This is a note to let you know that I've just added the patch titled
tools/cgroup/slabinfo.py: updated to work on current kernel
to the 5.10-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
tools-cgroup-slabinfo.py-updated-to-work-on-current-.patch
and it can be found in the queue-5.10 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 24bc8eaa11cdec7783e1bda83ac37cb8a21b2d53
Author: Vasily Averin <vvs@xxxxxxxxxxxxx>
Date: Fri Apr 23 14:29:03 2021 -0700
tools/cgroup/slabinfo.py: updated to work on current kernel
[ Upstream commit 1974c45dd7745e999b9387be3d8fdcb27a5b1721 ]
slabinfo.py script does not work with actual kernel version.
First, it was unable to recognise SLUB susbsytem, and when I specified
it manually it failed again with
AttributeError: 'struct page' has no member 'obj_cgroups'
.. and then again with
File "tools/cgroup/memcg_slabinfo.py", line 221, in main
memcg.kmem_caches.address_of_(),
AttributeError: 'struct mem_cgroup' has no member 'kmem_caches'
Link: https://lkml.kernel.org/r/cec1a75e-43b4-3d64-2084-d9f98fda037f@xxxxxxxxxxxxx
Signed-off-by: Vasily Averin <vvs@xxxxxxxxxxxxx>
Tested-by: Roman Gushchin <guro@xxxxxx>
Acked-by: Roman Gushchin <guro@xxxxxx>
Cc: Michal Hocko <mhocko@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
Signed-off-by: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/tools/cgroup/memcg_slabinfo.py b/tools/cgroup/memcg_slabinfo.py
index c4225ed63565..1600b17dbb8a 100644
--- a/tools/cgroup/memcg_slabinfo.py
+++ b/tools/cgroup/memcg_slabinfo.py
@@ -128,9 +128,9 @@ def detect_kernel_config():
cfg['nr_nodes'] = prog['nr_online_nodes'].value_()
- if prog.type('struct kmem_cache').members[1][1] == 'flags':
+ if prog.type('struct kmem_cache').members[1].name == 'flags':
cfg['allocator'] = 'SLUB'
- elif prog.type('struct kmem_cache').members[1][1] == 'batchcount':
+ elif prog.type('struct kmem_cache').members[1].name == 'batchcount':
cfg['allocator'] = 'SLAB'
else:
err('Can\'t determine the slab allocator')
@@ -193,7 +193,7 @@ def main():
# look over all slab pages, belonging to non-root memcgs
# and look for objects belonging to the given memory cgroup
for page in for_each_slab_page(prog):
- objcg_vec_raw = page.obj_cgroups.value_()
+ objcg_vec_raw = page.memcg_data.value_()
if objcg_vec_raw == 0:
continue
cache = page.slab_cache
@@ -202,7 +202,7 @@ def main():
addr = cache.value_()
caches[addr] = cache
# clear the lowest bit to get the true obj_cgroups
- objcg_vec = Object(prog, page.obj_cgroups.type_,
+ objcg_vec = Object(prog, 'struct obj_cgroup **',
value=objcg_vec_raw & ~1)
if addr not in stats:
