Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758561Ab2EOP1V (ORCPT ); Tue, 15 May 2012 11:27:21 -0400 Received: from mail-qa0-f46.google.com ([209.85.216.46]:45998 "EHLO mail-qa0-f46.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756598Ab2EOP1Q convert rfc822-to-8bit (ORCPT ); Tue, 15 May 2012 11:27:16 -0400 MIME-Version: 1.0 In-Reply-To: <20120515151958.GD2461@linux.vnet.ibm.com> References: <1337084609.27020.156.camel@laptop> <1337086834.27020.162.camel@laptop> <20120515151958.GD2461@linux.vnet.ibm.com> Date: Tue, 15 May 2012 17:27:15 +0200 Message-ID: Subject: Re: Plumbers: Tweaking scheduler policy micro-conf RFP From: Vincent Guittot To: paulmck@linux.vnet.ibm.com Cc: Peter Zijlstra , smuckle@quicinc.com, khilman@ti.com, Robin.Randhawa@arm.com, suresh.b.siddha@intel.com, thebigcorporation@gmail.com, venki@google.com, panto@antoniou-consulting.com, mingo@elte.hu, paul.brett@intel.com, pdeschrijver@nvidia.com, pjt@google.com, efault@gmx.de, fweisbec@gmail.com, geoff@infradead.org, rostedt@goodmis.org, tglx@linutronix.de, amit.kucheria@linaro.org, linux-kernel , linaro-sched-sig@lists.linaro.org, Morten Rasmussen , Juri Lelli Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 8BIT Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2023 Lines: 47 On 15 May 2012 17:19, Paul E. McKenney wrote: > On Tue, May 15, 2012 at 05:05:47PM +0200, Vincent Guittot wrote: >> On 15 May 2012 15:00, Peter Zijlstra wrote: >> > On Tue, 2012-05-15 at 14:57 +0200, Vincent Guittot wrote: >> >> >> >> Not sure that nobody cares but it's much more that scheduler, >> >> load_balance and sched_mc are sensible enough that it's difficult to >> >> ensure that a modification will not break everything for someone >> >> else. >> > >> > Thing is, its already broken, there's nothing else to break :-) >> >> sched_mc is the only power-aware knob in the current scheduler. It's >> far from being perfect but it seems to work on some ARM platform at >> least. You mentioned at the scheduler mini-summit that we need a >> cleaner replacement and everybody has agreed on that point. Is anybody >> working on it yet ? and can we discuss at Plumber's what this >> replacement would look like ? > > Hello, Vincent, > > If I understand the patch from a first glance, Peter is doing what > everyone agreed to at the scheduler minisummit back in February. Yes, that's why I propose to discuss about the replacement during the next Plumber conference > From the notes from that meeting at: > > https://wiki.linaro.org/WorkingGroups/PowerManagement/Doc/HMPscheduling > > See the line reading "Remove sched_mc. [Peter Zijlstra]". > > Or am I confused about what Peter's patch does? > > ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?Thanx, Paul > > -- > To unsubscribe from this list: send the line "unsubscribe linux-kernel" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at ?http://vger.kernel.org/majordomo-info.html > Please read the FAQ at ?http://www.tux.org/lkml/ -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/