linux-kernel - Re: [patch v8 5/9] sched: update cpu load after task

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Message-ID: <CAPM31RKkBHkL69K4AnEmmQcMaj2rfs6cWbc2WksT9G8=btjsQw@mail.gmail.com>
Date:	Mon, 17 Jun 2013 04:54:02 -0700
From:	Paul Turner <pjt@...gle.com>
To:	Alex Shi <alex.shi@...el.com>
Cc:	Ingo Molnar <mingo@...hat.com>,
	Peter Zijlstra <peterz@...radead.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Borislav Petkov <bp@...en8.de>,
	Namhyung Kim <namhyung@...nel.org>,
	Mike Galbraith <efault@....de>,
	Morten Rasmussen <morten.rasmussen@....com>,
	Vincent Guittot <vincent.guittot@...aro.org>,
	Preeti U Murthy <preeti@...ux.vnet.ibm.com>,
	Viresh Kumar <viresh.kumar@...aro.org>,
	LKML <linux-kernel@...r.kernel.org>,
	Mel Gorman <mgorman@...e.de>, Rik van Riel <riel@...hat.com>,
	Michael Wang <wangyun@...ux.vnet.ibm.com>,
	Jason Low <jason.low2@...com>,
	Changlong Xie <changlongx.xie@...el.com>, sgruszka@...hat.com,
	Frédéric Weisbecker <fweisbec@...il.com>
Subject: Re: [patch v8 5/9] sched: update cpu load after task_tick.

On Fri, Jun 7, 2013 at 12:20 AM, Alex Shi <alex.shi@...el.com> wrote:
> To get the latest runnable info, we need do this cpuload update after
> task_tick.
>
> Signed-off-by: Alex Shi <alex.shi@...el.com>

Reviewed-by: Paul Turner <pjt@...gle.com>

> ---
>  kernel/sched/core.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/kernel/sched/core.c b/kernel/sched/core.c
> index 6f226c2..05176b8 100644
> --- a/kernel/sched/core.c
> +++ b/kernel/sched/core.c
> @@ -2152,8 +2152,8 @@ void scheduler_tick(void)
>
>         raw_spin_lock(&rq->lock);
>         update_rq_clock(rq);
> -       update_cpu_load_active(rq);
>         curr->sched_class->task_tick(rq, curr, 0);
> +       update_cpu_load_active(rq);
>         raw_spin_unlock(&rq->lock);
>
>         perf_event_task_tick();
> --
> 1.7.12
>
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