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

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Message-Id: <20210820010403.946838-2-joshdon@google.com>
Date:   Mon,  6 Sep 2021 20:47:02 +0800
From:   alexs@...nel.org
To:     alexs@...nel.org, Ingo Molnar <mingo@...hat.com>,
        Peter Zijlstra <peterz@...radead.org>,
        Juri Lelli <juri.lelli@...hat.com>,
        Vincent Guittot <vincent.guittot@...aro.org>
Cc:     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@...r.kernel.org, Josh Don <joshdon@...gle.com>
Subject: Re: [PATCH v3 1/4] sched: cgroup SCHED_IDLE support

...
 
> For now, we maintain the existing SCHED_IDLE semantics. Future patches
> may make improvements that extend how we treat SCHED_IDLE entities.
> 
> The per-task_group idle field is an integer that currently only holds
> either a 0 or a 1. This is explicitly typed as an integer to allow for
> further extensions to this API. For example, a negative value may
> indicate a highly latency-sensitive cgroup that should be preferred for
> preemption/placement/etc.

Hi Josh,

Sounds there is a ready solutions for colocation problem, isn't there?
I'd like to evaluate its effects if it could be sent out.

Thanks
Alex
>