linux-kernel - Re: [PATCH] sched: Fix Core-wide rq->lock for uninitialized CPUs

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Message-ID: <CABk29Ns9s5Nr25qVPtOxABchMk1BFqOb1wpEXhQpF8=jpgqAFQ@mail.gmail.com>
Date:   Thu, 19 Aug 2021 17:18:22 -0700
From:   Josh Don <joshdon@...gle.com>
To:     Peter Zijlstra <peterz@...radead.org>
Cc:     Eugene Syromiatnikov <esyr@...hat.com>,
        Joel Fernandes <joel@...lfernandes.org>,
        "Hyser,Chris" <chris.hyser@...cle.com>,
        Ingo Molnar <mingo@...nel.org>,
        Vincent Guittot <vincent.guittot@...aro.org>,
        Valentin Schneider <valentin.schneider@....com>,
        Mel Gorman <mgorman@...e.de>,
        linux-kernel <linux-kernel@...r.kernel.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Christian Brauner <christian.brauner@...ntu.com>, ldv@...ace.io
Subject: Re: [PATCH] sched: Fix Core-wide rq->lock for uninitialized CPUs

Hi Peter,

On Thu, Aug 19, 2021 at 4:09 AM Peter Zijlstra <peterz@...radead.org> wrote:
>
> -       /* shared state */
> +       /* shared state -- careful with sched_core_cpu_deactivate() */

Could also throw these fields into a wrapping struct. Either way seems fine.

Reviewed-by: Josh Don <joshdon@...gle.com>