3  * OS Noise Tracer: computes the OS Noise suffered by a running thread.
324 	u64			noise;		/* noise */  member
325 	u64			max_sample;	/* max single noise sample */
446 	seq_puts(s, "   NOISE  %% OF CPU  NOISE    +-----------------------------+\n");  in print_osnoise_headers()
470 	seq_puts(s, "   NOISE  %% OF CPU  NOISE    +-----------------------------+\n");  in print_osnoise_headers()
511 	entry->noise		= sample->noise;  in __trace_osnoise_sample()
874  * occurrence, compute the noise caused by the NMI, and to remove the noise
937  * Computes the duration of the IRQ noise, and trace it. Also discounts the
938  * interference from other sources of noise could be currently being accounted.
1068  * Computes the duration of the softirq noise, and trace it. Also discounts the
1069  * interference from other sources of noise could be currently being accounted.
1140  * thread_entry - Record the starting of a thread noise window
1163  * thread_exit - Report the end of a thread noise window
1165  * It computes the total noise from a thread, tracing if needed.
1273  * used to record the beginning and to report the end of a thread noise window.
1292  * hook_thread_events - Hook the instrumentation for thread noise
1294  * Hook the osnoise tracer callbacks to handle the noise from other
1317  * unhook_thread_events - unhook the instrumentation for thread noise
1319  * Unook the osnoise tracer callbacks to handle the noise from other
1431 	s64 noise = 0, max_noise = 0;  in run_osnoise()  local
1500 		noise = time_sub(sample, last_sample);  in run_osnoise()
1505 		if (noise < 0) {  in run_osnoise()
1506 			osnoise_taint("negative noise!");  in run_osnoise()
1525 		if (noise >= threshold) {  in run_osnoise()
1528 			if (noise > max_noise)  in run_osnoise()
1529 				max_noise = noise;  in run_osnoise()
1534 			sum_noise += noise;  in run_osnoise()
1536 			trace_sample_threshold(last_sample, noise, interference);  in run_osnoise()
1539 				if (noise > stop_in)  in run_osnoise()
1546 		 * This will eventually cause unwarranted noise as PREEMPT_RCU  in run_osnoise()
1601 	 * Save noise info.  in run_osnoise()
1603 	s.noise = time_to_us(sum_noise);  in run_osnoise()
1616 		if (s.noise > osnoise_data.stop_tracing_total)  in run_osnoise()