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| author |   Yafang Shao <laoar.shao@gmail.com> | 2023-02-14 15:35:49 +0000 |
|---|---|---|
| committer |   Andrew Morton <akpm@linux-foundation.org> | 2023-02-16 20:43:55 -0800 |
| commit | 2ef8ed7ddd2e6e69da7802be51af8ad71326a74f (patch) | |
| tree | abf089b7cce04ead6f17bb66efa8c03257a6edd3 /tools/perf/scripts/python/export-to-postgresql.py | |
| parent | maple_tree: reduce stack usage with gcc-9 and earlier (diff) | |
| download | wireguard-linux-2ef8ed7ddd2e6e69da7802be51af8ad71326a74f.tar.xz wireguard-linux-2ef8ed7ddd2e6e69da7802be51af8ad71326a74f.zip | |
mm: percpu: fix incorrect size in pcpu_obj_full_size()
The extra space which is used to store the obj_cgroup membership is only
valid when kmemcg is enabled. The kmemcg can be disabled via the kernel
parameter "cgroup.memory=nokmem" at boot time. This helper is also used
in non-memcg code, for example the tracepoint, so we should fix it.
It was found by code review when I was implementing bpf memory usage[1].
No real issue happens in production environment.
[1]. https://lwn.net/Articles/921991/
Link: https://lkml.kernel.org/r/20230214153549.12291-1-laoar.shao@gmail.com
Signed-off-by: Yafang Shao <laoar.shao@gmail.com>
Reviewed-by: Roman Gushchin <roman.gushchin@linux.dev>
Acked-by: Dennis Zhou <dennis@kernel.org>
Cc: Tejun Heo <tj@kernel.org>
Cc: Christoph Lameter <cl@linux.com>
Cc: Vasily Averin <vvs@openvz.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'tools/perf/scripts/python/export-to-postgresql.py')
0 files changed, 0 insertions, 0 deletions