msg = "WARNING: array_size is already used (line %s) to compute the same size" % (p1[0].line)
+coccilib.report.print_report(p2[0], msg)
+
+@script:python depends on org@
+p1 << as_prev.p1;
+p2 << as_prev.p2;
+@@
+
+msg = "WARNING: array_size is already used (line %s) to compute the same size" % (p1[0].line)
+coccilib.org.print_todo(p2[0], msg)
+
+@as3@
+expression E1, E2, E3;
+@@
+
+array3_size(E1, E2, E3)
+
+@as3_next@
+expression subE1 <= as3.E1;
+expression subE2 <= as3.E2;
+expression subE3 <= as3.E3;
+expression as3.E1, as3.E2, as3.E3, E4;
+assignment operator aop;
+position p1, p2;
+@@
+
+* E1 * E2 * E3@p1
+  ... when != \(subE1\|subE2\|subE3\) aop E4
+      when != &\(subE1\|subE2\|subE3\)
+* array3_size(E1, E2, E3)@p2
+
+@script:python depends on report@
+p1 << as3_next.p1;
+p2 << as3_next.p2;
+@@
+
+msg = "WARNING: array3_size is used later (line %s) to compute the same size" % (p2[0].line)
+coccilib.report.print_report(p1[0], msg)
+
+@script:python depends on org@
+p1 << as3_next.p1;
+p2 << as3_next.p2;
+@@
+
+msg = "WARNING: array3_size is used later (line %s) to compute the same size" % (p2[0].line)
+coccilib.org.print_todo(p1[0], msg)
+
+@as3_prev@
+expression subE1 <= as3.E1;
+expression subE2 <= as3.E2;
+expression subE3 <= as3.E3;
+expression as3.E1, as3.E2, as3.E3, E4;
+assignment operator aop;
+position p1, p2;
+@@
+
+* array3_size(E1, E2, E3)@p1
+  ... when != \(subE1\|subE2\|subE3\) aop E4
+      when != &\(subE1\|subE2\|subE3\)
+* E1 * E2 * E3@p2
+
+@script:python depends on report@
+p1 << as3_prev.p1;
+p2 << as3_prev.p2;
+@@
+
+msg = "WARNING: array3_size is already used (line %s) to compute the same size" % (p1[0].line)
+coccilib.report.print_report(p2[0], msg)
+
+@script:python depends on org@
+p1 << as3_prev.p1;
+p2 << as3_prev.p2;
+@@
+
+msg = "WARNING: array3_size is already used (line %s) to compute the same size" % (p1[0].line)
+coccilib.org.print_todo(p2[0], msg)
+
+@ss@
+expression E1, E2, E3;
+@@
+
+struct_size(E1, E2, E3)
+
+@ss_next@
+expression subE3 <= ss.E3;
+expression ss.E1, ss.E2, ss.E3, E4;
+assignment operator aop;
+position p1, p2;
+@@
+
+* E1 * E2 + E3@p1
+  ... when != subE3 aop E4
+      when != &subE3
+* struct_size(E1, E2, E3)@p2
+
+@script:python depends on report@
+p1 << ss_next.p1;
+p2 << ss_next.p2;
+@@
+
+msg = "WARNING: struct_size is used later (line %s) to compute the same size" % (p2[0].line)
+coccilib.report.print_report(p1[0], msg)
+
+@script:python depends on org@
+p1 << ss_next.p1;
+p2 << ss_next.p2;
+@@
+
+msg = "WARNING: struct_size is used later (line %s) to compute the same size" % (p2[0].line)
+coccilib.org.print_todo(p1[0], msg)
+
+@ss_prev@
+expression subE3 <= ss.E3;
+expression ss.E1, ss.E2, ss.E3, E4;
+assignment operator aop;
+position p1, p2;
+@@
+
+* struct_size(E1, E2, E3)@p1
+  ... when != subE3 aop E4
+      when != &subE3
+* E1 * E2 + E3@p2
+
+@script:python depends on report@
+p1 << ss_prev.p1;
+p2 << ss_prev.p2;
+@@
+
+msg = "WARNING: struct_size is already used (line %s) to compute the same size" % (p1[0].line)
+coccilib.report.print_report(p2[0], msg)
+
+@script:python depends on org@
+p1 << ss_prev.p1;
+p2 << ss_prev.p2;
+@@
+
+msg = "WARNING: struct_size is already used (line %s) to compute the same size" % (p1[0].line)
+coccilib.org.print_todo(p2[0], msg)
diff --git a/scripts/coccinelle/misc/excluded_middle.cocci b/scripts/coccinelle/misc/excluded_middle.cocci
new file mode 100644
index 0000000..ab28393
--- /dev/null
+++ b/scripts/coccinelle/misc/excluded_middle.cocci
@@ -0,0 +1,39 @@
+// SPDX-License-Identifier: GPL-2.0-only
+///
+/// Condition !A || A && B is equivalent to !A || B.
+///
+// Confidence: High
+// Copyright: (C) 2020 Denis Efremov ISPRAS
+// Options: --no-includes --include-headers
+
+virtual patch
+virtual context
+virtual org
+virtual report
+
+@r depends on !patch@
+expression A, B;
+position p;
+@@
+
+* !A || (A &&@p B)
+
+@depends on patch@
+expression A, B;
+@@
+
+  !A ||
+-       (A && B)
++       B
+
+@script:python depends on report@
+p << r.p;
+@@
+
+coccilib.report.print_report(p[0], "WARNING !A || A && B is equivalent to !A || B")
+
+@script:python depends on org@
+p << r.p;
+@@
+
+coccilib.org.print_todo(p[0], "WARNING !A || A && B is equivalent to !A || B")
diff --git a/scripts/coccinelle/misc/flexible_array.cocci b/scripts/coccinelle/misc/flexible_array.cocci
new file mode 100644
index 0000000..947fbaf
--- /dev/null
+++ b/scripts/coccinelle/misc/flexible_array.cocci
@@ -0,0 +1,88 @@
+// SPDX-License-Identifier: GPL-2.0-only
+///
+/// Zero-length and one-element arrays are deprecated, see
+/// Documentation/process/deprecated.rst
+/// Flexible-array members should be used instead.
+///
+//
+// Confidence: High
+// Copyright: (C) 2020 Denis Efremov ISPRAS.
+// Comments:
+// Options: --no-includes --include-headers
+
+virtual context
+virtual report
+virtual org
+virtual patch
+
+@initialize:python@
+@@
+def relevant(positions):
+    for p in positions:
+        if "uapi" in p.file:
+             return False
+    return True
+
+@r depends on !patch@
+identifier name, array;
+type T;
+position p : script:python() { relevant(p) };
+@@
+
+(
+  struct name {
+    ...
+*   T array@p[\(0\|1\)];
+  };
+|
+  struct {
+    ...
+*   T array@p[\(0\|1\)];
+  };
+|
+  union name {
+    ...
+*   T array@p[\(0\|1\)];
+  };
+|
+  union {
+    ...
+*   T array@p[\(0\|1\)];
+  };
+)
+
+@depends on patch@
+identifier name, array;
+type T;
+position p : script:python() { relevant(p) };
+@@
+
+(
+  struct name {
+    ...
+    T array@p[
+-       0
+    ];
+  };
+|
+  struct {
+    ...
+    T array@p[
+-       0
+    ];
+  };
+)
+
+@script: python depends on report@
+p << r.p;
+@@
+
+msg = "WARNING use flexible-array member instead (https://www.kernel.org/doc/html/latest/process/deprecated.html#zero-length-and-one-element-arrays)"
+coccilib.report.print_report(p[0], msg)
+
+@script: python depends on org@
+p << r.p;
+@@
+
+msg = "WARNING use flexible-array member instead (https://www.kernel.org/doc/html/latest/process/deprecated.html#zero-length-and-one-element-arrays)"
+coccilib.org.print_todo(p[0], msg)
diff --git a/scripts/coccinelle/misc/newline_in_nl_msg.cocci b/scripts/coccinelle/misc/newline_in_nl_msg.cocci
new file mode 100644
index 0000000..c175886
--- /dev/null
+++ b/scripts/coccinelle/misc/newline_in_nl_msg.cocci
@@ -0,0 +1,75 @@
+// SPDX-License-Identifier: GPL-2.0-only
+///
+/// Catch strings ending in newline with GENL_SET_ERR_MSG, NL_SET_ERR_MSG,
+/// NL_SET_ERR_MSG_MOD.
+///
+// Confidence: Very High
+// Copyright: (C) 2020 Intel Corporation
+// URL: http://coccinelle.lip6.fr/
+// Options: --no-includes --include-headers
+
+virtual context
+virtual org
+virtual report
+
+@r depends on context || org || report@
+expression e;
+constant m;
+position p;
+@@
+  \(GENL_SET_ERR_MSG\|NL_SET_ERR_MSG\|NL_SET_ERR_MSG_MOD\)(e,m@p)
+
+@script:python@
+m << r.m;
+@@
+
+if not m.endswith("\\n\""):
+	cocci.include_match(False)
+
+@r1 depends on r@
+identifier fname;
+expression r.e;
+constant r.m;
+position r.p;
+@@
+  fname(e,m@p)
+
+//----------------------------------------------------------
+//  For context mode
+//----------------------------------------------------------
+
+@depends on context && r@
+identifier r1.fname;
+expression r.e;
+constant r.m;
+@@
+* fname(e,m)
+
+//----------------------------------------------------------
+//  For org mode
+//----------------------------------------------------------
+
+@script:python depends on org@
+fname << r1.fname;
+m << r.m;
+p << r.p;
+@@
+
+if m.endswith("\\n\""):
+	msg="WARNING avoid newline at end of message in %s" % (fname)
+	msg_safe=msg.replace("[","@(").replace("]",")")
+	coccilib.org.print_todo(p[0], msg_safe)
+
+//----------------------------------------------------------
+//  For report mode
+//----------------------------------------------------------
+
+@script:python depends on report@
+fname << r1.fname;
+m << r.m;
+p << r.p;
+@@
+
+if m.endswith("\\n\""):
+	msg="WARNING avoid newline at end of message in %s" % (fname)
+	coccilib.report.print_report(p[0], msg)
diff --git a/scripts/coccinelle/misc/uninitialized_var.cocci b/scripts/coccinelle/misc/uninitialized_var.cocci
new file mode 100644
index 0000000..8fa845c
--- /dev/null
+++ b/scripts/coccinelle/misc/uninitialized_var.cocci
@@ -0,0 +1,51 @@
+// SPDX-License-Identifier: GPL-2.0-only
+///
+/// Please, don't reintroduce uninitialized_var().
+/// From Documentation/process/deprecated.rst:
+///  For any compiler warnings about uninitialized variables, just add
+///  an initializer. Using warning-silencing tricks is dangerous as it
+///  papers over real bugs (or can in the future), and suppresses unrelated
+///  compiler warnings (e.g. "unused variable"). If the compiler thinks it
+///  is uninitialized, either simply initialize the variable or make compiler
+///  changes. Keep in mind that in most cases, if an initialization is
+///  obviously redundant, the compiler's dead-store elimination pass will make
+///  sure there are no needless variable writes.
+///
+// Confidence: High
+// Copyright: (C) 2020 Denis Efremov ISPRAS
+// Options: --no-includes --include-headers
+//
+
+virtual context
+virtual report
+virtual org
+
+@r@
+identifier var;
+type T;
+position p;
+@@
+
+(
+* T var =@p var;
+|
+* T var =@p *(&(var));
+|
+* var =@p var
+|
+* var =@p *(&(var))
+)
+
+@script:python depends on report@
+p << r.p;
+@@
+
+coccilib.report.print_report(p[0],
+  "WARNING this kind of initialization is deprecated (https://www.kernel.org/doc/html/latest/process/deprecated.html#uninitialized-var)")
+
+@script:python depends on org@
+p << r.p;
+@@
+
+coccilib.org.print_todo(p[0],
+  "WARNING this kind of initialization is deprecated (https://www.kernel.org/doc/html/latest/process/deprecated.html#uninitialized-var)")
diff --git a/scripts/conmakehash.c b/scripts/conmakehash.c
deleted file mode 100644
index cddd789..0000000
--- a/scripts/conmakehash.c
+++ /dev/null
@@ -1,290 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-or-later
-/*
- * conmakehash.c
- *
- * Create arrays for initializing the kernel folded tables (using a hash
- * table turned out to be to limiting...)  Unfortunately we can't simply
- * preinitialize the tables at compile time since kfree() cannot accept
- * memory not allocated by kmalloc(), and doing our own memory management
- * just for this seems like massive overkill.
- *
- * Copyright (C) 1995-1997 H. Peter Anvin
- */
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <sysexits.h>
-#include <string.h>
-#include <ctype.h>
-
-#define MAX_FONTLEN 256
-
-typedef unsigned short unicode;
-
-static void usage(char *argv0)
-{
-  fprintf(stderr, "Usage: \n"
-         "        %s chartable [hashsize] [hashstep] [maxhashlevel]\n", argv0);
-  exit(EX_USAGE);
-}
-
-static int getunicode(char **p0)
-{
-  char *p = *p0;
-
-  while (*p == ' ' || *p == '\t')
-    p++;
-  if (*p != 'U' || p[1] != '+' ||
-      !isxdigit(p[2]) || !isxdigit(p[3]) || !isxdigit(p[4]) ||
-      !isxdigit(p[5]) || isxdigit(p[6]))
-    return -1;
-  *p0 = p+6;
-  return strtol(p+2,0,16);
-}
-
-unicode unitable[MAX_FONTLEN][255];
-				/* Massive overkill, but who cares? */
-int unicount[MAX_FONTLEN];
-
-static void addpair(int fp, int un)
-{
-  int i;
-
-  if ( un <= 0xfffe )
-    {
-      /* Check it isn't a duplicate */
-
-      for ( i = 0 ; i < unicount[fp] ; i++ )
-	if ( unitable[fp][i] == un )
-	  return;
-
-      /* Add to list */
-
-      if ( unicount[fp] > 254 )
-	{
-	  fprintf(stderr, "ERROR: Only 255 unicodes/glyph permitted!\n");
-	  exit(EX_DATAERR);
-	}
-
-      unitable[fp][unicount[fp]] = un;
-      unicount[fp]++;
-    }
-
-  /* otherwise: ignore */
-}
-
-int main(int argc, char *argv[])
-{
-  FILE *ctbl;
-  char *tblname;
-  char buffer[65536];
-  int fontlen;
-  int i, nuni, nent;
-  int fp0, fp1, un0, un1;
-  char *p, *p1;
-
-  if ( argc < 2 || argc > 5 )
-    usage(argv[0]);
-
-  if ( !strcmp(argv[1],"-") )
-    {
-      ctbl = stdin;
-      tblname = "stdin";
-    }
-  else
-    {
-      ctbl = fopen(tblname = argv[1], "r");
-      if ( !ctbl )
-	{
-	  perror(tblname);
-	  exit(EX_NOINPUT);
-	}
-    }
-
-  /* For now we assume the default font is always 256 characters. */
-  fontlen = 256;
-
-  /* Initialize table */
-
-  for ( i = 0 ; i < fontlen ; i++ )
-    unicount[i] = 0;
-
-  /* Now we come to the tricky part.  Parse the input table. */
-
-  while ( fgets(buffer, sizeof(buffer), ctbl) != NULL )
-    {
-      if ( (p = strchr(buffer, '\n')) != NULL )
-	*p = '\0';
-      else
-	fprintf(stderr, "%s: Warning: line too long\n", tblname);
-
-      p = buffer;
-
-/*
- * Syntax accepted:
- *	<fontpos>	<unicode> <unicode> ...
- *	<range>		idem
- *	<range>		<unicode range>
- *
- * where <range> ::= <fontpos>-<fontpos>
- * and <unicode> ::= U+<h><h><h><h>
- * and <h> ::= <hexadecimal digit>
- */
-
-      while (*p == ' ' || *p == '\t')
-	p++;
-      if (!*p || *p == '#')
-	continue;	/* skip comment or blank line */
-
-      fp0 = strtol(p, &p1, 0);
-      if (p1 == p)
-	{
-	  fprintf(stderr, "Bad input line: %s\n", buffer);
-	  exit(EX_DATAERR);
-        }
-      p = p1;
-
-      while (*p == ' ' || *p == '\t')
-	p++;
-      if (*p == '-')
-	{
-	  p++;
-	  fp1 = strtol(p, &p1, 0);
-	  if (p1 == p)
-	    {
-	      fprintf(stderr, "Bad input line: %s\n", buffer);
-	      exit(EX_DATAERR);
-	    }
-	  p = p1;
-        }
-      else
-	fp1 = 0;
-
-      if ( fp0 < 0 || fp0 >= fontlen )
-	{
-	    fprintf(stderr,
-		    "%s: Glyph number (0x%x) larger than font length\n",
-		    tblname, fp0);
-	    exit(EX_DATAERR);
-	}
-      if ( fp1 && (fp1 < fp0 || fp1 >= fontlen) )
-	{
-	    fprintf(stderr,
-		    "%s: Bad end of range (0x%x)\n",
-		    tblname, fp1);
-	    exit(EX_DATAERR);
-	}
-
-      if (fp1)
-	{
-	  /* we have a range; expect the word "idem" or a Unicode range of the
-	     same length */
-	  while (*p == ' ' || *p == '\t')
-	    p++;
-	  if (!strncmp(p, "idem", 4))
-	    {
-	      for (i=fp0; i<=fp1; i++)
-		addpair(i,i);
-	      p += 4;
-	    }
-	  else
-	    {
-	      un0 = getunicode(&p);
-	      while (*p == ' ' || *p == '\t')
-		p++;
-	      if (*p != '-')
-		{
-		  fprintf(stderr,
-"%s: Corresponding to a range of font positions, there should be a Unicode range\n",
-			  tblname);
-		  exit(EX_DATAERR);
-	        }
-	      p++;
-	      un1 = getunicode(&p);
-	      if (un0 < 0 || un1 < 0)
-		{
-		  fprintf(stderr,
-"%s: Bad Unicode range corresponding to font position range 0x%x-0x%x\n",
-			  tblname, fp0, fp1);
-		  exit(EX_DATAERR);
-	        }
-	      if (un1 - un0 != fp1 - fp0)
-		{
-		  fprintf(stderr,
-"%s: Unicode range U+%x-U+%x not of the same length as font position range 0x%x-0x%x\n",
-			  tblname, un0, un1, fp0, fp1);
-		  exit(EX_DATAERR);
-	        }
-	      for(i=fp0; i<=fp1; i++)
-		addpair(i,un0-fp0+i);
-	    }
-        }
-      else
-	{
-	    /* no range; expect a list of unicode values for a single font position */
-
-	    while ( (un0 = getunicode(&p)) >= 0 )
-	      addpair(fp0, un0);
-	}
-      while (*p == ' ' || *p == '\t')
-	p++;
-      if (*p && *p != '#')
-	fprintf(stderr, "%s: trailing junk (%s) ignored\n", tblname, p);
-    }
-
-  /* Okay, we hit EOF, now output hash table */
-
-  fclose(ctbl);
-
-
-  /* Compute total size of Unicode list */
-  nuni = 0;
-  for ( i = 0 ; i < fontlen ; i++ )
-    nuni += unicount[i];
-
-  printf("\
-/*\n\
- * Do not edit this file; it was automatically generated by\n\
- *\n\
- * conmakehash %s > [this file]\n\
- *\n\
- */\n\
-\n\
-#include <linux/types.h>\n\
-\n\
-u8 dfont_unicount[%d] = \n\
-{\n\t", argv[1], fontlen);
-
-  for ( i = 0 ; i < fontlen ; i++ )
-    {
-      printf("%3d", unicount[i]);
-      if ( i == fontlen-1 )
-        printf("\n};\n");
-      else if ( i % 8 == 7 )
-        printf(",\n\t");
-      else
-        printf(", ");
-    }
-
-  printf("\nu16 dfont_unitable[%d] = \n{\n\t", nuni);
-
-  fp0 = 0;
-  nent = 0;
-  for ( i = 0 ; i < nuni ; i++ )
-    {
-      while ( nent >= unicount[fp0] )
-	{
-	  fp0++;
-	  nent = 0;
-	}
-      printf("0x%04x", unitable[fp0][nent++]);
-      if ( i == nuni-1 )
-         printf("\n};\n");
-       else if ( i % 8 == 7 )
-         printf(",\n\t");
-       else
-         printf(", ");
-    }
-
-  exit(EX_OK);
-}
diff --git a/scripts/const_structs.checkpatch b/scripts/const_structs.checkpatch
index ac5f126..1aae4f4 100644
--- a/scripts/const_structs.checkpatch
+++ b/scripts/const_structs.checkpatch
@@ -39,11 +39,15 @@
 nvkm_device_chip
 of_device_id
 pci_raw_ops
+phy_ops
+pinctrl_ops
+pinmux_ops
 pipe_buf_operations
 platform_hibernation_ops
 platform_suspend_ops
 proto_ops
 regmap_access_table
+regulator_ops
 rpc_pipe_ops
 rtc_class_ops
 sd_desc
diff --git a/scripts/decode_stacktrace.sh b/scripts/decode_stacktrace.sh
index fe7076f..9039834 100755
--- a/scripts/decode_stacktrace.sh
+++ b/scripts/decode_stacktrace.sh
@@ -3,18 +3,68 @@
 # (c) 2014, Sasha Levin <sasha.levin@oracle.com>
 #set -x
 
-if [[ $# < 2 ]]; then
+if [[ $# < 1 ]]; then
 	echo "Usage:"
-	echo "	$0 [vmlinux] [base path] [modules path]"
+	echo "	$0 -r <release> | <vmlinux> [base path] [modules path]"
 	exit 1
 fi
 
-vmlinux=$1
-basepath=$2
-modpath=$3
+if [[ $1 == "-r" ]] ; then
+	vmlinux=""
+	basepath="auto"
+	modpath=""
+	release=$2
+
+	for fn in {,/usr/lib/debug}/boot/vmlinux-$release{,.debug} /lib/modules/$release{,/build}/vmlinux ; do
+		if [ -e "$fn" ] ; then
+			vmlinux=$fn
+			break
+		fi
+	done
+
+	if [[ $vmlinux == "" ]] ; then
+		echo "ERROR! vmlinux image for release $release is not found" >&2
+		exit 2
+	fi
+else
+	vmlinux=$1
+	basepath=${2-auto}
+	modpath=$3
+	release=""
+fi
+
 declare -A cache
 declare -A modcache
 
+find_module() {
+	if [[ "$modpath" != "" ]] ; then
+		for fn in $(find "$modpath" -name "${module//_/[-_]}.ko*") ; do
+			if readelf -WS "$fn" | grep -qwF .debug_line ; then
+				echo $fn
+				return
+			fi
+		done
+		return 1
+	fi
+
+	modpath=$(dirname "$vmlinux")
+	find_module && return
+
+	if [[ $release == "" ]] ; then
+		release=$(gdb -ex 'print init_uts_ns.name.release' -ex 'quit' -quiet -batch "$vmlinux" | sed -n 's/\$1 = "\(.*\)".*/\1/p')
+	fi
+
+	for dn in {/usr/lib/debug,}/lib/modules/$release ; do
+		if [ -e "$dn" ] ; then
+			modpath="$dn"
+			find_module && return
+		fi
+	done
+
+	modpath=""
+	return 1
+}
+
 parse_symbol() {
 	# The structure of symbol at this point is:
 	#   ([name]+[offset]/[total length])
@@ -27,9 +77,11 @@
 	elif [[ "${modcache[$module]+isset}" == "isset" ]]; then
 		local objfile=${modcache[$module]}
 	else
-		[[ $modpath == "" ]] && return
-		local objfile=$(find "$modpath" -name "${module//_/[-_]}.ko*" -print -quit)
-		[[ $objfile == "" ]] && return
+		local objfile=$(find_module)
+		if [[ $objfile == "" ]] ; then
+			echo "WARNING! Modules path isn't set, but is needed to parse this symbol" >&2
+			return
+		fi
 		modcache[$module]=$objfile
 	fi
 
@@ -53,7 +105,11 @@
 	if [[ "${cache[$module,$name]+isset}" == "isset" ]]; then
 		local base_addr=${cache[$module,$name]}
 	else
-		local base_addr=$(nm "$objfile" | grep -i ' t ' | awk "/ $name\$/ {print \$1}" | head -n1)
+		local base_addr=$(nm "$objfile" | awk '$3 == "'$name'" && ($2 == "t" || $2 == "T") {print $1; exit}')
+		if [[ $base_addr == "" ]] ; then
+			# address not found
+			return
+		fi
 		cache[$module,$name]="$base_addr"
 	fi
 	# Let's start doing the math to get the exact address into the
@@ -145,6 +201,14 @@
 	echo "${words[@]}" "$symbol $module"
 }
 
+if [[ $basepath == "auto" ]] ; then
+	module=""
+	symbol="kernel_init+0x0/0x0"
+	parse_symbol
+	basepath=${symbol#kernel_init (}
+	basepath=${basepath%/init/main.c:*)}
+fi
+
 while read line; do
 	# Let's see if we have an address in the line
 	if [[ $line =~ \[\<([^]]+)\>\] ]] ||
diff --git a/scripts/decodecode b/scripts/decodecode
index fbdb325..31d884e 100755
--- a/scripts/decodecode
+++ b/scripts/decodecode
@@ -6,6 +6,7 @@
 # options: set env. variable AFLAGS=options to pass options to "as";
 # e.g., to decode an i386 oops on an x86_64 system, use:
 # AFLAGS=--32 decodecode < 386.oops
+# PC=hex - the PC (program counter) the oops points to
 
 cleanup() {
 	rm -f $T $T.s $T.o $T.oo $T.aa $T.dis
@@ -67,15 +68,19 @@
     esac
 fi
 
+# Params: (tmp_file, pc_sub)
 disas() {
-	${CROSS_COMPILE}as $AFLAGS -o $1.o $1.s > /dev/null 2>&1
+	t=$1
+	pc_sub=$2
+
+	${CROSS_COMPILE}as $AFLAGS -o $t.o $t.s > /dev/null 2>&1
 
 	if [ "$ARCH" = "arm" ]; then
 		if [ $width -eq 2 ]; then
 			OBJDUMPFLAGS="-M force-thumb"
 		fi
 
-		${CROSS_COMPILE}strip $1.o
+		${CROSS_COMPILE}strip $t.o
 	fi
 
 	if [ "$ARCH" = "arm64" ]; then
@@ -83,11 +88,18 @@
 			type=inst
 		fi
 
-		${CROSS_COMPILE}strip $1.o
+		${CROSS_COMPILE}strip $t.o
 	fi
 
-	${CROSS_COMPILE}objdump $OBJDUMPFLAGS -S $1.o | \
-		grep -v "/tmp\|Disassembly\|\.text\|^$" > $1.dis 2>&1
+	if [ $pc_sub -ne 0 ]; then
+		if [ $PC ]; then
+			adj_vma=$(( $PC - $pc_sub ))
+			OBJDUMPFLAGS="$OBJDUMPFLAGS --adjust-vma=$adj_vma"
+		fi
+	fi
+
+	${CROSS_COMPILE}objdump $OBJDUMPFLAGS -S $t.o | \
+		grep -v "/tmp\|Disassembly\|\.text\|^$" > $t.dis 2>&1
 }
 
 marker=`expr index "$code" "\<"`
@@ -95,14 +107,17 @@
 	marker=`expr index "$code" "\("`
 fi
 
+
 touch $T.oo
 if [ $marker -ne 0 ]; then
+	# 2 opcode bytes and a single space
+	pc_sub=$(( $marker / 3 ))
 	echo All code >> $T.oo
 	echo ======== >> $T.oo
 	beforemark=`echo "$code"`
 	echo -n "	.$type 0x" > $T.s
 	echo $beforemark | sed -e 's/ /,0x/g; s/[<>()]//g' >> $T.s
-	disas $T
+	disas $T $pc_sub
 	cat $T.dis >> $T.oo
 	rm -f $T.o $T.s $T.dis
 
@@ -114,7 +129,7 @@
 code=`echo $code | sed -e 's/ [<(]/ /;s/[>)] / /;s/ /,0x/g; s/[>)]$//'`
 echo -n "	.$type 0x" > $T.s
 echo $code >> $T.s
-disas $T
+disas $T 0
 cat $T.dis >> $T.aa
 
 # (lines of whole $T.oo) - (lines of $T.aa, i.e. "Code starting") + 3,
diff --git a/scripts/dev-needs.sh b/scripts/dev-needs.sh
new file mode 100755
index 0000000..454cc30
--- /dev/null
+++ b/scripts/dev-needs.sh
@@ -0,0 +1,315 @@
+#! /bin/sh
+# SPDX-License-Identifier: GPL-2.0
+# Copyright (c) 2020, Google LLC. All rights reserved.
+# Author: Saravana Kannan <saravanak@google.com>
+
+function help() {
+	cat << EOF
+Usage: $(basename $0) [-c|-d|-m|-f] [filter options] <list of devices>
+
+This script needs to be run on the target device once it has booted to a
+shell.
+
+The script takes as input a list of one or more device directories under
+/sys/devices and then lists the probe dependency chain (suppliers and
+parents) of these devices. It does a breadth first search of the dependency
+chain, so the last entry in the output is close to the root of the
+dependency chain.
+
+By default it lists the full path to the devices under /sys/devices.
+
+It also takes an optional modifier flag as the first parameter to change
+what information is listed in the output. If the requested information is
+not available, the device name is printed.
+
+  -c	lists the compatible string of the dependencies
+  -d	lists the driver name of the dependencies that have probed
+  -m	lists the module name of the dependencies that have a module
+  -f	list the firmware node path of the dependencies
+  -g	list the dependencies as edges and nodes for graphviz
+  -t	list the dependencies as edges for tsort
+
+The filter options provide a way to filter out some dependencies:
+  --allow-no-driver	By default dependencies that don't have a driver
+			attached are ignored. This is to avoid following
+			device links to "class" devices that are created
+			when the consumer probes (as in, not a probe
+			dependency). If you want to follow these links
+			anyway, use this flag.
+
+  --exclude-devlinks	Don't follow device links when tracking probe
+			dependencies.
+
+  --exclude-parents	Don't follow parent devices when tracking probe
+			dependencies.
+
+EOF
+}
+
+function dev_to_detail() {
+	local i=0
+	while [ $i -lt ${#OUT_LIST[@]} ]
+	do
+		local C=${OUT_LIST[i]}
+		local S=${OUT_LIST[i+1]}
+		local D="'$(detail_chosen $C $S)'"
+		if [ ! -z "$D" ]
+		then
+			# This weirdness is needed to work with toybox when
+			# using the -t option.
+			printf '%05u\t%s\n' ${i} "$D" | tr -d \'
+		fi
+		i=$((i+2))
+	done
+}
+
+function already_seen() {
+	local i=0
+	while [ $i -lt ${#OUT_LIST[@]} ]
+	do
+		if [ "$1" = "${OUT_LIST[$i]}" ]
+		then
+			# if-statement treats 0 (no-error) as true
+			return 0
+		fi
+		i=$(($i+2))
+	done
+
+	# if-statement treats 1 (error) as false
+	return 1
+}
+
+# Return 0 (no-error/true) if parent was added
+function add_parent() {
+
+	if [ ${ALLOW_PARENTS} -eq 0 ]
+	then
+		return 1
+	fi
+
+	local CON=$1
+	# $CON could be a symlink path. So, we need to find the real path and
+	# then go up one level to find the real parent.
+	local PARENT=$(realpath $CON/..)
+
+	while [ ! -e ${PARENT}/driver ]
+	do
+		if [ "$PARENT" = "/sys/devices" ]
+		then
+			return 1
+		fi
+		PARENT=$(realpath $PARENT/..)
+	done
+
+	CONSUMERS+=($PARENT)
+	OUT_LIST+=(${CON} ${PARENT})
+	return 0
+}
+
+# Return 0 (no-error/true) if one or more suppliers were added
+function add_suppliers() {
+	local CON=$1
+	local RET=1
+
+	if [ ${ALLOW_DEVLINKS} -eq 0 ]
+	then
+		return 1
+	fi
+
+	SUPPLIER_LINKS=$(ls -1d $CON/supplier:* 2>/dev/null)
+	for SL in $SUPPLIER_LINKS;
+	do
+		SYNC_STATE=$(cat $SL/sync_state_only)
+
+		# sync_state_only links are proxy dependencies.
+		# They can also have cycles. So, don't follow them.
+		if [ "$SYNC_STATE" != '0' ]
+		then
+			continue
+		fi
+
+		SUPPLIER=$(realpath $SL/supplier)
+
+		if [ ! -e $SUPPLIER/driver -a ${ALLOW_NO_DRIVER} -eq 0 ]
+		then
+			continue
+		fi
+
+		CONSUMERS+=($SUPPLIER)
+		OUT_LIST+=(${CON} ${SUPPLIER})
+		RET=0
+	done
+
+	return $RET
+}
+
+function detail_compat() {
+	f=$1/of_node/compatible
+	if [ -e $f ]
+	then
+		echo -n $(cat $f)
+	else
+		echo -n $1
+	fi
+}
+
+function detail_module() {
+	f=$1/driver/module
+	if [ -e $f ]
+	then
+		echo -n $(basename $(realpath $f))
+	else
+		echo -n $1
+	fi
+}
+
+function detail_driver() {
+	f=$1/driver
+	if [ -e $f ]
+	then
+		echo -n $(basename $(realpath $f))
+	else
+		echo -n $1
+	fi
+}
+
+function detail_fwnode() {
+	f=$1/firmware_node
+	if [ ! -e $f ]
+	then
+		f=$1/of_node
+	fi
+
+	if [ -e $f ]
+	then
+		echo -n $(realpath $f)
+	else
+		echo -n $1
+	fi
+}
+
+function detail_graphviz() {
+	if [ "$2" != "ROOT" ]
+	then
+		echo -n "\"$(basename $2)\"->\"$(basename $1)\""
+	else
+		echo -n "\"$(basename $1)\""
+	fi
+}
+
+function detail_tsort() {
+	echo -n "\"$2\" \"$1\""
+}
+
+function detail_device() { echo -n $1; }
+
+alias detail=detail_device
+ALLOW_NO_DRIVER=0
+ALLOW_DEVLINKS=1
+ALLOW_PARENTS=1
+
+while [ $# -gt 0 ]
+do
+	ARG=$1
+	case $ARG in
+		--help)
+			help
+			exit 0
+			;;
+		-c)
+			alias detail=detail_compat
+			;;
+		-m)
+			alias detail=detail_module
+			;;
+		-d)
+			alias detail=detail_driver
+			;;
+		-f)
+			alias detail=detail_fwnode
+			;;
+		-g)
+			alias detail=detail_graphviz
+			;;
+		-t)
+			alias detail=detail_tsort
+			;;
+		--allow-no-driver)
+			ALLOW_NO_DRIVER=1
+			;;
+		--exclude-devlinks)
+			ALLOW_DEVLINKS=0
+			;;
+		--exclude-parents)
+			ALLOW_PARENTS=0
+			;;
+		*)
+			# Stop at the first argument that's not an option.
+			break
+			;;
+	esac
+	shift
+done
+
+function detail_chosen() {
+	detail $1 $2
+}
+
+if [ $# -eq 0 ]
+then
+	help
+	exit 1
+fi
+
+CONSUMERS=($@)
+OUT_LIST=()
+
+# Do a breadth first, non-recursive tracking of suppliers. The parent is also
+# considered a "supplier" as a device can't probe without its parent.
+i=0
+while [ $i -lt ${#CONSUMERS[@]} ]
+do
+	CONSUMER=$(realpath ${CONSUMERS[$i]})
+	i=$(($i+1))
+
+	if already_seen ${CONSUMER}
+	then
+		continue
+	fi
+
+	# If this is not a device with a driver, we don't care about its
+	# suppliers.
+	if [ ! -e ${CONSUMER}/driver -a ${ALLOW_NO_DRIVER} -eq 0 ]
+	then
+		continue
+	fi
+
+	ROOT=1
+
+	# Add suppliers to CONSUMERS list and output the consumer details.
+	#
+	# We don't need to worry about a cycle in the dependency chain causing
+	# infinite loops. That's because the kernel doesn't allow cycles in
+	# device links unless it's a sync_state_only device link. And we ignore
+	# sync_state_only device links inside add_suppliers.
+	if add_suppliers ${CONSUMER}
+	then
+		ROOT=0
+	fi
+
+	if add_parent ${CONSUMER}
+	then
+		ROOT=0
+	fi
+
+	if [ $ROOT -eq 1 ]
+	then
+		OUT_LIST+=(${CONSUMER} "ROOT")
+	fi
+done
+
+# Can NOT combine sort and uniq using sort -suk2 because stable sort in toybox
+# isn't really stable.
+dev_to_detail | sort -k2 -k1 | uniq -f 1 | sort | cut -f2-
+
+exit 0
diff --git a/scripts/documentation-file-ref-check b/scripts/documentation-file-ref-check
index 7784c54..c71832b 100755
--- a/scripts/documentation-file-ref-check
+++ b/scripts/documentation-file-ref-check
@@ -12,7 +12,7 @@
 # to mention a past documentation file, for example, to give credits for
 # the original work.
 my %false_positives = (
-	"Documentation/scsi/scsi_mid_low_api.txt" => "Documentation/Configure.help",
+	"Documentation/scsi/scsi_mid_low_api.rst" => "Documentation/Configure.help",
 	"drivers/vhost/vhost.c" => "Documentation/virtual/lguest/lguest.c",
 );
 
@@ -25,7 +25,7 @@
 my $warn = 0;
 
 if (! -d ".git") {
-	printf "Warning: can't check if file exists, as this is not a git tree";
+	printf "Warning: can't check if file exists, as this is not a git tree\n";
 	exit 0;
 }
 
@@ -51,7 +51,9 @@
      or die "Failed to run git grep";
 while (<IN>) {
 	next if (!m,^([^:]+):.*\:doc\:\`([^\`]+)\`,);
+	next if (m,sphinx/,);
 
+	my $file = $1;
 	my $d = $1;
 	my $doc_ref = $2;
 
@@ -60,7 +62,12 @@
 	$d =~ s,(.*/).*,$1,;
 	$f =~ s,.*\<([^\>]+)\>,$1,;
 
-	$f ="$d$f.rst";
+	if ($f =~ m,^/,) {
+		$f = "$f.rst";
+		$f =~ s,^/,Documentation/,;
+	} else {
+		$f = "$d$f.rst";
+	}
 
 	next if (grep -e, glob("$f"));
 
@@ -69,7 +76,7 @@
 	}
 	$doc_fix++;
 
-	print STDERR "$f: :doc:`$doc_ref`\n";
+	print STDERR "$file: :doc:`$doc_ref`\n";
 }
 close IN;
 
diff --git a/scripts/dtc/.gitignore b/scripts/dtc/.gitignore
index 2e6e60d..b814e60 100644
--- a/scripts/dtc/.gitignore
+++ b/scripts/dtc/.gitignore
@@ -1 +1,2 @@
+# SPDX-License-Identifier: GPL-2.0-only
 dtc
diff --git a/scripts/dtc/Makefile b/scripts/dtc/Makefile
index c2dac99..4852bf4 100644
--- a/scripts/dtc/Makefile
+++ b/scripts/dtc/Makefile
@@ -1,8 +1,8 @@
 # SPDX-License-Identifier: GPL-2.0
 # scripts/dtc makefile
 
-hostprogs-$(CONFIG_DTC) := dtc
-always		:= $(hostprogs-y)
+hostprogs-always-$(CONFIG_DTC)		+= dtc
+hostprogs-always-$(CHECK_DT_BINDING)	+= dtc
 
 dtc-objs	:= dtc.o flattree.o fstree.o data.o livetree.o treesource.o \
 		   srcpos.o checks.o util.o
@@ -12,13 +12,16 @@
 HOST_EXTRACFLAGS += -I $(srctree)/$(src)/libfdt
 
 ifeq ($(shell pkg-config --exists yaml-0.1 2>/dev/null && echo yes),)
-ifneq ($(CHECK_DTBS),)
+ifneq ($(CHECK_DT_BINDING)$(CHECK_DTBS),)
 $(error dtc needs libyaml for DT schema validation support. \
 	Install the necessary libyaml development package.)
 endif
 HOST_EXTRACFLAGS += -DNO_YAML
 else
 dtc-objs	+= yamltree.o
+# To include <yaml.h> installed in a non-default path
+HOSTCFLAGS_yamltree.o := $(shell pkg-config --cflags yaml-0.1)
+# To link libyaml installed in a non-default path
 HOSTLDLIBS_dtc	:= $(shell pkg-config yaml-0.1 --libs)
 endif
 
diff --git a/scripts/dtc/Makefile.dtc b/scripts/dtc/Makefile.dtc
deleted file mode 100644
index 9c467b0..0000000
--- a/scripts/dtc/Makefile.dtc
+++ /dev/null
@@ -1,23 +0,0 @@
-# SPDX-License-Identifier: GPL-2.0-or-later
-# Makefile.dtc
-#
-# This is not a complete Makefile of itself.  Instead, it is designed to
-# be easily embeddable into other systems of Makefiles.
-#
-DTC_SRCS = \
-	checks.c \
-	data.c \
-	dtc.c \
-	flattree.c \
-	fstree.c \
-	livetree.c \
-	srcpos.c \
-	treesource.c \
-	util.c
-
-ifneq ($(NO_YAML),1)
-DTC_SRCS += yamltree.c
-endif
-
-DTC_GEN_SRCS = dtc-lexer.lex.c dtc-parser.tab.c
-DTC_OBJS = $(DTC_SRCS:%.c=%.o) $(DTC_GEN_SRCS:%.c=%.o)
diff --git a/scripts/dtc/checks.c b/scripts/dtc/checks.c
index d7986ee..17cb689 100644
--- a/scripts/dtc/checks.c
+++ b/scripts/dtc/checks.c
@@ -352,7 +352,7 @@
 			FAIL(c, dti, node, "node has a reg or ranges property, but no unit name");
 	} else {
 		if (unitname[0])
-			FAIL(c, dti, node, "node has a unit name, but no reg property");
+			FAIL(c, dti, node, "node has a unit name, but no reg or ranges property");
 	}
 }
 WARNING(unit_address_vs_reg, check_unit_address_vs_reg, NULL);
@@ -691,6 +691,11 @@
 		return;
 
 	for_each_property(node, prop) {
+		if (streq(prop->name, "phandle")
+		    || streq(prop->name, "linux,phandle")) {
+			continue;
+		}
+
 		if (!prop->val.val || !get_node_by_path(dti->dt, prop->val.val)) {
 			FAIL_PROP(c, dti, node, prop, "aliases property is not a valid node (%s)",
 				  prop->val.val);
@@ -760,13 +765,15 @@
 {
 	struct property *prop;
 	int c_addr_cells, p_addr_cells, c_size_cells, p_size_cells, entrylen;
+	const char *ranges = c->data;
 
-	prop = get_property(node, "ranges");
+	prop = get_property(node, ranges);
 	if (!prop)
 		return;
 
 	if (!node->parent) {
-		FAIL_PROP(c, dti, node, prop, "Root node has a \"ranges\" property");
+		FAIL_PROP(c, dti, node, prop, "Root node has a \"%s\" property",
+			  ranges);
 		return;
 	}
 
@@ -778,23 +785,24 @@
 
 	if (prop->val.len == 0) {
 		if (p_addr_cells != c_addr_cells)
-			FAIL_PROP(c, dti, node, prop, "empty \"ranges\" property but its "
+			FAIL_PROP(c, dti, node, prop, "empty \"%s\" property but its "
 				  "#address-cells (%d) differs from %s (%d)",
-				  c_addr_cells, node->parent->fullpath,
+				  ranges, c_addr_cells, node->parent->fullpath,
 				  p_addr_cells);
 		if (p_size_cells != c_size_cells)
-			FAIL_PROP(c, dti, node, prop, "empty \"ranges\" property but its "
+			FAIL_PROP(c, dti, node, prop, "empty \"%s\" property but its "
 				  "#size-cells (%d) differs from %s (%d)",
-				  c_size_cells, node->parent->fullpath,
+				  ranges, c_size_cells, node->parent->fullpath,
 				  p_size_cells);
 	} else if ((prop->val.len % entrylen) != 0) {
-		FAIL_PROP(c, dti, node, prop, "\"ranges\" property has invalid length (%d bytes) "
+		FAIL_PROP(c, dti, node, prop, "\"%s\" property has invalid length (%d bytes) "
 			  "(parent #address-cells == %d, child #address-cells == %d, "
-			  "#size-cells == %d)", prop->val.len,
+			  "#size-cells == %d)", ranges, prop->val.len,
 			  p_addr_cells, c_addr_cells, c_size_cells);
 	}
 }
-WARNING(ranges_format, check_ranges_format, NULL, &addr_size_cells);
+WARNING(ranges_format, check_ranges_format, "ranges", &addr_size_cells);
+WARNING(dma_ranges_format, check_ranges_format, "dma-ranges", &addr_size_cells);
 
 static const struct bus_type pci_bus = {
 	.name = "PCI",
@@ -883,10 +891,8 @@
 		return;
 
 	prop = get_property(node, "reg");
-	if (!prop) {
-		FAIL(c, dti, node, "missing PCI reg property");
+	if (!prop)
 		return;
-	}
 
 	cells = (cell_t *)prop->val.val;
 	if (cells[1] || cells[2])
@@ -1014,6 +1020,9 @@
 }
 WARNING(i2c_bus_bridge, check_i2c_bus_bridge, NULL, &addr_size_cells);
 
+#define I2C_OWN_SLAVE_ADDRESS	(1U << 30)
+#define I2C_TEN_BIT_ADDRESS	(1U << 31)
+
 static void check_i2c_bus_reg(struct check *c, struct dt_info *dti, struct node *node)
 {
 	struct property *prop;
@@ -1036,6 +1045,8 @@
 	}
 
 	reg = fdt32_to_cpu(*cells);
+	/* Ignore I2C_OWN_SLAVE_ADDRESS */
+	reg &= ~I2C_OWN_SLAVE_ADDRESS;
 	snprintf(unit_addr, sizeof(unit_addr), "%x", reg);
 	if (!streq(unitname, unit_addr))
 		FAIL(c, dti, node, "I2C bus unit address format error, expected \"%s\"",
@@ -1043,10 +1054,15 @@
 
 	for (len = prop->val.len; len > 0; len -= 4) {
 		reg = fdt32_to_cpu(*(cells++));
-		if (reg > 0x3ff)
+		/* Ignore I2C_OWN_SLAVE_ADDRESS */
+		reg &= ~I2C_OWN_SLAVE_ADDRESS;
+
+		if ((reg & I2C_TEN_BIT_ADDRESS) && ((reg & ~I2C_TEN_BIT_ADDRESS) > 0x3ff))
 			FAIL_PROP(c, dti, node, prop, "I2C address must be less than 10-bits, got \"0x%x\"",
 				  reg);
-
+		else if (reg > 0x7f)
+			FAIL_PROP(c, dti, node, prop, "I2C address must be less than 7-bits, got \"0x%x\". Set I2C_TEN_BIT_ADDRESS for 10 bit addresses or fix the property",
+				  reg);
 	}
 }
 WARNING(i2c_bus_reg, check_i2c_bus_reg, NULL, &reg_format, &i2c_bus_bridge);
@@ -1539,6 +1555,28 @@
 
 	return false;
 }
+
+static void check_interrupt_provider(struct check *c,
+				     struct dt_info *dti,
+				     struct node *node)
+{
+	struct property *prop;
+
+	if (!node_is_interrupt_provider(node))
+		return;
+
+	prop = get_property(node, "#interrupt-cells");
+	if (!prop)
+		FAIL(c, dti, node,
+		     "Missing #interrupt-cells in interrupt provider");
+
+	prop = get_property(node, "#address-cells");
+	if (!prop)
+		FAIL(c, dti, node,
+		     "Missing #address-cells in interrupt provider");
+}
+WARNING(interrupt_provider, check_interrupt_provider, NULL);
+
 static void check_interrupts_property(struct check *c,
 				      struct dt_info *dti,
 				      struct node *node)
@@ -1596,7 +1634,7 @@
 
 	prop = get_property(irq_node, "#interrupt-cells");
 	if (!prop) {
-		FAIL(c, dti, irq_node, "Missing #interrupt-cells in interrupt-parent");
+		/* We warn about that already in another test. */
 		return;
 	}
 
@@ -1775,7 +1813,7 @@
 	&property_name_chars_strict,
 	&node_name_chars_strict,
 
-	&addr_size_cells, &reg_format, &ranges_format,
+	&addr_size_cells, &reg_format, &ranges_format, &dma_ranges_format,
 
 	&unit_address_vs_reg,
 	&unit_address_format,
@@ -1820,6 +1858,7 @@
 	&deprecated_gpio_property,
 	&gpios_property,
 	&interrupts_property,
+	&interrupt_provider,
 
 	&alias_paths,
 
diff --git a/scripts/dtc/dtc-parser.y b/scripts/dtc/dtc-parser.y
index 2ed4dc1..a0316a3 100644
--- a/scripts/dtc/dtc-parser.y
+++ b/scripts/dtc/dtc-parser.y
@@ -2,6 +2,8 @@
 /*
  * (C) Copyright David Gibson <dwg@au1.ibm.com>, IBM Corporation.  2005.
  */
+%locations
+
 %{
 #include <stdio.h>
 #include <inttypes.h>
@@ -17,6 +19,8 @@
 		treesource_error = true; \
 	} while (0)
 
+#define YYERROR_CALL(msg) yyerror(msg)
+
 extern struct dt_info *parser_output;
 extern bool treesource_error;
 %}
@@ -472,8 +476,8 @@
 	;
 
 integer_shift:
-	  integer_shift DT_LSHIFT integer_add { $$ = $1 << $3; }
-	| integer_shift DT_RSHIFT integer_add { $$ = $1 >> $3; }
+	  integer_shift DT_LSHIFT integer_add { $$ = ($3 < 64) ? ($1 << $3) : 0; }
+	| integer_shift DT_RSHIFT integer_add { $$ = ($3 < 64) ? ($1 >> $3) : 0; }
 	| integer_add
 	;
 
diff --git a/scripts/dtc/dtc.h b/scripts/dtc/dtc.h
index 6e74ece..a08f415 100644
--- a/scripts/dtc/dtc.h
+++ b/scripts/dtc/dtc.h
@@ -51,6 +51,37 @@
 
 typedef uint32_t cell_t;
 
+static inline uint16_t dtb_ld16(const void *p)
+{
+	const uint8_t *bp = (const uint8_t *)p;
+
+	return ((uint16_t)bp[0] << 8)
+		| bp[1];
+}
+
+static inline uint32_t dtb_ld32(const void *p)
+{
+	const uint8_t *bp = (const uint8_t *)p;
+
+	return ((uint32_t)bp[0] << 24)
+		| ((uint32_t)bp[1] << 16)
+		| ((uint32_t)bp[2] << 8)
+		| bp[3];
+}
+
+static inline uint64_t dtb_ld64(const void *p)
+{
+	const uint8_t *bp = (const uint8_t *)p;
+
+	return ((uint64_t)bp[0] << 56)
+		| ((uint64_t)bp[1] << 48)
+		| ((uint64_t)bp[2] << 40)
+		| ((uint64_t)bp[3] << 32)
+		| ((uint64_t)bp[4] << 24)
+		| ((uint64_t)bp[5] << 16)
+		| ((uint64_t)bp[6] << 8)
+		| bp[7];
+}
 
 #define streq(a, b)	(strcmp((a), (b)) == 0)
 #define strstarts(s, prefix)	(strncmp((s), (prefix), strlen(prefix)) == 0)
diff --git a/scripts/dtc/dtx_diff b/scripts/dtc/dtx_diff
index 00fd473..f2bbde4 100755
--- a/scripts/dtc/dtx_diff
+++ b/scripts/dtc/dtx_diff
@@ -20,6 +20,8 @@
 
 
       --annotate    synonym for -T
+      --color       synonym for -c (requires diff with --color support)
+       -c           enable colored output
        -f           print full dts in diff (--unified=99999)
        -h           synonym for --help
        -help        synonym for --help
@@ -27,7 +29,8 @@
        -s SRCTREE   linux kernel source tree is at path SRCTREE
                         (default is current directory)
        -S           linux kernel source tree is at root of current git repo
-       -T           Annotate output .dts with input source file and line (-T -T for more details)
+       -T           annotate output .dts with input source file and line
+                        (-T -T for more details)
        -u           unsorted, do not sort DTx
 
 
@@ -56,12 +59,8 @@
    or '/include/' to be processed.
 
    If DTx_1 and DTx_2 are in different architectures, then this script
-   may not work since \${ARCH} is part of the include path.  Two possible
-   workarounds:
-
-      `basename $0` \\
-          <(ARCH=arch_of_dtx_1 `basename $0` DTx_1) \\
-          <(ARCH=arch_of_dtx_2 `basename $0` DTx_2)
+   may not work since \${ARCH} is part of the include path.  The following
+   workaround can be used:
 
       `basename $0` ARCH=arch_of_dtx_1 DTx_1 >tmp_dtx_1.dts
       `basename $0` ARCH=arch_of_dtx_2 DTx_2 >tmp_dtx_2.dts
@@ -177,6 +176,7 @@
 annotate=""
 cmd_diff=0
 diff_flags="-u"
+diff_color=""
 dtx_file_1=""
 dtx_file_2=""
 dtc_sort="-s"
@@ -188,6 +188,13 @@
 
 	case $1 in
 
+	-c | --color )
+		if diff --color /dev/null /dev/null 2>/dev/null ; then
+			diff_color="--color=always"
+		fi
+		shift
+		;;
+
 	-f )
 		diff_flags="--unified=999999"
 		shift
@@ -343,7 +350,7 @@
 
 if (( ${cmd_diff} )) ; then
 
-	diff ${diff_flags} --label "${dtx_file_1}" --label "${dtx_file_2}" \
+	diff ${diff_flags} ${diff_color} --label "${dtx_file_1}" --label "${dtx_file_2}" \
 		<(compile_to_dts "${dtx_file_1}" "${dtx_path_1_dtc_include}") \
 		<(compile_to_dts "${dtx_file_2}" "${dtx_path_2_dtc_include}")
 
diff --git a/scripts/dtc/flattree.c b/scripts/dtc/flattree.c
index bd6977e..07f10d2 100644
--- a/scripts/dtc/flattree.c
+++ b/scripts/dtc/flattree.c
@@ -156,7 +156,7 @@
 		emit_offset_label(f, m->ref, m->offset);
 
 	while ((d.len - off) >= sizeof(uint32_t)) {
-		asm_emit_cell(e, fdt32_to_cpu(*((fdt32_t *)(d.val+off))));
+		asm_emit_cell(e, dtb_ld32(d.val + off));
 		off += sizeof(uint32_t);
 	}
 
diff --git a/scripts/dtc/fstree.c b/scripts/dtc/fstree.c
index 9871689..5e59594 100644
--- a/scripts/dtc/fstree.c
+++ b/scripts/dtc/fstree.c
@@ -30,7 +30,7 @@
 
 		tmpname = join_path(dirname, de->d_name);
 
-		if (lstat(tmpname, &st) < 0)
+		if (stat(tmpname, &st) < 0)
 			die("stat(%s): %s\n", tmpname, strerror(errno));
 
 		if (S_ISREG(st.st_mode)) {
diff --git a/scripts/dtc/libfdt/Makefile.libfdt b/scripts/dtc/libfdt/Makefile.libfdt
deleted file mode 100644
index e546397..0000000
--- a/scripts/dtc/libfdt/Makefile.libfdt
+++ /dev/null
@@ -1,18 +0,0 @@
-# SPDX-License-Identifier: (GPL-2.0-or-later OR BSD-2-Clause)
-# Makefile.libfdt
-#
-# This is not a complete Makefile of itself.  Instead, it is designed to
-# be easily embeddable into other systems of Makefiles.
-#
-LIBFDT_soname = libfdt.$(SHAREDLIB_EXT).1
-LIBFDT_INCLUDES = fdt.h libfdt.h libfdt_env.h
-LIBFDT_VERSION = version.lds
-LIBFDT_SRCS = fdt.c fdt_ro.c fdt_wip.c fdt_sw.c fdt_rw.c fdt_strerror.c fdt_empty_tree.c \
-	fdt_addresses.c fdt_overlay.c
-LIBFDT_OBJS = $(LIBFDT_SRCS:%.c=%.o)
-LIBFDT_LIB = libfdt-$(DTC_VERSION).$(SHAREDLIB_EXT)
-
-libfdt_clean:
-	@$(VECHO) CLEAN "(libfdt)"
-	rm -f $(STD_CLEANFILES:%=$(LIBFDT_dir)/%)
-	rm -f $(LIBFDT_dir)/$(LIBFDT_soname)
diff --git a/scripts/dtc/libfdt/fdt.c b/scripts/dtc/libfdt/fdt.c
index 179168e..6cf2fa0 100644
--- a/scripts/dtc/libfdt/fdt.c
+++ b/scripts/dtc/libfdt/fdt.c
@@ -15,23 +15,34 @@
  * that the given buffer contains what appears to be a flattened
  * device tree with sane information in its header.
  */
-int fdt_ro_probe_(const void *fdt)
+int32_t fdt_ro_probe_(const void *fdt)
 {
+	uint32_t totalsize = fdt_totalsize(fdt);
+
+	if (can_assume(VALID_DTB))
+		return totalsize;
+
 	if (fdt_magic(fdt) == FDT_MAGIC) {
 		/* Complete tree */
-		if (fdt_version(fdt) < FDT_FIRST_SUPPORTED_VERSION)
-			return -FDT_ERR_BADVERSION;
-		if (fdt_last_comp_version(fdt) > FDT_LAST_SUPPORTED_VERSION)
-			return -FDT_ERR_BADVERSION;
+		if (!can_assume(LATEST)) {
+			if (fdt_version(fdt) < FDT_FIRST_SUPPORTED_VERSION)
+				return -FDT_ERR_BADVERSION;
+			if (fdt_last_comp_version(fdt) >
+					FDT_LAST_SUPPORTED_VERSION)
+				return -FDT_ERR_BADVERSION;
+		}
 	} else if (fdt_magic(fdt) == FDT_SW_MAGIC) {
 		/* Unfinished sequential-write blob */
-		if (fdt_size_dt_struct(fdt) == 0)
+		if (!can_assume(VALID_INPUT) && fdt_size_dt_struct(fdt) == 0)
 			return -FDT_ERR_BADSTATE;
 	} else {
 		return -FDT_ERR_BADMAGIC;
 	}
 
-	return 0;
+	if (totalsize < INT32_MAX)
+		return totalsize;
+	else
+		return -FDT_ERR_TRUNCATED;
 }
 
 static int check_off_(uint32_t hdrsize, uint32_t totalsize, uint32_t off)
@@ -65,58 +76,78 @@
 		return FDT_V17_SIZE;
 }
 
+size_t fdt_header_size(const void *fdt)
+{
+	return can_assume(LATEST) ? FDT_V17_SIZE :
+		fdt_header_size_(fdt_version(fdt));
+}
+
 int fdt_check_header(const void *fdt)
 {
 	size_t hdrsize;
 
 	if (fdt_magic(fdt) != FDT_MAGIC)
 		return -FDT_ERR_BADMAGIC;
+	if (!can_assume(LATEST)) {
+		if ((fdt_version(fdt) < FDT_FIRST_SUPPORTED_VERSION)
+		    || (fdt_last_comp_version(fdt) >
+			FDT_LAST_SUPPORTED_VERSION))
+			return -FDT_ERR_BADVERSION;
+		if (fdt_version(fdt) < fdt_last_comp_version(fdt))
+			return -FDT_ERR_BADVERSION;
+	}
 	hdrsize = fdt_header_size(fdt);
-	if ((fdt_version(fdt) < FDT_FIRST_SUPPORTED_VERSION)
-	    || (fdt_last_comp_version(fdt) > FDT_LAST_SUPPORTED_VERSION))
-		return -FDT_ERR_BADVERSION;
-	if (fdt_version(fdt) < fdt_last_comp_version(fdt))
-		return -FDT_ERR_BADVERSION;
+	if (!can_assume(VALID_DTB)) {
 
-	if ((fdt_totalsize(fdt) < hdrsize)
-	    || (fdt_totalsize(fdt) > INT_MAX))
-		return -FDT_ERR_TRUNCATED;
-
-	/* Bounds check memrsv block */
-	if (!check_off_(hdrsize, fdt_totalsize(fdt), fdt_off_mem_rsvmap(fdt)))
-		return -FDT_ERR_TRUNCATED;
-
-	/* Bounds check structure block */
-	if (fdt_version(fdt) < 17) {
-		if (!check_off_(hdrsize, fdt_totalsize(fdt),
-				fdt_off_dt_struct(fdt)))
+		if ((fdt_totalsize(fdt) < hdrsize)
+		    || (fdt_totalsize(fdt) > INT_MAX))
 			return -FDT_ERR_TRUNCATED;
-	} else {
-		if (!check_block_(hdrsize, fdt_totalsize(fdt),
-				  fdt_off_dt_struct(fdt),
-				  fdt_size_dt_struct(fdt)))
+
+		/* Bounds check memrsv block */
+		if (!check_off_(hdrsize, fdt_totalsize(fdt),
+				fdt_off_mem_rsvmap(fdt)))
 			return -FDT_ERR_TRUNCATED;
 	}
 
-	/* Bounds check strings block */
-	if (!check_block_(hdrsize, fdt_totalsize(fdt),
-			  fdt_off_dt_strings(fdt), fdt_size_dt_strings(fdt)))
-		return -FDT_ERR_TRUNCATED;
+	if (!can_assume(VALID_DTB)) {
+		/* Bounds check structure block */
+		if (!can_assume(LATEST) && fdt_version(fdt) < 17) {
+			if (!check_off_(hdrsize, fdt_totalsize(fdt),
+					fdt_off_dt_struct(fdt)))
+				return -FDT_ERR_TRUNCATED;
+		} else {
+			if (!check_block_(hdrsize, fdt_totalsize(fdt),
+					  fdt_off_dt_struct(fdt),
+					  fdt_size_dt_struct(fdt)))
+				return -FDT_ERR_TRUNCATED;
+		}
+
+		/* Bounds check strings block */
+		if (!check_block_(hdrsize, fdt_totalsize(fdt),
+				  fdt_off_dt_strings(fdt),
+				  fdt_size_dt_strings(fdt)))
+			return -FDT_ERR_TRUNCATED;
+	}
 
 	return 0;
 }
 
 const void *fdt_offset_ptr(const void *fdt, int offset, unsigned int len)
 {
-	unsigned absoffset = offset + fdt_off_dt_struct(fdt);
+	unsigned int uoffset = offset;
+	unsigned int absoffset = offset + fdt_off_dt_struct(fdt);
 
-	if ((absoffset < offset)
-	    || ((absoffset + len) < absoffset)
-	    || (absoffset + len) > fdt_totalsize(fdt))
+	if (offset < 0)
 		return NULL;
 
-	if (fdt_version(fdt) >= 0x11)
-		if (((offset + len) < offset)
+	if (!can_assume(VALID_INPUT))
+		if ((absoffset < uoffset)
+		    || ((absoffset + len) < absoffset)
+		    || (absoffset + len) > fdt_totalsize(fdt))
+			return NULL;
+
+	if (can_assume(LATEST) || fdt_version(fdt) >= 0x11)
+		if (((uoffset + len) < uoffset)
 		    || ((offset + len) > fdt_size_dt_struct(fdt)))
 			return NULL;
 
@@ -132,7 +163,7 @@
 
 	*nextoffset = -FDT_ERR_TRUNCATED;
 	tagp = fdt_offset_ptr(fdt, offset, FDT_TAGSIZE);
-	if (!tagp)
+	if (!can_assume(VALID_DTB) && !tagp)
 		return FDT_END; /* premature end */
 	tag = fdt32_to_cpu(*tagp);
 	offset += FDT_TAGSIZE;
@@ -144,18 +175,19 @@
 		do {
 			p = fdt_offset_ptr(fdt, offset++, 1);
 		} while (p && (*p != '\0'));
-		if (!p)
+		if (!can_assume(VALID_DTB) && !p)
 			return FDT_END; /* premature end */
 		break;
 
 	case FDT_PROP:
 		lenp = fdt_offset_ptr(fdt, offset, sizeof(*lenp));
-		if (!lenp)
+		if (!can_assume(VALID_DTB) && !lenp)
 			return FDT_END; /* premature end */
 		/* skip-name offset, length and value */
 		offset += sizeof(struct fdt_property) - FDT_TAGSIZE
 			+ fdt32_to_cpu(*lenp);
-		if (fdt_version(fdt) < 0x10 && fdt32_to_cpu(*lenp) >= 8 &&
+		if (!can_assume(LATEST) &&
+		    fdt_version(fdt) < 0x10 && fdt32_to_cpu(*lenp) >= 8 &&
 		    ((offset - fdt32_to_cpu(*lenp)) % 8) != 0)
 			offset += 4;
 		break;
@@ -178,8 +210,11 @@
 
 int fdt_check_node_offset_(const void *fdt, int offset)
 {
-	if ((offset < 0) || (offset % FDT_TAGSIZE)
-	    || (fdt_next_tag(fdt, offset, &offset) != FDT_BEGIN_NODE))
+	if (!can_assume(VALID_INPUT)
+	    && ((offset < 0) || (offset % FDT_TAGSIZE)))
+		return -FDT_ERR_BADOFFSET;
+
+	if (fdt_next_tag(fdt, offset, &offset) != FDT_BEGIN_NODE)
 		return -FDT_ERR_BADOFFSET;
 
 	return offset;
@@ -187,8 +222,11 @@
 
 int fdt_check_prop_offset_(const void *fdt, int offset)
 {
-	if ((offset < 0) || (offset % FDT_TAGSIZE)
-	    || (fdt_next_tag(fdt, offset, &offset) != FDT_PROP))
+	if (!can_assume(VALID_INPUT)
+	    && ((offset < 0) || (offset % FDT_TAGSIZE)))
+		return -FDT_ERR_BADOFFSET;
+
+	if (fdt_next_tag(fdt, offset, &offset) != FDT_PROP)
 		return -FDT_ERR_BADOFFSET;
 
 	return offset;
@@ -276,9 +314,12 @@
 
 int fdt_move(const void *fdt, void *buf, int bufsize)
 {
+	if (!can_assume(VALID_INPUT) && bufsize < 0)
+		return -FDT_ERR_NOSPACE;
+
 	FDT_RO_PROBE(fdt);
 
-	if (fdt_totalsize(fdt) > bufsize)
+	if (fdt_totalsize(fdt) > (unsigned int)bufsize)
 		return -FDT_ERR_NOSPACE;
 
 	memmove(buf, fdt, fdt_totalsize(fdt));
diff --git a/scripts/dtc/libfdt/fdt_addresses.c b/scripts/dtc/libfdt/fdt_addresses.c
index d8ba8ec..9a82cd0 100644
--- a/scripts/dtc/libfdt/fdt_addresses.c
+++ b/scripts/dtc/libfdt/fdt_addresses.c
@@ -14,7 +14,7 @@
 static int fdt_cells(const void *fdt, int nodeoffset, const char *name)
 {
 	const fdt32_t *c;
-	int val;
+	uint32_t val;
 	int len;
 
 	c = fdt_getprop(fdt, nodeoffset, name, &len);
@@ -25,10 +25,10 @@
 		return -FDT_ERR_BADNCELLS;
 
 	val = fdt32_to_cpu(*c);
-	if ((val <= 0) || (val > FDT_MAX_NCELLS))
+	if (val > FDT_MAX_NCELLS)
 		return -FDT_ERR_BADNCELLS;
 
-	return val;
+	return (int)val;
 }
 
 int fdt_address_cells(const void *fdt, int nodeoffset)
@@ -36,6 +36,8 @@
 	int val;
 
 	val = fdt_cells(fdt, nodeoffset, "#address-cells");
+	if (val == 0)
+		return -FDT_ERR_BADNCELLS;
 	if (val == -FDT_ERR_NOTFOUND)
 		return 2;
 	return val;
diff --git a/scripts/dtc/libfdt/fdt_overlay.c b/scripts/dtc/libfdt/fdt_overlay.c
index e97f12b..d217e79 100644
--- a/scripts/dtc/libfdt/fdt_overlay.c
+++ b/scripts/dtc/libfdt/fdt_overlay.c
@@ -241,6 +241,7 @@
 
 		if (fixup_len % sizeof(uint32_t))
 			return -FDT_ERR_BADOVERLAY;
+		fixup_len /= sizeof(uint32_t);
 
 		tree_val = fdt_getprop(fdto, tree_node, name, &tree_len);
 		if (!tree_val) {
@@ -250,7 +251,7 @@
 			return tree_len;
 		}
 
-		for (i = 0; i < (fixup_len / sizeof(uint32_t)); i++) {
+		for (i = 0; i < fixup_len; i++) {
 			fdt32_t adj_val;
 			uint32_t poffset;
 
@@ -733,26 +734,36 @@
 		/* keep end marker to avoid strlen() */
 		e = path + path_len;
 
-		/* format: /<fragment-name>/__overlay__/<relative-subnode-path> */
-
 		if (*path != '/')
 			return -FDT_ERR_BADVALUE;
 
 		/* get fragment name first */
 		s = strchr(path + 1, '/');
-		if (!s)
-			return -FDT_ERR_BADOVERLAY;
+		if (!s) {
+			/* Symbol refers to something that won't end
+			 * up in the target tree */
+			continue;
+		}
 
 		frag_name = path + 1;
 		frag_name_len = s - path - 1;
 
 		/* verify format; safe since "s" lies in \0 terminated prop */
 		len = sizeof("/__overlay__/") - 1;
-		if ((e - s) < len || memcmp(s, "/__overlay__/", len))
-			return -FDT_ERR_BADOVERLAY;
-
-		rel_path = s + len;
-		rel_path_len = e - rel_path;
+		if ((e - s) > len && (memcmp(s, "/__overlay__/", len) == 0)) {
+			/* /<fragment-name>/__overlay__/<relative-subnode-path> */
+			rel_path = s + len;
+			rel_path_len = e - rel_path - 1;
+		} else if ((e - s) == len
+			   && (memcmp(s, "/__overlay__", len - 1) == 0)) {
+			/* /<fragment-name>/__overlay__ */
+			rel_path = "";
+			rel_path_len = 0;
+		} else {
+			/* Symbol refers to something that won't end
+			 * up in the target tree */
+			continue;
+		}
 
 		/* find the fragment index in which the symbol lies */
 		ret = fdt_subnode_offset_namelen(fdto, 0, frag_name,
diff --git a/scripts/dtc/libfdt/fdt_ro.c b/scripts/dtc/libfdt/fdt_ro.c
index 6fd9ec1..91cc6fe 100644
--- a/scripts/dtc/libfdt/fdt_ro.c
+++ b/scripts/dtc/libfdt/fdt_ro.c
@@ -33,35 +33,47 @@
 
 const char *fdt_get_string(const void *fdt, int stroffset, int *lenp)
 {
-	uint32_t absoffset = stroffset + fdt_off_dt_strings(fdt);
+	int32_t totalsize;
+	uint32_t absoffset;
 	size_t len;
 	int err;
 	const char *s, *n;
 
-	err = fdt_ro_probe_(fdt);
-	if (err != 0)
+	if (can_assume(VALID_INPUT)) {
+		s = (const char *)fdt + fdt_off_dt_strings(fdt) + stroffset;
+
+		if (lenp)
+			*lenp = strlen(s);
+		return s;
+	}
+	totalsize = fdt_ro_probe_(fdt);
+	err = totalsize;
+	if (totalsize < 0)
 		goto fail;
 
 	err = -FDT_ERR_BADOFFSET;
-	if (absoffset >= fdt_totalsize(fdt))
+	absoffset = stroffset + fdt_off_dt_strings(fdt);
+	if (absoffset >= (unsigned)totalsize)
 		goto fail;
-	len = fdt_totalsize(fdt) - absoffset;
+	len = totalsize - absoffset;
 
 	if (fdt_magic(fdt) == FDT_MAGIC) {
 		if (stroffset < 0)
 			goto fail;
-		if (fdt_version(fdt) >= 17) {
-			if (stroffset >= fdt_size_dt_strings(fdt))
+		if (can_assume(LATEST) || fdt_version(fdt) >= 17) {
+			if ((unsigned)stroffset >= fdt_size_dt_strings(fdt))
 				goto fail;
 			if ((fdt_size_dt_strings(fdt) - stroffset) < len)
 				len = fdt_size_dt_strings(fdt) - stroffset;
 		}
 	} else if (fdt_magic(fdt) == FDT_SW_MAGIC) {
-		if ((stroffset >= 0)
-		    || (stroffset < -fdt_size_dt_strings(fdt)))
+		unsigned int sw_stroffset = -stroffset;
+
+		if ((stroffset >= 0) ||
+		    (sw_stroffset > fdt_size_dt_strings(fdt)))
 			goto fail;
-		if ((-stroffset) < len)
-			len = -stroffset;
+		if (sw_stroffset < len)
+			len = sw_stroffset;
 	} else {
 		err = -FDT_ERR_INTERNAL;
 		goto fail;
@@ -147,13 +159,16 @@
 
 static const struct fdt_reserve_entry *fdt_mem_rsv(const void *fdt, int n)
 {
-	int offset = n * sizeof(struct fdt_reserve_entry);
-	int absoffset = fdt_off_mem_rsvmap(fdt) + offset;
+	unsigned int offset = n * sizeof(struct fdt_reserve_entry);
+	unsigned int absoffset = fdt_off_mem_rsvmap(fdt) + offset;
 
-	if (absoffset < fdt_off_mem_rsvmap(fdt))
-		return NULL;
-	if (absoffset > fdt_totalsize(fdt) - sizeof(struct fdt_reserve_entry))
-		return NULL;
+	if (!can_assume(VALID_INPUT)) {
+		if (absoffset < fdt_off_mem_rsvmap(fdt))
+			return NULL;
+		if (absoffset > fdt_totalsize(fdt) -
+		    sizeof(struct fdt_reserve_entry))
+			return NULL;
+	}
 	return fdt_mem_rsv_(fdt, n);
 }
 
@@ -163,7 +178,7 @@
 
 	FDT_RO_PROBE(fdt);
 	re = fdt_mem_rsv(fdt, n);
-	if (!re)
+	if (!can_assume(VALID_INPUT) && !re)
 		return -FDT_ERR_BADOFFSET;
 
 	*address = fdt64_ld(&re->address);
@@ -288,13 +303,13 @@
 	const char *nameptr;
 	int err;
 
-	if (((err = fdt_ro_probe_(fdt)) != 0)
+	if (((err = fdt_ro_probe_(fdt)) < 0)
 	    || ((err = fdt_check_node_offset_(fdt, nodeoffset)) < 0))
 			goto fail;
 
 	nameptr = nh->name;
 
-	if (fdt_version(fdt) < 0x10) {
+	if (!can_assume(LATEST) && fdt_version(fdt) < 0x10) {
 		/*
 		 * For old FDT versions, match the naming conventions of V16:
 		 * give only the leaf name (after all /). The actual tree
@@ -345,7 +360,8 @@
 	int err;
 	const struct fdt_property *prop;
 
-	if ((err = fdt_check_prop_offset_(fdt, offset)) < 0) {
+	if (!can_assume(VALID_INPUT) &&
+	    (err = fdt_check_prop_offset_(fdt, offset)) < 0) {
 		if (lenp)
 			*lenp = err;
 		return NULL;
@@ -366,7 +382,7 @@
 	/* Prior to version 16, properties may need realignment
 	 * and this API does not work. fdt_getprop_*() will, however. */
 
-	if (fdt_version(fdt) < 0x10) {
+	if (!can_assume(LATEST) && fdt_version(fdt) < 0x10) {
 		if (lenp)
 			*lenp = -FDT_ERR_BADVERSION;
 		return NULL;
@@ -387,7 +403,8 @@
 	     (offset = fdt_next_property_offset(fdt, offset))) {
 		const struct fdt_property *prop;
 
-		if (!(prop = fdt_get_property_by_offset_(fdt, offset, lenp))) {
+		prop = fdt_get_property_by_offset_(fdt, offset, lenp);
+		if (!can_assume(LIBFDT_FLAWLESS) && !prop) {
 			offset = -FDT_ERR_INTERNAL;
 			break;
 		}
@@ -412,7 +429,7 @@
 {
 	/* Prior to version 16, properties may need realignment
 	 * and this API does not work. fdt_getprop_*() will, however. */
-	if (fdt_version(fdt) < 0x10) {
+	if (!can_assume(LATEST) && fdt_version(fdt) < 0x10) {
 		if (lenp)
 			*lenp = -FDT_ERR_BADVERSION;
 		return NULL;
@@ -443,8 +460,8 @@
 		return NULL;
 
 	/* Handle realignment */
-	if (fdt_version(fdt) < 0x10 && (poffset + sizeof(*prop)) % 8 &&
-	    fdt32_ld(&prop->len) >= 8)
+	if (!can_assume(LATEST) && fdt_version(fdt) < 0x10 &&
+	    (poffset + sizeof(*prop)) % 8 && fdt32_ld(&prop->len) >= 8)
 		return prop->data + 4;
 	return prop->data;
 }
@@ -460,19 +477,24 @@
 	if (namep) {
 		const char *name;
 		int namelen;
-		name = fdt_get_string(fdt, fdt32_ld(&prop->nameoff),
-				      &namelen);
-		if (!name) {
-			if (lenp)
-				*lenp = namelen;
-			return NULL;
+
+		if (!can_assume(VALID_INPUT)) {
+			name = fdt_get_string(fdt, fdt32_ld(&prop->nameoff),
+					      &namelen);
+			if (!name) {
+				if (lenp)
+					*lenp = namelen;
+				return NULL;
+			}
+			*namep = name;
+		} else {
+			*namep = fdt_string(fdt, fdt32_ld(&prop->nameoff));
 		}
-		*namep = name;
 	}
 
 	/* Handle realignment */
-	if (fdt_version(fdt) < 0x10 && (offset + sizeof(*prop)) % 8 &&
-	    fdt32_ld(&prop->len) >= 8)
+	if (!can_assume(LATEST) && fdt_version(fdt) < 0x10 &&
+	    (offset + sizeof(*prop)) % 8 && fdt32_ld(&prop->len) >= 8)
 		return prop->data + 4;
 	return prop->data;
 }
@@ -597,10 +619,12 @@
 		}
 	}
 
-	if ((offset == -FDT_ERR_NOTFOUND) || (offset >= 0))
-		return -FDT_ERR_BADOFFSET;
-	else if (offset == -FDT_ERR_BADOFFSET)
-		return -FDT_ERR_BADSTRUCTURE;
+	if (!can_assume(VALID_INPUT)) {
+		if ((offset == -FDT_ERR_NOTFOUND) || (offset >= 0))
+			return -FDT_ERR_BADOFFSET;
+		else if (offset == -FDT_ERR_BADOFFSET)
+			return -FDT_ERR_BADSTRUCTURE;
+	}
 
 	return offset; /* error from fdt_next_node() */
 }
@@ -612,7 +636,8 @@
 
 	err = fdt_supernode_atdepth_offset(fdt, nodeoffset, 0, &nodedepth);
 	if (err)
-		return (err < 0) ? err : -FDT_ERR_INTERNAL;
+		return (can_assume(LIBFDT_FLAWLESS) || err < 0) ? err :
+			-FDT_ERR_INTERNAL;
 	return nodedepth;
 }
 
@@ -657,7 +682,7 @@
 {
 	int offset;
 
-	if ((phandle == 0) || (phandle == -1))
+	if ((phandle == 0) || (phandle == ~0U))
 		return -FDT_ERR_BADPHANDLE;
 
 	FDT_RO_PROBE(fdt);
@@ -832,66 +857,3 @@
 
 	return offset; /* error from fdt_next_node() */
 }
-
-int fdt_check_full(const void *fdt, size_t bufsize)
-{
-	int err;
-	int num_memrsv;
-	int offset, nextoffset = 0;
-	uint32_t tag;
-	unsigned depth = 0;
-	const void *prop;
-	const char *propname;
-
-	if (bufsize < FDT_V1_SIZE)
-		return -FDT_ERR_TRUNCATED;
-	err = fdt_check_header(fdt);
-	if (err != 0)
-		return err;
-	if (bufsize < fdt_totalsize(fdt))
-		return -FDT_ERR_TRUNCATED;
-
-	num_memrsv = fdt_num_mem_rsv(fdt);
-	if (num_memrsv < 0)
-		return num_memrsv;
-
-	while (1) {
-		offset = nextoffset;
-		tag = fdt_next_tag(fdt, offset, &nextoffset);
-
-		if (nextoffset < 0)
-			return nextoffset;
-
-		switch (tag) {
-		case FDT_NOP:
-			break;
-
-		case FDT_END:
-			if (depth != 0)
-				return -FDT_ERR_BADSTRUCTURE;
-			return 0;
-
-		case FDT_BEGIN_NODE:
-			depth++;
-			if (depth > INT_MAX)
-				return -FDT_ERR_BADSTRUCTURE;
-			break;
-
-		case FDT_END_NODE:
-			if (depth == 0)
-				return -FDT_ERR_BADSTRUCTURE;
-			depth--;
-			break;
-
-		case FDT_PROP:
-			prop = fdt_getprop_by_offset(fdt, offset, &propname,
-						     &err);
-			if (!prop)
-				return err;
-			break;
-
-		default:
-			return -FDT_ERR_INTERNAL;
-		}
-	}
-}
diff --git a/scripts/dtc/libfdt/fdt_rw.c b/scripts/dtc/libfdt/fdt_rw.c
index 8795947..68887b9 100644
--- a/scripts/dtc/libfdt/fdt_rw.c
+++ b/scripts/dtc/libfdt/fdt_rw.c
@@ -24,14 +24,16 @@
 
 static int fdt_rw_probe_(void *fdt)
 {
+	if (can_assume(VALID_DTB))
+		return 0;
 	FDT_RO_PROBE(fdt);
 
-	if (fdt_version(fdt) < 17)
+	if (!can_assume(LATEST) && fdt_version(fdt) < 17)
 		return -FDT_ERR_BADVERSION;
 	if (fdt_blocks_misordered_(fdt, sizeof(struct fdt_reserve_entry),
 				   fdt_size_dt_struct(fdt)))
 		return -FDT_ERR_BADLAYOUT;
-	if (fdt_version(fdt) > 17)
+	if (!can_assume(LATEST) && fdt_version(fdt) > 17)
 		fdt_set_version(fdt, 17);
 
 	return 0;
@@ -44,7 +46,7 @@
 			return err_; \
 	}
 
-static inline int fdt_data_size_(void *fdt)
+static inline unsigned int fdt_data_size_(void *fdt)
 {
 	return fdt_off_dt_strings(fdt) + fdt_size_dt_strings(fdt);
 }
@@ -52,15 +54,16 @@
 static int fdt_splice_(void *fdt, void *splicepoint, int oldlen, int newlen)
 {
 	char *p = splicepoint;
-	char *end = (char *)fdt + fdt_data_size_(fdt);
+	unsigned int dsize = fdt_data_size_(fdt);
+	size_t soff = p - (char *)fdt;
 
-	if (((p + oldlen) < p) || ((p + oldlen) > end))
+	if ((oldlen < 0) || (soff + oldlen < soff) || (soff + oldlen > dsize))
 		return -FDT_ERR_BADOFFSET;
-	if ((p < (char *)fdt) || ((end - oldlen + newlen) < (char *)fdt))
+	if ((p < (char *)fdt) || (dsize + newlen < (unsigned)oldlen))
 		return -FDT_ERR_BADOFFSET;
-	if ((end - oldlen + newlen) > ((char *)fdt + fdt_totalsize(fdt)))
+	if (dsize - oldlen + newlen > fdt_totalsize(fdt))
 		return -FDT_ERR_NOSPACE;
-	memmove(p + newlen, p + oldlen, end - p - oldlen);
+	memmove(p + newlen, p + oldlen, ((char *)fdt + dsize) - (p + oldlen));
 	return 0;
 }
 
@@ -112,6 +115,15 @@
 	return 0;
 }
 
+/**
+ * fdt_find_add_string_() - Find or allocate a string
+ *
+ * @fdt: pointer to the device tree to check/adjust
+ * @s: string to find/add
+ * @allocated: Set to 0 if the string was found, 1 if not found and so
+ *	allocated. Ignored if can_assume(NO_ROLLBACK)
+ * @return offset of string in the string table (whether found or added)
+ */
 static int fdt_find_add_string_(void *fdt, const char *s, int *allocated)
 {
 	char *strtab = (char *)fdt + fdt_off_dt_strings(fdt);
@@ -120,7 +132,8 @@
 	int len = strlen(s) + 1;
 	int err;
 
-	*allocated = 0;
+	if (!can_assume(NO_ROLLBACK))
+		*allocated = 0;
 
 	p = fdt_find_string_(strtab, fdt_size_dt_strings(fdt), s);
 	if (p)
@@ -132,7 +145,8 @@
 	if (err)
 		return err;
 
-	*allocated = 1;
+	if (!can_assume(NO_ROLLBACK))
+		*allocated = 1;
 
 	memcpy(new, s, len);
 	return (new - strtab);
@@ -206,7 +220,8 @@
 
 	err = fdt_splice_struct_(fdt, *prop, 0, proplen);
 	if (err) {
-		if (allocated)
+		/* Delete the string if we failed to add it */
+		if (!can_assume(NO_ROLLBACK) && allocated)
 			fdt_del_last_string_(fdt, name);
 		return err;
 	}
@@ -411,7 +426,7 @@
 	mem_rsv_size = (fdt_num_mem_rsv(fdt)+1)
 		* sizeof(struct fdt_reserve_entry);
 
-	if (fdt_version(fdt) >= 17) {
+	if (can_assume(LATEST) || fdt_version(fdt) >= 17) {
 		struct_size = fdt_size_dt_struct(fdt);
 	} else {
 		struct_size = 0;
@@ -421,7 +436,8 @@
 			return struct_size;
 	}
 
-	if (!fdt_blocks_misordered_(fdt, mem_rsv_size, struct_size)) {
+	if (can_assume(LIBFDT_ORDER) ||
+	    !fdt_blocks_misordered_(fdt, mem_rsv_size, struct_size)) {
 		/* no further work necessary */
 		err = fdt_move(fdt, buf, bufsize);
 		if (err)
diff --git a/scripts/dtc/libfdt/fdt_strerror.c b/scripts/dtc/libfdt/fdt_strerror.c
index 768db66..b435693 100644
--- a/scripts/dtc/libfdt/fdt_strerror.c
+++ b/scripts/dtc/libfdt/fdt_strerror.c
@@ -40,7 +40,7 @@
 	FDT_ERRTABENT(FDT_ERR_NOPHANDLES),
 	FDT_ERRTABENT(FDT_ERR_BADFLAGS),
 };
-#define FDT_ERRTABSIZE	(sizeof(fdt_errtable) / sizeof(fdt_errtable[0]))
+#define FDT_ERRTABSIZE	((int)(sizeof(fdt_errtable) / sizeof(fdt_errtable[0])))
 
 const char *fdt_strerror(int errval)
 {
@@ -48,7 +48,7 @@
 		return "<valid offset/length>";
 	else if (errval == 0)
 		return "<no error>";
-	else if (errval > -FDT_ERRTABSIZE) {
+	else if (-errval < FDT_ERRTABSIZE) {
 		const char *s = fdt_errtable[-errval].str;
 
 		if (s)
diff --git a/scripts/dtc/libfdt/fdt_sw.c b/scripts/dtc/libfdt/fdt_sw.c
index 76bea22..68b543c 100644
--- a/scripts/dtc/libfdt/fdt_sw.c
+++ b/scripts/dtc/libfdt/fdt_sw.c
@@ -12,10 +12,13 @@
 
 static int fdt_sw_probe_(void *fdt)
 {
-	if (fdt_magic(fdt) == FDT_MAGIC)
-		return -FDT_ERR_BADSTATE;
-	else if (fdt_magic(fdt) != FDT_SW_MAGIC)
-		return -FDT_ERR_BADMAGIC;
+	if (!can_assume(VALID_INPUT)) {
+		if (fdt_magic(fdt) == FDT_MAGIC)
+			return -FDT_ERR_BADSTATE;
+		else if (fdt_magic(fdt) != FDT_SW_MAGIC)
+			return -FDT_ERR_BADMAGIC;
+	}
+
 	return 0;
 }
 
@@ -29,7 +32,7 @@
 /* 'memrsv' state:	Initial state after fdt_create()
  *
  * Allowed functions:
- *	fdt_add_reservmap_entry()
+ *	fdt_add_reservemap_entry()
  *	fdt_finish_reservemap()		[moves to 'struct' state]
  */
 static int fdt_sw_probe_memrsv_(void *fdt)
@@ -38,7 +41,7 @@
 	if (err)
 		return err;
 
-	if (fdt_off_dt_strings(fdt) != 0)
+	if (!can_assume(VALID_INPUT) && fdt_off_dt_strings(fdt) != 0)
 		return -FDT_ERR_BADSTATE;
 	return 0;
 }
@@ -64,7 +67,8 @@
 	if (err)
 		return err;
 
-	if (fdt_off_dt_strings(fdt) != fdt_totalsize(fdt))
+	if (!can_assume(VALID_INPUT) &&
+	    fdt_off_dt_strings(fdt) != fdt_totalsize(fdt))
 		return -FDT_ERR_BADSTATE;
 	return 0;
 }
@@ -89,8 +93,8 @@
 
 static void *fdt_grab_space_(void *fdt, size_t len)
 {
-	int offset = fdt_size_dt_struct(fdt);
-	int spaceleft;
+	unsigned int offset = fdt_size_dt_struct(fdt);
+	unsigned int spaceleft;
 
 	spaceleft = fdt_totalsize(fdt) - fdt_off_dt_struct(fdt)
 		- fdt_size_dt_strings(fdt);
@@ -104,8 +108,8 @@
 
 int fdt_create_with_flags(void *buf, int bufsize, uint32_t flags)
 {
-	const size_t hdrsize = FDT_ALIGN(sizeof(struct fdt_header),
-					 sizeof(struct fdt_reserve_entry));
+	const int hdrsize = FDT_ALIGN(sizeof(struct fdt_header),
+				      sizeof(struct fdt_reserve_entry));
 	void *fdt = buf;
 
 	if (bufsize < hdrsize)
@@ -148,13 +152,17 @@
 
 	FDT_SW_PROBE(fdt);
 
+	if (bufsize < 0)
+		return -FDT_ERR_NOSPACE;
+
 	headsize = fdt_off_dt_struct(fdt) + fdt_size_dt_struct(fdt);
 	tailsize = fdt_size_dt_strings(fdt);
 
-	if ((headsize + tailsize) > fdt_totalsize(fdt))
+	if (!can_assume(VALID_DTB) &&
+	    headsize + tailsize > fdt_totalsize(fdt))
 		return -FDT_ERR_INTERNAL;
 
-	if ((headsize + tailsize) > bufsize)
+	if ((headsize + tailsize) > (unsigned)bufsize)
 		return -FDT_ERR_NOSPACE;
 
 	oldtail = (char *)fdt + fdt_totalsize(fdt) - tailsize;
@@ -242,18 +250,18 @@
 static int fdt_add_string_(void *fdt, const char *s)
 {
 	char *strtab = (char *)fdt + fdt_totalsize(fdt);
-	int strtabsize = fdt_size_dt_strings(fdt);
-	int len = strlen(s) + 1;
-	int struct_top, offset;
+	unsigned int strtabsize = fdt_size_dt_strings(fdt);
+	unsigned int len = strlen(s) + 1;
+	unsigned int struct_top, offset;
 
-	offset = -strtabsize - len;
+	offset = strtabsize + len;
 	struct_top = fdt_off_dt_struct(fdt) + fdt_size_dt_struct(fdt);
-	if (fdt_totalsize(fdt) + offset < struct_top)
+	if (fdt_totalsize(fdt) - offset < struct_top)
 		return 0; /* no more room :( */
 
-	memcpy(strtab + offset, s, len);
+	memcpy(strtab - offset, s, len);
 	fdt_set_size_dt_strings(fdt, strtabsize + len);
-	return offset;
+	return -offset;
 }
 
 /* Must only be used to roll back in case of error */
diff --git a/scripts/dtc/libfdt/fdt_wip.c b/scripts/dtc/libfdt/fdt_wip.c
index f64139e..c2d7566 100644
--- a/scripts/dtc/libfdt/fdt_wip.c
+++ b/scripts/dtc/libfdt/fdt_wip.c
@@ -23,7 +23,7 @@
 	if (!propval)
 		return proplen;
 
-	if (proplen < (len + idx))
+	if ((unsigned)proplen < (len + idx))
 		return -FDT_ERR_NOSPACE;
 
 	memcpy((char *)propval + idx, val, len);
diff --git a/scripts/dtc/libfdt/libfdt.h b/scripts/dtc/libfdt/libfdt.h
index 7b5ffd1..fe49b5d 100644
--- a/scripts/dtc/libfdt/libfdt.h
+++ b/scripts/dtc/libfdt/libfdt.h
@@ -9,6 +9,10 @@
 #include "libfdt_env.h"
 #include "fdt.h"
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 #define FDT_FIRST_SUPPORTED_VERSION	0x02
 #define FDT_LAST_SUPPORTED_VERSION	0x11
 
@@ -136,7 +140,7 @@
 
 static inline void fdt32_st(void *property, uint32_t value)
 {
-	uint8_t *bp = property;
+	uint8_t *bp = (uint8_t *)property;
 
 	bp[0] = value >> 24;
 	bp[1] = (value >> 16) & 0xff;
@@ -160,7 +164,7 @@
 
 static inline void fdt64_st(void *property, uint64_t value)
 {
-	uint8_t *bp = property;
+	uint8_t *bp = (uint8_t *)property;
 
 	bp[0] = value >> 56;
 	bp[1] = (value >> 48) & 0xff;
@@ -266,11 +270,12 @@
  * fdt_header_size - return the size of the tree's header
  * @fdt: pointer to a flattened device tree
  */
+size_t fdt_header_size(const void *fdt);
+
+/**
+ * fdt_header_size_ - internal function which takes a version number
+ */
 size_t fdt_header_size_(uint32_t version);
-static inline size_t fdt_header_size(const void *fdt)
-{
-	return fdt_header_size_(fdt_version(fdt));
-}
 
 /**
  * fdt_check_header - sanity check a device tree header
@@ -2068,4 +2073,8 @@
 
 const char *fdt_strerror(int errval);
 
+#ifdef __cplusplus
+}
+#endif
+
 #endif /* LIBFDT_H */
diff --git a/scripts/dtc/libfdt/libfdt_internal.h b/scripts/dtc/libfdt/libfdt_internal.h
index 7830e55..d4e0bd4 100644
--- a/scripts/dtc/libfdt/libfdt_internal.h
+++ b/scripts/dtc/libfdt/libfdt_internal.h
@@ -10,12 +10,12 @@
 #define FDT_ALIGN(x, a)		(((x) + (a) - 1) & ~((a) - 1))
 #define FDT_TAGALIGN(x)		(FDT_ALIGN((x), FDT_TAGSIZE))
 
-int fdt_ro_probe_(const void *fdt);
-#define FDT_RO_PROBE(fdt)			\
-	{ \
-		int err_; \
-		if ((err_ = fdt_ro_probe_(fdt)) != 0)	\
-			return err_; \
+int32_t fdt_ro_probe_(const void *fdt);
+#define FDT_RO_PROBE(fdt)					\
+	{							\
+		int32_t totalsize_;				\
+		if ((totalsize_ = fdt_ro_probe_(fdt)) < 0)	\
+			return totalsize_;			\
 	}
 
 int fdt_check_node_offset_(const void *fdt, int offset);
@@ -48,4 +48,126 @@
 
 #define FDT_SW_MAGIC		(~FDT_MAGIC)
 
+/**********************************************************************/
+/* Checking controls                                                  */
+/**********************************************************************/
+
+#ifndef FDT_ASSUME_MASK
+#define FDT_ASSUME_MASK 0
+#endif
+
+/*
+ * Defines assumptions which can be enabled. Each of these can be enabled
+ * individually. For maximum safety, don't enable any assumptions!
+ *
+ * For minimal code size and no safety, use ASSUME_PERFECT at your own risk.
+ * You should have another method of validating the device tree, such as a
+ * signature or hash check before using libfdt.
+ *
+ * For situations where security is not a concern it may be safe to enable
+ * ASSUME_SANE.
+ */
+enum {
+	/*
+	 * This does essentially no checks. Only the latest device-tree
+	 * version is correctly handled. Inconsistencies or errors in the device
+	 * tree may cause undefined behaviour or crashes. Invalid parameters
+	 * passed to libfdt may do the same.
+	 *
+	 * If an error occurs when modifying the tree it may leave the tree in
+	 * an intermediate (but valid) state. As an example, adding a property
+	 * where there is insufficient space may result in the property name
+	 * being added to the string table even though the property itself is
+	 * not added to the struct section.
+	 *
+	 * Only use this if you have a fully validated device tree with
+	 * the latest supported version and wish to minimise code size.
+	 */
+	ASSUME_PERFECT		= 0xff,
+
+	/*
+	 * This assumes that the device tree is sane. i.e. header metadata
+	 * and basic hierarchy are correct.
+	 *
+	 * With this assumption enabled, normal device trees produced by libfdt
+	 * and the compiler should be handled safely. Malicious device trees and
+	 * complete garbage may cause libfdt to behave badly or crash. Truncated
+	 * device trees (e.g. those only partially loaded) can also cause
+	 * problems.
+	 *
+	 * Note: Only checks that relate exclusively to the device tree itself
+	 * (not the parameters passed to libfdt) are disabled by this
+	 * assumption. This includes checking headers, tags and the like.
+	 */
+	ASSUME_VALID_DTB	= 1 << 0,
+
+	/*
+	 * This builds on ASSUME_VALID_DTB and further assumes that libfdt
+	 * functions are called with valid parameters, i.e. not trigger
+	 * FDT_ERR_BADOFFSET or offsets that are out of bounds. It disables any
+	 * extensive checking of parameters and the device tree, making various
+	 * assumptions about correctness.
+	 *
+	 * It doesn't make sense to enable this assumption unless
+	 * ASSUME_VALID_DTB is also enabled.
+	 */
+	ASSUME_VALID_INPUT	= 1 << 1,
+
+	/*
+	 * This disables checks for device-tree version and removes all code
+	 * which handles older versions.
+	 *
+	 * Only enable this if you know you have a device tree with the latest
+	 * version.
+	 */
+	ASSUME_LATEST		= 1 << 2,
+
+	/*
+	 * This assumes that it is OK for a failed addition to the device tree,
+	 * due to lack of space or some other problem, to skip any rollback
+	 * steps (such as dropping the property name from the string table).
+	 * This is safe to enable in most circumstances, even though it may
+	 * leave the tree in a sub-optimal state.
+	 */
+	ASSUME_NO_ROLLBACK	= 1 << 3,
+
+	/*
+	 * This assumes that the device tree components appear in a 'convenient'
+	 * order, i.e. the memory reservation block first, then the structure
+	 * block and finally the string block.
+	 *
+	 * This order is not specified by the device-tree specification,
+	 * but is expected by libfdt. The device-tree compiler always created
+	 * device trees with this order.
+	 *
+	 * This assumption disables a check in fdt_open_into() and removes the
+	 * ability to fix the problem there. This is safe if you know that the
+	 * device tree is correctly ordered. See fdt_blocks_misordered_().
+	 */
+	ASSUME_LIBFDT_ORDER	= 1 << 4,
+
+	/*
+	 * This assumes that libfdt itself does not have any internal bugs. It
+	 * drops certain checks that should never be needed unless libfdt has an
+	 * undiscovered bug.
+	 *
+	 * This can generally be considered safe to enable.
+	 */
+	ASSUME_LIBFDT_FLAWLESS	= 1 << 5,
+};
+
+/**
+ * can_assume_() - check if a particular assumption is enabled
+ *
+ * @mask: Mask to check (ASSUME_...)
+ * @return true if that assumption is enabled, else false
+ */
+static inline bool can_assume_(int mask)
+{
+	return FDT_ASSUME_MASK & mask;
+}
+
+/** helper macros for checking assumptions */
+#define can_assume(_assume)	can_assume_(ASSUME_ ## _assume)
+
 #endif /* LIBFDT_INTERNAL_H */
diff --git a/scripts/dtc/livetree.c b/scripts/dtc/livetree.c
index 0c03999..032df58 100644
--- a/scripts/dtc/livetree.c
+++ b/scripts/dtc/livetree.c
@@ -526,8 +526,7 @@
 	p = strchr(path, '/');
 
 	for_each_child(tree, child) {
-		if (p && (strlen(child->name) == p-path) &&
-		    strprefixeq(path, p - path, child->name))
+		if (p && strprefixeq(path, p - path, child->name))
 			return get_node_by_path(child, p+1);
 		else if (!p && streq(path, child->name))
 			return child;
diff --git a/scripts/dtc/treesource.c b/scripts/dtc/treesource.c
index c9d980c..061ba8c 100644
--- a/scripts/dtc/treesource.c
+++ b/scripts/dtc/treesource.c
@@ -110,13 +110,13 @@
 			fprintf(f, "%02"PRIx8, *(const uint8_t*)p);
 			break;
 		case 2:
-			fprintf(f, "0x%02"PRIx16, fdt16_to_cpu(*(const fdt16_t*)p));
+			fprintf(f, "0x%02"PRIx16, dtb_ld16(p));
 			break;
 		case 4:
-			fprintf(f, "0x%02"PRIx32, fdt32_to_cpu(*(const fdt32_t*)p));
+			fprintf(f, "0x%02"PRIx32, dtb_ld32(p));
 			break;
 		case 8:
-			fprintf(f, "0x%02"PRIx64, fdt64_to_cpu(*(const fdt64_t*)p));
+			fprintf(f, "0x%02"PRIx64, dtb_ld64(p));
 			break;
 		}
 		if (p + width < end)
@@ -183,7 +183,7 @@
 			nnotcelllbl++;
 	}
 
-	if ((p[len-1] == '\0') && (nnotstring == 0) && (nnul < (len-nnul))
+	if ((p[len-1] == '\0') && (nnotstring == 0) && (nnul <= (len-nnul))
 	    && (nnotstringlbl == 0)) {
 		return TYPE_STRING;
 	} else if (((len % sizeof(cell_t)) == 0) && (nnotcelllbl == 0)) {
diff --git a/scripts/dtc/update-dtc-source.sh b/scripts/dtc/update-dtc-source.sh
index 7dd29a0..bc704e2 100755
--- a/scripts/dtc/update-dtc-source.sh
+++ b/scripts/dtc/update-dtc-source.sh
@@ -32,9 +32,9 @@
 DTC_LINUX_PATH=`pwd`/scripts/dtc
 
 DTC_SOURCE="checks.c data.c dtc.c dtc.h flattree.c fstree.c livetree.c srcpos.c \
-		srcpos.h treesource.c util.c util.h version_gen.h yamltree.c Makefile.dtc \
+		srcpos.h treesource.c util.c util.h version_gen.h yamltree.c \
 		dtc-lexer.l dtc-parser.y"
-LIBFDT_SOURCE="Makefile.libfdt fdt.c fdt.h fdt_addresses.c fdt_empty_tree.c \
+LIBFDT_SOURCE="fdt.c fdt.h fdt_addresses.c fdt_empty_tree.c \
 		fdt_overlay.c fdt_ro.c fdt_rw.c fdt_strerror.c fdt_sw.c \
 		fdt_wip.c libfdt.h libfdt_env.h libfdt_internal.h"
 
diff --git a/scripts/dtc/util.c b/scripts/dtc/util.c
index 48af961..40274fb 100644
--- a/scripts/dtc/util.c
+++ b/scripts/dtc/util.c
@@ -13,6 +13,7 @@
 #include <stdarg.h>
 #include <string.h>
 #include <assert.h>
+#include <inttypes.h>
 
 #include <errno.h>
 #include <fcntl.h>
@@ -393,7 +394,7 @@
 
 		printf(" = <");
 		for (i = 0, len /= 4; i < len; i++)
-			printf("0x%08x%s", fdt32_to_cpu(cell[i]),
+			printf("0x%08" PRIx32 "%s", fdt32_to_cpu(cell[i]),
 			       i < (len - 1) ? " " : "");
 		printf(">");
 	} else {
diff --git a/scripts/dtc/util.h b/scripts/dtc/util.h
index ca5cb52..a771b46 100644
--- a/scripts/dtc/util.h
+++ b/scripts/dtc/util.h
@@ -2,6 +2,7 @@
 #ifndef UTIL_H
 #define UTIL_H
 
+#include <stdlib.h>
 #include <stdarg.h>
 #include <stdbool.h>
 #include <getopt.h>
@@ -12,7 +13,11 @@
  */
 
 #ifdef __GNUC__
+#ifdef __clang__
 #define PRINTF(i, j)	__attribute__((format (printf, i, j)))
+#else
+#define PRINTF(i, j)	__attribute__((format (gnu_printf, i, j)))
+#endif
 #define NORETURN	__attribute__((noreturn))
 #else
 #define PRINTF(i, j)
diff --git a/scripts/dtc/version_gen.h b/scripts/dtc/version_gen.h
index f2761e2..054cdd0 100644
--- a/scripts/dtc/version_gen.h
+++ b/scripts/dtc/version_gen.h
@@ -1 +1 @@
-#define DTC_VERSION "DTC 1.5.0-g702c1b6c"
+#define DTC_VERSION "DTC 1.6.0-gcbca977e"
diff --git a/scripts/dtc/yamltree.c b/scripts/dtc/yamltree.c
index 5b6ea8e..4e93c12 100644
--- a/scripts/dtc/yamltree.c
+++ b/scripts/dtc/yamltree.c
@@ -59,10 +59,10 @@
 			sprintf(buf, "0x%"PRIx8, *(uint8_t*)(data + off));
 			break;
 		case 2:
-			sprintf(buf, "0x%"PRIx16, fdt16_to_cpu(*(fdt16_t*)(data + off)));
+			sprintf(buf, "0x%"PRIx16, dtb_ld16(data + off));
 			break;
 		case 4:
-			sprintf(buf, "0x%"PRIx32, fdt32_to_cpu(*(fdt32_t*)(data + off)));
+			sprintf(buf, "0x%"PRIx32, dtb_ld32(data + off));
 			m = markers;
 			is_phandle = false;
 			for_each_marker_of_type(m, REF_PHANDLE) {
@@ -73,7 +73,7 @@
 			}
 			break;
 		case 8:
-			sprintf(buf, "0x%"PRIx64, fdt64_to_cpu(*(fdt64_t*)(data + off)));
+			sprintf(buf, "0x%"PRIx64, dtb_ld64(data + off));
 			break;
 		}
 
diff --git a/scripts/dummy-tools/gcc b/scripts/dummy-tools/gcc
new file mode 100755
index 0000000..0d0589c
--- /dev/null
+++ b/scripts/dummy-tools/gcc
@@ -0,0 +1,92 @@
+#!/bin/sh
+# SPDX-License-Identifier: GPL-2.0-only
+#
+# Staring v4.18, Kconfig evaluates compiler capabilities, and hides CONFIG
+# options your compiler does not support. This works well if you configure and
+# build the kernel on the same host machine.
+#
+# It is inconvenient if you prepare the .config that is carried to a different
+# build environment (typically this happens when you package the kernel for
+# distros) because using a different compiler potentially produces different
+# CONFIG options than the real build environment. So, you probably want to make
+# as many options visible as possible. In other words, you need to create a
+# super-set of CONFIG options that cover any build environment. If some of the
+# CONFIG options turned out to be unsupported on the build machine, they are
+# automatically disabled by the nature of Kconfig.
+#
+# However, it is not feasible to get a full-featured compiler for every arch.
+# Hence these dummy toolchains to make all compiler tests pass.
+#
+# Usage:
+#
+# From the top directory of the source tree, run
+#
+#   $ make CROSS_COMPILE=scripts/dummy-tools/ oldconfig
+#
+# Most of compiler features are tested by cc-option, which simply checks the
+# exit code of $(CC). This script does nothing and just exits with 0 in most
+# cases. So, $(cc-option, ...) is evaluated as 'y'.
+#
+# This scripts caters to more checks; handle --version and pre-process __GNUC__
+# etc. to pretend to be GCC, and also do right things to satisfy some scripts.
+
+# Check if the first parameter appears in the rest. Succeeds if found.
+# This helper is useful if a particular option was passed to this script.
+# Typically used like this:
+#   arg_contain <word-you-are-searching-for> "$@"
+arg_contain ()
+{
+	search="$1"
+	shift
+
+	while [ $# -gt 0 ]
+	do
+		if [ "$search" = "$1" ]; then
+			return 0
+		fi
+		shift
+	done
+
+	return 1
+}
+
+# To set CONFIG_CC_IS_GCC=y
+if arg_contain --version "$@"; then
+	echo "gcc (scripts/dummy-tools/gcc)"
+	exit 0
+fi
+
+if arg_contain -E "$@"; then
+	# For scripts/gcc-version.sh; This emulates GCC 20.0.0
+	if arg_contain - "$@"; then
+		sed 's/^__GNUC__$/20/; s/^__GNUC_MINOR__$/0/; s/^__GNUC_PATCHLEVEL__$/0/'
+		exit 0
+	else
+		echo "no input files" >&2
+		exit 1
+	fi
+fi
+
+if arg_contain -S "$@"; then
+	# For scripts/gcc-x86-*-has-stack-protector.sh
+	if arg_contain -fstack-protector "$@"; then
+		echo "%gs"
+		exit 0
+	fi
+fi
+
+# To set GCC_PLUGINS
+if arg_contain -print-file-name=plugin "$@"; then
+	plugin_dir=$(mktemp -d)
+
+	mkdir -p $plugin_dir/include
+	touch $plugin_dir/include/plugin-version.h
+
+	echo $plugin_dir
+	exit 0
+fi
+
+# inverted return value
+if arg_contain -D__SIZEOF_INT128__=0 "$@"; then
+	exit 1
+fi
diff --git a/scripts/dummy-tools/ld b/scripts/dummy-tools/ld
new file mode 100755
index 0000000..f682330
--- /dev/null
+++ b/scripts/dummy-tools/ld
@@ -0,0 +1,30 @@
+#!/bin/sh
+# SPDX-License-Identifier: GPL-2.0-only
+
+# Dummy script that always succeeds.
+
+# Check if the first parameter appears in the rest. Succeeds if found.
+# This helper is useful if a particular option was passed to this script.
+# Typically used like this:
+#   arg_contain <word-you-are-searching-for> "$@"
+arg_contain ()
+{
+	search="$1"
+	shift
+
+	while [ $# -gt 0 ]
+	do
+		if [ "$search" = "$1" ]; then
+			return 0
+		fi
+		shift
+	done
+
+	return 1
+}
+
+if arg_contain --version "$@" || arg_contain -v "$@"; then
+	progname=$(basename $0)
+	echo "GNU $progname (scripts/dummy-tools/$progname) 2.50"
+	exit 0
+fi
diff --git a/scripts/dummy-tools/nm b/scripts/dummy-tools/nm
new file mode 120000
index 0000000..c0648b3
--- /dev/null
+++ b/scripts/dummy-tools/nm
@@ -0,0 +1 @@
+ld
\ No newline at end of file
diff --git a/scripts/dummy-tools/objcopy b/scripts/dummy-tools/objcopy
new file mode 120000
index 0000000..c0648b3
--- /dev/null
+++ b/scripts/dummy-tools/objcopy
@@ -0,0 +1 @@
+ld
\ No newline at end of file
diff --git a/scripts/extract-cert.c b/scripts/extract-cert.c
index b071bf4..3bc48c7 100644
--- a/scripts/extract-cert.c
+++ b/scripts/extract-cert.c
@@ -71,7 +71,7 @@
 static const char *key_pass;
 static BIO *wb;
 static char *cert_dst;
-int kbuild_verbose;
+static int kbuild_verbose;
 
 static void write_cert(X509 *x509)
 {
diff --git a/scripts/gcc-plugin.sh b/scripts/gcc-plugin.sh
deleted file mode 100755
index d3caefe..0000000
--- a/scripts/gcc-plugin.sh
+++ /dev/null
@@ -1,66 +0,0 @@
-#!/bin/sh
-# SPDX-License-Identifier: GPL-2.0
-srctree=$(dirname "$0")
-
-SHOW_ERROR=
-if [ "$1" = "--show-error" ] ; then
-	SHOW_ERROR=1
-	shift || true
-fi
-
-gccplugins_dir=$($3 -print-file-name=plugin)
-plugincc=$($1 -E -x c++ - -o /dev/null -I"${srctree}"/gcc-plugins -I"${gccplugins_dir}"/include 2>&1 <<EOF
-#include "gcc-common.h"
-#if BUILDING_GCC_VERSION >= 4008 || defined(ENABLE_BUILD_WITH_CXX)
-#warning $2 CXX
-#else
-#warning $1 CC
-#endif
-EOF
-)
-
-if [ $? -ne 0 ]
-then
-	if [ -n "$SHOW_ERROR" ] ; then
-		echo "${plugincc}" >&2
-	fi
-	exit 1
-fi
-
-case "$plugincc" in
-	*"$1 CC"*)
-		echo "$1"
-		exit 0
-		;;
-
-	*"$2 CXX"*)
-		# the c++ compiler needs another test, see below
-		;;
-
-	*)
-		exit 1
-		;;
-esac
-
-# we need a c++ compiler that supports the designated initializer GNU extension
-plugincc=$($2 -c -x c++ -std=gnu++98 - -fsyntax-only -I"${srctree}"/gcc-plugins -I"${gccplugins_dir}"/include 2>&1 <<EOF
-#include "gcc-common.h"
-class test {
-public:
-	int test;
-} test = {
-	.test = 1
-};
-EOF
-)
-
-if [ $? -eq 0 ]
-then
-	echo "$2"
-	exit 0
-fi
-
-if [ -n "$SHOW_ERROR" ] ; then
-	echo "${plugincc}" >&2
-fi
-exit 1
diff --git a/scripts/gcc-plugins/.gitignore b/scripts/gcc-plugins/.gitignore
index de92ed9..b04e0f0 100644
--- a/scripts/gcc-plugins/.gitignore
+++ b/scripts/gcc-plugins/.gitignore
@@ -1 +1,2 @@
+# SPDX-License-Identifier: GPL-2.0-only
 randomize_layout_seed.h
diff --git a/scripts/gcc-plugins/Kconfig b/scripts/gcc-plugins/Kconfig
index e356954..ab9eb4c 100644
--- a/scripts/gcc-plugins/Kconfig
+++ b/scripts/gcc-plugins/Kconfig
@@ -1,13 +1,4 @@
 # SPDX-License-Identifier: GPL-2.0-only
-preferred-plugin-hostcc := $(if-success,[ $(gcc-version) -ge 40800 ],$(HOSTCXX),$(HOSTCC))
-
-config PLUGIN_HOSTCC
-	string
-	default "$(shell,$(srctree)/scripts/gcc-plugin.sh "$(preferred-plugin-hostcc)" "$(HOSTCXX)" "$(CC)")" if CC_IS_GCC
-	help
-	  Host compiler used to build GCC plugins.  This can be $(HOSTCXX),
-	  $(HOSTCC), or a null string if GCC plugin is unsupported.
-
 config HAVE_GCC_PLUGINS
 	bool
 	help
@@ -17,13 +8,14 @@
 menuconfig GCC_PLUGINS
 	bool "GCC plugins"
 	depends on HAVE_GCC_PLUGINS
-	depends on PLUGIN_HOSTCC != ""
+	depends on CC_IS_GCC
+	depends on $(success,test -e $(shell,$(CC) -print-file-name=plugin)/include/plugin-version.h)
 	default y
 	help
 	  GCC plugins are loadable modules that provide extra features to the
 	  compiler. They are useful for runtime instrumentation and static analysis.
 
-	  See Documentation/core-api/gcc-plugins.rst for details.
+	  See Documentation/kbuild/gcc-plugins.rst for details.
 
 if GCC_PLUGINS
 
@@ -86,7 +78,7 @@
 	  source tree isn't cleaned after kernel installation).
 
 	  The seed used for compilation is located at
-	  scripts/gcc-plgins/randomize_layout_seed.h.  It remains after
+	  scripts/gcc-plugins/randomize_layout_seed.h.  It remains after
 	  a make clean to allow for external modules to be compiled with
 	  the existing seed and will be removed by a make mrproper or
 	  make distclean.
diff --git a/scripts/gcc-plugins/Makefile b/scripts/gcc-plugins/Makefile
index 9e95862..b5487cc 100644
--- a/scripts/gcc-plugins/Makefile
+++ b/scripts/gcc-plugins/Makefile
@@ -1,31 +1,61 @@
 # SPDX-License-Identifier: GPL-2.0
-PLUGINCC := $(CONFIG_PLUGIN_HOSTCC:"%"=%)
-GCC_PLUGINS_DIR := $(shell $(CC) -print-file-name=plugin)
 
-ifeq ($(PLUGINCC),$(HOSTCC))
-  HOSTLIBS := hostlibs
-  HOST_EXTRACFLAGS += -I$(GCC_PLUGINS_DIR)/include -I$(src) -std=gnu99 -ggdb
-  export HOST_EXTRACFLAGS
-else
-  HOSTLIBS := hostcxxlibs
-  HOST_EXTRACXXFLAGS += -I$(GCC_PLUGINS_DIR)/include -I$(src) -std=gnu++98 -fno-rtti
-  HOST_EXTRACXXFLAGS += -fno-exceptions -fasynchronous-unwind-tables -ggdb
-  HOST_EXTRACXXFLAGS += -Wno-narrowing -Wno-unused-variable
-  HOST_EXTRACXXFLAGS += -Wno-format-diag
-  export HOST_EXTRACXXFLAGS
-endif
-
-$(obj)/randomize_layout_plugin.o: $(objtree)/$(obj)/randomize_layout_seed.h
+$(obj)/randomize_layout_plugin.so: $(objtree)/$(obj)/randomize_layout_seed.h
 quiet_cmd_create_randomize_layout_seed = GENSEED $@
 cmd_create_randomize_layout_seed = \
   $(CONFIG_SHELL) $(srctree)/$(src)/gen-random-seed.sh $@ $(objtree)/include/generated/randomize_layout_hash.h
 $(objtree)/$(obj)/randomize_layout_seed.h: FORCE
 	$(call if_changed,create_randomize_layout_seed)
-targets = randomize_layout_seed.h randomize_layout_hash.h
+targets += randomize_layout_seed.h randomize_layout_hash.h
 
-$(HOSTLIBS)-y := $(foreach p,$(GCC_PLUGIN),$(if $(findstring /,$(p)),,$(p)))
-always := $($(HOSTLIBS)-y)
+# Build rules for plugins
+#
+# No extra code is needed for single-file plugins.
+# For multi-file plugins, use *-objs syntax to list the objects.
+#
+# If the plugin foo.so is compiled from foo.c and foo2.c, you can do:
+#
+# foo-objs := foo.o foo2.o
 
-$(foreach p,$($(HOSTLIBS)-y:%.so=%),$(eval $(p)-objs := $(p).o))
+always-y += $(GCC_PLUGIN)
 
+GCC_PLUGINS_DIR = $(shell $(CC) -print-file-name=plugin)
+
+plugin_cxxflags	= -Wp,-MMD,$(depfile) $(KBUILD_HOSTCXXFLAGS) -fPIC \
+		   -I $(GCC_PLUGINS_DIR)/include -I $(obj) -std=gnu++11 \
+		   -fno-rtti -fno-exceptions -fasynchronous-unwind-tables \
+		   -ggdb -Wno-narrowing -Wno-unused-variable \
+		   -Wno-format-diag
+
+plugin_ldflags	= -shared
+
+plugin-single	:= $(foreach m, $(GCC_PLUGIN), $(if $($(m:%.so=%-objs)),,$(m)))
+plugin-multi	:= $(filter-out $(plugin-single), $(GCC_PLUGIN))
+plugin-objs	:= $(sort $(foreach m, $(plugin-multi), $($(m:%.so=%-objs))))
+
+targets += $(plugin-single) $(plugin-multi) $(plugin-objs)
 clean-files += *.so
+
+plugin-single	:= $(addprefix $(obj)/, $(plugin-single))
+plugin-multi	:= $(addprefix $(obj)/, $(plugin-multi))
+plugin-objs	:= $(addprefix $(obj)/, $(plugin-objs))
+
+quiet_cmd_plugin_cxx_so_c = HOSTCXX $@
+      cmd_plugin_cxx_so_c = $(HOSTCXX) $(plugin_cxxflags) $(plugin_ldflags) -o $@ $<
+
+$(plugin-single): $(obj)/%.so: $(src)/%.c FORCE
+	$(call if_changed_dep,plugin_cxx_so_c)
+
+quiet_cmd_plugin_ld_so_o = HOSTLD  $@
+      cmd_plugin_ld_so_o = $(HOSTCXX) $(plugin_ldflags) -o $@ \
+			   $(addprefix $(obj)/, $($(target-stem)-objs))
+
+$(plugin-multi): FORCE
+	$(call if_changed,plugin_ld_so_o)
+$(foreach m, $(notdir $(plugin-multi)), $(eval $(obj)/$m: $(addprefix $(obj)/, $($(m:%.so=%-objs)))))
+
+quiet_cmd_plugin_cxx_o_c = HOSTCXX $@
+      cmd_plugin_cxx_o_c = $(HOSTCXX) $(plugin_cxxflags) -c -o $@ $<
+
+$(plugin-objs): $(obj)/%.o: $(src)/%.c FORCE
+	$(call if_changed_dep,plugin_cxx_o_c)
diff --git a/scripts/gcc-plugins/cyc_complexity_plugin.c b/scripts/gcc-plugins/cyc_complexity_plugin.c
index 1909ec6..73124c2 100644
--- a/scripts/gcc-plugins/cyc_complexity_plugin.c
+++ b/scripts/gcc-plugins/cyc_complexity_plugin.c
@@ -5,7 +5,7 @@
  * Homepage:
  * https://github.com/ephox-gcc-plugins/cyclomatic_complexity
  *
- * http://en.wikipedia.org/wiki/Cyclomatic_complexity
+ * https://en.wikipedia.org/wiki/Cyclomatic_complexity
  * The complexity M is then defined as:
  * M = E - N + 2P
  * where
diff --git a/scripts/gcc-plugins/sancov_plugin.c b/scripts/gcc-plugins/sancov_plugin.c
index 0f98634..caff4a6 100644
--- a/scripts/gcc-plugins/sancov_plugin.c
+++ b/scripts/gcc-plugins/sancov_plugin.c
@@ -11,7 +11,7 @@
  *
  * You can read about it more here:
  *  https://gcc.gnu.org/viewcvs/gcc?limit_changes=0&view=revision&revision=231296
- *  http://lwn.net/Articles/674854/
+ *  https://lwn.net/Articles/674854/
  *  https://github.com/google/syzkaller
  *  https://lwn.net/Articles/677764/
  *
diff --git a/scripts/gcc-plugins/stackleak_plugin.c b/scripts/gcc-plugins/stackleak_plugin.c
index dbd3746..48e141e 100644
--- a/scripts/gcc-plugins/stackleak_plugin.c
+++ b/scripts/gcc-plugins/stackleak_plugin.c
@@ -20,7 +20,7 @@
  *
  * Debugging:
  *  - use fprintf() to stderr, debug_generic_expr(), debug_gimple_stmt(),
- *     print_rtl() and print_simple_rtl();
+ *     print_rtl_single() and debug_rtx();
  *  - add "-fdump-tree-all -fdump-rtl-all" to the plugin CFLAGS in
  *     Makefile.gcc-plugins to see the verbose dumps of the gcc passes;
  *  - use gcc -E to understand the preprocessing shenanigans;
@@ -32,7 +32,10 @@
 __visible int plugin_is_GPL_compatible;
 
 static int track_frame_size = -1;
+static bool build_for_x86 = false;
 static const char track_function[] = "stackleak_track_stack";
+static bool disable = false;
+static bool verbose = false;
 
 /*
  * Mark these global variables (roots) for gcc garbage collector since
@@ -43,34 +46,33 @@
 static struct plugin_info stackleak_plugin_info = {
 	.version = "201707101337",
 	.help = "track-min-size=nn\ttrack stack for functions with a stack frame size >= nn bytes\n"
+		"arch=target_arch\tspecify target build arch\n"
 		"disable\t\tdo not activate the plugin\n"
+		"verbose\t\tprint info about the instrumentation\n"
 };
 
-static void stackleak_add_track_stack(gimple_stmt_iterator *gsi, bool after)
+static void add_stack_tracking_gcall(gimple_stmt_iterator *gsi, bool after)
 {
 	gimple stmt;
-	gcall *stackleak_track_stack;
+	gcall *gimple_call;
 	cgraph_node_ptr node;
-	int frequency;
 	basic_block bb;
 
-	/* Insert call to void stackleak_track_stack(void) */
+	/* Insert calling stackleak_track_stack() */
 	stmt = gimple_build_call(track_function_decl, 0);
-	stackleak_track_stack = as_a_gcall(stmt);
-	if (after) {
-		gsi_insert_after(gsi, stackleak_track_stack,
-						GSI_CONTINUE_LINKING);
-	} else {
-		gsi_insert_before(gsi, stackleak_track_stack, GSI_SAME_STMT);
-	}
+	gimple_call = as_a_gcall(stmt);
+	if (after)
+		gsi_insert_after(gsi, gimple_call, GSI_CONTINUE_LINKING);
+	else
+		gsi_insert_before(gsi, gimple_call, GSI_SAME_STMT);
 
 	/* Update the cgraph */
-	bb = gimple_bb(stackleak_track_stack);
+	bb = gimple_bb(gimple_call);
 	node = cgraph_get_create_node(track_function_decl);
 	gcc_assert(node);
-	frequency = compute_call_stmt_bb_frequency(current_function_decl, bb);
 	cgraph_create_edge(cgraph_get_node(current_function_decl), node,
-			stackleak_track_stack, bb->count, frequency);
+			gimple_call, bb->count,
+			compute_call_stmt_bb_frequency(current_function_decl, bb));
 }
 
 static bool is_alloca(gimple stmt)
@@ -86,6 +88,83 @@
 	return false;
 }
 
+static tree get_current_stack_pointer_decl(void)
+{
+	varpool_node_ptr node;
+
+	FOR_EACH_VARIABLE(node) {
+		tree var = NODE_DECL(node);
+		tree name = DECL_NAME(var);
+
+		if (DECL_NAME_LENGTH(var) != sizeof("current_stack_pointer") - 1)
+			continue;
+
+		if (strcmp(IDENTIFIER_POINTER(name), "current_stack_pointer"))
+			continue;
+
+		return var;
+	}
+
+	if (verbose) {
+		fprintf(stderr, "stackleak: missing current_stack_pointer in %s()\n",
+			DECL_NAME_POINTER(current_function_decl));
+	}
+	return NULL_TREE;
+}
+
+static void add_stack_tracking_gasm(gimple_stmt_iterator *gsi, bool after)
+{
+	gasm *asm_call = NULL;
+	tree sp_decl, input;
+	vec<tree, va_gc> *inputs = NULL;
+
+	/* 'no_caller_saved_registers' is currently supported only for x86 */
+	gcc_assert(build_for_x86);
+
+	/*
+	 * Insert calling stackleak_track_stack() in asm:
+	 *   asm volatile("call stackleak_track_stack"
+	 *		  :: "r" (current_stack_pointer))
+	 * Use ASM_CALL_CONSTRAINT trick from arch/x86/include/asm/asm.h.
+	 * This constraint is taken into account during gcc shrink-wrapping
+	 * optimization. It is needed to be sure that stackleak_track_stack()
+	 * call is inserted after the prologue of the containing function,
+	 * when the stack frame is prepared.
+	 */
+	sp_decl = get_current_stack_pointer_decl();
+	if (sp_decl == NULL_TREE) {
+		add_stack_tracking_gcall(gsi, after);
+		return;
+	}
+	input = build_tree_list(NULL_TREE, build_const_char_string(2, "r"));
+	input = chainon(NULL_TREE, build_tree_list(input, sp_decl));
+	vec_safe_push(inputs, input);
+	asm_call = gimple_build_asm_vec("call stackleak_track_stack",
+					inputs, NULL, NULL, NULL);
+	gimple_asm_set_volatile(asm_call, true);
+	if (after)
+		gsi_insert_after(gsi, asm_call, GSI_CONTINUE_LINKING);
+	else
+		gsi_insert_before(gsi, asm_call, GSI_SAME_STMT);
+	update_stmt(asm_call);
+}
+
+static void add_stack_tracking(gimple_stmt_iterator *gsi, bool after)
+{
+	/*
+	 * The 'no_caller_saved_registers' attribute is used for
+	 * stackleak_track_stack(). If the compiler supports this attribute for
+	 * the target arch, we can add calling stackleak_track_stack() in asm.
+	 * That improves performance: we avoid useless operations with the
+	 * caller-saved registers in the functions from which we will remove
+	 * stackleak_track_stack() call during the stackleak_cleanup pass.
+	 */
+	if (lookup_attribute_spec(get_identifier("no_caller_saved_registers")))
+		add_stack_tracking_gasm(gsi, after);
+	else
+		add_stack_tracking_gcall(gsi, after);
+}
+
 /*
  * Work with the GIMPLE representation of the code. Insert the
  * stackleak_track_stack() call after alloca() and into the beginning
@@ -95,7 +174,7 @@
 {
 	basic_block bb, entry_bb;
 	bool prologue_instrumented = false, is_leaf = true;
-	gimple_stmt_iterator gsi;
+	gimple_stmt_iterator gsi = { 0 };
 
 	/*
 	 * ENTRY_BLOCK_PTR is a basic block which represents possible entry
@@ -123,8 +202,13 @@
 			if (!is_alloca(stmt))
 				continue;
 
+			if (verbose) {
+				fprintf(stderr, "stackleak: be careful, alloca() in %s()\n",
+					DECL_NAME_POINTER(current_function_decl));
+			}
+
 			/* Insert stackleak_track_stack() call after alloca() */
-			stackleak_add_track_stack(&gsi, true);
+			add_stack_tracking(&gsi, true);
 			if (bb == entry_bb)
 				prologue_instrumented = true;
 		}
@@ -169,7 +253,7 @@
 		bb = single_succ(ENTRY_BLOCK_PTR_FOR_FN(cfun));
 	}
 	gsi = gsi_after_labels(bb);
-	stackleak_add_track_stack(&gsi, false);
+	add_stack_tracking(&gsi, false);
 
 	return 0;
 }
@@ -183,21 +267,10 @@
 #endif
 }
 
-/*
- * Work with the RTL representation of the code.
- * Remove the unneeded stackleak_track_stack() calls from the functions
- * which don't call alloca() and don't have a large enough stack frame size.
- */
-static unsigned int stackleak_cleanup_execute(void)
+static void remove_stack_tracking_gcall(void)
 {
 	rtx_insn *insn, *next;
 
-	if (cfun->calls_alloca)
-		return 0;
-
-	if (large_stack_frame())
-		return 0;
-
 	/*
 	 * Find stackleak_track_stack() calls. Loop through the chain of insns,
 	 * which is an RTL representation of the code for a function.
@@ -258,6 +331,102 @@
 		}
 #endif
 	}
+}
+
+static bool remove_stack_tracking_gasm(void)
+{
+	bool removed = false;
+	rtx_insn *insn, *next;
+
+	/* 'no_caller_saved_registers' is currently supported only for x86 */
+	gcc_assert(build_for_x86);
+
+	/*
+	 * Find stackleak_track_stack() asm calls. Loop through the chain of
+	 * insns, which is an RTL representation of the code for a function.
+	 *
+	 * The example of a matching insn:
+	 *  (insn 11 5 12 2 (parallel [ (asm_operands/v
+	 *  ("call stackleak_track_stack") ("") 0
+	 *  [ (reg/v:DI 7 sp [ current_stack_pointer ]) ]
+	 *  [ (asm_input:DI ("r")) ] [])
+	 *  (clobber (reg:CC 17 flags)) ]) -1 (nil))
+	 */
+	for (insn = get_insns(); insn; insn = next) {
+		rtx body;
+
+		next = NEXT_INSN(insn);
+
+		/* Check the expression code of the insn */
+		if (!NONJUMP_INSN_P(insn))
+			continue;
+
+		/*
+		 * Check the expression code of the insn body, which is an RTL
+		 * Expression (RTX) describing the side effect performed by
+		 * that insn.
+		 */
+		body = PATTERN(insn);
+
+		if (GET_CODE(body) != PARALLEL)
+			continue;
+
+		body = XVECEXP(body, 0, 0);
+
+		if (GET_CODE(body) != ASM_OPERANDS)
+			continue;
+
+		if (strcmp(ASM_OPERANDS_TEMPLATE(body),
+						"call stackleak_track_stack")) {
+			continue;
+		}
+
+		delete_insn_and_edges(insn);
+		gcc_assert(!removed);
+		removed = true;
+	}
+
+	return removed;
+}
+
+/*
+ * Work with the RTL representation of the code.
+ * Remove the unneeded stackleak_track_stack() calls from the functions
+ * which don't call alloca() and don't have a large enough stack frame size.
+ */
+static unsigned int stackleak_cleanup_execute(void)
+{
+	const char *fn = DECL_NAME_POINTER(current_function_decl);
+	bool removed = false;
+
+	/*
+	 * Leave stack tracking in functions that call alloca().
+	 * Additional case:
+	 *   gcc before version 7 called allocate_dynamic_stack_space() from
+	 *   expand_stack_vars() for runtime alignment of constant-sized stack
+	 *   variables. That caused cfun->calls_alloca to be set for functions
+	 *   that in fact don't use alloca().
+	 *   For more info see gcc commit 7072df0aae0c59ae437e.
+	 *   Let's leave such functions instrumented as well.
+	 */
+	if (cfun->calls_alloca) {
+		if (verbose)
+			fprintf(stderr, "stackleak: instrument %s(): calls_alloca\n", fn);
+		return 0;
+	}
+
+	/* Leave stack tracking in functions with large stack frame */
+	if (large_stack_frame()) {
+		if (verbose)
+			fprintf(stderr, "stackleak: instrument %s()\n", fn);
+		return 0;
+	}
+
+	if (lookup_attribute_spec(get_identifier("no_caller_saved_registers")))
+		removed = remove_stack_tracking_gasm();
+
+	if (!removed)
+		remove_stack_tracking_gcall();
 
 	return 0;
 }
@@ -377,9 +546,6 @@
 
 	/* Parse the plugin arguments */
 	for (i = 0; i < argc; i++) {
-		if (!strcmp(argv[i].key, "disable"))
-			return 0;
-
 		if (!strcmp(argv[i].key, "track-min-size")) {
 			if (!argv[i].value) {
 				error(G_("no value supplied for option '-fplugin-arg-%s-%s'"),
@@ -393,6 +559,19 @@
 					plugin_name, argv[i].key, argv[i].value);
 				return 1;
 			}
+		} else if (!strcmp(argv[i].key, "arch")) {
+			if (!argv[i].value) {
+				error(G_("no value supplied for option '-fplugin-arg-%s-%s'"),
+					plugin_name, argv[i].key);
+				return 1;
+			}
+
+			if (!strcmp(argv[i].value, "x86"))
+				build_for_x86 = true;
+		} else if (!strcmp(argv[i].key, "disable")) {
+			disable = true;
+		} else if (!strcmp(argv[i].key, "verbose")) {
+			verbose = true;
 		} else {
 			error(G_("unknown option '-fplugin-arg-%s-%s'"),
 					plugin_name, argv[i].key);
@@ -400,6 +579,12 @@
 		}
 	}
 
+	if (disable) {
+		if (verbose)
+			fprintf(stderr, "stackleak: disabled for this translation unit\n");
+		return 0;
+	}
+
 	/* Give the information about the plugin */
 	register_callback(plugin_name, PLUGIN_INFO, NULL,
 						&stackleak_plugin_info);
diff --git a/scripts/gcc-plugins/structleak_plugin.c b/scripts/gcc-plugins/structleak_plugin.c
index e89be8f..b9ef2e1 100644
--- a/scripts/gcc-plugins/structleak_plugin.c
+++ b/scripts/gcc-plugins/structleak_plugin.c
@@ -11,7 +11,7 @@
  * otherwise leak kernel stack to userland if they aren't properly initialized
  * by later code
  *
- * Homepage: http://pax.grsecurity.net/
+ * Homepage: https://pax.grsecurity.net/
  *
  * Options:
  * -fplugin-arg-structleak_plugin-disable
diff --git a/scripts/gdb/linux/.gitignore b/scripts/gdb/linux/.gitignore
index 2573543..43234cb 100644
--- a/scripts/gdb/linux/.gitignore
+++ b/scripts/gdb/linux/.gitignore
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-2.0-only
 *.pyc
 *.pyo
 constants.py
diff --git a/scripts/gdb/linux/dmesg.py b/scripts/gdb/linux/dmesg.py
index 2fa7bb8..a92c55b 100644
--- a/scripts/gdb/linux/dmesg.py
+++ b/scripts/gdb/linux/dmesg.py
@@ -16,8 +16,13 @@
 
 from linux import utils
 
-printk_log_type = utils.CachedType("struct printk_log")
-
+printk_info_type = utils.CachedType("struct printk_info")
+prb_data_blk_lpos_type = utils.CachedType("struct prb_data_blk_lpos")
+prb_desc_type = utils.CachedType("struct prb_desc")
+prb_desc_ring_type = utils.CachedType("struct prb_desc_ring")
+prb_data_ring_type = utils.CachedType("struct prb_data_ring")
+printk_ringbuffer_type = utils.CachedType("struct printk_ringbuffer")
+atomic_long_type = utils.CachedType("atomic_long_t")
 
 class LxDmesg(gdb.Command):
     """Print Linux kernel log buffer."""
@@ -26,44 +31,110 @@
         super(LxDmesg, self).__init__("lx-dmesg", gdb.COMMAND_DATA)
 
     def invoke(self, arg, from_tty):
-        log_buf_addr = int(str(gdb.parse_and_eval(
-            "(void *)'printk.c'::log_buf")).split()[0], 16)
-        log_first_idx = int(gdb.parse_and_eval("'printk.c'::log_first_idx"))
-        log_next_idx = int(gdb.parse_and_eval("'printk.c'::log_next_idx"))
-        log_buf_len = int(gdb.parse_and_eval("'printk.c'::log_buf_len"))
-
         inf = gdb.inferiors()[0]
-        start = log_buf_addr + log_first_idx
-        if log_first_idx < log_next_idx:
-            log_buf_2nd_half = -1
-            length = log_next_idx - log_first_idx
-            log_buf = utils.read_memoryview(inf, start, length).tobytes()
-        else:
-            log_buf_2nd_half = log_buf_len - log_first_idx
-            a = utils.read_memoryview(inf, start, log_buf_2nd_half)
-            b = utils.read_memoryview(inf, log_buf_addr, log_next_idx)
-            log_buf = a.tobytes() + b.tobytes()
 
-        length_offset = printk_log_type.get_type()['len'].bitpos // 8
-        text_len_offset = printk_log_type.get_type()['text_len'].bitpos // 8
-        time_stamp_offset = printk_log_type.get_type()['ts_nsec'].bitpos // 8
-        text_offset = printk_log_type.get_type().sizeof
+        # read in prb structure
+        prb_addr = int(str(gdb.parse_and_eval("(void *)'printk.c'::prb")).split()[0], 16)
+        sz = printk_ringbuffer_type.get_type().sizeof
+        prb = utils.read_memoryview(inf, prb_addr, sz).tobytes()
 
-        pos = 0
-        while pos < log_buf.__len__():
-            length = utils.read_u16(log_buf, pos + length_offset)
-            if length == 0:
-                if log_buf_2nd_half == -1:
-                    gdb.write("Corrupted log buffer!\n")
+        # read in descriptor ring structure
+        off = printk_ringbuffer_type.get_type()['desc_ring'].bitpos // 8
+        addr = prb_addr + off
+        sz = prb_desc_ring_type.get_type().sizeof
+        desc_ring = utils.read_memoryview(inf, addr, sz).tobytes()
+
+        # read in descriptor array
+        off = prb_desc_ring_type.get_type()['count_bits'].bitpos // 8
+        desc_ring_count = 1 << utils.read_u32(desc_ring, off)
+        desc_sz = prb_desc_type.get_type().sizeof
+        off = prb_desc_ring_type.get_type()['descs'].bitpos // 8
+        addr = utils.read_ulong(desc_ring, off)
+        descs = utils.read_memoryview(inf, addr, desc_sz * desc_ring_count).tobytes()
+
+        # read in info array
+        info_sz = printk_info_type.get_type().sizeof
+        off = prb_desc_ring_type.get_type()['infos'].bitpos // 8
+        addr = utils.read_ulong(desc_ring, off)
+        infos = utils.read_memoryview(inf, addr, info_sz * desc_ring_count).tobytes()
+
+        # read in text data ring structure
+        off = printk_ringbuffer_type.get_type()['text_data_ring'].bitpos // 8
+        addr = prb_addr + off
+        sz = prb_data_ring_type.get_type().sizeof
+        text_data_ring = utils.read_memoryview(inf, addr, sz).tobytes()
+
+        # read in text data
+        off = prb_data_ring_type.get_type()['size_bits'].bitpos // 8
+        text_data_sz = 1 << utils.read_u32(text_data_ring, off)
+        off = prb_data_ring_type.get_type()['data'].bitpos // 8
+        addr = utils.read_ulong(text_data_ring, off)
+        text_data = utils.read_memoryview(inf, addr, text_data_sz).tobytes()
+
+        counter_off = atomic_long_type.get_type()['counter'].bitpos // 8
+
+        sv_off = prb_desc_type.get_type()['state_var'].bitpos // 8
+
+        off = prb_desc_type.get_type()['text_blk_lpos'].bitpos // 8
+        begin_off = off + (prb_data_blk_lpos_type.get_type()['begin'].bitpos // 8)
+        next_off = off + (prb_data_blk_lpos_type.get_type()['next'].bitpos // 8)
+
+        ts_off = printk_info_type.get_type()['ts_nsec'].bitpos // 8
+        len_off = printk_info_type.get_type()['text_len'].bitpos // 8
+
+        # definitions from kernel/printk/printk_ringbuffer.h
+        desc_committed = 1
+        desc_finalized = 2
+        desc_sv_bits = utils.get_long_type().sizeof * 8
+        desc_flags_shift = desc_sv_bits - 2
+        desc_flags_mask = 3 << desc_flags_shift
+        desc_id_mask = ~desc_flags_mask
+
+        # read in tail and head descriptor ids
+        off = prb_desc_ring_type.get_type()['tail_id'].bitpos // 8
+        tail_id = utils.read_u64(desc_ring, off + counter_off)
+        off = prb_desc_ring_type.get_type()['head_id'].bitpos // 8
+        head_id = utils.read_u64(desc_ring, off + counter_off)
+
+        did = tail_id
+        while True:
+            ind = did % desc_ring_count
+            desc_off = desc_sz * ind
+            info_off = info_sz * ind
+
+            # skip non-committed record
+            state = 3 & (utils.read_u64(descs, desc_off + sv_off +
+                                        counter_off) >> desc_flags_shift)
+            if state != desc_committed and state != desc_finalized:
+                if did == head_id:
                     break
-                pos = log_buf_2nd_half
+                did = (did + 1) & desc_id_mask
                 continue
 
-            text_len = utils.read_u16(log_buf, pos + text_len_offset)
-            text_start = pos + text_offset
-            text = log_buf[text_start:text_start + text_len].decode(
-                encoding='utf8', errors='replace')
-            time_stamp = utils.read_u64(log_buf, pos + time_stamp_offset)
+            begin = utils.read_ulong(descs, desc_off + begin_off) % text_data_sz
+            end = utils.read_ulong(descs, desc_off + next_off) % text_data_sz
+
+            # handle data-less record
+            if begin & 1 == 1:
+                text = ""
+            else:
+                # handle wrapping data block
+                if begin > end:
+                    begin = 0
+
+                # skip over descriptor id
+                text_start = begin + utils.get_long_type().sizeof
+
+                text_len = utils.read_u16(infos, info_off + len_off)
+
+                # handle truncated message
+                if end - text_start < text_len:
+                    text_len = end - text_start
+
+                text = text_data[text_start:text_start + text_len].decode(
+                    encoding='utf8', errors='replace')
+
+            time_stamp = utils.read_u64(infos, info_off + ts_off)
 
             for line in text.splitlines():
                 msg = u"[{time:12.6f}] {line}\n".format(
@@ -75,7 +146,9 @@
                     msg = msg.encode(encoding='utf8', errors='replace')
                 gdb.write(msg)
 
-            pos += length
+            if did == head_id:
+                break
+            did = (did + 1) & desc_id_mask
 
 
 LxDmesg()
diff --git a/scripts/gdb/linux/genpd.py b/scripts/gdb/linux/genpd.py
index 6ca93bd..39cd1ab 100644
--- a/scripts/gdb/linux/genpd.py
+++ b/scripts/gdb/linux/genpd.py
@@ -49,17 +49,17 @@
         else:
             status_string = 'off-{}'.format(genpd['state_idx'])
 
-        slave_names = []
+        child_names = []
         for link in list_for_each_entry(
-                genpd['master_links'],
+                genpd['parent_links'],
                 device_link_type.get_type().pointer(),
-                'master_node'):
-            slave_names.apend(link['slave']['name'])
+                'parent_node'):
+            child_names.append(link['child']['name'])
 
         gdb.write('%-30s  %-15s %s\n' % (
                 genpd['name'].string(),
                 status_string,
-                ', '.join(slave_names)))
+                ', '.join(child_names)))
 
         # Print devices in domain
         for pm_data in list_for_each_entry(genpd['dev_list'],
@@ -70,7 +70,7 @@
             gdb.write('    %-50s  %s\n' % (kobj_path, rtpm_status_str(dev)))
 
     def invoke(self, arg, from_tty):
-        gdb.write('domain                          status          slaves\n');
+        gdb.write('domain                          status          children\n');
         gdb.write('    /device                                             runtime status\n');
         gdb.write('----------------------------------------------------------------------\n');
         for genpd in list_for_each_entry(
diff --git a/scripts/gdb/linux/proc.py b/scripts/gdb/linux/proc.py
index 6a56bba..09cd871 100644
--- a/scripts/gdb/linux/proc.py
+++ b/scripts/gdb/linux/proc.py
@@ -167,6 +167,9 @@
         if not namespace:
             raise gdb.GdbError("No namespace for current process")
 
+        gdb.write("{:^18} {:^15} {:>9} {} {} options\n".format(
+                  "mount", "super_block", "devname", "pathname", "fstype"))
+
         for vfs in lists.list_for_each_entry(namespace['list'],
                                              mount_ptr_type, "mnt_list"):
             devname = vfs['mnt_devname'].string()
@@ -190,14 +193,10 @@
             m_flags = int(vfs['mnt']['mnt_flags'])
             rd = "ro" if (s_flags & constants.LX_SB_RDONLY) else "rw"
 
-            gdb.write(
-                "{} {} {} {}{}{} 0 0\n"
-                .format(devname,
-                        pathname,
-                        fstype,
-                        rd,
-                        info_opts(FS_INFO, s_flags),
-                        info_opts(MNT_INFO, m_flags)))
+            gdb.write("{} {} {} {} {} {}{}{} 0 0\n".format(
+                      vfs.format_string(), superblock.format_string(), devname,
+                      pathname, fstype, rd, info_opts(FS_INFO, s_flags),
+                      info_opts(MNT_INFO, m_flags)))
 
 
 LxMounts()
diff --git a/scripts/gdb/linux/rbtree.py b/scripts/gdb/linux/rbtree.py
index c4b9916..fe46285 100644
--- a/scripts/gdb/linux/rbtree.py
+++ b/scripts/gdb/linux/rbtree.py
@@ -17,7 +17,7 @@
         raise gdb.GdbError("Must be struct rb_root not {}".format(root.type))
 
     node = root['rb_node']
-    if node is 0:
+    if node == 0:
         return None
 
     while node['rb_left']:
@@ -33,7 +33,7 @@
         raise gdb.GdbError("Must be struct rb_root not {}".format(root.type))
 
     node = root['rb_node']
-    if node is 0:
+    if node == 0:
         return None
 
     while node['rb_right']:
diff --git a/scripts/gdb/linux/tasks.py b/scripts/gdb/linux/tasks.py
index 0301dc1..17ec19e 100644
--- a/scripts/gdb/linux/tasks.py
+++ b/scripts/gdb/linux/tasks.py
@@ -73,11 +73,12 @@
         super(LxPs, self).__init__("lx-ps", gdb.COMMAND_DATA)
 
     def invoke(self, arg, from_tty):
+        gdb.write("{:>10} {:>12} {:>7}\n".format("TASK", "PID", "COMM"))
         for task in task_lists():
-            gdb.write("{address} {pid} {comm}\n".format(
-                address=task,
-                pid=task["pid"],
-                comm=task["comm"].string()))
+            gdb.write("{} {:^5} {}\n".format(
+                task.format_string().split()[0],
+                task["pid"].format_string(),
+                task["comm"].string()))
 
 
 LxPs()
diff --git a/scripts/gdb/linux/utils.py b/scripts/gdb/linux/utils.py
index ea94221..ff7c179 100644
--- a/scripts/gdb/linux/utils.py
+++ b/scripts/gdb/linux/utils.py
@@ -123,6 +123,13 @@
         return read_u32(buffer, offset + 4) + (read_u32(buffer, offset) << 32)
 
 
+def read_ulong(buffer, offset):
+    if get_long_type().sizeof == 8:
+        return read_u64(buffer, offset)
+    else:
+        return read_u32(buffer, offset)
+
+
 target_arch = None
 
 
diff --git a/scripts/gen_autoksyms.sh b/scripts/gen_autoksyms.sh
new file mode 100755
index 0000000..d54dfba
--- /dev/null
+++ b/scripts/gen_autoksyms.sh
@@ -0,0 +1,55 @@
+#!/bin/sh
+# SPDX-License-Identifier: GPL-2.0-only
+
+# Create an autoksyms.h header file from the list of all module's needed symbols
+# as recorded on the second line of *.mod files and the user-provided symbol
+# whitelist.
+
+set -e
+
+output_file="$1"
+
+# Use "make V=1" to debug this script.
+case "$KBUILD_VERBOSE" in
+*1*)
+	set -x
+	;;
+esac
+
+# We need access to CONFIG_ symbols
+. include/config/auto.conf
+
+ksym_wl=/dev/null
+if [ -n "$CONFIG_UNUSED_KSYMS_WHITELIST" ]; then
+	# Use 'eval' to expand the whitelist path and check if it is relative
+	eval ksym_wl="$CONFIG_UNUSED_KSYMS_WHITELIST"
+	[ "${ksym_wl}" != "${ksym_wl#/}" ] || ksym_wl="$abs_srctree/$ksym_wl"
+	if [ ! -f "$ksym_wl" ] || [ ! -r "$ksym_wl" ]; then
+		echo "ERROR: '$ksym_wl' whitelist file not found" >&2
+		exit 1
+	fi
+fi
+
+# Generate a new ksym list file with symbols needed by the current
+# set of modules.
+cat > "$output_file" << EOT
+/*
+ * Automatically generated file; DO NOT EDIT.
+ */
+
+EOT
+
+[ -f modules.order ] && modlist=modules.order || modlist=/dev/null
+sed 's/ko$/mod/' $modlist |
+xargs -n1 sed -n -e '2{s/ /\n/g;/^$/!p;}' -- |
+cat - "$ksym_wl" |
+# Remove the dot prefix for ppc64; symbol names with a dot (.) hold entry
+# point addresses.
+sed -e 's/^\.//' |
+sort -u |
+sed -e 's/\(.*\)/#define __KSYM_\1 1/' >> "$output_file"
+
+# Special case for modversions (see modpost.c)
+if [ -n "$CONFIG_MODVERSIONS" ]; then
+	echo "#define __KSYM_module_layout 1" >> "$output_file"
+fi
diff --git a/scripts/gen_compile_commands.py b/scripts/gen_compile_commands.py
deleted file mode 100755
index c458696..0000000
--- a/scripts/gen_compile_commands.py
+++ /dev/null
@@ -1,151 +0,0 @@
-#!/usr/bin/env python
-# SPDX-License-Identifier: GPL-2.0
-#
-# Copyright (C) Google LLC, 2018
-#
-# Author: Tom Roeder <tmroeder@google.com>
-#
-"""A tool for generating compile_commands.json in the Linux kernel."""
-
-import argparse
-import json
-import logging
-import os
-import re
-
-_DEFAULT_OUTPUT = 'compile_commands.json'
-_DEFAULT_LOG_LEVEL = 'WARNING'
-
-_FILENAME_PATTERN = r'^\..*\.cmd$'
-_LINE_PATTERN = r'^cmd_[^ ]*\.o := (.* )([^ ]*\.c)$'
-_VALID_LOG_LEVELS = ['DEBUG', 'INFO', 'WARNING', 'ERROR', 'CRITICAL']
-
-# A kernel build generally has over 2000 entries in its compile_commands.json
-# database. If this code finds 300 or fewer, then warn the user that they might
-# not have all the .cmd files, and they might need to compile the kernel.
-_LOW_COUNT_THRESHOLD = 300
-
-
-def parse_arguments():
-    """Sets up and parses command-line arguments.
-
-    Returns:
-        log_level: A logging level to filter log output.
-        directory: The directory to search for .cmd files.
-        output: Where to write the compile-commands JSON file.
-    """
-    usage = 'Creates a compile_commands.json database from kernel .cmd files'
-    parser = argparse.ArgumentParser(description=usage)
-
-    directory_help = ('Path to the kernel source directory to search '
-                      '(defaults to the working directory)')
-    parser.add_argument('-d', '--directory', type=str, help=directory_help)
-
-    output_help = ('The location to write compile_commands.json (defaults to '
-                   'compile_commands.json in the search directory)')
-    parser.add_argument('-o', '--output', type=str, help=output_help)
-
-    log_level_help = ('The level of log messages to produce (one of ' +
-                      ', '.join(_VALID_LOG_LEVELS) + '; defaults to ' +
-                      _DEFAULT_LOG_LEVEL + ')')
-    parser.add_argument(
-        '--log_level', type=str, default=_DEFAULT_LOG_LEVEL,
-        help=log_level_help)
-
-    args = parser.parse_args()
-
-    log_level = args.log_level
-    if log_level not in _VALID_LOG_LEVELS:
-        raise ValueError('%s is not a valid log level' % log_level)
-
-    directory = args.directory or os.getcwd()
-    output = args.output or os.path.join(directory, _DEFAULT_OUTPUT)
-    directory = os.path.abspath(directory)
-
-    return log_level, directory, output
-
-
-def process_line(root_directory, file_directory, command_prefix, relative_path):
-    """Extracts information from a .cmd line and creates an entry from it.
-
-    Args:
-        root_directory: The directory that was searched for .cmd files. Usually
-            used directly in the "directory" entry in compile_commands.json.
-        file_directory: The path to the directory the .cmd file was found in.
-        command_prefix: The extracted command line, up to the last element.
-        relative_path: The .c file from the end of the extracted command.
-            Usually relative to root_directory, but sometimes relative to
-            file_directory and sometimes neither.
-
-    Returns:
-        An entry to append to compile_commands.
-
-    Raises:
-        ValueError: Could not find the extracted file based on relative_path and
-            root_directory or file_directory.
-    """
-    # The .cmd files are intended to be included directly by Make, so they
-    # escape the pound sign '#', either as '\#' or '$(pound)' (depending on the
-    # kernel version). The compile_commands.json file is not interepreted
-    # by Make, so this code replaces the escaped version with '#'.
-    prefix = command_prefix.replace('\#', '#').replace('$(pound)', '#')
-
-    cur_dir = root_directory
-    expected_path = os.path.join(cur_dir, relative_path)
-    if not os.path.exists(expected_path):
-        # Try using file_directory instead. Some of the tools have a different
-        # style of .cmd file than the kernel.
-        cur_dir = file_directory
-        expected_path = os.path.join(cur_dir, relative_path)
-        if not os.path.exists(expected_path):
-            raise ValueError('File %s not in %s or %s' %
-                             (relative_path, root_directory, file_directory))
-    return {
-        'directory': cur_dir,
-        'file': relative_path,
-        'command': prefix + relative_path,
-    }
-
-
-def main():
-    """Walks through the directory and finds and parses .cmd files."""
-    log_level, directory, output = parse_arguments()
-
-    level = getattr(logging, log_level)
-    logging.basicConfig(format='%(levelname)s: %(message)s', level=level)
-
-    filename_matcher = re.compile(_FILENAME_PATTERN)
-    line_matcher = re.compile(_LINE_PATTERN)
-
-    compile_commands = []
-    for dirpath, _, filenames in os.walk(directory):
-        for filename in filenames:
-            if not filename_matcher.match(filename):
-                continue
-            filepath = os.path.join(dirpath, filename)
-
-            with open(filepath, 'rt') as f:
-                for line in f:
-                    result = line_matcher.match(line)
-                    if not result:
-                        continue
-
-                    try:
-                        entry = process_line(directory, dirpath,
-                                             result.group(1), result.group(2))
-                        compile_commands.append(entry)
-                    except ValueError as err:
-                        logging.info('Could not add line from %s: %s',
-                                     filepath, err)
-
-    with open(output, 'wt') as f:
-        json.dump(compile_commands, f, indent=2, sort_keys=True)
-
-    count = len(compile_commands)
-    if count < _LOW_COUNT_THRESHOLD:
-        logging.warning(
-            'Found %s entries. Have you compiled the kernel?', count)
-
-
-if __name__ == '__main__':
-    main()
diff --git a/scripts/genksyms/.gitignore b/scripts/genksyms/.gitignore
index b119c7d..999af71 100644
--- a/scripts/genksyms/.gitignore
+++ b/scripts/genksyms/.gitignore
@@ -1 +1,2 @@
+# SPDX-License-Identifier: GPL-2.0-only
 genksyms
diff --git a/scripts/genksyms/Makefile b/scripts/genksyms/Makefile
index 78629f5..ce4f999 100644
--- a/scripts/genksyms/Makefile
+++ b/scripts/genksyms/Makefile
@@ -1,7 +1,6 @@
 # SPDX-License-Identifier: GPL-2.0
 
-hostprogs-y	:= genksyms
-always		:= $(hostprogs-y)
+hostprogs-always-y	+= genksyms
 
 genksyms-objs	:= genksyms.o parse.tab.o lex.lex.o
 
diff --git a/scripts/genksyms/keywords.c b/scripts/genksyms/keywords.c
index 7a85c4e..057c6ca 100644
--- a/scripts/genksyms/keywords.c
+++ b/scripts/genksyms/keywords.c
@@ -25,9 +25,9 @@
 	{ "__int128_t", BUILTIN_INT_KEYW },
 	{ "__uint128_t", BUILTIN_INT_KEYW },
 
-	// According to rth, c99 defines "_Bool", __restrict", __restrict__", "restrict".  KAO
+	// According to rth, c99 defines "_Bool", "__restrict", "__restrict__", "restrict".  KAO
 	{ "_Bool", BOOL_KEYW },
-	{ "_restrict", RESTRICT_KEYW },
+	{ "__restrict", RESTRICT_KEYW },
 	{ "__restrict__", RESTRICT_KEYW },
 	{ "restrict", RESTRICT_KEYW },
 	{ "asm", ASM_KEYW },
diff --git a/scripts/get_abi.pl b/scripts/get_abi.pl
index ba87b23..92d9aa6 100755
--- a/scripts/get_abi.pl
+++ b/scripts/get_abi.pl
@@ -2,18 +2,28 @@
 # SPDX-License-Identifier: GPL-2.0
 
 use strict;
+use warnings;
+use utf8;
 use Pod::Usage;
 use Getopt::Long;
 use File::Find;
 use Fcntl ':mode';
 
-my $help;
-my $man;
-my $debug;
+my $help = 0;
+my $man = 0;
+my $debug = 0;
+my $enable_lineno = 0;
 my $prefix="Documentation/ABI";
 
+#
+# If true, assumes that the description is formatted with ReST
+#
+my $description_is_rst = 1;
+
 GetOptions(
 	"debug|d+" => \$debug,
+	"enable-lineno" => \$enable_lineno,
+	"rst-source!" => \$description_is_rst,
 	"dir=s" => \$prefix,
 	'help|?' => \$help,
 	man => \$man
@@ -32,6 +42,7 @@
 require Data::Dumper if ($debug);
 
 my %data;
+my %symbols;
 
 #
 # Displays an error message, printing file name and line
@@ -39,7 +50,15 @@
 sub parse_error($$$$) {
 	my ($file, $ln, $msg, $data) = @_;
 
-	print STDERR "file $file#$ln: $msg at\n\t$data";
+	$data =~ s/\s+$/\n/;
+
+	print STDERR "Warning: file $file#$ln:\n\t$msg";
+
+	if ($data ne "") {
+		print STDERR ". Line\n\t\t$data";
+	} else {
+	    print STDERR "\n";
+	}
 }
 
 #
@@ -55,24 +74,28 @@
 	my $name = $file;
 	$name =~ s,.*/,,;
 
-	my $nametag = "File $name";
+	my $fn = $file;
+	$fn =~ s,Documentation/ABI/,,;
+
+	my $nametag = "File $fn";
 	$data{$nametag}->{what} = "File $name";
 	$data{$nametag}->{type} = "File";
 	$data{$nametag}->{file} = $name;
 	$data{$nametag}->{filepath} = $file;
 	$data{$nametag}->{is_file} = 1;
+	$data{$nametag}->{line_no} = 1;
 
 	my $type = $file;
 	$type =~ s,.*/(.*)/.*,$1,;
 
 	my $what;
 	my $new_what;
-	my $tag;
+	my $tag = "";
 	my $ln;
 	my $xrefs;
 	my $space;
 	my @labels;
-	my $label;
+	my $label = "";
 
 	print STDERR "Opening $file\n" if ($debug > 1);
 	open IN, $file;
@@ -95,16 +118,26 @@
 
 			# Invalid, but it is a common mistake
 			if ($new_tag eq "where") {
-				parse_error($file, $ln, "tag 'Where' is invalid. Should be 'What:' instead", $_);
+				parse_error($file, $ln, "tag 'Where' is invalid. Should be 'What:' instead", "");
 				$new_tag = "what";
 			}
 
 			if ($new_tag =~ m/what/) {
 				$space = "";
+				$content =~ s/[,.;]$//;
+
+				push @{$symbols{$content}->{file}}, " $file:" . ($ln - 1);
+
 				if ($tag =~ m/what/) {
 					$what .= ", " . $content;
 				} else {
-					parse_error($file, $ln, "What '$what' doesn't have a description", "") if ($what && !$data{$what}->{description});
+					if ($what) {
+						parse_error($file, $ln, "What '$what' doesn't have a description", "") if (!$data{$what}->{description});
+
+						foreach my $w(split /, /, $what) {
+							$symbols{$w}->{xref} = $what;
+						};
+					}
 
 					$what = $content;
 					$label = $content;
@@ -113,7 +146,7 @@
 				push @labels, [($content, $label)];
 				$tag = $new_tag;
 
-				push @{$data{$nametag}->{xrefs}}, [($content, $label)] if ($data{$nametag}->{what});
+				push @{$data{$nametag}->{symbols}}, $content if ($data{$nametag}->{what});
 				next;
 			}
 
@@ -121,30 +154,44 @@
 				$tag = $new_tag;
 
 				if ($new_what) {
-					@{$data{$what}->{label}} = @labels if ($data{$nametag}->{what});
+					@{$data{$what}->{label_list}} = @labels if ($data{$nametag}->{what});
 					@labels = ();
 					$label = "";
 					$new_what = 0;
 
 					$data{$what}->{type} = $type;
-					$data{$what}->{file} = $name;
-					$data{$what}->{filepath} = $file;
+					if (!defined($data{$what}->{file})) {
+						$data{$what}->{file} = $name;
+						$data{$what}->{filepath} = $file;
+					} else {
+						if ($name ne $data{$what}->{file}) {
+							$data{$what}->{file} .= " " . $name;
+							$data{$what}->{filepath} .= " " . $file;
+						}
+					}
 					print STDERR "\twhat: $what\n" if ($debug > 1);
+					$data{$what}->{line_no} = $ln;
+				} else {
+					$data{$what}->{line_no} = $ln if (!defined($data{$what}->{line_no}));
 				}
 
 				if (!$what) {
 					parse_error($file, $ln, "'What:' should come first:", $_);
 					next;
 				}
-				if ($tag eq "description") {
-					next if ($content =~ m/^\s*$/);
-					if ($content =~ m/^(\s*)(.*)/) {
-						my $new_content = $2;
-						$space = $new_tag . $sep . $1;
-						while ($space =~ s/\t+/' ' x (length($&) * 8 - length($`) % 8)/e) {}
-						$space =~ s/./ /g;
-						$data{$what}->{$tag} .= "$new_content\n";
+				if ($new_tag eq "description") {
+					$sep =~ s,:, ,;
+					$content = ' ' x length($new_tag) . $sep . $content;
+					while ($content =~ s/\t+/' ' x (length($&) * 8 - length($`) % 8)/e) {}
+					if ($content =~ m/^(\s*)(\S.*)$/) {
+						# Preserve initial spaces for the first line
+						$space = $1;
+						$content = "$2\n";
+						$data{$what}->{$tag} .= $content;
+					} else {
+						undef($space);
 					}
+
 				} else {
 					$data{$what}->{$tag} = $content;
 				}
@@ -159,29 +206,24 @@
 		}
 
 		if ($tag eq "description") {
-			if (!$data{$what}->{description}) {
-				next if (m/^\s*\n/);
-				if (m/^(\s*)(.*)/) {
+			my $content = $_;
+			while ($content =~ s/\t+/' ' x (length($&) * 8 - length($`) % 8)/e) {}
+			if (m/^\s*\n/) {
+				$data{$what}->{$tag} .= "\n";
+				next;
+			}
+
+			if (!defined($space)) {
+				# Preserve initial spaces for the first line
+				if ($content =~ m/^(\s*)(\S.*)$/) {
 					$space = $1;
-					while ($space =~ s/\t+/' ' x (length($&) * 8 - length($`) % 8)/e) {}
-					$data{$what}->{$tag} .= "$2\n";
+					$content = "$2\n";
 				}
 			} else {
-				my $content = $_;
-				if (m/^\s*\n/) {
-					$data{$what}->{$tag} .= $content;
-					next;
-				}
-
-				while ($content =~ s/\t+/' ' x (length($&) * 8 - length($`) % 8)/e) {}
 				$space = "" if (!($content =~ s/^($space)//));
-
-				# Compress spaces with tabs
-				$content =~ s<^ {8}> <\t>;
-				$content =~ s<^ {1,7}\t> <\t>;
-				$content =~ s< {1,7}\t> <\t>;
-				$data{$what}->{$tag} .= $content;
 			}
+			$data{$what}->{$tag} .= $content;
+
 			next;
 		}
 		if (m/^\s*(.*)/) {
@@ -191,32 +233,26 @@
 		}
 
 		# Everything else is error
-		parse_error($file, $ln, "Unexpected line:", $_);
+		parse_error($file, $ln, "Unexpected content", $_);
 	}
-	$data{$nametag}->{description} =~ s/^\n+//;
+	$data{$nametag}->{description} =~ s/^\n+// if ($data{$nametag}->{description});
+	if ($what) {
+		parse_error($file, $ln, "What '$what' doesn't have a description", "") if (!$data{$what}->{description});
+
+		foreach my $w(split /, /,$what) {
+			$symbols{$w}->{xref} = $what;
+		};
+	}
 	close IN;
 }
 
-#
-# Outputs the book on ReST format
-#
+sub create_labels {
+	my %labels;
 
-my %labels;
+	foreach my $what (keys %data) {
+		next if ($data{$what}->{file} eq "File");
 
-sub output_rest {
-	foreach my $what (sort {
-				($data{$a}->{type} eq "File") cmp ($data{$b}->{type} eq "File") ||
-				$a cmp $b
-			       } keys %data) {
-		my $type = $data{$what}->{type};
-		my $file = $data{$what}->{file};
-		my $filepath = $data{$what}->{filepath};
-
-		my $w = $what;
-		$w =~ s/([\(\)\_\-\*\=\^\~\\])/\\$1/g;
-
-
-		foreach my $p (@{$data{$what}->{label}}) {
+		foreach my $p (@{$data{$what}->{label_list}}) {
 			my ($content, $label) = @{$p};
 			$label = "abi_" . $label . " ";
 			$label =~ tr/A-Z/a-z/;
@@ -233,81 +269,167 @@
 			}
 			$labels{$label} = 1;
 
-			$data{$what}->{label} .= $label;
-
-			printf ".. _%s:\n\n", $label;
+			$data{$what}->{label} = $label;
 
 			# only one label is enough
 			last;
 		}
+	}
+}
 
+#
+# Outputs the book on ReST format
+#
 
-		$filepath =~ s,.*/(.*/.*),\1,;;
-		$filepath =~ s,[/\-],_,g;;
-		my $fileref = "abi_file_".$filepath;
+# \b doesn't work well with paths. So, we need to define something else
+my $bondary = qr { (?<![\w\/\`\{])(?=[\w\/\`\{])|(?<=[\w\/\`\{])(?![\w\/\`\{]) }x;
 
-		if ($type eq "File") {
-			my $bar = $w;
-			$bar =~ s/./-/g;
+sub output_rest {
+	create_labels();
 
-			print ".. _$fileref:\n\n";
-			print "$w\n$bar\n\n";
-		} else {
-			my @names = split /\s*,\s*/,$w;
+	my $part = "";
 
+	foreach my $what (sort {
+				($data{$a}->{type} eq "File") cmp ($data{$b}->{type} eq "File") ||
+				$a cmp $b
+			       } keys %data) {
+		my $type = $data{$what}->{type};
+
+		my @file = split / /, $data{$what}->{file};
+		my @filepath = split / /, $data{$what}->{filepath};
+
+		if ($enable_lineno) {
+			printf "#define LINENO %s%s#%s\n\n",
+			       $prefix, $file[0],
+			       $data{$what}->{line_no};
+		}
+
+		my $w = $what;
+		$w =~ s/([\(\)\_\-\*\=\^\~\\])/\\$1/g;
+
+		if ($type ne "File") {
+			my $cur_part = $what;
+			if ($what =~ '/') {
+				if ($what =~ m#^(\/?(?:[\w\-]+\/?){1,2})#) {
+					$cur_part = "Symbols under $1";
+					$cur_part =~ s,/$,,;
+				}
+			}
+
+			if ($cur_part ne "" && $part ne $cur_part) {
+			    $part = $cur_part;
+			    my $bar = $part;
+			    $bar =~ s/./-/g;
+			    print "$part\n$bar\n\n";
+			}
+
+			printf ".. _%s:\n\n", $data{$what}->{label};
+
+			my @names = split /, /,$w;
 			my $len = 0;
 
 			foreach my $name (@names) {
+				$name = "**$name**";
 				$len = length($name) if (length($name) > $len);
 			}
 
-			print "What:\n\n";
-
 			print "+-" . "-" x $len . "-+\n";
 			foreach my $name (@names) {
 				printf "| %s", $name . " " x ($len - length($name)) . " |\n";
 				print "+-" . "-" x $len . "-+\n";
 			}
+
 			print "\n";
 		}
 
-		print "Defined on file :ref:`$file <$fileref>`\n\n" if ($type ne "File");
+		for (my $i = 0; $i < scalar(@filepath); $i++) {
+			my $path = $filepath[$i];
+			my $f = $file[$i];
 
-		my $desc = $data{$what}->{description};
-		$desc =~ s/^\s+//;
+			$path =~ s,.*/(.*/.*),$1,;;
+			$path =~ s,[/\-],_,g;;
+			my $fileref = "abi_file_".$path;
 
-		# Remove title markups from the description, as they won't work
-		$desc =~ s/\n[\-\*\=\^\~]+\n/\n/g;
+			if ($type eq "File") {
+				print ".. _$fileref:\n\n";
+			} else {
+				print "Defined on file :ref:`$f <$fileref>`\n\n";
+			}
+		}
+
+		if ($type eq "File") {
+			my $bar = $w;
+			$bar =~ s/./-/g;
+			print "$w\n$bar\n\n";
+		}
+
+		my $desc = "";
+		$desc = $data{$what}->{description} if (defined($data{$what}->{description}));
+		$desc =~ s/\s+$/\n/;
 
 		if (!($desc =~ /^\s*$/)) {
-			if ($desc =~ m/\:\n/ || $desc =~ m/\n[\t ]+/  || $desc =~ m/[\x00-\x08\x0b-\x1f\x7b-\xff]/) {
-				# put everything inside a code block
-				$desc =~ s/\n/\n /g;
+			if ($description_is_rst) {
+				# Remove title markups from the description
+				# Having titles inside ABI files will only work if extra
+				# care would be taken in order to strictly follow the same
+				# level order for each markup.
+				$desc =~ s/\n[\-\*\=\^\~]+\n/\n\n/g;
 
-				print "::\n\n";
-				print " $desc\n\n";
-			} else {
-				# Escape any special chars from description
-				$desc =~s/([\x00-\x08\x0b-\x1f\x21-\x2a\x2d\x2f\x3c-\x40\x5c\x5e-\x60\x7b-\xff])/\\$1/g;
+				# Enrich text by creating cross-references
+
+				$desc =~ s,Documentation/(?!devicetree)(\S+)\.rst,:doc:`/$1`,g;
+
+				my @matches = $desc =~ m,Documentation/ABI/([\w\/\-]+),;
+				foreach my $f (@matches) {
+					my $xref = $f;
+					my $path = $f;
+					$path =~ s,.*/(.*/.*),$1,;;
+					$path =~ s,[/\-],_,g;;
+					$xref .= " <abi_file_" . $path . ">";
+					$desc =~ s,\bDocumentation/ABI/$f\b,:ref:`$xref`,g;
+				}
+
+				@matches = $desc =~ m,$bondary(/sys/[^\s\.\,\;\:\*\s\`\'\(\)]+)$bondary,;
+
+				foreach my $s (@matches) {
+					if (defined($data{$s}) && defined($data{$s}->{label})) {
+						my $xref = $s;
+
+						$xref =~ s/([\x00-\x1f\x21-\x2f\x3a-\x40\x7b-\xff])/\\$1/g;
+						$xref = ":ref:`$xref <" . $data{$s}->{label} . ">`";
+
+						$desc =~ s,$bondary$s$bondary,$xref,g;
+					}
+				}
 
 				print "$desc\n\n";
+			} else {
+				$desc =~ s/^\s+//;
+
+				# Remove title markups from the description, as they won't work
+				$desc =~ s/\n[\-\*\=\^\~]+\n/\n\n/g;
+
+				if ($desc =~ m/\:\n/ || $desc =~ m/\n[\t ]+/  || $desc =~ m/[\x00-\x08\x0b-\x1f\x7b-\xff]/) {
+					# put everything inside a code block
+					$desc =~ s/\n/\n /g;
+
+					print "::\n\n";
+					print " $desc\n\n";
+				} else {
+					# Escape any special chars from description
+					$desc =~s/([\x00-\x08\x0b-\x1f\x21-\x2a\x2d\x2f\x3c-\x40\x5c\x5e-\x60\x7b-\xff])/\\$1/g;
+					print "$desc\n\n";
+				}
 			}
 		} else {
 			print "DESCRIPTION MISSING for $what\n\n" if (!$data{$what}->{is_file});
 		}
 
-		if ($data{$what}->{xrefs}) {
+		if ($data{$what}->{symbols}) {
 			printf "Has the following ABI:\n\n";
 
-			foreach my $p(@{$data{$what}->{xrefs}}) {
-				my ($content, $label) = @{$p};
-				$label = "abi_" . $label . " ";
-				$label =~ tr/A-Z/a-z/;
-
-				# Convert special chars to "_"
-				$label =~s/([\x00-\x2f\x3a-\x40\x5b-\x60\x7b-\xff])/_/g;
-				$label =~ s,_+,_,g;
-				$label =~ s,_$,,;
+			foreach my $content(@{$data{$what}->{symbols}}) {
+				my $label = $data{$symbols{$content}->{xref}}->{label};
 
 				# Escape special chars from content
 				$content =~s/([\x00-\x1f\x21-\x2f\x3a-\x40\x7b-\xff])/\\$1/g;
@@ -315,6 +437,14 @@
 				print "- :ref:`$content <$label>`\n\n";
 			}
 		}
+
+		if (defined($data{$what}->{users})) {
+			my $users = $data{$what}->{users};
+
+			$users =~ s/\n/\n\t/g;
+			printf "Users:\n\t%s\n\n", $users if ($users ne "");
+		}
+
 	}
 }
 
@@ -335,27 +465,34 @@
 
 		print "\n$what\n$bar\n\n";
 
-		my $kernelversion = $data{$what}->{kernelversion};
-		my $contact = $data{$what}->{contact};
-		my $users = $data{$what}->{users};
-		my $date = $data{$what}->{date};
-		my $desc = $data{$what}->{description};
-		$kernelversion =~ s/^\s+//;
-		$contact =~ s/^\s+//;
-		$users =~ s/^\s+//;
-		$users =~ s/\n//g;
-		$date =~ s/^\s+//;
-		$desc =~ s/^\s+//;
+		my $kernelversion = $data{$what}->{kernelversion} if (defined($data{$what}->{kernelversion}));
+		my $contact = $data{$what}->{contact} if (defined($data{$what}->{contact}));
+		my $users = $data{$what}->{users} if (defined($data{$what}->{users}));
+		my $date = $data{$what}->{date} if (defined($data{$what}->{date}));
+		my $desc = $data{$what}->{description} if (defined($data{$what}->{description}));
+
+		$kernelversion =~ s/^\s+// if ($kernelversion);
+		$contact =~ s/^\s+// if ($contact);
+		if ($users) {
+			$users =~ s/^\s+//;
+			$users =~ s/\n//g;
+		}
+		$date =~ s/^\s+// if ($date);
+		$desc =~ s/^\s+// if ($desc);
 
 		printf "Kernel version:\t\t%s\n", $kernelversion if ($kernelversion);
 		printf "Date:\t\t\t%s\n", $date if ($date);
 		printf "Contact:\t\t%s\n", $contact if ($contact);
 		printf "Users:\t\t\t%s\n", $users if ($users);
-		print "Defined on file:\t$file\n\n";
+		print "Defined on file(s):\t$file\n\n";
 		print "Description:\n\n$desc";
 	}
 }
 
+# Ensure that the prefix will always end with a slash
+# While this is not needed for find, it makes the patch nicer
+# with --enable-lineno
+$prefix =~ s,/?$,/,;
 
 #
 # Parses all ABI files located at $prefix dir
@@ -367,12 +504,23 @@
 #
 # Handles the command
 #
-if ($cmd eq "rest") {
-	output_rest;
-} elsif ($cmd eq "search") {
+if ($cmd eq "search") {
 	search_symbols;
-}
+} else {
+	if ($cmd eq "rest") {
+		output_rest;
+	}
 
+	# Warn about duplicated ABI entries
+	foreach my $what(sort keys %symbols) {
+		my @files = @{$symbols{$what}->{file}};
+
+		next if (scalar(@files) == 1);
+
+		printf STDERR "Warning: $what is defined %d times: @files\n",
+		    scalar(@files);
+	}
+}
 
 __END__
 
@@ -382,7 +530,8 @@
 
 =head1 SYNOPSIS
 
-B<abi_book.pl> [--debug] [--man] [--help] [--dir=<dir>] <COMAND> [<ARGUMENT>]
+B<abi_book.pl> [--debug] [--enable-lineno] [--man] [--help]
+	       [--(no-)rst-source] [--dir=<dir>] <COMAND> [<ARGUMENT>]
 
 Where <COMMAND> can be:
 
@@ -405,6 +554,17 @@
 Changes the location of the ABI search. By default, it uses
 the Documentation/ABI directory.
 
+=item B<--rst-source> and B<--no-rst-source>
+
+The input file may be using ReST syntax or not. Those two options allow
+selecting between a rst-compliant source ABI (--rst-source), or a
+plain text that may be violating ReST spec, so it requres some escaping
+logic (--no-rst-source).
+
+=item B<--enable-lineno>
+
+Enable output of #define LINENO lines.
+
 =item B<--debug>
 
 Put the script in verbose mode, useful for debugging. Can be called multiple
diff --git a/scripts/get_maintainer.pl b/scripts/get_maintainer.pl
index 5ef5921..2075db0 100755
--- a/scripts/get_maintainer.pl
+++ b/scripts/get_maintainer.pl
@@ -19,6 +19,7 @@
 use Getopt::Long qw(:config no_auto_abbrev);
 use Cwd;
 use File::Find;
+use File::Spec::Functions;
 
 my $cur_path = fastgetcwd() . '/';
 my $lk_path = "./";
@@ -26,6 +27,7 @@
 my $email_usename = 1;
 my $email_maintainer = 1;
 my $email_reviewer = 1;
+my $email_fixes = 1;
 my $email_list = 1;
 my $email_moderated_list = 1;
 my $email_subscriber_list = 0;
@@ -56,7 +58,7 @@
 my $letters = "";
 my $keywords = 1;
 my $sections = 0;
-my $file_emails = 0;
+my $email_file_emails = 0;
 my $from_filename = 0;
 my $pattern_depth = 0;
 my $self_test = undef;
@@ -68,6 +70,12 @@
 
 my $exit = 0;
 
+my @files = ();
+my @fixes = ();			# If a patch description includes Fixes: lines
+my @range = ();
+my @keyword_tvi = ();
+my @file_emails = ();
+
 my %commit_author_hash;
 my %commit_signer_hash;
 
@@ -249,6 +257,7 @@
 		'r!' => \$email_reviewer,
 		'n!' => \$email_usename,
 		'l!' => \$email_list,
+		'fixes!' => \$email_fixes,
 		'moderated!' => \$email_moderated_list,
 		's!' => \$email_subscriber_list,
 		'multiline!' => \$output_multiline,
@@ -264,7 +273,7 @@
 		'pattern-depth=i' => \$pattern_depth,
 		'k|keywords!' => \$keywords,
 		'sections!' => \$sections,
-		'fe|file-emails!' => \$file_emails,
+		'fe|file-emails!' => \$email_file_emails,
 		'f|file' => \$from_filename,
 		'find-maintainer-files' => \$find_maintainer_files,
 		'mpath|maintainer-path=s' => \$maintainer_path,
@@ -422,6 +431,22 @@
     }
 }
 
+sub maintainers_in_file {
+    my ($file) = @_;
+
+    return if ($file =~ m@\bMAINTAINERS$@);
+
+    if (-f $file && ($email_file_emails || $file =~ /\.yaml$/)) {
+	open(my $f, '<', $file)
+	    or die "$P: Can't open $file: $!\n";
+	my $text = do { local($/) ; <$f> };
+	close($f);
+
+	my @poss_addr = $text =~ m$[A-Za-zÀ-ÿ\"\' \,\.\+-]*\s*[\,]*\s*[\(\<\{]{0,1}[A-Za-z0-9_\.\+-]+\@[A-Za-z0-9\.-]+\.[A-Za-z0-9]+[\)\>\}]{0,1}$g;
+	push(@file_emails, clean_file_emails(@poss_addr));
+    }
+}
+
 #
 # Read mail address map
 #
@@ -502,17 +527,13 @@
 
 ## use the filenames on the command line or find the filenames in the patchfiles
 
-my @files = ();
-my @range = ();
-my @keyword_tvi = ();
-my @file_emails = ();
-
 if (!@ARGV) {
     push(@ARGV, "&STDIN");
 }
 
 foreach my $file (@ARGV) {
     if ($file ne "&STDIN") {
+	$file = canonpath($file);
 	##if $file is a directory and it lacks a trailing slash, add one
 	if ((-d $file)) {
 	    $file =~ s@([^/])$@$1/@;
@@ -520,11 +541,14 @@
 	    die "$P: file '${file}' not found\n";
 	}
     }
+    if ($from_filename && (vcs_exists() && !vcs_file_exists($file))) {
+	warn "$P: file '$file' not found in version control $!\n";
+    }
     if ($from_filename || ($file ne "&STDIN" && vcs_file_exists($file))) {
 	$file =~ s/^\Q${cur_path}\E//;	#strip any absolute path
 	$file =~ s/^\Q${lk_path}\E//;	#or the path to the lk tree
 	push(@files, $file);
-	if ($file ne "MAINTAINERS" && -f $file && ($keywords || $file_emails)) {
+	if ($file ne "MAINTAINERS" && -f $file && $keywords) {
 	    open(my $f, '<', $file)
 		or die "$P: Can't open $file: $!\n";
 	    my $text = do { local($/) ; <$f> };
@@ -536,10 +560,6 @@
 		    }
 		}
 	    }
-	    if ($file_emails) {
-		my @poss_addr = $text =~ m$[A-Za-zÀ-ÿ\"\' \,\.\+-]*\s*[\,]*\s*[\(\<\{]{0,1}[A-Za-z0-9_\.\+-]+\@[A-Za-z0-9\.-]+\.[A-Za-z0-9]+[\)\>\}]{0,1}$g;
-		push(@file_emails, clean_file_emails(@poss_addr));
-	    }
 	}
     } else {
 	my $file_cnt = @files;
@@ -568,6 +588,8 @@
 		my $filename2 = $2;
 		push(@files, $filename1);
 		push(@files, $filename2);
+	    } elsif (m/^Fixes:\s+([0-9a-fA-F]{6,40})/) {
+		push(@fixes, $1) if ($email_fixes);
 	    } elsif (m/^\+\+\+\s+(\S+)/ or m/^---\s+(\S+)/) {
 		my $filename = $1;
 		$filename =~ s@^[^/]*/@@;
@@ -598,6 +620,7 @@
 }
 
 @file_emails = uniq(@file_emails);
+@fixes = uniq(@fixes);
 
 my %email_hash_name;
 my %email_hash_address;
@@ -612,7 +635,6 @@
 my %deduplicate_address_hash = ();
 
 my @maintainers = get_maintainers();
-
 if (@maintainers) {
     @maintainers = merge_email(@maintainers);
     output(@maintainers);
@@ -918,6 +940,8 @@
 		print("\n");
 	    }
 	}
+
+	maintainers_in_file($file);
     }
 
     if ($keywords) {
@@ -933,8 +957,10 @@
 
     foreach my $file (@files) {
 	if ($email &&
-	    ($email_git || ($email_git_fallback &&
-			    !$exact_pattern_match_hash{$file}))) {
+	    ($email_git ||
+	     ($email_git_fallback &&
+	      $file !~ /MAINTAINERS$/ &&
+	      !$exact_pattern_match_hash{$file}))) {
 	    vcs_file_signoffs($file);
 	}
 	if ($email && $email_git_blame) {
@@ -965,6 +991,10 @@
 	}
     }
 
+    foreach my $fix (@fixes) {
+	vcs_add_commit_signers($fix, "blamed_fixes");
+    }
+
     my @to = ();
     if ($email || $email_list) {
 	if ($email) {
@@ -1031,6 +1061,7 @@
     --roles => show roles (status:subsystem, git-signer, list, etc...)
     --rolestats => show roles and statistics (commits/total_commits, %)
     --file-emails => add email addresses found in -f file (default: 0 (off))
+    --fixes => for patches, add signatures of commits with 'Fixes: <commit>' (default: 1 (on))
   --scm => print SCM tree(s) if any
   --status => print status if any
   --subsystem => print subsystem name if any
@@ -1331,35 +1362,11 @@
 		    }
 		}
 	    } elsif ($ptype eq "M") {
-		my ($name, $address) = parse_email($pvalue);
-		if ($name eq "") {
-		    if ($i > 0) {
-			my $tv = $typevalue[$i - 1];
-			if ($tv =~ m/^([A-Z]):\s*(.*)/) {
-			    if ($1 eq "P") {
-				$name = $2;
-				$pvalue = format_email($name, $address, $email_usename);
-			    }
-			}
-		    }
-		}
 		if ($email_maintainer) {
 		    my $role = get_maintainer_role($i);
 		    push_email_addresses($pvalue, $role);
 		}
 	    } elsif ($ptype eq "R") {
-		my ($name, $address) = parse_email($pvalue);
-		if ($name eq "") {
-		    if ($i > 0) {
-			my $tv = $typevalue[$i - 1];
-			if ($tv =~ m/^([A-Z]):\s*(.*)/) {
-			    if ($1 eq "P") {
-				$name = $2;
-				$pvalue = format_email($name, $address, $email_usename);
-			    }
-			}
-		    }
-		}
 		if ($email_reviewer) {
 		    my $subsystem = get_subsystem_name($i);
 		    push_email_addresses($pvalue, "reviewer:$subsystem");
@@ -1730,6 +1737,32 @@
     return $vcs_used == 2;
 }
 
+sub vcs_add_commit_signers {
+    return if (!vcs_exists());
+
+    my ($commit, $desc) = @_;
+    my $commit_count = 0;
+    my $commit_authors_ref;
+    my $commit_signers_ref;
+    my $stats_ref;
+    my @commit_authors = ();
+    my @commit_signers = ();
+    my $cmd;
+
+    $cmd = $VCS_cmds{"find_commit_signers_cmd"};
+    $cmd =~ s/(\$\w+)/$1/eeg;	#substitute variables in $cmd
+
+    ($commit_count, $commit_signers_ref, $commit_authors_ref, $stats_ref) = vcs_find_signers($cmd, "");
+    @commit_authors = @{$commit_authors_ref} if defined $commit_authors_ref;
+    @commit_signers = @{$commit_signers_ref} if defined $commit_signers_ref;
+
+    foreach my $signer (@commit_signers) {
+	$signer = deduplicate_email($signer);
+    }
+
+    vcs_assign($desc, 1, @commit_signers);
+}
+
 sub interactive_get_maintainers {
     my ($list_ref) = @_;
     my @list = @$list_ref;
@@ -1823,7 +1856,7 @@
 tg toggle git entries
 tl toggle open list entries
 ts toggle subscriber list entries
-f  emails in file       [$file_emails]
+f  emails in file       [$email_file_emails]
 k  keywords in file     [$keywords]
 r  remove duplicates    [$email_remove_duplicates]
 p# pattern match depth  [$pattern_depth]
@@ -1948,7 +1981,7 @@
 		bool_invert(\$email_git_all_signature_types);
 		$rerun = 1;
 	    } elsif ($sel eq "f") {
-		bool_invert(\$file_emails);
+		bool_invert(\$email_file_emails);
 		$rerun = 1;
 	    } elsif ($sel eq "r") {
 		bool_invert(\$email_remove_duplicates);
diff --git a/scripts/headers_install.sh b/scripts/headers_install.sh
index 94a8335..dd554bd 100755
--- a/scripts/headers_install.sh
+++ b/scripts/headers_install.sh
@@ -11,7 +11,7 @@
 	echo "asm/inline/volatile keywords."
 	echo
 	echo "INFILE: header file to operate on"
-	echo "OUTFILE: output file which the processed header is writen to"
+	echo "OUTFILE: output file which the processed header is written to"
 
 	exit 1
 fi
@@ -81,19 +81,14 @@
 arch/m68k/include/uapi/asm/ptrace.h:CONFIG_COLDFIRE
 arch/nios2/include/uapi/asm/swab.h:CONFIG_NIOS2_CI_SWAB_NO
 arch/nios2/include/uapi/asm/swab.h:CONFIG_NIOS2_CI_SWAB_SUPPORT
-arch/sh/include/uapi/asm/ptrace.h:CONFIG_CPU_SH5
-arch/sh/include/uapi/asm/sigcontext.h:CONFIG_CPU_SH5
-arch/sh/include/uapi/asm/stat.h:CONFIG_CPU_SH5
 arch/x86/include/uapi/asm/auxvec.h:CONFIG_IA32_EMULATION
 arch/x86/include/uapi/asm/auxvec.h:CONFIG_X86_64
 arch/x86/include/uapi/asm/mman.h:CONFIG_X86_INTEL_MEMORY_PROTECTION_KEYS
 include/uapi/asm-generic/fcntl.h:CONFIG_64BIT
 include/uapi/linux/atmdev.h:CONFIG_COMPAT
-include/uapi/linux/elfcore.h:CONFIG_BINFMT_ELF_FDPIC
 include/uapi/linux/eventpoll.h:CONFIG_PM_SLEEP
 include/uapi/linux/hw_breakpoint.h:CONFIG_HAVE_MIXED_BREAKPOINTS_REGS
 include/uapi/linux/pktcdvd.h:CONFIG_CDROM_PKTCDVD_WCACHE
-include/uapi/linux/raw.h:CONFIG_MAX_RAW_DEVS
 "
 
 for c in $configs
diff --git a/scripts/jobserver-exec b/scripts/jobserver-exec
new file mode 100755
index 0000000..0fdb31a
--- /dev/null
+++ b/scripts/jobserver-exec
@@ -0,0 +1,66 @@
+#!/usr/bin/env python
+# SPDX-License-Identifier: GPL-2.0+
+#
+# This determines how many parallel tasks "make" is expecting, as it is
+# not exposed via an special variables, reserves them all, runs a subprocess
+# with PARALLELISM environment variable set, and releases the jobs back again.
+#
+# https://www.gnu.org/software/make/manual/html_node/POSIX-Jobserver.html#POSIX-Jobserver
+from __future__ import print_function
+import os, sys, errno
+import subprocess
+
+# Extract and prepare jobserver file descriptors from envirnoment.
+claim = 0
+jobs = b""
+try:
+	# Fetch the make environment options.
+	flags = os.environ['MAKEFLAGS']
+
+	# Look for "--jobserver=R,W"
+	# Note that GNU Make has used --jobserver-fds and --jobserver-auth
+	# so this handles all of them.
+	opts = [x for x in flags.split(" ") if x.startswith("--jobserver")]
+
+	# Parse out R,W file descriptor numbers and set them nonblocking.
+	fds = opts[0].split("=", 1)[1]
+	reader, writer = [int(x) for x in fds.split(",", 1)]
+	# Open a private copy of reader to avoid setting nonblocking
+	# on an unexpecting process with the same reader fd.
+	reader = os.open("/proc/self/fd/%d" % (reader),
+			 os.O_RDONLY | os.O_NONBLOCK)
+
+	# Read out as many jobserver slots as possible.
+	while True:
+		try:
+			slot = os.read(reader, 8)
+			jobs += slot
+		except (OSError, IOError) as e:
+			if e.errno == errno.EWOULDBLOCK:
+				# Stop at the end of the jobserver queue.
+				break
+			# If something went wrong, give back the jobs.
+			if len(jobs):
+				os.write(writer, jobs)
+			raise e
+	# Add a bump for our caller's reserveration, since we're just going
+	# to sit here blocked on our child.
+	claim = len(jobs) + 1
+except (KeyError, IndexError, ValueError, OSError, IOError) as e:
+	# Any missing environment strings or bad fds should result in just
+	# not being parallel.
+	pass
+
+# We can only claim parallelism if there was a jobserver (i.e. a top-level
+# "-jN" argument) and there were no other failures. Otherwise leave out the
+# environment variable and let the child figure out what is best.
+if claim > 0:
+	os.environ['PARALLELISM'] = '%d' % (claim)
+
+rc = subprocess.call(sys.argv[1:])
+
+# Return all the reserved slots.
+if len(jobs):
+	os.write(writer, jobs)
+
+sys.exit(rc)
diff --git a/scripts/kallsyms.c b/scripts/kallsyms.c
index fb15f09..54ad86d 100644
--- a/scripts/kallsyms.c
+++ b/scripts/kallsyms.c
@@ -18,15 +18,14 @@
  *
  */
 
+#include <stdbool.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
 #include <ctype.h>
 #include <limits.h>
 
-#ifndef ARRAY_SIZE
 #define ARRAY_SIZE(arr) (sizeof(arr) / sizeof(arr[0]))
-#endif
 
 #define KSYM_NAME_LEN		128
 
@@ -34,8 +33,8 @@
 	unsigned long long addr;
 	unsigned int len;
 	unsigned int start_pos;
-	unsigned char *sym;
 	unsigned int percpu_absolute;
+	unsigned char sym[];
 };
 
 struct addr_range {
@@ -56,11 +55,11 @@
 	"__per_cpu_start", "__per_cpu_end", -1ULL, 0
 };
 
-static struct sym_entry *table;
+static struct sym_entry **table;
 static unsigned int table_size, table_cnt;
-static int all_symbols = 0;
-static int absolute_percpu = 0;
-static int base_relative = 0;
+static int all_symbols;
+static int absolute_percpu;
+static int base_relative;
 
 static int token_profit[0x10000];
 
@@ -76,18 +75,109 @@
 	exit(1);
 }
 
-/*
- * This ignores the intensely annoying "mapping symbols" found
- * in ARM ELF files: $a, $t and $d.
- */
-static int is_arm_mapping_symbol(const char *str)
+static char *sym_name(const struct sym_entry *s)
 {
-	return str[0] == '$' && strchr("axtd", str[1])
-	       && (str[2] == '\0' || str[2] == '.');
+	return (char *)s->sym + 1;
 }
 
-static int check_symbol_range(const char *sym, unsigned long long addr,
-			      struct addr_range *ranges, int entries)
+static bool is_ignored_symbol(const char *name, char type)
+{
+	/* Symbol names that exactly match to the following are ignored.*/
+	static const char * const ignored_symbols[] = {
+		/*
+		 * Symbols which vary between passes. Passes 1 and 2 must have
+		 * identical symbol lists. The kallsyms_* symbols below are
+		 * only added after pass 1, they would be included in pass 2
+		 * when --all-symbols is specified so exclude them to get a
+		 * stable symbol list.
+		 */
+		"kallsyms_addresses",
+		"kallsyms_offsets",
+		"kallsyms_relative_base",
+		"kallsyms_num_syms",
+		"kallsyms_names",
+		"kallsyms_markers",
+		"kallsyms_token_table",
+		"kallsyms_token_index",
+		/* Exclude linker generated symbols which vary between passes */
+		"_SDA_BASE_",		/* ppc */
+		"_SDA2_BASE_",		/* ppc */
+		NULL
+	};
+
+	/* Symbol names that begin with the following are ignored.*/
+	static const char * const ignored_prefixes[] = {
+		"$",			/* local symbols for ARM, MIPS, etc. */
+		".LASANPC",		/* s390 kasan local symbols */
+		"__crc_",		/* modversions */
+		"__efistub_",		/* arm64 EFI stub namespace */
+		"__kvm_nvhe_",		/* arm64 non-VHE KVM namespace */
+		"__AArch64ADRPThunk_",	/* arm64 lld */
+		"__ARMV5PILongThunk_",	/* arm lld */
+		"__ARMV7PILongThunk_",
+		"__ThumbV7PILongThunk_",
+		"__LA25Thunk_",		/* mips lld */
+		"__microLA25Thunk_",
+		NULL
+	};
+
+	/* Symbol names that end with the following are ignored.*/
+	static const char * const ignored_suffixes[] = {
+		"_from_arm",		/* arm */
+		"_from_thumb",		/* arm */
+		"_veneer",		/* arm */
+		NULL
+	};
+
+	/* Symbol names that contain the following are ignored.*/
+	static const char * const ignored_matches[] = {
+		".long_branch.",	/* ppc stub */
+		".plt_branch.",		/* ppc stub */
+		NULL
+	};
+
+	const char * const *p;
+
+	for (p = ignored_symbols; *p; p++)
+		if (!strcmp(name, *p))
+			return true;
+
+	for (p = ignored_prefixes; *p; p++)
+		if (!strncmp(name, *p, strlen(*p)))
+			return true;
+
+	for (p = ignored_suffixes; *p; p++) {
+		int l = strlen(name) - strlen(*p);
+
+		if (l >= 0 && !strcmp(name + l, *p))
+			return true;
+	}
+
+	for (p = ignored_matches; *p; p++) {
+		if (strstr(name, *p))
+			return true;
+	}
+
+	if (type == 'U' || type == 'u')
+		return true;
+	/* exclude debugging symbols */
+	if (type == 'N' || type == 'n')
+		return true;
+
+	if (toupper(type) == 'A') {
+		/* Keep these useful absolute symbols */
+		if (strcmp(name, "__kernel_syscall_via_break") &&
+		    strcmp(name, "__kernel_syscall_via_epc") &&
+		    strcmp(name, "__kernel_sigtramp") &&
+		    strcmp(name, "__gp"))
+			return true;
+	}
+
+	return false;
+}
+
+static void check_symbol_range(const char *sym, unsigned long long addr,
+			       struct addr_range *ranges, int entries)
 {
 	size_t i;
 	struct addr_range *ar;
@@ -97,88 +187,70 @@
 
 		if (strcmp(sym, ar->start_sym) == 0) {
 			ar->start = addr;
-			return 0;
+			return;
 		} else if (strcmp(sym, ar->end_sym) == 0) {
 			ar->end = addr;
-			return 0;
+			return;
 		}
 	}
-
-	return 1;
 }
 
-static int read_symbol(FILE *in, struct sym_entry *s)
+static struct sym_entry *read_symbol(FILE *in)
 {
-	char sym[500], stype;
+	char name[500], type;
+	unsigned long long addr;
+	unsigned int len;
+	struct sym_entry *sym;
 	int rc;
 
-	rc = fscanf(in, "%llx %c %499s\n", &s->addr, &stype, sym);
+	rc = fscanf(in, "%llx %c %499s\n", &addr, &type, name);
 	if (rc != 3) {
-		if (rc != EOF && fgets(sym, 500, in) == NULL)
+		if (rc != EOF && fgets(name, 500, in) == NULL)
 			fprintf(stderr, "Read error or end of file.\n");
-		return -1;
+		return NULL;
 	}
-	if (strlen(sym) >= KSYM_NAME_LEN) {
+	if (strlen(name) >= KSYM_NAME_LEN) {
 		fprintf(stderr, "Symbol %s too long for kallsyms (%zu >= %d).\n"
 				"Please increase KSYM_NAME_LEN both in kernel and kallsyms.c\n",
-			sym, strlen(sym), KSYM_NAME_LEN);
-		return -1;
+			name, strlen(name), KSYM_NAME_LEN);
+		return NULL;
 	}
 
+	if (strcmp(name, "_text") == 0)
+		_text = addr;
+
 	/* Ignore most absolute/undefined (?) symbols. */
-	if (strcmp(sym, "_text") == 0)
-		_text = s->addr;
-	else if (check_symbol_range(sym, s->addr, text_ranges,
-				    ARRAY_SIZE(text_ranges)) == 0)
-		/* nothing to do */;
-	else if (toupper(stype) == 'A')
-	{
-		/* Keep these useful absolute symbols */
-		if (strcmp(sym, "__kernel_syscall_via_break") &&
-		    strcmp(sym, "__kernel_syscall_via_epc") &&
-		    strcmp(sym, "__kernel_sigtramp") &&
-		    strcmp(sym, "__gp"))
-			return -1;
+	if (is_ignored_symbol(name, type))
+		return NULL;
 
-	}
-	else if (toupper(stype) == 'U' ||
-		 is_arm_mapping_symbol(sym))
-		return -1;
-	/* exclude also MIPS ELF local symbols ($L123 instead of .L123) */
-	else if (sym[0] == '$')
-		return -1;
-	/* exclude debugging symbols */
-	else if (stype == 'N' || stype == 'n')
-		return -1;
-	/* exclude s390 kasan local symbols */
-	else if (!strncmp(sym, ".LASANPC", 8))
-		return -1;
+	check_symbol_range(name, addr, text_ranges, ARRAY_SIZE(text_ranges));
+	check_symbol_range(name, addr, &percpu_range, 1);
 
 	/* include the type field in the symbol name, so that it gets
 	 * compressed together */
-	s->len = strlen(sym) + 1;
-	s->sym = malloc(s->len + 1);
-	if (!s->sym) {
+
+	len = strlen(name) + 1;
+
+	sym = malloc(sizeof(*sym) + len + 1);
+	if (!sym) {
 		fprintf(stderr, "kallsyms failure: "
 			"unable to allocate required amount of memory\n");
 		exit(EXIT_FAILURE);
 	}
-	strcpy((char *)s->sym + 1, sym);
-	s->sym[0] = stype;
+	sym->addr = addr;
+	sym->len = len;
+	sym->sym[0] = type;
+	strcpy(sym_name(sym), name);
+	sym->percpu_absolute = 0;
 
-	s->percpu_absolute = 0;
-
-	/* Record if we've found __per_cpu_start/end. */
-	check_symbol_range(sym, s->addr, &percpu_range, 1);
-
-	return 0;
+	return sym;
 }
 
-static int symbol_in_range(struct sym_entry *s, struct addr_range *ranges,
-			   int entries)
+static int symbol_in_range(const struct sym_entry *s,
+			   const struct addr_range *ranges, int entries)
 {
 	size_t i;
-	struct addr_range *ar;
+	const struct addr_range *ar;
 
 	for (i = 0; i < entries; ++i) {
 		ar = &ranges[i];
@@ -190,41 +262,9 @@
 	return 0;
 }
 
-static int symbol_valid(struct sym_entry *s)
+static int symbol_valid(const struct sym_entry *s)
 {
-	/* Symbols which vary between passes.  Passes 1 and 2 must have
-	 * identical symbol lists.  The kallsyms_* symbols below are only added
-	 * after pass 1, they would be included in pass 2 when --all-symbols is
-	 * specified so exclude them to get a stable symbol list.
-	 */
-	static char *special_symbols[] = {
-		"kallsyms_addresses",
-		"kallsyms_offsets",
-		"kallsyms_relative_base",
-		"kallsyms_num_syms",
-		"kallsyms_names",
-		"kallsyms_markers",
-		"kallsyms_token_table",
-		"kallsyms_token_index",
-
-	/* Exclude linker generated symbols which vary between passes */
-		"_SDA_BASE_",		/* ppc */
-		"_SDA2_BASE_",		/* ppc */
-		NULL };
-
-	static char *special_prefixes[] = {
-		"__crc_",		/* modversions */
-		"__efistub_",		/* arm64 EFI stub namespace */
-		NULL };
-
-	static char *special_suffixes[] = {
-		"_veneer",		/* arm */
-		"_from_arm",		/* arm */
-		"_from_thumb",		/* arm */
-		NULL };
-
-	int i;
-	char *sym_name = (char *)s->sym + 1;
+	const char *name = sym_name(s);
 
 	/* if --all-symbols is not specified, then symbols outside the text
 	 * and inittext sections are discarded */
@@ -239,40 +279,50 @@
 		 * rules.
 		 */
 		if ((s->addr == text_range_text->end &&
-				strcmp(sym_name,
-				       text_range_text->end_sym)) ||
+		     strcmp(name, text_range_text->end_sym)) ||
 		    (s->addr == text_range_inittext->end &&
-				strcmp(sym_name,
-				       text_range_inittext->end_sym)))
-			return 0;
-	}
-
-	/* Exclude symbols which vary between passes. */
-	for (i = 0; special_symbols[i]; i++)
-		if (strcmp(sym_name, special_symbols[i]) == 0)
-			return 0;
-
-	for (i = 0; special_prefixes[i]; i++) {
-		int l = strlen(special_prefixes[i]);
-
-		if (l <= strlen(sym_name) &&
-		    strncmp(sym_name, special_prefixes[i], l) == 0)
-			return 0;
-	}
-
-	for (i = 0; special_suffixes[i]; i++) {
-		int l = strlen(sym_name) - strlen(special_suffixes[i]);
-
-		if (l >= 0 && strcmp(sym_name + l, special_suffixes[i]) == 0)
+		     strcmp(name, text_range_inittext->end_sym)))
 			return 0;
 	}
 
 	return 1;
 }
 
+/* remove all the invalid symbols from the table */
+static void shrink_table(void)
+{
+	unsigned int i, pos;
+
+	pos = 0;
+	for (i = 0; i < table_cnt; i++) {
+		if (symbol_valid(table[i])) {
+			if (pos != i)
+				table[pos] = table[i];
+			pos++;
+		} else {
+			free(table[i]);
+		}
+	}
+	table_cnt = pos;
+
+	/* When valid symbol is not registered, exit to error */
+	if (!table_cnt) {
+		fprintf(stderr, "No valid symbol.\n");
+		exit(1);
+	}
+}
+
 static void read_map(FILE *in)
 {
+	struct sym_entry *sym;
+
 	while (!feof(in)) {
+		sym = read_symbol(in);
+		if (!sym)
+			continue;
+
+		sym->start_pos = table_cnt;
+
 		if (table_cnt >= table_size) {
 			table_size += 10000;
 			table = realloc(table, sizeof(*table) * table_size);
@@ -281,23 +331,30 @@
 				exit (1);
 			}
 		}
-		if (read_symbol(in, &table[table_cnt]) == 0) {
-			table[table_cnt].start_pos = table_cnt;
-			table_cnt++;
-		}
+
+		table[table_cnt++] = sym;
 	}
 }
 
-static void output_label(char *label)
+static void output_label(const char *label)
 {
 	printf(".globl %s\n", label);
 	printf("\tALGN\n");
 	printf("%s:\n", label);
 }
 
+/* Provide proper symbols relocatability by their '_text' relativeness. */
+static void output_address(unsigned long long addr)
+{
+	if (_text <= addr)
+		printf("\tPTR\t_text + %#llx\n", addr - _text);
+	else
+		printf("\tPTR\t_text - %#llx\n", _text - addr);
+}
+
 /* uncompress a compressed symbol. When this function is called, the best table
  * might still be compressed itself, so the function needs to be recursive */
-static int expand_symbol(unsigned char *data, int len, char *result)
+static int expand_symbol(const unsigned char *data, int len, char *result)
 {
 	int c, rlen, total=0;
 
@@ -322,7 +379,7 @@
 	return total;
 }
 
-static int symbol_absolute(struct sym_entry *s)
+static int symbol_absolute(const struct sym_entry *s)
 {
 	return s->percpu_absolute;
 }
@@ -345,19 +402,6 @@
 
 	printf("\t.section .rodata, \"a\"\n");
 
-	/* Provide proper symbols relocatability by their relativeness
-	 * to a fixed anchor point in the runtime image, either '_text'
-	 * for absolute address tables, in which case the linker will
-	 * emit the final addresses at build time. Otherwise, use the
-	 * offset relative to the lowest value encountered of all relative
-	 * symbols, and emit non-relocatable fixed offsets that will be fixed
-	 * up at runtime.
-	 *
-	 * The symbol names cannot be used to construct normal symbol
-	 * references as the list of symbols contains symbols that are
-	 * declared static and are private to their .o files.  This prevents
-	 * .tmp_kallsyms.o or any other object from referencing them.
-	 */
 	if (!base_relative)
 		output_label("kallsyms_addresses");
 	else
@@ -365,43 +409,45 @@
 
 	for (i = 0; i < table_cnt; i++) {
 		if (base_relative) {
+			/*
+			 * Use the offset relative to the lowest value
+			 * encountered of all relative symbols, and emit
+			 * non-relocatable fixed offsets that will be fixed
+			 * up at runtime.
+			 */
+
 			long long offset;
 			int overflow;
 
 			if (!absolute_percpu) {
-				offset = table[i].addr - relative_base;
+				offset = table[i]->addr - relative_base;
 				overflow = (offset < 0 || offset > UINT_MAX);
-			} else if (symbol_absolute(&table[i])) {
-				offset = table[i].addr;
+			} else if (symbol_absolute(table[i])) {
+				offset = table[i]->addr;
 				overflow = (offset < 0 || offset > INT_MAX);
 			} else {
-				offset = relative_base - table[i].addr - 1;
+				offset = relative_base - table[i]->addr - 1;
 				overflow = (offset < INT_MIN || offset >= 0);
 			}
 			if (overflow) {
 				fprintf(stderr, "kallsyms failure: "
 					"%s symbol value %#llx out of range in relative mode\n",
-					symbol_absolute(&table[i]) ? "absolute" : "relative",
-					table[i].addr);
+					symbol_absolute(table[i]) ? "absolute" : "relative",
+					table[i]->addr);
 				exit(EXIT_FAILURE);
 			}
 			printf("\t.long\t%#x\n", (int)offset);
-		} else if (!symbol_absolute(&table[i])) {
-			if (_text <= table[i].addr)
-				printf("\tPTR\t_text + %#llx\n",
-					table[i].addr - _text);
-			else
-				printf("\tPTR\t_text - %#llx\n",
-					_text - table[i].addr);
+		} else if (!symbol_absolute(table[i])) {
+			output_address(table[i]->addr);
 		} else {
-			printf("\tPTR\t%#llx\n", table[i].addr);
+			printf("\tPTR\t%#llx\n", table[i]->addr);
 		}
 	}
 	printf("\n");
 
 	if (base_relative) {
 		output_label("kallsyms_relative_base");
-		printf("\tPTR\t_text - %#llx\n", _text - relative_base);
+		output_address(relative_base);
 		printf("\n");
 	}
 
@@ -424,12 +470,12 @@
 		if ((i & 0xFF) == 0)
 			markers[i >> 8] = off;
 
-		printf("\t.byte 0x%02x", table[i].len);
-		for (k = 0; k < table[i].len; k++)
-			printf(", 0x%02x", table[i].sym[k]);
+		printf("\t.byte 0x%02x", table[i]->len);
+		for (k = 0; k < table[i]->len; k++)
+			printf(", 0x%02x", table[i]->sym[k]);
 		printf("\n");
 
-		off += table[i].len + 1;
+		off += table[i]->len + 1;
 	}
 	printf("\n");
 
@@ -460,7 +506,7 @@
 /* table lookup compression functions */
 
 /* count all the possible tokens in a symbol */
-static void learn_symbol(unsigned char *symbol, int len)
+static void learn_symbol(const unsigned char *symbol, int len)
 {
 	int i;
 
@@ -469,7 +515,7 @@
 }
 
 /* decrease the count for all the possible tokens in a symbol */
-static void forget_symbol(unsigned char *symbol, int len)
+static void forget_symbol(const unsigned char *symbol, int len)
 {
 	int i;
 
@@ -477,26 +523,17 @@
 		token_profit[ symbol[i] + (symbol[i + 1] << 8) ]--;
 }
 
-/* remove all the invalid symbols from the table and do the initial token count */
+/* do the initial token count */
 static void build_initial_tok_table(void)
 {
-	unsigned int i, pos;
+	unsigned int i;
 
-	pos = 0;
-	for (i = 0; i < table_cnt; i++) {
-		if ( symbol_valid(&table[i]) ) {
-			if (pos != i)
-				table[pos] = table[i];
-			learn_symbol(table[pos].sym, table[pos].len);
-			pos++;
-		} else {
-			free(table[i].sym);
-		}
-	}
-	table_cnt = pos;
+	for (i = 0; i < table_cnt; i++)
+		learn_symbol(table[i]->sym, table[i]->len);
 }
 
-static void *find_token(unsigned char *str, int len, unsigned char *token)
+static unsigned char *find_token(unsigned char *str, int len,
+				 const unsigned char *token)
 {
 	int i;
 
@@ -509,22 +546,22 @@
 
 /* replace a given token in all the valid symbols. Use the sampled symbols
  * to update the counts */
-static void compress_symbols(unsigned char *str, int idx)
+static void compress_symbols(const unsigned char *str, int idx)
 {
 	unsigned int i, len, size;
 	unsigned char *p1, *p2;
 
 	for (i = 0; i < table_cnt; i++) {
 
-		len = table[i].len;
-		p1 = table[i].sym;
+		len = table[i]->len;
+		p1 = table[i]->sym;
 
 		/* find the token on the symbol */
 		p2 = find_token(p1, len, str);
 		if (!p2) continue;
 
 		/* decrease the counts for this symbol's tokens */
-		forget_symbol(table[i].sym, len);
+		forget_symbol(table[i]->sym, len);
 
 		size = len;
 
@@ -543,10 +580,10 @@
 
 		} while (p2);
 
-		table[i].len = len;
+		table[i]->len = len;
 
 		/* increase the counts for this symbol's new tokens */
-		learn_symbol(table[i].sym, len);
+		learn_symbol(table[i]->sym, len);
 	}
 }
 
@@ -602,8 +639,8 @@
 	unsigned int i, j, c;
 
 	for (i = 0; i < table_cnt; i++) {
-		for (j = 0; j < table[i].len; j++) {
-			c = table[i].sym[j];
+		for (j = 0; j < table[i]->len; j++) {
+			c = table[i]->sym[j];
 			best_table[c][0]=c;
 			best_table_len[c]=1;
 		}
@@ -616,19 +653,13 @@
 
 	insert_real_symbols_in_table();
 
-	/* When valid symbol is not registered, exit to error */
-	if (!table_cnt) {
-		fprintf(stderr, "No valid symbol.\n");
-		exit(1);
-	}
-
 	optimize_result();
 }
 
 /* guess for "linker script provide" symbol */
 static int may_be_linker_script_provide_symbol(const struct sym_entry *se)
 {
-	const char *symbol = (char *)se->sym + 1;
+	const char *symbol = sym_name(se);
 	int len = se->len - 1;
 
 	if (len < 8)
@@ -660,25 +691,12 @@
 	return 0;
 }
 
-static int prefix_underscores_count(const char *str)
-{
-	const char *tail = str;
-
-	while (*tail == '_')
-		tail++;
-
-	return tail - str;
-}
-
 static int compare_symbols(const void *a, const void *b)
 {
-	const struct sym_entry *sa;
-	const struct sym_entry *sb;
+	const struct sym_entry *sa = *(const struct sym_entry **)a;
+	const struct sym_entry *sb = *(const struct sym_entry **)b;
 	int wa, wb;
 
-	sa = a;
-	sb = b;
-
 	/* sort by address first */
 	if (sa->addr > sb->addr)
 		return 1;
@@ -698,8 +716,8 @@
 		return wa - wb;
 
 	/* sort by the number of prefix underscores */
-	wa = prefix_underscores_count((const char *)sa->sym + 1);
-	wb = prefix_underscores_count((const char *)sb->sym + 1);
+	wa = strspn(sym_name(sa), "_");
+	wb = strspn(sym_name(sb), "_");
 	if (wa != wb)
 		return wa - wb;
 
@@ -709,7 +727,7 @@
 
 static void sort_symbols(void)
 {
-	qsort(table, table_cnt, sizeof(struct sym_entry), compare_symbols);
+	qsort(table, table_cnt, sizeof(table[0]), compare_symbols);
 }
 
 static void make_percpus_absolute(void)
@@ -717,14 +735,14 @@
 	unsigned int i;
 
 	for (i = 0; i < table_cnt; i++)
-		if (symbol_in_range(&table[i], &percpu_range, 1)) {
+		if (symbol_in_range(table[i], &percpu_range, 1)) {
 			/*
 			 * Keep the 'A' override for percpu symbols to
 			 * ensure consistent behavior compared to older
 			 * versions of this tool.
 			 */
-			table[i].sym[0] = 'A';
-			table[i].percpu_absolute = 1;
+			table[i]->sym[0] = 'A';
+			table[i]->percpu_absolute = 1;
 		}
 }
 
@@ -733,11 +751,15 @@
 {
 	unsigned int i;
 
-	relative_base = -1ULL;
 	for (i = 0; i < table_cnt; i++)
-		if (!symbol_absolute(&table[i]) &&
-		    table[i].addr < relative_base)
-			relative_base = table[i].addr;
+		if (!symbol_absolute(table[i])) {
+			/*
+			 * The table is sorted by address.
+			 * Take the first non-absolute symbol value.
+			 */
+			relative_base = table[i]->addr;
+			return;
+		}
 }
 
 int main(int argc, char **argv)
@@ -758,11 +780,12 @@
 		usage();
 
 	read_map(stdin);
+	shrink_table();
 	if (absolute_percpu)
 		make_percpus_absolute();
+	sort_symbols();
 	if (base_relative)
 		record_relative_base();
-	sort_symbols();
 	optimize_token_table();
 	write_src();
 
diff --git a/scripts/kconfig/.gitignore b/scripts/kconfig/.gitignore
index b5bf92f..c3d537c 100644
--- a/scripts/kconfig/.gitignore
+++ b/scripts/kconfig/.gitignore
@@ -1,7 +1,5 @@
-#
-# Generated files
-#
-*.moc
+# SPDX-License-Identifier: GPL-2.0-only
+/qconf-moc.cc
 *conf-cfg
 
 #
diff --git a/scripts/kconfig/Makefile b/scripts/kconfig/Makefile
index ef2f233..e46df0a 100644
--- a/scripts/kconfig/Makefile
+++ b/scripts/kconfig/Makefile
@@ -12,10 +12,6 @@
 Kconfig := Kconfig
 endif
 
-ifndef KBUILD_DEFCONFIG
-KBUILD_DEFCONFIG := defconfig
-endif
-
 ifeq ($(quiet),silent_)
 silent := -s
 endif
@@ -24,19 +20,19 @@
 unexport CONFIG_
 
 xconfig: $(obj)/qconf
-	$< $(silent) $(Kconfig)
+	$(Q)$< $(silent) $(Kconfig)
 
 gconfig: $(obj)/gconf
-	$< $(silent) $(Kconfig)
+	$(Q)$< $(silent) $(Kconfig)
 
 menuconfig: $(obj)/mconf
-	$< $(silent) $(Kconfig)
+	$(Q)$< $(silent) $(Kconfig)
 
 config: $(obj)/conf
-	$< $(silent) --oldaskconfig $(Kconfig)
+	$(Q)$< $(silent) --oldaskconfig $(Kconfig)
 
 nconfig: $(obj)/nconf
-	$< $(silent) $(Kconfig)
+	$(Q)$< $(silent) $(Kconfig)
 
 build_menuconfig: $(obj)/mconf
 
@@ -47,16 +43,16 @@
 build_xconfig: $(obj)/qconf
 
 localyesconfig localmodconfig: $(obj)/conf
-	$(Q)perl $(srctree)/$(src)/streamline_config.pl --$@ $(srctree) $(Kconfig) > .tmp.config
-	$(Q)if [ -f .config ]; then 					\
-			cmp -s .tmp.config .config ||			\
-			(mv -f .config .config.old.1;			\
-			 mv -f .tmp.config .config;			\
-			 $< $(silent) --oldconfig $(Kconfig);		\
-			 mv -f .config.old.1 .config.old)		\
-	else								\
-			mv -f .tmp.config .config;			\
-			$< $(silent) --oldconfig $(Kconfig);		\
+	$(Q)$(PERL) $(srctree)/$(src)/streamline_config.pl --$@ $(srctree) $(Kconfig) > .tmp.config
+	$(Q)if [ -f .config ]; then 				\
+		cmp -s .tmp.config .config ||			\
+		(mv -f .config .config.old.1;			\
+		 mv -f .tmp.config .config;			\
+		 $< $(silent) --oldconfig $(Kconfig);		\
+		 mv -f .config.old.1 .config.old)		\
+	else							\
+		mv -f .tmp.config .config;			\
+		$< $(silent) --oldconfig $(Kconfig);		\
 	fi
 	$(Q)rm -f .tmp.config
 
@@ -66,16 +62,18 @@
 #  syncconfig has become an internal implementation detail and is now
 #  deprecated for external use
 simple-targets := oldconfig allnoconfig allyesconfig allmodconfig \
-	alldefconfig randconfig listnewconfig olddefconfig syncconfig
+	alldefconfig randconfig listnewconfig olddefconfig syncconfig \
+	helpnewconfig yes2modconfig mod2yesconfig
+
 PHONY += $(simple-targets)
 
 $(simple-targets): $(obj)/conf
-	$< $(silent) --$@ $(Kconfig)
+	$(Q)$< $(silent) --$@ $(Kconfig)
 
 PHONY += savedefconfig defconfig
 
 savedefconfig: $(obj)/conf
-	$< $(silent) --$@=defconfig $(Kconfig)
+	$(Q)$< $(silent) --$@=defconfig $(Kconfig)
 
 defconfig: $(obj)/conf
 ifneq ($(wildcard $(srctree)/arch/$(SRCARCH)/configs/$(KBUILD_DEFCONFIG)),)
@@ -98,11 +96,13 @@
 
 PHONY += kvmconfig
 kvmconfig: kvm_guest.config
-	@:
+	@echo >&2 "WARNING: 'make $@' will be removed after Linux 5.10"
+	@echo >&2 "         Please use 'make $<' instead."
 
 PHONY += xenconfig
 xenconfig: xen.config
-	@:
+	@echo >&2 "WARNING: 'make $@' will be removed after Linux 5.10"
+	@echo >&2 "         Please use 'make $<' instead."
 
 PHONY += tinyconfig
 tinyconfig:
@@ -111,7 +111,7 @@
 # CHECK: -o cache_dir=<path> working?
 PHONY += testconfig
 testconfig: $(obj)/conf
-	$(PYTHON3) -B -m pytest $(srctree)/$(src)/tests \
+	$(Q)$(PYTHON3) -B -m pytest $(srctree)/$(src)/tests \
 	-o cache_dir=$(abspath $(obj)/tests/.cache) \
 	$(if $(findstring 1,$(KBUILD_VERBOSE)),--capture=no)
 clean-files += tests/.cache
@@ -125,7 +125,9 @@
 	@echo  '  gconfig	  - Update current config utilising a GTK+ based front-end'
 	@echo  '  oldconfig	  - Update current config utilising a provided .config as base'
 	@echo  '  localmodconfig  - Update current config disabling modules not loaded'
+	@echo  '                    except those preserved by LMC_KEEP environment variable'
 	@echo  '  localyesconfig  - Update current config converting local mods to core'
+	@echo  '                    except those preserved by LMC_KEEP environment variable'
 	@echo  '  defconfig	  - New config with default from ARCH supplied defconfig'
 	@echo  '  savedefconfig   - Save current config as ./defconfig (minimal config)'
 	@echo  '  allnoconfig	  - New config where all options are answered with no'
@@ -133,29 +135,30 @@
 	@echo  '  allmodconfig	  - New config selecting modules when possible'
 	@echo  '  alldefconfig    - New config with all symbols set to default'
 	@echo  '  randconfig	  - New config with random answer to all options'
+	@echo  '  yes2modconfig	  - Change answers from yes to mod if possible'
+	@echo  '  mod2yesconfig	  - Change answers from mod to yes if possible'
 	@echo  '  listnewconfig   - List new options'
+	@echo  '  helpnewconfig   - List new options and help text'
 	@echo  '  olddefconfig	  - Same as oldconfig but sets new symbols to their'
 	@echo  '                    default value without prompting'
-	@echo  '  kvmconfig	  - Enable additional options for kvm guest kernel support'
-	@echo  '  xenconfig       - Enable additional options for xen dom0 and guest kernel support'
 	@echo  '  tinyconfig	  - Configure the tiniest possible kernel'
 	@echo  '  testconfig	  - Run Kconfig unit tests (requires python3 and pytest)'
 
 # ===========================================================================
 # object files used by all kconfig flavours
 common-objs	:= confdata.o expr.o lexer.lex.o parser.tab.o preprocess.o \
-		   symbol.o
+		   symbol.o util.o
 
 $(obj)/lexer.lex.o: $(obj)/parser.tab.h
 HOSTCFLAGS_lexer.lex.o	:= -I $(srctree)/$(src)
 HOSTCFLAGS_parser.tab.o	:= -I $(srctree)/$(src)
 
 # conf: Used for defconfig, oldconfig and related targets
-hostprogs-y	+= conf
+hostprogs	+= conf
 conf-objs	:= conf.o $(common-objs)
 
 # nconf: Used for the nconfig target based on ncurses
-hostprogs-y	+= nconf
+hostprogs	+= nconf
 nconf-objs	:= nconf.o nconf.gui.o $(common-objs)
 
 HOSTLDLIBS_nconf	= $(shell . $(obj)/nconf-cfg && echo $$libs)
@@ -165,7 +168,7 @@
 $(obj)/nconf.o $(obj)/nconf.gui.o: $(obj)/nconf-cfg
 
 # mconf: Used for the menuconfig target based on lxdialog
-hostprogs-y	+= mconf
+hostprogs	+= mconf
 lxdialog	:= $(addprefix lxdialog/, \
 		     checklist.o inputbox.o menubox.o textbox.o util.o yesno.o)
 mconf-objs	:= mconf.o $(lxdialog) $(common-objs)
@@ -177,23 +180,26 @@
 $(addprefix $(obj)/, mconf.o $(lxdialog)): $(obj)/mconf-cfg
 
 # qconf: Used for the xconfig target based on Qt
-hostprogs-y	+= qconf
-qconf-cxxobjs	:= qconf.o
+hostprogs	+= qconf
+qconf-cxxobjs	:= qconf.o qconf-moc.o
 qconf-objs	:= images.o $(common-objs)
 
 HOSTLDLIBS_qconf	= $(shell . $(obj)/qconf-cfg && echo $$libs)
 HOSTCXXFLAGS_qconf.o	= $(shell . $(obj)/qconf-cfg && echo $$cflags)
+HOSTCXXFLAGS_qconf-moc.o = $(shell . $(obj)/qconf-cfg && echo $$cflags)
 
-$(obj)/qconf.o: $(obj)/qconf-cfg $(obj)/qconf.moc
+$(obj)/qconf.o: $(obj)/qconf-cfg
 
 quiet_cmd_moc = MOC     $@
-      cmd_moc = $(shell . $(obj)/qconf-cfg && echo $$moc) -i $< -o $@
+      cmd_moc = $(shell . $(obj)/qconf-cfg && echo $$moc) $< -o $@
 
-$(obj)/%.moc: $(src)/%.h $(obj)/qconf-cfg
-	$(call cmd,moc)
+$(obj)/qconf-moc.cc: $(src)/qconf.h $(obj)/qconf-cfg FORCE
+	$(call if_changed,moc)
+
+targets += qconf-moc.cc
 
 # gconf: Used for the gconfig target based on GTK+
-hostprogs-y	+= gconf
+hostprogs	+= gconf
 gconf-objs	:= gconf.o images.o $(common-objs)
 
 HOSTLDLIBS_gconf    = $(shell . $(obj)/gconf-cfg && echo $$libs)
diff --git a/scripts/kconfig/conf.c b/scripts/kconfig/conf.c
index 40e16e8..f6e548b 100644
--- a/scripts/kconfig/conf.c
+++ b/scripts/kconfig/conf.c
@@ -32,7 +32,10 @@
 	defconfig,
 	savedefconfig,
 	listnewconfig,
+	helpnewconfig,
 	olddefconfig,
+	yes2modconfig,
+	mod2yesconfig,
 };
 static enum input_mode input_mode = oldaskconfig;
 
@@ -434,6 +437,11 @@
 						printf("%s%s=%s\n", CONFIG_, sym->name, str);
 					}
 				}
+			} else if (input_mode == helpnewconfig) {
+				printf("-----\n");
+				print_help(menu);
+				printf("-----\n");
+
 			} else {
 				if (!conf_cnt++)
 					printf("*\n* Restart config...\n*\n");
@@ -459,7 +467,10 @@
 	{"alldefconfig",    no_argument,       NULL, alldefconfig},
 	{"randconfig",      no_argument,       NULL, randconfig},
 	{"listnewconfig",   no_argument,       NULL, listnewconfig},
+	{"helpnewconfig",   no_argument,       NULL, helpnewconfig},
 	{"olddefconfig",    no_argument,       NULL, olddefconfig},
+	{"yes2modconfig",   no_argument,       NULL, yes2modconfig},
+	{"mod2yesconfig",   no_argument,       NULL, mod2yesconfig},
 	{NULL, 0, NULL, 0}
 };
 
@@ -469,6 +480,7 @@
 	printf("Usage: %s [-s] [option] <kconfig-file>\n", progname);
 	printf("[option] is _one_ of the following:\n");
 	printf("  --listnewconfig         List new options\n");
+	printf("  --helpnewconfig         List new options and help text\n");
 	printf("  --oldaskconfig          Start a new configuration using a line-oriented program\n");
 	printf("  --oldconfig             Update a configuration using a provided .config as base\n");
 	printf("  --syncconfig            Similar to oldconfig but generates configuration in\n"
@@ -481,6 +493,8 @@
 	printf("  --allmodconfig          New config where all options are answered with mod\n");
 	printf("  --alldefconfig          New config with all symbols set to default\n");
 	printf("  --randconfig            New config with random answer to all options\n");
+	printf("  --yes2modconfig         Change answers from yes to mod if possible\n");
+	printf("  --mod2yesconfig         Change answers from mod to yes if possible\n");
 }
 
 int main(int ac, char **av)
@@ -543,7 +557,10 @@
 		case allmodconfig:
 		case alldefconfig:
 		case listnewconfig:
+		case helpnewconfig:
 		case olddefconfig:
+		case yes2modconfig:
+		case mod2yesconfig:
 			break;
 		case '?':
 			conf_usage(progname);
@@ -576,7 +593,10 @@
 	case oldaskconfig:
 	case oldconfig:
 	case listnewconfig:
+	case helpnewconfig:
 	case olddefconfig:
+	case yes2modconfig:
+	case mod2yesconfig:
 		conf_read(NULL);
 		break;
 	case allnoconfig:
@@ -650,6 +670,12 @@
 		break;
 	case savedefconfig:
 		break;
+	case yes2modconfig:
+		conf_rewrite_mod_or_yes(def_y2m);
+		break;
+	case mod2yesconfig:
+		conf_rewrite_mod_or_yes(def_m2y);
+		break;
 	case oldaskconfig:
 		rootEntry = &rootmenu;
 		conf(&rootmenu);
@@ -657,6 +683,7 @@
 		/* fall through */
 	case oldconfig:
 	case listnewconfig:
+	case helpnewconfig:
 	case syncconfig:
 		/* Update until a loop caused no more changes */
 		do {
@@ -675,7 +702,7 @@
 				defconfig_file);
 			return 1;
 		}
-	} else if (input_mode != listnewconfig) {
+	} else if (input_mode != listnewconfig && input_mode != helpnewconfig) {
 		if (!no_conf_write && conf_write(NULL)) {
 			fprintf(stderr, "\n*** Error during writing of the configuration.\n\n");
 			exit(1);
diff --git a/scripts/kconfig/confdata.c b/scripts/kconfig/confdata.c
index 1729823..867b06c 100644
--- a/scripts/kconfig/confdata.c
+++ b/scripts/kconfig/confdata.c
@@ -710,25 +710,6 @@
 	.print_comment = header_print_comment,
 };
 
-/*
- * Tristate printer
- *
- * This printer is used when generating the `include/config/tristate.conf' file.
- */
-static void
-tristate_print_symbol(FILE *fp, struct symbol *sym, const char *value, void *arg)
-{
-
-	if (sym->type == S_TRISTATE && *value != 'n')
-		fprintf(fp, "%s%s=%c\n", CONFIG_, sym->name, (char)toupper(*value));
-}
-
-static struct conf_printer tristate_printer_cb =
-{
-	.print_symbol = tristate_print_symbol,
-	.print_comment = kconfig_print_comment,
-};
-
 static void conf_write_symbol(FILE *fp, struct symbol *sym,
 			      struct conf_printer *printer, void *printer_arg)
 {
@@ -987,14 +968,19 @@
 
 static int conf_touch_deps(void)
 {
-	const char *name;
+	const char *name, *tmp;
 	struct symbol *sym;
 	int res, i;
 
-	strcpy(depfile_path, "include/config/");
-	depfile_prefix_len = strlen(depfile_path);
-
 	name = conf_get_autoconfig_name();
+	tmp = strrchr(name, '/');
+	depfile_prefix_len = tmp ? tmp - name + 1 : 0;
+	if (depfile_prefix_len + 1 > sizeof(depfile_path))
+		return -1;
+
+	strncpy(depfile_path, name, depfile_prefix_len);
+	depfile_path[depfile_prefix_len] = 0;
+
 	conf_read_simple(name, S_DEF_AUTO);
 	sym_calc_value(modules_sym);
 
@@ -1062,7 +1048,7 @@
 	struct symbol *sym;
 	const char *name;
 	const char *autoconf_name = conf_get_autoconfig_name();
-	FILE *out, *tristate, *out_h;
+	FILE *out, *out_h;
 	int i;
 
 	if (!overwrite && is_present(autoconf_name))
@@ -1077,23 +1063,13 @@
 	if (!out)
 		return 1;
 
-	tristate = fopen(".tmpconfig_tristate", "w");
-	if (!tristate) {
-		fclose(out);
-		return 1;
-	}
-
 	out_h = fopen(".tmpconfig.h", "w");
 	if (!out_h) {
 		fclose(out);
-		fclose(tristate);
 		return 1;
 	}
 
 	conf_write_heading(out, &kconfig_printer_cb, NULL);
-
-	conf_write_heading(tristate, &tristate_printer_cb, NULL);
-
 	conf_write_heading(out_h, &header_printer_cb, NULL);
 
 	for_all_symbols(i, sym) {
@@ -1101,15 +1077,11 @@
 		if (!(sym->flags & SYMBOL_WRITE) || !sym->name)
 			continue;
 
-		/* write symbol to auto.conf, tristate and header files */
+		/* write symbols to auto.conf and autoconf.h */
 		conf_write_symbol(out, sym, &kconfig_printer_cb, (void *)1);
-
-		conf_write_symbol(tristate, sym, &tristate_printer_cb, (void *)1);
-
 		conf_write_symbol(out_h, sym, &header_printer_cb, NULL);
 	}
 	fclose(out);
-	fclose(tristate);
 	fclose(out_h);
 
 	name = getenv("KCONFIG_AUTOHEADER");
@@ -1120,14 +1092,6 @@
 	if (rename(".tmpconfig.h", name))
 		return 1;
 
-	name = getenv("KCONFIG_TRISTATE");
-	if (!name)
-		name = "include/config/tristate.conf";
-	if (make_parent_dir(name))
-		return 1;
-	if (rename(".tmpconfig_tristate", name))
-		return 1;
-
 	if (make_parent_dir(autoconf_name))
 		return 1;
 	/*
@@ -1362,3 +1326,18 @@
 
 	return has_changed;
 }
+
+void conf_rewrite_mod_or_yes(enum conf_def_mode mode)
+{
+	struct symbol *sym;
+	int i;
+	tristate old_val = (mode == def_y2m) ? yes : mod;
+	tristate new_val = (mode == def_y2m) ? mod : yes;
+
+	for_all_symbols(i, sym) {
+		if (sym_get_type(sym) == S_TRISTATE &&
+		    sym->def[S_DEF_USER].tri == old_val)
+			sym->def[S_DEF_USER].tri = new_val;
+	}
+	sym_clear_all_valid();
+}
diff --git a/scripts/kconfig/expr.c b/scripts/kconfig/expr.c
index 9f1de58..81ebf81 100644
--- a/scripts/kconfig/expr.c
+++ b/scripts/kconfig/expr.c
@@ -13,7 +13,6 @@
 
 #define DEBUG_EXPR	0
 
-static int expr_eq(struct expr *e1, struct expr *e2);
 static struct expr *expr_eliminate_yn(struct expr *e);
 
 struct expr *expr_alloc_symbol(struct symbol *sym)
@@ -250,7 +249,7 @@
  * equals some operand in the other (operands do not need to appear in the same
  * order), recursively.
  */
-static int expr_eq(struct expr *e1, struct expr *e2)
+int expr_eq(struct expr *e1, struct expr *e2)
 {
 	int res, old_count;
 
diff --git a/scripts/kconfig/expr.h b/scripts/kconfig/expr.h
index 017843c..5c34436 100644
--- a/scripts/kconfig/expr.h
+++ b/scripts/kconfig/expr.h
@@ -191,7 +191,6 @@
 
 struct property {
 	struct property *next;     /* next property - null if last */
-	struct symbol *sym;        /* the symbol for which the property is associated */
 	enum prop_type type;       /* type of property */
 	const char *text;          /* the prompt value - P_PROMPT, P_MENU, P_COMMENT */
 	struct expr_value visible;
@@ -301,6 +300,7 @@
 struct expr *expr_copy(const struct expr *org);
 void expr_free(struct expr *e);
 void expr_eliminate_eq(struct expr **ep1, struct expr **ep2);
+int expr_eq(struct expr *e1, struct expr *e2);
 tristate expr_calc_value(struct expr *e);
 struct expr *expr_trans_bool(struct expr *e);
 struct expr *expr_eliminate_dups(struct expr *e);
diff --git a/scripts/kconfig/gconf.c b/scripts/kconfig/gconf.c
index e36b342..5527482 100644
--- a/scripts/kconfig/gconf.c
+++ b/scripts/kconfig/gconf.c
@@ -18,6 +18,7 @@
 
 #include <stdio.h>
 #include <string.h>
+#include <strings.h>
 #include <unistd.h>
 #include <time.h>
 
diff --git a/scripts/kconfig/images.c b/scripts/kconfig/images.c
index b4fa0e4..2f9afff 100644
--- a/scripts/kconfig/images.c
+++ b/scripts/kconfig/images.c
@@ -5,7 +5,7 @@
 
 #include "images.h"
 
-const char *xpm_load[] = {
+const char * const xpm_load[] = {
 "22 22 5 1",
 ". c None",
 "# c #000000",
@@ -35,7 +35,7 @@
 "###############.......",
 "......................"};
 
-const char *xpm_save[] = {
+const char * const xpm_save[] = {
 "22 22 5 1",
 ". c None",
 "# c #000000",
@@ -65,7 +65,7 @@
 "..##################..",
 "......................"};
 
-const char *xpm_back[] = {
+const char * const xpm_back[] = {
 "22 22 3 1",
 ". c None",
 "# c #000083",
@@ -93,7 +93,7 @@
 "......................",
 "......................"};
 
-const char *xpm_tree_view[] = {
+const char * const xpm_tree_view[] = {
 "22 22 2 1",
 ". c None",
 "# c #000000",
@@ -120,7 +120,7 @@
 "......................",
 "......................"};
 
-const char *xpm_single_view[] = {
+const char * const xpm_single_view[] = {
 "22 22 2 1",
 ". c None",
 "# c #000000",
@@ -147,7 +147,7 @@
 "......................",
 "......................"};
 
-const char *xpm_split_view[] = {
+const char * const xpm_split_view[] = {
 "22 22 2 1",
 ". c None",
 "# c #000000",
@@ -174,7 +174,7 @@
 "......................",
 "......................"};
 
-const char *xpm_symbol_no[] = {
+const char * const xpm_symbol_no[] = {
 "12 12 2 1",
 "  c white",
 ". c black",
@@ -191,7 +191,7 @@
 " .......... ",
 "            "};
 
-const char *xpm_symbol_mod[] = {
+const char * const xpm_symbol_mod[] = {
 "12 12 2 1",
 "  c white",
 ". c black",
@@ -208,7 +208,7 @@
 " .......... ",
 "            "};
 
-const char *xpm_symbol_yes[] = {
+const char * const xpm_symbol_yes[] = {
 "12 12 2 1",
 "  c white",
 ". c black",
@@ -225,7 +225,7 @@
 " .......... ",
 "            "};
 
-const char *xpm_choice_no[] = {
+const char * const xpm_choice_no[] = {
 "12 12 2 1",
 "  c white",
 ". c black",
@@ -242,7 +242,7 @@
 "    ....    ",
 "            "};
 
-const char *xpm_choice_yes[] = {
+const char * const xpm_choice_yes[] = {
 "12 12 2 1",
 "  c white",
 ". c black",
@@ -259,7 +259,7 @@
 "    ....    ",
 "            "};
 
-const char *xpm_menu[] = {
+const char * const xpm_menu[] = {
 "12 12 2 1",
 "  c white",
 ". c black",
@@ -276,7 +276,7 @@
 " .......... ",
 "            "};
 
-const char *xpm_menu_inv[] = {
+const char * const xpm_menu_inv[] = {
 "12 12 2 1",
 "  c white",
 ". c black",
@@ -293,7 +293,7 @@
 " .......... ",
 "            "};
 
-const char *xpm_menuback[] = {
+const char * const xpm_menuback[] = {
 "12 12 2 1",
 "  c white",
 ". c black",
@@ -310,7 +310,7 @@
 " .......... ",
 "            "};
 
-const char *xpm_void[] = {
+const char * const xpm_void[] = {
 "12 12 2 1",
 "  c white",
 ". c black",
diff --git a/scripts/kconfig/images.h b/scripts/kconfig/images.h
index d8ff614..7212dec 100644
--- a/scripts/kconfig/images.h
+++ b/scripts/kconfig/images.h
@@ -10,21 +10,21 @@
 extern "C" {
 #endif
 
-extern const char *xpm_load[];
-extern const char *xpm_save[];
-extern const char *xpm_back[];
-extern const char *xpm_tree_view[];
-extern const char *xpm_single_view[];
-extern const char *xpm_split_view[];
-extern const char *xpm_symbol_no[];
-extern const char *xpm_symbol_mod[];
-extern const char *xpm_symbol_yes[];
-extern const char *xpm_choice_no[];
-extern const char *xpm_choice_yes[];
-extern const char *xpm_menu[];
-extern const char *xpm_menu_inv[];
-extern const char *xpm_menuback[];
-extern const char *xpm_void[];
+extern const char * const xpm_load[];
+extern const char * const xpm_save[];
+extern const char * const xpm_back[];
+extern const char * const xpm_tree_view[];
+extern const char * const xpm_single_view[];
+extern const char * const xpm_split_view[];
+extern const char * const xpm_symbol_no[];
+extern const char * const xpm_symbol_mod[];
+extern const char * const xpm_symbol_yes[];
+extern const char * const xpm_choice_no[];
+extern const char * const xpm_choice_yes[];
+extern const char * const xpm_menu[];
+extern const char * const xpm_menu_inv[];
+extern const char * const xpm_menuback[];
+extern const char * const xpm_void[];
 
 #ifdef __cplusplus
 }
diff --git a/scripts/kconfig/lexer.l b/scripts/kconfig/lexer.l
index 6354c90..240109f 100644
--- a/scripts/kconfig/lexer.l
+++ b/scripts/kconfig/lexer.l
@@ -36,7 +36,7 @@
 	YY_BUFFER_STATE state;
 };
 
-struct buffer *current_buf;
+static struct buffer *current_buf;
 
 static int last_ts, first_ts;
 
@@ -105,7 +105,7 @@
 "endchoice"		return T_ENDCHOICE;
 "endif"			return T_ENDIF;
 "endmenu"		return T_ENDMENU;
-"help"|"---help---"	return T_HELP;
+"help"			return T_HELP;
 "hex"			return T_HEX;
 "if"			return T_IF;
 "imply"			return T_IMPLY;
diff --git a/scripts/kconfig/lkc.h b/scripts/kconfig/lkc.h
index 4fb16f3..8454649 100644
--- a/scripts/kconfig/lkc.h
+++ b/scripts/kconfig/lkc.h
@@ -34,6 +34,8 @@
 	def_default,
 	def_yes,
 	def_mod,
+	def_y2m,
+	def_m2y,
 	def_no,
 	def_random
 };
@@ -52,6 +54,7 @@
 void sym_set_change_count(int count);
 void sym_add_change_count(int count);
 bool conf_set_all_new_symbols(enum conf_def_mode mode);
+void conf_rewrite_mod_or_yes(enum conf_def_mode mode);
 void set_all_choice_values(struct symbol *csym);
 
 /* confdata.c and expr.c */
@@ -63,23 +66,6 @@
 		fprintf(stderr, "Error in writing or end of file.\n");
 }
 
-/* menu.c */
-void _menu_init(void);
-void menu_warn(struct menu *menu, const char *fmt, ...);
-struct menu *menu_add_menu(void);
-void menu_end_menu(void);
-void menu_add_entry(struct symbol *sym);
-void menu_add_dep(struct expr *dep);
-void menu_add_visibility(struct expr *dep);
-struct property *menu_add_prompt(enum prop_type type, char *prompt, struct expr *dep);
-void menu_add_expr(enum prop_type type, struct expr *expr, struct expr *dep);
-void menu_add_symbol(enum prop_type type, struct symbol *sym, struct expr *dep);
-void menu_add_option_modules(void);
-void menu_add_option_defconfig_list(void);
-void menu_add_option_allnoconfig_y(void);
-void menu_finalize(struct menu *parent);
-void menu_set_type(int type);
-
 /* util.c */
 struct file *file_lookup(const char *name);
 void *xmalloc(size_t size);
@@ -106,13 +92,42 @@
 void str_printf(struct gstr *gs, const char *fmt, ...);
 const char *str_get(struct gstr *gs);
 
+/* menu.c */
+void _menu_init(void);
+void menu_warn(struct menu *menu, const char *fmt, ...);
+struct menu *menu_add_menu(void);
+void menu_end_menu(void);
+void menu_add_entry(struct symbol *sym);
+void menu_add_dep(struct expr *dep);
+void menu_add_visibility(struct expr *dep);
+struct property *menu_add_prompt(enum prop_type type, char *prompt, struct expr *dep);
+void menu_add_expr(enum prop_type type, struct expr *expr, struct expr *dep);
+void menu_add_symbol(enum prop_type type, struct symbol *sym, struct expr *dep);
+void menu_add_option_modules(void);
+void menu_add_option_defconfig_list(void);
+void menu_add_option_allnoconfig_y(void);
+void menu_finalize(struct menu *parent);
+void menu_set_type(int type);
+
+extern struct menu rootmenu;
+
+bool menu_is_empty(struct menu *menu);
+bool menu_is_visible(struct menu *menu);
+bool menu_has_prompt(struct menu *menu);
+const char *menu_get_prompt(struct menu *menu);
+struct menu *menu_get_root_menu(struct menu *menu);
+struct menu *menu_get_parent_menu(struct menu *menu);
+bool menu_has_help(struct menu *menu);
+const char *menu_get_help(struct menu *menu);
+struct gstr get_relations_str(struct symbol **sym_arr, struct list_head *head);
+void menu_get_ext_help(struct menu *menu, struct gstr *help);
+
 /* symbol.c */
 void sym_clear_all_valid(void);
 struct symbol *sym_choice_default(struct symbol *sym);
 struct property *sym_get_range_prop(struct symbol *sym);
 const char *sym_get_string_default(struct symbol *sym);
 struct symbol *sym_check_deps(struct symbol *sym);
-struct property *prop_alloc(enum prop_type type, struct symbol *sym);
 struct symbol *prop_get_symbol(struct property *prop);
 
 static inline tristate sym_get_tristate_value(struct symbol *sym)
diff --git a/scripts/kconfig/lkc_proto.h b/scripts/kconfig/lkc_proto.h
index f9ab982..9e81be3 100644
--- a/scripts/kconfig/lkc_proto.h
+++ b/scripts/kconfig/lkc_proto.h
@@ -12,20 +12,6 @@
 void conf_set_changed_callback(void (*fn)(void));
 void conf_set_message_callback(void (*fn)(const char *s));
 
-/* menu.c */
-extern struct menu rootmenu;
-
-bool menu_is_empty(struct menu *menu);
-bool menu_is_visible(struct menu *menu);
-bool menu_has_prompt(struct menu *menu);
-const char * menu_get_prompt(struct menu *menu);
-struct menu * menu_get_root_menu(struct menu *menu);
-struct menu * menu_get_parent_menu(struct menu *menu);
-bool menu_has_help(struct menu *menu);
-const char * menu_get_help(struct menu *menu);
-struct gstr get_relations_str(struct symbol **sym_arr, struct list_head *head);
-void menu_get_ext_help(struct menu *menu, struct gstr *help);
-
 /* symbol.c */
 extern struct symbol * symbol_hash[SYMBOL_HASHSIZE];
 
diff --git a/scripts/kconfig/mconf-cfg.sh b/scripts/kconfig/mconf-cfg.sh
index c812872..aa68ec9 100755
--- a/scripts/kconfig/mconf-cfg.sh
+++ b/scripts/kconfig/mconf-cfg.sh
@@ -44,4 +44,7 @@
 echo >&2 "* Install ncurses (ncurses-devel or libncurses-dev"
 echo >&2 "* depending on your distribution)."
 echo >&2 "*"
+echo >&2 "* You may also need to install pkg-config to find the"
+echo >&2 "* ncurses installed in a non-default location."
+echo >&2 "*"
 exit 1
diff --git a/scripts/kconfig/mconf.c b/scripts/kconfig/mconf.c
index 49c26ea..4063dbc 100644
--- a/scripts/kconfig/mconf.c
+++ b/scripts/kconfig/mconf.c
@@ -15,6 +15,7 @@
 #include <stdarg.h>
 #include <stdlib.h>
 #include <string.h>
+#include <strings.h>
 #include <signal.h>
 #include <unistd.h>
 
diff --git a/scripts/kconfig/menu.c b/scripts/kconfig/menu.c
index d9d1646..a5fbd6c 100644
--- a/scripts/kconfig/menu.c
+++ b/scripts/kconfig/menu.c
@@ -65,7 +65,8 @@
 struct menu *menu_add_menu(void)
 {
 	last_entry_ptr = &current_entry->list;
-	return current_menu = current_entry;
+	current_menu = current_entry;
+	return current_menu;
 }
 
 void menu_end_menu(void)
@@ -124,59 +125,74 @@
 		sym_type_name(sym->type), sym_type_name(type));
 }
 
-static struct property *menu_add_prop(enum prop_type type, char *prompt, struct expr *expr, struct expr *dep)
+static struct property *menu_add_prop(enum prop_type type, struct expr *expr,
+				      struct expr *dep)
 {
-	struct property *prop = prop_alloc(type, current_entry->sym);
+	struct property *prop;
 
+	prop = xmalloc(sizeof(*prop));
+	memset(prop, 0, sizeof(*prop));
+	prop->type = type;
+	prop->file = current_file;
+	prop->lineno = zconf_lineno();
 	prop->menu = current_entry;
 	prop->expr = expr;
 	prop->visible.expr = dep;
 
-	if (prompt) {
-		if (isspace(*prompt)) {
-			prop_warn(prop, "leading whitespace ignored");
-			while (isspace(*prompt))
-				prompt++;
-		}
-		if (current_entry->prompt && current_entry != &rootmenu)
-			prop_warn(prop, "prompt redefined");
+	/* append property to the prop list of symbol */
+	if (current_entry->sym) {
+		struct property **propp;
 
-		/* Apply all upper menus' visibilities to actual prompts. */
-		if(type == P_PROMPT) {
-			struct menu *menu = current_entry;
-
-			while ((menu = menu->parent) != NULL) {
-				struct expr *dup_expr;
-
-				if (!menu->visibility)
-					continue;
-				/*
-				 * Do not add a reference to the
-				 * menu's visibility expression but
-				 * use a copy of it.  Otherwise the
-				 * expression reduction functions
-				 * will modify expressions that have
-				 * multiple references which can
-				 * cause unwanted side effects.
-				 */
-				dup_expr = expr_copy(menu->visibility);
-
-				prop->visible.expr
-					= expr_alloc_and(prop->visible.expr,
-							 dup_expr);
-			}
-		}
-
-		current_entry->prompt = prop;
+		for (propp = &current_entry->sym->prop;
+		     *propp;
+		     propp = &(*propp)->next)
+			;
+		*propp = prop;
 	}
-	prop->text = prompt;
 
 	return prop;
 }
 
-struct property *menu_add_prompt(enum prop_type type, char *prompt, struct expr *dep)
+struct property *menu_add_prompt(enum prop_type type, char *prompt,
+				 struct expr *dep)
 {
-	return menu_add_prop(type, prompt, NULL, dep);
+	struct property *prop = menu_add_prop(type, NULL, dep);
+
+	if (isspace(*prompt)) {
+		prop_warn(prop, "leading whitespace ignored");
+		while (isspace(*prompt))
+			prompt++;
+	}
+	if (current_entry->prompt)
+		prop_warn(prop, "prompt redefined");
+
+	/* Apply all upper menus' visibilities to actual prompts. */
+	if (type == P_PROMPT) {
+		struct menu *menu = current_entry;
+
+		while ((menu = menu->parent) != NULL) {
+			struct expr *dup_expr;
+
+			if (!menu->visibility)
+				continue;
+			/*
+			 * Do not add a reference to the menu's visibility
+			 * expression but use a copy of it. Otherwise the
+			 * expression reduction functions will modify
+			 * expressions that have multiple references which
+			 * can cause unwanted side effects.
+			 */
+			dup_expr = expr_copy(menu->visibility);
+
+			prop->visible.expr = expr_alloc_and(prop->visible.expr,
+							    dup_expr);
+		}
+	}
+
+	current_entry->prompt = prop;
+	prop->text = prompt;
+
+	return prop;
 }
 
 void menu_add_visibility(struct expr *expr)
@@ -187,12 +203,12 @@
 
 void menu_add_expr(enum prop_type type, struct expr *expr, struct expr *dep)
 {
-	menu_add_prop(type, NULL, expr, dep);
+	menu_add_prop(type, expr, dep);
 }
 
 void menu_add_symbol(enum prop_type type, struct symbol *sym, struct expr *dep)
 {
-	menu_add_prop(type, NULL, expr_alloc_symbol(sym), dep);
+	menu_add_prop(type, expr_alloc_symbol(sym), dep);
 }
 
 void menu_add_option_modules(void)
@@ -326,12 +342,10 @@
 			 * choice value symbols.
 			 */
 			parentdep = expr_alloc_symbol(sym);
-		} else if (parent->prompt)
-			/* Menu node for 'menu' */
-			parentdep = parent->prompt->visible.expr;
-		else
-			/* Menu node for 'if' */
+		} else {
+			/* Menu node for 'menu', 'if' */
 			parentdep = parent->dep;
+		}
 
 		/* For each child menu node... */
 		for (menu = parent->list; menu; menu = menu->next) {
@@ -698,6 +712,21 @@
 		return "";
 }
 
+static void get_def_str(struct gstr *r, struct menu *menu)
+{
+	str_printf(r, "Defined at %s:%d\n",
+		   menu->file->name, menu->lineno);
+}
+
+static void get_dep_str(struct gstr *r, struct expr *expr, const char *prefix)
+{
+	if (!expr_is_yes(expr)) {
+		str_append(r, prefix);
+		expr_gstr_print(expr, r);
+		str_append(r, "\n");
+	}
+}
+
 static void get_prompt_str(struct gstr *r, struct property *prop,
 			   struct list_head *head)
 {
@@ -705,7 +734,20 @@
 	struct menu *submenu[8], *menu, *location = NULL;
 	struct jump_key *jump = NULL;
 
-	str_printf(r, "Prompt: %s\n", prop->text);
+	str_printf(r, "  Prompt: %s\n", prop->text);
+
+	get_dep_str(r, prop->menu->dep, "  Depends on: ");
+	/*
+	 * Most prompts in Linux have visibility that exactly matches their
+	 * dependencies. For these, we print only the dependencies to improve
+	 * readability. However, prompts with inline "if" expressions and
+	 * prompts with a parent that has a "visible if" expression have
+	 * differing dependencies and visibility. In these rare cases, we
+	 * print both.
+	 */
+	if (!expr_eq(prop->menu->dep, prop->visible.expr))
+		get_dep_str(r, prop->visible.expr, "  Visible if: ");
+
 	menu = prop->menu->parent;
 	for (i = 0; menu != &rootmenu && i < 8; menu = menu->parent) {
 		bool accessible = menu_is_visible(menu);
@@ -755,18 +797,6 @@
 	}
 }
 
-/*
- * get property of type P_SYMBOL
- */
-static struct property *get_symbol_prop(struct symbol *sym)
-{
-	struct property *prop = NULL;
-
-	for_all_properties(sym, prop, P_SYMBOL)
-		break;
-	return prop;
-}
-
 static void get_symbol_props_str(struct gstr *r, struct symbol *sym,
 				 enum prop_type tok, const char *prefix)
 {
@@ -806,32 +836,34 @@
 			}
 		}
 	}
-	for_all_prompts(sym, prop)
-		get_prompt_str(r, prop, head);
 
-	prop = get_symbol_prop(sym);
-	if (prop) {
-		str_printf(r, "  Defined at %s:%d\n", prop->menu->file->name,
-			prop->menu->lineno);
-		if (!expr_is_yes(prop->visible.expr)) {
-			str_append(r, "  Depends on: ");
-			expr_gstr_print(prop->visible.expr, r);
-			str_append(r, "\n");
+	/* Print the definitions with prompts before the ones without */
+	for_all_properties(sym, prop, P_SYMBOL) {
+		if (prop->menu->prompt) {
+			get_def_str(r, prop->menu);
+			get_prompt_str(r, prop->menu->prompt, head);
 		}
 	}
 
-	get_symbol_props_str(r, sym, P_SELECT, "  Selects: ");
-	if (sym->rev_dep.expr) {
-		expr_gstr_print_revdep(sym->rev_dep.expr, r, yes, "  Selected by [y]:\n");
-		expr_gstr_print_revdep(sym->rev_dep.expr, r, mod, "  Selected by [m]:\n");
-		expr_gstr_print_revdep(sym->rev_dep.expr, r, no, "  Selected by [n]:\n");
+	for_all_properties(sym, prop, P_SYMBOL) {
+		if (!prop->menu->prompt) {
+			get_def_str(r, prop->menu);
+			get_dep_str(r, prop->menu->dep, "  Depends on: ");
+		}
 	}
 
-	get_symbol_props_str(r, sym, P_IMPLY, "  Implies: ");
+	get_symbol_props_str(r, sym, P_SELECT, "Selects: ");
+	if (sym->rev_dep.expr) {
+		expr_gstr_print_revdep(sym->rev_dep.expr, r, yes, "Selected by [y]:\n");
+		expr_gstr_print_revdep(sym->rev_dep.expr, r, mod, "Selected by [m]:\n");
+		expr_gstr_print_revdep(sym->rev_dep.expr, r, no, "Selected by [n]:\n");
+	}
+
+	get_symbol_props_str(r, sym, P_IMPLY, "Implies: ");
 	if (sym->implied.expr) {
-		expr_gstr_print_revdep(sym->implied.expr, r, yes, "  Implied by [y]:\n");
-		expr_gstr_print_revdep(sym->implied.expr, r, mod, "  Implied by [m]:\n");
-		expr_gstr_print_revdep(sym->implied.expr, r, no, "  Implied by [n]:\n");
+		expr_gstr_print_revdep(sym->implied.expr, r, yes, "Implied by [y]:\n");
+		expr_gstr_print_revdep(sym->implied.expr, r, mod, "Implied by [m]:\n");
+		expr_gstr_print_revdep(sym->implied.expr, r, no, "Implied by [n]:\n");
 	}
 
 	str_append(r, "\n\n");
diff --git a/scripts/kconfig/nconf-cfg.sh b/scripts/kconfig/nconf-cfg.sh
index 001559e..c212255 100755
--- a/scripts/kconfig/nconf-cfg.sh
+++ b/scripts/kconfig/nconf-cfg.sh
@@ -44,4 +44,7 @@
 echo >&2 "* Install ncurses (ncurses-devel or libncurses-dev"
 echo >&2 "* depending on your distribution)."
 echo >&2 "*"
+echo >&2 "* You may also need to install pkg-config to find the"
+echo >&2 "* ncurses installed in a non-default location."
+echo >&2 "*"
 exit 1
diff --git a/scripts/kconfig/nconf.c b/scripts/kconfig/nconf.c
index 331b2cc..af814b3 100644
--- a/scripts/kconfig/nconf.c
+++ b/scripts/kconfig/nconf.c
@@ -8,6 +8,7 @@
 #define _GNU_SOURCE
 #endif
 #include <string.h>
+#include <strings.h>
 #include <stdlib.h>
 
 #include "lkc.h"
@@ -754,7 +755,6 @@
 			switch (ptype) {
 			case P_MENU:
 				child_count++;
-				prompt = prompt;
 				if (single_menu_mode) {
 					item_make(menu, 'm',
 						"%s%*c%s",
diff --git a/scripts/kconfig/parser.y b/scripts/kconfig/parser.y
index 60936c7..190f111 100644
--- a/scripts/kconfig/parser.y
+++ b/scripts/kconfig/parser.y
@@ -90,7 +90,6 @@
 %left T_LESS T_LESS_EQUAL T_GREATER T_GREATER_EQUAL
 %nonassoc T_NOT
 
-%type <string> prompt
 %type <symbol> nonconst_symbol
 %type <symbol> symbol
 %type <type> type logic_type default
@@ -113,27 +112,31 @@
 
 /* mainmenu entry */
 
-mainmenu_stmt: T_MAINMENU prompt T_EOL
+mainmenu_stmt: T_MAINMENU T_WORD_QUOTE T_EOL
 {
 	menu_add_prompt(P_MENU, $2, NULL);
 };
 
 stmt_list:
 	  /* empty */
-	| stmt_list common_stmt
+	| stmt_list assignment_stmt
 	| stmt_list choice_stmt
+	| stmt_list comment_stmt
+	| stmt_list config_stmt
+	| stmt_list if_stmt
 	| stmt_list menu_stmt
+	| stmt_list menuconfig_stmt
+	| stmt_list source_stmt
 	| stmt_list T_WORD error T_EOL	{ zconf_error("unknown statement \"%s\"", $2); }
 	| stmt_list error T_EOL		{ zconf_error("invalid statement"); }
 ;
 
-common_stmt:
-	  if_stmt
-	| comment_stmt
-	| config_stmt
-	| menuconfig_stmt
-	| source_stmt
-	| assignment_stmt
+stmt_list_in_choice:
+	  /* empty */
+	| stmt_list_in_choice comment_stmt
+	| stmt_list_in_choice config_stmt
+	| stmt_list_in_choice if_stmt_in_choice
+	| stmt_list_in_choice error T_EOL	{ zconf_error("invalid statement"); }
 ;
 
 /* config/menuconfig entry */
@@ -181,7 +184,7 @@
 		$1);
 };
 
-config_option: T_PROMPT prompt if_expr T_EOL
+config_option: T_PROMPT T_WORD_QUOTE if_expr T_EOL
 {
 	menu_add_prompt(P_PROMPT, $2, $3);
 	printd(DEBUG_PARSE, "%s:%d:prompt\n", zconf_curname(), zconf_lineno());
@@ -255,7 +258,7 @@
 	}
 };
 
-choice_stmt: choice_entry choice_block choice_end
+choice_stmt: choice_entry stmt_list_in_choice choice_end
 ;
 
 choice_option_list:
@@ -265,7 +268,7 @@
 	| choice_option_list help
 ;
 
-choice_option: T_PROMPT prompt if_expr T_EOL
+choice_option: T_PROMPT T_WORD_QUOTE if_expr T_EOL
 {
 	menu_add_prompt(P_PROMPT, $2, $3);
 	printd(DEBUG_PARSE, "%s:%d:prompt\n", zconf_curname(), zconf_lineno());
@@ -306,11 +309,6 @@
 	| T_DEF_BOOL		{ $$ = S_BOOLEAN; }
 	| T_DEF_TRISTATE	{ $$ = S_TRISTATE; }
 
-choice_block:
-	  /* empty */
-	| choice_block common_stmt
-;
-
 /* if entry */
 
 if_entry: T_IF expr T_EOL
@@ -332,9 +330,12 @@
 if_stmt: if_entry stmt_list if_end
 ;
 
+if_stmt_in_choice: if_entry stmt_list_in_choice if_end
+;
+
 /* menu entry */
 
-menu: T_MENU prompt T_EOL
+menu: T_MENU T_WORD_QUOTE T_EOL
 {
 	menu_add_entry(NULL);
 	menu_add_prompt(P_MENU, $2, NULL);
@@ -363,7 +364,7 @@
 	| menu_option_list depends
 ;
 
-source_stmt: T_SOURCE prompt T_EOL
+source_stmt: T_SOURCE T_WORD_QUOTE T_EOL
 {
 	printd(DEBUG_PARSE, "%s:%d:source %s\n", zconf_curname(), zconf_lineno(), $2);
 	zconf_nextfile($2);
@@ -372,7 +373,7 @@
 
 /* comment entry */
 
-comment: T_COMMENT prompt T_EOL
+comment: T_COMMENT T_WORD_QUOTE T_EOL
 {
 	menu_add_entry(NULL);
 	menu_add_prompt(P_COMMENT, $2, NULL);
@@ -429,15 +430,11 @@
 
 prompt_stmt_opt:
 	  /* empty */
-	| prompt if_expr
+	| T_WORD_QUOTE if_expr
 {
 	menu_add_prompt(P_PROMPT, $1, $2);
 };
 
-prompt:	  T_WORD
-	| T_WORD_QUOTE
-;
-
 end:	  T_ENDMENU T_EOL	{ $$ = "menu"; }
 	| T_ENDCHOICE T_EOL	{ $$ = "choice"; }
 	| T_ENDIF T_EOL		{ $$ = "if"; }
@@ -665,7 +662,7 @@
 			break;
 		case P_SYMBOL:
 			fputs( "  symbol ", out);
-			fprintf(out, "%s\n", prop->sym->name);
+			fprintf(out, "%s\n", prop->menu->sym->name);
 			break;
 		default:
 			fprintf(out, "  unknown prop %d!\n", prop->type);
@@ -727,5 +724,4 @@
 	}
 }
 
-#include "util.c"
 #include "menu.c"
diff --git a/scripts/kconfig/preprocess.c b/scripts/kconfig/preprocess.c
index 0590f86..748da57 100644
--- a/scripts/kconfig/preprocess.c
+++ b/scripts/kconfig/preprocess.c
@@ -141,7 +141,7 @@
 static char *do_shell(int argc, char *argv[])
 {
 	FILE *p;
-	char buf[256];
+	char buf[4096];
 	char *cmd;
 	size_t nread;
 	int i;
diff --git a/scripts/kconfig/qconf.cc b/scripts/kconfig/qconf.cc
index a94909a..f7eb093 100644
--- a/scripts/kconfig/qconf.cc
+++ b/scripts/kconfig/qconf.cc
@@ -4,34 +4,25 @@
  * Copyright (C) 2015 Boris Barbulovski <bbarbulovski@gmail.com>
  */
 
-#include <qglobal.h>
-
-#include <QMainWindow>
-#include <QList>
-#include <qtextbrowser.h>
 #include <QAction>
+#include <QApplication>
+#include <QCloseEvent>
+#include <QDebug>
+#include <QDesktopWidget>
 #include <QFileDialog>
+#include <QLabel>
+#include <QLayout>
+#include <QList>
 #include <QMenu>
-
-#include <qapplication.h>
-#include <qdesktopwidget.h>
-#include <qtoolbar.h>
-#include <qlayout.h>
-#include <qsplitter.h>
-#include <qlineedit.h>
-#include <qlabel.h>
-#include <qpushbutton.h>
-#include <qmenubar.h>
-#include <qmessagebox.h>
-#include <qregexp.h>
-#include <qevent.h>
+#include <QMenuBar>
+#include <QMessageBox>
+#include <QToolBar>
 
 #include <stdlib.h>
 
 #include "lkc.h"
 #include "qconf.h"
 
-#include "qconf.moc"
 #include "images.h"
 
 
@@ -40,11 +31,6 @@
 
 QAction *ConfigMainWindow::saveAction;
 
-static inline QString qgettext(const char* str)
-{
-	return QString::fromLocal8Bit(str);
-}
-
 ConfigSettings::ConfigSettings()
 	: QSettings("kernel.org", "qconf")
 {
@@ -88,14 +74,13 @@
 	return true;
 }
 
-
-/*
- * set the new data
- * TODO check the value
- */
-void ConfigItem::okRename(int col)
-{
-}
+QIcon ConfigItem::symbolYesIcon;
+QIcon ConfigItem::symbolModIcon;
+QIcon ConfigItem::symbolNoIcon;
+QIcon ConfigItem::choiceYesIcon;
+QIcon ConfigItem::choiceNoIcon;
+QIcon ConfigItem::menuIcon;
+QIcon ConfigItem::menubackIcon;
 
 /*
  * update the displayed of a menu entry
@@ -111,14 +96,14 @@
 
 	list = listView();
 	if (goParent) {
-		setPixmap(promptColIdx, list->menuBackPix);
+		setIcon(promptColIdx, menubackIcon);
 		prompt = "..";
 		goto set_prompt;
 	}
 
 	sym = menu->sym;
 	prop = menu->prompt;
-	prompt = qgettext(menu_get_prompt(menu));
+	prompt = menu_get_prompt(menu);
 
 	if (prop) switch (prop->type) {
 	case P_MENU:
@@ -128,15 +113,15 @@
 			 */
 			if (sym && list->rootEntry == menu)
 				break;
-			setPixmap(promptColIdx, list->menuPix);
+			setIcon(promptColIdx, menuIcon);
 		} else {
 			if (sym)
 				break;
-			setPixmap(promptColIdx, QIcon());
+			setIcon(promptColIdx, QIcon());
 		}
 		goto set_prompt;
 	case P_COMMENT:
-		setPixmap(promptColIdx, QIcon());
+		setIcon(promptColIdx, QIcon());
 		goto set_prompt;
 	default:
 		;
@@ -144,7 +129,7 @@
 	if (!sym)
 		goto set_prompt;
 
-	setText(nameColIdx, QString::fromLocal8Bit(sym->name));
+	setText(nameColIdx, sym->name);
 
 	type = sym_get_type(sym);
 	switch (type) {
@@ -153,57 +138,37 @@
 		char ch;
 
 		if (!sym_is_changeable(sym) && list->optMode == normalOpt) {
-			setPixmap(promptColIdx, QIcon());
-			setText(noColIdx, QString::null);
-			setText(modColIdx, QString::null);
-			setText(yesColIdx, QString::null);
+			setIcon(promptColIdx, QIcon());
 			break;
 		}
 		expr = sym_get_tristate_value(sym);
 		switch (expr) {
 		case yes:
 			if (sym_is_choice_value(sym) && type == S_BOOLEAN)
-				setPixmap(promptColIdx, list->choiceYesPix);
+				setIcon(promptColIdx, choiceYesIcon);
 			else
-				setPixmap(promptColIdx, list->symbolYesPix);
-			setText(yesColIdx, "Y");
+				setIcon(promptColIdx, symbolYesIcon);
 			ch = 'Y';
 			break;
 		case mod:
-			setPixmap(promptColIdx, list->symbolModPix);
-			setText(modColIdx, "M");
+			setIcon(promptColIdx, symbolModIcon);
 			ch = 'M';
 			break;
 		default:
 			if (sym_is_choice_value(sym) && type == S_BOOLEAN)
-				setPixmap(promptColIdx, list->choiceNoPix);
+				setIcon(promptColIdx, choiceNoIcon);
 			else
-				setPixmap(promptColIdx, list->symbolNoPix);
-			setText(noColIdx, "N");
+				setIcon(promptColIdx, symbolNoIcon);
 			ch = 'N';
 			break;
 		}
-		if (expr != no)
-			setText(noColIdx, sym_tristate_within_range(sym, no) ? "_" : 0);
-		if (expr != mod)
-			setText(modColIdx, sym_tristate_within_range(sym, mod) ? "_" : 0);
-		if (expr != yes)
-			setText(yesColIdx, sym_tristate_within_range(sym, yes) ? "_" : 0);
 
 		setText(dataColIdx, QChar(ch));
 		break;
 	case S_INT:
 	case S_HEX:
 	case S_STRING:
-		const char* data;
-
-		data = sym_get_string_value(sym);
-
-		setText(dataColIdx, data);
-		if (type == S_STRING)
-			prompt = QString("%1: %2").arg(prompt).arg(data);
-		else
-			prompt = QString("(%2) %1").arg(prompt).arg(data);
+		setText(dataColIdx, sym_get_string_value(sym));
 		break;
 	}
 	if (!sym_has_value(sym) && visible)
@@ -244,6 +209,17 @@
 		if (list->mode != fullMode)
 			setExpanded(true);
 		sym_calc_value(menu->sym);
+
+		if (menu->sym) {
+			enum symbol_type type = menu->sym->type;
+
+			// Allow to edit "int", "hex", and "string" in-place in
+			// the data column. Unfortunately, you cannot specify
+			// the flags per column. Set ItemIsEditable for all
+			// columns here, and check the column in createEditor().
+			if (type == S_INT || type == S_HEX || type == S_STRING)
+				setFlags(flags() | Qt::ItemIsEditable);
+		}
 	}
 	updateMenu();
 }
@@ -264,53 +240,67 @@
 	}
 }
 
-ConfigLineEdit::ConfigLineEdit(ConfigView* parent)
-	: Parent(parent)
+QWidget *ConfigItemDelegate::createEditor(QWidget *parent,
+					  const QStyleOptionViewItem &option,
+					  const QModelIndex &index) const
 {
-	connect(this, SIGNAL(editingFinished()), SLOT(hide()));
+	ConfigItem *item;
+
+	// Only the data column is editable
+	if (index.column() != dataColIdx)
+		return nullptr;
+
+	// You cannot edit invisible menus
+	item = static_cast<ConfigItem *>(index.internalPointer());
+	if (!item || !item->menu || !menu_is_visible(item->menu))
+		return nullptr;
+
+	return QStyledItemDelegate::createEditor(parent, option, index);
 }
 
-void ConfigLineEdit::show(ConfigItem* i)
+void ConfigItemDelegate::setModelData(QWidget *editor,
+				      QAbstractItemModel *model,
+				      const QModelIndex &index) const
 {
-	item = i;
-	if (sym_get_string_value(item->menu->sym))
-		setText(QString::fromLocal8Bit(sym_get_string_value(item->menu->sym)));
-	else
-		setText(QString::null);
-	Parent::show();
-	setFocus();
-}
+	QLineEdit *lineEdit;
+	ConfigItem *item;
+	struct symbol *sym;
+	bool success;
 
-void ConfigLineEdit::keyPressEvent(QKeyEvent* e)
-{
-	switch (e->key()) {
-	case Qt::Key_Escape:
-		break;
-	case Qt::Key_Return:
-	case Qt::Key_Enter:
-		sym_set_string_value(item->menu->sym, text().toLatin1());
-		parent()->updateList(item);
-		break;
-	default:
-		Parent::keyPressEvent(e);
-		return;
+	lineEdit = qobject_cast<QLineEdit *>(editor);
+	// If this is not a QLineEdit, use the parent's default.
+	// (does this happen?)
+	if (!lineEdit)
+		goto parent;
+
+	item = static_cast<ConfigItem *>(index.internalPointer());
+	if (!item || !item->menu)
+		goto parent;
+
+	sym = item->menu->sym;
+	if (!sym)
+		goto parent;
+
+	success = sym_set_string_value(sym, lineEdit->text().toUtf8().data());
+	if (success) {
+		ConfigList::updateListForAll();
+	} else {
+		QMessageBox::information(editor, "qconf",
+			"Cannot set the data (maybe due to out of range).\n"
+			"Setting the old value.");
+		lineEdit->setText(sym_get_string_value(sym));
 	}
-	e->accept();
-	parent()->list->setFocus();
-	hide();
+
+parent:
+	QStyledItemDelegate::setModelData(editor, model, index);
 }
 
-ConfigList::ConfigList(ConfigView* p, const char *name)
-	: Parent(p),
+ConfigList::ConfigList(QWidget *parent, const char *name)
+	: QTreeWidget(parent),
 	  updateAll(false),
-	  symbolYesPix(xpm_symbol_yes), symbolModPix(xpm_symbol_mod), symbolNoPix(xpm_symbol_no),
-	  choiceYesPix(xpm_choice_yes), choiceNoPix(xpm_choice_no),
-	  menuPix(xpm_menu), menuInvPix(xpm_menu_inv), menuBackPix(xpm_menuback), voidPix(xpm_void),
-	  showName(false), showRange(false), showData(false), mode(singleMode), optMode(normalOpt),
+	  showName(false), mode(singleMode), optMode(normalOpt),
 	  rootEntry(0), headerPopup(0)
 {
-	int i;
-
 	setObjectName(name);
 	setSortingEnabled(false);
 	setRootIsDecorated(true);
@@ -318,7 +308,7 @@
 	setVerticalScrollMode(ScrollPerPixel);
 	setHorizontalScrollMode(ScrollPerPixel);
 
-	setHeaderLabels(QStringList() << "Option" << "Name" << "N" << "M" << "Y" << "Value");
+	setHeaderLabels(QStringList() << "Option" << "Name" << "Value");
 
 	connect(this, SIGNAL(itemSelectionChanged(void)),
 		SLOT(updateSelection(void)));
@@ -326,18 +316,25 @@
 	if (name) {
 		configSettings->beginGroup(name);
 		showName = configSettings->value("/showName", false).toBool();
-		showRange = configSettings->value("/showRange", false).toBool();
-		showData = configSettings->value("/showData", false).toBool();
 		optMode = (enum optionMode)configSettings->value("/optionMode", 0).toInt();
 		configSettings->endGroup();
 		connect(configApp, SIGNAL(aboutToQuit()), SLOT(saveSettings()));
 	}
 
-	addColumn(promptColIdx);
+	showColumn(promptColIdx);
+
+	setItemDelegate(new ConfigItemDelegate(this));
+
+	allLists.append(this);
 
 	reinit();
 }
 
+ConfigList::~ConfigList()
+{
+	allLists.removeOne(this);
+}
+
 bool ConfigList::menuSkip(struct menu *menu)
 {
 	if (optMode == normalOpt && menu_is_visible(menu))
@@ -351,21 +348,22 @@
 
 void ConfigList::reinit(void)
 {
-	removeColumn(dataColIdx);
-	removeColumn(yesColIdx);
-	removeColumn(modColIdx);
-	removeColumn(noColIdx);
-	removeColumn(nameColIdx);
+	hideColumn(nameColIdx);
 
 	if (showName)
-		addColumn(nameColIdx);
-	if (showRange) {
-		addColumn(noColIdx);
-		addColumn(modColIdx);
-		addColumn(yesColIdx);
-	}
-	if (showData)
-		addColumn(dataColIdx);
+		showColumn(nameColIdx);
+
+	updateListAll();
+}
+
+void ConfigList::setOptionMode(QAction *action)
+{
+	if (action == showNormalAction)
+		optMode = normalOpt;
+	else if (action == showAllAction)
+		optMode = allOpt;
+	else
+		optMode = promptOpt;
 
 	updateListAll();
 }
@@ -375,8 +373,6 @@
 	if (!objectName().isEmpty()) {
 		configSettings->beginGroup(objectName());
 		configSettings->setValue("/showName", showName);
-		configSettings->setValue("/showRange", showRange);
-		configSettings->setValue("/showData", showData);
 		configSettings->setValue("/optionMode", (int)optMode);
 		configSettings->endGroup();
 	}
@@ -415,15 +411,15 @@
 		emit menuSelected(menu);
 }
 
-void ConfigList::updateList(ConfigItem* item)
+void ConfigList::updateList()
 {
 	ConfigItem* last = 0;
+	ConfigItem *item;
 
 	if (!rootEntry) {
 		if (mode != listMode)
 			goto update;
 		QTreeWidgetItemIterator it(this);
-		ConfigItem* item;
 
 		while (*it) {
 			item = (ConfigItem*)(*it);
@@ -445,7 +441,7 @@
 	}
 	if ((mode == singleMode || (mode == symbolMode && !(rootEntry->flags & MENU_ROOT))) &&
 	    rootEntry->sym && rootEntry->prompt) {
-		item = last ? last->nextSibling() : firstChild();
+		item = last ? last->nextSibling() : nullptr;
 		if (!item)
 			item = new ConfigItem(this, last, rootEntry, true);
 		else
@@ -457,11 +453,33 @@
 		return;
 	}
 update:
-	updateMenuList(this, rootEntry);
+	updateMenuList(rootEntry);
 	update();
 	resizeColumnToContents(0);
 }
 
+void ConfigList::updateListForAll()
+{
+	QListIterator<ConfigList *> it(allLists);
+
+	while (it.hasNext()) {
+		ConfigList *list = it.next();
+
+		list->updateList();
+	}
+}
+
+void ConfigList::updateListAllForAll()
+{
+	QListIterator<ConfigList *> it(allLists);
+
+	while (it.hasNext()) {
+		ConfigList *list = it.next();
+
+		list->updateList();
+	}
+}
+
 void ConfigList::setValue(ConfigItem* item, tristate val)
 {
 	struct symbol* sym;
@@ -482,7 +500,7 @@
 			return;
 		if (oldval == no && item->menu->list)
 			item->setExpanded(true);
-		parent()->updateList(item);
+		ConfigList::updateListForAll();
 		break;
 	}
 }
@@ -516,12 +534,9 @@
 				item->setExpanded(true);
 		}
 		if (oldexpr != newexpr)
-			parent()->updateList(item);
+			ConfigList::updateListForAll();
 		break;
-	case S_INT:
-	case S_HEX:
-	case S_STRING:
-		parent()->lineEdit->show(item);
+	default:
 		break;
 	}
 }
@@ -535,11 +550,11 @@
 	type = menu && menu->prompt ? menu->prompt->type : P_UNKNOWN;
 	if (type != P_MENU)
 		return;
-	updateMenuList(this, 0);
+	updateMenuList(0);
 	rootEntry = menu;
 	updateListAll();
 	if (currentItem()) {
-		currentItem()->setSelected(hasFocus());
+		setSelected(currentItem(), hasFocus());
 		scrollToItem(currentItem());
 	}
 }
@@ -639,7 +654,7 @@
 	}
 }
 
-void ConfigList::updateMenuList(ConfigList *parent, struct menu* menu)
+void ConfigList::updateMenuList(struct menu *menu)
 {
 	struct menu* child;
 	ConfigItem* item;
@@ -648,19 +663,19 @@
 	enum prop_type type;
 
 	if (!menu) {
-		while (parent->topLevelItemCount() > 0)
+		while (topLevelItemCount() > 0)
 		{
-			delete parent->takeTopLevelItem(0);
+			delete takeTopLevelItem(0);
 		}
 
 		return;
 	}
 
-	last = (ConfigItem*)parent->topLevelItem(0);
+	last = (ConfigItem *)topLevelItem(0);
 	if (last && !last->goParent)
 		last = 0;
 	for (child = menu->list; child; child = child->next) {
-		item = last ? last->nextSibling() : (ConfigItem*)parent->topLevelItem(0);
+		item = last ? last->nextSibling() : (ConfigItem *)topLevelItem(0);
 		type = child->prompt ? child->prompt->type : P_UNKNOWN;
 
 		switch (mode) {
@@ -681,7 +696,7 @@
 			if (!child->sym && !child->list && !child->prompt)
 				continue;
 			if (!item || item->menu != child)
-				item = new ConfigItem(parent, last, child, visible);
+				item = new ConfigItem(this, last, child, visible);
 			else
 				item->testUpdateMenu(visible);
 
@@ -694,7 +709,7 @@
 		}
 hide:
 		if (item && item->menu == child) {
-			last = (ConfigItem*)parent->topLevelItem(0);
+			last = (ConfigItem *)topLevelItem(0);
 			if (last == item)
 				last = 0;
 			else while (last->nextSibling() != item)
@@ -736,7 +751,10 @@
 		type = menu->prompt ? menu->prompt->type : P_UNKNOWN;
 		if (type == P_MENU && rootEntry != menu &&
 		    mode != fullMode && mode != menuMode) {
-			emit menuSelected(menu);
+			if (mode == menuMode)
+				emit menuSelected(menu);
+			else
+				emit itemSelected(menu);
 			break;
 		}
 	case Qt::Key_Space:
@@ -782,7 +800,7 @@
 	idx = header()->logicalIndexAt(x);
 	switch (idx) {
 	case promptColIdx:
-		icon = item->pixmap(promptColIdx);
+		icon = item->icon(promptColIdx);
 		if (!icon.isNull()) {
 			int off = header()->sectionPosition(0) + visualRect(indexAt(p)).x() + 4; // 4 is Hardcoded image offset. There might be a way to do it properly.
 			if (x >= off && x < off + icon.availableSizes().first().width()) {
@@ -793,22 +811,14 @@
 					break;
 				ptype = menu->prompt ? menu->prompt->type : P_UNKNOWN;
 				if (ptype == P_MENU && rootEntry != menu &&
-				    mode != fullMode && mode != menuMode)
+				    mode != fullMode && mode != menuMode &&
+                                    mode != listMode)
 					emit menuSelected(menu);
 				else
 					changeValue(item);
 			}
 		}
 		break;
-	case noColIdx:
-		setValue(item, no);
-		break;
-	case modColIdx:
-		setValue(item, mod);
-		break;
-	case yesColIdx:
-		setValue(item, yes);
-		break;
 	case dataColIdx:
 		changeValue(item);
 		break;
@@ -828,7 +838,7 @@
 
 void ConfigList::mouseDoubleClickEvent(QMouseEvent* e)
 {
-	QPoint p = e->pos(); // TODO: Check if this works(was contentsToViewport).
+	QPoint p = e->pos();
 	ConfigItem* item = (ConfigItem*)itemAt(p);
 	struct menu *menu;
 	enum prop_type ptype;
@@ -843,9 +853,12 @@
 	if (!menu)
 		goto skip;
 	ptype = menu->prompt ? menu->prompt->type : P_UNKNOWN;
-	if (ptype == P_MENU && (mode == singleMode || mode == symbolMode))
-		emit menuSelected(menu);
-	else if (menu->sym)
+	if (ptype == P_MENU && mode != listMode) {
+		if (mode == singleMode)
+			emit itemSelected(menu);
+		else if (mode == symbolMode)
+			emit menuSelected(menu);
+	} else if (menu->sym)
 		changeValue(item);
 
 skip:
@@ -861,7 +874,7 @@
 
 	ConfigItem* item = (ConfigItem *)currentItem();
 	if (item) {
-		item->setSelected(true);
+		setSelected(item, true);
 		menu = item->menu;
 	}
 	emit gotFocus(menu);
@@ -876,107 +889,31 @@
 		action = new QAction("Show Name", this);
 		action->setCheckable(true);
 		connect(action, SIGNAL(toggled(bool)),
-			parent(), SLOT(setShowName(bool)));
-		connect(parent(), SIGNAL(showNameChanged(bool)),
+			SLOT(setShowName(bool)));
+		connect(this, SIGNAL(showNameChanged(bool)),
 			action, SLOT(setChecked(bool)));
 		action->setChecked(showName);
 		headerPopup->addAction(action);
-
-		action = new QAction("Show Range", this);
-		action->setCheckable(true);
-		connect(action, SIGNAL(toggled(bool)),
-			parent(), SLOT(setShowRange(bool)));
-		connect(parent(), SIGNAL(showRangeChanged(bool)),
-			action, SLOT(setChecked(bool)));
-		action->setChecked(showRange);
-		headerPopup->addAction(action);
-
-		action = new QAction("Show Data", this);
-		action->setCheckable(true);
-		connect(action, SIGNAL(toggled(bool)),
-			parent(), SLOT(setShowData(bool)));
-		connect(parent(), SIGNAL(showDataChanged(bool)),
-			action, SLOT(setChecked(bool)));
-		action->setChecked(showData);
-		headerPopup->addAction(action);
 	}
 
 	headerPopup->exec(e->globalPos());
 	e->accept();
 }
 
-ConfigView*ConfigView::viewList;
-QAction *ConfigView::showNormalAction;
-QAction *ConfigView::showAllAction;
-QAction *ConfigView::showPromptAction;
-
-ConfigView::ConfigView(QWidget* parent, const char *name)
-	: Parent(parent)
+void ConfigList::setShowName(bool on)
 {
-	setObjectName(name);
-	QVBoxLayout *verticalLayout = new QVBoxLayout(this);
-	verticalLayout->setContentsMargins(0, 0, 0, 0);
+	if (showName == on)
+		return;
 
-	list = new ConfigList(this);
-	verticalLayout->addWidget(list);
-	lineEdit = new ConfigLineEdit(this);
-	lineEdit->hide();
-	verticalLayout->addWidget(lineEdit);
-
-	this->nextView = viewList;
-	viewList = this;
+	showName = on;
+	reinit();
+	emit showNameChanged(on);
 }
 
-ConfigView::~ConfigView(void)
-{
-	ConfigView** vp;
-
-	for (vp = &viewList; *vp; vp = &(*vp)->nextView) {
-		if (*vp == this) {
-			*vp = nextView;
-			break;
-		}
-	}
-}
-
-void ConfigView::setOptionMode(QAction *act)
-{
-	if (act == showNormalAction)
-		list->optMode = normalOpt;
-	else if (act == showAllAction)
-		list->optMode = allOpt;
-	else
-		list->optMode = promptOpt;
-
-	list->updateListAll();
-}
-
-void ConfigView::setShowName(bool b)
-{
-	if (list->showName != b) {
-		list->showName = b;
-		list->reinit();
-		emit showNameChanged(b);
-	}
-}
-
-void ConfigView::setShowRange(bool b)
-{
-	if (list->showRange != b) {
-		list->showRange = b;
-		list->reinit();
-		emit showRangeChanged(b);
-	}
-}
-
-void ConfigView::setShowData(bool b)
-{
-	if (list->showData != b) {
-		list->showData = b;
-		list->reinit();
-		emit showDataChanged(b);
-	}
-}
+QList<ConfigList *> ConfigList::allLists;
+QAction *ConfigList::showNormalAction;
+QAction *ConfigList::showAllAction;
+QAction *ConfigList::showPromptAction;
 
 void ConfigList::setAllOpen(bool open)
 {
@@ -989,27 +926,11 @@
 	}
 }
 
-void ConfigView::updateList(ConfigItem* item)
-{
-	ConfigView* v;
-
-	for (v = viewList; v; v = v->nextView)
-		v->list->updateList(item);
-}
-
-void ConfigView::updateListAll(void)
-{
-	ConfigView* v;
-
-	for (v = viewList; v; v = v->nextView)
-		v->list->updateListAll();
-}
-
 ConfigInfoView::ConfigInfoView(QWidget* parent, const char *name)
 	: Parent(parent), sym(0), _menu(0)
 {
 	setObjectName(name);
-
+	setOpenLinks(false);
 
 	if (!objectName().isEmpty()) {
 		configSettings->beginGroup(objectName());
@@ -1017,6 +938,16 @@
 		configSettings->endGroup();
 		connect(configApp, SIGNAL(aboutToQuit()), SLOT(saveSettings()));
 	}
+
+	contextMenu = createStandardContextMenu();
+	QAction *action = new QAction("Show Debug Info", contextMenu);
+
+	action->setCheckable(true);
+	connect(action, SIGNAL(toggled(bool)), SLOT(setShowDebug(bool)));
+	connect(this, SIGNAL(showDebugChanged(bool)), action, SLOT(setChecked(bool)));
+	action->setChecked(showDebug());
+	contextMenu->addSeparator();
+	contextMenu->addAction(action);
 }
 
 void ConfigInfoView::saveSettings(void)
@@ -1071,108 +1002,119 @@
 void ConfigInfoView::menuInfo(void)
 {
 	struct symbol* sym;
-	QString head, debug, help;
+	QString info;
+	QTextStream stream(&info);
 
 	sym = _menu->sym;
 	if (sym) {
 		if (_menu->prompt) {
-			head += "<big><b>";
-			head += print_filter(_menu->prompt->text);
-			head += "</b></big>";
+			stream << "<big><b>";
+			stream << print_filter(_menu->prompt->text);
+			stream << "</b></big>";
 			if (sym->name) {
-				head += " (";
+				stream << " (";
 				if (showDebug())
-					head += QString().sprintf("<a href=\"s%p\">", sym);
-				head += print_filter(sym->name);
+					stream << "<a href=\"s" << sym->name << "\">";
+				stream << print_filter(sym->name);
 				if (showDebug())
-					head += "</a>";
-				head += ")";
+					stream << "</a>";
+				stream << ")";
 			}
 		} else if (sym->name) {
-			head += "<big><b>";
+			stream << "<big><b>";
 			if (showDebug())
-				head += QString().sprintf("<a href=\"s%p\">", sym);
-			head += print_filter(sym->name);
+				stream << "<a href=\"s" << sym->name << "\">";
+			stream << print_filter(sym->name);
 			if (showDebug())
-				head += "</a>";
-			head += "</b></big>";
+				stream << "</a>";
+			stream << "</b></big>";
 		}
-		head += "<br><br>";
+		stream << "<br><br>";
 
 		if (showDebug())
-			debug = debug_info(sym);
+			stream << debug_info(sym);
 
 		struct gstr help_gstr = str_new();
+
 		menu_get_ext_help(_menu, &help_gstr);
-		help = print_filter(str_get(&help_gstr));
+		stream << print_filter(str_get(&help_gstr));
 		str_free(&help_gstr);
 	} else if (_menu->prompt) {
-		head += "<big><b>";
-		head += print_filter(_menu->prompt->text);
-		head += "</b></big><br><br>";
+		stream << "<big><b>";
+		stream << print_filter(_menu->prompt->text);
+		stream << "</b></big><br><br>";
 		if (showDebug()) {
 			if (_menu->prompt->visible.expr) {
-				debug += "&nbsp;&nbsp;dep: ";
-				expr_print(_menu->prompt->visible.expr, expr_print_help, &debug, E_NONE);
-				debug += "<br><br>";
+				stream << "&nbsp;&nbsp;dep: ";
+				expr_print(_menu->prompt->visible.expr,
+					   expr_print_help, &stream, E_NONE);
+				stream << "<br><br>";
 			}
+
+			stream << "defined at " << _menu->file->name << ":"
+			       << _menu->lineno << "<br><br>";
 		}
 	}
-	if (showDebug())
-		debug += QString().sprintf("defined at %s:%d<br><br>", _menu->file->name, _menu->lineno);
 
-	setText(head + debug + help);
+	setText(info);
 }
 
 QString ConfigInfoView::debug_info(struct symbol *sym)
 {
 	QString debug;
+	QTextStream stream(&debug);
 
-	debug += "type: ";
-	debug += print_filter(sym_type_name(sym->type));
+	stream << "type: ";
+	stream << print_filter(sym_type_name(sym->type));
 	if (sym_is_choice(sym))
-		debug += " (choice)";
+		stream << " (choice)";
 	debug += "<br>";
 	if (sym->rev_dep.expr) {
-		debug += "reverse dep: ";
-		expr_print(sym->rev_dep.expr, expr_print_help, &debug, E_NONE);
-		debug += "<br>";
+		stream << "reverse dep: ";
+		expr_print(sym->rev_dep.expr, expr_print_help, &stream, E_NONE);
+		stream << "<br>";
 	}
 	for (struct property *prop = sym->prop; prop; prop = prop->next) {
 		switch (prop->type) {
 		case P_PROMPT:
 		case P_MENU:
-			debug += QString().sprintf("prompt: <a href=\"m%p\">", prop->menu);
-			debug += print_filter(prop->text);
-			debug += "</a><br>";
+			stream << "prompt: <a href=\"m" << sym->name << "\">";
+			stream << print_filter(prop->text);
+			stream << "</a><br>";
 			break;
 		case P_DEFAULT:
 		case P_SELECT:
 		case P_RANGE:
-			debug += prop_get_type_name(prop->type);
-			debug += ": ";
-			expr_print(prop->expr, expr_print_help, &debug, E_NONE);
-			debug += "<br>";
+		case P_COMMENT:
+		case P_IMPLY:
+		case P_SYMBOL:
+			stream << prop_get_type_name(prop->type);
+			stream << ": ";
+			expr_print(prop->expr, expr_print_help,
+				   &stream, E_NONE);
+			stream << "<br>";
 			break;
 		case P_CHOICE:
 			if (sym_is_choice(sym)) {
-				debug += "choice: ";
-				expr_print(prop->expr, expr_print_help, &debug, E_NONE);
-				debug += "<br>";
+				stream << "choice: ";
+				expr_print(prop->expr, expr_print_help,
+					   &stream, E_NONE);
+				stream << "<br>";
 			}
 			break;
 		default:
-			debug += "unknown property: ";
-			debug += prop_get_type_name(prop->type);
-			debug += "<br>";
+			stream << "unknown property: ";
+			stream << prop_get_type_name(prop->type);
+			stream << "<br>";
 		}
 		if (prop->visible.expr) {
-			debug += "&nbsp;&nbsp;&nbsp;&nbsp;dep: ";
-			expr_print(prop->visible.expr, expr_print_help, &debug, E_NONE);
-			debug += "<br>";
+			stream << "&nbsp;&nbsp;&nbsp;&nbsp;dep: ";
+			expr_print(prop->visible.expr, expr_print_help,
+				   &stream, E_NONE);
+			stream << "<br>";
 		}
 	}
-	debug += "<br>";
+	stream << "<br>";
 
 	return debug;
 }
@@ -1210,46 +1152,81 @@
 
 void ConfigInfoView::expr_print_help(void *data, struct symbol *sym, const char *str)
 {
-	QString* text = reinterpret_cast<QString*>(data);
-	QString str2 = print_filter(str);
+	QTextStream *stream = reinterpret_cast<QTextStream *>(data);
 
 	if (sym && sym->name && !(sym->flags & SYMBOL_CONST)) {
-		*text += QString().sprintf("<a href=\"s%p\">", sym);
-		*text += str2;
-		*text += "</a>";
-	} else
-		*text += str2;
+		*stream << "<a href=\"s" << sym->name << "\">";
+		*stream << print_filter(str);
+		*stream << "</a>";
+	} else {
+		*stream << print_filter(str);
+	}
 }
 
-QMenu* ConfigInfoView::createStandardContextMenu(const QPoint & pos)
+void ConfigInfoView::clicked(const QUrl &url)
 {
-	QMenu* popup = Parent::createStandardContextMenu(pos);
-	QAction* action = new QAction("Show Debug Info", popup);
+	QByteArray str = url.toEncoded();
+	const std::size_t count = str.size();
+	char *data = new char[count + 1];
+	struct symbol **result;
+	struct menu *m = NULL;
 
-	action->setCheckable(true);
-	connect(action, SIGNAL(toggled(bool)), SLOT(setShowDebug(bool)));
-	connect(this, SIGNAL(showDebugChanged(bool)), action, SLOT(setChecked(bool)));
-	action->setChecked(showDebug());
-	popup->addSeparator();
-	popup->addAction(action);
-	return popup;
+	if (count < 1) {
+		delete[] data;
+		return;
+	}
+
+	memcpy(data, str.constData(), count);
+	data[count] = '\0';
+
+	/* Seek for exact match */
+	data[0] = '^';
+	strcat(data, "$");
+	result = sym_re_search(data);
+	if (!result) {
+		delete[] data;
+		return;
+	}
+
+	sym = *result;
+
+	/* Seek for the menu which holds the symbol */
+	for (struct property *prop = sym->prop; prop; prop = prop->next) {
+		    if (prop->type != P_PROMPT && prop->type != P_MENU)
+			    continue;
+		    m = prop->menu;
+		    break;
+	}
+
+	if (!m) {
+		/* Symbol is not visible as a menu */
+		symbolInfo();
+		emit showDebugChanged(true);
+	} else {
+		emit menuSelected(m);
+	}
+
+	free(result);
+	delete[] data;
 }
 
-void ConfigInfoView::contextMenuEvent(QContextMenuEvent *e)
+void ConfigInfoView::contextMenuEvent(QContextMenuEvent *event)
 {
-	Parent::contextMenuEvent(e);
+	contextMenu->popup(event->globalPos());
+	event->accept();
 }
 
-ConfigSearchWindow::ConfigSearchWindow(ConfigMainWindow* parent, const char *name)
+ConfigSearchWindow::ConfigSearchWindow(ConfigMainWindow *parent)
 	: Parent(parent), result(NULL)
 {
-	setObjectName(name);
+	setObjectName("search");
 	setWindowTitle("Search Config");
 
 	QVBoxLayout* layout1 = new QVBoxLayout(this);
 	layout1->setContentsMargins(11, 11, 11, 11);
 	layout1->setSpacing(6);
-	QHBoxLayout* layout2 = new QHBoxLayout(0);
+
+	QHBoxLayout* layout2 = new QHBoxLayout();
 	layout2->setContentsMargins(0, 0, 0, 0);
 	layout2->setSpacing(6);
 	layout2->addWidget(new QLabel("Find:", this));
@@ -1264,35 +1241,33 @@
 
 	split = new QSplitter(this);
 	split->setOrientation(Qt::Vertical);
-	list = new ConfigView(split, name);
-	list->list->mode = listMode;
-	info = new ConfigInfoView(split, name);
-	connect(list->list, SIGNAL(menuChanged(struct menu *)),
+	list = new ConfigList(split, "search");
+	list->mode = listMode;
+	info = new ConfigInfoView(split, "search");
+	connect(list, SIGNAL(menuChanged(struct menu *)),
 		info, SLOT(setInfo(struct menu *)));
-	connect(list->list, SIGNAL(menuChanged(struct menu *)),
+	connect(list, SIGNAL(menuChanged(struct menu *)),
 		parent, SLOT(setMenuLink(struct menu *)));
 
 	layout1->addWidget(split);
 
-	if (name) {
-		QVariant x, y;
-		int width, height;
-		bool ok;
+	QVariant x, y;
+	int width, height;
+	bool ok;
 
-		configSettings->beginGroup(name);
-		width = configSettings->value("/window width", parent->width() / 2).toInt();
-		height = configSettings->value("/window height", parent->height() / 2).toInt();
-		resize(width, height);
-		x = configSettings->value("/window x");
-		y = configSettings->value("/window y");
-		if ((x.isValid())&&(y.isValid()))
-			move(x.toInt(), y.toInt());
-		QList<int> sizes = configSettings->readSizes("/split", &ok);
-		if (ok)
-			split->setSizes(sizes);
-		configSettings->endGroup();
-		connect(configApp, SIGNAL(aboutToQuit()), SLOT(saveSettings()));
-	}
+	configSettings->beginGroup("search");
+	width = configSettings->value("/window width", parent->width() / 2).toInt();
+	height = configSettings->value("/window height", parent->height() / 2).toInt();
+	resize(width, height);
+	x = configSettings->value("/window x");
+	y = configSettings->value("/window y");
+	if (x.isValid() && y.isValid())
+		move(x.toInt(), y.toInt());
+	QList<int> sizes = configSettings->readSizes("/split", &ok);
+	if (ok)
+		split->setSizes(sizes);
+	configSettings->endGroup();
+	connect(configApp, SIGNAL(aboutToQuit()), SLOT(saveSettings()));
 }
 
 void ConfigSearchWindow::saveSettings(void)
@@ -1315,7 +1290,7 @@
 	ConfigItem *lastItem = NULL;
 
 	free(result);
-	list->list->clear();
+	list->clear();
 	info->clear();
 
 	result = sym_re_search(editField->text().toLatin1());
@@ -1323,7 +1298,7 @@
 		return;
 	for (p = result; *p; p++) {
 		for_all_prompts((*p), prop)
-			lastItem = new ConfigItem(list->list, lastItem, prop->menu,
+			lastItem = new ConfigItem(list, lastItem, prop->menu,
 						  menu_is_visible(prop->menu));
 	}
 }
@@ -1334,7 +1309,6 @@
 ConfigMainWindow::ConfigMainWindow(void)
 	: searchWindow(0)
 {
-	QMenuBar* menu;
 	bool ok = true;
 	QVariant x, y;
 	int width, height;
@@ -1355,42 +1329,60 @@
 	if ((x.isValid())&&(y.isValid()))
 		move(x.toInt(), y.toInt());
 
-	split1 = new QSplitter(this);
+	// set up icons
+	ConfigItem::symbolYesIcon = QIcon(QPixmap(xpm_symbol_yes));
+	ConfigItem::symbolModIcon = QIcon(QPixmap(xpm_symbol_mod));
+	ConfigItem::symbolNoIcon = QIcon(QPixmap(xpm_symbol_no));
+	ConfigItem::choiceYesIcon = QIcon(QPixmap(xpm_choice_yes));
+	ConfigItem::choiceNoIcon = QIcon(QPixmap(xpm_choice_no));
+	ConfigItem::menuIcon = QIcon(QPixmap(xpm_menu));
+	ConfigItem::menubackIcon = QIcon(QPixmap(xpm_menuback));
+
+	QWidget *widget = new QWidget(this);
+	QVBoxLayout *layout = new QVBoxLayout(widget);
+	setCentralWidget(widget);
+
+	split1 = new QSplitter(widget);
 	split1->setOrientation(Qt::Horizontal);
-	setCentralWidget(split1);
+	split1->setChildrenCollapsible(false);
 
-	menuView = new ConfigView(split1, "menu");
-	menuList = menuView->list;
+	menuList = new ConfigList(widget, "menu");
 
-	split2 = new QSplitter(split1);
+	split2 = new QSplitter(widget);
+	split2->setChildrenCollapsible(false);
 	split2->setOrientation(Qt::Vertical);
 
 	// create config tree
-	configView = new ConfigView(split2, "config");
-	configList = configView->list;
+	configList = new ConfigList(widget, "config");
 
-	helpText = new ConfigInfoView(split2, "help");
+	helpText = new ConfigInfoView(widget, "help");
+
+	layout->addWidget(split2);
+	split2->addWidget(split1);
+	split1->addWidget(configList);
+	split1->addWidget(menuList);
+	split2->addWidget(helpText);
 
 	setTabOrder(configList, helpText);
 	configList->setFocus();
 
-	menu = menuBar();
-	toolBar = new QToolBar("Tools", this);
-	addToolBar(toolBar);
-
 	backAction = new QAction(QPixmap(xpm_back), "Back", this);
-	  connect(backAction, SIGNAL(triggered(bool)), SLOT(goBack()));
-	  backAction->setEnabled(false);
+	connect(backAction, SIGNAL(triggered(bool)), SLOT(goBack()));
+
 	QAction *quitAction = new QAction("&Quit", this);
 	quitAction->setShortcut(Qt::CTRL + Qt::Key_Q);
-	  connect(quitAction, SIGNAL(triggered(bool)), SLOT(close()));
+	connect(quitAction, SIGNAL(triggered(bool)), SLOT(close()));
+
 	QAction *loadAction = new QAction(QPixmap(xpm_load), "&Load", this);
 	loadAction->setShortcut(Qt::CTRL + Qt::Key_L);
-	  connect(loadAction, SIGNAL(triggered(bool)), SLOT(loadConfig()));
+	connect(loadAction, SIGNAL(triggered(bool)), SLOT(loadConfig()));
+
 	saveAction = new QAction(QPixmap(xpm_save), "&Save", this);
 	saveAction->setShortcut(Qt::CTRL + Qt::Key_S);
-	  connect(saveAction, SIGNAL(triggered(bool)), SLOT(saveConfig()));
+	connect(saveAction, SIGNAL(triggered(bool)), SLOT(saveConfig()));
+
 	conf_set_changed_callback(conf_changed);
+
 	// Set saveAction's initial state
 	conf_changed();
 	configname = xstrdup(conf_get_configname());
@@ -1412,28 +1404,22 @@
 
 	QAction *showNameAction = new QAction("Show Name", this);
 	  showNameAction->setCheckable(true);
-	  connect(showNameAction, SIGNAL(toggled(bool)), configView, SLOT(setShowName(bool)));
-	  showNameAction->setChecked(configView->showName());
-	QAction *showRangeAction = new QAction("Show Range", this);
-	  showRangeAction->setCheckable(true);
-	  connect(showRangeAction, SIGNAL(toggled(bool)), configView, SLOT(setShowRange(bool)));
-	QAction *showDataAction = new QAction("Show Data", this);
-	  showDataAction->setCheckable(true);
-	  connect(showDataAction, SIGNAL(toggled(bool)), configView, SLOT(setShowData(bool)));
+	connect(showNameAction, SIGNAL(toggled(bool)), configList, SLOT(setShowName(bool)));
+	showNameAction->setChecked(configList->showName);
 
 	QActionGroup *optGroup = new QActionGroup(this);
 	optGroup->setExclusive(true);
-	connect(optGroup, SIGNAL(triggered(QAction*)), configView,
+	connect(optGroup, SIGNAL(triggered(QAction*)), configList,
 		SLOT(setOptionMode(QAction *)));
-	connect(optGroup, SIGNAL(triggered(QAction *)), menuView,
+	connect(optGroup, SIGNAL(triggered(QAction *)), menuList,
 		SLOT(setOptionMode(QAction *)));
 
-	configView->showNormalAction = new QAction("Show Normal Options", optGroup);
-	configView->showAllAction = new QAction("Show All Options", optGroup);
-	configView->showPromptAction = new QAction("Show Prompt Options", optGroup);
-	configView->showNormalAction->setCheckable(true);
-	configView->showAllAction->setCheckable(true);
-	configView->showPromptAction->setCheckable(true);
+	ConfigList::showNormalAction = new QAction("Show Normal Options", optGroup);
+	ConfigList::showNormalAction->setCheckable(true);
+	ConfigList::showAllAction = new QAction("Show All Options", optGroup);
+	ConfigList::showAllAction->setCheckable(true);
+	ConfigList::showPromptAction = new QAction("Show Prompt Options", optGroup);
+	ConfigList::showPromptAction->setCheckable(true);
 
 	QAction *showDebugAction = new QAction("Show Debug Info", this);
 	  showDebugAction->setCheckable(true);
@@ -1446,6 +1432,7 @@
 	  connect(showAboutAction, SIGNAL(triggered(bool)), SLOT(showAbout()));
 
 	// init tool bar
+	QToolBar *toolBar = addToolBar("Tools");
 	toolBar->addAction(backAction);
 	toolBar->addSeparator();
 	toolBar->addAction(loadAction);
@@ -1455,38 +1442,40 @@
 	toolBar->addAction(splitViewAction);
 	toolBar->addAction(fullViewAction);
 
-	// create config menu
-	QMenu* config = menu->addMenu("&File");
-	config->addAction(loadAction);
-	config->addAction(saveAction);
-	config->addAction(saveAsAction);
-	config->addSeparator();
-	config->addAction(quitAction);
+	// create file menu
+	QMenu *menu = menuBar()->addMenu("&File");
+	menu->addAction(loadAction);
+	menu->addAction(saveAction);
+	menu->addAction(saveAsAction);
+	menu->addSeparator();
+	menu->addAction(quitAction);
 
 	// create edit menu
-	QMenu* editMenu = menu->addMenu("&Edit");
-	editMenu->addAction(searchAction);
+	menu = menuBar()->addMenu("&Edit");
+	menu->addAction(searchAction);
 
 	// create options menu
-	QMenu* optionMenu = menu->addMenu("&Option");
-	optionMenu->addAction(showNameAction);
-	optionMenu->addAction(showRangeAction);
-	optionMenu->addAction(showDataAction);
-	optionMenu->addSeparator();
-	optionMenu->addActions(optGroup->actions());
-	optionMenu->addSeparator();
-	optionMenu->addAction(showDebugAction);
+	menu = menuBar()->addMenu("&Option");
+	menu->addAction(showNameAction);
+	menu->addSeparator();
+	menu->addActions(optGroup->actions());
+	menu->addSeparator();
+	menu->addAction(showDebugAction);
 
 	// create help menu
-	menu->addSeparator();
-	QMenu* helpMenu = menu->addMenu("&Help");
-	helpMenu->addAction(showIntroAction);
-	helpMenu->addAction(showAboutAction);
+	menu = menuBar()->addMenu("&Help");
+	menu->addAction(showIntroAction);
+	menu->addAction(showAboutAction);
+
+	connect (helpText, SIGNAL (anchorClicked (const QUrl &)),
+		 helpText, SLOT (clicked (const QUrl &)) );
 
 	connect(configList, SIGNAL(menuChanged(struct menu *)),
 		helpText, SLOT(setInfo(struct menu *)));
 	connect(configList, SIGNAL(menuSelected(struct menu *)),
 		SLOT(changeMenu(struct menu *)));
+	connect(configList, SIGNAL(itemSelected(struct menu *)),
+		SLOT(changeItens(struct menu *)));
 	connect(configList, SIGNAL(parentSelected()),
 		SLOT(goBack()));
 	connect(menuList, SIGNAL(menuChanged(struct menu *)),
@@ -1540,7 +1529,7 @@
 	free(configname);
 	configname = xstrdup(name);
 
-	ConfigView::updateListAll();
+	ConfigList::updateListAllForAll();
 }
 
 bool ConfigMainWindow::saveConfig(void)
@@ -1579,17 +1568,18 @@
 void ConfigMainWindow::searchConfig(void)
 {
 	if (!searchWindow)
-		searchWindow = new ConfigSearchWindow(this, "search");
+		searchWindow = new ConfigSearchWindow(this);
 	searchWindow->show();
 }
 
+void ConfigMainWindow::changeItens(struct menu *menu)
+{
+	configList->setRootMenu(menu);
+}
+
 void ConfigMainWindow::changeMenu(struct menu *menu)
 {
-	configList->setRootMenu(menu);
-	if (configList->rootEntry->parent == &rootmenu)
-		backAction->setEnabled(false);
-	else
-		backAction->setEnabled(true);
+	menuList->setRootMenu(menu);
 }
 
 void ConfigMainWindow::setMenuLink(struct menu *menu)
@@ -1609,22 +1599,26 @@
 			return;
 		list->setRootMenu(parent);
 		break;
-	case symbolMode:
+	case menuMode:
 		if (menu->flags & MENU_ROOT) {
-			configList->setRootMenu(menu);
+			menuList->setRootMenu(menu);
 			configList->clearSelection();
-			list = menuList;
-		} else {
 			list = configList;
+		} else {
 			parent = menu_get_parent_menu(menu->parent);
 			if (!parent)
 				return;
-			item = menuList->findConfigItem(parent);
+
+			/* Select the config view */
+			item = configList->findConfigItem(parent);
 			if (item) {
-				item->setSelected(true);
-				menuList->scrollToItem(item);
+				configList->setSelected(item, true);
+				configList->scrollToItem(item);
 			}
-			list->setRootMenu(parent);
+
+			menuList->setRootMenu(parent);
+			menuList->clearSelection();
+			list = menuList;
 		}
 		break;
 	case fullMode:
@@ -1637,9 +1631,10 @@
 	if (list) {
 		item = list->findConfigItem(menu);
 		if (item) {
-			item->setSelected(true);
+			list->setSelected(item, true);
 			list->scrollToItem(item);
 			list->setFocus();
+			helpText->setInfo(menu);
 		}
 	}
 }
@@ -1652,25 +1647,10 @@
 
 void ConfigMainWindow::goBack(void)
 {
-	ConfigItem* item, *oldSelection;
-
-	configList->setParentMenu();
 	if (configList->rootEntry == &rootmenu)
-		backAction->setEnabled(false);
-
-	if (menuList->selectedItems().count() == 0)
 		return;
 
-	item = (ConfigItem*)menuList->selectedItems().first();
-	oldSelection = item;
-	while (item) {
-		if (item->menu == configList->rootEntry) {
-			oldSelection->setSelected(false);
-			item->setSelected(true);
-			break;
-		}
-		item = (ConfigItem*)item->parent();
-	}
+	configList->setParentMenu();
 }
 
 void ConfigMainWindow::showSingleView(void)
@@ -1682,7 +1662,9 @@
 	fullViewAction->setEnabled(true);
 	fullViewAction->setChecked(false);
 
-	menuView->hide();
+	backAction->setEnabled(true);
+
+	menuList->hide();
 	menuList->setRootMenu(0);
 	configList->mode = singleMode;
 	if (configList->rootEntry == &rootmenu)
@@ -1701,17 +1683,19 @@
 	fullViewAction->setEnabled(true);
 	fullViewAction->setChecked(false);
 
-	configList->mode = symbolMode;
+	backAction->setEnabled(false);
+
+	configList->mode = menuMode;
 	if (configList->rootEntry == &rootmenu)
 		configList->updateListAll();
 	else
 		configList->setRootMenu(&rootmenu);
 	configList->setAllOpen(true);
 	configApp->processEvents();
-	menuList->mode = menuMode;
+	menuList->mode = symbolMode;
 	menuList->setRootMenu(&rootmenu);
 	menuList->setAllOpen(true);
-	menuView->show();
+	menuList->show();
 	menuList->setFocus();
 }
 
@@ -1724,7 +1708,9 @@
 	fullViewAction->setEnabled(false);
 	fullViewAction->setChecked(true);
 
-	menuView->hide();
+	backAction->setEnabled(false);
+
+	menuList->hide();
 	menuList->setRootMenu(0);
 	configList->mode = fullMode;
 	if (configList->rootEntry == &rootmenu)
@@ -1736,7 +1722,6 @@
 
 /*
  * ask for saving configuration before quitting
- * TODO ask only when something changed
  */
 void ConfigMainWindow::closeEvent(QCloseEvent* e)
 {
@@ -1767,17 +1752,26 @@
 
 void ConfigMainWindow::showIntro(void)
 {
-	static const QString str = "Welcome to the qconf graphical configuration tool.\n\n"
-		"For each option, a blank box indicates the feature is disabled, a check\n"
-		"indicates it is enabled, and a dot indicates that it is to be compiled\n"
-		"as a module.  Clicking on the box will cycle through the three states.\n\n"
-		"If you do not see an option (e.g., a device driver) that you believe\n"
-		"should be present, try turning on Show All Options under the Options menu.\n"
-		"Although there is no cross reference yet to help you figure out what other\n"
-		"options must be enabled to support the option you are interested in, you can\n"
-		"still view the help of a grayed-out option.\n\n"
-		"Toggling Show Debug Info under the Options menu will show the dependencies,\n"
-		"which you can then match by examining other options.\n\n";
+	static const QString str =
+		"Welcome to the qconf graphical configuration tool.\n"
+		"\n"
+		"For bool and tristate options, a blank box indicates the "
+		"feature is disabled, a check indicates it is enabled, and a "
+		"dot indicates that it is to be compiled as a module. Clicking "
+		"on the box will cycle through the three states. For int, hex, "
+		"and string options, double-clicking or pressing F2 on the "
+		"Value cell will allow you to edit the value.\n"
+		"\n"
+		"If you do not see an option (e.g., a device driver) that you "
+		"believe should be present, try turning on Show All Options "
+		"under the Options menu. Enabling Show Debug Info will help you"
+		"figure out what other options must be enabled to support the "
+		"option you are interested in, and hyperlinks will navigate to "
+		"them.\n"
+		"\n"
+		"Toggling Show Debug Info under the Options menu will show the "
+		"dependencies, which you can then match by examining other "
+		"options.\n";
 
 	QMessageBox::information(this, "qconf", str);
 }
@@ -1857,7 +1851,6 @@
 	const char *name;
 
 	progname = av[0];
-	configApp = new QApplication(ac, av);
 	if (ac > 1 && av[1][0] == '-') {
 		switch (av[1][1]) {
 		case 's':
@@ -1878,6 +1871,8 @@
 	conf_read(NULL);
 	//zconfdump(stdout);
 
+	configApp = new QApplication(ac, av);
+
 	configSettings = new ConfigSettings();
 	configSettings->beginGroup("/kconfig/qconf");
 	v = new ConfigMainWindow();
diff --git a/scripts/kconfig/qconf.h b/scripts/kconfig/qconf.h
index 45bfe9b..78b0a1d 100644
--- a/scripts/kconfig/qconf.h
+++ b/scripts/kconfig/qconf.h
@@ -3,23 +3,22 @@
  * Copyright (C) 2002 Roman Zippel <zippel@linux-m68k.org>
  */
 
-#include <QTextBrowser>
-#include <QTreeWidget>
-#include <QMainWindow>
-#include <QHeaderView>
-#include <qsettings.h>
-#include <QPushButton>
-#include <QSettings>
-#include <QLineEdit>
-#include <QSplitter>
 #include <QCheckBox>
 #include <QDialog>
+#include <QHeaderView>
+#include <QLineEdit>
+#include <QMainWindow>
+#include <QPushButton>
+#include <QSettings>
+#include <QSplitter>
+#include <QStyledItemDelegate>
+#include <QTextBrowser>
+#include <QTreeWidget>
+
 #include "expr.h"
 
-class ConfigView;
 class ConfigList;
 class ConfigItem;
-class ConfigLineEdit;
 class ConfigMainWindow;
 
 class ConfigSettings : public QSettings {
@@ -30,7 +29,7 @@
 };
 
 enum colIdx {
-	promptColIdx, nameColIdx, noColIdx, modColIdx, yesColIdx, dataColIdx, colNr
+	promptColIdx, nameColIdx, dataColIdx
 };
 enum listMode {
 	singleMode, menuMode, symbolMode, fullMode, listMode
@@ -43,13 +42,16 @@
 	Q_OBJECT
 	typedef class QTreeWidget Parent;
 public:
-	ConfigList(ConfigView* p, const char *name = 0);
+	ConfigList(QWidget *parent, const char *name = 0);
+	~ConfigList();
 	void reinit(void);
-	ConfigView* parent(void) const
-	{
-		return (ConfigView*)Parent::parent();
-	}
 	ConfigItem* findConfigItem(struct menu *);
+	void setSelected(QTreeWidgetItem *item, bool enable) {
+		for (int i = 0; i < selectedItems().size(); i++)
+			selectedItems().at(i)->setSelected(false);
+
+		item->setSelected(enable);
+	}
 
 protected:
 	void keyPressEvent(QKeyEvent *e);
@@ -63,61 +65,52 @@
 public slots:
 	void setRootMenu(struct menu *menu);
 
-	void updateList(ConfigItem *item);
+	void updateList();
 	void setValue(ConfigItem* item, tristate val);
 	void changeValue(ConfigItem* item);
 	void updateSelection(void);
 	void saveSettings(void);
+	void setOptionMode(QAction *action);
+	void setShowName(bool on);
+
 signals:
 	void menuChanged(struct menu *menu);
 	void menuSelected(struct menu *menu);
+	void itemSelected(struct menu *menu);
 	void parentSelected(void);
 	void gotFocus(struct menu *);
+	void showNameChanged(bool on);
 
 public:
 	void updateListAll(void)
 	{
 		updateAll = true;
-		updateList(NULL);
+		updateList();
 		updateAll = false;
 	}
-	ConfigList* listView()
-	{
-		return this;
-	}
-	ConfigItem* firstChild() const
-	{
-		return (ConfigItem *)children().first();
-	}
-	void addColumn(colIdx idx)
-	{
-		showColumn(idx);
-	}
-	void removeColumn(colIdx idx)
-	{
-		hideColumn(idx);
-	}
 	void setAllOpen(bool open);
 	void setParentMenu(void);
 
 	bool menuSkip(struct menu *);
 
 	void updateMenuList(ConfigItem *parent, struct menu*);
-	void updateMenuList(ConfigList *parent, struct menu*);
+	void updateMenuList(struct menu *menu);
 
 	bool updateAll;
 
-	QPixmap symbolYesPix, symbolModPix, symbolNoPix;
-	QPixmap choiceYesPix, choiceNoPix;
-	QPixmap menuPix, menuInvPix, menuBackPix, voidPix;
-
-	bool showName, showRange, showData;
+	bool showName;
 	enum listMode mode;
 	enum optionMode optMode;
 	struct menu *rootEntry;
 	QPalette disabledColorGroup;
 	QPalette inactivedColorGroup;
 	QMenu* headerPopup;
+
+	static QList<ConfigList *> allLists;
+	static void updateListForAll();
+	static void updateListAllForAll();
+
+	static QAction *showNormalAction, *showAllAction, *showPromptAction;
 };
 
 class ConfigItem : public QTreeWidgetItem {
@@ -140,7 +133,6 @@
 	}
 	~ConfigItem(void);
 	void init(void);
-	void okRename(int col);
 	void updateMenu(void);
 	void testUpdateMenu(bool v);
 	ConfigList* listView() const
@@ -165,82 +157,36 @@
 
 		return ret;
 	}
-	void setText(colIdx idx, const QString& text)
-	{
-		Parent::setText(idx, text);
-	}
-	QString text(colIdx idx) const
-	{
-		return Parent::text(idx);
-	}
-	void setPixmap(colIdx idx, const QIcon &icon)
-	{
-		Parent::setIcon(idx, icon);
-	}
-	const QIcon pixmap(colIdx idx) const
-	{
-		return icon(idx);
-	}
 	// TODO: Implement paintCell
 
 	ConfigItem* nextItem;
 	struct menu *menu;
 	bool visible;
 	bool goParent;
+
+	static QIcon symbolYesIcon, symbolModIcon, symbolNoIcon;
+	static QIcon choiceYesIcon, choiceNoIcon;
+	static QIcon menuIcon, menubackIcon;
 };
 
-class ConfigLineEdit : public QLineEdit {
-	Q_OBJECT
-	typedef class QLineEdit Parent;
+class ConfigItemDelegate : public QStyledItemDelegate
+{
+private:
+	struct menu *menu;
 public:
-	ConfigLineEdit(ConfigView* parent);
-	ConfigView* parent(void) const
-	{
-		return (ConfigView*)Parent::parent();
-	}
-	void show(ConfigItem *i);
-	void keyPressEvent(QKeyEvent *e);
-
-public:
-	ConfigItem *item;
-};
-
-class ConfigView : public QWidget {
-	Q_OBJECT
-	typedef class QWidget Parent;
-public:
-	ConfigView(QWidget* parent, const char *name = 0);
-	~ConfigView(void);
-	static void updateList(ConfigItem* item);
-	static void updateListAll(void);
-
-	bool showName(void) const { return list->showName; }
-	bool showRange(void) const { return list->showRange; }
-	bool showData(void) const { return list->showData; }
-public slots:
-	void setShowName(bool);
-	void setShowRange(bool);
-	void setShowData(bool);
-	void setOptionMode(QAction *);
-signals:
-	void showNameChanged(bool);
-	void showRangeChanged(bool);
-	void showDataChanged(bool);
-public:
-	ConfigList* list;
-	ConfigLineEdit* lineEdit;
-
-	static ConfigView* viewList;
-	ConfigView* nextView;
-
-	static QAction *showNormalAction;
-	static QAction *showAllAction;
-	static QAction *showPromptAction;
+	ConfigItemDelegate(QObject *parent = nullptr)
+		: QStyledItemDelegate(parent) {}
+	QWidget *createEditor(QWidget *parent,
+			      const QStyleOptionViewItem &option,
+			      const QModelIndex &index) const override;
+	void setModelData(QWidget *editor, QAbstractItemModel *model,
+			  const QModelIndex &index) const override;
 };
 
 class ConfigInfoView : public QTextBrowser {
 	Q_OBJECT
 	typedef class QTextBrowser Parent;
+	QMenu *contextMenu;
 public:
 	ConfigInfoView(QWidget* parent, const char *name = 0);
 	bool showDebug(void) const { return _showDebug; }
@@ -249,6 +195,7 @@
 	void setInfo(struct menu *menu);
 	void saveSettings(void);
 	void setShowDebug(bool);
+	void clicked (const QUrl &url);
 
 signals:
 	void showDebugChanged(bool);
@@ -260,8 +207,7 @@
 	QString debug_info(struct symbol *sym);
 	static QString print_filter(const QString &str);
 	static void expr_print_help(void *data, struct symbol *sym, const char *str);
-	QMenu *createStandardContextMenu(const QPoint & pos);
-	void contextMenuEvent(QContextMenuEvent *e);
+	void contextMenuEvent(QContextMenuEvent *event);
 
 	struct symbol *sym;
 	struct menu *_menu;
@@ -272,7 +218,7 @@
 	Q_OBJECT
 	typedef class QDialog Parent;
 public:
-	ConfigSearchWindow(ConfigMainWindow* parent, const char *name = 0);
+	ConfigSearchWindow(ConfigMainWindow *parent);
 
 public slots:
 	void saveSettings(void);
@@ -282,7 +228,7 @@
 	QLineEdit* editField;
 	QPushButton* searchButton;
 	QSplitter* split;
-	ConfigView* list;
+	ConfigList *list;
 	ConfigInfoView* info;
 
 	struct symbol **result;
@@ -298,6 +244,7 @@
 	ConfigMainWindow(void);
 public slots:
 	void changeMenu(struct menu *);
+	void changeItens(struct menu *);
 	void setMenuLink(struct menu *);
 	void listFocusChanged(void);
 	void goBack(void);
@@ -316,12 +263,9 @@
 	void closeEvent(QCloseEvent *e);
 
 	ConfigSearchWindow *searchWindow;
-	ConfigView *menuView;
 	ConfigList *menuList;
-	ConfigView *configView;
 	ConfigList *configList;
 	ConfigInfoView *helpText;
-	QToolBar *toolBar;
 	QAction *backAction;
 	QAction *singleViewAction;
 	QAction *splitViewAction;
diff --git a/scripts/kconfig/streamline_config.pl b/scripts/kconfig/streamline_config.pl
index 08d76d7..1c78ba4 100755
--- a/scripts/kconfig/streamline_config.pl
+++ b/scripts/kconfig/streamline_config.pl
@@ -56,8 +56,6 @@
     print STDERR @_;
 }
 
-my $config = ".config";
-
 my $uname = `uname -r`;
 chomp $uname;
 
@@ -145,6 +143,7 @@
 my %selects;
 my %prompts;
 my %objects;
+my %config2kfile;
 my $var;
 my $iflevel = 0;
 my @ifdeps;
@@ -203,6 +202,7 @@
 	if (/^\s*(menu)?config\s+(\S+)\s*$/) {
 	    $state = "NEW";
 	    $config = $2;
+	    $config2kfile{"CONFIG_$config"} = $kconfig;
 
 	    # Add depends for 'if' nesting
 	    for (my $i = 0; $i < $iflevel; $i++) {
@@ -374,7 +374,7 @@
 	    $lsmod = "$dir/lsmod";
 	    last;
 	}
-}
+    }
     if (!defined($lsmod)) {
 	# try just the path
 	$lsmod = "lsmod";
@@ -593,6 +593,23 @@
 }
 
 my %setconfigs;
+my @preserved_kconfigs;
+if (defined($ENV{'LMC_KEEP'})) {
+	@preserved_kconfigs = split(/:/,$ENV{LMC_KEEP});
+}
+
+sub in_preserved_kconfigs {
+    my $kconfig = $config2kfile{$_[0]};
+    if (!defined($kconfig)) {
+        return 0;
+    }
+    foreach my $excl (@preserved_kconfigs) {
+        if($kconfig =~ /^$excl/) {
+            return 1;
+        }
+    }
+    return 0;
+}
 
 # Finally, read the .config file and turn off any module enabled that
 # we could not find a reason to keep enabled.
@@ -646,6 +663,11 @@
     }
 
     if (/^(CONFIG.*)=(m|y)/) {
+        if (in_preserved_kconfigs($1)) {
+            dprint "Preserve config $1";
+            print;
+            next;
+        }
 	if (defined($configs{$1})) {
 	    if ($localyesconfig) {
 	        $setconfigs{$1} = 'y';
diff --git a/scripts/kconfig/symbol.c b/scripts/kconfig/symbol.c
index f56eec5..ffa3ec6 100644
--- a/scripts/kconfig/symbol.c
+++ b/scripts/kconfig/symbol.c
@@ -15,15 +15,21 @@
 	.name = "y",
 	.curr = { "y", yes },
 	.flags = SYMBOL_CONST|SYMBOL_VALID,
-}, symbol_mod = {
+};
+
+struct symbol symbol_mod = {
 	.name = "m",
 	.curr = { "m", mod },
 	.flags = SYMBOL_CONST|SYMBOL_VALID,
-}, symbol_no = {
+};
+
+struct symbol symbol_no = {
 	.name = "n",
 	.curr = { "n", no },
 	.flags = SYMBOL_CONST|SYMBOL_VALID,
-}, symbol_empty = {
+};
+
+static struct symbol symbol_empty = {
 	.name = "",
 	.curr = { "", no },
 	.flags = SYMBOL_VALID,
@@ -31,7 +37,7 @@
 
 struct symbol *sym_defconfig_list;
 struct symbol *modules_sym;
-tristate modules_val;
+static tristate modules_val;
 
 enum symbol_type sym_get_type(struct symbol *sym)
 {
@@ -221,7 +227,7 @@
 		sym_set_changed(sym);
 	}
 	tri = no;
-	if (sym->implied.expr && sym->dir_dep.tri != no)
+	if (sym->implied.expr)
 		tri = expr_calc_value(sym->implied.expr);
 	if (tri == mod && sym_get_type(sym) == S_BOOLEAN)
 		tri = yes;
@@ -394,6 +400,8 @@
 				if (sym->implied.tri != no) {
 					sym->flags |= SYMBOL_WRITE;
 					newval.tri = EXPR_OR(newval.tri, sym->implied.tri);
+					newval.tri = EXPR_AND(newval.tri,
+							      sym->dir_dep.tri);
 				}
 			}
 		calc_newval:
@@ -401,8 +409,7 @@
 				sym_warn_unmet_dep(sym);
 			newval.tri = EXPR_OR(newval.tri, sym->rev_dep.tri);
 		}
-		if (newval.tri == mod &&
-		    (sym_get_type(sym) == S_BOOLEAN || sym->implied.tri == yes))
+		if (newval.tri == mod && sym_get_type(sym) == S_BOOLEAN)
 			newval.tri = yes;
 		break;
 	case S_STRING:
@@ -484,8 +491,6 @@
 		return false;
 	if (sym->visible <= sym->rev_dep.tri)
 		return false;
-	if (sym->implied.tri == yes && val == mod)
-		return false;
 	if (sym_is_choice_value(sym) && sym->visible == yes)
 		return val == yes;
 	return val >= sym->rev_dep.tri && val <= sym->visible;
@@ -832,7 +837,7 @@
 	memset(symbol, 0, sizeof(*symbol));
 	symbol->name = new_name;
 	symbol->type = S_UNKNOWN;
-	symbol->flags |= flags;
+	symbol->flags = flags;
 
 	symbol->next = symbol_hash[hash];
 	symbol_hash[hash] = symbol;
@@ -1273,28 +1278,6 @@
 	return sym2;
 }
 
-struct property *prop_alloc(enum prop_type type, struct symbol *sym)
-{
-	struct property *prop;
-	struct property **propp;
-
-	prop = xmalloc(sizeof(*prop));
-	memset(prop, 0, sizeof(*prop));
-	prop->type = type;
-	prop->sym = sym;
-	prop->file = current_file;
-	prop->lineno = zconf_lineno();
-
-	/* append property to the prop list of symbol */
-	if (sym) {
-		for (propp = &sym->prop; *propp; propp = &(*propp)->next)
-			;
-		*propp = prop;
-	}
-
-	return prop;
-}
-
 struct symbol *prop_get_symbol(struct property *prop)
 {
 	if (prop->expr && (prop->expr->type == E_SYMBOL ||
diff --git a/scripts/kconfig/tests/rand_nested_choice/Kconfig b/scripts/kconfig/tests/rand_nested_choice/Kconfig
deleted file mode 100644
index 8350de7..0000000
--- a/scripts/kconfig/tests/rand_nested_choice/Kconfig
+++ /dev/null
@@ -1,35 +0,0 @@
-# SPDX-License-Identifier: GPL-2.0
-
-choice
-	prompt "choice"
-
-config A
-	bool "A"
-
-config B
-	bool "B"
-
-if B
-choice
-	prompt "sub choice"
-
-config C
-	bool "C"
-
-config D
-	bool "D"
-
-if D
-choice
-	prompt "subsub choice"
-
-config E
-	bool "E"
-
-endchoice
-endif # D
-
-endchoice
-endif # B
-
-endchoice
diff --git a/scripts/kconfig/tests/rand_nested_choice/__init__.py b/scripts/kconfig/tests/rand_nested_choice/__init__.py
deleted file mode 100644
index 9e4b2db..0000000
--- a/scripts/kconfig/tests/rand_nested_choice/__init__.py
+++ /dev/null
@@ -1,17 +0,0 @@
-# SPDX-License-Identifier: GPL-2.0
-"""
-Set random values recursively in nested choices.
-
-Kconfig can create a choice-in-choice structure by using 'if' statement.
-randconfig should correctly set random choice values.
-
-Related Linux commit: 3b9a19e08960e5cdad5253998637653e592a3c29
-"""
-
-
-def test(conf):
-    for i in range(20):
-        assert conf.randconfig() == 0
-        assert (conf.config_contains('expected_stdout0') or
-                conf.config_contains('expected_stdout1') or
-                conf.config_contains('expected_stdout2'))
diff --git a/scripts/kconfig/tests/rand_nested_choice/expected_stdout0 b/scripts/kconfig/tests/rand_nested_choice/expected_stdout0
deleted file mode 100644
index 05450f3..0000000
--- a/scripts/kconfig/tests/rand_nested_choice/expected_stdout0
+++ /dev/null
@@ -1,2 +0,0 @@
-CONFIG_A=y
-# CONFIG_B is not set
diff --git a/scripts/kconfig/tests/rand_nested_choice/expected_stdout1 b/scripts/kconfig/tests/rand_nested_choice/expected_stdout1
deleted file mode 100644
index 37ab295..0000000
--- a/scripts/kconfig/tests/rand_nested_choice/expected_stdout1
+++ /dev/null
@@ -1,4 +0,0 @@
-# CONFIG_A is not set
-CONFIG_B=y
-CONFIG_C=y
-# CONFIG_D is not set
diff --git a/scripts/kconfig/tests/rand_nested_choice/expected_stdout2 b/scripts/kconfig/tests/rand_nested_choice/expected_stdout2
deleted file mode 100644
index 849ff47..0000000
--- a/scripts/kconfig/tests/rand_nested_choice/expected_stdout2
+++ /dev/null
@@ -1,5 +0,0 @@
-# CONFIG_A is not set
-CONFIG_B=y
-# CONFIG_C is not set
-CONFIG_D=y
-CONFIG_E=y
diff --git a/scripts/kernel-doc b/scripts/kernel-doc
index 81dc917..6325bec 100755
--- a/scripts/kernel-doc
+++ b/scripts/kernel-doc
@@ -56,6 +56,13 @@
   -rst			Output reStructuredText format.
   -none			Do not output documentation, only warnings.
 
+Output format selection modifier (affects only ReST output):
+
+  -sphinx-version	Use the ReST C domain dialect compatible with an
+			specific Sphinx Version.
+			If not specified, kernel-doc will auto-detect using
+			the sphinx-build version found on PATH.
+
 Output selection (mutually exclusive):
   -export		Only output documentation for symbols that have been
 			exported using EXPORT_SYMBOL() or EXPORT_SYMBOL_GPL()
@@ -66,9 +73,8 @@
   -function NAME	Only output documentation for the given function(s)
 			or DOC: section title(s). All other functions and DOC:
 			sections are ignored. May be specified multiple times.
-  -nofunction NAME	Do NOT output documentation for the given function(s);
-			only output documentation for the other functions and
-			DOC: sections. May be specified multiple times.
+  -nosymbol NAME	Exclude the specified symbols from the output
+		        documentation. May be specified multiple times.
 
 Output selection modifiers:
   -no-doc-sections	Do not output DOC: sections.
@@ -81,6 +87,7 @@
 Other parameters:
   -v			Verbose output, more warnings and other information.
   -h			Print this help.
+  -Werror		Treat warnings as errors.
 
 EOF
     print $message;
@@ -213,7 +220,9 @@
 my $type_constant2 = '\%([-_\w]+)';
 my $type_func = '(\w+)\(\)';
 my $type_param = '\@(\w*((\.\w+)|(->\w+))*(\.\.\.)?)';
+my $type_param_ref = '([\!]?)\@(\w*((\.\w+)|(->\w+))*(\.\.\.)?)';
 my $type_fp_param = '\@(\w+)\(\)';  # Special RST handling for func ptr params
+my $type_fp_param2 = '\@(\w+->\S+)\(\)';  # Special RST handling for structs with func ptr params
 my $type_env = '(\$\w+)';
 my $type_enum = '\&(enum\s*([_\w]+))';
 my $type_struct = '\&(struct\s*([_\w]+))';
@@ -236,6 +245,7 @@
                       [$type_typedef, "\\\\fI\$1\\\\fP"],
                       [$type_union, "\\\\fI\$1\\\\fP"],
                       [$type_param, "\\\\fI\$1\\\\fP"],
+                      [$type_param_ref, "\\\\fI\$1\$2\\\\fP"],
                       [$type_member, "\\\\fI\$1\$2\$3\\\\fP"],
                       [$type_fallback, "\\\\fI\$1\\\\fP"]
 		     );
@@ -249,6 +259,7 @@
                        [$type_member_func, "\\:c\\:type\\:`\$1\$2\$3\\\\(\\\\) <\$1>`"],
                        [$type_member, "\\:c\\:type\\:`\$1\$2\$3 <\$1>`"],
 		       [$type_fp_param, "**\$1\\\\(\\\\)**"],
+		       [$type_fp_param2, "**\$1\\\\(\\\\)**"],
                        [$type_func, "\$1()"],
                        [$type_enum, "\\:c\\:type\\:`\$1 <\$2>`"],
                        [$type_struct, "\\:c\\:type\\:`\$1 <\$2>`"],
@@ -256,7 +267,7 @@
                        [$type_union, "\\:c\\:type\\:`\$1 <\$2>`"],
                        # in rst this can refer to any type
                        [$type_fallback, "\\:c\\:type\\:`\$1`"],
-                       [$type_param, "**\$1**"]
+                       [$type_param_ref, "**\$1\$2**"]
 		      );
 my $blankline_rst = "\n";
 
@@ -266,9 +277,12 @@
 }
 
 my $kernelversion;
+my ($sphinx_major, $sphinx_minor, $sphinx_patch);
+
 my $dohighlight = "";
 
 my $verbose = 0;
+my $Werror = 0;
 my $output_mode = "rst";
 my $output_preformatted = 0;
 my $no_doc_sections = 0;
@@ -280,9 +294,8 @@
 use constant {
     OUTPUT_ALL          => 0, # output all symbols and doc sections
     OUTPUT_INCLUDE      => 1, # output only specified symbols
-    OUTPUT_EXCLUDE      => 2, # output everything except specified symbols
-    OUTPUT_EXPORTED     => 3, # output exported symbols
-    OUTPUT_INTERNAL     => 4, # output non-exported symbols
+    OUTPUT_EXPORTED     => 2, # output exported symbols
+    OUTPUT_INTERNAL     => 3, # output non-exported symbols
 };
 my $output_selection = OUTPUT_ALL;
 my $show_not_found = 0;	# No longer used
@@ -307,6 +320,7 @@
 # CAVEAT EMPTOR!  Some of the others I localised may not want to be, which
 # could cause "use of undefined value" or other bugs.
 my ($function, %function_table, %parametertypes, $declaration_purpose);
+my %nosymbol_table = ();
 my $declaration_start_line;
 my ($type, $declaration_name, $return_type);
 my ($newsection, $newcontents, $prototype, $brcount, %source_map);
@@ -315,9 +329,21 @@
 	$verbose = "$ENV{'KBUILD_VERBOSE'}";
 }
 
+if (defined($ENV{'KDOC_WERROR'})) {
+	$Werror = "$ENV{'KDOC_WERROR'}";
+}
+
+if (defined($ENV{'KCFLAGS'})) {
+	my $kcflags = "$ENV{'KCFLAGS'}";
+
+	if ($kcflags =~ /Werror/) {
+		$Werror = 1;
+	}
+}
+
 # Generated docbook code is inserted in a template at a point where
 # docbook v3.1 requires a non-zero sequence of RefEntry's; see:
-# http://www.oasis-open.org/docbook/documentation/reference/html/refentry.html
+# https://www.oasis-open.org/docbook/documentation/reference/html/refentry.html
 # We keep track of number of generated entries and generate a dummy
 # if needs be to ensure the expanded template can be postprocessed
 # into html.
@@ -327,13 +353,14 @@
 
 # Parser states
 use constant {
-    STATE_NORMAL        => 0, # normal code
-    STATE_NAME          => 1, # looking for function name
-    STATE_BODY_MAYBE    => 2, # body - or maybe more description
-    STATE_BODY          => 3, # the body of the comment
-    STATE_PROTO         => 4, # scanning prototype
-    STATE_DOCBLOCK      => 5, # documentation block
-    STATE_INLINE        => 6, # gathering documentation outside main block
+    STATE_NORMAL        => 0,        # normal code
+    STATE_NAME          => 1,        # looking for function name
+    STATE_BODY_MAYBE    => 2,        # body - or maybe more description
+    STATE_BODY          => 3,        # the body of the comment
+    STATE_BODY_WITH_BLANK_LINE => 4, # the body, which has a blank line
+    STATE_PROTO         => 5,        # scanning prototype
+    STATE_DOCBLOCK      => 6,        # documentation block
+    STATE_INLINE        => 7,        # gathering doc outside main block
 };
 my $state;
 my $in_doc_sect;
@@ -413,10 +440,9 @@
 	$output_selection = OUTPUT_INCLUDE;
 	$function = shift @ARGV;
 	$function_table{$function} = 1;
-    } elsif ($cmd eq "nofunction") { # output all except specific functions
-	$output_selection = OUTPUT_EXCLUDE;
-	$function = shift @ARGV;
-	$function_table{$function} = 1;
+    } elsif ($cmd eq "nosymbol") { # Exclude specific symbols
+	my $symbol = shift @ARGV;
+	$nosymbol_table{$symbol} = 1;
     } elsif ($cmd eq "export") { # only exported symbols
 	$output_selection = OUTPUT_EXPORTED;
 	%function_table = ();
@@ -428,6 +454,8 @@
 	push(@export_file_list, $file);
     } elsif ($cmd eq "v") {
 	$verbose = 1;
+    } elsif ($cmd eq "Werror") {
+	$Werror = 1;
     } elsif (($cmd eq "h") || ($cmd eq "help")) {
 	usage();
     } elsif ($cmd eq 'no-doc-sections') {
@@ -436,6 +464,23 @@
 	    $enable_lineno = 1;
     } elsif ($cmd eq 'show-not-found') {
 	$show_not_found = 1;  # A no-op but don't fail
+    } elsif ($cmd eq "sphinx-version") {
+	my $ver_string = shift @ARGV;
+	if ($ver_string =~ m/^(\d+)(\.\d+)?(\.\d+)?/) {
+	    $sphinx_major = $1;
+	    if (defined($2)) {
+		$sphinx_minor = substr($2,1);
+	    } else {
+		$sphinx_minor = 0;
+	    }
+	    if (defined($3)) {
+		$sphinx_patch = substr($3,1)
+	    } else {
+		$sphinx_patch = 0;
+	    }
+	} else {
+	    die "Sphinx version should either major.minor or major.minor.patch format\n";
+	}
     } else {
 	# Unknown argument
         usage();
@@ -444,6 +489,51 @@
 
 # continue execution near EOF;
 
+# The C domain dialect changed on Sphinx 3. So, we need to check the
+# version in order to produce the right tags.
+sub findprog($)
+{
+	foreach(split(/:/, $ENV{PATH})) {
+		return "$_/$_[0]" if(-x "$_/$_[0]");
+	}
+}
+
+sub get_sphinx_version()
+{
+	my $ver;
+
+	my $cmd = "sphinx-build";
+	if (!findprog($cmd)) {
+		my $cmd = "sphinx-build3";
+		if (!findprog($cmd)) {
+			$sphinx_major = 1;
+			$sphinx_minor = 2;
+			$sphinx_patch = 0;
+			printf STDERR "Warning: Sphinx version not found. Using default (Sphinx version %d.%d.%d)\n",
+			       $sphinx_major, $sphinx_minor, $sphinx_patch;
+			return;
+		}
+	}
+
+	open IN, "$cmd --version 2>&1 |";
+	while (<IN>) {
+		if (m/^\s*sphinx-build\s+([\d]+)\.([\d\.]+)(\+\/[\da-f]+)?$/) {
+			$sphinx_major = $1;
+			$sphinx_minor = $2;
+			$sphinx_patch = $3;
+			last;
+		}
+		# Sphinx 1.2.x uses a different format
+		if (m/^\s*Sphinx.*\s+([\d]+)\.([\d\.]+)$/) {
+			$sphinx_major = $1;
+			$sphinx_minor = $2;
+			$sphinx_patch = $3;
+			last;
+		}
+	}
+	close IN;
+}
+
 # get kernel version from env
 sub get_kernel_version() {
     my $version = 'unknown kernel version';
@@ -510,11 +600,11 @@
         return;
     }
 
+    return if (defined($nosymbol_table{$name}));
+
     if (($output_selection == OUTPUT_ALL) ||
-	($output_selection == OUTPUT_INCLUDE &&
-	 defined($function_table{$name})) ||
-	($output_selection == OUTPUT_EXCLUDE &&
-	 !defined($function_table{$name})))
+	(($output_selection == OUTPUT_INCLUDE) &&
+	 defined($function_table{$name})))
     {
 	dump_section($file, $name, $contents);
 	output_blockhead({'sectionlist' => \@sectionlist,
@@ -597,10 +687,10 @@
 	$type = $args{'parametertypes'}{$parameter};
 	if ($type =~ m/([^\(]*\(\*)\s*\)\s*\(([^\)]*)\)/) {
 	    # pointer-to-function
-	    print ".BI \"" . $parenth . $1 . "\" " . $parameter . " \") (" . $2 . ")" . $post . "\"\n";
+	    print ".BI \"" . $parenth . $1 . "\" " . " \") (" . $2 . ")" . $post . "\"\n";
 	} else {
 	    $type =~ s/([^\*])$/$1 /;
-	    print ".BI \"" . $parenth . $type . "\" " . $parameter . " \"" . $post . "\"\n";
+	    print ".BI \"" . $parenth . $type . "\" " . " \"" . $post . "\"\n";
 	}
 	$count++;
 	$parenth = "";
@@ -740,6 +830,8 @@
     my ($parameter, $section);
 
     foreach $section (@{$args{'sectionlist'}}) {
+	next if (defined($nosymbol_table{$section}));
+
 	if ($output_selection != OUTPUT_INCLUDE) {
 	    print "**$section**\n\n";
 	}
@@ -825,16 +917,37 @@
     my ($parameter, $section);
     my $oldprefix = $lineprefix;
     my $start = "";
+    my $is_macro = 0;
 
-    if ($args{'typedef'}) {
-	print ".. c:type:: ". $args{'function'} . "\n\n";
-	print_lineno($declaration_start_line);
-	print "   **Typedef**: ";
-	$lineprefix = "";
-	output_highlight_rst($args{'purpose'});
-	$start = "\n\n**Syntax**\n\n  ``";
+    if ($sphinx_major < 3) {
+	if ($args{'typedef'}) {
+	    print ".. c:type:: ". $args{'function'} . "\n\n";
+	    print_lineno($declaration_start_line);
+	    print "   **Typedef**: ";
+	    $lineprefix = "";
+	    output_highlight_rst($args{'purpose'});
+	    $start = "\n\n**Syntax**\n\n  ``";
+	    $is_macro = 1;
+	} else {
+	    print ".. c:function:: ";
+	}
     } else {
-	print ".. c:function:: ";
+	if ($args{'typedef'} || $args{'functiontype'} eq "") {
+	    $is_macro = 1;
+	    print ".. c:macro:: ". $args{'function'} . "\n\n";
+	} else {
+	    print ".. c:function:: ";
+	}
+
+	if ($args{'typedef'}) {
+	    print_lineno($declaration_start_line);
+	    print "   **Typedef**: ";
+	    $lineprefix = "";
+	    output_highlight_rst($args{'purpose'});
+	    $start = "\n\n**Syntax**\n\n  ``";
+	} else {
+	    print "``" if ($is_macro);
+	}
     }
     if ($args{'functiontype'} ne "") {
 	$start .= $args{'functiontype'} . " " . $args{'function'} . " (";
@@ -853,15 +966,17 @@
 
 	if ($type =~ m/([^\(]*\(\*)\s*\)\s*\(([^\)]*)\)/) {
 	    # pointer-to-function
-	    print $1 . $parameter . ") (" . $2;
+	    print $1 . $parameter . ") (" . $2 . ")";
 	} else {
-	    print $type . " " . $parameter;
+	    print $type;
 	}
     }
-    if ($args{'typedef'}) {
-	print ");``\n\n";
+    if ($is_macro) {
+	print ")``\n\n";
     } else {
 	print ")\n\n";
+    }
+    if (!$args{'typedef'}) {
 	print_lineno($declaration_start_line);
 	$lineprefix = "   ";
 	output_highlight_rst($args{'purpose'});
@@ -876,7 +991,7 @@
 	$type = $args{'parametertypes'}{$parameter};
 
 	if ($type ne "") {
-	    print "``$type $parameter``\n";
+	    print "``$type``\n";
 	} else {
 	    print "``$parameter``\n";
 	}
@@ -917,9 +1032,14 @@
     my ($parameter);
     my $oldprefix = $lineprefix;
     my $count;
-    my $name = "enum " . $args{'enum'};
 
-    print "\n\n.. c:type:: " . $name . "\n\n";
+    if ($sphinx_major < 3) {
+	my $name = "enum " . $args{'enum'};
+	print "\n\n.. c:type:: " . $name . "\n\n";
+    } else {
+	my $name = $args{'enum'};
+	print "\n\n.. c:enum:: " . $name . "\n\n";
+    }
     print_lineno($declaration_start_line);
     $lineprefix = "   ";
     output_highlight_rst($args{'purpose'});
@@ -945,8 +1065,13 @@
     my %args = %{$_[0]};
     my ($parameter);
     my $oldprefix = $lineprefix;
-    my $name = "typedef " . $args{'typedef'};
+    my $name;
 
+    if ($sphinx_major < 3) {
+	$name = "typedef " . $args{'typedef'};
+    } else {
+	$name = $args{'typedef'};
+    }
     print "\n\n.. c:type:: " . $name . "\n\n";
     print_lineno($declaration_start_line);
     $lineprefix = "   ";
@@ -961,9 +1086,18 @@
     my %args = %{$_[0]};
     my ($parameter);
     my $oldprefix = $lineprefix;
-    my $name = $args{'type'} . " " . $args{'struct'};
 
-    print "\n\n.. c:type:: " . $name . "\n\n";
+    if ($sphinx_major < 3) {
+	my $name = $args{'type'} . " " . $args{'struct'};
+	print "\n\n.. c:type:: " . $name . "\n\n";
+    } else {
+	my $name = $args{'struct'};
+	if ($args{'type'} eq 'union') {
+	    print "\n\n.. c:union:: " . $name . "\n\n";
+	} else {
+	    print "\n\n.. c:struct:: " . $name . "\n\n";
+	}
+    }
     print_lineno($declaration_start_line);
     $lineprefix = "   ";
     output_highlight_rst($args{'purpose'});
@@ -1022,12 +1156,14 @@
     my $name = shift;
     my $functype = shift;
     my $func = "output_${functype}_$output_mode";
+
+    return if (defined($nosymbol_table{$name}));
+
     if (($output_selection == OUTPUT_ALL) ||
 	(($output_selection == OUTPUT_INCLUDE ||
 	  $output_selection == OUTPUT_EXPORTED) &&
 	 defined($function_table{$name})) ||
-	(($output_selection == OUTPUT_EXCLUDE ||
-	  $output_selection == OUTPUT_INTERNAL) &&
+	($output_selection == OUTPUT_INTERNAL &&
 	 !($functype eq "function" && defined($function_table{$name}))))
     {
 	&$func(@_);
@@ -1062,7 +1198,7 @@
     my $x = shift;
     my $file = shift;
 
-    if ($x =~ /(struct|union)\s+(\w+)\s*\{(.*)\}(\s*(__packed|__aligned|__attribute__\s*\(\([a-z0-9,_\s\(\)]*\)\)))*/) {
+    if ($x =~ /(struct|union)\s+(\w+)\s*\{(.*)\}(\s*(__packed|__aligned|____cacheline_aligned_in_smp|____cacheline_aligned|__attribute__\s*\(\([a-z0-9,_\s\(\)]*\)\)))*/) {
 	my $decl_type = $1;
 	$declaration_name = $2;
 	my $members = $3;
@@ -1073,11 +1209,15 @@
 	# strip comments:
 	$members =~ s/\/\*.*?\*\///gos;
 	# strip attributes
-	$members =~ s/\s*__attribute__\s*\(\([a-z0-9,_\*\s\(\)]*\)\)//gi;
-	$members =~ s/\s*__aligned\s*\([^;]*\)//gos;
-	$members =~ s/\s*__packed\s*//gos;
-	$members =~ s/\s*CRYPTO_MINALIGN_ATTR//gos;
+	$members =~ s/\s*__attribute__\s*\(\([a-z0-9,_\*\s\(\)]*\)\)/ /gi;
+	$members =~ s/\s*__aligned\s*\([^;]*\)/ /gos;
+	$members =~ s/\s*__packed\s*/ /gos;
+	$members =~ s/\s*CRYPTO_MINALIGN_ATTR/ /gos;
+	$members =~ s/\s*____cacheline_aligned_in_smp/ /gos;
+	$members =~ s/\s*____cacheline_aligned/ /gos;
+
 	# replace DECLARE_BITMAP
+	$members =~ s/__ETHTOOL_DECLARE_LINK_MODE_MASK\s*\(([^\)]+)\)/DECLARE_BITMAP($1, __ETHTOOL_LINK_MODE_MASK_NBITS)/gos;
 	$members =~ s/DECLARE_BITMAP\s*\(([^,)]+),\s*([^,)]+)\)/unsigned long $1\[BITS_TO_LONGS($2)\]/gos;
 	# replace DECLARE_HASHTABLE
 	$members =~ s/DECLARE_HASHTABLE\s*\(([^,)]+),\s*([^,)]+)\)/unsigned long $1\[1 << (($2) - 1)\]/gos;
@@ -1204,6 +1344,8 @@
 	my $functype = shift;
 	my $name = shift;
 
+	return 0 if (defined($nosymbol_table{$name}));
+
 	return 1 if ($output_selection == OUTPUT_ALL);
 
 	if ($output_selection == OUTPUT_EXPORTED) {
@@ -1227,27 +1369,28 @@
 			return 0;
 		}
 	}
-	if ($output_selection == OUTPUT_EXCLUDE) {
-		if (!defined($function_table{$name})) {
-			return 1;
-		} else {
-			return 0;
-		}
-	}
 	die("Please add the new output type at show_warnings()");
 }
 
 sub dump_enum($$) {
     my $x = shift;
     my $file = shift;
+    my $members;
+
 
     $x =~ s@/\*.*?\*/@@gos;	# strip comments.
     # strip #define macros inside enums
     $x =~ s@#\s*((define|ifdef)\s+|endif)[^;]*;@@gos;
 
-    if ($x =~ /enum\s+(\w*)\s*\{(.*)\}/) {
+    if ($x =~ /typedef\s+enum\s*\{(.*)\}\s*(\w*)\s*;/) {
+	$declaration_name = $2;
+	$members = $1;
+    } elsif ($x =~ /enum\s+(\w*)\s*\{(.*)\}/) {
 	$declaration_name = $1;
-	my $members = $2;
+	$members = $2;
+    }
+
+    if ($members) {
 	my %_members;
 
 	$members =~ s/\s+$//;
@@ -1282,27 +1425,31 @@
 			    'sections' => \%sections,
 			    'purpose' => $declaration_purpose
 			   });
-    }
-    else {
+    } else {
 	print STDERR "${file}:$.: error: Cannot parse enum!\n";
 	++$errors;
     }
 }
 
+my $typedef_type = qr { ((?:\s+[\w\*]+\b){1,8})\s* }x;
+my $typedef_ident = qr { \*?\s*(\w\S+)\s* }x;
+my $typedef_args = qr { \s*\((.*)\); }x;
+
+my $typedef1 = qr { typedef$typedef_type\($typedef_ident\)$typedef_args }x;
+my $typedef2 = qr { typedef$typedef_type$typedef_ident$typedef_args }x;
+
 sub dump_typedef($$) {
     my $x = shift;
     my $file = shift;
 
     $x =~ s@/\*.*?\*/@@gos;	# strip comments.
 
-    # Parse function prototypes
-    if ($x =~ /typedef\s+(\w+)\s*\(\*\s*(\w\S+)\s*\)\s*\((.*)\);/ ||
-	$x =~ /typedef\s+(\w+)\s*(\w\S+)\s*\s*\((.*)\);/) {
-
-	# Function typedefs
+    # Parse function typedef prototypes
+    if ($x =~ $typedef1 || $x =~ $typedef2) {
 	$return_type = $1;
 	$declaration_name = $2;
 	my $args = $3;
+	$return_type =~ s/^\s+//;
 
 	create_parameterlist($args, ',', $file, $declaration_name);
 
@@ -1378,7 +1525,7 @@
 	    # Treat preprocessor directive as a typeless variable just to fill
 	    # corresponding data structures "correctly". Catch it later in
 	    # output_* subs.
-	    push_parameter($arg, "", $file);
+	    push_parameter($arg, "", "", $file);
 	} elsif ($arg =~ m/\(.+\)\s*\(/) {
 	    # pointer-to-function
 	    $arg =~ tr/#/,/;
@@ -1387,7 +1534,7 @@
 	    $type = $arg;
 	    $type =~ s/([^\(]+\(\*?)\s*$param/$1/;
 	    save_struct_actual($param);
-	    push_parameter($param, $type, $file, $declaration_name);
+	    push_parameter($param, $type, $arg, $file, $declaration_name);
 	} elsif ($arg) {
 	    $arg =~ s/\s*:\s*/:/g;
 	    $arg =~ s/\s*\[/\[/g;
@@ -1412,26 +1559,28 @@
 	    foreach $param (@args) {
 		if ($param =~ m/^(\*+)\s*(.*)/) {
 		    save_struct_actual($2);
-		    push_parameter($2, "$type $1", $file, $declaration_name);
+
+		    push_parameter($2, "$type $1", $arg, $file, $declaration_name);
 		}
 		elsif ($param =~ m/(.*?):(\d+)/) {
 		    if ($type ne "") { # skip unnamed bit-fields
 			save_struct_actual($1);
-			push_parameter($1, "$type:$2", $file, $declaration_name)
+			push_parameter($1, "$type:$2", $arg, $file, $declaration_name)
 		    }
 		}
 		else {
 		    save_struct_actual($param);
-		    push_parameter($param, $type, $file, $declaration_name);
+		    push_parameter($param, $type, $arg, $file, $declaration_name);
 		}
 	    }
 	}
     }
 }
 
-sub push_parameter($$$$) {
+sub push_parameter($$$$$) {
 	my $param = shift;
 	my $type = shift;
+	my $org_arg = shift;
 	my $file = shift;
 	my $declaration_name = shift;
 
@@ -1449,6 +1598,10 @@
 	      # handles unnamed variable parameters
 	      $param = "...";
 	    }
+	    elsif ($param =~ /\w\.\.\.$/) {
+	      # for named variable parameters of the form `x...`, remove the dots
+	      $param =~ s/\.\.\.$//;
+	    }
 	    if (!defined $parameterdescs{$param} || $parameterdescs{$param} eq "") {
 		$parameterdescs{$param} = "variable arguments";
 	    }
@@ -1491,8 +1644,8 @@
 	# "[blah" in a parameter string;
 	###$param =~ s/\s*//g;
 	push @parameterlist, $param;
-	$type =~ s/\s\s+/ /g;
-	$parametertypes{$param} = $type;
+	$org_arg =~ s/\s\s+/ /g;
+	$parametertypes{$param} = $org_arg;
 }
 
 sub check_sections($$$$$) {
@@ -1566,6 +1719,8 @@
     my $file = shift;
     my $noret = 0;
 
+    print_lineno($new_start_line);
+
     $prototype =~ s/^static +//;
     $prototype =~ s/^extern +//;
     $prototype =~ s/^asmlinkage +//;
@@ -1641,30 +1796,48 @@
 	return;
     }
 
-	my $prms = join " ", @parameterlist;
-	check_sections($file, $declaration_name, "function", $sectcheck, $prms);
+    my $prms = join " ", @parameterlist;
+    check_sections($file, $declaration_name, "function", $sectcheck, $prms);
 
-        # This check emits a lot of warnings at the moment, because many
-        # functions don't have a 'Return' doc section. So until the number
-        # of warnings goes sufficiently down, the check is only performed in
-        # verbose mode.
-        # TODO: always perform the check.
-        if ($verbose && !$noret) {
-                check_return_section($file, $declaration_name, $return_type);
-        }
+    # This check emits a lot of warnings at the moment, because many
+    # functions don't have a 'Return' doc section. So until the number
+    # of warnings goes sufficiently down, the check is only performed in
+    # verbose mode.
+    # TODO: always perform the check.
+    if ($verbose && !$noret) {
+	    check_return_section($file, $declaration_name, $return_type);
+    }
 
-    output_declaration($declaration_name,
-		       'function',
-		       {'function' => $declaration_name,
-			'module' => $modulename,
-			'functiontype' => $return_type,
-			'parameterlist' => \@parameterlist,
-			'parameterdescs' => \%parameterdescs,
-			'parametertypes' => \%parametertypes,
-			'sectionlist' => \@sectionlist,
-			'sections' => \%sections,
-			'purpose' => $declaration_purpose
-		       });
+    # The function parser can be called with a typedef parameter.
+    # Handle it.
+    if ($return_type =~ /typedef/) {
+	output_declaration($declaration_name,
+			   'function',
+			   {'function' => $declaration_name,
+			    'typedef' => 1,
+			    'module' => $modulename,
+			    'functiontype' => $return_type,
+			    'parameterlist' => \@parameterlist,
+			    'parameterdescs' => \%parameterdescs,
+			    'parametertypes' => \%parametertypes,
+			    'sectionlist' => \@sectionlist,
+			    'sections' => \%sections,
+			    'purpose' => $declaration_purpose
+			   });
+    } else {
+	output_declaration($declaration_name,
+			   'function',
+			   {'function' => $declaration_name,
+			    'module' => $modulename,
+			    'functiontype' => $return_type,
+			    'parameterlist' => \@parameterlist,
+			    'parameterdescs' => \%parameterdescs,
+			    'parametertypes' => \%parametertypes,
+			    'sectionlist' => \@sectionlist,
+			    'sections' => \%sections,
+			    'purpose' => $declaration_purpose
+			   });
+    }
 }
 
 sub reset_state {
@@ -1759,6 +1932,11 @@
 	$prototype =~ s@/\*.*?\*/@@gos;	# strip comments.
 	$prototype =~ s@[\r\n]+@ @gos; # strip newlines/cr's.
 	$prototype =~ s@^\s+@@gos; # strip leading spaces
+
+	 # Handle prototypes for function pointers like:
+	 # int (*pcs_config)(struct foo)
+	$prototype =~ s@^(\S+\s+)\(\s*\*(\S+)\)@$1$2@gos;
+
 	if ($prototype =~ /SYSCALL_DEFINE/) {
 		syscall_munge();
 	}
@@ -1837,6 +2015,7 @@
 
     while (<IN>) {
 	if (/$export_symbol/) {
+	    next if (defined($nosymbol_table{$2}));
 	    $function_table{$2} = 1;
 	}
     }
@@ -1868,7 +2047,7 @@
     if (/$doc_block/o) {
 	$state = STATE_DOCBLOCK;
 	$contents = "";
-	$new_start_line = $. + 1;
+	$new_start_line = $.;
 
 	if ( $1 eq "" ) {
 	    $section = $section_intro;
@@ -1936,6 +2115,25 @@
 sub process_body($$) {
     my $file = shift;
 
+    # Until all named variable macro parameters are
+    # documented using the bare name (`x`) rather than with
+    # dots (`x...`), strip the dots:
+    if ($section =~ /\w\.\.\.$/) {
+	$section =~ s/\.\.\.$//;
+
+	if ($verbose) {
+	    print STDERR "${file}:$.: warning: Variable macro arguments should be documented without dots\n";
+	    ++$warnings;
+	}
+    }
+
+    if ($state == STATE_BODY_WITH_BLANK_LINE && /^\s*\*\s?\S/) {
+	dump_section($file, $section, $contents);
+	$section = $section_default;
+	$new_start_line = $.;
+	$contents = "";
+    }
+
     if (/$doc_sect/i) { # case insensitive for supported section names
 	$newsection = $1;
 	$newcontents = $2;
@@ -1988,19 +2186,23 @@
 	$prototype = "";
 	$state = STATE_PROTO;
 	$brcount = 0;
+        $new_start_line = $. + 1;
     } elsif (/$doc_content/) {
-	# miguel-style comment kludge, look for blank lines after
-	# @parameter line to signify start of description
 	if ($1 eq "") {
-	    if ($section =~ m/^@/ || $section eq $section_context) {
+	    if ($section eq $section_context) {
 		dump_section($file, $section, $contents);
 		$section = $section_default;
 		$contents = "";
 		$new_start_line = $.;
+		$state = STATE_BODY;
 	    } else {
+		if ($section ne $section_default) {
+		    $state = STATE_BODY_WITH_BLANK_LINE;
+		} else {
+		    $state = STATE_BODY;
+		}
 		$contents .= "\n";
 	    }
-	    $state = STATE_BODY;
 	} elsif ($state == STATE_BODY_MAYBE) {
 	    # Continued declaration purpose
 	    chomp($declaration_purpose);
@@ -2132,7 +2334,7 @@
 
     $file = map_filename($orig_file);
 
-    if (!open(IN,"<$file")) {
+    if (!open(IN_FILE,"<$file")) {
 	print STDERR "Error: Cannot open file $file\n";
 	++$errors;
 	return;
@@ -2141,9 +2343,9 @@
     $. = 1;
 
     $section_counter = 0;
-    while (<IN>) {
+    while (<IN_FILE>) {
 	while (s/\\\s*$//) {
-	    $_ .= <IN>;
+	    $_ .= <IN_FILE>;
 	}
 	# Replace tabs by spaces
         while ($_ =~ s/\t+/' ' x (length($&) * 8 - length($`) % 8)/e) {};
@@ -2152,7 +2354,8 @@
 	    process_normal();
 	} elsif ($state == STATE_NAME) {
 	    process_name($file, $_);
-	} elsif ($state == STATE_BODY || $state == STATE_BODY_MAYBE) {
+	} elsif ($state == STATE_BODY || $state == STATE_BODY_MAYBE ||
+		 $state == STATE_BODY_WITH_BLANK_LINE) {
 	    process_body($file, $_);
 	} elsif ($state == STATE_INLINE) { # scanning for inline parameters
 	    process_inline($file, $_);
@@ -2174,9 +2377,14 @@
 	    print STDERR "${file}:1: warning: no structured comments found\n";
 	}
     }
+    close IN_FILE;
 }
 
 
+if ($output_mode eq "rst") {
+	get_sphinx_version() if (!$sphinx_major);
+}
+
 $kernelversion = get_kernel_version();
 
 # generate a sequence of code that will splice in highlighting information
@@ -2223,4 +2431,9 @@
   print STDERR "$warnings warnings\n";
 }
 
-exit($output_mode eq "none" ? 0 : $errors);
+if ($Werror && $warnings) {
+    print STDERR "$warnings warnings as Errors\n";
+    exit($warnings);
+} else {
+    exit($output_mode eq "none" ? 0 : $errors)
+}
diff --git a/scripts/leaking_addresses.pl b/scripts/leaking_addresses.pl
index b2d8b8a..8f636a2 100755
--- a/scripts/leaking_addresses.pl
+++ b/scripts/leaking_addresses.pl
@@ -455,8 +455,9 @@
 
 	open my $fh, "<", $file or return;
 	while ( <$fh> ) {
+		chomp;
 		if (may_leak_address($_)) {
-			print $file . ': ' . $_;
+			printf("$file: $_\n");
 		}
 	}
 	close $fh;
diff --git a/scripts/link-vmlinux.sh b/scripts/link-vmlinux.sh
index 8b6325c..6eded325 100755
--- a/scripts/link-vmlinux.sh
+++ b/scripts/link-vmlinux.sh
@@ -30,6 +30,10 @@
 # Error out on error
 set -e
 
+LD="$1"
+KBUILD_LDFLAGS="$2"
+LDFLAGS_vmlinux="$3"
+
 # Nice output in kbuild format
 # Will be supressed by "make -s"
 info()
@@ -55,6 +59,29 @@
 	${LD} ${KBUILD_LDFLAGS} -r -o ${1} ${objects}
 }
 
+objtool_link()
+{
+	local objtoolopt;
+
+	if [ -n "${CONFIG_VMLINUX_VALIDATION}" ]; then
+		objtoolopt="check"
+		if [ -z "${CONFIG_FRAME_POINTER}" ]; then
+			objtoolopt="${objtoolopt} --no-fp"
+		fi
+		if [ -n "${CONFIG_GCOV_KERNEL}" ]; then
+			objtoolopt="${objtoolopt} --no-unreachable"
+		fi
+		if [ -n "${CONFIG_RETPOLINE}" ]; then
+			objtoolopt="${objtoolopt} --retpoline"
+		fi
+		if [ -n "${CONFIG_X86_SMAP}" ]; then
+			objtoolopt="${objtoolopt} --uaccess"
+		fi
+		info OBJTOOL ${1}
+		tools/objtool/objtool ${objtoolopt} ${1}
+	fi
+}
+
 # Link of vmlinux
 # ${1} - output file
 # ${2}, ${3}, ... - optional extra .o files
@@ -120,8 +147,8 @@
 	fi
 
 	pahole_ver=$(${PAHOLE} --version | sed -E 's/v([0-9]+)\.([0-9]+)/\1\2/')
-	if [ "${pahole_ver}" -lt "113" ]; then
-		echo >&2 "BTF: ${1}: pahole version $(${PAHOLE} --version) is too old, need at least v1.13"
+	if [ "${pahole_ver}" -lt "116" ]; then
+		echo >&2 "BTF: ${1}: pahole version $(${PAHOLE} --version) is too old, need at least v1.16"
 		return 1
 	fi
 
@@ -142,10 +169,9 @@
 	printf '\1' | dd of=${2} conv=notrunc bs=1 seek=16 status=none
 }
 
-# Create ${2} .o file with all symbols from the ${1} object file
+# Create ${2} .S file with all symbols from the ${1} object file
 kallsyms()
 {
-	info KSYM ${2}
 	local kallsymopt;
 
 	if [ -n "${CONFIG_KALLSYMS_ALL}" ]; then
@@ -160,13 +186,8 @@
 		kallsymopt="${kallsymopt} --base-relative"
 	fi
 
-	local aflags="${KBUILD_AFLAGS} ${KBUILD_AFLAGS_KERNEL}               \
-		      ${NOSTDINC_FLAGS} ${LINUXINCLUDE} ${KBUILD_CPPFLAGS}"
-
-	local afile="`basename ${2} .o`.S"
-
-	${NM} -n ${1} | scripts/kallsyms ${kallsymopt} > ${afile}
-	${CC} ${aflags} -c -o ${2} ${afile}
+	info KSYMS ${2}
+	${NM} -n ${1} | scripts/kallsyms ${kallsymopt} > ${2}
 }
 
 # Perform one step in kallsyms generation, including temporary linking of
@@ -176,9 +197,15 @@
 	kallsymso_prev=${kallsymso}
 	kallsyms_vmlinux=.tmp_vmlinux.kallsyms${1}
 	kallsymso=${kallsyms_vmlinux}.o
+	kallsyms_S=${kallsyms_vmlinux}.S
 
 	vmlinux_link ${kallsyms_vmlinux} "${kallsymso_prev}" ${btf_vmlinux_bin_o}
-	kallsyms ${kallsyms_vmlinux} ${kallsymso}
+	kallsyms ${kallsyms_vmlinux} ${kallsyms_S}
+
+	info AS ${kallsyms_S}
+	${CC} ${NOSTDINC_FLAGS} ${LINUXINCLUDE} ${KBUILD_CPPFLAGS} \
+	      ${KBUILD_AFLAGS} ${KBUILD_AFLAGS_KERNEL} \
+	      -c -o ${kallsymso} ${kallsyms_S}
 }
 
 # Create map file with all symbols from ${1}
@@ -188,9 +215,9 @@
 	${CONFIG_SHELL} "${srctree}/scripts/mksysmap" ${1} ${2}
 }
 
-sortextable()
+sorttable()
 {
-	${objtree}/scripts/sortextable ${1}
+	${objtree}/scripts/sorttable ${1}
 }
 
 # Delete output files in case of error
@@ -218,8 +245,6 @@
 }
 trap on_signals HUP INT QUIT TERM
 
-#
-#
 # Use "make V=1" to debug this script
 case "${KBUILD_VERBOSE}" in
 *1*)
@@ -246,17 +271,22 @@
 fi;
 
 # final build of init/
-${MAKE} -f "${srctree}/scripts/Makefile.build" obj=init
+${MAKE} -f "${srctree}/scripts/Makefile.build" obj=init need-builtin=1
 
 #link vmlinux.o
 info LD vmlinux.o
 modpost_link vmlinux.o
+objtool_link vmlinux.o
 
 # modpost vmlinux.o to check for section mismatches
 ${MAKE} -f "${srctree}/scripts/Makefile.modpost" MODPOST_VMLINUX=1
 
 info MODINFO modules.builtin.modinfo
 ${OBJCOPY} -j .modinfo -O binary vmlinux.o modules.builtin.modinfo
+info GEN modules.builtin
+# The second line aids cases where multiple modules share the same object.
+tr '\0' '\n' < modules.builtin.modinfo | sed -n 's/^[[:alnum:]:_]*\.file=//p' |
+	tr ' ' '\n' | uniq | sed -e 's:^:kernel/:' -e 's/$/.ko/' > modules.builtin
 
 btf_vmlinux_bin_o=""
 if [ -n "${CONFIG_DEBUG_INFO_BTF}" ]; then
@@ -310,9 +340,18 @@
 
 vmlinux_link vmlinux "${kallsymso}" ${btf_vmlinux_bin_o}
 
-if [ -n "${CONFIG_BUILDTIME_EXTABLE_SORT}" ]; then
-	info SORTEX vmlinux
-	sortextable vmlinux
+# fill in BTF IDs
+if [ -n "${CONFIG_DEBUG_INFO_BTF}" -a -n "${CONFIG_BPF}" ]; then
+	info BTFIDS vmlinux
+	${RESOLVE_BTFIDS} vmlinux
+fi
+
+if [ -n "${CONFIG_BUILDTIME_TABLE_SORT}" ]; then
+	info SORTTAB vmlinux
+	if ! sorttable vmlinux; then
+		echo >&2 Failed to sort kernel tables
+		exit 1
+	fi
 fi
 
 info SYSMAP System.map
diff --git a/scripts/lld-version.sh b/scripts/lld-version.sh
new file mode 100755
index 0000000..f1eeee4
--- /dev/null
+++ b/scripts/lld-version.sh
@@ -0,0 +1,37 @@
+#!/bin/sh
+# SPDX-License-Identifier: GPL-2.0
+#
+# Usage: $ ./scripts/lld-version.sh ld.lld
+#
+# Print the linker version of `ld.lld' in a 5 or 6-digit form
+# such as `100001' for ld.lld 10.0.1 etc.
+
+set -e
+
+# Convert the version string x.y.z to a canonical 5 or 6-digit form.
+get_canonical_version()
+{
+	IFS=.
+	set -- $1
+
+	# If the 2nd or 3rd field is missing, fill it with a zero.
+	echo $((10000 * $1 + 100 * ${2:-0} + ${3:-0}))
+}
+
+# Get the first line of the --version output.
+IFS='
+'
+set -- $(LC_ALL=C "$@" --version)
+
+# Split the line on spaces.
+IFS=' '
+set -- $1
+
+while [ $# -gt 1 -a "$1" != "LLD" ]; do
+	shift
+done
+if [ "$1" = LLD ]; then
+	echo $(get_canonical_version ${2%-*})
+else
+	echo 0
+fi
diff --git a/scripts/mkcompile_h b/scripts/mkcompile_h
index 06c1e9e..a72b154 100755
--- a/scripts/mkcompile_h
+++ b/scripts/mkcompile_h
@@ -6,21 +6,11 @@
 SMP=$3
 PREEMPT=$4
 PREEMPT_RT=$5
-CC=$6
+CC_VERSION="$6"
+LD=$7
 
 vecho() { [ "${quiet}" = "silent_" ] || echo "$@" ; }
 
-# If compile.h exists already and we don't own autoconf.h
-# (i.e. we're not the same user who did make *config), don't
-# modify compile.h
-# So "sudo make install" won't change the "compiled by <user>"
-# do "compiled by root"
-
-if [ -r $TARGET -a ! -O include/generated/autoconf.h ]; then
-  vecho "  SKIPPED $TARGET"
-  exit 0
-fi
-
 # Do not expand names
 set -f
 
@@ -45,7 +35,7 @@
 	LINUX_COMPILE_BY=$KBUILD_BUILD_USER
 fi
 if test -z "$KBUILD_BUILD_HOST"; then
-	LINUX_COMPILE_HOST=`hostname`
+	LINUX_COMPILE_HOST=`uname -n`
 else
 	LINUX_COMPILE_HOST=$KBUILD_BUILD_HOST
 fi
@@ -55,12 +45,10 @@
 if [ -n "$SMP" ] ; then CONFIG_FLAGS="SMP"; fi
 if [ -n "$PREEMPT" ] ; then CONFIG_FLAGS="$CONFIG_FLAGS PREEMPT"; fi
 if [ -n "$PREEMPT_RT" ] ; then CONFIG_FLAGS="$CONFIG_FLAGS PREEMPT_RT"; fi
-UTS_VERSION="$UTS_VERSION $CONFIG_FLAGS $TIMESTAMP"
 
 # Truncate to maximum length
-
 UTS_LEN=64
-UTS_TRUNCATE="cut -b -$UTS_LEN"
+UTS_VERSION="$(echo $UTS_VERSION $CONFIG_FLAGS $TIMESTAMP | cut -b -$UTS_LEN)"
 
 # Generate a temporary compile.h
 
@@ -69,12 +57,14 @@
 
   echo \#define UTS_MACHINE \"$ARCH\"
 
-  echo \#define UTS_VERSION \"`echo $UTS_VERSION | $UTS_TRUNCATE`\"
+  echo \#define UTS_VERSION \"$UTS_VERSION\"
 
-  echo \#define LINUX_COMPILE_BY \"`echo $LINUX_COMPILE_BY | $UTS_TRUNCATE`\"
-  echo \#define LINUX_COMPILE_HOST \"`echo $LINUX_COMPILE_HOST | $UTS_TRUNCATE`\"
+  printf '#define LINUX_COMPILE_BY "%s"\n' "$LINUX_COMPILE_BY"
+  echo \#define LINUX_COMPILE_HOST \"$LINUX_COMPILE_HOST\"
 
-  echo \#define LINUX_COMPILER \"`$CC -v 2>&1 | grep ' version ' | sed 's/[[:space:]]*$//'`\"
+  LD_VERSION=$($LD -v | head -n1 | sed 's/(compatible with [^)]*)//' \
+		      | sed 's/[[:space:]]*$//')
+  printf '#define LINUX_COMPILER "%s"\n' "$CC_VERSION, $LD_VERSION"
 } > .tmpcompile
 
 # Only replace the real compile.h if the new one is different,
diff --git a/scripts/mod/.gitignore b/scripts/mod/.gitignore
index 3bd11b6..07e4a39 100644
--- a/scripts/mod/.gitignore
+++ b/scripts/mod/.gitignore
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-2.0-only
 elfconfig.h
 mk_elfconfig
 modpost
diff --git a/scripts/mod/Makefile b/scripts/mod/Makefile
index 42c5d50..7807168 100644
--- a/scripts/mod/Makefile
+++ b/scripts/mod/Makefile
@@ -1,8 +1,8 @@
 # SPDX-License-Identifier: GPL-2.0
 OBJECT_FILES_NON_STANDARD := y
 
-hostprogs-y	:= modpost mk_elfconfig
-always		:= $(hostprogs-y) empty.o
+hostprogs-always-y	+= modpost mk_elfconfig
+always-y		+= empty.o
 
 modpost-objs	:= modpost.o file2alias.o sumversion.o
 
diff --git a/scripts/mod/devicetable-offsets.c b/scripts/mod/devicetable-offsets.c
index 054405b..27007c1 100644
--- a/scripts/mod/devicetable-offsets.c
+++ b/scripts/mod/devicetable-offsets.c
@@ -145,6 +145,13 @@
 	DEVID(i2c_device_id);
 	DEVID_FIELD(i2c_device_id, name);
 
+	DEVID(i3c_device_id);
+	DEVID_FIELD(i3c_device_id, match_flags);
+	DEVID_FIELD(i3c_device_id, dcr);
+	DEVID_FIELD(i3c_device_id, manuf_id);
+	DEVID_FIELD(i3c_device_id, part_id);
+	DEVID_FIELD(i3c_device_id, extra_info);
+
 	DEVID(spi_device_id);
 	DEVID_FIELD(spi_device_id, name);
 
@@ -209,6 +216,8 @@
 	DEVID(sdw_device_id);
 	DEVID_FIELD(sdw_device_id, mfg_id);
 	DEVID_FIELD(sdw_device_id, part_id);
+	DEVID_FIELD(sdw_device_id, sdw_version);
+	DEVID_FIELD(sdw_device_id, class_id);
 
 	DEVID(fsl_mc_device_id);
 	DEVID_FIELD(fsl_mc_device_id, vendor);
@@ -231,5 +240,8 @@
 	DEVID(wmi_device_id);
 	DEVID_FIELD(wmi_device_id, guid_string);
 
+	DEVID(mhi_device_id);
+	DEVID_FIELD(mhi_device_id, chan);
+
 	return 0;
 }
diff --git a/scripts/mod/file2alias.c b/scripts/mod/file2alias.c
index c91eba7..2417dd1 100644
--- a/scripts/mod/file2alias.c
+++ b/scripts/mod/file2alias.c
@@ -919,6 +919,24 @@
 	return 1;
 }
 
+static int do_i3c_entry(const char *filename, void *symval,
+			char *alias)
+{
+	DEF_FIELD(symval, i3c_device_id, match_flags);
+	DEF_FIELD(symval, i3c_device_id, dcr);
+	DEF_FIELD(symval, i3c_device_id, manuf_id);
+	DEF_FIELD(symval, i3c_device_id, part_id);
+	DEF_FIELD(symval, i3c_device_id, extra_info);
+
+	strcpy(alias, "i3c:");
+	ADD(alias, "dcr", match_flags & I3C_MATCH_DCR, dcr);
+	ADD(alias, "manuf", match_flags & I3C_MATCH_MANUF, manuf_id);
+	ADD(alias, "part", match_flags & I3C_MATCH_PART, part_id);
+	ADD(alias, "ext", match_flags & I3C_MATCH_EXTRA_INFO, extra_info);
+
+	return 1;
+}
+
 /* Looks like: spi:S */
 static int do_spi_entry(const char *filename, void *symval,
 			char *alias)
@@ -936,6 +954,8 @@
 	{ "bvn", DMI_BIOS_VENDOR },
 	{ "bvr", DMI_BIOS_VERSION },
 	{ "bd",  DMI_BIOS_DATE },
+	{ "br",  DMI_BIOS_RELEASE },
+	{ "efr", DMI_EC_FIRMWARE_RELEASE },
 	{ "svn", DMI_SYS_VENDOR },
 	{ "pn",  DMI_PRODUCT_NAME },
 	{ "pvr", DMI_PRODUCT_VERSION },
@@ -1238,15 +1258,19 @@
 	return 1;
 }
 
-/* Looks like: sdw:mNpN */
+/* Looks like: sdw:mNpNvNcN */
 static int do_sdw_entry(const char *filename, void *symval, char *alias)
 {
 	DEF_FIELD(symval, sdw_device_id, mfg_id);
 	DEF_FIELD(symval, sdw_device_id, part_id);
+	DEF_FIELD(symval, sdw_device_id, sdw_version);
+	DEF_FIELD(symval, sdw_device_id, class_id);
 
 	strcpy(alias, "sdw:");
 	ADD(alias, "m", mfg_id != 0, mfg_id);
 	ADD(alias, "p", part_id != 0, part_id);
+	ADD(alias, "v", sdw_version != 0, sdw_version);
+	ADD(alias, "c", class_id != 0, class_id);
 
 	add_wildcard(alias);
 	return 1;
@@ -1335,6 +1359,15 @@
 	return 1;
 }
 
+/* Looks like: mhi:S */
+static int do_mhi_entry(const char *filename, void *symval, char *alias)
+{
+	DEF_FIELD_ADDR(symval, mhi_device_id, chan);
+	sprintf(alias, MHI_DEVICE_MODALIAS_FMT, *chan);
+
+	return 1;
+}
+
 /* Does namelen bytes of name exactly match the symbol? */
 static bool sym_is(const char *name, unsigned namelen, const char *symbol)
 {
@@ -1386,6 +1419,7 @@
 	{"vmbus", SIZE_hv_vmbus_device_id, do_vmbus_entry},
 	{"rpmsg", SIZE_rpmsg_device_id, do_rpmsg_entry},
 	{"i2c", SIZE_i2c_device_id, do_i2c_entry},
+	{"i3c", SIZE_i3c_device_id, do_i3c_entry},
 	{"spi", SIZE_spi_device_id, do_spi_entry},
 	{"dmi", SIZE_dmi_system_id, do_dmi_entry},
 	{"platform", SIZE_platform_device_id, do_platform_entry},
@@ -1407,6 +1441,7 @@
 	{"typec", SIZE_typec_device_id, do_typec_entry},
 	{"tee", SIZE_tee_client_device_id, do_tee_entry},
 	{"wmi", SIZE_wmi_device_id, do_wmi_entry},
+	{"mhi", SIZE_mhi_device_id, do_mhi_entry},
 };
 
 /* Create MODULE_ALIAS() statements.
diff --git a/scripts/mod/modpost.c b/scripts/mod/modpost.c
index 13cda6a..e08f75a 100644
--- a/scripts/mod/modpost.c
+++ b/scripts/mod/modpost.c
@@ -12,6 +12,7 @@
  */
 
 #define _GNU_SOURCE
+#include <elf.h>
 #include <stdio.h>
 #include <ctype.h>
 #include <string.h>
@@ -29,8 +30,6 @@
 static int all_versions = 0;
 /* If we are modposting external module set to 1 */
 static int external_module = 0;
-/* Warn about section mismatch in vmlinux if set to 1 */
-static int vmlinux_section_warnings = 1;
 /* Only warn about unresolved symbols */
 static int warn_unresolved = 0;
 /* How a symbol is exported */
@@ -38,8 +37,8 @@
 static int sec_mismatch_fatal = 0;
 /* ignore missing files */
 static int ignore_missing_files;
-/* write namespace dependencies */
-static int write_namespace_deps;
+/* If set to 1, only warn (instead of error) about missing ns imports */
+static int allow_missing_ns_imports;
 
 enum export {
 	export_plain,      export_unused,     export_gpl,
@@ -52,41 +51,33 @@
 
 #define MODULE_NAME_LEN (64 - sizeof(Elf_Addr))
 
-#define PRINTF __attribute__ ((format (printf, 1, 2)))
-
-PRINTF void fatal(const char *fmt, ...)
+void __attribute__((format(printf, 2, 3)))
+modpost_log(enum loglevel loglevel, const char *fmt, ...)
 {
 	va_list arglist;
 
-	fprintf(stderr, "FATAL: ");
+	switch (loglevel) {
+	case LOG_WARN:
+		fprintf(stderr, "WARNING: ");
+		break;
+	case LOG_ERROR:
+		fprintf(stderr, "ERROR: ");
+		break;
+	case LOG_FATAL:
+		fprintf(stderr, "FATAL: ");
+		break;
+	default: /* invalid loglevel, ignore */
+		break;
+	}
+
+	fprintf(stderr, "modpost: ");
 
 	va_start(arglist, fmt);
 	vfprintf(stderr, fmt, arglist);
 	va_end(arglist);
 
-	exit(1);
-}
-
-PRINTF void warn(const char *fmt, ...)
-{
-	va_list arglist;
-
-	fprintf(stderr, "WARNING: ");
-
-	va_start(arglist, fmt);
-	vfprintf(stderr, fmt, arglist);
-	va_end(arglist);
-}
-
-PRINTF void merror(const char *fmt, ...)
-{
-	va_list arglist;
-
-	fprintf(stderr, "ERROR: ");
-
-	va_start(arglist, fmt);
-	vfprintf(stderr, fmt, arglist);
-	va_end(arglist);
+	if (loglevel == LOG_FATAL)
+		exit(1);
 }
 
 static inline bool strends(const char *str, const char *postfix)
@@ -97,28 +88,72 @@
 	return strcmp(str + strlen(str) - strlen(postfix), postfix) == 0;
 }
 
-static int is_vmlinux(const char *modname)
-{
-	const char *myname;
-
-	myname = strrchr(modname, '/');
-	if (myname)
-		myname++;
-	else
-		myname = modname;
-
-	return (strcmp(myname, "vmlinux") == 0) ||
-	       (strcmp(myname, "vmlinux.o") == 0);
-}
-
 void *do_nofail(void *ptr, const char *expr)
 {
 	if (!ptr)
-		fatal("modpost: Memory allocation failure: %s.\n", expr);
+		fatal("Memory allocation failure: %s.\n", expr);
 
 	return ptr;
 }
 
+char *read_text_file(const char *filename)
+{
+	struct stat st;
+	size_t nbytes;
+	int fd;
+	char *buf;
+
+	fd = open(filename, O_RDONLY);
+	if (fd < 0) {
+		perror(filename);
+		exit(1);
+	}
+
+	if (fstat(fd, &st) < 0) {
+		perror(filename);
+		exit(1);
+	}
+
+	buf = NOFAIL(malloc(st.st_size + 1));
+
+	nbytes = st.st_size;
+
+	while (nbytes) {
+		ssize_t bytes_read;
+
+		bytes_read = read(fd, buf, nbytes);
+		if (bytes_read < 0) {
+			perror(filename);
+			exit(1);
+		}
+
+		nbytes -= bytes_read;
+	}
+	buf[st.st_size] = '\0';
+
+	close(fd);
+
+	return buf;
+}
+
+char *get_line(char **stringp)
+{
+	char *orig = *stringp, *next;
+
+	/* do not return the unwanted extra line at EOF */
+	if (!orig || *orig == '\0')
+		return NULL;
+
+	/* don't use strsep here, it is not available everywhere */
+	next = strchr(orig, '\n');
+	if (next)
+		*next++ = '\0';
+
+	*stringp = next;
+
+	return orig;
+}
+
 /* A list of all modules we processed */
 static struct module *modules;
 
@@ -135,24 +170,20 @@
 static struct module *new_module(const char *modname)
 {
 	struct module *mod;
-	char *p;
 
-	mod = NOFAIL(malloc(sizeof(*mod)));
+	mod = NOFAIL(malloc(sizeof(*mod) + strlen(modname) + 1));
 	memset(mod, 0, sizeof(*mod));
-	p = NOFAIL(strdup(modname));
-
-	/* strip trailing .o */
-	if (strends(p, ".o")) {
-		p[strlen(p) - 2] = '\0';
-		mod->is_dot_o = 1;
-	}
 
 	/* add to list */
-	mod->name = p;
+	strcpy(mod->name, modname);
+	mod->is_vmlinux = (strcmp(modname, "vmlinux") == 0);
 	mod->gpl_compatible = -1;
 	mod->next = modules;
 	modules = mod;
 
+	if (mod->is_vmlinux)
+		have_vmlinux = 1;
+
 	return mod;
 }
 
@@ -168,13 +199,9 @@
 	int crc_valid;
 	char *namespace;
 	unsigned int weak:1;
-	unsigned int vmlinux:1;    /* 1 if symbol is defined in vmlinux */
-	unsigned int kernel:1;     /* 1 if symbol is from kernel
-				    *  (only for external modules) **/
-	unsigned int preloaded:1;  /* 1 if symbol from Module.symvers, or crc */
 	unsigned int is_static:1;  /* 1 if symbol is not global */
 	enum export  export;       /* Type of export */
-	char name[0];
+	char name[];
 };
 
 static struct symbol *symbolhash[SYMBOL_HASH_SIZE];
@@ -214,13 +241,11 @@
 				 enum export export)
 {
 	unsigned int hash;
-	struct symbol *new;
 
 	hash = tdb_hash(name) % SYMBOL_HASH_SIZE;
-	new = symbolhash[hash] = alloc_symbol(name, 0, symbolhash[hash]);
-	new->module = module;
-	new->export = export;
-	return new;
+	symbolhash[hash] = alloc_symbol(name, 0, symbolhash[hash]);
+
+	return symbolhash[hash];
 }
 
 static struct symbol *find_symbol(const char *name)
@@ -241,10 +266,8 @@
 static bool contains_namespace(struct namespace_list *list,
 			       const char *namespace)
 {
-	struct namespace_list *ns_entry;
-
-	for (ns_entry = list; ns_entry != NULL; ns_entry = ns_entry->next)
-		if (strcmp(ns_entry->namespace, namespace) == 0)
+	for (; list; list = list->next)
+		if (!strcmp(list->namespace, namespace))
 			return true;
 
 	return false;
@@ -300,16 +323,32 @@
 	return export_unknown;
 }
 
-static const char *sech_name(struct elf_info *elf, Elf_Shdr *sechdr)
+static void *sym_get_data_by_offset(const struct elf_info *info,
+				    unsigned int secindex, unsigned long offset)
 {
-	return (void *)elf->hdr +
-		elf->sechdrs[elf->secindex_strings].sh_offset +
-		sechdr->sh_name;
+	Elf_Shdr *sechdr = &info->sechdrs[secindex];
+
+	if (info->hdr->e_type != ET_REL)
+		offset -= sechdr->sh_addr;
+
+	return (void *)info->hdr + sechdr->sh_offset + offset;
 }
 
-static const char *sec_name(struct elf_info *elf, int secindex)
+static void *sym_get_data(const struct elf_info *info, const Elf_Sym *sym)
 {
-	return sech_name(elf, &elf->sechdrs[secindex]);
+	return sym_get_data_by_offset(info, get_secindex(info, sym),
+				      sym->st_value);
+}
+
+static const char *sech_name(const struct elf_info *info, Elf_Shdr *sechdr)
+{
+	return sym_get_data_by_offset(info, info->secindex_strings,
+				      sechdr->sh_name);
+}
+
+static const char *sec_name(const struct elf_info *info, int secindex)
+{
+	return sech_name(info, &info->sechdrs[secindex]);
 }
 
 #define strstarts(str, prefix) (strncmp(str, prefix, strlen(prefix)) == 0)
@@ -348,10 +387,10 @@
 		return export_unknown;
 }
 
-static const char *namespace_from_kstrtabns(struct elf_info *info,
-					    Elf_Sym *kstrtabns)
+static const char *namespace_from_kstrtabns(const struct elf_info *info,
+					    const Elf_Sym *sym)
 {
-	char *value = info->ksymtab_strings + kstrtabns->st_value;
+	const char *value = sym_get_data(info, sym);
 	return value[0] ? value : NULL;
 }
 
@@ -385,38 +424,35 @@
 
 	if (!s) {
 		s = new_symbol(name, mod, export);
-	} else {
-		if (!s->preloaded) {
-			warn("%s: '%s' exported twice. Previous export was in %s%s\n",
-			     mod->name, name, s->module->name,
-			     is_vmlinux(s->module->name) ? "" : ".ko");
-		} else {
-			/* In case Module.symvers was out of date */
-			s->module = mod;
-		}
+	} else if (!external_module || s->module->is_vmlinux ||
+		   s->module == mod) {
+		warn("%s: '%s' exported twice. Previous export was in %s%s\n",
+		     mod->name, name, s->module->name,
+		     s->module->is_vmlinux ? "" : ".ko");
+		return s;
 	}
-	s->preloaded = 0;
-	s->vmlinux   = is_vmlinux(mod->name);
-	s->kernel    = 0;
+
+	s->module = mod;
 	s->export    = export;
 	return s;
 }
 
-static void sym_update_crc(const char *name, struct module *mod,
-			   unsigned int crc, enum export export)
+static void sym_set_crc(const char *name, unsigned int crc)
 {
 	struct symbol *s = find_symbol(name);
 
-	if (!s) {
-		s = new_symbol(name, mod, export);
-		/* Don't complain when we find it later. */
-		s->preloaded = 1;
-	}
+	/*
+	 * Ignore stand-alone __crc_*, which might be auto-generated symbols
+	 * such as __*_veneer in ARM ELF.
+	 */
+	if (!s)
+		return;
+
 	s->crc = crc;
 	s->crc_valid = 1;
 }
 
-void *grab_file(const char *filename, unsigned long *size)
+static void *grab_file(const char *filename, size_t *size)
 {
 	struct stat st;
 	void *map = MAP_FAILED;
@@ -438,41 +474,7 @@
 	return map;
 }
 
-/**
-  * Return a copy of the next line in a mmap'ed file.
-  * spaces in the beginning of the line is trimmed away.
-  * Return a pointer to a static buffer.
-  **/
-char *get_next_line(unsigned long *pos, void *file, unsigned long size)
-{
-	static char line[4096];
-	int skip = 1;
-	size_t len = 0;
-	signed char *p = (signed char *)file + *pos;
-	char *s = line;
-
-	for (; *pos < size ; (*pos)++) {
-		if (skip && isspace(*p)) {
-			p++;
-			continue;
-		}
-		skip = 0;
-		if (*p != '\n' && (*pos < size)) {
-			len++;
-			*s++ = *p++;
-			if (len > 4095)
-				break; /* Too long, stop */
-		} else {
-			/* End of string */
-			*s = '\0';
-			return line;
-		}
-	}
-	/* End of buffer */
-	return NULL;
-}
-
-void release_file(void *file, unsigned long size)
+static void release_file(void *file, size_t size)
 {
 	munmap(file, size);
 }
@@ -528,9 +530,8 @@
 
 	/* Check if file offset is correct */
 	if (hdr->e_shoff > info->size) {
-		fatal("section header offset=%lu in file '%s' is bigger than "
-		      "filesize=%lu\n", (unsigned long)hdr->e_shoff,
-		      filename, info->size);
+		fatal("section header offset=%lu in file '%s' is bigger than filesize=%zu\n",
+		      (unsigned long)hdr->e_shoff, filename, info->size);
 		return 0;
 	}
 
@@ -593,10 +594,6 @@
 			info->export_unused_gpl_sec = i;
 		else if (strcmp(secname, "__ksymtab_gpl_future") == 0)
 			info->export_gpl_future_sec = i;
-		else if (strcmp(secname, "__ksymtab_strings") == 0)
-			info->ksymtab_strings = (void *)hdr +
-						sechdrs[i].sh_offset -
-						sechdrs[i].sh_addr;
 
 		if (sechdrs[i].sh_type == SHT_SYMTAB) {
 			unsigned int sh_link_idx;
@@ -679,38 +676,41 @@
 	return 0;
 }
 
-static void handle_modversions(struct module *mod, struct elf_info *info,
-			       Elf_Sym *sym, const char *symname)
+static void handle_modversion(const struct module *mod,
+			      const struct elf_info *info,
+			      const Elf_Sym *sym, const char *symname)
 {
 	unsigned int crc;
+
+	if (sym->st_shndx == SHN_UNDEF) {
+		warn("EXPORT symbol \"%s\" [%s%s] version generation failed, symbol will not be versioned.\n",
+		     symname, mod->name, mod->is_vmlinux ? "" : ".ko");
+		return;
+	}
+
+	if (sym->st_shndx == SHN_ABS) {
+		crc = sym->st_value;
+	} else {
+		unsigned int *crcp;
+
+		/* symbol points to the CRC in the ELF object */
+		crcp = sym_get_data(info, sym);
+		crc = TO_NATIVE(*crcp);
+	}
+	sym_set_crc(symname, crc);
+}
+
+static void handle_symbol(struct module *mod, struct elf_info *info,
+			  const Elf_Sym *sym, const char *symname)
+{
 	enum export export;
-	bool is_crc = false;
 	const char *name;
 
-	if ((!is_vmlinux(mod->name) || mod->is_dot_o) &&
-	    strstarts(symname, "__ksymtab"))
+	if (strstarts(symname, "__ksymtab"))
 		export = export_from_secname(info, get_secindex(info, sym));
 	else
 		export = export_from_sec(info, get_secindex(info, sym));
 
-	/* CRC'd symbol */
-	if (strstarts(symname, "__crc_")) {
-		is_crc = true;
-		crc = (unsigned int) sym->st_value;
-		if (sym->st_shndx != SHN_UNDEF && sym->st_shndx != SHN_ABS) {
-			unsigned int *crcp;
-
-			/* symbol points to the CRC in the ELF object */
-			crcp = (void *)info->hdr + sym->st_value +
-			       info->sechdrs[sym->st_shndx].sh_offset -
-			       (info->hdr->e_type != ET_REL ?
-				info->sechdrs[sym->st_shndx].sh_addr : 0);
-			crc = TO_NATIVE(*crcp);
-		}
-		sym_update_crc(symname + strlen("__crc_"), mod, crc,
-				export);
-	}
-
 	switch (sym->st_shndx) {
 	case SHN_COMMON:
 		if (strstarts(symname, "__gnu_lto_")) {
@@ -725,12 +725,6 @@
 			break;
 		if (ignore_undef_symbol(info, symname))
 			break;
-/* cope with newer glibc (2.3.4 or higher) STT_ definition in elf.h */
-#if defined(STT_REGISTER) || defined(STT_SPARC_REGISTER)
-/* add compatibility with older glibc */
-#ifndef STT_SPARC_REGISTER
-#define STT_SPARC_REGISTER STT_REGISTER
-#endif
 		if (info->hdr->e_machine == EM_SPARC ||
 		    info->hdr->e_machine == EM_SPARCV9) {
 			/* Ignore register directives. */
@@ -743,13 +737,7 @@
 				symname = munged;
 			}
 		}
-#endif
 
-		if (is_crc) {
-			const char *e = is_vmlinux(mod->name) ?"":".ko";
-			warn("EXPORT symbol \"%s\" [%s%s] version generation failed, symbol will not be versioned.\n",
-			     symname + strlen("__crc_"), mod->name, e);
-		}
 		mod->unres = alloc_symbol(symname,
 					  ELF_ST_BIND(sym->st_info) == STB_WEAK,
 					  mod->unres);
@@ -1764,11 +1752,7 @@
 static unsigned int *reloc_location(struct elf_info *elf,
 				    Elf_Shdr *sechdr, Elf_Rela *r)
 {
-	Elf_Shdr *sechdrs = elf->sechdrs;
-	int section = sechdr->sh_info;
-
-	return (void *)elf->hdr + sechdrs[section].sh_offset +
-		r->r_offset;
+	return sym_get_data_by_offset(elf, sechdr->sh_info, r->r_offset);
 }
 
 static int addend_386_rel(struct elf_info *elf, Elf_Shdr *sechdr, Elf_Rela *r)
@@ -2017,51 +2001,57 @@
 	if (!parse_elf(&info, modname))
 		return;
 
-	mod = new_module(modname);
+	{
+		char *tmp;
 
-	/* When there's no vmlinux, don't print warnings about
-	 * unresolved symbols (since there'll be too many ;) */
-	if (is_vmlinux(modname)) {
-		have_vmlinux = 1;
-		mod->skip = 1;
+		/* strip trailing .o */
+		tmp = NOFAIL(strdup(modname));
+		tmp[strlen(tmp) - 2] = '\0';
+		mod = new_module(tmp);
+		free(tmp);
 	}
 
-	license = get_modinfo(&info, "license");
-	if (!license && !is_vmlinux(modname))
-		warn("modpost: missing MODULE_LICENSE() in %s\n"
-		     "see include/linux/module.h for "
-		     "more information\n", modname);
-	while (license) {
-		if (license_is_gpl_compatible(license))
-			mod->gpl_compatible = 1;
-		else {
-			mod->gpl_compatible = 0;
-			break;
+	if (!mod->is_vmlinux) {
+		license = get_modinfo(&info, "license");
+		if (!license)
+			warn("missing MODULE_LICENSE() in %s\n", modname);
+		while (license) {
+			if (license_is_gpl_compatible(license))
+				mod->gpl_compatible = 1;
+			else {
+				mod->gpl_compatible = 0;
+				break;
+			}
+			license = get_next_modinfo(&info, "license", license);
 		}
-		license = get_next_modinfo(&info, "license", license);
-	}
 
-	namespace = get_modinfo(&info, "import_ns");
-	while (namespace) {
-		add_namespace(&mod->imported_namespaces, namespace);
-		namespace = get_next_modinfo(&info, "import_ns", namespace);
+		namespace = get_modinfo(&info, "import_ns");
+		while (namespace) {
+			add_namespace(&mod->imported_namespaces, namespace);
+			namespace = get_next_modinfo(&info, "import_ns",
+						     namespace);
+		}
 	}
 
 	for (sym = info.symtab_start; sym < info.symtab_stop; sym++) {
 		symname = remove_dot(info.strtab + sym->st_name);
 
-		handle_modversions(mod, &info, sym, symname);
+		handle_symbol(mod, &info, sym, symname);
 		handle_moddevtable(mod, &info, sym, symname);
 	}
 
-	/* Apply symbol namespaces from __kstrtabns_<symbol> entries. */
 	for (sym = info.symtab_start; sym < info.symtab_stop; sym++) {
 		symname = remove_dot(info.strtab + sym->st_name);
 
+		/* Apply symbol namespaces from __kstrtabns_<symbol> entries. */
 		if (strstarts(symname, "__kstrtabns_"))
 			sym_update_namespace(symname + strlen("__kstrtabns_"),
 					     namespace_from_kstrtabns(&info,
 								      sym));
+
+		if (strstarts(symname, "__crc_"))
+			handle_modversion(mod, &info, sym,
+					  symname + strlen("__crc_"));
 	}
 
 	// check for static EXPORT_SYMBOL_* functions && global vars
@@ -2078,16 +2068,14 @@
 		}
 	}
 
-	if (!is_vmlinux(modname) || vmlinux_section_warnings)
-		check_sec_ref(mod, modname, &info);
+	check_sec_ref(mod, modname, &info);
 
-	version = get_modinfo(&info, "version");
-	if (version)
-		maybe_frob_rcs_version(modname, version, info.modinfo,
-				       version - (char *)info.hdr);
-	if (version || (all_versions && !is_vmlinux(modname)))
-		get_src_version(modname, mod->srcversion,
-				sizeof(mod->srcversion)-1);
+	if (!mod->is_vmlinux) {
+		version = get_modinfo(&info, "version");
+		if (version || all_versions)
+			get_src_version(modname, mod->srcversion,
+					sizeof(mod->srcversion) - 1);
+	}
 
 	parse_elf_finish(&info);
 
@@ -2151,20 +2139,18 @@
 
 static void check_for_gpl_usage(enum export exp, const char *m, const char *s)
 {
-	const char *e = is_vmlinux(m) ?"":".ko";
-
 	switch (exp) {
 	case export_gpl:
-		fatal("modpost: GPL-incompatible module %s%s "
-		      "uses GPL-only symbol '%s'\n", m, e, s);
+		fatal("GPL-incompatible module %s.ko uses GPL-only symbol '%s'\n",
+		      m, s);
 		break;
 	case export_unused_gpl:
-		fatal("modpost: GPL-incompatible module %s%s "
-		      "uses GPL-only symbol marked UNUSED '%s'\n", m, e, s);
+		fatal("GPL-incompatible module %s.ko uses GPL-only symbol marked UNUSED '%s'\n",
+		      m, s);
 		break;
 	case export_gpl_future:
-		warn("modpost: GPL-incompatible module %s%s "
-		      "uses future GPL-only symbol '%s'\n", m, e, s);
+		warn("GPL-incompatible module %s.ko uses future GPL-only symbol '%s'\n",
+		     m, s);
 		break;
 	case export_plain:
 	case export_unused:
@@ -2176,13 +2162,11 @@
 
 static void check_for_unused(enum export exp, const char *m, const char *s)
 {
-	const char *e = is_vmlinux(m) ?"":".ko";
-
 	switch (exp) {
 	case export_unused:
 	case export_unused_gpl:
-		warn("modpost: module %s%s "
-		      "uses symbol '%s' marked UNUSED\n", m, e, s);
+		warn("module %s.ko uses symbol '%s' marked UNUSED\n",
+		     m, s);
 		break;
 	default:
 		/* ignore */
@@ -2200,14 +2184,11 @@
 		exp = find_symbol(s->name);
 		if (!exp || exp->module == mod) {
 			if (have_vmlinux && !s->weak) {
-				if (warn_unresolved) {
-					warn("\"%s\" [%s.ko] undefined!\n",
-					     s->name, mod->name);
-				} else {
-					merror("\"%s\" [%s.ko] undefined!\n",
-					       s->name, mod->name);
+				modpost_log(warn_unresolved ? LOG_WARN : LOG_ERROR,
+					    "\"%s\" [%s.ko] undefined!\n",
+					    s->name, mod->name);
+				if (!warn_unresolved)
 					err = 1;
-				}
 			}
 			continue;
 		}
@@ -2217,15 +2198,14 @@
 		else
 			basename = mod->name;
 
-		if (exp->namespace) {
-			add_namespace(&mod->required_namespaces,
-				      exp->namespace);
-
-			if (!write_namespace_deps &&
-			    !module_imports_namespace(mod, exp->namespace)) {
-				warn("module %s uses symbol %s from namespace %s, but does not import it.\n",
-				     basename, exp->name, exp->namespace);
-			}
+		if (exp->namespace &&
+		    !module_imports_namespace(mod, exp->namespace)) {
+			modpost_log(allow_missing_ns_imports ? LOG_WARN : LOG_ERROR,
+				    "module %s uses symbol %s from namespace %s, but does not import it.\n",
+				    basename, exp->name, exp->namespace);
+			if (!allow_missing_ns_imports)
+				err = 1;
+			add_namespace(&mod->missing_namespaces, exp->namespace);
 		}
 
 		if (!mod->gpl_compatible)
@@ -2258,8 +2238,13 @@
  **/
 static void add_header(struct buffer *b, struct module *mod)
 {
-	buf_printf(b, "#include <linux/build-salt.h>\n");
 	buf_printf(b, "#include <linux/module.h>\n");
+	/*
+	 * Include build-salt.h after module.h in order to
+	 * inherit the definitions.
+	 */
+	buf_printf(b, "#define INCLUDE_VERMAGIC\n");
+	buf_printf(b, "#include <linux/build-salt.h>\n");
 	buf_printf(b, "#include <linux/vermagic.h>\n");
 	buf_printf(b, "#include <linux/compiler.h>\n");
 	buf_printf(b, "\n");
@@ -2269,7 +2254,7 @@
 	buf_printf(b, "MODULE_INFO(name, KBUILD_MODNAME);\n");
 	buf_printf(b, "\n");
 	buf_printf(b, "__visible struct module __this_module\n");
-	buf_printf(b, "__section(.gnu.linkonce.this_module) = {\n");
+	buf_printf(b, "__section(\".gnu.linkonce.this_module\") = {\n");
 	buf_printf(b, "\t.name = KBUILD_MODNAME,\n");
 	if (mod->has_init)
 		buf_printf(b, "\t.init = init_module,\n");
@@ -2323,7 +2308,7 @@
 
 	buf_printf(b, "\n");
 	buf_printf(b, "static const struct modversion_info ____versions[]\n");
-	buf_printf(b, "__used __section(__versions) = {\n");
+	buf_printf(b, "__used __section(\"__versions\") = {\n");
 
 	for (s = mod->unres; s; s = s->next) {
 		if (!s->module)
@@ -2356,7 +2341,7 @@
 	/* Clear ->seen flag of modules that own symbols needed by this. */
 	for (s = mod->unres; s; s = s->next)
 		if (s->module)
-			s->module->seen = is_vmlinux(s->module->name);
+			s->module->seen = s->module->is_vmlinux;
 
 	buf_printf(b, "\n");
 	buf_printf(b, "MODULE_INFO(depends, \"");
@@ -2389,6 +2374,25 @@
 	}
 }
 
+static void write_buf(struct buffer *b, const char *fname)
+{
+	FILE *file;
+
+	file = fopen(fname, "w");
+	if (!file) {
+		perror(fname);
+		exit(1);
+	}
+	if (fwrite(b->p, 1, b->pos, file) != b->pos) {
+		perror(fname);
+		exit(1);
+	}
+	if (fclose(file) != 0) {
+		perror(fname);
+		exit(1);
+	}
+}
+
 static void write_if_changed(struct buffer *b, const char *fname)
 {
 	char *tmp;
@@ -2421,32 +2425,24 @@
  close_write:
 	fclose(file);
  write:
-	file = fopen(fname, "w");
-	if (!file) {
-		perror(fname);
-		exit(1);
-	}
-	if (fwrite(b->p, 1, b->pos, file) != b->pos) {
-		perror(fname);
-		exit(1);
-	}
-	fclose(file);
+	write_buf(b, fname);
 }
 
 /* parse Module.symvers file. line format:
  * 0x12345678<tab>symbol<tab>module<tab>export<tab>namespace
  **/
-static void read_dump(const char *fname, unsigned int kernel)
+static void read_dump(const char *fname)
 {
-	unsigned long size, pos = 0;
-	void *file = grab_file(fname, &size);
-	char *line;
+	char *buf, *pos, *line;
 
-	if (!file)
+	buf = read_text_file(fname);
+	if (!buf)
 		/* No symbol versions, silently ignore */
 		return;
 
-	while ((line = get_next_line(&pos, file, size))) {
+	pos = buf;
+
+	while ((line = get_line(&pos))) {
 		char *symname, *namespace, *modname, *d, *export;
 		unsigned int crc;
 		struct module *mod;
@@ -2470,38 +2466,21 @@
 			goto fail;
 		mod = find_module(modname);
 		if (!mod) {
-			if (is_vmlinux(modname))
-				have_vmlinux = 1;
 			mod = new_module(modname);
-			mod->skip = 1;
+			mod->from_dump = 1;
 		}
 		s = sym_add_exported(symname, mod, export_no(export));
-		s->kernel    = kernel;
-		s->preloaded = 1;
 		s->is_static = 0;
-		sym_update_crc(symname, mod, crc, export_no(export));
+		sym_set_crc(symname, crc);
 		sym_update_namespace(symname, namespace);
 	}
-	release_file(file, size);
+	free(buf);
 	return;
 fail:
-	release_file(file, size);
+	free(buf);
 	fatal("parse error in symbol dump file\n");
 }
 
-/* For normal builds always dump all symbols.
- * For external modules only dump symbols
- * that are not read from kernel Module.symvers.
- **/
-static int dump_sym(struct symbol *sym)
-{
-	if (!external_module)
-		return 1;
-	if (sym->vmlinux || sym->kernel)
-		return 0;
-	return 1;
-}
-
 static void write_dump(const char *fname)
 {
 	struct buffer buf = { };
@@ -2512,7 +2491,7 @@
 	for (n = 0; n < SYMBOL_HASH_SIZE ; n++) {
 		symbol = symbolhash[n];
 		while (symbol) {
-			if (dump_sym(symbol)) {
+			if (!symbol->module->from_dump) {
 				namespace = symbol->namespace;
 				buf_printf(&buf, "0x%08x\t%s\t%s\t%s\t%s\n",
 					   symbol->crc, symbol->name,
@@ -2523,37 +2502,35 @@
 			symbol = symbol->next;
 		}
 	}
-	write_if_changed(&buf, fname);
+	write_buf(&buf, fname);
 	free(buf.p);
 }
 
-static void write_namespace_deps_files(void)
+static void write_namespace_deps_files(const char *fname)
 {
 	struct module *mod;
 	struct namespace_list *ns;
 	struct buffer ns_deps_buf = {};
 
 	for (mod = modules; mod; mod = mod->next) {
-		char fname[PATH_MAX];
 
-		if (mod->skip)
+		if (mod->from_dump || !mod->missing_namespaces)
 			continue;
 
-		ns_deps_buf.pos = 0;
+		buf_printf(&ns_deps_buf, "%s.ko:", mod->name);
 
-		for (ns = mod->required_namespaces; ns; ns = ns->next)
-			buf_printf(&ns_deps_buf, "%s\n", ns->namespace);
+		for (ns = mod->missing_namespaces; ns; ns = ns->next)
+			buf_printf(&ns_deps_buf, " %s", ns->namespace);
 
-		if (ns_deps_buf.pos == 0)
-			continue;
-
-		sprintf(fname, "%s.ns_deps", mod->name);
-		write_if_changed(&ns_deps_buf, fname);
+		buf_printf(&ns_deps_buf, "\n");
 	}
+
+	write_if_changed(&ns_deps_buf, fname);
+	free(ns_deps_buf.p);
 }
 
-struct ext_sym_list {
-	struct ext_sym_list *next;
+struct dump_list {
+	struct dump_list *next;
 	const char *file;
 };
 
@@ -2561,30 +2538,24 @@
 {
 	struct module *mod;
 	struct buffer buf = { };
-	char *kernel_read = NULL, *module_read = NULL;
+	char *missing_namespace_deps = NULL;
 	char *dump_write = NULL, *files_source = NULL;
 	int opt;
 	int err;
 	int n;
-	struct ext_sym_list *extsym_iter;
-	struct ext_sym_list *extsym_start = NULL;
+	struct dump_list *dump_read_start = NULL;
+	struct dump_list **dump_read_iter = &dump_read_start;
 
-	while ((opt = getopt(argc, argv, "i:I:e:mnsT:o:awEd")) != -1) {
+	while ((opt = getopt(argc, argv, "ei:mnT:o:awENd:")) != -1) {
 		switch (opt) {
-		case 'i':
-			kernel_read = optarg;
-			break;
-		case 'I':
-			module_read = optarg;
-			external_module = 1;
-			break;
 		case 'e':
 			external_module = 1;
-			extsym_iter =
-			   NOFAIL(malloc(sizeof(*extsym_iter)));
-			extsym_iter->next = extsym_start;
-			extsym_iter->file = optarg;
-			extsym_start = extsym_iter;
+			break;
+		case 'i':
+			*dump_read_iter =
+				NOFAIL(calloc(1, sizeof(**dump_read_iter)));
+			(*dump_read_iter)->file = optarg;
+			dump_read_iter = &(*dump_read_iter)->next;
 			break;
 		case 'm':
 			modversions = 1;
@@ -2598,9 +2569,6 @@
 		case 'a':
 			all_versions = 1;
 			break;
-		case 's':
-			vmlinux_section_warnings = 0;
-			break;
 		case 'T':
 			files_source = optarg;
 			break;
@@ -2610,23 +2578,24 @@
 		case 'E':
 			sec_mismatch_fatal = 1;
 			break;
+		case 'N':
+			allow_missing_ns_imports = 1;
+			break;
 		case 'd':
-			write_namespace_deps = 1;
+			missing_namespace_deps = optarg;
 			break;
 		default:
 			exit(1);
 		}
 	}
 
-	if (kernel_read)
-		read_dump(kernel_read, 1);
-	if (module_read)
-		read_dump(module_read, 0);
-	while (extsym_start) {
-		read_dump(extsym_start->file, 0);
-		extsym_iter = extsym_start->next;
-		free(extsym_start);
-		extsym_start = extsym_iter;
+	while (dump_read_start) {
+		struct dump_list *tmp;
+
+		read_dump(dump_read_start->file);
+		tmp = dump_read_start->next;
+		free(dump_read_start);
+		dump_read_start = tmp;
 	}
 
 	while (optind < argc)
@@ -2635,20 +2604,25 @@
 	if (files_source)
 		read_symbols_from_files(files_source);
 
+	/*
+	 * When there's no vmlinux, don't print warnings about
+	 * unresolved symbols (since there'll be too many ;)
+	 */
+	if (!have_vmlinux)
+		warn("Symbol info of vmlinux is missing. Unresolved symbol check will be entirely skipped.\n");
+
 	err = 0;
 
 	for (mod = modules; mod; mod = mod->next) {
 		char fname[PATH_MAX];
 
-		if (mod->skip)
+		if (mod->is_vmlinux || mod->from_dump)
 			continue;
 
 		buf.pos = 0;
 
 		err |= check_modname_len(mod);
 		err |= check_exports(mod);
-		if (write_namespace_deps)
-			continue;
 
 		add_header(&buf, mod);
 		add_intree_flag(&buf, !external_module);
@@ -2663,27 +2637,18 @@
 		write_if_changed(&buf, fname);
 	}
 
-	if (write_namespace_deps) {
-		write_namespace_deps_files();
-		return 0;
-	}
+	if (missing_namespace_deps)
+		write_namespace_deps_files(missing_namespace_deps);
 
 	if (dump_write)
 		write_dump(dump_write);
 	if (sec_mismatch_count && sec_mismatch_fatal)
-		fatal("modpost: Section mismatches detected.\n"
+		fatal("Section mismatches detected.\n"
 		      "Set CONFIG_SECTION_MISMATCH_WARN_ONLY=y to allow them.\n");
 	for (n = 0; n < SYMBOL_HASH_SIZE; n++) {
 		struct symbol *s;
 
 		for (s = symbolhash[n]; s; s = s->next) {
-			/*
-			 * Do not check "vmlinux". This avoids the same warnings
-			 * shown twice, and false-positives for ARCH=um.
-			 */
-			if (is_vmlinux(s->module->name) && !s->module->is_dot_o)
-				continue;
-
 			if (s->is_static)
 				warn("\"%s\" [%s] is a static %s\n",
 				     s->name, s->module->name,
diff --git a/scripts/mod/modpost.h b/scripts/mod/modpost.h
index ad271bc..3aa0527 100644
--- a/scripts/mod/modpost.h
+++ b/scripts/mod/modpost.h
@@ -111,29 +111,29 @@
 
 struct namespace_list {
 	struct namespace_list *next;
-	char namespace[0];
+	char namespace[];
 };
 
 struct module {
 	struct module *next;
-	const char *name;
 	int gpl_compatible;
 	struct symbol *unres;
+	int from_dump;  /* 1 if module was loaded from *.symvers */
+	int is_vmlinux;
 	int seen;
-	int skip;
 	int has_init;
 	int has_cleanup;
 	struct buffer dev_table_buf;
 	char	     srcversion[25];
-	int is_dot_o;
-	// Required namespace dependencies
-	struct namespace_list *required_namespaces;
+	// Missing namespace dependencies
+	struct namespace_list *missing_namespaces;
 	// Actual imported namespaces
 	struct namespace_list *imported_namespaces;
+	char name[];
 };
 
 struct elf_info {
-	unsigned long size;
+	size_t size;
 	Elf_Ehdr     *hdr;
 	Elf_Shdr     *sechdrs;
 	Elf_Sym      *symtab_start;
@@ -143,7 +143,6 @@
 	Elf_Section  export_gpl_sec;
 	Elf_Section  export_unused_gpl_sec;
 	Elf_Section  export_gpl_future_sec;
-	char	     *ksymtab_strings;
 	char         *strtab;
 	char	     *modinfo;
 	unsigned int modinfo_len;
@@ -188,17 +187,20 @@
 void add_moddevtable(struct buffer *buf, struct module *mod);
 
 /* sumversion.c */
-void maybe_frob_rcs_version(const char *modfilename,
-			    char *version,
-			    void *modinfo,
-			    unsigned long modinfo_offset);
 void get_src_version(const char *modname, char sum[], unsigned sumlen);
 
 /* from modpost.c */
-void *grab_file(const char *filename, unsigned long *size);
-char* get_next_line(unsigned long *pos, void *file, unsigned long size);
-void release_file(void *file, unsigned long size);
+char *read_text_file(const char *filename);
+char *get_line(char **stringp);
 
-void fatal(const char *fmt, ...);
-void warn(const char *fmt, ...);
-void merror(const char *fmt, ...);
+enum loglevel {
+	LOG_WARN,
+	LOG_ERROR,
+	LOG_FATAL
+};
+
+void modpost_log(enum loglevel loglevel, const char *fmt, ...);
+
+#define warn(fmt, args...)	modpost_log(LOG_WARN, fmt, ##args)
+#define merror(fmt, args...)	modpost_log(LOG_ERROR, fmt, ##args)
+#define fatal(fmt, args...)	modpost_log(LOG_FATAL, fmt, ##args)
diff --git a/scripts/mod/sumversion.c b/scripts/mod/sumversion.c
index 6306202..d587f40 100644
--- a/scripts/mod/sumversion.c
+++ b/scripts/mod/sumversion.c
@@ -258,9 +258,8 @@
 	char *file;
 	unsigned long i, len;
 
-	file = grab_file(fname, &len);
-	if (!file)
-		return 0;
+	file = read_text_file(fname);
+	len = strlen(file);
 
 	for (i = 0; i < len; i++) {
 		/* Collapse and ignore \ and CR. */
@@ -287,7 +286,7 @@
 
 		add_char(file[i], md);
 	}
-	release_file(file, len);
+	free(file);
 	return 1;
 }
 /* Check whether the file is a static library or not */
@@ -304,9 +303,8 @@
  * to figure out source files. */
 static int parse_source_files(const char *objfile, struct md4_ctx *md)
 {
-	char *cmd, *file, *line, *dir;
+	char *cmd, *file, *line, *dir, *pos;
 	const char *base;
-	unsigned long flen, pos = 0;
 	int dirlen, ret = 0, check_files = 0;
 
 	cmd = NOFAIL(malloc(strlen(objfile) + sizeof("..cmd")));
@@ -324,14 +322,12 @@
 	strncpy(dir, objfile, dirlen);
 	dir[dirlen] = '\0';
 
-	file = grab_file(cmd, &flen);
-	if (!file) {
-		warn("could not find %s for %s\n", cmd, objfile);
-		goto out;
-	}
+	file = read_text_file(cmd);
+
+	pos = file;
 
 	/* Sum all files in the same dir or subdirs. */
-	while ((line = get_next_line(&pos, file, flen)) != NULL) {
+	while ((line = get_line(&pos))) {
 		char* p = line;
 
 		if (strncmp(line, "source_", sizeof("source_")-1) == 0) {
@@ -382,8 +378,7 @@
 	/* Everyone parsed OK */
 	ret = 1;
 out_file:
-	release_file(file, flen);
-out:
+	free(file);
 	free(dir);
 	free(cmd);
 	return ret;
@@ -392,106 +387,34 @@
 /* Calc and record src checksum. */
 void get_src_version(const char *modname, char sum[], unsigned sumlen)
 {
-	void *file;
-	unsigned long len;
+	char *buf, *pos, *firstline;
 	struct md4_ctx md;
-	char *sources, *end, *fname;
+	char *fname;
 	char filelist[PATH_MAX + 1];
 
 	/* objects for a module are listed in the first line of *.mod file. */
 	snprintf(filelist, sizeof(filelist), "%.*smod",
 		 (int)strlen(modname) - 1, modname);
 
-	file = grab_file(filelist, &len);
-	if (!file)
-		/* not a module or .mod file missing - ignore */
-		return;
+	buf = read_text_file(filelist);
 
-	sources = file;
-
-	end = strchr(sources, '\n');
-	if (!end) {
+	pos = buf;
+	firstline = get_line(&pos);
+	if (!firstline) {
 		warn("bad ending versions file for %s\n", modname);
-		goto release;
+		goto free;
 	}
-	*end = '\0';
 
 	md4_init(&md);
-	while ((fname = strsep(&sources, " ")) != NULL) {
+	while ((fname = strsep(&firstline, " "))) {
 		if (!*fname)
 			continue;
 		if (!(is_static_library(fname)) &&
 				!parse_source_files(fname, &md))
-			goto release;
+			goto free;
 	}
 
 	md4_final_ascii(&md, sum, sumlen);
-release:
-	release_file(file, len);
-}
-
-static void write_version(const char *filename, const char *sum,
-			  unsigned long offset)
-{
-	int fd;
-
-	fd = open(filename, O_RDWR);
-	if (fd < 0) {
-		warn("changing sum in %s failed: %s\n",
-			filename, strerror(errno));
-		return;
-	}
-
-	if (lseek(fd, offset, SEEK_SET) == (off_t)-1) {
-		warn("changing sum in %s:%lu failed: %s\n",
-			filename, offset, strerror(errno));
-		goto out;
-	}
-
-	if (write(fd, sum, strlen(sum)+1) != strlen(sum)+1) {
-		warn("writing sum in %s failed: %s\n",
-			filename, strerror(errno));
-		goto out;
-	}
-out:
-	close(fd);
-}
-
-static int strip_rcs_crap(char *version)
-{
-	unsigned int len, full_len;
-
-	if (strncmp(version, "$Revision", strlen("$Revision")) != 0)
-		return 0;
-
-	/* Space for version string follows. */
-	full_len = strlen(version) + strlen(version + strlen(version) + 1) + 2;
-
-	/* Move string to start with version number: prefix will be
-	 * $Revision$ or $Revision: */
-	len = strlen("$Revision");
-	if (version[len] == ':' || version[len] == '$')
-		len++;
-	while (isspace(version[len]))
-		len++;
-	memmove(version, version+len, full_len-len);
-	full_len -= len;
-
-	/* Preserve up to next whitespace. */
-	len = 0;
-	while (version[len] && !isspace(version[len]))
-		len++;
-	memmove(version + len, version + strlen(version),
-		full_len - strlen(version));
-	return 1;
-}
-
-/* Clean up RCS-style version numbers. */
-void maybe_frob_rcs_version(const char *modfilename,
-			    char *version,
-			    void *modinfo,
-			    unsigned long version_offset)
-{
-	if (strip_rcs_crap(version))
-		write_version(modfilename, version, version_offset);
+free:
+	free(buf);
 }
diff --git a/scripts/module-common.lds b/scripts/module.lds.S
similarity index 60%
rename from scripts/module-common.lds
rename to scripts/module.lds.S
index d61b9e8..c5f1219 100644
--- a/scripts/module-common.lds
+++ b/scripts/module.lds.S
@@ -23,4 +23,33 @@
 	.init_array		0 : ALIGN(8) { *(SORT(.init_array.*)) *(.init_array) }
 
 	__jump_table		0 : ALIGN(8) { KEEP(*(__jump_table)) }
+
+	__patchable_function_entries : { *(__patchable_function_entries) }
+
+#ifdef CONFIG_LTO_CLANG
+	/*
+	 * With CONFIG_LTO_CLANG, LLD always enables -fdata-sections and
+	 * -ffunction-sections, which increases the size of the final module.
+	 * Merge the split sections in the final binary.
+	 */
+	.bss : {
+		*(.bss .bss.[0-9a-zA-Z_]*)
+		*(.bss..L*)
+	}
+
+	.data : {
+		*(.data .data.[0-9a-zA-Z_]*)
+		*(.data..L*)
+	}
+
+	.rodata : {
+		*(.rodata .rodata.[0-9a-zA-Z_]*)
+		*(.rodata..L*)
+	}
+
+	.text : { *(.text .text.[0-9a-zA-Z_]*) }
+#endif
 }
+
+/* bring in arch-specific sections */
+#include <asm/module.lds.h>
diff --git a/scripts/modules-check.sh b/scripts/modules-check.sh
index f51f446..43de226 100755
--- a/scripts/modules-check.sh
+++ b/scripts/modules-check.sh
@@ -3,14 +3,24 @@
 
 set -e
 
+if [ $# != 1 ]; then
+	echo "Usage: $0 <modules.order>" >& 2
+	exit 1
+fi
+
+exit_code=0
+
 # Check uniqueness of module names
 check_same_name_modules()
 {
-	for m in $(sed 's:.*/::' modules.order | sort | uniq -d)
+	for m in $(sed 's:.*/::' $1 | sort | uniq -d)
 	do
-		echo "warning: same module names found:" >&2
+		echo "error: the following would cause module name conflict:" >&2
 		sed -n "/\/$m/s:^:  :p" modules.order >&2
+		exit_code=1
 	done
 }
 
-check_same_name_modules
+check_same_name_modules "$1"
+
+exit $exit_code
diff --git a/scripts/namespace.pl b/scripts/namespace.pl
deleted file mode 100755
index 1da7bca..0000000
--- a/scripts/namespace.pl
+++ /dev/null
@@ -1,473 +0,0 @@
-#!/usr/bin/env perl
-#
-#	namespace.pl.  Mon Aug 30 2004
-#
-#	Perform a name space analysis on the linux kernel.
-#
-#	Copyright Keith Owens <kaos@ocs.com.au>.  GPL.
-#
-#	Invoke by changing directory to the top of the kernel object
-#	tree then namespace.pl, no parameters.
-#
-#	Tuned for 2.1.x kernels with the new module handling, it will
-#	work with 2.0 kernels as well.
-#
-#	Last change 2.6.9-rc1, adding support for separate source and object
-#	trees.
-#
-#	The source must be compiled/assembled first, the object files
-#	are the primary input to this script.  Incomplete or missing
-#	objects will result in a flawed analysis.  Compile both vmlinux
-#	and modules.
-#
-#	Even with complete objects, treat the result of the analysis
-#	with caution.  Some external references are only used by
-#	certain architectures, others with certain combinations of
-#	configuration parameters.  Ideally the source should include
-#	something like
-#
-#	#ifndef CONFIG_...
-#	static
-#	#endif
-#	symbol_definition;
-#
-#	so the symbols are defined as static unless a particular
-#	CONFIG_... requires it to be external.
-#
-#	A symbol that is suffixed with '(export only)' has these properties
-#
-#	* It is global.
-#	* It is marked EXPORT_SYMBOL or EXPORT_SYMBOL_GPL, either in the same
-#	  source file or a different source file.
-#	* Given the current .config, nothing uses the symbol.
-#
-#	The symbol is a candidate for conversion to static, plus removal of the
-#	export.  But be careful that a different .config might use the symbol.
-#
-#
-#	Name space analysis and cleanup is an iterative process.  You cannot
-#	expect to find all the problems in a single pass.
-#
-#	* Identify possibly unnecessary global declarations, verify that they
-#	  really are unnecessary and change them to static.
-#	* Compile and fix up gcc warnings about static, removing dead symbols
-#	  as necessary.
-#	* make clean and rebuild with different configs (especially
-#	  CONFIG_MODULES=n) to see which symbols are being defined when the
-#	  config does not require them.  These symbols bloat the kernel object
-#	  for no good reason, which is frustrating for embedded systems.
-#	* Wrap config sensitive symbols in #ifdef CONFIG_foo, as long as the
-#	  code does not get too ugly.
-#	* Repeat the name space analysis until you can live with with the
-#	  result.
-#
-
-use warnings;
-use strict;
-use File::Find;
-use File::Spec;
-
-my $nm = ($ENV{'NM'} || "nm") . " -p";
-my $objdump = ($ENV{'OBJDUMP'} || "objdump") . " -s -j .comment";
-my $srctree = File::Spec->curdir();
-my $objtree = File::Spec->curdir();
-$srctree = File::Spec->rel2abs($ENV{'srctree'}) if (exists($ENV{'srctree'}));
-$objtree = File::Spec->rel2abs($ENV{'objtree'}) if (exists($ENV{'objtree'}));
-
-if ($#ARGV != -1) {
-	print STDERR "usage: $0 takes no parameters\n";
-	die("giving up\n");
-}
-
-my %nmdata = ();	# nm data for each object
-my %def = ();		# all definitions for each name
-my %ksymtab = ();	# names that appear in __ksymtab_
-my %ref = ();		# $ref{$name} exists if there is a true external reference to $name
-my %export = ();	# $export{$name} exists if there is an EXPORT_... of $name
-
-my %nmexception = (
-    'fs/ext3/bitmap'			=> 1,
-    'fs/ext4/bitmap'			=> 1,
-    'arch/x86/lib/thunk_32'		=> 1,
-    'arch/x86/lib/cmpxchg'		=> 1,
-    'arch/x86/vdso/vdso32/note'		=> 1,
-    'lib/irq_regs'			=> 1,
-    'usr/initramfs_data'		=> 1,
-    'drivers/scsi/aic94xx/aic94xx_dump'	=> 1,
-    'drivers/scsi/libsas/sas_dump'	=> 1,
-    'lib/dec_and_lock'			=> 1,
-    'drivers/ide/ide-probe-mini'	=> 1,
-    'usr/initramfs_data'		=> 1,
-    'drivers/acpi/acpia/exdump'		=> 1,
-    'drivers/acpi/acpia/rsdump'		=> 1,
-    'drivers/acpi/acpia/nsdumpdv'	=> 1,
-    'drivers/acpi/acpia/nsdump'		=> 1,
-    'arch/ia64/sn/kernel/sn2/io'	=> 1,
-    'arch/ia64/kernel/gate-data'	=> 1,
-    'security/capability'		=> 1,
-    'fs/ntfs/sysctl'			=> 1,
-    'fs/jfs/jfs_debug'			=> 1,
-);
-
-my %nameexception = (
-    'mod_use_count_'	 => 1,
-    '__initramfs_end'	=> 1,
-    '__initramfs_start'	=> 1,
-    '_einittext'	=> 1,
-    '_sinittext'	=> 1,
-    'kallsyms_names'	=> 1,
-    'kallsyms_num_syms'	=> 1,
-    'kallsyms_addresses'=> 1,
-    'kallsyms_offsets'	=> 1,
-    'kallsyms_relative_base'=> 1,
-    '__this_module'	=> 1,
-    '_etext'		=> 1,
-    '_edata'		=> 1,
-    '_end'		=> 1,
-    '__bss_start'	=> 1,
-    '_text'		=> 1,
-    '_stext'		=> 1,
-    '__gp'		=> 1,
-    'ia64_unw_start'	=> 1,
-    'ia64_unw_end'	=> 1,
-    '__init_begin'	=> 1,
-    '__init_end'	=> 1,
-    '__bss_stop'	=> 1,
-    '__nosave_begin'	=> 1,
-    '__nosave_end'	=> 1,
-    'pg0'		=> 1,
-    'vdso_enabled'	=> 1,
-    '__stack_chk_fail'  => 1,
-    'VDSO32_PRELINK'	=> 1,
-    'VDSO32_vsyscall'	=> 1,
-    'VDSO32_rt_sigreturn'=>1,
-    'VDSO32_sigreturn'	=> 1,
-);
-
-
-&find(\&linux_objects, '.');	# find the objects and do_nm on them
-&list_multiply_defined();
-&resolve_external_references();
-&list_extra_externals();
-
-exit(0);
-
-sub linux_objects
-{
-	# Select objects, ignoring objects which are only created by
-	# merging other objects.  Also ignore all of modules, scripts
-	# and compressed.  Most conglomerate objects are handled by do_nm,
-	# this list only contains the special cases.  These include objects
-	# that are linked from just one other object and objects for which
-	# there is really no permanent source file.
-	my $basename = $_;
-	$_ = $File::Find::name;
-	s:^\./::;
-	if (/.*\.o$/ &&
-		! (
-		m:/built-in.a$:
-		|| m:arch/x86/vdso/:
-		|| m:arch/x86/boot/:
-		|| m:arch/ia64/ia32/ia32.o$:
-		|| m:arch/ia64/kernel/gate-syms.o$:
-		|| m:arch/ia64/lib/__divdi3.o$:
-		|| m:arch/ia64/lib/__divsi3.o$:
-		|| m:arch/ia64/lib/__moddi3.o$:
-		|| m:arch/ia64/lib/__modsi3.o$:
-		|| m:arch/ia64/lib/__udivdi3.o$:
-		|| m:arch/ia64/lib/__udivsi3.o$:
-		|| m:arch/ia64/lib/__umoddi3.o$:
-		|| m:arch/ia64/lib/__umodsi3.o$:
-		|| m:arch/ia64/scripts/check_gas_for_hint.o$:
-		|| m:arch/ia64/sn/kernel/xp.o$:
-		|| m:boot/bbootsect.o$:
-		|| m:boot/bsetup.o$:
-		|| m:/bootsect.o$:
-		|| m:/boot/setup.o$:
-		|| m:/compressed/:
-		|| m:drivers/cdrom/driver.o$:
-		|| m:drivers/char/drm/tdfx_drv.o$:
-		|| m:drivers/ide/ide-detect.o$:
-		|| m:drivers/ide/pci/idedriver-pci.o$:
-		|| m:drivers/media/media.o$:
-		|| m:drivers/scsi/sd_mod.o$:
-		|| m:drivers/video/video.o$:
-		|| m:fs/devpts/devpts.o$:
-		|| m:fs/exportfs/exportfs.o$:
-		|| m:fs/hugetlbfs/hugetlbfs.o$:
-		|| m:fs/msdos/msdos.o$:
-		|| m:fs/nls/nls.o$:
-		|| m:fs/ramfs/ramfs.o$:
-		|| m:fs/romfs/romfs.o$:
-		|| m:fs/vfat/vfat.o$:
-		|| m:init/mounts.o$:
-		|| m:^modules/:
-		|| m:net/netlink/netlink.o$:
-		|| m:net/sched/sched.o$:
-		|| m:/piggy.o$:
-		|| m:^scripts/:
-		|| m:sound/.*/snd-:
-		|| m:^.*/\.tmp_:
-		|| m:^\.tmp_:
-		|| m:/vmlinux-obj.o$:
-		|| m:^tools/:
-		)
-	) {
-		do_nm($basename, $_);
-	}
-	$_ = $basename;		# File::Find expects $_ untouched (undocumented)
-}
-
-sub do_nm
-{
-	my ($basename, $fullname) = @_;
-	my ($source, $type, $name);
-	if (! -e $basename) {
-		printf STDERR "$basename does not exist\n";
-		return;
-	}
-	if ($fullname !~ /\.o$/) {
-		printf STDERR "$fullname is not an object file\n";
-		return;
-	}
-	($source = $basename) =~ s/\.o$//;
-	if (-e "$source.c" || -e "$source.S") {
-		$source = File::Spec->catfile($objtree, $File::Find::dir, $source)
-	} else {
-		$source = File::Spec->catfile($srctree, $File::Find::dir, $source)
-	}
-	if (! -e "$source.c" && ! -e "$source.S") {
-		# No obvious source, exclude the object if it is conglomerate
-	        open(my $objdumpdata, "$objdump $basename|")
-		    or die "$objdump $fullname failed $!\n";
-
-		my $comment;
-		while (<$objdumpdata>) {
-			chomp();
-			if (/^In archive/) {
-				# Archives are always conglomerate
-				$comment = "GCC:GCC:";
-				last;
-			}
-			next if (! /^[ 0-9a-f]{5,} /);
-			$comment .= substr($_, 43);
-		}
-		close($objdumpdata);
-
-		if (!defined($comment) || $comment !~ /GCC\:.*GCC\:/m) {
-			printf STDERR "No source file found for $fullname\n";
-		}
-		return;
-	}
-	open (my $nmdata, "$nm $basename|")
-	    or die "$nm $fullname failed $!\n";
-
-	my @nmdata;
-	while (<$nmdata>) {
-		chop;
-		($type, $name) = (split(/ +/, $_, 3))[1..2];
-		# Expected types
-		# A absolute symbol
-		# B weak external reference to data that has been resolved
-		# C global variable, uninitialised
-		# D global variable, initialised
-		# G global variable, initialised, small data section
-		# R global array, initialised
-		# S global variable, uninitialised, small bss
-		# T global label/procedure
-		# U external reference
-		# W weak external reference to text that has been resolved
-		# V similar to W, but the value of the weak symbol becomes zero with no error.
-		# a assembler equate
-		# b static variable, uninitialised
-		# d static variable, initialised
-		# g static variable, initialised, small data section
-		# r static array, initialised
-		# s static variable, uninitialised, small bss
-		# t static label/procedures
-		# w weak external reference to text that has not been resolved
-		# v similar to w
-		# ? undefined type, used a lot by modules
-		if ($type !~ /^[ABCDGRSTUWVabdgrstwv?]$/) {
-			printf STDERR "nm output for $fullname contains unknown type '$_'\n";
-		}
-		elsif ($name =~ /\./) {
-			# name with '.' is local static
-		}
-		else {
-			$type = 'R' if ($type eq '?');	# binutils replaced ? with R at one point
-			# binutils keeps changing the type for exported symbols, force it to R
-			$type = 'R' if ($name =~ /^__ksymtab/ || $name =~ /^__kstrtab/);
-			$name =~ s/_R[a-f0-9]{8}$//;	# module versions adds this
-			if ($type =~ /[ABCDGRSTWV]/ &&
-				$name ne 'init_module' &&
-				$name ne 'cleanup_module' &&
-				$name ne 'Using_Versions' &&
-				$name !~ /^Version_[0-9]+$/ &&
-				$name !~ /^__parm_/ &&
-				$name !~ /^__kstrtab/ &&
-				$name !~ /^__ksymtab/ &&
-				$name !~ /^__kcrctab_/ &&
-				$name !~ /^__exitcall_/ &&
-				$name !~ /^__initcall_/ &&
-				$name !~ /^__kdb_initcall_/ &&
-				$name !~ /^__kdb_exitcall_/ &&
-				$name !~ /^__module_/ &&
-				$name !~ /^__mod_/ &&
-				$name !~ /^__crc_/ &&
-				$name ne '__this_module' &&
-				$name ne 'kernel_version') {
-				if (!exists($def{$name})) {
-					$def{$name} = [];
-				}
-				push(@{$def{$name}}, $fullname);
-			}
-			push(@nmdata, "$type $name");
-			if ($name =~ /^__ksymtab_/) {
-				$name = substr($name, 10);
-				if (!exists($ksymtab{$name})) {
-					$ksymtab{$name} = [];
-				}
-				push(@{$ksymtab{$name}}, $fullname);
-			}
-		}
-	}
-	close($nmdata);
-
-	if ($#nmdata < 0) {
-	    printf "No nm data for $fullname\n"
-		unless $nmexception{$fullname};
-	    return;
-	}
-	$nmdata{$fullname} = \@nmdata;
-}
-
-sub drop_def
-{
-	my ($object, $name) = @_;
-	my $nmdata = $nmdata{$object};
-	my ($i, $j);
-	for ($i = 0; $i <= $#{$nmdata}; ++$i) {
-		if ($name eq (split(' ', $nmdata->[$i], 2))[1]) {
-			splice(@{$nmdata{$object}}, $i, 1);
-			my $def = $def{$name};
-			for ($j = 0; $j < $#{$def{$name}}; ++$j) {
-				if ($def{$name}[$j] eq $object) {
-					splice(@{$def{$name}}, $j, 1);
-				}
-			}
-			last;
-		}
-	}
-}
-
-sub list_multiply_defined
-{
-	foreach my $name (keys(%def)) {
-		if ($#{$def{$name}} > 0) {
-			# Special case for cond_syscall
-			if ($#{$def{$name}} == 1 &&
-			   ($name =~ /^sys_/ || $name =~ /^compat_sys_/ ||
-			    $name =~ /^sys32_/)) {
-				if($def{$name}[0] eq "kernel/sys_ni.o" ||
-				   $def{$name}[1] eq "kernel/sys_ni.o") {
-					&drop_def("kernel/sys_ni.o", $name);
-					next;
-				}
-			}
-
-			printf "$name is multiply defined in :-\n";
-			foreach my $module (@{$def{$name}}) {
-				printf "\t$module\n";
-			}
-		}
-	}
-}
-
-sub resolve_external_references
-{
-	my ($kstrtab, $ksymtab, $export);
-
-	printf "\n";
-	foreach my $object (keys(%nmdata)) {
-		my $nmdata = $nmdata{$object};
-		for (my $i = 0; $i <= $#{$nmdata}; ++$i) {
-			my ($type, $name) = split(' ', $nmdata->[$i], 2);
-			if ($type eq "U" || $type eq "w") {
-				if (exists($def{$name}) || exists($ksymtab{$name})) {
-					# add the owning object to the nmdata
-					$nmdata->[$i] = "$type $name $object";
-					# only count as a reference if it is not EXPORT_...
-					$kstrtab = "R __kstrtab_$name";
-					$ksymtab = "R __ksymtab_$name";
-					$export = 0;
-					for (my $j = 0; $j <= $#{$nmdata}; ++$j) {
-						if ($nmdata->[$j] eq $kstrtab ||
-						    $nmdata->[$j] eq $ksymtab) {
-							$export = 1;
-							last;
-						}
-					}
-					if ($export) {
-						$export{$name} = "";
-					}
-					else {
-						$ref{$name} = ""
-					}
-				}
-				elsif ( ! $nameexception{$name}
-					&& $name !~ /^__sched_text_/
-					&& $name !~ /^__start_/
-					&& $name !~ /^__end_/
-					&& $name !~ /^__stop_/
-					&& $name !~ /^__scheduling_functions_.*_here/
-					&& $name !~ /^__.*initcall_/
-					&& $name !~ /^__.*per_cpu_start/
-					&& $name !~ /^__.*per_cpu_end/
-					&& $name !~ /^__alt_instructions/
-					&& $name !~ /^__setup_/
-					&& $name !~ /^__mod_timer/
-					&& $name !~ /^__mod_page_state/
-					&& $name !~ /^init_module/
-					&& $name !~ /^cleanup_module/
-				) {
-					printf "Cannot resolve ";
-					printf "weak " if ($type eq "w");
-					printf "reference to $name from $object\n";
-				}
-			}
-		}
-	}
-}
-
-sub list_extra_externals
-{
-	my %noref = ();
-
-	foreach my $name (keys(%def)) {
-		if (! exists($ref{$name})) {
-			my @module = @{$def{$name}};
-			foreach my $module (@module) {
-				if (! exists($noref{$module})) {
-					$noref{$module} = [];
-				}
-				push(@{$noref{$module}}, $name);
-			}
-		}
-	}
-	if (%noref) {
-		printf "\nExternally defined symbols with no external references\n";
-		foreach my $module (sort(keys(%noref))) {
-			printf "  $module\n";
-			foreach (sort(@{$noref{$module}})) {
-			    my $export;
-			    if (exists($export{$_})) {
-				$export = " (export only)";
-			    } else {
-				$export = "";
-			    }
-			    printf "    $_$export\n";
-			}
-		}
-	}
-}
diff --git a/scripts/nsdeps b/scripts/nsdeps
index e547f33..dab4c1a 100644
--- a/scripts/nsdeps
+++ b/scripts/nsdeps
@@ -21,21 +21,26 @@
 	exit 1
 fi
 
+if [ "$KBUILD_EXTMOD" ]; then
+	src_prefix=
+else
+	src_prefix=$srctree/
+fi
+
 generate_deps_for_ns() {
 	$SPATCH --very-quiet --in-place --sp-file \
 		$srctree/scripts/coccinelle/misc/add_namespace.cocci -D nsdeps -D ns=$1 $2
 }
 
 generate_deps() {
-	local mod_name=`basename $@ .ko`
-	local mod_file=`echo $@ | sed -e 's/\.ko/\.mod/'`
-	local ns_deps_file=`echo $@ | sed -e 's/\.ko/\.ns_deps/'`
-	if [ ! -f "$ns_deps_file" ]; then return; fi
-	local mod_source_files="`cat $mod_file | sed -n 1p                      \
+	local mod=${1%.ko:}
+	shift
+	local namespaces="$*"
+	local mod_source_files="`cat $mod.mod | sed -n 1p                      \
 					      | sed -e 's/\.o/\.c/g'           \
-					      | sed "s|[^ ]* *|${srctree}/&|g"`"
-	for ns in `cat $ns_deps_file`; do
-		echo "Adding namespace $ns to module $mod_name (if needed)."
+					      | sed "s|[^ ]* *|${src_prefix}&|g"`"
+	for ns in $namespaces; do
+		echo "Adding namespace $ns to module $mod.ko."
 		generate_deps_for_ns $ns "$mod_source_files"
 		# sort the imports
 		for source_file in $mod_source_files; do
@@ -52,7 +57,7 @@
 	done
 }
 
-for f in `cat $objtree/modules.order`; do
-	generate_deps $f
-done
-
+while read line
+do
+	generate_deps $line
+done < $MODULES_NSDEPS
diff --git a/scripts/package/builddeb b/scripts/package/builddeb
index c4c580f..91a502b 100755
--- a/scripts/package/builddeb
+++ b/scripts/package/builddeb
@@ -26,34 +26,90 @@
 
 create_package() {
 	local pname="$1" pdir="$2"
+	local dpkg_deb_opts
 
 	mkdir -m 755 -p "$pdir/DEBIAN"
 	mkdir -p "$pdir/usr/share/doc/$pname"
 	cp debian/copyright "$pdir/usr/share/doc/$pname/"
 	cp debian/changelog "$pdir/usr/share/doc/$pname/changelog.Debian"
-	gzip -9 "$pdir/usr/share/doc/$pname/changelog.Debian"
+	gzip -n -9 "$pdir/usr/share/doc/$pname/changelog.Debian"
 	sh -c "cd '$pdir'; find . -type f ! -path './DEBIAN/*' -printf '%P\0' \
 		| xargs -r0 md5sum > DEBIAN/md5sums"
 
 	# Fix ownership and permissions
-	chown -R root:root "$pdir"
+	if [ "$DEB_RULES_REQUIRES_ROOT" = "no" ]; then
+		dpkg_deb_opts="--root-owner-group"
+	else
+		chown -R root:root "$pdir"
+	fi
 	chmod -R go-w "$pdir"
 	# in case we are in a restrictive umask environment like 0077
 	chmod -R a+rX "$pdir"
+	# in case we build in a setuid/setgid directory
+	chmod -R ug-s "$pdir"
 
 	# Create the package
 	dpkg-gencontrol -p$pname -P"$pdir"
-	dpkg --build "$pdir" ..
+	dpkg-deb $dpkg_deb_opts ${KDEB_COMPRESS:+-Z$KDEB_COMPRESS} --build "$pdir" ..
+}
+
+deploy_kernel_headers () {
+	pdir=$1
+
+	rm -rf $pdir
+
+	(
+		cd $srctree
+		find . arch/$SRCARCH -maxdepth 1 -name Makefile\*
+		find include scripts -type f -o -type l
+		find arch/$SRCARCH -name Kbuild.platforms -o -name Platform
+		find $(find arch/$SRCARCH -name include -o -name scripts -type d) -type f
+	) > debian/hdrsrcfiles
+
+	{
+		if is_enabled CONFIG_STACK_VALIDATION; then
+			echo tools/objtool/objtool
+		fi
+
+		find arch/$SRCARCH/include Module.symvers include scripts -type f
+
+		if is_enabled CONFIG_GCC_PLUGINS; then
+			find scripts/gcc-plugins -name \*.so
+		fi
+	} > debian/hdrobjfiles
+
+	destdir=$pdir/usr/src/linux-headers-$version
+	mkdir -p $destdir
+	tar -c -f - -C $srctree -T debian/hdrsrcfiles | tar -xf - -C $destdir
+	tar -c -f - -T debian/hdrobjfiles | tar -xf - -C $destdir
+	rm -f debian/hdrsrcfiles debian/hdrobjfiles
+
+	# copy .config manually to be where it's expected to be
+	cp $KCONFIG_CONFIG $destdir/.config
+
+	mkdir -p $pdir/lib/modules/$version/
+	ln -s /usr/src/linux-headers-$version $pdir/lib/modules/$version/build
+}
+
+deploy_libc_headers () {
+	pdir=$1
+
+	rm -rf $pdir
+
+	$MAKE -f $srctree/Makefile headers
+	$MAKE -f $srctree/Makefile headers_install INSTALL_HDR_PATH=$pdir/usr
+
+	# move asm headers to /usr/include/<libc-machine>/asm to match the structure
+	# used by Debian-based distros (to support multi-arch)
+	host_arch=$(dpkg-architecture -a$(cat debian/arch) -qDEB_HOST_MULTIARCH)
+	mkdir $pdir/usr/include/$host_arch
+	mv $pdir/usr/include/asm $pdir/usr/include/$host_arch/
 }
 
 version=$KERNELRELEASE
-tmpdir="$objtree/debian/tmp"
-kernel_headers_dir="$objtree/debian/hdrtmp"
-libc_headers_dir="$objtree/debian/headertmp"
-dbg_dir="$objtree/debian/dbgtmp"
+tmpdir=debian/linux-image
+dbg_dir=debian/linux-image-dbg
 packagename=linux-image-$version
-kernel_headers_packagename=linux-headers-$version
-libc_headers_packagename=linux-libc-dev
 dbg_packagename=$packagename-dbg
 
 if [ "$ARCH" = "um" ] ; then
@@ -77,15 +133,13 @@
 BUILD_DEBUG=$(if_enabled_echo CONFIG_DEBUG_INFO Yes)
 
 # Setup the directory structure
-rm -rf "$tmpdir" "$kernel_headers_dir" "$libc_headers_dir" "$dbg_dir" $objtree/debian/files
+rm -rf "$tmpdir" "$dbg_dir" debian/files
 mkdir -m 755 -p "$tmpdir/DEBIAN"
 mkdir -p "$tmpdir/lib" "$tmpdir/boot"
-mkdir -p "$kernel_headers_dir/lib/modules/$version/"
 
-# Build and install the kernel
+# Install the kernel
 if [ "$ARCH" = "um" ] ; then
 	mkdir -p "$tmpdir/usr/lib/uml/modules/$version" "$tmpdir/usr/bin" "$tmpdir/usr/share/doc/$packagename"
-	$MAKE linux
 	cp System.map "$tmpdir/usr/lib/uml/modules/$version/System.map"
 	cp $KCONFIG_CONFIG "$tmpdir/usr/share/doc/$packagename/config"
 	gzip "$tmpdir/usr/share/doc/$packagename/config"
@@ -129,16 +183,6 @@
 	fi
 fi
 
-if [ "$ARCH" != "um" ]; then
-	$MAKE -f $srctree/Makefile headers
-	$MAKE -f $srctree/Makefile headers_install INSTALL_HDR_PATH="$libc_headers_dir/usr"
-	# move asm headers to /usr/include/<libc-machine>/asm to match the structure
-	# used by Debian-based distros (to support multi-arch)
-	host_arch=$(dpkg-architecture -a$(cat debian/arch) -qDEB_HOST_MULTIARCH)
-	mkdir $libc_headers_dir/usr/include/$host_arch
-	mv $libc_headers_dir/usr/include/asm $libc_headers_dir/usr/include/$host_arch/
-fi
-
 # Install the maintainer scripts
 # Note: hook scripts under /etc/kernel are also executed by official Debian
 # kernel packages, as well as kernel packages built using make-kpkg.
@@ -164,29 +208,14 @@
 	chmod 755 "$tmpdir/DEBIAN/$script"
 done
 
-# Build kernel header package
-(cd $srctree; find . -name Makefile\* -o -name Kconfig\* -o -name \*.pl) > "$objtree/debian/hdrsrcfiles"
-(cd $srctree; find arch/*/include include scripts -type f -o -type l) >> "$objtree/debian/hdrsrcfiles"
-(cd $srctree; find arch/$SRCARCH -name module.lds -o -name Kbuild.platforms -o -name Platform) >> "$objtree/debian/hdrsrcfiles"
-(cd $srctree; find $(find arch/$SRCARCH -name include -o -name scripts -type d) -type f) >> "$objtree/debian/hdrsrcfiles"
-if is_enabled CONFIG_STACK_VALIDATION; then
-	(cd $objtree; find tools/objtool -type f -executable) >> "$objtree/debian/hdrobjfiles"
-fi
-(cd $objtree; find arch/$SRCARCH/include Module.symvers include scripts -type f) >> "$objtree/debian/hdrobjfiles"
-if is_enabled CONFIG_GCC_PLUGINS; then
-	(cd $objtree; find scripts/gcc-plugins -name \*.so -o -name gcc-common.h) >> "$objtree/debian/hdrobjfiles"
-fi
-destdir=$kernel_headers_dir/usr/src/linux-headers-$version
-mkdir -p "$destdir"
-(cd $srctree; tar -c -f - -T -) < "$objtree/debian/hdrsrcfiles" | (cd $destdir; tar -xf -)
-(cd $objtree; tar -c -f - -T -) < "$objtree/debian/hdrobjfiles" | (cd $destdir; tar -xf -)
-(cd $objtree; cp $KCONFIG_CONFIG $destdir/.config) # copy .config manually to be where it's expected to be
-ln -sf "/usr/src/linux-headers-$version" "$kernel_headers_dir/lib/modules/$version/build"
-rm -f "$objtree/debian/hdrsrcfiles" "$objtree/debian/hdrobjfiles"
-
 if [ "$ARCH" != "um" ]; then
-	create_package "$kernel_headers_packagename" "$kernel_headers_dir"
-	create_package "$libc_headers_packagename" "$libc_headers_dir"
+	if is_enabled CONFIG_MODULES; then
+		deploy_kernel_headers debian/linux-headers
+		create_package linux-headers-$version debian/linux-headers
+	fi
+
+	deploy_libc_headers debian/linux-libc-dev
+	create_package linux-libc-dev debian/linux-libc-dev
 fi
 
 create_package "$packagename" "$tmpdir"
diff --git a/scripts/package/buildtar b/scripts/package/buildtar
index 3d541ce..936198a 100755
--- a/scripts/package/buildtar
+++ b/scripts/package/buildtar
@@ -2,7 +2,7 @@
 # SPDX-License-Identifier: GPL-2.0
 
 #
-# buildtar 0.0.4
+# buildtar 0.0.5
 #
 # (C) 2004-2006 by Jan-Benedict Glaw <jbglaw@lug-owl.de>
 #
@@ -24,7 +24,7 @@
 # Figure out how to compress, if requested at all
 #
 case "${1}" in
-	tar-pkg)
+	dir-pkg|tar-pkg)
 		opts=
 		;;
 	targz-pkg)
@@ -53,6 +53,18 @@
 mkdir -p -- "${tmpdir}/boot"
 dirs=boot
 
+
+#
+# Try to install dtbs
+#
+if grep -q '^CONFIG_OF_EARLY_FLATTREE=y' include/config/auto.conf; then
+	# Only some architectures with OF support have this target
+	if [ -d "${srctree}/arch/${SRCARCH}/boot/dts" ]; then
+		$MAKE ARCH="${ARCH}" -f ${srctree}/Makefile INSTALL_DTBS_PATH="${tmpdir}/boot/dtbs/${KERNELRELEASE}" dtbs_install
+    fi
+fi
+
+
 #
 # Try to install modules
 #
@@ -125,6 +137,10 @@
 		;;
 esac
 
+if [ "${1}" = dir-pkg ]; then
+	echo "Kernel tree successfully created in $tmpdir"
+	exit 0
+fi
 
 #
 # Create the tarball
diff --git a/scripts/package/mkdebian b/scripts/package/mkdebian
index 357dc56..60a2a63 100755
--- a/scripts/package/mkdebian
+++ b/scripts/package/mkdebian
@@ -94,16 +94,16 @@
 	packageversion=$version-$revision
 fi
 sourcename=$KDEB_SOURCENAME
-packagename=linux-image-$version
-kernel_headers_packagename=linux-headers-$version
-dbg_packagename=$packagename-dbg
-debarch=
-set_debarch
 
 if [ "$ARCH" = "um" ] ; then
-	packagename=user-mode-linux-$version
+	packagename=user-mode-linux
+else
+	packagename=linux-image
 fi
 
+debarch=
+set_debarch
+
 email=${DEBEMAIL-$EMAIL}
 
 # use email string directly if it contains <email>
@@ -174,22 +174,16 @@
 Section: kernel
 Priority: optional
 Maintainer: $maintainer
+Rules-Requires-Root: no
 Build-Depends: bc, rsync, kmod, cpio, bison, flex | flex:native $extra_build_depends
-Homepage: http://www.kernel.org/
+Homepage: https://www.kernel.org/
 
-Package: $packagename
+Package: $packagename-$version
 Architecture: $debarch
 Description: Linux kernel, version $version
  This package contains the Linux kernel, modules and corresponding other
  files, version: $version.
 
-Package: $kernel_headers_packagename
-Architecture: $debarch
-Description: Linux kernel headers for $version on $debarch
- This package provides kernel header files for $version on $debarch
- .
- This is useful for people who need to build external modules
-
 Package: linux-libc-dev
 Section: devel
 Provides: linux-kernel-headers
@@ -198,25 +192,46 @@
  This package provides userspaces headers from the Linux kernel.  These headers
  are used by the installed headers for GNU glibc and other system libraries.
 Multi-Arch: same
+EOF
 
-Package: $dbg_packagename
+if is_enabled CONFIG_MODULES; then
+cat <<EOF >> debian/control
+
+Package: linux-headers-$version
+Architecture: $debarch
+Description: Linux kernel headers for $version on $debarch
+ This package provides kernel header files for $version on $debarch
+ .
+ This is useful for people who need to build external modules
+EOF
+fi
+
+if is_enabled CONFIG_DEBUG_INFO; then
+cat <<EOF >> debian/control
+
+Package: linux-image-$version-dbg
 Section: debug
 Architecture: $debarch
 Description: Linux kernel debugging symbols for $version
  This package will come in handy if you need to debug the kernel. It provides
  all the necessary debug symbols for the kernel and its modules.
 EOF
+fi
 
 cat <<EOF > debian/rules
 #!$(command -v $MAKE) -f
 
 srctree ?= .
 
-build:
+build-indep:
+build-arch:
 	\$(MAKE) KERNELRELEASE=${version} ARCH=${ARCH} \
 	KBUILD_BUILD_VERSION=${revision} -f \$(srctree)/Makefile
 
-binary-arch:
+build: build-arch
+
+binary-indep:
+binary-arch: build-arch
 	\$(MAKE) KERNELRELEASE=${version} ARCH=${ARCH} \
 	KBUILD_BUILD_VERSION=${revision} -f \$(srctree)/Makefile intdeb-pkg
 
diff --git a/scripts/package/mkspec b/scripts/package/mkspec
index 8640c27..7c477ca 100755
--- a/scripts/package/mkspec
+++ b/scripts/package/mkspec
@@ -46,7 +46,7 @@
 	License: GPL
 	Group: System Environment/Kernel
 	Vendor: The Linux Community
-	URL: http://www.kernel.org
+	URL: https://www.kernel.org
 $S	Source: kernel-$__KERNELRELEASE.tar.gz
 	Provides: $PROVIDES
 	%define __spec_install_post /usr/lib/rpm/brp-compress || :
diff --git a/scripts/parse-maintainers.pl b/scripts/parse-maintainers.pl
index 255cef1..2ca4eb3 100755
--- a/scripts/parse-maintainers.pl
+++ b/scripts/parse-maintainers.pl
@@ -8,13 +8,14 @@
 my $output_file = "MAINTAINERS.new";
 my $output_section = "SECTION.new";
 my $help = 0;
-
+my $order = 0;
 my $P = $0;
 
 if (!GetOptions(
 		'input=s' => \$input_file,
 		'output=s' => \$output_file,
 		'section=s' => \$output_section,
+		'order!' => \$order,
 		'h|help|usage' => \$help,
 	    )) {
     die "$P: invalid argument - use --help if necessary\n";
@@ -32,6 +33,22 @@
   --input => MAINTAINERS file to read (default: MAINTAINERS)
   --output => sorted MAINTAINERS file to write (default: MAINTAINERS.new)
   --section => new sorted MAINTAINERS file to write to (default: SECTION.new)
+  --order => Use the preferred section content output ordering (default: 0)
+    Preferred ordering of section output is:
+      M:  Person acting as a maintainer
+      R:  Person acting as a patch reviewer
+      L:  Mailing list where patches should be sent
+      S:  Maintenance status
+      W:  URI for general information
+      Q:  URI for patchwork tracking
+      B:  URI for bug tracking/submission
+      C:  URI for chat
+      P:  URI or file for subsystem specific coding styles
+      T:  SCM tree type and location
+      F:  File and directory pattern
+      X:  File and directory exclusion pattern
+      N:  File glob
+      K:  Keyword - patch content regex
 
 If <pattern match regexes> exist, then the sections that match the
 regexes are not written to the output file but are written to the
@@ -56,7 +73,7 @@
 
 sub by_pattern($$) {
     my ($a, $b) = @_;
-    my $preferred_order = 'MRPLSWTQBCFXNK';
+    my $preferred_order = 'MRLSWQBCPTFXNK';
 
     my $a1 = uc(substr($a, 0, 1));
     my $b1 = uc(substr($b, 0, 1));
@@ -105,8 +122,14 @@
 		print $file $separator;
 	    }
 	    print $file $key . "\n";
-	    foreach my $pattern (sort by_pattern split('\n', %$hashref{$key})) {
-		print $file ($pattern . "\n");
+	    if ($order) {
+		foreach my $pattern (sort by_pattern split('\n', %$hashref{$key})) {
+		    print $file ($pattern . "\n");
+		}
+	    } else {
+		foreach my $pattern (split('\n', %$hashref{$key})) {
+		    print $file ($pattern . "\n");
+		}
 	    }
 	}
     }
diff --git a/scripts/pnmtologo.c b/scripts/pnmtologo.c
deleted file mode 100644
index 4718d78..0000000
--- a/scripts/pnmtologo.c
+++ /dev/null
@@ -1,514 +0,0 @@
-
-/*
- *  Convert a logo in ASCII PNM format to C source suitable for inclusion in
- *  the Linux kernel
- *
- *  (C) Copyright 2001-2003 by Geert Uytterhoeven <geert@linux-m68k.org>
- *
- *  --------------------------------------------------------------------------
- *
- *  This file is subject to the terms and conditions of the GNU General Public
- *  License. See the file COPYING in the main directory of the Linux
- *  distribution for more details.
- */
-
-#include <ctype.h>
-#include <errno.h>
-#include <stdarg.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <unistd.h>
-
-
-static const char *programname;
-static const char *filename;
-static const char *logoname = "linux_logo";
-static const char *outputname;
-static FILE *out;
-
-
-#define LINUX_LOGO_MONO		1	/* monochrome black/white */
-#define LINUX_LOGO_VGA16	2	/* 16 colors VGA text palette */
-#define LINUX_LOGO_CLUT224	3	/* 224 colors */
-#define LINUX_LOGO_GRAY256	4	/* 256 levels grayscale */
-
-static const char *logo_types[LINUX_LOGO_GRAY256+1] = {
-    [LINUX_LOGO_MONO] = "LINUX_LOGO_MONO",
-    [LINUX_LOGO_VGA16] = "LINUX_LOGO_VGA16",
-    [LINUX_LOGO_CLUT224] = "LINUX_LOGO_CLUT224",
-    [LINUX_LOGO_GRAY256] = "LINUX_LOGO_GRAY256"
-};
-
-#define MAX_LINUX_LOGO_COLORS	224
-
-struct color {
-    unsigned char red;
-    unsigned char green;
-    unsigned char blue;
-};
-
-static const struct color clut_vga16[16] = {
-    { 0x00, 0x00, 0x00 },
-    { 0x00, 0x00, 0xaa },
-    { 0x00, 0xaa, 0x00 },
-    { 0x00, 0xaa, 0xaa },
-    { 0xaa, 0x00, 0x00 },
-    { 0xaa, 0x00, 0xaa },
-    { 0xaa, 0x55, 0x00 },
-    { 0xaa, 0xaa, 0xaa },
-    { 0x55, 0x55, 0x55 },
-    { 0x55, 0x55, 0xff },
-    { 0x55, 0xff, 0x55 },
-    { 0x55, 0xff, 0xff },
-    { 0xff, 0x55, 0x55 },
-    { 0xff, 0x55, 0xff },
-    { 0xff, 0xff, 0x55 },
-    { 0xff, 0xff, 0xff },
-};
-
-
-static int logo_type = LINUX_LOGO_CLUT224;
-static unsigned int logo_width;
-static unsigned int logo_height;
-static struct color **logo_data;
-static struct color logo_clut[MAX_LINUX_LOGO_COLORS];
-static unsigned int logo_clutsize;
-static int is_plain_pbm = 0;
-
-static void die(const char *fmt, ...)
-    __attribute__ ((noreturn)) __attribute ((format (printf, 1, 2)));
-static void usage(void) __attribute ((noreturn));
-
-
-static unsigned int get_number(FILE *fp)
-{
-    int c, val;
-
-    /* Skip leading whitespace */
-    do {
-	c = fgetc(fp);
-	if (c == EOF)
-	    die("%s: end of file\n", filename);
-	if (c == '#') {
-	    /* Ignore comments 'till end of line */
-	    do {
-		c = fgetc(fp);
-		if (c == EOF)
-		    die("%s: end of file\n", filename);
-	    } while (c != '\n');
-	}
-    } while (isspace(c));
-
-    /* Parse decimal number */
-    val = 0;
-    while (isdigit(c)) {
-	val = 10*val+c-'0';
-	/* some PBM are 'broken'; GiMP for example exports a PBM without space
-	 * between the digits. This is Ok cause we know a PBM can only have a '1'
-	 * or a '0' for the digit. */
-	if (is_plain_pbm)
-		break;
-	c = fgetc(fp);
-	if (c == EOF)
-	    die("%s: end of file\n", filename);
-    }
-    return val;
-}
-
-static unsigned int get_number255(FILE *fp, unsigned int maxval)
-{
-    unsigned int val = get_number(fp);
-    return (255*val+maxval/2)/maxval;
-}
-
-static void read_image(void)
-{
-    FILE *fp;
-    unsigned int i, j;
-    int magic;
-    unsigned int maxval;
-
-    /* open image file */
-    fp = fopen(filename, "r");
-    if (!fp)
-	die("Cannot open file %s: %s\n", filename, strerror(errno));
-
-    /* check file type and read file header */
-    magic = fgetc(fp);
-    if (magic != 'P')
-	die("%s is not a PNM file\n", filename);
-    magic = fgetc(fp);
-    switch (magic) {
-	case '1':
-	case '2':
-	case '3':
-	    /* Plain PBM/PGM/PPM */
-	    break;
-
-	case '4':
-	case '5':
-	case '6':
-	    /* Binary PBM/PGM/PPM */
-	    die("%s: Binary PNM is not supported\n"
-		"Use pnmnoraw(1) to convert it to ASCII PNM\n", filename);
-
-	default:
-	    die("%s is not a PNM file\n", filename);
-    }
-    logo_width = get_number(fp);
-    logo_height = get_number(fp);
-
-    /* allocate image data */
-    logo_data = (struct color **)malloc(logo_height*sizeof(struct color *));
-    if (!logo_data)
-	die("%s\n", strerror(errno));
-    for (i = 0; i < logo_height; i++) {
-	logo_data[i] = malloc(logo_width*sizeof(struct color));
-	if (!logo_data[i])
-	    die("%s\n", strerror(errno));
-    }
-
-    /* read image data */
-    switch (magic) {
-	case '1':
-	    /* Plain PBM */
-	    is_plain_pbm = 1;
-	    for (i = 0; i < logo_height; i++)
-		for (j = 0; j < logo_width; j++)
-		    logo_data[i][j].red = logo_data[i][j].green =
-			logo_data[i][j].blue = 255*(1-get_number(fp));
-	    break;
-
-	case '2':
-	    /* Plain PGM */
-	    maxval = get_number(fp);
-	    for (i = 0; i < logo_height; i++)
-		for (j = 0; j < logo_width; j++)
-		    logo_data[i][j].red = logo_data[i][j].green =
-			logo_data[i][j].blue = get_number255(fp, maxval);
-	    break;
-
-	case '3':
-	    /* Plain PPM */
-	    maxval = get_number(fp);
-	    for (i = 0; i < logo_height; i++)
-		for (j = 0; j < logo_width; j++) {
-		    logo_data[i][j].red = get_number255(fp, maxval);
-		    logo_data[i][j].green = get_number255(fp, maxval);
-		    logo_data[i][j].blue = get_number255(fp, maxval);
-		}
-	    break;
-    }
-
-    /* close file */
-    fclose(fp);
-}
-
-static inline int is_black(struct color c)
-{
-    return c.red == 0 && c.green == 0 && c.blue == 0;
-}
-
-static inline int is_white(struct color c)
-{
-    return c.red == 255 && c.green == 255 && c.blue == 255;
-}
-
-static inline int is_gray(struct color c)
-{
-    return c.red == c.green && c.red == c.blue;
-}
-
-static inline int is_equal(struct color c1, struct color c2)
-{
-    return c1.red == c2.red && c1.green == c2.green && c1.blue == c2.blue;
-}
-
-static void write_header(void)
-{
-    /* open logo file */
-    if (outputname) {
-	out = fopen(outputname, "w");
-	if (!out)
-	    die("Cannot create file %s: %s\n", outputname, strerror(errno));
-    } else {
-	out = stdout;
-    }
-
-    fputs("/*\n", out);
-    fputs(" *  DO NOT EDIT THIS FILE!\n", out);
-    fputs(" *\n", out);
-    fprintf(out, " *  It was automatically generated from %s\n", filename);
-    fputs(" *\n", out);
-    fprintf(out, " *  Linux logo %s\n", logoname);
-    fputs(" */\n\n", out);
-    fputs("#include <linux/linux_logo.h>\n\n", out);
-    fprintf(out, "static unsigned char %s_data[] __initdata = {\n",
-	    logoname);
-}
-
-static void write_footer(void)
-{
-    fputs("\n};\n\n", out);
-    fprintf(out, "const struct linux_logo %s __initconst = {\n", logoname);
-    fprintf(out, "\t.type\t\t= %s,\n", logo_types[logo_type]);
-    fprintf(out, "\t.width\t\t= %d,\n", logo_width);
-    fprintf(out, "\t.height\t\t= %d,\n", logo_height);
-    if (logo_type == LINUX_LOGO_CLUT224) {
-	fprintf(out, "\t.clutsize\t= %d,\n", logo_clutsize);
-	fprintf(out, "\t.clut\t\t= %s_clut,\n", logoname);
-    }
-    fprintf(out, "\t.data\t\t= %s_data\n", logoname);
-    fputs("};\n\n", out);
-
-    /* close logo file */
-    if (outputname)
-	fclose(out);
-}
-
-static int write_hex_cnt;
-
-static void write_hex(unsigned char byte)
-{
-    if (write_hex_cnt % 12)
-	fprintf(out, ", 0x%02x", byte);
-    else if (write_hex_cnt)
-	fprintf(out, ",\n\t0x%02x", byte);
-    else
-	fprintf(out, "\t0x%02x", byte);
-    write_hex_cnt++;
-}
-
-static void write_logo_mono(void)
-{
-    unsigned int i, j;
-    unsigned char val, bit;
-
-    /* validate image */
-    for (i = 0; i < logo_height; i++)
-	for (j = 0; j < logo_width; j++)
-	    if (!is_black(logo_data[i][j]) && !is_white(logo_data[i][j]))
-		die("Image must be monochrome\n");
-
-    /* write file header */
-    write_header();
-
-    /* write logo data */
-    for (i = 0; i < logo_height; i++) {
-	for (j = 0; j < logo_width;) {
-	    for (val = 0, bit = 0x80; bit && j < logo_width; j++, bit >>= 1)
-		if (logo_data[i][j].red)
-		    val |= bit;
-	    write_hex(val);
-	}
-    }
-
-    /* write logo structure and file footer */
-    write_footer();
-}
-
-static void write_logo_vga16(void)
-{
-    unsigned int i, j, k;
-    unsigned char val;
-
-    /* validate image */
-    for (i = 0; i < logo_height; i++)
-	for (j = 0; j < logo_width; j++) {
-	    for (k = 0; k < 16; k++)
-		if (is_equal(logo_data[i][j], clut_vga16[k]))
-		    break;
-	    if (k == 16)
-		die("Image must use the 16 console colors only\n"
-		    "Use ppmquant(1) -map clut_vga16.ppm to reduce the number "
-		    "of colors\n");
-	}
-
-    /* write file header */
-    write_header();
-
-    /* write logo data */
-    for (i = 0; i < logo_height; i++)
-	for (j = 0; j < logo_width; j++) {
-	    for (k = 0; k < 16; k++)
-		if (is_equal(logo_data[i][j], clut_vga16[k]))
-		    break;
-	    val = k<<4;
-	    if (++j < logo_width) {
-		for (k = 0; k < 16; k++)
-		    if (is_equal(logo_data[i][j], clut_vga16[k]))
-			break;
-		val |= k;
-	    }
-	    write_hex(val);
-	}
-
-    /* write logo structure and file footer */
-    write_footer();
-}
-
-static void write_logo_clut224(void)
-{
-    unsigned int i, j, k;
-
-    /* validate image */
-    for (i = 0; i < logo_height; i++)
-	for (j = 0; j < logo_width; j++) {
-	    for (k = 0; k < logo_clutsize; k++)
-		if (is_equal(logo_data[i][j], logo_clut[k]))
-		    break;
-	    if (k == logo_clutsize) {
-		if (logo_clutsize == MAX_LINUX_LOGO_COLORS)
-		    die("Image has more than %d colors\n"
-			"Use ppmquant(1) to reduce the number of colors\n",
-			MAX_LINUX_LOGO_COLORS);
-		logo_clut[logo_clutsize++] = logo_data[i][j];
-	    }
-	}
-
-    /* write file header */
-    write_header();
-
-    /* write logo data */
-    for (i = 0; i < logo_height; i++)
-	for (j = 0; j < logo_width; j++) {
-	    for (k = 0; k < logo_clutsize; k++)
-		if (is_equal(logo_data[i][j], logo_clut[k]))
-		    break;
-	    write_hex(k+32);
-	}
-    fputs("\n};\n\n", out);
-
-    /* write logo clut */
-    fprintf(out, "static unsigned char %s_clut[] __initdata = {\n",
-	    logoname);
-    write_hex_cnt = 0;
-    for (i = 0; i < logo_clutsize; i++) {
-	write_hex(logo_clut[i].red);
-	write_hex(logo_clut[i].green);
-	write_hex(logo_clut[i].blue);
-    }
-
-    /* write logo structure and file footer */
-    write_footer();
-}
-
-static void write_logo_gray256(void)
-{
-    unsigned int i, j;
-
-    /* validate image */
-    for (i = 0; i < logo_height; i++)
-	for (j = 0; j < logo_width; j++)
-	    if (!is_gray(logo_data[i][j]))
-		die("Image must be grayscale\n");
-
-    /* write file header */
-    write_header();
-
-    /* write logo data */
-    for (i = 0; i < logo_height; i++)
-	for (j = 0; j < logo_width; j++)
-	    write_hex(logo_data[i][j].red);
-
-    /* write logo structure and file footer */
-    write_footer();
-}
-
-static void die(const char *fmt, ...)
-{
-    va_list ap;
-
-    va_start(ap, fmt);
-    vfprintf(stderr, fmt, ap);
-    va_end(ap);
-
-    exit(1);
-}
-
-static void usage(void)
-{
-    die("\n"
-	"Usage: %s [options] <filename>\n"
-	"\n"
-	"Valid options:\n"
-	"    -h          : display this usage information\n"
-	"    -n <name>   : specify logo name (default: linux_logo)\n"
-	"    -o <output> : output to file <output> instead of stdout\n"
-	"    -t <type>   : specify logo type, one of\n"
-	"                      mono    : monochrome black/white\n"
-	"                      vga16   : 16 colors VGA text palette\n"
-	"                      clut224 : 224 colors (default)\n"
-	"                      gray256 : 256 levels grayscale\n"
-	"\n", programname);
-}
-
-int main(int argc, char *argv[])
-{
-    int opt;
-
-    programname = argv[0];
-
-    opterr = 0;
-    while (1) {
-	opt = getopt(argc, argv, "hn:o:t:");
-	if (opt == -1)
-	    break;
-
-	switch (opt) {
-	    case 'h':
-		usage();
-		break;
-
-	    case 'n':
-		logoname = optarg;
-		break;
-
-	    case 'o':
-		outputname = optarg;
-		break;
-
-	    case 't':
-		if (!strcmp(optarg, "mono"))
-		    logo_type = LINUX_LOGO_MONO;
-		else if (!strcmp(optarg, "vga16"))
-		    logo_type = LINUX_LOGO_VGA16;
-		else if (!strcmp(optarg, "clut224"))
-		    logo_type = LINUX_LOGO_CLUT224;
-		else if (!strcmp(optarg, "gray256"))
-		    logo_type = LINUX_LOGO_GRAY256;
-		else
-		    usage();
-		break;
-
-	    default:
-		usage();
-		break;
-	}
-    }
-    if (optind != argc-1)
-	usage();
-
-    filename = argv[optind];
-
-    read_image();
-    switch (logo_type) {
-	case LINUX_LOGO_MONO:
-	    write_logo_mono();
-	    break;
-
-	case LINUX_LOGO_VGA16:
-	    write_logo_vga16();
-	    break;
-
-	case LINUX_LOGO_CLUT224:
-	    write_logo_clut224();
-	    break;
-
-	case LINUX_LOGO_GRAY256:
-	    write_logo_gray256();
-	    break;
-    }
-    exit(0);
-}
diff --git a/scripts/recordmcount.pl b/scripts/recordmcount.pl
index 4f84657..dc1d369 100755
--- a/scripts/recordmcount.pl
+++ b/scripts/recordmcount.pl
@@ -222,7 +222,7 @@
 $local_regex = "^[0-9a-fA-F]+\\s+t\\s+(\\S+)";
 $weak_regex = "^[0-9a-fA-F]+\\s+([wW])\\s+(\\S+)";
 $section_regex = "Disassembly of section\\s+(\\S+):";
-$function_regex = "^([0-9a-fA-F]+)\\s+<(.*?)>:";
+$function_regex = "^([0-9a-fA-F]+)\\s+<([^^]*?)>:";
 $mcount_regex = "^\\s*([0-9a-fA-F]+):.*\\s(mcount|__fentry__)\$";
 $section_type = '@progbits';
 $mcount_adjust = 0;
@@ -252,7 +252,7 @@
 
 } elsif ($arch eq "s390" && $bits == 64) {
     if ($cc =~ /-DCC_USING_HOTPATCH/) {
-	$mcount_regex = "^\\s*([0-9a-fA-F]+):\\s*c0 04 00 00 00 00\\s*brcl\\s*0,[0-9a-f]+ <([^\+]*)>\$";
+	$mcount_regex = "^\\s*([0-9a-fA-F]+):\\s*c0 04 00 00 00 00\\s*(brcl\\s*0,|jgnop\\s*)[0-9a-f]+ <([^\+]*)>\$";
 	$mcount_adjust = 0;
     } else {
 	$mcount_regex = "^\\s*([0-9a-fA-F]+):\\s*R_390_(PC|PLT)32DBL\\s+_mcount\\+0x2\$";
diff --git a/scripts/selinux/genheaders/.gitignore b/scripts/selinux/genheaders/.gitignore
index 4c0b646..5fcadd3 100644
--- a/scripts/selinux/genheaders/.gitignore
+++ b/scripts/selinux/genheaders/.gitignore
@@ -1 +1,2 @@
+# SPDX-License-Identifier: GPL-2.0-only
 genheaders
diff --git a/scripts/selinux/genheaders/Makefile b/scripts/selinux/genheaders/Makefile
index e8c5331..1faf7f0 100644
--- a/scripts/selinux/genheaders/Makefile
+++ b/scripts/selinux/genheaders/Makefile
@@ -1,7 +1,5 @@
 # SPDX-License-Identifier: GPL-2.0
-hostprogs-y	:= genheaders
+hostprogs-always-y += genheaders
 HOST_EXTRACFLAGS += \
 	-I$(srctree)/include/uapi -I$(srctree)/include \
 	-I$(srctree)/security/selinux/include
-
-always		:= $(hostprogs-y)
diff --git a/scripts/selinux/genheaders/genheaders.c b/scripts/selinux/genheaders/genheaders.c
index 544ca12..f355b3e 100644
--- a/scripts/selinux/genheaders/genheaders.c
+++ b/scripts/selinux/genheaders/genheaders.c
@@ -67,8 +67,12 @@
 	}
 
 	isids_len = sizeof(initial_sid_to_string) / sizeof (char *);
-	for (i = 1; i < isids_len; i++)
-		initial_sid_to_string[i] = stoupperx(initial_sid_to_string[i]);
+	for (i = 1; i < isids_len; i++) {
+		const char *s = initial_sid_to_string[i];
+
+		if (s)
+			initial_sid_to_string[i] = stoupperx(s);
+	}
 
 	fprintf(fout, "/* This file is automatically generated.  Do not edit. */\n");
 	fprintf(fout, "#ifndef _SELINUX_FLASK_H_\n#define _SELINUX_FLASK_H_\n\n");
@@ -82,7 +86,8 @@
 
 	for (i = 1; i < isids_len; i++) {
 		const char *s = initial_sid_to_string[i];
-		fprintf(fout, "#define SECINITSID_%-39s %2d\n", s, i);
+		if (s)
+			fprintf(fout, "#define SECINITSID_%-39s %2d\n", s, i);
 	}
 	fprintf(fout, "\n#define SECINITSID_NUM %d\n", i-1);
 	fprintf(fout, "\nstatic inline bool security_is_socket_class(u16 kern_tclass)\n");
diff --git a/scripts/selinux/mdp/.gitignore b/scripts/selinux/mdp/.gitignore
index 654546d..a748228 100644
--- a/scripts/selinux/mdp/.gitignore
+++ b/scripts/selinux/mdp/.gitignore
@@ -1,2 +1,2 @@
-# Generated file
+# SPDX-License-Identifier: GPL-2.0-only
 mdp
diff --git a/scripts/selinux/mdp/Makefile b/scripts/selinux/mdp/Makefile
index 8a1269a..d61058d 100644
--- a/scripts/selinux/mdp/Makefile
+++ b/scripts/selinux/mdp/Makefile
@@ -1,8 +1,7 @@
 # SPDX-License-Identifier: GPL-2.0
-hostprogs-y	:= mdp
+hostprogs-always-y += mdp
 HOST_EXTRACFLAGS += \
 	-I$(srctree)/include/uapi -I$(srctree)/include \
 	-I$(srctree)/security/selinux/include -I$(objtree)/include
 
-always		:= $(hostprogs-y)
 clean-files	:= policy.* file_contexts
diff --git a/scripts/selinux/mdp/mdp.c b/scripts/selinux/mdp/mdp.c
index 576d11a..105c1c3 100644
--- a/scripts/selinux/mdp/mdp.c
+++ b/scripts/selinux/mdp/mdp.c
@@ -35,6 +35,9 @@
 
 #include "classmap.h"
 #include "initial_sid_to_string.h"
+#include "policycap_names.h"
+
+#define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0]))
 
 int main(int argc, char *argv[])
 {
@@ -67,8 +70,14 @@
 
 	initial_sid_to_string_len = sizeof(initial_sid_to_string) / sizeof (char *);
 	/* print out the sids */
-	for (i = 1; i < initial_sid_to_string_len; i++)
-		fprintf(fout, "sid %s\n", initial_sid_to_string[i]);
+	for (i = 1; i < initial_sid_to_string_len; i++) {
+		const char *name = initial_sid_to_string[i];
+
+		if (name)
+			fprintf(fout, "sid %s\n", name);
+		else
+			fprintf(fout, "sid unused%d\n", i);
+	}
 	fprintf(fout, "\n");
 
 	/* print out the class permissions */
@@ -109,6 +118,10 @@
 		}
 	}
 
+	/* enable all policy capabilities */
+	for (i = 0; i < ARRAY_SIZE(selinux_policycap_names); i++)
+		fprintf(fout, "policycap %s;\n", selinux_policycap_names[i]);
+
 	/* types, roles, and allows */
 	fprintf(fout, "type base_t;\n");
 	fprintf(fout, "role base_r;\n");
@@ -126,9 +139,16 @@
 #define OBJUSERROLETYPE "user_u:object_r:base_t"
 
 	/* default sids */
-	for (i = 1; i < initial_sid_to_string_len; i++)
-		fprintf(fout, "sid %s " SUBJUSERROLETYPE "%s\n",
-			initial_sid_to_string[i], mls ? ":" SYSTEMLOW : "");
+	for (i = 1; i < initial_sid_to_string_len; i++) {
+		const char *name = initial_sid_to_string[i];
+
+		if (name)
+			fprintf(fout, "sid %s ", name);
+		else
+			fprintf(fout, "sid unused%d\n", i);
+		fprintf(fout, SUBJUSERROLETYPE "%s\n",
+			mls ? ":" SYSTEMLOW : "");
+	}
 	fprintf(fout, "\n");
 
 #define FS_USE(behavior, fstype)			    \
diff --git a/scripts/setlocalversion b/scripts/setlocalversion
index 45609db..bb709ed 100755
--- a/scripts/setlocalversion
+++ b/scripts/setlocalversion
@@ -49,7 +49,7 @@
 
 		# If we are at a tagged commit (like "v2.6.30-rc6"), we ignore
 		# it, because this version is defined in the top level Makefile.
-		if [ -z "`git describe --exact-match 2>/dev/null`" ]; then
+		if [ -z "$(git describe --exact-match 2>/dev/null)" ]; then
 
 			# If only the short version is requested, don't bother
 			# running further git commands
@@ -81,7 +81,7 @@
 
 		# Is this git on svn?
 		if git config --get svn-remote.svn.url >/dev/null; then
-			printf -- '-svn%s' "`git svn find-rev $head`"
+			printf -- '-svn%s' "$(git svn find-rev $head)"
 		fi
 
 		# Check for uncommitted changes.
@@ -102,15 +102,15 @@
 	fi
 
 	# Check for mercurial and a mercurial repo.
-	if test -d .hg && hgid=`hg id 2>/dev/null`; then
+	if test -d .hg && hgid=$(hg id 2>/dev/null); then
 		# Do we have an tagged version?  If so, latesttagdistance == 1
-		if [ "`hg log -r . --template '{latesttagdistance}'`" = "1" ]; then
-			id=`hg log -r . --template '{latesttag}'`
+		if [ "$(hg log -r . --template '{latesttagdistance}')" = "1" ]; then
+			id=$(hg log -r . --template '{latesttag}')
 			printf '%s%s' -hg "$id"
 		else
-			tag=`printf '%s' "$hgid" | cut -d' ' -f2`
+			tag=$(printf '%s' "$hgid" | cut -d' ' -f2)
 			if [ -z "$tag" -o "$tag" = tip ]; then
-				id=`printf '%s' "$hgid" | sed 's/[+ ].*//'`
+				id=$(printf '%s' "$hgid" | sed 's/[+ ].*//')
 				printf '%s%s' -hg "$id"
 			fi
 		fi
@@ -126,8 +126,8 @@
 	fi
 
 	# Check for svn and a svn repo.
-	if rev=`LANG= LC_ALL= LC_MESSAGES=C svn info 2>/dev/null | grep '^Last Changed Rev'`; then
-		rev=`echo $rev | awk '{print $NF}'`
+	if rev=$(LANG= LC_ALL= LC_MESSAGES=C svn info 2>/dev/null | grep '^Last Changed Rev'); then
+		rev=$(echo $rev | awk '{print $NF}')
 		printf -- '-svn%s' "$rev"
 
 		# All done with svn
diff --git a/scripts/sortextable.h b/scripts/sortextable.h
deleted file mode 100644
index d4b3f6c..0000000
--- a/scripts/sortextable.h
+++ /dev/null
@@ -1,209 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0-only */
-/*
- * sortextable.h
- *
- * Copyright 2011 - 2012 Cavium, Inc.
- *
- * Some of this code was taken out of recordmcount.h written by:
- *
- * Copyright 2009 John F. Reiser <jreiser@BitWagon.com>.  All rights reserved.
- * Copyright 2010 Steven Rostedt <srostedt@redhat.com>, Red Hat Inc.
- */
-
-#undef extable_ent_size
-#undef compare_extable
-#undef do_func
-#undef Elf_Addr
-#undef Elf_Ehdr
-#undef Elf_Shdr
-#undef Elf_Rel
-#undef Elf_Rela
-#undef Elf_Sym
-#undef ELF_R_SYM
-#undef Elf_r_sym
-#undef ELF_R_INFO
-#undef Elf_r_info
-#undef ELF_ST_BIND
-#undef ELF_ST_TYPE
-#undef fn_ELF_R_SYM
-#undef fn_ELF_R_INFO
-#undef uint_t
-#undef _r
-#undef _w
-
-#ifdef SORTEXTABLE_64
-# define extable_ent_size	16
-# define compare_extable	compare_extable_64
-# define do_func		do64
-# define Elf_Addr		Elf64_Addr
-# define Elf_Ehdr		Elf64_Ehdr
-# define Elf_Shdr		Elf64_Shdr
-# define Elf_Rel		Elf64_Rel
-# define Elf_Rela		Elf64_Rela
-# define Elf_Sym		Elf64_Sym
-# define ELF_R_SYM		ELF64_R_SYM
-# define Elf_r_sym		Elf64_r_sym
-# define ELF_R_INFO		ELF64_R_INFO
-# define Elf_r_info		Elf64_r_info
-# define ELF_ST_BIND		ELF64_ST_BIND
-# define ELF_ST_TYPE		ELF64_ST_TYPE
-# define fn_ELF_R_SYM		fn_ELF64_R_SYM
-# define fn_ELF_R_INFO		fn_ELF64_R_INFO
-# define uint_t			uint64_t
-# define _r			r8
-# define _w			w8
-#else
-# define extable_ent_size	8
-# define compare_extable	compare_extable_32
-# define do_func		do32
-# define Elf_Addr		Elf32_Addr
-# define Elf_Ehdr		Elf32_Ehdr
-# define Elf_Shdr		Elf32_Shdr
-# define Elf_Rel		Elf32_Rel
-# define Elf_Rela		Elf32_Rela
-# define Elf_Sym		Elf32_Sym
-# define ELF_R_SYM		ELF32_R_SYM
-# define Elf_r_sym		Elf32_r_sym
-# define ELF_R_INFO		ELF32_R_INFO
-# define Elf_r_info		Elf32_r_info
-# define ELF_ST_BIND		ELF32_ST_BIND
-# define ELF_ST_TYPE		ELF32_ST_TYPE
-# define fn_ELF_R_SYM		fn_ELF32_R_SYM
-# define fn_ELF_R_INFO		fn_ELF32_R_INFO
-# define uint_t			uint32_t
-# define _r			r
-# define _w			w
-#endif
-
-static int compare_extable(const void *a, const void *b)
-{
-	Elf_Addr av = _r(a);
-	Elf_Addr bv = _r(b);
-
-	if (av < bv)
-		return -1;
-	if (av > bv)
-		return 1;
-	return 0;
-}
-
-static void
-do_func(Elf_Ehdr *ehdr, char const *const fname, table_sort_t custom_sort)
-{
-	Elf_Shdr *shdr;
-	Elf_Shdr *shstrtab_sec;
-	Elf_Shdr *strtab_sec = NULL;
-	Elf_Shdr *symtab_sec = NULL;
-	Elf_Shdr *extab_sec = NULL;
-	Elf_Sym *sym;
-	const Elf_Sym *symtab;
-	Elf32_Word *symtab_shndx_start = NULL;
-	Elf_Sym *sort_needed_sym;
-	Elf_Shdr *sort_needed_sec;
-	Elf_Rel *relocs = NULL;
-	int relocs_size = 0;
-	uint32_t *sort_done_location;
-	const char *secstrtab;
-	const char *strtab;
-	char *extab_image;
-	int extab_index = 0;
-	int i;
-	int idx;
-	unsigned int num_sections;
-	unsigned int secindex_strings;
-
-	shdr = (Elf_Shdr *)((char *)ehdr + _r(&ehdr->e_shoff));
-
-	num_sections = r2(&ehdr->e_shnum);
-	if (num_sections == SHN_UNDEF)
-		num_sections = _r(&shdr[0].sh_size);
-
-	secindex_strings = r2(&ehdr->e_shstrndx);
-	if (secindex_strings == SHN_XINDEX)
-		secindex_strings = r(&shdr[0].sh_link);
-
-	shstrtab_sec = shdr + secindex_strings;
-	secstrtab = (const char *)ehdr + _r(&shstrtab_sec->sh_offset);
-	for (i = 0; i < num_sections; i++) {
-		idx = r(&shdr[i].sh_name);
-		if (strcmp(secstrtab + idx, "__ex_table") == 0) {
-			extab_sec = shdr + i;
-			extab_index = i;
-		}
-		if ((r(&shdr[i].sh_type) == SHT_REL ||
-		     r(&shdr[i].sh_type) == SHT_RELA) &&
-		    r(&shdr[i].sh_info) == extab_index) {
-			relocs = (void *)ehdr + _r(&shdr[i].sh_offset);
-			relocs_size = _r(&shdr[i].sh_size);
-		}
-		if (strcmp(secstrtab + idx, ".symtab") == 0)
-			symtab_sec = shdr + i;
-		if (strcmp(secstrtab + idx, ".strtab") == 0)
-			strtab_sec = shdr + i;
-		if (r(&shdr[i].sh_type) == SHT_SYMTAB_SHNDX)
-			symtab_shndx_start = (Elf32_Word *)(
-				(const char *)ehdr + _r(&shdr[i].sh_offset));
-	}
-	if (strtab_sec == NULL) {
-		fprintf(stderr,	"no .strtab in  file: %s\n", fname);
-		fail_file();
-	}
-	if (symtab_sec == NULL) {
-		fprintf(stderr,	"no .symtab in  file: %s\n", fname);
-		fail_file();
-	}
-	symtab = (const Elf_Sym *)((const char *)ehdr +
-				   _r(&symtab_sec->sh_offset));
-	if (extab_sec == NULL) {
-		fprintf(stderr,	"no __ex_table in  file: %s\n", fname);
-		fail_file();
-	}
-	strtab = (const char *)ehdr + _r(&strtab_sec->sh_offset);
-
-	extab_image = (void *)ehdr + _r(&extab_sec->sh_offset);
-
-	if (custom_sort) {
-		custom_sort(extab_image, _r(&extab_sec->sh_size));
-	} else {
-		int num_entries = _r(&extab_sec->sh_size) / extable_ent_size;
-		qsort(extab_image, num_entries,
-		      extable_ent_size, compare_extable);
-	}
-	/* If there were relocations, we no longer need them. */
-	if (relocs)
-		memset(relocs, 0, relocs_size);
-
-	/* find main_extable_sort_needed */
-	sort_needed_sym = NULL;
-	for (i = 0; i < _r(&symtab_sec->sh_size) / sizeof(Elf_Sym); i++) {
-		sym = (void *)ehdr + _r(&symtab_sec->sh_offset);
-		sym += i;
-		if (ELF_ST_TYPE(sym->st_info) != STT_OBJECT)
-			continue;
-		idx = r(&sym->st_name);
-		if (strcmp(strtab + idx, "main_extable_sort_needed") == 0) {
-			sort_needed_sym = sym;
-			break;
-		}
-	}
-	if (sort_needed_sym == NULL) {
-		fprintf(stderr,
-			"no main_extable_sort_needed symbol in  file: %s\n",
-			fname);
-		fail_file();
-	}
-	sort_needed_sec = &shdr[get_secindex(r2(&sym->st_shndx),
-					     sort_needed_sym - symtab,
-					     symtab_shndx_start)];
-	sort_done_location = (void *)ehdr +
-		_r(&sort_needed_sec->sh_offset) +
-		_r(&sort_needed_sym->st_value) -
-		_r(&sort_needed_sec->sh_addr);
-
-#if 0
-	printf("sort done marker at %lx\n",
-	       (unsigned long)((char *)sort_done_location - (char *)ehdr));
-#endif
-	/* We sorted it, clear the flag. */
-	w(0, sort_done_location);
-}
diff --git a/scripts/sortextable.c b/scripts/sorttable.c
similarity index 64%
rename from scripts/sortextable.c
rename to scripts/sorttable.c
index 5576865..0ef3abf 100644
--- a/scripts/sortextable.c
+++ b/scripts/sorttable.c
@@ -1,6 +1,10 @@
 // SPDX-License-Identifier: GPL-2.0-only
 /*
- * sortextable.c: Sort the kernel's exception table
+ * sorttable.c: Sort the kernel's table
+ *
+ * Added ORC unwind tables sort support and other updates:
+ * Copyright (C) 1999-2019 Alibaba Group Holding Limited. by:
+ * Shile Zhang <shile.zhang@linux.alibaba.com>
  *
  * Copyright 2011 - 2012 Cavium, Inc.
  *
@@ -9,7 +13,7 @@
  * Copyright 2009 John F. Reiser <jreiser@BitWagon.com>.  All rights reserved.
  *
  * Restructured to fit Linux format, as well as other updates:
- *  Copyright 2010 Steven Rostedt <srostedt@redhat.com>, Red Hat Inc.
+ * Copyright 2010 Steven Rostedt <srostedt@redhat.com>, Red Hat Inc.
  */
 
 /*
@@ -22,7 +26,6 @@
 #include <getopt.h>
 #include <elf.h>
 #include <fcntl.h>
-#include <setjmp.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
@@ -51,34 +54,13 @@
 #define EM_ARCV2	195
 #endif
 
-static int fd_map;	/* File descriptor for file being modified. */
-static int mmap_failed; /* Boolean flag. */
-static void *ehdr_curr; /* current ElfXX_Ehdr *  for resource cleanup */
-static struct stat sb;	/* Remember .st_size, etc. */
-static jmp_buf jmpenv;	/* setjmp/longjmp per-file error escape */
-
-/* setjmp() return values */
-enum {
-	SJ_SETJMP = 0,  /* hardwired first return */
-	SJ_FAIL,
-	SJ_SUCCEED
-};
-
-/* Per-file resource cleanup when multiple files. */
-static void
-cleanup(void)
-{
-	if (!mmap_failed)
-		munmap(ehdr_curr, sb.st_size);
-	close(fd_map);
-}
-
-static void __attribute__((noreturn))
-fail_file(void)
-{
-	cleanup();
-	longjmp(jmpenv, SJ_FAIL);
-}
+static uint32_t (*r)(const uint32_t *);
+static uint16_t (*r2)(const uint16_t *);
+static uint64_t (*r8)(const uint64_t *);
+static void (*w)(uint32_t, uint32_t *);
+static void (*w2)(uint16_t, uint16_t *);
+static void (*w8)(uint64_t, uint64_t *);
+typedef void (*table_sort_t)(char *, int);
 
 /*
  * Get the whole file as a programming convenience in order to avoid
@@ -86,87 +68,98 @@
  * avoids copying unused pieces; else just read the whole file.
  * Open for both read and write.
  */
-static void *mmap_file(char const *fname)
+static void *mmap_file(char const *fname, size_t *size)
 {
-	void *addr;
+	int fd;
+	struct stat sb;
+	void *addr = NULL;
 
-	fd_map = open(fname, O_RDWR);
-	if (fd_map < 0 || fstat(fd_map, &sb) < 0) {
+	fd = open(fname, O_RDWR);
+	if (fd < 0) {
 		perror(fname);
-		fail_file();
+		return NULL;
+	}
+	if (fstat(fd, &sb) < 0) {
+		perror(fname);
+		goto out;
 	}
 	if (!S_ISREG(sb.st_mode)) {
 		fprintf(stderr, "not a regular file: %s\n", fname);
-		fail_file();
+		goto out;
 	}
-	addr = mmap(0, sb.st_size, PROT_READ|PROT_WRITE, MAP_SHARED,
-		    fd_map, 0);
+
+	addr = mmap(0, sb.st_size, PROT_READ|PROT_WRITE, MAP_SHARED, fd, 0);
 	if (addr == MAP_FAILED) {
-		mmap_failed = 1;
 		fprintf(stderr, "Could not mmap file: %s\n", fname);
-		fail_file();
+		goto out;
 	}
+
+	*size = sb.st_size;
+
+out:
+	close(fd);
 	return addr;
 }
 
+static uint32_t rbe(const uint32_t *x)
+{
+	return get_unaligned_be32(x);
+}
+
+static uint16_t r2be(const uint16_t *x)
+{
+	return get_unaligned_be16(x);
+}
+
 static uint64_t r8be(const uint64_t *x)
 {
 	return get_unaligned_be64(x);
 }
-static uint32_t rbe(const uint32_t *x)
-{
-	return get_unaligned_be32(x);
-}
-static uint16_t r2be(const uint16_t *x)
-{
-	return get_unaligned_be16(x);
-}
-static uint64_t r8le(const uint64_t *x)
-{
-	return get_unaligned_le64(x);
-}
+
 static uint32_t rle(const uint32_t *x)
 {
 	return get_unaligned_le32(x);
 }
+
 static uint16_t r2le(const uint16_t *x)
 {
 	return get_unaligned_le16(x);
 }
 
+static uint64_t r8le(const uint64_t *x)
+{
+	return get_unaligned_le64(x);
+}
+
+static void wbe(uint32_t val, uint32_t *x)
+{
+	put_unaligned_be32(val, x);
+}
+
+static void w2be(uint16_t val, uint16_t *x)
+{
+	put_unaligned_be16(val, x);
+}
+
 static void w8be(uint64_t val, uint64_t *x)
 {
 	put_unaligned_be64(val, x);
 }
-static void wbe(uint32_t val, uint32_t *x)
-{
-	put_unaligned_be32(val, x);
-}
-static void w2be(uint16_t val, uint16_t *x)
-{
-	put_unaligned_be16(val, x);
-}
-static void w8le(uint64_t val, uint64_t *x)
-{
-	put_unaligned_le64(val, x);
-}
+
 static void wle(uint32_t val, uint32_t *x)
 {
 	put_unaligned_le32(val, x);
 }
+
 static void w2le(uint16_t val, uint16_t *x)
 {
 	put_unaligned_le16(val, x);
 }
 
-static uint64_t (*r8)(const uint64_t *);
-static uint32_t (*r)(const uint32_t *);
-static uint16_t (*r2)(const uint16_t *);
-static void (*w8)(uint64_t, uint64_t *);
-static void (*w)(uint32_t, uint32_t *);
-static void (*w2)(uint16_t, uint16_t *);
-
-typedef void (*table_sort_t)(char *, int);
+static void w8le(uint64_t val, uint64_t *x)
+{
+	put_unaligned_le64(val, x);
+}
 
 /*
  * Move reserved section indices SHN_LORESERVE..SHN_HIRESERVE out of
@@ -193,9 +186,9 @@
 }
 
 /* 32 bit and 64 bit are very similar */
-#include "sortextable.h"
-#define SORTEXTABLE_64
-#include "sortextable.h"
+#include "sorttable.h"
+#define SORTTABLE_64
+#include "sorttable.h"
 
 static int compare_relative_table(const void *a, const void *b)
 {
@@ -209,11 +202,35 @@
 	return 0;
 }
 
+static void sort_relative_table(char *extab_image, int image_size)
+{
+	int i = 0;
+
+	/*
+	 * Do the same thing the runtime sort does, first normalize to
+	 * being relative to the start of the section.
+	 */
+	while (i < image_size) {
+		uint32_t *loc = (uint32_t *)(extab_image + i);
+		w(r(loc) + i, loc);
+		i += 4;
+	}
+
+	qsort(extab_image, image_size / 8, 8, compare_relative_table);
+
+	/* Now denormalize. */
+	i = 0;
+	while (i < image_size) {
+		uint32_t *loc = (uint32_t *)(extab_image + i);
+		w(r(loc) - i, loc);
+		i += 4;
+	}
+}
+
 static void x86_sort_relative_table(char *extab_image, int image_size)
 {
-	int i;
+	int i = 0;
 
-	i = 0;
 	while (i < image_size) {
 		uint32_t *loc = (uint32_t *)(extab_image + i);
 
@@ -238,82 +255,89 @@
 	}
 }
 
-static void sort_relative_table(char *extab_image, int image_size)
+static void s390_sort_relative_table(char *extab_image, int image_size)
 {
 	int i;
 
-	/*
-	 * Do the same thing the runtime sort does, first normalize to
-	 * being relative to the start of the section.
-	 */
-	i = 0;
-	while (i < image_size) {
-		uint32_t *loc = (uint32_t *)(extab_image + i);
-		w(r(loc) + i, loc);
-		i += 4;
+	for (i = 0; i < image_size; i += 16) {
+		char *loc = extab_image + i;
+		uint64_t handler;
+
+		w(r((uint32_t *)loc) + i, (uint32_t *)loc);
+		w(r((uint32_t *)(loc + 4)) + (i + 4), (uint32_t *)(loc + 4));
+		/*
+		 * 0 is a special self-relative handler value, which means that
+		 * handler should be ignored. It is safe, because it means that
+		 * handler field points to itself, which should never happen.
+		 * When creating extable-relative values, keep it as 0, since
+		 * this should never occur either: it would mean that handler
+		 * field points to the first extable entry.
+		 */
+		handler = r8((uint64_t *)(loc + 8));
+		if (handler)
+			handler += i + 8;
+		w8(handler, (uint64_t *)(loc + 8));
 	}
 
-	qsort(extab_image, image_size / 8, 8, compare_relative_table);
+	qsort(extab_image, image_size / 16, 16, compare_relative_table);
 
-	/* Now denormalize. */
-	i = 0;
-	while (i < image_size) {
-		uint32_t *loc = (uint32_t *)(extab_image + i);
-		w(r(loc) - i, loc);
-		i += 4;
+	for (i = 0; i < image_size; i += 16) {
+		char *loc = extab_image + i;
+		uint64_t handler;
+
+		w(r((uint32_t *)loc) - i, (uint32_t *)loc);
+		w(r((uint32_t *)(loc + 4)) - (i + 4), (uint32_t *)(loc + 4));
+		handler = r8((uint64_t *)(loc + 8));
+		if (handler)
+			handler -= i + 8;
+		w8(handler, (uint64_t *)(loc + 8));
 	}
 }
 
-static void
-do_file(char const *const fname)
+static int do_file(char const *const fname, void *addr)
 {
-	table_sort_t custom_sort;
-	Elf32_Ehdr *ehdr = mmap_file(fname);
+	int rc = -1;
+	Elf32_Ehdr *ehdr = addr;
+	table_sort_t custom_sort = NULL;
 
-	ehdr_curr = ehdr;
 	switch (ehdr->e_ident[EI_DATA]) {
+	case ELFDATA2LSB:
+		r	= rle;
+		r2	= r2le;
+		r8	= r8le;
+		w	= wle;
+		w2	= w2le;
+		w8	= w8le;
+		break;
+	case ELFDATA2MSB:
+		r	= rbe;
+		r2	= r2be;
+		r8	= r8be;
+		w	= wbe;
+		w2	= w2be;
+		w8	= w8be;
+		break;
 	default:
 		fprintf(stderr, "unrecognized ELF data encoding %d: %s\n",
 			ehdr->e_ident[EI_DATA], fname);
-		fail_file();
-		break;
-	case ELFDATA2LSB:
-		r = rle;
-		r2 = r2le;
-		r8 = r8le;
-		w = wle;
-		w2 = w2le;
-		w8 = w8le;
-		break;
-	case ELFDATA2MSB:
-		r = rbe;
-		r2 = r2be;
-		r8 = r8be;
-		w = wbe;
-		w2 = w2be;
-		w8 = w8be;
-		break;
-	}  /* end switch */
-	if (memcmp(ELFMAG, ehdr->e_ident, SELFMAG) != 0
-	||  (r2(&ehdr->e_type) != ET_EXEC && r2(&ehdr->e_type) != ET_DYN)
-	||  ehdr->e_ident[EI_VERSION] != EV_CURRENT) {
-		fprintf(stderr, "unrecognized ET_EXEC/ET_DYN file %s\n", fname);
-		fail_file();
+		return -1;
 	}
 
-	custom_sort = NULL;
+	if (memcmp(ELFMAG, ehdr->e_ident, SELFMAG) != 0 ||
+	    (r2(&ehdr->e_type) != ET_EXEC && r2(&ehdr->e_type) != ET_DYN) ||
+	    ehdr->e_ident[EI_VERSION] != EV_CURRENT) {
+		fprintf(stderr, "unrecognized ET_EXEC/ET_DYN file %s\n", fname);
+		return -1;
+	}
+
 	switch (r2(&ehdr->e_machine)) {
-	default:
-		fprintf(stderr, "unrecognized e_machine %d %s\n",
-			r2(&ehdr->e_machine), fname);
-		fail_file();
-		break;
 	case EM_386:
 	case EM_X86_64:
 		custom_sort = x86_sort_relative_table;
 		break;
-
 	case EM_S390:
+		custom_sort = s390_sort_relative_table;
+		break;
 	case EM_AARCH64:
 	case EM_PARISC:
 	case EM_PPC:
@@ -327,74 +351,68 @@
 	case EM_MIPS:
 	case EM_XTENSA:
 		break;
-	}  /* end switch */
+	default:
+		fprintf(stderr, "unrecognized e_machine %d %s\n",
+			r2(&ehdr->e_machine), fname);
+		return -1;
+	}
 
 	switch (ehdr->e_ident[EI_CLASS]) {
+	case ELFCLASS32:
+		if (r2(&ehdr->e_ehsize) != sizeof(Elf32_Ehdr) ||
+		    r2(&ehdr->e_shentsize) != sizeof(Elf32_Shdr)) {
+			fprintf(stderr,
+				"unrecognized ET_EXEC/ET_DYN file: %s\n", fname);
+			break;
+		}
+		rc = do_sort_32(ehdr, fname, custom_sort);
+		break;
+	case ELFCLASS64:
+		{
+		Elf64_Ehdr *const ghdr = (Elf64_Ehdr *)ehdr;
+		if (r2(&ghdr->e_ehsize) != sizeof(Elf64_Ehdr) ||
+		    r2(&ghdr->e_shentsize) != sizeof(Elf64_Shdr)) {
+			fprintf(stderr,
+				"unrecognized ET_EXEC/ET_DYN file: %s\n",
+				fname);
+			break;
+		}
+		rc = do_sort_64(ghdr, fname, custom_sort);
+		}
+		break;
 	default:
 		fprintf(stderr, "unrecognized ELF class %d %s\n",
 			ehdr->e_ident[EI_CLASS], fname);
-		fail_file();
-		break;
-	case ELFCLASS32:
-		if (r2(&ehdr->e_ehsize) != sizeof(Elf32_Ehdr)
-		||  r2(&ehdr->e_shentsize) != sizeof(Elf32_Shdr)) {
-			fprintf(stderr,
-				"unrecognized ET_EXEC/ET_DYN file: %s\n", fname);
-			fail_file();
-		}
-		do32(ehdr, fname, custom_sort);
-		break;
-	case ELFCLASS64: {
-		Elf64_Ehdr *const ghdr = (Elf64_Ehdr *)ehdr;
-		if (r2(&ghdr->e_ehsize) != sizeof(Elf64_Ehdr)
-		||  r2(&ghdr->e_shentsize) != sizeof(Elf64_Shdr)) {
-			fprintf(stderr,
-				"unrecognized ET_EXEC/ET_DYN file: %s\n", fname);
-			fail_file();
-		}
-		do64(ghdr, fname, custom_sort);
 		break;
 	}
-	}  /* end switch */
 
-	cleanup();
+	return rc;
 }
 
-int
-main(int argc, char *argv[])
+int main(int argc, char *argv[])
 {
-	int n_error = 0;  /* gcc-4.3.0 false positive complaint */
-	int i;
+	int i, n_error = 0;  /* gcc-4.3.0 false positive complaint */
+	size_t size = 0;
+	void *addr = NULL;
 
 	if (argc < 2) {
-		fprintf(stderr, "usage: sortextable vmlinux...\n");
+		fprintf(stderr, "usage: sorttable vmlinux...\n");
 		return 0;
 	}
 
 	/* Process each file in turn, allowing deep failure. */
 	for (i = 1; i < argc; i++) {
-		char *file = argv[i];
-		int const sjval = setjmp(jmpenv);
-
-		switch (sjval) {
-		default:
-			fprintf(stderr, "internal error: %s\n", file);
-			exit(1);
-			break;
-		case SJ_SETJMP:    /* normal sequence */
-			/* Avoid problems if early cleanup() */
-			fd_map = -1;
-			ehdr_curr = NULL;
-			mmap_failed = 1;
-			do_file(file);
-			break;
-		case SJ_FAIL:    /* error in do_file or below */
+		addr = mmap_file(argv[i], &size);
+		if (!addr) {
 			++n_error;
-			break;
-		case SJ_SUCCEED:    /* premature success */
-			/* do nothing */
-			break;
-		}  /* end switch */
+			continue;
+		}
+
+		if (do_file(argv[i], addr))
+			++n_error;
+
+		munmap(addr, size);
 	}
+
 	return !!n_error;
 }
diff --git a/scripts/sorttable.h b/scripts/sorttable.h
new file mode 100644
index 0000000..a2baa2f
--- /dev/null
+++ b/scripts/sorttable.h
@@ -0,0 +1,380 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * sorttable.h
+ *
+ * Added ORC unwind tables sort support and other updates:
+ * Copyright (C) 1999-2019 Alibaba Group Holding Limited. by:
+ * Shile Zhang <shile.zhang@linux.alibaba.com>
+ *
+ * Copyright 2011 - 2012 Cavium, Inc.
+ *
+ * Some of code was taken out of arch/x86/kernel/unwind_orc.c, written by:
+ * Copyright (C) 2017 Josh Poimboeuf <jpoimboe@redhat.com>
+ *
+ * Some of this code was taken out of recordmcount.h written by:
+ *
+ * Copyright 2009 John F. Reiser <jreiser@BitWagon.com>. All rights reserved.
+ * Copyright 2010 Steven Rostedt <srostedt@redhat.com>, Red Hat Inc.
+ */
+
+#undef extable_ent_size
+#undef compare_extable
+#undef do_sort
+#undef Elf_Addr
+#undef Elf_Ehdr
+#undef Elf_Shdr
+#undef Elf_Rel
+#undef Elf_Rela
+#undef Elf_Sym
+#undef ELF_R_SYM
+#undef Elf_r_sym
+#undef ELF_R_INFO
+#undef Elf_r_info
+#undef ELF_ST_BIND
+#undef ELF_ST_TYPE
+#undef fn_ELF_R_SYM
+#undef fn_ELF_R_INFO
+#undef uint_t
+#undef _r
+#undef _w
+
+#ifdef SORTTABLE_64
+# define extable_ent_size	16
+# define compare_extable	compare_extable_64
+# define do_sort		do_sort_64
+# define Elf_Addr		Elf64_Addr
+# define Elf_Ehdr		Elf64_Ehdr
+# define Elf_Shdr		Elf64_Shdr
+# define Elf_Rel		Elf64_Rel
+# define Elf_Rela		Elf64_Rela
+# define Elf_Sym		Elf64_Sym
+# define ELF_R_SYM		ELF64_R_SYM
+# define Elf_r_sym		Elf64_r_sym
+# define ELF_R_INFO		ELF64_R_INFO
+# define Elf_r_info		Elf64_r_info
+# define ELF_ST_BIND		ELF64_ST_BIND
+# define ELF_ST_TYPE		ELF64_ST_TYPE
+# define fn_ELF_R_SYM		fn_ELF64_R_SYM
+# define fn_ELF_R_INFO		fn_ELF64_R_INFO
+# define uint_t			uint64_t
+# define _r			r8
+# define _w			w8
+#else
+# define extable_ent_size	8
+# define compare_extable	compare_extable_32
+# define do_sort		do_sort_32
+# define Elf_Addr		Elf32_Addr
+# define Elf_Ehdr		Elf32_Ehdr
+# define Elf_Shdr		Elf32_Shdr
+# define Elf_Rel		Elf32_Rel
+# define Elf_Rela		Elf32_Rela
+# define Elf_Sym		Elf32_Sym
+# define ELF_R_SYM		ELF32_R_SYM
+# define Elf_r_sym		Elf32_r_sym
+# define ELF_R_INFO		ELF32_R_INFO
+# define Elf_r_info		Elf32_r_info
+# define ELF_ST_BIND		ELF32_ST_BIND
+# define ELF_ST_TYPE		ELF32_ST_TYPE
+# define fn_ELF_R_SYM		fn_ELF32_R_SYM
+# define fn_ELF_R_INFO		fn_ELF32_R_INFO
+# define uint_t			uint32_t
+# define _r			r
+# define _w			w
+#endif
+
+#if defined(SORTTABLE_64) && defined(UNWINDER_ORC_ENABLED)
+/* ORC unwinder only support X86_64 */
+#include <errno.h>
+#include <pthread.h>
+#include <asm/orc_types.h>
+
+#define ERRSTR_MAXSZ	256
+
+char g_err[ERRSTR_MAXSZ];
+int *g_orc_ip_table;
+struct orc_entry *g_orc_table;
+
+pthread_t orc_sort_thread;
+
+static inline unsigned long orc_ip(const int *ip)
+{
+	return (unsigned long)ip + *ip;
+}
+
+static int orc_sort_cmp(const void *_a, const void *_b)
+{
+	struct orc_entry *orc_a;
+	const int *a = g_orc_ip_table + *(int *)_a;
+	const int *b = g_orc_ip_table + *(int *)_b;
+	unsigned long a_val = orc_ip(a);
+	unsigned long b_val = orc_ip(b);
+
+	if (a_val > b_val)
+		return 1;
+	if (a_val < b_val)
+		return -1;
+
+	/*
+	 * The "weak" section terminator entries need to always be on the left
+	 * to ensure the lookup code skips them in favor of real entries.
+	 * These terminator entries exist to handle any gaps created by
+	 * whitelisted .o files which didn't get objtool generation.
+	 */
+	orc_a = g_orc_table + (a - g_orc_ip_table);
+	return orc_a->sp_reg == ORC_REG_UNDEFINED && !orc_a->end ? -1 : 1;
+}
+
+static void *sort_orctable(void *arg)
+{
+	int i;
+	int *idxs = NULL;
+	int *tmp_orc_ip_table = NULL;
+	struct orc_entry *tmp_orc_table = NULL;
+	unsigned int *orc_ip_size = (unsigned int *)arg;
+	unsigned int num_entries = *orc_ip_size / sizeof(int);
+	unsigned int orc_size = num_entries * sizeof(struct orc_entry);
+
+	idxs = (int *)malloc(*orc_ip_size);
+	if (!idxs) {
+		snprintf(g_err, ERRSTR_MAXSZ, "malloc idxs: %s",
+			 strerror(errno));
+		pthread_exit(g_err);
+	}
+
+	tmp_orc_ip_table = (int *)malloc(*orc_ip_size);
+	if (!tmp_orc_ip_table) {
+		snprintf(g_err, ERRSTR_MAXSZ, "malloc tmp_orc_ip_table: %s",
+			 strerror(errno));
+		pthread_exit(g_err);
+	}
+
+	tmp_orc_table = (struct orc_entry *)malloc(orc_size);
+	if (!tmp_orc_table) {
+		snprintf(g_err, ERRSTR_MAXSZ, "malloc tmp_orc_table: %s",
+			 strerror(errno));
+		pthread_exit(g_err);
+	}
+
+	/* initialize indices array, convert ip_table to absolute address */
+	for (i = 0; i < num_entries; i++) {
+		idxs[i] = i;
+		tmp_orc_ip_table[i] = g_orc_ip_table[i] + i * sizeof(int);
+	}
+	memcpy(tmp_orc_table, g_orc_table, orc_size);
+
+	qsort(idxs, num_entries, sizeof(int), orc_sort_cmp);
+
+	for (i = 0; i < num_entries; i++) {
+		if (idxs[i] == i)
+			continue;
+
+		/* convert back to relative address */
+		g_orc_ip_table[i] = tmp_orc_ip_table[idxs[i]] - i * sizeof(int);
+		g_orc_table[i] = tmp_orc_table[idxs[i]];
+	}
+
+	free(idxs);
+	free(tmp_orc_ip_table);
+	free(tmp_orc_table);
+	pthread_exit(NULL);
+}
+#endif
+
+static int compare_extable(const void *a, const void *b)
+{
+	Elf_Addr av = _r(a);
+	Elf_Addr bv = _r(b);
+
+	if (av < bv)
+		return -1;
+	if (av > bv)
+		return 1;
+	return 0;
+}
+
+static int do_sort(Elf_Ehdr *ehdr,
+		   char const *const fname,
+		   table_sort_t custom_sort)
+{
+	int rc = -1;
+	Elf_Shdr *s, *shdr = (Elf_Shdr *)((char *)ehdr + _r(&ehdr->e_shoff));
+	Elf_Shdr *strtab_sec = NULL;
+	Elf_Shdr *symtab_sec = NULL;
+	Elf_Shdr *extab_sec = NULL;
+	Elf_Sym *sym;
+	const Elf_Sym *symtab;
+	Elf32_Word *symtab_shndx = NULL;
+	Elf_Sym *sort_needed_sym = NULL;
+	Elf_Shdr *sort_needed_sec;
+	Elf_Rel *relocs = NULL;
+	int relocs_size = 0;
+	uint32_t *sort_needed_loc;
+	const char *secstrings;
+	const char *strtab;
+	char *extab_image;
+	int extab_index = 0;
+	int i;
+	int idx;
+	unsigned int shnum;
+	unsigned int shstrndx;
+#if defined(SORTTABLE_64) && defined(UNWINDER_ORC_ENABLED)
+	unsigned int orc_ip_size = 0;
+	unsigned int orc_size = 0;
+	unsigned int orc_num_entries = 0;
+#endif
+
+	shstrndx = r2(&ehdr->e_shstrndx);
+	if (shstrndx == SHN_XINDEX)
+		shstrndx = r(&shdr[0].sh_link);
+	secstrings = (const char *)ehdr + _r(&shdr[shstrndx].sh_offset);
+
+	shnum = r2(&ehdr->e_shnum);
+	if (shnum == SHN_UNDEF)
+		shnum = _r(&shdr[0].sh_size);
+
+	for (i = 0, s = shdr; s < shdr + shnum; i++, s++) {
+		idx = r(&s->sh_name);
+		if (!strcmp(secstrings + idx, "__ex_table")) {
+			extab_sec = s;
+			extab_index = i;
+		}
+		if (!strcmp(secstrings + idx, ".symtab"))
+			symtab_sec = s;
+		if (!strcmp(secstrings + idx, ".strtab"))
+			strtab_sec = s;
+
+		if ((r(&s->sh_type) == SHT_REL ||
+		     r(&s->sh_type) == SHT_RELA) &&
+		    r(&s->sh_info) == extab_index) {
+			relocs = (void *)ehdr + _r(&s->sh_offset);
+			relocs_size = _r(&s->sh_size);
+		}
+		if (r(&s->sh_type) == SHT_SYMTAB_SHNDX)
+			symtab_shndx = (Elf32_Word *)((const char *)ehdr +
+						      _r(&s->sh_offset));
+
+#if defined(SORTTABLE_64) && defined(UNWINDER_ORC_ENABLED)
+		/* locate the ORC unwind tables */
+		if (!strcmp(secstrings + idx, ".orc_unwind_ip")) {
+			orc_ip_size = s->sh_size;
+			g_orc_ip_table = (int *)((void *)ehdr +
+						   s->sh_offset);
+		}
+		if (!strcmp(secstrings + idx, ".orc_unwind")) {
+			orc_size = s->sh_size;
+			g_orc_table = (struct orc_entry *)((void *)ehdr +
+							     s->sh_offset);
+		}
+#endif
+	} /* for loop */
+
+#if defined(SORTTABLE_64) && defined(UNWINDER_ORC_ENABLED)
+	if (!g_orc_ip_table || !g_orc_table) {
+		fprintf(stderr,
+			"incomplete ORC unwind tables in file: %s\n", fname);
+		goto out;
+	}
+
+	orc_num_entries = orc_ip_size / sizeof(int);
+	if (orc_ip_size % sizeof(int) != 0 ||
+	    orc_size % sizeof(struct orc_entry) != 0 ||
+	    orc_num_entries != orc_size / sizeof(struct orc_entry)) {
+		fprintf(stderr,
+			"inconsistent ORC unwind table entries in file: %s\n",
+			fname);
+		goto out;
+	}
+
+	/* create thread to sort ORC unwind tables concurrently */
+	if (pthread_create(&orc_sort_thread, NULL,
+			   sort_orctable, &orc_ip_size)) {
+		fprintf(stderr,
+			"pthread_create orc_sort_thread failed '%s': %s\n",
+			strerror(errno), fname);
+		goto out;
+	}
+#endif
+	if (!extab_sec) {
+		fprintf(stderr,	"no __ex_table in file: %s\n", fname);
+		goto out;
+	}
+
+	if (!symtab_sec) {
+		fprintf(stderr,	"no .symtab in file: %s\n", fname);
+		goto out;
+	}
+
+	if (!strtab_sec) {
+		fprintf(stderr,	"no .strtab in file: %s\n", fname);
+		goto out;
+	}
+
+	extab_image = (void *)ehdr + _r(&extab_sec->sh_offset);
+	strtab = (const char *)ehdr + _r(&strtab_sec->sh_offset);
+	symtab = (const Elf_Sym *)((const char *)ehdr +
+						  _r(&symtab_sec->sh_offset));
+
+	if (custom_sort) {
+		custom_sort(extab_image, _r(&extab_sec->sh_size));
+	} else {
+		int num_entries = _r(&extab_sec->sh_size) / extable_ent_size;
+		qsort(extab_image, num_entries,
+		      extable_ent_size, compare_extable);
+	}
+
+	/* If there were relocations, we no longer need them. */
+	if (relocs)
+		memset(relocs, 0, relocs_size);
+
+	/* find the flag main_extable_sort_needed */
+	for (sym = (void *)ehdr + _r(&symtab_sec->sh_offset);
+	     sym < sym + _r(&symtab_sec->sh_size) / sizeof(Elf_Sym);
+	     sym++) {
+		if (ELF_ST_TYPE(sym->st_info) != STT_OBJECT)
+			continue;
+		if (!strcmp(strtab + r(&sym->st_name),
+			    "main_extable_sort_needed")) {
+			sort_needed_sym = sym;
+			break;
+		}
+	}
+
+	if (!sort_needed_sym) {
+		fprintf(stderr,
+			"no main_extable_sort_needed symbol in file: %s\n",
+			fname);
+		goto out;
+	}
+
+	sort_needed_sec = &shdr[get_secindex(r2(&sym->st_shndx),
+					     sort_needed_sym - symtab,
+					     symtab_shndx)];
+	sort_needed_loc = (void *)ehdr +
+		_r(&sort_needed_sec->sh_offset) +
+		_r(&sort_needed_sym->st_value) -
+		_r(&sort_needed_sec->sh_addr);
+
+	/* extable has been sorted, clear the flag */
+	w(0, sort_needed_loc);
+	rc = 0;
+
+out:
+#if defined(SORTTABLE_64) && defined(UNWINDER_ORC_ENABLED)
+	if (orc_sort_thread) {
+		void *retval = NULL;
+		/* wait for ORC tables sort done */
+		rc = pthread_join(orc_sort_thread, &retval);
+		if (rc)
+			fprintf(stderr,
+				"pthread_join failed '%s': %s\n",
+				strerror(errno), fname);
+		else if (retval) {
+			rc = -1;
+			fprintf(stderr,
+				"failed to sort ORC tables '%s': %s\n",
+				(char *)retval, fname);
+		}
+	}
+#endif
+	return rc;
+}
diff --git a/scripts/spdxcheck.py b/scripts/spdxcheck.py
index 6374e07..bc87200 100755
--- a/scripts/spdxcheck.py
+++ b/scripts/spdxcheck.py
@@ -180,6 +180,9 @@
                 # Remove trailing comment closure
                 if line.strip().endswith('*/'):
                     expr = expr.rstrip('*/').strip()
+                # Remove trailing xml comment closure
+                if line.strip().endswith('-->'):
+                    expr = expr.rstrip('-->').strip()
                 # Special case for SH magic boot code files
                 if line.startswith('LIST \"'):
                     expr = expr.rstrip('\"').strip()
diff --git a/scripts/spelling.txt b/scripts/spelling.txt
index de75b9f..953f4a2 100644
--- a/scripts/spelling.txt
+++ b/scripts/spelling.txt
@@ -9,6 +9,7 @@
 #
 abandonning||abandoning
 abigious||ambiguous
+abitrary||arbitrary
 abitrate||arbitrate
 abnornally||abnormally
 abnrormal||abnormal
@@ -39,6 +40,8 @@
 accquire||acquire
 accquired||acquired
 accross||across
+accumalate||accumulate
+accumalator||accumulator
 acessable||accessible
 acess||access
 acessing||accessing
@@ -57,6 +60,7 @@
 acumulating||accumulating
 acumulative||accumulative
 acumulator||accumulator
+acutally||actually
 adapater||adapter
 addional||additional
 additionaly||additionally
@@ -87,6 +91,7 @@
 algorithmical||algorithmically
 algoritm||algorithm
 algoritms||algorithms
+algorithmn||algorithm
 algorrithm||algorithm
 algorritm||algorithm
 aligment||alignment
@@ -105,10 +110,12 @@
 alot||a lot
 alow||allow
 alows||allows
+alreay||already
 alredy||already
 altough||although
 alue||value
 ambigious||ambiguous
+ambigous||ambiguous
 amoung||among
 amout||amount
 amplifer||amplifier
@@ -143,6 +150,7 @@
 architechture||architecture
 arguement||argument
 arguements||arguments
+arithmatic||arithmetic
 aritmetic||arithmetic
 arne't||aren't
 arraival||arrival
@@ -172,13 +180,16 @@
 atomicly||atomically
 atempt||attempt
 attachement||attachment
+attatch||attach
 attched||attached
+attemp||attempt
 attemps||attempts
 attemping||attempting
 attepmpt||attempt
 attnetion||attention
 attruibutes||attributes
 authentification||authentication
+authenicated||authenticated
 automaticaly||automatically
 automaticly||automatically
 automatize||automate
@@ -229,15 +240,19 @@
 brigde||bridge
 broadcase||broadcast
 broadcat||broadcast
+bufer||buffer
 bufufer||buffer
 cacluated||calculated
 caculate||calculate
 caculation||calculation
 cadidate||candidate
+cahces||caches
 calender||calendar
 calescing||coalescing
 calle||called
 callibration||calibration
+callled||called
+callser||caller
 calucate||calculate
 calulate||calculate
 cancelation||cancellation
@@ -286,6 +301,7 @@
 clared||cleared
 closeing||closing
 clustred||clustered
+cnfiguration||configuration
 coexistance||coexistence
 colescing||coalescing
 collapsable||collapsible
@@ -307,6 +323,7 @@
 comparsion||comparison
 compatability||compatibility
 compatable||compatible
+compatibililty||compatibility
 compatibiliy||compatibility
 compatibilty||compatibility
 compatiblity||compatibility
@@ -325,9 +342,11 @@
 comunication||communication
 conbination||combination
 conditionaly||conditionally
+conditon||condition
+condtion||condition
 conected||connected
 conector||connector
-connecetd||connected
+configration||configuration
 configuartion||configuration
 configuation||configuration
 configued||configured
@@ -337,7 +356,9 @@
 configutation||configuration
 conider||consider
 conjuction||conjunction
+connecetd||connected
 connectinos||connections
+connetor||connector
 connnection||connection
 connnections||connections
 consistancy||consistency
@@ -347,6 +368,7 @@
 contaisn||contains
 contant||contact
 contence||contents
+contiguos||contiguous
 continious||continuous
 continous||continuous
 continously||continuously
@@ -380,6 +402,9 @@
 dafault||default
 deafult||default
 deamon||daemon
+debouce||debounce
+decendant||descendant
+decendants||descendants
 decompres||decompress
 decsribed||described
 decription||description
@@ -403,11 +428,13 @@
 delares||declares
 delaring||declaring
 delemiter||delimiter
+delievered||delivered
 demodualtor||demodulator
 demension||dimension
 dependancies||dependencies
 dependancy||dependency
 dependant||dependent
+dependend||dependent
 depreacted||deprecated
 depreacte||deprecate
 desactivate||deactivate
@@ -429,6 +456,7 @@
 destroied||destroyed
 detabase||database
 deteced||detected
+detectt||detect
 develope||develop
 developement||development
 developped||developed
@@ -448,11 +476,14 @@
 differenciate||differentiate
 diffrentiate||differentiate
 difinition||definition
+digial||digital
 dimention||dimension
 dimesions||dimensions
+disgest||digest
 dispalying||displaying
 diplay||display
 directon||direction
+direcly||directly
 direectly||directly
 diregard||disregard
 disassocation||disassociation
@@ -489,6 +520,7 @@
 druing||during
 dynmaic||dynamic
 eanable||enable
+eanble||enable
 easilly||easily
 ecspecially||especially
 edditable||editable
@@ -502,6 +534,7 @@
 eletronic||electronic
 embeded||embedded
 enabledi||enabled
+enbale||enable
 enble||enable
 enchanced||enhanced
 encorporating||incorporating
@@ -516,6 +549,7 @@
 entites||entities
 entrys||entries
 enocded||encoded
+enought||enough
 enterily||entirely
 enviroiment||environment
 enviroment||environment
@@ -527,15 +561,20 @@
 equivilant||equivalent
 eror||error
 errorr||error
+errror||error
 estbalishment||establishment
 etsablishment||establishment
 etsbalishment||establishment
+evalution||evaluation
 excecutable||executable
 exceded||exceeded
+exceds||exceeds
+exceeed||exceed
 excellant||excellent
 execeeded||exceeded
 execeeds||exceeds
 exeed||exceed
+exeuction||execution
 existance||existence
 existant||existent
 exixt||exist
@@ -552,13 +591,13 @@
 expresion||expression
 exprimental||experimental
 extened||extended
+exteneded||extended
 extensability||extensibility
 extention||extension
 extenstion||extension
 extracter||extractor
 faied||failed
 faield||failed
-falied||failed
 faild||failed
 failded||failed
 failer||failure
@@ -579,10 +618,12 @@
 fetaure||feature
 fetaures||features
 fileystem||filesystem
+fimrware||firmware
 fimware||firmware
 firmare||firmware
 firmaware||firmware
 firware||firmware
+firwmare||firmware
 finanize||finalize
 findn||find
 finilizes||finalizes
@@ -601,10 +642,12 @@
 framming||framing
 framwork||framework
 frequncy||frequency
+frequancy||frequency
 frome||from
 fucntion||function
 fuction||function
 fuctions||functions
+fullill||fulfill
 funcation||function
 funcion||function
 functionallity||functionality
@@ -628,6 +671,7 @@
 grabing||grabbing
 grahical||graphical
 grahpical||graphical
+granularty||granularity
 grapic||graphic
 grranted||granted
 guage||gauge
@@ -640,8 +684,10 @@
 hanled||handled
 happend||happened
 harware||hardware
+havind||having
 heirarchically||hierarchically
 helpfull||helpful
+hexdecimal||hexadecimal
 hybernate||hibernate
 hierachy||hierarchy
 hierarchie||hierarchy
@@ -709,12 +755,15 @@
 initation||initiation
 initators||initiators
 initialiazation||initialization
+initializationg||initialization
 initializiation||initialization
 initialze||initialize
 initialzed||initialized
 initialzing||initializing
 initilization||initialization
 initilize||initialize
+initliaze||initialize
+initilized||initialized
 inofficial||unofficial
 inrerface||interface
 insititute||institute
@@ -745,7 +794,6 @@
 interrups||interrupts
 interruptted||interrupted
 interupted||interrupted
-interupt||interrupt
 intial||initial
 intialisation||initialisation
 intialised||initialised
@@ -774,11 +822,14 @@
 irrelevent||irrelevant
 isnt||isn't
 isssue||issue
+issus||issues
+iteraions||iterations
 iternations||iterations
 itertation||iteration
 itslef||itself
 jave||java
 jeffies||jiffies
+jumpimng||jumping
 juse||just
 jus||just
 kown||known
@@ -799,6 +850,7 @@
 librairies||libraries
 libraris||libraries
 licenceing||licencing
+limted||limited
 logaritmic||logarithmic
 loggging||logging
 loggin||login
@@ -806,6 +858,7 @@
 loobpack||loopback
 loosing||losing
 losted||lost
+maangement||management
 machinary||machinery
 maibox||mailbox
 maintainance||maintenance
@@ -818,6 +871,7 @@
 managable||manageable
 managment||management
 mangement||management
+manger||manager
 manoeuvering||maneuvering
 manufaucturing||manufacturing
 mappping||mapping
@@ -839,6 +893,7 @@
 messgaes||messages
 messsage||message
 messsages||messages
+metdata||metadata
 micropone||microphone
 microprocesspr||microprocessor
 migrateable||migratable
@@ -857,18 +912,22 @@
 missign||missing
 missmanaged||mismanaged
 missmatch||mismatch
+misssing||missing
 miximum||maximum
 mmnemonic||mnemonic
 mnay||many
 modfiy||modify
+modifer||modifier
 modulues||modules
 momery||memory
 memomry||memory
+monitring||monitoring
 monochorome||monochrome
 monochromo||monochrome
 monocrome||monochrome
 mopdule||module
 mroe||more
+multipler||multiplier
 mulitplied||multiplied
 multidimensionnal||multidimensional
 multipe||multiple
@@ -893,6 +952,7 @@
 nescessary||necessary
 nessessary||necessary
 noticable||noticeable
+notication||notification
 notications||notifications
 notifcations||notifications
 notifed||notified
@@ -905,13 +965,14 @@
 occationally||occasionally
 occurance||occurrence
 occurances||occurrences
+occurd||occurred
 occured||occurred
 occurence||occurrence
 occure||occurred
-occured||occurred
 occuring||occurring
 offser||offset
 offet||offset
+offlaod||offload
 offloded||offloaded
 offseting||offsetting
 omited||omitted
@@ -967,6 +1028,7 @@
 pased||passed
 passin||passing
 pathes||paths
+pattrns||patterns
 pecularities||peculiarities
 peformance||performance
 peforming||performing
@@ -974,6 +1036,8 @@
 pendantic||pedantic
 peprocessor||preprocessor
 perfoming||performing
+perfomring||performing
+periperal||peripheral
 peripherial||peripheral
 permissons||permissions
 peroid||period
@@ -993,6 +1057,7 @@
 posible||possible
 positon||position
 possibilites||possibilities
+potocol||protocol
 powerfull||powerful
 pramater||parameter
 preamle||preamble
@@ -1006,9 +1071,11 @@
 preemptable||preemptible
 prefered||preferred
 prefferably||preferably
+prefitler||prefilter
 premption||preemption
 prepaired||prepared
 preperation||preparation
+preprare||prepare
 pressre||pressure
 primative||primitive
 princliple||principle
@@ -1030,6 +1097,7 @@
 processsing||processing
 procteted||protected
 prodecure||procedure
+progamming||programming
 progams||programs
 progess||progress
 programers||programmers
@@ -1047,6 +1115,7 @@
 propery||property
 propigate||propagate
 propigation||propagation
+propogation||propagation
 propogate||propagate
 prosess||process
 protable||portable
@@ -1061,11 +1130,13 @@
 pwoer||power
 queing||queuing
 quering||querying
+queus||queues
 randomally||randomly
 raoming||roaming
 reasearcher||researcher
 reasearchers||researchers
 reasearch||research
+receieve||receive
 recepient||recipient
 recevied||received
 receving||receiving
@@ -1115,12 +1186,14 @@
 reponse||response
 representaion||representation
 reqeust||request
+reqister||register
 requestied||requested
 requiere||require
 requirment||requirement
 requred||required
 requried||required
 requst||request
+requsted||requested
 reregisteration||reregistration
 reseting||resetting
 reseved||reserved
@@ -1142,6 +1215,8 @@
 retreiving||retrieving
 retrive||retrieve
 retrived||retrieved
+retrun||return
+retun||return
 retuned||returned
 reudce||reduce
 reuest||request
@@ -1166,6 +1241,7 @@
 scaned||scanned
 scaning||scanning
 scarch||search
+schdule||schedule
 seach||search
 searchs||searches
 secquence||sequence
@@ -1188,10 +1264,12 @@
 seqeuencer||sequencer
 sequece||sequence
 sequencial||sequential
+serivce||service
 serveral||several
 servive||service
 setts||sets
 settting||setting
+shapshot||snapshot
 shotdown||shutdown
 shoud||should
 shouldnt||shouldn't
@@ -1199,6 +1277,7 @@
 shrinked||shrunk
 siginificantly||significantly
 signabl||signal
+significanly||significantly
 similary||similarly
 similiar||similar
 simlar||similar
@@ -1252,6 +1331,7 @@
 subdirectoires||subdirectories
 suble||subtle
 substract||subtract
+submited||submitted
 submition||submission
 suceed||succeed
 succesfully||successfully
@@ -1260,6 +1340,7 @@
 successfull||successful
 successfuly||successfully
 sucessfully||successfully
+sucessful||successful
 sucess||success
 superflous||superfluous
 superseeded||superseded
@@ -1289,6 +1370,7 @@
 swithed||switched
 swithing||switching
 swtich||switch
+syfs||sysfs
 symetric||symmetric
 synax||syntax
 synchonized||synchronized
@@ -1308,10 +1390,12 @@
 teh||the
 temorary||temporary
 temproarily||temporarily
+temperture||temperature
 thead||thread
 therfore||therefore
 thier||their
 threds||threads
+threee||three
 threshhold||threshold
 thresold||threshold
 throught||through
@@ -1342,6 +1426,7 @@
 trasfer||transfer
 trasmission||transmission
 treshold||threshold
+triggerd||triggered
 trigerred||triggered
 trigerring||triggering
 trun||turn
@@ -1351,9 +1436,11 @@
 udpate||update
 uesd||used
 uknown||unknown
-usupported||unsupported
+usccess||success
 uncommited||uncommitted
+uncompatible||incompatible
 unconditionaly||unconditionally
+undeflow||underflow
 underun||underrun
 unecessary||unnecessary
 unexecpted||unexpected
@@ -1390,6 +1477,7 @@
 unsuccessfull||unsuccessful
 unsuported||unsupported
 untill||until
+ununsed||unused
 unuseful||useless
 unvalid||invalid
 upate||update
@@ -1414,6 +1502,7 @@
 varient||variant
 vaule||value
 verbse||verbose
+veify||verify
 verisons||versions
 verison||version
 verson||version
diff --git a/scripts/sphinx-pre-install b/scripts/sphinx-pre-install
index 62cb61b..8fcea76 100755
--- a/scripts/sphinx-pre-install
+++ b/scripts/sphinx-pre-install
@@ -2,7 +2,7 @@
 # SPDX-License-Identifier: GPL-2.0-or-later
 use strict;
 
-# Copyright (c) 2017-2019 Mauro Carvalho Chehab <mchehab@kernel.org>
+# Copyright (c) 2017-2020 Mauro Carvalho Chehab <mchehab@kernel.org>
 #
 
 my $prefix = "./";
@@ -22,10 +22,16 @@
 my $optional = 0;
 my $need_symlink = 0;
 my $need_sphinx = 0;
+my $need_venv = 0;
+my $need_virtualenv = 0;
 my $rec_sphinx_upgrade = 0;
 my $install = "";
 my $virtenv_dir = "";
+my $python_cmd = "";
 my $min_version;
+my $cur_version;
+my $rec_version = "1.7.9";	# PDF won't build here
+my $min_pdf_version = "2.4.4";	# Min version where pdf builds
 
 #
 # Command line arguments
@@ -70,6 +76,7 @@
 	'ucs.sty'            => 'texlive-ucs',
 	'upquote.sty'        => 'texlive-upquote',
 	'wrapfig.sty'        => 'texlive-wrapfig',
+	'ctexhook.sty'       => 'texlive-ctex',
 );
 
 #
@@ -124,11 +131,13 @@
 
 sub check_missing_file($$$)
 {
-	my $file = shift;
+	my $files = shift;
 	my $package = shift;
 	my $is_optional = shift;
 
-	return if(-e $file);
+	for (@$files) {
+		return if(-e $_);
+	}
 
 	add_package($package, $is_optional);
 }
@@ -140,12 +149,30 @@
 	}
 }
 
+sub find_python_no_venv()
+{
+	my $prog = shift;
+
+	my $cur_dir = qx(pwd);
+	$cur_dir =~ s/\s+$//;
+
+	foreach my $dir (split(/:/, $ENV{PATH})) {
+		next if ($dir =~ m,($cur_dir)/sphinx,);
+		return "$dir/python3" if(-x "$dir/python3");
+	}
+	foreach my $dir (split(/:/, $ENV{PATH})) {
+		next if ($dir =~ m,($cur_dir)/sphinx,);
+		return "$dir/python" if(-x "$dir/python");
+	}
+	return "python";
+}
+
 sub check_program($$)
 {
 	my $prog = shift;
 	my $is_optional = shift;
 
-	return if findprog($prog);
+	return $prog if findprog($prog);
 
 	add_package($prog, $is_optional);
 }
@@ -166,9 +193,9 @@
 	my $prog = shift;
 	my $is_optional = shift;
 
-	my $err = system("python3 -c 'import $prog' 2>/dev/null /dev/null");
-	return if ($err == 0);
-	my $err = system("python -c 'import $prog' 2>/dev/null /dev/null");
+	return if (!$python_cmd);
+
+	my $err = system("$python_cmd -c 'import $prog' 2>/dev/null /dev/null");
 	return if ($err == 0);
 
 	add_package($prog, $is_optional);
@@ -223,23 +250,33 @@
 		return $fname;
 	}
 
-	if ($virtualenv) {
-		my $prog = findprog("virtualenv-3");
-		$prog = findprog("virtualenv-3.5") if (!$prog);
-
-		check_program("virtualenv", 0) if (!$prog);
-		$need_sphinx = 1;
-	} else {
-		add_package("python-sphinx", 0);
-	}
-
 	return "";
 }
 
+sub get_sphinx_version($)
+{
+	my $cmd = shift;
+	my $ver;
+
+	open IN, "$cmd --version 2>&1 |";
+	while (<IN>) {
+		if (m/^\s*sphinx-build\s+([\d\.]+)(\+\/[\da-f]+)?$/) {
+			$ver=$1;
+			last;
+		}
+		# Sphinx 1.2.x uses a different format
+		if (m/^\s*Sphinx.*\s+([\d\.]+)$/) {
+			$ver=$1;
+			last;
+		}
+	}
+	close IN;
+	return $ver;
+}
+
 sub check_sphinx()
 {
-	my $rec_version;
-	my $cur_version;
+	my $default_version;
 
 	open IN, $conf or die "Can't open $conf";
 	while (<IN>) {
@@ -255,45 +292,35 @@
 	open IN, $requirement_file or die "Can't open $requirement_file";
 	while (<IN>) {
 		if (m/^\s*Sphinx\s*==\s*([\d\.]+)$/) {
-			$rec_version=$1;
+			$default_version=$1;
 			last;
 		}
 	}
 	close IN;
 
-	die "Can't get recommended sphinx version from $requirement_file" if (!$min_version);
+	die "Can't get default sphinx version from $requirement_file" if (!$default_version);
 
-	$virtenv_dir = $virtenv_prefix . $rec_version;
+	$virtenv_dir = $virtenv_prefix . $default_version;
 
 	my $sphinx = get_sphinx_fname();
-	return if ($sphinx eq "");
-
-	open IN, "$sphinx --version 2>&1 |" or die "$sphinx returned an error";
-	while (<IN>) {
-		if (m/^\s*sphinx-build\s+([\d\.]+)$/) {
-			$cur_version=$1;
-			last;
-		}
-		# Sphinx 1.2.x uses a different format
-		if (m/^\s*Sphinx.*\s+([\d\.]+)$/) {
-			$cur_version=$1;
-			last;
-		}
+	if ($sphinx eq "") {
+		$need_sphinx = 1;
+		return;
 	}
-	close IN;
+
+	$cur_version = get_sphinx_version($sphinx);
+	die ("$sphinx returned an error") if (!$cur_version);
 
 	die "$sphinx didn't return its version" if (!$cur_version);
 
 	if ($cur_version lt $min_version) {
 		printf "ERROR: Sphinx version is %s. It should be >= %s (recommended >= %s)\n",
-		       $cur_version, $min_version, $rec_version;;
+		       $cur_version, $min_version, $default_version;
 		$need_sphinx = 1;
 		return;
 	}
 
 	if ($cur_version lt $rec_version) {
-		printf "Sphinx version %s\n", $cur_version;
-		print "Warning: It is recommended at least Sphinx version $rec_version.\n";
 		$rec_sphinx_upgrade = 1;
 		return;
 	}
@@ -334,6 +361,7 @@
 	my %map = (
 		"python-sphinx"		=> "python3-sphinx",
 		"sphinx_rtd_theme"	=> "python3-sphinx-rtd-theme",
+		"ensurepip"		=> "python3-venv",
 		"virtualenv"		=> "virtualenv",
 		"dot"			=> "graphviz",
 		"convert"		=> "imagemagick",
@@ -343,10 +371,15 @@
 	);
 
 	if ($pdf) {
-		check_missing_file("/usr/share/fonts/truetype/dejavu/DejaVuSans.ttf",
+		check_missing_file(["/usr/share/texlive/texmf-dist/tex/latex/ctex/ctexhook.sty"],
+				   "texlive-lang-chinese", 2);
+
+		check_missing_file(["/usr/share/fonts/truetype/dejavu/DejaVuSans.ttf"],
 				   "fonts-dejavu", 2);
 
-		check_missing_file("/usr/share/fonts/noto-cjk/NotoSansCJK-Regular.ttc",
+		check_missing_file(["/usr/share/fonts/noto-cjk/NotoSansCJK-Regular.ttc",
+				    "/usr/share/fonts/opentype/noto/NotoSansCJK-Regular.ttc",
+				    "/usr/share/fonts/opentype/noto/NotoSerifCJK-Regular.ttc"],
 				   "fonts-noto-cjk", 2);
 	}
 
@@ -413,7 +446,7 @@
 	}
 
 	if ($pdf) {
-		check_missing_file("/usr/share/fonts/google-noto-cjk/NotoSansCJK-Regular.ttc",
+		check_missing_file(["/usr/share/fonts/google-noto-cjk/NotoSansCJK-Regular.ttc"],
 				   "google-noto-sans-cjk-ttc-fonts", 2);
 	}
 
@@ -443,9 +476,11 @@
 		"convert"		=> "ImageMagick",
 		"Pod::Usage"		=> "perl-Pod-Usage",
 		"xelatex"		=> "texlive-xetex-bin",
-		"rsvg-convert"		=> "rsvg-view",
 	);
 
+	# On Tumbleweed, this package is also named rsvg-convert
+	$map{"rsvg-convert"} = "rsvg-view" if (!($system_release =~ /Tumbleweed/));
+
 	my @suse_tex_pkgs = (
 		"texlive-babel-english",
 		"texlive-caption",
@@ -488,7 +523,7 @@
 		"convert"		=> "ImageMagick",
 		"Pod::Usage"		=> "perl-Pod-Usage",
 		"xelatex"		=> "texlive",
-		"rsvg-convert"		=> "librsvg2-tools",
+		"rsvg-convert"		=> "librsvg2",
 	);
 
 	my @tex_pkgs = (
@@ -497,16 +532,29 @@
 
 	$map{"latexmk"} = "texlive-collection-basic";
 
+	my $packager_cmd;
+	my $noto_sans;
+	if ($system_release =~ /OpenMandriva/) {
+		$packager_cmd = "dnf install";
+		$noto_sans = "noto-sans-cjk-fonts";
+		@tex_pkgs = ( "texlive-collection-fontsextra" );
+	} else {
+		$packager_cmd = "urpmi";
+		$noto_sans = "google-noto-sans-cjk-ttc-fonts";
+	}
+
+
 	if ($pdf) {
-		check_missing_file("/usr/share/fonts/google-noto-cjk/NotoSansCJK-Regular.ttc",
-				   "google-noto-sans-cjk-ttc-fonts", 2);
+		check_missing_file(["/usr/share/fonts/google-noto-cjk/NotoSansCJK-Regular.ttc",
+				    "/usr/share/fonts/TTF/NotoSans-Regular.ttf"],
+				   $noto_sans, 2);
 	}
 
 	check_rpm_missing(\@tex_pkgs, 2) if ($pdf);
 	check_missing(\%map);
 
 	return if (!$need && !$optional);
-	printf("You should run:\n\n\tsudo urpmi $install\n");
+	printf("You should run:\n\n\tsudo $packager_cmd $install\n");
 }
 
 sub give_arch_linux_hints()
@@ -517,6 +565,7 @@
 		"dot"			=> "graphviz",
 		"convert"		=> "imagemagick",
 		"xelatex"		=> "texlive-bin",
+		"latexmk"		=> "texlive-core",
 		"rsvg-convert"		=> "extra/librsvg",
 	);
 
@@ -528,7 +577,7 @@
 	check_pacman_missing(\@archlinux_tex_pkgs, 2) if ($pdf);
 
 	if ($pdf) {
-		check_missing_file("/usr/share/fonts/noto-cjk/NotoSansCJK-Regular.ttc",
+		check_missing_file(["/usr/share/fonts/noto-cjk/NotoSansCJK-Regular.ttc"],
 				   "noto-fonts-cjk", 2);
 	}
 
@@ -549,11 +598,12 @@
 		"rsvg-convert"		=> "gnome-base/librsvg",
 	);
 
-	check_missing_file("/usr/share/fonts/dejavu/DejaVuSans.ttf",
+	check_missing_file(["/usr/share/fonts/dejavu/DejaVuSans.ttf"],
 			   "media-fonts/dejavu", 2) if ($pdf);
 
 	if ($pdf) {
-		check_missing_file("/usr/share/fonts/noto-cjk/NotoSansCJKsc-Regular.otf",
+		check_missing_file(["/usr/share/fonts/noto-cjk/NotoSansCJKsc-Regular.otf",
+				    "/usr/share/fonts/noto-cjk/NotoSerifCJK-Regular.ttc"],
 				   "media-fonts/noto-cjk", 2);
 	}
 
@@ -568,10 +618,10 @@
 	my $portage_imagemagick = "/etc/portage/package.use/imagemagick";
 	my $portage_cairo = "/etc/portage/package.use/graphviz";
 
-	if (qx(cat $portage_imagemagick) ne "$imagemagick\n") {
+	if (qx(grep imagemagick $portage_imagemagick 2>/dev/null) eq "") {
 		printf("\tsudo su -c 'echo \"$imagemagick\" > $portage_imagemagick'\n")
 	}
-	if (qx(cat $portage_cairo) ne  "$cairo\n") {
+	if (qx(grep graphviz $portage_cairo 2>/dev/null) eq  "") {
 		printf("\tsudo su -c 'echo \"$cairo\" > $portage_cairo'\n");
 	}
 
@@ -618,6 +668,10 @@
 		give_mageia_hints;
 		return;
 	}
+	if ($system_release =~ /OpenMandriva/) {
+		give_mageia_hints;
+		return;
+	}
 	if ($system_release =~ /Arch Linux/) {
 		give_arch_linux_hints;
 		return;
@@ -645,18 +699,60 @@
 # Common dependencies
 #
 
+sub deactivate_help()
+{
+	printf "\nIf you want to exit the virtualenv, you can use:\n";
+	printf "\tdeactivate\n";
+}
+
 sub check_needs()
 {
-	# Check for needed programs/tools
+	# Check if Sphinx is already accessible from current environment
 	check_sphinx();
 
 	if ($system_release) {
-		print "Detected OS: $system_release.\n\n";
+		print "Detected OS: $system_release.\n";
 	} else {
-		print "Unknown OS\n\n";
+		print "Unknown OS\n";
+	}
+	printf "Sphinx version: %s\n\n", $cur_version if ($cur_version);
+
+	# Check python command line, trying first python3
+	$python_cmd = findprog("python3");
+	$python_cmd = check_program("python", 0) if (!$python_cmd);
+
+	# Check the type of virtual env, depending on Python version
+	if ($python_cmd) {
+		if ($virtualenv) {
+			my $tmp = qx($python_cmd --version 2>&1);
+			if ($tmp =~ m/(\d+\.)(\d+\.)/) {
+				if ($1 >= 3 && $2 >= 3) {
+					$need_venv = 1;		# python 3.3 or upper
+				} else {
+					$need_virtualenv = 1;
+				}
+				if ($1 < 3) {
+					# Complain if it finds python2 (or worse)
+					printf "Warning: python$1 support is deprecated. Use it with caution!\n";
+				}
+			} else {
+				die "Warning: couldn't identify $python_cmd version!";
+			}
+		} else {
+			add_package("python-sphinx", 0);
+		}
 	}
 
-	print "To upgrade Sphinx, use:\n\n" if ($rec_sphinx_upgrade);
+	# Set virtualenv command line, if python < 3.3
+	my $virtualenv_cmd;
+	if ($need_virtualenv) {
+		$virtualenv_cmd = findprog("virtualenv-3");
+		$virtualenv_cmd = findprog("virtualenv-3.5") if (!$virtualenv_cmd);
+		if (!$virtualenv_cmd) {
+			check_program("virtualenv", 0);
+			$virtualenv_cmd = "virtualenv";
+		}
+	}
 
 	# Check for needed programs/tools
 	check_perl_module("Pod::Usage", 0);
@@ -671,32 +767,84 @@
 	check_program("rsvg-convert", 2) if ($pdf);
 	check_program("latexmk", 2) if ($pdf);
 
+	if ($need_sphinx || $rec_sphinx_upgrade) {
+		check_python_module("ensurepip", 0) if ($need_venv);
+	}
+
+	# Do distro-specific checks and output distro-install commands
 	check_distros();
 
+	if (!$python_cmd) {
+		if ($need == 1) {
+			die "Can't build as $need mandatory dependency is missing";
+		} elsif ($need) {
+			die "Can't build as $need mandatory dependencies are missing";
+		}
+	}
+
+	# Check if sphinx-build is called sphinx-build-3
 	if ($need_symlink) {
 		printf "\tsudo ln -sf %s /usr/bin/sphinx-build\n\n",
 		       which("sphinx-build-3");
 	}
+
+	# NOTE: if the system has a too old Sphinx version installed,
+	# it will recommend installing a newer version using virtualenv
+
 	if ($need_sphinx || $rec_sphinx_upgrade) {
 		my $min_activate = "$ENV{'PWD'}/${virtenv_prefix}${min_version}/bin/activate";
 		my @activates = glob "$ENV{'PWD'}/${virtenv_prefix}*/bin/activate";
 
+		if ($cur_version lt $rec_version) {
+			print "Warning: It is recommended at least Sphinx version $rec_version.\n";
+			print "         If you want pdf, you need at least $min_pdf_version.\n";
+		}
+		if ($cur_version lt $min_pdf_version) {
+			print "Note: It is recommended at least Sphinx version $min_pdf_version if you need PDF support.\n";
+		}
 		@activates = sort {$b cmp $a} @activates;
+		my ($activate, $ver);
+		foreach my $f (@activates) {
+			next if ($f lt $min_activate);
 
-		if ($need_sphinx && scalar @activates > 0 && $activates[0] ge $min_activate) {
-			printf "\nNeed to activate a compatible Sphinx version on virtualenv with:\n";
-			printf "\t. $activates[0]\n";
-			exit (1);
+			my $sphinx_cmd = $f;
+			$sphinx_cmd =~ s/activate/sphinx-build/;
+			next if (! -f $sphinx_cmd);
+
+			$ver = get_sphinx_version($sphinx_cmd);
+			if ($need_sphinx && ($ver ge $min_version)) {
+				$activate = $f;
+				last;
+			} elsif ($ver gt $cur_version) {
+				$activate = $f;
+				last;
+			}
+		}
+		if ($activate ne "") {
+			if ($need_sphinx) {
+				printf "\nNeed to activate Sphinx (version $ver) on virtualenv with:\n";
+				printf "\t. $activate\n";
+				deactivate_help();
+				exit (1);
+			} else {
+				printf "\nYou may also use a newer Sphinx (version $ver) with:\n";
+				printf "\tdeactivate && . $activate\n";
+			}
 		} else {
 			my $rec_activate = "$virtenv_dir/bin/activate";
-			my $virtualenv = findprog("virtualenv-3");
-			$virtualenv = findprog("virtualenv-3.5") if (!$virtualenv);
-			$virtualenv = findprog("virtualenv") if (!$virtualenv);
-			$virtualenv = "virtualenv" if (!$virtualenv);
 
-			printf "\t$virtualenv $virtenv_dir\n";
+			print "To upgrade Sphinx, use:\n\n" if ($rec_sphinx_upgrade);
+
+			$python_cmd = find_python_no_venv();
+
+			if ($need_venv) {
+				printf "\t$python_cmd -m venv $virtenv_dir\n";
+			} else {
+				printf "\t$virtualenv_cmd $virtenv_dir\n";
+			}
 			printf "\t. $rec_activate\n";
 			printf "\tpip install -r $requirement_file\n";
+			deactivate_help();
 
 			$need++ if (!$rec_sphinx_upgrade);
 		}
@@ -753,6 +901,24 @@
 $system_release = catcheck("/etc/redhat-release") if !$system_release;
 $system_release = catcheck("/etc/lsb-release") if !$system_release;
 $system_release = catcheck("/etc/gentoo-release") if !$system_release;
+
+# This seems more common than LSB these days
+if (!$system_release) {
+	my %os_var;
+	if (open IN, "cat /etc/os-release|") {
+		while (<IN>) {
+			if (m/^([\w\d\_]+)=\"?([^\"]*)\"?\n/) {
+				$os_var{$1}=$2;
+			}
+		}
+		$system_release = $os_var{"NAME"};
+		if (defined($os_var{"VERSION_ID"})) {
+			$system_release .= " " . $os_var{"VERSION_ID"} if (defined($os_var{"VERSION_ID"}));
+		} else {
+			$system_release .= " " . $os_var{"VERSION"};
+		}
+	}
+}
 $system_release = catcheck("/etc/issue") if !$system_release;
 $system_release =~ s/\s+$//;
 
diff --git a/scripts/tags.sh b/scripts/tags.sh
index 4e18ae5..fd96734 100755
--- a/scripts/tags.sh
+++ b/scripts/tags.sh
@@ -26,7 +26,11 @@
 fi
 
 # ignore userspace tools
-ignore="$ignore ( -path ${tree}tools ) -prune -o"
+if [ -n "$COMPILED_SOURCE" ]; then
+	ignore="$ignore ( -path ./tools ) -prune -o"
+else
+	ignore="$ignore ( -path ${tree}tools ) -prune -o"
+fi
 
 # Detect if ALLSOURCE_ARCHS is set. If not, we assume SRCARCH
 if [ "${ALLSOURCE_ARCHS}" = "" ]; then
@@ -91,20 +95,10 @@
 
 all_compiled_sources()
 {
-	for i in $(all_sources); do
-		case "$i" in
-			*.[cS])
-				j=${i/\.[cS]/\.o}
-				j="${j#$tree}"
-				if [ -e $j ]; then
-					echo $i
-				fi
-				;;
-			*)
-				echo $i
-				;;
-		esac
-	done
+	realpath -es $([ -z "$KBUILD_ABS_SRCTREE" ] && echo --relative-to=.) \
+		include/generated/autoconf.h $(find $ignore -name "*.cmd" -exec \
+		grep -Poh '(?(?=^source_.* \K).*|(?=^  \K\S).*(?= \\))' {} \+ |
+		awk '!a[$0]++') | sort -u
 }
 
 all_target_sources()
@@ -211,6 +205,8 @@
 	'/\<DEVICE_ATTR_\(RW\|RO\|WO\)(\([[:alnum:]_]\+\)/dev_attr_\2/'
 	'/\<DRIVER_ATTR_\(RW\|RO\|WO\)(\([[:alnum:]_]\+\)/driver_attr_\2/'
 	'/\<\(DEFINE\|DECLARE\)_STATIC_KEY_\(TRUE\|FALSE\)\(\|_RO\)(\([[:alnum:]_]\+\)/\4/'
+	'/^SEQCOUNT_LOCKTYPE(\([^,]*\),[[:space:]]*\([^,]*\),[^)]*)/seqcount_\2_t/'
+	'/^SEQCOUNT_LOCKTYPE(\([^,]*\),[[:space:]]*\([^,]*\),[^)]*)/seqcount_\2_init/'
 )
 regex_kconfig=(
 	'/^[[:blank:]]*\(menu\|\)config[[:blank:]]\+\([[:alnum:]_]\+\)/\2/'
diff --git a/scripts/ver_linux b/scripts/ver_linux
index 810e608..0968a30 100755
--- a/scripts/ver_linux
+++ b/scripts/ver_linux
@@ -14,6 +14,8 @@
 	printf("\n")
 
 	vernum = "[0-9]+([.]?[0-9]+)+"
+	libc = "libc[.]so[.][0-9]+$"
+	libcpp = "(libg|stdc)[+]+[.]so[.][0-9]+$"
 
 	printversion("GNU C", version("gcc -dumpversion"))
 	printversion("GNU Make", version("make --version"))
@@ -32,27 +34,17 @@
 	printversion("PPP", version("pppd --version"))
 	printversion("Isdn4k-utils", version("isdnctrl"))
 	printversion("Nfs-utils", version("showmount --version"))
+	printversion("Bison", version("bison --version"))
+	printversion("Flex", version("flex --version"))
 
-	while (getline <"/proc/self/maps" > 0) {
-		if (/libc.*\.so$/) {
-			n = split($0, procmaps, "/")
-			if (match(procmaps[n], vernum)) {
-				ver = substr(procmaps[n], RSTART, RLENGTH)
-				printversion("Linux C Library", ver)
-				break
-			}
-		}
+	while ("ldconfig -p 2>/dev/null" | getline > 0) {
+		if ($NF ~ libc && !seen[ver = version("readlink " $NF)]++)
+			printversion("Linux C Library", ver)
+		else if ($NF ~ libcpp && !seen[ver = version("readlink " $NF)]++)
+			printversion("Linux C++ Library", ver)
 	}
 
 	printversion("Dynamic linker (ldd)", version("ldd --version"))
-
-	while ("ldconfig -p 2>/dev/null" | getline > 0) {
-		if (/(libg|stdc)[+]+\.so/) {
-			libcpp = $NF
-			break
-		}
-	}
-	printversion("Linux C++ Library", version("readlink " libcpp))
 	printversion("Procps", version("ps --version"))
 	printversion("Net-tools", version("ifconfig --version"))
 	printversion("Kbd", version("loadkeys -V"))