linux-kernel - Re: [PATCH 21/40] autonuma: avoid CFS select_task_rq

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Message-ID: <4FEDFD0F.7070207@redhat.com>
Date:	Fri, 29 Jun 2012 15:07:59 -0400
From:	Rik van Riel <riel@...hat.com>
To:	Peter Zijlstra <a.p.zijlstra@...llo.nl>
CC:	Andrea Arcangeli <aarcange@...hat.com>,
	linux-kernel@...r.kernel.org, linux-mm@...ck.org,
	Hillf Danton <dhillf@...il.com>, Dan Smith <danms@...ibm.com>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...e.hu>, Paul Turner <pjt@...gle.com>,
	Suresh Siddha <suresh.b.siddha@...el.com>,
	Mike Galbraith <efault@....de>,
	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>,
	Lai Jiangshan <laijs@...fujitsu.com>,
	Bharata B Rao <bharata.rao@...il.com>,
	Lee Schermerhorn <Lee.Schermerhorn@...com>,
	Johannes Weiner <hannes@...xchg.org>,
	Srivatsa Vaddagiri <vatsa@...ux.vnet.ibm.com>,
	Christoph Lameter <cl@...ux.com>,
	Alex Shi <alex.shi@...el.com>,
	Mauricio Faria de Oliveira <mauricfo@...ux.vnet.ibm.com>,
	Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>,
	Don Morris <don.morris@...com>,
	Benjamin Herrenschmidt <benh@...nel.crashing.org>
Subject: Re: [PATCH 21/40] autonuma: avoid CFS select_task_rq_fair to return
 -1

On 06/29/2012 03:05 PM, Peter Zijlstra wrote:
> On Fri, 2012-06-29 at 14:57 -0400, Rik van Riel wrote:
>> Either this is a scheduler bugfix, in which case you
>> are better off submitting it separately and reducing
>> the size of your autonuma patch queue, or this is a
>> behaviour change in the scheduler that needs better
>> arguments than a 1-line changelog.
>
> I've only said this like 2 or 3 times.. :/

I'll keep saying it until Andrea has fixed it :)

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