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Subject[tip:perf/core] perf, x86: P4 PMU -- fix typo in unflagged NMI handling
Commit-ID:  ef4f30f54e265c2f6f9ac9eda4db158a4e16050b
Gitweb: http://git.kernel.org/tip/ef4f30f54e265c2f6f9ac9eda4db158a4e16050b
Author: Cyrill Gorcunov <gorcunov@openvz.org>
AuthorDate: Tue, 18 May 2010 17:29:14 +0800
Committer: Ingo Molnar <mingo@elte.hu>
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@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 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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