Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754622Ab2HTPw0 (ORCPT ); Mon, 20 Aug 2012 11:52:26 -0400 Received: from cavan.codon.org.uk ([93.93.128.6]:46437 "EHLO cavan.codon.org.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751641Ab2HTPwX (ORCPT ); Mon, 20 Aug 2012 11:52:23 -0400 Date: Mon, 20 Aug 2012 16:52:03 +0100 From: Matthew Garrett To: Christoph Lameter Cc: Arjan van de Ven , Alex Shi , Peter Zijlstra , Suresh Siddha , vincent.guittot@linaro.org, svaidy@linux.vnet.ibm.com, Ingo Molnar , Andrew Morton , Linus Torvalds , "linux-kernel@vger.kernel.org" Subject: Re: [discussion]sched: a rough proposal to enable power saving in scheduler Message-ID: <20120820155203.GB29974@srcf.ucam.org> References: <5028F12C.7080405@intel.com> <20120815161911.GA14534@srcf.ucam.org> <502C7F24.6020900@intel.com> <502CFC41.1030501@linux.intel.com> <0000013944b80714-c594cc1e-de63-4901-9aa7-0b5a3d8629e5-000000@email.amazonses.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <0000013944b80714-c594cc1e-de63-4901-9aa7-0b5a3d8629e5-000000@email.amazonses.com> User-Agent: Mutt/1.5.20 (2009-06-14) X-SA-Exim-Connect-IP: X-SA-Exim-Mail-From: mjg59@cavan.codon.org.uk X-SA-Exim-Scanned: No (on cavan.codon.org.uk); SAEximRunCond expanded to false Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 669 Lines: 16 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@srcf.ucam.org -- 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/