2963 	s64 period, sample_period;  in perf_adjust_period()  local
2968 	delta = (s64)(period - hwc->sample_period);  in perf_adjust_period()
2971 	sample_period = hwc->sample_period + delta;  in perf_adjust_period()
2973 	if (!sample_period)  in perf_adjust_period()
2974 		sample_period = 1;  in perf_adjust_period()
2976 	hwc->sample_period = sample_period;  in perf_adjust_period()
2978 	if (local64_read(&hwc->period_left) > 8*sample_period) {  in perf_adjust_period()
4155 		event->attr.sample_period = value;  in __perf_event_period()
4156 		event->hw.sample_period = value;  in __perf_event_period()
4217 		event->attr.sample_period = value;  in perf_event_period()
4218 		event->hw.sample_period = value;  in perf_event_period()
6500 	hwc->last_period = hwc->sample_period;  in perf_swevent_set_period()
6562 	if (nr == 1 && hwc->sample_period == 1 && !event->attr.freq)  in perf_swevent_event()
6732 		hwc->last_period = hwc->sample_period;  in perf_swevent_add()
7174 	period = max_t(u64, 10000, event->hw.sample_period);  in perf_swevent_hrtimer()
7195 		period = max_t(u64, 10000, hwc->sample_period);  in perf_swevent_start_hrtimer()
7230 		event->attr.sample_period = NSEC_PER_SEC / freq;  in perf_swevent_init_hrtimer()
7231 		hwc->sample_period = event->attr.sample_period;  in perf_swevent_init_hrtimer()
7232 		local64_set(&hwc->period_left, hwc->sample_period);  in perf_swevent_init_hrtimer()
7233 		hwc->last_period = hwc->sample_period;  in perf_swevent_init_hrtimer()
7931 	hwc->sample_period = attr->sample_period;  in perf_event_alloc()
7933 		hwc->sample_period = 1;  in perf_event_alloc()
7934 	hwc->last_period = hwc->sample_period;  in perf_event_alloc()
7936 	local64_set(&hwc->period_left, hwc->sample_period);  in perf_event_alloc()
8275 		if (attr.sample_period & (1ULL << 63))  in SYSCALL_DEFINE5()
9067 		u64 sample_period = parent_event->hw.sample_period;  in inherit_event()  local
9070 		hwc->sample_period = sample_period;  in inherit_event()
9071 		hwc->last_period   = sample_period;  in inherit_event()
9073 		local64_set(&hwc->period_left, sample_period);  in inherit_event()