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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 | |
39aeb52f | 53 | struct sched_atom; |
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; | |
39aeb52f | 62 | struct sched_atom **atoms; |
b1ffe8f3 IM |
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 | ||
39aeb52f | 79 | struct sched_atom { |
b1ffe8f3 IM |
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; | |
ea57c4f5 IM |
119 | static unsigned long nr_timestamps; |
120 | static unsigned long unordered_timestamps; | |
b1ffe8f3 IM |
121 | |
122 | #define TASK_STATE_TO_CHAR_STR "RSDTtZX" | |
123 | ||
124 | enum thread_state { | |
125 | THREAD_SLEEPING = 0, | |
126 | THREAD_WAIT_CPU, | |
127 | THREAD_SCHED_IN, | |
128 | THREAD_IGNORE | |
129 | }; | |
130 | ||
131 | struct work_atom { | |
132 | struct list_head list; | |
133 | enum thread_state state; | |
aa1ab9d2 | 134 | u64 sched_out_time; |
b1ffe8f3 IM |
135 | u64 wake_up_time; |
136 | u64 sched_in_time; | |
137 | u64 runtime; | |
138 | }; | |
139 | ||
39aeb52f | 140 | struct work_atoms { |
141 | struct list_head work_list; | |
b1ffe8f3 IM |
142 | struct thread *thread; |
143 | struct rb_node node; | |
144 | u64 max_lat; | |
145 | u64 total_lat; | |
146 | u64 nb_atoms; | |
147 | u64 total_runtime; | |
148 | }; | |
149 | ||
39aeb52f | 150 | typedef int (*sort_fn_t)(struct work_atoms *, struct work_atoms *); |
b1ffe8f3 IM |
151 | |
152 | static struct rb_root atom_root, sorted_atom_root; | |
153 | ||
154 | static u64 all_runtime; | |
155 | static u64 all_count; | |
156 | ||
157 | static int read_events(void); | |
158 | ||
159 | ||
160 | static u64 get_nsecs(void) | |
ec156764 IM |
161 | { |
162 | struct timespec ts; | |
163 | ||
164 | clock_gettime(CLOCK_MONOTONIC, &ts); | |
165 | ||
166 | return ts.tv_sec * 1000000000ULL + ts.tv_nsec; | |
167 | } | |
168 | ||
b1ffe8f3 | 169 | static void burn_nsecs(u64 nsecs) |
ec156764 | 170 | { |
b1ffe8f3 | 171 | u64 T0 = get_nsecs(), T1; |
ec156764 IM |
172 | |
173 | do { | |
174 | T1 = get_nsecs(); | |
175 | } while (T1 + run_measurement_overhead < T0 + nsecs); | |
176 | } | |
177 | ||
b1ffe8f3 | 178 | static void sleep_nsecs(u64 nsecs) |
ec156764 IM |
179 | { |
180 | struct timespec ts; | |
181 | ||
182 | ts.tv_nsec = nsecs % 999999999; | |
183 | ts.tv_sec = nsecs / 999999999; | |
184 | ||
185 | nanosleep(&ts, NULL); | |
186 | } | |
187 | ||
188 | static void calibrate_run_measurement_overhead(void) | |
189 | { | |
b1ffe8f3 | 190 | u64 T0, T1, delta, min_delta = 1000000000ULL; |
ec156764 IM |
191 | int i; |
192 | ||
193 | for (i = 0; i < 10; i++) { | |
194 | T0 = get_nsecs(); | |
195 | burn_nsecs(0); | |
196 | T1 = get_nsecs(); | |
197 | delta = T1-T0; | |
198 | min_delta = min(min_delta, delta); | |
199 | } | |
200 | run_measurement_overhead = min_delta; | |
201 | ||
ad236fd2 | 202 | printf("run measurement overhead: %Ld nsecs\n", min_delta); |
ec156764 IM |
203 | } |
204 | ||
205 | static void calibrate_sleep_measurement_overhead(void) | |
206 | { | |
b1ffe8f3 | 207 | u64 T0, T1, delta, min_delta = 1000000000ULL; |
ec156764 IM |
208 | int i; |
209 | ||
210 | for (i = 0; i < 10; i++) { | |
211 | T0 = get_nsecs(); | |
212 | sleep_nsecs(10000); | |
213 | T1 = get_nsecs(); | |
214 | delta = T1-T0; | |
215 | min_delta = min(min_delta, delta); | |
216 | } | |
217 | min_delta -= 10000; | |
218 | sleep_measurement_overhead = min_delta; | |
219 | ||
ad236fd2 | 220 | printf("sleep measurement overhead: %Ld nsecs\n", min_delta); |
ec156764 IM |
221 | } |
222 | ||
39aeb52f | 223 | static struct sched_atom * |
b1ffe8f3 | 224 | get_new_event(struct task_desc *task, u64 timestamp) |
ec156764 | 225 | { |
39aeb52f | 226 | struct sched_atom *event = calloc(1, sizeof(*event)); |
ec156764 IM |
227 | unsigned long idx = task->nr_events; |
228 | size_t size; | |
229 | ||
230 | event->timestamp = timestamp; | |
231 | event->nr = idx; | |
232 | ||
233 | task->nr_events++; | |
39aeb52f | 234 | size = sizeof(struct sched_atom *) * task->nr_events; |
235 | task->atoms = realloc(task->atoms, size); | |
236 | BUG_ON(!task->atoms); | |
ec156764 | 237 | |
39aeb52f | 238 | task->atoms[idx] = event; |
ec156764 IM |
239 | |
240 | return event; | |
241 | } | |
242 | ||
39aeb52f | 243 | static struct sched_atom *last_event(struct task_desc *task) |
ec156764 IM |
244 | { |
245 | if (!task->nr_events) | |
246 | return NULL; | |
247 | ||
39aeb52f | 248 | return task->atoms[task->nr_events - 1]; |
ec156764 IM |
249 | } |
250 | ||
251 | static void | |
b1ffe8f3 | 252 | add_sched_event_run(struct task_desc *task, u64 timestamp, u64 duration) |
ec156764 | 253 | { |
39aeb52f | 254 | struct sched_atom *event, *curr_event = last_event(task); |
ec156764 IM |
255 | |
256 | /* | |
fbf94829 IM |
257 | * optimize an existing RUN event by merging this one |
258 | * to it: | |
259 | */ | |
ec156764 IM |
260 | if (curr_event && curr_event->type == SCHED_EVENT_RUN) { |
261 | nr_run_events_optimized++; | |
262 | curr_event->duration += duration; | |
263 | return; | |
264 | } | |
265 | ||
266 | event = get_new_event(task, timestamp); | |
267 | ||
268 | event->type = SCHED_EVENT_RUN; | |
269 | event->duration = duration; | |
270 | ||
271 | nr_run_events++; | |
272 | } | |
273 | ||
ec156764 | 274 | static void |
b1ffe8f3 | 275 | add_sched_event_wakeup(struct task_desc *task, u64 timestamp, |
ec156764 IM |
276 | struct task_desc *wakee) |
277 | { | |
39aeb52f | 278 | struct sched_atom *event, *wakee_event; |
ec156764 IM |
279 | |
280 | event = get_new_event(task, timestamp); | |
281 | event->type = SCHED_EVENT_WAKEUP; | |
282 | event->wakee = wakee; | |
283 | ||
284 | wakee_event = last_event(wakee); | |
285 | if (!wakee_event || wakee_event->type != SCHED_EVENT_SLEEP) { | |
286 | targetless_wakeups++; | |
287 | return; | |
288 | } | |
289 | if (wakee_event->wait_sem) { | |
290 | multitarget_wakeups++; | |
291 | return; | |
292 | } | |
293 | ||
294 | wakee_event->wait_sem = calloc(1, sizeof(*wakee_event->wait_sem)); | |
295 | sem_init(wakee_event->wait_sem, 0, 0); | |
296 | wakee_event->specific_wait = 1; | |
297 | event->wait_sem = wakee_event->wait_sem; | |
298 | ||
299 | nr_wakeup_events++; | |
300 | } | |
301 | ||
302 | static void | |
b1ffe8f3 | 303 | add_sched_event_sleep(struct task_desc *task, u64 timestamp, |
ad236fd2 | 304 | u64 task_state __used) |
ec156764 | 305 | { |
39aeb52f | 306 | struct sched_atom *event = get_new_event(task, timestamp); |
ec156764 IM |
307 | |
308 | event->type = SCHED_EVENT_SLEEP; | |
309 | ||
310 | nr_sleep_events++; | |
311 | } | |
312 | ||
313 | static struct task_desc *register_pid(unsigned long pid, const char *comm) | |
314 | { | |
315 | struct task_desc *task; | |
316 | ||
317 | BUG_ON(pid >= MAX_PID); | |
318 | ||
319 | task = pid_to_task[pid]; | |
320 | ||
321 | if (task) | |
322 | return task; | |
323 | ||
324 | task = calloc(1, sizeof(*task)); | |
325 | task->pid = pid; | |
326 | task->nr = nr_tasks; | |
327 | strcpy(task->comm, comm); | |
328 | /* | |
329 | * every task starts in sleeping state - this gets ignored | |
330 | * if there's no wakeup pointing to this sleep state: | |
331 | */ | |
332 | add_sched_event_sleep(task, 0, 0); | |
333 | ||
334 | pid_to_task[pid] = task; | |
335 | nr_tasks++; | |
336 | tasks = realloc(tasks, nr_tasks*sizeof(struct task_task *)); | |
337 | BUG_ON(!tasks); | |
338 | tasks[task->nr] = task; | |
339 | ||
ad236fd2 IM |
340 | if (verbose) |
341 | printf("registered task #%ld, PID %ld (%s)\n", nr_tasks, pid, comm); | |
ec156764 IM |
342 | |
343 | return task; | |
344 | } | |
345 | ||
346 | ||
ec156764 IM |
347 | static void print_task_traces(void) |
348 | { | |
349 | struct task_desc *task; | |
350 | unsigned long i; | |
351 | ||
352 | for (i = 0; i < nr_tasks; i++) { | |
353 | task = tasks[i]; | |
ad236fd2 | 354 | printf("task %6ld (%20s:%10ld), nr_events: %ld\n", |
ec156764 IM |
355 | task->nr, task->comm, task->pid, task->nr_events); |
356 | } | |
357 | } | |
358 | ||
359 | static void add_cross_task_wakeups(void) | |
360 | { | |
361 | struct task_desc *task1, *task2; | |
362 | unsigned long i, j; | |
363 | ||
364 | for (i = 0; i < nr_tasks; i++) { | |
365 | task1 = tasks[i]; | |
366 | j = i + 1; | |
367 | if (j == nr_tasks) | |
368 | j = 0; | |
369 | task2 = tasks[j]; | |
370 | add_sched_event_wakeup(task1, 0, task2); | |
371 | } | |
372 | } | |
373 | ||
374 | static void | |
39aeb52f | 375 | process_sched_event(struct task_desc *this_task __used, struct sched_atom *atom) |
ec156764 IM |
376 | { |
377 | int ret = 0; | |
b1ffe8f3 | 378 | u64 now; |
ec156764 IM |
379 | long long delta; |
380 | ||
381 | now = get_nsecs(); | |
39aeb52f | 382 | delta = start_time + atom->timestamp - now; |
ec156764 | 383 | |
39aeb52f | 384 | switch (atom->type) { |
ec156764 | 385 | case SCHED_EVENT_RUN: |
39aeb52f | 386 | burn_nsecs(atom->duration); |
ec156764 IM |
387 | break; |
388 | case SCHED_EVENT_SLEEP: | |
39aeb52f | 389 | if (atom->wait_sem) |
390 | ret = sem_wait(atom->wait_sem); | |
ec156764 IM |
391 | BUG_ON(ret); |
392 | break; | |
393 | case SCHED_EVENT_WAKEUP: | |
39aeb52f | 394 | if (atom->wait_sem) |
395 | ret = sem_post(atom->wait_sem); | |
ec156764 IM |
396 | BUG_ON(ret); |
397 | break; | |
398 | default: | |
399 | BUG_ON(1); | |
400 | } | |
401 | } | |
402 | ||
b1ffe8f3 | 403 | static u64 get_cpu_usage_nsec_parent(void) |
ec156764 IM |
404 | { |
405 | struct rusage ru; | |
b1ffe8f3 | 406 | u64 sum; |
ec156764 IM |
407 | int err; |
408 | ||
409 | err = getrusage(RUSAGE_SELF, &ru); | |
410 | BUG_ON(err); | |
411 | ||
412 | sum = ru.ru_utime.tv_sec*1e9 + ru.ru_utime.tv_usec*1e3; | |
413 | sum += ru.ru_stime.tv_sec*1e9 + ru.ru_stime.tv_usec*1e3; | |
414 | ||
415 | return sum; | |
416 | } | |
417 | ||
b1ffe8f3 | 418 | static u64 get_cpu_usage_nsec_self(void) |
ec156764 IM |
419 | { |
420 | char filename [] = "/proc/1234567890/sched"; | |
421 | unsigned long msecs, nsecs; | |
422 | char *line = NULL; | |
b1ffe8f3 | 423 | u64 total = 0; |
ec156764 IM |
424 | size_t len = 0; |
425 | ssize_t chars; | |
426 | FILE *file; | |
427 | int ret; | |
428 | ||
429 | sprintf(filename, "/proc/%d/sched", getpid()); | |
430 | file = fopen(filename, "r"); | |
431 | BUG_ON(!file); | |
432 | ||
433 | while ((chars = getline(&line, &len, file)) != -1) { | |
ec156764 IM |
434 | ret = sscanf(line, "se.sum_exec_runtime : %ld.%06ld\n", |
435 | &msecs, &nsecs); | |
436 | if (ret == 2) { | |
437 | total = msecs*1e6 + nsecs; | |
ec156764 IM |
438 | break; |
439 | } | |
440 | } | |
441 | if (line) | |
442 | free(line); | |
443 | fclose(file); | |
444 | ||
445 | return total; | |
446 | } | |
447 | ||
448 | static void *thread_func(void *ctx) | |
449 | { | |
450 | struct task_desc *this_task = ctx; | |
b1ffe8f3 | 451 | u64 cpu_usage_0, cpu_usage_1; |
ec156764 IM |
452 | unsigned long i, ret; |
453 | char comm2[22]; | |
454 | ||
ec156764 IM |
455 | sprintf(comm2, ":%s", this_task->comm); |
456 | prctl(PR_SET_NAME, comm2); | |
457 | ||
458 | again: | |
459 | ret = sem_post(&this_task->ready_for_work); | |
460 | BUG_ON(ret); | |
ec156764 IM |
461 | ret = pthread_mutex_lock(&start_work_mutex); |
462 | BUG_ON(ret); | |
463 | ret = pthread_mutex_unlock(&start_work_mutex); | |
464 | BUG_ON(ret); | |
ec156764 IM |
465 | |
466 | cpu_usage_0 = get_cpu_usage_nsec_self(); | |
467 | ||
468 | for (i = 0; i < this_task->nr_events; i++) { | |
469 | this_task->curr_event = i; | |
39aeb52f | 470 | process_sched_event(this_task, this_task->atoms[i]); |
ec156764 IM |
471 | } |
472 | ||
473 | cpu_usage_1 = get_cpu_usage_nsec_self(); | |
474 | this_task->cpu_usage = cpu_usage_1 - cpu_usage_0; | |
475 | ||
ec156764 IM |
476 | ret = sem_post(&this_task->work_done_sem); |
477 | BUG_ON(ret); | |
ec156764 IM |
478 | |
479 | ret = pthread_mutex_lock(&work_done_wait_mutex); | |
480 | BUG_ON(ret); | |
481 | ret = pthread_mutex_unlock(&work_done_wait_mutex); | |
482 | BUG_ON(ret); | |
ec156764 IM |
483 | |
484 | goto again; | |
485 | } | |
486 | ||
487 | static void create_tasks(void) | |
488 | { | |
489 | struct task_desc *task; | |
490 | pthread_attr_t attr; | |
491 | unsigned long i; | |
492 | int err; | |
493 | ||
494 | err = pthread_attr_init(&attr); | |
495 | BUG_ON(err); | |
496 | err = pthread_attr_setstacksize(&attr, (size_t)(16*1024)); | |
497 | BUG_ON(err); | |
498 | err = pthread_mutex_lock(&start_work_mutex); | |
499 | BUG_ON(err); | |
500 | err = pthread_mutex_lock(&work_done_wait_mutex); | |
501 | BUG_ON(err); | |
502 | for (i = 0; i < nr_tasks; i++) { | |
503 | task = tasks[i]; | |
504 | sem_init(&task->sleep_sem, 0, 0); | |
505 | sem_init(&task->ready_for_work, 0, 0); | |
506 | sem_init(&task->work_done_sem, 0, 0); | |
507 | task->curr_event = 0; | |
508 | err = pthread_create(&task->thread, &attr, thread_func, task); | |
509 | BUG_ON(err); | |
510 | } | |
511 | } | |
512 | ||
ec156764 IM |
513 | static void wait_for_tasks(void) |
514 | { | |
b1ffe8f3 | 515 | u64 cpu_usage_0, cpu_usage_1; |
ec156764 IM |
516 | struct task_desc *task; |
517 | unsigned long i, ret; | |
518 | ||
ec156764 | 519 | start_time = get_nsecs(); |
ec156764 IM |
520 | cpu_usage = 0; |
521 | pthread_mutex_unlock(&work_done_wait_mutex); | |
522 | ||
523 | for (i = 0; i < nr_tasks; i++) { | |
524 | task = tasks[i]; | |
525 | ret = sem_wait(&task->ready_for_work); | |
526 | BUG_ON(ret); | |
527 | sem_init(&task->ready_for_work, 0, 0); | |
528 | } | |
529 | ret = pthread_mutex_lock(&work_done_wait_mutex); | |
530 | BUG_ON(ret); | |
531 | ||
532 | cpu_usage_0 = get_cpu_usage_nsec_parent(); | |
533 | ||
534 | pthread_mutex_unlock(&start_work_mutex); | |
535 | ||
ec156764 IM |
536 | for (i = 0; i < nr_tasks; i++) { |
537 | task = tasks[i]; | |
538 | ret = sem_wait(&task->work_done_sem); | |
539 | BUG_ON(ret); | |
540 | sem_init(&task->work_done_sem, 0, 0); | |
541 | cpu_usage += task->cpu_usage; | |
542 | task->cpu_usage = 0; | |
543 | } | |
544 | ||
545 | cpu_usage_1 = get_cpu_usage_nsec_parent(); | |
546 | if (!runavg_cpu_usage) | |
547 | runavg_cpu_usage = cpu_usage; | |
548 | runavg_cpu_usage = (runavg_cpu_usage*9 + cpu_usage)/10; | |
549 | ||
550 | parent_cpu_usage = cpu_usage_1 - cpu_usage_0; | |
551 | if (!runavg_parent_cpu_usage) | |
552 | runavg_parent_cpu_usage = parent_cpu_usage; | |
553 | runavg_parent_cpu_usage = (runavg_parent_cpu_usage*9 + | |
554 | parent_cpu_usage)/10; | |
555 | ||
556 | ret = pthread_mutex_lock(&start_work_mutex); | |
557 | BUG_ON(ret); | |
558 | ||
559 | for (i = 0; i < nr_tasks; i++) { | |
560 | task = tasks[i]; | |
561 | sem_init(&task->sleep_sem, 0, 0); | |
562 | task->curr_event = 0; | |
563 | } | |
564 | } | |
565 | ||
ec156764 IM |
566 | static void run_one_test(void) |
567 | { | |
b1ffe8f3 | 568 | u64 T0, T1, delta, avg_delta, fluct, std_dev; |
ec156764 IM |
569 | |
570 | T0 = get_nsecs(); | |
571 | wait_for_tasks(); | |
572 | T1 = get_nsecs(); | |
573 | ||
574 | delta = T1 - T0; | |
575 | sum_runtime += delta; | |
576 | nr_runs++; | |
577 | ||
578 | avg_delta = sum_runtime / nr_runs; | |
579 | if (delta < avg_delta) | |
580 | fluct = avg_delta - delta; | |
581 | else | |
582 | fluct = delta - avg_delta; | |
583 | sum_fluct += fluct; | |
584 | std_dev = sum_fluct / nr_runs / sqrt(nr_runs); | |
585 | if (!run_avg) | |
586 | run_avg = delta; | |
587 | run_avg = (run_avg*9 + delta)/10; | |
588 | ||
ad236fd2 | 589 | printf("#%-3ld: %0.3f, ", |
ec156764 IM |
590 | nr_runs, (double)delta/1000000.0); |
591 | ||
ad236fd2 | 592 | printf("ravg: %0.2f, ", |
ec156764 IM |
593 | (double)run_avg/1e6); |
594 | ||
ad236fd2 | 595 | printf("cpu: %0.2f / %0.2f", |
ec156764 IM |
596 | (double)cpu_usage/1e6, (double)runavg_cpu_usage/1e6); |
597 | ||
598 | #if 0 | |
599 | /* | |
fbf94829 IM |
600 | * rusage statistics done by the parent, these are less |
601 | * accurate than the sum_exec_runtime based statistics: | |
602 | */ | |
ad236fd2 | 603 | printf(" [%0.2f / %0.2f]", |
ec156764 IM |
604 | (double)parent_cpu_usage/1e6, |
605 | (double)runavg_parent_cpu_usage/1e6); | |
606 | #endif | |
607 | ||
ad236fd2 | 608 | printf("\n"); |
ec156764 IM |
609 | |
610 | if (nr_sleep_corrections) | |
ad236fd2 | 611 | printf(" (%ld sleep corrections)\n", nr_sleep_corrections); |
ec156764 IM |
612 | nr_sleep_corrections = 0; |
613 | } | |
614 | ||
615 | static void test_calibrations(void) | |
616 | { | |
b1ffe8f3 | 617 | u64 T0, T1; |
ec156764 IM |
618 | |
619 | T0 = get_nsecs(); | |
620 | burn_nsecs(1e6); | |
621 | T1 = get_nsecs(); | |
622 | ||
ad236fd2 | 623 | printf("the run test took %Ld nsecs\n", T1-T0); |
ec156764 IM |
624 | |
625 | T0 = get_nsecs(); | |
626 | sleep_nsecs(1e6); | |
627 | T1 = get_nsecs(); | |
628 | ||
ad236fd2 | 629 | printf("the sleep test took %Ld nsecs\n", T1-T0); |
ec156764 IM |
630 | } |
631 | ||
46f392c9 IM |
632 | static void __cmd_replay(void) |
633 | { | |
f2858d8a | 634 | unsigned long i; |
46f392c9 IM |
635 | |
636 | calibrate_run_measurement_overhead(); | |
637 | calibrate_sleep_measurement_overhead(); | |
638 | ||
639 | test_calibrations(); | |
640 | ||
641 | read_events(); | |
642 | ||
643 | printf("nr_run_events: %ld\n", nr_run_events); | |
644 | printf("nr_sleep_events: %ld\n", nr_sleep_events); | |
645 | printf("nr_wakeup_events: %ld\n", nr_wakeup_events); | |
646 | ||
647 | if (targetless_wakeups) | |
648 | printf("target-less wakeups: %ld\n", targetless_wakeups); | |
649 | if (multitarget_wakeups) | |
650 | printf("multi-target wakeups: %ld\n", multitarget_wakeups); | |
651 | if (nr_run_events_optimized) | |
39aeb52f | 652 | printf("run atoms optimized: %ld\n", |
46f392c9 IM |
653 | nr_run_events_optimized); |
654 | ||
655 | print_task_traces(); | |
656 | add_cross_task_wakeups(); | |
657 | ||
658 | create_tasks(); | |
659 | printf("------------------------------------------------------------\n"); | |
f2858d8a | 660 | for (i = 0; i < replay_repeat; i++) |
46f392c9 IM |
661 | run_one_test(); |
662 | } | |
663 | ||
0a02ad93 IM |
664 | static int |
665 | process_comm_event(event_t *event, unsigned long offset, unsigned long head) | |
666 | { | |
667 | struct thread *thread; | |
668 | ||
669 | thread = threads__findnew(event->comm.pid, &threads, &last_match); | |
670 | ||
671 | dump_printf("%p [%p]: PERF_EVENT_COMM: %s:%d\n", | |
672 | (void *)(offset + head), | |
673 | (void *)(long)(event->header.size), | |
674 | event->comm.comm, event->comm.pid); | |
675 | ||
676 | if (thread == NULL || | |
677 | thread__set_comm(thread, event->comm.comm)) { | |
678 | dump_printf("problem processing PERF_EVENT_COMM, skipping event.\n"); | |
679 | return -1; | |
680 | } | |
681 | total_comm++; | |
682 | ||
683 | return 0; | |
684 | } | |
685 | ||
46538818 FW |
686 | |
687 | struct raw_event_sample { | |
688 | u32 size; | |
689 | char data[0]; | |
690 | }; | |
691 | ||
692 | #define FILL_FIELD(ptr, field, event, data) \ | |
693 | ptr.field = (typeof(ptr.field)) raw_field_value(event, #field, data) | |
694 | ||
695 | #define FILL_ARRAY(ptr, array, event, data) \ | |
696 | do { \ | |
697 | void *__array = raw_field_ptr(event, #array, data); \ | |
698 | memcpy(ptr.array, __array, sizeof(ptr.array)); \ | |
699 | } while(0) | |
700 | ||
701 | #define FILL_COMMON_FIELDS(ptr, event, data) \ | |
702 | do { \ | |
703 | FILL_FIELD(ptr, common_type, event, data); \ | |
704 | FILL_FIELD(ptr, common_flags, event, data); \ | |
705 | FILL_FIELD(ptr, common_preempt_count, event, data); \ | |
706 | FILL_FIELD(ptr, common_pid, event, data); \ | |
707 | FILL_FIELD(ptr, common_tgid, event, data); \ | |
708 | } while (0) | |
709 | ||
419ab0d6 FW |
710 | |
711 | ||
712 | struct trace_switch_event { | |
713 | u32 size; | |
714 | ||
715 | u16 common_type; | |
716 | u8 common_flags; | |
717 | u8 common_preempt_count; | |
718 | u32 common_pid; | |
719 | u32 common_tgid; | |
720 | ||
721 | char prev_comm[16]; | |
722 | u32 prev_pid; | |
723 | u32 prev_prio; | |
724 | u64 prev_state; | |
725 | char next_comm[16]; | |
726 | u32 next_pid; | |
727 | u32 next_prio; | |
728 | }; | |
729 | ||
39aeb52f | 730 | struct trace_runtime_event { |
731 | u32 size; | |
732 | ||
733 | u16 common_type; | |
734 | u8 common_flags; | |
735 | u8 common_preempt_count; | |
736 | u32 common_pid; | |
737 | u32 common_tgid; | |
738 | ||
739 | char comm[16]; | |
740 | u32 pid; | |
741 | u64 runtime; | |
742 | u64 vruntime; | |
743 | }; | |
419ab0d6 | 744 | |
fbf94829 IM |
745 | struct trace_wakeup_event { |
746 | u32 size; | |
747 | ||
748 | u16 common_type; | |
749 | u8 common_flags; | |
750 | u8 common_preempt_count; | |
751 | u32 common_pid; | |
752 | u32 common_tgid; | |
753 | ||
754 | char comm[16]; | |
755 | u32 pid; | |
756 | ||
757 | u32 prio; | |
758 | u32 success; | |
759 | u32 cpu; | |
760 | }; | |
761 | ||
419ab0d6 FW |
762 | struct trace_fork_event { |
763 | u32 size; | |
46538818 | 764 | |
419ab0d6 FW |
765 | u16 common_type; |
766 | u8 common_flags; | |
767 | u8 common_preempt_count; | |
768 | u32 common_pid; | |
769 | u32 common_tgid; | |
770 | ||
771 | char parent_comm[16]; | |
772 | u32 parent_pid; | |
773 | char child_comm[16]; | |
774 | u32 child_pid; | |
775 | }; | |
776 | ||
777 | struct trace_sched_handler { | |
778 | void (*switch_event)(struct trace_switch_event *, | |
779 | struct event *, | |
780 | int cpu, | |
781 | u64 timestamp, | |
782 | struct thread *thread); | |
783 | ||
39aeb52f | 784 | void (*runtime_event)(struct trace_runtime_event *, |
785 | struct event *, | |
786 | int cpu, | |
787 | u64 timestamp, | |
788 | struct thread *thread); | |
789 | ||
419ab0d6 FW |
790 | void (*wakeup_event)(struct trace_wakeup_event *, |
791 | struct event *, | |
792 | int cpu, | |
793 | u64 timestamp, | |
794 | struct thread *thread); | |
795 | ||
796 | void (*fork_event)(struct trace_fork_event *, | |
797 | struct event *, | |
798 | int cpu, | |
799 | u64 timestamp, | |
800 | struct thread *thread); | |
801 | }; | |
46538818 | 802 | |
46538818 | 803 | |
419ab0d6 FW |
804 | static void |
805 | replay_wakeup_event(struct trace_wakeup_event *wakeup_event, | |
806 | struct event *event, | |
807 | int cpu __used, | |
808 | u64 timestamp __used, | |
809 | struct thread *thread __used) | |
810 | { | |
811 | struct task_desc *waker, *wakee; | |
fbf94829 | 812 | |
ad236fd2 IM |
813 | if (verbose) { |
814 | printf("sched_wakeup event %p\n", event); | |
fbf94829 | 815 | |
ad236fd2 | 816 | printf(" ... pid %d woke up %s/%d\n", |
419ab0d6 FW |
817 | wakeup_event->common_pid, |
818 | wakeup_event->comm, | |
819 | wakeup_event->pid); | |
ad236fd2 | 820 | } |
fbf94829 | 821 | |
419ab0d6 FW |
822 | waker = register_pid(wakeup_event->common_pid, "<unknown>"); |
823 | wakee = register_pid(wakeup_event->pid, wakeup_event->comm); | |
fbf94829 IM |
824 | |
825 | add_sched_event_wakeup(waker, timestamp, wakee); | |
ec156764 IM |
826 | } |
827 | ||
d1153389 | 828 | static u64 cpu_last_switched[MAX_CPUS]; |
fbf94829 IM |
829 | |
830 | static void | |
419ab0d6 FW |
831 | replay_switch_event(struct trace_switch_event *switch_event, |
832 | struct event *event, | |
833 | int cpu, | |
834 | u64 timestamp, | |
835 | struct thread *thread __used) | |
ec156764 | 836 | { |
fbf94829 IM |
837 | struct task_desc *prev, *next; |
838 | u64 timestamp0; | |
839 | s64 delta; | |
840 | ||
ad236fd2 IM |
841 | if (verbose) |
842 | printf("sched_switch event %p\n", event); | |
843 | ||
fbf94829 IM |
844 | if (cpu >= MAX_CPUS || cpu < 0) |
845 | return; | |
846 | ||
847 | timestamp0 = cpu_last_switched[cpu]; | |
848 | if (timestamp0) | |
849 | delta = timestamp - timestamp0; | |
850 | else | |
851 | delta = 0; | |
852 | ||
853 | if (delta < 0) | |
854 | die("hm, delta: %Ld < 0 ?\n", delta); | |
855 | ||
ad236fd2 IM |
856 | if (verbose) { |
857 | printf(" ... switch from %s/%d to %s/%d [ran %Ld nsecs]\n", | |
419ab0d6 FW |
858 | switch_event->prev_comm, switch_event->prev_pid, |
859 | switch_event->next_comm, switch_event->next_pid, | |
ad236fd2 IM |
860 | delta); |
861 | } | |
fbf94829 | 862 | |
419ab0d6 FW |
863 | prev = register_pid(switch_event->prev_pid, switch_event->prev_comm); |
864 | next = register_pid(switch_event->next_pid, switch_event->next_comm); | |
fbf94829 IM |
865 | |
866 | cpu_last_switched[cpu] = timestamp; | |
867 | ||
868 | add_sched_event_run(prev, timestamp, delta); | |
419ab0d6 | 869 | add_sched_event_sleep(prev, timestamp, switch_event->prev_state); |
fbf94829 IM |
870 | } |
871 | ||
fbf94829 | 872 | |
419ab0d6 FW |
873 | static void |
874 | replay_fork_event(struct trace_fork_event *fork_event, | |
875 | struct event *event, | |
876 | int cpu __used, | |
877 | u64 timestamp __used, | |
878 | struct thread *thread __used) | |
879 | { | |
880 | if (verbose) { | |
881 | printf("sched_fork event %p\n", event); | |
882 | printf("... parent: %s/%d\n", fork_event->parent_comm, fork_event->parent_pid); | |
883 | printf("... child: %s/%d\n", fork_event->child_comm, fork_event->child_pid); | |
884 | } | |
885 | register_pid(fork_event->parent_pid, fork_event->parent_comm); | |
886 | register_pid(fork_event->child_pid, fork_event->child_comm); | |
887 | } | |
fbf94829 | 888 | |
419ab0d6 | 889 | static struct trace_sched_handler replay_ops = { |
ea92ed5a IM |
890 | .wakeup_event = replay_wakeup_event, |
891 | .switch_event = replay_switch_event, | |
892 | .fork_event = replay_fork_event, | |
fbf94829 IM |
893 | }; |
894 | ||
b1ffe8f3 IM |
895 | struct sort_dimension { |
896 | const char *name; | |
b5fae128 | 897 | sort_fn_t cmp; |
b1ffe8f3 IM |
898 | struct list_head list; |
899 | }; | |
900 | ||
901 | static LIST_HEAD(cmp_pid); | |
902 | ||
daa1d7a5 | 903 | static int |
39aeb52f | 904 | thread_lat_cmp(struct list_head *list, struct work_atoms *l, struct work_atoms *r) |
daa1d7a5 FW |
905 | { |
906 | struct sort_dimension *sort; | |
907 | int ret = 0; | |
908 | ||
b5fae128 IM |
909 | BUG_ON(list_empty(list)); |
910 | ||
daa1d7a5 FW |
911 | list_for_each_entry(sort, list, list) { |
912 | ret = sort->cmp(l, r); | |
913 | if (ret) | |
914 | return ret; | |
915 | } | |
916 | ||
917 | return ret; | |
918 | } | |
919 | ||
39aeb52f | 920 | static struct work_atoms * |
b5fae128 IM |
921 | thread_atoms_search(struct rb_root *root, struct thread *thread, |
922 | struct list_head *sort_list) | |
923 | { | |
924 | struct rb_node *node = root->rb_node; | |
39aeb52f | 925 | struct work_atoms key = { .thread = thread }; |
b5fae128 IM |
926 | |
927 | while (node) { | |
39aeb52f | 928 | struct work_atoms *atoms; |
b5fae128 IM |
929 | int cmp; |
930 | ||
39aeb52f | 931 | atoms = container_of(node, struct work_atoms, node); |
b5fae128 IM |
932 | |
933 | cmp = thread_lat_cmp(sort_list, &key, atoms); | |
934 | if (cmp > 0) | |
935 | node = node->rb_left; | |
936 | else if (cmp < 0) | |
937 | node = node->rb_right; | |
938 | else { | |
939 | BUG_ON(thread != atoms->thread); | |
940 | return atoms; | |
941 | } | |
942 | } | |
943 | return NULL; | |
944 | } | |
945 | ||
cdce9d73 | 946 | static void |
39aeb52f | 947 | __thread_latency_insert(struct rb_root *root, struct work_atoms *data, |
daa1d7a5 | 948 | struct list_head *sort_list) |
cdce9d73 FW |
949 | { |
950 | struct rb_node **new = &(root->rb_node), *parent = NULL; | |
951 | ||
952 | while (*new) { | |
39aeb52f | 953 | struct work_atoms *this; |
daa1d7a5 | 954 | int cmp; |
cdce9d73 | 955 | |
39aeb52f | 956 | this = container_of(*new, struct work_atoms, node); |
cdce9d73 | 957 | parent = *new; |
daa1d7a5 FW |
958 | |
959 | cmp = thread_lat_cmp(sort_list, data, this); | |
960 | ||
961 | if (cmp > 0) | |
cdce9d73 | 962 | new = &((*new)->rb_left); |
cdce9d73 | 963 | else |
daa1d7a5 | 964 | new = &((*new)->rb_right); |
cdce9d73 FW |
965 | } |
966 | ||
967 | rb_link_node(&data->node, parent, new); | |
968 | rb_insert_color(&data->node, root); | |
969 | } | |
970 | ||
b1ffe8f3 | 971 | static void thread_atoms_insert(struct thread *thread) |
cdce9d73 | 972 | { |
39aeb52f | 973 | struct work_atoms *atoms; |
b1ffe8f3 | 974 | |
17562205 FW |
975 | atoms = calloc(sizeof(*atoms), 1); |
976 | if (!atoms) | |
cdce9d73 FW |
977 | die("No memory"); |
978 | ||
17562205 | 979 | atoms->thread = thread; |
39aeb52f | 980 | INIT_LIST_HEAD(&atoms->work_list); |
b1ffe8f3 | 981 | __thread_latency_insert(&atom_root, atoms, &cmp_pid); |
cdce9d73 FW |
982 | } |
983 | ||
984 | static void | |
985 | latency_fork_event(struct trace_fork_event *fork_event __used, | |
986 | struct event *event __used, | |
987 | int cpu __used, | |
988 | u64 timestamp __used, | |
989 | struct thread *thread __used) | |
990 | { | |
991 | /* should insert the newcomer */ | |
992 | } | |
993 | ||
ea92ed5a | 994 | __used |
cdce9d73 FW |
995 | static char sched_out_state(struct trace_switch_event *switch_event) |
996 | { | |
997 | const char *str = TASK_STATE_TO_CHAR_STR; | |
998 | ||
999 | return str[switch_event->prev_state]; | |
1000 | } | |
1001 | ||
1002 | static void | |
39aeb52f | 1003 | add_sched_out_event(struct work_atoms *atoms, |
1004 | char run_state, | |
1005 | u64 timestamp) | |
cdce9d73 | 1006 | { |
b1ffe8f3 | 1007 | struct work_atom *atom; |
cdce9d73 | 1008 | |
b1ffe8f3 IM |
1009 | atom = calloc(sizeof(*atom), 1); |
1010 | if (!atom) | |
cdce9d73 FW |
1011 | die("Non memory"); |
1012 | ||
aa1ab9d2 FW |
1013 | atom->sched_out_time = timestamp; |
1014 | ||
39aeb52f | 1015 | if (run_state == 'R') { |
b1ffe8f3 | 1016 | atom->state = THREAD_WAIT_CPU; |
aa1ab9d2 | 1017 | atom->wake_up_time = atom->sched_out_time; |
c6ced611 FW |
1018 | } |
1019 | ||
39aeb52f | 1020 | list_add_tail(&atom->list, &atoms->work_list); |
cdce9d73 FW |
1021 | } |
1022 | ||
1023 | static void | |
39aeb52f | 1024 | add_runtime_event(struct work_atoms *atoms, u64 delta, u64 timestamp __used) |
1025 | { | |
1026 | struct work_atom *atom; | |
1027 | ||
1028 | BUG_ON(list_empty(&atoms->work_list)); | |
1029 | ||
1030 | atom = list_entry(atoms->work_list.prev, struct work_atom, list); | |
1031 | ||
1032 | atom->runtime += delta; | |
1033 | atoms->total_runtime += delta; | |
1034 | } | |
1035 | ||
1036 | static void | |
1037 | add_sched_in_event(struct work_atoms *atoms, u64 timestamp) | |
cdce9d73 | 1038 | { |
b1ffe8f3 | 1039 | struct work_atom *atom; |
66685678 | 1040 | u64 delta; |
cdce9d73 | 1041 | |
39aeb52f | 1042 | if (list_empty(&atoms->work_list)) |
cdce9d73 FW |
1043 | return; |
1044 | ||
39aeb52f | 1045 | atom = list_entry(atoms->work_list.prev, struct work_atom, list); |
cdce9d73 | 1046 | |
b1ffe8f3 | 1047 | if (atom->state != THREAD_WAIT_CPU) |
cdce9d73 FW |
1048 | return; |
1049 | ||
b1ffe8f3 IM |
1050 | if (timestamp < atom->wake_up_time) { |
1051 | atom->state = THREAD_IGNORE; | |
cdce9d73 FW |
1052 | return; |
1053 | } | |
1054 | ||
b1ffe8f3 IM |
1055 | atom->state = THREAD_SCHED_IN; |
1056 | atom->sched_in_time = timestamp; | |
66685678 | 1057 | |
b1ffe8f3 | 1058 | delta = atom->sched_in_time - atom->wake_up_time; |
66685678 FW |
1059 | atoms->total_lat += delta; |
1060 | if (delta > atoms->max_lat) | |
1061 | atoms->max_lat = delta; | |
1062 | atoms->nb_atoms++; | |
cdce9d73 FW |
1063 | } |
1064 | ||
cdce9d73 FW |
1065 | static void |
1066 | latency_switch_event(struct trace_switch_event *switch_event, | |
1067 | struct event *event __used, | |
ea92ed5a | 1068 | int cpu, |
cdce9d73 FW |
1069 | u64 timestamp, |
1070 | struct thread *thread __used) | |
1071 | { | |
39aeb52f | 1072 | struct work_atoms *out_events, *in_events; |
cdce9d73 | 1073 | struct thread *sched_out, *sched_in; |
ea92ed5a IM |
1074 | u64 timestamp0; |
1075 | s64 delta; | |
1076 | ||
39aeb52f | 1077 | BUG_ON(cpu >= MAX_CPUS || cpu < 0); |
ea92ed5a IM |
1078 | |
1079 | timestamp0 = cpu_last_switched[cpu]; | |
1080 | cpu_last_switched[cpu] = timestamp; | |
1081 | if (timestamp0) | |
1082 | delta = timestamp - timestamp0; | |
1083 | else | |
1084 | delta = 0; | |
1085 | ||
1086 | if (delta < 0) | |
1087 | die("hm, delta: %Ld < 0 ?\n", delta); | |
1088 | ||
cdce9d73 FW |
1089 | |
1090 | sched_out = threads__findnew(switch_event->prev_pid, &threads, &last_match); | |
1091 | sched_in = threads__findnew(switch_event->next_pid, &threads, &last_match); | |
1092 | ||
39aeb52f | 1093 | out_events = thread_atoms_search(&atom_root, sched_out, &cmp_pid); |
1094 | if (!out_events) { | |
1095 | thread_atoms_insert(sched_out); | |
1096 | out_events = thread_atoms_search(&atom_root, sched_out, &cmp_pid); | |
1097 | if (!out_events) | |
1098 | die("out-event: Internal tree error"); | |
1099 | } | |
1100 | add_sched_out_event(out_events, sched_out_state(switch_event), timestamp); | |
1101 | ||
1102 | in_events = thread_atoms_search(&atom_root, sched_in, &cmp_pid); | |
1103 | if (!in_events) { | |
b1ffe8f3 | 1104 | thread_atoms_insert(sched_in); |
39aeb52f | 1105 | in_events = thread_atoms_search(&atom_root, sched_in, &cmp_pid); |
1106 | if (!in_events) | |
1107 | die("in-event: Internal tree error"); | |
1108 | /* | |
1109 | * Take came in we have not heard about yet, | |
1110 | * add in an initial atom in runnable state: | |
1111 | */ | |
1112 | add_sched_out_event(in_events, 'R', timestamp); | |
cdce9d73 | 1113 | } |
39aeb52f | 1114 | add_sched_in_event(in_events, timestamp); |
1115 | } | |
cdce9d73 | 1116 | |
39aeb52f | 1117 | static void |
1118 | latency_runtime_event(struct trace_runtime_event *runtime_event, | |
1119 | struct event *event __used, | |
1120 | int cpu, | |
1121 | u64 timestamp, | |
1122 | struct thread *this_thread __used) | |
1123 | { | |
1124 | struct work_atoms *atoms; | |
1125 | struct thread *thread; | |
1126 | ||
1127 | BUG_ON(cpu >= MAX_CPUS || cpu < 0); | |
1128 | ||
1129 | thread = threads__findnew(runtime_event->pid, &threads, &last_match); | |
1130 | atoms = thread_atoms_search(&atom_root, thread, &cmp_pid); | |
1131 | if (!atoms) { | |
1132 | thread_atoms_insert(thread); | |
1133 | atoms = thread_atoms_search(&atom_root, thread, &cmp_pid); | |
1134 | if (!atoms) | |
1135 | die("in-event: Internal tree error"); | |
1136 | add_sched_out_event(atoms, 'R', timestamp); | |
cdce9d73 FW |
1137 | } |
1138 | ||
39aeb52f | 1139 | add_runtime_event(atoms, runtime_event->runtime, timestamp); |
cdce9d73 FW |
1140 | } |
1141 | ||
1142 | static void | |
1143 | latency_wakeup_event(struct trace_wakeup_event *wakeup_event, | |
39aeb52f | 1144 | struct event *__event __used, |
cdce9d73 FW |
1145 | int cpu __used, |
1146 | u64 timestamp, | |
1147 | struct thread *thread __used) | |
1148 | { | |
39aeb52f | 1149 | struct work_atoms *atoms; |
b1ffe8f3 | 1150 | struct work_atom *atom; |
cdce9d73 FW |
1151 | struct thread *wakee; |
1152 | ||
1153 | /* Note for later, it may be interesting to observe the failing cases */ | |
1154 | if (!wakeup_event->success) | |
1155 | return; | |
1156 | ||
1157 | wakee = threads__findnew(wakeup_event->pid, &threads, &last_match); | |
b5fae128 | 1158 | atoms = thread_atoms_search(&atom_root, wakee, &cmp_pid); |
17562205 | 1159 | if (!atoms) { |
b1ffe8f3 | 1160 | thread_atoms_insert(wakee); |
39aeb52f | 1161 | atoms = thread_atoms_search(&atom_root, wakee, &cmp_pid); |
1162 | if (!atoms) | |
1163 | die("wakeup-event: Internal tree error"); | |
1164 | add_sched_out_event(atoms, 'S', timestamp); | |
cdce9d73 FW |
1165 | } |
1166 | ||
39aeb52f | 1167 | BUG_ON(list_empty(&atoms->work_list)); |
cdce9d73 | 1168 | |
39aeb52f | 1169 | atom = list_entry(atoms->work_list.prev, struct work_atom, list); |
cdce9d73 | 1170 | |
39aeb52f | 1171 | if (atom->state != THREAD_SLEEPING) { |
1172 | printf("boo2\n"); | |
cdce9d73 | 1173 | return; |
39aeb52f | 1174 | } |
cdce9d73 | 1175 | |
ea57c4f5 IM |
1176 | nr_timestamps++; |
1177 | if (atom->sched_out_time > timestamp) { | |
1178 | unordered_timestamps++; | |
aa1ab9d2 | 1179 | return; |
ea57c4f5 | 1180 | } |
aa1ab9d2 | 1181 | |
b1ffe8f3 IM |
1182 | atom->state = THREAD_WAIT_CPU; |
1183 | atom->wake_up_time = timestamp; | |
cdce9d73 FW |
1184 | } |
1185 | ||
1186 | static struct trace_sched_handler lat_ops = { | |
ea92ed5a IM |
1187 | .wakeup_event = latency_wakeup_event, |
1188 | .switch_event = latency_switch_event, | |
39aeb52f | 1189 | .runtime_event = latency_runtime_event, |
ea92ed5a | 1190 | .fork_event = latency_fork_event, |
cdce9d73 FW |
1191 | }; |
1192 | ||
39aeb52f | 1193 | static void output_lat_thread(struct work_atoms *work_list) |
cdce9d73 | 1194 | { |
cdce9d73 FW |
1195 | int i; |
1196 | int ret; | |
66685678 | 1197 | u64 avg; |
cdce9d73 | 1198 | |
39aeb52f | 1199 | if (!work_list->nb_atoms) |
cdce9d73 | 1200 | return; |
ea57c4f5 IM |
1201 | /* |
1202 | * Ignore idle threads: | |
1203 | */ | |
39aeb52f | 1204 | if (!work_list->thread->pid) |
ea57c4f5 | 1205 | return; |
cdce9d73 | 1206 | |
39aeb52f | 1207 | all_runtime += work_list->total_runtime; |
1208 | all_count += work_list->nb_atoms; | |
66685678 | 1209 | |
39aeb52f | 1210 | ret = printf(" %s-%d ", work_list->thread->comm, work_list->thread->pid); |
cdce9d73 | 1211 | |
08f69e6c | 1212 | for (i = 0; i < 24 - ret; i++) |
cdce9d73 FW |
1213 | printf(" "); |
1214 | ||
39aeb52f | 1215 | avg = work_list->total_lat / work_list->nb_atoms; |
cdce9d73 | 1216 | |
66685678 | 1217 | printf("|%9.3f ms |%9llu | avg:%9.3f ms | max:%9.3f ms |\n", |
39aeb52f | 1218 | (double)work_list->total_runtime / 1e6, |
1219 | work_list->nb_atoms, (double)avg / 1e6, | |
1220 | (double)work_list->max_lat / 1e6); | |
cdce9d73 FW |
1221 | } |
1222 | ||
39aeb52f | 1223 | static int pid_cmp(struct work_atoms *l, struct work_atoms *r) |
daa1d7a5 | 1224 | { |
daa1d7a5 FW |
1225 | if (l->thread->pid < r->thread->pid) |
1226 | return -1; | |
1227 | if (l->thread->pid > r->thread->pid) | |
1228 | return 1; | |
1229 | ||
1230 | return 0; | |
1231 | } | |
1232 | ||
1233 | static struct sort_dimension pid_sort_dimension = { | |
b5fae128 IM |
1234 | .name = "pid", |
1235 | .cmp = pid_cmp, | |
daa1d7a5 FW |
1236 | }; |
1237 | ||
39aeb52f | 1238 | static int avg_cmp(struct work_atoms *l, struct work_atoms *r) |
daa1d7a5 FW |
1239 | { |
1240 | u64 avgl, avgr; | |
1241 | ||
1242 | if (!l->nb_atoms) | |
1243 | return -1; | |
1244 | ||
1245 | if (!r->nb_atoms) | |
1246 | return 1; | |
1247 | ||
1248 | avgl = l->total_lat / l->nb_atoms; | |
1249 | avgr = r->total_lat / r->nb_atoms; | |
1250 | ||
1251 | if (avgl < avgr) | |
1252 | return -1; | |
1253 | if (avgl > avgr) | |
1254 | return 1; | |
1255 | ||
1256 | return 0; | |
1257 | } | |
1258 | ||
1259 | static struct sort_dimension avg_sort_dimension = { | |
b5fae128 IM |
1260 | .name = "avg", |
1261 | .cmp = avg_cmp, | |
daa1d7a5 FW |
1262 | }; |
1263 | ||
39aeb52f | 1264 | static int max_cmp(struct work_atoms *l, struct work_atoms *r) |
daa1d7a5 FW |
1265 | { |
1266 | if (l->max_lat < r->max_lat) | |
1267 | return -1; | |
1268 | if (l->max_lat > r->max_lat) | |
1269 | return 1; | |
1270 | ||
1271 | return 0; | |
1272 | } | |
1273 | ||
1274 | static struct sort_dimension max_sort_dimension = { | |
b5fae128 IM |
1275 | .name = "max", |
1276 | .cmp = max_cmp, | |
daa1d7a5 FW |
1277 | }; |
1278 | ||
39aeb52f | 1279 | static int switch_cmp(struct work_atoms *l, struct work_atoms *r) |
daa1d7a5 FW |
1280 | { |
1281 | if (l->nb_atoms < r->nb_atoms) | |
1282 | return -1; | |
1283 | if (l->nb_atoms > r->nb_atoms) | |
1284 | return 1; | |
1285 | ||
1286 | return 0; | |
1287 | } | |
1288 | ||
1289 | static struct sort_dimension switch_sort_dimension = { | |
b5fae128 IM |
1290 | .name = "switch", |
1291 | .cmp = switch_cmp, | |
daa1d7a5 FW |
1292 | }; |
1293 | ||
39aeb52f | 1294 | static int runtime_cmp(struct work_atoms *l, struct work_atoms *r) |
daa1d7a5 FW |
1295 | { |
1296 | if (l->total_runtime < r->total_runtime) | |
1297 | return -1; | |
1298 | if (l->total_runtime > r->total_runtime) | |
1299 | return 1; | |
1300 | ||
1301 | return 0; | |
1302 | } | |
1303 | ||
1304 | static struct sort_dimension runtime_sort_dimension = { | |
b5fae128 IM |
1305 | .name = "runtime", |
1306 | .cmp = runtime_cmp, | |
daa1d7a5 FW |
1307 | }; |
1308 | ||
1309 | static struct sort_dimension *available_sorts[] = { | |
1310 | &pid_sort_dimension, | |
1311 | &avg_sort_dimension, | |
1312 | &max_sort_dimension, | |
1313 | &switch_sort_dimension, | |
1314 | &runtime_sort_dimension, | |
1315 | }; | |
1316 | ||
1317 | #define NB_AVAILABLE_SORTS (int)(sizeof(available_sorts) / sizeof(struct sort_dimension *)) | |
1318 | ||
1319 | static LIST_HEAD(sort_list); | |
1320 | ||
1321 | static int sort_dimension__add(char *tok, struct list_head *list) | |
1322 | { | |
1323 | int i; | |
1324 | ||
1325 | for (i = 0; i < NB_AVAILABLE_SORTS; i++) { | |
1326 | if (!strcmp(available_sorts[i]->name, tok)) { | |
1327 | list_add_tail(&available_sorts[i]->list, list); | |
1328 | ||
1329 | return 0; | |
1330 | } | |
1331 | } | |
1332 | ||
1333 | return -1; | |
1334 | } | |
1335 | ||
1336 | static void setup_sorting(void); | |
1337 | ||
1338 | static void sort_lat(void) | |
1339 | { | |
1340 | struct rb_node *node; | |
1341 | ||
1342 | for (;;) { | |
39aeb52f | 1343 | struct work_atoms *data; |
b1ffe8f3 | 1344 | node = rb_first(&atom_root); |
daa1d7a5 FW |
1345 | if (!node) |
1346 | break; | |
1347 | ||
b1ffe8f3 | 1348 | rb_erase(node, &atom_root); |
39aeb52f | 1349 | data = rb_entry(node, struct work_atoms, node); |
b1ffe8f3 | 1350 | __thread_latency_insert(&sorted_atom_root, data, &sort_list); |
daa1d7a5 FW |
1351 | } |
1352 | } | |
1353 | ||
46f392c9 | 1354 | static void __cmd_lat(void) |
cdce9d73 FW |
1355 | { |
1356 | struct rb_node *next; | |
1357 | ||
46f392c9 IM |
1358 | setup_pager(); |
1359 | read_events(); | |
daa1d7a5 | 1360 | sort_lat(); |
46f392c9 | 1361 | |
08f69e6c | 1362 | printf("\n ---------------------------------------------------------------------------------------\n"); |
1363 | printf(" Task | Runtime ms | Switches | Average delay ms | Maximum delay ms |\n"); | |
1364 | printf(" ---------------------------------------------------------------------------------------\n"); | |
cdce9d73 | 1365 | |
b1ffe8f3 | 1366 | next = rb_first(&sorted_atom_root); |
cdce9d73 FW |
1367 | |
1368 | while (next) { | |
39aeb52f | 1369 | struct work_atoms *work_list; |
cdce9d73 | 1370 | |
39aeb52f | 1371 | work_list = rb_entry(next, struct work_atoms, node); |
1372 | output_lat_thread(work_list); | |
cdce9d73 FW |
1373 | next = rb_next(next); |
1374 | } | |
d9340c1d | 1375 | |
08f69e6c | 1376 | printf(" ---------------------------------------------------------------------------------------\n"); |
1377 | printf(" TOTAL: |%9.3f ms |%9Ld |", | |
73622626 | 1378 | (double)all_runtime/1e6, all_count); |
ea57c4f5 IM |
1379 | |
1380 | if (unordered_timestamps && nr_timestamps) { | |
1381 | printf(" INFO: %.2f%% unordered events.\n", | |
1382 | (double)unordered_timestamps/(double)nr_timestamps*100.0); | |
1383 | } else { | |
1384 | printf("\n"); | |
1385 | } | |
1386 | ||
08f69e6c | 1387 | printf(" -------------------------------------------------\n\n"); |
cdce9d73 | 1388 | } |
419ab0d6 FW |
1389 | |
1390 | static struct trace_sched_handler *trace_handler; | |
1391 | ||
fbf94829 | 1392 | static void |
419ab0d6 FW |
1393 | process_sched_wakeup_event(struct raw_event_sample *raw, |
1394 | struct event *event, | |
1395 | int cpu __used, | |
1396 | u64 timestamp __used, | |
1397 | struct thread *thread __used) | |
1398 | { | |
1399 | struct trace_wakeup_event wakeup_event; | |
1400 | ||
1401 | FILL_COMMON_FIELDS(wakeup_event, event, raw->data); | |
1402 | ||
1403 | FILL_ARRAY(wakeup_event, comm, event, raw->data); | |
1404 | FILL_FIELD(wakeup_event, pid, event, raw->data); | |
1405 | FILL_FIELD(wakeup_event, prio, event, raw->data); | |
1406 | FILL_FIELD(wakeup_event, success, event, raw->data); | |
1407 | FILL_FIELD(wakeup_event, cpu, event, raw->data); | |
1408 | ||
1409 | trace_handler->wakeup_event(&wakeup_event, event, cpu, timestamp, thread); | |
1410 | } | |
1411 | ||
1412 | static void | |
1413 | process_sched_switch_event(struct raw_event_sample *raw, | |
1414 | struct event *event, | |
1415 | int cpu __used, | |
1416 | u64 timestamp __used, | |
1417 | struct thread *thread __used) | |
1418 | { | |
1419 | struct trace_switch_event switch_event; | |
1420 | ||
1421 | FILL_COMMON_FIELDS(switch_event, event, raw->data); | |
1422 | ||
1423 | FILL_ARRAY(switch_event, prev_comm, event, raw->data); | |
1424 | FILL_FIELD(switch_event, prev_pid, event, raw->data); | |
1425 | FILL_FIELD(switch_event, prev_prio, event, raw->data); | |
1426 | FILL_FIELD(switch_event, prev_state, event, raw->data); | |
1427 | FILL_ARRAY(switch_event, next_comm, event, raw->data); | |
1428 | FILL_FIELD(switch_event, next_pid, event, raw->data); | |
1429 | FILL_FIELD(switch_event, next_prio, event, raw->data); | |
1430 | ||
1431 | trace_handler->switch_event(&switch_event, event, cpu, timestamp, thread); | |
1432 | } | |
1433 | ||
39aeb52f | 1434 | static void |
1435 | process_sched_runtime_event(struct raw_event_sample *raw, | |
1436 | struct event *event, | |
1437 | int cpu __used, | |
1438 | u64 timestamp __used, | |
1439 | struct thread *thread __used) | |
1440 | { | |
1441 | struct trace_runtime_event runtime_event; | |
1442 | ||
1443 | FILL_ARRAY(runtime_event, comm, event, raw->data); | |
1444 | FILL_FIELD(runtime_event, pid, event, raw->data); | |
1445 | FILL_FIELD(runtime_event, runtime, event, raw->data); | |
1446 | FILL_FIELD(runtime_event, vruntime, event, raw->data); | |
1447 | ||
1448 | trace_handler->runtime_event(&runtime_event, event, cpu, timestamp, thread); | |
1449 | } | |
1450 | ||
419ab0d6 FW |
1451 | static void |
1452 | process_sched_fork_event(struct raw_event_sample *raw, | |
1453 | struct event *event, | |
1454 | int cpu __used, | |
1455 | u64 timestamp __used, | |
1456 | struct thread *thread __used) | |
fbf94829 | 1457 | { |
46538818 FW |
1458 | struct trace_fork_event fork_event; |
1459 | ||
1460 | FILL_COMMON_FIELDS(fork_event, event, raw->data); | |
1461 | ||
1462 | FILL_ARRAY(fork_event, parent_comm, event, raw->data); | |
1463 | FILL_FIELD(fork_event, parent_pid, event, raw->data); | |
1464 | FILL_ARRAY(fork_event, child_comm, event, raw->data); | |
1465 | FILL_FIELD(fork_event, child_pid, event, raw->data); | |
1466 | ||
419ab0d6 | 1467 | trace_handler->fork_event(&fork_event, event, cpu, timestamp, thread); |
fbf94829 IM |
1468 | } |
1469 | ||
419ab0d6 FW |
1470 | static void |
1471 | process_sched_exit_event(struct event *event, | |
1472 | int cpu __used, | |
1473 | u64 timestamp __used, | |
1474 | struct thread *thread __used) | |
fbf94829 | 1475 | { |
ad236fd2 IM |
1476 | if (verbose) |
1477 | printf("sched_exit event %p\n", event); | |
ec156764 IM |
1478 | } |
1479 | ||
1480 | static void | |
ad236fd2 | 1481 | process_raw_event(event_t *raw_event __used, void *more_data, |
ec156764 IM |
1482 | int cpu, u64 timestamp, struct thread *thread) |
1483 | { | |
46538818 | 1484 | struct raw_event_sample *raw = more_data; |
ec156764 IM |
1485 | struct event *event; |
1486 | int type; | |
1487 | ||
1488 | type = trace_parse_common_type(raw->data); | |
1489 | event = trace_find_event(type); | |
1490 | ||
ec156764 | 1491 | if (!strcmp(event->name, "sched_switch")) |
46538818 | 1492 | process_sched_switch_event(raw, event, cpu, timestamp, thread); |
39aeb52f | 1493 | if (!strcmp(event->name, "sched_stat_runtime")) |
1494 | process_sched_runtime_event(raw, event, cpu, timestamp, thread); | |
ec156764 | 1495 | if (!strcmp(event->name, "sched_wakeup")) |
46538818 | 1496 | process_sched_wakeup_event(raw, event, cpu, timestamp, thread); |
fbf94829 | 1497 | if (!strcmp(event->name, "sched_wakeup_new")) |
46538818 | 1498 | process_sched_wakeup_event(raw, event, cpu, timestamp, thread); |
fbf94829 | 1499 | if (!strcmp(event->name, "sched_process_fork")) |
46538818 | 1500 | process_sched_fork_event(raw, event, cpu, timestamp, thread); |
fbf94829 IM |
1501 | if (!strcmp(event->name, "sched_process_exit")) |
1502 | process_sched_exit_event(event, cpu, timestamp, thread); | |
ec156764 IM |
1503 | } |
1504 | ||
0a02ad93 IM |
1505 | static int |
1506 | process_sample_event(event_t *event, unsigned long offset, unsigned long head) | |
1507 | { | |
1508 | char level; | |
1509 | int show = 0; | |
1510 | struct dso *dso = NULL; | |
1511 | struct thread *thread; | |
1512 | u64 ip = event->ip.ip; | |
1513 | u64 timestamp = -1; | |
1514 | u32 cpu = -1; | |
1515 | u64 period = 1; | |
1516 | void *more_data = event->ip.__more_data; | |
1517 | int cpumode; | |
1518 | ||
1519 | thread = threads__findnew(event->ip.pid, &threads, &last_match); | |
1520 | ||
1521 | if (sample_type & PERF_SAMPLE_TIME) { | |
1522 | timestamp = *(u64 *)more_data; | |
1523 | more_data += sizeof(u64); | |
1524 | } | |
1525 | ||
1526 | if (sample_type & PERF_SAMPLE_CPU) { | |
1527 | cpu = *(u32 *)more_data; | |
1528 | more_data += sizeof(u32); | |
1529 | more_data += sizeof(u32); /* reserved */ | |
1530 | } | |
1531 | ||
1532 | if (sample_type & PERF_SAMPLE_PERIOD) { | |
1533 | period = *(u64 *)more_data; | |
1534 | more_data += sizeof(u64); | |
1535 | } | |
1536 | ||
1537 | dump_printf("%p [%p]: PERF_EVENT_SAMPLE (IP, %d): %d/%d: %p period: %Ld\n", | |
1538 | (void *)(offset + head), | |
1539 | (void *)(long)(event->header.size), | |
1540 | event->header.misc, | |
1541 | event->ip.pid, event->ip.tid, | |
1542 | (void *)(long)ip, | |
1543 | (long long)period); | |
1544 | ||
1545 | dump_printf(" ... thread: %s:%d\n", thread->comm, thread->pid); | |
1546 | ||
1547 | if (thread == NULL) { | |
1548 | eprintf("problem processing %d event, skipping it.\n", | |
1549 | event->header.type); | |
1550 | return -1; | |
1551 | } | |
1552 | ||
1553 | cpumode = event->header.misc & PERF_EVENT_MISC_CPUMODE_MASK; | |
1554 | ||
1555 | if (cpumode == PERF_EVENT_MISC_KERNEL) { | |
1556 | show = SHOW_KERNEL; | |
1557 | level = 'k'; | |
1558 | ||
1559 | dso = kernel_dso; | |
1560 | ||
1561 | dump_printf(" ...... dso: %s\n", dso->name); | |
1562 | ||
1563 | } else if (cpumode == PERF_EVENT_MISC_USER) { | |
1564 | ||
1565 | show = SHOW_USER; | |
1566 | level = '.'; | |
1567 | ||
1568 | } else { | |
1569 | show = SHOW_HV; | |
1570 | level = 'H'; | |
1571 | ||
1572 | dso = hypervisor_dso; | |
1573 | ||
1574 | dump_printf(" ...... dso: [hypervisor]\n"); | |
1575 | } | |
1576 | ||
ec156764 IM |
1577 | if (sample_type & PERF_SAMPLE_RAW) |
1578 | process_raw_event(event, more_data, cpu, timestamp, thread); | |
0a02ad93 IM |
1579 | |
1580 | return 0; | |
1581 | } | |
1582 | ||
1583 | static int | |
1584 | process_event(event_t *event, unsigned long offset, unsigned long head) | |
1585 | { | |
1586 | trace_event(event); | |
1587 | ||
1588 | switch (event->header.type) { | |
1589 | case PERF_EVENT_MMAP ... PERF_EVENT_LOST: | |
1590 | return 0; | |
1591 | ||
1592 | case PERF_EVENT_COMM: | |
1593 | return process_comm_event(event, offset, head); | |
1594 | ||
1595 | case PERF_EVENT_EXIT ... PERF_EVENT_READ: | |
1596 | return 0; | |
1597 | ||
1598 | case PERF_EVENT_SAMPLE: | |
1599 | return process_sample_event(event, offset, head); | |
1600 | ||
1601 | case PERF_EVENT_MAX: | |
1602 | default: | |
1603 | return -1; | |
1604 | } | |
1605 | ||
1606 | return 0; | |
1607 | } | |
1608 | ||
46f392c9 | 1609 | static int read_events(void) |
0a02ad93 IM |
1610 | { |
1611 | int ret, rc = EXIT_FAILURE; | |
1612 | unsigned long offset = 0; | |
1613 | unsigned long head = 0; | |
1614 | struct stat perf_stat; | |
1615 | event_t *event; | |
1616 | uint32_t size; | |
1617 | char *buf; | |
1618 | ||
1619 | trace_report(); | |
1620 | register_idle_thread(&threads, &last_match); | |
1621 | ||
1622 | input = open(input_name, O_RDONLY); | |
1623 | if (input < 0) { | |
1624 | perror("failed to open file"); | |
1625 | exit(-1); | |
1626 | } | |
1627 | ||
1628 | ret = fstat(input, &perf_stat); | |
1629 | if (ret < 0) { | |
1630 | perror("failed to stat file"); | |
1631 | exit(-1); | |
1632 | } | |
1633 | ||
1634 | if (!perf_stat.st_size) { | |
1635 | fprintf(stderr, "zero-sized file, nothing to do!\n"); | |
1636 | exit(0); | |
1637 | } | |
1638 | header = perf_header__read(input); | |
1639 | head = header->data_offset; | |
1640 | sample_type = perf_header__sample_type(header); | |
1641 | ||
1642 | if (!(sample_type & PERF_SAMPLE_RAW)) | |
1643 | die("No trace sample to read. Did you call perf record " | |
1644 | "without -R?"); | |
1645 | ||
1646 | if (load_kernel() < 0) { | |
1647 | perror("failed to load kernel symbols"); | |
1648 | return EXIT_FAILURE; | |
1649 | } | |
1650 | ||
1651 | remap: | |
1652 | buf = (char *)mmap(NULL, page_size * mmap_window, PROT_READ, | |
1653 | MAP_SHARED, input, offset); | |
1654 | if (buf == MAP_FAILED) { | |
1655 | perror("failed to mmap file"); | |
1656 | exit(-1); | |
1657 | } | |
1658 | ||
1659 | more: | |
1660 | event = (event_t *)(buf + head); | |
1661 | ||
1662 | size = event->header.size; | |
1663 | if (!size) | |
1664 | size = 8; | |
1665 | ||
1666 | if (head + event->header.size >= page_size * mmap_window) { | |
1667 | unsigned long shift = page_size * (head / page_size); | |
1668 | int res; | |
1669 | ||
1670 | res = munmap(buf, page_size * mmap_window); | |
1671 | assert(res == 0); | |
1672 | ||
1673 | offset += shift; | |
1674 | head -= shift; | |
1675 | goto remap; | |
1676 | } | |
1677 | ||
1678 | size = event->header.size; | |
1679 | ||
1680 | ||
1681 | if (!size || process_event(event, offset, head) < 0) { | |
1682 | ||
1683 | /* | |
1684 | * assume we lost track of the stream, check alignment, and | |
1685 | * increment a single u64 in the hope to catch on again 'soon'. | |
1686 | */ | |
1687 | ||
1688 | if (unlikely(head & 7)) | |
1689 | head &= ~7ULL; | |
1690 | ||
1691 | size = 8; | |
1692 | } | |
1693 | ||
1694 | head += size; | |
1695 | ||
1696 | if (offset + head < (unsigned long)perf_stat.st_size) | |
1697 | goto more; | |
1698 | ||
1699 | rc = EXIT_SUCCESS; | |
1700 | close(input); | |
1701 | ||
1702 | return rc; | |
1703 | } | |
1704 | ||
46f392c9 | 1705 | static const char * const sched_usage[] = { |
c13f0d3c | 1706 | "perf sched [<options>] {record|latency|replay|trace}", |
0a02ad93 IM |
1707 | NULL |
1708 | }; | |
1709 | ||
f2858d8a IM |
1710 | static const struct option sched_options[] = { |
1711 | OPT_BOOLEAN('v', "verbose", &verbose, | |
1712 | "be more verbose (show symbol address, etc)"), | |
0a02ad93 IM |
1713 | OPT_BOOLEAN('D', "dump-raw-trace", &dump_trace, |
1714 | "dump raw trace in ASCII"), | |
f2858d8a IM |
1715 | OPT_END() |
1716 | }; | |
1717 | ||
1718 | static const char * const latency_usage[] = { | |
1719 | "perf sched latency [<options>]", | |
1720 | NULL | |
1721 | }; | |
1722 | ||
1723 | static const struct option latency_options[] = { | |
daa1d7a5 FW |
1724 | OPT_STRING('s', "sort", &sort_order, "key[,key2...]", |
1725 | "sort by key(s): runtime, switch, avg, max"), | |
0a02ad93 IM |
1726 | OPT_BOOLEAN('v', "verbose", &verbose, |
1727 | "be more verbose (show symbol address, etc)"), | |
f2858d8a IM |
1728 | OPT_BOOLEAN('D', "dump-raw-trace", &dump_trace, |
1729 | "dump raw trace in ASCII"), | |
1730 | OPT_END() | |
1731 | }; | |
1732 | ||
1733 | static const char * const replay_usage[] = { | |
1734 | "perf sched replay [<options>]", | |
1735 | NULL | |
1736 | }; | |
1737 | ||
1738 | static const struct option replay_options[] = { | |
1739 | OPT_INTEGER('r', "repeat", &replay_repeat, | |
1740 | "repeat the workload replay N times (-1: infinite)"), | |
1741 | OPT_BOOLEAN('v', "verbose", &verbose, | |
1742 | "be more verbose (show symbol address, etc)"), | |
1743 | OPT_BOOLEAN('D', "dump-raw-trace", &dump_trace, | |
1744 | "dump raw trace in ASCII"), | |
0a02ad93 IM |
1745 | OPT_END() |
1746 | }; | |
1747 | ||
daa1d7a5 FW |
1748 | static void setup_sorting(void) |
1749 | { | |
1750 | char *tmp, *tok, *str = strdup(sort_order); | |
1751 | ||
1752 | for (tok = strtok_r(str, ", ", &tmp); | |
1753 | tok; tok = strtok_r(NULL, ", ", &tmp)) { | |
1754 | if (sort_dimension__add(tok, &sort_list) < 0) { | |
1755 | error("Unknown --sort key: `%s'", tok); | |
f2858d8a | 1756 | usage_with_options(latency_usage, latency_options); |
daa1d7a5 FW |
1757 | } |
1758 | } | |
1759 | ||
1760 | free(str); | |
1761 | ||
1762 | sort_dimension__add((char *)"pid", &cmp_pid); | |
1763 | } | |
1764 | ||
1fc35b29 IM |
1765 | static const char *record_args[] = { |
1766 | "record", | |
1767 | "-a", | |
1768 | "-R", | |
d1302522 | 1769 | "-M", |
ea57c4f5 | 1770 | "-f", |
1fc35b29 IM |
1771 | "-c", "1", |
1772 | "-e", "sched:sched_switch:r", | |
1773 | "-e", "sched:sched_stat_wait:r", | |
1774 | "-e", "sched:sched_stat_sleep:r", | |
1775 | "-e", "sched:sched_stat_iowait:r", | |
ea57c4f5 | 1776 | "-e", "sched:sched_stat_runtime:r", |
1fc35b29 IM |
1777 | "-e", "sched:sched_process_exit:r", |
1778 | "-e", "sched:sched_process_fork:r", | |
1779 | "-e", "sched:sched_wakeup:r", | |
1780 | "-e", "sched:sched_migrate_task:r", | |
1781 | }; | |
1782 | ||
1783 | static int __cmd_record(int argc, const char **argv) | |
1784 | { | |
1785 | unsigned int rec_argc, i, j; | |
1786 | const char **rec_argv; | |
1787 | ||
1788 | rec_argc = ARRAY_SIZE(record_args) + argc - 1; | |
1789 | rec_argv = calloc(rec_argc + 1, sizeof(char *)); | |
1790 | ||
1791 | for (i = 0; i < ARRAY_SIZE(record_args); i++) | |
1792 | rec_argv[i] = strdup(record_args[i]); | |
1793 | ||
1794 | for (j = 1; j < (unsigned int)argc; j++, i++) | |
1795 | rec_argv[i] = argv[j]; | |
1796 | ||
1797 | BUG_ON(i != rec_argc); | |
1798 | ||
1799 | return cmd_record(i, rec_argv, NULL); | |
1800 | } | |
1801 | ||
0a02ad93 IM |
1802 | int cmd_sched(int argc, const char **argv, const char *prefix __used) |
1803 | { | |
1804 | symbol__init(); | |
1805 | page_size = getpagesize(); | |
1806 | ||
f2858d8a IM |
1807 | argc = parse_options(argc, argv, sched_options, sched_usage, |
1808 | PARSE_OPT_STOP_AT_NON_OPTION); | |
1809 | if (!argc) | |
1810 | usage_with_options(sched_usage, sched_options); | |
0a02ad93 | 1811 | |
1fc35b29 IM |
1812 | if (!strncmp(argv[0], "rec", 3)) { |
1813 | return __cmd_record(argc, argv); | |
1814 | } else if (!strncmp(argv[0], "lat", 3)) { | |
cdce9d73 | 1815 | trace_handler = &lat_ops; |
f2858d8a IM |
1816 | if (argc > 1) { |
1817 | argc = parse_options(argc, argv, latency_options, latency_usage, 0); | |
1818 | if (argc) | |
1819 | usage_with_options(latency_usage, latency_options); | |
f2858d8a | 1820 | } |
b5fae128 | 1821 | setup_sorting(); |
46f392c9 | 1822 | __cmd_lat(); |
f2858d8a IM |
1823 | } else if (!strncmp(argv[0], "rep", 3)) { |
1824 | trace_handler = &replay_ops; | |
1825 | if (argc) { | |
1826 | argc = parse_options(argc, argv, replay_options, replay_usage, 0); | |
1827 | if (argc) | |
1828 | usage_with_options(replay_usage, replay_options); | |
1829 | } | |
1830 | __cmd_replay(); | |
c13f0d3c IM |
1831 | } else if (!strcmp(argv[0], "trace")) { |
1832 | /* | |
1833 | * Aliased to 'perf trace' for now: | |
1834 | */ | |
1835 | return cmd_trace(argc, argv, prefix); | |
f2858d8a IM |
1836 | } else { |
1837 | usage_with_options(sched_usage, sched_options); | |
1838 | } | |
1839 | ||
ec156764 | 1840 | return 0; |
0a02ad93 | 1841 | } |