From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755534AbYDTViv (ORCPT ); Sun, 20 Apr 2008 17:38:51 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751827AbYDTVip (ORCPT ); Sun, 20 Apr 2008 17:38:45 -0400 Received: from the.earth.li ([217.147.81.2]:50371 "EHLO the.earth.li" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751817AbYDTVio (ORCPT ); Sun, 20 Apr 2008 17:38:44 -0400 X-Greylist: delayed 1862 seconds by postgrey-1.27 at vger.kernel.org; Sun, 20 Apr 2008 17:38:44 EDT Date: Sun, 20 Apr 2008 22:07:39 +0100 From: Simon Huggins To: Pierre Ossman Cc: Pavel Machek , linux-kernel@vger.kernel.org Subject: Re: Scheduler broken? sdhci issues with scheduling Message-ID: <20080420210738.GK28693@paranoidfreak.co.uk> References: <20080229115256.GG24533@paranoidfreak.co.uk> <20080302104031.GB3861@ucw.cz> <20080303204300.69cbe392@mjolnir.drzeus.cx> <20080303203808.GH13869@elf.ucw.cz> <20080303220530.49201544@mjolnir.drzeus.cx> <20080313211749.GN28693@paranoidfreak.co.uk> <20080315160428.6d25b4e0@mjolnir.drzeus.cx> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20080315160428.6d25b4e0@mjolnir.drzeus.cx> X-Attribution: huggie User-Agent: Mutt/1.5.13 (2006-08-11) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi Pierre, On Sat, Mar 15, 2008 at 04:04:28PM +0100, Pierre Ossman wrote: > On Thu, 13 Mar 2008 21:17:49 +0000 > Simon Huggins wrote: > > I'm happy to test bits. What do I need to do to switch time sources for > > instance? > I'm no expert, but you have the kernel parameter "clocksource" documented in Documentation/kernel-parameters. Also check the directory /sys/devices/system/clocksource for assorted runtime changes. Sorry it took so long. I'm defaulting to hpet but if I try changing clocksource to tsc, jiffies or acpi_pm with any of the patches at runtime or rebooting it seems to make no difference and sdhci doesn't work as before. I tried 2.6.25 too and it's the same story. I guess I'll just keep HZ=1000. -- ,--huggie-at-earth-dot-li--------stuff-thing-stuff----------DF5CE2B4--. _| "An excellent suggestion sir, with only two minor flaws...." - |_ | Kryten | `-------------------- http://www.earth.li/~huggie/ -------------------'