1 // SPDX-License-Identifier: GPL-2.0
2 /*
3 * Copyright (C) 2021 Red Hat Inc, Daniel Bristot de Oliveira <bristot@kernel.org>
4 */
5
6 #define _GNU_SOURCE
7 #include <getopt.h>
8 #include <stdlib.h>
9 #include <string.h>
10 #include <signal.h>
11 #include <unistd.h>
12 #include <stdio.h>
13 #include <time.h>
14 #include <sched.h>
15
16 #include "osnoise.h"
17 #include "utils.h"
18
19 enum osnoise_mode {
20 MODE_OSNOISE = 0,
21 MODE_HWNOISE
22 };
23
24 /*
25 * osnoise top parameters
26 */
27 struct osnoise_top_params {
28 char *cpus;
29 cpu_set_t monitored_cpus;
30 char *trace_output;
31 char *cgroup_name;
32 unsigned long long runtime;
33 unsigned long long period;
34 long long threshold;
35 long long stop_us;
36 long long stop_total_us;
37 int sleep_time;
38 int duration;
39 int quiet;
40 int set_sched;
41 int cgroup;
42 int hk_cpus;
43 cpu_set_t hk_cpu_set;
44 struct sched_attr sched_param;
45 struct trace_events *events;
46 enum osnoise_mode mode;
47 };
48
49 struct osnoise_top_cpu {
50 unsigned long long sum_runtime;
51 unsigned long long sum_noise;
52 unsigned long long max_noise;
53 unsigned long long max_sample;
54
55 unsigned long long hw_count;
56 unsigned long long nmi_count;
57 unsigned long long irq_count;
58 unsigned long long softirq_count;
59 unsigned long long thread_count;
60
61 int sum_cycles;
62 };
63
64 struct osnoise_top_data {
65 struct osnoise_top_cpu *cpu_data;
66 int nr_cpus;
67 };
68
69 /*
70 * osnoise_free_top - free runtime data
71 */
72 static void
osnoise_free_top(struct osnoise_top_data * data)73 osnoise_free_top(struct osnoise_top_data *data)
74 {
75 free(data->cpu_data);
76 free(data);
77 }
78
79 /*
80 * osnoise_alloc_histogram - alloc runtime data
81 */
osnoise_alloc_top(int nr_cpus)82 static struct osnoise_top_data *osnoise_alloc_top(int nr_cpus)
83 {
84 struct osnoise_top_data *data;
85
86 data = calloc(1, sizeof(*data));
87 if (!data)
88 return NULL;
89
90 data->nr_cpus = nr_cpus;
91
92 /* one set of histograms per CPU */
93 data->cpu_data = calloc(1, sizeof(*data->cpu_data) * nr_cpus);
94 if (!data->cpu_data)
95 goto cleanup;
96
97 return data;
98
99 cleanup:
100 osnoise_free_top(data);
101 return NULL;
102 }
103
104 /*
105 * osnoise_top_handler - this is the handler for osnoise tracer events
106 */
107 static int
osnoise_top_handler(struct trace_seq * s,struct tep_record * record,struct tep_event * event,void * context)108 osnoise_top_handler(struct trace_seq *s, struct tep_record *record,
109 struct tep_event *event, void *context)
110 {
111 struct trace_instance *trace = context;
112 struct osnoise_tool *tool;
113 unsigned long long val;
114 struct osnoise_top_cpu *cpu_data;
115 struct osnoise_top_data *data;
116 int cpu = record->cpu;
117
118 tool = container_of(trace, struct osnoise_tool, trace);
119
120 data = tool->data;
121 cpu_data = &data->cpu_data[cpu];
122
123 cpu_data->sum_cycles++;
124
125 tep_get_field_val(s, event, "runtime", record, &val, 1);
126 update_sum(&cpu_data->sum_runtime, &val);
127
128 tep_get_field_val(s, event, "noise", record, &val, 1);
129 update_max(&cpu_data->max_noise, &val);
130 update_sum(&cpu_data->sum_noise, &val);
131
132 tep_get_field_val(s, event, "max_sample", record, &val, 1);
133 update_max(&cpu_data->max_sample, &val);
134
135 tep_get_field_val(s, event, "hw_count", record, &val, 1);
136 update_sum(&cpu_data->hw_count, &val);
137
138 tep_get_field_val(s, event, "nmi_count", record, &val, 1);
139 update_sum(&cpu_data->nmi_count, &val);
140
141 tep_get_field_val(s, event, "irq_count", record, &val, 1);
142 update_sum(&cpu_data->irq_count, &val);
143
144 tep_get_field_val(s, event, "softirq_count", record, &val, 1);
145 update_sum(&cpu_data->softirq_count, &val);
146
147 tep_get_field_val(s, event, "thread_count", record, &val, 1);
148 update_sum(&cpu_data->thread_count, &val);
149
150 return 0;
151 }
152
153 /*
154 * osnoise_top_header - print the header of the tool output
155 */
osnoise_top_header(struct osnoise_tool * top)156 static void osnoise_top_header(struct osnoise_tool *top)
157 {
158 struct osnoise_top_params *params = top->params;
159 struct trace_seq *s = top->trace.seq;
160 char duration[26];
161
162 get_duration(top->start_time, duration, sizeof(duration));
163
164 trace_seq_printf(s, "\033[2;37;40m");
165 trace_seq_printf(s, " ");
166
167 if (params->mode == MODE_OSNOISE) {
168 trace_seq_printf(s, "Operating System Noise");
169 trace_seq_printf(s, " ");
170 } else if (params->mode == MODE_HWNOISE) {
171 trace_seq_printf(s, "Hardware-related Noise");
172 }
173
174 trace_seq_printf(s, " ");
175 trace_seq_printf(s, "\033[0;0;0m");
176 trace_seq_printf(s, "\n");
177
178 trace_seq_printf(s, "duration: %9s | time is in us\n", duration);
179
180 trace_seq_printf(s, "\033[2;30;47m");
181 trace_seq_printf(s, "CPU Period Runtime ");
182 trace_seq_printf(s, " Noise ");
183 trace_seq_printf(s, " %% CPU Aval ");
184 trace_seq_printf(s, " Max Noise Max Single ");
185 trace_seq_printf(s, " HW NMI");
186
187 if (params->mode == MODE_HWNOISE)
188 goto eol;
189
190 trace_seq_printf(s, " IRQ Softirq Thread");
191
192 eol:
193 trace_seq_printf(s, "\033[0;0;0m");
194 trace_seq_printf(s, "\n");
195 }
196
197 /*
198 * clear_terminal - clears the output terminal
199 */
clear_terminal(struct trace_seq * seq)200 static void clear_terminal(struct trace_seq *seq)
201 {
202 if (!config_debug)
203 trace_seq_printf(seq, "\033c");
204 }
205
206 /*
207 * osnoise_top_print - prints the output of a given CPU
208 */
osnoise_top_print(struct osnoise_tool * tool,int cpu)209 static void osnoise_top_print(struct osnoise_tool *tool, int cpu)
210 {
211 struct osnoise_top_params *params = tool->params;
212 struct trace_seq *s = tool->trace.seq;
213 struct osnoise_top_cpu *cpu_data;
214 struct osnoise_top_data *data;
215 int percentage;
216 int decimal;
217
218 data = tool->data;
219 cpu_data = &data->cpu_data[cpu];
220
221 if (!cpu_data->sum_runtime)
222 return;
223
224 percentage = ((cpu_data->sum_runtime - cpu_data->sum_noise) * 10000000)
225 / cpu_data->sum_runtime;
226 decimal = percentage % 100000;
227 percentage = percentage / 100000;
228
229 trace_seq_printf(s, "%3d #%-6d %12llu ", cpu, cpu_data->sum_cycles, cpu_data->sum_runtime);
230 trace_seq_printf(s, "%12llu ", cpu_data->sum_noise);
231 trace_seq_printf(s, " %3d.%05d", percentage, decimal);
232 trace_seq_printf(s, "%12llu %12llu", cpu_data->max_noise, cpu_data->max_sample);
233
234 trace_seq_printf(s, "%12llu ", cpu_data->hw_count);
235 trace_seq_printf(s, "%12llu ", cpu_data->nmi_count);
236
237 if (params->mode == MODE_HWNOISE) {
238 trace_seq_printf(s, "\n");
239 return;
240 }
241
242 trace_seq_printf(s, "%12llu ", cpu_data->irq_count);
243 trace_seq_printf(s, "%12llu ", cpu_data->softirq_count);
244 trace_seq_printf(s, "%12llu\n", cpu_data->thread_count);
245 }
246
247 /*
248 * osnoise_print_stats - print data for all cpus
249 */
250 static void
osnoise_print_stats(struct osnoise_top_params * params,struct osnoise_tool * top)251 osnoise_print_stats(struct osnoise_top_params *params, struct osnoise_tool *top)
252 {
253 struct trace_instance *trace = &top->trace;
254 static int nr_cpus = -1;
255 int i;
256
257 if (nr_cpus == -1)
258 nr_cpus = sysconf(_SC_NPROCESSORS_CONF);
259
260 if (!params->quiet)
261 clear_terminal(trace->seq);
262
263 osnoise_top_header(top);
264
265 for (i = 0; i < nr_cpus; i++) {
266 if (params->cpus && !CPU_ISSET(i, ¶ms->monitored_cpus))
267 continue;
268 osnoise_top_print(top, i);
269 }
270
271 trace_seq_do_printf(trace->seq);
272 trace_seq_reset(trace->seq);
273 }
274
275 /*
276 * osnoise_top_usage - prints osnoise top usage message
277 */
osnoise_top_usage(struct osnoise_top_params * params,char * usage)278 static void osnoise_top_usage(struct osnoise_top_params *params, char *usage)
279 {
280 int i;
281
282 static const char * const msg[] = {
283 " [-h] [-q] [-D] [-d s] [-a us] [-p us] [-r us] [-s us] [-S us] \\",
284 " [-T us] [-t[=file]] [-e sys[:event]] [--filter <filter>] [--trigger <trigger>] \\",
285 " [-c cpu-list] [-H cpu-list] [-P priority] [-C[=cgroup_name]]",
286 "",
287 " -h/--help: print this menu",
288 " -a/--auto: set automatic trace mode, stopping the session if argument in us sample is hit",
289 " -p/--period us: osnoise period in us",
290 " -r/--runtime us: osnoise runtime in us",
291 " -s/--stop us: stop trace if a single sample is higher than the argument in us",
292 " -S/--stop-total us: stop trace if the total sample is higher than the argument in us",
293 " -T/--threshold us: the minimum delta to be considered a noise",
294 " -c/--cpus cpu-list: list of cpus to run osnoise threads",
295 " -H/--house-keeping cpus: run rtla control threads only on the given cpus",
296 " -C/--cgroup[=cgroup_name]: set cgroup, if no cgroup_name is passed, the rtla's cgroup will be inherited",
297 " -d/--duration time[s|m|h|d]: duration of the session",
298 " -D/--debug: print debug info",
299 " -t/--trace[=file]: save the stopped trace to [file|osnoise_trace.txt]",
300 " -e/--event <sys:event>: enable the <sys:event> in the trace instance, multiple -e are allowed",
301 " --filter <filter>: enable a trace event filter to the previous -e event",
302 " --trigger <trigger>: enable a trace event trigger to the previous -e event",
303 " -q/--quiet print only a summary at the end",
304 " -P/--priority o:prio|r:prio|f:prio|d:runtime:period : set scheduling parameters",
305 " o:prio - use SCHED_OTHER with prio",
306 " r:prio - use SCHED_RR with prio",
307 " f:prio - use SCHED_FIFO with prio",
308 " d:runtime[us|ms|s]:period[us|ms|s] - use SCHED_DEADLINE with runtime and period",
309 " in nanoseconds",
310 NULL,
311 };
312
313 if (usage)
314 fprintf(stderr, "%s\n", usage);
315
316 if (params->mode == MODE_OSNOISE) {
317 fprintf(stderr,
318 "rtla osnoise top: a per-cpu summary of the OS noise (version %s)\n",
319 VERSION);
320
321 fprintf(stderr, " usage: rtla osnoise [top]");
322 }
323
324 if (params->mode == MODE_HWNOISE) {
325 fprintf(stderr,
326 "rtla hwnoise: a summary of hardware-related noise (version %s)\n",
327 VERSION);
328
329 fprintf(stderr, " usage: rtla hwnoise");
330 }
331
332 for (i = 0; msg[i]; i++)
333 fprintf(stderr, "%s\n", msg[i]);
334 exit(1);
335 }
336
337 /*
338 * osnoise_top_parse_args - allocs, parse and fill the cmd line parameters
339 */
osnoise_top_parse_args(int argc,char ** argv)340 struct osnoise_top_params *osnoise_top_parse_args(int argc, char **argv)
341 {
342 struct osnoise_top_params *params;
343 struct trace_events *tevent;
344 int retval;
345 int c;
346
347 params = calloc(1, sizeof(*params));
348 if (!params)
349 exit(1);
350
351 if (strcmp(argv[0], "hwnoise") == 0) {
352 params->mode = MODE_HWNOISE;
353 /*
354 * Reduce CPU usage for 75% to avoid killing the system.
355 */
356 params->runtime = 750000;
357 params->period = 1000000;
358 }
359
360 while (1) {
361 static struct option long_options[] = {
362 {"auto", required_argument, 0, 'a'},
363 {"cpus", required_argument, 0, 'c'},
364 {"cgroup", optional_argument, 0, 'C'},
365 {"debug", no_argument, 0, 'D'},
366 {"duration", required_argument, 0, 'd'},
367 {"event", required_argument, 0, 'e'},
368 {"house-keeping", required_argument, 0, 'H'},
369 {"help", no_argument, 0, 'h'},
370 {"period", required_argument, 0, 'p'},
371 {"priority", required_argument, 0, 'P'},
372 {"quiet", no_argument, 0, 'q'},
373 {"runtime", required_argument, 0, 'r'},
374 {"stop", required_argument, 0, 's'},
375 {"stop-total", required_argument, 0, 'S'},
376 {"threshold", required_argument, 0, 'T'},
377 {"trace", optional_argument, 0, 't'},
378 {"trigger", required_argument, 0, '0'},
379 {"filter", required_argument, 0, '1'},
380 {0, 0, 0, 0}
381 };
382
383 /* getopt_long stores the option index here. */
384 int option_index = 0;
385
386 c = getopt_long(argc, argv, "a:c:C::d:De:hH:p:P:qr:s:S:t::T:0:1:",
387 long_options, &option_index);
388
389 /* Detect the end of the options. */
390 if (c == -1)
391 break;
392
393 switch (c) {
394 case 'a':
395 /* set sample stop to auto_thresh */
396 params->stop_us = get_llong_from_str(optarg);
397
398 /* set sample threshold to 1 */
399 params->threshold = 1;
400
401 /* set trace */
402 params->trace_output = "osnoise_trace.txt";
403
404 break;
405 case 'c':
406 retval = parse_cpu_set(optarg, ¶ms->monitored_cpus);
407 if (retval)
408 osnoise_top_usage(params, "\nInvalid -c cpu list\n");
409 params->cpus = optarg;
410 break;
411 case 'C':
412 params->cgroup = 1;
413 if (!optarg) {
414 /* will inherit this cgroup */
415 params->cgroup_name = NULL;
416 } else if (*optarg == '=') {
417 /* skip the = */
418 params->cgroup_name = ++optarg;
419 }
420 break;
421 case 'D':
422 config_debug = 1;
423 break;
424 case 'd':
425 params->duration = parse_seconds_duration(optarg);
426 if (!params->duration)
427 osnoise_top_usage(params, "Invalid -D duration\n");
428 break;
429 case 'e':
430 tevent = trace_event_alloc(optarg);
431 if (!tevent) {
432 err_msg("Error alloc trace event");
433 exit(EXIT_FAILURE);
434 }
435
436 if (params->events)
437 tevent->next = params->events;
438 params->events = tevent;
439
440 break;
441 case 'h':
442 case '?':
443 osnoise_top_usage(params, NULL);
444 break;
445 case 'H':
446 params->hk_cpus = 1;
447 retval = parse_cpu_set(optarg, ¶ms->hk_cpu_set);
448 if (retval) {
449 err_msg("Error parsing house keeping CPUs\n");
450 exit(EXIT_FAILURE);
451 }
452 break;
453 case 'p':
454 params->period = get_llong_from_str(optarg);
455 if (params->period > 10000000)
456 osnoise_top_usage(params, "Period longer than 10 s\n");
457 break;
458 case 'P':
459 retval = parse_prio(optarg, ¶ms->sched_param);
460 if (retval == -1)
461 osnoise_top_usage(params, "Invalid -P priority");
462 params->set_sched = 1;
463 break;
464 case 'q':
465 params->quiet = 1;
466 break;
467 case 'r':
468 params->runtime = get_llong_from_str(optarg);
469 if (params->runtime < 100)
470 osnoise_top_usage(params, "Runtime shorter than 100 us\n");
471 break;
472 case 's':
473 params->stop_us = get_llong_from_str(optarg);
474 break;
475 case 'S':
476 params->stop_total_us = get_llong_from_str(optarg);
477 break;
478 case 't':
479 if (optarg)
480 /* skip = */
481 params->trace_output = &optarg[1];
482 else
483 params->trace_output = "osnoise_trace.txt";
484 break;
485 case 'T':
486 params->threshold = get_llong_from_str(optarg);
487 break;
488 case '0': /* trigger */
489 if (params->events) {
490 retval = trace_event_add_trigger(params->events, optarg);
491 if (retval) {
492 err_msg("Error adding trigger %s\n", optarg);
493 exit(EXIT_FAILURE);
494 }
495 } else {
496 osnoise_top_usage(params, "--trigger requires a previous -e\n");
497 }
498 break;
499 case '1': /* filter */
500 if (params->events) {
501 retval = trace_event_add_filter(params->events, optarg);
502 if (retval) {
503 err_msg("Error adding filter %s\n", optarg);
504 exit(EXIT_FAILURE);
505 }
506 } else {
507 osnoise_top_usage(params, "--filter requires a previous -e\n");
508 }
509 break;
510 default:
511 osnoise_top_usage(params, "Invalid option");
512 }
513 }
514
515 if (geteuid()) {
516 err_msg("osnoise needs root permission\n");
517 exit(EXIT_FAILURE);
518 }
519
520 return params;
521 }
522
523 /*
524 * osnoise_top_apply_config - apply the top configs to the initialized tool
525 */
526 static int
osnoise_top_apply_config(struct osnoise_tool * tool,struct osnoise_top_params * params)527 osnoise_top_apply_config(struct osnoise_tool *tool, struct osnoise_top_params *params)
528 {
529 int retval;
530
531 if (!params->sleep_time)
532 params->sleep_time = 1;
533
534 if (params->cpus) {
535 retval = osnoise_set_cpus(tool->context, params->cpus);
536 if (retval) {
537 err_msg("Failed to apply CPUs config\n");
538 goto out_err;
539 }
540 }
541
542 if (params->runtime || params->period) {
543 retval = osnoise_set_runtime_period(tool->context,
544 params->runtime,
545 params->period);
546 if (retval) {
547 err_msg("Failed to set runtime and/or period\n");
548 goto out_err;
549 }
550 }
551
552 if (params->stop_us) {
553 retval = osnoise_set_stop_us(tool->context, params->stop_us);
554 if (retval) {
555 err_msg("Failed to set stop us\n");
556 goto out_err;
557 }
558 }
559
560 if (params->stop_total_us) {
561 retval = osnoise_set_stop_total_us(tool->context, params->stop_total_us);
562 if (retval) {
563 err_msg("Failed to set stop total us\n");
564 goto out_err;
565 }
566 }
567
568 if (params->threshold) {
569 retval = osnoise_set_tracing_thresh(tool->context, params->threshold);
570 if (retval) {
571 err_msg("Failed to set tracing_thresh\n");
572 goto out_err;
573 }
574 }
575
576 if (params->mode == MODE_HWNOISE) {
577 retval = osnoise_set_irq_disable(tool->context, 1);
578 if (retval) {
579 err_msg("Failed to set OSNOISE_IRQ_DISABLE option\n");
580 goto out_err;
581 }
582 }
583
584 if (params->hk_cpus) {
585 retval = sched_setaffinity(getpid(), sizeof(params->hk_cpu_set),
586 ¶ms->hk_cpu_set);
587 if (retval == -1) {
588 err_msg("Failed to set rtla to the house keeping CPUs\n");
589 goto out_err;
590 }
591 } else if (params->cpus) {
592 /*
593 * Even if the user do not set a house-keeping CPU, try to
594 * move rtla to a CPU set different to the one where the user
595 * set the workload to run.
596 *
597 * No need to check results as this is an automatic attempt.
598 */
599 auto_house_keeping(¶ms->monitored_cpus);
600 }
601
602 return 0;
603
604 out_err:
605 return -1;
606 }
607
608 /*
609 * osnoise_init_top - initialize a osnoise top tool with parameters
610 */
osnoise_init_top(struct osnoise_top_params * params)611 struct osnoise_tool *osnoise_init_top(struct osnoise_top_params *params)
612 {
613 struct osnoise_tool *tool;
614 int nr_cpus;
615
616 nr_cpus = sysconf(_SC_NPROCESSORS_CONF);
617
618 tool = osnoise_init_tool("osnoise_top");
619 if (!tool)
620 return NULL;
621
622 tool->data = osnoise_alloc_top(nr_cpus);
623 if (!tool->data)
624 goto out_err;
625
626 tool->params = params;
627
628 tep_register_event_handler(tool->trace.tep, -1, "ftrace", "osnoise",
629 osnoise_top_handler, NULL);
630
631 return tool;
632
633 out_err:
634 osnoise_free_top(tool->data);
635 osnoise_destroy_tool(tool);
636 return NULL;
637 }
638
639 static int stop_tracing;
stop_top(int sig)640 static void stop_top(int sig)
641 {
642 stop_tracing = 1;
643 }
644
645 /*
646 * osnoise_top_set_signals - handles the signal to stop the tool
647 */
osnoise_top_set_signals(struct osnoise_top_params * params)648 static void osnoise_top_set_signals(struct osnoise_top_params *params)
649 {
650 signal(SIGINT, stop_top);
651 if (params->duration) {
652 signal(SIGALRM, stop_top);
653 alarm(params->duration);
654 }
655 }
656
osnoise_top_main(int argc,char ** argv)657 int osnoise_top_main(int argc, char **argv)
658 {
659 struct osnoise_top_params *params;
660 struct osnoise_tool *record = NULL;
661 struct osnoise_tool *tool = NULL;
662 struct trace_instance *trace;
663 int return_value = 1;
664 int retval;
665
666 params = osnoise_top_parse_args(argc, argv);
667 if (!params)
668 exit(1);
669
670 tool = osnoise_init_top(params);
671 if (!tool) {
672 err_msg("Could not init osnoise top\n");
673 goto out_exit;
674 }
675
676 retval = osnoise_top_apply_config(tool, params);
677 if (retval) {
678 err_msg("Could not apply config\n");
679 goto out_free;
680 }
681
682 trace = &tool->trace;
683
684 retval = enable_osnoise(trace);
685 if (retval) {
686 err_msg("Failed to enable osnoise tracer\n");
687 goto out_free;
688 }
689
690 if (params->set_sched) {
691 retval = set_comm_sched_attr("osnoise/", ¶ms->sched_param);
692 if (retval) {
693 err_msg("Failed to set sched parameters\n");
694 goto out_free;
695 }
696 }
697
698 if (params->cgroup) {
699 retval = set_comm_cgroup("osnoise/", params->cgroup_name);
700 if (!retval) {
701 err_msg("Failed to move threads to cgroup\n");
702 goto out_free;
703 }
704 }
705
706 if (params->trace_output) {
707 record = osnoise_init_trace_tool("osnoise");
708 if (!record) {
709 err_msg("Failed to enable the trace instance\n");
710 goto out_free;
711 }
712
713 if (params->events) {
714 retval = trace_events_enable(&record->trace, params->events);
715 if (retval)
716 goto out_top;
717 }
718 }
719
720 /*
721 * Start the tracer here, after having set all instances.
722 *
723 * Let the trace instance start first for the case of hitting a stop
724 * tracing while enabling other instances. The trace instance is the
725 * one with most valuable information.
726 */
727 if (params->trace_output)
728 trace_instance_start(&record->trace);
729 trace_instance_start(trace);
730
731 tool->start_time = time(NULL);
732 osnoise_top_set_signals(params);
733
734 while (!stop_tracing) {
735 sleep(params->sleep_time);
736
737 retval = tracefs_iterate_raw_events(trace->tep,
738 trace->inst,
739 NULL,
740 0,
741 collect_registered_events,
742 trace);
743 if (retval < 0) {
744 err_msg("Error iterating on events\n");
745 goto out_top;
746 }
747
748 if (!params->quiet)
749 osnoise_print_stats(params, tool);
750
751 if (trace_is_off(&tool->trace, &record->trace))
752 break;
753
754 }
755
756 osnoise_print_stats(params, tool);
757
758 return_value = 0;
759
760 if (trace_is_off(&tool->trace, &record->trace)) {
761 printf("osnoise hit stop tracing\n");
762 if (params->trace_output) {
763 printf(" Saving trace to %s\n", params->trace_output);
764 save_trace_to_file(record->trace.inst, params->trace_output);
765 }
766 }
767
768 out_top:
769 trace_events_destroy(&record->trace, params->events);
770 params->events = NULL;
771 out_free:
772 osnoise_free_top(tool->data);
773 osnoise_destroy_tool(record);
774 osnoise_destroy_tool(tool);
775 free(params);
776 out_exit:
777 exit(return_value);
778 }
779
