From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755679Ab1AaSYw (ORCPT ); Mon, 31 Jan 2011 13:24:52 -0500 Received: from ogre.sisk.pl ([217.79.144.158]:54688 "EHLO ogre.sisk.pl" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751950Ab1AaSYu convert rfc822-to-8bit (ORCPT ); Mon, 31 Jan 2011 13:24:50 -0500 From: "Rafael J. Wysocki" To: Richard =?utf-8?q?Sch=C3=BCtz?= Subject: Re: Common boot/shutdown issues with the latest 2.6.37 (Mostly Asus laptops) Date: Mon, 31 Jan 2011 19:24:32 +0100 User-Agent: KMail/1.13.5 (Linux/2.6.38-rc2+; KDE/4.4.4; x86_64; ; ) Cc: Ozan =?utf-8?q?=C3=87a=C4=9Flayan?= , Lionel Debroux , linux-acpi@vger.kernel.org, linux-kernel@vger.kernel.org, platform-driver-x86@vger.kernel.org, colin.king@canonical.com References: <556624.21214.qm@web28409.mail.ukl.yahoo.com> <201101311123.14704.rjw@sisk.pl> <4D468F1F.8030704@t-online.de> In-Reply-To: <4D468F1F.8030704@t-online.de> MIME-Version: 1.0 Content-Type: Text/Plain; charset="utf-8" Content-Transfer-Encoding: 8BIT Message-Id: <201101311924.33098.rjw@sisk.pl> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Monday, January 31, 2011, Richard Schütz wrote: > >>>> I'll compile a kernel with CONFIG_NO_HZ to see what happens but how do I > >>>> disable cpuidle during boot? I've checked the kernel-parameters.txt but > >>>> there's no cpuidle related boot parameter there. > >>> > >>> Booting with intel_idle.max_cstate=0 should do the trick. > >> > >> intel_idle.max_cstate=0 causes a fallback to the acpi_idle driver. So it > >> does not disable the C-states directly. > > > > What about not building the acpi_idle driver, then? > > Or just use the processor.max_cstate parameter then. As I wrote a couple of messages ago, https://lkml.org/lkml/2011/1/31/52 . Sure, that should do the trick too. Thanks, Rafael