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
335 if (usage)
336 exit(EXIT_FAILURE);
337
338 exit(EXIT_SUCCESS);
339 }
340
341 /*
342 * osnoise_top_parse_args - allocs, parse and fill the cmd line parameters
343 */
osnoise_top_parse_args(int argc,char ** argv)344 struct osnoise_top_params *osnoise_top_parse_args(int argc, char **argv)
345 {
346 struct osnoise_top_params *params;
347 struct trace_events *tevent;
348 int retval;
349 int c;
350
351 params = calloc(1, sizeof(*params));
352 if (!params)
353 exit(1);
354
355 if (strcmp(argv[0], "hwnoise") == 0) {
356 params->mode = MODE_HWNOISE;
357 /*
358 * Reduce CPU usage for 75% to avoid killing the system.
359 */
360 params->runtime = 750000;
361 params->period = 1000000;
362 }
363
364 while (1) {
365 static struct option long_options[] = {
366 {"auto", required_argument, 0, 'a'},
367 {"cpus", required_argument, 0, 'c'},
368 {"cgroup", optional_argument, 0, 'C'},
369 {"debug", no_argument, 0, 'D'},
370 {"duration", required_argument, 0, 'd'},
371 {"event", required_argument, 0, 'e'},
372 {"house-keeping", required_argument, 0, 'H'},
373 {"help", no_argument, 0, 'h'},
374 {"period", required_argument, 0, 'p'},
375 {"priority", required_argument, 0, 'P'},
376 {"quiet", no_argument, 0, 'q'},
377 {"runtime", required_argument, 0, 'r'},
378 {"stop", required_argument, 0, 's'},
379 {"stop-total", required_argument, 0, 'S'},
380 {"threshold", required_argument, 0, 'T'},
381 {"trace", optional_argument, 0, 't'},
382 {"trigger", required_argument, 0, '0'},
383 {"filter", required_argument, 0, '1'},
384 {0, 0, 0, 0}
385 };
386
387 /* getopt_long stores the option index here. */
388 int option_index = 0;
389
390 c = getopt_long(argc, argv, "a:c:C::d:De:hH:p:P:qr:s:S:t::T:0:1:",
391 long_options, &option_index);
392
393 /* Detect the end of the options. */
394 if (c == -1)
395 break;
396
397 switch (c) {
398 case 'a':
399 /* set sample stop to auto_thresh */
400 params->stop_us = get_llong_from_str(optarg);
401
402 /* set sample threshold to 1 */
403 params->threshold = 1;
404
405 /* set trace */
406 params->trace_output = "osnoise_trace.txt";
407
408 break;
409 case 'c':
410 retval = parse_cpu_set(optarg, ¶ms->monitored_cpus);
411 if (retval)
412 osnoise_top_usage(params, "\nInvalid -c cpu list\n");
413 params->cpus = optarg;
414 break;
415 case 'C':
416 params->cgroup = 1;
417 if (!optarg) {
418 /* will inherit this cgroup */
419 params->cgroup_name = NULL;
420 } else if (*optarg == '=') {
421 /* skip the = */
422 params->cgroup_name = ++optarg;
423 }
424 break;
425 case 'D':
426 config_debug = 1;
427 break;
428 case 'd':
429 params->duration = parse_seconds_duration(optarg);
430 if (!params->duration)
431 osnoise_top_usage(params, "Invalid -D duration\n");
432 break;
433 case 'e':
434 tevent = trace_event_alloc(optarg);
435 if (!tevent) {
436 err_msg("Error alloc trace event");
437 exit(EXIT_FAILURE);
438 }
439
440 if (params->events)
441 tevent->next = params->events;
442 params->events = tevent;
443
444 break;
445 case 'h':
446 case '?':
447 osnoise_top_usage(params, NULL);
448 break;
449 case 'H':
450 params->hk_cpus = 1;
451 retval = parse_cpu_set(optarg, ¶ms->hk_cpu_set);
452 if (retval) {
453 err_msg("Error parsing house keeping CPUs\n");
454 exit(EXIT_FAILURE);
455 }
456 break;
457 case 'p':
458 params->period = get_llong_from_str(optarg);
459 if (params->period > 10000000)
460 osnoise_top_usage(params, "Period longer than 10 s\n");
461 break;
462 case 'P':
463 retval = parse_prio(optarg, ¶ms->sched_param);
464 if (retval == -1)
465 osnoise_top_usage(params, "Invalid -P priority");
466 params->set_sched = 1;
467 break;
468 case 'q':
469 params->quiet = 1;
470 break;
471 case 'r':
472 params->runtime = get_llong_from_str(optarg);
473 if (params->runtime < 100)
474 osnoise_top_usage(params, "Runtime shorter than 100 us\n");
475 break;
476 case 's':
477 params->stop_us = get_llong_from_str(optarg);
478 break;
479 case 'S':
480 params->stop_total_us = get_llong_from_str(optarg);
481 break;
482 case 't':
483 if (optarg)
484 /* skip = */
485 params->trace_output = &optarg[1];
486 else
487 params->trace_output = "osnoise_trace.txt";
488 break;
489 case 'T':
490 params->threshold = get_llong_from_str(optarg);
491 break;
492 case '0': /* trigger */
493 if (params->events) {
494 retval = trace_event_add_trigger(params->events, optarg);
495 if (retval) {
496 err_msg("Error adding trigger %s\n", optarg);
497 exit(EXIT_FAILURE);
498 }
499 } else {
500 osnoise_top_usage(params, "--trigger requires a previous -e\n");
501 }
502 break;
503 case '1': /* filter */
504 if (params->events) {
505 retval = trace_event_add_filter(params->events, optarg);
506 if (retval) {
507 err_msg("Error adding filter %s\n", optarg);
508 exit(EXIT_FAILURE);
509 }
510 } else {
511 osnoise_top_usage(params, "--filter requires a previous -e\n");
512 }
513 break;
514 default:
515 osnoise_top_usage(params, "Invalid option");
516 }
517 }
518
519 if (geteuid()) {
520 err_msg("osnoise needs root permission\n");
521 exit(EXIT_FAILURE);
522 }
523
524 return params;
525 }
526
527 /*
528 * osnoise_top_apply_config - apply the top configs to the initialized tool
529 */
530 static int
osnoise_top_apply_config(struct osnoise_tool * tool,struct osnoise_top_params * params)531 osnoise_top_apply_config(struct osnoise_tool *tool, struct osnoise_top_params *params)
532 {
533 int retval;
534
535 if (!params->sleep_time)
536 params->sleep_time = 1;
537
538 if (params->cpus) {
539 retval = osnoise_set_cpus(tool->context, params->cpus);
540 if (retval) {
541 err_msg("Failed to apply CPUs config\n");
542 goto out_err;
543 }
544 }
545
546 if (params->runtime || params->period) {
547 retval = osnoise_set_runtime_period(tool->context,
548 params->runtime,
549 params->period);
550 if (retval) {
551 err_msg("Failed to set runtime and/or period\n");
552 goto out_err;
553 }
554 }
555
556 if (params->stop_us) {
557 retval = osnoise_set_stop_us(tool->context, params->stop_us);
558 if (retval) {
559 err_msg("Failed to set stop us\n");
560 goto out_err;
561 }
562 }
563
564 if (params->stop_total_us) {
565 retval = osnoise_set_stop_total_us(tool->context, params->stop_total_us);
566 if (retval) {
567 err_msg("Failed to set stop total us\n");
568 goto out_err;
569 }
570 }
571
572 if (params->threshold) {
573 retval = osnoise_set_tracing_thresh(tool->context, params->threshold);
574 if (retval) {
575 err_msg("Failed to set tracing_thresh\n");
576 goto out_err;
577 }
578 }
579
580 if (params->mode == MODE_HWNOISE) {
581 retval = osnoise_set_irq_disable(tool->context, 1);
582 if (retval) {
583 err_msg("Failed to set OSNOISE_IRQ_DISABLE option\n");
584 goto out_err;
585 }
586 }
587
588 if (params->hk_cpus) {
589 retval = sched_setaffinity(getpid(), sizeof(params->hk_cpu_set),
590 ¶ms->hk_cpu_set);
591 if (retval == -1) {
592 err_msg("Failed to set rtla to the house keeping CPUs\n");
593 goto out_err;
594 }
595 } else if (params->cpus) {
596 /*
597 * Even if the user do not set a house-keeping CPU, try to
598 * move rtla to a CPU set different to the one where the user
599 * set the workload to run.
600 *
601 * No need to check results as this is an automatic attempt.
602 */
603 auto_house_keeping(¶ms->monitored_cpus);
604 }
605
606 return 0;
607
608 out_err:
609 return -1;
610 }
611
612 /*
613 * osnoise_init_top - initialize a osnoise top tool with parameters
614 */
osnoise_init_top(struct osnoise_top_params * params)615 struct osnoise_tool *osnoise_init_top(struct osnoise_top_params *params)
616 {
617 struct osnoise_tool *tool;
618 int nr_cpus;
619
620 nr_cpus = sysconf(_SC_NPROCESSORS_CONF);
621
622 tool = osnoise_init_tool("osnoise_top");
623 if (!tool)
624 return NULL;
625
626 tool->data = osnoise_alloc_top(nr_cpus);
627 if (!tool->data)
628 goto out_err;
629
630 tool->params = params;
631
632 tep_register_event_handler(tool->trace.tep, -1, "ftrace", "osnoise",
633 osnoise_top_handler, NULL);
634
635 return tool;
636
637 out_err:
638 osnoise_free_top(tool->data);
639 osnoise_destroy_tool(tool);
640 return NULL;
641 }
642
643 static int stop_tracing;
stop_top(int sig)644 static void stop_top(int sig)
645 {
646 stop_tracing = 1;
647 }
648
649 /*
650 * osnoise_top_set_signals - handles the signal to stop the tool
651 */
osnoise_top_set_signals(struct osnoise_top_params * params)652 static void osnoise_top_set_signals(struct osnoise_top_params *params)
653 {
654 signal(SIGINT, stop_top);
655 if (params->duration) {
656 signal(SIGALRM, stop_top);
657 alarm(params->duration);
658 }
659 }
660
osnoise_top_main(int argc,char ** argv)661 int osnoise_top_main(int argc, char **argv)
662 {
663 struct osnoise_top_params *params;
664 struct osnoise_tool *record = NULL;
665 struct osnoise_tool *tool = NULL;
666 struct trace_instance *trace;
667 int return_value = 1;
668 int retval;
669
670 params = osnoise_top_parse_args(argc, argv);
671 if (!params)
672 exit(1);
673
674 tool = osnoise_init_top(params);
675 if (!tool) {
676 err_msg("Could not init osnoise top\n");
677 goto out_exit;
678 }
679
680 retval = osnoise_top_apply_config(tool, params);
681 if (retval) {
682 err_msg("Could not apply config\n");
683 goto out_free;
684 }
685
686 trace = &tool->trace;
687
688 retval = enable_osnoise(trace);
689 if (retval) {
690 err_msg("Failed to enable osnoise tracer\n");
691 goto out_free;
692 }
693
694 if (params->set_sched) {
695 retval = set_comm_sched_attr("osnoise/", ¶ms->sched_param);
696 if (retval) {
697 err_msg("Failed to set sched parameters\n");
698 goto out_free;
699 }
700 }
701
702 if (params->cgroup) {
703 retval = set_comm_cgroup("osnoise/", params->cgroup_name);
704 if (!retval) {
705 err_msg("Failed to move threads to cgroup\n");
706 goto out_free;
707 }
708 }
709
710 if (params->trace_output) {
711 record = osnoise_init_trace_tool("osnoise");
712 if (!record) {
713 err_msg("Failed to enable the trace instance\n");
714 goto out_free;
715 }
716
717 if (params->events) {
718 retval = trace_events_enable(&record->trace, params->events);
719 if (retval)
720 goto out_top;
721 }
722 }
723
724 /*
725 * Start the tracer here, after having set all instances.
726 *
727 * Let the trace instance start first for the case of hitting a stop
728 * tracing while enabling other instances. The trace instance is the
729 * one with most valuable information.
730 */
731 if (params->trace_output)
732 trace_instance_start(&record->trace);
733 trace_instance_start(trace);
734
735 tool->start_time = time(NULL);
736 osnoise_top_set_signals(params);
737
738 while (!stop_tracing) {
739 sleep(params->sleep_time);
740
741 retval = tracefs_iterate_raw_events(trace->tep,
742 trace->inst,
743 NULL,
744 0,
745 collect_registered_events,
746 trace);
747 if (retval < 0) {
748 err_msg("Error iterating on events\n");
749 goto out_top;
750 }
751
752 if (!params->quiet)
753 osnoise_print_stats(params, tool);
754
755 if (trace_is_off(&tool->trace, &record->trace))
756 break;
757
758 }
759
760 osnoise_print_stats(params, tool);
761
762 return_value = 0;
763
764 if (trace_is_off(&tool->trace, &record->trace)) {
765 printf("osnoise hit stop tracing\n");
766 if (params->trace_output) {
767 printf(" Saving trace to %s\n", params->trace_output);
768 save_trace_to_file(record->trace.inst, params->trace_output);
769 }
770 }
771
772 out_top:
773 trace_events_destroy(&record->trace, params->events);
774 params->events = NULL;
775 out_free:
776 osnoise_free_top(tool->data);
777 osnoise_destroy_tool(record);
778 osnoise_destroy_tool(tool);
779 free(params);
780 out_exit:
781 exit(return_value);
782 }
783