linux-kernel - Re: [PATCH v2 1/2] sched: cgroup SCHED

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Message-ID: <CABk29Ns5TdiiYZvY3sdA-Twgcvt3pOnRmZq4WSzoesxBrFmPeg@mail.gmail.com>
Date:   Thu, 5 Aug 2021 16:54:09 -0700
From:   Josh Don <joshdon@...gle.com>
To:     Tejun Heo <tj@...nel.org>
Cc:     Peter Zijlstra <peterz@...radead.org>,
        Ingo Molnar <mingo@...hat.com>,
        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>,
        Rik van Riel <riel@...riel.com>,
        linux-kernel <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v2 1/2] sched: cgroup SCHED_IDLE support

On Thu, Aug 5, 2021 at 10:13 AM Tejun Heo <tj@...nel.org> wrote:
>
> Interface-wise, writing 1 to idle file is fine. This does move away
> the interface from being a purely semantical weight tree, which is a
> concern and I have a difficult time seeing that the stated benefits
> are significant enough to justify the changes. That said, this is
> primarily a scheduler decision, so if you think the addition is
> justified, please go ahead.

Thanks for taking a look Tejun. I won't restate the use-cases from
past threads here, but ideally the capabilities introduced in this
series will make SCHED_IDLE more useful (internally, we've certainly
found that to be the case :)).

Best,
Josh