Commit-ID: 6667661df4bc76083edf1e08831c20f64429709d Gitweb: http://git.kernel.org/tip/6667661df4bc76083edf1e08831c20f64429709d Author: Peter Zijlstra <a.p.zijlstra@xxxxxxxxx> AuthorDate: Wed, 10 Feb 2010 16:10:48 +0100 Committer: Ingo Molnar <mingo@xxxxxxx> CommitDate: Fri, 26 Feb 2010 10:56:54 +0100 perf_events, x86: Remove superflous MSR writes We re-program the event control register every time we reset the count, this appears to be superflous, hence remove it. Signed-off-by: Peter Zijlstra <a.p.zijlstra@xxxxxxxxx> Cc: Arjan van de Ven <arjan@xxxxxxxxxxxxxxx> LKML-Reference: <new-submission> 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 ad09656..dd09ccc 100644 --- a/arch/x86/kernel/cpu/perf_event.c +++ b/arch/x86/kernel/cpu/perf_event.c @@ -2009,9 +2009,6 @@ static int intel_pmu_save_and_restart(struct perf_event *event) x86_perf_event_update(event, hwc, idx); ret = x86_perf_event_set_period(event, hwc, idx); - if (event->state == PERF_EVENT_STATE_ACTIVE) - intel_pmu_enable_event(hwc, idx); - return ret; } -- 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
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