mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-08-23 01:10:04 +00:00
d526643f15
Remove redundant import of the sys module. Also use the sort function instead of sorted. It sorts the direct array without create the new one in memory. Link: https://lkml.kernel.org/r/20230108105023.4289-1-apantykhin@gmail.com Signed-off-by: Alexander Pantyukhin <apantykhin@gmail.com> Cc: Roman Gushchin <roman.gushchin@linux.dev> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
70 lines
1.8 KiB
Python
70 lines
1.8 KiB
Python
#!/usr/bin/env python3
|
|
#
|
|
# Copyright (C) 2022 Roman Gushchin <roman.gushchin@linux.dev>
|
|
# Copyright (C) 2022 Meta
|
|
|
|
import os
|
|
import argparse
|
|
|
|
|
|
def scan_cgroups(cgroup_root):
|
|
cgroups = {}
|
|
|
|
for root, subdirs, _ in os.walk(cgroup_root):
|
|
for cgroup in subdirs:
|
|
path = os.path.join(root, cgroup)
|
|
ino = os.stat(path).st_ino
|
|
cgroups[ino] = path
|
|
|
|
# (memcg ino, path)
|
|
return cgroups
|
|
|
|
|
|
def scan_shrinkers(shrinker_debugfs):
|
|
shrinkers = []
|
|
|
|
for root, subdirs, _ in os.walk(shrinker_debugfs):
|
|
for shrinker in subdirs:
|
|
count_path = os.path.join(root, shrinker, "count")
|
|
with open(count_path) as f:
|
|
for line in f.readlines():
|
|
items = line.split(' ')
|
|
ino = int(items[0])
|
|
# (count, shrinker, memcg ino)
|
|
shrinkers.append((int(items[1]), shrinker, ino))
|
|
return shrinkers
|
|
|
|
|
|
def main():
|
|
parser = argparse.ArgumentParser(description='Display biggest shrinkers')
|
|
parser.add_argument('-n', '--lines', type=int, help='Number of lines to print')
|
|
|
|
args = parser.parse_args()
|
|
|
|
cgroups = scan_cgroups("/sys/fs/cgroup/")
|
|
shrinkers = scan_shrinkers("/sys/kernel/debug/shrinker/")
|
|
shrinkers.sort(reverse = True, key = lambda x: x[0])
|
|
|
|
n = 0
|
|
for s in shrinkers:
|
|
count, name, ino = (s[0], s[1], s[2])
|
|
if count == 0:
|
|
break
|
|
|
|
if ino == 0 or ino == 1:
|
|
cg = "/"
|
|
else:
|
|
try:
|
|
cg = cgroups[ino]
|
|
except KeyError:
|
|
cg = "unknown (%d)" % ino
|
|
|
|
print("%-8s %-20s %s" % (count, name, cg))
|
|
|
|
n += 1
|
|
if args.lines and n >= args.lines:
|
|
break
|
|
|
|
|
|
if __name__ == '__main__':
|
|
main()
|