The patch titled Subject: mm: add group_oom_kill memory.event fix has been added to the -mm tree. Its filename is mm-add-group_oom_kill-memoryevent-fix.patch This patch should soon appear at https://ozlabs.org/~akpm/mmots/broken-out/mm-add-group_oom_kill-memoryevent-fix.patch and later at https://ozlabs.org/~akpm/mmotm/broken-out/mm-add-group_oom_kill-memoryevent-fix.patch Before you just go and hit "reply", please: a) Consider who else should be cc'ed b) Prefer to cc a suitable mailing list as well c) Ideally: find the original patch on the mailing list and do a reply-to-all to that, adding suitable additional cc's *** Remember to use Documentation/process/submit-checklist.rst when testing your code *** The -mm tree is included into linux-next and is updated there every 3-4 working days ------------------------------------------------------ From: Dan Schatzberg <schatzberg.dan@xxxxxxxxx> Subject: mm: add group_oom_kill memory.event fix Andrew, could you please amend the prior patch "mm: add group_oom_kill memory.event" with these changes from Johannes and Chris? Also - small nit: it makes better sense to s/group_oom_kill/oom_group_kill/g in the patch title. Link: https://lkml.kernel.org/r/20211213162511.2492267-1-schatzberg.dan@xxxxxxxxx Reviewed-by: Roman Gushchin <guro@xxxxxx> Acked-by: Chris Down <chris@xxxxxxxxxxxxxx> Acked-by: Johannes Weiner <hannes@xxxxxxxxxxx> Signed-off-by: Dan Schatzberg <schatzberg.dan@xxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- Documentation/admin-guide/cgroup-v2.rst | 3 +-- mm/memcontrol.c | 3 --- 2 files changed, 1 insertion(+), 5 deletions(-) --- a/Documentation/admin-guide/cgroup-v2.rst~mm-add-group_oom_kill-memoryevent-fix +++ a/Documentation/admin-guide/cgroup-v2.rst @@ -1269,8 +1269,7 @@ PAGE_SIZE multiple when read back. killed by any kind of OOM killer. oom_group_kill - The number of times all tasks in the cgroup were killed - due to memory.oom.group. + The number of times a group OOM has occurred. memory.events.local Similar to memory.events but the fields in the file are local --- a/mm/memcontrol.c~mm-add-group_oom_kill-memoryevent-fix +++ a/mm/memcontrol.c @@ -4390,9 +4390,6 @@ static int mem_cgroup_oom_control_read(s seq_printf(sf, "under_oom %d\n", (bool)memcg->under_oom); seq_printf(sf, "oom_kill %lu\n", atomic_long_read(&memcg->memory_events[MEMCG_OOM_KILL])); - seq_printf(sf, "oom_group_kill %lu\n", - atomic_long_read( - &memcg->memory_events[MEMCG_OOM_GROUP_KILL])); return 0; } _ Patches currently in -mm which might be from schatzberg.dan@xxxxxxxxx are mm-add-group_oom_kill-memory-event.patch mm-add-group_oom_kill-memoryevent-fix.patch