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

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Message-ID: <20210908203828.5tljgqezi6nqywi2@oracle.com>
Date:   Wed, 8 Sep 2021 16:38:28 -0400
From:   Daniel Jordan <daniel.m.jordan@...cle.com>
To:     Josh Don <joshdon@...gle.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 Thu, Sep 02, 2021 at 06:21:09PM -0700, Josh Don wrote:
> 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?

Sure, here it comes.