From patchwork Thu Oct 8 18:23:37 2009 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mike Galbraith X-Patchwork-Id: 52550 Received: from vger.kernel.org (vger.kernel.org [209.132.176.167]) by demeter.kernel.org (8.14.2/8.14.2) with ESMTP id n98IQoNW014332 for ; Thu, 8 Oct 2009 18:26:50 GMT Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1759145AbZJHSY2 (ORCPT ); Thu, 8 Oct 2009 14:24:28 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S932693AbZJHSY2 (ORCPT ); Thu, 8 Oct 2009 14:24:28 -0400 Received: from mail.gmx.net ([213.165.64.20]:58455 "HELO mail.gmx.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with SMTP id S1759089AbZJHSY1 (ORCPT ); Thu, 8 Oct 2009 14:24:27 -0400 Received: (qmail invoked by alias); 08 Oct 2009 18:23:39 -0000 Received: from p4FE19D89.dip0.t-ipconnect.de (EHLO [192.168.178.27]) [79.225.157.137] by mail.gmx.net (mp001) with SMTP; 08 Oct 2009 20:23:39 +0200 X-Authenticated: #14349625 X-Provags-ID: V01U2FsdGVkX1+xo81BRmCx/4pUc5A/dmykDigQeouXvuSFElIxk/ NNVmTsrMHbYoem Subject: Re: [.32-rc3] scheduler: iwlagn consistently high in "waiting for CPU" From: Mike Galbraith To: Frans Pop Cc: Arjan van de Ven , Linux Kernel Mailing List , Ingo Molnar , Peter Zijlstra , linux-wireless@vger.kernel.org In-Reply-To: <200910081655.37485.elendil@planet.nl> References: <200910051500.55875.elendil@planet.nl> <1254974743.7797.21.camel@marge.simson.net> <20091008064041.67219b13@infradead.org> <200910081655.37485.elendil@planet.nl> Date: Thu, 08 Oct 2009 20:23:37 +0200 Message-Id: <1255026217.6643.12.camel@marge.simson.net> Mime-Version: 1.0 X-Mailer: Evolution 2.24.1.1 X-Y-GMX-Trusted: 0 X-FuHaFi: 0.49 Sender: linux-wireless-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-wireless@vger.kernel.org difference whatsoever for you. Here, it definitely does. (shouldn't) Index: linux-2.6/kernel/sched_fair.c =================================================================== --- linux-2.6.orig/kernel/sched_fair.c +++ linux-2.6/kernel/sched_fair.c @@ -495,8 +495,10 @@ static void update_curr(struct cfs_rq *c u64 now = rq_of(cfs_rq)->clock; unsigned long delta_exec; - if (unlikely(!curr)) + if (unlikely(!curr)) { + update_rq_clock(rq_of(cfs_rq)); return; + } /* * Get the amount of time the current task was running