linux-kernel - Re: [patch v4 08/18] Revert "sched: Introduce temporary FAIR_GROUP

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Message-ID: <1360664874.4485.18.camel@laptop>
Date:	Tue, 12 Feb 2013 11:27:54 +0100
From:	Peter Zijlstra <peterz@...radead.org>
To:	Alex Shi <alex.shi@...el.com>
Cc:	torvalds@...ux-foundation.org, mingo@...hat.com,
	tglx@...utronix.de, akpm@...ux-foundation.org,
	arjan@...ux.intel.com, bp@...en8.de, pjt@...gle.com,
	namhyung@...nel.org, efault@....de, vincent.guittot@...aro.org,
	gregkh@...uxfoundation.org, preeti@...ux.vnet.ibm.com,
	viresh.kumar@...aro.org, linux-kernel@...r.kernel.org
Subject: Re: [patch v4 08/18] Revert "sched: Introduce temporary
 FAIR_GROUP_SCHED dependency for load-tracking"

On Thu, 2013-01-24 at 11:06 +0800, Alex Shi wrote:
> Remove CONFIG_FAIR_GROUP_SCHED that covers the runnable info, then
> we can use runnable load variables.
> 
It would be nice if we could quantify the performance hit of doing so.
Haven't yet looked at later patches to see if we remove anything to
off-set this.

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