Commit | Line | Data |
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0a02ad93 | 1 | #include "builtin.h" |
b1ffe8f3 | 2 | #include "perf.h" |
0a02ad93 IM |
3 | |
4 | #include "util/util.h" | |
5 | #include "util/cache.h" | |
6 | #include "util/symbol.h" | |
7 | #include "util/thread.h" | |
8 | #include "util/header.h" | |
9 | ||
10 | #include "util/parse-options.h" | |
b1ffe8f3 | 11 | #include "util/trace-event.h" |
0a02ad93 | 12 | |
0a02ad93 IM |
13 | #include "util/debug.h" |
14 | ||
ec156764 | 15 | #include <sys/types.h> |
b1ffe8f3 | 16 | #include <sys/prctl.h> |
0a02ad93 | 17 | |
b1ffe8f3 IM |
18 | #include <semaphore.h> |
19 | #include <pthread.h> | |
20 | #include <math.h> | |
419ab0d6 | 21 | |
ec156764 IM |
22 | static char const *input_name = "perf.data"; |
23 | static int input; | |
24 | static unsigned long page_size; | |
25 | static unsigned long mmap_window = 32; | |
0a02ad93 | 26 | |
ec156764 | 27 | static unsigned long total_comm = 0; |
0a02ad93 | 28 | |
ec156764 IM |
29 | static struct rb_root threads; |
30 | static struct thread *last_match; | |
0a02ad93 | 31 | |
ec156764 IM |
32 | static struct perf_header *header; |
33 | static u64 sample_type; | |
0a02ad93 | 34 | |
daa1d7a5 FW |
35 | static char default_sort_order[] = "avg, max, switch, runtime"; |
36 | static char *sort_order = default_sort_order; | |
37 | ||
b1ffe8f3 IM |
38 | #define PR_SET_NAME 15 /* Set process name */ |
39 | #define MAX_CPUS 4096 | |
0a02ad93 | 40 | |
b1ffe8f3 | 41 | #define BUG_ON(x) assert(!(x)) |
ec156764 | 42 | |
b1ffe8f3 IM |
43 | static u64 run_measurement_overhead; |
44 | static u64 sleep_measurement_overhead; | |
ec156764 | 45 | |
b1ffe8f3 IM |
46 | #define COMM_LEN 20 |
47 | #define SYM_LEN 129 | |
ec156764 | 48 | |
b1ffe8f3 | 49 | #define MAX_PID 65536 |
ec156764 | 50 | |
b1ffe8f3 | 51 | static unsigned long nr_tasks; |
ec156764 | 52 | |
b1ffe8f3 | 53 | struct sched_event; |
ec156764 | 54 | |
b1ffe8f3 IM |
55 | struct task_desc { |
56 | unsigned long nr; | |
57 | unsigned long pid; | |
58 | char comm[COMM_LEN]; | |
ec156764 | 59 | |
b1ffe8f3 IM |
60 | unsigned long nr_events; |
61 | unsigned long curr_event; | |
62 | struct sched_event **events; | |
63 | ||
64 | pthread_t thread; | |
65 | sem_t sleep_sem; | |
ec156764 | 66 | |
b1ffe8f3 IM |
67 | sem_t ready_for_work; |
68 | sem_t work_done_sem; | |
69 | ||
70 | u64 cpu_usage; | |
71 | }; | |
72 | ||
73 | enum sched_event_type { | |
74 | SCHED_EVENT_RUN, | |
75 | SCHED_EVENT_SLEEP, | |
76 | SCHED_EVENT_WAKEUP, | |
77 | }; | |
78 | ||
79 | struct sched_event { | |
80 | enum sched_event_type type; | |
81 | u64 timestamp; | |
82 | u64 duration; | |
83 | unsigned long nr; | |
84 | int specific_wait; | |
85 | sem_t *wait_sem; | |
86 | struct task_desc *wakee; | |
87 | }; | |
88 | ||
89 | static struct task_desc *pid_to_task[MAX_PID]; | |
90 | ||
91 | static struct task_desc **tasks; | |
92 | ||
93 | static pthread_mutex_t start_work_mutex = PTHREAD_MUTEX_INITIALIZER; | |
94 | static u64 start_time; | |
95 | ||
96 | static pthread_mutex_t work_done_wait_mutex = PTHREAD_MUTEX_INITIALIZER; | |
ec156764 | 97 | |
b1ffe8f3 IM |
98 | static unsigned long nr_run_events; |
99 | static unsigned long nr_sleep_events; | |
100 | static unsigned long nr_wakeup_events; | |
101 | ||
102 | static unsigned long nr_sleep_corrections; | |
103 | static unsigned long nr_run_events_optimized; | |
104 | ||
105 | static unsigned long targetless_wakeups; | |
106 | static unsigned long multitarget_wakeups; | |
107 | ||
108 | static u64 cpu_usage; | |
109 | static u64 runavg_cpu_usage; | |
110 | static u64 parent_cpu_usage; | |
111 | static u64 runavg_parent_cpu_usage; | |
112 | ||
113 | static unsigned long nr_runs; | |
114 | static u64 sum_runtime; | |
115 | static u64 sum_fluct; | |
116 | static u64 run_avg; | |
117 | ||
118 | static unsigned long replay_repeat = 10; | |
119 | ||
120 | #define TASK_STATE_TO_CHAR_STR "RSDTtZX" | |
121 | ||
122 | enum thread_state { | |
123 | THREAD_SLEEPING = 0, | |
124 | THREAD_WAIT_CPU, | |
125 | THREAD_SCHED_IN, | |
126 | THREAD_IGNORE | |
127 | }; | |
128 | ||
129 | struct work_atom { | |
130 | struct list_head list; | |
131 | enum thread_state state; | |
132 | u64 wake_up_time; | |
133 | u64 sched_in_time; | |
134 | u64 runtime; | |
135 | }; | |
136 | ||
137 | struct task_atoms { | |
138 | struct list_head atom_list; | |
139 | struct thread *thread; | |
140 | struct rb_node node; | |
141 | u64 max_lat; | |
142 | u64 total_lat; | |
143 | u64 nb_atoms; | |
144 | u64 total_runtime; | |
145 | }; | |
146 | ||
b5fae128 | 147 | typedef int (*sort_fn_t)(struct task_atoms *, struct task_atoms *); |
b1ffe8f3 IM |
148 | |
149 | static struct rb_root atom_root, sorted_atom_root; | |
150 | ||
151 | static u64 all_runtime; | |
152 | static u64 all_count; | |
153 | ||
154 | static int read_events(void); | |
155 | ||
156 | ||
157 | static u64 get_nsecs(void) | |
ec156764 IM |
158 | { |
159 | struct timespec ts; | |
160 | ||
161 | clock_gettime(CLOCK_MONOTONIC, &ts); | |
162 | ||
163 | return ts.tv_sec * 1000000000ULL + ts.tv_nsec; | |
164 | } | |
165 | ||
b1ffe8f3 | 166 | static void burn_nsecs(u64 nsecs) |
ec156764 | 167 | { |
b1ffe8f3 | 168 | u64 T0 = get_nsecs(), T1; |
ec156764 IM |
169 | |
170 | do { | |
171 | T1 = get_nsecs(); | |
172 | } while (T1 + run_measurement_overhead < T0 + nsecs); | |
173 | } | |
174 | ||
b1ffe8f3 | 175 | static void sleep_nsecs(u64 nsecs) |
ec156764 IM |
176 | { |
177 | struct timespec ts; | |
178 | ||
179 | ts.tv_nsec = nsecs % 999999999; | |
180 | ts.tv_sec = nsecs / 999999999; | |
181 | ||
182 | nanosleep(&ts, NULL); | |
183 | } | |
184 | ||
185 | static void calibrate_run_measurement_overhead(void) | |
186 | { | |
b1ffe8f3 | 187 | u64 T0, T1, delta, min_delta = 1000000000ULL; |
ec156764 IM |
188 | int i; |
189 | ||
190 | for (i = 0; i < 10; i++) { | |
191 | T0 = get_nsecs(); | |
192 | burn_nsecs(0); | |
193 | T1 = get_nsecs(); | |
194 | delta = T1-T0; | |
195 | min_delta = min(min_delta, delta); | |
196 | } | |
197 | run_measurement_overhead = min_delta; | |
198 | ||
ad236fd2 | 199 | printf("run measurement overhead: %Ld nsecs\n", min_delta); |
ec156764 IM |
200 | } |
201 | ||
202 | static void calibrate_sleep_measurement_overhead(void) | |
203 | { | |
b1ffe8f3 | 204 | u64 T0, T1, delta, min_delta = 1000000000ULL; |
ec156764 IM |
205 | int i; |
206 | ||
207 | for (i = 0; i < 10; i++) { | |
208 | T0 = get_nsecs(); | |
209 | sleep_nsecs(10000); | |
210 | T1 = get_nsecs(); | |
211 | delta = T1-T0; | |
212 | min_delta = min(min_delta, delta); | |
213 | } | |
214 | min_delta -= 10000; | |
215 | sleep_measurement_overhead = min_delta; | |
216 | ||
ad236fd2 | 217 | printf("sleep measurement overhead: %Ld nsecs\n", min_delta); |
ec156764 IM |
218 | } |
219 | ||
ec156764 | 220 | static struct sched_event * |
b1ffe8f3 | 221 | get_new_event(struct task_desc *task, u64 timestamp) |
ec156764 IM |
222 | { |
223 | struct sched_event *event = calloc(1, sizeof(*event)); | |
224 | unsigned long idx = task->nr_events; | |
225 | size_t size; | |
226 | ||
227 | event->timestamp = timestamp; | |
228 | event->nr = idx; | |
229 | ||
230 | task->nr_events++; | |
231 | size = sizeof(struct sched_event *) * task->nr_events; | |
232 | task->events = realloc(task->events, size); | |
233 | BUG_ON(!task->events); | |
234 | ||
235 | task->events[idx] = event; | |
236 | ||
237 | return event; | |
238 | } | |
239 | ||
240 | static struct sched_event *last_event(struct task_desc *task) | |
241 | { | |
242 | if (!task->nr_events) | |
243 | return NULL; | |
244 | ||
245 | return task->events[task->nr_events - 1]; | |
246 | } | |
247 | ||
248 | static void | |
b1ffe8f3 | 249 | add_sched_event_run(struct task_desc *task, u64 timestamp, u64 duration) |
ec156764 IM |
250 | { |
251 | struct sched_event *event, *curr_event = last_event(task); | |
252 | ||
253 | /* | |
fbf94829 IM |
254 | * optimize an existing RUN event by merging this one |
255 | * to it: | |
256 | */ | |
ec156764 IM |
257 | if (curr_event && curr_event->type == SCHED_EVENT_RUN) { |
258 | nr_run_events_optimized++; | |
259 | curr_event->duration += duration; | |
260 | return; | |
261 | } | |
262 | ||
263 | event = get_new_event(task, timestamp); | |
264 | ||
265 | event->type = SCHED_EVENT_RUN; | |
266 | event->duration = duration; | |
267 | ||
268 | nr_run_events++; | |
269 | } | |
270 | ||
ec156764 | 271 | static void |
b1ffe8f3 | 272 | add_sched_event_wakeup(struct task_desc *task, u64 timestamp, |
ec156764 IM |
273 | struct task_desc *wakee) |
274 | { | |
275 | struct sched_event *event, *wakee_event; | |
276 | ||
277 | event = get_new_event(task, timestamp); | |
278 | event->type = SCHED_EVENT_WAKEUP; | |
279 | event->wakee = wakee; | |
280 | ||
281 | wakee_event = last_event(wakee); | |
282 | if (!wakee_event || wakee_event->type != SCHED_EVENT_SLEEP) { | |
283 | targetless_wakeups++; | |
284 | return; | |
285 | } | |
286 | if (wakee_event->wait_sem) { | |
287 | multitarget_wakeups++; | |
288 | return; | |
289 | } | |
290 | ||
291 | wakee_event->wait_sem = calloc(1, sizeof(*wakee_event->wait_sem)); | |
292 | sem_init(wakee_event->wait_sem, 0, 0); | |
293 | wakee_event->specific_wait = 1; | |
294 | event->wait_sem = wakee_event->wait_sem; | |
295 | ||
296 | nr_wakeup_events++; | |
297 | } | |
298 | ||
299 | static void | |
b1ffe8f3 | 300 | add_sched_event_sleep(struct task_desc *task, u64 timestamp, |
ad236fd2 | 301 | u64 task_state __used) |
ec156764 IM |
302 | { |
303 | struct sched_event *event = get_new_event(task, timestamp); | |
304 | ||
305 | event->type = SCHED_EVENT_SLEEP; | |
306 | ||
307 | nr_sleep_events++; | |
308 | } | |
309 | ||
310 | static struct task_desc *register_pid(unsigned long pid, const char *comm) | |
311 | { | |
312 | struct task_desc *task; | |
313 | ||
314 | BUG_ON(pid >= MAX_PID); | |
315 | ||
316 | task = pid_to_task[pid]; | |
317 | ||
318 | if (task) | |
319 | return task; | |
320 | ||
321 | task = calloc(1, sizeof(*task)); | |
322 | task->pid = pid; | |
323 | task->nr = nr_tasks; | |
324 | strcpy(task->comm, comm); | |
325 | /* | |
326 | * every task starts in sleeping state - this gets ignored | |
327 | * if there's no wakeup pointing to this sleep state: | |
328 | */ | |
329 | add_sched_event_sleep(task, 0, 0); | |
330 | ||
331 | pid_to_task[pid] = task; | |
332 | nr_tasks++; | |
333 | tasks = realloc(tasks, nr_tasks*sizeof(struct task_task *)); | |
334 | BUG_ON(!tasks); | |
335 | tasks[task->nr] = task; | |
336 | ||
ad236fd2 IM |
337 | if (verbose) |
338 | printf("registered task #%ld, PID %ld (%s)\n", nr_tasks, pid, comm); | |
ec156764 IM |
339 | |
340 | return task; | |
341 | } | |
342 | ||
343 | ||
ec156764 IM |
344 | static void print_task_traces(void) |
345 | { | |
346 | struct task_desc *task; | |
347 | unsigned long i; | |
348 | ||
349 | for (i = 0; i < nr_tasks; i++) { | |
350 | task = tasks[i]; | |
ad236fd2 | 351 | printf("task %6ld (%20s:%10ld), nr_events: %ld\n", |
ec156764 IM |
352 | task->nr, task->comm, task->pid, task->nr_events); |
353 | } | |
354 | } | |
355 | ||
356 | static void add_cross_task_wakeups(void) | |
357 | { | |
358 | struct task_desc *task1, *task2; | |
359 | unsigned long i, j; | |
360 | ||
361 | for (i = 0; i < nr_tasks; i++) { | |
362 | task1 = tasks[i]; | |
363 | j = i + 1; | |
364 | if (j == nr_tasks) | |
365 | j = 0; | |
366 | task2 = tasks[j]; | |
367 | add_sched_event_wakeup(task1, 0, task2); | |
368 | } | |
369 | } | |
370 | ||
371 | static void | |
fbf94829 | 372 | process_sched_event(struct task_desc *this_task __used, struct sched_event *event) |
ec156764 IM |
373 | { |
374 | int ret = 0; | |
b1ffe8f3 | 375 | u64 now; |
ec156764 IM |
376 | long long delta; |
377 | ||
378 | now = get_nsecs(); | |
379 | delta = start_time + event->timestamp - now; | |
380 | ||
ec156764 IM |
381 | switch (event->type) { |
382 | case SCHED_EVENT_RUN: | |
ec156764 IM |
383 | burn_nsecs(event->duration); |
384 | break; | |
385 | case SCHED_EVENT_SLEEP: | |
ec156764 IM |
386 | if (event->wait_sem) |
387 | ret = sem_wait(event->wait_sem); | |
388 | BUG_ON(ret); | |
389 | break; | |
390 | case SCHED_EVENT_WAKEUP: | |
ec156764 IM |
391 | if (event->wait_sem) |
392 | ret = sem_post(event->wait_sem); | |
393 | BUG_ON(ret); | |
394 | break; | |
395 | default: | |
396 | BUG_ON(1); | |
397 | } | |
398 | } | |
399 | ||
b1ffe8f3 | 400 | static u64 get_cpu_usage_nsec_parent(void) |
ec156764 IM |
401 | { |
402 | struct rusage ru; | |
b1ffe8f3 | 403 | u64 sum; |
ec156764 IM |
404 | int err; |
405 | ||
406 | err = getrusage(RUSAGE_SELF, &ru); | |
407 | BUG_ON(err); | |
408 | ||
409 | sum = ru.ru_utime.tv_sec*1e9 + ru.ru_utime.tv_usec*1e3; | |
410 | sum += ru.ru_stime.tv_sec*1e9 + ru.ru_stime.tv_usec*1e3; | |
411 | ||
412 | return sum; | |
413 | } | |
414 | ||
b1ffe8f3 | 415 | static u64 get_cpu_usage_nsec_self(void) |
ec156764 IM |
416 | { |
417 | char filename [] = "/proc/1234567890/sched"; | |
418 | unsigned long msecs, nsecs; | |
419 | char *line = NULL; | |
b1ffe8f3 | 420 | u64 total = 0; |
ec156764 IM |
421 | size_t len = 0; |
422 | ssize_t chars; | |
423 | FILE *file; | |
424 | int ret; | |
425 | ||
426 | sprintf(filename, "/proc/%d/sched", getpid()); | |
427 | file = fopen(filename, "r"); | |
428 | BUG_ON(!file); | |
429 | ||
430 | while ((chars = getline(&line, &len, file)) != -1) { | |
ec156764 IM |
431 | ret = sscanf(line, "se.sum_exec_runtime : %ld.%06ld\n", |
432 | &msecs, &nsecs); | |
433 | if (ret == 2) { | |
434 | total = msecs*1e6 + nsecs; | |
ec156764 IM |
435 | break; |
436 | } | |
437 | } | |
438 | if (line) | |
439 | free(line); | |
440 | fclose(file); | |
441 | ||
442 | return total; | |
443 | } | |
444 | ||
445 | static void *thread_func(void *ctx) | |
446 | { | |
447 | struct task_desc *this_task = ctx; | |
b1ffe8f3 | 448 | u64 cpu_usage_0, cpu_usage_1; |
ec156764 IM |
449 | unsigned long i, ret; |
450 | char comm2[22]; | |
451 | ||
ec156764 IM |
452 | sprintf(comm2, ":%s", this_task->comm); |
453 | prctl(PR_SET_NAME, comm2); | |
454 | ||
455 | again: | |
456 | ret = sem_post(&this_task->ready_for_work); | |
457 | BUG_ON(ret); | |
ec156764 IM |
458 | ret = pthread_mutex_lock(&start_work_mutex); |
459 | BUG_ON(ret); | |
460 | ret = pthread_mutex_unlock(&start_work_mutex); | |
461 | BUG_ON(ret); | |
ec156764 IM |
462 | |
463 | cpu_usage_0 = get_cpu_usage_nsec_self(); | |
464 | ||
465 | for (i = 0; i < this_task->nr_events; i++) { | |
466 | this_task->curr_event = i; | |
467 | process_sched_event(this_task, this_task->events[i]); | |
468 | } | |
469 | ||
470 | cpu_usage_1 = get_cpu_usage_nsec_self(); | |
471 | this_task->cpu_usage = cpu_usage_1 - cpu_usage_0; | |
472 | ||
ec156764 IM |
473 | ret = sem_post(&this_task->work_done_sem); |
474 | BUG_ON(ret); | |
ec156764 IM |
475 | |
476 | ret = pthread_mutex_lock(&work_done_wait_mutex); | |
477 | BUG_ON(ret); | |
478 | ret = pthread_mutex_unlock(&work_done_wait_mutex); | |
479 | BUG_ON(ret); | |
ec156764 IM |
480 | |
481 | goto again; | |
482 | } | |
483 | ||
484 | static void create_tasks(void) | |
485 | { | |
486 | struct task_desc *task; | |
487 | pthread_attr_t attr; | |
488 | unsigned long i; | |
489 | int err; | |
490 | ||
491 | err = pthread_attr_init(&attr); | |
492 | BUG_ON(err); | |
493 | err = pthread_attr_setstacksize(&attr, (size_t)(16*1024)); | |
494 | BUG_ON(err); | |
495 | err = pthread_mutex_lock(&start_work_mutex); | |
496 | BUG_ON(err); | |
497 | err = pthread_mutex_lock(&work_done_wait_mutex); | |
498 | BUG_ON(err); | |
499 | for (i = 0; i < nr_tasks; i++) { | |
500 | task = tasks[i]; | |
501 | sem_init(&task->sleep_sem, 0, 0); | |
502 | sem_init(&task->ready_for_work, 0, 0); | |
503 | sem_init(&task->work_done_sem, 0, 0); | |
504 | task->curr_event = 0; | |
505 | err = pthread_create(&task->thread, &attr, thread_func, task); | |
506 | BUG_ON(err); | |
507 | } | |
508 | } | |
509 | ||
ec156764 IM |
510 | static void wait_for_tasks(void) |
511 | { | |
b1ffe8f3 | 512 | u64 cpu_usage_0, cpu_usage_1; |
ec156764 IM |
513 | struct task_desc *task; |
514 | unsigned long i, ret; | |
515 | ||
ec156764 | 516 | start_time = get_nsecs(); |
ec156764 IM |
517 | cpu_usage = 0; |
518 | pthread_mutex_unlock(&work_done_wait_mutex); | |
519 | ||
520 | for (i = 0; i < nr_tasks; i++) { | |
521 | task = tasks[i]; | |
522 | ret = sem_wait(&task->ready_for_work); | |
523 | BUG_ON(ret); | |
524 | sem_init(&task->ready_for_work, 0, 0); | |
525 | } | |
526 | ret = pthread_mutex_lock(&work_done_wait_mutex); | |
527 | BUG_ON(ret); | |
528 | ||
529 | cpu_usage_0 = get_cpu_usage_nsec_parent(); | |
530 | ||
531 | pthread_mutex_unlock(&start_work_mutex); | |
532 | ||
ec156764 IM |
533 | for (i = 0; i < nr_tasks; i++) { |
534 | task = tasks[i]; | |
535 | ret = sem_wait(&task->work_done_sem); | |
536 | BUG_ON(ret); | |
537 | sem_init(&task->work_done_sem, 0, 0); | |
538 | cpu_usage += task->cpu_usage; | |
539 | task->cpu_usage = 0; | |
540 | } | |
541 | ||
542 | cpu_usage_1 = get_cpu_usage_nsec_parent(); | |
543 | if (!runavg_cpu_usage) | |
544 | runavg_cpu_usage = cpu_usage; | |
545 | runavg_cpu_usage = (runavg_cpu_usage*9 + cpu_usage)/10; | |
546 | ||
547 | parent_cpu_usage = cpu_usage_1 - cpu_usage_0; | |
548 | if (!runavg_parent_cpu_usage) | |
549 | runavg_parent_cpu_usage = parent_cpu_usage; | |
550 | runavg_parent_cpu_usage = (runavg_parent_cpu_usage*9 + | |
551 | parent_cpu_usage)/10; | |
552 | ||
553 | ret = pthread_mutex_lock(&start_work_mutex); | |
554 | BUG_ON(ret); | |
555 | ||
556 | for (i = 0; i < nr_tasks; i++) { | |
557 | task = tasks[i]; | |
558 | sem_init(&task->sleep_sem, 0, 0); | |
559 | task->curr_event = 0; | |
560 | } | |
561 | } | |
562 | ||
ec156764 IM |
563 | static void run_one_test(void) |
564 | { | |
b1ffe8f3 | 565 | u64 T0, T1, delta, avg_delta, fluct, std_dev; |
ec156764 IM |
566 | |
567 | T0 = get_nsecs(); | |
568 | wait_for_tasks(); | |
569 | T1 = get_nsecs(); | |
570 | ||
571 | delta = T1 - T0; | |
572 | sum_runtime += delta; | |
573 | nr_runs++; | |
574 | ||
575 | avg_delta = sum_runtime / nr_runs; | |
576 | if (delta < avg_delta) | |
577 | fluct = avg_delta - delta; | |
578 | else | |
579 | fluct = delta - avg_delta; | |
580 | sum_fluct += fluct; | |
581 | std_dev = sum_fluct / nr_runs / sqrt(nr_runs); | |
582 | if (!run_avg) | |
583 | run_avg = delta; | |
584 | run_avg = (run_avg*9 + delta)/10; | |
585 | ||
ad236fd2 | 586 | printf("#%-3ld: %0.3f, ", |
ec156764 IM |
587 | nr_runs, (double)delta/1000000.0); |
588 | ||
ad236fd2 | 589 | printf("ravg: %0.2f, ", |
ec156764 IM |
590 | (double)run_avg/1e6); |
591 | ||
ad236fd2 | 592 | printf("cpu: %0.2f / %0.2f", |
ec156764 IM |
593 | (double)cpu_usage/1e6, (double)runavg_cpu_usage/1e6); |
594 | ||
595 | #if 0 | |
596 | /* | |
fbf94829 IM |
597 | * rusage statistics done by the parent, these are less |
598 | * accurate than the sum_exec_runtime based statistics: | |
599 | */ | |
ad236fd2 | 600 | printf(" [%0.2f / %0.2f]", |
ec156764 IM |
601 | (double)parent_cpu_usage/1e6, |
602 | (double)runavg_parent_cpu_usage/1e6); | |
603 | #endif | |
604 | ||
ad236fd2 | 605 | printf("\n"); |
ec156764 IM |
606 | |
607 | if (nr_sleep_corrections) | |
ad236fd2 | 608 | printf(" (%ld sleep corrections)\n", nr_sleep_corrections); |
ec156764 IM |
609 | nr_sleep_corrections = 0; |
610 | } | |
611 | ||
612 | static void test_calibrations(void) | |
613 | { | |
b1ffe8f3 | 614 | u64 T0, T1; |
ec156764 IM |
615 | |
616 | T0 = get_nsecs(); | |
617 | burn_nsecs(1e6); | |
618 | T1 = get_nsecs(); | |
619 | ||
ad236fd2 | 620 | printf("the run test took %Ld nsecs\n", T1-T0); |
ec156764 IM |
621 | |
622 | T0 = get_nsecs(); | |
623 | sleep_nsecs(1e6); | |
624 | T1 = get_nsecs(); | |
625 | ||
ad236fd2 | 626 | printf("the sleep test took %Ld nsecs\n", T1-T0); |
ec156764 IM |
627 | } |
628 | ||
46f392c9 IM |
629 | static void __cmd_replay(void) |
630 | { | |
f2858d8a | 631 | unsigned long i; |
46f392c9 IM |
632 | |
633 | calibrate_run_measurement_overhead(); | |
634 | calibrate_sleep_measurement_overhead(); | |
635 | ||
636 | test_calibrations(); | |
637 | ||
638 | read_events(); | |
639 | ||
640 | printf("nr_run_events: %ld\n", nr_run_events); | |
641 | printf("nr_sleep_events: %ld\n", nr_sleep_events); | |
642 | printf("nr_wakeup_events: %ld\n", nr_wakeup_events); | |
643 | ||
644 | if (targetless_wakeups) | |
645 | printf("target-less wakeups: %ld\n", targetless_wakeups); | |
646 | if (multitarget_wakeups) | |
647 | printf("multi-target wakeups: %ld\n", multitarget_wakeups); | |
648 | if (nr_run_events_optimized) | |
649 | printf("run events optimized: %ld\n", | |
650 | nr_run_events_optimized); | |
651 | ||
652 | print_task_traces(); | |
653 | add_cross_task_wakeups(); | |
654 | ||
655 | create_tasks(); | |
656 | printf("------------------------------------------------------------\n"); | |
f2858d8a | 657 | for (i = 0; i < replay_repeat; i++) |
46f392c9 IM |
658 | run_one_test(); |
659 | } | |
660 | ||
0a02ad93 IM |
661 | static int |
662 | process_comm_event(event_t *event, unsigned long offset, unsigned long head) | |
663 | { | |
664 | struct thread *thread; | |
665 | ||
666 | thread = threads__findnew(event->comm.pid, &threads, &last_match); | |
667 | ||
668 | dump_printf("%p [%p]: PERF_EVENT_COMM: %s:%d\n", | |
669 | (void *)(offset + head), | |
670 | (void *)(long)(event->header.size), | |
671 | event->comm.comm, event->comm.pid); | |
672 | ||
673 | if (thread == NULL || | |
674 | thread__set_comm(thread, event->comm.comm)) { | |
675 | dump_printf("problem processing PERF_EVENT_COMM, skipping event.\n"); | |
676 | return -1; | |
677 | } | |
678 | total_comm++; | |
679 | ||
680 | return 0; | |
681 | } | |
682 | ||
46538818 FW |
683 | |
684 | struct raw_event_sample { | |
685 | u32 size; | |
686 | char data[0]; | |
687 | }; | |
688 | ||
689 | #define FILL_FIELD(ptr, field, event, data) \ | |
690 | ptr.field = (typeof(ptr.field)) raw_field_value(event, #field, data) | |
691 | ||
692 | #define FILL_ARRAY(ptr, array, event, data) \ | |
693 | do { \ | |
694 | void *__array = raw_field_ptr(event, #array, data); \ | |
695 | memcpy(ptr.array, __array, sizeof(ptr.array)); \ | |
696 | } while(0) | |
697 | ||
698 | #define FILL_COMMON_FIELDS(ptr, event, data) \ | |
699 | do { \ | |
700 | FILL_FIELD(ptr, common_type, event, data); \ | |
701 | FILL_FIELD(ptr, common_flags, event, data); \ | |
702 | FILL_FIELD(ptr, common_preempt_count, event, data); \ | |
703 | FILL_FIELD(ptr, common_pid, event, data); \ | |
704 | FILL_FIELD(ptr, common_tgid, event, data); \ | |
705 | } while (0) | |
706 | ||
419ab0d6 FW |
707 | |
708 | ||
709 | struct trace_switch_event { | |
710 | u32 size; | |
711 | ||
712 | u16 common_type; | |
713 | u8 common_flags; | |
714 | u8 common_preempt_count; | |
715 | u32 common_pid; | |
716 | u32 common_tgid; | |
717 | ||
718 | char prev_comm[16]; | |
719 | u32 prev_pid; | |
720 | u32 prev_prio; | |
721 | u64 prev_state; | |
722 | char next_comm[16]; | |
723 | u32 next_pid; | |
724 | u32 next_prio; | |
725 | }; | |
726 | ||
727 | ||
fbf94829 IM |
728 | struct trace_wakeup_event { |
729 | u32 size; | |
730 | ||
731 | u16 common_type; | |
732 | u8 common_flags; | |
733 | u8 common_preempt_count; | |
734 | u32 common_pid; | |
735 | u32 common_tgid; | |
736 | ||
737 | char comm[16]; | |
738 | u32 pid; | |
739 | ||
740 | u32 prio; | |
741 | u32 success; | |
742 | u32 cpu; | |
743 | }; | |
744 | ||
419ab0d6 FW |
745 | struct trace_fork_event { |
746 | u32 size; | |
46538818 | 747 | |
419ab0d6 FW |
748 | u16 common_type; |
749 | u8 common_flags; | |
750 | u8 common_preempt_count; | |
751 | u32 common_pid; | |
752 | u32 common_tgid; | |
753 | ||
754 | char parent_comm[16]; | |
755 | u32 parent_pid; | |
756 | char child_comm[16]; | |
757 | u32 child_pid; | |
758 | }; | |
759 | ||
760 | struct trace_sched_handler { | |
761 | void (*switch_event)(struct trace_switch_event *, | |
762 | struct event *, | |
763 | int cpu, | |
764 | u64 timestamp, | |
765 | struct thread *thread); | |
766 | ||
767 | void (*wakeup_event)(struct trace_wakeup_event *, | |
768 | struct event *, | |
769 | int cpu, | |
770 | u64 timestamp, | |
771 | struct thread *thread); | |
772 | ||
773 | void (*fork_event)(struct trace_fork_event *, | |
774 | struct event *, | |
775 | int cpu, | |
776 | u64 timestamp, | |
777 | struct thread *thread); | |
778 | }; | |
46538818 | 779 | |
46538818 | 780 | |
419ab0d6 FW |
781 | static void |
782 | replay_wakeup_event(struct trace_wakeup_event *wakeup_event, | |
783 | struct event *event, | |
784 | int cpu __used, | |
785 | u64 timestamp __used, | |
786 | struct thread *thread __used) | |
787 | { | |
788 | struct task_desc *waker, *wakee; | |
fbf94829 | 789 | |
ad236fd2 IM |
790 | if (verbose) { |
791 | printf("sched_wakeup event %p\n", event); | |
fbf94829 | 792 | |
ad236fd2 | 793 | printf(" ... pid %d woke up %s/%d\n", |
419ab0d6 FW |
794 | wakeup_event->common_pid, |
795 | wakeup_event->comm, | |
796 | wakeup_event->pid); | |
ad236fd2 | 797 | } |
fbf94829 | 798 | |
419ab0d6 FW |
799 | waker = register_pid(wakeup_event->common_pid, "<unknown>"); |
800 | wakee = register_pid(wakeup_event->pid, wakeup_event->comm); | |
fbf94829 IM |
801 | |
802 | add_sched_event_wakeup(waker, timestamp, wakee); | |
ec156764 IM |
803 | } |
804 | ||
419ab0d6 | 805 | static unsigned long cpu_last_switched[MAX_CPUS]; |
fbf94829 IM |
806 | |
807 | static void | |
419ab0d6 FW |
808 | replay_switch_event(struct trace_switch_event *switch_event, |
809 | struct event *event, | |
810 | int cpu, | |
811 | u64 timestamp, | |
812 | struct thread *thread __used) | |
ec156764 | 813 | { |
fbf94829 IM |
814 | struct task_desc *prev, *next; |
815 | u64 timestamp0; | |
816 | s64 delta; | |
817 | ||
ad236fd2 IM |
818 | if (verbose) |
819 | printf("sched_switch event %p\n", event); | |
820 | ||
fbf94829 IM |
821 | if (cpu >= MAX_CPUS || cpu < 0) |
822 | return; | |
823 | ||
824 | timestamp0 = cpu_last_switched[cpu]; | |
825 | if (timestamp0) | |
826 | delta = timestamp - timestamp0; | |
827 | else | |
828 | delta = 0; | |
829 | ||
830 | if (delta < 0) | |
831 | die("hm, delta: %Ld < 0 ?\n", delta); | |
832 | ||
ad236fd2 IM |
833 | if (verbose) { |
834 | printf(" ... switch from %s/%d to %s/%d [ran %Ld nsecs]\n", | |
419ab0d6 FW |
835 | switch_event->prev_comm, switch_event->prev_pid, |
836 | switch_event->next_comm, switch_event->next_pid, | |
ad236fd2 IM |
837 | delta); |
838 | } | |
fbf94829 | 839 | |
419ab0d6 FW |
840 | prev = register_pid(switch_event->prev_pid, switch_event->prev_comm); |
841 | next = register_pid(switch_event->next_pid, switch_event->next_comm); | |
fbf94829 IM |
842 | |
843 | cpu_last_switched[cpu] = timestamp; | |
844 | ||
845 | add_sched_event_run(prev, timestamp, delta); | |
419ab0d6 | 846 | add_sched_event_sleep(prev, timestamp, switch_event->prev_state); |
fbf94829 IM |
847 | } |
848 | ||
fbf94829 | 849 | |
419ab0d6 FW |
850 | static void |
851 | replay_fork_event(struct trace_fork_event *fork_event, | |
852 | struct event *event, | |
853 | int cpu __used, | |
854 | u64 timestamp __used, | |
855 | struct thread *thread __used) | |
856 | { | |
857 | if (verbose) { | |
858 | printf("sched_fork event %p\n", event); | |
859 | printf("... parent: %s/%d\n", fork_event->parent_comm, fork_event->parent_pid); | |
860 | printf("... child: %s/%d\n", fork_event->child_comm, fork_event->child_pid); | |
861 | } | |
862 | register_pid(fork_event->parent_pid, fork_event->parent_comm); | |
863 | register_pid(fork_event->child_pid, fork_event->child_comm); | |
864 | } | |
fbf94829 | 865 | |
419ab0d6 | 866 | static struct trace_sched_handler replay_ops = { |
ea92ed5a IM |
867 | .wakeup_event = replay_wakeup_event, |
868 | .switch_event = replay_switch_event, | |
869 | .fork_event = replay_fork_event, | |
fbf94829 IM |
870 | }; |
871 | ||
b1ffe8f3 IM |
872 | struct sort_dimension { |
873 | const char *name; | |
b5fae128 | 874 | sort_fn_t cmp; |
b1ffe8f3 IM |
875 | struct list_head list; |
876 | }; | |
877 | ||
878 | static LIST_HEAD(cmp_pid); | |
879 | ||
daa1d7a5 | 880 | static int |
b5fae128 | 881 | thread_lat_cmp(struct list_head *list, struct task_atoms *l, struct task_atoms *r) |
daa1d7a5 FW |
882 | { |
883 | struct sort_dimension *sort; | |
884 | int ret = 0; | |
885 | ||
b5fae128 IM |
886 | BUG_ON(list_empty(list)); |
887 | ||
daa1d7a5 FW |
888 | list_for_each_entry(sort, list, list) { |
889 | ret = sort->cmp(l, r); | |
890 | if (ret) | |
891 | return ret; | |
892 | } | |
893 | ||
894 | return ret; | |
895 | } | |
896 | ||
b5fae128 IM |
897 | static struct task_atoms * |
898 | thread_atoms_search(struct rb_root *root, struct thread *thread, | |
899 | struct list_head *sort_list) | |
900 | { | |
901 | struct rb_node *node = root->rb_node; | |
902 | struct task_atoms key = { .thread = thread }; | |
903 | ||
904 | while (node) { | |
905 | struct task_atoms *atoms; | |
906 | int cmp; | |
907 | ||
908 | atoms = container_of(node, struct task_atoms, node); | |
909 | ||
910 | cmp = thread_lat_cmp(sort_list, &key, atoms); | |
911 | if (cmp > 0) | |
912 | node = node->rb_left; | |
913 | else if (cmp < 0) | |
914 | node = node->rb_right; | |
915 | else { | |
916 | BUG_ON(thread != atoms->thread); | |
917 | return atoms; | |
918 | } | |
919 | } | |
920 | return NULL; | |
921 | } | |
922 | ||
cdce9d73 | 923 | static void |
daa1d7a5 FW |
924 | __thread_latency_insert(struct rb_root *root, struct task_atoms *data, |
925 | struct list_head *sort_list) | |
cdce9d73 FW |
926 | { |
927 | struct rb_node **new = &(root->rb_node), *parent = NULL; | |
928 | ||
929 | while (*new) { | |
17562205 | 930 | struct task_atoms *this; |
daa1d7a5 | 931 | int cmp; |
cdce9d73 | 932 | |
17562205 | 933 | this = container_of(*new, struct task_atoms, node); |
cdce9d73 | 934 | parent = *new; |
daa1d7a5 FW |
935 | |
936 | cmp = thread_lat_cmp(sort_list, data, this); | |
937 | ||
938 | if (cmp > 0) | |
cdce9d73 | 939 | new = &((*new)->rb_left); |
cdce9d73 | 940 | else |
daa1d7a5 | 941 | new = &((*new)->rb_right); |
cdce9d73 FW |
942 | } |
943 | ||
944 | rb_link_node(&data->node, parent, new); | |
945 | rb_insert_color(&data->node, root); | |
946 | } | |
947 | ||
b1ffe8f3 | 948 | static void thread_atoms_insert(struct thread *thread) |
cdce9d73 | 949 | { |
17562205 | 950 | struct task_atoms *atoms; |
b1ffe8f3 | 951 | |
17562205 FW |
952 | atoms = calloc(sizeof(*atoms), 1); |
953 | if (!atoms) | |
cdce9d73 FW |
954 | die("No memory"); |
955 | ||
17562205 | 956 | atoms->thread = thread; |
b1ffe8f3 IM |
957 | INIT_LIST_HEAD(&atoms->atom_list); |
958 | __thread_latency_insert(&atom_root, atoms, &cmp_pid); | |
cdce9d73 FW |
959 | } |
960 | ||
961 | static void | |
962 | latency_fork_event(struct trace_fork_event *fork_event __used, | |
963 | struct event *event __used, | |
964 | int cpu __used, | |
965 | u64 timestamp __used, | |
966 | struct thread *thread __used) | |
967 | { | |
968 | /* should insert the newcomer */ | |
969 | } | |
970 | ||
ea92ed5a | 971 | __used |
cdce9d73 FW |
972 | static char sched_out_state(struct trace_switch_event *switch_event) |
973 | { | |
974 | const char *str = TASK_STATE_TO_CHAR_STR; | |
975 | ||
976 | return str[switch_event->prev_state]; | |
977 | } | |
978 | ||
979 | static void | |
17562205 | 980 | lat_sched_out(struct task_atoms *atoms, |
c6ced611 FW |
981 | struct trace_switch_event *switch_event __used, |
982 | u64 delta, | |
983 | u64 timestamp) | |
cdce9d73 | 984 | { |
b1ffe8f3 | 985 | struct work_atom *atom; |
cdce9d73 | 986 | |
b1ffe8f3 IM |
987 | atom = calloc(sizeof(*atom), 1); |
988 | if (!atom) | |
cdce9d73 FW |
989 | die("Non memory"); |
990 | ||
c6ced611 | 991 | if (sched_out_state(switch_event) == 'R') { |
b1ffe8f3 IM |
992 | atom->state = THREAD_WAIT_CPU; |
993 | atom->wake_up_time = timestamp; | |
c6ced611 FW |
994 | } |
995 | ||
b1ffe8f3 IM |
996 | atom->runtime = delta; |
997 | list_add_tail(&atom->list, &atoms->atom_list); | |
cdce9d73 FW |
998 | } |
999 | ||
1000 | static void | |
17562205 | 1001 | lat_sched_in(struct task_atoms *atoms, u64 timestamp) |
cdce9d73 | 1002 | { |
b1ffe8f3 | 1003 | struct work_atom *atom; |
66685678 | 1004 | u64 delta; |
cdce9d73 | 1005 | |
b1ffe8f3 | 1006 | if (list_empty(&atoms->atom_list)) |
cdce9d73 FW |
1007 | return; |
1008 | ||
b1ffe8f3 | 1009 | atom = list_entry(atoms->atom_list.prev, struct work_atom, list); |
cdce9d73 | 1010 | |
b1ffe8f3 | 1011 | if (atom->state != THREAD_WAIT_CPU) |
cdce9d73 FW |
1012 | return; |
1013 | ||
b1ffe8f3 IM |
1014 | if (timestamp < atom->wake_up_time) { |
1015 | atom->state = THREAD_IGNORE; | |
cdce9d73 FW |
1016 | return; |
1017 | } | |
1018 | ||
b1ffe8f3 IM |
1019 | atom->state = THREAD_SCHED_IN; |
1020 | atom->sched_in_time = timestamp; | |
66685678 | 1021 | |
b1ffe8f3 | 1022 | delta = atom->sched_in_time - atom->wake_up_time; |
66685678 FW |
1023 | atoms->total_lat += delta; |
1024 | if (delta > atoms->max_lat) | |
1025 | atoms->max_lat = delta; | |
1026 | atoms->nb_atoms++; | |
b1ffe8f3 | 1027 | atoms->total_runtime += atom->runtime; |
cdce9d73 FW |
1028 | } |
1029 | ||
cdce9d73 FW |
1030 | static void |
1031 | latency_switch_event(struct trace_switch_event *switch_event, | |
1032 | struct event *event __used, | |
ea92ed5a | 1033 | int cpu, |
cdce9d73 FW |
1034 | u64 timestamp, |
1035 | struct thread *thread __used) | |
1036 | { | |
17562205 | 1037 | struct task_atoms *out_atoms, *in_atoms; |
cdce9d73 | 1038 | struct thread *sched_out, *sched_in; |
ea92ed5a IM |
1039 | u64 timestamp0; |
1040 | s64 delta; | |
1041 | ||
1042 | if (cpu >= MAX_CPUS || cpu < 0) | |
1043 | return; | |
1044 | ||
1045 | timestamp0 = cpu_last_switched[cpu]; | |
1046 | cpu_last_switched[cpu] = timestamp; | |
1047 | if (timestamp0) | |
1048 | delta = timestamp - timestamp0; | |
1049 | else | |
1050 | delta = 0; | |
1051 | ||
1052 | if (delta < 0) | |
1053 | die("hm, delta: %Ld < 0 ?\n", delta); | |
1054 | ||
cdce9d73 FW |
1055 | |
1056 | sched_out = threads__findnew(switch_event->prev_pid, &threads, &last_match); | |
1057 | sched_in = threads__findnew(switch_event->next_pid, &threads, &last_match); | |
1058 | ||
b5fae128 | 1059 | in_atoms = thread_atoms_search(&atom_root, sched_in, &cmp_pid); |
17562205 | 1060 | if (!in_atoms) { |
b1ffe8f3 | 1061 | thread_atoms_insert(sched_in); |
b5fae128 | 1062 | in_atoms = thread_atoms_search(&atom_root, sched_in, &cmp_pid); |
17562205 | 1063 | if (!in_atoms) |
b1ffe8f3 | 1064 | die("in-atom: Internal tree error"); |
cdce9d73 FW |
1065 | } |
1066 | ||
b5fae128 | 1067 | out_atoms = thread_atoms_search(&atom_root, sched_out, &cmp_pid); |
17562205 | 1068 | if (!out_atoms) { |
b1ffe8f3 | 1069 | thread_atoms_insert(sched_out); |
b5fae128 | 1070 | out_atoms = thread_atoms_search(&atom_root, sched_out, &cmp_pid); |
17562205 | 1071 | if (!out_atoms) |
b1ffe8f3 | 1072 | die("out-atom: Internal tree error"); |
cdce9d73 FW |
1073 | } |
1074 | ||
17562205 | 1075 | lat_sched_in(in_atoms, timestamp); |
c6ced611 | 1076 | lat_sched_out(out_atoms, switch_event, delta, timestamp); |
cdce9d73 FW |
1077 | } |
1078 | ||
1079 | static void | |
1080 | latency_wakeup_event(struct trace_wakeup_event *wakeup_event, | |
1081 | struct event *event __used, | |
1082 | int cpu __used, | |
1083 | u64 timestamp, | |
1084 | struct thread *thread __used) | |
1085 | { | |
17562205 | 1086 | struct task_atoms *atoms; |
b1ffe8f3 | 1087 | struct work_atom *atom; |
cdce9d73 FW |
1088 | struct thread *wakee; |
1089 | ||
1090 | /* Note for later, it may be interesting to observe the failing cases */ | |
1091 | if (!wakeup_event->success) | |
1092 | return; | |
1093 | ||
1094 | wakee = threads__findnew(wakeup_event->pid, &threads, &last_match); | |
b5fae128 | 1095 | atoms = thread_atoms_search(&atom_root, wakee, &cmp_pid); |
17562205 | 1096 | if (!atoms) { |
b1ffe8f3 | 1097 | thread_atoms_insert(wakee); |
cdce9d73 FW |
1098 | return; |
1099 | } | |
1100 | ||
b1ffe8f3 | 1101 | if (list_empty(&atoms->atom_list)) |
cdce9d73 FW |
1102 | return; |
1103 | ||
b1ffe8f3 | 1104 | atom = list_entry(atoms->atom_list.prev, struct work_atom, list); |
cdce9d73 | 1105 | |
b1ffe8f3 | 1106 | if (atom->state != THREAD_SLEEPING) |
cdce9d73 FW |
1107 | return; |
1108 | ||
b1ffe8f3 IM |
1109 | atom->state = THREAD_WAIT_CPU; |
1110 | atom->wake_up_time = timestamp; | |
cdce9d73 FW |
1111 | } |
1112 | ||
1113 | static struct trace_sched_handler lat_ops = { | |
ea92ed5a IM |
1114 | .wakeup_event = latency_wakeup_event, |
1115 | .switch_event = latency_switch_event, | |
1116 | .fork_event = latency_fork_event, | |
cdce9d73 FW |
1117 | }; |
1118 | ||
17562205 | 1119 | static void output_lat_thread(struct task_atoms *atom_list) |
cdce9d73 | 1120 | { |
cdce9d73 FW |
1121 | int i; |
1122 | int ret; | |
66685678 | 1123 | u64 avg; |
cdce9d73 | 1124 | |
66685678 | 1125 | if (!atom_list->nb_atoms) |
cdce9d73 FW |
1126 | return; |
1127 | ||
66685678 FW |
1128 | all_runtime += atom_list->total_runtime; |
1129 | all_count += atom_list->nb_atoms; | |
1130 | ||
17562205 | 1131 | ret = printf(" %s ", atom_list->thread->comm); |
cdce9d73 | 1132 | |
d9340c1d | 1133 | for (i = 0; i < 19 - ret; i++) |
cdce9d73 FW |
1134 | printf(" "); |
1135 | ||
66685678 | 1136 | avg = atom_list->total_lat / atom_list->nb_atoms; |
cdce9d73 | 1137 | |
66685678 | 1138 | printf("|%9.3f ms |%9llu | avg:%9.3f ms | max:%9.3f ms |\n", |
73622626 FW |
1139 | (double)atom_list->total_runtime / 1e6, |
1140 | atom_list->nb_atoms, (double)avg / 1e6, | |
1141 | (double)atom_list->max_lat / 1e6); | |
cdce9d73 FW |
1142 | } |
1143 | ||
daa1d7a5 FW |
1144 | static int pid_cmp(struct task_atoms *l, struct task_atoms *r) |
1145 | { | |
daa1d7a5 FW |
1146 | if (l->thread->pid < r->thread->pid) |
1147 | return -1; | |
1148 | if (l->thread->pid > r->thread->pid) | |
1149 | return 1; | |
1150 | ||
1151 | return 0; | |
1152 | } | |
1153 | ||
1154 | static struct sort_dimension pid_sort_dimension = { | |
b5fae128 IM |
1155 | .name = "pid", |
1156 | .cmp = pid_cmp, | |
daa1d7a5 FW |
1157 | }; |
1158 | ||
1159 | static int avg_cmp(struct task_atoms *l, struct task_atoms *r) | |
1160 | { | |
1161 | u64 avgl, avgr; | |
1162 | ||
1163 | if (!l->nb_atoms) | |
1164 | return -1; | |
1165 | ||
1166 | if (!r->nb_atoms) | |
1167 | return 1; | |
1168 | ||
1169 | avgl = l->total_lat / l->nb_atoms; | |
1170 | avgr = r->total_lat / r->nb_atoms; | |
1171 | ||
1172 | if (avgl < avgr) | |
1173 | return -1; | |
1174 | if (avgl > avgr) | |
1175 | return 1; | |
1176 | ||
1177 | return 0; | |
1178 | } | |
1179 | ||
1180 | static struct sort_dimension avg_sort_dimension = { | |
b5fae128 IM |
1181 | .name = "avg", |
1182 | .cmp = avg_cmp, | |
daa1d7a5 FW |
1183 | }; |
1184 | ||
1185 | static int max_cmp(struct task_atoms *l, struct task_atoms *r) | |
1186 | { | |
1187 | if (l->max_lat < r->max_lat) | |
1188 | return -1; | |
1189 | if (l->max_lat > r->max_lat) | |
1190 | return 1; | |
1191 | ||
1192 | return 0; | |
1193 | } | |
1194 | ||
1195 | static struct sort_dimension max_sort_dimension = { | |
b5fae128 IM |
1196 | .name = "max", |
1197 | .cmp = max_cmp, | |
daa1d7a5 FW |
1198 | }; |
1199 | ||
1200 | static int switch_cmp(struct task_atoms *l, struct task_atoms *r) | |
1201 | { | |
1202 | if (l->nb_atoms < r->nb_atoms) | |
1203 | return -1; | |
1204 | if (l->nb_atoms > r->nb_atoms) | |
1205 | return 1; | |
1206 | ||
1207 | return 0; | |
1208 | } | |
1209 | ||
1210 | static struct sort_dimension switch_sort_dimension = { | |
b5fae128 IM |
1211 | .name = "switch", |
1212 | .cmp = switch_cmp, | |
daa1d7a5 FW |
1213 | }; |
1214 | ||
1215 | static int runtime_cmp(struct task_atoms *l, struct task_atoms *r) | |
1216 | { | |
1217 | if (l->total_runtime < r->total_runtime) | |
1218 | return -1; | |
1219 | if (l->total_runtime > r->total_runtime) | |
1220 | return 1; | |
1221 | ||
1222 | return 0; | |
1223 | } | |
1224 | ||
1225 | static struct sort_dimension runtime_sort_dimension = { | |
b5fae128 IM |
1226 | .name = "runtime", |
1227 | .cmp = runtime_cmp, | |
daa1d7a5 FW |
1228 | }; |
1229 | ||
1230 | static struct sort_dimension *available_sorts[] = { | |
1231 | &pid_sort_dimension, | |
1232 | &avg_sort_dimension, | |
1233 | &max_sort_dimension, | |
1234 | &switch_sort_dimension, | |
1235 | &runtime_sort_dimension, | |
1236 | }; | |
1237 | ||
1238 | #define NB_AVAILABLE_SORTS (int)(sizeof(available_sorts) / sizeof(struct sort_dimension *)) | |
1239 | ||
1240 | static LIST_HEAD(sort_list); | |
1241 | ||
1242 | static int sort_dimension__add(char *tok, struct list_head *list) | |
1243 | { | |
1244 | int i; | |
1245 | ||
1246 | for (i = 0; i < NB_AVAILABLE_SORTS; i++) { | |
1247 | if (!strcmp(available_sorts[i]->name, tok)) { | |
1248 | list_add_tail(&available_sorts[i]->list, list); | |
1249 | ||
1250 | return 0; | |
1251 | } | |
1252 | } | |
1253 | ||
1254 | return -1; | |
1255 | } | |
1256 | ||
1257 | static void setup_sorting(void); | |
1258 | ||
1259 | static void sort_lat(void) | |
1260 | { | |
1261 | struct rb_node *node; | |
1262 | ||
1263 | for (;;) { | |
1264 | struct task_atoms *data; | |
b1ffe8f3 | 1265 | node = rb_first(&atom_root); |
daa1d7a5 FW |
1266 | if (!node) |
1267 | break; | |
1268 | ||
b1ffe8f3 | 1269 | rb_erase(node, &atom_root); |
daa1d7a5 | 1270 | data = rb_entry(node, struct task_atoms, node); |
b1ffe8f3 | 1271 | __thread_latency_insert(&sorted_atom_root, data, &sort_list); |
daa1d7a5 FW |
1272 | } |
1273 | } | |
1274 | ||
46f392c9 | 1275 | static void __cmd_lat(void) |
cdce9d73 FW |
1276 | { |
1277 | struct rb_node *next; | |
1278 | ||
46f392c9 IM |
1279 | setup_pager(); |
1280 | read_events(); | |
daa1d7a5 | 1281 | sort_lat(); |
46f392c9 | 1282 | |
d9340c1d | 1283 | printf("-----------------------------------------------------------------------------------\n"); |
3e304147 | 1284 | printf(" Task | Runtime ms | Switches | Average delay ms | Maximum delay ms |\n"); |
d9340c1d | 1285 | printf("-----------------------------------------------------------------------------------\n"); |
cdce9d73 | 1286 | |
b1ffe8f3 | 1287 | next = rb_first(&sorted_atom_root); |
cdce9d73 FW |
1288 | |
1289 | while (next) { | |
17562205 | 1290 | struct task_atoms *atom_list; |
cdce9d73 | 1291 | |
17562205 FW |
1292 | atom_list = rb_entry(next, struct task_atoms, node); |
1293 | output_lat_thread(atom_list); | |
cdce9d73 FW |
1294 | next = rb_next(next); |
1295 | } | |
d9340c1d IM |
1296 | |
1297 | printf("-----------------------------------------------------------------------------------\n"); | |
3e304147 | 1298 | printf(" TOTAL: |%9.3f ms |%9Ld |\n", |
73622626 | 1299 | (double)all_runtime/1e6, all_count); |
3e304147 | 1300 | printf("---------------------------------------------\n"); |
cdce9d73 | 1301 | } |
419ab0d6 FW |
1302 | |
1303 | static struct trace_sched_handler *trace_handler; | |
1304 | ||
fbf94829 | 1305 | static void |
419ab0d6 FW |
1306 | process_sched_wakeup_event(struct raw_event_sample *raw, |
1307 | struct event *event, | |
1308 | int cpu __used, | |
1309 | u64 timestamp __used, | |
1310 | struct thread *thread __used) | |
1311 | { | |
1312 | struct trace_wakeup_event wakeup_event; | |
1313 | ||
1314 | FILL_COMMON_FIELDS(wakeup_event, event, raw->data); | |
1315 | ||
1316 | FILL_ARRAY(wakeup_event, comm, event, raw->data); | |
1317 | FILL_FIELD(wakeup_event, pid, event, raw->data); | |
1318 | FILL_FIELD(wakeup_event, prio, event, raw->data); | |
1319 | FILL_FIELD(wakeup_event, success, event, raw->data); | |
1320 | FILL_FIELD(wakeup_event, cpu, event, raw->data); | |
1321 | ||
1322 | trace_handler->wakeup_event(&wakeup_event, event, cpu, timestamp, thread); | |
1323 | } | |
1324 | ||
1325 | static void | |
1326 | process_sched_switch_event(struct raw_event_sample *raw, | |
1327 | struct event *event, | |
1328 | int cpu __used, | |
1329 | u64 timestamp __used, | |
1330 | struct thread *thread __used) | |
1331 | { | |
1332 | struct trace_switch_event switch_event; | |
1333 | ||
1334 | FILL_COMMON_FIELDS(switch_event, event, raw->data); | |
1335 | ||
1336 | FILL_ARRAY(switch_event, prev_comm, event, raw->data); | |
1337 | FILL_FIELD(switch_event, prev_pid, event, raw->data); | |
1338 | FILL_FIELD(switch_event, prev_prio, event, raw->data); | |
1339 | FILL_FIELD(switch_event, prev_state, event, raw->data); | |
1340 | FILL_ARRAY(switch_event, next_comm, event, raw->data); | |
1341 | FILL_FIELD(switch_event, next_pid, event, raw->data); | |
1342 | FILL_FIELD(switch_event, next_prio, event, raw->data); | |
1343 | ||
1344 | trace_handler->switch_event(&switch_event, event, cpu, timestamp, thread); | |
1345 | } | |
1346 | ||
1347 | static void | |
1348 | process_sched_fork_event(struct raw_event_sample *raw, | |
1349 | struct event *event, | |
1350 | int cpu __used, | |
1351 | u64 timestamp __used, | |
1352 | struct thread *thread __used) | |
fbf94829 | 1353 | { |
46538818 FW |
1354 | struct trace_fork_event fork_event; |
1355 | ||
1356 | FILL_COMMON_FIELDS(fork_event, event, raw->data); | |
1357 | ||
1358 | FILL_ARRAY(fork_event, parent_comm, event, raw->data); | |
1359 | FILL_FIELD(fork_event, parent_pid, event, raw->data); | |
1360 | FILL_ARRAY(fork_event, child_comm, event, raw->data); | |
1361 | FILL_FIELD(fork_event, child_pid, event, raw->data); | |
1362 | ||
419ab0d6 | 1363 | trace_handler->fork_event(&fork_event, event, cpu, timestamp, thread); |
fbf94829 IM |
1364 | } |
1365 | ||
419ab0d6 FW |
1366 | static void |
1367 | process_sched_exit_event(struct event *event, | |
1368 | int cpu __used, | |
1369 | u64 timestamp __used, | |
1370 | struct thread *thread __used) | |
fbf94829 | 1371 | { |
ad236fd2 IM |
1372 | if (verbose) |
1373 | printf("sched_exit event %p\n", event); | |
ec156764 IM |
1374 | } |
1375 | ||
1376 | static void | |
ad236fd2 | 1377 | process_raw_event(event_t *raw_event __used, void *more_data, |
ec156764 IM |
1378 | int cpu, u64 timestamp, struct thread *thread) |
1379 | { | |
46538818 | 1380 | struct raw_event_sample *raw = more_data; |
ec156764 IM |
1381 | struct event *event; |
1382 | int type; | |
1383 | ||
1384 | type = trace_parse_common_type(raw->data); | |
1385 | event = trace_find_event(type); | |
1386 | ||
ec156764 | 1387 | if (!strcmp(event->name, "sched_switch")) |
46538818 | 1388 | process_sched_switch_event(raw, event, cpu, timestamp, thread); |
ec156764 | 1389 | if (!strcmp(event->name, "sched_wakeup")) |
46538818 | 1390 | process_sched_wakeup_event(raw, event, cpu, timestamp, thread); |
fbf94829 | 1391 | if (!strcmp(event->name, "sched_wakeup_new")) |
46538818 | 1392 | process_sched_wakeup_event(raw, event, cpu, timestamp, thread); |
fbf94829 | 1393 | if (!strcmp(event->name, "sched_process_fork")) |
46538818 | 1394 | process_sched_fork_event(raw, event, cpu, timestamp, thread); |
fbf94829 IM |
1395 | if (!strcmp(event->name, "sched_process_exit")) |
1396 | process_sched_exit_event(event, cpu, timestamp, thread); | |
ec156764 IM |
1397 | } |
1398 | ||
0a02ad93 IM |
1399 | static int |
1400 | process_sample_event(event_t *event, unsigned long offset, unsigned long head) | |
1401 | { | |
1402 | char level; | |
1403 | int show = 0; | |
1404 | struct dso *dso = NULL; | |
1405 | struct thread *thread; | |
1406 | u64 ip = event->ip.ip; | |
1407 | u64 timestamp = -1; | |
1408 | u32 cpu = -1; | |
1409 | u64 period = 1; | |
1410 | void *more_data = event->ip.__more_data; | |
1411 | int cpumode; | |
1412 | ||
1413 | thread = threads__findnew(event->ip.pid, &threads, &last_match); | |
1414 | ||
1415 | if (sample_type & PERF_SAMPLE_TIME) { | |
1416 | timestamp = *(u64 *)more_data; | |
1417 | more_data += sizeof(u64); | |
1418 | } | |
1419 | ||
1420 | if (sample_type & PERF_SAMPLE_CPU) { | |
1421 | cpu = *(u32 *)more_data; | |
1422 | more_data += sizeof(u32); | |
1423 | more_data += sizeof(u32); /* reserved */ | |
1424 | } | |
1425 | ||
1426 | if (sample_type & PERF_SAMPLE_PERIOD) { | |
1427 | period = *(u64 *)more_data; | |
1428 | more_data += sizeof(u64); | |
1429 | } | |
1430 | ||
1431 | dump_printf("%p [%p]: PERF_EVENT_SAMPLE (IP, %d): %d/%d: %p period: %Ld\n", | |
1432 | (void *)(offset + head), | |
1433 | (void *)(long)(event->header.size), | |
1434 | event->header.misc, | |
1435 | event->ip.pid, event->ip.tid, | |
1436 | (void *)(long)ip, | |
1437 | (long long)period); | |
1438 | ||
1439 | dump_printf(" ... thread: %s:%d\n", thread->comm, thread->pid); | |
1440 | ||
1441 | if (thread == NULL) { | |
1442 | eprintf("problem processing %d event, skipping it.\n", | |
1443 | event->header.type); | |
1444 | return -1; | |
1445 | } | |
1446 | ||
1447 | cpumode = event->header.misc & PERF_EVENT_MISC_CPUMODE_MASK; | |
1448 | ||
1449 | if (cpumode == PERF_EVENT_MISC_KERNEL) { | |
1450 | show = SHOW_KERNEL; | |
1451 | level = 'k'; | |
1452 | ||
1453 | dso = kernel_dso; | |
1454 | ||
1455 | dump_printf(" ...... dso: %s\n", dso->name); | |
1456 | ||
1457 | } else if (cpumode == PERF_EVENT_MISC_USER) { | |
1458 | ||
1459 | show = SHOW_USER; | |
1460 | level = '.'; | |
1461 | ||
1462 | } else { | |
1463 | show = SHOW_HV; | |
1464 | level = 'H'; | |
1465 | ||
1466 | dso = hypervisor_dso; | |
1467 | ||
1468 | dump_printf(" ...... dso: [hypervisor]\n"); | |
1469 | } | |
1470 | ||
ec156764 IM |
1471 | if (sample_type & PERF_SAMPLE_RAW) |
1472 | process_raw_event(event, more_data, cpu, timestamp, thread); | |
0a02ad93 IM |
1473 | |
1474 | return 0; | |
1475 | } | |
1476 | ||
1477 | static int | |
1478 | process_event(event_t *event, unsigned long offset, unsigned long head) | |
1479 | { | |
1480 | trace_event(event); | |
1481 | ||
1482 | switch (event->header.type) { | |
1483 | case PERF_EVENT_MMAP ... PERF_EVENT_LOST: | |
1484 | return 0; | |
1485 | ||
1486 | case PERF_EVENT_COMM: | |
1487 | return process_comm_event(event, offset, head); | |
1488 | ||
1489 | case PERF_EVENT_EXIT ... PERF_EVENT_READ: | |
1490 | return 0; | |
1491 | ||
1492 | case PERF_EVENT_SAMPLE: | |
1493 | return process_sample_event(event, offset, head); | |
1494 | ||
1495 | case PERF_EVENT_MAX: | |
1496 | default: | |
1497 | return -1; | |
1498 | } | |
1499 | ||
1500 | return 0; | |
1501 | } | |
1502 | ||
46f392c9 | 1503 | static int read_events(void) |
0a02ad93 IM |
1504 | { |
1505 | int ret, rc = EXIT_FAILURE; | |
1506 | unsigned long offset = 0; | |
1507 | unsigned long head = 0; | |
1508 | struct stat perf_stat; | |
1509 | event_t *event; | |
1510 | uint32_t size; | |
1511 | char *buf; | |
1512 | ||
1513 | trace_report(); | |
1514 | register_idle_thread(&threads, &last_match); | |
1515 | ||
1516 | input = open(input_name, O_RDONLY); | |
1517 | if (input < 0) { | |
1518 | perror("failed to open file"); | |
1519 | exit(-1); | |
1520 | } | |
1521 | ||
1522 | ret = fstat(input, &perf_stat); | |
1523 | if (ret < 0) { | |
1524 | perror("failed to stat file"); | |
1525 | exit(-1); | |
1526 | } | |
1527 | ||
1528 | if (!perf_stat.st_size) { | |
1529 | fprintf(stderr, "zero-sized file, nothing to do!\n"); | |
1530 | exit(0); | |
1531 | } | |
1532 | header = perf_header__read(input); | |
1533 | head = header->data_offset; | |
1534 | sample_type = perf_header__sample_type(header); | |
1535 | ||
1536 | if (!(sample_type & PERF_SAMPLE_RAW)) | |
1537 | die("No trace sample to read. Did you call perf record " | |
1538 | "without -R?"); | |
1539 | ||
1540 | if (load_kernel() < 0) { | |
1541 | perror("failed to load kernel symbols"); | |
1542 | return EXIT_FAILURE; | |
1543 | } | |
1544 | ||
1545 | remap: | |
1546 | buf = (char *)mmap(NULL, page_size * mmap_window, PROT_READ, | |
1547 | MAP_SHARED, input, offset); | |
1548 | if (buf == MAP_FAILED) { | |
1549 | perror("failed to mmap file"); | |
1550 | exit(-1); | |
1551 | } | |
1552 | ||
1553 | more: | |
1554 | event = (event_t *)(buf + head); | |
1555 | ||
1556 | size = event->header.size; | |
1557 | if (!size) | |
1558 | size = 8; | |
1559 | ||
1560 | if (head + event->header.size >= page_size * mmap_window) { | |
1561 | unsigned long shift = page_size * (head / page_size); | |
1562 | int res; | |
1563 | ||
1564 | res = munmap(buf, page_size * mmap_window); | |
1565 | assert(res == 0); | |
1566 | ||
1567 | offset += shift; | |
1568 | head -= shift; | |
1569 | goto remap; | |
1570 | } | |
1571 | ||
1572 | size = event->header.size; | |
1573 | ||
1574 | ||
1575 | if (!size || process_event(event, offset, head) < 0) { | |
1576 | ||
1577 | /* | |
1578 | * assume we lost track of the stream, check alignment, and | |
1579 | * increment a single u64 in the hope to catch on again 'soon'. | |
1580 | */ | |
1581 | ||
1582 | if (unlikely(head & 7)) | |
1583 | head &= ~7ULL; | |
1584 | ||
1585 | size = 8; | |
1586 | } | |
1587 | ||
1588 | head += size; | |
1589 | ||
1590 | if (offset + head < (unsigned long)perf_stat.st_size) | |
1591 | goto more; | |
1592 | ||
1593 | rc = EXIT_SUCCESS; | |
1594 | close(input); | |
1595 | ||
1596 | return rc; | |
1597 | } | |
1598 | ||
46f392c9 | 1599 | static const char * const sched_usage[] = { |
c13f0d3c | 1600 | "perf sched [<options>] {record|latency|replay|trace}", |
0a02ad93 IM |
1601 | NULL |
1602 | }; | |
1603 | ||
f2858d8a IM |
1604 | static const struct option sched_options[] = { |
1605 | OPT_BOOLEAN('v', "verbose", &verbose, | |
1606 | "be more verbose (show symbol address, etc)"), | |
0a02ad93 IM |
1607 | OPT_BOOLEAN('D', "dump-raw-trace", &dump_trace, |
1608 | "dump raw trace in ASCII"), | |
f2858d8a IM |
1609 | OPT_END() |
1610 | }; | |
1611 | ||
1612 | static const char * const latency_usage[] = { | |
1613 | "perf sched latency [<options>]", | |
1614 | NULL | |
1615 | }; | |
1616 | ||
1617 | static const struct option latency_options[] = { | |
daa1d7a5 FW |
1618 | OPT_STRING('s', "sort", &sort_order, "key[,key2...]", |
1619 | "sort by key(s): runtime, switch, avg, max"), | |
0a02ad93 IM |
1620 | OPT_BOOLEAN('v', "verbose", &verbose, |
1621 | "be more verbose (show symbol address, etc)"), | |
f2858d8a IM |
1622 | OPT_BOOLEAN('D', "dump-raw-trace", &dump_trace, |
1623 | "dump raw trace in ASCII"), | |
1624 | OPT_END() | |
1625 | }; | |
1626 | ||
1627 | static const char * const replay_usage[] = { | |
1628 | "perf sched replay [<options>]", | |
1629 | NULL | |
1630 | }; | |
1631 | ||
1632 | static const struct option replay_options[] = { | |
1633 | OPT_INTEGER('r', "repeat", &replay_repeat, | |
1634 | "repeat the workload replay N times (-1: infinite)"), | |
1635 | OPT_BOOLEAN('v', "verbose", &verbose, | |
1636 | "be more verbose (show symbol address, etc)"), | |
1637 | OPT_BOOLEAN('D', "dump-raw-trace", &dump_trace, | |
1638 | "dump raw trace in ASCII"), | |
0a02ad93 IM |
1639 | OPT_END() |
1640 | }; | |
1641 | ||
daa1d7a5 FW |
1642 | static void setup_sorting(void) |
1643 | { | |
1644 | char *tmp, *tok, *str = strdup(sort_order); | |
1645 | ||
1646 | for (tok = strtok_r(str, ", ", &tmp); | |
1647 | tok; tok = strtok_r(NULL, ", ", &tmp)) { | |
1648 | if (sort_dimension__add(tok, &sort_list) < 0) { | |
1649 | error("Unknown --sort key: `%s'", tok); | |
f2858d8a | 1650 | usage_with_options(latency_usage, latency_options); |
daa1d7a5 FW |
1651 | } |
1652 | } | |
1653 | ||
1654 | free(str); | |
1655 | ||
1656 | sort_dimension__add((char *)"pid", &cmp_pid); | |
1657 | } | |
1658 | ||
1fc35b29 IM |
1659 | static const char *record_args[] = { |
1660 | "record", | |
1661 | "-a", | |
1662 | "-R", | |
d1302522 FW |
1663 | "-M", |
1664 | "-g", | |
1fc35b29 IM |
1665 | "-c", "1", |
1666 | "-e", "sched:sched_switch:r", | |
1667 | "-e", "sched:sched_stat_wait:r", | |
1668 | "-e", "sched:sched_stat_sleep:r", | |
1669 | "-e", "sched:sched_stat_iowait:r", | |
1670 | "-e", "sched:sched_process_exit:r", | |
1671 | "-e", "sched:sched_process_fork:r", | |
1672 | "-e", "sched:sched_wakeup:r", | |
1673 | "-e", "sched:sched_migrate_task:r", | |
1674 | }; | |
1675 | ||
1676 | static int __cmd_record(int argc, const char **argv) | |
1677 | { | |
1678 | unsigned int rec_argc, i, j; | |
1679 | const char **rec_argv; | |
1680 | ||
1681 | rec_argc = ARRAY_SIZE(record_args) + argc - 1; | |
1682 | rec_argv = calloc(rec_argc + 1, sizeof(char *)); | |
1683 | ||
1684 | for (i = 0; i < ARRAY_SIZE(record_args); i++) | |
1685 | rec_argv[i] = strdup(record_args[i]); | |
1686 | ||
1687 | for (j = 1; j < (unsigned int)argc; j++, i++) | |
1688 | rec_argv[i] = argv[j]; | |
1689 | ||
1690 | BUG_ON(i != rec_argc); | |
1691 | ||
1692 | return cmd_record(i, rec_argv, NULL); | |
1693 | } | |
1694 | ||
0a02ad93 IM |
1695 | int cmd_sched(int argc, const char **argv, const char *prefix __used) |
1696 | { | |
1697 | symbol__init(); | |
1698 | page_size = getpagesize(); | |
1699 | ||
f2858d8a IM |
1700 | argc = parse_options(argc, argv, sched_options, sched_usage, |
1701 | PARSE_OPT_STOP_AT_NON_OPTION); | |
1702 | if (!argc) | |
1703 | usage_with_options(sched_usage, sched_options); | |
0a02ad93 | 1704 | |
1fc35b29 IM |
1705 | if (!strncmp(argv[0], "rec", 3)) { |
1706 | return __cmd_record(argc, argv); | |
1707 | } else if (!strncmp(argv[0], "lat", 3)) { | |
cdce9d73 | 1708 | trace_handler = &lat_ops; |
f2858d8a IM |
1709 | if (argc > 1) { |
1710 | argc = parse_options(argc, argv, latency_options, latency_usage, 0); | |
1711 | if (argc) | |
1712 | usage_with_options(latency_usage, latency_options); | |
f2858d8a | 1713 | } |
b5fae128 | 1714 | setup_sorting(); |
46f392c9 | 1715 | __cmd_lat(); |
f2858d8a IM |
1716 | } else if (!strncmp(argv[0], "rep", 3)) { |
1717 | trace_handler = &replay_ops; | |
1718 | if (argc) { | |
1719 | argc = parse_options(argc, argv, replay_options, replay_usage, 0); | |
1720 | if (argc) | |
1721 | usage_with_options(replay_usage, replay_options); | |
1722 | } | |
1723 | __cmd_replay(); | |
c13f0d3c IM |
1724 | } else if (!strcmp(argv[0], "trace")) { |
1725 | /* | |
1726 | * Aliased to 'perf trace' for now: | |
1727 | */ | |
1728 | return cmd_trace(argc, argv, prefix); | |
f2858d8a IM |
1729 | } else { |
1730 | usage_with_options(sched_usage, sched_options); | |
1731 | } | |
1732 | ||
ec156764 | 1733 | return 0; |
0a02ad93 | 1734 | } |