Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755720Ab2FDDJ0 (ORCPT ); Sun, 3 Jun 2012 23:09:26 -0400 Received: from mga02.intel.com ([134.134.136.20]:49323 "EHLO mga02.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755616Ab2FDDJY (ORCPT ); Sun, 3 Jun 2012 23:09:24 -0400 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="4.67,351,1309762800"; d="scan'208";a="152162707" Message-ID: <4FCC265F.5@intel.com> Date: Mon, 04 Jun 2012 11:07:11 +0800 From: ShuoX Liu Reply-To: shuox.liu@intel.com User-Agent: Mozilla/5.0 (X11; Linux i686; rv:12.0) Gecko/20120428 Thunderbird/12.0.1 MIME-Version: 1.0 To: "linux-kernel@vger.kernel.org" CC: Borislav Petkov , Yanmin Zhang , Andrew Morton , andi@firstfloor.org, Tony Luck , Ingo Molnar Subject: [PATCH v4 2/2] x86 mce: use new printk recursion disabling interface References: <4FBC444A.6060500@intel.com> <20120523100138.GA13506@x1.osrc.amd.com> <4FBDCE4A.7050900@intel.com> <20120524061145.GA18284@liondog.tnic> <20120524155611.b7aeff4d.akpm@linux-foundation.org> <1337905811.14538.206.camel@ymzhang.sh.intel.com> <4FBF3295.7090608@intel.com> <4FBF32E8.90101@intel.com> <20120525074114.GA5417@liondog.tnic> <4FC2DDFF.3020600@intel.com> <20120530090844.GA23663@liondog.tnic> <4FCC25D3.7070308@intel.com> In-Reply-To: <4FCC25D3.7070308@intel.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1297 Lines: 40 From: ShuoX Liu Disable printk recursion to make sure MCE logs printed out. Signed-off-by: Yanmin Zhang Signed-off-by: ShuoX Liu --- We hit it when running a MTBF testing on a Android atom mobile. --- arch/x86/kernel/cpu/mcheck/mce.c | 2 ++ 1 files changed, 2 insertions(+), 0 deletions(-) diff --git a/arch/x86/kernel/cpu/mcheck/mce.c b/arch/x86/kernel/cpu/mcheck/mce.c index 2afcbd2..906e838 100644 --- a/arch/x86/kernel/cpu/mcheck/mce.c +++ b/arch/x86/kernel/cpu/mcheck/mce.c @@ -306,6 +306,7 @@ static void mce_panic(char *msg, struct mce *final, char *exp) { int i, apei_err = 0; + printk_recursion_check_disable(); if (!fake_panic) { /* * Make sure only one CPU runs in machine check panic @@ -360,6 +361,7 @@ static void mce_panic(char *msg, struct mce *final, char *exp) panic(msg); } else pr_emerg(HW_ERR "Fake kernel panic: %s\n", msg); + printk_recursion_check_enable(); } /* Support code for software error injection */ -- 1.7.1 -- 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/