Lines Matching +full:set +full:- +full:top
1 // SPDX-License-Identifier: GPL-2.0
84 * timerlat_free_top - free runtime data
89 free(data->cpu_data); in timerlat_free_top()
94 * timerlat_alloc_histogram - alloc runtime data
105 data->nr_cpus = nr_cpus; in timerlat_alloc_top()
107 /* one set of histograms per CPU */ in timerlat_alloc_top()
108 data->cpu_data = calloc(1, sizeof(*data->cpu_data) * nr_cpus); in timerlat_alloc_top()
109 if (!data->cpu_data) in timerlat_alloc_top()
112 /* set the min to max */ in timerlat_alloc_top()
114 data->cpu_data[cpu].min_irq = ~0; in timerlat_alloc_top()
115 data->cpu_data[cpu].min_thread = ~0; in timerlat_alloc_top()
116 data->cpu_data[cpu].min_user = ~0; in timerlat_alloc_top()
130 summary->min_irq = ~0; in timerlat_top_reset_sum()
131 summary->min_thread = ~0; in timerlat_top_reset_sum()
132 summary->min_user = ~0; in timerlat_top_reset_sum()
138 struct timerlat_top_data *data = tool->data; in timerlat_top_update_sum()
139 struct timerlat_top_cpu *cpu_data = &data->cpu_data[cpu]; in timerlat_top_update_sum()
141 sum->irq_count += cpu_data->irq_count; in timerlat_top_update_sum()
142 update_min(&sum->min_irq, &cpu_data->min_irq); in timerlat_top_update_sum()
143 update_sum(&sum->sum_irq, &cpu_data->sum_irq); in timerlat_top_update_sum()
144 update_max(&sum->max_irq, &cpu_data->max_irq); in timerlat_top_update_sum()
146 sum->thread_count += cpu_data->thread_count; in timerlat_top_update_sum()
147 update_min(&sum->min_thread, &cpu_data->min_thread); in timerlat_top_update_sum()
148 update_sum(&sum->sum_thread, &cpu_data->sum_thread); in timerlat_top_update_sum()
149 update_max(&sum->max_thread, &cpu_data->max_thread); in timerlat_top_update_sum()
151 sum->user_count += cpu_data->user_count; in timerlat_top_update_sum()
152 update_min(&sum->min_user, &cpu_data->min_user); in timerlat_top_update_sum()
153 update_sum(&sum->sum_user, &cpu_data->sum_user); in timerlat_top_update_sum()
154 update_max(&sum->max_user, &cpu_data->max_user); in timerlat_top_update_sum()
158 * timerlat_hist_update - record a new timerlat occurent on cpu, updating data
165 struct timerlat_top_data *data = tool->data; in timerlat_top_update()
166 struct timerlat_top_cpu *cpu_data = &data->cpu_data[cpu]; in timerlat_top_update()
169 cpu_data->irq_count++; in timerlat_top_update()
170 cpu_data->cur_irq = latency; in timerlat_top_update()
171 update_min(&cpu_data->min_irq, &latency); in timerlat_top_update()
172 update_sum(&cpu_data->sum_irq, &latency); in timerlat_top_update()
173 update_max(&cpu_data->max_irq, &latency); in timerlat_top_update()
175 cpu_data->thread_count++; in timerlat_top_update()
176 cpu_data->cur_thread = latency; in timerlat_top_update()
177 update_min(&cpu_data->min_thread, &latency); in timerlat_top_update()
178 update_sum(&cpu_data->sum_thread, &latency); in timerlat_top_update()
179 update_max(&cpu_data->max_thread, &latency); in timerlat_top_update()
181 cpu_data->user_count++; in timerlat_top_update()
182 cpu_data->cur_user = latency; in timerlat_top_update()
183 update_min(&cpu_data->min_user, &latency); in timerlat_top_update()
184 update_sum(&cpu_data->sum_user, &latency); in timerlat_top_update()
185 update_max(&cpu_data->max_user, &latency); in timerlat_top_update()
190 * timerlat_top_handler - this is the handler for timerlat tracer events
199 struct osnoise_tool *top; in timerlat_top_handler() local
200 int cpu = record->cpu; in timerlat_top_handler()
202 top = container_of(trace, struct osnoise_tool, trace); in timerlat_top_handler()
203 params = top->params; in timerlat_top_handler()
205 if (!params->aa_only) { in timerlat_top_handler()
209 timerlat_top_update(top, cpu, thread, latency); in timerlat_top_handler()
216 * timerlat_top_header - print the header of the tool output
218 static void timerlat_top_header(struct timerlat_top_params *params, struct osnoise_tool *top) in timerlat_top_header() argument
220 struct trace_seq *s = top->trace.seq; in timerlat_top_header()
223 get_duration(top->start_time, duration, sizeof(duration)); in timerlat_top_header()
225 if (params->pretty_output) in timerlat_top_header()
229 if (params->user_top) in timerlat_top_header()
232 if (params->pretty_output) in timerlat_top_header()
236 …trace_seq_printf(s, "%-6s | IRQ Timer Latency (%s) | Thread Timer Latenc… in timerlat_top_header()
237 params->output_divisor == 1 ? "ns" : "us", in timerlat_top_header()
238 params->output_divisor == 1 ? "ns" : "us"); in timerlat_top_header()
240 if (params->user_top) { in timerlat_top_header()
242 params->output_divisor == 1 ? "ns" : "us"); in timerlat_top_header()
246 if (params->pretty_output) in timerlat_top_header()
250 if (params->user_top) in timerlat_top_header()
253 if (params->pretty_output) in timerlat_top_header()
258 static const char *no_value = " -";
261 * timerlat_top_print - prints the output of a given CPU
263 static void timerlat_top_print(struct osnoise_tool *top, int cpu) in timerlat_top_print() argument
266 struct timerlat_top_params *params = top->params; in timerlat_top_print()
267 struct timerlat_top_data *data = top->data; in timerlat_top_print()
268 struct timerlat_top_cpu *cpu_data = &data->cpu_data[cpu]; in timerlat_top_print()
269 int divisor = params->output_divisor; in timerlat_top_print()
270 struct trace_seq *s = top->trace.seq; in timerlat_top_print()
278 if (!cpu_data->irq_count && !cpu_data->thread_count) in timerlat_top_print()
284 trace_seq_printf(s, "%3d #%-9llu |", cpu, cpu_data->irq_count); in timerlat_top_print()
286 if (!cpu_data->irq_count) { in timerlat_top_print()
289 trace_seq_printf(s, "%9llu ", cpu_data->cur_irq / params->output_divisor); in timerlat_top_print()
290 trace_seq_printf(s, "%9llu ", cpu_data->min_irq / params->output_divisor); in timerlat_top_print()
291 trace_seq_printf(s, "%9llu ", (cpu_data->sum_irq / cpu_data->irq_count) / divisor); in timerlat_top_print()
292 trace_seq_printf(s, "%9llu |", cpu_data->max_irq / divisor); in timerlat_top_print()
295 if (!cpu_data->thread_count) { in timerlat_top_print()
298 trace_seq_printf(s, "%9llu ", cpu_data->cur_thread / divisor); in timerlat_top_print()
299 trace_seq_printf(s, "%9llu ", cpu_data->min_thread / divisor); in timerlat_top_print()
301 (cpu_data->sum_thread / cpu_data->thread_count) / divisor); in timerlat_top_print()
302 trace_seq_printf(s, "%9llu", cpu_data->max_thread / divisor); in timerlat_top_print()
305 if (!params->user_top) { in timerlat_top_print()
312 if (!cpu_data->user_count) { in timerlat_top_print()
315 trace_seq_printf(s, "%9llu ", cpu_data->cur_user / divisor); in timerlat_top_print()
316 trace_seq_printf(s, "%9llu ", cpu_data->min_user / divisor); in timerlat_top_print()
318 (cpu_data->sum_user / cpu_data->user_count) / divisor); in timerlat_top_print()
319 trace_seq_printf(s, "%9llu\n", cpu_data->max_user / divisor); in timerlat_top_print()
324 * timerlat_top_print_sum - prints the summary output
327 timerlat_top_print_sum(struct osnoise_tool *top, struct timerlat_top_cpu *summary) in timerlat_top_print_sum() argument
329 const char *split = "----------------------------------------"; in timerlat_top_print_sum()
330 struct timerlat_top_params *params = top->params; in timerlat_top_print_sum()
331 unsigned long long count = summary->irq_count; in timerlat_top_print_sum()
332 int divisor = params->output_divisor; in timerlat_top_print_sum()
333 struct trace_seq *s = top->trace.seq; in timerlat_top_print_sum()
342 if (!summary->irq_count && !summary->thread_count) in timerlat_top_print_sum()
351 if (params->user_top) in timerlat_top_print_sum()
352 trace_seq_printf(s, "-|%.*s", 39, split); in timerlat_top_print_sum()
355 trace_seq_printf(s, "ALL #%-6llu e%d |", count, e); in timerlat_top_print_sum()
357 if (!summary->irq_count) { in timerlat_top_print_sum()
361 trace_seq_printf(s, "%9llu ", summary->min_irq / params->output_divisor); in timerlat_top_print_sum()
362 trace_seq_printf(s, "%9llu ", (summary->sum_irq / summary->irq_count) / divisor); in timerlat_top_print_sum()
363 trace_seq_printf(s, "%9llu |", summary->max_irq / divisor); in timerlat_top_print_sum()
366 if (!summary->thread_count) { in timerlat_top_print_sum()
370 trace_seq_printf(s, "%9llu ", summary->min_thread / divisor); in timerlat_top_print_sum()
372 (summary->sum_thread / summary->thread_count) / divisor); in timerlat_top_print_sum()
373 trace_seq_printf(s, "%9llu", summary->max_thread / divisor); in timerlat_top_print_sum()
376 if (!params->user_top) { in timerlat_top_print_sum()
383 if (!summary->user_count) { in timerlat_top_print_sum()
387 trace_seq_printf(s, "%9llu ", summary->min_user / divisor); in timerlat_top_print_sum()
389 (summary->sum_user / summary->user_count) / divisor); in timerlat_top_print_sum()
390 trace_seq_printf(s, "%9llu\n", summary->max_user / divisor); in timerlat_top_print_sum()
395 * clear_terminal - clears the output terminal
404 * timerlat_print_stats - print data for all cpus
407 timerlat_print_stats(struct timerlat_top_params *params, struct osnoise_tool *top) in timerlat_print_stats() argument
409 struct trace_instance *trace = &top->trace; in timerlat_print_stats()
411 static int nr_cpus = -1; in timerlat_print_stats()
414 if (params->aa_only) in timerlat_print_stats()
417 if (nr_cpus == -1) in timerlat_print_stats()
420 if (!params->quiet) in timerlat_print_stats()
421 clear_terminal(trace->seq); in timerlat_print_stats()
425 timerlat_top_header(params, top); in timerlat_print_stats()
428 if (params->cpus && !CPU_ISSET(i, ¶ms->monitored_cpus)) in timerlat_print_stats()
430 timerlat_top_print(top, i); in timerlat_print_stats()
431 timerlat_top_update_sum(top, i, &summary); in timerlat_print_stats()
434 timerlat_top_print_sum(top, &summary); in timerlat_print_stats()
436 trace_seq_do_printf(trace->seq); in timerlat_print_stats()
437 trace_seq_reset(trace->seq); in timerlat_print_stats()
438 osnoise_report_missed_events(top); in timerlat_print_stats()
442 * timerlat_top_usage - prints timerlat top usage message
450 …" usage: rtla timerlat [top] [-h] [-q] [-a us] [-d s] [-D] [-n] [-p us] [-i us] [-T us] [-s us] \… in timerlat_top_usage()
451 …" [[-t[file]] [-e sys[:event]] [--filter <filter>] [--trigger <trigger>] [-c cpu-list] [-H cpu-l… in timerlat_top_usage()
452 …" [-P priority] [--dma-latency us] [--aa-only us] [-C[=cgroup_name]] [-u|-k] [--warm-up s] [--de… in timerlat_top_usage()
454 " -h/--help: print this menu", in timerlat_top_usage()
455 " -a/--auto: set automatic trace mode, stopping the session if argument in us latency is hit", in timerlat_top_usage()
456 …" --aa-only us: stop if <us> latency is hit, only printing the auto analysis (reduces CPU usa… in timerlat_top_usage()
457 " -p/--period us: timerlat period in us", in timerlat_top_usage()
458 " -i/--irq us: stop trace if the irq latency is higher than the argument in us", in timerlat_top_usage()
459 " -T/--thread us: stop trace if the thread latency is higher than the argument in us", in timerlat_top_usage()
460 …" -s/--stack us: save the stack trace at the IRQ if a thread latency is higher than the argument… in timerlat_top_usage()
461 " -c/--cpus cpus: run the tracer only on the given cpus", in timerlat_top_usage()
462 " -H/--house-keeping cpus: run rtla control threads only on the given cpus", in timerlat_top_usage()
463 …" -C/--cgroup[=cgroup_name]: set cgroup, if no cgroup_name is passed, the rtla's cgroup will be … in timerlat_top_usage()
464 " -d/--duration time[s|m|h|d]: duration of the session", in timerlat_top_usage()
465 " -D/--debug: print debug info", in timerlat_top_usage()
466 …" --dump-tasks: prints the task running on all CPUs if stop conditions are met (depends on !-… in timerlat_top_usage()
467 " -t/--trace[file]: save the stopped trace to [file|timerlat_trace.txt]", in timerlat_top_usage()
468 …" -e/--event <sys:event>: enable the <sys:event> in the trace instance, multiple -e are allowed", in timerlat_top_usage()
469 " --filter <command>: enable a trace event filter to the previous -e event", in timerlat_top_usage()
470 " --trigger <command>: enable a trace event trigger to the previous -e event", in timerlat_top_usage()
471 " -n/--nano: display data in nanoseconds", in timerlat_top_usage()
472 " --no-aa: disable auto-analysis, reducing rtla timerlat cpu usage", in timerlat_top_usage()
473 " -q/--quiet print only a summary at the end", in timerlat_top_usage()
474 " --dma-latency us: set /dev/cpu_dma_latency latency <us> to reduce exit from idle latency", in timerlat_top_usage()
475 " -P/--priority o:prio|r:prio|f:prio|d:runtime:period : set scheduling parameters", in timerlat_top_usage()
476 " o:prio - use SCHED_OTHER with prio", in timerlat_top_usage()
477 " r:prio - use SCHED_RR with prio", in timerlat_top_usage()
478 " f:prio - use SCHED_FIFO with prio", in timerlat_top_usage()
479 " d:runtime[us|ms|s]:period[us|ms|s] - use SCHED_DEADLINE with runtime and period", in timerlat_top_usage()
481 " -u/--user-threads: use rtla user-space threads instead of kernel-space timerlat threads", in timerlat_top_usage()
482 " -k/--kernel-threads: use timerlat kernel-space threads instead of rtla user-space threads", in timerlat_top_usage()
483 " -U/--user-load: enable timerlat for user-defined user-space workload", in timerlat_top_usage()
484 " --warm-up s: let the workload run for s seconds before collecting data", in timerlat_top_usage()
485 " --trace-buffer-size kB: set the per-cpu trace buffer size in kB", in timerlat_top_usage()
486 …" --deepest-idle-state n: only go down to idle state n on cpus used by timerlat to reduce exi… in timerlat_top_usage()
493 fprintf(stderr, "rtla timerlat top: a per-cpu summary of the timer latency (version %s)\n", in timerlat_top_usage()
506 * timerlat_top_parse_args - allocs, parse and fill the cmd line parameters
522 params->dma_latency = -1; in timerlat_top_parse_args()
525 params->deepest_idle_state = -2; in timerlat_top_parse_args()
528 params->output_divisor = 1000; in timerlat_top_parse_args()
539 {"house-keeping", required_argument, 0, 'H'}, in timerlat_top_parse_args()
548 {"user-threads", no_argument, 0, 'u'}, in timerlat_top_parse_args()
549 {"kernel-threads", no_argument, 0, 'k'}, in timerlat_top_parse_args()
550 {"user-load", no_argument, 0, 'U'}, in timerlat_top_parse_args()
553 {"dma-latency", required_argument, 0, '2'}, in timerlat_top_parse_args()
554 {"no-aa", no_argument, 0, '3'}, in timerlat_top_parse_args()
555 {"dump-tasks", no_argument, 0, '4'}, in timerlat_top_parse_args()
556 {"aa-only", required_argument, 0, '5'}, in timerlat_top_parse_args()
557 {"warm-up", required_argument, 0, '6'}, in timerlat_top_parse_args()
558 {"trace-buffer-size", required_argument, 0, '7'}, in timerlat_top_parse_args()
559 {"deepest-idle-state", required_argument, 0, '8'}, in timerlat_top_parse_args()
570 if (c == -1) in timerlat_top_parse_args()
577 /* set thread stop to auto_thresh */ in timerlat_top_parse_args()
578 params->stop_total_us = auto_thresh; in timerlat_top_parse_args()
579 params->stop_us = auto_thresh; in timerlat_top_parse_args()
582 params->print_stack = auto_thresh; in timerlat_top_parse_args()
584 /* set trace */ in timerlat_top_parse_args()
585 params->trace_output = "timerlat_trace.txt"; in timerlat_top_parse_args()
588 /* it is here because it is similar to -a */ in timerlat_top_parse_args()
591 /* set thread stop to auto_thresh */ in timerlat_top_parse_args()
592 params->stop_total_us = auto_thresh; in timerlat_top_parse_args()
593 params->stop_us = auto_thresh; in timerlat_top_parse_args()
596 params->print_stack = auto_thresh; in timerlat_top_parse_args()
598 /* set aa_only to avoid parsing the trace */ in timerlat_top_parse_args()
599 params->aa_only = 1; in timerlat_top_parse_args()
602 retval = parse_cpu_set(optarg, ¶ms->monitored_cpus); in timerlat_top_parse_args()
604 timerlat_top_usage("\nInvalid -c cpu list\n"); in timerlat_top_parse_args()
605 params->cpus = optarg; in timerlat_top_parse_args()
608 params->cgroup = 1; in timerlat_top_parse_args()
611 params->cgroup_name = NULL; in timerlat_top_parse_args()
614 params->cgroup_name = ++optarg; in timerlat_top_parse_args()
621 params->duration = parse_seconds_duration(optarg); in timerlat_top_parse_args()
622 if (!params->duration) in timerlat_top_parse_args()
623 timerlat_top_usage("Invalid -d duration\n"); in timerlat_top_parse_args()
632 if (params->events) in timerlat_top_parse_args()
633 tevent->next = params->events; in timerlat_top_parse_args()
634 params->events = tevent; in timerlat_top_parse_args()
641 params->hk_cpus = 1; in timerlat_top_parse_args()
642 retval = parse_cpu_set(optarg, ¶ms->hk_cpu_set); in timerlat_top_parse_args()
649 params->stop_us = get_llong_from_str(optarg); in timerlat_top_parse_args()
652 params->kernel_workload = true; in timerlat_top_parse_args()
655 params->output_divisor = 1; in timerlat_top_parse_args()
658 params->timerlat_period_us = get_llong_from_str(optarg); in timerlat_top_parse_args()
659 if (params->timerlat_period_us > 1000000) in timerlat_top_parse_args()
663 retval = parse_prio(optarg, ¶ms->sched_param); in timerlat_top_parse_args()
664 if (retval == -1) in timerlat_top_parse_args()
665 timerlat_top_usage("Invalid -P priority"); in timerlat_top_parse_args()
666 params->set_sched = 1; in timerlat_top_parse_args()
669 params->quiet = 1; in timerlat_top_parse_args()
672 params->print_stack = get_llong_from_str(optarg); in timerlat_top_parse_args()
675 params->stop_total_us = get_llong_from_str(optarg); in timerlat_top_parse_args()
680 params->trace_output = &optarg[1]; in timerlat_top_parse_args()
682 params->trace_output = &optarg[0]; in timerlat_top_parse_args()
683 } else if (optind < argc && argv[optind][0] != '-') in timerlat_top_parse_args()
684 params->trace_output = argv[optind]; in timerlat_top_parse_args()
686 params->trace_output = "timerlat_trace.txt"; in timerlat_top_parse_args()
690 params->user_workload = true; in timerlat_top_parse_args()
691 /* fallback: -u implies -U */ in timerlat_top_parse_args()
693 params->user_top = true; in timerlat_top_parse_args()
696 if (params->events) { in timerlat_top_parse_args()
697 retval = trace_event_add_trigger(params->events, optarg); in timerlat_top_parse_args()
703 timerlat_top_usage("--trigger requires a previous -e\n"); in timerlat_top_parse_args()
707 if (params->events) { in timerlat_top_parse_args()
708 retval = trace_event_add_filter(params->events, optarg); in timerlat_top_parse_args()
714 timerlat_top_usage("--filter requires a previous -e\n"); in timerlat_top_parse_args()
717 case '2': /* dma-latency */ in timerlat_top_parse_args()
718 params->dma_latency = get_llong_from_str(optarg); in timerlat_top_parse_args()
719 if (params->dma_latency < 0 || params->dma_latency > 10000) { in timerlat_top_parse_args()
720 err_msg("--dma-latency needs to be >= 0 and < 10000"); in timerlat_top_parse_args()
724 case '3': /* no-aa */ in timerlat_top_parse_args()
725 params->no_aa = 1; in timerlat_top_parse_args()
728 params->dump_tasks = 1; in timerlat_top_parse_args()
731 params->warmup = get_llong_from_str(optarg); in timerlat_top_parse_args()
734 params->buffer_size = get_llong_from_str(optarg); in timerlat_top_parse_args()
737 params->deepest_idle_state = get_llong_from_str(optarg); in timerlat_top_parse_args()
752 if (!params->stop_us && !params->stop_total_us) in timerlat_top_parse_args()
753 params->no_aa = 1; in timerlat_top_parse_args()
755 if (params->no_aa && params->aa_only) in timerlat_top_parse_args()
756 timerlat_top_usage("--no-aa and --aa-only are mutually exclusive!"); in timerlat_top_parse_args()
758 if (params->kernel_workload && params->user_workload) in timerlat_top_parse_args()
759 timerlat_top_usage("--kernel-threads and --user-threads are mutually exclusive!"); in timerlat_top_parse_args()
765 * timerlat_top_apply_config - apply the top configs to the initialized tool
768 timerlat_top_apply_config(struct osnoise_tool *top, struct timerlat_top_params *params) in timerlat_top_apply_config() argument
773 if (!params->sleep_time) in timerlat_top_apply_config()
774 params->sleep_time = 1; in timerlat_top_apply_config()
776 if (params->cpus) { in timerlat_top_apply_config()
777 retval = osnoise_set_cpus(top->context, params->cpus); in timerlat_top_apply_config()
784 CPU_SET(i, ¶ms->monitored_cpus); in timerlat_top_apply_config()
787 if (params->stop_us) { in timerlat_top_apply_config()
788 retval = osnoise_set_stop_us(top->context, params->stop_us); in timerlat_top_apply_config()
790 err_msg("Failed to set stop us\n"); in timerlat_top_apply_config()
795 if (params->stop_total_us) { in timerlat_top_apply_config()
796 retval = osnoise_set_stop_total_us(top->context, params->stop_total_us); in timerlat_top_apply_config()
798 err_msg("Failed to set stop total us\n"); in timerlat_top_apply_config()
804 if (params->timerlat_period_us) { in timerlat_top_apply_config()
805 retval = osnoise_set_timerlat_period_us(top->context, params->timerlat_period_us); in timerlat_top_apply_config()
807 err_msg("Failed to set timerlat period\n"); in timerlat_top_apply_config()
813 if (params->print_stack) { in timerlat_top_apply_config()
814 retval = osnoise_set_print_stack(top->context, params->print_stack); in timerlat_top_apply_config()
816 err_msg("Failed to set print stack\n"); in timerlat_top_apply_config()
821 if (params->hk_cpus) { in timerlat_top_apply_config()
822 retval = sched_setaffinity(getpid(), sizeof(params->hk_cpu_set), in timerlat_top_apply_config()
823 ¶ms->hk_cpu_set); in timerlat_top_apply_config()
824 if (retval == -1) { in timerlat_top_apply_config()
825 err_msg("Failed to set rtla to the house keeping CPUs\n"); in timerlat_top_apply_config()
828 } else if (params->cpus) { in timerlat_top_apply_config()
830 * Even if the user do not set a house-keeping CPU, try to in timerlat_top_apply_config()
831 * move rtla to a CPU set different to the one where the user in timerlat_top_apply_config()
832 * set the workload to run. in timerlat_top_apply_config()
836 auto_house_keeping(¶ms->monitored_cpus); in timerlat_top_apply_config()
840 * If the user did not specify a type of thread, try user-threads first. in timerlat_top_apply_config()
843 if (!params->kernel_workload && !params->user_top) { in timerlat_top_apply_config()
846 debug_msg("User-space interface detected, setting user-threads\n"); in timerlat_top_apply_config()
847 params->user_workload = 1; in timerlat_top_apply_config()
848 params->user_top = 1; in timerlat_top_apply_config()
850 debug_msg("User-space interface not detected, setting kernel-threads\n"); in timerlat_top_apply_config()
851 params->kernel_workload = 1; in timerlat_top_apply_config()
856 * Set workload according to type of thread if the kernel supports it. in timerlat_top_apply_config()
860 retval = osnoise_set_workload(top->context, params->kernel_workload); in timerlat_top_apply_config()
861 if (retval < -1) { in timerlat_top_apply_config()
862 err_msg("Failed to set OSNOISE_WORKLOAD option\n"); in timerlat_top_apply_config()
866 if (isatty(STDOUT_FILENO) && !params->quiet) in timerlat_top_apply_config()
867 params->pretty_output = 1; in timerlat_top_apply_config()
872 return -1; in timerlat_top_apply_config()
876 * timerlat_init_top - initialize a timerlat top tool with parameters
881 struct osnoise_tool *top; in timerlat_init_top() local
886 top = osnoise_init_tool("timerlat_top"); in timerlat_init_top()
887 if (!top) in timerlat_init_top()
890 top->data = timerlat_alloc_top(nr_cpus); in timerlat_init_top()
891 if (!top->data) in timerlat_init_top()
894 top->params = params; in timerlat_init_top()
896 tep_register_event_handler(top->trace.tep, -1, "ftrace", "timerlat", in timerlat_init_top()
897 timerlat_top_handler, top); in timerlat_init_top()
899 return top; in timerlat_init_top()
902 osnoise_destroy_tool(top); in timerlat_init_top()
915 tracefs_iterate_stop(top_inst->inst); in stop_top()
924 * timerlat_top_set_signals - handles the signal to stop the tool
930 if (params->duration) { in timerlat_top_set_signals()
932 alarm(params->duration); in timerlat_top_set_signals()
941 struct osnoise_tool *top = NULL; in timerlat_top_main() local
944 int dma_latency_fd = -1; in timerlat_top_main()
955 top = timerlat_init_top(params); in timerlat_top_main()
956 if (!top) { in timerlat_top_main()
957 err_msg("Could not init osnoise top\n"); in timerlat_top_main()
961 retval = timerlat_top_apply_config(top, params); in timerlat_top_main()
967 trace = &top->trace; in timerlat_top_main()
982 if (params->set_sched) { in timerlat_top_main()
983 retval = set_comm_sched_attr("timerlat/", ¶ms->sched_param); in timerlat_top_main()
985 err_msg("Failed to set sched parameters\n"); in timerlat_top_main()
990 if (params->cgroup && !params->user_top) { in timerlat_top_main()
991 retval = set_comm_cgroup("timerlat/", params->cgroup_name); in timerlat_top_main()
998 if (params->dma_latency >= 0) { in timerlat_top_main()
999 dma_latency_fd = set_cpu_dma_latency(params->dma_latency); in timerlat_top_main()
1001 err_msg("Could not set /dev/cpu_dma_latency.\n"); in timerlat_top_main()
1006 if (params->deepest_idle_state >= -1) { in timerlat_top_main()
1008 err_msg("rtla built without libcpupower, --deepest-idle-state is not supported\n"); in timerlat_top_main()
1015 if (params->cpus && !CPU_ISSET(i, ¶ms->monitored_cpus)) in timerlat_top_main()
1021 if (set_deepest_cpu_idle_state(i, params->deepest_idle_state) < 0) { in timerlat_top_main()
1022 err_msg("Could not set deepest cpu idle state.\n"); in timerlat_top_main()
1028 if (params->trace_output) { in timerlat_top_main()
1035 if (params->events) { in timerlat_top_main()
1036 retval = trace_events_enable(&record->trace, params->events); in timerlat_top_main()
1041 if (params->buffer_size > 0) { in timerlat_top_main()
1042 retval = trace_set_buffer_size(&record->trace, params->buffer_size); in timerlat_top_main()
1048 if (!params->no_aa) { in timerlat_top_main()
1049 if (params->aa_only) { in timerlat_top_main()
1050 /* as top is not used for display, use it for aa */ in timerlat_top_main()
1051 aa = top; in timerlat_top_main()
1059 retval = timerlat_aa_init(aa, params->dump_tasks); in timerlat_top_main()
1065 /* if it is re-using the main instance, there is no need to start it */ in timerlat_top_main()
1066 if (aa != top) { in timerlat_top_main()
1067 retval = enable_timerlat(&aa->trace); in timerlat_top_main()
1075 if (params->user_workload) { in timerlat_top_main()
1081 params_u.set = ¶ms->monitored_cpus; in timerlat_top_main()
1082 if (params->set_sched) in timerlat_top_main()
1083 params_u.sched_param = ¶ms->sched_param; in timerlat_top_main()
1087 params_u.cgroup_name = params->cgroup_name; in timerlat_top_main()
1091 err_msg("Error creating timerlat user-space threads\n"); in timerlat_top_main()
1094 if (params->warmup > 0) { in timerlat_top_main()
1095 debug_msg("Warming up for %d seconds\n", params->warmup); in timerlat_top_main()
1096 sleep(params->warmup); in timerlat_top_main()
1100 * Start the tracers here, after having set all instances. in timerlat_top_main()
1106 if (params->trace_output) in timerlat_top_main()
1107 trace_instance_start(&record->trace); in timerlat_top_main()
1108 if (!params->no_aa && aa != top) in timerlat_top_main()
1109 trace_instance_start(&aa->trace); in timerlat_top_main()
1112 top->start_time = time(NULL); in timerlat_top_main()
1116 sleep(params->sleep_time); in timerlat_top_main()
1118 if (params->aa_only && !osnoise_trace_is_off(top, record)) in timerlat_top_main()
1121 retval = tracefs_iterate_raw_events(trace->tep, in timerlat_top_main()
1122 trace->inst, in timerlat_top_main()
1132 if (!params->quiet) in timerlat_top_main()
1133 timerlat_print_stats(params, top); in timerlat_top_main()
1135 if (osnoise_trace_is_off(top, record)) in timerlat_top_main()
1138 /* is there still any user-threads ? */ in timerlat_top_main()
1139 if (params->user_workload) { in timerlat_top_main()
1147 if (params->user_workload && !params_u.stopped_running) { in timerlat_top_main()
1152 timerlat_print_stats(params, top); in timerlat_top_main()
1156 if (osnoise_trace_is_off(top, record) && !stop_tracing) { in timerlat_top_main()
1159 if (!params->no_aa) in timerlat_top_main()
1160 timerlat_auto_analysis(params->stop_us, params->stop_total_us); in timerlat_top_main()
1162 if (params->trace_output) { in timerlat_top_main()
1163 printf(" Saving trace to %s\n", params->trace_output); in timerlat_top_main()
1164 save_trace_to_file(record->trace.inst, params->trace_output); in timerlat_top_main()
1166 } else if (params->aa_only) { in timerlat_top_main()
1168 * If the trace did not stop with --aa-only, at least print the in timerlat_top_main()
1171 max_lat = tracefs_instance_file_read(trace->inst, "tracing_max_latency", NULL); in timerlat_top_main()
1182 if (params->deepest_idle_state >= -1) { in timerlat_top_main()
1184 if (params->cpus && !CPU_ISSET(i, ¶ms->monitored_cpus)) in timerlat_top_main()
1189 trace_events_destroy(&record->trace, params->events); in timerlat_top_main()
1190 params->events = NULL; in timerlat_top_main()
1192 timerlat_free_top(top->data); in timerlat_top_main()
1193 if (aa && aa != top) in timerlat_top_main()
1196 osnoise_destroy_tool(top); in timerlat_top_main()