linux-kernel - Re: [PATCH v3 09/14] sched/core: uclamp: propagate parent clamps

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Message-ID: <20180820122849.GN2960@e110439-lin>
Date:   Mon, 20 Aug 2018 13:28:49 +0100
From:   Patrick Bellasi <patrick.bellasi@....com>
To:     Dietmar Eggemann <dietmar.eggemann@....com>
Cc:     linux-kernel@...r.kernel.org, linux-pm@...r.kernel.org,
        Ingo Molnar <mingo@...hat.com>,
        Peter Zijlstra <peterz@...radead.org>,
        Tejun Heo <tj@...nel.org>,
        "Rafael J . Wysocki" <rafael.j.wysocki@...el.com>,
        Viresh Kumar <viresh.kumar@...aro.org>,
        Vincent Guittot <vincent.guittot@...aro.org>,
        Paul Turner <pjt@...gle.com>,
        Morten Rasmussen <morten.rasmussen@....com>,
        Juri Lelli <juri.lelli@...hat.com>,
        Todd Kjos <tkjos@...gle.com>,
        Joel Fernandes <joelaf@...gle.com>,
        Steve Muckle <smuckle@...gle.com>,
        Suren Baghdasaryan <surenb@...gle.com>
Subject: Re: [PATCH v3 09/14] sched/core: uclamp: propagate parent clamps

On 20-Aug 12:01, Dietmar Eggemann wrote:
> On 08/17/2018 05:50 PM, Dietmar Eggemann wrote:
> >On 08/17/2018 04:45 PM, Patrick Bellasi wrote:
> >>On 17-Aug 15:43, Dietmar Eggemann wrote:
> >>>On 08/06/2018 06:39 PM, Patrick Bellasi wrote:
> 
> [...]
> 
> >>AFAIK the default hierarcy (cgroups v2) has a much more stricy set of
> >>requirements for the "delegation model".
> >
> >Could be ... I guess I have to study this more.
> 
> So I see that this idea with the .effective files is used in Waiman's new
> cpuset cgroupv2 controller proposal.
> 
> The cpu controller with you util clamp extension has to be usable under
> cgroupv2 and cgroupv1, I assume?

Right, and in general what works for v2 should work fine for v1 too.

Best,
Patrick

-- 
#include <best/regards.h>

Patrick Bellasi