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perf_counter: x86: Set the period in the intel overflow handler 

Commit 9e350de37a ("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>
This commit is contained in:
Peter Zijlstra 2009-06-15 19:00:20 +02:00 committed by Ingo Molnar
parent 6e7d6fdcbe
commit 60f916dee6
1 changed files with 2 additions and 0 deletions
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2
arch/x86/kernel/cpu/perf_counter.c
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@ -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);
}