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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" | |
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 | ||
ad236fd2 | 196 | printf("run measurement overhead: %Ld 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 | ||
ad236fd2 | 214 | printf("sleep measurement overhead: %Ld 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); | |
492 | err = pthread_attr_setstacksize(&attr, (size_t)(16*1024)); | |
493 | BUG_ON(err); | |
494 | err = pthread_mutex_lock(&start_work_mutex); | |
495 | BUG_ON(err); | |
496 | err = pthread_mutex_lock(&work_done_wait_mutex); | |
497 | BUG_ON(err); | |
498 | for (i = 0; i < nr_tasks; i++) { | |
499 | task = tasks[i]; | |
500 | sem_init(&task->sleep_sem, 0, 0); | |
501 | sem_init(&task->ready_for_work, 0, 0); | |
502 | sem_init(&task->work_done_sem, 0, 0); | |
503 | task->curr_event = 0; | |
504 | err = pthread_create(&task->thread, &attr, thread_func, task); | |
505 | BUG_ON(err); | |
506 | } | |
507 | } | |
508 | ||
ec156764 IM |
509 | static void wait_for_tasks(void) |
510 | { | |
b1ffe8f3 | 511 | u64 cpu_usage_0, cpu_usage_1; |
ec156764 IM |
512 | struct task_desc *task; |
513 | unsigned long i, ret; | |
514 | ||
ec156764 | 515 | start_time = get_nsecs(); |
ec156764 IM |
516 | cpu_usage = 0; |
517 | pthread_mutex_unlock(&work_done_wait_mutex); | |
518 | ||
519 | for (i = 0; i < nr_tasks; i++) { | |
520 | task = tasks[i]; | |
521 | ret = sem_wait(&task->ready_for_work); | |
522 | BUG_ON(ret); | |
523 | sem_init(&task->ready_for_work, 0, 0); | |
524 | } | |
525 | ret = pthread_mutex_lock(&work_done_wait_mutex); | |
526 | BUG_ON(ret); | |
527 | ||
528 | cpu_usage_0 = get_cpu_usage_nsec_parent(); | |
529 | ||
530 | pthread_mutex_unlock(&start_work_mutex); | |
531 | ||
ec156764 IM |
532 | for (i = 0; i < nr_tasks; i++) { |
533 | task = tasks[i]; | |
534 | ret = sem_wait(&task->work_done_sem); | |
535 | BUG_ON(ret); | |
536 | sem_init(&task->work_done_sem, 0, 0); | |
537 | cpu_usage += task->cpu_usage; | |
538 | task->cpu_usage = 0; | |
539 | } | |
540 | ||
541 | cpu_usage_1 = get_cpu_usage_nsec_parent(); | |
542 | if (!runavg_cpu_usage) | |
543 | runavg_cpu_usage = cpu_usage; | |
544 | runavg_cpu_usage = (runavg_cpu_usage*9 + cpu_usage)/10; | |
545 | ||
546 | parent_cpu_usage = cpu_usage_1 - cpu_usage_0; | |
547 | if (!runavg_parent_cpu_usage) | |
548 | runavg_parent_cpu_usage = parent_cpu_usage; | |
549 | runavg_parent_cpu_usage = (runavg_parent_cpu_usage*9 + | |
550 | parent_cpu_usage)/10; | |
551 | ||
552 | ret = pthread_mutex_lock(&start_work_mutex); | |
553 | BUG_ON(ret); | |
554 | ||
555 | for (i = 0; i < nr_tasks; i++) { | |
556 | task = tasks[i]; | |
557 | sem_init(&task->sleep_sem, 0, 0); | |
558 | task->curr_event = 0; | |
559 | } | |
560 | } | |
561 | ||
ec156764 IM |
562 | static void run_one_test(void) |
563 | { | |
b1ffe8f3 | 564 | u64 T0, T1, delta, avg_delta, fluct, std_dev; |
ec156764 IM |
565 | |
566 | T0 = get_nsecs(); | |
567 | wait_for_tasks(); | |
568 | T1 = get_nsecs(); | |
569 | ||
570 | delta = T1 - T0; | |
571 | sum_runtime += delta; | |
572 | nr_runs++; | |
573 | ||
574 | avg_delta = sum_runtime / nr_runs; | |
575 | if (delta < avg_delta) | |
576 | fluct = avg_delta - delta; | |
577 | else | |
578 | fluct = delta - avg_delta; | |
579 | sum_fluct += fluct; | |
580 | std_dev = sum_fluct / nr_runs / sqrt(nr_runs); | |
581 | if (!run_avg) | |
582 | run_avg = delta; | |
583 | run_avg = (run_avg*9 + delta)/10; | |
584 | ||
ad236fd2 | 585 | printf("#%-3ld: %0.3f, ", |
ec156764 IM |
586 | nr_runs, (double)delta/1000000.0); |
587 | ||
ad236fd2 | 588 | printf("ravg: %0.2f, ", |
ec156764 IM |
589 | (double)run_avg/1e6); |
590 | ||
ad236fd2 | 591 | printf("cpu: %0.2f / %0.2f", |
ec156764 IM |
592 | (double)cpu_usage/1e6, (double)runavg_cpu_usage/1e6); |
593 | ||
594 | #if 0 | |
595 | /* | |
fbf94829 IM |
596 | * rusage statistics done by the parent, these are less |
597 | * accurate than the sum_exec_runtime based statistics: | |
598 | */ | |
ad236fd2 | 599 | printf(" [%0.2f / %0.2f]", |
ec156764 IM |
600 | (double)parent_cpu_usage/1e6, |
601 | (double)runavg_parent_cpu_usage/1e6); | |
602 | #endif | |
603 | ||
ad236fd2 | 604 | printf("\n"); |
ec156764 IM |
605 | |
606 | if (nr_sleep_corrections) | |
ad236fd2 | 607 | printf(" (%ld sleep corrections)\n", nr_sleep_corrections); |
ec156764 IM |
608 | nr_sleep_corrections = 0; |
609 | } | |
610 | ||
611 | static void test_calibrations(void) | |
612 | { | |
b1ffe8f3 | 613 | u64 T0, T1; |
ec156764 IM |
614 | |
615 | T0 = get_nsecs(); | |
616 | burn_nsecs(1e6); | |
617 | T1 = get_nsecs(); | |
618 | ||
ad236fd2 | 619 | printf("the run test took %Ld nsecs\n", T1-T0); |
ec156764 IM |
620 | |
621 | T0 = get_nsecs(); | |
622 | sleep_nsecs(1e6); | |
623 | T1 = get_nsecs(); | |
624 | ||
ad236fd2 | 625 | printf("the sleep test took %Ld nsecs\n", T1-T0); |
ec156764 IM |
626 | } |
627 | ||
46538818 FW |
628 | #define FILL_FIELD(ptr, field, event, data) \ |
629 | ptr.field = (typeof(ptr.field)) raw_field_value(event, #field, data) | |
630 | ||
631 | #define FILL_ARRAY(ptr, array, event, data) \ | |
632 | do { \ | |
633 | void *__array = raw_field_ptr(event, #array, data); \ | |
634 | memcpy(ptr.array, __array, sizeof(ptr.array)); \ | |
635 | } while(0) | |
636 | ||
637 | #define FILL_COMMON_FIELDS(ptr, event, data) \ | |
638 | do { \ | |
639 | FILL_FIELD(ptr, common_type, event, data); \ | |
640 | FILL_FIELD(ptr, common_flags, event, data); \ | |
641 | FILL_FIELD(ptr, common_preempt_count, event, data); \ | |
642 | FILL_FIELD(ptr, common_pid, event, data); \ | |
643 | FILL_FIELD(ptr, common_tgid, event, data); \ | |
644 | } while (0) | |
645 | ||
419ab0d6 FW |
646 | |
647 | ||
648 | struct trace_switch_event { | |
649 | u32 size; | |
650 | ||
651 | u16 common_type; | |
652 | u8 common_flags; | |
653 | u8 common_preempt_count; | |
654 | u32 common_pid; | |
655 | u32 common_tgid; | |
656 | ||
657 | char prev_comm[16]; | |
658 | u32 prev_pid; | |
659 | u32 prev_prio; | |
660 | u64 prev_state; | |
661 | char next_comm[16]; | |
662 | u32 next_pid; | |
663 | u32 next_prio; | |
664 | }; | |
665 | ||
39aeb52f | 666 | struct trace_runtime_event { |
667 | u32 size; | |
668 | ||
669 | u16 common_type; | |
670 | u8 common_flags; | |
671 | u8 common_preempt_count; | |
672 | u32 common_pid; | |
673 | u32 common_tgid; | |
674 | ||
675 | char comm[16]; | |
676 | u32 pid; | |
677 | u64 runtime; | |
678 | u64 vruntime; | |
679 | }; | |
419ab0d6 | 680 | |
fbf94829 IM |
681 | struct trace_wakeup_event { |
682 | u32 size; | |
683 | ||
684 | u16 common_type; | |
685 | u8 common_flags; | |
686 | u8 common_preempt_count; | |
687 | u32 common_pid; | |
688 | u32 common_tgid; | |
689 | ||
690 | char comm[16]; | |
691 | u32 pid; | |
692 | ||
693 | u32 prio; | |
694 | u32 success; | |
695 | u32 cpu; | |
696 | }; | |
697 | ||
419ab0d6 FW |
698 | struct trace_fork_event { |
699 | u32 size; | |
46538818 | 700 | |
419ab0d6 FW |
701 | u16 common_type; |
702 | u8 common_flags; | |
703 | u8 common_preempt_count; | |
704 | u32 common_pid; | |
705 | u32 common_tgid; | |
706 | ||
707 | char parent_comm[16]; | |
708 | u32 parent_pid; | |
709 | char child_comm[16]; | |
710 | u32 child_pid; | |
711 | }; | |
712 | ||
55ffb7a6 MG |
713 | struct trace_migrate_task_event { |
714 | u32 size; | |
715 | ||
716 | u16 common_type; | |
717 | u8 common_flags; | |
718 | u8 common_preempt_count; | |
719 | u32 common_pid; | |
720 | u32 common_tgid; | |
721 | ||
722 | char comm[16]; | |
723 | u32 pid; | |
724 | ||
725 | u32 prio; | |
726 | u32 cpu; | |
727 | }; | |
728 | ||
419ab0d6 FW |
729 | struct trace_sched_handler { |
730 | void (*switch_event)(struct trace_switch_event *, | |
b3165f41 | 731 | struct perf_session *, |
419ab0d6 FW |
732 | struct event *, |
733 | int cpu, | |
734 | u64 timestamp, | |
735 | struct thread *thread); | |
736 | ||
39aeb52f | 737 | void (*runtime_event)(struct trace_runtime_event *, |
b3165f41 | 738 | struct perf_session *, |
39aeb52f | 739 | struct event *, |
740 | int cpu, | |
741 | u64 timestamp, | |
742 | struct thread *thread); | |
743 | ||
419ab0d6 | 744 | void (*wakeup_event)(struct trace_wakeup_event *, |
b3165f41 | 745 | struct perf_session *, |
419ab0d6 FW |
746 | struct event *, |
747 | int cpu, | |
748 | u64 timestamp, | |
749 | struct thread *thread); | |
750 | ||
751 | void (*fork_event)(struct trace_fork_event *, | |
752 | struct event *, | |
753 | int cpu, | |
754 | u64 timestamp, | |
755 | struct thread *thread); | |
55ffb7a6 MG |
756 | |
757 | void (*migrate_task_event)(struct trace_migrate_task_event *, | |
b3165f41 | 758 | struct perf_session *session, |
55ffb7a6 MG |
759 | struct event *, |
760 | int cpu, | |
761 | u64 timestamp, | |
762 | struct thread *thread); | |
419ab0d6 | 763 | }; |
46538818 | 764 | |
46538818 | 765 | |
419ab0d6 FW |
766 | static void |
767 | replay_wakeup_event(struct trace_wakeup_event *wakeup_event, | |
b3165f41 | 768 | struct perf_session *session __used, |
419ab0d6 FW |
769 | struct event *event, |
770 | int cpu __used, | |
771 | u64 timestamp __used, | |
772 | struct thread *thread __used) | |
773 | { | |
774 | struct task_desc *waker, *wakee; | |
fbf94829 | 775 | |
ad236fd2 IM |
776 | if (verbose) { |
777 | printf("sched_wakeup event %p\n", event); | |
fbf94829 | 778 | |
ad236fd2 | 779 | printf(" ... pid %d woke up %s/%d\n", |
419ab0d6 FW |
780 | wakeup_event->common_pid, |
781 | wakeup_event->comm, | |
782 | wakeup_event->pid); | |
ad236fd2 | 783 | } |
fbf94829 | 784 | |
419ab0d6 FW |
785 | waker = register_pid(wakeup_event->common_pid, "<unknown>"); |
786 | wakee = register_pid(wakeup_event->pid, wakeup_event->comm); | |
fbf94829 IM |
787 | |
788 | add_sched_event_wakeup(waker, timestamp, wakee); | |
ec156764 IM |
789 | } |
790 | ||
d1153389 | 791 | static u64 cpu_last_switched[MAX_CPUS]; |
fbf94829 IM |
792 | |
793 | static void | |
419ab0d6 | 794 | replay_switch_event(struct trace_switch_event *switch_event, |
b3165f41 | 795 | struct perf_session *session __used, |
419ab0d6 FW |
796 | struct event *event, |
797 | int cpu, | |
798 | u64 timestamp, | |
799 | struct thread *thread __used) | |
ec156764 | 800 | { |
fbf94829 IM |
801 | struct task_desc *prev, *next; |
802 | u64 timestamp0; | |
803 | s64 delta; | |
804 | ||
ad236fd2 IM |
805 | if (verbose) |
806 | printf("sched_switch event %p\n", event); | |
807 | ||
fbf94829 IM |
808 | if (cpu >= MAX_CPUS || cpu < 0) |
809 | return; | |
810 | ||
811 | timestamp0 = cpu_last_switched[cpu]; | |
812 | if (timestamp0) | |
813 | delta = timestamp - timestamp0; | |
814 | else | |
815 | delta = 0; | |
816 | ||
817 | if (delta < 0) | |
818 | die("hm, delta: %Ld < 0 ?\n", delta); | |
819 | ||
ad236fd2 IM |
820 | if (verbose) { |
821 | printf(" ... switch from %s/%d to %s/%d [ran %Ld nsecs]\n", | |
419ab0d6 FW |
822 | switch_event->prev_comm, switch_event->prev_pid, |
823 | switch_event->next_comm, switch_event->next_pid, | |
ad236fd2 IM |
824 | delta); |
825 | } | |
fbf94829 | 826 | |
419ab0d6 FW |
827 | prev = register_pid(switch_event->prev_pid, switch_event->prev_comm); |
828 | next = register_pid(switch_event->next_pid, switch_event->next_comm); | |
fbf94829 IM |
829 | |
830 | cpu_last_switched[cpu] = timestamp; | |
831 | ||
832 | add_sched_event_run(prev, timestamp, delta); | |
419ab0d6 | 833 | add_sched_event_sleep(prev, timestamp, switch_event->prev_state); |
fbf94829 IM |
834 | } |
835 | ||
fbf94829 | 836 | |
419ab0d6 FW |
837 | static void |
838 | replay_fork_event(struct trace_fork_event *fork_event, | |
839 | struct event *event, | |
840 | int cpu __used, | |
841 | u64 timestamp __used, | |
842 | struct thread *thread __used) | |
843 | { | |
844 | if (verbose) { | |
845 | printf("sched_fork event %p\n", event); | |
846 | printf("... parent: %s/%d\n", fork_event->parent_comm, fork_event->parent_pid); | |
847 | printf("... child: %s/%d\n", fork_event->child_comm, fork_event->child_pid); | |
848 | } | |
849 | register_pid(fork_event->parent_pid, fork_event->parent_comm); | |
850 | register_pid(fork_event->child_pid, fork_event->child_comm); | |
851 | } | |
fbf94829 | 852 | |
419ab0d6 | 853 | static struct trace_sched_handler replay_ops = { |
ea92ed5a IM |
854 | .wakeup_event = replay_wakeup_event, |
855 | .switch_event = replay_switch_event, | |
856 | .fork_event = replay_fork_event, | |
fbf94829 IM |
857 | }; |
858 | ||
b1ffe8f3 IM |
859 | struct sort_dimension { |
860 | const char *name; | |
b5fae128 | 861 | sort_fn_t cmp; |
b1ffe8f3 IM |
862 | struct list_head list; |
863 | }; | |
864 | ||
865 | static LIST_HEAD(cmp_pid); | |
866 | ||
daa1d7a5 | 867 | static int |
39aeb52f | 868 | thread_lat_cmp(struct list_head *list, struct work_atoms *l, struct work_atoms *r) |
daa1d7a5 FW |
869 | { |
870 | struct sort_dimension *sort; | |
871 | int ret = 0; | |
872 | ||
b5fae128 IM |
873 | BUG_ON(list_empty(list)); |
874 | ||
daa1d7a5 FW |
875 | list_for_each_entry(sort, list, list) { |
876 | ret = sort->cmp(l, r); | |
877 | if (ret) | |
878 | return ret; | |
879 | } | |
880 | ||
881 | return ret; | |
882 | } | |
883 | ||
39aeb52f | 884 | static struct work_atoms * |
b5fae128 IM |
885 | thread_atoms_search(struct rb_root *root, struct thread *thread, |
886 | struct list_head *sort_list) | |
887 | { | |
888 | struct rb_node *node = root->rb_node; | |
39aeb52f | 889 | struct work_atoms key = { .thread = thread }; |
b5fae128 IM |
890 | |
891 | while (node) { | |
39aeb52f | 892 | struct work_atoms *atoms; |
b5fae128 IM |
893 | int cmp; |
894 | ||
39aeb52f | 895 | atoms = container_of(node, struct work_atoms, node); |
b5fae128 IM |
896 | |
897 | cmp = thread_lat_cmp(sort_list, &key, atoms); | |
898 | if (cmp > 0) | |
899 | node = node->rb_left; | |
900 | else if (cmp < 0) | |
901 | node = node->rb_right; | |
902 | else { | |
903 | BUG_ON(thread != atoms->thread); | |
904 | return atoms; | |
905 | } | |
906 | } | |
907 | return NULL; | |
908 | } | |
909 | ||
cdce9d73 | 910 | static void |
39aeb52f | 911 | __thread_latency_insert(struct rb_root *root, struct work_atoms *data, |
daa1d7a5 | 912 | struct list_head *sort_list) |
cdce9d73 FW |
913 | { |
914 | struct rb_node **new = &(root->rb_node), *parent = NULL; | |
915 | ||
916 | while (*new) { | |
39aeb52f | 917 | struct work_atoms *this; |
daa1d7a5 | 918 | int cmp; |
cdce9d73 | 919 | |
39aeb52f | 920 | this = container_of(*new, struct work_atoms, node); |
cdce9d73 | 921 | parent = *new; |
daa1d7a5 FW |
922 | |
923 | cmp = thread_lat_cmp(sort_list, data, this); | |
924 | ||
925 | if (cmp > 0) | |
cdce9d73 | 926 | new = &((*new)->rb_left); |
cdce9d73 | 927 | else |
daa1d7a5 | 928 | new = &((*new)->rb_right); |
cdce9d73 FW |
929 | } |
930 | ||
931 | rb_link_node(&data->node, parent, new); | |
932 | rb_insert_color(&data->node, root); | |
933 | } | |
934 | ||
b1ffe8f3 | 935 | static void thread_atoms_insert(struct thread *thread) |
cdce9d73 | 936 | { |
36479484 | 937 | struct work_atoms *atoms = zalloc(sizeof(*atoms)); |
17562205 | 938 | if (!atoms) |
cdce9d73 FW |
939 | die("No memory"); |
940 | ||
17562205 | 941 | atoms->thread = thread; |
39aeb52f | 942 | INIT_LIST_HEAD(&atoms->work_list); |
b1ffe8f3 | 943 | __thread_latency_insert(&atom_root, atoms, &cmp_pid); |
cdce9d73 FW |
944 | } |
945 | ||
946 | static void | |
947 | latency_fork_event(struct trace_fork_event *fork_event __used, | |
948 | struct event *event __used, | |
949 | int cpu __used, | |
950 | u64 timestamp __used, | |
951 | struct thread *thread __used) | |
952 | { | |
953 | /* should insert the newcomer */ | |
954 | } | |
955 | ||
ea92ed5a | 956 | __used |
cdce9d73 FW |
957 | static char sched_out_state(struct trace_switch_event *switch_event) |
958 | { | |
959 | const char *str = TASK_STATE_TO_CHAR_STR; | |
960 | ||
961 | return str[switch_event->prev_state]; | |
962 | } | |
963 | ||
964 | static void | |
39aeb52f | 965 | add_sched_out_event(struct work_atoms *atoms, |
966 | char run_state, | |
967 | u64 timestamp) | |
cdce9d73 | 968 | { |
36479484 | 969 | struct work_atom *atom = zalloc(sizeof(*atom)); |
b1ffe8f3 | 970 | if (!atom) |
cdce9d73 FW |
971 | die("Non memory"); |
972 | ||
aa1ab9d2 FW |
973 | atom->sched_out_time = timestamp; |
974 | ||
39aeb52f | 975 | if (run_state == 'R') { |
b1ffe8f3 | 976 | atom->state = THREAD_WAIT_CPU; |
aa1ab9d2 | 977 | atom->wake_up_time = atom->sched_out_time; |
c6ced611 FW |
978 | } |
979 | ||
39aeb52f | 980 | list_add_tail(&atom->list, &atoms->work_list); |
cdce9d73 FW |
981 | } |
982 | ||
983 | static void | |
39aeb52f | 984 | add_runtime_event(struct work_atoms *atoms, u64 delta, u64 timestamp __used) |
985 | { | |
986 | struct work_atom *atom; | |
987 | ||
988 | BUG_ON(list_empty(&atoms->work_list)); | |
989 | ||
990 | atom = list_entry(atoms->work_list.prev, struct work_atom, list); | |
991 | ||
992 | atom->runtime += delta; | |
993 | atoms->total_runtime += delta; | |
994 | } | |
995 | ||
996 | static void | |
997 | add_sched_in_event(struct work_atoms *atoms, u64 timestamp) | |
cdce9d73 | 998 | { |
b1ffe8f3 | 999 | struct work_atom *atom; |
66685678 | 1000 | u64 delta; |
cdce9d73 | 1001 | |
39aeb52f | 1002 | if (list_empty(&atoms->work_list)) |
cdce9d73 FW |
1003 | return; |
1004 | ||
39aeb52f | 1005 | atom = list_entry(atoms->work_list.prev, struct work_atom, list); |
cdce9d73 | 1006 | |
b1ffe8f3 | 1007 | if (atom->state != THREAD_WAIT_CPU) |
cdce9d73 FW |
1008 | return; |
1009 | ||
b1ffe8f3 IM |
1010 | if (timestamp < atom->wake_up_time) { |
1011 | atom->state = THREAD_IGNORE; | |
cdce9d73 FW |
1012 | return; |
1013 | } | |
1014 | ||
b1ffe8f3 IM |
1015 | atom->state = THREAD_SCHED_IN; |
1016 | atom->sched_in_time = timestamp; | |
66685678 | 1017 | |
b1ffe8f3 | 1018 | delta = atom->sched_in_time - atom->wake_up_time; |
66685678 | 1019 | atoms->total_lat += delta; |
3786310a | 1020 | if (delta > atoms->max_lat) { |
66685678 | 1021 | atoms->max_lat = delta; |
3786310a FW |
1022 | atoms->max_lat_at = timestamp; |
1023 | } | |
66685678 | 1024 | atoms->nb_atoms++; |
cdce9d73 FW |
1025 | } |
1026 | ||
cdce9d73 FW |
1027 | static void |
1028 | latency_switch_event(struct trace_switch_event *switch_event, | |
b3165f41 | 1029 | struct perf_session *session, |
cdce9d73 | 1030 | struct event *event __used, |
ea92ed5a | 1031 | int cpu, |
cdce9d73 FW |
1032 | u64 timestamp, |
1033 | struct thread *thread __used) | |
1034 | { | |
39aeb52f | 1035 | struct work_atoms *out_events, *in_events; |
cdce9d73 | 1036 | struct thread *sched_out, *sched_in; |
ea92ed5a IM |
1037 | u64 timestamp0; |
1038 | s64 delta; | |
1039 | ||
39aeb52f | 1040 | BUG_ON(cpu >= MAX_CPUS || cpu < 0); |
ea92ed5a IM |
1041 | |
1042 | timestamp0 = cpu_last_switched[cpu]; | |
1043 | cpu_last_switched[cpu] = timestamp; | |
1044 | if (timestamp0) | |
1045 | delta = timestamp - timestamp0; | |
1046 | else | |
1047 | delta = 0; | |
1048 | ||
1049 | if (delta < 0) | |
1050 | die("hm, delta: %Ld < 0 ?\n", delta); | |
1051 | ||
cdce9d73 | 1052 | |
b3165f41 ACM |
1053 | sched_out = perf_session__findnew(session, switch_event->prev_pid); |
1054 | sched_in = perf_session__findnew(session, switch_event->next_pid); | |
cdce9d73 | 1055 | |
39aeb52f | 1056 | out_events = thread_atoms_search(&atom_root, sched_out, &cmp_pid); |
1057 | if (!out_events) { | |
1058 | thread_atoms_insert(sched_out); | |
1059 | out_events = thread_atoms_search(&atom_root, sched_out, &cmp_pid); | |
1060 | if (!out_events) | |
1061 | die("out-event: Internal tree error"); | |
1062 | } | |
1063 | add_sched_out_event(out_events, sched_out_state(switch_event), timestamp); | |
1064 | ||
1065 | in_events = thread_atoms_search(&atom_root, sched_in, &cmp_pid); | |
1066 | if (!in_events) { | |
b1ffe8f3 | 1067 | thread_atoms_insert(sched_in); |
39aeb52f | 1068 | in_events = thread_atoms_search(&atom_root, sched_in, &cmp_pid); |
1069 | if (!in_events) | |
1070 | die("in-event: Internal tree error"); | |
1071 | /* | |
1072 | * Take came in we have not heard about yet, | |
1073 | * add in an initial atom in runnable state: | |
1074 | */ | |
1075 | add_sched_out_event(in_events, 'R', timestamp); | |
cdce9d73 | 1076 | } |
39aeb52f | 1077 | add_sched_in_event(in_events, timestamp); |
1078 | } | |
cdce9d73 | 1079 | |
39aeb52f | 1080 | static void |
1081 | latency_runtime_event(struct trace_runtime_event *runtime_event, | |
b3165f41 | 1082 | struct perf_session *session, |
39aeb52f | 1083 | struct event *event __used, |
1084 | int cpu, | |
1085 | u64 timestamp, | |
1086 | struct thread *this_thread __used) | |
1087 | { | |
b3165f41 | 1088 | struct thread *thread = perf_session__findnew(session, runtime_event->pid); |
d5b889f2 | 1089 | struct work_atoms *atoms = thread_atoms_search(&atom_root, thread, &cmp_pid); |
39aeb52f | 1090 | |
1091 | BUG_ON(cpu >= MAX_CPUS || cpu < 0); | |
39aeb52f | 1092 | if (!atoms) { |
1093 | thread_atoms_insert(thread); | |
1094 | atoms = thread_atoms_search(&atom_root, thread, &cmp_pid); | |
1095 | if (!atoms) | |
1096 | die("in-event: Internal tree error"); | |
1097 | add_sched_out_event(atoms, 'R', timestamp); | |
cdce9d73 FW |
1098 | } |
1099 | ||
39aeb52f | 1100 | add_runtime_event(atoms, runtime_event->runtime, timestamp); |
cdce9d73 FW |
1101 | } |
1102 | ||
1103 | static void | |
1104 | latency_wakeup_event(struct trace_wakeup_event *wakeup_event, | |
b3165f41 | 1105 | struct perf_session *session, |
39aeb52f | 1106 | struct event *__event __used, |
cdce9d73 FW |
1107 | int cpu __used, |
1108 | u64 timestamp, | |
1109 | struct thread *thread __used) | |
1110 | { | |
39aeb52f | 1111 | struct work_atoms *atoms; |
b1ffe8f3 | 1112 | struct work_atom *atom; |
cdce9d73 FW |
1113 | struct thread *wakee; |
1114 | ||
1115 | /* Note for later, it may be interesting to observe the failing cases */ | |
1116 | if (!wakeup_event->success) | |
1117 | return; | |
1118 | ||
b3165f41 | 1119 | wakee = perf_session__findnew(session, wakeup_event->pid); |
b5fae128 | 1120 | atoms = thread_atoms_search(&atom_root, wakee, &cmp_pid); |
17562205 | 1121 | if (!atoms) { |
b1ffe8f3 | 1122 | thread_atoms_insert(wakee); |
39aeb52f | 1123 | atoms = thread_atoms_search(&atom_root, wakee, &cmp_pid); |
1124 | if (!atoms) | |
1125 | die("wakeup-event: Internal tree error"); | |
1126 | add_sched_out_event(atoms, 'S', timestamp); | |
cdce9d73 FW |
1127 | } |
1128 | ||
39aeb52f | 1129 | BUG_ON(list_empty(&atoms->work_list)); |
cdce9d73 | 1130 | |
39aeb52f | 1131 | atom = list_entry(atoms->work_list.prev, struct work_atom, list); |
cdce9d73 | 1132 | |
55ffb7a6 MG |
1133 | /* |
1134 | * You WILL be missing events if you've recorded only | |
1135 | * one CPU, or are only looking at only one, so don't | |
1136 | * make useless noise. | |
1137 | */ | |
1138 | if (profile_cpu == -1 && atom->state != THREAD_SLEEPING) | |
dc02bf71 | 1139 | nr_state_machine_bugs++; |
cdce9d73 | 1140 | |
ea57c4f5 IM |
1141 | nr_timestamps++; |
1142 | if (atom->sched_out_time > timestamp) { | |
dc02bf71 | 1143 | nr_unordered_timestamps++; |
aa1ab9d2 | 1144 | return; |
ea57c4f5 | 1145 | } |
aa1ab9d2 | 1146 | |
b1ffe8f3 IM |
1147 | atom->state = THREAD_WAIT_CPU; |
1148 | atom->wake_up_time = timestamp; | |
cdce9d73 FW |
1149 | } |
1150 | ||
55ffb7a6 MG |
1151 | static void |
1152 | latency_migrate_task_event(struct trace_migrate_task_event *migrate_task_event, | |
b3165f41 | 1153 | struct perf_session *session, |
55ffb7a6 MG |
1154 | struct event *__event __used, |
1155 | int cpu __used, | |
1156 | u64 timestamp, | |
1157 | struct thread *thread __used) | |
1158 | { | |
1159 | struct work_atoms *atoms; | |
1160 | struct work_atom *atom; | |
1161 | struct thread *migrant; | |
1162 | ||
1163 | /* | |
1164 | * Only need to worry about migration when profiling one CPU. | |
1165 | */ | |
1166 | if (profile_cpu == -1) | |
1167 | return; | |
1168 | ||
b3165f41 | 1169 | migrant = perf_session__findnew(session, migrate_task_event->pid); |
55ffb7a6 MG |
1170 | atoms = thread_atoms_search(&atom_root, migrant, &cmp_pid); |
1171 | if (!atoms) { | |
1172 | thread_atoms_insert(migrant); | |
1173 | register_pid(migrant->pid, migrant->comm); | |
1174 | atoms = thread_atoms_search(&atom_root, migrant, &cmp_pid); | |
1175 | if (!atoms) | |
1176 | die("migration-event: Internal tree error"); | |
1177 | add_sched_out_event(atoms, 'R', timestamp); | |
1178 | } | |
1179 | ||
1180 | BUG_ON(list_empty(&atoms->work_list)); | |
1181 | ||
1182 | atom = list_entry(atoms->work_list.prev, struct work_atom, list); | |
1183 | atom->sched_in_time = atom->sched_out_time = atom->wake_up_time = timestamp; | |
1184 | ||
1185 | nr_timestamps++; | |
1186 | ||
1187 | if (atom->sched_out_time > timestamp) | |
1188 | nr_unordered_timestamps++; | |
1189 | } | |
1190 | ||
cdce9d73 | 1191 | static struct trace_sched_handler lat_ops = { |
ea92ed5a IM |
1192 | .wakeup_event = latency_wakeup_event, |
1193 | .switch_event = latency_switch_event, | |
39aeb52f | 1194 | .runtime_event = latency_runtime_event, |
ea92ed5a | 1195 | .fork_event = latency_fork_event, |
55ffb7a6 | 1196 | .migrate_task_event = latency_migrate_task_event, |
cdce9d73 FW |
1197 | }; |
1198 | ||
39aeb52f | 1199 | static void output_lat_thread(struct work_atoms *work_list) |
cdce9d73 | 1200 | { |
cdce9d73 FW |
1201 | int i; |
1202 | int ret; | |
66685678 | 1203 | u64 avg; |
cdce9d73 | 1204 | |
39aeb52f | 1205 | if (!work_list->nb_atoms) |
cdce9d73 | 1206 | return; |
ea57c4f5 IM |
1207 | /* |
1208 | * Ignore idle threads: | |
1209 | */ | |
80ed0987 | 1210 | if (!strcmp(work_list->thread->comm, "swapper")) |
ea57c4f5 | 1211 | return; |
cdce9d73 | 1212 | |
39aeb52f | 1213 | all_runtime += work_list->total_runtime; |
1214 | all_count += work_list->nb_atoms; | |
66685678 | 1215 | |
80ed0987 | 1216 | ret = printf(" %s:%d ", work_list->thread->comm, work_list->thread->pid); |
cdce9d73 | 1217 | |
08f69e6c | 1218 | for (i = 0; i < 24 - ret; i++) |
cdce9d73 FW |
1219 | printf(" "); |
1220 | ||
39aeb52f | 1221 | avg = work_list->total_lat / work_list->nb_atoms; |
cdce9d73 | 1222 | |
3786310a | 1223 | printf("|%11.3f ms |%9llu | avg:%9.3f ms | max:%9.3f ms | max at: %9.6f s\n", |
39aeb52f | 1224 | (double)work_list->total_runtime / 1e6, |
1225 | work_list->nb_atoms, (double)avg / 1e6, | |
3786310a FW |
1226 | (double)work_list->max_lat / 1e6, |
1227 | (double)work_list->max_lat_at / 1e9); | |
cdce9d73 FW |
1228 | } |
1229 | ||
39aeb52f | 1230 | static int pid_cmp(struct work_atoms *l, struct work_atoms *r) |
daa1d7a5 | 1231 | { |
daa1d7a5 FW |
1232 | if (l->thread->pid < r->thread->pid) |
1233 | return -1; | |
1234 | if (l->thread->pid > r->thread->pid) | |
1235 | return 1; | |
1236 | ||
1237 | return 0; | |
1238 | } | |
1239 | ||
1240 | static struct sort_dimension pid_sort_dimension = { | |
b5fae128 IM |
1241 | .name = "pid", |
1242 | .cmp = pid_cmp, | |
daa1d7a5 FW |
1243 | }; |
1244 | ||
39aeb52f | 1245 | static int avg_cmp(struct work_atoms *l, struct work_atoms *r) |
daa1d7a5 FW |
1246 | { |
1247 | u64 avgl, avgr; | |
1248 | ||
1249 | if (!l->nb_atoms) | |
1250 | return -1; | |
1251 | ||
1252 | if (!r->nb_atoms) | |
1253 | return 1; | |
1254 | ||
1255 | avgl = l->total_lat / l->nb_atoms; | |
1256 | avgr = r->total_lat / r->nb_atoms; | |
1257 | ||
1258 | if (avgl < avgr) | |
1259 | return -1; | |
1260 | if (avgl > avgr) | |
1261 | return 1; | |
1262 | ||
1263 | return 0; | |
1264 | } | |
1265 | ||
1266 | static struct sort_dimension avg_sort_dimension = { | |
b5fae128 IM |
1267 | .name = "avg", |
1268 | .cmp = avg_cmp, | |
daa1d7a5 FW |
1269 | }; |
1270 | ||
39aeb52f | 1271 | static int max_cmp(struct work_atoms *l, struct work_atoms *r) |
daa1d7a5 FW |
1272 | { |
1273 | if (l->max_lat < r->max_lat) | |
1274 | return -1; | |
1275 | if (l->max_lat > r->max_lat) | |
1276 | return 1; | |
1277 | ||
1278 | return 0; | |
1279 | } | |
1280 | ||
1281 | static struct sort_dimension max_sort_dimension = { | |
b5fae128 IM |
1282 | .name = "max", |
1283 | .cmp = max_cmp, | |
daa1d7a5 FW |
1284 | }; |
1285 | ||
39aeb52f | 1286 | static int switch_cmp(struct work_atoms *l, struct work_atoms *r) |
daa1d7a5 FW |
1287 | { |
1288 | if (l->nb_atoms < r->nb_atoms) | |
1289 | return -1; | |
1290 | if (l->nb_atoms > r->nb_atoms) | |
1291 | return 1; | |
1292 | ||
1293 | return 0; | |
1294 | } | |
1295 | ||
1296 | static struct sort_dimension switch_sort_dimension = { | |
b5fae128 IM |
1297 | .name = "switch", |
1298 | .cmp = switch_cmp, | |
daa1d7a5 FW |
1299 | }; |
1300 | ||
39aeb52f | 1301 | static int runtime_cmp(struct work_atoms *l, struct work_atoms *r) |
daa1d7a5 FW |
1302 | { |
1303 | if (l->total_runtime < r->total_runtime) | |
1304 | return -1; | |
1305 | if (l->total_runtime > r->total_runtime) | |
1306 | return 1; | |
1307 | ||
1308 | return 0; | |
1309 | } | |
1310 | ||
1311 | static struct sort_dimension runtime_sort_dimension = { | |
b5fae128 IM |
1312 | .name = "runtime", |
1313 | .cmp = runtime_cmp, | |
daa1d7a5 FW |
1314 | }; |
1315 | ||
1316 | static struct sort_dimension *available_sorts[] = { | |
1317 | &pid_sort_dimension, | |
1318 | &avg_sort_dimension, | |
1319 | &max_sort_dimension, | |
1320 | &switch_sort_dimension, | |
1321 | &runtime_sort_dimension, | |
1322 | }; | |
1323 | ||
1324 | #define NB_AVAILABLE_SORTS (int)(sizeof(available_sorts) / sizeof(struct sort_dimension *)) | |
1325 | ||
1326 | static LIST_HEAD(sort_list); | |
1327 | ||
cbef79a8 | 1328 | static int sort_dimension__add(const char *tok, struct list_head *list) |
daa1d7a5 FW |
1329 | { |
1330 | int i; | |
1331 | ||
1332 | for (i = 0; i < NB_AVAILABLE_SORTS; i++) { | |
1333 | if (!strcmp(available_sorts[i]->name, tok)) { | |
1334 | list_add_tail(&available_sorts[i]->list, list); | |
1335 | ||
1336 | return 0; | |
1337 | } | |
1338 | } | |
1339 | ||
1340 | return -1; | |
1341 | } | |
1342 | ||
1343 | static void setup_sorting(void); | |
1344 | ||
1345 | static void sort_lat(void) | |
1346 | { | |
1347 | struct rb_node *node; | |
1348 | ||
1349 | for (;;) { | |
39aeb52f | 1350 | struct work_atoms *data; |
b1ffe8f3 | 1351 | node = rb_first(&atom_root); |
daa1d7a5 FW |
1352 | if (!node) |
1353 | break; | |
1354 | ||
b1ffe8f3 | 1355 | rb_erase(node, &atom_root); |
39aeb52f | 1356 | data = rb_entry(node, struct work_atoms, node); |
b1ffe8f3 | 1357 | __thread_latency_insert(&sorted_atom_root, data, &sort_list); |
daa1d7a5 FW |
1358 | } |
1359 | } | |
1360 | ||
419ab0d6 FW |
1361 | static struct trace_sched_handler *trace_handler; |
1362 | ||
fbf94829 | 1363 | static void |
b3165f41 | 1364 | process_sched_wakeup_event(void *data, struct perf_session *session, |
419ab0d6 FW |
1365 | struct event *event, |
1366 | int cpu __used, | |
1367 | u64 timestamp __used, | |
1368 | struct thread *thread __used) | |
1369 | { | |
1370 | struct trace_wakeup_event wakeup_event; | |
1371 | ||
f48f669d | 1372 | FILL_COMMON_FIELDS(wakeup_event, event, data); |
419ab0d6 | 1373 | |
f48f669d XG |
1374 | FILL_ARRAY(wakeup_event, comm, event, data); |
1375 | FILL_FIELD(wakeup_event, pid, event, data); | |
1376 | FILL_FIELD(wakeup_event, prio, event, data); | |
1377 | FILL_FIELD(wakeup_event, success, event, data); | |
1378 | FILL_FIELD(wakeup_event, cpu, event, data); | |
419ab0d6 | 1379 | |
0ec04e16 | 1380 | if (trace_handler->wakeup_event) |
b3165f41 ACM |
1381 | trace_handler->wakeup_event(&wakeup_event, session, event, |
1382 | cpu, timestamp, thread); | |
419ab0d6 FW |
1383 | } |
1384 | ||
c8a37751 IM |
1385 | /* |
1386 | * Track the current task - that way we can know whether there's any | |
1387 | * weird events, such as a task being switched away that is not current. | |
1388 | */ | |
40749d0f | 1389 | static int max_cpu; |
0ec04e16 | 1390 | |
c8a37751 IM |
1391 | static u32 curr_pid[MAX_CPUS] = { [0 ... MAX_CPUS-1] = -1 }; |
1392 | ||
0ec04e16 IM |
1393 | static struct thread *curr_thread[MAX_CPUS]; |
1394 | ||
1395 | static char next_shortname1 = 'A'; | |
1396 | static char next_shortname2 = '0'; | |
1397 | ||
1398 | static void | |
1399 | map_switch_event(struct trace_switch_event *switch_event, | |
b3165f41 | 1400 | struct perf_session *session, |
0ec04e16 IM |
1401 | struct event *event __used, |
1402 | int this_cpu, | |
1403 | u64 timestamp, | |
1404 | struct thread *thread __used) | |
1405 | { | |
1406 | struct thread *sched_out, *sched_in; | |
1407 | int new_shortname; | |
1408 | u64 timestamp0; | |
1409 | s64 delta; | |
1410 | int cpu; | |
1411 | ||
1412 | BUG_ON(this_cpu >= MAX_CPUS || this_cpu < 0); | |
1413 | ||
1414 | if (this_cpu > max_cpu) | |
1415 | max_cpu = this_cpu; | |
1416 | ||
1417 | timestamp0 = cpu_last_switched[this_cpu]; | |
1418 | cpu_last_switched[this_cpu] = timestamp; | |
1419 | if (timestamp0) | |
1420 | delta = timestamp - timestamp0; | |
1421 | else | |
1422 | delta = 0; | |
1423 | ||
1424 | if (delta < 0) | |
1425 | die("hm, delta: %Ld < 0 ?\n", delta); | |
1426 | ||
1427 | ||
b3165f41 ACM |
1428 | sched_out = perf_session__findnew(session, switch_event->prev_pid); |
1429 | sched_in = perf_session__findnew(session, switch_event->next_pid); | |
0ec04e16 IM |
1430 | |
1431 | curr_thread[this_cpu] = sched_in; | |
1432 | ||
1433 | printf(" "); | |
1434 | ||
1435 | new_shortname = 0; | |
1436 | if (!sched_in->shortname[0]) { | |
1437 | sched_in->shortname[0] = next_shortname1; | |
1438 | sched_in->shortname[1] = next_shortname2; | |
1439 | ||
1440 | if (next_shortname1 < 'Z') { | |
1441 | next_shortname1++; | |
1442 | } else { | |
1443 | next_shortname1='A'; | |
1444 | if (next_shortname2 < '9') { | |
1445 | next_shortname2++; | |
1446 | } else { | |
1447 | next_shortname2='0'; | |
1448 | } | |
1449 | } | |
1450 | new_shortname = 1; | |
1451 | } | |
1452 | ||
1453 | for (cpu = 0; cpu <= max_cpu; cpu++) { | |
1454 | if (cpu != this_cpu) | |
1455 | printf(" "); | |
1456 | else | |
1457 | printf("*"); | |
1458 | ||
1459 | if (curr_thread[cpu]) { | |
1460 | if (curr_thread[cpu]->pid) | |
1461 | printf("%2s ", curr_thread[cpu]->shortname); | |
1462 | else | |
1463 | printf(". "); | |
1464 | } else | |
1465 | printf(" "); | |
1466 | } | |
1467 | ||
1468 | printf(" %12.6f secs ", (double)timestamp/1e9); | |
1469 | if (new_shortname) { | |
1470 | printf("%s => %s:%d\n", | |
1471 | sched_in->shortname, sched_in->comm, sched_in->pid); | |
1472 | } else { | |
1473 | printf("\n"); | |
1474 | } | |
1475 | } | |
1476 | ||
1477 | ||
419ab0d6 | 1478 | static void |
b3165f41 | 1479 | process_sched_switch_event(void *data, struct perf_session *session, |
419ab0d6 | 1480 | struct event *event, |
0ec04e16 | 1481 | int this_cpu, |
419ab0d6 FW |
1482 | u64 timestamp __used, |
1483 | struct thread *thread __used) | |
1484 | { | |
1485 | struct trace_switch_event switch_event; | |
1486 | ||
f48f669d | 1487 | FILL_COMMON_FIELDS(switch_event, event, data); |
419ab0d6 | 1488 | |
f48f669d XG |
1489 | FILL_ARRAY(switch_event, prev_comm, event, data); |
1490 | FILL_FIELD(switch_event, prev_pid, event, data); | |
1491 | FILL_FIELD(switch_event, prev_prio, event, data); | |
1492 | FILL_FIELD(switch_event, prev_state, event, data); | |
1493 | FILL_ARRAY(switch_event, next_comm, event, data); | |
1494 | FILL_FIELD(switch_event, next_pid, event, data); | |
1495 | FILL_FIELD(switch_event, next_prio, event, data); | |
419ab0d6 | 1496 | |
0ec04e16 | 1497 | if (curr_pid[this_cpu] != (u32)-1) { |
c8a37751 IM |
1498 | /* |
1499 | * Are we trying to switch away a PID that is | |
1500 | * not current? | |
1501 | */ | |
0ec04e16 | 1502 | if (curr_pid[this_cpu] != switch_event.prev_pid) |
c8a37751 IM |
1503 | nr_context_switch_bugs++; |
1504 | } | |
0ec04e16 | 1505 | if (trace_handler->switch_event) |
b3165f41 ACM |
1506 | trace_handler->switch_event(&switch_event, session, event, |
1507 | this_cpu, timestamp, thread); | |
c8a37751 | 1508 | |
0ec04e16 | 1509 | curr_pid[this_cpu] = switch_event.next_pid; |
419ab0d6 FW |
1510 | } |
1511 | ||
39aeb52f | 1512 | static void |
b3165f41 | 1513 | process_sched_runtime_event(void *data, struct perf_session *session, |
39aeb52f | 1514 | struct event *event, |
1515 | int cpu __used, | |
1516 | u64 timestamp __used, | |
1517 | struct thread *thread __used) | |
1518 | { | |
1519 | struct trace_runtime_event runtime_event; | |
1520 | ||
f48f669d XG |
1521 | FILL_ARRAY(runtime_event, comm, event, data); |
1522 | FILL_FIELD(runtime_event, pid, event, data); | |
1523 | FILL_FIELD(runtime_event, runtime, event, data); | |
1524 | FILL_FIELD(runtime_event, vruntime, event, data); | |
39aeb52f | 1525 | |
0ec04e16 | 1526 | if (trace_handler->runtime_event) |
b3165f41 | 1527 | trace_handler->runtime_event(&runtime_event, session, event, cpu, timestamp, thread); |
39aeb52f | 1528 | } |
1529 | ||
419ab0d6 | 1530 | static void |
f48f669d | 1531 | process_sched_fork_event(void *data, |
419ab0d6 FW |
1532 | struct event *event, |
1533 | int cpu __used, | |
1534 | u64 timestamp __used, | |
1535 | struct thread *thread __used) | |
fbf94829 | 1536 | { |
46538818 FW |
1537 | struct trace_fork_event fork_event; |
1538 | ||
f48f669d | 1539 | FILL_COMMON_FIELDS(fork_event, event, data); |
46538818 | 1540 | |
f48f669d XG |
1541 | FILL_ARRAY(fork_event, parent_comm, event, data); |
1542 | FILL_FIELD(fork_event, parent_pid, event, data); | |
1543 | FILL_ARRAY(fork_event, child_comm, event, data); | |
1544 | FILL_FIELD(fork_event, child_pid, event, data); | |
46538818 | 1545 | |
0ec04e16 | 1546 | if (trace_handler->fork_event) |
b3165f41 ACM |
1547 | trace_handler->fork_event(&fork_event, event, |
1548 | cpu, timestamp, thread); | |
fbf94829 IM |
1549 | } |
1550 | ||
419ab0d6 FW |
1551 | static void |
1552 | process_sched_exit_event(struct event *event, | |
1553 | int cpu __used, | |
1554 | u64 timestamp __used, | |
1555 | struct thread *thread __used) | |
fbf94829 | 1556 | { |
ad236fd2 IM |
1557 | if (verbose) |
1558 | printf("sched_exit event %p\n", event); | |
ec156764 IM |
1559 | } |
1560 | ||
55ffb7a6 | 1561 | static void |
b3165f41 | 1562 | process_sched_migrate_task_event(void *data, struct perf_session *session, |
55ffb7a6 MG |
1563 | struct event *event, |
1564 | int cpu __used, | |
1565 | u64 timestamp __used, | |
1566 | struct thread *thread __used) | |
1567 | { | |
1568 | struct trace_migrate_task_event migrate_task_event; | |
1569 | ||
f48f669d | 1570 | FILL_COMMON_FIELDS(migrate_task_event, event, data); |
55ffb7a6 | 1571 | |
f48f669d XG |
1572 | FILL_ARRAY(migrate_task_event, comm, event, data); |
1573 | FILL_FIELD(migrate_task_event, pid, event, data); | |
1574 | FILL_FIELD(migrate_task_event, prio, event, data); | |
1575 | FILL_FIELD(migrate_task_event, cpu, event, data); | |
55ffb7a6 MG |
1576 | |
1577 | if (trace_handler->migrate_task_event) | |
b3165f41 ACM |
1578 | trace_handler->migrate_task_event(&migrate_task_event, session, |
1579 | event, cpu, timestamp, thread); | |
55ffb7a6 MG |
1580 | } |
1581 | ||
ec156764 | 1582 | static void |
b3165f41 ACM |
1583 | process_raw_event(event_t *raw_event __used, struct perf_session *session, |
1584 | void *data, int cpu, u64 timestamp, struct thread *thread) | |
ec156764 | 1585 | { |
ec156764 IM |
1586 | struct event *event; |
1587 | int type; | |
1588 | ||
d8bd9e0a | 1589 | |
f48f669d | 1590 | type = trace_parse_common_type(data); |
ec156764 IM |
1591 | event = trace_find_event(type); |
1592 | ||
ec156764 | 1593 | if (!strcmp(event->name, "sched_switch")) |
b3165f41 | 1594 | process_sched_switch_event(data, session, event, cpu, timestamp, thread); |
39aeb52f | 1595 | if (!strcmp(event->name, "sched_stat_runtime")) |
b3165f41 | 1596 | process_sched_runtime_event(data, session, event, cpu, timestamp, thread); |
ec156764 | 1597 | if (!strcmp(event->name, "sched_wakeup")) |
b3165f41 | 1598 | process_sched_wakeup_event(data, session, event, cpu, timestamp, thread); |
fbf94829 | 1599 | if (!strcmp(event->name, "sched_wakeup_new")) |
b3165f41 | 1600 | process_sched_wakeup_event(data, session, event, cpu, timestamp, thread); |
fbf94829 | 1601 | if (!strcmp(event->name, "sched_process_fork")) |
f48f669d | 1602 | process_sched_fork_event(data, event, cpu, timestamp, thread); |
fbf94829 IM |
1603 | if (!strcmp(event->name, "sched_process_exit")) |
1604 | process_sched_exit_event(event, cpu, timestamp, thread); | |
55ffb7a6 | 1605 | if (!strcmp(event->name, "sched_migrate_task")) |
b3165f41 | 1606 | process_sched_migrate_task_event(data, session, event, cpu, timestamp, thread); |
ec156764 IM |
1607 | } |
1608 | ||
b3165f41 | 1609 | static int process_sample_event(event_t *event, struct perf_session *session) |
0a02ad93 | 1610 | { |
180f95e2 | 1611 | struct sample_data data; |
0a02ad93 | 1612 | struct thread *thread; |
a80deb62 | 1613 | |
c019879b | 1614 | if (!(session->sample_type & PERF_SAMPLE_RAW)) |
a80deb62 | 1615 | return 0; |
0a02ad93 | 1616 | |
180f95e2 OH |
1617 | memset(&data, 0, sizeof(data)); |
1618 | data.time = -1; | |
1619 | data.cpu = -1; | |
1620 | data.period = -1; | |
0a02ad93 | 1621 | |
c019879b | 1622 | event__parse_sample(event, session->sample_type, &data); |
0a02ad93 | 1623 | |
0d755034 ACM |
1624 | dump_printf("(IP, %d): %d/%d: %#Lx period: %Ld\n", event->header.misc, |
1625 | data.pid, data.tid, data.ip, data.period); | |
0a02ad93 | 1626 | |
b3165f41 | 1627 | thread = perf_session__findnew(session, data.pid); |
0a02ad93 | 1628 | if (thread == NULL) { |
6beba7ad ACM |
1629 | pr_debug("problem processing %d event, skipping it.\n", |
1630 | event->header.type); | |
0a02ad93 IM |
1631 | return -1; |
1632 | } | |
1633 | ||
f39cdf25 JL |
1634 | dump_printf(" ... thread: %s:%d\n", thread->comm, thread->pid); |
1635 | ||
180f95e2 | 1636 | if (profile_cpu != -1 && profile_cpu != (int)data.cpu) |
55ffb7a6 MG |
1637 | return 0; |
1638 | ||
b3165f41 | 1639 | process_raw_event(event, session, data.raw_data, data.cpu, data.time, thread); |
0a02ad93 IM |
1640 | |
1641 | return 0; | |
1642 | } | |
1643 | ||
301a0b02 | 1644 | static struct perf_event_ops event_ops = { |
a64eae70 FW |
1645 | .sample = process_sample_event, |
1646 | .comm = event__process_comm, | |
cee75ac7 | 1647 | .lost = event__process_lost, |
af64865b | 1648 | .fork = event__process_task, |
a64eae70 | 1649 | .ordered_samples = true, |
016e92fb FW |
1650 | }; |
1651 | ||
46f392c9 | 1652 | static int read_events(void) |
0a02ad93 | 1653 | { |
d549c769 | 1654 | int err = -EINVAL; |
454c407e | 1655 | struct perf_session *session = perf_session__new(input_name, O_RDONLY, 0, false); |
94c744b6 ACM |
1656 | if (session == NULL) |
1657 | return -ENOMEM; | |
1658 | ||
cee75ac7 | 1659 | if (perf_session__has_traces(session, "record -R")) { |
d549c769 | 1660 | err = perf_session__process_events(session, &event_ops); |
cee75ac7 ACM |
1661 | nr_events = session->hists.stats.nr_events[0]; |
1662 | nr_lost_events = session->hists.stats.total_lost; | |
1663 | nr_lost_chunks = session->hists.stats.nr_events[PERF_RECORD_LOST]; | |
1664 | } | |
d549c769 | 1665 | |
94c744b6 ACM |
1666 | perf_session__delete(session); |
1667 | return err; | |
0a02ad93 IM |
1668 | } |
1669 | ||
0ec04e16 IM |
1670 | static void print_bad_events(void) |
1671 | { | |
1672 | if (nr_unordered_timestamps && nr_timestamps) { | |
1673 | printf(" INFO: %.3f%% unordered timestamps (%ld out of %ld)\n", | |
1674 | (double)nr_unordered_timestamps/(double)nr_timestamps*100.0, | |
1675 | nr_unordered_timestamps, nr_timestamps); | |
1676 | } | |
1677 | if (nr_lost_events && nr_events) { | |
1678 | printf(" INFO: %.3f%% lost events (%ld out of %ld, in %ld chunks)\n", | |
1679 | (double)nr_lost_events/(double)nr_events*100.0, | |
1680 | nr_lost_events, nr_events, nr_lost_chunks); | |
1681 | } | |
1682 | if (nr_state_machine_bugs && nr_timestamps) { | |
1683 | printf(" INFO: %.3f%% state machine bugs (%ld out of %ld)", | |
1684 | (double)nr_state_machine_bugs/(double)nr_timestamps*100.0, | |
1685 | nr_state_machine_bugs, nr_timestamps); | |
1686 | if (nr_lost_events) | |
1687 | printf(" (due to lost events?)"); | |
1688 | printf("\n"); | |
1689 | } | |
1690 | if (nr_context_switch_bugs && nr_timestamps) { | |
1691 | printf(" INFO: %.3f%% context switch bugs (%ld out of %ld)", | |
1692 | (double)nr_context_switch_bugs/(double)nr_timestamps*100.0, | |
1693 | nr_context_switch_bugs, nr_timestamps); | |
1694 | if (nr_lost_events) | |
1695 | printf(" (due to lost events?)"); | |
1696 | printf("\n"); | |
1697 | } | |
1698 | } | |
1699 | ||
1700 | static void __cmd_lat(void) | |
1701 | { | |
1702 | struct rb_node *next; | |
1703 | ||
1704 | setup_pager(); | |
1705 | read_events(); | |
1706 | sort_lat(); | |
1707 | ||
3786310a FW |
1708 | printf("\n ---------------------------------------------------------------------------------------------------------------\n"); |
1709 | printf(" Task | Runtime ms | Switches | Average delay ms | Maximum delay ms | Maximum delay at |\n"); | |
1710 | printf(" ---------------------------------------------------------------------------------------------------------------\n"); | |
0ec04e16 IM |
1711 | |
1712 | next = rb_first(&sorted_atom_root); | |
1713 | ||
1714 | while (next) { | |
1715 | struct work_atoms *work_list; | |
1716 | ||
1717 | work_list = rb_entry(next, struct work_atoms, node); | |
1718 | output_lat_thread(work_list); | |
1719 | next = rb_next(next); | |
1720 | } | |
1721 | ||
1722 | printf(" -----------------------------------------------------------------------------------------\n"); | |
1723 | printf(" TOTAL: |%11.3f ms |%9Ld |\n", | |
1724 | (double)all_runtime/1e6, all_count); | |
1725 | ||
1726 | printf(" ---------------------------------------------------\n"); | |
1727 | ||
1728 | print_bad_events(); | |
1729 | printf("\n"); | |
1730 | ||
1731 | } | |
1732 | ||
1733 | static struct trace_sched_handler map_ops = { | |
1734 | .wakeup_event = NULL, | |
1735 | .switch_event = map_switch_event, | |
1736 | .runtime_event = NULL, | |
1737 | .fork_event = NULL, | |
1738 | }; | |
1739 | ||
1740 | static void __cmd_map(void) | |
1741 | { | |
40749d0f IM |
1742 | max_cpu = sysconf(_SC_NPROCESSORS_CONF); |
1743 | ||
0ec04e16 IM |
1744 | setup_pager(); |
1745 | read_events(); | |
1746 | print_bad_events(); | |
1747 | } | |
1748 | ||
1749 | static void __cmd_replay(void) | |
1750 | { | |
1751 | unsigned long i; | |
1752 | ||
1753 | calibrate_run_measurement_overhead(); | |
1754 | calibrate_sleep_measurement_overhead(); | |
1755 | ||
1756 | test_calibrations(); | |
1757 | ||
1758 | read_events(); | |
1759 | ||
1760 | printf("nr_run_events: %ld\n", nr_run_events); | |
1761 | printf("nr_sleep_events: %ld\n", nr_sleep_events); | |
1762 | printf("nr_wakeup_events: %ld\n", nr_wakeup_events); | |
1763 | ||
1764 | if (targetless_wakeups) | |
1765 | printf("target-less wakeups: %ld\n", targetless_wakeups); | |
1766 | if (multitarget_wakeups) | |
1767 | printf("multi-target wakeups: %ld\n", multitarget_wakeups); | |
1768 | if (nr_run_events_optimized) | |
1769 | printf("run atoms optimized: %ld\n", | |
1770 | nr_run_events_optimized); | |
1771 | ||
1772 | print_task_traces(); | |
1773 | add_cross_task_wakeups(); | |
1774 | ||
1775 | create_tasks(); | |
1776 | printf("------------------------------------------------------------\n"); | |
1777 | for (i = 0; i < replay_repeat; i++) | |
1778 | run_one_test(); | |
1779 | } | |
1780 | ||
1781 | ||
46f392c9 | 1782 | static const char * const sched_usage[] = { |
4b77a729 | 1783 | "perf sched [<options>] {record|latency|map|replay|trace}", |
0a02ad93 IM |
1784 | NULL |
1785 | }; | |
1786 | ||
f2858d8a | 1787 | static const struct option sched_options[] = { |
4b77a729 MG |
1788 | OPT_STRING('i', "input", &input_name, "file", |
1789 | "input file name"), | |
c0555642 | 1790 | OPT_INCR('v', "verbose", &verbose, |
f2858d8a | 1791 | "be more verbose (show symbol address, etc)"), |
0a02ad93 IM |
1792 | OPT_BOOLEAN('D', "dump-raw-trace", &dump_trace, |
1793 | "dump raw trace in ASCII"), | |
f2858d8a IM |
1794 | OPT_END() |
1795 | }; | |
1796 | ||
1797 | static const char * const latency_usage[] = { | |
1798 | "perf sched latency [<options>]", | |
1799 | NULL | |
1800 | }; | |
1801 | ||
1802 | static const struct option latency_options[] = { | |
daa1d7a5 FW |
1803 | OPT_STRING('s', "sort", &sort_order, "key[,key2...]", |
1804 | "sort by key(s): runtime, switch, avg, max"), | |
c0555642 | 1805 | OPT_INCR('v', "verbose", &verbose, |
0a02ad93 | 1806 | "be more verbose (show symbol address, etc)"), |
55ffb7a6 MG |
1807 | OPT_INTEGER('C', "CPU", &profile_cpu, |
1808 | "CPU to profile on"), | |
f2858d8a IM |
1809 | OPT_BOOLEAN('D', "dump-raw-trace", &dump_trace, |
1810 | "dump raw trace in ASCII"), | |
1811 | OPT_END() | |
1812 | }; | |
1813 | ||
1814 | static const char * const replay_usage[] = { | |
1815 | "perf sched replay [<options>]", | |
1816 | NULL | |
1817 | }; | |
1818 | ||
1819 | static const struct option replay_options[] = { | |
1967936d ACM |
1820 | OPT_UINTEGER('r', "repeat", &replay_repeat, |
1821 | "repeat the workload replay N times (-1: infinite)"), | |
c0555642 | 1822 | OPT_INCR('v', "verbose", &verbose, |
f2858d8a IM |
1823 | "be more verbose (show symbol address, etc)"), |
1824 | OPT_BOOLEAN('D', "dump-raw-trace", &dump_trace, | |
1825 | "dump raw trace in ASCII"), | |
0a02ad93 IM |
1826 | OPT_END() |
1827 | }; | |
1828 | ||
daa1d7a5 FW |
1829 | static void setup_sorting(void) |
1830 | { | |
1831 | char *tmp, *tok, *str = strdup(sort_order); | |
1832 | ||
1833 | for (tok = strtok_r(str, ", ", &tmp); | |
1834 | tok; tok = strtok_r(NULL, ", ", &tmp)) { | |
1835 | if (sort_dimension__add(tok, &sort_list) < 0) { | |
1836 | error("Unknown --sort key: `%s'", tok); | |
f2858d8a | 1837 | usage_with_options(latency_usage, latency_options); |
daa1d7a5 FW |
1838 | } |
1839 | } | |
1840 | ||
1841 | free(str); | |
1842 | ||
cbef79a8 | 1843 | sort_dimension__add("pid", &cmp_pid); |
daa1d7a5 FW |
1844 | } |
1845 | ||
1fc35b29 IM |
1846 | static const char *record_args[] = { |
1847 | "record", | |
1848 | "-a", | |
1849 | "-R", | |
ea57c4f5 | 1850 | "-f", |
dc02bf71 | 1851 | "-m", "1024", |
1fc35b29 IM |
1852 | "-c", "1", |
1853 | "-e", "sched:sched_switch:r", | |
1854 | "-e", "sched:sched_stat_wait:r", | |
1855 | "-e", "sched:sched_stat_sleep:r", | |
1856 | "-e", "sched:sched_stat_iowait:r", | |
ea57c4f5 | 1857 | "-e", "sched:sched_stat_runtime:r", |
1fc35b29 IM |
1858 | "-e", "sched:sched_process_exit:r", |
1859 | "-e", "sched:sched_process_fork:r", | |
1860 | "-e", "sched:sched_wakeup:r", | |
1861 | "-e", "sched:sched_migrate_task:r", | |
1862 | }; | |
1863 | ||
1864 | static int __cmd_record(int argc, const char **argv) | |
1865 | { | |
1866 | unsigned int rec_argc, i, j; | |
1867 | const char **rec_argv; | |
1868 | ||
1869 | rec_argc = ARRAY_SIZE(record_args) + argc - 1; | |
1870 | rec_argv = calloc(rec_argc + 1, sizeof(char *)); | |
1871 | ||
1872 | for (i = 0; i < ARRAY_SIZE(record_args); i++) | |
1873 | rec_argv[i] = strdup(record_args[i]); | |
1874 | ||
1875 | for (j = 1; j < (unsigned int)argc; j++, i++) | |
1876 | rec_argv[i] = argv[j]; | |
1877 | ||
1878 | BUG_ON(i != rec_argc); | |
1879 | ||
1880 | return cmd_record(i, rec_argv, NULL); | |
1881 | } | |
1882 | ||
0a02ad93 IM |
1883 | int cmd_sched(int argc, const char **argv, const char *prefix __used) |
1884 | { | |
f2858d8a IM |
1885 | argc = parse_options(argc, argv, sched_options, sched_usage, |
1886 | PARSE_OPT_STOP_AT_NON_OPTION); | |
1887 | if (!argc) | |
1888 | usage_with_options(sched_usage, sched_options); | |
0a02ad93 | 1889 | |
c0777c5a XG |
1890 | /* |
1891 | * Aliased to 'perf trace' for now: | |
1892 | */ | |
1893 | if (!strcmp(argv[0], "trace")) | |
1894 | return cmd_trace(argc, argv, prefix); | |
1895 | ||
75be6cf4 | 1896 | symbol__init(); |
1fc35b29 IM |
1897 | if (!strncmp(argv[0], "rec", 3)) { |
1898 | return __cmd_record(argc, argv); | |
1899 | } else if (!strncmp(argv[0], "lat", 3)) { | |
cdce9d73 | 1900 | trace_handler = &lat_ops; |
f2858d8a IM |
1901 | if (argc > 1) { |
1902 | argc = parse_options(argc, argv, latency_options, latency_usage, 0); | |
1903 | if (argc) | |
1904 | usage_with_options(latency_usage, latency_options); | |
f2858d8a | 1905 | } |
b5fae128 | 1906 | setup_sorting(); |
46f392c9 | 1907 | __cmd_lat(); |
0ec04e16 IM |
1908 | } else if (!strcmp(argv[0], "map")) { |
1909 | trace_handler = &map_ops; | |
1910 | setup_sorting(); | |
1911 | __cmd_map(); | |
f2858d8a IM |
1912 | } else if (!strncmp(argv[0], "rep", 3)) { |
1913 | trace_handler = &replay_ops; | |
1914 | if (argc) { | |
1915 | argc = parse_options(argc, argv, replay_options, replay_usage, 0); | |
1916 | if (argc) | |
1917 | usage_with_options(replay_usage, replay_options); | |
1918 | } | |
1919 | __cmd_replay(); | |
1920 | } else { | |
1921 | usage_with_options(sched_usage, sched_options); | |
1922 | } | |
1923 | ||
ec156764 | 1924 | return 0; |
0a02ad93 | 1925 | } |