linux-kernel - Re: [discussion]sched: a rough proposal to enable power saving in scheduler

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Date:	Mon, 20 Aug 2012 16:52:03 +0100
From:	Matthew Garrett <mjg59@...f.ucam.org>
To:	Christoph Lameter <cl@...ux.com>
Cc:	Arjan van de Ven <arjan@...ux.intel.com>,
	Alex Shi <alex.shi@...el.com>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Suresh Siddha <suresh.b.siddha@...el.com>,
	vincent.guittot@...aro.org, svaidy@...ux.vnet.ibm.com,
	Ingo Molnar <mingo@...nel.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [discussion]sched: a rough proposal to enable power saving in
 scheduler

On Mon, Aug 20, 2012 at 03:47:54PM +0000, Christoph Lameter wrote:

> So please make sure that there are obvious and easy ways to switch this
> stuff off or provide "low latency" know that keeps the system from
> assuming that idle time means that full performance is not needed.

That seems like an issue for cpuidle, not the scheduler. Does pm_qos not 
already do what you want?

-- 
Matthew Garrett | mjg59@...f.ucam.org
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