Merge git://git.kvack.org/~bcrl/aio-next
[deliverable/linux.git] / tools / perf / builtin-sched.c
CommitLineData
0a02ad93 1#include "builtin.h"
b1ffe8f3 2#include "perf.h"
0a02ad93
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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
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13
14#include "util/parse-options.h"
b1ffe8f3 15#include "util/trace-event.h"
0a02ad93 16
0a02ad93
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17#include "util/debug.h"
18
b1ffe8f3 19#include <sys/prctl.h>
7b78f136 20#include <sys/resource.h>
0a02ad93 21
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22#include <semaphore.h>
23#include <pthread.h>
24#include <math.h>
419ab0d6 25
b1ffe8f3
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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 32struct sched_atom;
ec156764 33
b1ffe8f3
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34struct task_desc {
35 unsigned long nr;
36 unsigned long pid;
37 char comm[COMM_LEN];
ec156764 38
b1ffe8f3
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39 unsigned long nr_events;
40 unsigned long curr_event;
39aeb52f 41 struct sched_atom **atoms;
b1ffe8f3
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42
43 pthread_t thread;
44 sem_t sleep_sem;
ec156764 45
b1ffe8f3
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46 sem_t ready_for_work;
47 sem_t work_done_sem;
48
49 u64 cpu_usage;
50};
51
52enum 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 59struct 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
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65 sem_t *wait_sem;
66 struct task_desc *wakee;
67};
68
b1ffe8f3
IM
69#define TASK_STATE_TO_CHAR_STR "RSDTtZX"
70
71enum thread_state {
72 THREAD_SLEEPING = 0,
73 THREAD_WAIT_CPU,
74 THREAD_SCHED_IN,
75 THREAD_IGNORE
76};
77
78struct 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 87struct work_atoms {
88 struct list_head work_list;
b1ffe8f3
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89 struct thread *thread;
90 struct rb_node node;
91 u64 max_lat;
3786310a 92 u64 max_lat_at;
b1ffe8f3
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93 u64 total_lat;
94 u64 nb_atoms;
95 u64 total_runtime;
96};
97
39aeb52f 98typedef int (*sort_fn_t)(struct work_atoms *, struct work_atoms *);
b1ffe8f3 99
9ec3f4e4 100struct perf_sched;
0e9b07e5 101
9ec3f4e4
ACM
102struct trace_sched_handler {
103 int (*switch_event)(struct perf_sched *sched, struct perf_evsel *evsel,
104 struct perf_sample *sample, struct machine *machine);
0e9b07e5 105
9ec3f4e4
ACM
106 int (*runtime_event)(struct perf_sched *sched, struct perf_evsel *evsel,
107 struct perf_sample *sample, struct machine *machine);
0e9b07e5 108
9ec3f4e4
ACM
109 int (*wakeup_event)(struct perf_sched *sched, struct perf_evsel *evsel,
110 struct perf_sample *sample, struct machine *machine);
0e9b07e5 111
cb627505
DA
112 /* PERF_RECORD_FORK event, not sched_process_fork tracepoint */
113 int (*fork_event)(struct perf_sched *sched, union perf_event *event,
114 struct machine *machine);
0e9b07e5
ACM
115
116 int (*migrate_task_event)(struct perf_sched *sched,
9ec3f4e4
ACM
117 struct perf_evsel *evsel,
118 struct perf_sample *sample,
119 struct machine *machine);
0e9b07e5
ACM
120};
121
122struct perf_sched {
123 struct perf_tool tool;
0e9b07e5
ACM
124 const char *sort_order;
125 unsigned long nr_tasks;
126 struct task_desc *pid_to_task[MAX_PID];
127 struct task_desc **tasks;
128 const struct trace_sched_handler *tp_handler;
129 pthread_mutex_t start_work_mutex;
130 pthread_mutex_t work_done_wait_mutex;
131 int profile_cpu;
132/*
133 * Track the current task - that way we can know whether there's any
134 * weird events, such as a task being switched away that is not current.
135 */
136 int max_cpu;
137 u32 curr_pid[MAX_CPUS];
138 struct thread *curr_thread[MAX_CPUS];
139 char next_shortname1;
140 char next_shortname2;
141 unsigned int replay_repeat;
142 unsigned long nr_run_events;
143 unsigned long nr_sleep_events;
144 unsigned long nr_wakeup_events;
145 unsigned long nr_sleep_corrections;
146 unsigned long nr_run_events_optimized;
147 unsigned long targetless_wakeups;
148 unsigned long multitarget_wakeups;
149 unsigned long nr_runs;
150 unsigned long nr_timestamps;
151 unsigned long nr_unordered_timestamps;
152 unsigned long nr_state_machine_bugs;
153 unsigned long nr_context_switch_bugs;
154 unsigned long nr_events;
155 unsigned long nr_lost_chunks;
156 unsigned long nr_lost_events;
157 u64 run_measurement_overhead;
158 u64 sleep_measurement_overhead;
159 u64 start_time;
160 u64 cpu_usage;
161 u64 runavg_cpu_usage;
162 u64 parent_cpu_usage;
163 u64 runavg_parent_cpu_usage;
164 u64 sum_runtime;
165 u64 sum_fluct;
166 u64 run_avg;
167 u64 all_runtime;
168 u64 all_count;
169 u64 cpu_last_switched[MAX_CPUS];
170 struct rb_root atom_root, sorted_atom_root;
171 struct list_head sort_list, cmp_pid;
172};
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173
174static u64 get_nsecs(void)
ec156764
IM
175{
176 struct timespec ts;
177
178 clock_gettime(CLOCK_MONOTONIC, &ts);
179
180 return ts.tv_sec * 1000000000ULL + ts.tv_nsec;
181}
182
0e9b07e5 183static void burn_nsecs(struct perf_sched *sched, u64 nsecs)
ec156764 184{
b1ffe8f3 185 u64 T0 = get_nsecs(), T1;
ec156764
IM
186
187 do {
188 T1 = get_nsecs();
0e9b07e5 189 } while (T1 + sched->run_measurement_overhead < T0 + nsecs);
ec156764
IM
190}
191
b1ffe8f3 192static void sleep_nsecs(u64 nsecs)
ec156764
IM
193{
194 struct timespec ts;
195
196 ts.tv_nsec = nsecs % 999999999;
197 ts.tv_sec = nsecs / 999999999;
198
199 nanosleep(&ts, NULL);
200}
201
0e9b07e5 202static void calibrate_run_measurement_overhead(struct perf_sched *sched)
ec156764 203{
b1ffe8f3 204 u64 T0, T1, delta, min_delta = 1000000000ULL;
ec156764
IM
205 int i;
206
207 for (i = 0; i < 10; i++) {
208 T0 = get_nsecs();
0e9b07e5 209 burn_nsecs(sched, 0);
ec156764
IM
210 T1 = get_nsecs();
211 delta = T1-T0;
212 min_delta = min(min_delta, delta);
213 }
0e9b07e5 214 sched->run_measurement_overhead = min_delta;
ec156764 215
9486aa38 216 printf("run measurement overhead: %" PRIu64 " nsecs\n", min_delta);
ec156764
IM
217}
218
0e9b07e5 219static void calibrate_sleep_measurement_overhead(struct perf_sched *sched)
ec156764 220{
b1ffe8f3 221 u64 T0, T1, delta, min_delta = 1000000000ULL;
ec156764
IM
222 int i;
223
224 for (i = 0; i < 10; i++) {
225 T0 = get_nsecs();
226 sleep_nsecs(10000);
227 T1 = get_nsecs();
228 delta = T1-T0;
229 min_delta = min(min_delta, delta);
230 }
231 min_delta -= 10000;
0e9b07e5 232 sched->sleep_measurement_overhead = min_delta;
ec156764 233
9486aa38 234 printf("sleep measurement overhead: %" PRIu64 " nsecs\n", min_delta);
ec156764
IM
235}
236
39aeb52f 237static struct sched_atom *
b1ffe8f3 238get_new_event(struct task_desc *task, u64 timestamp)
ec156764 239{
36479484 240 struct sched_atom *event = zalloc(sizeof(*event));
ec156764
IM
241 unsigned long idx = task->nr_events;
242 size_t size;
243
244 event->timestamp = timestamp;
245 event->nr = idx;
246
247 task->nr_events++;
39aeb52f 248 size = sizeof(struct sched_atom *) * task->nr_events;
249 task->atoms = realloc(task->atoms, size);
250 BUG_ON(!task->atoms);
ec156764 251
39aeb52f 252 task->atoms[idx] = event;
ec156764
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253
254 return event;
255}
256
39aeb52f 257static struct sched_atom *last_event(struct task_desc *task)
ec156764
IM
258{
259 if (!task->nr_events)
260 return NULL;
261
39aeb52f 262 return task->atoms[task->nr_events - 1];
ec156764
IM
263}
264
0e9b07e5
ACM
265static void add_sched_event_run(struct perf_sched *sched, struct task_desc *task,
266 u64 timestamp, u64 duration)
ec156764 267{
39aeb52f 268 struct sched_atom *event, *curr_event = last_event(task);
ec156764
IM
269
270 /*
fbf94829
IM
271 * optimize an existing RUN event by merging this one
272 * to it:
273 */
ec156764 274 if (curr_event && curr_event->type == SCHED_EVENT_RUN) {
0e9b07e5 275 sched->nr_run_events_optimized++;
ec156764
IM
276 curr_event->duration += duration;
277 return;
278 }
279
280 event = get_new_event(task, timestamp);
281
282 event->type = SCHED_EVENT_RUN;
283 event->duration = duration;
284
0e9b07e5 285 sched->nr_run_events++;
ec156764
IM
286}
287
0e9b07e5
ACM
288static void add_sched_event_wakeup(struct perf_sched *sched, struct task_desc *task,
289 u64 timestamp, struct task_desc *wakee)
ec156764 290{
39aeb52f 291 struct sched_atom *event, *wakee_event;
ec156764
IM
292
293 event = get_new_event(task, timestamp);
294 event->type = SCHED_EVENT_WAKEUP;
295 event->wakee = wakee;
296
297 wakee_event = last_event(wakee);
298 if (!wakee_event || wakee_event->type != SCHED_EVENT_SLEEP) {
0e9b07e5 299 sched->targetless_wakeups++;
ec156764
IM
300 return;
301 }
302 if (wakee_event->wait_sem) {
0e9b07e5 303 sched->multitarget_wakeups++;
ec156764
IM
304 return;
305 }
306
36479484 307 wakee_event->wait_sem = zalloc(sizeof(*wakee_event->wait_sem));
ec156764
IM
308 sem_init(wakee_event->wait_sem, 0, 0);
309 wakee_event->specific_wait = 1;
310 event->wait_sem = wakee_event->wait_sem;
311
0e9b07e5 312 sched->nr_wakeup_events++;
ec156764
IM
313}
314
0e9b07e5
ACM
315static void add_sched_event_sleep(struct perf_sched *sched, struct task_desc *task,
316 u64 timestamp, u64 task_state __maybe_unused)
ec156764 317{
39aeb52f 318 struct sched_atom *event = get_new_event(task, timestamp);
ec156764
IM
319
320 event->type = SCHED_EVENT_SLEEP;
321
0e9b07e5 322 sched->nr_sleep_events++;
ec156764
IM
323}
324
0e9b07e5
ACM
325static struct task_desc *register_pid(struct perf_sched *sched,
326 unsigned long pid, const char *comm)
ec156764
IM
327{
328 struct task_desc *task;
329
330 BUG_ON(pid >= MAX_PID);
331
0e9b07e5 332 task = sched->pid_to_task[pid];
ec156764
IM
333
334 if (task)
335 return task;
336
36479484 337 task = zalloc(sizeof(*task));
ec156764 338 task->pid = pid;
0e9b07e5 339 task->nr = sched->nr_tasks;
ec156764
IM
340 strcpy(task->comm, comm);
341 /*
342 * every task starts in sleeping state - this gets ignored
343 * if there's no wakeup pointing to this sleep state:
344 */
0e9b07e5 345 add_sched_event_sleep(sched, task, 0, 0);
ec156764 346
0e9b07e5
ACM
347 sched->pid_to_task[pid] = task;
348 sched->nr_tasks++;
349 sched->tasks = realloc(sched->tasks, sched->nr_tasks * sizeof(struct task_task *));
350 BUG_ON(!sched->tasks);
351 sched->tasks[task->nr] = task;
ec156764 352
ad236fd2 353 if (verbose)
0e9b07e5 354 printf("registered task #%ld, PID %ld (%s)\n", sched->nr_tasks, pid, comm);
ec156764
IM
355
356 return task;
357}
358
359
0e9b07e5 360static void print_task_traces(struct perf_sched *sched)
ec156764
IM
361{
362 struct task_desc *task;
363 unsigned long i;
364
0e9b07e5
ACM
365 for (i = 0; i < sched->nr_tasks; i++) {
366 task = sched->tasks[i];
ad236fd2 367 printf("task %6ld (%20s:%10ld), nr_events: %ld\n",
ec156764
IM
368 task->nr, task->comm, task->pid, task->nr_events);
369 }
370}
371
0e9b07e5 372static void add_cross_task_wakeups(struct perf_sched *sched)
ec156764
IM
373{
374 struct task_desc *task1, *task2;
375 unsigned long i, j;
376
0e9b07e5
ACM
377 for (i = 0; i < sched->nr_tasks; i++) {
378 task1 = sched->tasks[i];
ec156764 379 j = i + 1;
0e9b07e5 380 if (j == sched->nr_tasks)
ec156764 381 j = 0;
0e9b07e5
ACM
382 task2 = sched->tasks[j];
383 add_sched_event_wakeup(sched, task1, 0, task2);
ec156764
IM
384 }
385}
386
0e9b07e5
ACM
387static void perf_sched__process_event(struct perf_sched *sched,
388 struct sched_atom *atom)
ec156764
IM
389{
390 int ret = 0;
ec156764 391
39aeb52f 392 switch (atom->type) {
ec156764 393 case SCHED_EVENT_RUN:
0e9b07e5 394 burn_nsecs(sched, atom->duration);
ec156764
IM
395 break;
396 case SCHED_EVENT_SLEEP:
39aeb52f 397 if (atom->wait_sem)
398 ret = sem_wait(atom->wait_sem);
ec156764
IM
399 BUG_ON(ret);
400 break;
401 case SCHED_EVENT_WAKEUP:
39aeb52f 402 if (atom->wait_sem)
403 ret = sem_post(atom->wait_sem);
ec156764
IM
404 BUG_ON(ret);
405 break;
55ffb7a6
MG
406 case SCHED_EVENT_MIGRATION:
407 break;
ec156764
IM
408 default:
409 BUG_ON(1);
410 }
411}
412
b1ffe8f3 413static u64 get_cpu_usage_nsec_parent(void)
ec156764
IM
414{
415 struct rusage ru;
b1ffe8f3 416 u64 sum;
ec156764
IM
417 int err;
418
419 err = getrusage(RUSAGE_SELF, &ru);
420 BUG_ON(err);
421
422 sum = ru.ru_utime.tv_sec*1e9 + ru.ru_utime.tv_usec*1e3;
423 sum += ru.ru_stime.tv_sec*1e9 + ru.ru_stime.tv_usec*1e3;
424
425 return sum;
426}
427
c0c9e721 428static int self_open_counters(void)
ec156764 429{
c0c9e721
XG
430 struct perf_event_attr attr;
431 int fd;
ec156764 432
c0c9e721 433 memset(&attr, 0, sizeof(attr));
ec156764 434
c0c9e721
XG
435 attr.type = PERF_TYPE_SOFTWARE;
436 attr.config = PERF_COUNT_SW_TASK_CLOCK;
ec156764 437
c0c9e721
XG
438 fd = sys_perf_event_open(&attr, 0, -1, -1, 0);
439
440 if (fd < 0)
60b7d14a
NK
441 pr_err("Error: sys_perf_event_open() syscall returned "
442 "with %d (%s)\n", fd, strerror(errno));
c0c9e721
XG
443 return fd;
444}
445
446static u64 get_cpu_usage_nsec_self(int fd)
447{
448 u64 runtime;
449 int ret;
450
451 ret = read(fd, &runtime, sizeof(runtime));
452 BUG_ON(ret != sizeof(runtime));
453
454 return runtime;
ec156764
IM
455}
456
0e9b07e5
ACM
457struct sched_thread_parms {
458 struct task_desc *task;
459 struct perf_sched *sched;
460};
461
ec156764
IM
462static void *thread_func(void *ctx)
463{
0e9b07e5
ACM
464 struct sched_thread_parms *parms = ctx;
465 struct task_desc *this_task = parms->task;
466 struct perf_sched *sched = parms->sched;
b1ffe8f3 467 u64 cpu_usage_0, cpu_usage_1;
ec156764
IM
468 unsigned long i, ret;
469 char comm2[22];
c0c9e721 470 int fd;
ec156764 471
0e9b07e5
ACM
472 free(parms);
473
ec156764
IM
474 sprintf(comm2, ":%s", this_task->comm);
475 prctl(PR_SET_NAME, comm2);
c0c9e721 476 fd = self_open_counters();
a116e05d
ACM
477 if (fd < 0)
478 return NULL;
ec156764
IM
479again:
480 ret = sem_post(&this_task->ready_for_work);
481 BUG_ON(ret);
0e9b07e5 482 ret = pthread_mutex_lock(&sched->start_work_mutex);
ec156764 483 BUG_ON(ret);
0e9b07e5 484 ret = pthread_mutex_unlock(&sched->start_work_mutex);
ec156764 485 BUG_ON(ret);
ec156764 486
c0c9e721 487 cpu_usage_0 = get_cpu_usage_nsec_self(fd);
ec156764
IM
488
489 for (i = 0; i < this_task->nr_events; i++) {
490 this_task->curr_event = i;
0e9b07e5 491 perf_sched__process_event(sched, this_task->atoms[i]);
ec156764
IM
492 }
493
c0c9e721 494 cpu_usage_1 = get_cpu_usage_nsec_self(fd);
ec156764 495 this_task->cpu_usage = cpu_usage_1 - cpu_usage_0;
ec156764
IM
496 ret = sem_post(&this_task->work_done_sem);
497 BUG_ON(ret);
ec156764 498
0e9b07e5 499 ret = pthread_mutex_lock(&sched->work_done_wait_mutex);
ec156764 500 BUG_ON(ret);
0e9b07e5 501 ret = pthread_mutex_unlock(&sched->work_done_wait_mutex);
ec156764 502 BUG_ON(ret);
ec156764
IM
503
504 goto again;
505}
506
0e9b07e5 507static void create_tasks(struct perf_sched *sched)
ec156764
IM
508{
509 struct task_desc *task;
510 pthread_attr_t attr;
511 unsigned long i;
512 int err;
513
514 err = pthread_attr_init(&attr);
515 BUG_ON(err);
12f7e036
JP
516 err = pthread_attr_setstacksize(&attr,
517 (size_t) max(16 * 1024, PTHREAD_STACK_MIN));
ec156764 518 BUG_ON(err);
0e9b07e5 519 err = pthread_mutex_lock(&sched->start_work_mutex);
ec156764 520 BUG_ON(err);
0e9b07e5 521 err = pthread_mutex_lock(&sched->work_done_wait_mutex);
ec156764 522 BUG_ON(err);
0e9b07e5
ACM
523 for (i = 0; i < sched->nr_tasks; i++) {
524 struct sched_thread_parms *parms = malloc(sizeof(*parms));
525 BUG_ON(parms == NULL);
526 parms->task = task = sched->tasks[i];
527 parms->sched = sched;
ec156764
IM
528 sem_init(&task->sleep_sem, 0, 0);
529 sem_init(&task->ready_for_work, 0, 0);
530 sem_init(&task->work_done_sem, 0, 0);
531 task->curr_event = 0;
0e9b07e5 532 err = pthread_create(&task->thread, &attr, thread_func, parms);
ec156764
IM
533 BUG_ON(err);
534 }
535}
536
0e9b07e5 537static void wait_for_tasks(struct perf_sched *sched)
ec156764 538{
b1ffe8f3 539 u64 cpu_usage_0, cpu_usage_1;
ec156764
IM
540 struct task_desc *task;
541 unsigned long i, ret;
542
0e9b07e5
ACM
543 sched->start_time = get_nsecs();
544 sched->cpu_usage = 0;
545 pthread_mutex_unlock(&sched->work_done_wait_mutex);
ec156764 546
0e9b07e5
ACM
547 for (i = 0; i < sched->nr_tasks; i++) {
548 task = sched->tasks[i];
ec156764
IM
549 ret = sem_wait(&task->ready_for_work);
550 BUG_ON(ret);
551 sem_init(&task->ready_for_work, 0, 0);
552 }
0e9b07e5 553 ret = pthread_mutex_lock(&sched->work_done_wait_mutex);
ec156764
IM
554 BUG_ON(ret);
555
556 cpu_usage_0 = get_cpu_usage_nsec_parent();
557
0e9b07e5 558 pthread_mutex_unlock(&sched->start_work_mutex);
ec156764 559
0e9b07e5
ACM
560 for (i = 0; i < sched->nr_tasks; i++) {
561 task = sched->tasks[i];
ec156764
IM
562 ret = sem_wait(&task->work_done_sem);
563 BUG_ON(ret);
564 sem_init(&task->work_done_sem, 0, 0);
0e9b07e5 565 sched->cpu_usage += task->cpu_usage;
ec156764
IM
566 task->cpu_usage = 0;
567 }
568
569 cpu_usage_1 = get_cpu_usage_nsec_parent();
0e9b07e5
ACM
570 if (!sched->runavg_cpu_usage)
571 sched->runavg_cpu_usage = sched->cpu_usage;
572 sched->runavg_cpu_usage = (sched->runavg_cpu_usage * 9 + sched->cpu_usage) / 10;
ec156764 573
0e9b07e5
ACM
574 sched->parent_cpu_usage = cpu_usage_1 - cpu_usage_0;
575 if (!sched->runavg_parent_cpu_usage)
576 sched->runavg_parent_cpu_usage = sched->parent_cpu_usage;
577 sched->runavg_parent_cpu_usage = (sched->runavg_parent_cpu_usage * 9 +
578 sched->parent_cpu_usage)/10;
ec156764 579
0e9b07e5 580 ret = pthread_mutex_lock(&sched->start_work_mutex);
ec156764
IM
581 BUG_ON(ret);
582
0e9b07e5
ACM
583 for (i = 0; i < sched->nr_tasks; i++) {
584 task = sched->tasks[i];
ec156764
IM
585 sem_init(&task->sleep_sem, 0, 0);
586 task->curr_event = 0;
587 }
588}
589
0e9b07e5 590static void run_one_test(struct perf_sched *sched)
ec156764 591{
fb7d0b3c 592 u64 T0, T1, delta, avg_delta, fluct;
ec156764
IM
593
594 T0 = get_nsecs();
0e9b07e5 595 wait_for_tasks(sched);
ec156764
IM
596 T1 = get_nsecs();
597
598 delta = T1 - T0;
0e9b07e5
ACM
599 sched->sum_runtime += delta;
600 sched->nr_runs++;
ec156764 601
0e9b07e5 602 avg_delta = sched->sum_runtime / sched->nr_runs;
ec156764
IM
603 if (delta < avg_delta)
604 fluct = avg_delta - delta;
605 else
606 fluct = delta - avg_delta;
0e9b07e5
ACM
607 sched->sum_fluct += fluct;
608 if (!sched->run_avg)
609 sched->run_avg = delta;
610 sched->run_avg = (sched->run_avg * 9 + delta) / 10;
ec156764 611
0e9b07e5 612 printf("#%-3ld: %0.3f, ", sched->nr_runs, (double)delta / 1000000.0);
ec156764 613
0e9b07e5 614 printf("ravg: %0.2f, ", (double)sched->run_avg / 1e6);
ec156764 615
ad236fd2 616 printf("cpu: %0.2f / %0.2f",
0e9b07e5 617 (double)sched->cpu_usage / 1e6, (double)sched->runavg_cpu_usage / 1e6);
ec156764
IM
618
619#if 0
620 /*
fbf94829 621 * rusage statistics done by the parent, these are less
0e9b07e5 622 * accurate than the sched->sum_exec_runtime based statistics:
fbf94829 623 */
ad236fd2 624 printf(" [%0.2f / %0.2f]",
0e9b07e5
ACM
625 (double)sched->parent_cpu_usage/1e6,
626 (double)sched->runavg_parent_cpu_usage/1e6);
ec156764
IM
627#endif
628
ad236fd2 629 printf("\n");
ec156764 630
0e9b07e5
ACM
631 if (sched->nr_sleep_corrections)
632 printf(" (%ld sleep corrections)\n", sched->nr_sleep_corrections);
633 sched->nr_sleep_corrections = 0;
ec156764
IM
634}
635
0e9b07e5 636static void test_calibrations(struct perf_sched *sched)
ec156764 637{
b1ffe8f3 638 u64 T0, T1;
ec156764
IM
639
640 T0 = get_nsecs();
0e9b07e5 641 burn_nsecs(sched, 1e6);
ec156764
IM
642 T1 = get_nsecs();
643
9486aa38 644 printf("the run test took %" PRIu64 " nsecs\n", T1 - T0);
ec156764
IM
645
646 T0 = get_nsecs();
647 sleep_nsecs(1e6);
648 T1 = get_nsecs();
649
9486aa38 650 printf("the sleep test took %" PRIu64 " nsecs\n", T1 - T0);
ec156764
IM
651}
652
a116e05d 653static int
0e9b07e5 654replay_wakeup_event(struct perf_sched *sched,
9ec3f4e4
ACM
655 struct perf_evsel *evsel, struct perf_sample *sample,
656 struct machine *machine __maybe_unused)
419ab0d6 657{
9ec3f4e4
ACM
658 const char *comm = perf_evsel__strval(evsel, sample, "comm");
659 const u32 pid = perf_evsel__intval(evsel, sample, "pid");
419ab0d6 660 struct task_desc *waker, *wakee;
fbf94829 661
ad236fd2 662 if (verbose) {
2b7fcbc5 663 printf("sched_wakeup event %p\n", evsel);
fbf94829 664
9ec3f4e4 665 printf(" ... pid %d woke up %s/%d\n", sample->tid, comm, pid);
ad236fd2 666 }
fbf94829 667
2b7fcbc5 668 waker = register_pid(sched, sample->tid, "<unknown>");
9ec3f4e4 669 wakee = register_pid(sched, pid, comm);
fbf94829 670
0e9b07e5 671 add_sched_event_wakeup(sched, waker, sample->time, wakee);
a116e05d 672 return 0;
ec156764
IM
673}
674
9ec3f4e4
ACM
675static int replay_switch_event(struct perf_sched *sched,
676 struct perf_evsel *evsel,
677 struct perf_sample *sample,
678 struct machine *machine __maybe_unused)
ec156764 679{
9ec3f4e4
ACM
680 const char *prev_comm = perf_evsel__strval(evsel, sample, "prev_comm"),
681 *next_comm = perf_evsel__strval(evsel, sample, "next_comm");
682 const u32 prev_pid = perf_evsel__intval(evsel, sample, "prev_pid"),
683 next_pid = perf_evsel__intval(evsel, sample, "next_pid");
684 const u64 prev_state = perf_evsel__intval(evsel, sample, "prev_state");
1d037ca1 685 struct task_desc *prev, __maybe_unused *next;
7f7f8d0b
ACM
686 u64 timestamp0, timestamp = sample->time;
687 int cpu = sample->cpu;
fbf94829
IM
688 s64 delta;
689
ad236fd2 690 if (verbose)
2b7fcbc5 691 printf("sched_switch event %p\n", evsel);
ad236fd2 692
fbf94829 693 if (cpu >= MAX_CPUS || cpu < 0)
a116e05d 694 return 0;
fbf94829 695
0e9b07e5 696 timestamp0 = sched->cpu_last_switched[cpu];
fbf94829
IM
697 if (timestamp0)
698 delta = timestamp - timestamp0;
699 else
700 delta = 0;
701
a116e05d 702 if (delta < 0) {
60b7d14a 703 pr_err("hm, delta: %" PRIu64 " < 0 ?\n", delta);
a116e05d
ACM
704 return -1;
705 }
fbf94829 706
9ec3f4e4
ACM
707 pr_debug(" ... switch from %s/%d to %s/%d [ran %" PRIu64 " nsecs]\n",
708 prev_comm, prev_pid, next_comm, next_pid, delta);
fbf94829 709
9ec3f4e4
ACM
710 prev = register_pid(sched, prev_pid, prev_comm);
711 next = register_pid(sched, next_pid, next_comm);
fbf94829 712
0e9b07e5 713 sched->cpu_last_switched[cpu] = timestamp;
fbf94829 714
0e9b07e5 715 add_sched_event_run(sched, prev, timestamp, delta);
9ec3f4e4 716 add_sched_event_sleep(sched, prev, timestamp, prev_state);
a116e05d
ACM
717
718 return 0;
fbf94829
IM
719}
720
cb627505
DA
721static int replay_fork_event(struct perf_sched *sched,
722 union perf_event *event,
723 struct machine *machine)
419ab0d6 724{
cb627505
DA
725 struct thread *child, *parent;
726
314add6b
AH
727 child = machine__findnew_thread(machine, event->fork.pid,
728 event->fork.tid);
729 parent = machine__findnew_thread(machine, event->fork.ppid,
730 event->fork.ptid);
cb627505
DA
731
732 if (child == NULL || parent == NULL) {
733 pr_debug("thread does not exist on fork event: child %p, parent %p\n",
734 child, parent);
735 return 0;
736 }
9ec3f4e4 737
419ab0d6 738 if (verbose) {
cb627505
DA
739 printf("fork event\n");
740 printf("... parent: %s/%d\n", parent->comm, parent->tid);
741 printf("... child: %s/%d\n", child->comm, child->tid);
419ab0d6 742 }
9ec3f4e4 743
cb627505
DA
744 register_pid(sched, parent->tid, parent->comm);
745 register_pid(sched, child->tid, child->comm);
a116e05d 746 return 0;
419ab0d6 747}
fbf94829 748
b1ffe8f3
IM
749struct sort_dimension {
750 const char *name;
b5fae128 751 sort_fn_t cmp;
b1ffe8f3
IM
752 struct list_head list;
753};
754
daa1d7a5 755static int
39aeb52f 756thread_lat_cmp(struct list_head *list, struct work_atoms *l, struct work_atoms *r)
daa1d7a5
FW
757{
758 struct sort_dimension *sort;
759 int ret = 0;
760
b5fae128
IM
761 BUG_ON(list_empty(list));
762
daa1d7a5
FW
763 list_for_each_entry(sort, list, list) {
764 ret = sort->cmp(l, r);
765 if (ret)
766 return ret;
767 }
768
769 return ret;
770}
771
39aeb52f 772static struct work_atoms *
b5fae128
IM
773thread_atoms_search(struct rb_root *root, struct thread *thread,
774 struct list_head *sort_list)
775{
776 struct rb_node *node = root->rb_node;
39aeb52f 777 struct work_atoms key = { .thread = thread };
b5fae128
IM
778
779 while (node) {
39aeb52f 780 struct work_atoms *atoms;
b5fae128
IM
781 int cmp;
782
39aeb52f 783 atoms = container_of(node, struct work_atoms, node);
b5fae128
IM
784
785 cmp = thread_lat_cmp(sort_list, &key, atoms);
786 if (cmp > 0)
787 node = node->rb_left;
788 else if (cmp < 0)
789 node = node->rb_right;
790 else {
791 BUG_ON(thread != atoms->thread);
792 return atoms;
793 }
794 }
795 return NULL;
796}
797
cdce9d73 798static void
39aeb52f 799__thread_latency_insert(struct rb_root *root, struct work_atoms *data,
daa1d7a5 800 struct list_head *sort_list)
cdce9d73
FW
801{
802 struct rb_node **new = &(root->rb_node), *parent = NULL;
803
804 while (*new) {
39aeb52f 805 struct work_atoms *this;
daa1d7a5 806 int cmp;
cdce9d73 807
39aeb52f 808 this = container_of(*new, struct work_atoms, node);
cdce9d73 809 parent = *new;
daa1d7a5
FW
810
811 cmp = thread_lat_cmp(sort_list, data, this);
812
813 if (cmp > 0)
cdce9d73 814 new = &((*new)->rb_left);
cdce9d73 815 else
daa1d7a5 816 new = &((*new)->rb_right);
cdce9d73
FW
817 }
818
819 rb_link_node(&data->node, parent, new);
820 rb_insert_color(&data->node, root);
821}
822
0e9b07e5 823static int thread_atoms_insert(struct perf_sched *sched, struct thread *thread)
cdce9d73 824{
36479484 825 struct work_atoms *atoms = zalloc(sizeof(*atoms));
a116e05d
ACM
826 if (!atoms) {
827 pr_err("No memory at %s\n", __func__);
828 return -1;
829 }
cdce9d73 830
17562205 831 atoms->thread = thread;
39aeb52f 832 INIT_LIST_HEAD(&atoms->work_list);
0e9b07e5 833 __thread_latency_insert(&sched->atom_root, atoms, &sched->cmp_pid);
a116e05d 834 return 0;
cdce9d73
FW
835}
836
9ec3f4e4 837static char sched_out_state(u64 prev_state)
cdce9d73
FW
838{
839 const char *str = TASK_STATE_TO_CHAR_STR;
840
9ec3f4e4 841 return str[prev_state];
cdce9d73
FW
842}
843
a116e05d 844static int
39aeb52f 845add_sched_out_event(struct work_atoms *atoms,
846 char run_state,
847 u64 timestamp)
cdce9d73 848{
36479484 849 struct work_atom *atom = zalloc(sizeof(*atom));
a116e05d
ACM
850 if (!atom) {
851 pr_err("Non memory at %s", __func__);
852 return -1;
853 }
cdce9d73 854
aa1ab9d2
FW
855 atom->sched_out_time = timestamp;
856
39aeb52f 857 if (run_state == 'R') {
b1ffe8f3 858 atom->state = THREAD_WAIT_CPU;
aa1ab9d2 859 atom->wake_up_time = atom->sched_out_time;
c6ced611
FW
860 }
861
39aeb52f 862 list_add_tail(&atom->list, &atoms->work_list);
a116e05d 863 return 0;
cdce9d73
FW
864}
865
866static void
1d037ca1
IT
867add_runtime_event(struct work_atoms *atoms, u64 delta,
868 u64 timestamp __maybe_unused)
39aeb52f 869{
870 struct work_atom *atom;
871
872 BUG_ON(list_empty(&atoms->work_list));
873
874 atom = list_entry(atoms->work_list.prev, struct work_atom, list);
875
876 atom->runtime += delta;
877 atoms->total_runtime += delta;
878}
879
880static void
881add_sched_in_event(struct work_atoms *atoms, u64 timestamp)
cdce9d73 882{
b1ffe8f3 883 struct work_atom *atom;
66685678 884 u64 delta;
cdce9d73 885
39aeb52f 886 if (list_empty(&atoms->work_list))
cdce9d73
FW
887 return;
888
39aeb52f 889 atom = list_entry(atoms->work_list.prev, struct work_atom, list);
cdce9d73 890
b1ffe8f3 891 if (atom->state != THREAD_WAIT_CPU)
cdce9d73
FW
892 return;
893
b1ffe8f3
IM
894 if (timestamp < atom->wake_up_time) {
895 atom->state = THREAD_IGNORE;
cdce9d73
FW
896 return;
897 }
898
b1ffe8f3
IM
899 atom->state = THREAD_SCHED_IN;
900 atom->sched_in_time = timestamp;
66685678 901
b1ffe8f3 902 delta = atom->sched_in_time - atom->wake_up_time;
66685678 903 atoms->total_lat += delta;
3786310a 904 if (delta > atoms->max_lat) {
66685678 905 atoms->max_lat = delta;
3786310a
FW
906 atoms->max_lat_at = timestamp;
907 }
66685678 908 atoms->nb_atoms++;
cdce9d73
FW
909}
910
9ec3f4e4
ACM
911static int latency_switch_event(struct perf_sched *sched,
912 struct perf_evsel *evsel,
913 struct perf_sample *sample,
914 struct machine *machine)
cdce9d73 915{
9ec3f4e4
ACM
916 const u32 prev_pid = perf_evsel__intval(evsel, sample, "prev_pid"),
917 next_pid = perf_evsel__intval(evsel, sample, "next_pid");
918 const u64 prev_state = perf_evsel__intval(evsel, sample, "prev_state");
39aeb52f 919 struct work_atoms *out_events, *in_events;
cdce9d73 920 struct thread *sched_out, *sched_in;
7f7f8d0b
ACM
921 u64 timestamp0, timestamp = sample->time;
922 int cpu = sample->cpu;
ea92ed5a
IM
923 s64 delta;
924
39aeb52f 925 BUG_ON(cpu >= MAX_CPUS || cpu < 0);
ea92ed5a 926
0e9b07e5
ACM
927 timestamp0 = sched->cpu_last_switched[cpu];
928 sched->cpu_last_switched[cpu] = timestamp;
ea92ed5a
IM
929 if (timestamp0)
930 delta = timestamp - timestamp0;
931 else
932 delta = 0;
933
a116e05d
ACM
934 if (delta < 0) {
935 pr_err("hm, delta: %" PRIu64 " < 0 ?\n", delta);
936 return -1;
937 }
cdce9d73 938
314add6b
AH
939 sched_out = machine__findnew_thread(machine, 0, prev_pid);
940 sched_in = machine__findnew_thread(machine, 0, next_pid);
cdce9d73 941
0e9b07e5 942 out_events = thread_atoms_search(&sched->atom_root, sched_out, &sched->cmp_pid);
39aeb52f 943 if (!out_events) {
0e9b07e5 944 if (thread_atoms_insert(sched, sched_out))
a116e05d 945 return -1;
0e9b07e5 946 out_events = thread_atoms_search(&sched->atom_root, sched_out, &sched->cmp_pid);
a116e05d
ACM
947 if (!out_events) {
948 pr_err("out-event: Internal tree error");
949 return -1;
950 }
39aeb52f 951 }
9ec3f4e4 952 if (add_sched_out_event(out_events, sched_out_state(prev_state), timestamp))
a116e05d 953 return -1;
39aeb52f 954
0e9b07e5 955 in_events = thread_atoms_search(&sched->atom_root, sched_in, &sched->cmp_pid);
39aeb52f 956 if (!in_events) {
0e9b07e5 957 if (thread_atoms_insert(sched, sched_in))
a116e05d 958 return -1;
0e9b07e5 959 in_events = thread_atoms_search(&sched->atom_root, sched_in, &sched->cmp_pid);
a116e05d
ACM
960 if (!in_events) {
961 pr_err("in-event: Internal tree error");
962 return -1;
963 }
39aeb52f 964 /*
965 * Take came in we have not heard about yet,
966 * add in an initial atom in runnable state:
967 */
a116e05d
ACM
968 if (add_sched_out_event(in_events, 'R', timestamp))
969 return -1;
cdce9d73 970 }
39aeb52f 971 add_sched_in_event(in_events, timestamp);
a116e05d
ACM
972
973 return 0;
39aeb52f 974}
cdce9d73 975
9ec3f4e4
ACM
976static int latency_runtime_event(struct perf_sched *sched,
977 struct perf_evsel *evsel,
978 struct perf_sample *sample,
979 struct machine *machine)
39aeb52f 980{
9ec3f4e4
ACM
981 const u32 pid = perf_evsel__intval(evsel, sample, "pid");
982 const u64 runtime = perf_evsel__intval(evsel, sample, "runtime");
314add6b 983 struct thread *thread = machine__findnew_thread(machine, 0, pid);
0e9b07e5 984 struct work_atoms *atoms = thread_atoms_search(&sched->atom_root, thread, &sched->cmp_pid);
7f7f8d0b
ACM
985 u64 timestamp = sample->time;
986 int cpu = sample->cpu;
39aeb52f 987
988 BUG_ON(cpu >= MAX_CPUS || cpu < 0);
39aeb52f 989 if (!atoms) {
0e9b07e5 990 if (thread_atoms_insert(sched, thread))
a116e05d 991 return -1;
0e9b07e5 992 atoms = thread_atoms_search(&sched->atom_root, thread, &sched->cmp_pid);
a116e05d 993 if (!atoms) {
60b7d14a 994 pr_err("in-event: Internal tree error");
a116e05d
ACM
995 return -1;
996 }
997 if (add_sched_out_event(atoms, 'R', timestamp))
998 return -1;
cdce9d73
FW
999 }
1000
9ec3f4e4 1001 add_runtime_event(atoms, runtime, timestamp);
a116e05d 1002 return 0;
cdce9d73
FW
1003}
1004
9ec3f4e4
ACM
1005static int latency_wakeup_event(struct perf_sched *sched,
1006 struct perf_evsel *evsel,
1007 struct perf_sample *sample,
1008 struct machine *machine)
cdce9d73 1009{
9ec3f4e4
ACM
1010 const u32 pid = perf_evsel__intval(evsel, sample, "pid"),
1011 success = perf_evsel__intval(evsel, sample, "success");
39aeb52f 1012 struct work_atoms *atoms;
b1ffe8f3 1013 struct work_atom *atom;
cdce9d73 1014 struct thread *wakee;
7f7f8d0b 1015 u64 timestamp = sample->time;
cdce9d73
FW
1016
1017 /* Note for later, it may be interesting to observe the failing cases */
9ec3f4e4 1018 if (!success)
a116e05d 1019 return 0;
cdce9d73 1020
314add6b 1021 wakee = machine__findnew_thread(machine, 0, pid);
0e9b07e5 1022 atoms = thread_atoms_search(&sched->atom_root, wakee, &sched->cmp_pid);
17562205 1023 if (!atoms) {
0e9b07e5 1024 if (thread_atoms_insert(sched, wakee))
a116e05d 1025 return -1;
0e9b07e5 1026 atoms = thread_atoms_search(&sched->atom_root, wakee, &sched->cmp_pid);
a116e05d 1027 if (!atoms) {
60b7d14a 1028 pr_err("wakeup-event: Internal tree error");
a116e05d
ACM
1029 return -1;
1030 }
1031 if (add_sched_out_event(atoms, 'S', timestamp))
1032 return -1;
cdce9d73
FW
1033 }
1034
39aeb52f 1035 BUG_ON(list_empty(&atoms->work_list));
cdce9d73 1036
39aeb52f 1037 atom = list_entry(atoms->work_list.prev, struct work_atom, list);
cdce9d73 1038
55ffb7a6
MG
1039 /*
1040 * You WILL be missing events if you've recorded only
1041 * one CPU, or are only looking at only one, so don't
1042 * make useless noise.
1043 */
0e9b07e5
ACM
1044 if (sched->profile_cpu == -1 && atom->state != THREAD_SLEEPING)
1045 sched->nr_state_machine_bugs++;
cdce9d73 1046
0e9b07e5 1047 sched->nr_timestamps++;
ea57c4f5 1048 if (atom->sched_out_time > timestamp) {
0e9b07e5 1049 sched->nr_unordered_timestamps++;
a116e05d 1050 return 0;
ea57c4f5 1051 }
aa1ab9d2 1052
b1ffe8f3
IM
1053 atom->state = THREAD_WAIT_CPU;
1054 atom->wake_up_time = timestamp;
a116e05d 1055 return 0;
cdce9d73
FW
1056}
1057
9ec3f4e4
ACM
1058static int latency_migrate_task_event(struct perf_sched *sched,
1059 struct perf_evsel *evsel,
1060 struct perf_sample *sample,
1061 struct machine *machine)
55ffb7a6 1062{
9ec3f4e4 1063 const u32 pid = perf_evsel__intval(evsel, sample, "pid");
7f7f8d0b 1064 u64 timestamp = sample->time;
55ffb7a6
MG
1065 struct work_atoms *atoms;
1066 struct work_atom *atom;
1067 struct thread *migrant;
1068
1069 /*
1070 * Only need to worry about migration when profiling one CPU.
1071 */
0e9b07e5 1072 if (sched->profile_cpu == -1)
a116e05d 1073 return 0;
55ffb7a6 1074
314add6b 1075 migrant = machine__findnew_thread(machine, 0, pid);
0e9b07e5 1076 atoms = thread_atoms_search(&sched->atom_root, migrant, &sched->cmp_pid);
55ffb7a6 1077 if (!atoms) {
0e9b07e5 1078 if (thread_atoms_insert(sched, migrant))
a116e05d 1079 return -1;
38051234 1080 register_pid(sched, migrant->tid, migrant->comm);
0e9b07e5 1081 atoms = thread_atoms_search(&sched->atom_root, migrant, &sched->cmp_pid);
a116e05d 1082 if (!atoms) {
60b7d14a 1083 pr_err("migration-event: Internal tree error");
a116e05d
ACM
1084 return -1;
1085 }
1086 if (add_sched_out_event(atoms, 'R', timestamp))
1087 return -1;
55ffb7a6
MG
1088 }
1089
1090 BUG_ON(list_empty(&atoms->work_list));
1091
1092 atom = list_entry(atoms->work_list.prev, struct work_atom, list);
1093 atom->sched_in_time = atom->sched_out_time = atom->wake_up_time = timestamp;
1094
0e9b07e5 1095 sched->nr_timestamps++;
55ffb7a6
MG
1096
1097 if (atom->sched_out_time > timestamp)
0e9b07e5 1098 sched->nr_unordered_timestamps++;
a116e05d
ACM
1099
1100 return 0;
55ffb7a6
MG
1101}
1102
0e9b07e5 1103static void output_lat_thread(struct perf_sched *sched, struct work_atoms *work_list)
cdce9d73 1104{
cdce9d73
FW
1105 int i;
1106 int ret;
66685678 1107 u64 avg;
cdce9d73 1108
39aeb52f 1109 if (!work_list->nb_atoms)
cdce9d73 1110 return;
ea57c4f5
IM
1111 /*
1112 * Ignore idle threads:
1113 */
80ed0987 1114 if (!strcmp(work_list->thread->comm, "swapper"))
ea57c4f5 1115 return;
cdce9d73 1116
0e9b07e5
ACM
1117 sched->all_runtime += work_list->total_runtime;
1118 sched->all_count += work_list->nb_atoms;
66685678 1119
38051234 1120 ret = printf(" %s:%d ", work_list->thread->comm, work_list->thread->tid);
cdce9d73 1121
08f69e6c 1122 for (i = 0; i < 24 - ret; i++)
cdce9d73
FW
1123 printf(" ");
1124
39aeb52f 1125 avg = work_list->total_lat / work_list->nb_atoms;
cdce9d73 1126
9486aa38 1127 printf("|%11.3f ms |%9" PRIu64 " | avg:%9.3f ms | max:%9.3f ms | max at: %9.6f s\n",
39aeb52f 1128 (double)work_list->total_runtime / 1e6,
1129 work_list->nb_atoms, (double)avg / 1e6,
3786310a
FW
1130 (double)work_list->max_lat / 1e6,
1131 (double)work_list->max_lat_at / 1e9);
cdce9d73
FW
1132}
1133
39aeb52f 1134static int pid_cmp(struct work_atoms *l, struct work_atoms *r)
daa1d7a5 1135{
38051234 1136 if (l->thread->tid < r->thread->tid)
daa1d7a5 1137 return -1;
38051234 1138 if (l->thread->tid > r->thread->tid)
daa1d7a5
FW
1139 return 1;
1140
1141 return 0;
1142}
1143
39aeb52f 1144static int avg_cmp(struct work_atoms *l, struct work_atoms *r)
daa1d7a5
FW
1145{
1146 u64 avgl, avgr;
1147
1148 if (!l->nb_atoms)
1149 return -1;
1150
1151 if (!r->nb_atoms)
1152 return 1;
1153
1154 avgl = l->total_lat / l->nb_atoms;
1155 avgr = r->total_lat / r->nb_atoms;
1156
1157 if (avgl < avgr)
1158 return -1;
1159 if (avgl > avgr)
1160 return 1;
1161
1162 return 0;
1163}
1164
39aeb52f 1165static int max_cmp(struct work_atoms *l, struct work_atoms *r)
daa1d7a5
FW
1166{
1167 if (l->max_lat < r->max_lat)
1168 return -1;
1169 if (l->max_lat > r->max_lat)
1170 return 1;
1171
1172 return 0;
1173}
1174
39aeb52f 1175static int switch_cmp(struct work_atoms *l, struct work_atoms *r)
daa1d7a5
FW
1176{
1177 if (l->nb_atoms < r->nb_atoms)
1178 return -1;
1179 if (l->nb_atoms > r->nb_atoms)
1180 return 1;
1181
1182 return 0;
1183}
1184
39aeb52f 1185static int runtime_cmp(struct work_atoms *l, struct work_atoms *r)
daa1d7a5
FW
1186{
1187 if (l->total_runtime < r->total_runtime)
1188 return -1;
1189 if (l->total_runtime > r->total_runtime)
1190 return 1;
1191
1192 return 0;
1193}
1194
cbef79a8 1195static int sort_dimension__add(const char *tok, struct list_head *list)
daa1d7a5 1196{
0e9b07e5
ACM
1197 size_t i;
1198 static struct sort_dimension avg_sort_dimension = {
1199 .name = "avg",
1200 .cmp = avg_cmp,
1201 };
1202 static struct sort_dimension max_sort_dimension = {
1203 .name = "max",
1204 .cmp = max_cmp,
1205 };
1206 static struct sort_dimension pid_sort_dimension = {
1207 .name = "pid",
1208 .cmp = pid_cmp,
1209 };
1210 static struct sort_dimension runtime_sort_dimension = {
1211 .name = "runtime",
1212 .cmp = runtime_cmp,
1213 };
1214 static struct sort_dimension switch_sort_dimension = {
1215 .name = "switch",
1216 .cmp = switch_cmp,
1217 };
1218 struct sort_dimension *available_sorts[] = {
1219 &pid_sort_dimension,
1220 &avg_sort_dimension,
1221 &max_sort_dimension,
1222 &switch_sort_dimension,
1223 &runtime_sort_dimension,
1224 };
daa1d7a5 1225
0e9b07e5 1226 for (i = 0; i < ARRAY_SIZE(available_sorts); i++) {
daa1d7a5
FW
1227 if (!strcmp(available_sorts[i]->name, tok)) {
1228 list_add_tail(&available_sorts[i]->list, list);
1229
1230 return 0;
1231 }
1232 }
1233
1234 return -1;
1235}
1236
0e9b07e5 1237static void perf_sched__sort_lat(struct perf_sched *sched)
daa1d7a5
FW
1238{
1239 struct rb_node *node;
1240
1241 for (;;) {
39aeb52f 1242 struct work_atoms *data;
0e9b07e5 1243 node = rb_first(&sched->atom_root);
daa1d7a5
FW
1244 if (!node)
1245 break;
1246
0e9b07e5 1247 rb_erase(node, &sched->atom_root);
39aeb52f 1248 data = rb_entry(node, struct work_atoms, node);
0e9b07e5 1249 __thread_latency_insert(&sched->sorted_atom_root, data, &sched->sort_list);
daa1d7a5
FW
1250 }
1251}
1252
0e9b07e5 1253static int process_sched_wakeup_event(struct perf_tool *tool,
2b7fcbc5 1254 struct perf_evsel *evsel,
1d037ca1 1255 struct perf_sample *sample,
4218e673 1256 struct machine *machine)
419ab0d6 1257{
0e9b07e5 1258 struct perf_sched *sched = container_of(tool, struct perf_sched, tool);
419ab0d6 1259
9ec3f4e4
ACM
1260 if (sched->tp_handler->wakeup_event)
1261 return sched->tp_handler->wakeup_event(sched, evsel, sample, machine);
a116e05d 1262
2b7fcbc5 1263 return 0;
419ab0d6
FW
1264}
1265
9ec3f4e4
ACM
1266static int map_switch_event(struct perf_sched *sched, struct perf_evsel *evsel,
1267 struct perf_sample *sample, struct machine *machine)
0ec04e16 1268{
9ec3f4e4
ACM
1269 const u32 prev_pid = perf_evsel__intval(evsel, sample, "prev_pid"),
1270 next_pid = perf_evsel__intval(evsel, sample, "next_pid");
1d037ca1 1271 struct thread *sched_out __maybe_unused, *sched_in;
0ec04e16 1272 int new_shortname;
7f7f8d0b 1273 u64 timestamp0, timestamp = sample->time;
0ec04e16 1274 s64 delta;
7f7f8d0b 1275 int cpu, this_cpu = sample->cpu;
0ec04e16
IM
1276
1277 BUG_ON(this_cpu >= MAX_CPUS || this_cpu < 0);
1278
0e9b07e5
ACM
1279 if (this_cpu > sched->max_cpu)
1280 sched->max_cpu = this_cpu;
0ec04e16 1281
0e9b07e5
ACM
1282 timestamp0 = sched->cpu_last_switched[this_cpu];
1283 sched->cpu_last_switched[this_cpu] = timestamp;
0ec04e16
IM
1284 if (timestamp0)
1285 delta = timestamp - timestamp0;
1286 else
1287 delta = 0;
1288
a116e05d 1289 if (delta < 0) {
60b7d14a 1290 pr_err("hm, delta: %" PRIu64 " < 0 ?\n", delta);
a116e05d
ACM
1291 return -1;
1292 }
0ec04e16 1293
314add6b
AH
1294 sched_out = machine__findnew_thread(machine, 0, prev_pid);
1295 sched_in = machine__findnew_thread(machine, 0, next_pid);
0ec04e16 1296
0e9b07e5 1297 sched->curr_thread[this_cpu] = sched_in;
0ec04e16
IM
1298
1299 printf(" ");
1300
1301 new_shortname = 0;
1302 if (!sched_in->shortname[0]) {
0e9b07e5
ACM
1303 sched_in->shortname[0] = sched->next_shortname1;
1304 sched_in->shortname[1] = sched->next_shortname2;
0ec04e16 1305
0e9b07e5
ACM
1306 if (sched->next_shortname1 < 'Z') {
1307 sched->next_shortname1++;
0ec04e16 1308 } else {
0e9b07e5
ACM
1309 sched->next_shortname1='A';
1310 if (sched->next_shortname2 < '9') {
1311 sched->next_shortname2++;
0ec04e16 1312 } else {
0e9b07e5 1313 sched->next_shortname2='0';
0ec04e16
IM
1314 }
1315 }
1316 new_shortname = 1;
1317 }
1318
0e9b07e5 1319 for (cpu = 0; cpu <= sched->max_cpu; cpu++) {
0ec04e16
IM
1320 if (cpu != this_cpu)
1321 printf(" ");
1322 else
1323 printf("*");
1324
0e9b07e5 1325 if (sched->curr_thread[cpu]) {
38051234 1326 if (sched->curr_thread[cpu]->tid)
0e9b07e5 1327 printf("%2s ", sched->curr_thread[cpu]->shortname);
0ec04e16
IM
1328 else
1329 printf(". ");
1330 } else
1331 printf(" ");
1332 }
1333
1334 printf(" %12.6f secs ", (double)timestamp/1e9);
1335 if (new_shortname) {
1336 printf("%s => %s:%d\n",
38051234 1337 sched_in->shortname, sched_in->comm, sched_in->tid);
0ec04e16
IM
1338 } else {
1339 printf("\n");
1340 }
a116e05d
ACM
1341
1342 return 0;
0ec04e16
IM
1343}
1344
0e9b07e5 1345static int process_sched_switch_event(struct perf_tool *tool,
2b7fcbc5 1346 struct perf_evsel *evsel,
1d037ca1 1347 struct perf_sample *sample,
4218e673 1348 struct machine *machine)
419ab0d6 1349{
0e9b07e5 1350 struct perf_sched *sched = container_of(tool, struct perf_sched, tool);
a116e05d 1351 int this_cpu = sample->cpu, err = 0;
2b7fcbc5
ACM
1352 u32 prev_pid = perf_evsel__intval(evsel, sample, "prev_pid"),
1353 next_pid = perf_evsel__intval(evsel, sample, "next_pid");
419ab0d6 1354
0e9b07e5 1355 if (sched->curr_pid[this_cpu] != (u32)-1) {
c8a37751
IM
1356 /*
1357 * Are we trying to switch away a PID that is
1358 * not current?
1359 */
2b7fcbc5 1360 if (sched->curr_pid[this_cpu] != prev_pid)
0e9b07e5 1361 sched->nr_context_switch_bugs++;
c8a37751 1362 }
c8a37751 1363
9ec3f4e4
ACM
1364 if (sched->tp_handler->switch_event)
1365 err = sched->tp_handler->switch_event(sched, evsel, sample, machine);
2b7fcbc5
ACM
1366
1367 sched->curr_pid[this_cpu] = next_pid;
a116e05d 1368 return err;
419ab0d6
FW
1369}
1370
0e9b07e5 1371static int process_sched_runtime_event(struct perf_tool *tool,
2b7fcbc5 1372 struct perf_evsel *evsel,
1d037ca1 1373 struct perf_sample *sample,
4218e673 1374 struct machine *machine)
39aeb52f 1375{
0e9b07e5 1376 struct perf_sched *sched = container_of(tool, struct perf_sched, tool);
39aeb52f 1377
9ec3f4e4
ACM
1378 if (sched->tp_handler->runtime_event)
1379 return sched->tp_handler->runtime_event(sched, evsel, sample, machine);
a116e05d 1380
2b7fcbc5 1381 return 0;
39aeb52f 1382}
1383
cb627505
DA
1384static int perf_sched__process_fork_event(struct perf_tool *tool,
1385 union perf_event *event,
1386 struct perf_sample *sample,
1387 struct machine *machine)
fbf94829 1388{
0e9b07e5 1389 struct perf_sched *sched = container_of(tool, struct perf_sched, tool);
46538818 1390
cb627505
DA
1391 /* run the fork event through the perf machineruy */
1392 perf_event__process_fork(tool, event, sample, machine);
1393
1394 /* and then run additional processing needed for this command */
9ec3f4e4 1395 if (sched->tp_handler->fork_event)
cb627505 1396 return sched->tp_handler->fork_event(sched, event, machine);
a116e05d 1397
2b7fcbc5 1398 return 0;
fbf94829
IM
1399}
1400
0e9b07e5 1401static int process_sched_migrate_task_event(struct perf_tool *tool,
2b7fcbc5 1402 struct perf_evsel *evsel,
1d037ca1 1403 struct perf_sample *sample,
4218e673 1404 struct machine *machine)
55ffb7a6 1405{
0e9b07e5 1406 struct perf_sched *sched = container_of(tool, struct perf_sched, tool);
55ffb7a6 1407
9ec3f4e4
ACM
1408 if (sched->tp_handler->migrate_task_event)
1409 return sched->tp_handler->migrate_task_event(sched, evsel, sample, machine);
a116e05d 1410
2b7fcbc5 1411 return 0;
55ffb7a6
MG
1412}
1413
a116e05d 1414typedef int (*tracepoint_handler)(struct perf_tool *tool,
2b7fcbc5 1415 struct perf_evsel *evsel,
a116e05d 1416 struct perf_sample *sample,
4218e673 1417 struct machine *machine);
ec156764 1418
1d037ca1
IT
1419static int perf_sched__process_tracepoint_sample(struct perf_tool *tool __maybe_unused,
1420 union perf_event *event __maybe_unused,
ee29be62
ACM
1421 struct perf_sample *sample,
1422 struct perf_evsel *evsel,
1423 struct machine *machine)
0a02ad93 1424{
a116e05d 1425 int err = 0;
0a02ad93 1426
ee29be62
ACM
1427 evsel->hists.stats.total_period += sample->period;
1428 hists__inc_nr_events(&evsel->hists, PERF_RECORD_SAMPLE);
f39cdf25 1429
ee29be62
ACM
1430 if (evsel->handler.func != NULL) {
1431 tracepoint_handler f = evsel->handler.func;
2b7fcbc5 1432 err = f(tool, evsel, sample, machine);
ee29be62 1433 }
0a02ad93 1434
a116e05d 1435 return err;
0a02ad93
IM
1436}
1437
ad9def7c 1438static int perf_sched__read_events(struct perf_sched *sched,
0e9b07e5 1439 struct perf_session **psession)
0a02ad93 1440{
ee29be62
ACM
1441 const struct perf_evsel_str_handler handlers[] = {
1442 { "sched:sched_switch", process_sched_switch_event, },
1443 { "sched:sched_stat_runtime", process_sched_runtime_event, },
1444 { "sched:sched_wakeup", process_sched_wakeup_event, },
1445 { "sched:sched_wakeup_new", process_sched_wakeup_event, },
ee29be62
ACM
1446 { "sched:sched_migrate_task", process_sched_migrate_task_event, },
1447 };
da378962
ACM
1448 struct perf_session *session;
1449
70cb4e96 1450 session = perf_session__new(input_name, O_RDONLY, 0, false, &sched->tool);
a116e05d
ACM
1451 if (session == NULL) {
1452 pr_debug("No Memory for session\n");
1453 return -1;
1454 }
94c744b6 1455
a116e05d
ACM
1456 if (perf_session__set_tracepoints_handlers(session, handlers))
1457 goto out_delete;
ee29be62 1458
cee75ac7 1459 if (perf_session__has_traces(session, "record -R")) {
0e9b07e5 1460 int err = perf_session__process_events(session, &sched->tool);
a116e05d
ACM
1461 if (err) {
1462 pr_err("Failed to process events, error %d", err);
1463 goto out_delete;
1464 }
4c09bafa 1465
28a6b6aa
ACM
1466 sched->nr_events = session->stats.nr_events[0];
1467 sched->nr_lost_events = session->stats.total_lost;
1468 sched->nr_lost_chunks = session->stats.nr_events[PERF_RECORD_LOST];
cee75ac7 1469 }
d549c769 1470
4c09bafa
JO
1471 if (psession)
1472 *psession = session;
ad9def7c
DA
1473 else
1474 perf_session__delete(session);
a116e05d
ACM
1475
1476 return 0;
1477
1478out_delete:
1479 perf_session__delete(session);
1480 return -1;
0a02ad93
IM
1481}
1482
0e9b07e5 1483static void print_bad_events(struct perf_sched *sched)
0ec04e16 1484{
0e9b07e5 1485 if (sched->nr_unordered_timestamps && sched->nr_timestamps) {
0ec04e16 1486 printf(" INFO: %.3f%% unordered timestamps (%ld out of %ld)\n",
0e9b07e5
ACM
1487 (double)sched->nr_unordered_timestamps/(double)sched->nr_timestamps*100.0,
1488 sched->nr_unordered_timestamps, sched->nr_timestamps);
0ec04e16 1489 }
0e9b07e5 1490 if (sched->nr_lost_events && sched->nr_events) {
0ec04e16 1491 printf(" INFO: %.3f%% lost events (%ld out of %ld, in %ld chunks)\n",
0e9b07e5
ACM
1492 (double)sched->nr_lost_events/(double)sched->nr_events * 100.0,
1493 sched->nr_lost_events, sched->nr_events, sched->nr_lost_chunks);
0ec04e16 1494 }
0e9b07e5 1495 if (sched->nr_state_machine_bugs && sched->nr_timestamps) {
0ec04e16 1496 printf(" INFO: %.3f%% state machine bugs (%ld out of %ld)",
0e9b07e5
ACM
1497 (double)sched->nr_state_machine_bugs/(double)sched->nr_timestamps*100.0,
1498 sched->nr_state_machine_bugs, sched->nr_timestamps);
1499 if (sched->nr_lost_events)
0ec04e16
IM
1500 printf(" (due to lost events?)");
1501 printf("\n");
1502 }
0e9b07e5 1503 if (sched->nr_context_switch_bugs && sched->nr_timestamps) {
0ec04e16 1504 printf(" INFO: %.3f%% context switch bugs (%ld out of %ld)",
0e9b07e5
ACM
1505 (double)sched->nr_context_switch_bugs/(double)sched->nr_timestamps*100.0,
1506 sched->nr_context_switch_bugs, sched->nr_timestamps);
1507 if (sched->nr_lost_events)
0ec04e16
IM
1508 printf(" (due to lost events?)");
1509 printf("\n");
1510 }
1511}
1512
0e9b07e5 1513static int perf_sched__lat(struct perf_sched *sched)
0ec04e16
IM
1514{
1515 struct rb_node *next;
4c09bafa 1516 struct perf_session *session;
0ec04e16
IM
1517
1518 setup_pager();
ad9def7c
DA
1519
1520 /* save session -- references to threads are held in work_list */
1521 if (perf_sched__read_events(sched, &session))
a116e05d 1522 return -1;
ad9def7c 1523
0e9b07e5 1524 perf_sched__sort_lat(sched);
0ec04e16 1525
3786310a
FW
1526 printf("\n ---------------------------------------------------------------------------------------------------------------\n");
1527 printf(" Task | Runtime ms | Switches | Average delay ms | Maximum delay ms | Maximum delay at |\n");
1528 printf(" ---------------------------------------------------------------------------------------------------------------\n");
0ec04e16 1529
0e9b07e5 1530 next = rb_first(&sched->sorted_atom_root);
0ec04e16
IM
1531
1532 while (next) {
1533 struct work_atoms *work_list;
1534
1535 work_list = rb_entry(next, struct work_atoms, node);
0e9b07e5 1536 output_lat_thread(sched, work_list);
0ec04e16
IM
1537 next = rb_next(next);
1538 }
1539
1540 printf(" -----------------------------------------------------------------------------------------\n");
9486aa38 1541 printf(" TOTAL: |%11.3f ms |%9" PRIu64 " |\n",
0e9b07e5 1542 (double)sched->all_runtime / 1e6, sched->all_count);
0ec04e16
IM
1543
1544 printf(" ---------------------------------------------------\n");
1545
0e9b07e5 1546 print_bad_events(sched);
0ec04e16
IM
1547 printf("\n");
1548
4c09bafa 1549 perf_session__delete(session);
a116e05d 1550 return 0;
0ec04e16
IM
1551}
1552
0e9b07e5 1553static int perf_sched__map(struct perf_sched *sched)
0ec04e16 1554{
0e9b07e5 1555 sched->max_cpu = sysconf(_SC_NPROCESSORS_CONF);
40749d0f 1556
0ec04e16 1557 setup_pager();
ad9def7c 1558 if (perf_sched__read_events(sched, NULL))
a116e05d 1559 return -1;
0e9b07e5 1560 print_bad_events(sched);
a116e05d 1561 return 0;
0ec04e16
IM
1562}
1563
0e9b07e5 1564static int perf_sched__replay(struct perf_sched *sched)
0ec04e16
IM
1565{
1566 unsigned long i;
1567
0e9b07e5
ACM
1568 calibrate_run_measurement_overhead(sched);
1569 calibrate_sleep_measurement_overhead(sched);
0ec04e16 1570
0e9b07e5 1571 test_calibrations(sched);
0ec04e16 1572
ad9def7c 1573 if (perf_sched__read_events(sched, NULL))
a116e05d 1574 return -1;
0ec04e16 1575
0e9b07e5
ACM
1576 printf("nr_run_events: %ld\n", sched->nr_run_events);
1577 printf("nr_sleep_events: %ld\n", sched->nr_sleep_events);
1578 printf("nr_wakeup_events: %ld\n", sched->nr_wakeup_events);
0ec04e16 1579
0e9b07e5
ACM
1580 if (sched->targetless_wakeups)
1581 printf("target-less wakeups: %ld\n", sched->targetless_wakeups);
1582 if (sched->multitarget_wakeups)
1583 printf("multi-target wakeups: %ld\n", sched->multitarget_wakeups);
1584 if (sched->nr_run_events_optimized)
0ec04e16 1585 printf("run atoms optimized: %ld\n",
0e9b07e5 1586 sched->nr_run_events_optimized);
0ec04e16 1587
0e9b07e5
ACM
1588 print_task_traces(sched);
1589 add_cross_task_wakeups(sched);
0ec04e16 1590
0e9b07e5 1591 create_tasks(sched);
0ec04e16 1592 printf("------------------------------------------------------------\n");
0e9b07e5
ACM
1593 for (i = 0; i < sched->replay_repeat; i++)
1594 run_one_test(sched);
a116e05d
ACM
1595
1596 return 0;
0ec04e16
IM
1597}
1598
0e9b07e5
ACM
1599static void setup_sorting(struct perf_sched *sched, const struct option *options,
1600 const char * const usage_msg[])
daa1d7a5 1601{
0e9b07e5 1602 char *tmp, *tok, *str = strdup(sched->sort_order);
daa1d7a5
FW
1603
1604 for (tok = strtok_r(str, ", ", &tmp);
1605 tok; tok = strtok_r(NULL, ", ", &tmp)) {
0e9b07e5 1606 if (sort_dimension__add(tok, &sched->sort_list) < 0) {
daa1d7a5 1607 error("Unknown --sort key: `%s'", tok);
0e9b07e5 1608 usage_with_options(usage_msg, options);
daa1d7a5
FW
1609 }
1610 }
1611
1612 free(str);
1613
0e9b07e5 1614 sort_dimension__add("pid", &sched->cmp_pid);
daa1d7a5
FW
1615}
1616
1fc35b29
IM
1617static int __cmd_record(int argc, const char **argv)
1618{
1619 unsigned int rec_argc, i, j;
1620 const char **rec_argv;
0e9b07e5
ACM
1621 const char * const record_args[] = {
1622 "record",
1623 "-a",
1624 "-R",
0e9b07e5
ACM
1625 "-m", "1024",
1626 "-c", "1",
1627 "-e", "sched:sched_switch",
1628 "-e", "sched:sched_stat_wait",
1629 "-e", "sched:sched_stat_sleep",
1630 "-e", "sched:sched_stat_iowait",
1631 "-e", "sched:sched_stat_runtime",
0e9b07e5
ACM
1632 "-e", "sched:sched_process_fork",
1633 "-e", "sched:sched_wakeup",
1634 "-e", "sched:sched_migrate_task",
1635 };
1fc35b29
IM
1636
1637 rec_argc = ARRAY_SIZE(record_args) + argc - 1;
1638 rec_argv = calloc(rec_argc + 1, sizeof(char *));
1639
e462dc55 1640 if (rec_argv == NULL)
ce47dc56
CS
1641 return -ENOMEM;
1642
1fc35b29
IM
1643 for (i = 0; i < ARRAY_SIZE(record_args); i++)
1644 rec_argv[i] = strdup(record_args[i]);
1645
1646 for (j = 1; j < (unsigned int)argc; j++, i++)
1647 rec_argv[i] = argv[j];
1648
1649 BUG_ON(i != rec_argc);
1650
1651 return cmd_record(i, rec_argv, NULL);
1652}
1653
f36f83f9
NK
1654static const char default_sort_order[] = "avg, max, switch, runtime";
1655static struct perf_sched sched = {
1656 .tool = {
1657 .sample = perf_sched__process_tracepoint_sample,
1658 .comm = perf_event__process_comm,
1659 .lost = perf_event__process_lost,
cb627505 1660 .fork = perf_sched__process_fork_event,
f36f83f9
NK
1661 .ordered_samples = true,
1662 },
1663 .cmp_pid = LIST_HEAD_INIT(sched.cmp_pid),
1664 .sort_list = LIST_HEAD_INIT(sched.sort_list),
1665 .start_work_mutex = PTHREAD_MUTEX_INITIALIZER,
1666 .work_done_wait_mutex = PTHREAD_MUTEX_INITIALIZER,
1667 .curr_pid = { [0 ... MAX_CPUS - 1] = -1 },
1668 .sort_order = default_sort_order,
1669 .replay_repeat = 10,
1670 .profile_cpu = -1,
1671 .next_shortname1 = 'A',
1672 .next_shortname2 = '0',
1673};
1674
1d037ca1 1675int cmd_sched(int argc, const char **argv, const char *prefix __maybe_unused)
0a02ad93 1676{
0e9b07e5
ACM
1677 const struct option latency_options[] = {
1678 OPT_STRING('s', "sort", &sched.sort_order, "key[,key2...]",
1679 "sort by key(s): runtime, switch, avg, max"),
1680 OPT_INCR('v', "verbose", &verbose,
1681 "be more verbose (show symbol address, etc)"),
1682 OPT_INTEGER('C', "CPU", &sched.profile_cpu,
1683 "CPU to profile on"),
1684 OPT_BOOLEAN('D', "dump-raw-trace", &dump_trace,
1685 "dump raw trace in ASCII"),
1686 OPT_END()
1687 };
1688 const struct option replay_options[] = {
1689 OPT_UINTEGER('r', "repeat", &sched.replay_repeat,
1690 "repeat the workload replay N times (-1: infinite)"),
1691 OPT_INCR('v', "verbose", &verbose,
1692 "be more verbose (show symbol address, etc)"),
1693 OPT_BOOLEAN('D', "dump-raw-trace", &dump_trace,
1694 "dump raw trace in ASCII"),
1695 OPT_END()
1696 };
1697 const struct option sched_options[] = {
70cb4e96 1698 OPT_STRING('i', "input", &input_name, "file",
0e9b07e5
ACM
1699 "input file name"),
1700 OPT_INCR('v', "verbose", &verbose,
1701 "be more verbose (show symbol address, etc)"),
1702 OPT_BOOLEAN('D', "dump-raw-trace", &dump_trace,
1703 "dump raw trace in ASCII"),
1704 OPT_END()
1705 };
1706 const char * const latency_usage[] = {
1707 "perf sched latency [<options>]",
1708 NULL
1709 };
1710 const char * const replay_usage[] = {
1711 "perf sched replay [<options>]",
1712 NULL
1713 };
1714 const char * const sched_usage[] = {
1715 "perf sched [<options>] {record|latency|map|replay|script}",
1716 NULL
1717 };
1718 struct trace_sched_handler lat_ops = {
1719 .wakeup_event = latency_wakeup_event,
1720 .switch_event = latency_switch_event,
1721 .runtime_event = latency_runtime_event,
0e9b07e5
ACM
1722 .migrate_task_event = latency_migrate_task_event,
1723 };
1724 struct trace_sched_handler map_ops = {
1725 .switch_event = map_switch_event,
1726 };
1727 struct trace_sched_handler replay_ops = {
1728 .wakeup_event = replay_wakeup_event,
1729 .switch_event = replay_switch_event,
1730 .fork_event = replay_fork_event,
1731 };
1732
f2858d8a
IM
1733 argc = parse_options(argc, argv, sched_options, sched_usage,
1734 PARSE_OPT_STOP_AT_NON_OPTION);
1735 if (!argc)
1736 usage_with_options(sched_usage, sched_options);
0a02ad93 1737
c0777c5a 1738 /*
133dc4c3 1739 * Aliased to 'perf script' for now:
c0777c5a 1740 */
133dc4c3
IM
1741 if (!strcmp(argv[0], "script"))
1742 return cmd_script(argc, argv, prefix);
c0777c5a 1743
75be6cf4 1744 symbol__init();
1fc35b29
IM
1745 if (!strncmp(argv[0], "rec", 3)) {
1746 return __cmd_record(argc, argv);
1747 } else if (!strncmp(argv[0], "lat", 3)) {
0e9b07e5 1748 sched.tp_handler = &lat_ops;
f2858d8a
IM
1749 if (argc > 1) {
1750 argc = parse_options(argc, argv, latency_options, latency_usage, 0);
1751 if (argc)
1752 usage_with_options(latency_usage, latency_options);
f2858d8a 1753 }
0e9b07e5
ACM
1754 setup_sorting(&sched, latency_options, latency_usage);
1755 return perf_sched__lat(&sched);
0ec04e16 1756 } else if (!strcmp(argv[0], "map")) {
0e9b07e5
ACM
1757 sched.tp_handler = &map_ops;
1758 setup_sorting(&sched, latency_options, latency_usage);
1759 return perf_sched__map(&sched);
f2858d8a 1760 } else if (!strncmp(argv[0], "rep", 3)) {
0e9b07e5 1761 sched.tp_handler = &replay_ops;
f2858d8a
IM
1762 if (argc) {
1763 argc = parse_options(argc, argv, replay_options, replay_usage, 0);
1764 if (argc)
1765 usage_with_options(replay_usage, replay_options);
1766 }
0e9b07e5 1767 return perf_sched__replay(&sched);
f2858d8a
IM
1768 } else {
1769 usage_with_options(sched_usage, sched_options);
1770 }
1771
ec156764 1772 return 0;
0a02ad93 1773}
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