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toos/gdb:sync mempool memdump method

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Signed-off-by: anjiahao <anjiahao@xiaomi.com>
This commit is contained in:
anjiahao 2024-06-27 14:18:18 +08:00 committed by Xiang Xiao
parent 9478f5b6d4
commit 9eadf61e90
1 changed files with 61 additions and 16 deletions
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77
tools/gdb/memdump.py
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@ -21,15 +21,13 @@
import argparse
import gdb
import utils
from lists import list_for_each_entry, sq_for_every, sq_queue
mempool_backtrace = utils.CachedType("struct mempool_backtrace_s")
from lists import sq_for_every, sq_queue
from utils import get_symbol_value
MM_ALLOC_BIT = 0x1
MM_PREVFREE_BIT = 0x2
MM_MASK_BIT = MM_ALLOC_BIT | MM_PREVFREE_BIT
MEMPOOL_MAGIC_ALLOC = 0x55555555
PID_MM_FREE = -4
PID_MM_ALLOC = -3
@ -37,6 +35,11 @@ PID_MM_LEAK = -2
PID_MM_MEMPOOL = -1
def align_up(size, align) -> int:
"""Align the size to the specified alignment"""
return (size + (align - 1)) & ~(align - 1)
def mm_nodesize(size) -> int:
"""Return the real size of a memory node"""
return size & ~MM_MASK_BIT
@ -67,6 +70,48 @@ def mempool_multiple_foreach(mpool):
i += 1
def mempool_realblocksize(pool):
"""Return the real block size of a mempool"""
if get_symbol_value("CONFIG_MM_DFAULT_ALIGNMENT") == 0:
mempool_align = 2 * gdb.lookup_type("size_t").sizeof
else:
mempool_align = get_symbol_value("CONFIG_MM_DFAULT_ALIGNMENT")
if get_symbol_value("CONFIG_MM_BACKTRACE") >= 0:
return align_up(
pool["blocksize"] + gdb.lookup_type("struct mempool_backtrace_s").sizeof,
mempool_align,
)
else:
return pool["blocksize"]
def mempool_foreach(pool):
"""Iterate over all block in a mempool"""
blocksize = mempool_realblocksize(pool)
if pool["ibase"] != 0:
nblk = pool["interruptsize"] / blocksize
while nblk > 0:
bufaddr = gdb.Value(pool["ibase"] + nblk * blocksize + pool["blocksize"])
buf = bufaddr.cast(gdb.lookup_type("struct mempool_backtrace_s").pointer())
yield buf
nblk -= 1
entry = sq_queue.get_type().pointer()
for entry in sq_for_every(pool["equeue"], entry):
nblk = (pool["expandsize"] - gdb.lookup_type("sq_entry_t").sizeof) / blocksize
base = (
gdb.Value(entry).cast(gdb.lookup_type("char").pointer()) - nblk * blocksize
)
while nblk > 0:
bufaddr = gdb.Value(base + nblk * blocksize + pool["blocksize"])
buf = bufaddr.cast(gdb.lookup_type("struct mempool_backtrace_s").pointer())
yield buf
nblk -= 1
class Nxmemdump(gdb.Command):
"""Dump the heap and mempool memory"""
@ -89,31 +134,31 @@ class Nxmemdump(gdb.Command):
self.aordblks += 1
self.uordblks += pool["blocksize"]
else:
for node in list_for_each_entry(
pool["alist"], mempool_backtrace.get_type().pointer(), "node"
):
if (pid == node["pid"] or pid == PID_MM_ALLOC) and (
node["seqno"] >= seqmin and node["seqno"] < seqmax
for buf in mempool_foreach(pool):
if (
(pid == buf["pid"] or pid == PID_MM_ALLOC)
and (buf["seqno"] >= seqmin and buf["seqno"] < seqmax)
and buf["magic"] == MEMPOOL_MAGIC_ALLOC
):
charnode = gdb.Value(node).cast(
charnode = gdb.Value(buf).cast(
gdb.lookup_type("char").pointer()
)
gdb.write(
"%6d%12u%12u%#*x"
% (
node["pid"],
buf["pid"],
mm_nodesize(pool["blocksize"]),
node["seqno"],
buf["seqno"],
self.align,
(int)(charnode - pool["blocksize"]),
)
)
if node.type.has_key("backtrace"):
max = node["backtrace"].type.range()[1]
if buf.type.has_key("backtrace"):
max = buf["backtrace"].type.range()[1]
for x in range(0, max):
gdb.write(" ")
gdb.write(
node["backtrace"][x].format_string(
buf["backtrace"][x].format_string(
raw=False, symbols=True, address=False
)
)