Commit | Line | Data |
---|---|---|
0a02ad93 | 1 | #include "builtin.h" |
b1ffe8f3 | 2 | #include "perf.h" |
0a02ad93 IM |
3 | |
4 | #include "util/util.h" | |
ee29be62 | 5 | #include "util/evlist.h" |
0a02ad93 | 6 | #include "util/cache.h" |
e3f42609 | 7 | #include "util/evsel.h" |
0a02ad93 IM |
8 | #include "util/symbol.h" |
9 | #include "util/thread.h" | |
10 | #include "util/header.h" | |
94c744b6 | 11 | #include "util/session.h" |
45694aa7 | 12 | #include "util/tool.h" |
0a02ad93 IM |
13 | |
14 | #include "util/parse-options.h" | |
b1ffe8f3 | 15 | #include "util/trace-event.h" |
0a02ad93 | 16 | |
0a02ad93 IM |
17 | #include "util/debug.h" |
18 | ||
b1ffe8f3 | 19 | #include <sys/prctl.h> |
7b78f136 | 20 | #include <sys/resource.h> |
0a02ad93 | 21 | |
b1ffe8f3 IM |
22 | #include <semaphore.h> |
23 | #include <pthread.h> | |
24 | #include <math.h> | |
419ab0d6 | 25 | |
b1ffe8f3 IM |
26 | #define PR_SET_NAME 15 /* Set process name */ |
27 | #define MAX_CPUS 4096 | |
b1ffe8f3 IM |
28 | #define COMM_LEN 20 |
29 | #define SYM_LEN 129 | |
b1ffe8f3 | 30 | #define MAX_PID 65536 |
ec156764 | 31 | |
39aeb52f | 32 | struct sched_atom; |
ec156764 | 33 | |
b1ffe8f3 IM |
34 | struct task_desc { |
35 | unsigned long nr; | |
36 | unsigned long pid; | |
37 | char comm[COMM_LEN]; | |
ec156764 | 38 | |
b1ffe8f3 IM |
39 | unsigned long nr_events; |
40 | unsigned long curr_event; | |
39aeb52f | 41 | struct sched_atom **atoms; |
b1ffe8f3 IM |
42 | |
43 | pthread_t thread; | |
44 | sem_t sleep_sem; | |
ec156764 | 45 | |
b1ffe8f3 IM |
46 | sem_t ready_for_work; |
47 | sem_t work_done_sem; | |
48 | ||
49 | u64 cpu_usage; | |
50 | }; | |
51 | ||
52 | enum sched_event_type { | |
53 | SCHED_EVENT_RUN, | |
54 | SCHED_EVENT_SLEEP, | |
55 | SCHED_EVENT_WAKEUP, | |
55ffb7a6 | 56 | SCHED_EVENT_MIGRATION, |
b1ffe8f3 IM |
57 | }; |
58 | ||
39aeb52f | 59 | struct sched_atom { |
b1ffe8f3 | 60 | enum sched_event_type type; |
eed05fe7 | 61 | int specific_wait; |
b1ffe8f3 IM |
62 | u64 timestamp; |
63 | u64 duration; | |
64 | unsigned long nr; | |
b1ffe8f3 IM |
65 | sem_t *wait_sem; |
66 | struct task_desc *wakee; | |
67 | }; | |
68 | ||
b1ffe8f3 IM |
69 | #define TASK_STATE_TO_CHAR_STR "RSDTtZX" |
70 | ||
71 | enum thread_state { | |
72 | THREAD_SLEEPING = 0, | |
73 | THREAD_WAIT_CPU, | |
74 | THREAD_SCHED_IN, | |
75 | THREAD_IGNORE | |
76 | }; | |
77 | ||
78 | struct work_atom { | |
79 | struct list_head list; | |
80 | enum thread_state state; | |
aa1ab9d2 | 81 | u64 sched_out_time; |
b1ffe8f3 IM |
82 | u64 wake_up_time; |
83 | u64 sched_in_time; | |
84 | u64 runtime; | |
85 | }; | |
86 | ||
39aeb52f | 87 | struct work_atoms { |
88 | struct list_head work_list; | |
b1ffe8f3 IM |
89 | struct thread *thread; |
90 | struct rb_node node; | |
91 | u64 max_lat; | |
3786310a | 92 | u64 max_lat_at; |
b1ffe8f3 IM |
93 | u64 total_lat; |
94 | u64 nb_atoms; | |
95 | u64 total_runtime; | |
96 | }; | |
97 | ||
39aeb52f | 98 | typedef int (*sort_fn_t)(struct work_atoms *, struct work_atoms *); |
b1ffe8f3 | 99 | |
0e9b07e5 ACM |
100 | struct trace_switch_event { |
101 | u32 size; | |
102 | ||
103 | u16 common_type; | |
104 | u8 common_flags; | |
105 | u8 common_preempt_count; | |
106 | u32 common_pid; | |
107 | u32 common_tgid; | |
108 | ||
109 | char prev_comm[16]; | |
110 | u32 prev_pid; | |
111 | u32 prev_prio; | |
112 | u64 prev_state; | |
113 | char next_comm[16]; | |
114 | u32 next_pid; | |
115 | u32 next_prio; | |
116 | }; | |
117 | ||
118 | struct trace_runtime_event { | |
119 | u32 size; | |
120 | ||
121 | u16 common_type; | |
122 | u8 common_flags; | |
123 | u8 common_preempt_count; | |
124 | u32 common_pid; | |
125 | u32 common_tgid; | |
126 | ||
127 | char comm[16]; | |
128 | u32 pid; | |
129 | u64 runtime; | |
130 | u64 vruntime; | |
131 | }; | |
132 | ||
133 | struct trace_wakeup_event { | |
134 | u32 size; | |
b1ffe8f3 | 135 | |
0e9b07e5 ACM |
136 | u16 common_type; |
137 | u8 common_flags; | |
138 | u8 common_preempt_count; | |
139 | u32 common_pid; | |
140 | u32 common_tgid; | |
b1ffe8f3 | 141 | |
0e9b07e5 ACM |
142 | char comm[16]; |
143 | u32 pid; | |
144 | ||
145 | u32 prio; | |
146 | u32 success; | |
147 | u32 cpu; | |
148 | }; | |
149 | ||
150 | struct trace_fork_event { | |
151 | u32 size; | |
152 | ||
153 | u16 common_type; | |
154 | u8 common_flags; | |
155 | u8 common_preempt_count; | |
156 | u32 common_pid; | |
157 | u32 common_tgid; | |
158 | ||
159 | char parent_comm[16]; | |
160 | u32 parent_pid; | |
161 | char child_comm[16]; | |
162 | u32 child_pid; | |
163 | }; | |
164 | ||
165 | struct trace_migrate_task_event { | |
166 | u32 size; | |
167 | ||
168 | u16 common_type; | |
169 | u8 common_flags; | |
170 | u8 common_preempt_count; | |
171 | u32 common_pid; | |
172 | u32 common_tgid; | |
173 | ||
174 | char comm[16]; | |
175 | u32 pid; | |
176 | ||
177 | u32 prio; | |
178 | u32 cpu; | |
179 | }; | |
180 | ||
181 | struct perf_sched; | |
182 | ||
183 | struct trace_sched_handler { | |
184 | int (*switch_event)(struct perf_sched *sched, | |
185 | struct trace_switch_event *event, | |
186 | struct machine *machine, | |
187 | struct event_format *tp_format, | |
188 | struct perf_sample *sample); | |
189 | ||
190 | int (*runtime_event)(struct perf_sched *sched, | |
191 | struct trace_runtime_event *event, | |
192 | struct machine *machine, | |
193 | struct perf_sample *sample); | |
194 | ||
195 | int (*wakeup_event)(struct perf_sched *sched, | |
196 | struct trace_wakeup_event *event, | |
197 | struct machine *machine, | |
198 | struct event_format *tp_format, | |
199 | struct perf_sample *sample); | |
200 | ||
201 | int (*fork_event)(struct perf_sched *sched, | |
202 | struct trace_fork_event *event, | |
203 | struct event_format *tp_format); | |
204 | ||
205 | int (*migrate_task_event)(struct perf_sched *sched, | |
206 | struct trace_migrate_task_event *event, | |
207 | struct machine *machine, | |
208 | struct perf_sample *sample); | |
209 | }; | |
210 | ||
211 | struct perf_sched { | |
212 | struct perf_tool tool; | |
213 | const char *input_name; | |
214 | const char *sort_order; | |
215 | unsigned long nr_tasks; | |
216 | struct task_desc *pid_to_task[MAX_PID]; | |
217 | struct task_desc **tasks; | |
218 | const struct trace_sched_handler *tp_handler; | |
219 | pthread_mutex_t start_work_mutex; | |
220 | pthread_mutex_t work_done_wait_mutex; | |
221 | int profile_cpu; | |
222 | /* | |
223 | * Track the current task - that way we can know whether there's any | |
224 | * weird events, such as a task being switched away that is not current. | |
225 | */ | |
226 | int max_cpu; | |
227 | u32 curr_pid[MAX_CPUS]; | |
228 | struct thread *curr_thread[MAX_CPUS]; | |
229 | char next_shortname1; | |
230 | char next_shortname2; | |
231 | unsigned int replay_repeat; | |
232 | unsigned long nr_run_events; | |
233 | unsigned long nr_sleep_events; | |
234 | unsigned long nr_wakeup_events; | |
235 | unsigned long nr_sleep_corrections; | |
236 | unsigned long nr_run_events_optimized; | |
237 | unsigned long targetless_wakeups; | |
238 | unsigned long multitarget_wakeups; | |
239 | unsigned long nr_runs; | |
240 | unsigned long nr_timestamps; | |
241 | unsigned long nr_unordered_timestamps; | |
242 | unsigned long nr_state_machine_bugs; | |
243 | unsigned long nr_context_switch_bugs; | |
244 | unsigned long nr_events; | |
245 | unsigned long nr_lost_chunks; | |
246 | unsigned long nr_lost_events; | |
247 | u64 run_measurement_overhead; | |
248 | u64 sleep_measurement_overhead; | |
249 | u64 start_time; | |
250 | u64 cpu_usage; | |
251 | u64 runavg_cpu_usage; | |
252 | u64 parent_cpu_usage; | |
253 | u64 runavg_parent_cpu_usage; | |
254 | u64 sum_runtime; | |
255 | u64 sum_fluct; | |
256 | u64 run_avg; | |
257 | u64 all_runtime; | |
258 | u64 all_count; | |
259 | u64 cpu_last_switched[MAX_CPUS]; | |
260 | struct rb_root atom_root, sorted_atom_root; | |
261 | struct list_head sort_list, cmp_pid; | |
262 | }; | |
b1ffe8f3 IM |
263 | |
264 | static u64 get_nsecs(void) | |
ec156764 IM |
265 | { |
266 | struct timespec ts; | |
267 | ||
268 | clock_gettime(CLOCK_MONOTONIC, &ts); | |
269 | ||
270 | return ts.tv_sec * 1000000000ULL + ts.tv_nsec; | |
271 | } | |
272 | ||
0e9b07e5 | 273 | static void burn_nsecs(struct perf_sched *sched, u64 nsecs) |
ec156764 | 274 | { |
b1ffe8f3 | 275 | u64 T0 = get_nsecs(), T1; |
ec156764 IM |
276 | |
277 | do { | |
278 | T1 = get_nsecs(); | |
0e9b07e5 | 279 | } while (T1 + sched->run_measurement_overhead < T0 + nsecs); |
ec156764 IM |
280 | } |
281 | ||
b1ffe8f3 | 282 | static void sleep_nsecs(u64 nsecs) |
ec156764 IM |
283 | { |
284 | struct timespec ts; | |
285 | ||
286 | ts.tv_nsec = nsecs % 999999999; | |
287 | ts.tv_sec = nsecs / 999999999; | |
288 | ||
289 | nanosleep(&ts, NULL); | |
290 | } | |
291 | ||
0e9b07e5 | 292 | static void calibrate_run_measurement_overhead(struct perf_sched *sched) |
ec156764 | 293 | { |
b1ffe8f3 | 294 | u64 T0, T1, delta, min_delta = 1000000000ULL; |
ec156764 IM |
295 | int i; |
296 | ||
297 | for (i = 0; i < 10; i++) { | |
298 | T0 = get_nsecs(); | |
0e9b07e5 | 299 | burn_nsecs(sched, 0); |
ec156764 IM |
300 | T1 = get_nsecs(); |
301 | delta = T1-T0; | |
302 | min_delta = min(min_delta, delta); | |
303 | } | |
0e9b07e5 | 304 | sched->run_measurement_overhead = min_delta; |
ec156764 | 305 | |
9486aa38 | 306 | printf("run measurement overhead: %" PRIu64 " nsecs\n", min_delta); |
ec156764 IM |
307 | } |
308 | ||
0e9b07e5 | 309 | static void calibrate_sleep_measurement_overhead(struct perf_sched *sched) |
ec156764 | 310 | { |
b1ffe8f3 | 311 | u64 T0, T1, delta, min_delta = 1000000000ULL; |
ec156764 IM |
312 | int i; |
313 | ||
314 | for (i = 0; i < 10; i++) { | |
315 | T0 = get_nsecs(); | |
316 | sleep_nsecs(10000); | |
317 | T1 = get_nsecs(); | |
318 | delta = T1-T0; | |
319 | min_delta = min(min_delta, delta); | |
320 | } | |
321 | min_delta -= 10000; | |
0e9b07e5 | 322 | sched->sleep_measurement_overhead = min_delta; |
ec156764 | 323 | |
9486aa38 | 324 | printf("sleep measurement overhead: %" PRIu64 " nsecs\n", min_delta); |
ec156764 IM |
325 | } |
326 | ||
39aeb52f | 327 | static struct sched_atom * |
b1ffe8f3 | 328 | get_new_event(struct task_desc *task, u64 timestamp) |
ec156764 | 329 | { |
36479484 | 330 | struct sched_atom *event = zalloc(sizeof(*event)); |
ec156764 IM |
331 | unsigned long idx = task->nr_events; |
332 | size_t size; | |
333 | ||
334 | event->timestamp = timestamp; | |
335 | event->nr = idx; | |
336 | ||
337 | task->nr_events++; | |
39aeb52f | 338 | size = sizeof(struct sched_atom *) * task->nr_events; |
339 | task->atoms = realloc(task->atoms, size); | |
340 | BUG_ON(!task->atoms); | |
ec156764 | 341 | |
39aeb52f | 342 | task->atoms[idx] = event; |
ec156764 IM |
343 | |
344 | return event; | |
345 | } | |
346 | ||
39aeb52f | 347 | static struct sched_atom *last_event(struct task_desc *task) |
ec156764 IM |
348 | { |
349 | if (!task->nr_events) | |
350 | return NULL; | |
351 | ||
39aeb52f | 352 | return task->atoms[task->nr_events - 1]; |
ec156764 IM |
353 | } |
354 | ||
0e9b07e5 ACM |
355 | static void add_sched_event_run(struct perf_sched *sched, struct task_desc *task, |
356 | u64 timestamp, u64 duration) | |
ec156764 | 357 | { |
39aeb52f | 358 | struct sched_atom *event, *curr_event = last_event(task); |
ec156764 IM |
359 | |
360 | /* | |
fbf94829 IM |
361 | * optimize an existing RUN event by merging this one |
362 | * to it: | |
363 | */ | |
ec156764 | 364 | if (curr_event && curr_event->type == SCHED_EVENT_RUN) { |
0e9b07e5 | 365 | sched->nr_run_events_optimized++; |
ec156764 IM |
366 | curr_event->duration += duration; |
367 | return; | |
368 | } | |
369 | ||
370 | event = get_new_event(task, timestamp); | |
371 | ||
372 | event->type = SCHED_EVENT_RUN; | |
373 | event->duration = duration; | |
374 | ||
0e9b07e5 | 375 | sched->nr_run_events++; |
ec156764 IM |
376 | } |
377 | ||
0e9b07e5 ACM |
378 | static void add_sched_event_wakeup(struct perf_sched *sched, struct task_desc *task, |
379 | u64 timestamp, struct task_desc *wakee) | |
ec156764 | 380 | { |
39aeb52f | 381 | struct sched_atom *event, *wakee_event; |
ec156764 IM |
382 | |
383 | event = get_new_event(task, timestamp); | |
384 | event->type = SCHED_EVENT_WAKEUP; | |
385 | event->wakee = wakee; | |
386 | ||
387 | wakee_event = last_event(wakee); | |
388 | if (!wakee_event || wakee_event->type != SCHED_EVENT_SLEEP) { | |
0e9b07e5 | 389 | sched->targetless_wakeups++; |
ec156764 IM |
390 | return; |
391 | } | |
392 | if (wakee_event->wait_sem) { | |
0e9b07e5 | 393 | sched->multitarget_wakeups++; |
ec156764 IM |
394 | return; |
395 | } | |
396 | ||
36479484 | 397 | wakee_event->wait_sem = zalloc(sizeof(*wakee_event->wait_sem)); |
ec156764 IM |
398 | sem_init(wakee_event->wait_sem, 0, 0); |
399 | wakee_event->specific_wait = 1; | |
400 | event->wait_sem = wakee_event->wait_sem; | |
401 | ||
0e9b07e5 | 402 | sched->nr_wakeup_events++; |
ec156764 IM |
403 | } |
404 | ||
0e9b07e5 ACM |
405 | static void add_sched_event_sleep(struct perf_sched *sched, struct task_desc *task, |
406 | u64 timestamp, u64 task_state __maybe_unused) | |
ec156764 | 407 | { |
39aeb52f | 408 | struct sched_atom *event = get_new_event(task, timestamp); |
ec156764 IM |
409 | |
410 | event->type = SCHED_EVENT_SLEEP; | |
411 | ||
0e9b07e5 | 412 | sched->nr_sleep_events++; |
ec156764 IM |
413 | } |
414 | ||
0e9b07e5 ACM |
415 | static struct task_desc *register_pid(struct perf_sched *sched, |
416 | unsigned long pid, const char *comm) | |
ec156764 IM |
417 | { |
418 | struct task_desc *task; | |
419 | ||
420 | BUG_ON(pid >= MAX_PID); | |
421 | ||
0e9b07e5 | 422 | task = sched->pid_to_task[pid]; |
ec156764 IM |
423 | |
424 | if (task) | |
425 | return task; | |
426 | ||
36479484 | 427 | task = zalloc(sizeof(*task)); |
ec156764 | 428 | task->pid = pid; |
0e9b07e5 | 429 | task->nr = sched->nr_tasks; |
ec156764 IM |
430 | strcpy(task->comm, comm); |
431 | /* | |
432 | * every task starts in sleeping state - this gets ignored | |
433 | * if there's no wakeup pointing to this sleep state: | |
434 | */ | |
0e9b07e5 | 435 | add_sched_event_sleep(sched, task, 0, 0); |
ec156764 | 436 | |
0e9b07e5 ACM |
437 | sched->pid_to_task[pid] = task; |
438 | sched->nr_tasks++; | |
439 | sched->tasks = realloc(sched->tasks, sched->nr_tasks * sizeof(struct task_task *)); | |
440 | BUG_ON(!sched->tasks); | |
441 | sched->tasks[task->nr] = task; | |
ec156764 | 442 | |
ad236fd2 | 443 | if (verbose) |
0e9b07e5 | 444 | printf("registered task #%ld, PID %ld (%s)\n", sched->nr_tasks, pid, comm); |
ec156764 IM |
445 | |
446 | return task; | |
447 | } | |
448 | ||
449 | ||
0e9b07e5 | 450 | static void print_task_traces(struct perf_sched *sched) |
ec156764 IM |
451 | { |
452 | struct task_desc *task; | |
453 | unsigned long i; | |
454 | ||
0e9b07e5 ACM |
455 | for (i = 0; i < sched->nr_tasks; i++) { |
456 | task = sched->tasks[i]; | |
ad236fd2 | 457 | printf("task %6ld (%20s:%10ld), nr_events: %ld\n", |
ec156764 IM |
458 | task->nr, task->comm, task->pid, task->nr_events); |
459 | } | |
460 | } | |
461 | ||
0e9b07e5 | 462 | static void add_cross_task_wakeups(struct perf_sched *sched) |
ec156764 IM |
463 | { |
464 | struct task_desc *task1, *task2; | |
465 | unsigned long i, j; | |
466 | ||
0e9b07e5 ACM |
467 | for (i = 0; i < sched->nr_tasks; i++) { |
468 | task1 = sched->tasks[i]; | |
ec156764 | 469 | j = i + 1; |
0e9b07e5 | 470 | if (j == sched->nr_tasks) |
ec156764 | 471 | j = 0; |
0e9b07e5 ACM |
472 | task2 = sched->tasks[j]; |
473 | add_sched_event_wakeup(sched, task1, 0, task2); | |
ec156764 IM |
474 | } |
475 | } | |
476 | ||
0e9b07e5 ACM |
477 | static void perf_sched__process_event(struct perf_sched *sched, |
478 | struct sched_atom *atom) | |
ec156764 IM |
479 | { |
480 | int ret = 0; | |
ec156764 | 481 | |
39aeb52f | 482 | switch (atom->type) { |
ec156764 | 483 | case SCHED_EVENT_RUN: |
0e9b07e5 | 484 | burn_nsecs(sched, atom->duration); |
ec156764 IM |
485 | break; |
486 | case SCHED_EVENT_SLEEP: | |
39aeb52f | 487 | if (atom->wait_sem) |
488 | ret = sem_wait(atom->wait_sem); | |
ec156764 IM |
489 | BUG_ON(ret); |
490 | break; | |
491 | case SCHED_EVENT_WAKEUP: | |
39aeb52f | 492 | if (atom->wait_sem) |
493 | ret = sem_post(atom->wait_sem); | |
ec156764 IM |
494 | BUG_ON(ret); |
495 | break; | |
55ffb7a6 MG |
496 | case SCHED_EVENT_MIGRATION: |
497 | break; | |
ec156764 IM |
498 | default: |
499 | BUG_ON(1); | |
500 | } | |
501 | } | |
502 | ||
b1ffe8f3 | 503 | static u64 get_cpu_usage_nsec_parent(void) |
ec156764 IM |
504 | { |
505 | struct rusage ru; | |
b1ffe8f3 | 506 | u64 sum; |
ec156764 IM |
507 | int err; |
508 | ||
509 | err = getrusage(RUSAGE_SELF, &ru); | |
510 | BUG_ON(err); | |
511 | ||
512 | sum = ru.ru_utime.tv_sec*1e9 + ru.ru_utime.tv_usec*1e3; | |
513 | sum += ru.ru_stime.tv_sec*1e9 + ru.ru_stime.tv_usec*1e3; | |
514 | ||
515 | return sum; | |
516 | } | |
517 | ||
c0c9e721 | 518 | static int self_open_counters(void) |
ec156764 | 519 | { |
c0c9e721 XG |
520 | struct perf_event_attr attr; |
521 | int fd; | |
ec156764 | 522 | |
c0c9e721 | 523 | memset(&attr, 0, sizeof(attr)); |
ec156764 | 524 | |
c0c9e721 XG |
525 | attr.type = PERF_TYPE_SOFTWARE; |
526 | attr.config = PERF_COUNT_SW_TASK_CLOCK; | |
ec156764 | 527 | |
c0c9e721 XG |
528 | fd = sys_perf_event_open(&attr, 0, -1, -1, 0); |
529 | ||
530 | if (fd < 0) | |
a116e05d ACM |
531 | pr_debug("Error: sys_perf_event_open() syscall returned" |
532 | "with %d (%s)\n", fd, strerror(errno)); | |
c0c9e721 XG |
533 | return fd; |
534 | } | |
535 | ||
536 | static u64 get_cpu_usage_nsec_self(int fd) | |
537 | { | |
538 | u64 runtime; | |
539 | int ret; | |
540 | ||
541 | ret = read(fd, &runtime, sizeof(runtime)); | |
542 | BUG_ON(ret != sizeof(runtime)); | |
543 | ||
544 | return runtime; | |
ec156764 IM |
545 | } |
546 | ||
0e9b07e5 ACM |
547 | struct sched_thread_parms { |
548 | struct task_desc *task; | |
549 | struct perf_sched *sched; | |
550 | }; | |
551 | ||
ec156764 IM |
552 | static void *thread_func(void *ctx) |
553 | { | |
0e9b07e5 ACM |
554 | struct sched_thread_parms *parms = ctx; |
555 | struct task_desc *this_task = parms->task; | |
556 | struct perf_sched *sched = parms->sched; | |
b1ffe8f3 | 557 | u64 cpu_usage_0, cpu_usage_1; |
ec156764 IM |
558 | unsigned long i, ret; |
559 | char comm2[22]; | |
c0c9e721 | 560 | int fd; |
ec156764 | 561 | |
0e9b07e5 ACM |
562 | free(parms); |
563 | ||
ec156764 IM |
564 | sprintf(comm2, ":%s", this_task->comm); |
565 | prctl(PR_SET_NAME, comm2); | |
c0c9e721 | 566 | fd = self_open_counters(); |
a116e05d ACM |
567 | if (fd < 0) |
568 | return NULL; | |
ec156764 IM |
569 | again: |
570 | ret = sem_post(&this_task->ready_for_work); | |
571 | BUG_ON(ret); | |
0e9b07e5 | 572 | ret = pthread_mutex_lock(&sched->start_work_mutex); |
ec156764 | 573 | BUG_ON(ret); |
0e9b07e5 | 574 | ret = pthread_mutex_unlock(&sched->start_work_mutex); |
ec156764 | 575 | BUG_ON(ret); |
ec156764 | 576 | |
c0c9e721 | 577 | cpu_usage_0 = get_cpu_usage_nsec_self(fd); |
ec156764 IM |
578 | |
579 | for (i = 0; i < this_task->nr_events; i++) { | |
580 | this_task->curr_event = i; | |
0e9b07e5 | 581 | perf_sched__process_event(sched, this_task->atoms[i]); |
ec156764 IM |
582 | } |
583 | ||
c0c9e721 | 584 | cpu_usage_1 = get_cpu_usage_nsec_self(fd); |
ec156764 | 585 | this_task->cpu_usage = cpu_usage_1 - cpu_usage_0; |
ec156764 IM |
586 | ret = sem_post(&this_task->work_done_sem); |
587 | BUG_ON(ret); | |
ec156764 | 588 | |
0e9b07e5 | 589 | ret = pthread_mutex_lock(&sched->work_done_wait_mutex); |
ec156764 | 590 | BUG_ON(ret); |
0e9b07e5 | 591 | ret = pthread_mutex_unlock(&sched->work_done_wait_mutex); |
ec156764 | 592 | BUG_ON(ret); |
ec156764 IM |
593 | |
594 | goto again; | |
595 | } | |
596 | ||
0e9b07e5 | 597 | static void create_tasks(struct perf_sched *sched) |
ec156764 IM |
598 | { |
599 | struct task_desc *task; | |
600 | pthread_attr_t attr; | |
601 | unsigned long i; | |
602 | int err; | |
603 | ||
604 | err = pthread_attr_init(&attr); | |
605 | BUG_ON(err); | |
12f7e036 JP |
606 | err = pthread_attr_setstacksize(&attr, |
607 | (size_t) max(16 * 1024, PTHREAD_STACK_MIN)); | |
ec156764 | 608 | BUG_ON(err); |
0e9b07e5 | 609 | err = pthread_mutex_lock(&sched->start_work_mutex); |
ec156764 | 610 | BUG_ON(err); |
0e9b07e5 | 611 | err = pthread_mutex_lock(&sched->work_done_wait_mutex); |
ec156764 | 612 | BUG_ON(err); |
0e9b07e5 ACM |
613 | for (i = 0; i < sched->nr_tasks; i++) { |
614 | struct sched_thread_parms *parms = malloc(sizeof(*parms)); | |
615 | BUG_ON(parms == NULL); | |
616 | parms->task = task = sched->tasks[i]; | |
617 | parms->sched = sched; | |
ec156764 IM |
618 | sem_init(&task->sleep_sem, 0, 0); |
619 | sem_init(&task->ready_for_work, 0, 0); | |
620 | sem_init(&task->work_done_sem, 0, 0); | |
621 | task->curr_event = 0; | |
0e9b07e5 | 622 | err = pthread_create(&task->thread, &attr, thread_func, parms); |
ec156764 IM |
623 | BUG_ON(err); |
624 | } | |
625 | } | |
626 | ||
0e9b07e5 | 627 | static void wait_for_tasks(struct perf_sched *sched) |
ec156764 | 628 | { |
b1ffe8f3 | 629 | u64 cpu_usage_0, cpu_usage_1; |
ec156764 IM |
630 | struct task_desc *task; |
631 | unsigned long i, ret; | |
632 | ||
0e9b07e5 ACM |
633 | sched->start_time = get_nsecs(); |
634 | sched->cpu_usage = 0; | |
635 | pthread_mutex_unlock(&sched->work_done_wait_mutex); | |
ec156764 | 636 | |
0e9b07e5 ACM |
637 | for (i = 0; i < sched->nr_tasks; i++) { |
638 | task = sched->tasks[i]; | |
ec156764 IM |
639 | ret = sem_wait(&task->ready_for_work); |
640 | BUG_ON(ret); | |
641 | sem_init(&task->ready_for_work, 0, 0); | |
642 | } | |
0e9b07e5 | 643 | ret = pthread_mutex_lock(&sched->work_done_wait_mutex); |
ec156764 IM |
644 | BUG_ON(ret); |
645 | ||
646 | cpu_usage_0 = get_cpu_usage_nsec_parent(); | |
647 | ||
0e9b07e5 | 648 | pthread_mutex_unlock(&sched->start_work_mutex); |
ec156764 | 649 | |
0e9b07e5 ACM |
650 | for (i = 0; i < sched->nr_tasks; i++) { |
651 | task = sched->tasks[i]; | |
ec156764 IM |
652 | ret = sem_wait(&task->work_done_sem); |
653 | BUG_ON(ret); | |
654 | sem_init(&task->work_done_sem, 0, 0); | |
0e9b07e5 | 655 | sched->cpu_usage += task->cpu_usage; |
ec156764 IM |
656 | task->cpu_usage = 0; |
657 | } | |
658 | ||
659 | cpu_usage_1 = get_cpu_usage_nsec_parent(); | |
0e9b07e5 ACM |
660 | if (!sched->runavg_cpu_usage) |
661 | sched->runavg_cpu_usage = sched->cpu_usage; | |
662 | sched->runavg_cpu_usage = (sched->runavg_cpu_usage * 9 + sched->cpu_usage) / 10; | |
ec156764 | 663 | |
0e9b07e5 ACM |
664 | sched->parent_cpu_usage = cpu_usage_1 - cpu_usage_0; |
665 | if (!sched->runavg_parent_cpu_usage) | |
666 | sched->runavg_parent_cpu_usage = sched->parent_cpu_usage; | |
667 | sched->runavg_parent_cpu_usage = (sched->runavg_parent_cpu_usage * 9 + | |
668 | sched->parent_cpu_usage)/10; | |
ec156764 | 669 | |
0e9b07e5 | 670 | ret = pthread_mutex_lock(&sched->start_work_mutex); |
ec156764 IM |
671 | BUG_ON(ret); |
672 | ||
0e9b07e5 ACM |
673 | for (i = 0; i < sched->nr_tasks; i++) { |
674 | task = sched->tasks[i]; | |
ec156764 IM |
675 | sem_init(&task->sleep_sem, 0, 0); |
676 | task->curr_event = 0; | |
677 | } | |
678 | } | |
679 | ||
0e9b07e5 | 680 | static void run_one_test(struct perf_sched *sched) |
ec156764 | 681 | { |
fb7d0b3c | 682 | u64 T0, T1, delta, avg_delta, fluct; |
ec156764 IM |
683 | |
684 | T0 = get_nsecs(); | |
0e9b07e5 | 685 | wait_for_tasks(sched); |
ec156764 IM |
686 | T1 = get_nsecs(); |
687 | ||
688 | delta = T1 - T0; | |
0e9b07e5 ACM |
689 | sched->sum_runtime += delta; |
690 | sched->nr_runs++; | |
ec156764 | 691 | |
0e9b07e5 | 692 | avg_delta = sched->sum_runtime / sched->nr_runs; |
ec156764 IM |
693 | if (delta < avg_delta) |
694 | fluct = avg_delta - delta; | |
695 | else | |
696 | fluct = delta - avg_delta; | |
0e9b07e5 ACM |
697 | sched->sum_fluct += fluct; |
698 | if (!sched->run_avg) | |
699 | sched->run_avg = delta; | |
700 | sched->run_avg = (sched->run_avg * 9 + delta) / 10; | |
ec156764 | 701 | |
0e9b07e5 | 702 | printf("#%-3ld: %0.3f, ", sched->nr_runs, (double)delta / 1000000.0); |
ec156764 | 703 | |
0e9b07e5 | 704 | printf("ravg: %0.2f, ", (double)sched->run_avg / 1e6); |
ec156764 | 705 | |
ad236fd2 | 706 | printf("cpu: %0.2f / %0.2f", |
0e9b07e5 | 707 | (double)sched->cpu_usage / 1e6, (double)sched->runavg_cpu_usage / 1e6); |
ec156764 IM |
708 | |
709 | #if 0 | |
710 | /* | |
fbf94829 | 711 | * rusage statistics done by the parent, these are less |
0e9b07e5 | 712 | * accurate than the sched->sum_exec_runtime based statistics: |
fbf94829 | 713 | */ |
ad236fd2 | 714 | printf(" [%0.2f / %0.2f]", |
0e9b07e5 ACM |
715 | (double)sched->parent_cpu_usage/1e6, |
716 | (double)sched->runavg_parent_cpu_usage/1e6); | |
ec156764 IM |
717 | #endif |
718 | ||
ad236fd2 | 719 | printf("\n"); |
ec156764 | 720 | |
0e9b07e5 ACM |
721 | if (sched->nr_sleep_corrections) |
722 | printf(" (%ld sleep corrections)\n", sched->nr_sleep_corrections); | |
723 | sched->nr_sleep_corrections = 0; | |
ec156764 IM |
724 | } |
725 | ||
0e9b07e5 | 726 | static void test_calibrations(struct perf_sched *sched) |
ec156764 | 727 | { |
b1ffe8f3 | 728 | u64 T0, T1; |
ec156764 IM |
729 | |
730 | T0 = get_nsecs(); | |
0e9b07e5 | 731 | burn_nsecs(sched, 1e6); |
ec156764 IM |
732 | T1 = get_nsecs(); |
733 | ||
9486aa38 | 734 | printf("the run test took %" PRIu64 " nsecs\n", T1 - T0); |
ec156764 IM |
735 | |
736 | T0 = get_nsecs(); | |
737 | sleep_nsecs(1e6); | |
738 | T1 = get_nsecs(); | |
739 | ||
9486aa38 | 740 | printf("the sleep test took %" PRIu64 " nsecs\n", T1 - T0); |
ec156764 IM |
741 | } |
742 | ||
46538818 FW |
743 | #define FILL_FIELD(ptr, field, event, data) \ |
744 | ptr.field = (typeof(ptr.field)) raw_field_value(event, #field, data) | |
745 | ||
746 | #define FILL_ARRAY(ptr, array, event, data) \ | |
747 | do { \ | |
748 | void *__array = raw_field_ptr(event, #array, data); \ | |
749 | memcpy(ptr.array, __array, sizeof(ptr.array)); \ | |
750 | } while(0) | |
751 | ||
752 | #define FILL_COMMON_FIELDS(ptr, event, data) \ | |
753 | do { \ | |
754 | FILL_FIELD(ptr, common_type, event, data); \ | |
755 | FILL_FIELD(ptr, common_flags, event, data); \ | |
756 | FILL_FIELD(ptr, common_preempt_count, event, data); \ | |
757 | FILL_FIELD(ptr, common_pid, event, data); \ | |
758 | FILL_FIELD(ptr, common_tgid, event, data); \ | |
759 | } while (0) | |
760 | ||
a116e05d | 761 | static int |
0e9b07e5 ACM |
762 | replay_wakeup_event(struct perf_sched *sched, |
763 | struct trace_wakeup_event *wakeup_event, | |
1d037ca1 | 764 | struct machine *machine __maybe_unused, |
7f7f8d0b | 765 | struct event_format *event, struct perf_sample *sample) |
419ab0d6 FW |
766 | { |
767 | struct task_desc *waker, *wakee; | |
fbf94829 | 768 | |
ad236fd2 IM |
769 | if (verbose) { |
770 | printf("sched_wakeup event %p\n", event); | |
fbf94829 | 771 | |
ad236fd2 | 772 | printf(" ... pid %d woke up %s/%d\n", |
0e9b07e5 | 773 | wakeup_event->common_pid, wakeup_event->comm, wakeup_event->pid); |
ad236fd2 | 774 | } |
fbf94829 | 775 | |
0e9b07e5 ACM |
776 | waker = register_pid(sched, wakeup_event->common_pid, "<unknown>"); |
777 | wakee = register_pid(sched, wakeup_event->pid, wakeup_event->comm); | |
fbf94829 | 778 | |
0e9b07e5 | 779 | add_sched_event_wakeup(sched, waker, sample->time, wakee); |
a116e05d | 780 | return 0; |
ec156764 IM |
781 | } |
782 | ||
a116e05d | 783 | static int |
0e9b07e5 ACM |
784 | replay_switch_event(struct perf_sched *sched, |
785 | struct trace_switch_event *switch_event, | |
1d037ca1 | 786 | struct machine *machine __maybe_unused, |
aaf045f7 | 787 | struct event_format *event, |
7f7f8d0b | 788 | struct perf_sample *sample) |
ec156764 | 789 | { |
1d037ca1 | 790 | struct task_desc *prev, __maybe_unused *next; |
7f7f8d0b ACM |
791 | u64 timestamp0, timestamp = sample->time; |
792 | int cpu = sample->cpu; | |
fbf94829 IM |
793 | s64 delta; |
794 | ||
ad236fd2 IM |
795 | if (verbose) |
796 | printf("sched_switch event %p\n", event); | |
797 | ||
fbf94829 | 798 | if (cpu >= MAX_CPUS || cpu < 0) |
a116e05d | 799 | return 0; |
fbf94829 | 800 | |
0e9b07e5 | 801 | timestamp0 = sched->cpu_last_switched[cpu]; |
fbf94829 IM |
802 | if (timestamp0) |
803 | delta = timestamp - timestamp0; | |
804 | else | |
805 | delta = 0; | |
806 | ||
a116e05d ACM |
807 | if (delta < 0) { |
808 | pr_debug("hm, delta: %" PRIu64 " < 0 ?\n", delta); | |
809 | return -1; | |
810 | } | |
fbf94829 | 811 | |
ad236fd2 | 812 | if (verbose) { |
9486aa38 | 813 | printf(" ... switch from %s/%d to %s/%d [ran %" PRIu64 " nsecs]\n", |
419ab0d6 FW |
814 | switch_event->prev_comm, switch_event->prev_pid, |
815 | switch_event->next_comm, switch_event->next_pid, | |
ad236fd2 IM |
816 | delta); |
817 | } | |
fbf94829 | 818 | |
0e9b07e5 ACM |
819 | prev = register_pid(sched, switch_event->prev_pid, switch_event->prev_comm); |
820 | next = register_pid(sched, switch_event->next_pid, switch_event->next_comm); | |
fbf94829 | 821 | |
0e9b07e5 | 822 | sched->cpu_last_switched[cpu] = timestamp; |
fbf94829 | 823 | |
0e9b07e5 ACM |
824 | add_sched_event_run(sched, prev, timestamp, delta); |
825 | add_sched_event_sleep(sched, prev, timestamp, switch_event->prev_state); | |
a116e05d ACM |
826 | |
827 | return 0; | |
fbf94829 IM |
828 | } |
829 | ||
a116e05d | 830 | static int |
0e9b07e5 | 831 | replay_fork_event(struct perf_sched *sched, struct trace_fork_event *fork_event, |
7f7f8d0b | 832 | struct event_format *event) |
419ab0d6 FW |
833 | { |
834 | if (verbose) { | |
835 | printf("sched_fork event %p\n", event); | |
836 | printf("... parent: %s/%d\n", fork_event->parent_comm, fork_event->parent_pid); | |
837 | printf("... child: %s/%d\n", fork_event->child_comm, fork_event->child_pid); | |
838 | } | |
0e9b07e5 ACM |
839 | register_pid(sched, fork_event->parent_pid, fork_event->parent_comm); |
840 | register_pid(sched, fork_event->child_pid, fork_event->child_comm); | |
a116e05d | 841 | return 0; |
419ab0d6 | 842 | } |
fbf94829 | 843 | |
b1ffe8f3 IM |
844 | struct sort_dimension { |
845 | const char *name; | |
b5fae128 | 846 | sort_fn_t cmp; |
b1ffe8f3 IM |
847 | struct list_head list; |
848 | }; | |
849 | ||
daa1d7a5 | 850 | static int |
39aeb52f | 851 | thread_lat_cmp(struct list_head *list, struct work_atoms *l, struct work_atoms *r) |
daa1d7a5 FW |
852 | { |
853 | struct sort_dimension *sort; | |
854 | int ret = 0; | |
855 | ||
b5fae128 IM |
856 | BUG_ON(list_empty(list)); |
857 | ||
daa1d7a5 FW |
858 | list_for_each_entry(sort, list, list) { |
859 | ret = sort->cmp(l, r); | |
860 | if (ret) | |
861 | return ret; | |
862 | } | |
863 | ||
864 | return ret; | |
865 | } | |
866 | ||
39aeb52f | 867 | static struct work_atoms * |
b5fae128 IM |
868 | thread_atoms_search(struct rb_root *root, struct thread *thread, |
869 | struct list_head *sort_list) | |
870 | { | |
871 | struct rb_node *node = root->rb_node; | |
39aeb52f | 872 | struct work_atoms key = { .thread = thread }; |
b5fae128 IM |
873 | |
874 | while (node) { | |
39aeb52f | 875 | struct work_atoms *atoms; |
b5fae128 IM |
876 | int cmp; |
877 | ||
39aeb52f | 878 | atoms = container_of(node, struct work_atoms, node); |
b5fae128 IM |
879 | |
880 | cmp = thread_lat_cmp(sort_list, &key, atoms); | |
881 | if (cmp > 0) | |
882 | node = node->rb_left; | |
883 | else if (cmp < 0) | |
884 | node = node->rb_right; | |
885 | else { | |
886 | BUG_ON(thread != atoms->thread); | |
887 | return atoms; | |
888 | } | |
889 | } | |
890 | return NULL; | |
891 | } | |
892 | ||
cdce9d73 | 893 | static void |
39aeb52f | 894 | __thread_latency_insert(struct rb_root *root, struct work_atoms *data, |
daa1d7a5 | 895 | struct list_head *sort_list) |
cdce9d73 FW |
896 | { |
897 | struct rb_node **new = &(root->rb_node), *parent = NULL; | |
898 | ||
899 | while (*new) { | |
39aeb52f | 900 | struct work_atoms *this; |
daa1d7a5 | 901 | int cmp; |
cdce9d73 | 902 | |
39aeb52f | 903 | this = container_of(*new, struct work_atoms, node); |
cdce9d73 | 904 | parent = *new; |
daa1d7a5 FW |
905 | |
906 | cmp = thread_lat_cmp(sort_list, data, this); | |
907 | ||
908 | if (cmp > 0) | |
cdce9d73 | 909 | new = &((*new)->rb_left); |
cdce9d73 | 910 | else |
daa1d7a5 | 911 | new = &((*new)->rb_right); |
cdce9d73 FW |
912 | } |
913 | ||
914 | rb_link_node(&data->node, parent, new); | |
915 | rb_insert_color(&data->node, root); | |
916 | } | |
917 | ||
0e9b07e5 | 918 | static int thread_atoms_insert(struct perf_sched *sched, struct thread *thread) |
cdce9d73 | 919 | { |
36479484 | 920 | struct work_atoms *atoms = zalloc(sizeof(*atoms)); |
a116e05d ACM |
921 | if (!atoms) { |
922 | pr_err("No memory at %s\n", __func__); | |
923 | return -1; | |
924 | } | |
cdce9d73 | 925 | |
17562205 | 926 | atoms->thread = thread; |
39aeb52f | 927 | INIT_LIST_HEAD(&atoms->work_list); |
0e9b07e5 | 928 | __thread_latency_insert(&sched->atom_root, atoms, &sched->cmp_pid); |
a116e05d | 929 | return 0; |
cdce9d73 FW |
930 | } |
931 | ||
0e9b07e5 ACM |
932 | static int latency_fork_event(struct perf_sched *sched __maybe_unused, |
933 | struct trace_fork_event *fork_event __maybe_unused, | |
1d037ca1 | 934 | struct event_format *event __maybe_unused) |
cdce9d73 FW |
935 | { |
936 | /* should insert the newcomer */ | |
a116e05d | 937 | return 0; |
cdce9d73 FW |
938 | } |
939 | ||
940 | static char sched_out_state(struct trace_switch_event *switch_event) | |
941 | { | |
942 | const char *str = TASK_STATE_TO_CHAR_STR; | |
943 | ||
944 | return str[switch_event->prev_state]; | |
945 | } | |
946 | ||
a116e05d | 947 | static int |
39aeb52f | 948 | add_sched_out_event(struct work_atoms *atoms, |
949 | char run_state, | |
950 | u64 timestamp) | |
cdce9d73 | 951 | { |
36479484 | 952 | struct work_atom *atom = zalloc(sizeof(*atom)); |
a116e05d ACM |
953 | if (!atom) { |
954 | pr_err("Non memory at %s", __func__); | |
955 | return -1; | |
956 | } | |
cdce9d73 | 957 | |
aa1ab9d2 FW |
958 | atom->sched_out_time = timestamp; |
959 | ||
39aeb52f | 960 | if (run_state == 'R') { |
b1ffe8f3 | 961 | atom->state = THREAD_WAIT_CPU; |
aa1ab9d2 | 962 | atom->wake_up_time = atom->sched_out_time; |
c6ced611 FW |
963 | } |
964 | ||
39aeb52f | 965 | list_add_tail(&atom->list, &atoms->work_list); |
a116e05d | 966 | return 0; |
cdce9d73 FW |
967 | } |
968 | ||
969 | static void | |
1d037ca1 IT |
970 | add_runtime_event(struct work_atoms *atoms, u64 delta, |
971 | u64 timestamp __maybe_unused) | |
39aeb52f | 972 | { |
973 | struct work_atom *atom; | |
974 | ||
975 | BUG_ON(list_empty(&atoms->work_list)); | |
976 | ||
977 | atom = list_entry(atoms->work_list.prev, struct work_atom, list); | |
978 | ||
979 | atom->runtime += delta; | |
980 | atoms->total_runtime += delta; | |
981 | } | |
982 | ||
983 | static void | |
984 | add_sched_in_event(struct work_atoms *atoms, u64 timestamp) | |
cdce9d73 | 985 | { |
b1ffe8f3 | 986 | struct work_atom *atom; |
66685678 | 987 | u64 delta; |
cdce9d73 | 988 | |
39aeb52f | 989 | if (list_empty(&atoms->work_list)) |
cdce9d73 FW |
990 | return; |
991 | ||
39aeb52f | 992 | atom = list_entry(atoms->work_list.prev, struct work_atom, list); |
cdce9d73 | 993 | |
b1ffe8f3 | 994 | if (atom->state != THREAD_WAIT_CPU) |
cdce9d73 FW |
995 | return; |
996 | ||
b1ffe8f3 IM |
997 | if (timestamp < atom->wake_up_time) { |
998 | atom->state = THREAD_IGNORE; | |
cdce9d73 FW |
999 | return; |
1000 | } | |
1001 | ||
b1ffe8f3 IM |
1002 | atom->state = THREAD_SCHED_IN; |
1003 | atom->sched_in_time = timestamp; | |
66685678 | 1004 | |
b1ffe8f3 | 1005 | delta = atom->sched_in_time - atom->wake_up_time; |
66685678 | 1006 | atoms->total_lat += delta; |
3786310a | 1007 | if (delta > atoms->max_lat) { |
66685678 | 1008 | atoms->max_lat = delta; |
3786310a FW |
1009 | atoms->max_lat_at = timestamp; |
1010 | } | |
66685678 | 1011 | atoms->nb_atoms++; |
cdce9d73 FW |
1012 | } |
1013 | ||
a116e05d | 1014 | static int |
0e9b07e5 ACM |
1015 | latency_switch_event(struct perf_sched *sched, |
1016 | struct trace_switch_event *switch_event, | |
743eb868 | 1017 | struct machine *machine, |
1d037ca1 | 1018 | struct event_format *event __maybe_unused, |
7f7f8d0b | 1019 | struct perf_sample *sample) |
cdce9d73 | 1020 | { |
39aeb52f | 1021 | struct work_atoms *out_events, *in_events; |
cdce9d73 | 1022 | struct thread *sched_out, *sched_in; |
7f7f8d0b ACM |
1023 | u64 timestamp0, timestamp = sample->time; |
1024 | int cpu = sample->cpu; | |
ea92ed5a IM |
1025 | s64 delta; |
1026 | ||
39aeb52f | 1027 | BUG_ON(cpu >= MAX_CPUS || cpu < 0); |
ea92ed5a | 1028 | |
0e9b07e5 ACM |
1029 | timestamp0 = sched->cpu_last_switched[cpu]; |
1030 | sched->cpu_last_switched[cpu] = timestamp; | |
ea92ed5a IM |
1031 | if (timestamp0) |
1032 | delta = timestamp - timestamp0; | |
1033 | else | |
1034 | delta = 0; | |
1035 | ||
a116e05d ACM |
1036 | if (delta < 0) { |
1037 | pr_err("hm, delta: %" PRIu64 " < 0 ?\n", delta); | |
1038 | return -1; | |
1039 | } | |
cdce9d73 | 1040 | |
743eb868 ACM |
1041 | sched_out = machine__findnew_thread(machine, switch_event->prev_pid); |
1042 | sched_in = machine__findnew_thread(machine, switch_event->next_pid); | |
cdce9d73 | 1043 | |
0e9b07e5 | 1044 | out_events = thread_atoms_search(&sched->atom_root, sched_out, &sched->cmp_pid); |
39aeb52f | 1045 | if (!out_events) { |
0e9b07e5 | 1046 | if (thread_atoms_insert(sched, sched_out)) |
a116e05d | 1047 | return -1; |
0e9b07e5 | 1048 | out_events = thread_atoms_search(&sched->atom_root, sched_out, &sched->cmp_pid); |
a116e05d ACM |
1049 | if (!out_events) { |
1050 | pr_err("out-event: Internal tree error"); | |
1051 | return -1; | |
1052 | } | |
39aeb52f | 1053 | } |
a116e05d ACM |
1054 | if (add_sched_out_event(out_events, sched_out_state(switch_event), timestamp)) |
1055 | return -1; | |
39aeb52f | 1056 | |
0e9b07e5 | 1057 | in_events = thread_atoms_search(&sched->atom_root, sched_in, &sched->cmp_pid); |
39aeb52f | 1058 | if (!in_events) { |
0e9b07e5 | 1059 | if (thread_atoms_insert(sched, sched_in)) |
a116e05d | 1060 | return -1; |
0e9b07e5 | 1061 | in_events = thread_atoms_search(&sched->atom_root, sched_in, &sched->cmp_pid); |
a116e05d ACM |
1062 | if (!in_events) { |
1063 | pr_err("in-event: Internal tree error"); | |
1064 | return -1; | |
1065 | } | |
39aeb52f | 1066 | /* |
1067 | * Take came in we have not heard about yet, | |
1068 | * add in an initial atom in runnable state: | |
1069 | */ | |
a116e05d ACM |
1070 | if (add_sched_out_event(in_events, 'R', timestamp)) |
1071 | return -1; | |
cdce9d73 | 1072 | } |
39aeb52f | 1073 | add_sched_in_event(in_events, timestamp); |
a116e05d ACM |
1074 | |
1075 | return 0; | |
39aeb52f | 1076 | } |
cdce9d73 | 1077 | |
a116e05d | 1078 | static int |
0e9b07e5 ACM |
1079 | latency_runtime_event(struct perf_sched *sched, |
1080 | struct trace_runtime_event *runtime_event, | |
7f7f8d0b | 1081 | struct machine *machine, struct perf_sample *sample) |
39aeb52f | 1082 | { |
743eb868 | 1083 | struct thread *thread = machine__findnew_thread(machine, runtime_event->pid); |
0e9b07e5 | 1084 | struct work_atoms *atoms = thread_atoms_search(&sched->atom_root, thread, &sched->cmp_pid); |
7f7f8d0b ACM |
1085 | u64 timestamp = sample->time; |
1086 | int cpu = sample->cpu; | |
39aeb52f | 1087 | |
1088 | BUG_ON(cpu >= MAX_CPUS || cpu < 0); | |
39aeb52f | 1089 | if (!atoms) { |
0e9b07e5 | 1090 | if (thread_atoms_insert(sched, thread)) |
a116e05d | 1091 | return -1; |
0e9b07e5 | 1092 | atoms = thread_atoms_search(&sched->atom_root, thread, &sched->cmp_pid); |
a116e05d ACM |
1093 | if (!atoms) { |
1094 | pr_debug("in-event: Internal tree error"); | |
1095 | return -1; | |
1096 | } | |
1097 | if (add_sched_out_event(atoms, 'R', timestamp)) | |
1098 | return -1; | |
cdce9d73 FW |
1099 | } |
1100 | ||
39aeb52f | 1101 | add_runtime_event(atoms, runtime_event->runtime, timestamp); |
a116e05d | 1102 | return 0; |
cdce9d73 FW |
1103 | } |
1104 | ||
a116e05d | 1105 | static int |
0e9b07e5 ACM |
1106 | latency_wakeup_event(struct perf_sched *sched, |
1107 | struct trace_wakeup_event *wakeup_event, | |
1d037ca1 IT |
1108 | struct machine *machine, |
1109 | struct event_format *event __maybe_unused, | |
7f7f8d0b | 1110 | struct perf_sample *sample) |
cdce9d73 | 1111 | { |
39aeb52f | 1112 | struct work_atoms *atoms; |
b1ffe8f3 | 1113 | struct work_atom *atom; |
cdce9d73 | 1114 | struct thread *wakee; |
7f7f8d0b | 1115 | u64 timestamp = sample->time; |
cdce9d73 FW |
1116 | |
1117 | /* Note for later, it may be interesting to observe the failing cases */ | |
1118 | if (!wakeup_event->success) | |
a116e05d | 1119 | return 0; |
cdce9d73 | 1120 | |
743eb868 | 1121 | wakee = machine__findnew_thread(machine, wakeup_event->pid); |
0e9b07e5 | 1122 | atoms = thread_atoms_search(&sched->atom_root, wakee, &sched->cmp_pid); |
17562205 | 1123 | if (!atoms) { |
0e9b07e5 | 1124 | if (thread_atoms_insert(sched, wakee)) |
a116e05d | 1125 | return -1; |
0e9b07e5 | 1126 | atoms = thread_atoms_search(&sched->atom_root, wakee, &sched->cmp_pid); |
a116e05d ACM |
1127 | if (!atoms) { |
1128 | pr_debug("wakeup-event: Internal tree error"); | |
1129 | return -1; | |
1130 | } | |
1131 | if (add_sched_out_event(atoms, 'S', timestamp)) | |
1132 | return -1; | |
cdce9d73 FW |
1133 | } |
1134 | ||
39aeb52f | 1135 | BUG_ON(list_empty(&atoms->work_list)); |
cdce9d73 | 1136 | |
39aeb52f | 1137 | atom = list_entry(atoms->work_list.prev, struct work_atom, list); |
cdce9d73 | 1138 | |
55ffb7a6 MG |
1139 | /* |
1140 | * You WILL be missing events if you've recorded only | |
1141 | * one CPU, or are only looking at only one, so don't | |
1142 | * make useless noise. | |
1143 | */ | |
0e9b07e5 ACM |
1144 | if (sched->profile_cpu == -1 && atom->state != THREAD_SLEEPING) |
1145 | sched->nr_state_machine_bugs++; | |
cdce9d73 | 1146 | |
0e9b07e5 | 1147 | sched->nr_timestamps++; |
ea57c4f5 | 1148 | if (atom->sched_out_time > timestamp) { |
0e9b07e5 | 1149 | sched->nr_unordered_timestamps++; |
a116e05d | 1150 | return 0; |
ea57c4f5 | 1151 | } |
aa1ab9d2 | 1152 | |
b1ffe8f3 IM |
1153 | atom->state = THREAD_WAIT_CPU; |
1154 | atom->wake_up_time = timestamp; | |
a116e05d | 1155 | return 0; |
cdce9d73 FW |
1156 | } |
1157 | ||
a116e05d | 1158 | static int |
0e9b07e5 ACM |
1159 | latency_migrate_task_event(struct perf_sched *sched, |
1160 | struct trace_migrate_task_event *migrate_task_event, | |
7f7f8d0b | 1161 | struct machine *machine, struct perf_sample *sample) |
55ffb7a6 | 1162 | { |
7f7f8d0b | 1163 | u64 timestamp = sample->time; |
55ffb7a6 MG |
1164 | struct work_atoms *atoms; |
1165 | struct work_atom *atom; | |
1166 | struct thread *migrant; | |
1167 | ||
1168 | /* | |
1169 | * Only need to worry about migration when profiling one CPU. | |
1170 | */ | |
0e9b07e5 | 1171 | if (sched->profile_cpu == -1) |
a116e05d | 1172 | return 0; |
55ffb7a6 | 1173 | |
743eb868 | 1174 | migrant = machine__findnew_thread(machine, migrate_task_event->pid); |
0e9b07e5 | 1175 | atoms = thread_atoms_search(&sched->atom_root, migrant, &sched->cmp_pid); |
55ffb7a6 | 1176 | if (!atoms) { |
0e9b07e5 | 1177 | if (thread_atoms_insert(sched, migrant)) |
a116e05d | 1178 | return -1; |
0e9b07e5 ACM |
1179 | register_pid(sched, migrant->pid, migrant->comm); |
1180 | atoms = thread_atoms_search(&sched->atom_root, migrant, &sched->cmp_pid); | |
a116e05d ACM |
1181 | if (!atoms) { |
1182 | pr_debug("migration-event: Internal tree error"); | |
1183 | return -1; | |
1184 | } | |
1185 | if (add_sched_out_event(atoms, 'R', timestamp)) | |
1186 | return -1; | |
55ffb7a6 MG |
1187 | } |
1188 | ||
1189 | BUG_ON(list_empty(&atoms->work_list)); | |
1190 | ||
1191 | atom = list_entry(atoms->work_list.prev, struct work_atom, list); | |
1192 | atom->sched_in_time = atom->sched_out_time = atom->wake_up_time = timestamp; | |
1193 | ||
0e9b07e5 | 1194 | sched->nr_timestamps++; |
55ffb7a6 MG |
1195 | |
1196 | if (atom->sched_out_time > timestamp) | |
0e9b07e5 | 1197 | sched->nr_unordered_timestamps++; |
a116e05d ACM |
1198 | |
1199 | return 0; | |
55ffb7a6 MG |
1200 | } |
1201 | ||
0e9b07e5 | 1202 | static void output_lat_thread(struct perf_sched *sched, struct work_atoms *work_list) |
cdce9d73 | 1203 | { |
cdce9d73 FW |
1204 | int i; |
1205 | int ret; | |
66685678 | 1206 | u64 avg; |
cdce9d73 | 1207 | |
39aeb52f | 1208 | if (!work_list->nb_atoms) |
cdce9d73 | 1209 | return; |
ea57c4f5 IM |
1210 | /* |
1211 | * Ignore idle threads: | |
1212 | */ | |
80ed0987 | 1213 | if (!strcmp(work_list->thread->comm, "swapper")) |
ea57c4f5 | 1214 | return; |
cdce9d73 | 1215 | |
0e9b07e5 ACM |
1216 | sched->all_runtime += work_list->total_runtime; |
1217 | sched->all_count += work_list->nb_atoms; | |
66685678 | 1218 | |
80ed0987 | 1219 | ret = printf(" %s:%d ", work_list->thread->comm, work_list->thread->pid); |
cdce9d73 | 1220 | |
08f69e6c | 1221 | for (i = 0; i < 24 - ret; i++) |
cdce9d73 FW |
1222 | printf(" "); |
1223 | ||
39aeb52f | 1224 | avg = work_list->total_lat / work_list->nb_atoms; |
cdce9d73 | 1225 | |
9486aa38 | 1226 | printf("|%11.3f ms |%9" PRIu64 " | avg:%9.3f ms | max:%9.3f ms | max at: %9.6f s\n", |
39aeb52f | 1227 | (double)work_list->total_runtime / 1e6, |
1228 | work_list->nb_atoms, (double)avg / 1e6, | |
3786310a FW |
1229 | (double)work_list->max_lat / 1e6, |
1230 | (double)work_list->max_lat_at / 1e9); | |
cdce9d73 FW |
1231 | } |
1232 | ||
39aeb52f | 1233 | static int pid_cmp(struct work_atoms *l, struct work_atoms *r) |
daa1d7a5 | 1234 | { |
daa1d7a5 FW |
1235 | if (l->thread->pid < r->thread->pid) |
1236 | return -1; | |
1237 | if (l->thread->pid > r->thread->pid) | |
1238 | return 1; | |
1239 | ||
1240 | return 0; | |
1241 | } | |
1242 | ||
39aeb52f | 1243 | static int avg_cmp(struct work_atoms *l, struct work_atoms *r) |
daa1d7a5 FW |
1244 | { |
1245 | u64 avgl, avgr; | |
1246 | ||
1247 | if (!l->nb_atoms) | |
1248 | return -1; | |
1249 | ||
1250 | if (!r->nb_atoms) | |
1251 | return 1; | |
1252 | ||
1253 | avgl = l->total_lat / l->nb_atoms; | |
1254 | avgr = r->total_lat / r->nb_atoms; | |
1255 | ||
1256 | if (avgl < avgr) | |
1257 | return -1; | |
1258 | if (avgl > avgr) | |
1259 | return 1; | |
1260 | ||
1261 | return 0; | |
1262 | } | |
1263 | ||
39aeb52f | 1264 | static int max_cmp(struct work_atoms *l, struct work_atoms *r) |
daa1d7a5 FW |
1265 | { |
1266 | if (l->max_lat < r->max_lat) | |
1267 | return -1; | |
1268 | if (l->max_lat > r->max_lat) | |
1269 | return 1; | |
1270 | ||
1271 | return 0; | |
1272 | } | |
1273 | ||
39aeb52f | 1274 | static int switch_cmp(struct work_atoms *l, struct work_atoms *r) |
daa1d7a5 FW |
1275 | { |
1276 | if (l->nb_atoms < r->nb_atoms) | |
1277 | return -1; | |
1278 | if (l->nb_atoms > r->nb_atoms) | |
1279 | return 1; | |
1280 | ||
1281 | return 0; | |
1282 | } | |
1283 | ||
39aeb52f | 1284 | static int runtime_cmp(struct work_atoms *l, struct work_atoms *r) |
daa1d7a5 FW |
1285 | { |
1286 | if (l->total_runtime < r->total_runtime) | |
1287 | return -1; | |
1288 | if (l->total_runtime > r->total_runtime) | |
1289 | return 1; | |
1290 | ||
1291 | return 0; | |
1292 | } | |
1293 | ||
cbef79a8 | 1294 | static int sort_dimension__add(const char *tok, struct list_head *list) |
daa1d7a5 | 1295 | { |
0e9b07e5 ACM |
1296 | size_t i; |
1297 | static struct sort_dimension avg_sort_dimension = { | |
1298 | .name = "avg", | |
1299 | .cmp = avg_cmp, | |
1300 | }; | |
1301 | static struct sort_dimension max_sort_dimension = { | |
1302 | .name = "max", | |
1303 | .cmp = max_cmp, | |
1304 | }; | |
1305 | static struct sort_dimension pid_sort_dimension = { | |
1306 | .name = "pid", | |
1307 | .cmp = pid_cmp, | |
1308 | }; | |
1309 | static struct sort_dimension runtime_sort_dimension = { | |
1310 | .name = "runtime", | |
1311 | .cmp = runtime_cmp, | |
1312 | }; | |
1313 | static struct sort_dimension switch_sort_dimension = { | |
1314 | .name = "switch", | |
1315 | .cmp = switch_cmp, | |
1316 | }; | |
1317 | 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 | }; | |
daa1d7a5 | 1324 | |
0e9b07e5 | 1325 | for (i = 0; i < ARRAY_SIZE(available_sorts); i++) { |
daa1d7a5 FW |
1326 | if (!strcmp(available_sorts[i]->name, tok)) { |
1327 | list_add_tail(&available_sorts[i]->list, list); | |
1328 | ||
1329 | return 0; | |
1330 | } | |
1331 | } | |
1332 | ||
1333 | return -1; | |
1334 | } | |
1335 | ||
0e9b07e5 | 1336 | static void perf_sched__sort_lat(struct perf_sched *sched) |
daa1d7a5 FW |
1337 | { |
1338 | struct rb_node *node; | |
1339 | ||
1340 | for (;;) { | |
39aeb52f | 1341 | struct work_atoms *data; |
0e9b07e5 | 1342 | node = rb_first(&sched->atom_root); |
daa1d7a5 FW |
1343 | if (!node) |
1344 | break; | |
1345 | ||
0e9b07e5 | 1346 | rb_erase(node, &sched->atom_root); |
39aeb52f | 1347 | data = rb_entry(node, struct work_atoms, node); |
0e9b07e5 | 1348 | __thread_latency_insert(&sched->sorted_atom_root, data, &sched->sort_list); |
daa1d7a5 FW |
1349 | } |
1350 | } | |
1351 | ||
0e9b07e5 | 1352 | static int process_sched_wakeup_event(struct perf_tool *tool, |
1d037ca1 IT |
1353 | struct event_format *event, |
1354 | struct perf_sample *sample, | |
4218e673 | 1355 | struct machine *machine) |
419ab0d6 | 1356 | { |
0e9b07e5 | 1357 | struct perf_sched *sched = container_of(tool, struct perf_sched, tool); |
ee29be62 | 1358 | void *data = sample->raw_data; |
419ab0d6 | 1359 | struct trace_wakeup_event wakeup_event; |
a116e05d | 1360 | int err = 0; |
419ab0d6 | 1361 | |
f48f669d | 1362 | FILL_COMMON_FIELDS(wakeup_event, event, data); |
419ab0d6 | 1363 | |
f48f669d XG |
1364 | FILL_ARRAY(wakeup_event, comm, event, data); |
1365 | FILL_FIELD(wakeup_event, pid, event, data); | |
1366 | FILL_FIELD(wakeup_event, prio, event, data); | |
1367 | FILL_FIELD(wakeup_event, success, event, data); | |
1368 | FILL_FIELD(wakeup_event, cpu, event, data); | |
419ab0d6 | 1369 | |
0e9b07e5 ACM |
1370 | if (sched->tp_handler->wakeup_event) |
1371 | err = sched->tp_handler->wakeup_event(sched, &wakeup_event, machine, event, sample); | |
a116e05d ACM |
1372 | |
1373 | return err; | |
419ab0d6 FW |
1374 | } |
1375 | ||
a116e05d | 1376 | static int |
0e9b07e5 ACM |
1377 | map_switch_event(struct perf_sched *sched, |
1378 | struct trace_switch_event *switch_event, | |
743eb868 | 1379 | struct machine *machine, |
1d037ca1 | 1380 | struct event_format *event __maybe_unused, |
7f7f8d0b | 1381 | struct perf_sample *sample) |
0ec04e16 | 1382 | { |
1d037ca1 | 1383 | struct thread *sched_out __maybe_unused, *sched_in; |
0ec04e16 | 1384 | int new_shortname; |
7f7f8d0b | 1385 | u64 timestamp0, timestamp = sample->time; |
0ec04e16 | 1386 | s64 delta; |
7f7f8d0b | 1387 | int cpu, this_cpu = sample->cpu; |
0ec04e16 IM |
1388 | |
1389 | BUG_ON(this_cpu >= MAX_CPUS || this_cpu < 0); | |
1390 | ||
0e9b07e5 ACM |
1391 | if (this_cpu > sched->max_cpu) |
1392 | sched->max_cpu = this_cpu; | |
0ec04e16 | 1393 | |
0e9b07e5 ACM |
1394 | timestamp0 = sched->cpu_last_switched[this_cpu]; |
1395 | sched->cpu_last_switched[this_cpu] = timestamp; | |
0ec04e16 IM |
1396 | if (timestamp0) |
1397 | delta = timestamp - timestamp0; | |
1398 | else | |
1399 | delta = 0; | |
1400 | ||
a116e05d ACM |
1401 | if (delta < 0) { |
1402 | pr_debug("hm, delta: %" PRIu64 " < 0 ?\n", delta); | |
1403 | return -1; | |
1404 | } | |
0ec04e16 | 1405 | |
743eb868 ACM |
1406 | sched_out = machine__findnew_thread(machine, switch_event->prev_pid); |
1407 | sched_in = machine__findnew_thread(machine, switch_event->next_pid); | |
0ec04e16 | 1408 | |
0e9b07e5 | 1409 | sched->curr_thread[this_cpu] = sched_in; |
0ec04e16 IM |
1410 | |
1411 | printf(" "); | |
1412 | ||
1413 | new_shortname = 0; | |
1414 | if (!sched_in->shortname[0]) { | |
0e9b07e5 ACM |
1415 | sched_in->shortname[0] = sched->next_shortname1; |
1416 | sched_in->shortname[1] = sched->next_shortname2; | |
0ec04e16 | 1417 | |
0e9b07e5 ACM |
1418 | if (sched->next_shortname1 < 'Z') { |
1419 | sched->next_shortname1++; | |
0ec04e16 | 1420 | } else { |
0e9b07e5 ACM |
1421 | sched->next_shortname1='A'; |
1422 | if (sched->next_shortname2 < '9') { | |
1423 | sched->next_shortname2++; | |
0ec04e16 | 1424 | } else { |
0e9b07e5 | 1425 | sched->next_shortname2='0'; |
0ec04e16 IM |
1426 | } |
1427 | } | |
1428 | new_shortname = 1; | |
1429 | } | |
1430 | ||
0e9b07e5 | 1431 | for (cpu = 0; cpu <= sched->max_cpu; cpu++) { |
0ec04e16 IM |
1432 | if (cpu != this_cpu) |
1433 | printf(" "); | |
1434 | else | |
1435 | printf("*"); | |
1436 | ||
0e9b07e5 ACM |
1437 | if (sched->curr_thread[cpu]) { |
1438 | if (sched->curr_thread[cpu]->pid) | |
1439 | printf("%2s ", sched->curr_thread[cpu]->shortname); | |
0ec04e16 IM |
1440 | else |
1441 | printf(". "); | |
1442 | } else | |
1443 | printf(" "); | |
1444 | } | |
1445 | ||
1446 | printf(" %12.6f secs ", (double)timestamp/1e9); | |
1447 | if (new_shortname) { | |
1448 | printf("%s => %s:%d\n", | |
1449 | sched_in->shortname, sched_in->comm, sched_in->pid); | |
1450 | } else { | |
1451 | printf("\n"); | |
1452 | } | |
a116e05d ACM |
1453 | |
1454 | return 0; | |
0ec04e16 IM |
1455 | } |
1456 | ||
0e9b07e5 | 1457 | static int process_sched_switch_event(struct perf_tool *tool, |
1d037ca1 IT |
1458 | struct event_format *event, |
1459 | struct perf_sample *sample, | |
4218e673 | 1460 | struct machine *machine) |
419ab0d6 | 1461 | { |
0e9b07e5 | 1462 | struct perf_sched *sched = container_of(tool, struct perf_sched, tool); |
a116e05d | 1463 | int this_cpu = sample->cpu, err = 0; |
ee29be62 | 1464 | void *data = sample->raw_data; |
419ab0d6 FW |
1465 | struct trace_switch_event switch_event; |
1466 | ||
f48f669d | 1467 | FILL_COMMON_FIELDS(switch_event, event, data); |
419ab0d6 | 1468 | |
f48f669d XG |
1469 | FILL_ARRAY(switch_event, prev_comm, event, data); |
1470 | FILL_FIELD(switch_event, prev_pid, event, data); | |
1471 | FILL_FIELD(switch_event, prev_prio, event, data); | |
1472 | FILL_FIELD(switch_event, prev_state, event, data); | |
1473 | FILL_ARRAY(switch_event, next_comm, event, data); | |
1474 | FILL_FIELD(switch_event, next_pid, event, data); | |
1475 | FILL_FIELD(switch_event, next_prio, event, data); | |
419ab0d6 | 1476 | |
0e9b07e5 | 1477 | if (sched->curr_pid[this_cpu] != (u32)-1) { |
c8a37751 IM |
1478 | /* |
1479 | * Are we trying to switch away a PID that is | |
1480 | * not current? | |
1481 | */ | |
0e9b07e5 ACM |
1482 | if (sched->curr_pid[this_cpu] != switch_event.prev_pid) |
1483 | sched->nr_context_switch_bugs++; | |
c8a37751 | 1484 | } |
0e9b07e5 ACM |
1485 | if (sched->tp_handler->switch_event) |
1486 | err = sched->tp_handler->switch_event(sched, &switch_event, machine, event, sample); | |
c8a37751 | 1487 | |
0e9b07e5 | 1488 | sched->curr_pid[this_cpu] = switch_event.next_pid; |
a116e05d | 1489 | return err; |
419ab0d6 FW |
1490 | } |
1491 | ||
0e9b07e5 | 1492 | static int process_sched_runtime_event(struct perf_tool *tool, |
1d037ca1 IT |
1493 | struct event_format *event, |
1494 | struct perf_sample *sample, | |
4218e673 | 1495 | struct machine *machine) |
39aeb52f | 1496 | { |
0e9b07e5 | 1497 | struct perf_sched *sched = container_of(tool, struct perf_sched, tool); |
ee29be62 | 1498 | void *data = sample->raw_data; |
39aeb52f | 1499 | struct trace_runtime_event runtime_event; |
a116e05d | 1500 | int err = 0; |
39aeb52f | 1501 | |
f48f669d XG |
1502 | FILL_ARRAY(runtime_event, comm, event, data); |
1503 | FILL_FIELD(runtime_event, pid, event, data); | |
1504 | FILL_FIELD(runtime_event, runtime, event, data); | |
1505 | FILL_FIELD(runtime_event, vruntime, event, data); | |
39aeb52f | 1506 | |
0e9b07e5 ACM |
1507 | if (sched->tp_handler->runtime_event) |
1508 | err = sched->tp_handler->runtime_event(sched, &runtime_event, machine, sample); | |
a116e05d ACM |
1509 | |
1510 | return err; | |
39aeb52f | 1511 | } |
1512 | ||
0e9b07e5 | 1513 | static int process_sched_fork_event(struct perf_tool *tool, |
1d037ca1 IT |
1514 | struct event_format *event, |
1515 | struct perf_sample *sample, | |
4218e673 | 1516 | struct machine *machine __maybe_unused) |
fbf94829 | 1517 | { |
0e9b07e5 | 1518 | struct perf_sched *sched = container_of(tool, struct perf_sched, tool); |
ee29be62 | 1519 | void *data = sample->raw_data; |
46538818 | 1520 | struct trace_fork_event fork_event; |
a116e05d | 1521 | int err = 0; |
46538818 | 1522 | |
f48f669d | 1523 | FILL_COMMON_FIELDS(fork_event, event, data); |
46538818 | 1524 | |
f48f669d XG |
1525 | FILL_ARRAY(fork_event, parent_comm, event, data); |
1526 | FILL_FIELD(fork_event, parent_pid, event, data); | |
1527 | FILL_ARRAY(fork_event, child_comm, event, data); | |
1528 | FILL_FIELD(fork_event, child_pid, event, data); | |
46538818 | 1529 | |
0e9b07e5 ACM |
1530 | if (sched->tp_handler->fork_event) |
1531 | err = sched->tp_handler->fork_event(sched, &fork_event, event); | |
a116e05d ACM |
1532 | |
1533 | return err; | |
fbf94829 IM |
1534 | } |
1535 | ||
1d037ca1 IT |
1536 | static int process_sched_exit_event(struct perf_tool *tool __maybe_unused, |
1537 | struct event_format *event, | |
1538 | struct perf_sample *sample __maybe_unused, | |
4218e673 | 1539 | struct machine *machine __maybe_unused) |
fbf94829 | 1540 | { |
ad236fd2 IM |
1541 | if (verbose) |
1542 | printf("sched_exit event %p\n", event); | |
a116e05d ACM |
1543 | |
1544 | return 0; | |
ec156764 IM |
1545 | } |
1546 | ||
0e9b07e5 | 1547 | static int process_sched_migrate_task_event(struct perf_tool *tool, |
1d037ca1 IT |
1548 | struct event_format *event, |
1549 | struct perf_sample *sample, | |
4218e673 | 1550 | struct machine *machine) |
55ffb7a6 | 1551 | { |
0e9b07e5 | 1552 | struct perf_sched *sched = container_of(tool, struct perf_sched, tool); |
ee29be62 | 1553 | void *data = sample->raw_data; |
55ffb7a6 | 1554 | struct trace_migrate_task_event migrate_task_event; |
a116e05d | 1555 | int err = 0; |
55ffb7a6 | 1556 | |
f48f669d | 1557 | FILL_COMMON_FIELDS(migrate_task_event, event, data); |
55ffb7a6 | 1558 | |
f48f669d XG |
1559 | FILL_ARRAY(migrate_task_event, comm, event, data); |
1560 | FILL_FIELD(migrate_task_event, pid, event, data); | |
1561 | FILL_FIELD(migrate_task_event, prio, event, data); | |
1562 | FILL_FIELD(migrate_task_event, cpu, event, data); | |
55ffb7a6 | 1563 | |
0e9b07e5 ACM |
1564 | if (sched->tp_handler->migrate_task_event) |
1565 | err = sched->tp_handler->migrate_task_event(sched, &migrate_task_event, machine, sample); | |
a116e05d ACM |
1566 | |
1567 | return err; | |
55ffb7a6 MG |
1568 | } |
1569 | ||
a116e05d ACM |
1570 | typedef int (*tracepoint_handler)(struct perf_tool *tool, |
1571 | struct event_format *tp_format, | |
1572 | struct perf_sample *sample, | |
4218e673 | 1573 | struct machine *machine); |
ec156764 | 1574 | |
1d037ca1 IT |
1575 | static int perf_sched__process_tracepoint_sample(struct perf_tool *tool __maybe_unused, |
1576 | union perf_event *event __maybe_unused, | |
ee29be62 ACM |
1577 | struct perf_sample *sample, |
1578 | struct perf_evsel *evsel, | |
1579 | struct machine *machine) | |
0a02ad93 | 1580 | { |
ee29be62 | 1581 | struct thread *thread = machine__findnew_thread(machine, sample->pid); |
a116e05d | 1582 | int err = 0; |
0a02ad93 | 1583 | |
0a02ad93 | 1584 | if (thread == NULL) { |
ee29be62 | 1585 | pr_debug("problem processing %s event, skipping it.\n", |
22c8b843 | 1586 | perf_evsel__name(evsel)); |
0a02ad93 IM |
1587 | return -1; |
1588 | } | |
1589 | ||
ee29be62 ACM |
1590 | evsel->hists.stats.total_period += sample->period; |
1591 | hists__inc_nr_events(&evsel->hists, PERF_RECORD_SAMPLE); | |
f39cdf25 | 1592 | |
ee29be62 ACM |
1593 | if (evsel->handler.func != NULL) { |
1594 | tracepoint_handler f = evsel->handler.func; | |
4218e673 | 1595 | err = f(tool, evsel->tp_format, sample, machine); |
ee29be62 | 1596 | } |
0a02ad93 | 1597 | |
a116e05d | 1598 | return err; |
0a02ad93 IM |
1599 | } |
1600 | ||
0e9b07e5 ACM |
1601 | static int perf_sched__read_events(struct perf_sched *sched, bool destroy, |
1602 | struct perf_session **psession) | |
0a02ad93 | 1603 | { |
ee29be62 ACM |
1604 | const struct perf_evsel_str_handler handlers[] = { |
1605 | { "sched:sched_switch", process_sched_switch_event, }, | |
1606 | { "sched:sched_stat_runtime", process_sched_runtime_event, }, | |
1607 | { "sched:sched_wakeup", process_sched_wakeup_event, }, | |
1608 | { "sched:sched_wakeup_new", process_sched_wakeup_event, }, | |
1609 | { "sched:sched_process_fork", process_sched_fork_event, }, | |
1610 | { "sched:sched_process_exit", process_sched_exit_event, }, | |
1611 | { "sched:sched_migrate_task", process_sched_migrate_task_event, }, | |
1612 | }; | |
da378962 ACM |
1613 | struct perf_session *session; |
1614 | ||
0e9b07e5 | 1615 | session = perf_session__new(sched->input_name, O_RDONLY, 0, false, &sched->tool); |
a116e05d ACM |
1616 | if (session == NULL) { |
1617 | pr_debug("No Memory for session\n"); | |
1618 | return -1; | |
1619 | } | |
94c744b6 | 1620 | |
a116e05d ACM |
1621 | if (perf_session__set_tracepoints_handlers(session, handlers)) |
1622 | goto out_delete; | |
ee29be62 | 1623 | |
cee75ac7 | 1624 | if (perf_session__has_traces(session, "record -R")) { |
0e9b07e5 | 1625 | int err = perf_session__process_events(session, &sched->tool); |
a116e05d ACM |
1626 | if (err) { |
1627 | pr_err("Failed to process events, error %d", err); | |
1628 | goto out_delete; | |
1629 | } | |
4c09bafa | 1630 | |
0e9b07e5 ACM |
1631 | sched->nr_events = session->hists.stats.nr_events[0]; |
1632 | sched->nr_lost_events = session->hists.stats.total_lost; | |
1633 | sched->nr_lost_chunks = session->hists.stats.nr_events[PERF_RECORD_LOST]; | |
cee75ac7 | 1634 | } |
d549c769 | 1635 | |
4c09bafa JO |
1636 | if (destroy) |
1637 | perf_session__delete(session); | |
1638 | ||
1639 | if (psession) | |
1640 | *psession = session; | |
a116e05d ACM |
1641 | |
1642 | return 0; | |
1643 | ||
1644 | out_delete: | |
1645 | perf_session__delete(session); | |
1646 | return -1; | |
0a02ad93 IM |
1647 | } |
1648 | ||
0e9b07e5 | 1649 | static void print_bad_events(struct perf_sched *sched) |
0ec04e16 | 1650 | { |
0e9b07e5 | 1651 | if (sched->nr_unordered_timestamps && sched->nr_timestamps) { |
0ec04e16 | 1652 | printf(" INFO: %.3f%% unordered timestamps (%ld out of %ld)\n", |
0e9b07e5 ACM |
1653 | (double)sched->nr_unordered_timestamps/(double)sched->nr_timestamps*100.0, |
1654 | sched->nr_unordered_timestamps, sched->nr_timestamps); | |
0ec04e16 | 1655 | } |
0e9b07e5 | 1656 | if (sched->nr_lost_events && sched->nr_events) { |
0ec04e16 | 1657 | printf(" INFO: %.3f%% lost events (%ld out of %ld, in %ld chunks)\n", |
0e9b07e5 ACM |
1658 | (double)sched->nr_lost_events/(double)sched->nr_events * 100.0, |
1659 | sched->nr_lost_events, sched->nr_events, sched->nr_lost_chunks); | |
0ec04e16 | 1660 | } |
0e9b07e5 | 1661 | if (sched->nr_state_machine_bugs && sched->nr_timestamps) { |
0ec04e16 | 1662 | printf(" INFO: %.3f%% state machine bugs (%ld out of %ld)", |
0e9b07e5 ACM |
1663 | (double)sched->nr_state_machine_bugs/(double)sched->nr_timestamps*100.0, |
1664 | sched->nr_state_machine_bugs, sched->nr_timestamps); | |
1665 | if (sched->nr_lost_events) | |
0ec04e16 IM |
1666 | printf(" (due to lost events?)"); |
1667 | printf("\n"); | |
1668 | } | |
0e9b07e5 | 1669 | if (sched->nr_context_switch_bugs && sched->nr_timestamps) { |
0ec04e16 | 1670 | printf(" INFO: %.3f%% context switch bugs (%ld out of %ld)", |
0e9b07e5 ACM |
1671 | (double)sched->nr_context_switch_bugs/(double)sched->nr_timestamps*100.0, |
1672 | sched->nr_context_switch_bugs, sched->nr_timestamps); | |
1673 | if (sched->nr_lost_events) | |
0ec04e16 IM |
1674 | printf(" (due to lost events?)"); |
1675 | printf("\n"); | |
1676 | } | |
1677 | } | |
1678 | ||
0e9b07e5 | 1679 | static int perf_sched__lat(struct perf_sched *sched) |
0ec04e16 IM |
1680 | { |
1681 | struct rb_node *next; | |
4c09bafa | 1682 | struct perf_session *session; |
0ec04e16 IM |
1683 | |
1684 | setup_pager(); | |
0e9b07e5 | 1685 | if (perf_sched__read_events(sched, false, &session)) |
a116e05d | 1686 | return -1; |
0e9b07e5 | 1687 | perf_sched__sort_lat(sched); |
0ec04e16 | 1688 | |
3786310a FW |
1689 | printf("\n ---------------------------------------------------------------------------------------------------------------\n"); |
1690 | printf(" Task | Runtime ms | Switches | Average delay ms | Maximum delay ms | Maximum delay at |\n"); | |
1691 | printf(" ---------------------------------------------------------------------------------------------------------------\n"); | |
0ec04e16 | 1692 | |
0e9b07e5 | 1693 | next = rb_first(&sched->sorted_atom_root); |
0ec04e16 IM |
1694 | |
1695 | while (next) { | |
1696 | struct work_atoms *work_list; | |
1697 | ||
1698 | work_list = rb_entry(next, struct work_atoms, node); | |
0e9b07e5 | 1699 | output_lat_thread(sched, work_list); |
0ec04e16 IM |
1700 | next = rb_next(next); |
1701 | } | |
1702 | ||
1703 | printf(" -----------------------------------------------------------------------------------------\n"); | |
9486aa38 | 1704 | printf(" TOTAL: |%11.3f ms |%9" PRIu64 " |\n", |
0e9b07e5 | 1705 | (double)sched->all_runtime / 1e6, sched->all_count); |
0ec04e16 IM |
1706 | |
1707 | printf(" ---------------------------------------------------\n"); | |
1708 | ||
0e9b07e5 | 1709 | print_bad_events(sched); |
0ec04e16 IM |
1710 | printf("\n"); |
1711 | ||
4c09bafa | 1712 | perf_session__delete(session); |
a116e05d | 1713 | return 0; |
0ec04e16 IM |
1714 | } |
1715 | ||
0e9b07e5 | 1716 | static int perf_sched__map(struct perf_sched *sched) |
0ec04e16 | 1717 | { |
0e9b07e5 | 1718 | sched->max_cpu = sysconf(_SC_NPROCESSORS_CONF); |
40749d0f | 1719 | |
0ec04e16 | 1720 | setup_pager(); |
0e9b07e5 | 1721 | if (perf_sched__read_events(sched, true, NULL)) |
a116e05d | 1722 | return -1; |
0e9b07e5 | 1723 | print_bad_events(sched); |
a116e05d | 1724 | return 0; |
0ec04e16 IM |
1725 | } |
1726 | ||
0e9b07e5 | 1727 | static int perf_sched__replay(struct perf_sched *sched) |
0ec04e16 IM |
1728 | { |
1729 | unsigned long i; | |
1730 | ||
0e9b07e5 ACM |
1731 | calibrate_run_measurement_overhead(sched); |
1732 | calibrate_sleep_measurement_overhead(sched); | |
0ec04e16 | 1733 | |
0e9b07e5 | 1734 | test_calibrations(sched); |
0ec04e16 | 1735 | |
0e9b07e5 | 1736 | if (perf_sched__read_events(sched, true, NULL)) |
a116e05d | 1737 | return -1; |
0ec04e16 | 1738 | |
0e9b07e5 ACM |
1739 | printf("nr_run_events: %ld\n", sched->nr_run_events); |
1740 | printf("nr_sleep_events: %ld\n", sched->nr_sleep_events); | |
1741 | printf("nr_wakeup_events: %ld\n", sched->nr_wakeup_events); | |
0ec04e16 | 1742 | |
0e9b07e5 ACM |
1743 | if (sched->targetless_wakeups) |
1744 | printf("target-less wakeups: %ld\n", sched->targetless_wakeups); | |
1745 | if (sched->multitarget_wakeups) | |
1746 | printf("multi-target wakeups: %ld\n", sched->multitarget_wakeups); | |
1747 | if (sched->nr_run_events_optimized) | |
0ec04e16 | 1748 | printf("run atoms optimized: %ld\n", |
0e9b07e5 | 1749 | sched->nr_run_events_optimized); |
0ec04e16 | 1750 | |
0e9b07e5 ACM |
1751 | print_task_traces(sched); |
1752 | add_cross_task_wakeups(sched); | |
0ec04e16 | 1753 | |
0e9b07e5 | 1754 | create_tasks(sched); |
0ec04e16 | 1755 | printf("------------------------------------------------------------\n"); |
0e9b07e5 ACM |
1756 | for (i = 0; i < sched->replay_repeat; i++) |
1757 | run_one_test(sched); | |
a116e05d ACM |
1758 | |
1759 | return 0; | |
0ec04e16 IM |
1760 | } |
1761 | ||
0e9b07e5 ACM |
1762 | static void setup_sorting(struct perf_sched *sched, const struct option *options, |
1763 | const char * const usage_msg[]) | |
daa1d7a5 | 1764 | { |
0e9b07e5 | 1765 | char *tmp, *tok, *str = strdup(sched->sort_order); |
daa1d7a5 FW |
1766 | |
1767 | for (tok = strtok_r(str, ", ", &tmp); | |
1768 | tok; tok = strtok_r(NULL, ", ", &tmp)) { | |
0e9b07e5 | 1769 | if (sort_dimension__add(tok, &sched->sort_list) < 0) { |
daa1d7a5 | 1770 | error("Unknown --sort key: `%s'", tok); |
0e9b07e5 | 1771 | usage_with_options(usage_msg, options); |
daa1d7a5 FW |
1772 | } |
1773 | } | |
1774 | ||
1775 | free(str); | |
1776 | ||
0e9b07e5 | 1777 | sort_dimension__add("pid", &sched->cmp_pid); |
daa1d7a5 FW |
1778 | } |
1779 | ||
1fc35b29 IM |
1780 | static int __cmd_record(int argc, const char **argv) |
1781 | { | |
1782 | unsigned int rec_argc, i, j; | |
1783 | const char **rec_argv; | |
0e9b07e5 ACM |
1784 | const char * const record_args[] = { |
1785 | "record", | |
1786 | "-a", | |
1787 | "-R", | |
1788 | "-f", | |
1789 | "-m", "1024", | |
1790 | "-c", "1", | |
1791 | "-e", "sched:sched_switch", | |
1792 | "-e", "sched:sched_stat_wait", | |
1793 | "-e", "sched:sched_stat_sleep", | |
1794 | "-e", "sched:sched_stat_iowait", | |
1795 | "-e", "sched:sched_stat_runtime", | |
1796 | "-e", "sched:sched_process_exit", | |
1797 | "-e", "sched:sched_process_fork", | |
1798 | "-e", "sched:sched_wakeup", | |
1799 | "-e", "sched:sched_migrate_task", | |
1800 | }; | |
1fc35b29 IM |
1801 | |
1802 | rec_argc = ARRAY_SIZE(record_args) + argc - 1; | |
1803 | rec_argv = calloc(rec_argc + 1, sizeof(char *)); | |
1804 | ||
e462dc55 | 1805 | if (rec_argv == NULL) |
ce47dc56 CS |
1806 | return -ENOMEM; |
1807 | ||
1fc35b29 IM |
1808 | for (i = 0; i < ARRAY_SIZE(record_args); i++) |
1809 | rec_argv[i] = strdup(record_args[i]); | |
1810 | ||
1811 | for (j = 1; j < (unsigned int)argc; j++, i++) | |
1812 | rec_argv[i] = argv[j]; | |
1813 | ||
1814 | BUG_ON(i != rec_argc); | |
1815 | ||
1816 | return cmd_record(i, rec_argv, NULL); | |
1817 | } | |
1818 | ||
1d037ca1 | 1819 | int cmd_sched(int argc, const char **argv, const char *prefix __maybe_unused) |
0a02ad93 | 1820 | { |
0e9b07e5 ACM |
1821 | const char default_sort_order[] = "avg, max, switch, runtime"; |
1822 | struct perf_sched sched = { | |
1823 | .tool = { | |
1824 | .sample = perf_sched__process_tracepoint_sample, | |
1825 | .comm = perf_event__process_comm, | |
1826 | .lost = perf_event__process_lost, | |
1827 | .fork = perf_event__process_task, | |
1828 | .ordered_samples = true, | |
1829 | }, | |
1830 | .cmp_pid = LIST_HEAD_INIT(sched.cmp_pid), | |
1831 | .sort_list = LIST_HEAD_INIT(sched.sort_list), | |
1832 | .start_work_mutex = PTHREAD_MUTEX_INITIALIZER, | |
1833 | .work_done_wait_mutex = PTHREAD_MUTEX_INITIALIZER, | |
1834 | .curr_pid = { [0 ... MAX_CPUS - 1] = -1 }, | |
1835 | .sort_order = default_sort_order, | |
1836 | .replay_repeat = 10, | |
1837 | .profile_cpu = -1, | |
1838 | .next_shortname1 = 'A', | |
1839 | .next_shortname2 = '0', | |
1840 | }; | |
1841 | const struct option latency_options[] = { | |
1842 | OPT_STRING('s', "sort", &sched.sort_order, "key[,key2...]", | |
1843 | "sort by key(s): runtime, switch, avg, max"), | |
1844 | OPT_INCR('v', "verbose", &verbose, | |
1845 | "be more verbose (show symbol address, etc)"), | |
1846 | OPT_INTEGER('C', "CPU", &sched.profile_cpu, | |
1847 | "CPU to profile on"), | |
1848 | OPT_BOOLEAN('D', "dump-raw-trace", &dump_trace, | |
1849 | "dump raw trace in ASCII"), | |
1850 | OPT_END() | |
1851 | }; | |
1852 | const struct option replay_options[] = { | |
1853 | OPT_UINTEGER('r', "repeat", &sched.replay_repeat, | |
1854 | "repeat the workload replay N times (-1: infinite)"), | |
1855 | OPT_INCR('v', "verbose", &verbose, | |
1856 | "be more verbose (show symbol address, etc)"), | |
1857 | OPT_BOOLEAN('D', "dump-raw-trace", &dump_trace, | |
1858 | "dump raw trace in ASCII"), | |
1859 | OPT_END() | |
1860 | }; | |
1861 | const struct option sched_options[] = { | |
1862 | OPT_STRING('i', "input", &sched.input_name, "file", | |
1863 | "input file name"), | |
1864 | OPT_INCR('v', "verbose", &verbose, | |
1865 | "be more verbose (show symbol address, etc)"), | |
1866 | OPT_BOOLEAN('D', "dump-raw-trace", &dump_trace, | |
1867 | "dump raw trace in ASCII"), | |
1868 | OPT_END() | |
1869 | }; | |
1870 | const char * const latency_usage[] = { | |
1871 | "perf sched latency [<options>]", | |
1872 | NULL | |
1873 | }; | |
1874 | const char * const replay_usage[] = { | |
1875 | "perf sched replay [<options>]", | |
1876 | NULL | |
1877 | }; | |
1878 | const char * const sched_usage[] = { | |
1879 | "perf sched [<options>] {record|latency|map|replay|script}", | |
1880 | NULL | |
1881 | }; | |
1882 | struct trace_sched_handler lat_ops = { | |
1883 | .wakeup_event = latency_wakeup_event, | |
1884 | .switch_event = latency_switch_event, | |
1885 | .runtime_event = latency_runtime_event, | |
1886 | .fork_event = latency_fork_event, | |
1887 | .migrate_task_event = latency_migrate_task_event, | |
1888 | }; | |
1889 | struct trace_sched_handler map_ops = { | |
1890 | .switch_event = map_switch_event, | |
1891 | }; | |
1892 | struct trace_sched_handler replay_ops = { | |
1893 | .wakeup_event = replay_wakeup_event, | |
1894 | .switch_event = replay_switch_event, | |
1895 | .fork_event = replay_fork_event, | |
1896 | }; | |
1897 | ||
f2858d8a IM |
1898 | argc = parse_options(argc, argv, sched_options, sched_usage, |
1899 | PARSE_OPT_STOP_AT_NON_OPTION); | |
1900 | if (!argc) | |
1901 | usage_with_options(sched_usage, sched_options); | |
0a02ad93 | 1902 | |
c0777c5a | 1903 | /* |
133dc4c3 | 1904 | * Aliased to 'perf script' for now: |
c0777c5a | 1905 | */ |
133dc4c3 IM |
1906 | if (!strcmp(argv[0], "script")) |
1907 | return cmd_script(argc, argv, prefix); | |
c0777c5a | 1908 | |
75be6cf4 | 1909 | symbol__init(); |
1fc35b29 IM |
1910 | if (!strncmp(argv[0], "rec", 3)) { |
1911 | return __cmd_record(argc, argv); | |
1912 | } else if (!strncmp(argv[0], "lat", 3)) { | |
0e9b07e5 | 1913 | sched.tp_handler = &lat_ops; |
f2858d8a IM |
1914 | if (argc > 1) { |
1915 | argc = parse_options(argc, argv, latency_options, latency_usage, 0); | |
1916 | if (argc) | |
1917 | usage_with_options(latency_usage, latency_options); | |
f2858d8a | 1918 | } |
0e9b07e5 ACM |
1919 | setup_sorting(&sched, latency_options, latency_usage); |
1920 | return perf_sched__lat(&sched); | |
0ec04e16 | 1921 | } else if (!strcmp(argv[0], "map")) { |
0e9b07e5 ACM |
1922 | sched.tp_handler = &map_ops; |
1923 | setup_sorting(&sched, latency_options, latency_usage); | |
1924 | return perf_sched__map(&sched); | |
f2858d8a | 1925 | } else if (!strncmp(argv[0], "rep", 3)) { |
0e9b07e5 | 1926 | sched.tp_handler = &replay_ops; |
f2858d8a IM |
1927 | if (argc) { |
1928 | argc = parse_options(argc, argv, replay_options, replay_usage, 0); | |
1929 | if (argc) | |
1930 | usage_with_options(replay_usage, replay_options); | |
1931 | } | |
0e9b07e5 | 1932 | return perf_sched__replay(&sched); |
f2858d8a IM |
1933 | } else { |
1934 | usage_with_options(sched_usage, sched_options); | |
1935 | } | |
1936 | ||
ec156764 | 1937 | return 0; |
0a02ad93 | 1938 | } |