3  * OS Noise Tracer: computes the OS Noise suffered by a running thread.
199 	u64			noise;		/* noise */  member
200 	u64			max_sample;	/* max single noise sample */
280 	seq_puts(s, "   NOISE  %% OF CPU  NOISE    +-----------------------------+\n");  in print_osnoise_headers()
304 	seq_puts(s, "   NOISE  %% OF CPU  NOISE    +-----------------------------+\n");  in print_osnoise_headers()
341 	entry->noise		= sample->noise;  in trace_osnoise_sample()
664  * occurrence, compute the noise caused by the NMI, and to remove the noise
727  * Computes the duration of the IRQ noise, and trace it. Also discounts the
728  * interference from other sources of noise could be currently being accounted.
858  * Computes the duration of the softirq noise, and trace it. Also discounts the
859  * interference from other sources of noise could be currently being accounted.
942  * thread_entry - Record the starting of a thread noise window
965  * thread_exit - Report the end of a thread noise window
967  * It computes the total noise from a thread, tracing if needed.
1000  * used to record the beginning and to report the end of a thread noise window.
1016  * hook_thread_events - Hook the insturmentation for thread noise
1018  * Hook the osnoise tracer callbacks to handle the noise from other
1033  * unhook_thread_events - *nhook the insturmentation for thread noise
1035  * Unook the osnoise tracer callbacks to handle the noise from other
1102 	s64 noise = 0, max_noise = 0;  in run_osnoise()  local
1155 		noise = time_sub(sample, last_sample);  in run_osnoise()
1160 		if (noise < 0) {  in run_osnoise()
1161 			osnoise_taint("negative noise!");  in run_osnoise()
1180 		if (noise >= threshold) {  in run_osnoise()
1183 			if (noise > max_noise)  in run_osnoise()
1184 				max_noise = noise;  in run_osnoise()
1189 			sum_noise += noise;  in run_osnoise()
1191 			trace_sample_threshold(last_sample, noise, interference);  in run_osnoise()
1194 				if (noise > stop_in)  in run_osnoise()
1222 	 * Save noise info.  in run_osnoise()
1224 	s.noise = time_to_us(sum_noise);  in run_osnoise()
1241 		if (s.noise > osnoise_data.stop_tracing_total)  in run_osnoise()
1367 	/* Keep a running maximum ever recorded os noise "latency" */  in timerlat_irq()