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/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