static void perf_log_throttle(struct perf_event *event, int enable)
{
	struct perf_output_handle handle;
	struct perf_sample_data sample;
	int ret;

	struct {
		struct perf_event_header	header;
		u64				time;
		u64				id;
		u64				stream_id;
	} throttle_event = {
		.header = {
			.type = PERF_RECORD_THROTTLE,
			.misc = 0,
			.size = sizeof(throttle_event),
		},
		.time		= perf_clock(),
		.id		= primary_event_id(event),
		.stream_id	= event->id,
	};

	if (enable)
		throttle_event.header.type = PERF_RECORD_UNTHROTTLE;

	perf_event_header__init_id(&throttle_event.header, &sample, event);

	ret = perf_output_begin(&handle, event,
				throttle_event.header.size, 0);
	if (ret)
		return;

	perf_output_put(&handle, throttle_event);
	perf_event__output_id_sample(event, &handle, &sample);
	perf_output_end(&handle);
}
The software does not properly control the allocation and maintenance of a limited resource, thereby enabling an actor to influence the amount of resources consumed, eventually leading to the exhaustion of available resources.