commit c93dc84cbe32435be3ffa2fbde355eff94955c32
author Peter Zijlstra <a.p.zijlstra@chello.nl> Fri Jun 08 14:50:50 2012 +0200
committer Ingo Molnar <mingo@kernel.org> Thu Jul 05 21:55:57 2012 +0200
tree b650cfcea486aa0dd1612f187156c7b84fb97661
parent f285f92f7e4c9af20149130c8fd5027131b39b0e

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>