linux-kernel - Re: [RFC PATCH v2 2/6] sched: Introduce energy models of CPUs

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Message-ID: <20180413083730.GA3470@e108498-lin.cambridge.arm.com>
Date:   Fri, 13 Apr 2018 09:37:31 +0100
From:   Quentin Perret <quentin.perret@....com>
To:     Viresh Kumar <viresh.kumar@...aro.org>
Cc:     Dietmar Eggemann <dietmar.eggemann@....com>,
        linux-kernel@...r.kernel.org,
        Peter Zijlstra <peterz@...radead.org>,
        Thara Gopinath <thara.gopinath@...aro.org>,
        linux-pm@...r.kernel.org,
        Morten Rasmussen <morten.rasmussen@....com>,
        Chris Redpath <chris.redpath@....com>,
        Patrick Bellasi <patrick.bellasi@....com>,
        Valentin Schneider <valentin.schneider@....com>,
        "Rafael J . Wysocki" <rjw@...ysocki.net>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Vincent Guittot <vincent.guittot@...aro.org>,
        Todd Kjos <tkjos@...gle.com>,
        Joel Fernandes <joelaf@...gle.com>,
        Juri Lelli <juri.lelli@...hat.com>,
        Steve Muckle <smuckle@...gle.com>,
        Eduardo Valentin <edubezval@...il.com>
Subject: Re: [RFC PATCH v2 2/6] sched: Introduce energy models of CPUs

On Friday 13 Apr 2018 at 09:32:53 (+0530), Viresh Kumar wrote:
[...]
> And for the whole OPP discussion, perhaps we should have another
> architecture specific callback which the scheduler can call to get a
> ready-made energy model with all the structures filled in. That way
> the OPP specific stuff will move to the architecture specific
> callback.

Yes, that's another possible solution indeed. Actually, it's already on
the list of ideas to be dicussed in OSPM ;-)

Thanks,
Quentin