Re: [PATCH v2 1/1] mm, oom_adj: don't loop through tasks in __set_oom_adj when not necessary

To: Michal Hocko <mhocko@xxxxxxxx>
Subject: Re: [PATCH v2 1/1] mm, oom_adj: don't loop through tasks in __set_oom_adj when not necessary
From: Oleg Nesterov <oleg@xxxxxxxxxx>
Date: Tue, 25 Aug 2020 17:44:01 +0200
Cc: Suren Baghdasaryan <surenb@xxxxxxxxxx>, christian.brauner@xxxxxxxxxx, mingo@xxxxxxxxxx, peterz@xxxxxxxxxxxxx, tglx@xxxxxxxxxxxxx, esyr@xxxxxxxxxx, christian@xxxxxxxxxx, areber@xxxxxxxxxx, shakeelb@xxxxxxxxxx, cyphar@xxxxxxxxxx, adobriyan@xxxxxxxxx, akpm@xxxxxxxxxxxxxxxxxxxx, ebiederm@xxxxxxxxxxxx, gladkov.alexey@xxxxxxxxx, walken@xxxxxxxxxx, daniel.m.jordan@xxxxxxxxxx, avagin@xxxxxxxxx, bernd.edlinger@xxxxxxxxxx, john.johansen@xxxxxxxxxxxxx, laoar.shao@xxxxxxxxx, timmurray@xxxxxxxxxx, minchan@xxxxxxxxxx, kernel-team@xxxxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx, linux-fsdevel@xxxxxxxxxxxxxxx, stable@xxxxxxxxxxxxxxx, linux-mm@xxxxxxxxx
In-reply-to: <20200825150516.GJ22869@dhcp22.suse.cz>
References: <20200824153036.3201505-1-surenb@google.com> <20200825150516.GJ22869@dhcp22.suse.cz>
User-agent: Mutt/1.5.24 (2015-08-30)

On 08/25, Michal Hocko wrote:
>
> Btw. now that the flag is in place we can optimize __oom_kill_process as
> well.

and zap_threads().

Oleg.

References:
- [PATCH v2 1/1] mm, oom_adj: don't loop through tasks in __set_oom_adj when not necessary
  - From: Suren Baghdasaryan
- Re: [PATCH v2 1/1] mm, oom_adj: don't loop through tasks in __set_oom_adj when not necessary
  - From: Michal Hocko