perf: Shrink hw_perf_event
Use hw_perf_event::period_left instead of hw_perf_event::remaining and win back 8 bytes. Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: paulus <paulus@samba.org> Cc: Frederic Weisbecker <fweisbec@gmail.com> LKML-Reference: <new-submission> Signed-off-by: Ingo Molnar <mingo@elte.hu>
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@ -529,7 +529,6 @@ struct hw_perf_event {
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int last_cpu;
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};
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struct { /* software */
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s64 remaining;
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struct hrtimer hrtimer;
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};
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#ifdef CONFIG_HAVE_HW_BREAKPOINT
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@ -4800,14 +4800,13 @@ static void perf_swevent_start_hrtimer(struct perf_event *event)
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hrtimer_init(&hwc->hrtimer, CLOCK_MONOTONIC, HRTIMER_MODE_REL);
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hwc->hrtimer.function = perf_swevent_hrtimer;
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if (hwc->sample_period) {
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u64 period;
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s64 period = local64_read(&hwc->period_left);
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if (hwc->remaining) {
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if (hwc->remaining < 0)
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if (period) {
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if (period < 0)
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period = 10000;
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else
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period = hwc->remaining;
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hwc->remaining = 0;
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local64_set(&hwc->period_left, 0);
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} else {
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period = max_t(u64, 10000, hwc->sample_period);
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}
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@ -4823,7 +4822,7 @@ static void perf_swevent_cancel_hrtimer(struct perf_event *event)
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if (hwc->sample_period) {
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ktime_t remaining = hrtimer_get_remaining(&hwc->hrtimer);
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hwc->remaining = ktime_to_ns(remaining);
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local64_set(&hwc->period_left, ktime_to_ns(remaining));
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hrtimer_cancel(&hwc->hrtimer);
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}
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