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| author | Shakeel Butt <shakeel.butt@linux.dev> | 2025-04-02 22:33:26 -0700 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2025-05-11 17:48:10 -0700 |
| commit | aa8d89d1472b010cbcda7288a4da76e4852a260d (patch) | |
| tree | bb745dfc7f6f3eaf0ba6427cb8c622e603f10d19 /tools/perf/scripts/python/parallel-perf.py | |
| parent | 98c9389042f4d1e6aa73fbaf79e2e962c9497fc5 (diff) | |
| download | linux-aa8d89d1472b010cbcda7288a4da76e4852a260d.tar.gz linux-aa8d89d1472b010cbcda7288a4da76e4852a260d.zip | |
memcg: vmalloc: simplify MEMCG_VMALLOC updates
The vmalloc region can either be charged to a single memcg or none. At
the moment kernel traverses all the pages backing the vmalloc region to
update the MEMCG_VMALLOC stat. However there is no need to look at all
the pages as all those pages will be charged to a single memcg or none.
Simplify the MEMCG_VMALLOC update by just looking at the first page of the
vmalloc region.
[shakeel.butt@linux.dev: add comment]
Link: https://lkml.kernel.org/r/bmlkdbqgwboyqrnxyom7n52fjmo76ux77jhqw5odc6c6dfon3h@zdylwtmlywbt
Link: https://lkml.kernel.org/r/20250403053326.26860-1-shakeel.butt@linux.dev
Signed-off-by: Shakeel Butt <shakeel.butt@linux.dev>
Acked-by: Michal Hocko <mhocko@suse.com>
Reviewed-by: Uladzislau Rezki (Sony) <urezki@gmail.com>
Reviewed-by: Yosry Ahmed <yosry.ahmed@linux.dev>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Muchun Song <muchun.song@linux.dev>
Cc: Roman Gushchin <roman.gushchin@linux.dev>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'tools/perf/scripts/python/parallel-perf.py')
0 files changed, 0 insertions, 0 deletions