From: Peter Zijlstra <a.p.zijlstra@chello.nl>
Date: Fri, 8 Jun 2012 12:50:50 +0000 (+0200)
Subject: perf/x86: Add a microcode revision check for SNB-PEBS
X-Git-Tag: v3.6-rc1~167^2~13
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=c93dc84cbe32435be3ffa2fbde355eff94955c32;p=pandora-kernel.git

perf/x86: Add a microcode revision check for SNB-PEBS

Recent Intel microcode resolved the SNB-PEBS issues, so conditionally
enable PEBS on SNB hardware depending on the microcode revision.

Thanks to Stephane for figuring out the various microcode revisions.

Suggested-by: Stephane Eranian <eranian@google.com>
Acked-by: Borislav Petkov <borislav.petkov@amd.com>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/n/tip-v3672ziwh9damwqwh1uz3krm@git.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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