Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1031418AbXEDRnk (ORCPT ); Fri, 4 May 2007 13:43:40 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1031434AbXEDRnk (ORCPT ); Fri, 4 May 2007 13:43:40 -0400 Received: from mx1.redhat.com ([66.187.233.31]:60067 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1031418AbXEDRni (ORCPT ); Fri, 4 May 2007 13:43:38 -0400 Message-ID: <463B7097.7070300@redhat.com> Date: Fri, 04 May 2007 13:42:47 -0400 From: Chuck Ebbert Organization: Red Hat User-Agent: Thunderbird 1.5.0.10 (X11/20070302) MIME-Version: 1.0 To: =?UTF-8?B?UmFmYcWCIEJpbHNraQ==?= CC: Jan Engelhardt , Dave Jones , cpufreq@lists.linux.org.uk, linux-kernel@vger.kernel.org Subject: Re: cpufreq longhaul locks up References: <463B687D.1020600@interia.pl> In-Reply-To: <463B687D.1020600@interia.pl> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2304 Lines: 58 Rafał Bilski wrote: >> Hi, > Hello all >> I found that setting the cpufreq governor to ondemand making the box >> lock up solid in 2.6.20.2 and 2.6.21 after a few seconds. >> [...] > > I can't explain this. Some motherboards are running fine, some don't. > I'm running longhaul too. It is working fine. No lockups at all. > So far I heard only about one Epia which had problems with longhaul. > It was almost like my Epia but older. > What is possible: > - some chipsets revisions are broken and aren't blocking DMA, > - special setup is required, some versions of BIOS are doing > necessary things, some don't, > - some chipsets revisions are broken and drivers are not aware. At > the beginning Unichrome driver was causing lockups on my machine, but > Openchrome was fine. Longhaul may trigger, somehow, other hardware bug. > The below is in the cpufreq git tree. (Maybe also ondemand needs to be disabled for Longhaul?) From: Rafal Bilski Date: Sun, 22 Apr 2007 10:26:04 +0000 (+0200) Subject: [CPUFREQ] Longhaul - Revert Longhaul ver. 2 X-Git-Url: http://git.kernel.org/?p=linux%2Fkernel%2Fgit%2Fdavej%2Fcpufreq.git;a=commitdiff_plain;h=07844252ffd81ec192a62014bada1016c9703765 [CPUFREQ] Longhaul - Revert Longhaul ver. 2 There is something wrong with this code. It needs more testing. It is better to disable it for now because support for some machines will be broken. Signed-off-by: Rafal Bilski Signed-off-by: Dave Jones --- diff --git a/arch/i386/kernel/cpu/cpufreq/longhaul.c b/arch/i386/kernel/cpu/cpufreq/longhaul.c index e5fee72..a3df9c0 100644 --- a/arch/i386/kernel/cpu/cpufreq/longhaul.c +++ b/arch/i386/kernel/cpu/cpufreq/longhaul.c @@ -683,7 +683,7 @@ static int __init longhaul_cpu_init(struct cpufreq_policy *policy) sizeof(samuel2_eblcr)); break; case 1 ... 15: - longhaul_version = TYPE_LONGHAUL_V2; + longhaul_version = TYPE_LONGHAUL_V1; if (c->x86_mask < 8) { cpu_model = CPU_SAMUEL2; cpuname = "C3 'Samuel 2' [C5B]"; - 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/