linux-kernel - Re: [PATCH 2/2] sched/fair: Add document for burstable CFS bandwidth

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Message-ID: <20210823205321.vpr67zysxzf2uhoh@oracle.com>
Date:   Mon, 23 Aug 2021 16:53:21 -0400
From:   Daniel Jordan <daniel.m.jordan@...cle.com>
To:     Huaixin Chang <changhuaixin@...ux.alibaba.com>
Cc:     linux-kernel@...r.kernel.org, peterz@...radead.org,
        anderson@...unc.edu, baruah@...tl.edu, bsegall@...gle.com,
        dietmar.eggemann@....com, dtcccc@...ux.alibaba.com,
        juri.lelli@...hat.com, khlebnikov@...dex-team.ru,
        luca.abeni@...tannapisa.it, mgorman@...e.de, mingo@...hat.com,
        odin@...d.al, odin@...dal.com, pauld@...head.com, pjt@...gle.com,
        rostedt@...dmis.org, shanpeic@...ux.alibaba.com, tj@...nel.org,
        tommaso.cucinotta@...tannapisa.it, vincent.guittot@...aro.org,
        xiyou.wangcong@...il.com
Subject: Re: [PATCH 2/2] sched/fair: Add document for burstable CFS bandwidth

On Mon, Aug 16, 2021 at 03:08:49PM +0800, Huaixin Chang wrote:
> diff --git a/Documentation/admin-guide/cgroup-v2.rst b/Documentation/admin-guide/cgroup-v2.rst
> index 5c7377b5bd3e..c79477089c53 100644
> --- a/Documentation/admin-guide/cgroup-v2.rst
> +++ b/Documentation/admin-guide/cgroup-v2.rst
> @@ -1047,6 +1049,12 @@ All time durations are in microseconds.
>  	$PERIOD duration.  "max" for $MAX indicates no limit.  If only
>  	one number is written, $MAX is updated.
>  
> +  cpu.max.burst
> +	A read-write single value file which exists on non-root
> +	cgroups.  The default is "0".
> +
> +	The burst in the range [0, $QUOTA].

FWIW, max/$MAX are used in this file instead of quota, so it seems
clearer to stick to that.