alpha/kernel/perf_event.c

253 				struct hw_perf_event *hwc, int idx)
255 	long left = local64_read(&hwc->period_left);
256 	long period = hwc->sample_period;
261 		local64_set(&hwc->period_left, left);
262 		hwc->last_period = period;
268 		local64_set(&hwc->period_left, left);
269 		hwc->last_period = period;
283 	local64_set(&hwc->prev_count, (unsigned long)(-left));
308 					struct hw_perf_event *hwc, int idx, long ovf)
314 	prev_raw_count = local64_read(&hwc->prev_count);
317 	if (local64_cmpxchg(&hwc->prev_count, prev_raw_count,
331 	local64_sub(delta, &hwc->period_left);
413 		struct hw_perf_event *hwc = &pe->hw;
414 		int idx = hwc->idx;
417 			alpha_perf_event_set_period(pe, hwc, idx);
421 		if (!(hwc->state & PERF_HES_STOPPED))
436 	struct hw_perf_event *hwc = &event->hw;
469 	hwc->state = PERF_HES_UPTODATE;
471 		hwc->state |= PERF_HES_STOPPED;
488 	struct hw_perf_event *hwc = &event->hw;
510 			alpha_perf_event_update(event, hwc, idx, 0);
526 	struct hw_perf_event *hwc = &event->hw;
528 	alpha_perf_event_update(event, hwc, hwc->idx, 0);
534 	struct hw_perf_event *hwc = &event->hw;
537 	if (!(hwc->state & PERF_HES_STOPPED)) {
538 		cpuc->idx_mask &= ~(1UL<<hwc->idx);
539 		hwc->state |= PERF_HES_STOPPED;
542 	if ((flags & PERF_EF_UPDATE) && !(hwc->state & PERF_HES_UPTODATE)) {
543 		alpha_perf_event_update(event, hwc, hwc->idx, 0);
544 		hwc->state |= PERF_HES_UPTODATE;
548 		wrperfmon(PERFMON_CMD_DISABLE, (1UL<<hwc->idx));
554 	struct hw_perf_event *hwc = &event->hw;
557 	if (WARN_ON_ONCE(!(hwc->state & PERF_HES_STOPPED)))
561 		WARN_ON_ONCE(!(hwc->state & PERF_HES_UPTODATE));
562 		alpha_perf_event_set_period(event, hwc, hwc->idx);
565 	hwc->state = 0;
567 	cpuc->idx_mask |= 1UL<<hwc->idx;
569 		wrperfmon(PERFMON_CMD_ENABLE, (1UL<<hwc->idx));
605 	struct hw_perf_event *hwc = &event->hw;
642 	hwc->event_base = ev;
656 	evtypes[n] = hwc->event_base;
663 	hwc->config_base = 0;
664 	hwc->idx = PMC_NO_INDEX;
678 	if (!hwc->sample_period) {
679 		hwc->sample_period = alpha_pmu->pmc_max_period[0];
680 		hwc->last_period = hwc->sample_period;
681 		local64_set(&hwc->period_left, hwc->sample_period);
806 	struct hw_perf_event *hwc;
851 	hwc = &event->hw;
852 	alpha_perf_event_update(event, hwc, idx, alpha_pmu->pmc_max_period[idx]+1);
853 	perf_sample_data_init(&data, 0, hwc->last_period);
855 	if (alpha_perf_event_set_period(event, hwc, idx)) {