[tip:perf/core] perf, x86: P4 PMU -- fix typo in unflagged NMI handling

[tip-bot for Cyrill Gorcunov]

Commit-ID:  ef4f30f54e265c2f6f9ac9eda4db158a4e16050b
Gitweb:     http://git.kernel.org/tip/ef4f30f54e265c2f6f9ac9eda4db158a4e16050b
Author:     Cyrill Gorcunov <gorcunov@xxxxxxxxxx>
AuthorDate: Tue, 18 May 2010 17:29:14 +0800
Committer:  Ingo Molnar <mingo@xxxxxxx>
CommitDate: Tue, 18 May 2010 12:05:20 +0200

perf, x86: P4 PMU -- fix typo in unflagged NMI handling

Tested-by: Lin Ming <ming.m.lin@xxxxxxxxx>
Signed-off-by: Cyrill Gorcunov <gorcunov@xxxxxxxxxx>
Cc: Cyrill Gorcunov <gorcunov@xxxxxxxxx>
LKML-Reference: <1274174954.22793.17.camel@xxxxxxxxxxxxxxxxxxx>
Signed-off-by: Ingo Molnar <mingo@xxxxxxx>
---
 arch/x86/kernel/cpu/perf_event_p4.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/arch/x86/kernel/cpu/perf_event_p4.c b/arch/x86/kernel/cpu/perf_event_p4.c
index 02f0728..87e1803 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);
--
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