Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753561Ab0LPTnM (ORCPT ); Thu, 16 Dec 2010 14:43:12 -0500 Received: from casper.infradead.org ([85.118.1.10]:59472 "EHLO casper.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752904Ab0LPTnI convert rfc822-to-8bit (ORCPT ); Thu, 16 Dec 2010 14:43:08 -0500 Subject: Re: [RFC][PATCH 0/5] Reduce runqueue lock contention -v2 From: Peter Zijlstra To: frank.rowand@am.sony.com Cc: frank.rowand@gmail.com, Chris Mason , Ingo Molnar , Thomas Gleixner , Mike Galbraith , Oleg Nesterov , Paul Turner , Jens Axboe , linux-kernel@vger.kernel.org In-Reply-To: <4D0A6B03.6080603@am.sony.com> References: <20101216145602.899838254@chello.nl> <4D0A649B.9080505@am.sony.com> <4D0A6A40.2040907@am.sony.com> <4D0A6B03.6080603@am.sony.com> Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 8BIT Date: Thu, 16 Dec 2010 20:42:56 +0100 Message-ID: <1292528576.2708.81.camel@laptop> Mime-Version: 1.0 X-Mailer: Evolution 2.30.3 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 549 Lines: 13 On Thu, 2010-12-16 at 11:39 -0800, Frank Rowand wrote: > select_task_rq() uses the smp_processor_id() of the old task_cpu(p) instead > of the waking smp_processor_id(). So first you bounce the wakeup to the previous task cpu, when you do select_task_rq() and then you bounce it to the new target? -- 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/