Commit | Line | Data |
---|---|---|
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 | 13 | #include "util/debug.h" |
016e92fb | 14 | #include "util/data_map.h" |
0a02ad93 | 15 | |
ec156764 | 16 | #include <sys/types.h> |
b1ffe8f3 | 17 | #include <sys/prctl.h> |
0a02ad93 | 18 | |
b1ffe8f3 IM |
19 | #include <semaphore.h> |
20 | #include <pthread.h> | |
21 | #include <math.h> | |
419ab0d6 | 22 | |
ec156764 | 23 | static char const *input_name = "perf.data"; |
0a02ad93 | 24 | |
ec156764 | 25 | static unsigned long total_comm = 0; |
0a02ad93 | 26 | |
ec156764 IM |
27 | static struct rb_root threads; |
28 | static struct thread *last_match; | |
0a02ad93 | 29 | |
ec156764 IM |
30 | static struct perf_header *header; |
31 | static u64 sample_type; | |
0a02ad93 | 32 | |
daa1d7a5 FW |
33 | static char default_sort_order[] = "avg, max, switch, runtime"; |
34 | static char *sort_order = default_sort_order; | |
35 | ||
016e92fb FW |
36 | static char *cwd; |
37 | static int cwdlen; | |
38 | ||
b1ffe8f3 IM |
39 | #define PR_SET_NAME 15 /* Set process name */ |
40 | #define MAX_CPUS 4096 | |
0a02ad93 | 41 | |
b1ffe8f3 | 42 | #define BUG_ON(x) assert(!(x)) |
ec156764 | 43 | |
b1ffe8f3 IM |
44 | static u64 run_measurement_overhead; |
45 | static u64 sleep_measurement_overhead; | |
ec156764 | 46 | |
b1ffe8f3 IM |
47 | #define COMM_LEN 20 |
48 | #define SYM_LEN 129 | |
ec156764 | 49 | |
b1ffe8f3 | 50 | #define MAX_PID 65536 |
ec156764 | 51 | |
b1ffe8f3 | 52 | static unsigned long nr_tasks; |
ec156764 | 53 | |
39aeb52f | 54 | struct sched_atom; |
ec156764 | 55 | |
b1ffe8f3 IM |
56 | struct task_desc { |
57 | unsigned long nr; | |
58 | unsigned long pid; | |
59 | char comm[COMM_LEN]; | |
ec156764 | 60 | |
b1ffe8f3 IM |
61 | unsigned long nr_events; |
62 | unsigned long curr_event; | |
39aeb52f | 63 | struct sched_atom **atoms; |
b1ffe8f3 IM |
64 | |
65 | pthread_t thread; | |
66 | sem_t sleep_sem; | |
ec156764 | 67 | |
b1ffe8f3 IM |
68 | sem_t ready_for_work; |
69 | sem_t work_done_sem; | |
70 | ||
71 | u64 cpu_usage; | |
72 | }; | |
73 | ||
74 | enum sched_event_type { | |
75 | SCHED_EVENT_RUN, | |
76 | SCHED_EVENT_SLEEP, | |
77 | SCHED_EVENT_WAKEUP, | |
78 | }; | |
79 | ||
39aeb52f | 80 | struct sched_atom { |
b1ffe8f3 IM |
81 | enum sched_event_type type; |
82 | u64 timestamp; | |
83 | u64 duration; | |
84 | unsigned long nr; | |
85 | int specific_wait; | |
86 | sem_t *wait_sem; | |
87 | struct task_desc *wakee; | |
88 | }; | |
89 | ||
90 | static struct task_desc *pid_to_task[MAX_PID]; | |
91 | ||
92 | static struct task_desc **tasks; | |
93 | ||
94 | static pthread_mutex_t start_work_mutex = PTHREAD_MUTEX_INITIALIZER; | |
95 | static u64 start_time; | |
96 | ||
97 | static pthread_mutex_t work_done_wait_mutex = PTHREAD_MUTEX_INITIALIZER; | |
ec156764 | 98 | |
b1ffe8f3 IM |
99 | static unsigned long nr_run_events; |
100 | static unsigned long nr_sleep_events; | |
101 | static unsigned long nr_wakeup_events; | |
102 | ||
103 | static unsigned long nr_sleep_corrections; | |
104 | static unsigned long nr_run_events_optimized; | |
105 | ||
106 | static unsigned long targetless_wakeups; | |
107 | static unsigned long multitarget_wakeups; | |
108 | ||
109 | static u64 cpu_usage; | |
110 | static u64 runavg_cpu_usage; | |
111 | static u64 parent_cpu_usage; | |
112 | static u64 runavg_parent_cpu_usage; | |
113 | ||
114 | static unsigned long nr_runs; | |
115 | static u64 sum_runtime; | |
116 | static u64 sum_fluct; | |
117 | static u64 run_avg; | |
118 | ||
119 | static unsigned long replay_repeat = 10; | |
ea57c4f5 | 120 | static unsigned long nr_timestamps; |
dc02bf71 IM |
121 | static unsigned long nr_unordered_timestamps; |
122 | static unsigned long nr_state_machine_bugs; | |
c8a37751 | 123 | static unsigned long nr_context_switch_bugs; |
dc02bf71 IM |
124 | static unsigned long nr_events; |
125 | static unsigned long nr_lost_chunks; | |
126 | static unsigned long nr_lost_events; | |
b1ffe8f3 IM |
127 | |
128 | #define TASK_STATE_TO_CHAR_STR "RSDTtZX" | |
129 | ||
130 | enum thread_state { | |
131 | THREAD_SLEEPING = 0, | |
132 | THREAD_WAIT_CPU, | |
133 | THREAD_SCHED_IN, | |
134 | THREAD_IGNORE | |
135 | }; | |
136 | ||
137 | struct work_atom { | |
138 | struct list_head list; | |
139 | enum thread_state state; | |
aa1ab9d2 | 140 | u64 sched_out_time; |
b1ffe8f3 IM |
141 | u64 wake_up_time; |
142 | u64 sched_in_time; | |
143 | u64 runtime; | |
144 | }; | |
145 | ||
39aeb52f | 146 | struct work_atoms { |
147 | struct list_head work_list; | |
b1ffe8f3 IM |
148 | struct thread *thread; |
149 | struct rb_node node; | |
150 | u64 max_lat; | |
151 | u64 total_lat; | |
152 | u64 nb_atoms; | |
153 | u64 total_runtime; | |
154 | }; | |
155 | ||
39aeb52f | 156 | typedef int (*sort_fn_t)(struct work_atoms *, struct work_atoms *); |
b1ffe8f3 IM |
157 | |
158 | static struct rb_root atom_root, sorted_atom_root; | |
159 | ||
160 | static u64 all_runtime; | |
161 | static u64 all_count; | |
162 | ||
b1ffe8f3 IM |
163 | |
164 | static u64 get_nsecs(void) | |
ec156764 IM |
165 | { |
166 | struct timespec ts; | |
167 | ||
168 | clock_gettime(CLOCK_MONOTONIC, &ts); | |
169 | ||
170 | return ts.tv_sec * 1000000000ULL + ts.tv_nsec; | |
171 | } | |
172 | ||
b1ffe8f3 | 173 | static void burn_nsecs(u64 nsecs) |
ec156764 | 174 | { |
b1ffe8f3 | 175 | u64 T0 = get_nsecs(), T1; |
ec156764 IM |
176 | |
177 | do { | |
178 | T1 = get_nsecs(); | |
179 | } while (T1 + run_measurement_overhead < T0 + nsecs); | |
180 | } | |
181 | ||
b1ffe8f3 | 182 | static void sleep_nsecs(u64 nsecs) |
ec156764 IM |
183 | { |
184 | struct timespec ts; | |
185 | ||
186 | ts.tv_nsec = nsecs % 999999999; | |
187 | ts.tv_sec = nsecs / 999999999; | |
188 | ||
189 | nanosleep(&ts, NULL); | |
190 | } | |
191 | ||
192 | static void calibrate_run_measurement_overhead(void) | |
193 | { | |
b1ffe8f3 | 194 | u64 T0, T1, delta, min_delta = 1000000000ULL; |
ec156764 IM |
195 | int i; |
196 | ||
197 | for (i = 0; i < 10; i++) { | |
198 | T0 = get_nsecs(); | |
199 | burn_nsecs(0); | |
200 | T1 = get_nsecs(); | |
201 | delta = T1-T0; | |
202 | min_delta = min(min_delta, delta); | |
203 | } | |
204 | run_measurement_overhead = min_delta; | |
205 | ||
ad236fd2 | 206 | printf("run measurement overhead: %Ld nsecs\n", min_delta); |
ec156764 IM |
207 | } |
208 | ||
209 | static void calibrate_sleep_measurement_overhead(void) | |
210 | { | |
b1ffe8f3 | 211 | u64 T0, T1, delta, min_delta = 1000000000ULL; |
ec156764 IM |
212 | int i; |
213 | ||
214 | for (i = 0; i < 10; i++) { | |
215 | T0 = get_nsecs(); | |
216 | sleep_nsecs(10000); | |
217 | T1 = get_nsecs(); | |
218 | delta = T1-T0; | |
219 | min_delta = min(min_delta, delta); | |
220 | } | |
221 | min_delta -= 10000; | |
222 | sleep_measurement_overhead = min_delta; | |
223 | ||
ad236fd2 | 224 | printf("sleep measurement overhead: %Ld nsecs\n", min_delta); |
ec156764 IM |
225 | } |
226 | ||
39aeb52f | 227 | static struct sched_atom * |
b1ffe8f3 | 228 | get_new_event(struct task_desc *task, u64 timestamp) |
ec156764 | 229 | { |
39aeb52f | 230 | struct sched_atom *event = calloc(1, sizeof(*event)); |
ec156764 IM |
231 | unsigned long idx = task->nr_events; |
232 | size_t size; | |
233 | ||
234 | event->timestamp = timestamp; | |
235 | event->nr = idx; | |
236 | ||
237 | task->nr_events++; | |
39aeb52f | 238 | size = sizeof(struct sched_atom *) * task->nr_events; |
239 | task->atoms = realloc(task->atoms, size); | |
240 | BUG_ON(!task->atoms); | |
ec156764 | 241 | |
39aeb52f | 242 | task->atoms[idx] = event; |
ec156764 IM |
243 | |
244 | return event; | |
245 | } | |
246 | ||
39aeb52f | 247 | static struct sched_atom *last_event(struct task_desc *task) |
ec156764 IM |
248 | { |
249 | if (!task->nr_events) | |
250 | return NULL; | |
251 | ||
39aeb52f | 252 | return task->atoms[task->nr_events - 1]; |
ec156764 IM |
253 | } |
254 | ||
255 | static void | |
b1ffe8f3 | 256 | add_sched_event_run(struct task_desc *task, u64 timestamp, u64 duration) |
ec156764 | 257 | { |
39aeb52f | 258 | struct sched_atom *event, *curr_event = last_event(task); |
ec156764 IM |
259 | |
260 | /* | |
fbf94829 IM |
261 | * optimize an existing RUN event by merging this one |
262 | * to it: | |
263 | */ | |
ec156764 IM |
264 | if (curr_event && curr_event->type == SCHED_EVENT_RUN) { |
265 | nr_run_events_optimized++; | |
266 | curr_event->duration += duration; | |
267 | return; | |
268 | } | |
269 | ||
270 | event = get_new_event(task, timestamp); | |
271 | ||
272 | event->type = SCHED_EVENT_RUN; | |
273 | event->duration = duration; | |
274 | ||
275 | nr_run_events++; | |
276 | } | |
277 | ||
ec156764 | 278 | static void |
b1ffe8f3 | 279 | add_sched_event_wakeup(struct task_desc *task, u64 timestamp, |
ec156764 IM |
280 | struct task_desc *wakee) |
281 | { | |
39aeb52f | 282 | struct sched_atom *event, *wakee_event; |
ec156764 IM |
283 | |
284 | event = get_new_event(task, timestamp); | |
285 | event->type = SCHED_EVENT_WAKEUP; | |
286 | event->wakee = wakee; | |
287 | ||
288 | wakee_event = last_event(wakee); | |
289 | if (!wakee_event || wakee_event->type != SCHED_EVENT_SLEEP) { | |
290 | targetless_wakeups++; | |
291 | return; | |
292 | } | |
293 | if (wakee_event->wait_sem) { | |
294 | multitarget_wakeups++; | |
295 | return; | |
296 | } | |
297 | ||
298 | wakee_event->wait_sem = calloc(1, sizeof(*wakee_event->wait_sem)); | |
299 | sem_init(wakee_event->wait_sem, 0, 0); | |
300 | wakee_event->specific_wait = 1; | |
301 | event->wait_sem = wakee_event->wait_sem; | |
302 | ||
303 | nr_wakeup_events++; | |
304 | } | |
305 | ||
306 | static void | |
b1ffe8f3 | 307 | add_sched_event_sleep(struct task_desc *task, u64 timestamp, |
ad236fd2 | 308 | u64 task_state __used) |
ec156764 | 309 | { |
39aeb52f | 310 | struct sched_atom *event = get_new_event(task, timestamp); |
ec156764 IM |
311 | |
312 | event->type = SCHED_EVENT_SLEEP; | |
313 | ||
314 | nr_sleep_events++; | |
315 | } | |
316 | ||
317 | static struct task_desc *register_pid(unsigned long pid, const char *comm) | |
318 | { | |
319 | struct task_desc *task; | |
320 | ||
321 | BUG_ON(pid >= MAX_PID); | |
322 | ||
323 | task = pid_to_task[pid]; | |
324 | ||
325 | if (task) | |
326 | return task; | |
327 | ||
328 | task = calloc(1, sizeof(*task)); | |
329 | task->pid = pid; | |
330 | task->nr = nr_tasks; | |
331 | strcpy(task->comm, comm); | |
332 | /* | |
333 | * every task starts in sleeping state - this gets ignored | |
334 | * if there's no wakeup pointing to this sleep state: | |
335 | */ | |
336 | add_sched_event_sleep(task, 0, 0); | |
337 | ||
338 | pid_to_task[pid] = task; | |
339 | nr_tasks++; | |
340 | tasks = realloc(tasks, nr_tasks*sizeof(struct task_task *)); | |
341 | BUG_ON(!tasks); | |
342 | tasks[task->nr] = task; | |
343 | ||
ad236fd2 IM |
344 | if (verbose) |
345 | printf("registered task #%ld, PID %ld (%s)\n", nr_tasks, pid, comm); | |
ec156764 IM |
346 | |
347 | return task; | |
348 | } | |
349 | ||
350 | ||
ec156764 IM |
351 | static void print_task_traces(void) |
352 | { | |
353 | struct task_desc *task; | |
354 | unsigned long i; | |
355 | ||
356 | for (i = 0; i < nr_tasks; i++) { | |
357 | task = tasks[i]; | |
ad236fd2 | 358 | printf("task %6ld (%20s:%10ld), nr_events: %ld\n", |
ec156764 IM |
359 | task->nr, task->comm, task->pid, task->nr_events); |
360 | } | |
361 | } | |
362 | ||
363 | static void add_cross_task_wakeups(void) | |
364 | { | |
365 | struct task_desc *task1, *task2; | |
366 | unsigned long i, j; | |
367 | ||
368 | for (i = 0; i < nr_tasks; i++) { | |
369 | task1 = tasks[i]; | |
370 | j = i + 1; | |
371 | if (j == nr_tasks) | |
372 | j = 0; | |
373 | task2 = tasks[j]; | |
374 | add_sched_event_wakeup(task1, 0, task2); | |
375 | } | |
376 | } | |
377 | ||
378 | static void | |
39aeb52f | 379 | process_sched_event(struct task_desc *this_task __used, struct sched_atom *atom) |
ec156764 IM |
380 | { |
381 | int ret = 0; | |
b1ffe8f3 | 382 | u64 now; |
ec156764 IM |
383 | long long delta; |
384 | ||
385 | now = get_nsecs(); | |
39aeb52f | 386 | delta = start_time + atom->timestamp - now; |
ec156764 | 387 | |
39aeb52f | 388 | switch (atom->type) { |
ec156764 | 389 | case SCHED_EVENT_RUN: |
39aeb52f | 390 | burn_nsecs(atom->duration); |
ec156764 IM |
391 | break; |
392 | case SCHED_EVENT_SLEEP: | |
39aeb52f | 393 | if (atom->wait_sem) |
394 | ret = sem_wait(atom->wait_sem); | |
ec156764 IM |
395 | BUG_ON(ret); |
396 | break; | |
397 | case SCHED_EVENT_WAKEUP: | |
39aeb52f | 398 | if (atom->wait_sem) |
399 | ret = sem_post(atom->wait_sem); | |
ec156764 IM |
400 | BUG_ON(ret); |
401 | break; | |
402 | default: | |
403 | BUG_ON(1); | |
404 | } | |
405 | } | |
406 | ||
b1ffe8f3 | 407 | static u64 get_cpu_usage_nsec_parent(void) |
ec156764 IM |
408 | { |
409 | struct rusage ru; | |
b1ffe8f3 | 410 | u64 sum; |
ec156764 IM |
411 | int err; |
412 | ||
413 | err = getrusage(RUSAGE_SELF, &ru); | |
414 | BUG_ON(err); | |
415 | ||
416 | sum = ru.ru_utime.tv_sec*1e9 + ru.ru_utime.tv_usec*1e3; | |
417 | sum += ru.ru_stime.tv_sec*1e9 + ru.ru_stime.tv_usec*1e3; | |
418 | ||
419 | return sum; | |
420 | } | |
421 | ||
b1ffe8f3 | 422 | static u64 get_cpu_usage_nsec_self(void) |
ec156764 IM |
423 | { |
424 | char filename [] = "/proc/1234567890/sched"; | |
425 | unsigned long msecs, nsecs; | |
426 | char *line = NULL; | |
b1ffe8f3 | 427 | u64 total = 0; |
ec156764 IM |
428 | size_t len = 0; |
429 | ssize_t chars; | |
430 | FILE *file; | |
431 | int ret; | |
432 | ||
433 | sprintf(filename, "/proc/%d/sched", getpid()); | |
434 | file = fopen(filename, "r"); | |
435 | BUG_ON(!file); | |
436 | ||
437 | while ((chars = getline(&line, &len, file)) != -1) { | |
ec156764 IM |
438 | ret = sscanf(line, "se.sum_exec_runtime : %ld.%06ld\n", |
439 | &msecs, &nsecs); | |
440 | if (ret == 2) { | |
441 | total = msecs*1e6 + nsecs; | |
ec156764 IM |
442 | break; |
443 | } | |
444 | } | |
445 | if (line) | |
446 | free(line); | |
447 | fclose(file); | |
448 | ||
449 | return total; | |
450 | } | |
451 | ||
452 | static void *thread_func(void *ctx) | |
453 | { | |
454 | struct task_desc *this_task = ctx; | |
b1ffe8f3 | 455 | u64 cpu_usage_0, cpu_usage_1; |
ec156764 IM |
456 | unsigned long i, ret; |
457 | char comm2[22]; | |
458 | ||
ec156764 IM |
459 | sprintf(comm2, ":%s", this_task->comm); |
460 | prctl(PR_SET_NAME, comm2); | |
461 | ||
462 | again: | |
463 | ret = sem_post(&this_task->ready_for_work); | |
464 | BUG_ON(ret); | |
ec156764 IM |
465 | ret = pthread_mutex_lock(&start_work_mutex); |
466 | BUG_ON(ret); | |
467 | ret = pthread_mutex_unlock(&start_work_mutex); | |
468 | BUG_ON(ret); | |
ec156764 IM |
469 | |
470 | cpu_usage_0 = get_cpu_usage_nsec_self(); | |
471 | ||
472 | for (i = 0; i < this_task->nr_events; i++) { | |
473 | this_task->curr_event = i; | |
39aeb52f | 474 | process_sched_event(this_task, this_task->atoms[i]); |
ec156764 IM |
475 | } |
476 | ||
477 | cpu_usage_1 = get_cpu_usage_nsec_self(); | |
478 | this_task->cpu_usage = cpu_usage_1 - cpu_usage_0; | |
479 | ||
ec156764 IM |
480 | ret = sem_post(&this_task->work_done_sem); |
481 | BUG_ON(ret); | |
ec156764 IM |
482 | |
483 | ret = pthread_mutex_lock(&work_done_wait_mutex); | |
484 | BUG_ON(ret); | |
485 | ret = pthread_mutex_unlock(&work_done_wait_mutex); | |
486 | BUG_ON(ret); | |
ec156764 IM |
487 | |
488 | goto again; | |
489 | } | |
490 | ||
491 | static void create_tasks(void) | |
492 | { | |
493 | struct task_desc *task; | |
494 | pthread_attr_t attr; | |
495 | unsigned long i; | |
496 | int err; | |
497 | ||
498 | err = pthread_attr_init(&attr); | |
499 | BUG_ON(err); | |
500 | err = pthread_attr_setstacksize(&attr, (size_t)(16*1024)); | |
501 | BUG_ON(err); | |
502 | err = pthread_mutex_lock(&start_work_mutex); | |
503 | BUG_ON(err); | |
504 | err = pthread_mutex_lock(&work_done_wait_mutex); | |
505 | BUG_ON(err); | |
506 | for (i = 0; i < nr_tasks; i++) { | |
507 | task = tasks[i]; | |
508 | sem_init(&task->sleep_sem, 0, 0); | |
509 | sem_init(&task->ready_for_work, 0, 0); | |
510 | sem_init(&task->work_done_sem, 0, 0); | |
511 | task->curr_event = 0; | |
512 | err = pthread_create(&task->thread, &attr, thread_func, task); | |
513 | BUG_ON(err); | |
514 | } | |
515 | } | |
516 | ||
ec156764 IM |
517 | static void wait_for_tasks(void) |
518 | { | |
b1ffe8f3 | 519 | u64 cpu_usage_0, cpu_usage_1; |
ec156764 IM |
520 | struct task_desc *task; |
521 | unsigned long i, ret; | |
522 | ||
ec156764 | 523 | start_time = get_nsecs(); |
ec156764 IM |
524 | cpu_usage = 0; |
525 | pthread_mutex_unlock(&work_done_wait_mutex); | |
526 | ||
527 | for (i = 0; i < nr_tasks; i++) { | |
528 | task = tasks[i]; | |
529 | ret = sem_wait(&task->ready_for_work); | |
530 | BUG_ON(ret); | |
531 | sem_init(&task->ready_for_work, 0, 0); | |
532 | } | |
533 | ret = pthread_mutex_lock(&work_done_wait_mutex); | |
534 | BUG_ON(ret); | |
535 | ||
536 | cpu_usage_0 = get_cpu_usage_nsec_parent(); | |
537 | ||
538 | pthread_mutex_unlock(&start_work_mutex); | |
539 | ||
ec156764 IM |
540 | for (i = 0; i < nr_tasks; i++) { |
541 | task = tasks[i]; | |
542 | ret = sem_wait(&task->work_done_sem); | |
543 | BUG_ON(ret); | |
544 | sem_init(&task->work_done_sem, 0, 0); | |
545 | cpu_usage += task->cpu_usage; | |
546 | task->cpu_usage = 0; | |
547 | } | |
548 | ||
549 | cpu_usage_1 = get_cpu_usage_nsec_parent(); | |
550 | if (!runavg_cpu_usage) | |
551 | runavg_cpu_usage = cpu_usage; | |
552 | runavg_cpu_usage = (runavg_cpu_usage*9 + cpu_usage)/10; | |
553 | ||
554 | parent_cpu_usage = cpu_usage_1 - cpu_usage_0; | |
555 | if (!runavg_parent_cpu_usage) | |
556 | runavg_parent_cpu_usage = parent_cpu_usage; | |
557 | runavg_parent_cpu_usage = (runavg_parent_cpu_usage*9 + | |
558 | parent_cpu_usage)/10; | |
559 | ||
560 | ret = pthread_mutex_lock(&start_work_mutex); | |
561 | BUG_ON(ret); | |
562 | ||
563 | for (i = 0; i < nr_tasks; i++) { | |
564 | task = tasks[i]; | |
565 | sem_init(&task->sleep_sem, 0, 0); | |
566 | task->curr_event = 0; | |
567 | } | |
568 | } | |
569 | ||
ec156764 IM |
570 | static void run_one_test(void) |
571 | { | |
b1ffe8f3 | 572 | u64 T0, T1, delta, avg_delta, fluct, std_dev; |
ec156764 IM |
573 | |
574 | T0 = get_nsecs(); | |
575 | wait_for_tasks(); | |
576 | T1 = get_nsecs(); | |
577 | ||
578 | delta = T1 - T0; | |
579 | sum_runtime += delta; | |
580 | nr_runs++; | |
581 | ||
582 | avg_delta = sum_runtime / nr_runs; | |
583 | if (delta < avg_delta) | |
584 | fluct = avg_delta - delta; | |
585 | else | |
586 | fluct = delta - avg_delta; | |
587 | sum_fluct += fluct; | |
588 | std_dev = sum_fluct / nr_runs / sqrt(nr_runs); | |
589 | if (!run_avg) | |
590 | run_avg = delta; | |
591 | run_avg = (run_avg*9 + delta)/10; | |
592 | ||
ad236fd2 | 593 | printf("#%-3ld: %0.3f, ", |
ec156764 IM |
594 | nr_runs, (double)delta/1000000.0); |
595 | ||
ad236fd2 | 596 | printf("ravg: %0.2f, ", |
ec156764 IM |
597 | (double)run_avg/1e6); |
598 | ||
ad236fd2 | 599 | printf("cpu: %0.2f / %0.2f", |
ec156764 IM |
600 | (double)cpu_usage/1e6, (double)runavg_cpu_usage/1e6); |
601 | ||
602 | #if 0 | |
603 | /* | |
fbf94829 IM |
604 | * rusage statistics done by the parent, these are less |
605 | * accurate than the sum_exec_runtime based statistics: | |
606 | */ | |
ad236fd2 | 607 | printf(" [%0.2f / %0.2f]", |
ec156764 IM |
608 | (double)parent_cpu_usage/1e6, |
609 | (double)runavg_parent_cpu_usage/1e6); | |
610 | #endif | |
611 | ||
ad236fd2 | 612 | printf("\n"); |
ec156764 IM |
613 | |
614 | if (nr_sleep_corrections) | |
ad236fd2 | 615 | printf(" (%ld sleep corrections)\n", nr_sleep_corrections); |
ec156764 IM |
616 | nr_sleep_corrections = 0; |
617 | } | |
618 | ||
619 | static void test_calibrations(void) | |
620 | { | |
b1ffe8f3 | 621 | u64 T0, T1; |
ec156764 IM |
622 | |
623 | T0 = get_nsecs(); | |
624 | burn_nsecs(1e6); | |
625 | T1 = get_nsecs(); | |
626 | ||
ad236fd2 | 627 | printf("the run test took %Ld nsecs\n", T1-T0); |
ec156764 IM |
628 | |
629 | T0 = get_nsecs(); | |
630 | sleep_nsecs(1e6); | |
631 | T1 = get_nsecs(); | |
632 | ||
ad236fd2 | 633 | printf("the sleep test took %Ld nsecs\n", T1-T0); |
ec156764 IM |
634 | } |
635 | ||
0a02ad93 IM |
636 | static int |
637 | process_comm_event(event_t *event, unsigned long offset, unsigned long head) | |
638 | { | |
639 | struct thread *thread; | |
640 | ||
97ea1a7f | 641 | thread = threads__findnew(event->comm.tid, &threads, &last_match); |
0a02ad93 | 642 | |
dc02bf71 | 643 | dump_printf("%p [%p]: perf_event_comm: %s:%d\n", |
0a02ad93 IM |
644 | (void *)(offset + head), |
645 | (void *)(long)(event->header.size), | |
646 | event->comm.comm, event->comm.pid); | |
647 | ||
648 | if (thread == NULL || | |
649 | thread__set_comm(thread, event->comm.comm)) { | |
dc02bf71 | 650 | dump_printf("problem processing perf_event_comm, skipping event.\n"); |
0a02ad93 IM |
651 | return -1; |
652 | } | |
653 | total_comm++; | |
654 | ||
655 | return 0; | |
656 | } | |
657 | ||
46538818 FW |
658 | |
659 | struct raw_event_sample { | |
660 | u32 size; | |
661 | char data[0]; | |
662 | }; | |
663 | ||
664 | #define FILL_FIELD(ptr, field, event, data) \ | |
665 | ptr.field = (typeof(ptr.field)) raw_field_value(event, #field, data) | |
666 | ||
667 | #define FILL_ARRAY(ptr, array, event, data) \ | |
668 | do { \ | |
669 | void *__array = raw_field_ptr(event, #array, data); \ | |
670 | memcpy(ptr.array, __array, sizeof(ptr.array)); \ | |
671 | } while(0) | |
672 | ||
673 | #define FILL_COMMON_FIELDS(ptr, event, data) \ | |
674 | do { \ | |
675 | FILL_FIELD(ptr, common_type, event, data); \ | |
676 | FILL_FIELD(ptr, common_flags, event, data); \ | |
677 | FILL_FIELD(ptr, common_preempt_count, event, data); \ | |
678 | FILL_FIELD(ptr, common_pid, event, data); \ | |
679 | FILL_FIELD(ptr, common_tgid, event, data); \ | |
680 | } while (0) | |
681 | ||
419ab0d6 FW |
682 | |
683 | ||
684 | struct trace_switch_event { | |
685 | u32 size; | |
686 | ||
687 | u16 common_type; | |
688 | u8 common_flags; | |
689 | u8 common_preempt_count; | |
690 | u32 common_pid; | |
691 | u32 common_tgid; | |
692 | ||
693 | char prev_comm[16]; | |
694 | u32 prev_pid; | |
695 | u32 prev_prio; | |
696 | u64 prev_state; | |
697 | char next_comm[16]; | |
698 | u32 next_pid; | |
699 | u32 next_prio; | |
700 | }; | |
701 | ||
39aeb52f | 702 | struct trace_runtime_event { |
703 | u32 size; | |
704 | ||
705 | u16 common_type; | |
706 | u8 common_flags; | |
707 | u8 common_preempt_count; | |
708 | u32 common_pid; | |
709 | u32 common_tgid; | |
710 | ||
711 | char comm[16]; | |
712 | u32 pid; | |
713 | u64 runtime; | |
714 | u64 vruntime; | |
715 | }; | |
419ab0d6 | 716 | |
fbf94829 IM |
717 | struct trace_wakeup_event { |
718 | u32 size; | |
719 | ||
720 | u16 common_type; | |
721 | u8 common_flags; | |
722 | u8 common_preempt_count; | |
723 | u32 common_pid; | |
724 | u32 common_tgid; | |
725 | ||
726 | char comm[16]; | |
727 | u32 pid; | |
728 | ||
729 | u32 prio; | |
730 | u32 success; | |
731 | u32 cpu; | |
732 | }; | |
733 | ||
419ab0d6 FW |
734 | struct trace_fork_event { |
735 | u32 size; | |
46538818 | 736 | |
419ab0d6 FW |
737 | u16 common_type; |
738 | u8 common_flags; | |
739 | u8 common_preempt_count; | |
740 | u32 common_pid; | |
741 | u32 common_tgid; | |
742 | ||
743 | char parent_comm[16]; | |
744 | u32 parent_pid; | |
745 | char child_comm[16]; | |
746 | u32 child_pid; | |
747 | }; | |
748 | ||
749 | struct trace_sched_handler { | |
750 | void (*switch_event)(struct trace_switch_event *, | |
751 | struct event *, | |
752 | int cpu, | |
753 | u64 timestamp, | |
754 | struct thread *thread); | |
755 | ||
39aeb52f | 756 | void (*runtime_event)(struct trace_runtime_event *, |
757 | struct event *, | |
758 | int cpu, | |
759 | u64 timestamp, | |
760 | struct thread *thread); | |
761 | ||
419ab0d6 FW |
762 | void (*wakeup_event)(struct trace_wakeup_event *, |
763 | struct event *, | |
764 | int cpu, | |
765 | u64 timestamp, | |
766 | struct thread *thread); | |
767 | ||
768 | void (*fork_event)(struct trace_fork_event *, | |
769 | struct event *, | |
770 | int cpu, | |
771 | u64 timestamp, | |
772 | struct thread *thread); | |
773 | }; | |
46538818 | 774 | |
46538818 | 775 | |
419ab0d6 FW |
776 | static void |
777 | replay_wakeup_event(struct trace_wakeup_event *wakeup_event, | |
778 | struct event *event, | |
779 | int cpu __used, | |
780 | u64 timestamp __used, | |
781 | struct thread *thread __used) | |
782 | { | |
783 | struct task_desc *waker, *wakee; | |
fbf94829 | 784 | |
ad236fd2 IM |
785 | if (verbose) { |
786 | printf("sched_wakeup event %p\n", event); | |
fbf94829 | 787 | |
ad236fd2 | 788 | printf(" ... pid %d woke up %s/%d\n", |
419ab0d6 FW |
789 | wakeup_event->common_pid, |
790 | wakeup_event->comm, | |
791 | wakeup_event->pid); | |
ad236fd2 | 792 | } |
fbf94829 | 793 | |
419ab0d6 FW |
794 | waker = register_pid(wakeup_event->common_pid, "<unknown>"); |
795 | wakee = register_pid(wakeup_event->pid, wakeup_event->comm); | |
fbf94829 IM |
796 | |
797 | add_sched_event_wakeup(waker, timestamp, wakee); | |
ec156764 IM |
798 | } |
799 | ||
d1153389 | 800 | static u64 cpu_last_switched[MAX_CPUS]; |
fbf94829 IM |
801 | |
802 | static void | |
419ab0d6 FW |
803 | replay_switch_event(struct trace_switch_event *switch_event, |
804 | struct event *event, | |
805 | int cpu, | |
806 | u64 timestamp, | |
807 | struct thread *thread __used) | |
ec156764 | 808 | { |
fbf94829 IM |
809 | struct task_desc *prev, *next; |
810 | u64 timestamp0; | |
811 | s64 delta; | |
812 | ||
ad236fd2 IM |
813 | if (verbose) |
814 | printf("sched_switch event %p\n", event); | |
815 | ||
fbf94829 IM |
816 | if (cpu >= MAX_CPUS || cpu < 0) |
817 | return; | |
818 | ||
819 | timestamp0 = cpu_last_switched[cpu]; | |
820 | if (timestamp0) | |
821 | delta = timestamp - timestamp0; | |
822 | else | |
823 | delta = 0; | |
824 | ||
825 | if (delta < 0) | |
826 | die("hm, delta: %Ld < 0 ?\n", delta); | |
827 | ||
ad236fd2 IM |
828 | if (verbose) { |
829 | printf(" ... switch from %s/%d to %s/%d [ran %Ld nsecs]\n", | |
419ab0d6 FW |
830 | switch_event->prev_comm, switch_event->prev_pid, |
831 | switch_event->next_comm, switch_event->next_pid, | |
ad236fd2 IM |
832 | delta); |
833 | } | |
fbf94829 | 834 | |
419ab0d6 FW |
835 | prev = register_pid(switch_event->prev_pid, switch_event->prev_comm); |
836 | next = register_pid(switch_event->next_pid, switch_event->next_comm); | |
fbf94829 IM |
837 | |
838 | cpu_last_switched[cpu] = timestamp; | |
839 | ||
840 | add_sched_event_run(prev, timestamp, delta); | |
419ab0d6 | 841 | add_sched_event_sleep(prev, timestamp, switch_event->prev_state); |
fbf94829 IM |
842 | } |
843 | ||
fbf94829 | 844 | |
419ab0d6 FW |
845 | static void |
846 | replay_fork_event(struct trace_fork_event *fork_event, | |
847 | struct event *event, | |
848 | int cpu __used, | |
849 | u64 timestamp __used, | |
850 | struct thread *thread __used) | |
851 | { | |
852 | if (verbose) { | |
853 | printf("sched_fork event %p\n", event); | |
854 | printf("... parent: %s/%d\n", fork_event->parent_comm, fork_event->parent_pid); | |
855 | printf("... child: %s/%d\n", fork_event->child_comm, fork_event->child_pid); | |
856 | } | |
857 | register_pid(fork_event->parent_pid, fork_event->parent_comm); | |
858 | register_pid(fork_event->child_pid, fork_event->child_comm); | |
859 | } | |
fbf94829 | 860 | |
419ab0d6 | 861 | static struct trace_sched_handler replay_ops = { |
ea92ed5a IM |
862 | .wakeup_event = replay_wakeup_event, |
863 | .switch_event = replay_switch_event, | |
864 | .fork_event = replay_fork_event, | |
fbf94829 IM |
865 | }; |
866 | ||
b1ffe8f3 IM |
867 | struct sort_dimension { |
868 | const char *name; | |
b5fae128 | 869 | sort_fn_t cmp; |
b1ffe8f3 IM |
870 | struct list_head list; |
871 | }; | |
872 | ||
873 | static LIST_HEAD(cmp_pid); | |
874 | ||
daa1d7a5 | 875 | static int |
39aeb52f | 876 | thread_lat_cmp(struct list_head *list, struct work_atoms *l, struct work_atoms *r) |
daa1d7a5 FW |
877 | { |
878 | struct sort_dimension *sort; | |
879 | int ret = 0; | |
880 | ||
b5fae128 IM |
881 | BUG_ON(list_empty(list)); |
882 | ||
daa1d7a5 FW |
883 | list_for_each_entry(sort, list, list) { |
884 | ret = sort->cmp(l, r); | |
885 | if (ret) | |
886 | return ret; | |
887 | } | |
888 | ||
889 | return ret; | |
890 | } | |
891 | ||
39aeb52f | 892 | static struct work_atoms * |
b5fae128 IM |
893 | thread_atoms_search(struct rb_root *root, struct thread *thread, |
894 | struct list_head *sort_list) | |
895 | { | |
896 | struct rb_node *node = root->rb_node; | |
39aeb52f | 897 | struct work_atoms key = { .thread = thread }; |
b5fae128 IM |
898 | |
899 | while (node) { | |
39aeb52f | 900 | struct work_atoms *atoms; |
b5fae128 IM |
901 | int cmp; |
902 | ||
39aeb52f | 903 | atoms = container_of(node, struct work_atoms, node); |
b5fae128 IM |
904 | |
905 | cmp = thread_lat_cmp(sort_list, &key, atoms); | |
906 | if (cmp > 0) | |
907 | node = node->rb_left; | |
908 | else if (cmp < 0) | |
909 | node = node->rb_right; | |
910 | else { | |
911 | BUG_ON(thread != atoms->thread); | |
912 | return atoms; | |
913 | } | |
914 | } | |
915 | return NULL; | |
916 | } | |
917 | ||
cdce9d73 | 918 | static void |
39aeb52f | 919 | __thread_latency_insert(struct rb_root *root, struct work_atoms *data, |
daa1d7a5 | 920 | struct list_head *sort_list) |
cdce9d73 FW |
921 | { |
922 | struct rb_node **new = &(root->rb_node), *parent = NULL; | |
923 | ||
924 | while (*new) { | |
39aeb52f | 925 | struct work_atoms *this; |
daa1d7a5 | 926 | int cmp; |
cdce9d73 | 927 | |
39aeb52f | 928 | this = container_of(*new, struct work_atoms, node); |
cdce9d73 | 929 | parent = *new; |
daa1d7a5 FW |
930 | |
931 | cmp = thread_lat_cmp(sort_list, data, this); | |
932 | ||
933 | if (cmp > 0) | |
cdce9d73 | 934 | new = &((*new)->rb_left); |
cdce9d73 | 935 | else |
daa1d7a5 | 936 | new = &((*new)->rb_right); |
cdce9d73 FW |
937 | } |
938 | ||
939 | rb_link_node(&data->node, parent, new); | |
940 | rb_insert_color(&data->node, root); | |
941 | } | |
942 | ||
b1ffe8f3 | 943 | static void thread_atoms_insert(struct thread *thread) |
cdce9d73 | 944 | { |
39aeb52f | 945 | struct work_atoms *atoms; |
b1ffe8f3 | 946 | |
17562205 FW |
947 | atoms = calloc(sizeof(*atoms), 1); |
948 | if (!atoms) | |
cdce9d73 FW |
949 | die("No memory"); |
950 | ||
17562205 | 951 | atoms->thread = thread; |
39aeb52f | 952 | INIT_LIST_HEAD(&atoms->work_list); |
b1ffe8f3 | 953 | __thread_latency_insert(&atom_root, atoms, &cmp_pid); |
cdce9d73 FW |
954 | } |
955 | ||
956 | static void | |
957 | latency_fork_event(struct trace_fork_event *fork_event __used, | |
958 | struct event *event __used, | |
959 | int cpu __used, | |
960 | u64 timestamp __used, | |
961 | struct thread *thread __used) | |
962 | { | |
963 | /* should insert the newcomer */ | |
964 | } | |
965 | ||
ea92ed5a | 966 | __used |
cdce9d73 FW |
967 | static char sched_out_state(struct trace_switch_event *switch_event) |
968 | { | |
969 | const char *str = TASK_STATE_TO_CHAR_STR; | |
970 | ||
971 | return str[switch_event->prev_state]; | |
972 | } | |
973 | ||
974 | static void | |
39aeb52f | 975 | add_sched_out_event(struct work_atoms *atoms, |
976 | char run_state, | |
977 | u64 timestamp) | |
cdce9d73 | 978 | { |
b1ffe8f3 | 979 | struct work_atom *atom; |
cdce9d73 | 980 | |
b1ffe8f3 IM |
981 | atom = calloc(sizeof(*atom), 1); |
982 | if (!atom) | |
cdce9d73 FW |
983 | die("Non memory"); |
984 | ||
aa1ab9d2 FW |
985 | atom->sched_out_time = timestamp; |
986 | ||
39aeb52f | 987 | if (run_state == 'R') { |
b1ffe8f3 | 988 | atom->state = THREAD_WAIT_CPU; |
aa1ab9d2 | 989 | atom->wake_up_time = atom->sched_out_time; |
c6ced611 FW |
990 | } |
991 | ||
39aeb52f | 992 | list_add_tail(&atom->list, &atoms->work_list); |
cdce9d73 FW |
993 | } |
994 | ||
995 | static void | |
39aeb52f | 996 | add_runtime_event(struct work_atoms *atoms, u64 delta, u64 timestamp __used) |
997 | { | |
998 | struct work_atom *atom; | |
999 | ||
1000 | BUG_ON(list_empty(&atoms->work_list)); | |
1001 | ||
1002 | atom = list_entry(atoms->work_list.prev, struct work_atom, list); | |
1003 | ||
1004 | atom->runtime += delta; | |
1005 | atoms->total_runtime += delta; | |
1006 | } | |
1007 | ||
1008 | static void | |
1009 | add_sched_in_event(struct work_atoms *atoms, u64 timestamp) | |
cdce9d73 | 1010 | { |
b1ffe8f3 | 1011 | struct work_atom *atom; |
66685678 | 1012 | u64 delta; |
cdce9d73 | 1013 | |
39aeb52f | 1014 | if (list_empty(&atoms->work_list)) |
cdce9d73 FW |
1015 | return; |
1016 | ||
39aeb52f | 1017 | atom = list_entry(atoms->work_list.prev, struct work_atom, list); |
cdce9d73 | 1018 | |
b1ffe8f3 | 1019 | if (atom->state != THREAD_WAIT_CPU) |
cdce9d73 FW |
1020 | return; |
1021 | ||
b1ffe8f3 IM |
1022 | if (timestamp < atom->wake_up_time) { |
1023 | atom->state = THREAD_IGNORE; | |
cdce9d73 FW |
1024 | return; |
1025 | } | |
1026 | ||
b1ffe8f3 IM |
1027 | atom->state = THREAD_SCHED_IN; |
1028 | atom->sched_in_time = timestamp; | |
66685678 | 1029 | |
b1ffe8f3 | 1030 | delta = atom->sched_in_time - atom->wake_up_time; |
66685678 FW |
1031 | atoms->total_lat += delta; |
1032 | if (delta > atoms->max_lat) | |
1033 | atoms->max_lat = delta; | |
1034 | atoms->nb_atoms++; | |
cdce9d73 FW |
1035 | } |
1036 | ||
cdce9d73 FW |
1037 | static void |
1038 | latency_switch_event(struct trace_switch_event *switch_event, | |
1039 | struct event *event __used, | |
ea92ed5a | 1040 | int cpu, |
cdce9d73 FW |
1041 | u64 timestamp, |
1042 | struct thread *thread __used) | |
1043 | { | |
39aeb52f | 1044 | struct work_atoms *out_events, *in_events; |
cdce9d73 | 1045 | struct thread *sched_out, *sched_in; |
ea92ed5a IM |
1046 | u64 timestamp0; |
1047 | s64 delta; | |
1048 | ||
39aeb52f | 1049 | BUG_ON(cpu >= MAX_CPUS || cpu < 0); |
ea92ed5a IM |
1050 | |
1051 | timestamp0 = cpu_last_switched[cpu]; | |
1052 | cpu_last_switched[cpu] = timestamp; | |
1053 | if (timestamp0) | |
1054 | delta = timestamp - timestamp0; | |
1055 | else | |
1056 | delta = 0; | |
1057 | ||
1058 | if (delta < 0) | |
1059 | die("hm, delta: %Ld < 0 ?\n", delta); | |
1060 | ||
cdce9d73 | 1061 | |
97ea1a7f FW |
1062 | sched_out = threads__findnew(switch_event->prev_pid, &threads, &last_match); |
1063 | sched_in = threads__findnew(switch_event->next_pid, &threads, &last_match); | |
cdce9d73 | 1064 | |
39aeb52f | 1065 | out_events = thread_atoms_search(&atom_root, sched_out, &cmp_pid); |
1066 | if (!out_events) { | |
1067 | thread_atoms_insert(sched_out); | |
1068 | out_events = thread_atoms_search(&atom_root, sched_out, &cmp_pid); | |
1069 | if (!out_events) | |
1070 | die("out-event: Internal tree error"); | |
1071 | } | |
1072 | add_sched_out_event(out_events, sched_out_state(switch_event), timestamp); | |
1073 | ||
1074 | in_events = thread_atoms_search(&atom_root, sched_in, &cmp_pid); | |
1075 | if (!in_events) { | |
b1ffe8f3 | 1076 | thread_atoms_insert(sched_in); |
39aeb52f | 1077 | in_events = thread_atoms_search(&atom_root, sched_in, &cmp_pid); |
1078 | if (!in_events) | |
1079 | die("in-event: Internal tree error"); | |
1080 | /* | |
1081 | * Take came in we have not heard about yet, | |
1082 | * add in an initial atom in runnable state: | |
1083 | */ | |
1084 | add_sched_out_event(in_events, 'R', timestamp); | |
cdce9d73 | 1085 | } |
39aeb52f | 1086 | add_sched_in_event(in_events, timestamp); |
1087 | } | |
cdce9d73 | 1088 | |
39aeb52f | 1089 | static void |
1090 | latency_runtime_event(struct trace_runtime_event *runtime_event, | |
1091 | struct event *event __used, | |
1092 | int cpu, | |
1093 | u64 timestamp, | |
1094 | struct thread *this_thread __used) | |
1095 | { | |
1096 | struct work_atoms *atoms; | |
1097 | struct thread *thread; | |
1098 | ||
1099 | BUG_ON(cpu >= MAX_CPUS || cpu < 0); | |
1100 | ||
1101 | thread = threads__findnew(runtime_event->pid, &threads, &last_match); | |
1102 | atoms = thread_atoms_search(&atom_root, thread, &cmp_pid); | |
1103 | if (!atoms) { | |
1104 | thread_atoms_insert(thread); | |
1105 | atoms = thread_atoms_search(&atom_root, thread, &cmp_pid); | |
1106 | if (!atoms) | |
1107 | die("in-event: Internal tree error"); | |
1108 | add_sched_out_event(atoms, 'R', timestamp); | |
cdce9d73 FW |
1109 | } |
1110 | ||
39aeb52f | 1111 | add_runtime_event(atoms, runtime_event->runtime, timestamp); |
cdce9d73 FW |
1112 | } |
1113 | ||
1114 | static void | |
1115 | latency_wakeup_event(struct trace_wakeup_event *wakeup_event, | |
39aeb52f | 1116 | struct event *__event __used, |
cdce9d73 FW |
1117 | int cpu __used, |
1118 | u64 timestamp, | |
1119 | struct thread *thread __used) | |
1120 | { | |
39aeb52f | 1121 | struct work_atoms *atoms; |
b1ffe8f3 | 1122 | struct work_atom *atom; |
cdce9d73 FW |
1123 | struct thread *wakee; |
1124 | ||
1125 | /* Note for later, it may be interesting to observe the failing cases */ | |
1126 | if (!wakeup_event->success) | |
1127 | return; | |
1128 | ||
97ea1a7f | 1129 | wakee = threads__findnew(wakeup_event->pid, &threads, &last_match); |
b5fae128 | 1130 | atoms = thread_atoms_search(&atom_root, wakee, &cmp_pid); |
17562205 | 1131 | if (!atoms) { |
b1ffe8f3 | 1132 | thread_atoms_insert(wakee); |
39aeb52f | 1133 | atoms = thread_atoms_search(&atom_root, wakee, &cmp_pid); |
1134 | if (!atoms) | |
1135 | die("wakeup-event: Internal tree error"); | |
1136 | add_sched_out_event(atoms, 'S', timestamp); | |
cdce9d73 FW |
1137 | } |
1138 | ||
39aeb52f | 1139 | BUG_ON(list_empty(&atoms->work_list)); |
cdce9d73 | 1140 | |
39aeb52f | 1141 | atom = list_entry(atoms->work_list.prev, struct work_atom, list); |
cdce9d73 | 1142 | |
dc02bf71 IM |
1143 | if (atom->state != THREAD_SLEEPING) |
1144 | nr_state_machine_bugs++; | |
cdce9d73 | 1145 | |
ea57c4f5 IM |
1146 | nr_timestamps++; |
1147 | if (atom->sched_out_time > timestamp) { | |
dc02bf71 | 1148 | nr_unordered_timestamps++; |
aa1ab9d2 | 1149 | return; |
ea57c4f5 | 1150 | } |
aa1ab9d2 | 1151 | |
b1ffe8f3 IM |
1152 | atom->state = THREAD_WAIT_CPU; |
1153 | atom->wake_up_time = timestamp; | |
cdce9d73 FW |
1154 | } |
1155 | ||
1156 | static struct trace_sched_handler lat_ops = { | |
ea92ed5a IM |
1157 | .wakeup_event = latency_wakeup_event, |
1158 | .switch_event = latency_switch_event, | |
39aeb52f | 1159 | .runtime_event = latency_runtime_event, |
ea92ed5a | 1160 | .fork_event = latency_fork_event, |
cdce9d73 FW |
1161 | }; |
1162 | ||
39aeb52f | 1163 | static void output_lat_thread(struct work_atoms *work_list) |
cdce9d73 | 1164 | { |
cdce9d73 FW |
1165 | int i; |
1166 | int ret; | |
66685678 | 1167 | u64 avg; |
cdce9d73 | 1168 | |
39aeb52f | 1169 | if (!work_list->nb_atoms) |
cdce9d73 | 1170 | return; |
ea57c4f5 IM |
1171 | /* |
1172 | * Ignore idle threads: | |
1173 | */ | |
80ed0987 | 1174 | if (!strcmp(work_list->thread->comm, "swapper")) |
ea57c4f5 | 1175 | return; |
cdce9d73 | 1176 | |
39aeb52f | 1177 | all_runtime += work_list->total_runtime; |
1178 | all_count += work_list->nb_atoms; | |
66685678 | 1179 | |
80ed0987 | 1180 | ret = printf(" %s:%d ", work_list->thread->comm, work_list->thread->pid); |
cdce9d73 | 1181 | |
08f69e6c | 1182 | for (i = 0; i < 24 - ret; i++) |
cdce9d73 FW |
1183 | printf(" "); |
1184 | ||
39aeb52f | 1185 | avg = work_list->total_lat / work_list->nb_atoms; |
cdce9d73 | 1186 | |
dc02bf71 | 1187 | printf("|%11.3f ms |%9llu | avg:%9.3f ms | max:%9.3f ms |\n", |
39aeb52f | 1188 | (double)work_list->total_runtime / 1e6, |
1189 | work_list->nb_atoms, (double)avg / 1e6, | |
1190 | (double)work_list->max_lat / 1e6); | |
cdce9d73 FW |
1191 | } |
1192 | ||
39aeb52f | 1193 | static int pid_cmp(struct work_atoms *l, struct work_atoms *r) |
daa1d7a5 | 1194 | { |
daa1d7a5 FW |
1195 | if (l->thread->pid < r->thread->pid) |
1196 | return -1; | |
1197 | if (l->thread->pid > r->thread->pid) | |
1198 | return 1; | |
1199 | ||
1200 | return 0; | |
1201 | } | |
1202 | ||
1203 | static struct sort_dimension pid_sort_dimension = { | |
b5fae128 IM |
1204 | .name = "pid", |
1205 | .cmp = pid_cmp, | |
daa1d7a5 FW |
1206 | }; |
1207 | ||
39aeb52f | 1208 | static int avg_cmp(struct work_atoms *l, struct work_atoms *r) |
daa1d7a5 FW |
1209 | { |
1210 | u64 avgl, avgr; | |
1211 | ||
1212 | if (!l->nb_atoms) | |
1213 | return -1; | |
1214 | ||
1215 | if (!r->nb_atoms) | |
1216 | return 1; | |
1217 | ||
1218 | avgl = l->total_lat / l->nb_atoms; | |
1219 | avgr = r->total_lat / r->nb_atoms; | |
1220 | ||
1221 | if (avgl < avgr) | |
1222 | return -1; | |
1223 | if (avgl > avgr) | |
1224 | return 1; | |
1225 | ||
1226 | return 0; | |
1227 | } | |
1228 | ||
1229 | static struct sort_dimension avg_sort_dimension = { | |
b5fae128 IM |
1230 | .name = "avg", |
1231 | .cmp = avg_cmp, | |
daa1d7a5 FW |
1232 | }; |
1233 | ||
39aeb52f | 1234 | static int max_cmp(struct work_atoms *l, struct work_atoms *r) |
daa1d7a5 FW |
1235 | { |
1236 | if (l->max_lat < r->max_lat) | |
1237 | return -1; | |
1238 | if (l->max_lat > r->max_lat) | |
1239 | return 1; | |
1240 | ||
1241 | return 0; | |
1242 | } | |
1243 | ||
1244 | static struct sort_dimension max_sort_dimension = { | |
b5fae128 IM |
1245 | .name = "max", |
1246 | .cmp = max_cmp, | |
daa1d7a5 FW |
1247 | }; |
1248 | ||
39aeb52f | 1249 | static int switch_cmp(struct work_atoms *l, struct work_atoms *r) |
daa1d7a5 FW |
1250 | { |
1251 | if (l->nb_atoms < r->nb_atoms) | |
1252 | return -1; | |
1253 | if (l->nb_atoms > r->nb_atoms) | |
1254 | return 1; | |
1255 | ||
1256 | return 0; | |
1257 | } | |
1258 | ||
1259 | static struct sort_dimension switch_sort_dimension = { | |
b5fae128 IM |
1260 | .name = "switch", |
1261 | .cmp = switch_cmp, | |
daa1d7a5 FW |
1262 | }; |
1263 | ||
39aeb52f | 1264 | static int runtime_cmp(struct work_atoms *l, struct work_atoms *r) |
daa1d7a5 FW |
1265 | { |
1266 | if (l->total_runtime < r->total_runtime) | |
1267 | return -1; | |
1268 | if (l->total_runtime > r->total_runtime) | |
1269 | return 1; | |
1270 | ||
1271 | return 0; | |
1272 | } | |
1273 | ||
1274 | static struct sort_dimension runtime_sort_dimension = { | |
b5fae128 IM |
1275 | .name = "runtime", |
1276 | .cmp = runtime_cmp, | |
daa1d7a5 FW |
1277 | }; |
1278 | ||
1279 | static struct sort_dimension *available_sorts[] = { | |
1280 | &pid_sort_dimension, | |
1281 | &avg_sort_dimension, | |
1282 | &max_sort_dimension, | |
1283 | &switch_sort_dimension, | |
1284 | &runtime_sort_dimension, | |
1285 | }; | |
1286 | ||
1287 | #define NB_AVAILABLE_SORTS (int)(sizeof(available_sorts) / sizeof(struct sort_dimension *)) | |
1288 | ||
1289 | static LIST_HEAD(sort_list); | |
1290 | ||
1291 | static int sort_dimension__add(char *tok, struct list_head *list) | |
1292 | { | |
1293 | int i; | |
1294 | ||
1295 | for (i = 0; i < NB_AVAILABLE_SORTS; i++) { | |
1296 | if (!strcmp(available_sorts[i]->name, tok)) { | |
1297 | list_add_tail(&available_sorts[i]->list, list); | |
1298 | ||
1299 | return 0; | |
1300 | } | |
1301 | } | |
1302 | ||
1303 | return -1; | |
1304 | } | |
1305 | ||
1306 | static void setup_sorting(void); | |
1307 | ||
1308 | static void sort_lat(void) | |
1309 | { | |
1310 | struct rb_node *node; | |
1311 | ||
1312 | for (;;) { | |
39aeb52f | 1313 | struct work_atoms *data; |
b1ffe8f3 | 1314 | node = rb_first(&atom_root); |
daa1d7a5 FW |
1315 | if (!node) |
1316 | break; | |
1317 | ||
b1ffe8f3 | 1318 | rb_erase(node, &atom_root); |
39aeb52f | 1319 | data = rb_entry(node, struct work_atoms, node); |
b1ffe8f3 | 1320 | __thread_latency_insert(&sorted_atom_root, data, &sort_list); |
daa1d7a5 FW |
1321 | } |
1322 | } | |
1323 | ||
419ab0d6 FW |
1324 | static struct trace_sched_handler *trace_handler; |
1325 | ||
fbf94829 | 1326 | static void |
419ab0d6 FW |
1327 | process_sched_wakeup_event(struct raw_event_sample *raw, |
1328 | struct event *event, | |
1329 | int cpu __used, | |
1330 | u64 timestamp __used, | |
1331 | struct thread *thread __used) | |
1332 | { | |
1333 | struct trace_wakeup_event wakeup_event; | |
1334 | ||
1335 | FILL_COMMON_FIELDS(wakeup_event, event, raw->data); | |
1336 | ||
1337 | FILL_ARRAY(wakeup_event, comm, event, raw->data); | |
1338 | FILL_FIELD(wakeup_event, pid, event, raw->data); | |
1339 | FILL_FIELD(wakeup_event, prio, event, raw->data); | |
1340 | FILL_FIELD(wakeup_event, success, event, raw->data); | |
1341 | FILL_FIELD(wakeup_event, cpu, event, raw->data); | |
1342 | ||
0ec04e16 IM |
1343 | if (trace_handler->wakeup_event) |
1344 | trace_handler->wakeup_event(&wakeup_event, event, cpu, timestamp, thread); | |
419ab0d6 FW |
1345 | } |
1346 | ||
c8a37751 IM |
1347 | /* |
1348 | * Track the current task - that way we can know whether there's any | |
1349 | * weird events, such as a task being switched away that is not current. | |
1350 | */ | |
40749d0f | 1351 | static int max_cpu; |
0ec04e16 | 1352 | |
c8a37751 IM |
1353 | static u32 curr_pid[MAX_CPUS] = { [0 ... MAX_CPUS-1] = -1 }; |
1354 | ||
0ec04e16 IM |
1355 | static struct thread *curr_thread[MAX_CPUS]; |
1356 | ||
1357 | static char next_shortname1 = 'A'; | |
1358 | static char next_shortname2 = '0'; | |
1359 | ||
1360 | static void | |
1361 | map_switch_event(struct trace_switch_event *switch_event, | |
1362 | struct event *event __used, | |
1363 | int this_cpu, | |
1364 | u64 timestamp, | |
1365 | struct thread *thread __used) | |
1366 | { | |
1367 | struct thread *sched_out, *sched_in; | |
1368 | int new_shortname; | |
1369 | u64 timestamp0; | |
1370 | s64 delta; | |
1371 | int cpu; | |
1372 | ||
1373 | BUG_ON(this_cpu >= MAX_CPUS || this_cpu < 0); | |
1374 | ||
1375 | if (this_cpu > max_cpu) | |
1376 | max_cpu = this_cpu; | |
1377 | ||
1378 | timestamp0 = cpu_last_switched[this_cpu]; | |
1379 | cpu_last_switched[this_cpu] = timestamp; | |
1380 | if (timestamp0) | |
1381 | delta = timestamp - timestamp0; | |
1382 | else | |
1383 | delta = 0; | |
1384 | ||
1385 | if (delta < 0) | |
1386 | die("hm, delta: %Ld < 0 ?\n", delta); | |
1387 | ||
1388 | ||
97ea1a7f FW |
1389 | sched_out = threads__findnew(switch_event->prev_pid, &threads, &last_match); |
1390 | sched_in = threads__findnew(switch_event->next_pid, &threads, &last_match); | |
0ec04e16 IM |
1391 | |
1392 | curr_thread[this_cpu] = sched_in; | |
1393 | ||
1394 | printf(" "); | |
1395 | ||
1396 | new_shortname = 0; | |
1397 | if (!sched_in->shortname[0]) { | |
1398 | sched_in->shortname[0] = next_shortname1; | |
1399 | sched_in->shortname[1] = next_shortname2; | |
1400 | ||
1401 | if (next_shortname1 < 'Z') { | |
1402 | next_shortname1++; | |
1403 | } else { | |
1404 | next_shortname1='A'; | |
1405 | if (next_shortname2 < '9') { | |
1406 | next_shortname2++; | |
1407 | } else { | |
1408 | next_shortname2='0'; | |
1409 | } | |
1410 | } | |
1411 | new_shortname = 1; | |
1412 | } | |
1413 | ||
1414 | for (cpu = 0; cpu <= max_cpu; cpu++) { | |
1415 | if (cpu != this_cpu) | |
1416 | printf(" "); | |
1417 | else | |
1418 | printf("*"); | |
1419 | ||
1420 | if (curr_thread[cpu]) { | |
1421 | if (curr_thread[cpu]->pid) | |
1422 | printf("%2s ", curr_thread[cpu]->shortname); | |
1423 | else | |
1424 | printf(". "); | |
1425 | } else | |
1426 | printf(" "); | |
1427 | } | |
1428 | ||
1429 | printf(" %12.6f secs ", (double)timestamp/1e9); | |
1430 | if (new_shortname) { | |
1431 | printf("%s => %s:%d\n", | |
1432 | sched_in->shortname, sched_in->comm, sched_in->pid); | |
1433 | } else { | |
1434 | printf("\n"); | |
1435 | } | |
1436 | } | |
1437 | ||
1438 | ||
419ab0d6 FW |
1439 | static void |
1440 | process_sched_switch_event(struct raw_event_sample *raw, | |
1441 | struct event *event, | |
0ec04e16 | 1442 | int this_cpu, |
419ab0d6 FW |
1443 | u64 timestamp __used, |
1444 | struct thread *thread __used) | |
1445 | { | |
1446 | struct trace_switch_event switch_event; | |
1447 | ||
1448 | FILL_COMMON_FIELDS(switch_event, event, raw->data); | |
1449 | ||
1450 | FILL_ARRAY(switch_event, prev_comm, event, raw->data); | |
1451 | FILL_FIELD(switch_event, prev_pid, event, raw->data); | |
1452 | FILL_FIELD(switch_event, prev_prio, event, raw->data); | |
1453 | FILL_FIELD(switch_event, prev_state, event, raw->data); | |
1454 | FILL_ARRAY(switch_event, next_comm, event, raw->data); | |
1455 | FILL_FIELD(switch_event, next_pid, event, raw->data); | |
1456 | FILL_FIELD(switch_event, next_prio, event, raw->data); | |
1457 | ||
0ec04e16 | 1458 | if (curr_pid[this_cpu] != (u32)-1) { |
c8a37751 IM |
1459 | /* |
1460 | * Are we trying to switch away a PID that is | |
1461 | * not current? | |
1462 | */ | |
0ec04e16 | 1463 | if (curr_pid[this_cpu] != switch_event.prev_pid) |
c8a37751 IM |
1464 | nr_context_switch_bugs++; |
1465 | } | |
0ec04e16 IM |
1466 | if (trace_handler->switch_event) |
1467 | trace_handler->switch_event(&switch_event, event, this_cpu, timestamp, thread); | |
c8a37751 | 1468 | |
0ec04e16 | 1469 | curr_pid[this_cpu] = switch_event.next_pid; |
419ab0d6 FW |
1470 | } |
1471 | ||
39aeb52f | 1472 | static void |
1473 | process_sched_runtime_event(struct raw_event_sample *raw, | |
1474 | struct event *event, | |
1475 | int cpu __used, | |
1476 | u64 timestamp __used, | |
1477 | struct thread *thread __used) | |
1478 | { | |
1479 | struct trace_runtime_event runtime_event; | |
1480 | ||
1481 | FILL_ARRAY(runtime_event, comm, event, raw->data); | |
1482 | FILL_FIELD(runtime_event, pid, event, raw->data); | |
1483 | FILL_FIELD(runtime_event, runtime, event, raw->data); | |
1484 | FILL_FIELD(runtime_event, vruntime, event, raw->data); | |
1485 | ||
0ec04e16 IM |
1486 | if (trace_handler->runtime_event) |
1487 | trace_handler->runtime_event(&runtime_event, event, cpu, timestamp, thread); | |
39aeb52f | 1488 | } |
1489 | ||
419ab0d6 FW |
1490 | static void |
1491 | process_sched_fork_event(struct raw_event_sample *raw, | |
1492 | struct event *event, | |
1493 | int cpu __used, | |
1494 | u64 timestamp __used, | |
1495 | struct thread *thread __used) | |
fbf94829 | 1496 | { |
46538818 FW |
1497 | struct trace_fork_event fork_event; |
1498 | ||
1499 | FILL_COMMON_FIELDS(fork_event, event, raw->data); | |
1500 | ||
1501 | FILL_ARRAY(fork_event, parent_comm, event, raw->data); | |
1502 | FILL_FIELD(fork_event, parent_pid, event, raw->data); | |
1503 | FILL_ARRAY(fork_event, child_comm, event, raw->data); | |
1504 | FILL_FIELD(fork_event, child_pid, event, raw->data); | |
1505 | ||
0ec04e16 IM |
1506 | if (trace_handler->fork_event) |
1507 | trace_handler->fork_event(&fork_event, event, cpu, timestamp, thread); | |
fbf94829 IM |
1508 | } |
1509 | ||
419ab0d6 FW |
1510 | static void |
1511 | process_sched_exit_event(struct event *event, | |
1512 | int cpu __used, | |
1513 | u64 timestamp __used, | |
1514 | struct thread *thread __used) | |
fbf94829 | 1515 | { |
ad236fd2 IM |
1516 | if (verbose) |
1517 | printf("sched_exit event %p\n", event); | |
ec156764 IM |
1518 | } |
1519 | ||
1520 | static void | |
ad236fd2 | 1521 | process_raw_event(event_t *raw_event __used, void *more_data, |
ec156764 IM |
1522 | int cpu, u64 timestamp, struct thread *thread) |
1523 | { | |
46538818 | 1524 | struct raw_event_sample *raw = more_data; |
ec156764 IM |
1525 | struct event *event; |
1526 | int type; | |
1527 | ||
1528 | type = trace_parse_common_type(raw->data); | |
1529 | event = trace_find_event(type); | |
1530 | ||
ec156764 | 1531 | if (!strcmp(event->name, "sched_switch")) |
46538818 | 1532 | process_sched_switch_event(raw, event, cpu, timestamp, thread); |
39aeb52f | 1533 | if (!strcmp(event->name, "sched_stat_runtime")) |
1534 | process_sched_runtime_event(raw, event, cpu, timestamp, thread); | |
ec156764 | 1535 | if (!strcmp(event->name, "sched_wakeup")) |
46538818 | 1536 | process_sched_wakeup_event(raw, event, cpu, timestamp, thread); |
fbf94829 | 1537 | if (!strcmp(event->name, "sched_wakeup_new")) |
46538818 | 1538 | process_sched_wakeup_event(raw, event, cpu, timestamp, thread); |
fbf94829 | 1539 | if (!strcmp(event->name, "sched_process_fork")) |
46538818 | 1540 | process_sched_fork_event(raw, event, cpu, timestamp, thread); |
fbf94829 IM |
1541 | if (!strcmp(event->name, "sched_process_exit")) |
1542 | process_sched_exit_event(event, cpu, timestamp, thread); | |
ec156764 IM |
1543 | } |
1544 | ||
0a02ad93 IM |
1545 | static int |
1546 | process_sample_event(event_t *event, unsigned long offset, unsigned long head) | |
1547 | { | |
0a02ad93 IM |
1548 | struct thread *thread; |
1549 | u64 ip = event->ip.ip; | |
1550 | u64 timestamp = -1; | |
1551 | u32 cpu = -1; | |
1552 | u64 period = 1; | |
1553 | void *more_data = event->ip.__more_data; | |
a80deb62 ACM |
1554 | |
1555 | if (!(sample_type & PERF_SAMPLE_RAW)) | |
1556 | return 0; | |
0a02ad93 IM |
1557 | |
1558 | thread = threads__findnew(event->ip.pid, &threads, &last_match); | |
1559 | ||
1560 | if (sample_type & PERF_SAMPLE_TIME) { | |
1561 | timestamp = *(u64 *)more_data; | |
1562 | more_data += sizeof(u64); | |
1563 | } | |
1564 | ||
1565 | if (sample_type & PERF_SAMPLE_CPU) { | |
1566 | cpu = *(u32 *)more_data; | |
1567 | more_data += sizeof(u32); | |
1568 | more_data += sizeof(u32); /* reserved */ | |
1569 | } | |
1570 | ||
1571 | if (sample_type & PERF_SAMPLE_PERIOD) { | |
1572 | period = *(u64 *)more_data; | |
1573 | more_data += sizeof(u64); | |
1574 | } | |
1575 | ||
cdd6c482 | 1576 | dump_printf("%p [%p]: PERF_RECORD_SAMPLE (IP, %d): %d/%d: %p period: %Ld\n", |
0a02ad93 IM |
1577 | (void *)(offset + head), |
1578 | (void *)(long)(event->header.size), | |
1579 | event->header.misc, | |
1580 | event->ip.pid, event->ip.tid, | |
1581 | (void *)(long)ip, | |
1582 | (long long)period); | |
1583 | ||
1584 | dump_printf(" ... thread: %s:%d\n", thread->comm, thread->pid); | |
1585 | ||
1586 | if (thread == NULL) { | |
1587 | eprintf("problem processing %d event, skipping it.\n", | |
1588 | event->header.type); | |
1589 | return -1; | |
1590 | } | |
1591 | ||
a80deb62 | 1592 | process_raw_event(event, more_data, cpu, timestamp, thread); |
0a02ad93 IM |
1593 | |
1594 | return 0; | |
1595 | } | |
1596 | ||
1597 | static int | |
016e92fb FW |
1598 | process_lost_event(event_t *event __used, |
1599 | unsigned long offset __used, | |
1600 | unsigned long head __used) | |
0a02ad93 | 1601 | { |
016e92fb FW |
1602 | nr_lost_chunks++; |
1603 | nr_lost_events += event->lost.lost; | |
0a02ad93 | 1604 | |
016e92fb FW |
1605 | return 0; |
1606 | } | |
0a02ad93 | 1607 | |
016e92fb FW |
1608 | static int sample_type_check(u64 type) |
1609 | { | |
1610 | sample_type = type; | |
0a02ad93 | 1611 | |
016e92fb FW |
1612 | if (!(sample_type & PERF_SAMPLE_RAW)) { |
1613 | fprintf(stderr, | |
1614 | "No trace sample to read. Did you call perf record " | |
1615 | "without -R?"); | |
0a02ad93 IM |
1616 | return -1; |
1617 | } | |
1618 | ||
1619 | return 0; | |
1620 | } | |
1621 | ||
016e92fb FW |
1622 | static struct perf_file_handler file_handler = { |
1623 | .process_sample_event = process_sample_event, | |
1624 | .process_comm_event = process_comm_event, | |
1625 | .process_lost_event = process_lost_event, | |
1626 | .sample_type_check = sample_type_check, | |
1627 | }; | |
1628 | ||
46f392c9 | 1629 | static int read_events(void) |
0a02ad93 | 1630 | { |
0a02ad93 | 1631 | register_idle_thread(&threads, &last_match); |
016e92fb | 1632 | register_perf_file_handler(&file_handler); |
0a02ad93 | 1633 | |
016e92fb | 1634 | return mmap_dispatch_perf_file(&header, input_name, 0, 0, &cwdlen, &cwd); |
0a02ad93 IM |
1635 | } |
1636 | ||
0ec04e16 IM |
1637 | static void print_bad_events(void) |
1638 | { | |
1639 | if (nr_unordered_timestamps && nr_timestamps) { | |
1640 | printf(" INFO: %.3f%% unordered timestamps (%ld out of %ld)\n", | |
1641 | (double)nr_unordered_timestamps/(double)nr_timestamps*100.0, | |
1642 | nr_unordered_timestamps, nr_timestamps); | |
1643 | } | |
1644 | if (nr_lost_events && nr_events) { | |
1645 | printf(" INFO: %.3f%% lost events (%ld out of %ld, in %ld chunks)\n", | |
1646 | (double)nr_lost_events/(double)nr_events*100.0, | |
1647 | nr_lost_events, nr_events, nr_lost_chunks); | |
1648 | } | |
1649 | if (nr_state_machine_bugs && nr_timestamps) { | |
1650 | printf(" INFO: %.3f%% state machine bugs (%ld out of %ld)", | |
1651 | (double)nr_state_machine_bugs/(double)nr_timestamps*100.0, | |
1652 | nr_state_machine_bugs, nr_timestamps); | |
1653 | if (nr_lost_events) | |
1654 | printf(" (due to lost events?)"); | |
1655 | printf("\n"); | |
1656 | } | |
1657 | if (nr_context_switch_bugs && nr_timestamps) { | |
1658 | printf(" INFO: %.3f%% context switch bugs (%ld out of %ld)", | |
1659 | (double)nr_context_switch_bugs/(double)nr_timestamps*100.0, | |
1660 | nr_context_switch_bugs, nr_timestamps); | |
1661 | if (nr_lost_events) | |
1662 | printf(" (due to lost events?)"); | |
1663 | printf("\n"); | |
1664 | } | |
1665 | } | |
1666 | ||
1667 | static void __cmd_lat(void) | |
1668 | { | |
1669 | struct rb_node *next; | |
1670 | ||
1671 | setup_pager(); | |
1672 | read_events(); | |
1673 | sort_lat(); | |
1674 | ||
1675 | printf("\n -----------------------------------------------------------------------------------------\n"); | |
1676 | printf(" Task | Runtime ms | Switches | Average delay ms | Maximum delay ms |\n"); | |
1677 | printf(" -----------------------------------------------------------------------------------------\n"); | |
1678 | ||
1679 | next = rb_first(&sorted_atom_root); | |
1680 | ||
1681 | while (next) { | |
1682 | struct work_atoms *work_list; | |
1683 | ||
1684 | work_list = rb_entry(next, struct work_atoms, node); | |
1685 | output_lat_thread(work_list); | |
1686 | next = rb_next(next); | |
1687 | } | |
1688 | ||
1689 | printf(" -----------------------------------------------------------------------------------------\n"); | |
1690 | printf(" TOTAL: |%11.3f ms |%9Ld |\n", | |
1691 | (double)all_runtime/1e6, all_count); | |
1692 | ||
1693 | printf(" ---------------------------------------------------\n"); | |
1694 | ||
1695 | print_bad_events(); | |
1696 | printf("\n"); | |
1697 | ||
1698 | } | |
1699 | ||
1700 | static struct trace_sched_handler map_ops = { | |
1701 | .wakeup_event = NULL, | |
1702 | .switch_event = map_switch_event, | |
1703 | .runtime_event = NULL, | |
1704 | .fork_event = NULL, | |
1705 | }; | |
1706 | ||
1707 | static void __cmd_map(void) | |
1708 | { | |
40749d0f IM |
1709 | max_cpu = sysconf(_SC_NPROCESSORS_CONF); |
1710 | ||
0ec04e16 IM |
1711 | setup_pager(); |
1712 | read_events(); | |
1713 | print_bad_events(); | |
1714 | } | |
1715 | ||
1716 | static void __cmd_replay(void) | |
1717 | { | |
1718 | unsigned long i; | |
1719 | ||
1720 | calibrate_run_measurement_overhead(); | |
1721 | calibrate_sleep_measurement_overhead(); | |
1722 | ||
1723 | test_calibrations(); | |
1724 | ||
1725 | read_events(); | |
1726 | ||
1727 | printf("nr_run_events: %ld\n", nr_run_events); | |
1728 | printf("nr_sleep_events: %ld\n", nr_sleep_events); | |
1729 | printf("nr_wakeup_events: %ld\n", nr_wakeup_events); | |
1730 | ||
1731 | if (targetless_wakeups) | |
1732 | printf("target-less wakeups: %ld\n", targetless_wakeups); | |
1733 | if (multitarget_wakeups) | |
1734 | printf("multi-target wakeups: %ld\n", multitarget_wakeups); | |
1735 | if (nr_run_events_optimized) | |
1736 | printf("run atoms optimized: %ld\n", | |
1737 | nr_run_events_optimized); | |
1738 | ||
1739 | print_task_traces(); | |
1740 | add_cross_task_wakeups(); | |
1741 | ||
1742 | create_tasks(); | |
1743 | printf("------------------------------------------------------------\n"); | |
1744 | for (i = 0; i < replay_repeat; i++) | |
1745 | run_one_test(); | |
1746 | } | |
1747 | ||
1748 | ||
46f392c9 | 1749 | static const char * const sched_usage[] = { |
4b77a729 | 1750 | "perf sched [<options>] {record|latency|map|replay|trace}", |
0a02ad93 IM |
1751 | NULL |
1752 | }; | |
1753 | ||
f2858d8a | 1754 | static const struct option sched_options[] = { |
4b77a729 MG |
1755 | OPT_STRING('i', "input", &input_name, "file", |
1756 | "input file name"), | |
f2858d8a IM |
1757 | OPT_BOOLEAN('v', "verbose", &verbose, |
1758 | "be more verbose (show symbol address, etc)"), | |
0a02ad93 IM |
1759 | OPT_BOOLEAN('D', "dump-raw-trace", &dump_trace, |
1760 | "dump raw trace in ASCII"), | |
f2858d8a IM |
1761 | OPT_END() |
1762 | }; | |
1763 | ||
1764 | static const char * const latency_usage[] = { | |
1765 | "perf sched latency [<options>]", | |
1766 | NULL | |
1767 | }; | |
1768 | ||
1769 | static const struct option latency_options[] = { | |
daa1d7a5 FW |
1770 | OPT_STRING('s', "sort", &sort_order, "key[,key2...]", |
1771 | "sort by key(s): runtime, switch, avg, max"), | |
0a02ad93 IM |
1772 | OPT_BOOLEAN('v', "verbose", &verbose, |
1773 | "be more verbose (show symbol address, etc)"), | |
f2858d8a IM |
1774 | OPT_BOOLEAN('D', "dump-raw-trace", &dump_trace, |
1775 | "dump raw trace in ASCII"), | |
1776 | OPT_END() | |
1777 | }; | |
1778 | ||
1779 | static const char * const replay_usage[] = { | |
1780 | "perf sched replay [<options>]", | |
1781 | NULL | |
1782 | }; | |
1783 | ||
1784 | static const struct option replay_options[] = { | |
1785 | OPT_INTEGER('r', "repeat", &replay_repeat, | |
1786 | "repeat the workload replay N times (-1: infinite)"), | |
1787 | OPT_BOOLEAN('v', "verbose", &verbose, | |
1788 | "be more verbose (show symbol address, etc)"), | |
1789 | OPT_BOOLEAN('D', "dump-raw-trace", &dump_trace, | |
1790 | "dump raw trace in ASCII"), | |
0a02ad93 IM |
1791 | OPT_END() |
1792 | }; | |
1793 | ||
daa1d7a5 FW |
1794 | static void setup_sorting(void) |
1795 | { | |
1796 | char *tmp, *tok, *str = strdup(sort_order); | |
1797 | ||
1798 | for (tok = strtok_r(str, ", ", &tmp); | |
1799 | tok; tok = strtok_r(NULL, ", ", &tmp)) { | |
1800 | if (sort_dimension__add(tok, &sort_list) < 0) { | |
1801 | error("Unknown --sort key: `%s'", tok); | |
f2858d8a | 1802 | usage_with_options(latency_usage, latency_options); |
daa1d7a5 FW |
1803 | } |
1804 | } | |
1805 | ||
1806 | free(str); | |
1807 | ||
1808 | sort_dimension__add((char *)"pid", &cmp_pid); | |
1809 | } | |
1810 | ||
1fc35b29 IM |
1811 | static const char *record_args[] = { |
1812 | "record", | |
1813 | "-a", | |
1814 | "-R", | |
d1302522 | 1815 | "-M", |
ea57c4f5 | 1816 | "-f", |
dc02bf71 | 1817 | "-m", "1024", |
1fc35b29 IM |
1818 | "-c", "1", |
1819 | "-e", "sched:sched_switch:r", | |
1820 | "-e", "sched:sched_stat_wait:r", | |
1821 | "-e", "sched:sched_stat_sleep:r", | |
1822 | "-e", "sched:sched_stat_iowait:r", | |
ea57c4f5 | 1823 | "-e", "sched:sched_stat_runtime:r", |
1fc35b29 IM |
1824 | "-e", "sched:sched_process_exit:r", |
1825 | "-e", "sched:sched_process_fork:r", | |
1826 | "-e", "sched:sched_wakeup:r", | |
1827 | "-e", "sched:sched_migrate_task:r", | |
1828 | }; | |
1829 | ||
1830 | static int __cmd_record(int argc, const char **argv) | |
1831 | { | |
1832 | unsigned int rec_argc, i, j; | |
1833 | const char **rec_argv; | |
1834 | ||
1835 | rec_argc = ARRAY_SIZE(record_args) + argc - 1; | |
1836 | rec_argv = calloc(rec_argc + 1, sizeof(char *)); | |
1837 | ||
1838 | for (i = 0; i < ARRAY_SIZE(record_args); i++) | |
1839 | rec_argv[i] = strdup(record_args[i]); | |
1840 | ||
1841 | for (j = 1; j < (unsigned int)argc; j++, i++) | |
1842 | rec_argv[i] = argv[j]; | |
1843 | ||
1844 | BUG_ON(i != rec_argc); | |
1845 | ||
1846 | return cmd_record(i, rec_argv, NULL); | |
1847 | } | |
1848 | ||
0a02ad93 IM |
1849 | int cmd_sched(int argc, const char **argv, const char *prefix __used) |
1850 | { | |
1851 | symbol__init(); | |
0a02ad93 | 1852 | |
f2858d8a IM |
1853 | argc = parse_options(argc, argv, sched_options, sched_usage, |
1854 | PARSE_OPT_STOP_AT_NON_OPTION); | |
1855 | if (!argc) | |
1856 | usage_with_options(sched_usage, sched_options); | |
0a02ad93 | 1857 | |
1fc35b29 IM |
1858 | if (!strncmp(argv[0], "rec", 3)) { |
1859 | return __cmd_record(argc, argv); | |
1860 | } else if (!strncmp(argv[0], "lat", 3)) { | |
cdce9d73 | 1861 | trace_handler = &lat_ops; |
f2858d8a IM |
1862 | if (argc > 1) { |
1863 | argc = parse_options(argc, argv, latency_options, latency_usage, 0); | |
1864 | if (argc) | |
1865 | usage_with_options(latency_usage, latency_options); | |
f2858d8a | 1866 | } |
b5fae128 | 1867 | setup_sorting(); |
46f392c9 | 1868 | __cmd_lat(); |
0ec04e16 IM |
1869 | } else if (!strcmp(argv[0], "map")) { |
1870 | trace_handler = &map_ops; | |
1871 | setup_sorting(); | |
1872 | __cmd_map(); | |
f2858d8a IM |
1873 | } else if (!strncmp(argv[0], "rep", 3)) { |
1874 | trace_handler = &replay_ops; | |
1875 | if (argc) { | |
1876 | argc = parse_options(argc, argv, replay_options, replay_usage, 0); | |
1877 | if (argc) | |
1878 | usage_with_options(replay_usage, replay_options); | |
1879 | } | |
1880 | __cmd_replay(); | |
c13f0d3c IM |
1881 | } else if (!strcmp(argv[0], "trace")) { |
1882 | /* | |
1883 | * Aliased to 'perf trace' for now: | |
1884 | */ | |
1885 | return cmd_trace(argc, argv, prefix); | |
f2858d8a IM |
1886 | } else { |
1887 | usage_with_options(sched_usage, sched_options); | |
1888 | } | |
1889 | ||
ec156764 | 1890 | return 0; |
0a02ad93 | 1891 | } |