linux-kernel - [PATCH] perf/x86: Fix event constraint for SandyBridge-EP C-Box

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Message-Id: <1340866596-22502-2-git-send-email-zheng.z.yan@intel.com>
Date:	Thu, 28 Jun 2012 14:56:36 +0800
From:	"Yan, Zheng" <zheng.z.yan@...el.com>
To:	a.p.zijlstra@...llo.nl, eranian@...gle.com, mingo@...e.hu,
	andi@...stfloor.org, linux-kernel@...r.kernel.org
Cc:	"Yan, Zheng" <zheng.z.yan@...el.com>
Subject: [PATCH] perf/x86: Fix event constraint for SandyBridge-EP C-Box

From: "Yan, Zheng" <zheng.z.yan@...el.com>

The constraint for C-Box event 0x1f should have overlap flag set.

Signed-off-by: Yan, Zheng <zheng.z.yan@...el.com>
---
 arch/x86/kernel/cpu/perf_event_intel_uncore.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/x86/kernel/cpu/perf_event_intel_uncore.c b/arch/x86/kernel/cpu/perf_event_intel_uncore.c
index e15344d..29d0f43 100644
--- a/arch/x86/kernel/cpu/perf_event_intel_uncore.c
+++ b/arch/x86/kernel/cpu/perf_event_intel_uncore.c
@@ -348,7 +348,7 @@ static struct event_constraint snbep_uncore_cbox_constraints[] = {
 	UNCORE_EVENT_CONSTRAINT(0x1c, 0xc),
 	UNCORE_EVENT_CONSTRAINT(0x1d, 0xc),
 	UNCORE_EVENT_CONSTRAINT(0x1e, 0xc),
-	UNCORE_EVENT_CONSTRAINT(0x1f, 0xe),
+	EVENT_CONSTRAINT_OVERLAP(0x1f, 0xe, 0xff),
 	UNCORE_EVENT_CONSTRAINT(0x21, 0x3),
 	UNCORE_EVENT_CONSTRAINT(0x23, 0x3),
 	UNCORE_EVENT_CONSTRAINT(0x31, 0x3),
-- 
1.7.10.2

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