Re: [v5 3/4] mm, oom: introduce oom_priority for memory cgroups

[David Rientjes]

On Mon, 14 Aug 2017, Roman Gushchin wrote:

> Introduce a per-memory-cgroup oom_priority setting: an integer number
> within the [-10000, 10000] range, which defines the order in which
> the OOM killer selects victim memory cgroups.
> 
> OOM killer prefers memory cgroups with larger priority if they are
> populated with elegible tasks.
> 
> The oom_priority value is compared within sibling cgroups.
> 
> The root cgroup has the oom_priority 0, which cannot be changed.
> 
> Signed-off-by: Roman Gushchin <guro@xxxxxx>
> Cc: Michal Hocko <mhocko@xxxxxxxxxx>
> Cc: Vladimir Davydov <vdavydov.dev@xxxxxxxxx>
> Cc: Johannes Weiner <hannes@xxxxxxxxxxx>
> Cc: David Rientjes <rientjes@xxxxxxxxxx>
> Cc: Tejun Heo <tj@xxxxxxxxxx>
> Cc: Tetsuo Handa <penguin-kernel@xxxxxxxxxxxxxxxxxxx>
> Cc: kernel-team@xxxxxx
> Cc: cgroups@xxxxxxxxxxxxxxx
> Cc: linux-doc@xxxxxxxxxxxxxxx
> Cc: linux-kernel@xxxxxxxxxxxxxxx
> Cc: linux-mm@xxxxxxxxx

Tested-by: David Rientjes <rientjes@xxxxxxxxxx>