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From:   Valentin Schneider <valentin.schneider@arm.com>
To:     Will Deacon <will@kernel.org>, linux-arm-kernel@lists.infradead.org
Cc:     linux-arch@vger.kernel.org, linux-kernel@vger.kernel.org,
        Will Deacon <will@kernel.org>,
        Catalin Marinas <catalin.marinas@arm.com>,
        Marc Zyngier <maz@kernel.org>,
        Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        Peter Zijlstra <peterz@infradead.org>,
        Morten Rasmussen <morten.rasmussen@arm.com>,
        Qais Yousef <qais.yousef@arm.com>,
        Suren Baghdasaryan <surenb@google.com>,
        Quentin Perret <qperret@google.com>, Tejun Heo <tj@kernel.org>,
        Johannes Weiner <hannes@cmpxchg.org>,
        Ingo Molnar <mingo@redhat.com>,
        Juri Lelli <juri.lelli@redhat.com>,
        Vincent Guittot <vincent.guittot@linaro.org>,
        "Rafael J. Wysocki" <rjw@rjwysocki.net>,
        Dietmar Eggemann <dietmar.eggemann@arm.com>,
        Daniel Bristot de Oliveira <bristot@redhat.com>,
        Mark Rutland <mark.rutland@arm.com>, kernel-team@android.com
Subject: Re: [PATCH v9 08/20] cpuset: Cleanup cpuset_cpus_allowed_fallback() use in select_fallback_rq()
In-Reply-To: <20210608180313.11502-9-will@kernel.org>
References: <20210608180313.11502-1-will@kernel.org> <20210608180313.11502-9-will@kernel.org>
Date:   Thu, 10 Jun 2021 13:59:56 +0100
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On 08/06/21 19:03, Will Deacon wrote:
> select_fallback_rq() only needs to recheck for an allowed CPU if the
> affinity mask of the task has changed since the last check.
>
> Return a 'bool' from cpuset_cpus_allowed_fallback() to indicate whether
> the affinity mask was updated, and use this to elide the allowed check
> when the mask has been left alone.
>
> No functional change.
>
> Suggested-by: Valentin Schneider <valentin.schneider@arm.com>
> Signed-off-by: Will Deacon <will@kernel.org>

Thanks!

Reviewed-by: Valentin Schneider <valentin.schneider@arm.com>