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Commit | Line | Data |
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0a02ad93 | 1 | #include "builtin.h" |
b1ffe8f3 | 2 | #include "perf.h" |
0a02ad93 IM |
3 | |
4 | #include "util/util.h" | |
5 | #include "util/cache.h" | |
6 | #include "util/symbol.h" | |
7 | #include "util/thread.h" | |
8 | #include "util/header.h" | |
94c744b6 | 9 | #include "util/session.h" |
0a02ad93 IM |
10 | |
11 | #include "util/parse-options.h" | |
b1ffe8f3 | 12 | #include "util/trace-event.h" |
0a02ad93 | 13 | |
0a02ad93 IM |
14 | #include "util/debug.h" |
15 | ||
b1ffe8f3 | 16 | #include <sys/prctl.h> |
0a02ad93 | 17 | |
b1ffe8f3 IM |
18 | #include <semaphore.h> |
19 | #include <pthread.h> | |
20 | #include <math.h> | |
419ab0d6 | 21 | |
ec156764 | 22 | static char const *input_name = "perf.data"; |
0a02ad93 | 23 | |
daa1d7a5 | 24 | static char default_sort_order[] = "avg, max, switch, runtime"; |
edb7c60e | 25 | static const char *sort_order = default_sort_order; |
daa1d7a5 | 26 | |
55ffb7a6 MG |
27 | static int profile_cpu = -1; |
28 | ||
b1ffe8f3 IM |
29 | #define PR_SET_NAME 15 /* Set process name */ |
30 | #define MAX_CPUS 4096 | |
0a02ad93 | 31 | |
b1ffe8f3 IM |
32 | static u64 run_measurement_overhead; |
33 | static u64 sleep_measurement_overhead; | |
ec156764 | 34 | |
b1ffe8f3 IM |
35 | #define COMM_LEN 20 |
36 | #define SYM_LEN 129 | |
ec156764 | 37 | |
b1ffe8f3 | 38 | #define MAX_PID 65536 |
ec156764 | 39 | |
b1ffe8f3 | 40 | static unsigned long nr_tasks; |
ec156764 | 41 | |
39aeb52f | 42 | struct sched_atom; |
ec156764 | 43 | |
b1ffe8f3 IM |
44 | struct task_desc { |
45 | unsigned long nr; | |
46 | unsigned long pid; | |
47 | char comm[COMM_LEN]; | |
ec156764 | 48 | |
b1ffe8f3 IM |
49 | unsigned long nr_events; |
50 | unsigned long curr_event; | |
39aeb52f | 51 | struct sched_atom **atoms; |
b1ffe8f3 IM |
52 | |
53 | pthread_t thread; | |
54 | sem_t sleep_sem; | |
ec156764 | 55 | |
b1ffe8f3 IM |
56 | sem_t ready_for_work; |
57 | sem_t work_done_sem; | |
58 | ||
59 | u64 cpu_usage; | |
60 | }; | |
61 | ||
62 | enum sched_event_type { | |
63 | SCHED_EVENT_RUN, | |
64 | SCHED_EVENT_SLEEP, | |
65 | SCHED_EVENT_WAKEUP, | |
55ffb7a6 | 66 | SCHED_EVENT_MIGRATION, |
b1ffe8f3 IM |
67 | }; |
68 | ||
39aeb52f | 69 | struct sched_atom { |
b1ffe8f3 | 70 | enum sched_event_type type; |
eed05fe7 | 71 | int specific_wait; |
b1ffe8f3 IM |
72 | u64 timestamp; |
73 | u64 duration; | |
74 | unsigned long nr; | |
b1ffe8f3 IM |
75 | sem_t *wait_sem; |
76 | struct task_desc *wakee; | |
77 | }; | |
78 | ||
79 | static struct task_desc *pid_to_task[MAX_PID]; | |
80 | ||
81 | static struct task_desc **tasks; | |
82 | ||
83 | static pthread_mutex_t start_work_mutex = PTHREAD_MUTEX_INITIALIZER; | |
84 | static u64 start_time; | |
85 | ||
86 | static pthread_mutex_t work_done_wait_mutex = PTHREAD_MUTEX_INITIALIZER; | |
ec156764 | 87 | |
b1ffe8f3 IM |
88 | static unsigned long nr_run_events; |
89 | static unsigned long nr_sleep_events; | |
90 | static unsigned long nr_wakeup_events; | |
91 | ||
92 | static unsigned long nr_sleep_corrections; | |
93 | static unsigned long nr_run_events_optimized; | |
94 | ||
95 | static unsigned long targetless_wakeups; | |
96 | static unsigned long multitarget_wakeups; | |
97 | ||
98 | static u64 cpu_usage; | |
99 | static u64 runavg_cpu_usage; | |
100 | static u64 parent_cpu_usage; | |
101 | static u64 runavg_parent_cpu_usage; | |
102 | ||
103 | static unsigned long nr_runs; | |
104 | static u64 sum_runtime; | |
105 | static u64 sum_fluct; | |
106 | static u64 run_avg; | |
107 | ||
1967936d | 108 | static unsigned int replay_repeat = 10; |
ea57c4f5 | 109 | static unsigned long nr_timestamps; |
dc02bf71 IM |
110 | static unsigned long nr_unordered_timestamps; |
111 | static unsigned long nr_state_machine_bugs; | |
c8a37751 | 112 | static unsigned long nr_context_switch_bugs; |
dc02bf71 IM |
113 | static unsigned long nr_events; |
114 | static unsigned long nr_lost_chunks; | |
115 | static unsigned long nr_lost_events; | |
b1ffe8f3 IM |
116 | |
117 | #define TASK_STATE_TO_CHAR_STR "RSDTtZX" | |
118 | ||
119 | enum thread_state { | |
120 | THREAD_SLEEPING = 0, | |
121 | THREAD_WAIT_CPU, | |
122 | THREAD_SCHED_IN, | |
123 | THREAD_IGNORE | |
124 | }; | |
125 | ||
126 | struct work_atom { | |
127 | struct list_head list; | |
128 | enum thread_state state; | |
aa1ab9d2 | 129 | u64 sched_out_time; |
b1ffe8f3 IM |
130 | u64 wake_up_time; |
131 | u64 sched_in_time; | |
132 | u64 runtime; | |
133 | }; | |
134 | ||
39aeb52f | 135 | struct work_atoms { |
136 | struct list_head work_list; | |
b1ffe8f3 IM |
137 | struct thread *thread; |
138 | struct rb_node node; | |
139 | u64 max_lat; | |
3786310a | 140 | u64 max_lat_at; |
b1ffe8f3 IM |
141 | u64 total_lat; |
142 | u64 nb_atoms; | |
143 | u64 total_runtime; | |
144 | }; | |
145 | ||
39aeb52f | 146 | typedef int (*sort_fn_t)(struct work_atoms *, struct work_atoms *); |
b1ffe8f3 IM |
147 | |
148 | static struct rb_root atom_root, sorted_atom_root; | |
149 | ||
150 | static u64 all_runtime; | |
151 | static u64 all_count; | |
152 | ||
b1ffe8f3 IM |
153 | |
154 | static u64 get_nsecs(void) | |
ec156764 IM |
155 | { |
156 | struct timespec ts; | |
157 | ||
158 | clock_gettime(CLOCK_MONOTONIC, &ts); | |
159 | ||
160 | return ts.tv_sec * 1000000000ULL + ts.tv_nsec; | |
161 | } | |
162 | ||
b1ffe8f3 | 163 | static void burn_nsecs(u64 nsecs) |
ec156764 | 164 | { |
b1ffe8f3 | 165 | u64 T0 = get_nsecs(), T1; |
ec156764 IM |
166 | |
167 | do { | |
168 | T1 = get_nsecs(); | |
169 | } while (T1 + run_measurement_overhead < T0 + nsecs); | |
170 | } | |
171 | ||
b1ffe8f3 | 172 | static void sleep_nsecs(u64 nsecs) |
ec156764 IM |
173 | { |
174 | struct timespec ts; | |
175 | ||
176 | ts.tv_nsec = nsecs % 999999999; | |
177 | ts.tv_sec = nsecs / 999999999; | |
178 | ||
179 | nanosleep(&ts, NULL); | |
180 | } | |
181 | ||
182 | static void calibrate_run_measurement_overhead(void) | |
183 | { | |
b1ffe8f3 | 184 | u64 T0, T1, delta, min_delta = 1000000000ULL; |
ec156764 IM |
185 | int i; |
186 | ||
187 | for (i = 0; i < 10; i++) { | |
188 | T0 = get_nsecs(); | |
189 | burn_nsecs(0); | |
190 | T1 = get_nsecs(); | |
191 | delta = T1-T0; | |
192 | min_delta = min(min_delta, delta); | |
193 | } | |
194 | run_measurement_overhead = min_delta; | |
195 | ||
9486aa38 | 196 | printf("run measurement overhead: %" PRIu64 " nsecs\n", min_delta); |
ec156764 IM |
197 | } |
198 | ||
199 | static void calibrate_sleep_measurement_overhead(void) | |
200 | { | |
b1ffe8f3 | 201 | u64 T0, T1, delta, min_delta = 1000000000ULL; |
ec156764 IM |
202 | int i; |
203 | ||
204 | for (i = 0; i < 10; i++) { | |
205 | T0 = get_nsecs(); | |
206 | sleep_nsecs(10000); | |
207 | T1 = get_nsecs(); | |
208 | delta = T1-T0; | |
209 | min_delta = min(min_delta, delta); | |
210 | } | |
211 | min_delta -= 10000; | |
212 | sleep_measurement_overhead = min_delta; | |
213 | ||
9486aa38 | 214 | printf("sleep measurement overhead: %" PRIu64 " nsecs\n", min_delta); |
ec156764 IM |
215 | } |
216 | ||
39aeb52f | 217 | static struct sched_atom * |
b1ffe8f3 | 218 | get_new_event(struct task_desc *task, u64 timestamp) |
ec156764 | 219 | { |
36479484 | 220 | struct sched_atom *event = zalloc(sizeof(*event)); |
ec156764 IM |
221 | unsigned long idx = task->nr_events; |
222 | size_t size; | |
223 | ||
224 | event->timestamp = timestamp; | |
225 | event->nr = idx; | |
226 | ||
227 | task->nr_events++; | |
39aeb52f | 228 | size = sizeof(struct sched_atom *) * task->nr_events; |
229 | task->atoms = realloc(task->atoms, size); | |
230 | BUG_ON(!task->atoms); | |
ec156764 | 231 | |
39aeb52f | 232 | task->atoms[idx] = event; |
ec156764 IM |
233 | |
234 | return event; | |
235 | } | |
236 | ||
39aeb52f | 237 | static struct sched_atom *last_event(struct task_desc *task) |
ec156764 IM |
238 | { |
239 | if (!task->nr_events) | |
240 | return NULL; | |
241 | ||
39aeb52f | 242 | return task->atoms[task->nr_events - 1]; |
ec156764 IM |
243 | } |
244 | ||
245 | static void | |
b1ffe8f3 | 246 | add_sched_event_run(struct task_desc *task, u64 timestamp, u64 duration) |
ec156764 | 247 | { |
39aeb52f | 248 | struct sched_atom *event, *curr_event = last_event(task); |
ec156764 IM |
249 | |
250 | /* | |
fbf94829 IM |
251 | * optimize an existing RUN event by merging this one |
252 | * to it: | |
253 | */ | |
ec156764 IM |
254 | if (curr_event && curr_event->type == SCHED_EVENT_RUN) { |
255 | nr_run_events_optimized++; | |
256 | curr_event->duration += duration; | |
257 | return; | |
258 | } | |
259 | ||
260 | event = get_new_event(task, timestamp); | |
261 | ||
262 | event->type = SCHED_EVENT_RUN; | |
263 | event->duration = duration; | |
264 | ||
265 | nr_run_events++; | |
266 | } | |
267 | ||
ec156764 | 268 | static void |
b1ffe8f3 | 269 | add_sched_event_wakeup(struct task_desc *task, u64 timestamp, |
ec156764 IM |
270 | struct task_desc *wakee) |
271 | { | |
39aeb52f | 272 | struct sched_atom *event, *wakee_event; |
ec156764 IM |
273 | |
274 | event = get_new_event(task, timestamp); | |
275 | event->type = SCHED_EVENT_WAKEUP; | |
276 | event->wakee = wakee; | |
277 | ||
278 | wakee_event = last_event(wakee); | |
279 | if (!wakee_event || wakee_event->type != SCHED_EVENT_SLEEP) { | |
280 | targetless_wakeups++; | |
281 | return; | |
282 | } | |
283 | if (wakee_event->wait_sem) { | |
284 | multitarget_wakeups++; | |
285 | return; | |
286 | } | |
287 | ||
36479484 | 288 | wakee_event->wait_sem = zalloc(sizeof(*wakee_event->wait_sem)); |
ec156764 IM |
289 | sem_init(wakee_event->wait_sem, 0, 0); |
290 | wakee_event->specific_wait = 1; | |
291 | event->wait_sem = wakee_event->wait_sem; | |
292 | ||
293 | nr_wakeup_events++; | |
294 | } | |
295 | ||
296 | static void | |
b1ffe8f3 | 297 | add_sched_event_sleep(struct task_desc *task, u64 timestamp, |
ad236fd2 | 298 | u64 task_state __used) |
ec156764 | 299 | { |
39aeb52f | 300 | struct sched_atom *event = get_new_event(task, timestamp); |
ec156764 IM |
301 | |
302 | event->type = SCHED_EVENT_SLEEP; | |
303 | ||
304 | nr_sleep_events++; | |
305 | } | |
306 | ||
307 | static struct task_desc *register_pid(unsigned long pid, const char *comm) | |
308 | { | |
309 | struct task_desc *task; | |
310 | ||
311 | BUG_ON(pid >= MAX_PID); | |
312 | ||
313 | task = pid_to_task[pid]; | |
314 | ||
315 | if (task) | |
316 | return task; | |
317 | ||
36479484 | 318 | task = zalloc(sizeof(*task)); |
ec156764 IM |
319 | task->pid = pid; |
320 | task->nr = nr_tasks; | |
321 | strcpy(task->comm, comm); | |
322 | /* | |
323 | * every task starts in sleeping state - this gets ignored | |
324 | * if there's no wakeup pointing to this sleep state: | |
325 | */ | |
326 | add_sched_event_sleep(task, 0, 0); | |
327 | ||
328 | pid_to_task[pid] = task; | |
329 | nr_tasks++; | |
330 | tasks = realloc(tasks, nr_tasks*sizeof(struct task_task *)); | |
331 | BUG_ON(!tasks); | |
332 | tasks[task->nr] = task; | |
333 | ||
ad236fd2 IM |
334 | if (verbose) |
335 | printf("registered task #%ld, PID %ld (%s)\n", nr_tasks, pid, comm); | |
ec156764 IM |
336 | |
337 | return task; | |
338 | } | |
339 | ||
340 | ||
ec156764 IM |
341 | static void print_task_traces(void) |
342 | { | |
343 | struct task_desc *task; | |
344 | unsigned long i; | |
345 | ||
346 | for (i = 0; i < nr_tasks; i++) { | |
347 | task = tasks[i]; | |
ad236fd2 | 348 | printf("task %6ld (%20s:%10ld), nr_events: %ld\n", |
ec156764 IM |
349 | task->nr, task->comm, task->pid, task->nr_events); |
350 | } | |
351 | } | |
352 | ||
353 | static void add_cross_task_wakeups(void) | |
354 | { | |
355 | struct task_desc *task1, *task2; | |
356 | unsigned long i, j; | |
357 | ||
358 | for (i = 0; i < nr_tasks; i++) { | |
359 | task1 = tasks[i]; | |
360 | j = i + 1; | |
361 | if (j == nr_tasks) | |
362 | j = 0; | |
363 | task2 = tasks[j]; | |
364 | add_sched_event_wakeup(task1, 0, task2); | |
365 | } | |
366 | } | |
367 | ||
368 | static void | |
39aeb52f | 369 | process_sched_event(struct task_desc *this_task __used, struct sched_atom *atom) |
ec156764 IM |
370 | { |
371 | int ret = 0; | |
ec156764 | 372 | |
39aeb52f | 373 | switch (atom->type) { |
ec156764 | 374 | case SCHED_EVENT_RUN: |
39aeb52f | 375 | burn_nsecs(atom->duration); |
ec156764 IM |
376 | break; |
377 | case SCHED_EVENT_SLEEP: | |
39aeb52f | 378 | if (atom->wait_sem) |
379 | ret = sem_wait(atom->wait_sem); | |
ec156764 IM |
380 | BUG_ON(ret); |
381 | break; | |
382 | case SCHED_EVENT_WAKEUP: | |
39aeb52f | 383 | if (atom->wait_sem) |
384 | ret = sem_post(atom->wait_sem); | |
ec156764 IM |
385 | BUG_ON(ret); |
386 | break; | |
55ffb7a6 MG |
387 | case SCHED_EVENT_MIGRATION: |
388 | break; | |
ec156764 IM |
389 | default: |
390 | BUG_ON(1); | |
391 | } | |
392 | } | |
393 | ||
b1ffe8f3 | 394 | static u64 get_cpu_usage_nsec_parent(void) |
ec156764 IM |
395 | { |
396 | struct rusage ru; | |
b1ffe8f3 | 397 | u64 sum; |
ec156764 IM |
398 | int err; |
399 | ||
400 | err = getrusage(RUSAGE_SELF, &ru); | |
401 | BUG_ON(err); | |
402 | ||
403 | sum = ru.ru_utime.tv_sec*1e9 + ru.ru_utime.tv_usec*1e3; | |
404 | sum += ru.ru_stime.tv_sec*1e9 + ru.ru_stime.tv_usec*1e3; | |
405 | ||
406 | return sum; | |
407 | } | |
408 | ||
c0c9e721 | 409 | static int self_open_counters(void) |
ec156764 | 410 | { |
c0c9e721 XG |
411 | struct perf_event_attr attr; |
412 | int fd; | |
ec156764 | 413 | |
c0c9e721 | 414 | memset(&attr, 0, sizeof(attr)); |
ec156764 | 415 | |
c0c9e721 XG |
416 | attr.type = PERF_TYPE_SOFTWARE; |
417 | attr.config = PERF_COUNT_SW_TASK_CLOCK; | |
ec156764 | 418 | |
c0c9e721 XG |
419 | fd = sys_perf_event_open(&attr, 0, -1, -1, 0); |
420 | ||
421 | if (fd < 0) | |
422 | die("Error: sys_perf_event_open() syscall returned" | |
423 | "with %d (%s)\n", fd, strerror(errno)); | |
424 | return fd; | |
425 | } | |
426 | ||
427 | static u64 get_cpu_usage_nsec_self(int fd) | |
428 | { | |
429 | u64 runtime; | |
430 | int ret; | |
431 | ||
432 | ret = read(fd, &runtime, sizeof(runtime)); | |
433 | BUG_ON(ret != sizeof(runtime)); | |
434 | ||
435 | return runtime; | |
ec156764 IM |
436 | } |
437 | ||
438 | static void *thread_func(void *ctx) | |
439 | { | |
440 | struct task_desc *this_task = ctx; | |
b1ffe8f3 | 441 | u64 cpu_usage_0, cpu_usage_1; |
ec156764 IM |
442 | unsigned long i, ret; |
443 | char comm2[22]; | |
c0c9e721 | 444 | int fd; |
ec156764 | 445 | |
ec156764 IM |
446 | sprintf(comm2, ":%s", this_task->comm); |
447 | prctl(PR_SET_NAME, comm2); | |
c0c9e721 | 448 | fd = self_open_counters(); |
ec156764 IM |
449 | |
450 | again: | |
451 | ret = sem_post(&this_task->ready_for_work); | |
452 | BUG_ON(ret); | |
ec156764 IM |
453 | ret = pthread_mutex_lock(&start_work_mutex); |
454 | BUG_ON(ret); | |
455 | ret = pthread_mutex_unlock(&start_work_mutex); | |
456 | BUG_ON(ret); | |
ec156764 | 457 | |
c0c9e721 | 458 | cpu_usage_0 = get_cpu_usage_nsec_self(fd); |
ec156764 IM |
459 | |
460 | for (i = 0; i < this_task->nr_events; i++) { | |
461 | this_task->curr_event = i; | |
39aeb52f | 462 | process_sched_event(this_task, this_task->atoms[i]); |
ec156764 IM |
463 | } |
464 | ||
c0c9e721 | 465 | cpu_usage_1 = get_cpu_usage_nsec_self(fd); |
ec156764 | 466 | this_task->cpu_usage = cpu_usage_1 - cpu_usage_0; |
ec156764 IM |
467 | ret = sem_post(&this_task->work_done_sem); |
468 | BUG_ON(ret); | |
ec156764 IM |
469 | |
470 | ret = pthread_mutex_lock(&work_done_wait_mutex); | |
471 | BUG_ON(ret); | |
472 | ret = pthread_mutex_unlock(&work_done_wait_mutex); | |
473 | BUG_ON(ret); | |
ec156764 IM |
474 | |
475 | goto again; | |
476 | } | |
477 | ||
478 | static void create_tasks(void) | |
479 | { | |
480 | struct task_desc *task; | |
481 | pthread_attr_t attr; | |
482 | unsigned long i; | |
483 | int err; | |
484 | ||
485 | err = pthread_attr_init(&attr); | |
486 | BUG_ON(err); | |
12f7e036 JP |
487 | err = pthread_attr_setstacksize(&attr, |
488 | (size_t) max(16 * 1024, PTHREAD_STACK_MIN)); | |
ec156764 IM |
489 | BUG_ON(err); |
490 | err = pthread_mutex_lock(&start_work_mutex); | |
491 | BUG_ON(err); | |
492 | err = pthread_mutex_lock(&work_done_wait_mutex); | |
493 | BUG_ON(err); | |
494 | for (i = 0; i < nr_tasks; i++) { | |
495 | task = tasks[i]; | |
496 | sem_init(&task->sleep_sem, 0, 0); | |
497 | sem_init(&task->ready_for_work, 0, 0); | |
498 | sem_init(&task->work_done_sem, 0, 0); | |
499 | task->curr_event = 0; | |
500 | err = pthread_create(&task->thread, &attr, thread_func, task); | |
501 | BUG_ON(err); | |
502 | } | |
503 | } | |
504 | ||
ec156764 IM |
505 | static void wait_for_tasks(void) |
506 | { | |
b1ffe8f3 | 507 | u64 cpu_usage_0, cpu_usage_1; |
ec156764 IM |
508 | struct task_desc *task; |
509 | unsigned long i, ret; | |
510 | ||
ec156764 | 511 | start_time = get_nsecs(); |
ec156764 IM |
512 | cpu_usage = 0; |
513 | pthread_mutex_unlock(&work_done_wait_mutex); | |
514 | ||
515 | for (i = 0; i < nr_tasks; i++) { | |
516 | task = tasks[i]; | |
517 | ret = sem_wait(&task->ready_for_work); | |
518 | BUG_ON(ret); | |
519 | sem_init(&task->ready_for_work, 0, 0); | |
520 | } | |
521 | ret = pthread_mutex_lock(&work_done_wait_mutex); | |
522 | BUG_ON(ret); | |
523 | ||
524 | cpu_usage_0 = get_cpu_usage_nsec_parent(); | |
525 | ||
526 | pthread_mutex_unlock(&start_work_mutex); | |
527 | ||
ec156764 IM |
528 | for (i = 0; i < nr_tasks; i++) { |
529 | task = tasks[i]; | |
530 | ret = sem_wait(&task->work_done_sem); | |
531 | BUG_ON(ret); | |
532 | sem_init(&task->work_done_sem, 0, 0); | |
533 | cpu_usage += task->cpu_usage; | |
534 | task->cpu_usage = 0; | |
535 | } | |
536 | ||
537 | cpu_usage_1 = get_cpu_usage_nsec_parent(); | |
538 | if (!runavg_cpu_usage) | |
539 | runavg_cpu_usage = cpu_usage; | |
540 | runavg_cpu_usage = (runavg_cpu_usage*9 + cpu_usage)/10; | |
541 | ||
542 | parent_cpu_usage = cpu_usage_1 - cpu_usage_0; | |
543 | if (!runavg_parent_cpu_usage) | |
544 | runavg_parent_cpu_usage = parent_cpu_usage; | |
545 | runavg_parent_cpu_usage = (runavg_parent_cpu_usage*9 + | |
546 | parent_cpu_usage)/10; | |
547 | ||
548 | ret = pthread_mutex_lock(&start_work_mutex); | |
549 | BUG_ON(ret); | |
550 | ||
551 | for (i = 0; i < nr_tasks; i++) { | |
552 | task = tasks[i]; | |
553 | sem_init(&task->sleep_sem, 0, 0); | |
554 | task->curr_event = 0; | |
555 | } | |
556 | } | |
557 | ||
ec156764 IM |
558 | static void run_one_test(void) |
559 | { | |
fb7d0b3c | 560 | u64 T0, T1, delta, avg_delta, fluct; |
ec156764 IM |
561 | |
562 | T0 = get_nsecs(); | |
563 | wait_for_tasks(); | |
564 | T1 = get_nsecs(); | |
565 | ||
566 | delta = T1 - T0; | |
567 | sum_runtime += delta; | |
568 | nr_runs++; | |
569 | ||
570 | avg_delta = sum_runtime / nr_runs; | |
571 | if (delta < avg_delta) | |
572 | fluct = avg_delta - delta; | |
573 | else | |
574 | fluct = delta - avg_delta; | |
575 | sum_fluct += fluct; | |
ec156764 IM |
576 | if (!run_avg) |
577 | run_avg = delta; | |
578 | run_avg = (run_avg*9 + delta)/10; | |
579 | ||
ad236fd2 | 580 | printf("#%-3ld: %0.3f, ", |
ec156764 IM |
581 | nr_runs, (double)delta/1000000.0); |
582 | ||
ad236fd2 | 583 | printf("ravg: %0.2f, ", |
ec156764 IM |
584 | (double)run_avg/1e6); |
585 | ||
ad236fd2 | 586 | printf("cpu: %0.2f / %0.2f", |
ec156764 IM |
587 | (double)cpu_usage/1e6, (double)runavg_cpu_usage/1e6); |
588 | ||
589 | #if 0 | |
590 | /* | |
fbf94829 IM |
591 | * rusage statistics done by the parent, these are less |
592 | * accurate than the sum_exec_runtime based statistics: | |
593 | */ | |
ad236fd2 | 594 | printf(" [%0.2f / %0.2f]", |
ec156764 IM |
595 | (double)parent_cpu_usage/1e6, |
596 | (double)runavg_parent_cpu_usage/1e6); | |
597 | #endif | |
598 | ||
ad236fd2 | 599 | printf("\n"); |
ec156764 IM |
600 | |
601 | if (nr_sleep_corrections) | |
ad236fd2 | 602 | printf(" (%ld sleep corrections)\n", nr_sleep_corrections); |
ec156764 IM |
603 | nr_sleep_corrections = 0; |
604 | } | |
605 | ||
606 | static void test_calibrations(void) | |
607 | { | |
b1ffe8f3 | 608 | u64 T0, T1; |
ec156764 IM |
609 | |
610 | T0 = get_nsecs(); | |
611 | burn_nsecs(1e6); | |
612 | T1 = get_nsecs(); | |
613 | ||
9486aa38 | 614 | printf("the run test took %" PRIu64 " nsecs\n", T1 - T0); |
ec156764 IM |
615 | |
616 | T0 = get_nsecs(); | |
617 | sleep_nsecs(1e6); | |
618 | T1 = get_nsecs(); | |
619 | ||
9486aa38 | 620 | printf("the sleep test took %" PRIu64 " nsecs\n", T1 - T0); |
ec156764 IM |
621 | } |
622 | ||
46538818 FW |
623 | #define FILL_FIELD(ptr, field, event, data) \ |
624 | ptr.field = (typeof(ptr.field)) raw_field_value(event, #field, data) | |
625 | ||
626 | #define FILL_ARRAY(ptr, array, event, data) \ | |
627 | do { \ | |
628 | void *__array = raw_field_ptr(event, #array, data); \ | |
629 | memcpy(ptr.array, __array, sizeof(ptr.array)); \ | |
630 | } while(0) | |
631 | ||
632 | #define FILL_COMMON_FIELDS(ptr, event, data) \ | |
633 | do { \ | |
634 | FILL_FIELD(ptr, common_type, event, data); \ | |
635 | FILL_FIELD(ptr, common_flags, event, data); \ | |
636 | FILL_FIELD(ptr, common_preempt_count, event, data); \ | |
637 | FILL_FIELD(ptr, common_pid, event, data); \ | |
638 | FILL_FIELD(ptr, common_tgid, event, data); \ | |
639 | } while (0) | |
640 | ||
419ab0d6 FW |
641 | |
642 | ||
643 | struct trace_switch_event { | |
644 | u32 size; | |
645 | ||
646 | u16 common_type; | |
647 | u8 common_flags; | |
648 | u8 common_preempt_count; | |
649 | u32 common_pid; | |
650 | u32 common_tgid; | |
651 | ||
652 | char prev_comm[16]; | |
653 | u32 prev_pid; | |
654 | u32 prev_prio; | |
655 | u64 prev_state; | |
656 | char next_comm[16]; | |
657 | u32 next_pid; | |
658 | u32 next_prio; | |
659 | }; | |
660 | ||
39aeb52f | 661 | struct trace_runtime_event { |
662 | u32 size; | |
663 | ||
664 | u16 common_type; | |
665 | u8 common_flags; | |
666 | u8 common_preempt_count; | |
667 | u32 common_pid; | |
668 | u32 common_tgid; | |
669 | ||
670 | char comm[16]; | |
671 | u32 pid; | |
672 | u64 runtime; | |
673 | u64 vruntime; | |
674 | }; | |
419ab0d6 | 675 | |
fbf94829 IM |
676 | struct trace_wakeup_event { |
677 | u32 size; | |
678 | ||
679 | u16 common_type; | |
680 | u8 common_flags; | |
681 | u8 common_preempt_count; | |
682 | u32 common_pid; | |
683 | u32 common_tgid; | |
684 | ||
685 | char comm[16]; | |
686 | u32 pid; | |
687 | ||
688 | u32 prio; | |
689 | u32 success; | |
690 | u32 cpu; | |
691 | }; | |
692 | ||
419ab0d6 FW |
693 | struct trace_fork_event { |
694 | u32 size; | |
46538818 | 695 | |
419ab0d6 FW |
696 | u16 common_type; |
697 | u8 common_flags; | |
698 | u8 common_preempt_count; | |
699 | u32 common_pid; | |
700 | u32 common_tgid; | |
701 | ||
702 | char parent_comm[16]; | |
703 | u32 parent_pid; | |
704 | char child_comm[16]; | |
705 | u32 child_pid; | |
706 | }; | |
707 | ||
55ffb7a6 MG |
708 | struct trace_migrate_task_event { |
709 | u32 size; | |
710 | ||
711 | u16 common_type; | |
712 | u8 common_flags; | |
713 | u8 common_preempt_count; | |
714 | u32 common_pid; | |
715 | u32 common_tgid; | |
716 | ||
717 | char comm[16]; | |
718 | u32 pid; | |
719 | ||
720 | u32 prio; | |
721 | u32 cpu; | |
722 | }; | |
723 | ||
419ab0d6 FW |
724 | struct trace_sched_handler { |
725 | void (*switch_event)(struct trace_switch_event *, | |
b3165f41 | 726 | struct perf_session *, |
419ab0d6 FW |
727 | struct event *, |
728 | int cpu, | |
729 | u64 timestamp, | |
730 | struct thread *thread); | |
731 | ||
39aeb52f | 732 | void (*runtime_event)(struct trace_runtime_event *, |
b3165f41 | 733 | struct perf_session *, |
39aeb52f | 734 | struct event *, |
735 | int cpu, | |
736 | u64 timestamp, | |
737 | struct thread *thread); | |
738 | ||
419ab0d6 | 739 | void (*wakeup_event)(struct trace_wakeup_event *, |
b3165f41 | 740 | struct perf_session *, |
419ab0d6 FW |
741 | struct event *, |
742 | int cpu, | |
743 | u64 timestamp, | |
744 | struct thread *thread); | |
745 | ||
746 | void (*fork_event)(struct trace_fork_event *, | |
747 | struct event *, | |
748 | int cpu, | |
749 | u64 timestamp, | |
750 | struct thread *thread); | |
55ffb7a6 MG |
751 | |
752 | void (*migrate_task_event)(struct trace_migrate_task_event *, | |
b3165f41 | 753 | struct perf_session *session, |
55ffb7a6 MG |
754 | struct event *, |
755 | int cpu, | |
756 | u64 timestamp, | |
757 | struct thread *thread); | |
419ab0d6 | 758 | }; |
46538818 | 759 | |
46538818 | 760 | |
419ab0d6 FW |
761 | static void |
762 | replay_wakeup_event(struct trace_wakeup_event *wakeup_event, | |
b3165f41 | 763 | struct perf_session *session __used, |
419ab0d6 FW |
764 | struct event *event, |
765 | int cpu __used, | |
766 | u64 timestamp __used, | |
767 | struct thread *thread __used) | |
768 | { | |
769 | struct task_desc *waker, *wakee; | |
fbf94829 | 770 | |
ad236fd2 IM |
771 | if (verbose) { |
772 | printf("sched_wakeup event %p\n", event); | |
fbf94829 | 773 | |
ad236fd2 | 774 | printf(" ... pid %d woke up %s/%d\n", |
419ab0d6 FW |
775 | wakeup_event->common_pid, |
776 | wakeup_event->comm, | |
777 | wakeup_event->pid); | |
ad236fd2 | 778 | } |
fbf94829 | 779 | |
419ab0d6 FW |
780 | waker = register_pid(wakeup_event->common_pid, "<unknown>"); |
781 | wakee = register_pid(wakeup_event->pid, wakeup_event->comm); | |
fbf94829 IM |
782 | |
783 | add_sched_event_wakeup(waker, timestamp, wakee); | |
ec156764 IM |
784 | } |
785 | ||
d1153389 | 786 | static u64 cpu_last_switched[MAX_CPUS]; |
fbf94829 IM |
787 | |
788 | static void | |
419ab0d6 | 789 | replay_switch_event(struct trace_switch_event *switch_event, |
b3165f41 | 790 | struct perf_session *session __used, |
419ab0d6 FW |
791 | struct event *event, |
792 | int cpu, | |
793 | u64 timestamp, | |
794 | struct thread *thread __used) | |
ec156764 | 795 | { |
fb7d0b3c | 796 | struct task_desc *prev, __used *next; |
fbf94829 IM |
797 | u64 timestamp0; |
798 | s64 delta; | |
799 | ||
ad236fd2 IM |
800 | if (verbose) |
801 | printf("sched_switch event %p\n", event); | |
802 | ||
fbf94829 IM |
803 | if (cpu >= MAX_CPUS || cpu < 0) |
804 | return; | |
805 | ||
806 | timestamp0 = cpu_last_switched[cpu]; | |
807 | if (timestamp0) | |
808 | delta = timestamp - timestamp0; | |
809 | else | |
810 | delta = 0; | |
811 | ||
812 | if (delta < 0) | |
9486aa38 | 813 | die("hm, delta: %" PRIu64 " < 0 ?\n", delta); |
fbf94829 | 814 | |
ad236fd2 | 815 | if (verbose) { |
9486aa38 | 816 | printf(" ... switch from %s/%d to %s/%d [ran %" PRIu64 " nsecs]\n", |
419ab0d6 FW |
817 | switch_event->prev_comm, switch_event->prev_pid, |
818 | switch_event->next_comm, switch_event->next_pid, | |
ad236fd2 IM |
819 | delta); |
820 | } | |
fbf94829 | 821 | |
419ab0d6 FW |
822 | prev = register_pid(switch_event->prev_pid, switch_event->prev_comm); |
823 | next = register_pid(switch_event->next_pid, switch_event->next_comm); | |
fbf94829 IM |
824 | |
825 | cpu_last_switched[cpu] = timestamp; | |
826 | ||
827 | add_sched_event_run(prev, timestamp, delta); | |
419ab0d6 | 828 | add_sched_event_sleep(prev, timestamp, switch_event->prev_state); |
fbf94829 IM |
829 | } |
830 | ||
fbf94829 | 831 | |
419ab0d6 FW |
832 | static void |
833 | replay_fork_event(struct trace_fork_event *fork_event, | |
834 | struct event *event, | |
835 | int cpu __used, | |
836 | u64 timestamp __used, | |
837 | struct thread *thread __used) | |
838 | { | |
839 | if (verbose) { | |
840 | printf("sched_fork event %p\n", event); | |
841 | printf("... parent: %s/%d\n", fork_event->parent_comm, fork_event->parent_pid); | |
842 | printf("... child: %s/%d\n", fork_event->child_comm, fork_event->child_pid); | |
843 | } | |
844 | register_pid(fork_event->parent_pid, fork_event->parent_comm); | |
845 | register_pid(fork_event->child_pid, fork_event->child_comm); | |
846 | } | |
fbf94829 | 847 | |
419ab0d6 | 848 | static struct trace_sched_handler replay_ops = { |
ea92ed5a IM |
849 | .wakeup_event = replay_wakeup_event, |
850 | .switch_event = replay_switch_event, | |
851 | .fork_event = replay_fork_event, | |
fbf94829 IM |
852 | }; |
853 | ||
b1ffe8f3 IM |
854 | struct sort_dimension { |
855 | const char *name; | |
b5fae128 | 856 | sort_fn_t cmp; |
b1ffe8f3 IM |
857 | struct list_head list; |
858 | }; | |
859 | ||
860 | static LIST_HEAD(cmp_pid); | |
861 | ||
daa1d7a5 | 862 | static int |
39aeb52f | 863 | thread_lat_cmp(struct list_head *list, struct work_atoms *l, struct work_atoms *r) |
daa1d7a5 FW |
864 | { |
865 | struct sort_dimension *sort; | |
866 | int ret = 0; | |
867 | ||
b5fae128 IM |
868 | BUG_ON(list_empty(list)); |
869 | ||
daa1d7a5 FW |
870 | list_for_each_entry(sort, list, list) { |
871 | ret = sort->cmp(l, r); | |
872 | if (ret) | |
873 | return ret; | |
874 | } | |
875 | ||
876 | return ret; | |
877 | } | |
878 | ||
39aeb52f | 879 | static struct work_atoms * |
b5fae128 IM |
880 | thread_atoms_search(struct rb_root *root, struct thread *thread, |
881 | struct list_head *sort_list) | |
882 | { | |
883 | struct rb_node *node = root->rb_node; | |
39aeb52f | 884 | struct work_atoms key = { .thread = thread }; |
b5fae128 IM |
885 | |
886 | while (node) { | |
39aeb52f | 887 | struct work_atoms *atoms; |
b5fae128 IM |
888 | int cmp; |
889 | ||
39aeb52f | 890 | atoms = container_of(node, struct work_atoms, node); |
b5fae128 IM |
891 | |
892 | cmp = thread_lat_cmp(sort_list, &key, atoms); | |
893 | if (cmp > 0) | |
894 | node = node->rb_left; | |
895 | else if (cmp < 0) | |
896 | node = node->rb_right; | |
897 | else { | |
898 | BUG_ON(thread != atoms->thread); | |
899 | return atoms; | |
900 | } | |
901 | } | |
902 | return NULL; | |
903 | } | |
904 | ||
cdce9d73 | 905 | static void |
39aeb52f | 906 | __thread_latency_insert(struct rb_root *root, struct work_atoms *data, |
daa1d7a5 | 907 | struct list_head *sort_list) |
cdce9d73 FW |
908 | { |
909 | struct rb_node **new = &(root->rb_node), *parent = NULL; | |
910 | ||
911 | while (*new) { | |
39aeb52f | 912 | struct work_atoms *this; |
daa1d7a5 | 913 | int cmp; |
cdce9d73 | 914 | |
39aeb52f | 915 | this = container_of(*new, struct work_atoms, node); |
cdce9d73 | 916 | parent = *new; |
daa1d7a5 FW |
917 | |
918 | cmp = thread_lat_cmp(sort_list, data, this); | |
919 | ||
920 | if (cmp > 0) | |
cdce9d73 | 921 | new = &((*new)->rb_left); |
cdce9d73 | 922 | else |
daa1d7a5 | 923 | new = &((*new)->rb_right); |
cdce9d73 FW |
924 | } |
925 | ||
926 | rb_link_node(&data->node, parent, new); | |
927 | rb_insert_color(&data->node, root); | |
928 | } | |
929 | ||
b1ffe8f3 | 930 | static void thread_atoms_insert(struct thread *thread) |
cdce9d73 | 931 | { |
36479484 | 932 | struct work_atoms *atoms = zalloc(sizeof(*atoms)); |
17562205 | 933 | if (!atoms) |
cdce9d73 FW |
934 | die("No memory"); |
935 | ||
17562205 | 936 | atoms->thread = thread; |
39aeb52f | 937 | INIT_LIST_HEAD(&atoms->work_list); |
b1ffe8f3 | 938 | __thread_latency_insert(&atom_root, atoms, &cmp_pid); |
cdce9d73 FW |
939 | } |
940 | ||
941 | static void | |
942 | latency_fork_event(struct trace_fork_event *fork_event __used, | |
943 | struct event *event __used, | |
944 | int cpu __used, | |
945 | u64 timestamp __used, | |
946 | struct thread *thread __used) | |
947 | { | |
948 | /* should insert the newcomer */ | |
949 | } | |
950 | ||
ea92ed5a | 951 | __used |
cdce9d73 FW |
952 | static char sched_out_state(struct trace_switch_event *switch_event) |
953 | { | |
954 | const char *str = TASK_STATE_TO_CHAR_STR; | |
955 | ||
956 | return str[switch_event->prev_state]; | |
957 | } | |
958 | ||
959 | static void | |
39aeb52f | 960 | add_sched_out_event(struct work_atoms *atoms, |
961 | char run_state, | |
962 | u64 timestamp) | |
cdce9d73 | 963 | { |
36479484 | 964 | struct work_atom *atom = zalloc(sizeof(*atom)); |
b1ffe8f3 | 965 | if (!atom) |
cdce9d73 FW |
966 | die("Non memory"); |
967 | ||
aa1ab9d2 FW |
968 | atom->sched_out_time = timestamp; |
969 | ||
39aeb52f | 970 | if (run_state == 'R') { |
b1ffe8f3 | 971 | atom->state = THREAD_WAIT_CPU; |
aa1ab9d2 | 972 | atom->wake_up_time = atom->sched_out_time; |
c6ced611 FW |
973 | } |
974 | ||
39aeb52f | 975 | list_add_tail(&atom->list, &atoms->work_list); |
cdce9d73 FW |
976 | } |
977 | ||
978 | static void | |
39aeb52f | 979 | add_runtime_event(struct work_atoms *atoms, u64 delta, u64 timestamp __used) |
980 | { | |
981 | struct work_atom *atom; | |
982 | ||
983 | BUG_ON(list_empty(&atoms->work_list)); | |
984 | ||
985 | atom = list_entry(atoms->work_list.prev, struct work_atom, list); | |
986 | ||
987 | atom->runtime += delta; | |
988 | atoms->total_runtime += delta; | |
989 | } | |
990 | ||
991 | static void | |
992 | add_sched_in_event(struct work_atoms *atoms, u64 timestamp) | |
cdce9d73 | 993 | { |
b1ffe8f3 | 994 | struct work_atom *atom; |
66685678 | 995 | u64 delta; |
cdce9d73 | 996 | |
39aeb52f | 997 | if (list_empty(&atoms->work_list)) |
cdce9d73 FW |
998 | return; |
999 | ||
39aeb52f | 1000 | atom = list_entry(atoms->work_list.prev, struct work_atom, list); |
cdce9d73 | 1001 | |
b1ffe8f3 | 1002 | if (atom->state != THREAD_WAIT_CPU) |
cdce9d73 FW |
1003 | return; |
1004 | ||
b1ffe8f3 IM |
1005 | if (timestamp < atom->wake_up_time) { |
1006 | atom->state = THREAD_IGNORE; | |
cdce9d73 FW |
1007 | return; |
1008 | } | |
1009 | ||
b1ffe8f3 IM |
1010 | atom->state = THREAD_SCHED_IN; |
1011 | atom->sched_in_time = timestamp; | |
66685678 | 1012 | |
b1ffe8f3 | 1013 | delta = atom->sched_in_time - atom->wake_up_time; |
66685678 | 1014 | atoms->total_lat += delta; |
3786310a | 1015 | if (delta > atoms->max_lat) { |
66685678 | 1016 | atoms->max_lat = delta; |
3786310a FW |
1017 | atoms->max_lat_at = timestamp; |
1018 | } | |
66685678 | 1019 | atoms->nb_atoms++; |
cdce9d73 FW |
1020 | } |
1021 | ||
cdce9d73 FW |
1022 | static void |
1023 | latency_switch_event(struct trace_switch_event *switch_event, | |
b3165f41 | 1024 | struct perf_session *session, |
cdce9d73 | 1025 | struct event *event __used, |
ea92ed5a | 1026 | int cpu, |
cdce9d73 FW |
1027 | u64 timestamp, |
1028 | struct thread *thread __used) | |
1029 | { | |
39aeb52f | 1030 | struct work_atoms *out_events, *in_events; |
cdce9d73 | 1031 | struct thread *sched_out, *sched_in; |
ea92ed5a IM |
1032 | u64 timestamp0; |
1033 | s64 delta; | |
1034 | ||
39aeb52f | 1035 | BUG_ON(cpu >= MAX_CPUS || cpu < 0); |
ea92ed5a IM |
1036 | |
1037 | timestamp0 = cpu_last_switched[cpu]; | |
1038 | cpu_last_switched[cpu] = timestamp; | |
1039 | if (timestamp0) | |
1040 | delta = timestamp - timestamp0; | |
1041 | else | |
1042 | delta = 0; | |
1043 | ||
1044 | if (delta < 0) | |
9486aa38 | 1045 | die("hm, delta: %" PRIu64 " < 0 ?\n", delta); |
ea92ed5a | 1046 | |
cdce9d73 | 1047 | |
b3165f41 ACM |
1048 | sched_out = perf_session__findnew(session, switch_event->prev_pid); |
1049 | sched_in = perf_session__findnew(session, switch_event->next_pid); | |
cdce9d73 | 1050 | |
39aeb52f | 1051 | out_events = thread_atoms_search(&atom_root, sched_out, &cmp_pid); |
1052 | if (!out_events) { | |
1053 | thread_atoms_insert(sched_out); | |
1054 | out_events = thread_atoms_search(&atom_root, sched_out, &cmp_pid); | |
1055 | if (!out_events) | |
1056 | die("out-event: Internal tree error"); | |
1057 | } | |
1058 | add_sched_out_event(out_events, sched_out_state(switch_event), timestamp); | |
1059 | ||
1060 | in_events = thread_atoms_search(&atom_root, sched_in, &cmp_pid); | |
1061 | if (!in_events) { | |
b1ffe8f3 | 1062 | thread_atoms_insert(sched_in); |
39aeb52f | 1063 | in_events = thread_atoms_search(&atom_root, sched_in, &cmp_pid); |
1064 | if (!in_events) | |
1065 | die("in-event: Internal tree error"); | |
1066 | /* | |
1067 | * Take came in we have not heard about yet, | |
1068 | * add in an initial atom in runnable state: | |
1069 | */ | |
1070 | add_sched_out_event(in_events, 'R', timestamp); | |
cdce9d73 | 1071 | } |
39aeb52f | 1072 | add_sched_in_event(in_events, timestamp); |
1073 | } | |
cdce9d73 | 1074 | |
39aeb52f | 1075 | static void |
1076 | latency_runtime_event(struct trace_runtime_event *runtime_event, | |
b3165f41 | 1077 | struct perf_session *session, |
39aeb52f | 1078 | struct event *event __used, |
1079 | int cpu, | |
1080 | u64 timestamp, | |
1081 | struct thread *this_thread __used) | |
1082 | { | |
b3165f41 | 1083 | struct thread *thread = perf_session__findnew(session, runtime_event->pid); |
d5b889f2 | 1084 | struct work_atoms *atoms = thread_atoms_search(&atom_root, thread, &cmp_pid); |
39aeb52f | 1085 | |
1086 | BUG_ON(cpu >= MAX_CPUS || cpu < 0); | |
39aeb52f | 1087 | if (!atoms) { |
1088 | thread_atoms_insert(thread); | |
1089 | atoms = thread_atoms_search(&atom_root, thread, &cmp_pid); | |
1090 | if (!atoms) | |
1091 | die("in-event: Internal tree error"); | |
1092 | add_sched_out_event(atoms, 'R', timestamp); | |
cdce9d73 FW |
1093 | } |
1094 | ||
39aeb52f | 1095 | add_runtime_event(atoms, runtime_event->runtime, timestamp); |
cdce9d73 FW |
1096 | } |
1097 | ||
1098 | static void | |
1099 | latency_wakeup_event(struct trace_wakeup_event *wakeup_event, | |
b3165f41 | 1100 | struct perf_session *session, |
39aeb52f | 1101 | struct event *__event __used, |
cdce9d73 FW |
1102 | int cpu __used, |
1103 | u64 timestamp, | |
1104 | struct thread *thread __used) | |
1105 | { | |
39aeb52f | 1106 | struct work_atoms *atoms; |
b1ffe8f3 | 1107 | struct work_atom *atom; |
cdce9d73 FW |
1108 | struct thread *wakee; |
1109 | ||
1110 | /* Note for later, it may be interesting to observe the failing cases */ | |
1111 | if (!wakeup_event->success) | |
1112 | return; | |
1113 | ||
b3165f41 | 1114 | wakee = perf_session__findnew(session, wakeup_event->pid); |
b5fae128 | 1115 | atoms = thread_atoms_search(&atom_root, wakee, &cmp_pid); |
17562205 | 1116 | if (!atoms) { |
b1ffe8f3 | 1117 | thread_atoms_insert(wakee); |
39aeb52f | 1118 | atoms = thread_atoms_search(&atom_root, wakee, &cmp_pid); |
1119 | if (!atoms) | |
1120 | die("wakeup-event: Internal tree error"); | |
1121 | add_sched_out_event(atoms, 'S', timestamp); | |
cdce9d73 FW |
1122 | } |
1123 | ||
39aeb52f | 1124 | BUG_ON(list_empty(&atoms->work_list)); |
cdce9d73 | 1125 | |
39aeb52f | 1126 | atom = list_entry(atoms->work_list.prev, struct work_atom, list); |
cdce9d73 | 1127 | |
55ffb7a6 MG |
1128 | /* |
1129 | * You WILL be missing events if you've recorded only | |
1130 | * one CPU, or are only looking at only one, so don't | |
1131 | * make useless noise. | |
1132 | */ | |
1133 | if (profile_cpu == -1 && atom->state != THREAD_SLEEPING) | |
dc02bf71 | 1134 | nr_state_machine_bugs++; |
cdce9d73 | 1135 | |
ea57c4f5 IM |
1136 | nr_timestamps++; |
1137 | if (atom->sched_out_time > timestamp) { | |
dc02bf71 | 1138 | nr_unordered_timestamps++; |
aa1ab9d2 | 1139 | return; |
ea57c4f5 | 1140 | } |
aa1ab9d2 | 1141 | |
b1ffe8f3 IM |
1142 | atom->state = THREAD_WAIT_CPU; |
1143 | atom->wake_up_time = timestamp; | |
cdce9d73 FW |
1144 | } |
1145 | ||
55ffb7a6 MG |
1146 | static void |
1147 | latency_migrate_task_event(struct trace_migrate_task_event *migrate_task_event, | |
b3165f41 | 1148 | struct perf_session *session, |
55ffb7a6 MG |
1149 | struct event *__event __used, |
1150 | int cpu __used, | |
1151 | u64 timestamp, | |
1152 | struct thread *thread __used) | |
1153 | { | |
1154 | struct work_atoms *atoms; | |
1155 | struct work_atom *atom; | |
1156 | struct thread *migrant; | |
1157 | ||
1158 | /* | |
1159 | * Only need to worry about migration when profiling one CPU. | |
1160 | */ | |
1161 | if (profile_cpu == -1) | |
1162 | return; | |
1163 | ||
b3165f41 | 1164 | migrant = perf_session__findnew(session, migrate_task_event->pid); |
55ffb7a6 MG |
1165 | atoms = thread_atoms_search(&atom_root, migrant, &cmp_pid); |
1166 | if (!atoms) { | |
1167 | thread_atoms_insert(migrant); | |
1168 | register_pid(migrant->pid, migrant->comm); | |
1169 | atoms = thread_atoms_search(&atom_root, migrant, &cmp_pid); | |
1170 | if (!atoms) | |
1171 | die("migration-event: Internal tree error"); | |
1172 | add_sched_out_event(atoms, 'R', timestamp); | |
1173 | } | |
1174 | ||
1175 | BUG_ON(list_empty(&atoms->work_list)); | |
1176 | ||
1177 | atom = list_entry(atoms->work_list.prev, struct work_atom, list); | |
1178 | atom->sched_in_time = atom->sched_out_time = atom->wake_up_time = timestamp; | |
1179 | ||
1180 | nr_timestamps++; | |
1181 | ||
1182 | if (atom->sched_out_time > timestamp) | |
1183 | nr_unordered_timestamps++; | |
1184 | } | |
1185 | ||
cdce9d73 | 1186 | static struct trace_sched_handler lat_ops = { |
ea92ed5a IM |
1187 | .wakeup_event = latency_wakeup_event, |
1188 | .switch_event = latency_switch_event, | |
39aeb52f | 1189 | .runtime_event = latency_runtime_event, |
ea92ed5a | 1190 | .fork_event = latency_fork_event, |
55ffb7a6 | 1191 | .migrate_task_event = latency_migrate_task_event, |
cdce9d73 FW |
1192 | }; |
1193 | ||
39aeb52f | 1194 | static void output_lat_thread(struct work_atoms *work_list) |
cdce9d73 | 1195 | { |
cdce9d73 FW |
1196 | int i; |
1197 | int ret; | |
66685678 | 1198 | u64 avg; |
cdce9d73 | 1199 | |
39aeb52f | 1200 | if (!work_list->nb_atoms) |
cdce9d73 | 1201 | return; |
ea57c4f5 IM |
1202 | /* |
1203 | * Ignore idle threads: | |
1204 | */ | |
80ed0987 | 1205 | if (!strcmp(work_list->thread->comm, "swapper")) |
ea57c4f5 | 1206 | return; |
cdce9d73 | 1207 | |
39aeb52f | 1208 | all_runtime += work_list->total_runtime; |
1209 | all_count += work_list->nb_atoms; | |
66685678 | 1210 | |
80ed0987 | 1211 | ret = printf(" %s:%d ", work_list->thread->comm, work_list->thread->pid); |
cdce9d73 | 1212 | |
08f69e6c | 1213 | for (i = 0; i < 24 - ret; i++) |
cdce9d73 FW |
1214 | printf(" "); |
1215 | ||
39aeb52f | 1216 | avg = work_list->total_lat / work_list->nb_atoms; |
cdce9d73 | 1217 | |
9486aa38 | 1218 | printf("|%11.3f ms |%9" PRIu64 " | avg:%9.3f ms | max:%9.3f ms | max at: %9.6f s\n", |
39aeb52f | 1219 | (double)work_list->total_runtime / 1e6, |
1220 | work_list->nb_atoms, (double)avg / 1e6, | |
3786310a FW |
1221 | (double)work_list->max_lat / 1e6, |
1222 | (double)work_list->max_lat_at / 1e9); | |
cdce9d73 FW |
1223 | } |
1224 | ||
39aeb52f | 1225 | static int pid_cmp(struct work_atoms *l, struct work_atoms *r) |
daa1d7a5 | 1226 | { |
daa1d7a5 FW |
1227 | if (l->thread->pid < r->thread->pid) |
1228 | return -1; | |
1229 | if (l->thread->pid > r->thread->pid) | |
1230 | return 1; | |
1231 | ||
1232 | return 0; | |
1233 | } | |
1234 | ||
1235 | static struct sort_dimension pid_sort_dimension = { | |
b5fae128 IM |
1236 | .name = "pid", |
1237 | .cmp = pid_cmp, | |
daa1d7a5 FW |
1238 | }; |
1239 | ||
39aeb52f | 1240 | static int avg_cmp(struct work_atoms *l, struct work_atoms *r) |
daa1d7a5 FW |
1241 | { |
1242 | u64 avgl, avgr; | |
1243 | ||
1244 | if (!l->nb_atoms) | |
1245 | return -1; | |
1246 | ||
1247 | if (!r->nb_atoms) | |
1248 | return 1; | |
1249 | ||
1250 | avgl = l->total_lat / l->nb_atoms; | |
1251 | avgr = r->total_lat / r->nb_atoms; | |
1252 | ||
1253 | if (avgl < avgr) | |
1254 | return -1; | |
1255 | if (avgl > avgr) | |
1256 | return 1; | |
1257 | ||
1258 | return 0; | |
1259 | } | |
1260 | ||
1261 | static struct sort_dimension avg_sort_dimension = { | |
b5fae128 IM |
1262 | .name = "avg", |
1263 | .cmp = avg_cmp, | |
daa1d7a5 FW |
1264 | }; |
1265 | ||
39aeb52f | 1266 | static int max_cmp(struct work_atoms *l, struct work_atoms *r) |
daa1d7a5 FW |
1267 | { |
1268 | if (l->max_lat < r->max_lat) | |
1269 | return -1; | |
1270 | if (l->max_lat > r->max_lat) | |
1271 | return 1; | |
1272 | ||
1273 | return 0; | |
1274 | } | |
1275 | ||
1276 | static struct sort_dimension max_sort_dimension = { | |
b5fae128 IM |
1277 | .name = "max", |
1278 | .cmp = max_cmp, | |
daa1d7a5 FW |
1279 | }; |
1280 | ||
39aeb52f | 1281 | static int switch_cmp(struct work_atoms *l, struct work_atoms *r) |
daa1d7a5 FW |
1282 | { |
1283 | if (l->nb_atoms < r->nb_atoms) | |
1284 | return -1; | |
1285 | if (l->nb_atoms > r->nb_atoms) | |
1286 | return 1; | |
1287 | ||
1288 | return 0; | |
1289 | } | |
1290 | ||
1291 | static struct sort_dimension switch_sort_dimension = { | |
b5fae128 IM |
1292 | .name = "switch", |
1293 | .cmp = switch_cmp, | |
daa1d7a5 FW |
1294 | }; |
1295 | ||
39aeb52f | 1296 | static int runtime_cmp(struct work_atoms *l, struct work_atoms *r) |
daa1d7a5 FW |
1297 | { |
1298 | if (l->total_runtime < r->total_runtime) | |
1299 | return -1; | |
1300 | if (l->total_runtime > r->total_runtime) | |
1301 | return 1; | |
1302 | ||
1303 | return 0; | |
1304 | } | |
1305 | ||
1306 | static struct sort_dimension runtime_sort_dimension = { | |
b5fae128 IM |
1307 | .name = "runtime", |
1308 | .cmp = runtime_cmp, | |
daa1d7a5 FW |
1309 | }; |
1310 | ||
1311 | static struct sort_dimension *available_sorts[] = { | |
1312 | &pid_sort_dimension, | |
1313 | &avg_sort_dimension, | |
1314 | &max_sort_dimension, | |
1315 | &switch_sort_dimension, | |
1316 | &runtime_sort_dimension, | |
1317 | }; | |
1318 | ||
1319 | #define NB_AVAILABLE_SORTS (int)(sizeof(available_sorts) / sizeof(struct sort_dimension *)) | |
1320 | ||
1321 | static LIST_HEAD(sort_list); | |
1322 | ||
cbef79a8 | 1323 | static int sort_dimension__add(const char *tok, struct list_head *list) |
daa1d7a5 FW |
1324 | { |
1325 | int i; | |
1326 | ||
1327 | for (i = 0; i < NB_AVAILABLE_SORTS; i++) { | |
1328 | if (!strcmp(available_sorts[i]->name, tok)) { | |
1329 | list_add_tail(&available_sorts[i]->list, list); | |
1330 | ||
1331 | return 0; | |
1332 | } | |
1333 | } | |
1334 | ||
1335 | return -1; | |
1336 | } | |
1337 | ||
1338 | static void setup_sorting(void); | |
1339 | ||
1340 | static void sort_lat(void) | |
1341 | { | |
1342 | struct rb_node *node; | |
1343 | ||
1344 | for (;;) { | |
39aeb52f | 1345 | struct work_atoms *data; |
b1ffe8f3 | 1346 | node = rb_first(&atom_root); |
daa1d7a5 FW |
1347 | if (!node) |
1348 | break; | |
1349 | ||
b1ffe8f3 | 1350 | rb_erase(node, &atom_root); |
39aeb52f | 1351 | data = rb_entry(node, struct work_atoms, node); |
b1ffe8f3 | 1352 | __thread_latency_insert(&sorted_atom_root, data, &sort_list); |
daa1d7a5 FW |
1353 | } |
1354 | } | |
1355 | ||
419ab0d6 FW |
1356 | static struct trace_sched_handler *trace_handler; |
1357 | ||
fbf94829 | 1358 | static void |
b3165f41 | 1359 | process_sched_wakeup_event(void *data, struct perf_session *session, |
419ab0d6 FW |
1360 | struct event *event, |
1361 | int cpu __used, | |
1362 | u64 timestamp __used, | |
1363 | struct thread *thread __used) | |
1364 | { | |
1365 | struct trace_wakeup_event wakeup_event; | |
1366 | ||
f48f669d | 1367 | FILL_COMMON_FIELDS(wakeup_event, event, data); |
419ab0d6 | 1368 | |
f48f669d XG |
1369 | FILL_ARRAY(wakeup_event, comm, event, data); |
1370 | FILL_FIELD(wakeup_event, pid, event, data); | |
1371 | FILL_FIELD(wakeup_event, prio, event, data); | |
1372 | FILL_FIELD(wakeup_event, success, event, data); | |
1373 | FILL_FIELD(wakeup_event, cpu, event, data); | |
419ab0d6 | 1374 | |
0ec04e16 | 1375 | if (trace_handler->wakeup_event) |
b3165f41 ACM |
1376 | trace_handler->wakeup_event(&wakeup_event, session, event, |
1377 | cpu, timestamp, thread); | |
419ab0d6 FW |
1378 | } |
1379 | ||
c8a37751 IM |
1380 | /* |
1381 | * Track the current task - that way we can know whether there's any | |
1382 | * weird events, such as a task being switched away that is not current. | |
1383 | */ | |
40749d0f | 1384 | static int max_cpu; |
0ec04e16 | 1385 | |
c8a37751 IM |
1386 | static u32 curr_pid[MAX_CPUS] = { [0 ... MAX_CPUS-1] = -1 }; |
1387 | ||
0ec04e16 IM |
1388 | static struct thread *curr_thread[MAX_CPUS]; |
1389 | ||
1390 | static char next_shortname1 = 'A'; | |
1391 | static char next_shortname2 = '0'; | |
1392 | ||
1393 | static void | |
1394 | map_switch_event(struct trace_switch_event *switch_event, | |
b3165f41 | 1395 | struct perf_session *session, |
0ec04e16 IM |
1396 | struct event *event __used, |
1397 | int this_cpu, | |
1398 | u64 timestamp, | |
1399 | struct thread *thread __used) | |
1400 | { | |
fb7d0b3c | 1401 | struct thread *sched_out __used, *sched_in; |
0ec04e16 IM |
1402 | int new_shortname; |
1403 | u64 timestamp0; | |
1404 | s64 delta; | |
1405 | int cpu; | |
1406 | ||
1407 | BUG_ON(this_cpu >= MAX_CPUS || this_cpu < 0); | |
1408 | ||
1409 | if (this_cpu > max_cpu) | |
1410 | max_cpu = this_cpu; | |
1411 | ||
1412 | timestamp0 = cpu_last_switched[this_cpu]; | |
1413 | cpu_last_switched[this_cpu] = timestamp; | |
1414 | if (timestamp0) | |
1415 | delta = timestamp - timestamp0; | |
1416 | else | |
1417 | delta = 0; | |
1418 | ||
1419 | if (delta < 0) | |
9486aa38 | 1420 | die("hm, delta: %" PRIu64 " < 0 ?\n", delta); |
0ec04e16 IM |
1421 | |
1422 | ||
b3165f41 ACM |
1423 | sched_out = perf_session__findnew(session, switch_event->prev_pid); |
1424 | sched_in = perf_session__findnew(session, switch_event->next_pid); | |
0ec04e16 IM |
1425 | |
1426 | curr_thread[this_cpu] = sched_in; | |
1427 | ||
1428 | printf(" "); | |
1429 | ||
1430 | new_shortname = 0; | |
1431 | if (!sched_in->shortname[0]) { | |
1432 | sched_in->shortname[0] = next_shortname1; | |
1433 | sched_in->shortname[1] = next_shortname2; | |
1434 | ||
1435 | if (next_shortname1 < 'Z') { | |
1436 | next_shortname1++; | |
1437 | } else { | |
1438 | next_shortname1='A'; | |
1439 | if (next_shortname2 < '9') { | |
1440 | next_shortname2++; | |
1441 | } else { | |
1442 | next_shortname2='0'; | |
1443 | } | |
1444 | } | |
1445 | new_shortname = 1; | |
1446 | } | |
1447 | ||
1448 | for (cpu = 0; cpu <= max_cpu; cpu++) { | |
1449 | if (cpu != this_cpu) | |
1450 | printf(" "); | |
1451 | else | |
1452 | printf("*"); | |
1453 | ||
1454 | if (curr_thread[cpu]) { | |
1455 | if (curr_thread[cpu]->pid) | |
1456 | printf("%2s ", curr_thread[cpu]->shortname); | |
1457 | else | |
1458 | printf(". "); | |
1459 | } else | |
1460 | printf(" "); | |
1461 | } | |
1462 | ||
1463 | printf(" %12.6f secs ", (double)timestamp/1e9); | |
1464 | if (new_shortname) { | |
1465 | printf("%s => %s:%d\n", | |
1466 | sched_in->shortname, sched_in->comm, sched_in->pid); | |
1467 | } else { | |
1468 | printf("\n"); | |
1469 | } | |
1470 | } | |
1471 | ||
1472 | ||
419ab0d6 | 1473 | static void |
b3165f41 | 1474 | process_sched_switch_event(void *data, struct perf_session *session, |
419ab0d6 | 1475 | struct event *event, |
0ec04e16 | 1476 | int this_cpu, |
419ab0d6 FW |
1477 | u64 timestamp __used, |
1478 | struct thread *thread __used) | |
1479 | { | |
1480 | struct trace_switch_event switch_event; | |
1481 | ||
f48f669d | 1482 | FILL_COMMON_FIELDS(switch_event, event, data); |
419ab0d6 | 1483 | |
f48f669d XG |
1484 | FILL_ARRAY(switch_event, prev_comm, event, data); |
1485 | FILL_FIELD(switch_event, prev_pid, event, data); | |
1486 | FILL_FIELD(switch_event, prev_prio, event, data); | |
1487 | FILL_FIELD(switch_event, prev_state, event, data); | |
1488 | FILL_ARRAY(switch_event, next_comm, event, data); | |
1489 | FILL_FIELD(switch_event, next_pid, event, data); | |
1490 | FILL_FIELD(switch_event, next_prio, event, data); | |
419ab0d6 | 1491 | |
0ec04e16 | 1492 | if (curr_pid[this_cpu] != (u32)-1) { |
c8a37751 IM |
1493 | /* |
1494 | * Are we trying to switch away a PID that is | |
1495 | * not current? | |
1496 | */ | |
0ec04e16 | 1497 | if (curr_pid[this_cpu] != switch_event.prev_pid) |
c8a37751 IM |
1498 | nr_context_switch_bugs++; |
1499 | } | |
0ec04e16 | 1500 | if (trace_handler->switch_event) |
b3165f41 ACM |
1501 | trace_handler->switch_event(&switch_event, session, event, |
1502 | this_cpu, timestamp, thread); | |
c8a37751 | 1503 | |
0ec04e16 | 1504 | curr_pid[this_cpu] = switch_event.next_pid; |
419ab0d6 FW |
1505 | } |
1506 | ||
39aeb52f | 1507 | static void |
b3165f41 | 1508 | process_sched_runtime_event(void *data, struct perf_session *session, |
39aeb52f | 1509 | struct event *event, |
1510 | int cpu __used, | |
1511 | u64 timestamp __used, | |
1512 | struct thread *thread __used) | |
1513 | { | |
1514 | struct trace_runtime_event runtime_event; | |
1515 | ||
f48f669d XG |
1516 | FILL_ARRAY(runtime_event, comm, event, data); |
1517 | FILL_FIELD(runtime_event, pid, event, data); | |
1518 | FILL_FIELD(runtime_event, runtime, event, data); | |
1519 | FILL_FIELD(runtime_event, vruntime, event, data); | |
39aeb52f | 1520 | |
0ec04e16 | 1521 | if (trace_handler->runtime_event) |
b3165f41 | 1522 | trace_handler->runtime_event(&runtime_event, session, event, cpu, timestamp, thread); |
39aeb52f | 1523 | } |
1524 | ||
419ab0d6 | 1525 | static void |
f48f669d | 1526 | process_sched_fork_event(void *data, |
419ab0d6 FW |
1527 | struct event *event, |
1528 | int cpu __used, | |
1529 | u64 timestamp __used, | |
1530 | struct thread *thread __used) | |
fbf94829 | 1531 | { |
46538818 FW |
1532 | struct trace_fork_event fork_event; |
1533 | ||
f48f669d | 1534 | FILL_COMMON_FIELDS(fork_event, event, data); |
46538818 | 1535 | |
f48f669d XG |
1536 | FILL_ARRAY(fork_event, parent_comm, event, data); |
1537 | FILL_FIELD(fork_event, parent_pid, event, data); | |
1538 | FILL_ARRAY(fork_event, child_comm, event, data); | |
1539 | FILL_FIELD(fork_event, child_pid, event, data); | |
46538818 | 1540 | |
0ec04e16 | 1541 | if (trace_handler->fork_event) |
b3165f41 ACM |
1542 | trace_handler->fork_event(&fork_event, event, |
1543 | cpu, timestamp, thread); | |
fbf94829 IM |
1544 | } |
1545 | ||
419ab0d6 FW |
1546 | static void |
1547 | process_sched_exit_event(struct event *event, | |
1548 | int cpu __used, | |
1549 | u64 timestamp __used, | |
1550 | struct thread *thread __used) | |
fbf94829 | 1551 | { |
ad236fd2 IM |
1552 | if (verbose) |
1553 | printf("sched_exit event %p\n", event); | |
ec156764 IM |
1554 | } |
1555 | ||
55ffb7a6 | 1556 | static void |
b3165f41 | 1557 | process_sched_migrate_task_event(void *data, struct perf_session *session, |
55ffb7a6 MG |
1558 | struct event *event, |
1559 | int cpu __used, | |
1560 | u64 timestamp __used, | |
1561 | struct thread *thread __used) | |
1562 | { | |
1563 | struct trace_migrate_task_event migrate_task_event; | |
1564 | ||
f48f669d | 1565 | FILL_COMMON_FIELDS(migrate_task_event, event, data); |
55ffb7a6 | 1566 | |
f48f669d XG |
1567 | FILL_ARRAY(migrate_task_event, comm, event, data); |
1568 | FILL_FIELD(migrate_task_event, pid, event, data); | |
1569 | FILL_FIELD(migrate_task_event, prio, event, data); | |
1570 | FILL_FIELD(migrate_task_event, cpu, event, data); | |
55ffb7a6 MG |
1571 | |
1572 | if (trace_handler->migrate_task_event) | |
b3165f41 ACM |
1573 | trace_handler->migrate_task_event(&migrate_task_event, session, |
1574 | event, cpu, timestamp, thread); | |
55ffb7a6 MG |
1575 | } |
1576 | ||
8115d60c ACM |
1577 | static void process_raw_event(union perf_event *raw_event __used, |
1578 | struct perf_session *session, void *data, int cpu, | |
1579 | u64 timestamp, struct thread *thread) | |
ec156764 | 1580 | { |
ec156764 IM |
1581 | struct event *event; |
1582 | int type; | |
1583 | ||
d8bd9e0a | 1584 | |
f48f669d | 1585 | type = trace_parse_common_type(data); |
ec156764 IM |
1586 | event = trace_find_event(type); |
1587 | ||
ec156764 | 1588 | if (!strcmp(event->name, "sched_switch")) |
b3165f41 | 1589 | process_sched_switch_event(data, session, event, cpu, timestamp, thread); |
39aeb52f | 1590 | if (!strcmp(event->name, "sched_stat_runtime")) |
b3165f41 | 1591 | process_sched_runtime_event(data, session, event, cpu, timestamp, thread); |
ec156764 | 1592 | if (!strcmp(event->name, "sched_wakeup")) |
b3165f41 | 1593 | process_sched_wakeup_event(data, session, event, cpu, timestamp, thread); |
fbf94829 | 1594 | if (!strcmp(event->name, "sched_wakeup_new")) |
b3165f41 | 1595 | process_sched_wakeup_event(data, session, event, cpu, timestamp, thread); |
fbf94829 | 1596 | if (!strcmp(event->name, "sched_process_fork")) |
f48f669d | 1597 | process_sched_fork_event(data, event, cpu, timestamp, thread); |
fbf94829 IM |
1598 | if (!strcmp(event->name, "sched_process_exit")) |
1599 | process_sched_exit_event(event, cpu, timestamp, thread); | |
55ffb7a6 | 1600 | if (!strcmp(event->name, "sched_migrate_task")) |
b3165f41 | 1601 | process_sched_migrate_task_event(data, session, event, cpu, timestamp, thread); |
ec156764 IM |
1602 | } |
1603 | ||
8115d60c ACM |
1604 | static int process_sample_event(union perf_event *event, |
1605 | struct perf_sample *sample, | |
9e69c210 | 1606 | struct perf_evsel *evsel __used, |
640c03ce | 1607 | struct perf_session *session) |
0a02ad93 | 1608 | { |
0a02ad93 | 1609 | struct thread *thread; |
a80deb62 | 1610 | |
c019879b | 1611 | if (!(session->sample_type & PERF_SAMPLE_RAW)) |
a80deb62 | 1612 | return 0; |
0a02ad93 | 1613 | |
640c03ce | 1614 | thread = perf_session__findnew(session, sample->pid); |
0a02ad93 | 1615 | if (thread == NULL) { |
6beba7ad ACM |
1616 | pr_debug("problem processing %d event, skipping it.\n", |
1617 | event->header.type); | |
0a02ad93 IM |
1618 | return -1; |
1619 | } | |
1620 | ||
f39cdf25 JL |
1621 | dump_printf(" ... thread: %s:%d\n", thread->comm, thread->pid); |
1622 | ||
640c03ce | 1623 | if (profile_cpu != -1 && profile_cpu != (int)sample->cpu) |
55ffb7a6 MG |
1624 | return 0; |
1625 | ||
640c03ce ACM |
1626 | process_raw_event(event, session, sample->raw_data, sample->cpu, |
1627 | sample->time, thread); | |
0a02ad93 IM |
1628 | |
1629 | return 0; | |
1630 | } | |
1631 | ||
301a0b02 | 1632 | static struct perf_event_ops event_ops = { |
a64eae70 | 1633 | .sample = process_sample_event, |
8115d60c ACM |
1634 | .comm = perf_event__process_comm, |
1635 | .lost = perf_event__process_lost, | |
1636 | .fork = perf_event__process_task, | |
a64eae70 | 1637 | .ordered_samples = true, |
016e92fb FW |
1638 | }; |
1639 | ||
4c09bafa | 1640 | static void read_events(bool destroy, struct perf_session **psession) |
0a02ad93 | 1641 | { |
d549c769 | 1642 | int err = -EINVAL; |
21ef97f0 IM |
1643 | struct perf_session *session = perf_session__new(input_name, O_RDONLY, |
1644 | 0, false, &event_ops); | |
94c744b6 | 1645 | if (session == NULL) |
4c09bafa | 1646 | die("No Memory"); |
94c744b6 | 1647 | |
cee75ac7 | 1648 | if (perf_session__has_traces(session, "record -R")) { |
d549c769 | 1649 | err = perf_session__process_events(session, &event_ops); |
4c09bafa JO |
1650 | if (err) |
1651 | die("Failed to process events, error %d", err); | |
1652 | ||
cee75ac7 ACM |
1653 | nr_events = session->hists.stats.nr_events[0]; |
1654 | nr_lost_events = session->hists.stats.total_lost; | |
1655 | nr_lost_chunks = session->hists.stats.nr_events[PERF_RECORD_LOST]; | |
1656 | } | |
d549c769 | 1657 | |
4c09bafa JO |
1658 | if (destroy) |
1659 | perf_session__delete(session); | |
1660 | ||
1661 | if (psession) | |
1662 | *psession = session; | |
0a02ad93 IM |
1663 | } |
1664 | ||
0ec04e16 IM |
1665 | static void print_bad_events(void) |
1666 | { | |
1667 | if (nr_unordered_timestamps && nr_timestamps) { | |
1668 | printf(" INFO: %.3f%% unordered timestamps (%ld out of %ld)\n", | |
1669 | (double)nr_unordered_timestamps/(double)nr_timestamps*100.0, | |
1670 | nr_unordered_timestamps, nr_timestamps); | |
1671 | } | |
1672 | if (nr_lost_events && nr_events) { | |
1673 | printf(" INFO: %.3f%% lost events (%ld out of %ld, in %ld chunks)\n", | |
1674 | (double)nr_lost_events/(double)nr_events*100.0, | |
1675 | nr_lost_events, nr_events, nr_lost_chunks); | |
1676 | } | |
1677 | if (nr_state_machine_bugs && nr_timestamps) { | |
1678 | printf(" INFO: %.3f%% state machine bugs (%ld out of %ld)", | |
1679 | (double)nr_state_machine_bugs/(double)nr_timestamps*100.0, | |
1680 | nr_state_machine_bugs, nr_timestamps); | |
1681 | if (nr_lost_events) | |
1682 | printf(" (due to lost events?)"); | |
1683 | printf("\n"); | |
1684 | } | |
1685 | if (nr_context_switch_bugs && nr_timestamps) { | |
1686 | printf(" INFO: %.3f%% context switch bugs (%ld out of %ld)", | |
1687 | (double)nr_context_switch_bugs/(double)nr_timestamps*100.0, | |
1688 | nr_context_switch_bugs, nr_timestamps); | |
1689 | if (nr_lost_events) | |
1690 | printf(" (due to lost events?)"); | |
1691 | printf("\n"); | |
1692 | } | |
1693 | } | |
1694 | ||
1695 | static void __cmd_lat(void) | |
1696 | { | |
1697 | struct rb_node *next; | |
4c09bafa | 1698 | struct perf_session *session; |
0ec04e16 IM |
1699 | |
1700 | setup_pager(); | |
4c09bafa | 1701 | read_events(false, &session); |
0ec04e16 IM |
1702 | sort_lat(); |
1703 | ||
3786310a FW |
1704 | printf("\n ---------------------------------------------------------------------------------------------------------------\n"); |
1705 | printf(" Task | Runtime ms | Switches | Average delay ms | Maximum delay ms | Maximum delay at |\n"); | |
1706 | printf(" ---------------------------------------------------------------------------------------------------------------\n"); | |
0ec04e16 IM |
1707 | |
1708 | next = rb_first(&sorted_atom_root); | |
1709 | ||
1710 | while (next) { | |
1711 | struct work_atoms *work_list; | |
1712 | ||
1713 | work_list = rb_entry(next, struct work_atoms, node); | |
1714 | output_lat_thread(work_list); | |
1715 | next = rb_next(next); | |
1716 | } | |
1717 | ||
1718 | printf(" -----------------------------------------------------------------------------------------\n"); | |
9486aa38 | 1719 | printf(" TOTAL: |%11.3f ms |%9" PRIu64 " |\n", |
0ec04e16 IM |
1720 | (double)all_runtime/1e6, all_count); |
1721 | ||
1722 | printf(" ---------------------------------------------------\n"); | |
1723 | ||
1724 | print_bad_events(); | |
1725 | printf("\n"); | |
1726 | ||
4c09bafa | 1727 | perf_session__delete(session); |
0ec04e16 IM |
1728 | } |
1729 | ||
1730 | static struct trace_sched_handler map_ops = { | |
1731 | .wakeup_event = NULL, | |
1732 | .switch_event = map_switch_event, | |
1733 | .runtime_event = NULL, | |
1734 | .fork_event = NULL, | |
1735 | }; | |
1736 | ||
1737 | static void __cmd_map(void) | |
1738 | { | |
40749d0f IM |
1739 | max_cpu = sysconf(_SC_NPROCESSORS_CONF); |
1740 | ||
0ec04e16 | 1741 | setup_pager(); |
4c09bafa | 1742 | read_events(true, NULL); |
0ec04e16 IM |
1743 | print_bad_events(); |
1744 | } | |
1745 | ||
1746 | static void __cmd_replay(void) | |
1747 | { | |
1748 | unsigned long i; | |
1749 | ||
1750 | calibrate_run_measurement_overhead(); | |
1751 | calibrate_sleep_measurement_overhead(); | |
1752 | ||
1753 | test_calibrations(); | |
1754 | ||
4c09bafa | 1755 | read_events(true, NULL); |
0ec04e16 IM |
1756 | |
1757 | printf("nr_run_events: %ld\n", nr_run_events); | |
1758 | printf("nr_sleep_events: %ld\n", nr_sleep_events); | |
1759 | printf("nr_wakeup_events: %ld\n", nr_wakeup_events); | |
1760 | ||
1761 | if (targetless_wakeups) | |
1762 | printf("target-less wakeups: %ld\n", targetless_wakeups); | |
1763 | if (multitarget_wakeups) | |
1764 | printf("multi-target wakeups: %ld\n", multitarget_wakeups); | |
1765 | if (nr_run_events_optimized) | |
1766 | printf("run atoms optimized: %ld\n", | |
1767 | nr_run_events_optimized); | |
1768 | ||
1769 | print_task_traces(); | |
1770 | add_cross_task_wakeups(); | |
1771 | ||
1772 | create_tasks(); | |
1773 | printf("------------------------------------------------------------\n"); | |
1774 | for (i = 0; i < replay_repeat; i++) | |
1775 | run_one_test(); | |
1776 | } | |
1777 | ||
1778 | ||
46f392c9 | 1779 | static const char * const sched_usage[] = { |
580cabed | 1780 | "perf sched [<options>] {record|latency|map|replay|script}", |
0a02ad93 IM |
1781 | NULL |
1782 | }; | |
1783 | ||
f2858d8a | 1784 | static const struct option sched_options[] = { |
4b77a729 MG |
1785 | OPT_STRING('i', "input", &input_name, "file", |
1786 | "input file name"), | |
c0555642 | 1787 | OPT_INCR('v', "verbose", &verbose, |
f2858d8a | 1788 | "be more verbose (show symbol address, etc)"), |
0a02ad93 IM |
1789 | OPT_BOOLEAN('D', "dump-raw-trace", &dump_trace, |
1790 | "dump raw trace in ASCII"), | |
f2858d8a IM |
1791 | OPT_END() |
1792 | }; | |
1793 | ||
1794 | static const char * const latency_usage[] = { | |
1795 | "perf sched latency [<options>]", | |
1796 | NULL | |
1797 | }; | |
1798 | ||
1799 | static const struct option latency_options[] = { | |
daa1d7a5 FW |
1800 | OPT_STRING('s', "sort", &sort_order, "key[,key2...]", |
1801 | "sort by key(s): runtime, switch, avg, max"), | |
c0555642 | 1802 | OPT_INCR('v', "verbose", &verbose, |
0a02ad93 | 1803 | "be more verbose (show symbol address, etc)"), |
55ffb7a6 MG |
1804 | OPT_INTEGER('C', "CPU", &profile_cpu, |
1805 | "CPU to profile on"), | |
f2858d8a IM |
1806 | OPT_BOOLEAN('D', "dump-raw-trace", &dump_trace, |
1807 | "dump raw trace in ASCII"), | |
1808 | OPT_END() | |
1809 | }; | |
1810 | ||
1811 | static const char * const replay_usage[] = { | |
1812 | "perf sched replay [<options>]", | |
1813 | NULL | |
1814 | }; | |
1815 | ||
1816 | static const struct option replay_options[] = { | |
1967936d ACM |
1817 | OPT_UINTEGER('r', "repeat", &replay_repeat, |
1818 | "repeat the workload replay N times (-1: infinite)"), | |
c0555642 | 1819 | OPT_INCR('v', "verbose", &verbose, |
f2858d8a IM |
1820 | "be more verbose (show symbol address, etc)"), |
1821 | OPT_BOOLEAN('D', "dump-raw-trace", &dump_trace, | |
1822 | "dump raw trace in ASCII"), | |
0a02ad93 IM |
1823 | OPT_END() |
1824 | }; | |
1825 | ||
daa1d7a5 FW |
1826 | static void setup_sorting(void) |
1827 | { | |
1828 | char *tmp, *tok, *str = strdup(sort_order); | |
1829 | ||
1830 | for (tok = strtok_r(str, ", ", &tmp); | |
1831 | tok; tok = strtok_r(NULL, ", ", &tmp)) { | |
1832 | if (sort_dimension__add(tok, &sort_list) < 0) { | |
1833 | error("Unknown --sort key: `%s'", tok); | |
f2858d8a | 1834 | usage_with_options(latency_usage, latency_options); |
daa1d7a5 FW |
1835 | } |
1836 | } | |
1837 | ||
1838 | free(str); | |
1839 | ||
cbef79a8 | 1840 | sort_dimension__add("pid", &cmp_pid); |
daa1d7a5 FW |
1841 | } |
1842 | ||
1fc35b29 IM |
1843 | static const char *record_args[] = { |
1844 | "record", | |
1845 | "-a", | |
1846 | "-R", | |
ea57c4f5 | 1847 | "-f", |
dc02bf71 | 1848 | "-m", "1024", |
1fc35b29 | 1849 | "-c", "1", |
9710118b SE |
1850 | "-e", "sched:sched_switch", |
1851 | "-e", "sched:sched_stat_wait", | |
1852 | "-e", "sched:sched_stat_sleep", | |
1853 | "-e", "sched:sched_stat_iowait", | |
1854 | "-e", "sched:sched_stat_runtime", | |
1855 | "-e", "sched:sched_process_exit", | |
1856 | "-e", "sched:sched_process_fork", | |
1857 | "-e", "sched:sched_wakeup", | |
1858 | "-e", "sched:sched_migrate_task", | |
1fc35b29 IM |
1859 | }; |
1860 | ||
1861 | static int __cmd_record(int argc, const char **argv) | |
1862 | { | |
1863 | unsigned int rec_argc, i, j; | |
1864 | const char **rec_argv; | |
1865 | ||
1866 | rec_argc = ARRAY_SIZE(record_args) + argc - 1; | |
1867 | rec_argv = calloc(rec_argc + 1, sizeof(char *)); | |
1868 | ||
e462dc55 | 1869 | if (rec_argv == NULL) |
ce47dc56 CS |
1870 | return -ENOMEM; |
1871 | ||
1fc35b29 IM |
1872 | for (i = 0; i < ARRAY_SIZE(record_args); i++) |
1873 | rec_argv[i] = strdup(record_args[i]); | |
1874 | ||
1875 | for (j = 1; j < (unsigned int)argc; j++, i++) | |
1876 | rec_argv[i] = argv[j]; | |
1877 | ||
1878 | BUG_ON(i != rec_argc); | |
1879 | ||
1880 | return cmd_record(i, rec_argv, NULL); | |
1881 | } | |
1882 | ||
0a02ad93 IM |
1883 | int cmd_sched(int argc, const char **argv, const char *prefix __used) |
1884 | { | |
f2858d8a IM |
1885 | argc = parse_options(argc, argv, sched_options, sched_usage, |
1886 | PARSE_OPT_STOP_AT_NON_OPTION); | |
1887 | if (!argc) | |
1888 | usage_with_options(sched_usage, sched_options); | |
0a02ad93 | 1889 | |
c0777c5a | 1890 | /* |
133dc4c3 | 1891 | * Aliased to 'perf script' for now: |
c0777c5a | 1892 | */ |
133dc4c3 IM |
1893 | if (!strcmp(argv[0], "script")) |
1894 | return cmd_script(argc, argv, prefix); | |
c0777c5a | 1895 | |
75be6cf4 | 1896 | symbol__init(); |
1fc35b29 IM |
1897 | if (!strncmp(argv[0], "rec", 3)) { |
1898 | return __cmd_record(argc, argv); | |
1899 | } else if (!strncmp(argv[0], "lat", 3)) { | |
cdce9d73 | 1900 | trace_handler = &lat_ops; |
f2858d8a IM |
1901 | if (argc > 1) { |
1902 | argc = parse_options(argc, argv, latency_options, latency_usage, 0); | |
1903 | if (argc) | |
1904 | usage_with_options(latency_usage, latency_options); | |
f2858d8a | 1905 | } |
b5fae128 | 1906 | setup_sorting(); |
46f392c9 | 1907 | __cmd_lat(); |
0ec04e16 IM |
1908 | } else if (!strcmp(argv[0], "map")) { |
1909 | trace_handler = &map_ops; | |
1910 | setup_sorting(); | |
1911 | __cmd_map(); | |
f2858d8a IM |
1912 | } else if (!strncmp(argv[0], "rep", 3)) { |
1913 | trace_handler = &replay_ops; | |
1914 | if (argc) { | |
1915 | argc = parse_options(argc, argv, replay_options, replay_usage, 0); | |
1916 | if (argc) | |
1917 | usage_with_options(replay_usage, replay_options); | |
1918 | } | |
1919 | __cmd_replay(); | |
1920 | } else { | |
1921 | usage_with_options(sched_usage, sched_options); | |
1922 | } | |
1923 | ||
ec156764 | 1924 | return 0; |
0a02ad93 | 1925 | } |