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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 | 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 perf_header *header; |
28 | static u64 sample_type; | |
0a02ad93 | 29 | |
daa1d7a5 FW |
30 | static char default_sort_order[] = "avg, max, switch, runtime"; |
31 | static char *sort_order = default_sort_order; | |
32 | ||
55ffb7a6 MG |
33 | static int profile_cpu = -1; |
34 | ||
016e92fb FW |
35 | static char *cwd; |
36 | static int cwdlen; | |
37 | ||
b1ffe8f3 IM |
38 | #define PR_SET_NAME 15 /* Set process name */ |
39 | #define MAX_CPUS 4096 | |
0a02ad93 | 40 | |
b1ffe8f3 IM |
41 | static u64 run_measurement_overhead; |
42 | static u64 sleep_measurement_overhead; | |
ec156764 | 43 | |
b1ffe8f3 IM |
44 | #define COMM_LEN 20 |
45 | #define SYM_LEN 129 | |
ec156764 | 46 | |
b1ffe8f3 | 47 | #define MAX_PID 65536 |
ec156764 | 48 | |
b1ffe8f3 | 49 | static unsigned long nr_tasks; |
ec156764 | 50 | |
39aeb52f | 51 | struct sched_atom; |
ec156764 | 52 | |
b1ffe8f3 IM |
53 | struct task_desc { |
54 | unsigned long nr; | |
55 | unsigned long pid; | |
56 | char comm[COMM_LEN]; | |
ec156764 | 57 | |
b1ffe8f3 IM |
58 | unsigned long nr_events; |
59 | unsigned long curr_event; | |
39aeb52f | 60 | struct sched_atom **atoms; |
b1ffe8f3 IM |
61 | |
62 | pthread_t thread; | |
63 | sem_t sleep_sem; | |
ec156764 | 64 | |
b1ffe8f3 IM |
65 | sem_t ready_for_work; |
66 | sem_t work_done_sem; | |
67 | ||
68 | u64 cpu_usage; | |
69 | }; | |
70 | ||
71 | enum sched_event_type { | |
72 | SCHED_EVENT_RUN, | |
73 | SCHED_EVENT_SLEEP, | |
74 | SCHED_EVENT_WAKEUP, | |
55ffb7a6 | 75 | SCHED_EVENT_MIGRATION, |
b1ffe8f3 IM |
76 | }; |
77 | ||
39aeb52f | 78 | struct sched_atom { |
b1ffe8f3 IM |
79 | enum sched_event_type type; |
80 | u64 timestamp; | |
81 | u64 duration; | |
82 | unsigned long nr; | |
83 | int specific_wait; | |
84 | sem_t *wait_sem; | |
85 | struct task_desc *wakee; | |
86 | }; | |
87 | ||
88 | static struct task_desc *pid_to_task[MAX_PID]; | |
89 | ||
90 | static struct task_desc **tasks; | |
91 | ||
92 | static pthread_mutex_t start_work_mutex = PTHREAD_MUTEX_INITIALIZER; | |
93 | static u64 start_time; | |
94 | ||
95 | static pthread_mutex_t work_done_wait_mutex = PTHREAD_MUTEX_INITIALIZER; | |
ec156764 | 96 | |
b1ffe8f3 IM |
97 | static unsigned long nr_run_events; |
98 | static unsigned long nr_sleep_events; | |
99 | static unsigned long nr_wakeup_events; | |
100 | ||
101 | static unsigned long nr_sleep_corrections; | |
102 | static unsigned long nr_run_events_optimized; | |
103 | ||
104 | static unsigned long targetless_wakeups; | |
105 | static unsigned long multitarget_wakeups; | |
106 | ||
107 | static u64 cpu_usage; | |
108 | static u64 runavg_cpu_usage; | |
109 | static u64 parent_cpu_usage; | |
110 | static u64 runavg_parent_cpu_usage; | |
111 | ||
112 | static unsigned long nr_runs; | |
113 | static u64 sum_runtime; | |
114 | static u64 sum_fluct; | |
115 | static u64 run_avg; | |
116 | ||
117 | static unsigned long replay_repeat = 10; | |
ea57c4f5 | 118 | static unsigned long nr_timestamps; |
dc02bf71 IM |
119 | static unsigned long nr_unordered_timestamps; |
120 | static unsigned long nr_state_machine_bugs; | |
c8a37751 | 121 | static unsigned long nr_context_switch_bugs; |
dc02bf71 IM |
122 | static unsigned long nr_events; |
123 | static unsigned long nr_lost_chunks; | |
124 | static unsigned long nr_lost_events; | |
b1ffe8f3 IM |
125 | |
126 | #define TASK_STATE_TO_CHAR_STR "RSDTtZX" | |
127 | ||
128 | enum thread_state { | |
129 | THREAD_SLEEPING = 0, | |
130 | THREAD_WAIT_CPU, | |
131 | THREAD_SCHED_IN, | |
132 | THREAD_IGNORE | |
133 | }; | |
134 | ||
135 | struct work_atom { | |
136 | struct list_head list; | |
137 | enum thread_state state; | |
aa1ab9d2 | 138 | u64 sched_out_time; |
b1ffe8f3 IM |
139 | u64 wake_up_time; |
140 | u64 sched_in_time; | |
141 | u64 runtime; | |
142 | }; | |
143 | ||
39aeb52f | 144 | struct work_atoms { |
145 | struct list_head work_list; | |
b1ffe8f3 IM |
146 | struct thread *thread; |
147 | struct rb_node node; | |
148 | u64 max_lat; | |
149 | u64 total_lat; | |
150 | u64 nb_atoms; | |
151 | u64 total_runtime; | |
152 | }; | |
153 | ||
39aeb52f | 154 | typedef int (*sort_fn_t)(struct work_atoms *, struct work_atoms *); |
b1ffe8f3 IM |
155 | |
156 | static struct rb_root atom_root, sorted_atom_root; | |
157 | ||
158 | static u64 all_runtime; | |
159 | static u64 all_count; | |
160 | ||
b1ffe8f3 IM |
161 | |
162 | static u64 get_nsecs(void) | |
ec156764 IM |
163 | { |
164 | struct timespec ts; | |
165 | ||
166 | clock_gettime(CLOCK_MONOTONIC, &ts); | |
167 | ||
168 | return ts.tv_sec * 1000000000ULL + ts.tv_nsec; | |
169 | } | |
170 | ||
b1ffe8f3 | 171 | static void burn_nsecs(u64 nsecs) |
ec156764 | 172 | { |
b1ffe8f3 | 173 | u64 T0 = get_nsecs(), T1; |
ec156764 IM |
174 | |
175 | do { | |
176 | T1 = get_nsecs(); | |
177 | } while (T1 + run_measurement_overhead < T0 + nsecs); | |
178 | } | |
179 | ||
b1ffe8f3 | 180 | static void sleep_nsecs(u64 nsecs) |
ec156764 IM |
181 | { |
182 | struct timespec ts; | |
183 | ||
184 | ts.tv_nsec = nsecs % 999999999; | |
185 | ts.tv_sec = nsecs / 999999999; | |
186 | ||
187 | nanosleep(&ts, NULL); | |
188 | } | |
189 | ||
190 | static void calibrate_run_measurement_overhead(void) | |
191 | { | |
b1ffe8f3 | 192 | u64 T0, T1, delta, min_delta = 1000000000ULL; |
ec156764 IM |
193 | int i; |
194 | ||
195 | for (i = 0; i < 10; i++) { | |
196 | T0 = get_nsecs(); | |
197 | burn_nsecs(0); | |
198 | T1 = get_nsecs(); | |
199 | delta = T1-T0; | |
200 | min_delta = min(min_delta, delta); | |
201 | } | |
202 | run_measurement_overhead = min_delta; | |
203 | ||
ad236fd2 | 204 | printf("run measurement overhead: %Ld nsecs\n", min_delta); |
ec156764 IM |
205 | } |
206 | ||
207 | static void calibrate_sleep_measurement_overhead(void) | |
208 | { | |
b1ffe8f3 | 209 | u64 T0, T1, delta, min_delta = 1000000000ULL; |
ec156764 IM |
210 | int i; |
211 | ||
212 | for (i = 0; i < 10; i++) { | |
213 | T0 = get_nsecs(); | |
214 | sleep_nsecs(10000); | |
215 | T1 = get_nsecs(); | |
216 | delta = T1-T0; | |
217 | min_delta = min(min_delta, delta); | |
218 | } | |
219 | min_delta -= 10000; | |
220 | sleep_measurement_overhead = min_delta; | |
221 | ||
ad236fd2 | 222 | printf("sleep measurement overhead: %Ld nsecs\n", min_delta); |
ec156764 IM |
223 | } |
224 | ||
39aeb52f | 225 | static struct sched_atom * |
b1ffe8f3 | 226 | get_new_event(struct task_desc *task, u64 timestamp) |
ec156764 | 227 | { |
39aeb52f | 228 | struct sched_atom *event = calloc(1, sizeof(*event)); |
ec156764 IM |
229 | unsigned long idx = task->nr_events; |
230 | size_t size; | |
231 | ||
232 | event->timestamp = timestamp; | |
233 | event->nr = idx; | |
234 | ||
235 | task->nr_events++; | |
39aeb52f | 236 | size = sizeof(struct sched_atom *) * task->nr_events; |
237 | task->atoms = realloc(task->atoms, size); | |
238 | BUG_ON(!task->atoms); | |
ec156764 | 239 | |
39aeb52f | 240 | task->atoms[idx] = event; |
ec156764 IM |
241 | |
242 | return event; | |
243 | } | |
244 | ||
39aeb52f | 245 | static struct sched_atom *last_event(struct task_desc *task) |
ec156764 IM |
246 | { |
247 | if (!task->nr_events) | |
248 | return NULL; | |
249 | ||
39aeb52f | 250 | return task->atoms[task->nr_events - 1]; |
ec156764 IM |
251 | } |
252 | ||
253 | static void | |
b1ffe8f3 | 254 | add_sched_event_run(struct task_desc *task, u64 timestamp, u64 duration) |
ec156764 | 255 | { |
39aeb52f | 256 | struct sched_atom *event, *curr_event = last_event(task); |
ec156764 IM |
257 | |
258 | /* | |
fbf94829 IM |
259 | * optimize an existing RUN event by merging this one |
260 | * to it: | |
261 | */ | |
ec156764 IM |
262 | if (curr_event && curr_event->type == SCHED_EVENT_RUN) { |
263 | nr_run_events_optimized++; | |
264 | curr_event->duration += duration; | |
265 | return; | |
266 | } | |
267 | ||
268 | event = get_new_event(task, timestamp); | |
269 | ||
270 | event->type = SCHED_EVENT_RUN; | |
271 | event->duration = duration; | |
272 | ||
273 | nr_run_events++; | |
274 | } | |
275 | ||
ec156764 | 276 | static void |
b1ffe8f3 | 277 | add_sched_event_wakeup(struct task_desc *task, u64 timestamp, |
ec156764 IM |
278 | struct task_desc *wakee) |
279 | { | |
39aeb52f | 280 | struct sched_atom *event, *wakee_event; |
ec156764 IM |
281 | |
282 | event = get_new_event(task, timestamp); | |
283 | event->type = SCHED_EVENT_WAKEUP; | |
284 | event->wakee = wakee; | |
285 | ||
286 | wakee_event = last_event(wakee); | |
287 | if (!wakee_event || wakee_event->type != SCHED_EVENT_SLEEP) { | |
288 | targetless_wakeups++; | |
289 | return; | |
290 | } | |
291 | if (wakee_event->wait_sem) { | |
292 | multitarget_wakeups++; | |
293 | return; | |
294 | } | |
295 | ||
296 | wakee_event->wait_sem = calloc(1, sizeof(*wakee_event->wait_sem)); | |
297 | sem_init(wakee_event->wait_sem, 0, 0); | |
298 | wakee_event->specific_wait = 1; | |
299 | event->wait_sem = wakee_event->wait_sem; | |
300 | ||
301 | nr_wakeup_events++; | |
302 | } | |
303 | ||
304 | static void | |
b1ffe8f3 | 305 | add_sched_event_sleep(struct task_desc *task, u64 timestamp, |
ad236fd2 | 306 | u64 task_state __used) |
ec156764 | 307 | { |
39aeb52f | 308 | struct sched_atom *event = get_new_event(task, timestamp); |
ec156764 IM |
309 | |
310 | event->type = SCHED_EVENT_SLEEP; | |
311 | ||
312 | nr_sleep_events++; | |
313 | } | |
314 | ||
315 | static struct task_desc *register_pid(unsigned long pid, const char *comm) | |
316 | { | |
317 | struct task_desc *task; | |
318 | ||
319 | BUG_ON(pid >= MAX_PID); | |
320 | ||
321 | task = pid_to_task[pid]; | |
322 | ||
323 | if (task) | |
324 | return task; | |
325 | ||
326 | task = calloc(1, sizeof(*task)); | |
327 | task->pid = pid; | |
328 | task->nr = nr_tasks; | |
329 | strcpy(task->comm, comm); | |
330 | /* | |
331 | * every task starts in sleeping state - this gets ignored | |
332 | * if there's no wakeup pointing to this sleep state: | |
333 | */ | |
334 | add_sched_event_sleep(task, 0, 0); | |
335 | ||
336 | pid_to_task[pid] = task; | |
337 | nr_tasks++; | |
338 | tasks = realloc(tasks, nr_tasks*sizeof(struct task_task *)); | |
339 | BUG_ON(!tasks); | |
340 | tasks[task->nr] = task; | |
341 | ||
ad236fd2 IM |
342 | if (verbose) |
343 | printf("registered task #%ld, PID %ld (%s)\n", nr_tasks, pid, comm); | |
ec156764 IM |
344 | |
345 | return task; | |
346 | } | |
347 | ||
348 | ||
ec156764 IM |
349 | static void print_task_traces(void) |
350 | { | |
351 | struct task_desc *task; | |
352 | unsigned long i; | |
353 | ||
354 | for (i = 0; i < nr_tasks; i++) { | |
355 | task = tasks[i]; | |
ad236fd2 | 356 | printf("task %6ld (%20s:%10ld), nr_events: %ld\n", |
ec156764 IM |
357 | task->nr, task->comm, task->pid, task->nr_events); |
358 | } | |
359 | } | |
360 | ||
361 | static void add_cross_task_wakeups(void) | |
362 | { | |
363 | struct task_desc *task1, *task2; | |
364 | unsigned long i, j; | |
365 | ||
366 | for (i = 0; i < nr_tasks; i++) { | |
367 | task1 = tasks[i]; | |
368 | j = i + 1; | |
369 | if (j == nr_tasks) | |
370 | j = 0; | |
371 | task2 = tasks[j]; | |
372 | add_sched_event_wakeup(task1, 0, task2); | |
373 | } | |
374 | } | |
375 | ||
376 | static void | |
39aeb52f | 377 | process_sched_event(struct task_desc *this_task __used, struct sched_atom *atom) |
ec156764 IM |
378 | { |
379 | int ret = 0; | |
b1ffe8f3 | 380 | u64 now; |
ec156764 IM |
381 | long long delta; |
382 | ||
383 | now = get_nsecs(); | |
39aeb52f | 384 | delta = start_time + atom->timestamp - now; |
ec156764 | 385 | |
39aeb52f | 386 | switch (atom->type) { |
ec156764 | 387 | case SCHED_EVENT_RUN: |
39aeb52f | 388 | burn_nsecs(atom->duration); |
ec156764 IM |
389 | break; |
390 | case SCHED_EVENT_SLEEP: | |
39aeb52f | 391 | if (atom->wait_sem) |
392 | ret = sem_wait(atom->wait_sem); | |
ec156764 IM |
393 | BUG_ON(ret); |
394 | break; | |
395 | case SCHED_EVENT_WAKEUP: | |
39aeb52f | 396 | if (atom->wait_sem) |
397 | ret = sem_post(atom->wait_sem); | |
ec156764 IM |
398 | BUG_ON(ret); |
399 | break; | |
55ffb7a6 MG |
400 | case SCHED_EVENT_MIGRATION: |
401 | break; | |
ec156764 IM |
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 | { | |
d5b889f2 | 639 | struct thread *thread = threads__findnew(event->comm.tid); |
0a02ad93 | 640 | |
dc02bf71 | 641 | dump_printf("%p [%p]: perf_event_comm: %s:%d\n", |
0a02ad93 IM |
642 | (void *)(offset + head), |
643 | (void *)(long)(event->header.size), | |
644 | event->comm.comm, event->comm.pid); | |
645 | ||
646 | if (thread == NULL || | |
647 | thread__set_comm(thread, event->comm.comm)) { | |
dc02bf71 | 648 | dump_printf("problem processing perf_event_comm, skipping event.\n"); |
0a02ad93 IM |
649 | return -1; |
650 | } | |
651 | total_comm++; | |
652 | ||
653 | return 0; | |
654 | } | |
655 | ||
46538818 FW |
656 | |
657 | struct raw_event_sample { | |
658 | u32 size; | |
659 | char data[0]; | |
660 | }; | |
661 | ||
662 | #define FILL_FIELD(ptr, field, event, data) \ | |
663 | ptr.field = (typeof(ptr.field)) raw_field_value(event, #field, data) | |
664 | ||
665 | #define FILL_ARRAY(ptr, array, event, data) \ | |
666 | do { \ | |
667 | void *__array = raw_field_ptr(event, #array, data); \ | |
668 | memcpy(ptr.array, __array, sizeof(ptr.array)); \ | |
669 | } while(0) | |
670 | ||
671 | #define FILL_COMMON_FIELDS(ptr, event, data) \ | |
672 | do { \ | |
673 | FILL_FIELD(ptr, common_type, event, data); \ | |
674 | FILL_FIELD(ptr, common_flags, event, data); \ | |
675 | FILL_FIELD(ptr, common_preempt_count, event, data); \ | |
676 | FILL_FIELD(ptr, common_pid, event, data); \ | |
677 | FILL_FIELD(ptr, common_tgid, event, data); \ | |
678 | } while (0) | |
679 | ||
419ab0d6 FW |
680 | |
681 | ||
682 | struct trace_switch_event { | |
683 | u32 size; | |
684 | ||
685 | u16 common_type; | |
686 | u8 common_flags; | |
687 | u8 common_preempt_count; | |
688 | u32 common_pid; | |
689 | u32 common_tgid; | |
690 | ||
691 | char prev_comm[16]; | |
692 | u32 prev_pid; | |
693 | u32 prev_prio; | |
694 | u64 prev_state; | |
695 | char next_comm[16]; | |
696 | u32 next_pid; | |
697 | u32 next_prio; | |
698 | }; | |
699 | ||
39aeb52f | 700 | struct trace_runtime_event { |
701 | u32 size; | |
702 | ||
703 | u16 common_type; | |
704 | u8 common_flags; | |
705 | u8 common_preempt_count; | |
706 | u32 common_pid; | |
707 | u32 common_tgid; | |
708 | ||
709 | char comm[16]; | |
710 | u32 pid; | |
711 | u64 runtime; | |
712 | u64 vruntime; | |
713 | }; | |
419ab0d6 | 714 | |
fbf94829 IM |
715 | struct trace_wakeup_event { |
716 | u32 size; | |
717 | ||
718 | u16 common_type; | |
719 | u8 common_flags; | |
720 | u8 common_preempt_count; | |
721 | u32 common_pid; | |
722 | u32 common_tgid; | |
723 | ||
724 | char comm[16]; | |
725 | u32 pid; | |
726 | ||
727 | u32 prio; | |
728 | u32 success; | |
729 | u32 cpu; | |
730 | }; | |
731 | ||
419ab0d6 FW |
732 | struct trace_fork_event { |
733 | u32 size; | |
46538818 | 734 | |
419ab0d6 FW |
735 | u16 common_type; |
736 | u8 common_flags; | |
737 | u8 common_preempt_count; | |
738 | u32 common_pid; | |
739 | u32 common_tgid; | |
740 | ||
741 | char parent_comm[16]; | |
742 | u32 parent_pid; | |
743 | char child_comm[16]; | |
744 | u32 child_pid; | |
745 | }; | |
746 | ||
55ffb7a6 MG |
747 | struct trace_migrate_task_event { |
748 | u32 size; | |
749 | ||
750 | u16 common_type; | |
751 | u8 common_flags; | |
752 | u8 common_preempt_count; | |
753 | u32 common_pid; | |
754 | u32 common_tgid; | |
755 | ||
756 | char comm[16]; | |
757 | u32 pid; | |
758 | ||
759 | u32 prio; | |
760 | u32 cpu; | |
761 | }; | |
762 | ||
419ab0d6 FW |
763 | struct trace_sched_handler { |
764 | void (*switch_event)(struct trace_switch_event *, | |
765 | struct event *, | |
766 | int cpu, | |
767 | u64 timestamp, | |
768 | struct thread *thread); | |
769 | ||
39aeb52f | 770 | void (*runtime_event)(struct trace_runtime_event *, |
771 | struct event *, | |
772 | int cpu, | |
773 | u64 timestamp, | |
774 | struct thread *thread); | |
775 | ||
419ab0d6 FW |
776 | void (*wakeup_event)(struct trace_wakeup_event *, |
777 | struct event *, | |
778 | int cpu, | |
779 | u64 timestamp, | |
780 | struct thread *thread); | |
781 | ||
782 | void (*fork_event)(struct trace_fork_event *, | |
783 | struct event *, | |
784 | int cpu, | |
785 | u64 timestamp, | |
786 | struct thread *thread); | |
55ffb7a6 MG |
787 | |
788 | void (*migrate_task_event)(struct trace_migrate_task_event *, | |
789 | struct event *, | |
790 | int cpu, | |
791 | u64 timestamp, | |
792 | struct thread *thread); | |
419ab0d6 | 793 | }; |
46538818 | 794 | |
46538818 | 795 | |
419ab0d6 FW |
796 | static void |
797 | replay_wakeup_event(struct trace_wakeup_event *wakeup_event, | |
798 | struct event *event, | |
799 | int cpu __used, | |
800 | u64 timestamp __used, | |
801 | struct thread *thread __used) | |
802 | { | |
803 | struct task_desc *waker, *wakee; | |
fbf94829 | 804 | |
ad236fd2 IM |
805 | if (verbose) { |
806 | printf("sched_wakeup event %p\n", event); | |
fbf94829 | 807 | |
ad236fd2 | 808 | printf(" ... pid %d woke up %s/%d\n", |
419ab0d6 FW |
809 | wakeup_event->common_pid, |
810 | wakeup_event->comm, | |
811 | wakeup_event->pid); | |
ad236fd2 | 812 | } |
fbf94829 | 813 | |
419ab0d6 FW |
814 | waker = register_pid(wakeup_event->common_pid, "<unknown>"); |
815 | wakee = register_pid(wakeup_event->pid, wakeup_event->comm); | |
fbf94829 IM |
816 | |
817 | add_sched_event_wakeup(waker, timestamp, wakee); | |
ec156764 IM |
818 | } |
819 | ||
d1153389 | 820 | static u64 cpu_last_switched[MAX_CPUS]; |
fbf94829 IM |
821 | |
822 | static void | |
419ab0d6 FW |
823 | replay_switch_event(struct trace_switch_event *switch_event, |
824 | struct event *event, | |
825 | int cpu, | |
826 | u64 timestamp, | |
827 | struct thread *thread __used) | |
ec156764 | 828 | { |
fbf94829 IM |
829 | struct task_desc *prev, *next; |
830 | u64 timestamp0; | |
831 | s64 delta; | |
832 | ||
ad236fd2 IM |
833 | if (verbose) |
834 | printf("sched_switch event %p\n", event); | |
835 | ||
fbf94829 IM |
836 | if (cpu >= MAX_CPUS || cpu < 0) |
837 | return; | |
838 | ||
839 | timestamp0 = cpu_last_switched[cpu]; | |
840 | if (timestamp0) | |
841 | delta = timestamp - timestamp0; | |
842 | else | |
843 | delta = 0; | |
844 | ||
845 | if (delta < 0) | |
846 | die("hm, delta: %Ld < 0 ?\n", delta); | |
847 | ||
ad236fd2 IM |
848 | if (verbose) { |
849 | printf(" ... switch from %s/%d to %s/%d [ran %Ld nsecs]\n", | |
419ab0d6 FW |
850 | switch_event->prev_comm, switch_event->prev_pid, |
851 | switch_event->next_comm, switch_event->next_pid, | |
ad236fd2 IM |
852 | delta); |
853 | } | |
fbf94829 | 854 | |
419ab0d6 FW |
855 | prev = register_pid(switch_event->prev_pid, switch_event->prev_comm); |
856 | next = register_pid(switch_event->next_pid, switch_event->next_comm); | |
fbf94829 IM |
857 | |
858 | cpu_last_switched[cpu] = timestamp; | |
859 | ||
860 | add_sched_event_run(prev, timestamp, delta); | |
419ab0d6 | 861 | add_sched_event_sleep(prev, timestamp, switch_event->prev_state); |
fbf94829 IM |
862 | } |
863 | ||
fbf94829 | 864 | |
419ab0d6 FW |
865 | static void |
866 | replay_fork_event(struct trace_fork_event *fork_event, | |
867 | struct event *event, | |
868 | int cpu __used, | |
869 | u64 timestamp __used, | |
870 | struct thread *thread __used) | |
871 | { | |
872 | if (verbose) { | |
873 | printf("sched_fork event %p\n", event); | |
874 | printf("... parent: %s/%d\n", fork_event->parent_comm, fork_event->parent_pid); | |
875 | printf("... child: %s/%d\n", fork_event->child_comm, fork_event->child_pid); | |
876 | } | |
877 | register_pid(fork_event->parent_pid, fork_event->parent_comm); | |
878 | register_pid(fork_event->child_pid, fork_event->child_comm); | |
879 | } | |
fbf94829 | 880 | |
419ab0d6 | 881 | static struct trace_sched_handler replay_ops = { |
ea92ed5a IM |
882 | .wakeup_event = replay_wakeup_event, |
883 | .switch_event = replay_switch_event, | |
884 | .fork_event = replay_fork_event, | |
fbf94829 IM |
885 | }; |
886 | ||
b1ffe8f3 IM |
887 | struct sort_dimension { |
888 | const char *name; | |
b5fae128 | 889 | sort_fn_t cmp; |
b1ffe8f3 IM |
890 | struct list_head list; |
891 | }; | |
892 | ||
893 | static LIST_HEAD(cmp_pid); | |
894 | ||
daa1d7a5 | 895 | static int |
39aeb52f | 896 | thread_lat_cmp(struct list_head *list, struct work_atoms *l, struct work_atoms *r) |
daa1d7a5 FW |
897 | { |
898 | struct sort_dimension *sort; | |
899 | int ret = 0; | |
900 | ||
b5fae128 IM |
901 | BUG_ON(list_empty(list)); |
902 | ||
daa1d7a5 FW |
903 | list_for_each_entry(sort, list, list) { |
904 | ret = sort->cmp(l, r); | |
905 | if (ret) | |
906 | return ret; | |
907 | } | |
908 | ||
909 | return ret; | |
910 | } | |
911 | ||
39aeb52f | 912 | static struct work_atoms * |
b5fae128 IM |
913 | thread_atoms_search(struct rb_root *root, struct thread *thread, |
914 | struct list_head *sort_list) | |
915 | { | |
916 | struct rb_node *node = root->rb_node; | |
39aeb52f | 917 | struct work_atoms key = { .thread = thread }; |
b5fae128 IM |
918 | |
919 | while (node) { | |
39aeb52f | 920 | struct work_atoms *atoms; |
b5fae128 IM |
921 | int cmp; |
922 | ||
39aeb52f | 923 | atoms = container_of(node, struct work_atoms, node); |
b5fae128 IM |
924 | |
925 | cmp = thread_lat_cmp(sort_list, &key, atoms); | |
926 | if (cmp > 0) | |
927 | node = node->rb_left; | |
928 | else if (cmp < 0) | |
929 | node = node->rb_right; | |
930 | else { | |
931 | BUG_ON(thread != atoms->thread); | |
932 | return atoms; | |
933 | } | |
934 | } | |
935 | return NULL; | |
936 | } | |
937 | ||
cdce9d73 | 938 | static void |
39aeb52f | 939 | __thread_latency_insert(struct rb_root *root, struct work_atoms *data, |
daa1d7a5 | 940 | struct list_head *sort_list) |
cdce9d73 FW |
941 | { |
942 | struct rb_node **new = &(root->rb_node), *parent = NULL; | |
943 | ||
944 | while (*new) { | |
39aeb52f | 945 | struct work_atoms *this; |
daa1d7a5 | 946 | int cmp; |
cdce9d73 | 947 | |
39aeb52f | 948 | this = container_of(*new, struct work_atoms, node); |
cdce9d73 | 949 | parent = *new; |
daa1d7a5 FW |
950 | |
951 | cmp = thread_lat_cmp(sort_list, data, this); | |
952 | ||
953 | if (cmp > 0) | |
cdce9d73 | 954 | new = &((*new)->rb_left); |
cdce9d73 | 955 | else |
daa1d7a5 | 956 | new = &((*new)->rb_right); |
cdce9d73 FW |
957 | } |
958 | ||
959 | rb_link_node(&data->node, parent, new); | |
960 | rb_insert_color(&data->node, root); | |
961 | } | |
962 | ||
b1ffe8f3 | 963 | static void thread_atoms_insert(struct thread *thread) |
cdce9d73 | 964 | { |
39aeb52f | 965 | struct work_atoms *atoms; |
b1ffe8f3 | 966 | |
17562205 FW |
967 | atoms = calloc(sizeof(*atoms), 1); |
968 | if (!atoms) | |
cdce9d73 FW |
969 | die("No memory"); |
970 | ||
17562205 | 971 | atoms->thread = thread; |
39aeb52f | 972 | INIT_LIST_HEAD(&atoms->work_list); |
b1ffe8f3 | 973 | __thread_latency_insert(&atom_root, atoms, &cmp_pid); |
cdce9d73 FW |
974 | } |
975 | ||
976 | static void | |
977 | latency_fork_event(struct trace_fork_event *fork_event __used, | |
978 | struct event *event __used, | |
979 | int cpu __used, | |
980 | u64 timestamp __used, | |
981 | struct thread *thread __used) | |
982 | { | |
983 | /* should insert the newcomer */ | |
984 | } | |
985 | ||
ea92ed5a | 986 | __used |
cdce9d73 FW |
987 | static char sched_out_state(struct trace_switch_event *switch_event) |
988 | { | |
989 | const char *str = TASK_STATE_TO_CHAR_STR; | |
990 | ||
991 | return str[switch_event->prev_state]; | |
992 | } | |
993 | ||
994 | static void | |
39aeb52f | 995 | add_sched_out_event(struct work_atoms *atoms, |
996 | char run_state, | |
997 | u64 timestamp) | |
cdce9d73 | 998 | { |
b1ffe8f3 | 999 | struct work_atom *atom; |
cdce9d73 | 1000 | |
b1ffe8f3 IM |
1001 | atom = calloc(sizeof(*atom), 1); |
1002 | if (!atom) | |
cdce9d73 FW |
1003 | die("Non memory"); |
1004 | ||
aa1ab9d2 FW |
1005 | atom->sched_out_time = timestamp; |
1006 | ||
39aeb52f | 1007 | if (run_state == 'R') { |
b1ffe8f3 | 1008 | atom->state = THREAD_WAIT_CPU; |
aa1ab9d2 | 1009 | atom->wake_up_time = atom->sched_out_time; |
c6ced611 FW |
1010 | } |
1011 | ||
39aeb52f | 1012 | list_add_tail(&atom->list, &atoms->work_list); |
cdce9d73 FW |
1013 | } |
1014 | ||
1015 | static void | |
39aeb52f | 1016 | add_runtime_event(struct work_atoms *atoms, u64 delta, u64 timestamp __used) |
1017 | { | |
1018 | struct work_atom *atom; | |
1019 | ||
1020 | BUG_ON(list_empty(&atoms->work_list)); | |
1021 | ||
1022 | atom = list_entry(atoms->work_list.prev, struct work_atom, list); | |
1023 | ||
1024 | atom->runtime += delta; | |
1025 | atoms->total_runtime += delta; | |
1026 | } | |
1027 | ||
1028 | static void | |
1029 | add_sched_in_event(struct work_atoms *atoms, u64 timestamp) | |
cdce9d73 | 1030 | { |
b1ffe8f3 | 1031 | struct work_atom *atom; |
66685678 | 1032 | u64 delta; |
cdce9d73 | 1033 | |
39aeb52f | 1034 | if (list_empty(&atoms->work_list)) |
cdce9d73 FW |
1035 | return; |
1036 | ||
39aeb52f | 1037 | atom = list_entry(atoms->work_list.prev, struct work_atom, list); |
cdce9d73 | 1038 | |
b1ffe8f3 | 1039 | if (atom->state != THREAD_WAIT_CPU) |
cdce9d73 FW |
1040 | return; |
1041 | ||
b1ffe8f3 IM |
1042 | if (timestamp < atom->wake_up_time) { |
1043 | atom->state = THREAD_IGNORE; | |
cdce9d73 FW |
1044 | return; |
1045 | } | |
1046 | ||
b1ffe8f3 IM |
1047 | atom->state = THREAD_SCHED_IN; |
1048 | atom->sched_in_time = timestamp; | |
66685678 | 1049 | |
b1ffe8f3 | 1050 | delta = atom->sched_in_time - atom->wake_up_time; |
66685678 FW |
1051 | atoms->total_lat += delta; |
1052 | if (delta > atoms->max_lat) | |
1053 | atoms->max_lat = delta; | |
1054 | atoms->nb_atoms++; | |
cdce9d73 FW |
1055 | } |
1056 | ||
cdce9d73 FW |
1057 | static void |
1058 | latency_switch_event(struct trace_switch_event *switch_event, | |
1059 | struct event *event __used, | |
ea92ed5a | 1060 | int cpu, |
cdce9d73 FW |
1061 | u64 timestamp, |
1062 | struct thread *thread __used) | |
1063 | { | |
39aeb52f | 1064 | struct work_atoms *out_events, *in_events; |
cdce9d73 | 1065 | struct thread *sched_out, *sched_in; |
ea92ed5a IM |
1066 | u64 timestamp0; |
1067 | s64 delta; | |
1068 | ||
39aeb52f | 1069 | BUG_ON(cpu >= MAX_CPUS || cpu < 0); |
ea92ed5a IM |
1070 | |
1071 | timestamp0 = cpu_last_switched[cpu]; | |
1072 | cpu_last_switched[cpu] = timestamp; | |
1073 | if (timestamp0) | |
1074 | delta = timestamp - timestamp0; | |
1075 | else | |
1076 | delta = 0; | |
1077 | ||
1078 | if (delta < 0) | |
1079 | die("hm, delta: %Ld < 0 ?\n", delta); | |
1080 | ||
cdce9d73 | 1081 | |
d5b889f2 ACM |
1082 | sched_out = threads__findnew(switch_event->prev_pid); |
1083 | sched_in = threads__findnew(switch_event->next_pid); | |
cdce9d73 | 1084 | |
39aeb52f | 1085 | out_events = thread_atoms_search(&atom_root, sched_out, &cmp_pid); |
1086 | if (!out_events) { | |
1087 | thread_atoms_insert(sched_out); | |
1088 | out_events = thread_atoms_search(&atom_root, sched_out, &cmp_pid); | |
1089 | if (!out_events) | |
1090 | die("out-event: Internal tree error"); | |
1091 | } | |
1092 | add_sched_out_event(out_events, sched_out_state(switch_event), timestamp); | |
1093 | ||
1094 | in_events = thread_atoms_search(&atom_root, sched_in, &cmp_pid); | |
1095 | if (!in_events) { | |
b1ffe8f3 | 1096 | thread_atoms_insert(sched_in); |
39aeb52f | 1097 | in_events = thread_atoms_search(&atom_root, sched_in, &cmp_pid); |
1098 | if (!in_events) | |
1099 | die("in-event: Internal tree error"); | |
1100 | /* | |
1101 | * Take came in we have not heard about yet, | |
1102 | * add in an initial atom in runnable state: | |
1103 | */ | |
1104 | add_sched_out_event(in_events, 'R', timestamp); | |
cdce9d73 | 1105 | } |
39aeb52f | 1106 | add_sched_in_event(in_events, timestamp); |
1107 | } | |
cdce9d73 | 1108 | |
39aeb52f | 1109 | static void |
1110 | latency_runtime_event(struct trace_runtime_event *runtime_event, | |
1111 | struct event *event __used, | |
1112 | int cpu, | |
1113 | u64 timestamp, | |
1114 | struct thread *this_thread __used) | |
1115 | { | |
d5b889f2 ACM |
1116 | struct thread *thread = threads__findnew(runtime_event->pid); |
1117 | struct work_atoms *atoms = thread_atoms_search(&atom_root, thread, &cmp_pid); | |
39aeb52f | 1118 | |
1119 | BUG_ON(cpu >= MAX_CPUS || cpu < 0); | |
39aeb52f | 1120 | if (!atoms) { |
1121 | thread_atoms_insert(thread); | |
1122 | atoms = thread_atoms_search(&atom_root, thread, &cmp_pid); | |
1123 | if (!atoms) | |
1124 | die("in-event: Internal tree error"); | |
1125 | add_sched_out_event(atoms, 'R', timestamp); | |
cdce9d73 FW |
1126 | } |
1127 | ||
39aeb52f | 1128 | add_runtime_event(atoms, runtime_event->runtime, timestamp); |
cdce9d73 FW |
1129 | } |
1130 | ||
1131 | static void | |
1132 | latency_wakeup_event(struct trace_wakeup_event *wakeup_event, | |
39aeb52f | 1133 | struct event *__event __used, |
cdce9d73 FW |
1134 | int cpu __used, |
1135 | u64 timestamp, | |
1136 | struct thread *thread __used) | |
1137 | { | |
39aeb52f | 1138 | struct work_atoms *atoms; |
b1ffe8f3 | 1139 | struct work_atom *atom; |
cdce9d73 FW |
1140 | struct thread *wakee; |
1141 | ||
1142 | /* Note for later, it may be interesting to observe the failing cases */ | |
1143 | if (!wakeup_event->success) | |
1144 | return; | |
1145 | ||
d5b889f2 | 1146 | wakee = threads__findnew(wakeup_event->pid); |
b5fae128 | 1147 | atoms = thread_atoms_search(&atom_root, wakee, &cmp_pid); |
17562205 | 1148 | if (!atoms) { |
b1ffe8f3 | 1149 | thread_atoms_insert(wakee); |
39aeb52f | 1150 | atoms = thread_atoms_search(&atom_root, wakee, &cmp_pid); |
1151 | if (!atoms) | |
1152 | die("wakeup-event: Internal tree error"); | |
1153 | add_sched_out_event(atoms, 'S', timestamp); | |
cdce9d73 FW |
1154 | } |
1155 | ||
39aeb52f | 1156 | BUG_ON(list_empty(&atoms->work_list)); |
cdce9d73 | 1157 | |
39aeb52f | 1158 | atom = list_entry(atoms->work_list.prev, struct work_atom, list); |
cdce9d73 | 1159 | |
55ffb7a6 MG |
1160 | /* |
1161 | * You WILL be missing events if you've recorded only | |
1162 | * one CPU, or are only looking at only one, so don't | |
1163 | * make useless noise. | |
1164 | */ | |
1165 | if (profile_cpu == -1 && atom->state != THREAD_SLEEPING) | |
dc02bf71 | 1166 | nr_state_machine_bugs++; |
cdce9d73 | 1167 | |
ea57c4f5 IM |
1168 | nr_timestamps++; |
1169 | if (atom->sched_out_time > timestamp) { | |
dc02bf71 | 1170 | nr_unordered_timestamps++; |
aa1ab9d2 | 1171 | return; |
ea57c4f5 | 1172 | } |
aa1ab9d2 | 1173 | |
b1ffe8f3 IM |
1174 | atom->state = THREAD_WAIT_CPU; |
1175 | atom->wake_up_time = timestamp; | |
cdce9d73 FW |
1176 | } |
1177 | ||
55ffb7a6 MG |
1178 | static void |
1179 | latency_migrate_task_event(struct trace_migrate_task_event *migrate_task_event, | |
1180 | struct event *__event __used, | |
1181 | int cpu __used, | |
1182 | u64 timestamp, | |
1183 | struct thread *thread __used) | |
1184 | { | |
1185 | struct work_atoms *atoms; | |
1186 | struct work_atom *atom; | |
1187 | struct thread *migrant; | |
1188 | ||
1189 | /* | |
1190 | * Only need to worry about migration when profiling one CPU. | |
1191 | */ | |
1192 | if (profile_cpu == -1) | |
1193 | return; | |
1194 | ||
d5b889f2 | 1195 | migrant = threads__findnew(migrate_task_event->pid); |
55ffb7a6 MG |
1196 | atoms = thread_atoms_search(&atom_root, migrant, &cmp_pid); |
1197 | if (!atoms) { | |
1198 | thread_atoms_insert(migrant); | |
1199 | register_pid(migrant->pid, migrant->comm); | |
1200 | atoms = thread_atoms_search(&atom_root, migrant, &cmp_pid); | |
1201 | if (!atoms) | |
1202 | die("migration-event: Internal tree error"); | |
1203 | add_sched_out_event(atoms, 'R', timestamp); | |
1204 | } | |
1205 | ||
1206 | BUG_ON(list_empty(&atoms->work_list)); | |
1207 | ||
1208 | atom = list_entry(atoms->work_list.prev, struct work_atom, list); | |
1209 | atom->sched_in_time = atom->sched_out_time = atom->wake_up_time = timestamp; | |
1210 | ||
1211 | nr_timestamps++; | |
1212 | ||
1213 | if (atom->sched_out_time > timestamp) | |
1214 | nr_unordered_timestamps++; | |
1215 | } | |
1216 | ||
cdce9d73 | 1217 | static struct trace_sched_handler lat_ops = { |
ea92ed5a IM |
1218 | .wakeup_event = latency_wakeup_event, |
1219 | .switch_event = latency_switch_event, | |
39aeb52f | 1220 | .runtime_event = latency_runtime_event, |
ea92ed5a | 1221 | .fork_event = latency_fork_event, |
55ffb7a6 | 1222 | .migrate_task_event = latency_migrate_task_event, |
cdce9d73 FW |
1223 | }; |
1224 | ||
39aeb52f | 1225 | static void output_lat_thread(struct work_atoms *work_list) |
cdce9d73 | 1226 | { |
cdce9d73 FW |
1227 | int i; |
1228 | int ret; | |
66685678 | 1229 | u64 avg; |
cdce9d73 | 1230 | |
39aeb52f | 1231 | if (!work_list->nb_atoms) |
cdce9d73 | 1232 | return; |
ea57c4f5 IM |
1233 | /* |
1234 | * Ignore idle threads: | |
1235 | */ | |
80ed0987 | 1236 | if (!strcmp(work_list->thread->comm, "swapper")) |
ea57c4f5 | 1237 | return; |
cdce9d73 | 1238 | |
39aeb52f | 1239 | all_runtime += work_list->total_runtime; |
1240 | all_count += work_list->nb_atoms; | |
66685678 | 1241 | |
80ed0987 | 1242 | ret = printf(" %s:%d ", work_list->thread->comm, work_list->thread->pid); |
cdce9d73 | 1243 | |
08f69e6c | 1244 | for (i = 0; i < 24 - ret; i++) |
cdce9d73 FW |
1245 | printf(" "); |
1246 | ||
39aeb52f | 1247 | avg = work_list->total_lat / work_list->nb_atoms; |
cdce9d73 | 1248 | |
dc02bf71 | 1249 | printf("|%11.3f ms |%9llu | avg:%9.3f ms | max:%9.3f ms |\n", |
39aeb52f | 1250 | (double)work_list->total_runtime / 1e6, |
1251 | work_list->nb_atoms, (double)avg / 1e6, | |
1252 | (double)work_list->max_lat / 1e6); | |
cdce9d73 FW |
1253 | } |
1254 | ||
39aeb52f | 1255 | static int pid_cmp(struct work_atoms *l, struct work_atoms *r) |
daa1d7a5 | 1256 | { |
daa1d7a5 FW |
1257 | if (l->thread->pid < r->thread->pid) |
1258 | return -1; | |
1259 | if (l->thread->pid > r->thread->pid) | |
1260 | return 1; | |
1261 | ||
1262 | return 0; | |
1263 | } | |
1264 | ||
1265 | static struct sort_dimension pid_sort_dimension = { | |
b5fae128 IM |
1266 | .name = "pid", |
1267 | .cmp = pid_cmp, | |
daa1d7a5 FW |
1268 | }; |
1269 | ||
39aeb52f | 1270 | static int avg_cmp(struct work_atoms *l, struct work_atoms *r) |
daa1d7a5 FW |
1271 | { |
1272 | u64 avgl, avgr; | |
1273 | ||
1274 | if (!l->nb_atoms) | |
1275 | return -1; | |
1276 | ||
1277 | if (!r->nb_atoms) | |
1278 | return 1; | |
1279 | ||
1280 | avgl = l->total_lat / l->nb_atoms; | |
1281 | avgr = r->total_lat / r->nb_atoms; | |
1282 | ||
1283 | if (avgl < avgr) | |
1284 | return -1; | |
1285 | if (avgl > avgr) | |
1286 | return 1; | |
1287 | ||
1288 | return 0; | |
1289 | } | |
1290 | ||
1291 | static struct sort_dimension avg_sort_dimension = { | |
b5fae128 IM |
1292 | .name = "avg", |
1293 | .cmp = avg_cmp, | |
daa1d7a5 FW |
1294 | }; |
1295 | ||
39aeb52f | 1296 | static int max_cmp(struct work_atoms *l, struct work_atoms *r) |
daa1d7a5 FW |
1297 | { |
1298 | if (l->max_lat < r->max_lat) | |
1299 | return -1; | |
1300 | if (l->max_lat > r->max_lat) | |
1301 | return 1; | |
1302 | ||
1303 | return 0; | |
1304 | } | |
1305 | ||
1306 | static struct sort_dimension max_sort_dimension = { | |
b5fae128 IM |
1307 | .name = "max", |
1308 | .cmp = max_cmp, | |
daa1d7a5 FW |
1309 | }; |
1310 | ||
39aeb52f | 1311 | static int switch_cmp(struct work_atoms *l, struct work_atoms *r) |
daa1d7a5 FW |
1312 | { |
1313 | if (l->nb_atoms < r->nb_atoms) | |
1314 | return -1; | |
1315 | if (l->nb_atoms > r->nb_atoms) | |
1316 | return 1; | |
1317 | ||
1318 | return 0; | |
1319 | } | |
1320 | ||
1321 | static struct sort_dimension switch_sort_dimension = { | |
b5fae128 IM |
1322 | .name = "switch", |
1323 | .cmp = switch_cmp, | |
daa1d7a5 FW |
1324 | }; |
1325 | ||
39aeb52f | 1326 | static int runtime_cmp(struct work_atoms *l, struct work_atoms *r) |
daa1d7a5 FW |
1327 | { |
1328 | if (l->total_runtime < r->total_runtime) | |
1329 | return -1; | |
1330 | if (l->total_runtime > r->total_runtime) | |
1331 | return 1; | |
1332 | ||
1333 | return 0; | |
1334 | } | |
1335 | ||
1336 | static struct sort_dimension runtime_sort_dimension = { | |
b5fae128 IM |
1337 | .name = "runtime", |
1338 | .cmp = runtime_cmp, | |
daa1d7a5 FW |
1339 | }; |
1340 | ||
1341 | static struct sort_dimension *available_sorts[] = { | |
1342 | &pid_sort_dimension, | |
1343 | &avg_sort_dimension, | |
1344 | &max_sort_dimension, | |
1345 | &switch_sort_dimension, | |
1346 | &runtime_sort_dimension, | |
1347 | }; | |
1348 | ||
1349 | #define NB_AVAILABLE_SORTS (int)(sizeof(available_sorts) / sizeof(struct sort_dimension *)) | |
1350 | ||
1351 | static LIST_HEAD(sort_list); | |
1352 | ||
cbef79a8 | 1353 | static int sort_dimension__add(const char *tok, struct list_head *list) |
daa1d7a5 FW |
1354 | { |
1355 | int i; | |
1356 | ||
1357 | for (i = 0; i < NB_AVAILABLE_SORTS; i++) { | |
1358 | if (!strcmp(available_sorts[i]->name, tok)) { | |
1359 | list_add_tail(&available_sorts[i]->list, list); | |
1360 | ||
1361 | return 0; | |
1362 | } | |
1363 | } | |
1364 | ||
1365 | return -1; | |
1366 | } | |
1367 | ||
1368 | static void setup_sorting(void); | |
1369 | ||
1370 | static void sort_lat(void) | |
1371 | { | |
1372 | struct rb_node *node; | |
1373 | ||
1374 | for (;;) { | |
39aeb52f | 1375 | struct work_atoms *data; |
b1ffe8f3 | 1376 | node = rb_first(&atom_root); |
daa1d7a5 FW |
1377 | if (!node) |
1378 | break; | |
1379 | ||
b1ffe8f3 | 1380 | rb_erase(node, &atom_root); |
39aeb52f | 1381 | data = rb_entry(node, struct work_atoms, node); |
b1ffe8f3 | 1382 | __thread_latency_insert(&sorted_atom_root, data, &sort_list); |
daa1d7a5 FW |
1383 | } |
1384 | } | |
1385 | ||
419ab0d6 FW |
1386 | static struct trace_sched_handler *trace_handler; |
1387 | ||
fbf94829 | 1388 | static void |
419ab0d6 FW |
1389 | process_sched_wakeup_event(struct raw_event_sample *raw, |
1390 | struct event *event, | |
1391 | int cpu __used, | |
1392 | u64 timestamp __used, | |
1393 | struct thread *thread __used) | |
1394 | { | |
1395 | struct trace_wakeup_event wakeup_event; | |
1396 | ||
1397 | FILL_COMMON_FIELDS(wakeup_event, event, raw->data); | |
1398 | ||
1399 | FILL_ARRAY(wakeup_event, comm, event, raw->data); | |
1400 | FILL_FIELD(wakeup_event, pid, event, raw->data); | |
1401 | FILL_FIELD(wakeup_event, prio, event, raw->data); | |
1402 | FILL_FIELD(wakeup_event, success, event, raw->data); | |
1403 | FILL_FIELD(wakeup_event, cpu, event, raw->data); | |
1404 | ||
0ec04e16 IM |
1405 | if (trace_handler->wakeup_event) |
1406 | trace_handler->wakeup_event(&wakeup_event, event, cpu, timestamp, thread); | |
419ab0d6 FW |
1407 | } |
1408 | ||
c8a37751 IM |
1409 | /* |
1410 | * Track the current task - that way we can know whether there's any | |
1411 | * weird events, such as a task being switched away that is not current. | |
1412 | */ | |
40749d0f | 1413 | static int max_cpu; |
0ec04e16 | 1414 | |
c8a37751 IM |
1415 | static u32 curr_pid[MAX_CPUS] = { [0 ... MAX_CPUS-1] = -1 }; |
1416 | ||
0ec04e16 IM |
1417 | static struct thread *curr_thread[MAX_CPUS]; |
1418 | ||
1419 | static char next_shortname1 = 'A'; | |
1420 | static char next_shortname2 = '0'; | |
1421 | ||
1422 | static void | |
1423 | map_switch_event(struct trace_switch_event *switch_event, | |
1424 | struct event *event __used, | |
1425 | int this_cpu, | |
1426 | u64 timestamp, | |
1427 | struct thread *thread __used) | |
1428 | { | |
1429 | struct thread *sched_out, *sched_in; | |
1430 | int new_shortname; | |
1431 | u64 timestamp0; | |
1432 | s64 delta; | |
1433 | int cpu; | |
1434 | ||
1435 | BUG_ON(this_cpu >= MAX_CPUS || this_cpu < 0); | |
1436 | ||
1437 | if (this_cpu > max_cpu) | |
1438 | max_cpu = this_cpu; | |
1439 | ||
1440 | timestamp0 = cpu_last_switched[this_cpu]; | |
1441 | cpu_last_switched[this_cpu] = timestamp; | |
1442 | if (timestamp0) | |
1443 | delta = timestamp - timestamp0; | |
1444 | else | |
1445 | delta = 0; | |
1446 | ||
1447 | if (delta < 0) | |
1448 | die("hm, delta: %Ld < 0 ?\n", delta); | |
1449 | ||
1450 | ||
d5b889f2 ACM |
1451 | sched_out = threads__findnew(switch_event->prev_pid); |
1452 | sched_in = threads__findnew(switch_event->next_pid); | |
0ec04e16 IM |
1453 | |
1454 | curr_thread[this_cpu] = sched_in; | |
1455 | ||
1456 | printf(" "); | |
1457 | ||
1458 | new_shortname = 0; | |
1459 | if (!sched_in->shortname[0]) { | |
1460 | sched_in->shortname[0] = next_shortname1; | |
1461 | sched_in->shortname[1] = next_shortname2; | |
1462 | ||
1463 | if (next_shortname1 < 'Z') { | |
1464 | next_shortname1++; | |
1465 | } else { | |
1466 | next_shortname1='A'; | |
1467 | if (next_shortname2 < '9') { | |
1468 | next_shortname2++; | |
1469 | } else { | |
1470 | next_shortname2='0'; | |
1471 | } | |
1472 | } | |
1473 | new_shortname = 1; | |
1474 | } | |
1475 | ||
1476 | for (cpu = 0; cpu <= max_cpu; cpu++) { | |
1477 | if (cpu != this_cpu) | |
1478 | printf(" "); | |
1479 | else | |
1480 | printf("*"); | |
1481 | ||
1482 | if (curr_thread[cpu]) { | |
1483 | if (curr_thread[cpu]->pid) | |
1484 | printf("%2s ", curr_thread[cpu]->shortname); | |
1485 | else | |
1486 | printf(". "); | |
1487 | } else | |
1488 | printf(" "); | |
1489 | } | |
1490 | ||
1491 | printf(" %12.6f secs ", (double)timestamp/1e9); | |
1492 | if (new_shortname) { | |
1493 | printf("%s => %s:%d\n", | |
1494 | sched_in->shortname, sched_in->comm, sched_in->pid); | |
1495 | } else { | |
1496 | printf("\n"); | |
1497 | } | |
1498 | } | |
1499 | ||
1500 | ||
419ab0d6 FW |
1501 | static void |
1502 | process_sched_switch_event(struct raw_event_sample *raw, | |
1503 | struct event *event, | |
0ec04e16 | 1504 | int this_cpu, |
419ab0d6 FW |
1505 | u64 timestamp __used, |
1506 | struct thread *thread __used) | |
1507 | { | |
1508 | struct trace_switch_event switch_event; | |
1509 | ||
1510 | FILL_COMMON_FIELDS(switch_event, event, raw->data); | |
1511 | ||
1512 | FILL_ARRAY(switch_event, prev_comm, event, raw->data); | |
1513 | FILL_FIELD(switch_event, prev_pid, event, raw->data); | |
1514 | FILL_FIELD(switch_event, prev_prio, event, raw->data); | |
1515 | FILL_FIELD(switch_event, prev_state, event, raw->data); | |
1516 | FILL_ARRAY(switch_event, next_comm, event, raw->data); | |
1517 | FILL_FIELD(switch_event, next_pid, event, raw->data); | |
1518 | FILL_FIELD(switch_event, next_prio, event, raw->data); | |
1519 | ||
0ec04e16 | 1520 | if (curr_pid[this_cpu] != (u32)-1) { |
c8a37751 IM |
1521 | /* |
1522 | * Are we trying to switch away a PID that is | |
1523 | * not current? | |
1524 | */ | |
0ec04e16 | 1525 | if (curr_pid[this_cpu] != switch_event.prev_pid) |
c8a37751 IM |
1526 | nr_context_switch_bugs++; |
1527 | } | |
0ec04e16 IM |
1528 | if (trace_handler->switch_event) |
1529 | trace_handler->switch_event(&switch_event, event, this_cpu, timestamp, thread); | |
c8a37751 | 1530 | |
0ec04e16 | 1531 | curr_pid[this_cpu] = switch_event.next_pid; |
419ab0d6 FW |
1532 | } |
1533 | ||
39aeb52f | 1534 | static void |
1535 | process_sched_runtime_event(struct raw_event_sample *raw, | |
1536 | struct event *event, | |
1537 | int cpu __used, | |
1538 | u64 timestamp __used, | |
1539 | struct thread *thread __used) | |
1540 | { | |
1541 | struct trace_runtime_event runtime_event; | |
1542 | ||
1543 | FILL_ARRAY(runtime_event, comm, event, raw->data); | |
1544 | FILL_FIELD(runtime_event, pid, event, raw->data); | |
1545 | FILL_FIELD(runtime_event, runtime, event, raw->data); | |
1546 | FILL_FIELD(runtime_event, vruntime, event, raw->data); | |
1547 | ||
0ec04e16 IM |
1548 | if (trace_handler->runtime_event) |
1549 | trace_handler->runtime_event(&runtime_event, event, cpu, timestamp, thread); | |
39aeb52f | 1550 | } |
1551 | ||
419ab0d6 FW |
1552 | static void |
1553 | process_sched_fork_event(struct raw_event_sample *raw, | |
1554 | struct event *event, | |
1555 | int cpu __used, | |
1556 | u64 timestamp __used, | |
1557 | struct thread *thread __used) | |
fbf94829 | 1558 | { |
46538818 FW |
1559 | struct trace_fork_event fork_event; |
1560 | ||
1561 | FILL_COMMON_FIELDS(fork_event, event, raw->data); | |
1562 | ||
1563 | FILL_ARRAY(fork_event, parent_comm, event, raw->data); | |
1564 | FILL_FIELD(fork_event, parent_pid, event, raw->data); | |
1565 | FILL_ARRAY(fork_event, child_comm, event, raw->data); | |
1566 | FILL_FIELD(fork_event, child_pid, event, raw->data); | |
1567 | ||
0ec04e16 IM |
1568 | if (trace_handler->fork_event) |
1569 | trace_handler->fork_event(&fork_event, event, cpu, timestamp, thread); | |
fbf94829 IM |
1570 | } |
1571 | ||
419ab0d6 FW |
1572 | static void |
1573 | process_sched_exit_event(struct event *event, | |
1574 | int cpu __used, | |
1575 | u64 timestamp __used, | |
1576 | struct thread *thread __used) | |
fbf94829 | 1577 | { |
ad236fd2 IM |
1578 | if (verbose) |
1579 | printf("sched_exit event %p\n", event); | |
ec156764 IM |
1580 | } |
1581 | ||
55ffb7a6 MG |
1582 | static void |
1583 | process_sched_migrate_task_event(struct raw_event_sample *raw, | |
1584 | struct event *event, | |
1585 | int cpu __used, | |
1586 | u64 timestamp __used, | |
1587 | struct thread *thread __used) | |
1588 | { | |
1589 | struct trace_migrate_task_event migrate_task_event; | |
1590 | ||
1591 | FILL_COMMON_FIELDS(migrate_task_event, event, raw->data); | |
1592 | ||
1593 | FILL_ARRAY(migrate_task_event, comm, event, raw->data); | |
1594 | FILL_FIELD(migrate_task_event, pid, event, raw->data); | |
1595 | FILL_FIELD(migrate_task_event, prio, event, raw->data); | |
1596 | FILL_FIELD(migrate_task_event, cpu, event, raw->data); | |
1597 | ||
1598 | if (trace_handler->migrate_task_event) | |
1599 | trace_handler->migrate_task_event(&migrate_task_event, event, cpu, timestamp, thread); | |
1600 | } | |
1601 | ||
ec156764 | 1602 | static void |
ad236fd2 | 1603 | process_raw_event(event_t *raw_event __used, void *more_data, |
ec156764 IM |
1604 | int cpu, u64 timestamp, struct thread *thread) |
1605 | { | |
46538818 | 1606 | struct raw_event_sample *raw = more_data; |
ec156764 IM |
1607 | struct event *event; |
1608 | int type; | |
1609 | ||
1610 | type = trace_parse_common_type(raw->data); | |
1611 | event = trace_find_event(type); | |
1612 | ||
ec156764 | 1613 | if (!strcmp(event->name, "sched_switch")) |
46538818 | 1614 | process_sched_switch_event(raw, event, cpu, timestamp, thread); |
39aeb52f | 1615 | if (!strcmp(event->name, "sched_stat_runtime")) |
1616 | process_sched_runtime_event(raw, event, cpu, timestamp, thread); | |
ec156764 | 1617 | if (!strcmp(event->name, "sched_wakeup")) |
46538818 | 1618 | process_sched_wakeup_event(raw, event, cpu, timestamp, thread); |
fbf94829 | 1619 | if (!strcmp(event->name, "sched_wakeup_new")) |
46538818 | 1620 | process_sched_wakeup_event(raw, event, cpu, timestamp, thread); |
fbf94829 | 1621 | if (!strcmp(event->name, "sched_process_fork")) |
46538818 | 1622 | process_sched_fork_event(raw, event, cpu, timestamp, thread); |
fbf94829 IM |
1623 | if (!strcmp(event->name, "sched_process_exit")) |
1624 | process_sched_exit_event(event, cpu, timestamp, thread); | |
55ffb7a6 MG |
1625 | if (!strcmp(event->name, "sched_migrate_task")) |
1626 | process_sched_migrate_task_event(raw, event, cpu, timestamp, thread); | |
ec156764 IM |
1627 | } |
1628 | ||
0a02ad93 IM |
1629 | static int |
1630 | process_sample_event(event_t *event, unsigned long offset, unsigned long head) | |
1631 | { | |
0a02ad93 IM |
1632 | struct thread *thread; |
1633 | u64 ip = event->ip.ip; | |
1634 | u64 timestamp = -1; | |
1635 | u32 cpu = -1; | |
1636 | u64 period = 1; | |
1637 | void *more_data = event->ip.__more_data; | |
a80deb62 ACM |
1638 | |
1639 | if (!(sample_type & PERF_SAMPLE_RAW)) | |
1640 | return 0; | |
0a02ad93 | 1641 | |
d5b889f2 | 1642 | thread = threads__findnew(event->ip.pid); |
0a02ad93 IM |
1643 | |
1644 | if (sample_type & PERF_SAMPLE_TIME) { | |
1645 | timestamp = *(u64 *)more_data; | |
1646 | more_data += sizeof(u64); | |
1647 | } | |
1648 | ||
1649 | if (sample_type & PERF_SAMPLE_CPU) { | |
1650 | cpu = *(u32 *)more_data; | |
1651 | more_data += sizeof(u32); | |
1652 | more_data += sizeof(u32); /* reserved */ | |
1653 | } | |
1654 | ||
1655 | if (sample_type & PERF_SAMPLE_PERIOD) { | |
1656 | period = *(u64 *)more_data; | |
1657 | more_data += sizeof(u64); | |
1658 | } | |
1659 | ||
cdd6c482 | 1660 | dump_printf("%p [%p]: PERF_RECORD_SAMPLE (IP, %d): %d/%d: %p period: %Ld\n", |
0a02ad93 IM |
1661 | (void *)(offset + head), |
1662 | (void *)(long)(event->header.size), | |
1663 | event->header.misc, | |
1664 | event->ip.pid, event->ip.tid, | |
1665 | (void *)(long)ip, | |
1666 | (long long)period); | |
1667 | ||
0a02ad93 | 1668 | if (thread == NULL) { |
6beba7ad ACM |
1669 | pr_debug("problem processing %d event, skipping it.\n", |
1670 | event->header.type); | |
0a02ad93 IM |
1671 | return -1; |
1672 | } | |
1673 | ||
f39cdf25 JL |
1674 | dump_printf(" ... thread: %s:%d\n", thread->comm, thread->pid); |
1675 | ||
55ffb7a6 MG |
1676 | if (profile_cpu != -1 && profile_cpu != (int) cpu) |
1677 | return 0; | |
1678 | ||
a80deb62 | 1679 | process_raw_event(event, more_data, cpu, timestamp, thread); |
0a02ad93 IM |
1680 | |
1681 | return 0; | |
1682 | } | |
1683 | ||
1684 | static int | |
016e92fb FW |
1685 | process_lost_event(event_t *event __used, |
1686 | unsigned long offset __used, | |
1687 | unsigned long head __used) | |
0a02ad93 | 1688 | { |
016e92fb FW |
1689 | nr_lost_chunks++; |
1690 | nr_lost_events += event->lost.lost; | |
0a02ad93 | 1691 | |
016e92fb FW |
1692 | return 0; |
1693 | } | |
0a02ad93 | 1694 | |
016e92fb FW |
1695 | static int sample_type_check(u64 type) |
1696 | { | |
1697 | sample_type = type; | |
0a02ad93 | 1698 | |
016e92fb FW |
1699 | if (!(sample_type & PERF_SAMPLE_RAW)) { |
1700 | fprintf(stderr, | |
1701 | "No trace sample to read. Did you call perf record " | |
1702 | "without -R?"); | |
0a02ad93 IM |
1703 | return -1; |
1704 | } | |
1705 | ||
1706 | return 0; | |
1707 | } | |
1708 | ||
016e92fb FW |
1709 | static struct perf_file_handler file_handler = { |
1710 | .process_sample_event = process_sample_event, | |
1711 | .process_comm_event = process_comm_event, | |
1712 | .process_lost_event = process_lost_event, | |
1713 | .sample_type_check = sample_type_check, | |
1714 | }; | |
1715 | ||
46f392c9 | 1716 | static int read_events(void) |
0a02ad93 | 1717 | { |
d5b889f2 | 1718 | register_idle_thread(); |
016e92fb | 1719 | register_perf_file_handler(&file_handler); |
0a02ad93 | 1720 | |
b32d133a | 1721 | return mmap_dispatch_perf_file(&header, input_name, 0, 0, |
cc612d81 | 1722 | &cwdlen, &cwd); |
0a02ad93 IM |
1723 | } |
1724 | ||
0ec04e16 IM |
1725 | static void print_bad_events(void) |
1726 | { | |
1727 | if (nr_unordered_timestamps && nr_timestamps) { | |
1728 | printf(" INFO: %.3f%% unordered timestamps (%ld out of %ld)\n", | |
1729 | (double)nr_unordered_timestamps/(double)nr_timestamps*100.0, | |
1730 | nr_unordered_timestamps, nr_timestamps); | |
1731 | } | |
1732 | if (nr_lost_events && nr_events) { | |
1733 | printf(" INFO: %.3f%% lost events (%ld out of %ld, in %ld chunks)\n", | |
1734 | (double)nr_lost_events/(double)nr_events*100.0, | |
1735 | nr_lost_events, nr_events, nr_lost_chunks); | |
1736 | } | |
1737 | if (nr_state_machine_bugs && nr_timestamps) { | |
1738 | printf(" INFO: %.3f%% state machine bugs (%ld out of %ld)", | |
1739 | (double)nr_state_machine_bugs/(double)nr_timestamps*100.0, | |
1740 | nr_state_machine_bugs, nr_timestamps); | |
1741 | if (nr_lost_events) | |
1742 | printf(" (due to lost events?)"); | |
1743 | printf("\n"); | |
1744 | } | |
1745 | if (nr_context_switch_bugs && nr_timestamps) { | |
1746 | printf(" INFO: %.3f%% context switch bugs (%ld out of %ld)", | |
1747 | (double)nr_context_switch_bugs/(double)nr_timestamps*100.0, | |
1748 | nr_context_switch_bugs, nr_timestamps); | |
1749 | if (nr_lost_events) | |
1750 | printf(" (due to lost events?)"); | |
1751 | printf("\n"); | |
1752 | } | |
1753 | } | |
1754 | ||
1755 | static void __cmd_lat(void) | |
1756 | { | |
1757 | struct rb_node *next; | |
1758 | ||
1759 | setup_pager(); | |
1760 | read_events(); | |
1761 | sort_lat(); | |
1762 | ||
1763 | printf("\n -----------------------------------------------------------------------------------------\n"); | |
1764 | printf(" Task | Runtime ms | Switches | Average delay ms | Maximum delay ms |\n"); | |
1765 | printf(" -----------------------------------------------------------------------------------------\n"); | |
1766 | ||
1767 | next = rb_first(&sorted_atom_root); | |
1768 | ||
1769 | while (next) { | |
1770 | struct work_atoms *work_list; | |
1771 | ||
1772 | work_list = rb_entry(next, struct work_atoms, node); | |
1773 | output_lat_thread(work_list); | |
1774 | next = rb_next(next); | |
1775 | } | |
1776 | ||
1777 | printf(" -----------------------------------------------------------------------------------------\n"); | |
1778 | printf(" TOTAL: |%11.3f ms |%9Ld |\n", | |
1779 | (double)all_runtime/1e6, all_count); | |
1780 | ||
1781 | printf(" ---------------------------------------------------\n"); | |
1782 | ||
1783 | print_bad_events(); | |
1784 | printf("\n"); | |
1785 | ||
1786 | } | |
1787 | ||
1788 | static struct trace_sched_handler map_ops = { | |
1789 | .wakeup_event = NULL, | |
1790 | .switch_event = map_switch_event, | |
1791 | .runtime_event = NULL, | |
1792 | .fork_event = NULL, | |
1793 | }; | |
1794 | ||
1795 | static void __cmd_map(void) | |
1796 | { | |
40749d0f IM |
1797 | max_cpu = sysconf(_SC_NPROCESSORS_CONF); |
1798 | ||
0ec04e16 IM |
1799 | setup_pager(); |
1800 | read_events(); | |
1801 | print_bad_events(); | |
1802 | } | |
1803 | ||
1804 | static void __cmd_replay(void) | |
1805 | { | |
1806 | unsigned long i; | |
1807 | ||
1808 | calibrate_run_measurement_overhead(); | |
1809 | calibrate_sleep_measurement_overhead(); | |
1810 | ||
1811 | test_calibrations(); | |
1812 | ||
1813 | read_events(); | |
1814 | ||
1815 | printf("nr_run_events: %ld\n", nr_run_events); | |
1816 | printf("nr_sleep_events: %ld\n", nr_sleep_events); | |
1817 | printf("nr_wakeup_events: %ld\n", nr_wakeup_events); | |
1818 | ||
1819 | if (targetless_wakeups) | |
1820 | printf("target-less wakeups: %ld\n", targetless_wakeups); | |
1821 | if (multitarget_wakeups) | |
1822 | printf("multi-target wakeups: %ld\n", multitarget_wakeups); | |
1823 | if (nr_run_events_optimized) | |
1824 | printf("run atoms optimized: %ld\n", | |
1825 | nr_run_events_optimized); | |
1826 | ||
1827 | print_task_traces(); | |
1828 | add_cross_task_wakeups(); | |
1829 | ||
1830 | create_tasks(); | |
1831 | printf("------------------------------------------------------------\n"); | |
1832 | for (i = 0; i < replay_repeat; i++) | |
1833 | run_one_test(); | |
1834 | } | |
1835 | ||
1836 | ||
46f392c9 | 1837 | static const char * const sched_usage[] = { |
4b77a729 | 1838 | "perf sched [<options>] {record|latency|map|replay|trace}", |
0a02ad93 IM |
1839 | NULL |
1840 | }; | |
1841 | ||
f2858d8a | 1842 | static const struct option sched_options[] = { |
4b77a729 MG |
1843 | OPT_STRING('i', "input", &input_name, "file", |
1844 | "input file name"), | |
f2858d8a IM |
1845 | OPT_BOOLEAN('v', "verbose", &verbose, |
1846 | "be more verbose (show symbol address, etc)"), | |
0a02ad93 IM |
1847 | OPT_BOOLEAN('D', "dump-raw-trace", &dump_trace, |
1848 | "dump raw trace in ASCII"), | |
f2858d8a IM |
1849 | OPT_END() |
1850 | }; | |
1851 | ||
1852 | static const char * const latency_usage[] = { | |
1853 | "perf sched latency [<options>]", | |
1854 | NULL | |
1855 | }; | |
1856 | ||
1857 | static const struct option latency_options[] = { | |
daa1d7a5 FW |
1858 | OPT_STRING('s', "sort", &sort_order, "key[,key2...]", |
1859 | "sort by key(s): runtime, switch, avg, max"), | |
0a02ad93 IM |
1860 | OPT_BOOLEAN('v', "verbose", &verbose, |
1861 | "be more verbose (show symbol address, etc)"), | |
55ffb7a6 MG |
1862 | OPT_INTEGER('C', "CPU", &profile_cpu, |
1863 | "CPU to profile on"), | |
f2858d8a IM |
1864 | OPT_BOOLEAN('D', "dump-raw-trace", &dump_trace, |
1865 | "dump raw trace in ASCII"), | |
1866 | OPT_END() | |
1867 | }; | |
1868 | ||
1869 | static const char * const replay_usage[] = { | |
1870 | "perf sched replay [<options>]", | |
1871 | NULL | |
1872 | }; | |
1873 | ||
1874 | static const struct option replay_options[] = { | |
1875 | OPT_INTEGER('r', "repeat", &replay_repeat, | |
1876 | "repeat the workload replay N times (-1: infinite)"), | |
1877 | OPT_BOOLEAN('v', "verbose", &verbose, | |
1878 | "be more verbose (show symbol address, etc)"), | |
1879 | OPT_BOOLEAN('D', "dump-raw-trace", &dump_trace, | |
1880 | "dump raw trace in ASCII"), | |
0a02ad93 IM |
1881 | OPT_END() |
1882 | }; | |
1883 | ||
daa1d7a5 FW |
1884 | static void setup_sorting(void) |
1885 | { | |
1886 | char *tmp, *tok, *str = strdup(sort_order); | |
1887 | ||
1888 | for (tok = strtok_r(str, ", ", &tmp); | |
1889 | tok; tok = strtok_r(NULL, ", ", &tmp)) { | |
1890 | if (sort_dimension__add(tok, &sort_list) < 0) { | |
1891 | error("Unknown --sort key: `%s'", tok); | |
f2858d8a | 1892 | usage_with_options(latency_usage, latency_options); |
daa1d7a5 FW |
1893 | } |
1894 | } | |
1895 | ||
1896 | free(str); | |
1897 | ||
cbef79a8 | 1898 | sort_dimension__add("pid", &cmp_pid); |
daa1d7a5 FW |
1899 | } |
1900 | ||
1fc35b29 IM |
1901 | static const char *record_args[] = { |
1902 | "record", | |
1903 | "-a", | |
1904 | "-R", | |
d1302522 | 1905 | "-M", |
ea57c4f5 | 1906 | "-f", |
dc02bf71 | 1907 | "-m", "1024", |
1fc35b29 IM |
1908 | "-c", "1", |
1909 | "-e", "sched:sched_switch:r", | |
1910 | "-e", "sched:sched_stat_wait:r", | |
1911 | "-e", "sched:sched_stat_sleep:r", | |
1912 | "-e", "sched:sched_stat_iowait:r", | |
ea57c4f5 | 1913 | "-e", "sched:sched_stat_runtime:r", |
1fc35b29 IM |
1914 | "-e", "sched:sched_process_exit:r", |
1915 | "-e", "sched:sched_process_fork:r", | |
1916 | "-e", "sched:sched_wakeup:r", | |
1917 | "-e", "sched:sched_migrate_task:r", | |
1918 | }; | |
1919 | ||
1920 | static int __cmd_record(int argc, const char **argv) | |
1921 | { | |
1922 | unsigned int rec_argc, i, j; | |
1923 | const char **rec_argv; | |
1924 | ||
1925 | rec_argc = ARRAY_SIZE(record_args) + argc - 1; | |
1926 | rec_argv = calloc(rec_argc + 1, sizeof(char *)); | |
1927 | ||
1928 | for (i = 0; i < ARRAY_SIZE(record_args); i++) | |
1929 | rec_argv[i] = strdup(record_args[i]); | |
1930 | ||
1931 | for (j = 1; j < (unsigned int)argc; j++, i++) | |
1932 | rec_argv[i] = argv[j]; | |
1933 | ||
1934 | BUG_ON(i != rec_argc); | |
1935 | ||
1936 | return cmd_record(i, rec_argv, NULL); | |
1937 | } | |
1938 | ||
0a02ad93 IM |
1939 | int cmd_sched(int argc, const char **argv, const char *prefix __used) |
1940 | { | |
00a192b3 | 1941 | symbol__init(0); |
0a02ad93 | 1942 | |
f2858d8a IM |
1943 | argc = parse_options(argc, argv, sched_options, sched_usage, |
1944 | PARSE_OPT_STOP_AT_NON_OPTION); | |
1945 | if (!argc) | |
1946 | usage_with_options(sched_usage, sched_options); | |
0a02ad93 | 1947 | |
1fc35b29 IM |
1948 | if (!strncmp(argv[0], "rec", 3)) { |
1949 | return __cmd_record(argc, argv); | |
1950 | } else if (!strncmp(argv[0], "lat", 3)) { | |
cdce9d73 | 1951 | trace_handler = &lat_ops; |
f2858d8a IM |
1952 | if (argc > 1) { |
1953 | argc = parse_options(argc, argv, latency_options, latency_usage, 0); | |
1954 | if (argc) | |
1955 | usage_with_options(latency_usage, latency_options); | |
f2858d8a | 1956 | } |
b5fae128 | 1957 | setup_sorting(); |
46f392c9 | 1958 | __cmd_lat(); |
0ec04e16 IM |
1959 | } else if (!strcmp(argv[0], "map")) { |
1960 | trace_handler = &map_ops; | |
1961 | setup_sorting(); | |
1962 | __cmd_map(); | |
f2858d8a IM |
1963 | } else if (!strncmp(argv[0], "rep", 3)) { |
1964 | trace_handler = &replay_ops; | |
1965 | if (argc) { | |
1966 | argc = parse_options(argc, argv, replay_options, replay_usage, 0); | |
1967 | if (argc) | |
1968 | usage_with_options(replay_usage, replay_options); | |
1969 | } | |
1970 | __cmd_replay(); | |
c13f0d3c IM |
1971 | } else if (!strcmp(argv[0], "trace")) { |
1972 | /* | |
1973 | * Aliased to 'perf trace' for now: | |
1974 | */ | |
1975 | return cmd_trace(argc, argv, prefix); | |
f2858d8a IM |
1976 | } else { |
1977 | usage_with_options(sched_usage, sched_options); | |
1978 | } | |
1979 | ||
ec156764 | 1980 | return 0; |
0a02ad93 | 1981 | } |