linux-kernel - Re: [PATCH v8 09/19] sched: Introduce task_struct::user_cpus

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Message-ID: <8735txeeqj.mognet@arm.com>
Date:   Fri, 04 Jun 2021 18:12:04 +0100
From:   Valentin Schneider <valentin.schneider@....com>
To:     Will Deacon <will@...nel.org>, linux-arm-kernel@...ts.infradead.org
Cc:     linux-arch@...r.kernel.org, linux-kernel@...r.kernel.org,
        Will Deacon <will@...nel.org>,
        Catalin Marinas <catalin.marinas@....com>,
        Marc Zyngier <maz@...nel.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Peter Zijlstra <peterz@...radead.org>,
        Morten Rasmussen <morten.rasmussen@....com>,
        Qais Yousef <qais.yousef@....com>,
        Suren Baghdasaryan <surenb@...gle.com>,
        Quentin Perret <qperret@...gle.com>, Tejun Heo <tj@...nel.org>,
        Johannes Weiner <hannes@...xchg.org>,
        Ingo Molnar <mingo@...hat.com>,
        Juri Lelli <juri.lelli@...hat.com>,
        Vincent Guittot <vincent.guittot@...aro.org>,
        "Rafael J. Wysocki" <rjw@...ysocki.net>,
        Dietmar Eggemann <dietmar.eggemann@....com>,
        Daniel Bristot de Oliveira <bristot@...hat.com>,
        kernel-team@...roid.com
Subject: Re: [PATCH v8 09/19] sched: Introduce task_struct::user_cpus_ptr to track requested affinity

On 02/06/21 17:47, Will Deacon wrote:
> In preparation for saving and restoring the user-requested CPU affinity
> mask of a task, add a new cpumask_t pointer to 'struct task_struct'.
>
> If the pointer is non-NULL, then the mask is copied across fork() and
> freed on task exit.
>
> Signed-off-by: Will Deacon <will@...nel.org>

Reviewed-by: Valentin Schneider <Valentin.Schneider@....com>