linux-kernel - Re: [RFC PATCH] mm/oom_kill: allow oom kill allocating task for non-global case

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Message-ID: <YMII3OMPoZPuCe0r@dhcp22.suse.cz>
Date:   Thu, 10 Jun 2021 14:43:08 +0200
From:   Michal Hocko <mhocko@...e.com>
To:     Aaron Tomlin <atomlin@...hat.com>
Cc:     Waiman Long <llong@...hat.com>, Shakeel Butt <shakeelb@...gle.com>,
        Linux MM <linux-mm@...ck.org>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Vlastimil Babka <vbabka@...e.cz>,
        LKML <linux-kernel@...r.kernel.org>
Subject: Re: [RFC PATCH] mm/oom_kill: allow oom kill allocating task for
 non-global case

On Thu 10-06-21 13:23:23, Aaron Tomlin wrote:
[...]
> Anyhow, I think we should exclude tasks that have MMF_OOM_SKIP applied in
> dump_tasks() as it could be misleading.

Well, I am not sure this is a good thing in general. We do not want to
hide tasks. We already do display oom_score_adj_min even though they are
not eligible and that can serve a good purpose from my experience. It
gives us some picture at least. Maybe a flag to mark all uneligible
tasks would be something useful but I wouldn't drop them from the list.

-- 
Michal Hocko
SUSE Labs