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" | |
94c744b6 | 9 | #include "util/session.h" |
0a02ad93 IM |
10 | |
11 | #include "util/parse-options.h" | |
b1ffe8f3 | 12 | #include "util/trace-event.h" |
0a02ad93 | 13 | |
0a02ad93 IM |
14 | #include "util/debug.h" |
15 | ||
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 | 22 | static char const *input_name = "perf.data"; |
0a02ad93 | 23 | |
daa1d7a5 | 24 | static char default_sort_order[] = "avg, max, switch, runtime"; |
edb7c60e | 25 | static const char *sort_order = default_sort_order; |
daa1d7a5 | 26 | |
55ffb7a6 MG |
27 | static int profile_cpu = -1; |
28 | ||
b1ffe8f3 IM |
29 | #define PR_SET_NAME 15 /* Set process name */ |
30 | #define MAX_CPUS 4096 | |
0a02ad93 | 31 | |
b1ffe8f3 IM |
32 | static u64 run_measurement_overhead; |
33 | static u64 sleep_measurement_overhead; | |
ec156764 | 34 | |
b1ffe8f3 IM |
35 | #define COMM_LEN 20 |
36 | #define SYM_LEN 129 | |
ec156764 | 37 | |
b1ffe8f3 | 38 | #define MAX_PID 65536 |
ec156764 | 39 | |
b1ffe8f3 | 40 | static unsigned long nr_tasks; |
ec156764 | 41 | |
39aeb52f | 42 | struct sched_atom; |
ec156764 | 43 | |
b1ffe8f3 IM |
44 | struct task_desc { |
45 | unsigned long nr; | |
46 | unsigned long pid; | |
47 | char comm[COMM_LEN]; | |
ec156764 | 48 | |
b1ffe8f3 IM |
49 | unsigned long nr_events; |
50 | unsigned long curr_event; | |
39aeb52f | 51 | struct sched_atom **atoms; |
b1ffe8f3 IM |
52 | |
53 | pthread_t thread; | |
54 | sem_t sleep_sem; | |
ec156764 | 55 | |
b1ffe8f3 IM |
56 | sem_t ready_for_work; |
57 | sem_t work_done_sem; | |
58 | ||
59 | u64 cpu_usage; | |
60 | }; | |
61 | ||
62 | enum sched_event_type { | |
63 | SCHED_EVENT_RUN, | |
64 | SCHED_EVENT_SLEEP, | |
65 | SCHED_EVENT_WAKEUP, | |
55ffb7a6 | 66 | SCHED_EVENT_MIGRATION, |
b1ffe8f3 IM |
67 | }; |
68 | ||
39aeb52f | 69 | struct sched_atom { |
b1ffe8f3 | 70 | enum sched_event_type type; |
eed05fe7 | 71 | int specific_wait; |
b1ffe8f3 IM |
72 | u64 timestamp; |
73 | u64 duration; | |
74 | unsigned long nr; | |
b1ffe8f3 IM |
75 | sem_t *wait_sem; |
76 | struct task_desc *wakee; | |
77 | }; | |
78 | ||
79 | static struct task_desc *pid_to_task[MAX_PID]; | |
80 | ||
81 | static struct task_desc **tasks; | |
82 | ||
83 | static pthread_mutex_t start_work_mutex = PTHREAD_MUTEX_INITIALIZER; | |
84 | static u64 start_time; | |
85 | ||
86 | static pthread_mutex_t work_done_wait_mutex = PTHREAD_MUTEX_INITIALIZER; | |
ec156764 | 87 | |
b1ffe8f3 IM |
88 | static unsigned long nr_run_events; |
89 | static unsigned long nr_sleep_events; | |
90 | static unsigned long nr_wakeup_events; | |
91 | ||
92 | static unsigned long nr_sleep_corrections; | |
93 | static unsigned long nr_run_events_optimized; | |
94 | ||
95 | static unsigned long targetless_wakeups; | |
96 | static unsigned long multitarget_wakeups; | |
97 | ||
98 | static u64 cpu_usage; | |
99 | static u64 runavg_cpu_usage; | |
100 | static u64 parent_cpu_usage; | |
101 | static u64 runavg_parent_cpu_usage; | |
102 | ||
103 | static unsigned long nr_runs; | |
104 | static u64 sum_runtime; | |
105 | static u64 sum_fluct; | |
106 | static u64 run_avg; | |
107 | ||
1967936d | 108 | static unsigned int replay_repeat = 10; |
ea57c4f5 | 109 | static unsigned long nr_timestamps; |
dc02bf71 IM |
110 | static unsigned long nr_unordered_timestamps; |
111 | static unsigned long nr_state_machine_bugs; | |
c8a37751 | 112 | static unsigned long nr_context_switch_bugs; |
dc02bf71 IM |
113 | static unsigned long nr_events; |
114 | static unsigned long nr_lost_chunks; | |
115 | static unsigned long nr_lost_events; | |
b1ffe8f3 IM |
116 | |
117 | #define TASK_STATE_TO_CHAR_STR "RSDTtZX" | |
118 | ||
119 | enum thread_state { | |
120 | THREAD_SLEEPING = 0, | |
121 | THREAD_WAIT_CPU, | |
122 | THREAD_SCHED_IN, | |
123 | THREAD_IGNORE | |
124 | }; | |
125 | ||
126 | struct work_atom { | |
127 | struct list_head list; | |
128 | enum thread_state state; | |
aa1ab9d2 | 129 | u64 sched_out_time; |
b1ffe8f3 IM |
130 | u64 wake_up_time; |
131 | u64 sched_in_time; | |
132 | u64 runtime; | |
133 | }; | |
134 | ||
39aeb52f | 135 | struct work_atoms { |
136 | struct list_head work_list; | |
b1ffe8f3 IM |
137 | struct thread *thread; |
138 | struct rb_node node; | |
139 | u64 max_lat; | |
3786310a | 140 | u64 max_lat_at; |
b1ffe8f3 IM |
141 | u64 total_lat; |
142 | u64 nb_atoms; | |
143 | u64 total_runtime; | |
144 | }; | |
145 | ||
39aeb52f | 146 | typedef int (*sort_fn_t)(struct work_atoms *, struct work_atoms *); |
b1ffe8f3 IM |
147 | |
148 | static struct rb_root atom_root, sorted_atom_root; | |
149 | ||
150 | static u64 all_runtime; | |
151 | static u64 all_count; | |
152 | ||
b1ffe8f3 IM |
153 | |
154 | static u64 get_nsecs(void) | |
ec156764 IM |
155 | { |
156 | struct timespec ts; | |
157 | ||
158 | clock_gettime(CLOCK_MONOTONIC, &ts); | |
159 | ||
160 | return ts.tv_sec * 1000000000ULL + ts.tv_nsec; | |
161 | } | |
162 | ||
b1ffe8f3 | 163 | static void burn_nsecs(u64 nsecs) |
ec156764 | 164 | { |
b1ffe8f3 | 165 | u64 T0 = get_nsecs(), T1; |
ec156764 IM |
166 | |
167 | do { | |
168 | T1 = get_nsecs(); | |
169 | } while (T1 + run_measurement_overhead < T0 + nsecs); | |
170 | } | |
171 | ||
b1ffe8f3 | 172 | static void sleep_nsecs(u64 nsecs) |
ec156764 IM |
173 | { |
174 | struct timespec ts; | |
175 | ||
176 | ts.tv_nsec = nsecs % 999999999; | |
177 | ts.tv_sec = nsecs / 999999999; | |
178 | ||
179 | nanosleep(&ts, NULL); | |
180 | } | |
181 | ||
182 | static void calibrate_run_measurement_overhead(void) | |
183 | { | |
b1ffe8f3 | 184 | u64 T0, T1, delta, min_delta = 1000000000ULL; |
ec156764 IM |
185 | int i; |
186 | ||
187 | for (i = 0; i < 10; i++) { | |
188 | T0 = get_nsecs(); | |
189 | burn_nsecs(0); | |
190 | T1 = get_nsecs(); | |
191 | delta = T1-T0; | |
192 | min_delta = min(min_delta, delta); | |
193 | } | |
194 | run_measurement_overhead = min_delta; | |
195 | ||
9486aa38 | 196 | printf("run measurement overhead: %" PRIu64 " nsecs\n", min_delta); |
ec156764 IM |
197 | } |
198 | ||
199 | static void calibrate_sleep_measurement_overhead(void) | |
200 | { | |
b1ffe8f3 | 201 | u64 T0, T1, delta, min_delta = 1000000000ULL; |
ec156764 IM |
202 | int i; |
203 | ||
204 | for (i = 0; i < 10; i++) { | |
205 | T0 = get_nsecs(); | |
206 | sleep_nsecs(10000); | |
207 | T1 = get_nsecs(); | |
208 | delta = T1-T0; | |
209 | min_delta = min(min_delta, delta); | |
210 | } | |
211 | min_delta -= 10000; | |
212 | sleep_measurement_overhead = min_delta; | |
213 | ||
9486aa38 | 214 | printf("sleep measurement overhead: %" PRIu64 " nsecs\n", min_delta); |
ec156764 IM |
215 | } |
216 | ||
39aeb52f | 217 | static struct sched_atom * |
b1ffe8f3 | 218 | get_new_event(struct task_desc *task, u64 timestamp) |
ec156764 | 219 | { |
36479484 | 220 | struct sched_atom *event = zalloc(sizeof(*event)); |
ec156764 IM |
221 | unsigned long idx = task->nr_events; |
222 | size_t size; | |
223 | ||
224 | event->timestamp = timestamp; | |
225 | event->nr = idx; | |
226 | ||
227 | task->nr_events++; | |
39aeb52f | 228 | size = sizeof(struct sched_atom *) * task->nr_events; |
229 | task->atoms = realloc(task->atoms, size); | |
230 | BUG_ON(!task->atoms); | |
ec156764 | 231 | |
39aeb52f | 232 | task->atoms[idx] = event; |
ec156764 IM |
233 | |
234 | return event; | |
235 | } | |
236 | ||
39aeb52f | 237 | static struct sched_atom *last_event(struct task_desc *task) |
ec156764 IM |
238 | { |
239 | if (!task->nr_events) | |
240 | return NULL; | |
241 | ||
39aeb52f | 242 | return task->atoms[task->nr_events - 1]; |
ec156764 IM |
243 | } |
244 | ||
245 | static void | |
b1ffe8f3 | 246 | add_sched_event_run(struct task_desc *task, u64 timestamp, u64 duration) |
ec156764 | 247 | { |
39aeb52f | 248 | struct sched_atom *event, *curr_event = last_event(task); |
ec156764 IM |
249 | |
250 | /* | |
fbf94829 IM |
251 | * optimize an existing RUN event by merging this one |
252 | * to it: | |
253 | */ | |
ec156764 IM |
254 | if (curr_event && curr_event->type == SCHED_EVENT_RUN) { |
255 | nr_run_events_optimized++; | |
256 | curr_event->duration += duration; | |
257 | return; | |
258 | } | |
259 | ||
260 | event = get_new_event(task, timestamp); | |
261 | ||
262 | event->type = SCHED_EVENT_RUN; | |
263 | event->duration = duration; | |
264 | ||
265 | nr_run_events++; | |
266 | } | |
267 | ||
ec156764 | 268 | static void |
b1ffe8f3 | 269 | add_sched_event_wakeup(struct task_desc *task, u64 timestamp, |
ec156764 IM |
270 | struct task_desc *wakee) |
271 | { | |
39aeb52f | 272 | struct sched_atom *event, *wakee_event; |
ec156764 IM |
273 | |
274 | event = get_new_event(task, timestamp); | |
275 | event->type = SCHED_EVENT_WAKEUP; | |
276 | event->wakee = wakee; | |
277 | ||
278 | wakee_event = last_event(wakee); | |
279 | if (!wakee_event || wakee_event->type != SCHED_EVENT_SLEEP) { | |
280 | targetless_wakeups++; | |
281 | return; | |
282 | } | |
283 | if (wakee_event->wait_sem) { | |
284 | multitarget_wakeups++; | |
285 | return; | |
286 | } | |
287 | ||
36479484 | 288 | wakee_event->wait_sem = zalloc(sizeof(*wakee_event->wait_sem)); |
ec156764 IM |
289 | sem_init(wakee_event->wait_sem, 0, 0); |
290 | wakee_event->specific_wait = 1; | |
291 | event->wait_sem = wakee_event->wait_sem; | |
292 | ||
293 | nr_wakeup_events++; | |
294 | } | |
295 | ||
296 | static void | |
b1ffe8f3 | 297 | add_sched_event_sleep(struct task_desc *task, u64 timestamp, |
ad236fd2 | 298 | u64 task_state __used) |
ec156764 | 299 | { |
39aeb52f | 300 | struct sched_atom *event = get_new_event(task, timestamp); |
ec156764 IM |
301 | |
302 | event->type = SCHED_EVENT_SLEEP; | |
303 | ||
304 | nr_sleep_events++; | |
305 | } | |
306 | ||
307 | static struct task_desc *register_pid(unsigned long pid, const char *comm) | |
308 | { | |
309 | struct task_desc *task; | |
310 | ||
311 | BUG_ON(pid >= MAX_PID); | |
312 | ||
313 | task = pid_to_task[pid]; | |
314 | ||
315 | if (task) | |
316 | return task; | |
317 | ||
36479484 | 318 | task = zalloc(sizeof(*task)); |
ec156764 IM |
319 | task->pid = pid; |
320 | task->nr = nr_tasks; | |
321 | strcpy(task->comm, comm); | |
322 | /* | |
323 | * every task starts in sleeping state - this gets ignored | |
324 | * if there's no wakeup pointing to this sleep state: | |
325 | */ | |
326 | add_sched_event_sleep(task, 0, 0); | |
327 | ||
328 | pid_to_task[pid] = task; | |
329 | nr_tasks++; | |
330 | tasks = realloc(tasks, nr_tasks*sizeof(struct task_task *)); | |
331 | BUG_ON(!tasks); | |
332 | tasks[task->nr] = task; | |
333 | ||
ad236fd2 IM |
334 | if (verbose) |
335 | printf("registered task #%ld, PID %ld (%s)\n", nr_tasks, pid, comm); | |
ec156764 IM |
336 | |
337 | return task; | |
338 | } | |
339 | ||
340 | ||
ec156764 IM |
341 | static void print_task_traces(void) |
342 | { | |
343 | struct task_desc *task; | |
344 | unsigned long i; | |
345 | ||
346 | for (i = 0; i < nr_tasks; i++) { | |
347 | task = tasks[i]; | |
ad236fd2 | 348 | printf("task %6ld (%20s:%10ld), nr_events: %ld\n", |
ec156764 IM |
349 | task->nr, task->comm, task->pid, task->nr_events); |
350 | } | |
351 | } | |
352 | ||
353 | static void add_cross_task_wakeups(void) | |
354 | { | |
355 | struct task_desc *task1, *task2; | |
356 | unsigned long i, j; | |
357 | ||
358 | for (i = 0; i < nr_tasks; i++) { | |
359 | task1 = tasks[i]; | |
360 | j = i + 1; | |
361 | if (j == nr_tasks) | |
362 | j = 0; | |
363 | task2 = tasks[j]; | |
364 | add_sched_event_wakeup(task1, 0, task2); | |
365 | } | |
366 | } | |
367 | ||
368 | static void | |
39aeb52f | 369 | process_sched_event(struct task_desc *this_task __used, struct sched_atom *atom) |
ec156764 IM |
370 | { |
371 | int ret = 0; | |
b1ffe8f3 | 372 | u64 now; |
ec156764 IM |
373 | long long delta; |
374 | ||
375 | now = get_nsecs(); | |
39aeb52f | 376 | delta = start_time + atom->timestamp - now; |
ec156764 | 377 | |
39aeb52f | 378 | switch (atom->type) { |
ec156764 | 379 | case SCHED_EVENT_RUN: |
39aeb52f | 380 | burn_nsecs(atom->duration); |
ec156764 IM |
381 | break; |
382 | case SCHED_EVENT_SLEEP: | |
39aeb52f | 383 | if (atom->wait_sem) |
384 | ret = sem_wait(atom->wait_sem); | |
ec156764 IM |
385 | BUG_ON(ret); |
386 | break; | |
387 | case SCHED_EVENT_WAKEUP: | |
39aeb52f | 388 | if (atom->wait_sem) |
389 | ret = sem_post(atom->wait_sem); | |
ec156764 IM |
390 | BUG_ON(ret); |
391 | break; | |
55ffb7a6 MG |
392 | case SCHED_EVENT_MIGRATION: |
393 | break; | |
ec156764 IM |
394 | default: |
395 | BUG_ON(1); | |
396 | } | |
397 | } | |
398 | ||
b1ffe8f3 | 399 | static u64 get_cpu_usage_nsec_parent(void) |
ec156764 IM |
400 | { |
401 | struct rusage ru; | |
b1ffe8f3 | 402 | u64 sum; |
ec156764 IM |
403 | int err; |
404 | ||
405 | err = getrusage(RUSAGE_SELF, &ru); | |
406 | BUG_ON(err); | |
407 | ||
408 | sum = ru.ru_utime.tv_sec*1e9 + ru.ru_utime.tv_usec*1e3; | |
409 | sum += ru.ru_stime.tv_sec*1e9 + ru.ru_stime.tv_usec*1e3; | |
410 | ||
411 | return sum; | |
412 | } | |
413 | ||
c0c9e721 | 414 | static int self_open_counters(void) |
ec156764 | 415 | { |
c0c9e721 XG |
416 | struct perf_event_attr attr; |
417 | int fd; | |
ec156764 | 418 | |
c0c9e721 | 419 | memset(&attr, 0, sizeof(attr)); |
ec156764 | 420 | |
c0c9e721 XG |
421 | attr.type = PERF_TYPE_SOFTWARE; |
422 | attr.config = PERF_COUNT_SW_TASK_CLOCK; | |
ec156764 | 423 | |
c0c9e721 XG |
424 | fd = sys_perf_event_open(&attr, 0, -1, -1, 0); |
425 | ||
426 | if (fd < 0) | |
427 | die("Error: sys_perf_event_open() syscall returned" | |
428 | "with %d (%s)\n", fd, strerror(errno)); | |
429 | return fd; | |
430 | } | |
431 | ||
432 | static u64 get_cpu_usage_nsec_self(int fd) | |
433 | { | |
434 | u64 runtime; | |
435 | int ret; | |
436 | ||
437 | ret = read(fd, &runtime, sizeof(runtime)); | |
438 | BUG_ON(ret != sizeof(runtime)); | |
439 | ||
440 | return runtime; | |
ec156764 IM |
441 | } |
442 | ||
443 | static void *thread_func(void *ctx) | |
444 | { | |
445 | struct task_desc *this_task = ctx; | |
b1ffe8f3 | 446 | u64 cpu_usage_0, cpu_usage_1; |
ec156764 IM |
447 | unsigned long i, ret; |
448 | char comm2[22]; | |
c0c9e721 | 449 | int fd; |
ec156764 | 450 | |
ec156764 IM |
451 | sprintf(comm2, ":%s", this_task->comm); |
452 | prctl(PR_SET_NAME, comm2); | |
c0c9e721 | 453 | fd = self_open_counters(); |
ec156764 IM |
454 | |
455 | again: | |
456 | ret = sem_post(&this_task->ready_for_work); | |
457 | BUG_ON(ret); | |
ec156764 IM |
458 | ret = pthread_mutex_lock(&start_work_mutex); |
459 | BUG_ON(ret); | |
460 | ret = pthread_mutex_unlock(&start_work_mutex); | |
461 | BUG_ON(ret); | |
ec156764 | 462 | |
c0c9e721 | 463 | cpu_usage_0 = get_cpu_usage_nsec_self(fd); |
ec156764 IM |
464 | |
465 | for (i = 0; i < this_task->nr_events; i++) { | |
466 | this_task->curr_event = i; | |
39aeb52f | 467 | process_sched_event(this_task, this_task->atoms[i]); |
ec156764 IM |
468 | } |
469 | ||
c0c9e721 | 470 | cpu_usage_1 = get_cpu_usage_nsec_self(fd); |
ec156764 | 471 | this_task->cpu_usage = cpu_usage_1 - cpu_usage_0; |
ec156764 IM |
472 | ret = sem_post(&this_task->work_done_sem); |
473 | BUG_ON(ret); | |
ec156764 IM |
474 | |
475 | ret = pthread_mutex_lock(&work_done_wait_mutex); | |
476 | BUG_ON(ret); | |
477 | ret = pthread_mutex_unlock(&work_done_wait_mutex); | |
478 | BUG_ON(ret); | |
ec156764 IM |
479 | |
480 | goto again; | |
481 | } | |
482 | ||
483 | static void create_tasks(void) | |
484 | { | |
485 | struct task_desc *task; | |
486 | pthread_attr_t attr; | |
487 | unsigned long i; | |
488 | int err; | |
489 | ||
490 | err = pthread_attr_init(&attr); | |
491 | BUG_ON(err); | |
12f7e036 JP |
492 | err = pthread_attr_setstacksize(&attr, |
493 | (size_t) max(16 * 1024, PTHREAD_STACK_MIN)); | |
ec156764 IM |
494 | BUG_ON(err); |
495 | err = pthread_mutex_lock(&start_work_mutex); | |
496 | BUG_ON(err); | |
497 | err = pthread_mutex_lock(&work_done_wait_mutex); | |
498 | BUG_ON(err); | |
499 | for (i = 0; i < nr_tasks; i++) { | |
500 | task = tasks[i]; | |
501 | sem_init(&task->sleep_sem, 0, 0); | |
502 | sem_init(&task->ready_for_work, 0, 0); | |
503 | sem_init(&task->work_done_sem, 0, 0); | |
504 | task->curr_event = 0; | |
505 | err = pthread_create(&task->thread, &attr, thread_func, task); | |
506 | BUG_ON(err); | |
507 | } | |
508 | } | |
509 | ||
ec156764 IM |
510 | static void wait_for_tasks(void) |
511 | { | |
b1ffe8f3 | 512 | u64 cpu_usage_0, cpu_usage_1; |
ec156764 IM |
513 | struct task_desc *task; |
514 | unsigned long i, ret; | |
515 | ||
ec156764 | 516 | start_time = get_nsecs(); |
ec156764 IM |
517 | cpu_usage = 0; |
518 | pthread_mutex_unlock(&work_done_wait_mutex); | |
519 | ||
520 | for (i = 0; i < nr_tasks; i++) { | |
521 | task = tasks[i]; | |
522 | ret = sem_wait(&task->ready_for_work); | |
523 | BUG_ON(ret); | |
524 | sem_init(&task->ready_for_work, 0, 0); | |
525 | } | |
526 | ret = pthread_mutex_lock(&work_done_wait_mutex); | |
527 | BUG_ON(ret); | |
528 | ||
529 | cpu_usage_0 = get_cpu_usage_nsec_parent(); | |
530 | ||
531 | pthread_mutex_unlock(&start_work_mutex); | |
532 | ||
ec156764 IM |
533 | for (i = 0; i < nr_tasks; i++) { |
534 | task = tasks[i]; | |
535 | ret = sem_wait(&task->work_done_sem); | |
536 | BUG_ON(ret); | |
537 | sem_init(&task->work_done_sem, 0, 0); | |
538 | cpu_usage += task->cpu_usage; | |
539 | task->cpu_usage = 0; | |
540 | } | |
541 | ||
542 | cpu_usage_1 = get_cpu_usage_nsec_parent(); | |
543 | if (!runavg_cpu_usage) | |
544 | runavg_cpu_usage = cpu_usage; | |
545 | runavg_cpu_usage = (runavg_cpu_usage*9 + cpu_usage)/10; | |
546 | ||
547 | parent_cpu_usage = cpu_usage_1 - cpu_usage_0; | |
548 | if (!runavg_parent_cpu_usage) | |
549 | runavg_parent_cpu_usage = parent_cpu_usage; | |
550 | runavg_parent_cpu_usage = (runavg_parent_cpu_usage*9 + | |
551 | parent_cpu_usage)/10; | |
552 | ||
553 | ret = pthread_mutex_lock(&start_work_mutex); | |
554 | BUG_ON(ret); | |
555 | ||
556 | for (i = 0; i < nr_tasks; i++) { | |
557 | task = tasks[i]; | |
558 | sem_init(&task->sleep_sem, 0, 0); | |
559 | task->curr_event = 0; | |
560 | } | |
561 | } | |
562 | ||
ec156764 IM |
563 | static void run_one_test(void) |
564 | { | |
b1ffe8f3 | 565 | u64 T0, T1, delta, avg_delta, fluct, std_dev; |
ec156764 IM |
566 | |
567 | T0 = get_nsecs(); | |
568 | wait_for_tasks(); | |
569 | T1 = get_nsecs(); | |
570 | ||
571 | delta = T1 - T0; | |
572 | sum_runtime += delta; | |
573 | nr_runs++; | |
574 | ||
575 | avg_delta = sum_runtime / nr_runs; | |
576 | if (delta < avg_delta) | |
577 | fluct = avg_delta - delta; | |
578 | else | |
579 | fluct = delta - avg_delta; | |
580 | sum_fluct += fluct; | |
581 | std_dev = sum_fluct / nr_runs / sqrt(nr_runs); | |
582 | if (!run_avg) | |
583 | run_avg = delta; | |
584 | run_avg = (run_avg*9 + delta)/10; | |
585 | ||
ad236fd2 | 586 | printf("#%-3ld: %0.3f, ", |
ec156764 IM |
587 | nr_runs, (double)delta/1000000.0); |
588 | ||
ad236fd2 | 589 | printf("ravg: %0.2f, ", |
ec156764 IM |
590 | (double)run_avg/1e6); |
591 | ||
ad236fd2 | 592 | printf("cpu: %0.2f / %0.2f", |
ec156764 IM |
593 | (double)cpu_usage/1e6, (double)runavg_cpu_usage/1e6); |
594 | ||
595 | #if 0 | |
596 | /* | |
fbf94829 IM |
597 | * rusage statistics done by the parent, these are less |
598 | * accurate than the sum_exec_runtime based statistics: | |
599 | */ | |
ad236fd2 | 600 | printf(" [%0.2f / %0.2f]", |
ec156764 IM |
601 | (double)parent_cpu_usage/1e6, |
602 | (double)runavg_parent_cpu_usage/1e6); | |
603 | #endif | |
604 | ||
ad236fd2 | 605 | printf("\n"); |
ec156764 IM |
606 | |
607 | if (nr_sleep_corrections) | |
ad236fd2 | 608 | printf(" (%ld sleep corrections)\n", nr_sleep_corrections); |
ec156764 IM |
609 | nr_sleep_corrections = 0; |
610 | } | |
611 | ||
612 | static void test_calibrations(void) | |
613 | { | |
b1ffe8f3 | 614 | u64 T0, T1; |
ec156764 IM |
615 | |
616 | T0 = get_nsecs(); | |
617 | burn_nsecs(1e6); | |
618 | T1 = get_nsecs(); | |
619 | ||
9486aa38 | 620 | printf("the run test took %" PRIu64 " nsecs\n", T1 - T0); |
ec156764 IM |
621 | |
622 | T0 = get_nsecs(); | |
623 | sleep_nsecs(1e6); | |
624 | T1 = get_nsecs(); | |
625 | ||
9486aa38 | 626 | printf("the sleep test took %" PRIu64 " nsecs\n", T1 - T0); |
ec156764 IM |
627 | } |
628 | ||
46538818 FW |
629 | #define FILL_FIELD(ptr, field, event, data) \ |
630 | ptr.field = (typeof(ptr.field)) raw_field_value(event, #field, data) | |
631 | ||
632 | #define FILL_ARRAY(ptr, array, event, data) \ | |
633 | do { \ | |
634 | void *__array = raw_field_ptr(event, #array, data); \ | |
635 | memcpy(ptr.array, __array, sizeof(ptr.array)); \ | |
636 | } while(0) | |
637 | ||
638 | #define FILL_COMMON_FIELDS(ptr, event, data) \ | |
639 | do { \ | |
640 | FILL_FIELD(ptr, common_type, event, data); \ | |
641 | FILL_FIELD(ptr, common_flags, event, data); \ | |
642 | FILL_FIELD(ptr, common_preempt_count, event, data); \ | |
643 | FILL_FIELD(ptr, common_pid, event, data); \ | |
644 | FILL_FIELD(ptr, common_tgid, event, data); \ | |
645 | } while (0) | |
646 | ||
419ab0d6 FW |
647 | |
648 | ||
649 | struct trace_switch_event { | |
650 | u32 size; | |
651 | ||
652 | u16 common_type; | |
653 | u8 common_flags; | |
654 | u8 common_preempt_count; | |
655 | u32 common_pid; | |
656 | u32 common_tgid; | |
657 | ||
658 | char prev_comm[16]; | |
659 | u32 prev_pid; | |
660 | u32 prev_prio; | |
661 | u64 prev_state; | |
662 | char next_comm[16]; | |
663 | u32 next_pid; | |
664 | u32 next_prio; | |
665 | }; | |
666 | ||
39aeb52f | 667 | struct trace_runtime_event { |
668 | u32 size; | |
669 | ||
670 | u16 common_type; | |
671 | u8 common_flags; | |
672 | u8 common_preempt_count; | |
673 | u32 common_pid; | |
674 | u32 common_tgid; | |
675 | ||
676 | char comm[16]; | |
677 | u32 pid; | |
678 | u64 runtime; | |
679 | u64 vruntime; | |
680 | }; | |
419ab0d6 | 681 | |
fbf94829 IM |
682 | struct trace_wakeup_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 comm[16]; | |
692 | u32 pid; | |
693 | ||
694 | u32 prio; | |
695 | u32 success; | |
696 | u32 cpu; | |
697 | }; | |
698 | ||
419ab0d6 FW |
699 | struct trace_fork_event { |
700 | u32 size; | |
46538818 | 701 | |
419ab0d6 FW |
702 | u16 common_type; |
703 | u8 common_flags; | |
704 | u8 common_preempt_count; | |
705 | u32 common_pid; | |
706 | u32 common_tgid; | |
707 | ||
708 | char parent_comm[16]; | |
709 | u32 parent_pid; | |
710 | char child_comm[16]; | |
711 | u32 child_pid; | |
712 | }; | |
713 | ||
55ffb7a6 MG |
714 | struct trace_migrate_task_event { |
715 | u32 size; | |
716 | ||
717 | u16 common_type; | |
718 | u8 common_flags; | |
719 | u8 common_preempt_count; | |
720 | u32 common_pid; | |
721 | u32 common_tgid; | |
722 | ||
723 | char comm[16]; | |
724 | u32 pid; | |
725 | ||
726 | u32 prio; | |
727 | u32 cpu; | |
728 | }; | |
729 | ||
419ab0d6 FW |
730 | struct trace_sched_handler { |
731 | void (*switch_event)(struct trace_switch_event *, | |
b3165f41 | 732 | struct perf_session *, |
419ab0d6 FW |
733 | struct event *, |
734 | int cpu, | |
735 | u64 timestamp, | |
736 | struct thread *thread); | |
737 | ||
39aeb52f | 738 | void (*runtime_event)(struct trace_runtime_event *, |
b3165f41 | 739 | struct perf_session *, |
39aeb52f | 740 | struct event *, |
741 | int cpu, | |
742 | u64 timestamp, | |
743 | struct thread *thread); | |
744 | ||
419ab0d6 | 745 | void (*wakeup_event)(struct trace_wakeup_event *, |
b3165f41 | 746 | struct perf_session *, |
419ab0d6 FW |
747 | struct event *, |
748 | int cpu, | |
749 | u64 timestamp, | |
750 | struct thread *thread); | |
751 | ||
752 | void (*fork_event)(struct trace_fork_event *, | |
753 | struct event *, | |
754 | int cpu, | |
755 | u64 timestamp, | |
756 | struct thread *thread); | |
55ffb7a6 MG |
757 | |
758 | void (*migrate_task_event)(struct trace_migrate_task_event *, | |
b3165f41 | 759 | struct perf_session *session, |
55ffb7a6 MG |
760 | struct event *, |
761 | int cpu, | |
762 | u64 timestamp, | |
763 | struct thread *thread); | |
419ab0d6 | 764 | }; |
46538818 | 765 | |
46538818 | 766 | |
419ab0d6 FW |
767 | static void |
768 | replay_wakeup_event(struct trace_wakeup_event *wakeup_event, | |
b3165f41 | 769 | struct perf_session *session __used, |
419ab0d6 FW |
770 | struct event *event, |
771 | int cpu __used, | |
772 | u64 timestamp __used, | |
773 | struct thread *thread __used) | |
774 | { | |
775 | struct task_desc *waker, *wakee; | |
fbf94829 | 776 | |
ad236fd2 IM |
777 | if (verbose) { |
778 | printf("sched_wakeup event %p\n", event); | |
fbf94829 | 779 | |
ad236fd2 | 780 | printf(" ... pid %d woke up %s/%d\n", |
419ab0d6 FW |
781 | wakeup_event->common_pid, |
782 | wakeup_event->comm, | |
783 | wakeup_event->pid); | |
ad236fd2 | 784 | } |
fbf94829 | 785 | |
419ab0d6 FW |
786 | waker = register_pid(wakeup_event->common_pid, "<unknown>"); |
787 | wakee = register_pid(wakeup_event->pid, wakeup_event->comm); | |
fbf94829 IM |
788 | |
789 | add_sched_event_wakeup(waker, timestamp, wakee); | |
ec156764 IM |
790 | } |
791 | ||
d1153389 | 792 | static u64 cpu_last_switched[MAX_CPUS]; |
fbf94829 IM |
793 | |
794 | static void | |
419ab0d6 | 795 | replay_switch_event(struct trace_switch_event *switch_event, |
b3165f41 | 796 | struct perf_session *session __used, |
419ab0d6 FW |
797 | struct event *event, |
798 | int cpu, | |
799 | u64 timestamp, | |
800 | struct thread *thread __used) | |
ec156764 | 801 | { |
fbf94829 IM |
802 | struct task_desc *prev, *next; |
803 | u64 timestamp0; | |
804 | s64 delta; | |
805 | ||
ad236fd2 IM |
806 | if (verbose) |
807 | printf("sched_switch event %p\n", event); | |
808 | ||
fbf94829 IM |
809 | if (cpu >= MAX_CPUS || cpu < 0) |
810 | return; | |
811 | ||
812 | timestamp0 = cpu_last_switched[cpu]; | |
813 | if (timestamp0) | |
814 | delta = timestamp - timestamp0; | |
815 | else | |
816 | delta = 0; | |
817 | ||
818 | if (delta < 0) | |
9486aa38 | 819 | die("hm, delta: %" PRIu64 " < 0 ?\n", delta); |
fbf94829 | 820 | |
ad236fd2 | 821 | if (verbose) { |
9486aa38 | 822 | printf(" ... switch from %s/%d to %s/%d [ran %" PRIu64 " nsecs]\n", |
419ab0d6 FW |
823 | switch_event->prev_comm, switch_event->prev_pid, |
824 | switch_event->next_comm, switch_event->next_pid, | |
ad236fd2 IM |
825 | delta); |
826 | } | |
fbf94829 | 827 | |
419ab0d6 FW |
828 | prev = register_pid(switch_event->prev_pid, switch_event->prev_comm); |
829 | next = register_pid(switch_event->next_pid, switch_event->next_comm); | |
fbf94829 IM |
830 | |
831 | cpu_last_switched[cpu] = timestamp; | |
832 | ||
833 | add_sched_event_run(prev, timestamp, delta); | |
419ab0d6 | 834 | add_sched_event_sleep(prev, timestamp, switch_event->prev_state); |
fbf94829 IM |
835 | } |
836 | ||
fbf94829 | 837 | |
419ab0d6 FW |
838 | static void |
839 | replay_fork_event(struct trace_fork_event *fork_event, | |
840 | struct event *event, | |
841 | int cpu __used, | |
842 | u64 timestamp __used, | |
843 | struct thread *thread __used) | |
844 | { | |
845 | if (verbose) { | |
846 | printf("sched_fork event %p\n", event); | |
847 | printf("... parent: %s/%d\n", fork_event->parent_comm, fork_event->parent_pid); | |
848 | printf("... child: %s/%d\n", fork_event->child_comm, fork_event->child_pid); | |
849 | } | |
850 | register_pid(fork_event->parent_pid, fork_event->parent_comm); | |
851 | register_pid(fork_event->child_pid, fork_event->child_comm); | |
852 | } | |
fbf94829 | 853 | |
419ab0d6 | 854 | static struct trace_sched_handler replay_ops = { |
ea92ed5a IM |
855 | .wakeup_event = replay_wakeup_event, |
856 | .switch_event = replay_switch_event, | |
857 | .fork_event = replay_fork_event, | |
fbf94829 IM |
858 | }; |
859 | ||
b1ffe8f3 IM |
860 | struct sort_dimension { |
861 | const char *name; | |
b5fae128 | 862 | sort_fn_t cmp; |
b1ffe8f3 IM |
863 | struct list_head list; |
864 | }; | |
865 | ||
866 | static LIST_HEAD(cmp_pid); | |
867 | ||
daa1d7a5 | 868 | static int |
39aeb52f | 869 | thread_lat_cmp(struct list_head *list, struct work_atoms *l, struct work_atoms *r) |
daa1d7a5 FW |
870 | { |
871 | struct sort_dimension *sort; | |
872 | int ret = 0; | |
873 | ||
b5fae128 IM |
874 | BUG_ON(list_empty(list)); |
875 | ||
daa1d7a5 FW |
876 | list_for_each_entry(sort, list, list) { |
877 | ret = sort->cmp(l, r); | |
878 | if (ret) | |
879 | return ret; | |
880 | } | |
881 | ||
882 | return ret; | |
883 | } | |
884 | ||
39aeb52f | 885 | static struct work_atoms * |
b5fae128 IM |
886 | thread_atoms_search(struct rb_root *root, struct thread *thread, |
887 | struct list_head *sort_list) | |
888 | { | |
889 | struct rb_node *node = root->rb_node; | |
39aeb52f | 890 | struct work_atoms key = { .thread = thread }; |
b5fae128 IM |
891 | |
892 | while (node) { | |
39aeb52f | 893 | struct work_atoms *atoms; |
b5fae128 IM |
894 | int cmp; |
895 | ||
39aeb52f | 896 | atoms = container_of(node, struct work_atoms, node); |
b5fae128 IM |
897 | |
898 | cmp = thread_lat_cmp(sort_list, &key, atoms); | |
899 | if (cmp > 0) | |
900 | node = node->rb_left; | |
901 | else if (cmp < 0) | |
902 | node = node->rb_right; | |
903 | else { | |
904 | BUG_ON(thread != atoms->thread); | |
905 | return atoms; | |
906 | } | |
907 | } | |
908 | return NULL; | |
909 | } | |
910 | ||
cdce9d73 | 911 | static void |
39aeb52f | 912 | __thread_latency_insert(struct rb_root *root, struct work_atoms *data, |
daa1d7a5 | 913 | struct list_head *sort_list) |
cdce9d73 FW |
914 | { |
915 | struct rb_node **new = &(root->rb_node), *parent = NULL; | |
916 | ||
917 | while (*new) { | |
39aeb52f | 918 | struct work_atoms *this; |
daa1d7a5 | 919 | int cmp; |
cdce9d73 | 920 | |
39aeb52f | 921 | this = container_of(*new, struct work_atoms, node); |
cdce9d73 | 922 | parent = *new; |
daa1d7a5 FW |
923 | |
924 | cmp = thread_lat_cmp(sort_list, data, this); | |
925 | ||
926 | if (cmp > 0) | |
cdce9d73 | 927 | new = &((*new)->rb_left); |
cdce9d73 | 928 | else |
daa1d7a5 | 929 | new = &((*new)->rb_right); |
cdce9d73 FW |
930 | } |
931 | ||
932 | rb_link_node(&data->node, parent, new); | |
933 | rb_insert_color(&data->node, root); | |
934 | } | |
935 | ||
b1ffe8f3 | 936 | static void thread_atoms_insert(struct thread *thread) |
cdce9d73 | 937 | { |
36479484 | 938 | struct work_atoms *atoms = zalloc(sizeof(*atoms)); |
17562205 | 939 | if (!atoms) |
cdce9d73 FW |
940 | die("No memory"); |
941 | ||
17562205 | 942 | atoms->thread = thread; |
39aeb52f | 943 | INIT_LIST_HEAD(&atoms->work_list); |
b1ffe8f3 | 944 | __thread_latency_insert(&atom_root, atoms, &cmp_pid); |
cdce9d73 FW |
945 | } |
946 | ||
947 | static void | |
948 | latency_fork_event(struct trace_fork_event *fork_event __used, | |
949 | struct event *event __used, | |
950 | int cpu __used, | |
951 | u64 timestamp __used, | |
952 | struct thread *thread __used) | |
953 | { | |
954 | /* should insert the newcomer */ | |
955 | } | |
956 | ||
ea92ed5a | 957 | __used |
cdce9d73 FW |
958 | static char sched_out_state(struct trace_switch_event *switch_event) |
959 | { | |
960 | const char *str = TASK_STATE_TO_CHAR_STR; | |
961 | ||
962 | return str[switch_event->prev_state]; | |
963 | } | |
964 | ||
965 | static void | |
39aeb52f | 966 | add_sched_out_event(struct work_atoms *atoms, |
967 | char run_state, | |
968 | u64 timestamp) | |
cdce9d73 | 969 | { |
36479484 | 970 | struct work_atom *atom = zalloc(sizeof(*atom)); |
b1ffe8f3 | 971 | if (!atom) |
cdce9d73 FW |
972 | die("Non memory"); |
973 | ||
aa1ab9d2 FW |
974 | atom->sched_out_time = timestamp; |
975 | ||
39aeb52f | 976 | if (run_state == 'R') { |
b1ffe8f3 | 977 | atom->state = THREAD_WAIT_CPU; |
aa1ab9d2 | 978 | atom->wake_up_time = atom->sched_out_time; |
c6ced611 FW |
979 | } |
980 | ||
39aeb52f | 981 | list_add_tail(&atom->list, &atoms->work_list); |
cdce9d73 FW |
982 | } |
983 | ||
984 | static void | |
39aeb52f | 985 | add_runtime_event(struct work_atoms *atoms, u64 delta, u64 timestamp __used) |
986 | { | |
987 | struct work_atom *atom; | |
988 | ||
989 | BUG_ON(list_empty(&atoms->work_list)); | |
990 | ||
991 | atom = list_entry(atoms->work_list.prev, struct work_atom, list); | |
992 | ||
993 | atom->runtime += delta; | |
994 | atoms->total_runtime += delta; | |
995 | } | |
996 | ||
997 | static void | |
998 | add_sched_in_event(struct work_atoms *atoms, u64 timestamp) | |
cdce9d73 | 999 | { |
b1ffe8f3 | 1000 | struct work_atom *atom; |
66685678 | 1001 | u64 delta; |
cdce9d73 | 1002 | |
39aeb52f | 1003 | if (list_empty(&atoms->work_list)) |
cdce9d73 FW |
1004 | return; |
1005 | ||
39aeb52f | 1006 | atom = list_entry(atoms->work_list.prev, struct work_atom, list); |
cdce9d73 | 1007 | |
b1ffe8f3 | 1008 | if (atom->state != THREAD_WAIT_CPU) |
cdce9d73 FW |
1009 | return; |
1010 | ||
b1ffe8f3 IM |
1011 | if (timestamp < atom->wake_up_time) { |
1012 | atom->state = THREAD_IGNORE; | |
cdce9d73 FW |
1013 | return; |
1014 | } | |
1015 | ||
b1ffe8f3 IM |
1016 | atom->state = THREAD_SCHED_IN; |
1017 | atom->sched_in_time = timestamp; | |
66685678 | 1018 | |
b1ffe8f3 | 1019 | delta = atom->sched_in_time - atom->wake_up_time; |
66685678 | 1020 | atoms->total_lat += delta; |
3786310a | 1021 | if (delta > atoms->max_lat) { |
66685678 | 1022 | atoms->max_lat = delta; |
3786310a FW |
1023 | atoms->max_lat_at = timestamp; |
1024 | } | |
66685678 | 1025 | atoms->nb_atoms++; |
cdce9d73 FW |
1026 | } |
1027 | ||
cdce9d73 FW |
1028 | static void |
1029 | latency_switch_event(struct trace_switch_event *switch_event, | |
b3165f41 | 1030 | struct perf_session *session, |
cdce9d73 | 1031 | struct event *event __used, |
ea92ed5a | 1032 | int cpu, |
cdce9d73 FW |
1033 | u64 timestamp, |
1034 | struct thread *thread __used) | |
1035 | { | |
39aeb52f | 1036 | struct work_atoms *out_events, *in_events; |
cdce9d73 | 1037 | struct thread *sched_out, *sched_in; |
ea92ed5a IM |
1038 | u64 timestamp0; |
1039 | s64 delta; | |
1040 | ||
39aeb52f | 1041 | BUG_ON(cpu >= MAX_CPUS || cpu < 0); |
ea92ed5a IM |
1042 | |
1043 | timestamp0 = cpu_last_switched[cpu]; | |
1044 | cpu_last_switched[cpu] = timestamp; | |
1045 | if (timestamp0) | |
1046 | delta = timestamp - timestamp0; | |
1047 | else | |
1048 | delta = 0; | |
1049 | ||
1050 | if (delta < 0) | |
9486aa38 | 1051 | die("hm, delta: %" PRIu64 " < 0 ?\n", delta); |
ea92ed5a | 1052 | |
cdce9d73 | 1053 | |
b3165f41 ACM |
1054 | sched_out = perf_session__findnew(session, switch_event->prev_pid); |
1055 | sched_in = perf_session__findnew(session, switch_event->next_pid); | |
cdce9d73 | 1056 | |
39aeb52f | 1057 | out_events = thread_atoms_search(&atom_root, sched_out, &cmp_pid); |
1058 | if (!out_events) { | |
1059 | thread_atoms_insert(sched_out); | |
1060 | out_events = thread_atoms_search(&atom_root, sched_out, &cmp_pid); | |
1061 | if (!out_events) | |
1062 | die("out-event: Internal tree error"); | |
1063 | } | |
1064 | add_sched_out_event(out_events, sched_out_state(switch_event), timestamp); | |
1065 | ||
1066 | in_events = thread_atoms_search(&atom_root, sched_in, &cmp_pid); | |
1067 | if (!in_events) { | |
b1ffe8f3 | 1068 | thread_atoms_insert(sched_in); |
39aeb52f | 1069 | in_events = thread_atoms_search(&atom_root, sched_in, &cmp_pid); |
1070 | if (!in_events) | |
1071 | die("in-event: Internal tree error"); | |
1072 | /* | |
1073 | * Take came in we have not heard about yet, | |
1074 | * add in an initial atom in runnable state: | |
1075 | */ | |
1076 | add_sched_out_event(in_events, 'R', timestamp); | |
cdce9d73 | 1077 | } |
39aeb52f | 1078 | add_sched_in_event(in_events, timestamp); |
1079 | } | |
cdce9d73 | 1080 | |
39aeb52f | 1081 | static void |
1082 | latency_runtime_event(struct trace_runtime_event *runtime_event, | |
b3165f41 | 1083 | struct perf_session *session, |
39aeb52f | 1084 | struct event *event __used, |
1085 | int cpu, | |
1086 | u64 timestamp, | |
1087 | struct thread *this_thread __used) | |
1088 | { | |
b3165f41 | 1089 | struct thread *thread = perf_session__findnew(session, runtime_event->pid); |
d5b889f2 | 1090 | struct work_atoms *atoms = thread_atoms_search(&atom_root, thread, &cmp_pid); |
39aeb52f | 1091 | |
1092 | BUG_ON(cpu >= MAX_CPUS || cpu < 0); | |
39aeb52f | 1093 | if (!atoms) { |
1094 | thread_atoms_insert(thread); | |
1095 | atoms = thread_atoms_search(&atom_root, thread, &cmp_pid); | |
1096 | if (!atoms) | |
1097 | die("in-event: Internal tree error"); | |
1098 | add_sched_out_event(atoms, 'R', timestamp); | |
cdce9d73 FW |
1099 | } |
1100 | ||
39aeb52f | 1101 | add_runtime_event(atoms, runtime_event->runtime, timestamp); |
cdce9d73 FW |
1102 | } |
1103 | ||
1104 | static void | |
1105 | latency_wakeup_event(struct trace_wakeup_event *wakeup_event, | |
b3165f41 | 1106 | struct perf_session *session, |
39aeb52f | 1107 | struct event *__event __used, |
cdce9d73 FW |
1108 | int cpu __used, |
1109 | u64 timestamp, | |
1110 | struct thread *thread __used) | |
1111 | { | |
39aeb52f | 1112 | struct work_atoms *atoms; |
b1ffe8f3 | 1113 | struct work_atom *atom; |
cdce9d73 FW |
1114 | struct thread *wakee; |
1115 | ||
1116 | /* Note for later, it may be interesting to observe the failing cases */ | |
1117 | if (!wakeup_event->success) | |
1118 | return; | |
1119 | ||
b3165f41 | 1120 | wakee = perf_session__findnew(session, wakeup_event->pid); |
b5fae128 | 1121 | atoms = thread_atoms_search(&atom_root, wakee, &cmp_pid); |
17562205 | 1122 | if (!atoms) { |
b1ffe8f3 | 1123 | thread_atoms_insert(wakee); |
39aeb52f | 1124 | atoms = thread_atoms_search(&atom_root, wakee, &cmp_pid); |
1125 | if (!atoms) | |
1126 | die("wakeup-event: Internal tree error"); | |
1127 | add_sched_out_event(atoms, 'S', timestamp); | |
cdce9d73 FW |
1128 | } |
1129 | ||
39aeb52f | 1130 | BUG_ON(list_empty(&atoms->work_list)); |
cdce9d73 | 1131 | |
39aeb52f | 1132 | atom = list_entry(atoms->work_list.prev, struct work_atom, list); |
cdce9d73 | 1133 | |
55ffb7a6 MG |
1134 | /* |
1135 | * You WILL be missing events if you've recorded only | |
1136 | * one CPU, or are only looking at only one, so don't | |
1137 | * make useless noise. | |
1138 | */ | |
1139 | if (profile_cpu == -1 && atom->state != THREAD_SLEEPING) | |
dc02bf71 | 1140 | nr_state_machine_bugs++; |
cdce9d73 | 1141 | |
ea57c4f5 IM |
1142 | nr_timestamps++; |
1143 | if (atom->sched_out_time > timestamp) { | |
dc02bf71 | 1144 | nr_unordered_timestamps++; |
aa1ab9d2 | 1145 | return; |
ea57c4f5 | 1146 | } |
aa1ab9d2 | 1147 | |
b1ffe8f3 IM |
1148 | atom->state = THREAD_WAIT_CPU; |
1149 | atom->wake_up_time = timestamp; | |
cdce9d73 FW |
1150 | } |
1151 | ||
55ffb7a6 MG |
1152 | static void |
1153 | latency_migrate_task_event(struct trace_migrate_task_event *migrate_task_event, | |
b3165f41 | 1154 | struct perf_session *session, |
55ffb7a6 MG |
1155 | struct event *__event __used, |
1156 | int cpu __used, | |
1157 | u64 timestamp, | |
1158 | struct thread *thread __used) | |
1159 | { | |
1160 | struct work_atoms *atoms; | |
1161 | struct work_atom *atom; | |
1162 | struct thread *migrant; | |
1163 | ||
1164 | /* | |
1165 | * Only need to worry about migration when profiling one CPU. | |
1166 | */ | |
1167 | if (profile_cpu == -1) | |
1168 | return; | |
1169 | ||
b3165f41 | 1170 | migrant = perf_session__findnew(session, migrate_task_event->pid); |
55ffb7a6 MG |
1171 | atoms = thread_atoms_search(&atom_root, migrant, &cmp_pid); |
1172 | if (!atoms) { | |
1173 | thread_atoms_insert(migrant); | |
1174 | register_pid(migrant->pid, migrant->comm); | |
1175 | atoms = thread_atoms_search(&atom_root, migrant, &cmp_pid); | |
1176 | if (!atoms) | |
1177 | die("migration-event: Internal tree error"); | |
1178 | add_sched_out_event(atoms, 'R', timestamp); | |
1179 | } | |
1180 | ||
1181 | BUG_ON(list_empty(&atoms->work_list)); | |
1182 | ||
1183 | atom = list_entry(atoms->work_list.prev, struct work_atom, list); | |
1184 | atom->sched_in_time = atom->sched_out_time = atom->wake_up_time = timestamp; | |
1185 | ||
1186 | nr_timestamps++; | |
1187 | ||
1188 | if (atom->sched_out_time > timestamp) | |
1189 | nr_unordered_timestamps++; | |
1190 | } | |
1191 | ||
cdce9d73 | 1192 | static struct trace_sched_handler lat_ops = { |
ea92ed5a IM |
1193 | .wakeup_event = latency_wakeup_event, |
1194 | .switch_event = latency_switch_event, | |
39aeb52f | 1195 | .runtime_event = latency_runtime_event, |
ea92ed5a | 1196 | .fork_event = latency_fork_event, |
55ffb7a6 | 1197 | .migrate_task_event = latency_migrate_task_event, |
cdce9d73 FW |
1198 | }; |
1199 | ||
39aeb52f | 1200 | static void output_lat_thread(struct work_atoms *work_list) |
cdce9d73 | 1201 | { |
cdce9d73 FW |
1202 | int i; |
1203 | int ret; | |
66685678 | 1204 | u64 avg; |
cdce9d73 | 1205 | |
39aeb52f | 1206 | if (!work_list->nb_atoms) |
cdce9d73 | 1207 | return; |
ea57c4f5 IM |
1208 | /* |
1209 | * Ignore idle threads: | |
1210 | */ | |
80ed0987 | 1211 | if (!strcmp(work_list->thread->comm, "swapper")) |
ea57c4f5 | 1212 | return; |
cdce9d73 | 1213 | |
39aeb52f | 1214 | all_runtime += work_list->total_runtime; |
1215 | all_count += work_list->nb_atoms; | |
66685678 | 1216 | |
80ed0987 | 1217 | ret = printf(" %s:%d ", work_list->thread->comm, work_list->thread->pid); |
cdce9d73 | 1218 | |
08f69e6c | 1219 | for (i = 0; i < 24 - ret; i++) |
cdce9d73 FW |
1220 | printf(" "); |
1221 | ||
39aeb52f | 1222 | avg = work_list->total_lat / work_list->nb_atoms; |
cdce9d73 | 1223 | |
9486aa38 | 1224 | printf("|%11.3f ms |%9" PRIu64 " | avg:%9.3f ms | max:%9.3f ms | max at: %9.6f s\n", |
39aeb52f | 1225 | (double)work_list->total_runtime / 1e6, |
1226 | work_list->nb_atoms, (double)avg / 1e6, | |
3786310a FW |
1227 | (double)work_list->max_lat / 1e6, |
1228 | (double)work_list->max_lat_at / 1e9); | |
cdce9d73 FW |
1229 | } |
1230 | ||
39aeb52f | 1231 | static int pid_cmp(struct work_atoms *l, struct work_atoms *r) |
daa1d7a5 | 1232 | { |
daa1d7a5 FW |
1233 | if (l->thread->pid < r->thread->pid) |
1234 | return -1; | |
1235 | if (l->thread->pid > r->thread->pid) | |
1236 | return 1; | |
1237 | ||
1238 | return 0; | |
1239 | } | |
1240 | ||
1241 | static struct sort_dimension pid_sort_dimension = { | |
b5fae128 IM |
1242 | .name = "pid", |
1243 | .cmp = pid_cmp, | |
daa1d7a5 FW |
1244 | }; |
1245 | ||
39aeb52f | 1246 | static int avg_cmp(struct work_atoms *l, struct work_atoms *r) |
daa1d7a5 FW |
1247 | { |
1248 | u64 avgl, avgr; | |
1249 | ||
1250 | if (!l->nb_atoms) | |
1251 | return -1; | |
1252 | ||
1253 | if (!r->nb_atoms) | |
1254 | return 1; | |
1255 | ||
1256 | avgl = l->total_lat / l->nb_atoms; | |
1257 | avgr = r->total_lat / r->nb_atoms; | |
1258 | ||
1259 | if (avgl < avgr) | |
1260 | return -1; | |
1261 | if (avgl > avgr) | |
1262 | return 1; | |
1263 | ||
1264 | return 0; | |
1265 | } | |
1266 | ||
1267 | static struct sort_dimension avg_sort_dimension = { | |
b5fae128 IM |
1268 | .name = "avg", |
1269 | .cmp = avg_cmp, | |
daa1d7a5 FW |
1270 | }; |
1271 | ||
39aeb52f | 1272 | static int max_cmp(struct work_atoms *l, struct work_atoms *r) |
daa1d7a5 FW |
1273 | { |
1274 | if (l->max_lat < r->max_lat) | |
1275 | return -1; | |
1276 | if (l->max_lat > r->max_lat) | |
1277 | return 1; | |
1278 | ||
1279 | return 0; | |
1280 | } | |
1281 | ||
1282 | static struct sort_dimension max_sort_dimension = { | |
b5fae128 IM |
1283 | .name = "max", |
1284 | .cmp = max_cmp, | |
daa1d7a5 FW |
1285 | }; |
1286 | ||
39aeb52f | 1287 | static int switch_cmp(struct work_atoms *l, struct work_atoms *r) |
daa1d7a5 FW |
1288 | { |
1289 | if (l->nb_atoms < r->nb_atoms) | |
1290 | return -1; | |
1291 | if (l->nb_atoms > r->nb_atoms) | |
1292 | return 1; | |
1293 | ||
1294 | return 0; | |
1295 | } | |
1296 | ||
1297 | static struct sort_dimension switch_sort_dimension = { | |
b5fae128 IM |
1298 | .name = "switch", |
1299 | .cmp = switch_cmp, | |
daa1d7a5 FW |
1300 | }; |
1301 | ||
39aeb52f | 1302 | static int runtime_cmp(struct work_atoms *l, struct work_atoms *r) |
daa1d7a5 FW |
1303 | { |
1304 | if (l->total_runtime < r->total_runtime) | |
1305 | return -1; | |
1306 | if (l->total_runtime > r->total_runtime) | |
1307 | return 1; | |
1308 | ||
1309 | return 0; | |
1310 | } | |
1311 | ||
1312 | static struct sort_dimension runtime_sort_dimension = { | |
b5fae128 IM |
1313 | .name = "runtime", |
1314 | .cmp = runtime_cmp, | |
daa1d7a5 FW |
1315 | }; |
1316 | ||
1317 | static struct sort_dimension *available_sorts[] = { | |
1318 | &pid_sort_dimension, | |
1319 | &avg_sort_dimension, | |
1320 | &max_sort_dimension, | |
1321 | &switch_sort_dimension, | |
1322 | &runtime_sort_dimension, | |
1323 | }; | |
1324 | ||
1325 | #define NB_AVAILABLE_SORTS (int)(sizeof(available_sorts) / sizeof(struct sort_dimension *)) | |
1326 | ||
1327 | static LIST_HEAD(sort_list); | |
1328 | ||
cbef79a8 | 1329 | static int sort_dimension__add(const char *tok, struct list_head *list) |
daa1d7a5 FW |
1330 | { |
1331 | int i; | |
1332 | ||
1333 | for (i = 0; i < NB_AVAILABLE_SORTS; i++) { | |
1334 | if (!strcmp(available_sorts[i]->name, tok)) { | |
1335 | list_add_tail(&available_sorts[i]->list, list); | |
1336 | ||
1337 | return 0; | |
1338 | } | |
1339 | } | |
1340 | ||
1341 | return -1; | |
1342 | } | |
1343 | ||
1344 | static void setup_sorting(void); | |
1345 | ||
1346 | static void sort_lat(void) | |
1347 | { | |
1348 | struct rb_node *node; | |
1349 | ||
1350 | for (;;) { | |
39aeb52f | 1351 | struct work_atoms *data; |
b1ffe8f3 | 1352 | node = rb_first(&atom_root); |
daa1d7a5 FW |
1353 | if (!node) |
1354 | break; | |
1355 | ||
b1ffe8f3 | 1356 | rb_erase(node, &atom_root); |
39aeb52f | 1357 | data = rb_entry(node, struct work_atoms, node); |
b1ffe8f3 | 1358 | __thread_latency_insert(&sorted_atom_root, data, &sort_list); |
daa1d7a5 FW |
1359 | } |
1360 | } | |
1361 | ||
419ab0d6 FW |
1362 | static struct trace_sched_handler *trace_handler; |
1363 | ||
fbf94829 | 1364 | static void |
b3165f41 | 1365 | process_sched_wakeup_event(void *data, struct perf_session *session, |
419ab0d6 FW |
1366 | struct event *event, |
1367 | int cpu __used, | |
1368 | u64 timestamp __used, | |
1369 | struct thread *thread __used) | |
1370 | { | |
1371 | struct trace_wakeup_event wakeup_event; | |
1372 | ||
f48f669d | 1373 | FILL_COMMON_FIELDS(wakeup_event, event, data); |
419ab0d6 | 1374 | |
f48f669d XG |
1375 | FILL_ARRAY(wakeup_event, comm, event, data); |
1376 | FILL_FIELD(wakeup_event, pid, event, data); | |
1377 | FILL_FIELD(wakeup_event, prio, event, data); | |
1378 | FILL_FIELD(wakeup_event, success, event, data); | |
1379 | FILL_FIELD(wakeup_event, cpu, event, data); | |
419ab0d6 | 1380 | |
0ec04e16 | 1381 | if (trace_handler->wakeup_event) |
b3165f41 ACM |
1382 | trace_handler->wakeup_event(&wakeup_event, session, event, |
1383 | cpu, timestamp, thread); | |
419ab0d6 FW |
1384 | } |
1385 | ||
c8a37751 IM |
1386 | /* |
1387 | * Track the current task - that way we can know whether there's any | |
1388 | * weird events, such as a task being switched away that is not current. | |
1389 | */ | |
40749d0f | 1390 | static int max_cpu; |
0ec04e16 | 1391 | |
c8a37751 IM |
1392 | static u32 curr_pid[MAX_CPUS] = { [0 ... MAX_CPUS-1] = -1 }; |
1393 | ||
0ec04e16 IM |
1394 | static struct thread *curr_thread[MAX_CPUS]; |
1395 | ||
1396 | static char next_shortname1 = 'A'; | |
1397 | static char next_shortname2 = '0'; | |
1398 | ||
1399 | static void | |
1400 | map_switch_event(struct trace_switch_event *switch_event, | |
b3165f41 | 1401 | struct perf_session *session, |
0ec04e16 IM |
1402 | struct event *event __used, |
1403 | int this_cpu, | |
1404 | u64 timestamp, | |
1405 | struct thread *thread __used) | |
1406 | { | |
1407 | struct thread *sched_out, *sched_in; | |
1408 | int new_shortname; | |
1409 | u64 timestamp0; | |
1410 | s64 delta; | |
1411 | int cpu; | |
1412 | ||
1413 | BUG_ON(this_cpu >= MAX_CPUS || this_cpu < 0); | |
1414 | ||
1415 | if (this_cpu > max_cpu) | |
1416 | max_cpu = this_cpu; | |
1417 | ||
1418 | timestamp0 = cpu_last_switched[this_cpu]; | |
1419 | cpu_last_switched[this_cpu] = timestamp; | |
1420 | if (timestamp0) | |
1421 | delta = timestamp - timestamp0; | |
1422 | else | |
1423 | delta = 0; | |
1424 | ||
1425 | if (delta < 0) | |
9486aa38 | 1426 | die("hm, delta: %" PRIu64 " < 0 ?\n", delta); |
0ec04e16 IM |
1427 | |
1428 | ||
b3165f41 ACM |
1429 | sched_out = perf_session__findnew(session, switch_event->prev_pid); |
1430 | sched_in = perf_session__findnew(session, switch_event->next_pid); | |
0ec04e16 IM |
1431 | |
1432 | curr_thread[this_cpu] = sched_in; | |
1433 | ||
1434 | printf(" "); | |
1435 | ||
1436 | new_shortname = 0; | |
1437 | if (!sched_in->shortname[0]) { | |
1438 | sched_in->shortname[0] = next_shortname1; | |
1439 | sched_in->shortname[1] = next_shortname2; | |
1440 | ||
1441 | if (next_shortname1 < 'Z') { | |
1442 | next_shortname1++; | |
1443 | } else { | |
1444 | next_shortname1='A'; | |
1445 | if (next_shortname2 < '9') { | |
1446 | next_shortname2++; | |
1447 | } else { | |
1448 | next_shortname2='0'; | |
1449 | } | |
1450 | } | |
1451 | new_shortname = 1; | |
1452 | } | |
1453 | ||
1454 | for (cpu = 0; cpu <= max_cpu; cpu++) { | |
1455 | if (cpu != this_cpu) | |
1456 | printf(" "); | |
1457 | else | |
1458 | printf("*"); | |
1459 | ||
1460 | if (curr_thread[cpu]) { | |
1461 | if (curr_thread[cpu]->pid) | |
1462 | printf("%2s ", curr_thread[cpu]->shortname); | |
1463 | else | |
1464 | printf(". "); | |
1465 | } else | |
1466 | printf(" "); | |
1467 | } | |
1468 | ||
1469 | printf(" %12.6f secs ", (double)timestamp/1e9); | |
1470 | if (new_shortname) { | |
1471 | printf("%s => %s:%d\n", | |
1472 | sched_in->shortname, sched_in->comm, sched_in->pid); | |
1473 | } else { | |
1474 | printf("\n"); | |
1475 | } | |
1476 | } | |
1477 | ||
1478 | ||
419ab0d6 | 1479 | static void |
b3165f41 | 1480 | process_sched_switch_event(void *data, struct perf_session *session, |
419ab0d6 | 1481 | struct event *event, |
0ec04e16 | 1482 | int this_cpu, |
419ab0d6 FW |
1483 | u64 timestamp __used, |
1484 | struct thread *thread __used) | |
1485 | { | |
1486 | struct trace_switch_event switch_event; | |
1487 | ||
f48f669d | 1488 | FILL_COMMON_FIELDS(switch_event, event, data); |
419ab0d6 | 1489 | |
f48f669d XG |
1490 | FILL_ARRAY(switch_event, prev_comm, event, data); |
1491 | FILL_FIELD(switch_event, prev_pid, event, data); | |
1492 | FILL_FIELD(switch_event, prev_prio, event, data); | |
1493 | FILL_FIELD(switch_event, prev_state, event, data); | |
1494 | FILL_ARRAY(switch_event, next_comm, event, data); | |
1495 | FILL_FIELD(switch_event, next_pid, event, data); | |
1496 | FILL_FIELD(switch_event, next_prio, event, data); | |
419ab0d6 | 1497 | |
0ec04e16 | 1498 | if (curr_pid[this_cpu] != (u32)-1) { |
c8a37751 IM |
1499 | /* |
1500 | * Are we trying to switch away a PID that is | |
1501 | * not current? | |
1502 | */ | |
0ec04e16 | 1503 | if (curr_pid[this_cpu] != switch_event.prev_pid) |
c8a37751 IM |
1504 | nr_context_switch_bugs++; |
1505 | } | |
0ec04e16 | 1506 | if (trace_handler->switch_event) |
b3165f41 ACM |
1507 | trace_handler->switch_event(&switch_event, session, event, |
1508 | this_cpu, timestamp, thread); | |
c8a37751 | 1509 | |
0ec04e16 | 1510 | curr_pid[this_cpu] = switch_event.next_pid; |
419ab0d6 FW |
1511 | } |
1512 | ||
39aeb52f | 1513 | static void |
b3165f41 | 1514 | process_sched_runtime_event(void *data, struct perf_session *session, |
39aeb52f | 1515 | struct event *event, |
1516 | int cpu __used, | |
1517 | u64 timestamp __used, | |
1518 | struct thread *thread __used) | |
1519 | { | |
1520 | struct trace_runtime_event runtime_event; | |
1521 | ||
f48f669d XG |
1522 | FILL_ARRAY(runtime_event, comm, event, data); |
1523 | FILL_FIELD(runtime_event, pid, event, data); | |
1524 | FILL_FIELD(runtime_event, runtime, event, data); | |
1525 | FILL_FIELD(runtime_event, vruntime, event, data); | |
39aeb52f | 1526 | |
0ec04e16 | 1527 | if (trace_handler->runtime_event) |
b3165f41 | 1528 | trace_handler->runtime_event(&runtime_event, session, event, cpu, timestamp, thread); |
39aeb52f | 1529 | } |
1530 | ||
419ab0d6 | 1531 | static void |
f48f669d | 1532 | process_sched_fork_event(void *data, |
419ab0d6 FW |
1533 | struct event *event, |
1534 | int cpu __used, | |
1535 | u64 timestamp __used, | |
1536 | struct thread *thread __used) | |
fbf94829 | 1537 | { |
46538818 FW |
1538 | struct trace_fork_event fork_event; |
1539 | ||
f48f669d | 1540 | FILL_COMMON_FIELDS(fork_event, event, data); |
46538818 | 1541 | |
f48f669d XG |
1542 | FILL_ARRAY(fork_event, parent_comm, event, data); |
1543 | FILL_FIELD(fork_event, parent_pid, event, data); | |
1544 | FILL_ARRAY(fork_event, child_comm, event, data); | |
1545 | FILL_FIELD(fork_event, child_pid, event, data); | |
46538818 | 1546 | |
0ec04e16 | 1547 | if (trace_handler->fork_event) |
b3165f41 ACM |
1548 | trace_handler->fork_event(&fork_event, event, |
1549 | cpu, timestamp, thread); | |
fbf94829 IM |
1550 | } |
1551 | ||
419ab0d6 FW |
1552 | static void |
1553 | process_sched_exit_event(struct event *event, | |
1554 | int cpu __used, | |
1555 | u64 timestamp __used, | |
1556 | struct thread *thread __used) | |
fbf94829 | 1557 | { |
ad236fd2 IM |
1558 | if (verbose) |
1559 | printf("sched_exit event %p\n", event); | |
ec156764 IM |
1560 | } |
1561 | ||
55ffb7a6 | 1562 | static void |
b3165f41 | 1563 | process_sched_migrate_task_event(void *data, struct perf_session *session, |
55ffb7a6 MG |
1564 | struct event *event, |
1565 | int cpu __used, | |
1566 | u64 timestamp __used, | |
1567 | struct thread *thread __used) | |
1568 | { | |
1569 | struct trace_migrate_task_event migrate_task_event; | |
1570 | ||
f48f669d | 1571 | FILL_COMMON_FIELDS(migrate_task_event, event, data); |
55ffb7a6 | 1572 | |
f48f669d XG |
1573 | FILL_ARRAY(migrate_task_event, comm, event, data); |
1574 | FILL_FIELD(migrate_task_event, pid, event, data); | |
1575 | FILL_FIELD(migrate_task_event, prio, event, data); | |
1576 | FILL_FIELD(migrate_task_event, cpu, event, data); | |
55ffb7a6 MG |
1577 | |
1578 | if (trace_handler->migrate_task_event) | |
b3165f41 ACM |
1579 | trace_handler->migrate_task_event(&migrate_task_event, session, |
1580 | event, cpu, timestamp, thread); | |
55ffb7a6 MG |
1581 | } |
1582 | ||
8115d60c ACM |
1583 | static void process_raw_event(union perf_event *raw_event __used, |
1584 | struct perf_session *session, void *data, int cpu, | |
1585 | u64 timestamp, struct thread *thread) | |
ec156764 | 1586 | { |
ec156764 IM |
1587 | struct event *event; |
1588 | int type; | |
1589 | ||
d8bd9e0a | 1590 | |
f48f669d | 1591 | type = trace_parse_common_type(data); |
ec156764 IM |
1592 | event = trace_find_event(type); |
1593 | ||
ec156764 | 1594 | if (!strcmp(event->name, "sched_switch")) |
b3165f41 | 1595 | process_sched_switch_event(data, session, event, cpu, timestamp, thread); |
39aeb52f | 1596 | if (!strcmp(event->name, "sched_stat_runtime")) |
b3165f41 | 1597 | process_sched_runtime_event(data, session, event, cpu, timestamp, thread); |
ec156764 | 1598 | if (!strcmp(event->name, "sched_wakeup")) |
b3165f41 | 1599 | process_sched_wakeup_event(data, session, event, cpu, timestamp, thread); |
fbf94829 | 1600 | if (!strcmp(event->name, "sched_wakeup_new")) |
b3165f41 | 1601 | process_sched_wakeup_event(data, session, event, cpu, timestamp, thread); |
fbf94829 | 1602 | if (!strcmp(event->name, "sched_process_fork")) |
f48f669d | 1603 | process_sched_fork_event(data, event, cpu, timestamp, thread); |
fbf94829 IM |
1604 | if (!strcmp(event->name, "sched_process_exit")) |
1605 | process_sched_exit_event(event, cpu, timestamp, thread); | |
55ffb7a6 | 1606 | if (!strcmp(event->name, "sched_migrate_task")) |
b3165f41 | 1607 | process_sched_migrate_task_event(data, session, event, cpu, timestamp, thread); |
ec156764 IM |
1608 | } |
1609 | ||
8115d60c ACM |
1610 | static int process_sample_event(union perf_event *event, |
1611 | struct perf_sample *sample, | |
640c03ce | 1612 | struct perf_session *session) |
0a02ad93 | 1613 | { |
0a02ad93 | 1614 | struct thread *thread; |
a80deb62 | 1615 | |
c019879b | 1616 | if (!(session->sample_type & PERF_SAMPLE_RAW)) |
a80deb62 | 1617 | return 0; |
0a02ad93 | 1618 | |
640c03ce | 1619 | thread = perf_session__findnew(session, sample->pid); |
0a02ad93 | 1620 | if (thread == NULL) { |
6beba7ad ACM |
1621 | pr_debug("problem processing %d event, skipping it.\n", |
1622 | event->header.type); | |
0a02ad93 IM |
1623 | return -1; |
1624 | } | |
1625 | ||
f39cdf25 JL |
1626 | dump_printf(" ... thread: %s:%d\n", thread->comm, thread->pid); |
1627 | ||
640c03ce | 1628 | if (profile_cpu != -1 && profile_cpu != (int)sample->cpu) |
55ffb7a6 MG |
1629 | return 0; |
1630 | ||
640c03ce ACM |
1631 | process_raw_event(event, session, sample->raw_data, sample->cpu, |
1632 | sample->time, thread); | |
0a02ad93 IM |
1633 | |
1634 | return 0; | |
1635 | } | |
1636 | ||
301a0b02 | 1637 | static struct perf_event_ops event_ops = { |
a64eae70 | 1638 | .sample = process_sample_event, |
8115d60c ACM |
1639 | .comm = perf_event__process_comm, |
1640 | .lost = perf_event__process_lost, | |
1641 | .fork = perf_event__process_task, | |
a64eae70 | 1642 | .ordered_samples = true, |
016e92fb FW |
1643 | }; |
1644 | ||
46f392c9 | 1645 | static int read_events(void) |
0a02ad93 | 1646 | { |
d549c769 | 1647 | int err = -EINVAL; |
21ef97f0 IM |
1648 | struct perf_session *session = perf_session__new(input_name, O_RDONLY, |
1649 | 0, false, &event_ops); | |
94c744b6 ACM |
1650 | if (session == NULL) |
1651 | return -ENOMEM; | |
1652 | ||
cee75ac7 | 1653 | if (perf_session__has_traces(session, "record -R")) { |
d549c769 | 1654 | err = perf_session__process_events(session, &event_ops); |
cee75ac7 ACM |
1655 | nr_events = session->hists.stats.nr_events[0]; |
1656 | nr_lost_events = session->hists.stats.total_lost; | |
1657 | nr_lost_chunks = session->hists.stats.nr_events[PERF_RECORD_LOST]; | |
1658 | } | |
d549c769 | 1659 | |
94c744b6 ACM |
1660 | perf_session__delete(session); |
1661 | return err; | |
0a02ad93 IM |
1662 | } |
1663 | ||
0ec04e16 IM |
1664 | static void print_bad_events(void) |
1665 | { | |
1666 | if (nr_unordered_timestamps && nr_timestamps) { | |
1667 | printf(" INFO: %.3f%% unordered timestamps (%ld out of %ld)\n", | |
1668 | (double)nr_unordered_timestamps/(double)nr_timestamps*100.0, | |
1669 | nr_unordered_timestamps, nr_timestamps); | |
1670 | } | |
1671 | if (nr_lost_events && nr_events) { | |
1672 | printf(" INFO: %.3f%% lost events (%ld out of %ld, in %ld chunks)\n", | |
1673 | (double)nr_lost_events/(double)nr_events*100.0, | |
1674 | nr_lost_events, nr_events, nr_lost_chunks); | |
1675 | } | |
1676 | if (nr_state_machine_bugs && nr_timestamps) { | |
1677 | printf(" INFO: %.3f%% state machine bugs (%ld out of %ld)", | |
1678 | (double)nr_state_machine_bugs/(double)nr_timestamps*100.0, | |
1679 | nr_state_machine_bugs, nr_timestamps); | |
1680 | if (nr_lost_events) | |
1681 | printf(" (due to lost events?)"); | |
1682 | printf("\n"); | |
1683 | } | |
1684 | if (nr_context_switch_bugs && nr_timestamps) { | |
1685 | printf(" INFO: %.3f%% context switch bugs (%ld out of %ld)", | |
1686 | (double)nr_context_switch_bugs/(double)nr_timestamps*100.0, | |
1687 | nr_context_switch_bugs, nr_timestamps); | |
1688 | if (nr_lost_events) | |
1689 | printf(" (due to lost events?)"); | |
1690 | printf("\n"); | |
1691 | } | |
1692 | } | |
1693 | ||
1694 | static void __cmd_lat(void) | |
1695 | { | |
1696 | struct rb_node *next; | |
1697 | ||
1698 | setup_pager(); | |
1699 | read_events(); | |
1700 | sort_lat(); | |
1701 | ||
3786310a FW |
1702 | printf("\n ---------------------------------------------------------------------------------------------------------------\n"); |
1703 | printf(" Task | Runtime ms | Switches | Average delay ms | Maximum delay ms | Maximum delay at |\n"); | |
1704 | printf(" ---------------------------------------------------------------------------------------------------------------\n"); | |
0ec04e16 IM |
1705 | |
1706 | next = rb_first(&sorted_atom_root); | |
1707 | ||
1708 | while (next) { | |
1709 | struct work_atoms *work_list; | |
1710 | ||
1711 | work_list = rb_entry(next, struct work_atoms, node); | |
1712 | output_lat_thread(work_list); | |
1713 | next = rb_next(next); | |
1714 | } | |
1715 | ||
1716 | printf(" -----------------------------------------------------------------------------------------\n"); | |
9486aa38 | 1717 | printf(" TOTAL: |%11.3f ms |%9" PRIu64 " |\n", |
0ec04e16 IM |
1718 | (double)all_runtime/1e6, all_count); |
1719 | ||
1720 | printf(" ---------------------------------------------------\n"); | |
1721 | ||
1722 | print_bad_events(); | |
1723 | printf("\n"); | |
1724 | ||
1725 | } | |
1726 | ||
1727 | static struct trace_sched_handler map_ops = { | |
1728 | .wakeup_event = NULL, | |
1729 | .switch_event = map_switch_event, | |
1730 | .runtime_event = NULL, | |
1731 | .fork_event = NULL, | |
1732 | }; | |
1733 | ||
1734 | static void __cmd_map(void) | |
1735 | { | |
40749d0f IM |
1736 | max_cpu = sysconf(_SC_NPROCESSORS_CONF); |
1737 | ||
0ec04e16 IM |
1738 | setup_pager(); |
1739 | read_events(); | |
1740 | print_bad_events(); | |
1741 | } | |
1742 | ||
1743 | static void __cmd_replay(void) | |
1744 | { | |
1745 | unsigned long i; | |
1746 | ||
1747 | calibrate_run_measurement_overhead(); | |
1748 | calibrate_sleep_measurement_overhead(); | |
1749 | ||
1750 | test_calibrations(); | |
1751 | ||
1752 | read_events(); | |
1753 | ||
1754 | printf("nr_run_events: %ld\n", nr_run_events); | |
1755 | printf("nr_sleep_events: %ld\n", nr_sleep_events); | |
1756 | printf("nr_wakeup_events: %ld\n", nr_wakeup_events); | |
1757 | ||
1758 | if (targetless_wakeups) | |
1759 | printf("target-less wakeups: %ld\n", targetless_wakeups); | |
1760 | if (multitarget_wakeups) | |
1761 | printf("multi-target wakeups: %ld\n", multitarget_wakeups); | |
1762 | if (nr_run_events_optimized) | |
1763 | printf("run atoms optimized: %ld\n", | |
1764 | nr_run_events_optimized); | |
1765 | ||
1766 | print_task_traces(); | |
1767 | add_cross_task_wakeups(); | |
1768 | ||
1769 | create_tasks(); | |
1770 | printf("------------------------------------------------------------\n"); | |
1771 | for (i = 0; i < replay_repeat; i++) | |
1772 | run_one_test(); | |
1773 | } | |
1774 | ||
1775 | ||
46f392c9 | 1776 | static const char * const sched_usage[] = { |
4b77a729 | 1777 | "perf sched [<options>] {record|latency|map|replay|trace}", |
0a02ad93 IM |
1778 | NULL |
1779 | }; | |
1780 | ||
f2858d8a | 1781 | static const struct option sched_options[] = { |
4b77a729 MG |
1782 | OPT_STRING('i', "input", &input_name, "file", |
1783 | "input file name"), | |
c0555642 | 1784 | OPT_INCR('v', "verbose", &verbose, |
f2858d8a | 1785 | "be more verbose (show symbol address, etc)"), |
0a02ad93 IM |
1786 | OPT_BOOLEAN('D', "dump-raw-trace", &dump_trace, |
1787 | "dump raw trace in ASCII"), | |
f2858d8a IM |
1788 | OPT_END() |
1789 | }; | |
1790 | ||
1791 | static const char * const latency_usage[] = { | |
1792 | "perf sched latency [<options>]", | |
1793 | NULL | |
1794 | }; | |
1795 | ||
1796 | static const struct option latency_options[] = { | |
daa1d7a5 FW |
1797 | OPT_STRING('s', "sort", &sort_order, "key[,key2...]", |
1798 | "sort by key(s): runtime, switch, avg, max"), | |
c0555642 | 1799 | OPT_INCR('v', "verbose", &verbose, |
0a02ad93 | 1800 | "be more verbose (show symbol address, etc)"), |
55ffb7a6 MG |
1801 | OPT_INTEGER('C', "CPU", &profile_cpu, |
1802 | "CPU to profile on"), | |
f2858d8a IM |
1803 | OPT_BOOLEAN('D', "dump-raw-trace", &dump_trace, |
1804 | "dump raw trace in ASCII"), | |
1805 | OPT_END() | |
1806 | }; | |
1807 | ||
1808 | static const char * const replay_usage[] = { | |
1809 | "perf sched replay [<options>]", | |
1810 | NULL | |
1811 | }; | |
1812 | ||
1813 | static const struct option replay_options[] = { | |
1967936d ACM |
1814 | OPT_UINTEGER('r', "repeat", &replay_repeat, |
1815 | "repeat the workload replay N times (-1: infinite)"), | |
c0555642 | 1816 | OPT_INCR('v', "verbose", &verbose, |
f2858d8a IM |
1817 | "be more verbose (show symbol address, etc)"), |
1818 | OPT_BOOLEAN('D', "dump-raw-trace", &dump_trace, | |
1819 | "dump raw trace in ASCII"), | |
0a02ad93 IM |
1820 | OPT_END() |
1821 | }; | |
1822 | ||
daa1d7a5 FW |
1823 | static void setup_sorting(void) |
1824 | { | |
1825 | char *tmp, *tok, *str = strdup(sort_order); | |
1826 | ||
1827 | for (tok = strtok_r(str, ", ", &tmp); | |
1828 | tok; tok = strtok_r(NULL, ", ", &tmp)) { | |
1829 | if (sort_dimension__add(tok, &sort_list) < 0) { | |
1830 | error("Unknown --sort key: `%s'", tok); | |
f2858d8a | 1831 | usage_with_options(latency_usage, latency_options); |
daa1d7a5 FW |
1832 | } |
1833 | } | |
1834 | ||
1835 | free(str); | |
1836 | ||
cbef79a8 | 1837 | sort_dimension__add("pid", &cmp_pid); |
daa1d7a5 FW |
1838 | } |
1839 | ||
1fc35b29 IM |
1840 | static const char *record_args[] = { |
1841 | "record", | |
1842 | "-a", | |
1843 | "-R", | |
ea57c4f5 | 1844 | "-f", |
dc02bf71 | 1845 | "-m", "1024", |
1fc35b29 | 1846 | "-c", "1", |
9710118b SE |
1847 | "-e", "sched:sched_switch", |
1848 | "-e", "sched:sched_stat_wait", | |
1849 | "-e", "sched:sched_stat_sleep", | |
1850 | "-e", "sched:sched_stat_iowait", | |
1851 | "-e", "sched:sched_stat_runtime", | |
1852 | "-e", "sched:sched_process_exit", | |
1853 | "-e", "sched:sched_process_fork", | |
1854 | "-e", "sched:sched_wakeup", | |
1855 | "-e", "sched:sched_migrate_task", | |
1fc35b29 IM |
1856 | }; |
1857 | ||
1858 | static int __cmd_record(int argc, const char **argv) | |
1859 | { | |
1860 | unsigned int rec_argc, i, j; | |
1861 | const char **rec_argv; | |
1862 | ||
1863 | rec_argc = ARRAY_SIZE(record_args) + argc - 1; | |
1864 | rec_argv = calloc(rec_argc + 1, sizeof(char *)); | |
1865 | ||
e462dc55 | 1866 | if (rec_argv == NULL) |
ce47dc56 CS |
1867 | return -ENOMEM; |
1868 | ||
1fc35b29 IM |
1869 | for (i = 0; i < ARRAY_SIZE(record_args); i++) |
1870 | rec_argv[i] = strdup(record_args[i]); | |
1871 | ||
1872 | for (j = 1; j < (unsigned int)argc; j++, i++) | |
1873 | rec_argv[i] = argv[j]; | |
1874 | ||
1875 | BUG_ON(i != rec_argc); | |
1876 | ||
1877 | return cmd_record(i, rec_argv, NULL); | |
1878 | } | |
1879 | ||
0a02ad93 IM |
1880 | int cmd_sched(int argc, const char **argv, const char *prefix __used) |
1881 | { | |
f2858d8a IM |
1882 | argc = parse_options(argc, argv, sched_options, sched_usage, |
1883 | PARSE_OPT_STOP_AT_NON_OPTION); | |
1884 | if (!argc) | |
1885 | usage_with_options(sched_usage, sched_options); | |
0a02ad93 | 1886 | |
c0777c5a | 1887 | /* |
133dc4c3 | 1888 | * Aliased to 'perf script' for now: |
c0777c5a | 1889 | */ |
133dc4c3 IM |
1890 | if (!strcmp(argv[0], "script")) |
1891 | return cmd_script(argc, argv, prefix); | |
c0777c5a | 1892 | |
75be6cf4 | 1893 | symbol__init(); |
1fc35b29 IM |
1894 | if (!strncmp(argv[0], "rec", 3)) { |
1895 | return __cmd_record(argc, argv); | |
1896 | } else if (!strncmp(argv[0], "lat", 3)) { | |
cdce9d73 | 1897 | trace_handler = &lat_ops; |
f2858d8a IM |
1898 | if (argc > 1) { |
1899 | argc = parse_options(argc, argv, latency_options, latency_usage, 0); | |
1900 | if (argc) | |
1901 | usage_with_options(latency_usage, latency_options); | |
f2858d8a | 1902 | } |
b5fae128 | 1903 | setup_sorting(); |
46f392c9 | 1904 | __cmd_lat(); |
0ec04e16 IM |
1905 | } else if (!strcmp(argv[0], "map")) { |
1906 | trace_handler = &map_ops; | |
1907 | setup_sorting(); | |
1908 | __cmd_map(); | |
f2858d8a IM |
1909 | } else if (!strncmp(argv[0], "rep", 3)) { |
1910 | trace_handler = &replay_ops; | |
1911 | if (argc) { | |
1912 | argc = parse_options(argc, argv, replay_options, replay_usage, 0); | |
1913 | if (argc) | |
1914 | usage_with_options(replay_usage, replay_options); | |
1915 | } | |
1916 | __cmd_replay(); | |
1917 | } else { | |
1918 | usage_with_options(sched_usage, sched_options); | |
1919 | } | |
1920 | ||
ec156764 | 1921 | return 0; |
0a02ad93 | 1922 | } |