4067 	s64 period, sample_period;  in perf_adjust_period()  local
4072 	delta = (s64)(period - hwc->sample_period);  in perf_adjust_period()
4075 	sample_period = hwc->sample_period + delta;  in perf_adjust_period()
4077 	if (!sample_period)  in perf_adjust_period()
4078 		sample_period = 1;  in perf_adjust_period()
4080 	hwc->sample_period = sample_period;  in perf_adjust_period()
4082 	if (local64_read(&hwc->period_left) > 8*sample_period) {  in perf_adjust_period()
5604 		event->attr.sample_period = value;  in __perf_event_period()
5605 		event->hw.sample_period = value;  in __perf_event_period()
9455 	hwc->last_period = hwc->sample_period;  in perf_swevent_set_period()
9517 	if (nr == 1 && hwc->sample_period == 1 && !event->attr.freq)  in perf_swevent_event()
9687 		hwc->last_period = hwc->sample_period;  in perf_swevent_add()
10821 	period = max_t(u64, 10000, event->hw.sample_period);  in perf_swevent_hrtimer()
10842 		period = max_t(u64, 10000, hwc->sample_period);  in perf_swevent_start_hrtimer()
10877 		event->attr.sample_period = NSEC_PER_SEC / freq;  in perf_swevent_init_hrtimer()
10878 		hwc->sample_period = event->attr.sample_period;  in perf_swevent_init_hrtimer()
10879 		local64_set(&hwc->period_left, hwc->sample_period);  in perf_swevent_init_hrtimer()
10880 		hwc->last_period = hwc->sample_period;  in perf_swevent_init_hrtimer()
11822 	hwc->sample_period = attr->sample_period;  in perf_event_alloc()
11824 		hwc->sample_period = 1;  in perf_event_alloc()
11825 	hwc->last_period = hwc->sample_period;  in perf_event_alloc()
11827 	local64_set(&hwc->period_left, hwc->sample_period);  in perf_event_alloc()
12313 		if (attr.sample_period & (1ULL << 63))  in SYSCALL_DEFINE5()
13245 		u64 sample_period = parent_event->hw.sample_period;  in inherit_event()  local
13248 		hwc->sample_period = sample_period;  in inherit_event()
13249 		hwc->last_period   = sample_period;  in inherit_event()
13251 		local64_set(&hwc->period_left, sample_period);  in inherit_event()