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authorLinus Torvalds <torvalds@linux-foundation.org>2011-03-25 17:53:09 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2011-03-25 17:53:09 -0700
commit2a20b02c055a14eb60ac8da737d79dc940bb9ee0 (patch)
tree1cf09a5e13f8ed24bc66386c153969ad49f8f098 /arch/x86/kernel/cpu/perf_event_p4.c
parent839767e79e7bdf06f241a47701f0f64b8e2d3f61 (diff)
parent45daae575e08bbf7405c5a3633e956fa364d1b4f (diff)
downloadblackbird-op-linux-2a20b02c055a14eb60ac8da737d79dc940bb9ee0.tar.gz
blackbird-op-linux-2a20b02c055a14eb60ac8da737d79dc940bb9ee0.zip
Merge branch 'perf-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'perf-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: perf, x86: Complain louder about BIOSen corrupting CPU/PMU state and continue perf, x86: P4 PMU - Read proper MSR register to catch unflagged overflows perf symbols: Look at .dynsym again if .symtab not found perf build-id: Add quirk to deal with perf.data file format breakage perf session: Pass evsel in event_ops->sample() perf: Better fit max unprivileged mlock pages for tools needs perf_events: Fix stale ->cgrp pointer in update_cgrp_time_from_cpuctx() perf top: Fix uninitialized 'counter' variable tracing: Fix set_ftrace_filter probe function display perf, x86: Fix Intel fixed counters base initialization
Diffstat (limited to 'arch/x86/kernel/cpu/perf_event_p4.c')
-rw-r--r--arch/x86/kernel/cpu/perf_event_p4.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/x86/kernel/cpu/perf_event_p4.c b/arch/x86/kernel/cpu/perf_event_p4.c
index 0811f5ebfba6..c2520e178d32 100644
--- a/arch/x86/kernel/cpu/perf_event_p4.c
+++ b/arch/x86/kernel/cpu/perf_event_p4.c
@@ -777,6 +777,7 @@ static inline int p4_pmu_clear_cccr_ovf(struct hw_perf_event *hwc)
* the counter has reached zero value and continued counting before
* real NMI signal was received:
*/
+ rdmsrl(hwc->event_base, v);
if (!(v & ARCH_P4_UNFLAGGED_BIT))
return 1;
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