Re: [v5 1/4] mm, oom: refactor the oom_kill_process() function

David Rientjes
2017-08-14T22:00:43Z

On Mon, 14 Aug 2017, Roman Gushchin wrote:

> The oom_kill_process() function consists of two logical parts:
> the first one is responsible for considering task's children as
> a potential victim and printing the debug information.
> The second half is responsible for sending SIGKILL to all
> tasks sharing the mm struct with the given victim.
>
> This commit splits the oom_kill_process() function with
> an intention to re-use the the second half: __oom_kill_process().
>
> The cgroup-aware OOM killer will kill multiple tasks
> belonging to the victim cgroup. We don't need to print
> the debug information for the each task, as well as play
> with task selection (considering task's children),
> so we can't use the existing oom_kill_process().
>
> Signed-off-by: Roman Gushchin <guro-b10kYP2dOMg@public.gmane.org>
> Cc: Michal Hocko <mhocko-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
> Cc: Vladimir Davydov <vdavydov.dev-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
> Cc: Johannes Weiner <hannes-druUgvl0LCNAfugRpC6u6w@public.gmane.org>
> Cc: Tetsuo Handa <penguin-kernel-JPay3/Yim36HaxMnTkn67Xf5DAMn2ifp@public.gmane.org>
> Cc: David Rientjes <rientjes-hpIqsD4AKlfQT0dZR+AlfA@public.gmane.org>
> Cc: Tejun Heo <tj-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
> Cc: kernel-team-b10kYP2dOMg@public.gmane.org
> Cc: cgroups-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
> Cc: linux-doc-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
> Cc: linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
> Cc: linux-mm-Bw31MaZKKs3YtjvyW6yDsg@public.gmane.org

Acked-by: David Rientjes <rientjes-hpIqsD4AKlfQT0dZR+AlfA@public.gmane.org>