Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933163Ab2HPTVN (ORCPT ); Thu, 16 Aug 2012 15:21:13 -0400 Received: from mga09.intel.com ([134.134.136.24]:54198 "EHLO mga09.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932106Ab2HPTVL (ORCPT ); Thu, 16 Aug 2012 15:21:11 -0400 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="4.77,780,1336374000"; d="scan'208";a="181619566" Message-ID: <502D481B.8010404@linux.intel.com> Date: Thu, 16 Aug 2012 12:20:59 -0700 From: Arjan van de Ven User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:14.0) Gecko/20120713 Thunderbird/14.0 MIME-Version: 1.0 To: Rik van Riel CC: preeti , Peter Zijlstra , Alex Shi , Suresh Siddha , vincent.guittot@linaro.org, svaidy@linux.vnet.ibm.com, Ingo Molnar , Andrew Morton , Linus Torvalds , "linux-kernel@vger.kernel.org" , Thomas Gleixner , Paul Turner Subject: Re: [discussion]sched: a rough proposal to enable power saving in scheduler References: <5028F12C.7080405@intel.com> <1345028738.31459.82.camel@twins> <502C98E8.20800@linux.vnet.ibm.com> <502CFD35.5000801@linux.intel.com> <502D3FB2.7000008@redhat.com> In-Reply-To: <502D3FB2.7000008@redhat.com> X-Enigmail-Version: 1.4.3 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 546 Lines: 13 On 8/16/2012 11:45 AM, Rik van Riel wrote: > > The c-state governor can call the scheduler code before > putting a CPU to sleep, to indicate (1) the wakeup latency > of the CPU, and (2) whether TLB and/or cache get invalidated. I don't think (2) is useful really; that basically always happens ;-) -- 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/