Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756111Ab3JNQKJ (ORCPT ); Mon, 14 Oct 2013 12:10:09 -0400 Received: from service87.mimecast.com ([91.220.42.44]:45236 "EHLO service87.mimecast.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750837Ab3JNQKH convert rfc822-to-8bit (ORCPT ); Mon, 14 Oct 2013 12:10:07 -0400 Date: Mon, 14 Oct 2013 17:10:11 +0100 From: Morten Rasmussen To: Peter Zijlstra Cc: "mingo@kernel.org" , "pjt@google.com" , "arjan@linux.intel.com" , "rjw@sisk.pl" , "dirk.j.brandewie@intel.com" , "vincent.guittot@linaro.org" , "alex.shi@linaro.org" , "preeti@linux.vnet.ibm.com" , "efault@gmx.de" , "corbet@lwn.net" , "tglx@linutronix.de" , Catalin Marinas , "linux-kernel@vger.kernel.org" , "linaro-kernel@lists.linaro.org" Subject: Re: [RFC][PATCH 4/7] sched: power: Remove power capacity hints for kworker threads Message-ID: <20131014161011.GO31039@e103034-lin> References: <1381511957-29776-1-git-send-email-morten.rasmussen@arm.com> <1381511957-29776-5-git-send-email-morten.rasmussen@arm.com> <20131014133356.GN3081@twins.programming.kicks-ass.net> MIME-Version: 1.0 In-Reply-To: <20131014133356.GN3081@twins.programming.kicks-ass.net> User-Agent: Mutt/1.5.21 (2010-09-15) X-OriginalArrivalTime: 14 Oct 2013 16:10:03.0103 (UTC) FILETIME=[D71136F0:01CEC8F7] X-MC-Unique: 113101417100500901 Content-Type: text/plain; charset=WINDOWS-1252 Content-Transfer-Encoding: 8BIT Content-Disposition: inline Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 933 Lines: 22 On Mon, Oct 14, 2013 at 02:33:56PM +0100, Peter Zijlstra wrote: > On Fri, Oct 11, 2013 at 06:19:14PM +0100, Morten Rasmussen wrote: > > Removing power hints for kworker threads enables easier use of > > workqueues in the power driver late callback. That would otherwise > > lead to an endless loop unless it is prevented in the power driver. > > There's many kworker users; some of them actually consume lots of > cputime. Therefore how did you come to the conclusion that excepting all > users was the better choice of a little added complexity in the one > place where it actually matters? Agreed that it is not ideal. I will find a better solution for this problem. Thanks, Morten -- 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/