linux-kernel - Re: [PATCH v3 1/4] sched: cgroup SCHED

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Date:   Thu, 2 Sep 2021 18:21:09 -0700
From:   Josh Don <joshdon@...gle.com>
To:     Daniel Jordan <daniel.m.jordan@...cle.com>
Cc:     Ingo Molnar <mingo@...hat.com>,
        Peter Zijlstra <peterz@...radead.org>,
        Juri Lelli <juri.lelli@...hat.com>,
        Vincent Guittot <vincent.guittot@...aro.org>,
        Dietmar Eggemann <dietmar.eggemann@....com>,
        Steven Rostedt <rostedt@...dmis.org>,
        Ben Segall <bsegall@...gle.com>, Mel Gorman <mgorman@...e.de>,
        Daniel Bristot de Oliveira <bristot@...hat.com>,
        Paul Turner <pjt@...gle.com>,
        Oleg Rombakh <olegrom@...gle.com>,
        Viresh Kumar <viresh.kumar@...aro.org>,
        Steve Sistare <steven.sistare@...cle.com>,
        Tejun Heo <tj@...nel.org>, Rik van Riel <riel@...riel.com>,
        linux-kernel <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v3 1/4] sched: cgroup SCHED_IDLE support

On Wed, Sep 1, 2021 at 6:22 PM Daniel Jordan <daniel.m.jordan@...cle.com> wrote:
>
> On Thu, Aug 19, 2021 at 06:04:00PM -0700, Josh Don wrote:
> > +static int se_is_idle(struct sched_entity *se)
> > +{
> > +     return 0;
> > +}
>
> I'm thinking !FAIR_GROUP_SCHED is a rare thing to behold?  So not a big
> deal, but I think this wants to be
>
>         return task_has_idle_policy(task_of(se));
>
> so buddies aren't set for SCHED_IDLE.

Good point. Peter has merged this one already, do you want to send a patch?