213 	struct osn_softirq	softirq;  member
379 		osn_var->softirq.arrival_time = 0;  in timerlat_softirq_exit()
380 		osn_var->softirq.delta_start = 0;  in timerlat_softirq_exit()
428 	seq_puts(s, "#                              || / _----=> hardirq/softirq\n");  in print_osnoise_headers()
456 	seq_puts(s, "#                              | / _---=> hardirq/softirq\n");  in print_osnoise_headers()
544 	seq_puts(s, "#                              || / _----=> hardirq/softirq\n");  in print_timerlat_headers()
560 	seq_puts(s, "#                              | / _---=> hardirq/softirq\n");  in print_timerlat_headers()
728  * cond_move_softirq_delta_start - Forward the delta_start of a running softirq.
730  * If a softirq is preempted by an IRQ or NMI, its delta_start is pushed
738 	if (osn_var->softirq.delta_start)  in cond_move_softirq_delta_start()
739 		osn_var->softirq.delta_start += duration;  in cond_move_softirq_delta_start()
748  * If a noisy thread is preempted by an softirq, IRQ or NMI, its delta_start
763  * The irq, softirq and thread varaibles need to have its duration without
1040  * trace_softirq_entry_callback - Note the starting of a softirq
1042  * Save the starting time of a softirq. As softirqs are non-preemptive to
1043  * other softirqs, it is safe to use a single variable (ons_var->softirq)
1046  * softirq exit handler. See cond_move_softirq_delta_start().
1058 	osn_var->softirq.arrival_time = time_get();  in trace_softirq_entry_callback()
1059 	set_int_safe_time(osn_var, &osn_var->softirq.delta_start);  in trace_softirq_entry_callback()
1060 	osn_var->softirq.count++;  in trace_softirq_entry_callback()
1066  * trace_softirq_exit_callback - Note the end of an softirq
1068  * Computes the duration of the softirq noise, and trace it. Also discounts the
1083 	duration = get_int_safe_duration(osn_var, &osn_var->softirq.delta_start);  in trace_softirq_exit_callback()
1084 	trace_softirq_noise(vec_nr, osn_var->softirq.arrival_time, duration);  in trace_softirq_exit_callback()
1086 	osn_var->softirq.arrival_time = 0;  in trace_softirq_exit_callback()
1090  * hook_softirq_events - Hook softirq handling events
1092  * This function hooks the softirq related callbacks to the respective trace
1116  * unhook_softirq_events - Unhook softirq handling events
1118  * This function hooks the softirq related callbacks to the respective trace
1128  * softirq are threads on the PREEMPT_RT mode.
1329 	s->softirq_count = osn_var->softirq.count;  in save_osn_sample_stats()
1345 	s->softirq_count = osn_var->softirq.count - s->softirq_count;  in diff_osn_sample_stats()
1745 	 * Enable the osnoise: events for thread an softirq.  in timerlat_irq()
1753 	 * a thread, and potentially preempting a softirq.  in timerlat_irq()
1756 	 * preempted thread (and maybe softirq), but how much time they will  in timerlat_irq()
1759 	 * To get the correct (net) delay added by the softirq, its delta_start  in timerlat_irq()
1764 	 * The thread follows the same principle. However, if a softirq is  in timerlat_irq()
1765 	 * running, the thread needs to receive the softirq delta_start. The  in timerlat_irq()
1766 	 * reason being is that the softirq will be the last to be unfolded,  in timerlat_irq()
1772 	if (!IS_ENABLED(CONFIG_PREEMPT_RT) && osn_var->softirq.delta_start) {  in timerlat_irq()
1774 				   &osn_var->softirq.delta_start);  in timerlat_irq()
1776 		copy_int_safe_time(osn_var, &osn_var->softirq.delta_start,  in timerlat_irq()