From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755242AbYHJDVA (ORCPT ); Sat, 9 Aug 2008 23:21:00 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1753674AbYHJDUu (ORCPT ); Sat, 9 Aug 2008 23:20:50 -0400 Received: from mga11.intel.com ([192.55.52.93]:3790 "EHLO mga11.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753583AbYHJDUu (ORCPT ); Sat, 9 Aug 2008 23:20:50 -0400 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="4.31,336,1215414000"; d="scan'208";a="605439794" Subject: Re: Regression in 2.6.27-rc2 in acpi_processor_init() From: Zhao Yakui To: "Rafael J. Wysocki" , "Langsdorf, Mark" Cc: "Langsdorf, Mark" , lkml , ACPI Devel Maling List , Andi Kleen , Andrew Morton In-Reply-To: <200808082302.11358.rjw@sisk.pl> References: <6453C3CB8E2B3646B0D020C112613273C5AC59@sausexmb4.amd.com> <200808082302.11358.rjw@sisk.pl> Content-Type: text/plain Date: Sun, 10 Aug 2008 11:34:36 +0800 Message-Id: <1218339276.6671.43.camel@yakui_zhao.sh.intel.com> Mime-Version: 1.0 X-Mailer: Evolution 2.8.0 (2.8.0-7.fc6) Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, 2008-08-08 at 23:02 +0200, Rafael J. Wysocki wrote: > [Adding CCs] > Hi, Mark Will you please attach the output of acpidump on bug 11287? Of course it will be great if you can enable CONFIG_ACPI_DEBUG and CONFIG_CPUFREQ_DEBUG in kernel configuration and boot the system with the option of "cpufreq.debug=7 acpi.debug_layer=0x01010000 acpi.debug_level=0x17". After the system is booted, please attach the output of dmesg. Please do the above test on both kernel 2.6.27-rc1 and 2.6.27-rc2. Thanks. > On Friday, 8 of August 2008, Langsdorf, Mark wrote: > > I got a regression when updated from 2.6.27-rc1 ro > > 2.6.27-rc2. The noticeable symptom is the powernow-k8 > > driver stopped working because the call to > > acpi_processor_register_performance() is returning > > -EINVAL. > > > > Digging into the code a bit more, that's occurring > > because acpi_processor_ppc_status is not set. > > That should be set in acpi_processor_init(), but > > that function is failing to register the ACPI > > processor driver. > > > > I've dug through the code and can't see why > > that call would fail. It doesn't look like there > > were any changes between 2.6.27-rc1 and 2.6.27-rc2, > > but I may have missed something. > > > > Any advice or suggestions in debugging this > > appreciated. > > > > -Mark Langsdorf > > Operating System Research Center > > AMD > > > -- > To unsubscribe from this list: send the line "unsubscribe linux-acpi" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html