Update Linux to v5.4.2
Change-Id: Idf6911045d9d382da2cfe01b1edff026404ac8fd
diff --git a/include/linux/memblock.h b/include/linux/memblock.h
index 5169205..f491690 100644
--- a/include/linux/memblock.h
+++ b/include/linux/memblock.h
@@ -1,24 +1,29 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
#ifndef _LINUX_MEMBLOCK_H
#define _LINUX_MEMBLOCK_H
#ifdef __KERNEL__
-#ifdef CONFIG_HAVE_MEMBLOCK
/*
* Logical memory blocks.
*
* Copyright (C) 2001 Peter Bergner, IBM Corp.
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
*/
#include <linux/init.h>
#include <linux/mm.h>
+#include <asm/dma.h>
-#define INIT_MEMBLOCK_REGIONS 128
-#define INIT_PHYSMEM_REGIONS 4
+extern unsigned long max_low_pfn;
+extern unsigned long min_low_pfn;
+
+/*
+ * highest page
+ */
+extern unsigned long max_pfn;
+/*
+ * highest possible page
+ */
+extern unsigned long long max_possible_pfn;
/**
* enum memblock_flags - definition of memory region attributes
@@ -87,21 +92,19 @@
extern struct memblock memblock;
extern int memblock_debug;
-#ifdef CONFIG_ARCH_DISCARD_MEMBLOCK
+#ifndef CONFIG_ARCH_KEEP_MEMBLOCK
#define __init_memblock __meminit
#define __initdata_memblock __meminitdata
void memblock_discard(void);
#else
#define __init_memblock
#define __initdata_memblock
+static inline void memblock_discard(void) {}
#endif
#define memblock_dbg(fmt, ...) \
if (memblock_debug) printk(KERN_INFO pr_fmt(fmt), ##__VA_ARGS__)
-phys_addr_t memblock_find_in_range_node(phys_addr_t size, phys_addr_t align,
- phys_addr_t start, phys_addr_t end,
- int nid, enum memblock_flags flags);
phys_addr_t memblock_find_in_range(phys_addr_t start, phys_addr_t end,
phys_addr_t size, phys_addr_t align);
void memblock_allow_resize(void);
@@ -118,7 +121,10 @@
int memblock_mark_mirror(phys_addr_t base, phys_addr_t size);
int memblock_mark_nomap(phys_addr_t base, phys_addr_t size);
int memblock_clear_nomap(phys_addr_t base, phys_addr_t size);
-enum memblock_flags choose_memblock_flags(void);
+
+unsigned long memblock_free_all(void);
+void reset_node_managed_pages(pg_data_t *pgdat);
+void reset_all_zones_managed_pages(void);
/* Low level functions */
int memblock_add_range(struct memblock_type *type,
@@ -138,7 +144,6 @@
void __next_reserved_mem_region(u64 *idx, phys_addr_t *out_start,
phys_addr_t *out_end);
-void __memblock_free_early(phys_addr_t base, phys_addr_t size);
void __memblock_free_late(phys_addr_t base, phys_addr_t size);
/**
@@ -232,6 +237,47 @@
i >= 0; __next_mem_pfn_range(&i, nid, p_start, p_end, p_nid))
#endif /* CONFIG_HAVE_MEMBLOCK_NODE_MAP */
+#ifdef CONFIG_DEFERRED_STRUCT_PAGE_INIT
+void __next_mem_pfn_range_in_zone(u64 *idx, struct zone *zone,
+ unsigned long *out_spfn,
+ unsigned long *out_epfn);
+/**
+ * for_each_free_mem_range_in_zone - iterate through zone specific free
+ * memblock areas
+ * @i: u64 used as loop variable
+ * @zone: zone in which all of the memory blocks reside
+ * @p_start: ptr to phys_addr_t for start address of the range, can be %NULL
+ * @p_end: ptr to phys_addr_t for end address of the range, can be %NULL
+ *
+ * Walks over free (memory && !reserved) areas of memblock in a specific
+ * zone. Available once memblock and an empty zone is initialized. The main
+ * assumption is that the zone start, end, and pgdat have been associated.
+ * This way we can use the zone to determine NUMA node, and if a given part
+ * of the memblock is valid for the zone.
+ */
+#define for_each_free_mem_pfn_range_in_zone(i, zone, p_start, p_end) \
+ for (i = 0, \
+ __next_mem_pfn_range_in_zone(&i, zone, p_start, p_end); \
+ i != U64_MAX; \
+ __next_mem_pfn_range_in_zone(&i, zone, p_start, p_end))
+
+/**
+ * for_each_free_mem_range_in_zone_from - iterate through zone specific
+ * free memblock areas from a given point
+ * @i: u64 used as loop variable
+ * @zone: zone in which all of the memory blocks reside
+ * @p_start: ptr to phys_addr_t for start address of the range, can be %NULL
+ * @p_end: ptr to phys_addr_t for end address of the range, can be %NULL
+ *
+ * Walks over free (memory && !reserved) areas of memblock in a specific
+ * zone, continuing from current position. Available as soon as memblock is
+ * initialized.
+ */
+#define for_each_free_mem_pfn_range_in_zone_from(i, zone, p_start, p_end) \
+ for (; i != U64_MAX; \
+ __next_mem_pfn_range_in_zone(&i, zone, p_start, p_end))
+#endif /* CONFIG_DEFERRED_STRUCT_PAGE_INIT */
+
/**
* for_each_free_mem_range - iterate through free memblock areas
* @i: u64 used as loop variable
@@ -265,33 +311,6 @@
for_each_mem_range_rev(i, &memblock.memory, &memblock.reserved, \
nid, flags, p_start, p_end, p_nid)
-/**
- * for_each_resv_unavail_range - iterate through reserved and unavailable memory
- * @i: u64 used as loop variable
- * @p_start: ptr to phys_addr_t for start address of the range, can be %NULL
- * @p_end: ptr to phys_addr_t for end address of the range, can be %NULL
- *
- * Walks over unavailable but reserved (reserved && !memory) areas of memblock.
- * Available as soon as memblock is initialized.
- * Note: because this memory does not belong to any physical node, flags and
- * nid arguments do not make sense and thus not exported as arguments.
- */
-#define for_each_resv_unavail_range(i, p_start, p_end) \
- for_each_mem_range(i, &memblock.reserved, &memblock.memory, \
- NUMA_NO_NODE, MEMBLOCK_NONE, p_start, p_end, NULL)
-
-static inline void memblock_set_region_flags(struct memblock_region *r,
- enum memblock_flags flags)
-{
- r->flags |= flags;
-}
-
-static inline void memblock_clear_region_flags(struct memblock_region *r,
- enum memblock_flags flags)
-{
- r->flags &= ~flags;
-}
-
#ifdef CONFIG_HAVE_MEMBLOCK_NODE_MAP
int memblock_set_node(phys_addr_t base, phys_addr_t size,
struct memblock_type *type, int nid);
@@ -316,10 +335,88 @@
}
#endif /* CONFIG_HAVE_MEMBLOCK_NODE_MAP */
-phys_addr_t memblock_alloc_nid(phys_addr_t size, phys_addr_t align, int nid);
-phys_addr_t memblock_alloc_try_nid(phys_addr_t size, phys_addr_t align, int nid);
+/* Flags for memblock allocation APIs */
+#define MEMBLOCK_ALLOC_ANYWHERE (~(phys_addr_t)0)
+#define MEMBLOCK_ALLOC_ACCESSIBLE 0
+#define MEMBLOCK_ALLOC_KASAN 1
-phys_addr_t memblock_alloc(phys_addr_t size, phys_addr_t align);
+/* We are using top down, so it is safe to use 0 here */
+#define MEMBLOCK_LOW_LIMIT 0
+
+#ifndef ARCH_LOW_ADDRESS_LIMIT
+#define ARCH_LOW_ADDRESS_LIMIT 0xffffffffUL
+#endif
+
+phys_addr_t memblock_phys_alloc_range(phys_addr_t size, phys_addr_t align,
+ phys_addr_t start, phys_addr_t end);
+phys_addr_t memblock_phys_alloc_try_nid(phys_addr_t size, phys_addr_t align, int nid);
+
+static inline phys_addr_t memblock_phys_alloc(phys_addr_t size,
+ phys_addr_t align)
+{
+ return memblock_phys_alloc_range(size, align, 0,
+ MEMBLOCK_ALLOC_ACCESSIBLE);
+}
+
+void *memblock_alloc_try_nid_raw(phys_addr_t size, phys_addr_t align,
+ phys_addr_t min_addr, phys_addr_t max_addr,
+ int nid);
+void *memblock_alloc_try_nid(phys_addr_t size, phys_addr_t align,
+ phys_addr_t min_addr, phys_addr_t max_addr,
+ int nid);
+
+static inline void * __init memblock_alloc(phys_addr_t size, phys_addr_t align)
+{
+ return memblock_alloc_try_nid(size, align, MEMBLOCK_LOW_LIMIT,
+ MEMBLOCK_ALLOC_ACCESSIBLE, NUMA_NO_NODE);
+}
+
+static inline void * __init memblock_alloc_raw(phys_addr_t size,
+ phys_addr_t align)
+{
+ return memblock_alloc_try_nid_raw(size, align, MEMBLOCK_LOW_LIMIT,
+ MEMBLOCK_ALLOC_ACCESSIBLE,
+ NUMA_NO_NODE);
+}
+
+static inline void * __init memblock_alloc_from(phys_addr_t size,
+ phys_addr_t align,
+ phys_addr_t min_addr)
+{
+ return memblock_alloc_try_nid(size, align, min_addr,
+ MEMBLOCK_ALLOC_ACCESSIBLE, NUMA_NO_NODE);
+}
+
+static inline void * __init memblock_alloc_low(phys_addr_t size,
+ phys_addr_t align)
+{
+ return memblock_alloc_try_nid(size, align, MEMBLOCK_LOW_LIMIT,
+ ARCH_LOW_ADDRESS_LIMIT, NUMA_NO_NODE);
+}
+
+static inline void * __init memblock_alloc_node(phys_addr_t size,
+ phys_addr_t align, int nid)
+{
+ return memblock_alloc_try_nid(size, align, MEMBLOCK_LOW_LIMIT,
+ MEMBLOCK_ALLOC_ACCESSIBLE, nid);
+}
+
+static inline void __init memblock_free_early(phys_addr_t base,
+ phys_addr_t size)
+{
+ memblock_free(base, size);
+}
+
+static inline void __init memblock_free_early_nid(phys_addr_t base,
+ phys_addr_t size, int nid)
+{
+ memblock_free(base, size);
+}
+
+static inline void __init memblock_free_late(phys_addr_t base, phys_addr_t size)
+{
+ __memblock_free_late(base, size);
+}
/*
* Set the allocation direction to bottom-up or top-down.
@@ -339,20 +436,6 @@
return memblock.bottom_up;
}
-/* Flags for memblock_alloc_base() amd __memblock_alloc_base() */
-#define MEMBLOCK_ALLOC_ANYWHERE (~(phys_addr_t)0)
-#define MEMBLOCK_ALLOC_ACCESSIBLE 0
-
-phys_addr_t __init memblock_alloc_range(phys_addr_t size, phys_addr_t align,
- phys_addr_t start, phys_addr_t end,
- enum memblock_flags flags);
-phys_addr_t memblock_alloc_base_nid(phys_addr_t size,
- phys_addr_t align, phys_addr_t max_addr,
- int nid, enum memblock_flags flags);
-phys_addr_t memblock_alloc_base(phys_addr_t size, phys_addr_t align,
- phys_addr_t max_addr);
-phys_addr_t __memblock_alloc_base(phys_addr_t size, phys_addr_t align,
- phys_addr_t max_addr);
phys_addr_t memblock_phys_mem_size(void);
phys_addr_t memblock_reserved_size(void);
phys_addr_t memblock_mem_size(unsigned long limit_pfn);
@@ -448,6 +531,31 @@
i < memblock_type->cnt; \
i++, rgn = &memblock_type->regions[i])
+extern void *alloc_large_system_hash(const char *tablename,
+ unsigned long bucketsize,
+ unsigned long numentries,
+ int scale,
+ int flags,
+ unsigned int *_hash_shift,
+ unsigned int *_hash_mask,
+ unsigned long low_limit,
+ unsigned long high_limit);
+
+#define HASH_EARLY 0x00000001 /* Allocating during early boot? */
+#define HASH_SMALL 0x00000002 /* sub-page allocation allowed, min
+ * shift passed via *_hash_shift */
+#define HASH_ZERO 0x00000004 /* Zero allocated hash table */
+
+/* Only NUMA needs hash distribution. 64bit NUMA architectures have
+ * sufficient vmalloc space.
+ */
+#ifdef CONFIG_NUMA
+#define HASHDIST_DEFAULT IS_ENABLED(CONFIG_64BIT)
+extern int hashdist; /* Distribute hashes across NUMA nodes? */
+#else
+#define hashdist (0)
+#endif
+
#ifdef CONFIG_MEMTEST
extern void early_memtest(phys_addr_t start, phys_addr_t end);
#else
@@ -455,12 +563,6 @@
{
}
#endif
-#else
-static inline phys_addr_t memblock_alloc(phys_addr_t size, phys_addr_t align)
-{
- return 0;
-}
-#endif /* CONFIG_HAVE_MEMBLOCK */
#endif /* __KERNEL__ */