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authorPeter Zijlstra <a.p.zijlstra@chello.nl>2009-06-15 19:00:20 +0200
committerIngo Molnar <mingo@elte.hu>2009-06-17 19:23:52 +0200
commit60f916dee612130c9977a8edd4abee98334202ba (patch)
tree7de1a620cd1067fd46a06d23621afe3482b5a06e
parent6e7d6fdcbeefa9434653b5e5da12909636ea1d52 (diff)
perf_counter: x86: Set the period in the intel overflow handler
Commit 9e350de37ac960 ("perf_counter: Accurate period data") missed a spot, which caused all Intel-PMU samples to have a period of 0. This broke auto-freq sampling. Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> LKML-Reference: <new-submission> Signed-off-by: Ingo Molnar <mingo@elte.hu>
-rw-r--r--arch/x86/kernel/cpu/perf_counter.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/x86/kernel/cpu/perf_counter.c b/arch/x86/kernel/cpu/perf_counter.c
index e8c68a5091d..ce1ae3f1f86 100644
--- a/arch/x86/kernel/cpu/perf_counter.c
+++ b/arch/x86/kernel/cpu/perf_counter.c
@@ -1224,6 +1224,8 @@ again:
if (!intel_pmu_save_and_restart(counter))
continue;
+ data.period = counter->hw.last_period;
+
if (perf_counter_overflow(counter, 1, &data))
intel_pmu_disable_counter(&counter->hw, bit);
}