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Date:   Fri, 2 Sep 2022 10:45:08 +0200
From:   Peter Zijlstra <peterz@infradead.org>
To:     Dietmar Eggemann <dietmar.eggemann@arm.com>
Cc:     Ingo Molnar <mingo@kernel.org>,
        Vincent Guittot <vincent.guittot@linaro.org>,
        Morten Rasmussen <morten.rasmussen@arm.com>,
        Vincent Donnefort <vdonnefort@google.com>,
        Quentin Perret <qperret@google.com>,
        Patrick Bellasi <patrick.bellasi@matbug.net>,
        Abhijeet Dharmapurikar <adharmap@quicinc.com>,
        Jian-Min <Jian-Min.Liu@mediatek.com>,
        Qais Yousef <qais.yousef@arm.com>, linux-kernel@vger.kernel.org
Subject: Re: [RFC PATCH 1/1] sched/pelt: Introduce PELT multiplier
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On Fri, Sep 02, 2022 at 09:53:22AM +0200, Dietmar Eggemann wrote:
> >  void update_rq_clock(struct rq *rq)
> > --- a/kernel/sched/features.h
> > +++ b/kernel/sched/features.h
> > @@ -101,3 +101,6 @@ SCHED_FEAT(LATENCY_WARN, false)
> >  
> >  SCHED_FEAT(ALT_PERIOD, true)
> >  SCHED_FEAT(BASE_SLICE, true)
> > +
> > +SCHED_FEAT(PELT_M2, false)
> > +SCHED_FEAT(PELT_M4, false)
> 
> The sched features interface would definitely be much less official but
> I think it's not useful for Android since they don't mount debugfs anymore.

Well, they can haz a small patch that sets either one or both to true,
no?