linux-kernel - [051/205] perf_events: Fix Intel Westmere event constraints

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Date:	Fri, 30 Jul 2010 10:51:08 -0700
From:	Greg KH <gregkh@...e.de>
To:	linux-kernel@...r.kernel.org, stable@...nel.org
Cc:	stable-review@...nel.org, torvalds@...ux-foundation.org,
	akpm@...ux-foundation.org, alan@...rguk.ukuu.org.uk,
	Stephane Eranian <eranian@...gle.com>, peterz@...radead.org,
	paulus@...ba.org, davem@...emloft.net, fweisbec@...il.com,
	perfmon2-devel@...ts.sf.net, eranian@...il.com,
	Ingo Molnar <mingo@...e.hu>
Subject: [051/205] perf_events: Fix Intel Westmere event constraints

2.6.34-stable review patch.  If anyone has any objections, please let us know.

------------------

From: Stephane Eranian <eranian@...gle.com>

commit d11007703c31db534674ebeeb9eb047bbbe758bd upstream.

Based on Intel Vol3b (March 2010), the event
SNOOPQ_REQUEST_OUTSTANDING is restricted to counters 0,1 so
update the event table for Intel Westmere accordingly.

Signed-off-by: Stephane Eranian <eranian@...gle.com>
Cc: peterz@...radead.org
Cc: paulus@...ba.org
Cc: davem@...emloft.net
Cc: fweisbec@...il.com
Cc: perfmon2-devel@...ts.sf.net
Cc: eranian@...il.com
LKML-Reference: <4c10cb56.5120e30a.2eb4.ffffc3de@...google.com>
Signed-off-by: Ingo Molnar <mingo@...e.hu>
Signed-off-by: Greg Kroah-Hartman <gregkh@...e.de>

---
 arch/x86/kernel/cpu/perf_event_intel.c |    1 +
 1 file changed, 1 insertion(+)

--- a/arch/x86/kernel/cpu/perf_event_intel.c
+++ b/arch/x86/kernel/cpu/perf_event_intel.c
@@ -72,6 +72,7 @@ static struct event_constraint intel_wes
 	INTEL_EVENT_CONSTRAINT(0x51, 0x3), /* L1D */
 	INTEL_EVENT_CONSTRAINT(0x60, 0x1), /* OFFCORE_REQUESTS_OUTSTANDING */
 	INTEL_EVENT_CONSTRAINT(0x63, 0x3), /* CACHE_LOCK_CYCLES */
+	INTEL_EVENT_CONSTRAINT(0xb3, 0x1), /* SNOOPQ_REQUEST_OUTSTANDING */
 	EVENT_CONSTRAINT_END
 };
 


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