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From: Peter Zijlstra <peterz@infradead.org>
To: Daniel Lezcano <daniel.lezcano@linaro.org>
Cc: mingo@kernel.org, linux-kernel@vger.kernel.org,
	linaro-kernel@lists.linaro.org, alex.shi@linaro.org
Subject: Re: [PATCH 4/4] sched: Idle task shortcut optimization
Date: Fri, 17 Jan 2014 16:23:52 +0100	[thread overview]
Message-ID: <20140117152352.GL11314@laptop.programming.kicks-ass.net> (raw)
In-Reply-To: <52D947B3.3010601@linaro.org>

On Fri, Jan 17, 2014 at 04:09:39PM +0100, Daniel Lezcano wrote:
> On 01/17/2014 03:09 PM, Peter Zijlstra wrote:
> >On Fri, Jan 17, 2014 at 10:04:04AM +0100, Daniel Lezcano wrote:
> >>+	schedstat_inc(rq, sched_goidle);
> >>+#ifdef CONFIG_SMP
> >>+	/* Trigger the post schedule to do an idle_enter for CFS */
> >>+	rq->post_schedule = 1;
> >>+#endif
> >>+	return rq->idle;
> >
> >Urgh, that retains the stupid idle crap like it is.
> >
> >I've not yet tested this, but is there a reason something like the below
> >couldn't work?
> 
> I tested it by running hackbench and it seems to work as expected.

Thanks, I was still looking through the throttling. I'll keep it then
:-)

  reply	other threads:[~2014-01-17 15:23 UTC|newest]

Thread overview: 24+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-01-17  9:04 [PATCH 1/4] sched: Remove 'cpu' parameter for idle_balance() Daniel Lezcano
2014-01-17  9:04 ` [PATCH 2/4] sched: Fix race in idle_balance() Daniel Lezcano
2014-01-17 13:33   ` Peter Zijlstra
2014-01-17 13:44     ` Daniel Lezcano
2014-02-11 12:15   ` [tip:sched/core] " tip-bot for Daniel Lezcano
2014-01-17  9:04 ` [PATCH 3/4] sched: Move idle_stamp up to the core Daniel Lezcano
2014-02-11 12:16   ` [tip:sched/core] sched: Move rq->idle_stamp " tip-bot for Daniel Lezcano
2014-01-17  9:04 ` [PATCH 4/4] sched: Idle task shortcut optimization Daniel Lezcano
2014-01-17 14:09   ` Peter Zijlstra
2014-01-17 15:09     ` Daniel Lezcano
2014-01-17 15:23       ` Peter Zijlstra [this message]
2014-01-17 14:26   ` Peter Zijlstra
2014-01-17 15:06     ` Daniel Lezcano
2014-01-17 15:23       ` Peter Zijlstra
2014-01-17 15:26         ` Daniel Lezcano
2014-01-17 15:33           ` Peter Zijlstra
2014-01-17 16:06             ` Daniel Lezcano
2014-01-17 16:37             ` Daniel Lezcano
2014-01-17 16:45               ` [PATCH 1/2] sched/deadline: Fix compilation error Daniel Lezcano
2014-01-17 16:45                 ` [PATCH 2/2] sched: Use idle task shortcut Daniel Lezcano
2014-01-21  8:41             ` [PATCH 4/4] sched: Idle task shortcut optimization Daniel Lezcano
2014-01-21  9:06               ` Peter Zijlstra
2014-01-21  9:28                 ` Daniel Lezcano
2014-02-11 12:15 ` [tip:sched/core] sched: Remove 'cpu' parameter from idle_balance( ) tip-bot for Daniel Lezcano

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