Commit-ID: 60f916dee612130c9977a8edd4abee98334202ba
Gitweb: http://git.kernel.org/tip/60f916dee612130c9977a8edd4abee98334202ba
Author: Peter Zijlstra <a.p.zijlstra@xxxxxxxxx>
AuthorDate: Mon, 15 Jun 2009 19:00:20 +0200
Committer: Ingo Molnar <mingo@xxxxxxx>
CommitDate: Wed, 17 Jun 2009 19:23:52 +0200
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@xxxxxxxxx>
Cc: Mike Galbraith <efault@xxxxxx>
Cc: Paul Mackerras <paulus@xxxxxxxxx>
Cc: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
LKML-Reference: <new-submission>
Signed-off-by: Ingo Molnar <mingo@xxxxxxx>
---
arch/x86/kernel/cpu/perf_counter.c | 2 ++
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 e8c68a5..ce1ae3f 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);
}
--
To unsubscribe from this list: send the line "unsubscribe linux-tip-commits" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
|