From ef4f30f54e265c2f6f9ac9eda4db158a4e16050b Mon Sep 17 00:00:00 2001
From: Cyrill Gorcunov <gorcunov@openvz.org>
Date: Tue, 18 May 2010 17:29:14 +0800
Subject: [PATCH] perf, x86: P4 PMU -- fix typo in unflagged NMI handling
Tested-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>
Cc: Cyrill Gorcunov <gorcunov@gmail.com>
LKML-Reference: <1274174954.22793.17.camel@minggr.sh.intel.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
---
arch/x86/kernel/cpu/perf_event_p4.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/x86/kernel/cpu/perf_event_p4.c b/arch/x86/kernel/cpu/perf_event_p4.c
index 02f072830237..87e1803e67a6 100644
--- a/arch/x86/kernel/cpu/perf_event_p4.c
+++ b/arch/x86/kernel/cpu/perf_event_p4.c
@@ -473,7 +473,7 @@ static inline int p4_pmu_clear_cccr_ovf(struct hw_perf_event *hwc)
rdmsr(hwc->config_base + hwc->idx, low, high);
/* we need to check high bit for unflagged overflows */
- if ((low & P4_CCCR_OVF) || (high & (1 << 31))) {
+ if ((low & P4_CCCR_OVF) || !(high & (1 << 31))) {
overflow = 1;
(void)checking_wrmsrl(hwc->config_base + hwc->idx,
((u64)low) & ~P4_CCCR_OVF);