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From: Peter Zijlstra <peterz@infradead.org>
To: Odin Ugedal <odin@uged.al>
Cc: Huaixin Chang <changhuaixin@linux.alibaba.com>,
	luca.abeni@santannapisa.it, anderson@cs.unc.edu,
	baruah@wustl.edu, Benjamin Segall <bsegall@google.com>,
	Dietmar Eggemann <dietmar.eggemann@arm.com>,
	dtcccc@linux.alibaba.com, Juri Lelli <juri.lelli@redhat.com>,
	khlebnikov@yandex-team.ru,
	open list <linux-kernel@vger.kernel.org>,
	Mel Gorman <mgorman@suse.de>, Ingo Molnar <mingo@redhat.com>,
	pauld@redhead.com, Paul Turner <pjt@google.com>,
	Steven Rostedt <rostedt@goodmis.org>,
	Shanpei Chen <shanpeic@linux.alibaba.com>,
	Tejun Heo <tj@kernel.org>,
	tommaso.cucinotta@santannapisa.it,
	Vincent Guittot <vincent.guittot@linaro.org>,
	xiyou.wangcong@gmail.com
Subject: Re: [PATCH v6 1/3] sched/fair: Introduce the burstable CFS controller
Date: Wed, 23 Jun 2021 10:47:45 +0200	[thread overview]
Message-ID: <YNL1MWe3PzD4YGAr@hirez.programming.kicks-ass.net> (raw)
In-Reply-To: <CAFpoUr1Q-DuvXhPtX=bNdjg6xVcyBF=Qm8kz+HG7pGtNtu9X4A@mail.gmail.com>

On Tue, Jun 22, 2021 at 05:27:30PM +0200, Odin Ugedal wrote:

> diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c
> index bfaa6e1f6067..ab809bd11785 100644
> --- a/kernel/sched/fair.c
> +++ b/kernel/sched/fair.c
> @@ -5277,6 +5277,7 @@ static enum hrtimer_restart
> sched_cfs_period_timer(struct hrtimer *timer)
>                         if (new < max_cfs_quota_period) {
>                                 cfs_b->period = ns_to_ktime(new);
>                                 cfs_b->quota *= 2;
> +                               cfs_b->burst *= 2;
> 
>                                 pr_warn_ratelimited(
>         "cfs_period_timer[cpu%d]: period too short, scaling up (new
> cfs_period_us = %lld, cfs_quota_us = %lld)\n",

Thanks, folded that.

  reply	other threads:[~2021-06-23  8:50 UTC|newest]

Thread overview: 17+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-06-21  9:27 [PATCH v6 0/3] sched/fair: Burstable CFS bandwidth controller Huaixin Chang
2021-06-21  9:27 ` [PATCH v6 1/3] sched/fair: Introduce the burstable CFS controller Huaixin Chang
2021-06-22 13:19   ` Peter Zijlstra
2021-06-22 18:57     ` Benjamin Segall
2021-06-24  8:48     ` changhuaixin
2021-06-24  9:28       ` Peter Zijlstra
2021-06-22 15:27   ` Odin Ugedal
2021-06-23  8:47     ` Peter Zijlstra [this message]
2021-06-24  8:45     ` changhuaixin
2021-06-24  7:39   ` [tip: sched/core] " tip-bot2 for Huaixin Chang
2021-06-21  9:27 ` [PATCH v6 2/3] sched/fair: Add cfs bandwidth burst statistics Huaixin Chang
2021-06-28 15:00   ` Peter Zijlstra
2021-06-28 15:12     ` Peter Zijlstra
2021-07-02 11:31     ` changhuaixin
2021-06-21  9:28 ` [PATCH v6 3/3] sched/fair: Add document for burstable CFS bandwidth Huaixin Chang
2021-06-22 15:26   ` Odin Ugedal
2021-06-22 14:25 ` [PATCH v6 0/3] sched/fair: Burstable CFS bandwidth controller Tejun Heo

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