From: Andi Kleen <andi@firstfloor.org>
Date: Thu, 12 Feb 2009 12:39:28 +0000 (+0100)
Subject: x86, mce: always use separate work queue to run trigger
X-Git-Tag: v2.6.30-rc1~2^2~50^2~5^2~25
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=9bd984058088d6ef7af6946591a207e51a2f4890;p=pandora-kernel.git

x86, mce: always use separate work queue to run trigger

Impact: Needed for bug fix in next patch

This relaxes the requirement that mce_notify_user has to run in process
context. Useful for future changes, but also leads to cleaner
behaviour now. Now instead mce_notify_user can be called directly
from interrupt (but not NMI) context.

The work queue only uses a single global work struct, which can be done safely
because it is always free to reuse before the trigger function is executed.
This way no events can be lost.

Signed-off-by: Andi Kleen <ak@linux.intel.com>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
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