From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1761357AbZEZX7j (ORCPT ); Tue, 26 May 2009 19:59:39 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1756540AbZEZXy6 (ORCPT ); Tue, 26 May 2009 19:54:58 -0400 Received: from one.firstfloor.org ([213.235.205.2]:38615 "EHLO one.firstfloor.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754884AbZEZXyu (ORCPT ); Tue, 26 May 2009 19:54:50 -0400 From: Andi Kleen To: linux-kernel@vger.kernel.org, hpa@zytor.com, x86@kernel.org Cc: Andi Kleen , seto.hidetoshi@jp.fujitsu.com Subject: [PATCH 20/31] x86: MCE: Improve documentation Date: Wed, 27 May 2009 01:54:22 +0200 Message-Id: <314f7c278aaaa41854bf4f0837a4ca6126160fc8.1243381848.git.ak@linux.intel.com> X-Mailer: git-send-email 1.6.0.2 In-Reply-To: <0f7e10122c48b7988b1676be5e7fc75f2c561215.1243381848.git.ak@linux.intel.com> References: <1243382073-29338-1-git-send-email-andi@firstfloor.org> <6c6d1f8bbbd2312884dca5a5c75aa5f5a87dae4b.1243381848.git.ak@linux.intel.com> <1623cd9a1c77d35fc2044d72c4bfa1246e67a1c0.1243381848.git.ak@linux.intel.com> <723b3fe4e35063b123cee9658c24267287eeac07.1243381848.git.ak@linux.intel.com> <0301db6d6dabb8bcfaffe76a907a5036646c207d.1243381848.git.ak@linux.intel.com> <23417423c34ad949f53ebc947af8d18672a79a40.1243381848.git.ak@linux.intel.com> <347567c2ace55b336b1a43a67323ff8b86b80243.1243381848.git.ak@linux.intel.com> <3e29698799ad2c02429613323897a6e61a0a7d01.1243381848.git.ak@linux.intel.com> <34082fc262bae2f910f1a940622173445aea72cd.1243381848.git.ak@linux.intel.com> <37501061dc5d5581fefcaff92c2606e39cc61913.1243381848.git.ak@linux.intel.com> <10e478c24139e29e7e74529edd694858ec2fb7ea.1243381848.git.ak@linux.intel.com> <7efad2e5492abb8f94577a81c2ca397a968064d7.1243381848.git.ak@linux.intel.com> <0f7e10122c48b7988b1676be5e7fc75f2c561215.1243381848.git.ak@linux.intel.com> In-Reply-To: References: Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Andi Kleen Document that check_interval set to 0 means no polling. Noticed by Hidetoshi Seto Also add a reference from boot options to the sysfs tunables Cc: seto.hidetoshi@jp.fujitsu.com Acked-by: Hidetoshi Seto Signed-off-by: Andi Kleen --- Documentation/x86/x86_64/boot-options.txt | 2 ++ Documentation/x86/x86_64/machinecheck | 4 +++- 2 files changed, 5 insertions(+), 1 deletions(-) diff --git a/Documentation/x86/x86_64/boot-options.txt b/Documentation/x86/x86_64/boot-options.txt index e97ebe4..9fb1f4f 100644 --- a/Documentation/x86/x86_64/boot-options.txt +++ b/Documentation/x86/x86_64/boot-options.txt @@ -5,6 +5,8 @@ only the AMD64 specific ones are listed here. Machine check + Please see Documentation/x86/x86_64/machinecheck for sysfs runtime tunables. + mce=off disable machine check mce=bootlog Enable logging of machine checks left over from booting. Disabled by default on AMD because some BIOS leave bogus ones. diff --git a/Documentation/x86/x86_64/machinecheck b/Documentation/x86/x86_64/machinecheck index bec2af3..b1fb302 100644 --- a/Documentation/x86/x86_64/machinecheck +++ b/Documentation/x86/x86_64/machinecheck @@ -41,7 +41,9 @@ check_interval the polling interval. When the poller stops finding MCEs, it triggers an exponential backoff (poll less often) on the polling interval. The check_interval variable is both the initial and - maximum polling interval. + maximum polling interval. 0 means no polling for corrected machine + check errors (but some corrected errors might be still reported + in other ways) tolerant Tolerance level. When a machine check exception occurs for a non -- 1.6.0.2