On Tue, May 08, 2018 at 01:46:37PM +0100, Roman Gushchin wrote:
> Commit e27be240df53 ("mm: memcg: make sure memory.events is
> uptodate when waking pollers") converted most of memcg event
> counters to per-memcg atomics, which made them less confusing
> for a user. The "oom_kill" counter remained untouched, so now
> it behaves differently than other counters (including "oom").
> This adds nothing but confusion.
>
> Let's fix this by adding the MEMCG_OOM_KILL event, and follow
> the MEMCG_OOM approach. This also removes a hack from
> count_memcg_event_mm(), introduced earlier specially for the
> OOM_KILL counter.
>
> Signed-off-by: Roman Gushchin <guro@xxxxxx>
> Cc: Johannes Weiner <hannes@xxxxxxxxxxx>
> Cc: Michal Hocko <mhocko@xxxxxxxxxx>
> Cc: Vladimir Davydov <vdavydov.dev@xxxxxxxxx>
> Cc: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
> Cc: Konstantin Khlebnikov <khlebnikov@xxxxxxxxxxxxxx>
> Cc: linux-kernel@xxxxxxxxxxxxxxx
> Cc: cgroups@xxxxxxxxxxxxxxx
> Cc: linux-mm@xxxxxxxxx
Acked-by: Johannes Weiner <hannes@xxxxxxxxxxx>
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