linux-kernel - [tip:perf/mce] x86, mce: Add a global MCE init helper

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Message-ID: <tip-b33a6363649f0ff83ec81597ea7fe7e688f973cb@git.kernel.org>
Date:	Fri, 16 Oct 2009 12:55:50 GMT
From:	tip-bot for Borislav Petkov <borislav.petkov@....com>
To:	linux-tip-commits@...r.kernel.org
Cc:	linux-kernel@...r.kernel.org, hpa@...or.com, mingo@...hat.com,
	andi@...stfloor.org, tglx@...utronix.de, mingo@...e.hu,
	borislav.petkov@....com
Subject: [tip:perf/mce] x86, mce: Add a global MCE init helper

Commit-ID:  b33a6363649f0ff83ec81597ea7fe7e688f973cb
Gitweb:     http://git.kernel.org/tip/b33a6363649f0ff83ec81597ea7fe7e688f973cb
Author:     Borislav Petkov <borislav.petkov@....com>
AuthorDate: Fri, 16 Oct 2009 12:31:33 +0200
Committer:  Ingo Molnar <mingo@...e.hu>
CommitDate: Fri, 16 Oct 2009 14:46:50 +0200

x86, mce: Add a global MCE init helper

Add an early initcall (pre SMP) which sets up global MCE
functionality.

Signed-off-by: Borislav Petkov <borislav.petkov@....com>
Cc: Andi Kleen <andi@...stfloor.org>
LKML-Reference: <1255689093-26921-2-git-send-email-borislav.petkov@....com>
Signed-off-by: Ingo Molnar <mingo@...e.hu>
---
 arch/x86/kernel/cpu/mcheck/mce.c |   10 ++++++++--
 1 files changed, 8 insertions(+), 2 deletions(-)

diff --git a/arch/x86/kernel/cpu/mcheck/mce.c b/arch/x86/kernel/cpu/mcheck/mce.c
index 68d968e..8080170 100644
--- a/arch/x86/kernel/cpu/mcheck/mce.c
+++ b/arch/x86/kernel/cpu/mcheck/mce.c
@@ -1436,8 +1436,6 @@ void __cpuinit mcheck_cpu_init(struct cpuinfo_x86 *c)
 	__mcheck_cpu_init_timer();
 	INIT_WORK(&__get_cpu_var(mce_work), mce_process_work);
 
-	if (raw_smp_processor_id() == 0)
-		atomic_notifier_chain_register(&x86_mce_decoder_chain, &mce_dec_nb);
 }
 
 /*
@@ -1657,6 +1655,14 @@ static int __init mcheck_enable(char *str)
 }
 __setup("mce", mcheck_enable);
 
+static int __init mcheck_init(void)
+{
+	atomic_notifier_chain_register(&x86_mce_decoder_chain, &mce_dec_nb);
+
+	return 0;
+}
+early_initcall(mcheck_init);
+
 /*
  * Sysfs support
  */
--
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