2935 	s64 period, sample_period;  in perf_adjust_period()  local
2940 	delta = (s64)(period - hwc->sample_period);  in perf_adjust_period()
2943 	sample_period = hwc->sample_period + delta;  in perf_adjust_period()
2945 	if (!sample_period)  in perf_adjust_period()
2946 		sample_period = 1;  in perf_adjust_period()
2948 	hwc->sample_period = sample_period;  in perf_adjust_period()
2950 	if (local64_read(&hwc->period_left) > 8*sample_period) {  in perf_adjust_period()
3996 		event->attr.sample_period = value;  in __perf_event_period()
3997 		event->hw.sample_period = value;  in __perf_event_period()
6202 	hwc->last_period = hwc->sample_period;  in perf_swevent_set_period()
6264 	if (nr == 1 && hwc->sample_period == 1 && !event->attr.freq)  in perf_swevent_event()
6434 		hwc->last_period = hwc->sample_period;  in perf_swevent_add()
6879 	period = max_t(u64, 10000, event->hw.sample_period);  in perf_swevent_hrtimer()
6900 		period = max_t(u64, 10000, hwc->sample_period);  in perf_swevent_start_hrtimer()
6936 		event->attr.sample_period = NSEC_PER_SEC / freq;  in perf_swevent_init_hrtimer()
6937 		hwc->sample_period = event->attr.sample_period;  in perf_swevent_init_hrtimer()
6938 		local64_set(&hwc->period_left, hwc->sample_period);  in perf_swevent_init_hrtimer()
6939 		hwc->last_period = hwc->sample_period;  in perf_swevent_init_hrtimer()
7602 	hwc->sample_period = attr->sample_period;  in perf_event_alloc()
7604 		hwc->sample_period = 1;  in perf_event_alloc()
7605 	hwc->last_period = hwc->sample_period;  in perf_event_alloc()
7607 	local64_set(&hwc->period_left, hwc->sample_period);  in perf_event_alloc()
7946 		if (attr.sample_period & (1ULL << 63))  in SYSCALL_DEFINE5()
8655 		u64 sample_period = parent_event->hw.sample_period;  in inherit_event()  local
8658 		hwc->sample_period = sample_period;  in inherit_event()
8659 		hwc->last_period   = sample_period;  in inherit_event()
8661 		local64_set(&hwc->period_left, sample_period);  in inherit_event()