linux-kernel - Re: [PATCH v4 1/2] sched/rt: fix bad task migration for rt tasks

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Date:   Mon, 11 Jul 2022 21:16:39 -0400
From:   Steven Rostedt <rostedt@...dmis.org>
To:     Schspa Shi <schspa@...il.com>
Cc:     mingo@...hat.com, peterz@...radead.org, juri.lelli@...hat.com,
        vincent.guittot@...aro.org, dietmar.eggemann@....com,
        bsegall@...gle.com, mgorman@...e.de, bristot@...hat.com,
        vschneid@...hat.com, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v4 1/2] sched/rt: fix bad task migration for rt tasks

On Tue, 12 Jul 2022 08:53:56 +0800
Schspa Shi <schspa@...il.com> wrote:

> How about to change this to 
> 
> 			/*
> 			 * We had to unlock the run queue. In
> 			 * the mean time, task could have
> 			 * migrated already or had its affinity changed.
> 			 * Also make sure that it wasn't scheduled on its rq.
> 			 * It is possible the task was scheduled, set
>              * "migrate_disabled" and then got preempted, And we
>              * check task migration disable flag here too.
> 			 */

That's better. But of course it needs better formatting ;-)

-- Steve