Commit-ID: 18c01f8abff51e4910cc5ffb4b710e8c6eea60c9 Gitweb: http://git.kernel.org/tip/18c01f8abff51e4910cc5ffb4b710e8c6eea60c9 Author: Peter Zijlstra <a.p.zijlstra@xxxxxxxxx> AuthorDate: Wed, 27 Jan 2010 23:07:49 +0100 Committer: Ingo Molnar <mingo@xxxxxxx> CommitDate: Fri, 29 Jan 2010 09:01:49 +0100 perf_events, x86: Remove spurious counter reset from x86_pmu_enable() At enable time the counter might still have a ->idx pointing to a previously occupied location that might now be taken by another event. Resetting the counter at that location with data from this event will destroy the other counter's count. Signed-off-by: Peter Zijlstra <a.p.zijlstra@xxxxxxxxx> Cc: Stephane Eranian <eranian@xxxxxxxxxx> LKML-Reference: <20100127221122.261477183@xxxxxxxxx> Signed-off-by: Ingo Molnar <mingo@xxxxxxx> --- arch/x86/kernel/cpu/perf_event.c | 3 --- 1 files changed, 0 insertions(+), 3 deletions(-) diff --git a/arch/x86/kernel/cpu/perf_event.c b/arch/x86/kernel/cpu/perf_event.c index 3fac0bf..518eb3e 100644 --- a/arch/x86/kernel/cpu/perf_event.c +++ b/arch/x86/kernel/cpu/perf_event.c @@ -1762,9 +1762,6 @@ static int x86_pmu_enable(struct perf_event *event) cpuc->n_events = n; cpuc->n_added = n - n0; - if (hwc->idx != -1) - x86_perf_event_set_period(event, hwc, hwc->idx); - return 0; } -- 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
|