Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753087Ab2E1C5q (ORCPT ); Sun, 27 May 2012 22:57:46 -0400 Received: from mga11.intel.com ([192.55.52.93]:36293 "EHLO mga11.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751930Ab2E1C5p (ORCPT ); Sun, 27 May 2012 22:57:45 -0400 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="4.71,315,1320652800"; d="scan'208";a="157794325" Message-ID: <4FC2E944.6060903@intel.com> Date: Mon, 28 May 2012 10:56:04 +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: Yanmin Zhang , "Luck, Tony" , Andrew Morton , Borislav Petkov , "andi@firstfloor.org" , Ingo Molnar Subject: [PATCH v3 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> <3908561D78D1C84285E8C5FCA982C28F192F4D39@ORSMSX104.amr.corp.intel.com> <1338165058.14538.209.camel@ymzhang.sh.intel.com> <4FC2E8CF.2040109@intel.com> In-Reply-To: <4FC2E8CF.2040109@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: 1246 Lines: 38 From: ShuoX Liu Disable printk recursion to make sure MCE logs printed out. Signed-off-by: Yanmin Zhang Signed-off-by: ShuoX Liu --- 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..365c35d 100644 --- a/arch/x86/kernel/cpu/mcheck/mce.c +++ b/arch/x86/kernel/cpu/mcheck/mce.c @@ -1015,6 +1015,7 @@ void do_machine_check(struct pt_regs *regs, long error_code) DECLARE_BITMAP(toclear, MAX_NR_BANKS); char *msg = "Unknown"; + printk_recursion_check_disable(); atomic_inc(&mce_entry); this_cpu_inc(mce_exception_count); @@ -1144,6 +1145,7 @@ void do_machine_check(struct pt_regs *regs, long error_code) mce_wrmsrl(MSR_IA32_MCG_STATUS, 0); out: atomic_dec(&mce_entry); + printk_recursion_check_enable(); sync_core(); } EXPORT_SYMBOL_GPL(do_machine_check); -- 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/