events: Don't divide events if it has field period

[mv-sheeva.git] / kernel / events / core.c

diff --git a/kernel/events/core.c b/kernel/events/core.c
index eadac69265fc60619c1317425a07d9394013133a..8d9dea56c262bbe91494f5600b95fe10a01068c9 100644 (file)
--- a/kernel/events/core.c
+++ b/kernel/events/core.c
@@ -4528,7 +4528,6 @@ static void perf_swevent_overflow(struct perf_event *event, u64 overflow,
        struct hw_perf_event *hwc = &event->hw;
        int throttle = 0;
 
-       data->period = event->hw.last_period;
        if (!overflow)
                overflow = perf_swevent_set_period(event);
 
@@ -4562,6 +4561,12 @@ static void perf_swevent_event(struct perf_event *event, u64 nr,
        if (!is_sampling_event(event))
                return;
 
+       if ((event->attr.sample_type & PERF_SAMPLE_PERIOD) && !event->attr.freq) {
+               data->period = nr;
+               return perf_swevent_overflow(event, 1, data, regs);
+       } else
+               data->period = event->hw.last_period;
+
        if (nr == 1 && hwc->sample_period == 1 && !event->attr.freq)
                return perf_swevent_overflow(event, 1, data, regs);