linux-kernel - Re: [PATCH v8 1/2] sched/rt: fix bad task migration for rt tasks

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Message-ID: <xhsmh4jpma9qu.mognet@vschneid.remote.csb>
Date:   Tue, 11 Apr 2023 13:23:05 +0100
From:   Valentin Schneider <vschneid@...hat.com>
To:     Schspa Shi <schspa@...il.com>, mingo@...hat.com,
        peterz@...radead.org, juri.lelli@...hat.com,
        vincent.guittot@...aro.org, dietmar.eggemann@....com,
        rostedt@...dmis.org, bsegall@...gle.com, mgorman@...e.de,
        bristot@...hat.com, dgonyier@...hat.com
Cc:     linux-kernel@...r.kernel.org, zhaohui.shi@...izon.ai,
        Schspa Shi <schspa@...il.com>
Subject: Re: [PATCH v8 1/2] sched/rt: fix bad task migration for rt tasks

On 06/04/23 12:55, Valentin Schneider wrote:
>
> Sorry, I lost track of that one, and ironically it looks like we've hit
> this bug internally. I'm going to test whether this is the cure we need,
> but even if this isn't the same issue, that patch looks good:
>
> Reviewed-by: Valentin Schneider <vschneid@...hat.com>
>
> I have some more comments on 2/2, but IMO this can go in on its own.

Seems like we were indeed hitting that bug, as we used to have a MTTF of
about 2 hours, and we haven't had any with that patch in 3 days.

Tested-By: Dwaine Gonyier <dgonyier@...hat.com>