linux-kernel - Re: [Patch v8 4/7] sched/fair: Enable periodic update of average thermal pressure

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Message-ID: <20200117134501.GA19008@google.com>
Date:   Fri, 17 Jan 2020 13:45:01 +0000
From:   Quentin Perret <qperret@...gle.com>
To:     Vincent Guittot <vincent.guittot@...aro.org>
Cc:     Peter Zijlstra <peterz@...radead.org>,
        Thara Gopinath <thara.gopinath@...aro.org>,
        Ingo Molnar <mingo@...hat.com>,
        Ionela Voinescu <ionela.voinescu@....com>,
        Dietmar Eggemann <dietmar.eggemann@....com>,
        Zhang Rui <rui.zhang@...el.com>,
        Daniel Lezcano <daniel.lezcano@...aro.org>,
        viresh kumar <viresh.kumar@...aro.org>,
        linux-kernel <linux-kernel@...r.kernel.org>,
        Amit Kachhap <amit.kachhap@...il.com>,
        Javi Merino <javi.merino@...nel.org>,
        Amit Kucheria <amit.kucheria@...durent.com>,
        Android Kernel Team <kernel-team@...roid.com>
Subject: Re: [Patch v8 4/7] sched/fair: Enable periodic update of average
 thermal pressure

On Friday 17 Jan 2020 at 14:17:36 (+0100), Vincent Guittot wrote:
> On Fri, 17 Jan 2020 at 13:31, Peter Zijlstra <peterz@...radead.org> wrote:
> > Sure, but we should still track the thermals unconditionally, even if
> > only CFS consumes it.
> 
> I agree, tracking thermal pressure should happen even if no cfs task are running

Bah, I got confused with cpu_capacity update stuff. This is for the PELT
signal, so +1 this should be updated unconditionally.

Thanks,
Quentin