Commit | Line | Data |
---|---|---|
0a02ad93 | 1 | #include "builtin.h" |
b1ffe8f3 | 2 | #include "perf.h" |
0a02ad93 IM |
3 | |
4 | #include "util/util.h" | |
ee29be62 | 5 | #include "util/evlist.h" |
0a02ad93 | 6 | #include "util/cache.h" |
e3f42609 | 7 | #include "util/evsel.h" |
0a02ad93 IM |
8 | #include "util/symbol.h" |
9 | #include "util/thread.h" | |
10 | #include "util/header.h" | |
94c744b6 | 11 | #include "util/session.h" |
45694aa7 | 12 | #include "util/tool.h" |
57480d2c | 13 | #include "util/cloexec.h" |
a151a37a | 14 | #include "util/thread_map.h" |
8cd91195 | 15 | #include "util/color.h" |
0a02ad93 | 16 | |
4b6ab94e | 17 | #include <subcmd/parse-options.h> |
b1ffe8f3 | 18 | #include "util/trace-event.h" |
0a02ad93 | 19 | |
0a02ad93 IM |
20 | #include "util/debug.h" |
21 | ||
b1ffe8f3 | 22 | #include <sys/prctl.h> |
7b78f136 | 23 | #include <sys/resource.h> |
0a02ad93 | 24 | |
b1ffe8f3 IM |
25 | #include <semaphore.h> |
26 | #include <pthread.h> | |
27 | #include <math.h> | |
cb06ac25 | 28 | #include <api/fs/fs.h> |
4fc76e49 | 29 | #include <linux/time64.h> |
419ab0d6 | 30 | |
b1ffe8f3 IM |
31 | #define PR_SET_NAME 15 /* Set process name */ |
32 | #define MAX_CPUS 4096 | |
b1ffe8f3 IM |
33 | #define COMM_LEN 20 |
34 | #define SYM_LEN 129 | |
a35e27d0 | 35 | #define MAX_PID 1024000 |
ec156764 | 36 | |
39aeb52f | 37 | struct sched_atom; |
ec156764 | 38 | |
b1ffe8f3 IM |
39 | struct task_desc { |
40 | unsigned long nr; | |
41 | unsigned long pid; | |
42 | char comm[COMM_LEN]; | |
ec156764 | 43 | |
b1ffe8f3 IM |
44 | unsigned long nr_events; |
45 | unsigned long curr_event; | |
39aeb52f | 46 | struct sched_atom **atoms; |
b1ffe8f3 IM |
47 | |
48 | pthread_t thread; | |
49 | sem_t sleep_sem; | |
ec156764 | 50 | |
b1ffe8f3 IM |
51 | sem_t ready_for_work; |
52 | sem_t work_done_sem; | |
53 | ||
54 | u64 cpu_usage; | |
55 | }; | |
56 | ||
57 | enum sched_event_type { | |
58 | SCHED_EVENT_RUN, | |
59 | SCHED_EVENT_SLEEP, | |
60 | SCHED_EVENT_WAKEUP, | |
55ffb7a6 | 61 | SCHED_EVENT_MIGRATION, |
b1ffe8f3 IM |
62 | }; |
63 | ||
39aeb52f | 64 | struct sched_atom { |
b1ffe8f3 | 65 | enum sched_event_type type; |
eed05fe7 | 66 | int specific_wait; |
b1ffe8f3 IM |
67 | u64 timestamp; |
68 | u64 duration; | |
69 | unsigned long nr; | |
b1ffe8f3 IM |
70 | sem_t *wait_sem; |
71 | struct task_desc *wakee; | |
72 | }; | |
73 | ||
e936e8e4 | 74 | #define TASK_STATE_TO_CHAR_STR "RSDTtZXxKWP" |
b1ffe8f3 IM |
75 | |
76 | enum thread_state { | |
77 | THREAD_SLEEPING = 0, | |
78 | THREAD_WAIT_CPU, | |
79 | THREAD_SCHED_IN, | |
80 | THREAD_IGNORE | |
81 | }; | |
82 | ||
83 | struct work_atom { | |
84 | struct list_head list; | |
85 | enum thread_state state; | |
aa1ab9d2 | 86 | u64 sched_out_time; |
b1ffe8f3 IM |
87 | u64 wake_up_time; |
88 | u64 sched_in_time; | |
89 | u64 runtime; | |
90 | }; | |
91 | ||
39aeb52f | 92 | struct work_atoms { |
93 | struct list_head work_list; | |
b1ffe8f3 IM |
94 | struct thread *thread; |
95 | struct rb_node node; | |
96 | u64 max_lat; | |
3786310a | 97 | u64 max_lat_at; |
b1ffe8f3 IM |
98 | u64 total_lat; |
99 | u64 nb_atoms; | |
100 | u64 total_runtime; | |
2f80dd44 | 101 | int num_merged; |
b1ffe8f3 IM |
102 | }; |
103 | ||
39aeb52f | 104 | typedef int (*sort_fn_t)(struct work_atoms *, struct work_atoms *); |
b1ffe8f3 | 105 | |
9ec3f4e4 | 106 | struct perf_sched; |
0e9b07e5 | 107 | |
9ec3f4e4 ACM |
108 | struct trace_sched_handler { |
109 | int (*switch_event)(struct perf_sched *sched, struct perf_evsel *evsel, | |
110 | struct perf_sample *sample, struct machine *machine); | |
0e9b07e5 | 111 | |
9ec3f4e4 ACM |
112 | int (*runtime_event)(struct perf_sched *sched, struct perf_evsel *evsel, |
113 | struct perf_sample *sample, struct machine *machine); | |
0e9b07e5 | 114 | |
9ec3f4e4 ACM |
115 | int (*wakeup_event)(struct perf_sched *sched, struct perf_evsel *evsel, |
116 | struct perf_sample *sample, struct machine *machine); | |
0e9b07e5 | 117 | |
cb627505 DA |
118 | /* PERF_RECORD_FORK event, not sched_process_fork tracepoint */ |
119 | int (*fork_event)(struct perf_sched *sched, union perf_event *event, | |
120 | struct machine *machine); | |
0e9b07e5 ACM |
121 | |
122 | int (*migrate_task_event)(struct perf_sched *sched, | |
9ec3f4e4 ACM |
123 | struct perf_evsel *evsel, |
124 | struct perf_sample *sample, | |
125 | struct machine *machine); | |
0e9b07e5 ACM |
126 | }; |
127 | ||
a151a37a | 128 | #define COLOR_PIDS PERF_COLOR_BLUE |
cf294f24 | 129 | #define COLOR_CPUS PERF_COLOR_BG_RED |
a151a37a | 130 | |
99623c62 JO |
131 | struct perf_sched_map { |
132 | DECLARE_BITMAP(comp_cpus_mask, MAX_CPUS); | |
133 | int *comp_cpus; | |
134 | bool comp; | |
a151a37a JO |
135 | struct thread_map *color_pids; |
136 | const char *color_pids_str; | |
cf294f24 JO |
137 | struct cpu_map *color_cpus; |
138 | const char *color_cpus_str; | |
73643bb6 JO |
139 | struct cpu_map *cpus; |
140 | const char *cpus_str; | |
99623c62 JO |
141 | }; |
142 | ||
0e9b07e5 ACM |
143 | struct perf_sched { |
144 | struct perf_tool tool; | |
0e9b07e5 ACM |
145 | const char *sort_order; |
146 | unsigned long nr_tasks; | |
cb06ac25 | 147 | struct task_desc **pid_to_task; |
0e9b07e5 ACM |
148 | struct task_desc **tasks; |
149 | const struct trace_sched_handler *tp_handler; | |
150 | pthread_mutex_t start_work_mutex; | |
151 | pthread_mutex_t work_done_wait_mutex; | |
152 | int profile_cpu; | |
153 | /* | |
154 | * Track the current task - that way we can know whether there's any | |
155 | * weird events, such as a task being switched away that is not current. | |
156 | */ | |
157 | int max_cpu; | |
158 | u32 curr_pid[MAX_CPUS]; | |
159 | struct thread *curr_thread[MAX_CPUS]; | |
160 | char next_shortname1; | |
161 | char next_shortname2; | |
162 | unsigned int replay_repeat; | |
163 | unsigned long nr_run_events; | |
164 | unsigned long nr_sleep_events; | |
165 | unsigned long nr_wakeup_events; | |
166 | unsigned long nr_sleep_corrections; | |
167 | unsigned long nr_run_events_optimized; | |
168 | unsigned long targetless_wakeups; | |
169 | unsigned long multitarget_wakeups; | |
170 | unsigned long nr_runs; | |
171 | unsigned long nr_timestamps; | |
172 | unsigned long nr_unordered_timestamps; | |
0e9b07e5 ACM |
173 | unsigned long nr_context_switch_bugs; |
174 | unsigned long nr_events; | |
175 | unsigned long nr_lost_chunks; | |
176 | unsigned long nr_lost_events; | |
177 | u64 run_measurement_overhead; | |
178 | u64 sleep_measurement_overhead; | |
179 | u64 start_time; | |
180 | u64 cpu_usage; | |
181 | u64 runavg_cpu_usage; | |
182 | u64 parent_cpu_usage; | |
183 | u64 runavg_parent_cpu_usage; | |
184 | u64 sum_runtime; | |
185 | u64 sum_fluct; | |
186 | u64 run_avg; | |
187 | u64 all_runtime; | |
188 | u64 all_count; | |
189 | u64 cpu_last_switched[MAX_CPUS]; | |
2f80dd44 | 190 | struct rb_root atom_root, sorted_atom_root, merged_atom_root; |
0e9b07e5 | 191 | struct list_head sort_list, cmp_pid; |
939cda52 | 192 | bool force; |
2f80dd44 | 193 | bool skip_merge; |
99623c62 | 194 | struct perf_sched_map map; |
0e9b07e5 | 195 | }; |
b1ffe8f3 IM |
196 | |
197 | static u64 get_nsecs(void) | |
ec156764 IM |
198 | { |
199 | struct timespec ts; | |
200 | ||
201 | clock_gettime(CLOCK_MONOTONIC, &ts); | |
202 | ||
4fc76e49 | 203 | return ts.tv_sec * NSEC_PER_SEC + ts.tv_nsec; |
ec156764 IM |
204 | } |
205 | ||
0e9b07e5 | 206 | static void burn_nsecs(struct perf_sched *sched, u64 nsecs) |
ec156764 | 207 | { |
b1ffe8f3 | 208 | u64 T0 = get_nsecs(), T1; |
ec156764 IM |
209 | |
210 | do { | |
211 | T1 = get_nsecs(); | |
0e9b07e5 | 212 | } while (T1 + sched->run_measurement_overhead < T0 + nsecs); |
ec156764 IM |
213 | } |
214 | ||
b1ffe8f3 | 215 | static void sleep_nsecs(u64 nsecs) |
ec156764 IM |
216 | { |
217 | struct timespec ts; | |
218 | ||
219 | ts.tv_nsec = nsecs % 999999999; | |
220 | ts.tv_sec = nsecs / 999999999; | |
221 | ||
222 | nanosleep(&ts, NULL); | |
223 | } | |
224 | ||
0e9b07e5 | 225 | static void calibrate_run_measurement_overhead(struct perf_sched *sched) |
ec156764 | 226 | { |
4fc76e49 | 227 | u64 T0, T1, delta, min_delta = NSEC_PER_SEC; |
ec156764 IM |
228 | int i; |
229 | ||
230 | for (i = 0; i < 10; i++) { | |
231 | T0 = get_nsecs(); | |
0e9b07e5 | 232 | burn_nsecs(sched, 0); |
ec156764 IM |
233 | T1 = get_nsecs(); |
234 | delta = T1-T0; | |
235 | min_delta = min(min_delta, delta); | |
236 | } | |
0e9b07e5 | 237 | sched->run_measurement_overhead = min_delta; |
ec156764 | 238 | |
9486aa38 | 239 | printf("run measurement overhead: %" PRIu64 " nsecs\n", min_delta); |
ec156764 IM |
240 | } |
241 | ||
0e9b07e5 | 242 | static void calibrate_sleep_measurement_overhead(struct perf_sched *sched) |
ec156764 | 243 | { |
4fc76e49 | 244 | u64 T0, T1, delta, min_delta = NSEC_PER_SEC; |
ec156764 IM |
245 | int i; |
246 | ||
247 | for (i = 0; i < 10; i++) { | |
248 | T0 = get_nsecs(); | |
249 | sleep_nsecs(10000); | |
250 | T1 = get_nsecs(); | |
251 | delta = T1-T0; | |
252 | min_delta = min(min_delta, delta); | |
253 | } | |
254 | min_delta -= 10000; | |
0e9b07e5 | 255 | sched->sleep_measurement_overhead = min_delta; |
ec156764 | 256 | |
9486aa38 | 257 | printf("sleep measurement overhead: %" PRIu64 " nsecs\n", min_delta); |
ec156764 IM |
258 | } |
259 | ||
39aeb52f | 260 | static struct sched_atom * |
b1ffe8f3 | 261 | get_new_event(struct task_desc *task, u64 timestamp) |
ec156764 | 262 | { |
36479484 | 263 | struct sched_atom *event = zalloc(sizeof(*event)); |
ec156764 IM |
264 | unsigned long idx = task->nr_events; |
265 | size_t size; | |
266 | ||
267 | event->timestamp = timestamp; | |
268 | event->nr = idx; | |
269 | ||
270 | task->nr_events++; | |
39aeb52f | 271 | size = sizeof(struct sched_atom *) * task->nr_events; |
272 | task->atoms = realloc(task->atoms, size); | |
273 | BUG_ON(!task->atoms); | |
ec156764 | 274 | |
39aeb52f | 275 | task->atoms[idx] = event; |
ec156764 IM |
276 | |
277 | return event; | |
278 | } | |
279 | ||
39aeb52f | 280 | static struct sched_atom *last_event(struct task_desc *task) |
ec156764 IM |
281 | { |
282 | if (!task->nr_events) | |
283 | return NULL; | |
284 | ||
39aeb52f | 285 | return task->atoms[task->nr_events - 1]; |
ec156764 IM |
286 | } |
287 | ||
0e9b07e5 ACM |
288 | static void add_sched_event_run(struct perf_sched *sched, struct task_desc *task, |
289 | u64 timestamp, u64 duration) | |
ec156764 | 290 | { |
39aeb52f | 291 | struct sched_atom *event, *curr_event = last_event(task); |
ec156764 IM |
292 | |
293 | /* | |
fbf94829 IM |
294 | * optimize an existing RUN event by merging this one |
295 | * to it: | |
296 | */ | |
ec156764 | 297 | if (curr_event && curr_event->type == SCHED_EVENT_RUN) { |
0e9b07e5 | 298 | sched->nr_run_events_optimized++; |
ec156764 IM |
299 | curr_event->duration += duration; |
300 | return; | |
301 | } | |
302 | ||
303 | event = get_new_event(task, timestamp); | |
304 | ||
305 | event->type = SCHED_EVENT_RUN; | |
306 | event->duration = duration; | |
307 | ||
0e9b07e5 | 308 | sched->nr_run_events++; |
ec156764 IM |
309 | } |
310 | ||
0e9b07e5 ACM |
311 | static void add_sched_event_wakeup(struct perf_sched *sched, struct task_desc *task, |
312 | u64 timestamp, struct task_desc *wakee) | |
ec156764 | 313 | { |
39aeb52f | 314 | struct sched_atom *event, *wakee_event; |
ec156764 IM |
315 | |
316 | event = get_new_event(task, timestamp); | |
317 | event->type = SCHED_EVENT_WAKEUP; | |
318 | event->wakee = wakee; | |
319 | ||
320 | wakee_event = last_event(wakee); | |
321 | if (!wakee_event || wakee_event->type != SCHED_EVENT_SLEEP) { | |
0e9b07e5 | 322 | sched->targetless_wakeups++; |
ec156764 IM |
323 | return; |
324 | } | |
325 | if (wakee_event->wait_sem) { | |
0e9b07e5 | 326 | sched->multitarget_wakeups++; |
ec156764 IM |
327 | return; |
328 | } | |
329 | ||
36479484 | 330 | wakee_event->wait_sem = zalloc(sizeof(*wakee_event->wait_sem)); |
ec156764 IM |
331 | sem_init(wakee_event->wait_sem, 0, 0); |
332 | wakee_event->specific_wait = 1; | |
333 | event->wait_sem = wakee_event->wait_sem; | |
334 | ||
0e9b07e5 | 335 | sched->nr_wakeup_events++; |
ec156764 IM |
336 | } |
337 | ||
0e9b07e5 ACM |
338 | static void add_sched_event_sleep(struct perf_sched *sched, struct task_desc *task, |
339 | u64 timestamp, u64 task_state __maybe_unused) | |
ec156764 | 340 | { |
39aeb52f | 341 | struct sched_atom *event = get_new_event(task, timestamp); |
ec156764 IM |
342 | |
343 | event->type = SCHED_EVENT_SLEEP; | |
344 | ||
0e9b07e5 | 345 | sched->nr_sleep_events++; |
ec156764 IM |
346 | } |
347 | ||
0e9b07e5 ACM |
348 | static struct task_desc *register_pid(struct perf_sched *sched, |
349 | unsigned long pid, const char *comm) | |
ec156764 IM |
350 | { |
351 | struct task_desc *task; | |
cb06ac25 | 352 | static int pid_max; |
ec156764 | 353 | |
cb06ac25 YS |
354 | if (sched->pid_to_task == NULL) { |
355 | if (sysctl__read_int("kernel/pid_max", &pid_max) < 0) | |
356 | pid_max = MAX_PID; | |
357 | BUG_ON((sched->pid_to_task = calloc(pid_max, sizeof(struct task_desc *))) == NULL); | |
358 | } | |
3a423a5c YS |
359 | if (pid >= (unsigned long)pid_max) { |
360 | BUG_ON((sched->pid_to_task = realloc(sched->pid_to_task, (pid + 1) * | |
361 | sizeof(struct task_desc *))) == NULL); | |
362 | while (pid >= (unsigned long)pid_max) | |
363 | sched->pid_to_task[pid_max++] = NULL; | |
364 | } | |
ec156764 | 365 | |
0e9b07e5 | 366 | task = sched->pid_to_task[pid]; |
ec156764 IM |
367 | |
368 | if (task) | |
369 | return task; | |
370 | ||
36479484 | 371 | task = zalloc(sizeof(*task)); |
ec156764 | 372 | task->pid = pid; |
0e9b07e5 | 373 | task->nr = sched->nr_tasks; |
ec156764 IM |
374 | strcpy(task->comm, comm); |
375 | /* | |
376 | * every task starts in sleeping state - this gets ignored | |
377 | * if there's no wakeup pointing to this sleep state: | |
378 | */ | |
0e9b07e5 | 379 | add_sched_event_sleep(sched, task, 0, 0); |
ec156764 | 380 | |
0e9b07e5 ACM |
381 | sched->pid_to_task[pid] = task; |
382 | sched->nr_tasks++; | |
0755bc4d | 383 | sched->tasks = realloc(sched->tasks, sched->nr_tasks * sizeof(struct task_desc *)); |
0e9b07e5 ACM |
384 | BUG_ON(!sched->tasks); |
385 | sched->tasks[task->nr] = task; | |
ec156764 | 386 | |
ad236fd2 | 387 | if (verbose) |
0e9b07e5 | 388 | printf("registered task #%ld, PID %ld (%s)\n", sched->nr_tasks, pid, comm); |
ec156764 IM |
389 | |
390 | return task; | |
391 | } | |
392 | ||
393 | ||
0e9b07e5 | 394 | static void print_task_traces(struct perf_sched *sched) |
ec156764 IM |
395 | { |
396 | struct task_desc *task; | |
397 | unsigned long i; | |
398 | ||
0e9b07e5 ACM |
399 | for (i = 0; i < sched->nr_tasks; i++) { |
400 | task = sched->tasks[i]; | |
ad236fd2 | 401 | printf("task %6ld (%20s:%10ld), nr_events: %ld\n", |
ec156764 IM |
402 | task->nr, task->comm, task->pid, task->nr_events); |
403 | } | |
404 | } | |
405 | ||
0e9b07e5 | 406 | static void add_cross_task_wakeups(struct perf_sched *sched) |
ec156764 IM |
407 | { |
408 | struct task_desc *task1, *task2; | |
409 | unsigned long i, j; | |
410 | ||
0e9b07e5 ACM |
411 | for (i = 0; i < sched->nr_tasks; i++) { |
412 | task1 = sched->tasks[i]; | |
ec156764 | 413 | j = i + 1; |
0e9b07e5 | 414 | if (j == sched->nr_tasks) |
ec156764 | 415 | j = 0; |
0e9b07e5 ACM |
416 | task2 = sched->tasks[j]; |
417 | add_sched_event_wakeup(sched, task1, 0, task2); | |
ec156764 IM |
418 | } |
419 | } | |
420 | ||
0e9b07e5 ACM |
421 | static void perf_sched__process_event(struct perf_sched *sched, |
422 | struct sched_atom *atom) | |
ec156764 IM |
423 | { |
424 | int ret = 0; | |
ec156764 | 425 | |
39aeb52f | 426 | switch (atom->type) { |
ec156764 | 427 | case SCHED_EVENT_RUN: |
0e9b07e5 | 428 | burn_nsecs(sched, atom->duration); |
ec156764 IM |
429 | break; |
430 | case SCHED_EVENT_SLEEP: | |
39aeb52f | 431 | if (atom->wait_sem) |
432 | ret = sem_wait(atom->wait_sem); | |
ec156764 IM |
433 | BUG_ON(ret); |
434 | break; | |
435 | case SCHED_EVENT_WAKEUP: | |
39aeb52f | 436 | if (atom->wait_sem) |
437 | ret = sem_post(atom->wait_sem); | |
ec156764 IM |
438 | BUG_ON(ret); |
439 | break; | |
55ffb7a6 MG |
440 | case SCHED_EVENT_MIGRATION: |
441 | break; | |
ec156764 IM |
442 | default: |
443 | BUG_ON(1); | |
444 | } | |
445 | } | |
446 | ||
b1ffe8f3 | 447 | static u64 get_cpu_usage_nsec_parent(void) |
ec156764 IM |
448 | { |
449 | struct rusage ru; | |
b1ffe8f3 | 450 | u64 sum; |
ec156764 IM |
451 | int err; |
452 | ||
453 | err = getrusage(RUSAGE_SELF, &ru); | |
454 | BUG_ON(err); | |
455 | ||
4fc76e49 ACM |
456 | sum = ru.ru_utime.tv_sec * NSEC_PER_SEC + ru.ru_utime.tv_usec * NSEC_PER_USEC; |
457 | sum += ru.ru_stime.tv_sec * NSEC_PER_SEC + ru.ru_stime.tv_usec * NSEC_PER_USEC; | |
ec156764 IM |
458 | |
459 | return sum; | |
460 | } | |
461 | ||
939cda52 | 462 | static int self_open_counters(struct perf_sched *sched, unsigned long cur_task) |
ec156764 | 463 | { |
c0c9e721 | 464 | struct perf_event_attr attr; |
939cda52 | 465 | char sbuf[STRERR_BUFSIZE], info[STRERR_BUFSIZE]; |
c0c9e721 | 466 | int fd; |
939cda52 YS |
467 | struct rlimit limit; |
468 | bool need_privilege = false; | |
ec156764 | 469 | |
c0c9e721 | 470 | memset(&attr, 0, sizeof(attr)); |
ec156764 | 471 | |
c0c9e721 XG |
472 | attr.type = PERF_TYPE_SOFTWARE; |
473 | attr.config = PERF_COUNT_SW_TASK_CLOCK; | |
ec156764 | 474 | |
939cda52 | 475 | force_again: |
57480d2c YD |
476 | fd = sys_perf_event_open(&attr, 0, -1, -1, |
477 | perf_event_open_cloexec_flag()); | |
c0c9e721 | 478 | |
1aff59be | 479 | if (fd < 0) { |
939cda52 YS |
480 | if (errno == EMFILE) { |
481 | if (sched->force) { | |
482 | BUG_ON(getrlimit(RLIMIT_NOFILE, &limit) == -1); | |
483 | limit.rlim_cur += sched->nr_tasks - cur_task; | |
484 | if (limit.rlim_cur > limit.rlim_max) { | |
485 | limit.rlim_max = limit.rlim_cur; | |
486 | need_privilege = true; | |
487 | } | |
488 | if (setrlimit(RLIMIT_NOFILE, &limit) == -1) { | |
489 | if (need_privilege && errno == EPERM) | |
490 | strcpy(info, "Need privilege\n"); | |
491 | } else | |
492 | goto force_again; | |
493 | } else | |
494 | strcpy(info, "Have a try with -f option\n"); | |
495 | } | |
60b7d14a | 496 | pr_err("Error: sys_perf_event_open() syscall returned " |
939cda52 | 497 | "with %d (%s)\n%s", fd, |
c8b5f2c9 | 498 | str_error_r(errno, sbuf, sizeof(sbuf)), info); |
1aff59be YS |
499 | exit(EXIT_FAILURE); |
500 | } | |
c0c9e721 XG |
501 | return fd; |
502 | } | |
503 | ||
504 | static u64 get_cpu_usage_nsec_self(int fd) | |
505 | { | |
506 | u64 runtime; | |
507 | int ret; | |
508 | ||
509 | ret = read(fd, &runtime, sizeof(runtime)); | |
510 | BUG_ON(ret != sizeof(runtime)); | |
511 | ||
512 | return runtime; | |
ec156764 IM |
513 | } |
514 | ||
0e9b07e5 ACM |
515 | struct sched_thread_parms { |
516 | struct task_desc *task; | |
517 | struct perf_sched *sched; | |
08097abc | 518 | int fd; |
0e9b07e5 ACM |
519 | }; |
520 | ||
ec156764 IM |
521 | static void *thread_func(void *ctx) |
522 | { | |
0e9b07e5 ACM |
523 | struct sched_thread_parms *parms = ctx; |
524 | struct task_desc *this_task = parms->task; | |
525 | struct perf_sched *sched = parms->sched; | |
b1ffe8f3 | 526 | u64 cpu_usage_0, cpu_usage_1; |
ec156764 IM |
527 | unsigned long i, ret; |
528 | char comm2[22]; | |
08097abc | 529 | int fd = parms->fd; |
ec156764 | 530 | |
74cf249d | 531 | zfree(&parms); |
0e9b07e5 | 532 | |
ec156764 IM |
533 | sprintf(comm2, ":%s", this_task->comm); |
534 | prctl(PR_SET_NAME, comm2); | |
a116e05d ACM |
535 | if (fd < 0) |
536 | return NULL; | |
ec156764 IM |
537 | again: |
538 | ret = sem_post(&this_task->ready_for_work); | |
539 | BUG_ON(ret); | |
0e9b07e5 | 540 | ret = pthread_mutex_lock(&sched->start_work_mutex); |
ec156764 | 541 | BUG_ON(ret); |
0e9b07e5 | 542 | ret = pthread_mutex_unlock(&sched->start_work_mutex); |
ec156764 | 543 | BUG_ON(ret); |
ec156764 | 544 | |
c0c9e721 | 545 | cpu_usage_0 = get_cpu_usage_nsec_self(fd); |
ec156764 IM |
546 | |
547 | for (i = 0; i < this_task->nr_events; i++) { | |
548 | this_task->curr_event = i; | |
0e9b07e5 | 549 | perf_sched__process_event(sched, this_task->atoms[i]); |
ec156764 IM |
550 | } |
551 | ||
c0c9e721 | 552 | cpu_usage_1 = get_cpu_usage_nsec_self(fd); |
ec156764 | 553 | this_task->cpu_usage = cpu_usage_1 - cpu_usage_0; |
ec156764 IM |
554 | ret = sem_post(&this_task->work_done_sem); |
555 | BUG_ON(ret); | |
ec156764 | 556 | |
0e9b07e5 | 557 | ret = pthread_mutex_lock(&sched->work_done_wait_mutex); |
ec156764 | 558 | BUG_ON(ret); |
0e9b07e5 | 559 | ret = pthread_mutex_unlock(&sched->work_done_wait_mutex); |
ec156764 | 560 | BUG_ON(ret); |
ec156764 IM |
561 | |
562 | goto again; | |
563 | } | |
564 | ||
0e9b07e5 | 565 | static void create_tasks(struct perf_sched *sched) |
ec156764 IM |
566 | { |
567 | struct task_desc *task; | |
568 | pthread_attr_t attr; | |
569 | unsigned long i; | |
570 | int err; | |
571 | ||
572 | err = pthread_attr_init(&attr); | |
573 | BUG_ON(err); | |
12f7e036 JP |
574 | err = pthread_attr_setstacksize(&attr, |
575 | (size_t) max(16 * 1024, PTHREAD_STACK_MIN)); | |
ec156764 | 576 | BUG_ON(err); |
0e9b07e5 | 577 | err = pthread_mutex_lock(&sched->start_work_mutex); |
ec156764 | 578 | BUG_ON(err); |
0e9b07e5 | 579 | err = pthread_mutex_lock(&sched->work_done_wait_mutex); |
ec156764 | 580 | BUG_ON(err); |
0e9b07e5 ACM |
581 | for (i = 0; i < sched->nr_tasks; i++) { |
582 | struct sched_thread_parms *parms = malloc(sizeof(*parms)); | |
583 | BUG_ON(parms == NULL); | |
584 | parms->task = task = sched->tasks[i]; | |
585 | parms->sched = sched; | |
939cda52 | 586 | parms->fd = self_open_counters(sched, i); |
ec156764 IM |
587 | sem_init(&task->sleep_sem, 0, 0); |
588 | sem_init(&task->ready_for_work, 0, 0); | |
589 | sem_init(&task->work_done_sem, 0, 0); | |
590 | task->curr_event = 0; | |
0e9b07e5 | 591 | err = pthread_create(&task->thread, &attr, thread_func, parms); |
ec156764 IM |
592 | BUG_ON(err); |
593 | } | |
594 | } | |
595 | ||
0e9b07e5 | 596 | static void wait_for_tasks(struct perf_sched *sched) |
ec156764 | 597 | { |
b1ffe8f3 | 598 | u64 cpu_usage_0, cpu_usage_1; |
ec156764 IM |
599 | struct task_desc *task; |
600 | unsigned long i, ret; | |
601 | ||
0e9b07e5 ACM |
602 | sched->start_time = get_nsecs(); |
603 | sched->cpu_usage = 0; | |
604 | pthread_mutex_unlock(&sched->work_done_wait_mutex); | |
ec156764 | 605 | |
0e9b07e5 ACM |
606 | for (i = 0; i < sched->nr_tasks; i++) { |
607 | task = sched->tasks[i]; | |
ec156764 IM |
608 | ret = sem_wait(&task->ready_for_work); |
609 | BUG_ON(ret); | |
610 | sem_init(&task->ready_for_work, 0, 0); | |
611 | } | |
0e9b07e5 | 612 | ret = pthread_mutex_lock(&sched->work_done_wait_mutex); |
ec156764 IM |
613 | BUG_ON(ret); |
614 | ||
615 | cpu_usage_0 = get_cpu_usage_nsec_parent(); | |
616 | ||
0e9b07e5 | 617 | pthread_mutex_unlock(&sched->start_work_mutex); |
ec156764 | 618 | |
0e9b07e5 ACM |
619 | for (i = 0; i < sched->nr_tasks; i++) { |
620 | task = sched->tasks[i]; | |
ec156764 IM |
621 | ret = sem_wait(&task->work_done_sem); |
622 | BUG_ON(ret); | |
623 | sem_init(&task->work_done_sem, 0, 0); | |
0e9b07e5 | 624 | sched->cpu_usage += task->cpu_usage; |
ec156764 IM |
625 | task->cpu_usage = 0; |
626 | } | |
627 | ||
628 | cpu_usage_1 = get_cpu_usage_nsec_parent(); | |
0e9b07e5 ACM |
629 | if (!sched->runavg_cpu_usage) |
630 | sched->runavg_cpu_usage = sched->cpu_usage; | |
ff5f3bbd | 631 | sched->runavg_cpu_usage = (sched->runavg_cpu_usage * (sched->replay_repeat - 1) + sched->cpu_usage) / sched->replay_repeat; |
ec156764 | 632 | |
0e9b07e5 ACM |
633 | sched->parent_cpu_usage = cpu_usage_1 - cpu_usage_0; |
634 | if (!sched->runavg_parent_cpu_usage) | |
635 | sched->runavg_parent_cpu_usage = sched->parent_cpu_usage; | |
ff5f3bbd YS |
636 | sched->runavg_parent_cpu_usage = (sched->runavg_parent_cpu_usage * (sched->replay_repeat - 1) + |
637 | sched->parent_cpu_usage)/sched->replay_repeat; | |
ec156764 | 638 | |
0e9b07e5 | 639 | ret = pthread_mutex_lock(&sched->start_work_mutex); |
ec156764 IM |
640 | BUG_ON(ret); |
641 | ||
0e9b07e5 ACM |
642 | for (i = 0; i < sched->nr_tasks; i++) { |
643 | task = sched->tasks[i]; | |
ec156764 IM |
644 | sem_init(&task->sleep_sem, 0, 0); |
645 | task->curr_event = 0; | |
646 | } | |
647 | } | |
648 | ||
0e9b07e5 | 649 | static void run_one_test(struct perf_sched *sched) |
ec156764 | 650 | { |
fb7d0b3c | 651 | u64 T0, T1, delta, avg_delta, fluct; |
ec156764 IM |
652 | |
653 | T0 = get_nsecs(); | |
0e9b07e5 | 654 | wait_for_tasks(sched); |
ec156764 IM |
655 | T1 = get_nsecs(); |
656 | ||
657 | delta = T1 - T0; | |
0e9b07e5 ACM |
658 | sched->sum_runtime += delta; |
659 | sched->nr_runs++; | |
ec156764 | 660 | |
0e9b07e5 | 661 | avg_delta = sched->sum_runtime / sched->nr_runs; |
ec156764 IM |
662 | if (delta < avg_delta) |
663 | fluct = avg_delta - delta; | |
664 | else | |
665 | fluct = delta - avg_delta; | |
0e9b07e5 ACM |
666 | sched->sum_fluct += fluct; |
667 | if (!sched->run_avg) | |
668 | sched->run_avg = delta; | |
ff5f3bbd | 669 | sched->run_avg = (sched->run_avg * (sched->replay_repeat - 1) + delta) / sched->replay_repeat; |
ec156764 | 670 | |
4fc76e49 | 671 | printf("#%-3ld: %0.3f, ", sched->nr_runs, (double)delta / NSEC_PER_MSEC); |
ec156764 | 672 | |
4fc76e49 | 673 | printf("ravg: %0.2f, ", (double)sched->run_avg / NSEC_PER_MSEC); |
ec156764 | 674 | |
ad236fd2 | 675 | printf("cpu: %0.2f / %0.2f", |
4fc76e49 | 676 | (double)sched->cpu_usage / NSEC_PER_MSEC, (double)sched->runavg_cpu_usage / NSEC_PER_MSEC); |
ec156764 IM |
677 | |
678 | #if 0 | |
679 | /* | |
fbf94829 | 680 | * rusage statistics done by the parent, these are less |
0e9b07e5 | 681 | * accurate than the sched->sum_exec_runtime based statistics: |
fbf94829 | 682 | */ |
ad236fd2 | 683 | printf(" [%0.2f / %0.2f]", |
4fc76e49 ACM |
684 | (double)sched->parent_cpu_usage / NSEC_PER_MSEC, |
685 | (double)sched->runavg_parent_cpu_usage / NSEC_PER_MSEC); | |
ec156764 IM |
686 | #endif |
687 | ||
ad236fd2 | 688 | printf("\n"); |
ec156764 | 689 | |
0e9b07e5 ACM |
690 | if (sched->nr_sleep_corrections) |
691 | printf(" (%ld sleep corrections)\n", sched->nr_sleep_corrections); | |
692 | sched->nr_sleep_corrections = 0; | |
ec156764 IM |
693 | } |
694 | ||
0e9b07e5 | 695 | static void test_calibrations(struct perf_sched *sched) |
ec156764 | 696 | { |
b1ffe8f3 | 697 | u64 T0, T1; |
ec156764 IM |
698 | |
699 | T0 = get_nsecs(); | |
4fc76e49 | 700 | burn_nsecs(sched, NSEC_PER_MSEC); |
ec156764 IM |
701 | T1 = get_nsecs(); |
702 | ||
9486aa38 | 703 | printf("the run test took %" PRIu64 " nsecs\n", T1 - T0); |
ec156764 IM |
704 | |
705 | T0 = get_nsecs(); | |
4fc76e49 | 706 | sleep_nsecs(NSEC_PER_MSEC); |
ec156764 IM |
707 | T1 = get_nsecs(); |
708 | ||
9486aa38 | 709 | printf("the sleep test took %" PRIu64 " nsecs\n", T1 - T0); |
ec156764 IM |
710 | } |
711 | ||
a116e05d | 712 | static int |
0e9b07e5 | 713 | replay_wakeup_event(struct perf_sched *sched, |
9ec3f4e4 ACM |
714 | struct perf_evsel *evsel, struct perf_sample *sample, |
715 | struct machine *machine __maybe_unused) | |
419ab0d6 | 716 | { |
9ec3f4e4 ACM |
717 | const char *comm = perf_evsel__strval(evsel, sample, "comm"); |
718 | const u32 pid = perf_evsel__intval(evsel, sample, "pid"); | |
419ab0d6 | 719 | struct task_desc *waker, *wakee; |
fbf94829 | 720 | |
ad236fd2 | 721 | if (verbose) { |
2b7fcbc5 | 722 | printf("sched_wakeup event %p\n", evsel); |
fbf94829 | 723 | |
9ec3f4e4 | 724 | printf(" ... pid %d woke up %s/%d\n", sample->tid, comm, pid); |
ad236fd2 | 725 | } |
fbf94829 | 726 | |
2b7fcbc5 | 727 | waker = register_pid(sched, sample->tid, "<unknown>"); |
9ec3f4e4 | 728 | wakee = register_pid(sched, pid, comm); |
fbf94829 | 729 | |
0e9b07e5 | 730 | add_sched_event_wakeup(sched, waker, sample->time, wakee); |
a116e05d | 731 | return 0; |
ec156764 IM |
732 | } |
733 | ||
9ec3f4e4 ACM |
734 | static int replay_switch_event(struct perf_sched *sched, |
735 | struct perf_evsel *evsel, | |
736 | struct perf_sample *sample, | |
737 | struct machine *machine __maybe_unused) | |
ec156764 | 738 | { |
9ec3f4e4 ACM |
739 | const char *prev_comm = perf_evsel__strval(evsel, sample, "prev_comm"), |
740 | *next_comm = perf_evsel__strval(evsel, sample, "next_comm"); | |
741 | const u32 prev_pid = perf_evsel__intval(evsel, sample, "prev_pid"), | |
742 | next_pid = perf_evsel__intval(evsel, sample, "next_pid"); | |
743 | const u64 prev_state = perf_evsel__intval(evsel, sample, "prev_state"); | |
1d037ca1 | 744 | struct task_desc *prev, __maybe_unused *next; |
7f7f8d0b ACM |
745 | u64 timestamp0, timestamp = sample->time; |
746 | int cpu = sample->cpu; | |
fbf94829 IM |
747 | s64 delta; |
748 | ||
ad236fd2 | 749 | if (verbose) |
2b7fcbc5 | 750 | printf("sched_switch event %p\n", evsel); |
ad236fd2 | 751 | |
fbf94829 | 752 | if (cpu >= MAX_CPUS || cpu < 0) |
a116e05d | 753 | return 0; |
fbf94829 | 754 | |
0e9b07e5 | 755 | timestamp0 = sched->cpu_last_switched[cpu]; |
fbf94829 IM |
756 | if (timestamp0) |
757 | delta = timestamp - timestamp0; | |
758 | else | |
759 | delta = 0; | |
760 | ||
a116e05d | 761 | if (delta < 0) { |
60b7d14a | 762 | pr_err("hm, delta: %" PRIu64 " < 0 ?\n", delta); |
a116e05d ACM |
763 | return -1; |
764 | } | |
fbf94829 | 765 | |
9ec3f4e4 ACM |
766 | pr_debug(" ... switch from %s/%d to %s/%d [ran %" PRIu64 " nsecs]\n", |
767 | prev_comm, prev_pid, next_comm, next_pid, delta); | |
fbf94829 | 768 | |
9ec3f4e4 ACM |
769 | prev = register_pid(sched, prev_pid, prev_comm); |
770 | next = register_pid(sched, next_pid, next_comm); | |
fbf94829 | 771 | |
0e9b07e5 | 772 | sched->cpu_last_switched[cpu] = timestamp; |
fbf94829 | 773 | |
0e9b07e5 | 774 | add_sched_event_run(sched, prev, timestamp, delta); |
9ec3f4e4 | 775 | add_sched_event_sleep(sched, prev, timestamp, prev_state); |
a116e05d ACM |
776 | |
777 | return 0; | |
fbf94829 IM |
778 | } |
779 | ||
cb627505 DA |
780 | static int replay_fork_event(struct perf_sched *sched, |
781 | union perf_event *event, | |
782 | struct machine *machine) | |
419ab0d6 | 783 | { |
cb627505 DA |
784 | struct thread *child, *parent; |
785 | ||
314add6b AH |
786 | child = machine__findnew_thread(machine, event->fork.pid, |
787 | event->fork.tid); | |
788 | parent = machine__findnew_thread(machine, event->fork.ppid, | |
789 | event->fork.ptid); | |
cb627505 DA |
790 | |
791 | if (child == NULL || parent == NULL) { | |
792 | pr_debug("thread does not exist on fork event: child %p, parent %p\n", | |
793 | child, parent); | |
b91fc39f | 794 | goto out_put; |
cb627505 | 795 | } |
9ec3f4e4 | 796 | |
419ab0d6 | 797 | if (verbose) { |
cb627505 | 798 | printf("fork event\n"); |
b9c5143a FW |
799 | printf("... parent: %s/%d\n", thread__comm_str(parent), parent->tid); |
800 | printf("... child: %s/%d\n", thread__comm_str(child), child->tid); | |
419ab0d6 | 801 | } |
9ec3f4e4 | 802 | |
b9c5143a FW |
803 | register_pid(sched, parent->tid, thread__comm_str(parent)); |
804 | register_pid(sched, child->tid, thread__comm_str(child)); | |
b91fc39f ACM |
805 | out_put: |
806 | thread__put(child); | |
807 | thread__put(parent); | |
a116e05d | 808 | return 0; |
419ab0d6 | 809 | } |
fbf94829 | 810 | |
b1ffe8f3 IM |
811 | struct sort_dimension { |
812 | const char *name; | |
b5fae128 | 813 | sort_fn_t cmp; |
b1ffe8f3 IM |
814 | struct list_head list; |
815 | }; | |
816 | ||
daa1d7a5 | 817 | static int |
39aeb52f | 818 | thread_lat_cmp(struct list_head *list, struct work_atoms *l, struct work_atoms *r) |
daa1d7a5 FW |
819 | { |
820 | struct sort_dimension *sort; | |
821 | int ret = 0; | |
822 | ||
b5fae128 IM |
823 | BUG_ON(list_empty(list)); |
824 | ||
daa1d7a5 FW |
825 | list_for_each_entry(sort, list, list) { |
826 | ret = sort->cmp(l, r); | |
827 | if (ret) | |
828 | return ret; | |
829 | } | |
830 | ||
831 | return ret; | |
832 | } | |
833 | ||
39aeb52f | 834 | static struct work_atoms * |
b5fae128 IM |
835 | thread_atoms_search(struct rb_root *root, struct thread *thread, |
836 | struct list_head *sort_list) | |
837 | { | |
838 | struct rb_node *node = root->rb_node; | |
39aeb52f | 839 | struct work_atoms key = { .thread = thread }; |
b5fae128 IM |
840 | |
841 | while (node) { | |
39aeb52f | 842 | struct work_atoms *atoms; |
b5fae128 IM |
843 | int cmp; |
844 | ||
39aeb52f | 845 | atoms = container_of(node, struct work_atoms, node); |
b5fae128 IM |
846 | |
847 | cmp = thread_lat_cmp(sort_list, &key, atoms); | |
848 | if (cmp > 0) | |
849 | node = node->rb_left; | |
850 | else if (cmp < 0) | |
851 | node = node->rb_right; | |
852 | else { | |
853 | BUG_ON(thread != atoms->thread); | |
854 | return atoms; | |
855 | } | |
856 | } | |
857 | return NULL; | |
858 | } | |
859 | ||
cdce9d73 | 860 | static void |
39aeb52f | 861 | __thread_latency_insert(struct rb_root *root, struct work_atoms *data, |
daa1d7a5 | 862 | struct list_head *sort_list) |
cdce9d73 FW |
863 | { |
864 | struct rb_node **new = &(root->rb_node), *parent = NULL; | |
865 | ||
866 | while (*new) { | |
39aeb52f | 867 | struct work_atoms *this; |
daa1d7a5 | 868 | int cmp; |
cdce9d73 | 869 | |
39aeb52f | 870 | this = container_of(*new, struct work_atoms, node); |
cdce9d73 | 871 | parent = *new; |
daa1d7a5 FW |
872 | |
873 | cmp = thread_lat_cmp(sort_list, data, this); | |
874 | ||
875 | if (cmp > 0) | |
cdce9d73 | 876 | new = &((*new)->rb_left); |
cdce9d73 | 877 | else |
daa1d7a5 | 878 | new = &((*new)->rb_right); |
cdce9d73 FW |
879 | } |
880 | ||
881 | rb_link_node(&data->node, parent, new); | |
882 | rb_insert_color(&data->node, root); | |
883 | } | |
884 | ||
0e9b07e5 | 885 | static int thread_atoms_insert(struct perf_sched *sched, struct thread *thread) |
cdce9d73 | 886 | { |
36479484 | 887 | struct work_atoms *atoms = zalloc(sizeof(*atoms)); |
a116e05d ACM |
888 | if (!atoms) { |
889 | pr_err("No memory at %s\n", __func__); | |
890 | return -1; | |
891 | } | |
cdce9d73 | 892 | |
f3b623b8 | 893 | atoms->thread = thread__get(thread); |
39aeb52f | 894 | INIT_LIST_HEAD(&atoms->work_list); |
0e9b07e5 | 895 | __thread_latency_insert(&sched->atom_root, atoms, &sched->cmp_pid); |
a116e05d | 896 | return 0; |
cdce9d73 FW |
897 | } |
898 | ||
9ec3f4e4 | 899 | static char sched_out_state(u64 prev_state) |
cdce9d73 FW |
900 | { |
901 | const char *str = TASK_STATE_TO_CHAR_STR; | |
902 | ||
9ec3f4e4 | 903 | return str[prev_state]; |
cdce9d73 FW |
904 | } |
905 | ||
a116e05d | 906 | static int |
39aeb52f | 907 | add_sched_out_event(struct work_atoms *atoms, |
908 | char run_state, | |
909 | u64 timestamp) | |
cdce9d73 | 910 | { |
36479484 | 911 | struct work_atom *atom = zalloc(sizeof(*atom)); |
a116e05d ACM |
912 | if (!atom) { |
913 | pr_err("Non memory at %s", __func__); | |
914 | return -1; | |
915 | } | |
cdce9d73 | 916 | |
aa1ab9d2 FW |
917 | atom->sched_out_time = timestamp; |
918 | ||
39aeb52f | 919 | if (run_state == 'R') { |
b1ffe8f3 | 920 | atom->state = THREAD_WAIT_CPU; |
aa1ab9d2 | 921 | atom->wake_up_time = atom->sched_out_time; |
c6ced611 FW |
922 | } |
923 | ||
39aeb52f | 924 | list_add_tail(&atom->list, &atoms->work_list); |
a116e05d | 925 | return 0; |
cdce9d73 FW |
926 | } |
927 | ||
928 | static void | |
1d037ca1 IT |
929 | add_runtime_event(struct work_atoms *atoms, u64 delta, |
930 | u64 timestamp __maybe_unused) | |
39aeb52f | 931 | { |
932 | struct work_atom *atom; | |
933 | ||
934 | BUG_ON(list_empty(&atoms->work_list)); | |
935 | ||
936 | atom = list_entry(atoms->work_list.prev, struct work_atom, list); | |
937 | ||
938 | atom->runtime += delta; | |
939 | atoms->total_runtime += delta; | |
940 | } | |
941 | ||
942 | static void | |
943 | add_sched_in_event(struct work_atoms *atoms, u64 timestamp) | |
cdce9d73 | 944 | { |
b1ffe8f3 | 945 | struct work_atom *atom; |
66685678 | 946 | u64 delta; |
cdce9d73 | 947 | |
39aeb52f | 948 | if (list_empty(&atoms->work_list)) |
cdce9d73 FW |
949 | return; |
950 | ||
39aeb52f | 951 | atom = list_entry(atoms->work_list.prev, struct work_atom, list); |
cdce9d73 | 952 | |
b1ffe8f3 | 953 | if (atom->state != THREAD_WAIT_CPU) |
cdce9d73 FW |
954 | return; |
955 | ||
b1ffe8f3 IM |
956 | if (timestamp < atom->wake_up_time) { |
957 | atom->state = THREAD_IGNORE; | |
cdce9d73 FW |
958 | return; |
959 | } | |
960 | ||
b1ffe8f3 IM |
961 | atom->state = THREAD_SCHED_IN; |
962 | atom->sched_in_time = timestamp; | |
66685678 | 963 | |
b1ffe8f3 | 964 | delta = atom->sched_in_time - atom->wake_up_time; |
66685678 | 965 | atoms->total_lat += delta; |
3786310a | 966 | if (delta > atoms->max_lat) { |
66685678 | 967 | atoms->max_lat = delta; |
3786310a FW |
968 | atoms->max_lat_at = timestamp; |
969 | } | |
66685678 | 970 | atoms->nb_atoms++; |
cdce9d73 FW |
971 | } |
972 | ||
9ec3f4e4 ACM |
973 | static int latency_switch_event(struct perf_sched *sched, |
974 | struct perf_evsel *evsel, | |
975 | struct perf_sample *sample, | |
976 | struct machine *machine) | |
cdce9d73 | 977 | { |
9ec3f4e4 ACM |
978 | const u32 prev_pid = perf_evsel__intval(evsel, sample, "prev_pid"), |
979 | next_pid = perf_evsel__intval(evsel, sample, "next_pid"); | |
980 | const u64 prev_state = perf_evsel__intval(evsel, sample, "prev_state"); | |
39aeb52f | 981 | struct work_atoms *out_events, *in_events; |
cdce9d73 | 982 | struct thread *sched_out, *sched_in; |
7f7f8d0b | 983 | u64 timestamp0, timestamp = sample->time; |
b91fc39f | 984 | int cpu = sample->cpu, err = -1; |
ea92ed5a IM |
985 | s64 delta; |
986 | ||
39aeb52f | 987 | BUG_ON(cpu >= MAX_CPUS || cpu < 0); |
ea92ed5a | 988 | |
0e9b07e5 ACM |
989 | timestamp0 = sched->cpu_last_switched[cpu]; |
990 | sched->cpu_last_switched[cpu] = timestamp; | |
ea92ed5a IM |
991 | if (timestamp0) |
992 | delta = timestamp - timestamp0; | |
993 | else | |
994 | delta = 0; | |
995 | ||
a116e05d ACM |
996 | if (delta < 0) { |
997 | pr_err("hm, delta: %" PRIu64 " < 0 ?\n", delta); | |
998 | return -1; | |
999 | } | |
cdce9d73 | 1000 | |
1fcb8768 AH |
1001 | sched_out = machine__findnew_thread(machine, -1, prev_pid); |
1002 | sched_in = machine__findnew_thread(machine, -1, next_pid); | |
b91fc39f ACM |
1003 | if (sched_out == NULL || sched_in == NULL) |
1004 | goto out_put; | |
cdce9d73 | 1005 | |
0e9b07e5 | 1006 | out_events = thread_atoms_search(&sched->atom_root, sched_out, &sched->cmp_pid); |
39aeb52f | 1007 | if (!out_events) { |
0e9b07e5 | 1008 | if (thread_atoms_insert(sched, sched_out)) |
b91fc39f | 1009 | goto out_put; |
0e9b07e5 | 1010 | out_events = thread_atoms_search(&sched->atom_root, sched_out, &sched->cmp_pid); |
a116e05d ACM |
1011 | if (!out_events) { |
1012 | pr_err("out-event: Internal tree error"); | |
b91fc39f | 1013 | goto out_put; |
a116e05d | 1014 | } |
39aeb52f | 1015 | } |
9ec3f4e4 | 1016 | if (add_sched_out_event(out_events, sched_out_state(prev_state), timestamp)) |
a116e05d | 1017 | return -1; |
39aeb52f | 1018 | |
0e9b07e5 | 1019 | in_events = thread_atoms_search(&sched->atom_root, sched_in, &sched->cmp_pid); |
39aeb52f | 1020 | if (!in_events) { |
0e9b07e5 | 1021 | if (thread_atoms_insert(sched, sched_in)) |
b91fc39f | 1022 | goto out_put; |
0e9b07e5 | 1023 | in_events = thread_atoms_search(&sched->atom_root, sched_in, &sched->cmp_pid); |
a116e05d ACM |
1024 | if (!in_events) { |
1025 | pr_err("in-event: Internal tree error"); | |
b91fc39f | 1026 | goto out_put; |
a116e05d | 1027 | } |
39aeb52f | 1028 | /* |
1029 | * Take came in we have not heard about yet, | |
1030 | * add in an initial atom in runnable state: | |
1031 | */ | |
a116e05d | 1032 | if (add_sched_out_event(in_events, 'R', timestamp)) |
b91fc39f | 1033 | goto out_put; |
cdce9d73 | 1034 | } |
39aeb52f | 1035 | add_sched_in_event(in_events, timestamp); |
b91fc39f ACM |
1036 | err = 0; |
1037 | out_put: | |
1038 | thread__put(sched_out); | |
1039 | thread__put(sched_in); | |
1040 | return err; | |
39aeb52f | 1041 | } |
cdce9d73 | 1042 | |
9ec3f4e4 ACM |
1043 | static int latency_runtime_event(struct perf_sched *sched, |
1044 | struct perf_evsel *evsel, | |
1045 | struct perf_sample *sample, | |
1046 | struct machine *machine) | |
39aeb52f | 1047 | { |
9ec3f4e4 ACM |
1048 | const u32 pid = perf_evsel__intval(evsel, sample, "pid"); |
1049 | const u64 runtime = perf_evsel__intval(evsel, sample, "runtime"); | |
1fcb8768 | 1050 | struct thread *thread = machine__findnew_thread(machine, -1, pid); |
0e9b07e5 | 1051 | struct work_atoms *atoms = thread_atoms_search(&sched->atom_root, thread, &sched->cmp_pid); |
7f7f8d0b | 1052 | u64 timestamp = sample->time; |
b91fc39f ACM |
1053 | int cpu = sample->cpu, err = -1; |
1054 | ||
1055 | if (thread == NULL) | |
1056 | return -1; | |
39aeb52f | 1057 | |
1058 | BUG_ON(cpu >= MAX_CPUS || cpu < 0); | |
39aeb52f | 1059 | if (!atoms) { |
0e9b07e5 | 1060 | if (thread_atoms_insert(sched, thread)) |
b91fc39f | 1061 | goto out_put; |
0e9b07e5 | 1062 | atoms = thread_atoms_search(&sched->atom_root, thread, &sched->cmp_pid); |
a116e05d | 1063 | if (!atoms) { |
60b7d14a | 1064 | pr_err("in-event: Internal tree error"); |
b91fc39f | 1065 | goto out_put; |
a116e05d ACM |
1066 | } |
1067 | if (add_sched_out_event(atoms, 'R', timestamp)) | |
b91fc39f | 1068 | goto out_put; |
cdce9d73 FW |
1069 | } |
1070 | ||
9ec3f4e4 | 1071 | add_runtime_event(atoms, runtime, timestamp); |
b91fc39f ACM |
1072 | err = 0; |
1073 | out_put: | |
1074 | thread__put(thread); | |
1075 | return err; | |
cdce9d73 FW |
1076 | } |
1077 | ||
9ec3f4e4 ACM |
1078 | static int latency_wakeup_event(struct perf_sched *sched, |
1079 | struct perf_evsel *evsel, | |
1080 | struct perf_sample *sample, | |
1081 | struct machine *machine) | |
cdce9d73 | 1082 | { |
0680ee7d | 1083 | const u32 pid = perf_evsel__intval(evsel, sample, "pid"); |
39aeb52f | 1084 | struct work_atoms *atoms; |
b1ffe8f3 | 1085 | struct work_atom *atom; |
cdce9d73 | 1086 | struct thread *wakee; |
7f7f8d0b | 1087 | u64 timestamp = sample->time; |
b91fc39f | 1088 | int err = -1; |
cdce9d73 | 1089 | |
1fcb8768 | 1090 | wakee = machine__findnew_thread(machine, -1, pid); |
b91fc39f ACM |
1091 | if (wakee == NULL) |
1092 | return -1; | |
0e9b07e5 | 1093 | atoms = thread_atoms_search(&sched->atom_root, wakee, &sched->cmp_pid); |
17562205 | 1094 | if (!atoms) { |
0e9b07e5 | 1095 | if (thread_atoms_insert(sched, wakee)) |
b91fc39f | 1096 | goto out_put; |
0e9b07e5 | 1097 | atoms = thread_atoms_search(&sched->atom_root, wakee, &sched->cmp_pid); |
a116e05d | 1098 | if (!atoms) { |
60b7d14a | 1099 | pr_err("wakeup-event: Internal tree error"); |
b91fc39f | 1100 | goto out_put; |
a116e05d ACM |
1101 | } |
1102 | if (add_sched_out_event(atoms, 'S', timestamp)) | |
b91fc39f | 1103 | goto out_put; |
cdce9d73 FW |
1104 | } |
1105 | ||
39aeb52f | 1106 | BUG_ON(list_empty(&atoms->work_list)); |
cdce9d73 | 1107 | |
39aeb52f | 1108 | atom = list_entry(atoms->work_list.prev, struct work_atom, list); |
cdce9d73 | 1109 | |
55ffb7a6 | 1110 | /* |
67d6259d DY |
1111 | * As we do not guarantee the wakeup event happens when |
1112 | * task is out of run queue, also may happen when task is | |
1113 | * on run queue and wakeup only change ->state to TASK_RUNNING, | |
1114 | * then we should not set the ->wake_up_time when wake up a | |
1115 | * task which is on run queue. | |
1116 | * | |
55ffb7a6 MG |
1117 | * You WILL be missing events if you've recorded only |
1118 | * one CPU, or are only looking at only one, so don't | |
67d6259d | 1119 | * skip in this case. |
55ffb7a6 | 1120 | */ |
0e9b07e5 | 1121 | if (sched->profile_cpu == -1 && atom->state != THREAD_SLEEPING) |
b91fc39f | 1122 | goto out_ok; |
cdce9d73 | 1123 | |
0e9b07e5 | 1124 | sched->nr_timestamps++; |
ea57c4f5 | 1125 | if (atom->sched_out_time > timestamp) { |
0e9b07e5 | 1126 | sched->nr_unordered_timestamps++; |
b91fc39f | 1127 | goto out_ok; |
ea57c4f5 | 1128 | } |
aa1ab9d2 | 1129 | |
b1ffe8f3 IM |
1130 | atom->state = THREAD_WAIT_CPU; |
1131 | atom->wake_up_time = timestamp; | |
b91fc39f ACM |
1132 | out_ok: |
1133 | err = 0; | |
1134 | out_put: | |
1135 | thread__put(wakee); | |
1136 | return err; | |
cdce9d73 FW |
1137 | } |
1138 | ||
9ec3f4e4 ACM |
1139 | static int latency_migrate_task_event(struct perf_sched *sched, |
1140 | struct perf_evsel *evsel, | |
1141 | struct perf_sample *sample, | |
1142 | struct machine *machine) | |
55ffb7a6 | 1143 | { |
9ec3f4e4 | 1144 | const u32 pid = perf_evsel__intval(evsel, sample, "pid"); |
7f7f8d0b | 1145 | u64 timestamp = sample->time; |
55ffb7a6 MG |
1146 | struct work_atoms *atoms; |
1147 | struct work_atom *atom; | |
1148 | struct thread *migrant; | |
b91fc39f | 1149 | int err = -1; |
55ffb7a6 MG |
1150 | |
1151 | /* | |
1152 | * Only need to worry about migration when profiling one CPU. | |
1153 | */ | |
0e9b07e5 | 1154 | if (sched->profile_cpu == -1) |
a116e05d | 1155 | return 0; |
55ffb7a6 | 1156 | |
1fcb8768 | 1157 | migrant = machine__findnew_thread(machine, -1, pid); |
b91fc39f ACM |
1158 | if (migrant == NULL) |
1159 | return -1; | |
0e9b07e5 | 1160 | atoms = thread_atoms_search(&sched->atom_root, migrant, &sched->cmp_pid); |
55ffb7a6 | 1161 | if (!atoms) { |
0e9b07e5 | 1162 | if (thread_atoms_insert(sched, migrant)) |
b91fc39f | 1163 | goto out_put; |
b9c5143a | 1164 | register_pid(sched, migrant->tid, thread__comm_str(migrant)); |
0e9b07e5 | 1165 | atoms = thread_atoms_search(&sched->atom_root, migrant, &sched->cmp_pid); |
a116e05d | 1166 | if (!atoms) { |
60b7d14a | 1167 | pr_err("migration-event: Internal tree error"); |
b91fc39f | 1168 | goto out_put; |
a116e05d ACM |
1169 | } |
1170 | if (add_sched_out_event(atoms, 'R', timestamp)) | |
b91fc39f | 1171 | goto out_put; |
55ffb7a6 MG |
1172 | } |
1173 | ||
1174 | BUG_ON(list_empty(&atoms->work_list)); | |
1175 | ||
1176 | atom = list_entry(atoms->work_list.prev, struct work_atom, list); | |
1177 | atom->sched_in_time = atom->sched_out_time = atom->wake_up_time = timestamp; | |
1178 | ||
0e9b07e5 | 1179 | sched->nr_timestamps++; |
55ffb7a6 MG |
1180 | |
1181 | if (atom->sched_out_time > timestamp) | |
0e9b07e5 | 1182 | sched->nr_unordered_timestamps++; |
b91fc39f ACM |
1183 | err = 0; |
1184 | out_put: | |
1185 | thread__put(migrant); | |
1186 | return err; | |
55ffb7a6 MG |
1187 | } |
1188 | ||
0e9b07e5 | 1189 | static void output_lat_thread(struct perf_sched *sched, struct work_atoms *work_list) |
cdce9d73 | 1190 | { |
cdce9d73 FW |
1191 | int i; |
1192 | int ret; | |
66685678 | 1193 | u64 avg; |
cdce9d73 | 1194 | |
39aeb52f | 1195 | if (!work_list->nb_atoms) |
cdce9d73 | 1196 | return; |
ea57c4f5 IM |
1197 | /* |
1198 | * Ignore idle threads: | |
1199 | */ | |
b9c5143a | 1200 | if (!strcmp(thread__comm_str(work_list->thread), "swapper")) |
ea57c4f5 | 1201 | return; |
cdce9d73 | 1202 | |
0e9b07e5 ACM |
1203 | sched->all_runtime += work_list->total_runtime; |
1204 | sched->all_count += work_list->nb_atoms; | |
66685678 | 1205 | |
2f80dd44 JB |
1206 | if (work_list->num_merged > 1) |
1207 | ret = printf(" %s:(%d) ", thread__comm_str(work_list->thread), work_list->num_merged); | |
1208 | else | |
1209 | ret = printf(" %s:%d ", thread__comm_str(work_list->thread), work_list->thread->tid); | |
cdce9d73 | 1210 | |
08f69e6c | 1211 | for (i = 0; i < 24 - ret; i++) |
cdce9d73 FW |
1212 | printf(" "); |
1213 | ||
39aeb52f | 1214 | avg = work_list->total_lat / work_list->nb_atoms; |
cdce9d73 | 1215 | |
80790e0b | 1216 | printf("|%11.3f ms |%9" PRIu64 " | avg:%9.3f ms | max:%9.3f ms | max at: %13.6f s\n", |
4fc76e49 ACM |
1217 | (double)work_list->total_runtime / NSEC_PER_MSEC, |
1218 | work_list->nb_atoms, (double)avg / NSEC_PER_MSEC, | |
1219 | (double)work_list->max_lat / NSEC_PER_MSEC, | |
1220 | (double)work_list->max_lat_at / NSEC_PER_SEC); | |
cdce9d73 FW |
1221 | } |
1222 | ||
39aeb52f | 1223 | static int pid_cmp(struct work_atoms *l, struct work_atoms *r) |
daa1d7a5 | 1224 | { |
0014de17 JO |
1225 | if (l->thread == r->thread) |
1226 | return 0; | |
38051234 | 1227 | if (l->thread->tid < r->thread->tid) |
daa1d7a5 | 1228 | return -1; |
38051234 | 1229 | if (l->thread->tid > r->thread->tid) |
daa1d7a5 | 1230 | return 1; |
0014de17 | 1231 | return (int)(l->thread - r->thread); |
daa1d7a5 FW |
1232 | } |
1233 | ||
39aeb52f | 1234 | static int avg_cmp(struct work_atoms *l, struct work_atoms *r) |
daa1d7a5 FW |
1235 | { |
1236 | u64 avgl, avgr; | |
1237 | ||
1238 | if (!l->nb_atoms) | |
1239 | return -1; | |
1240 | ||
1241 | if (!r->nb_atoms) | |
1242 | return 1; | |
1243 | ||
1244 | avgl = l->total_lat / l->nb_atoms; | |
1245 | avgr = r->total_lat / r->nb_atoms; | |
1246 | ||
1247 | if (avgl < avgr) | |
1248 | return -1; | |
1249 | if (avgl > avgr) | |
1250 | return 1; | |
1251 | ||
1252 | return 0; | |
1253 | } | |
1254 | ||
39aeb52f | 1255 | static int max_cmp(struct work_atoms *l, struct work_atoms *r) |
daa1d7a5 FW |
1256 | { |
1257 | if (l->max_lat < r->max_lat) | |
1258 | return -1; | |
1259 | if (l->max_lat > r->max_lat) | |
1260 | return 1; | |
1261 | ||
1262 | return 0; | |
1263 | } | |
1264 | ||
39aeb52f | 1265 | static int switch_cmp(struct work_atoms *l, struct work_atoms *r) |
daa1d7a5 FW |
1266 | { |
1267 | if (l->nb_atoms < r->nb_atoms) | |
1268 | return -1; | |
1269 | if (l->nb_atoms > r->nb_atoms) | |
1270 | return 1; | |
1271 | ||
1272 | return 0; | |
1273 | } | |
1274 | ||
39aeb52f | 1275 | static int runtime_cmp(struct work_atoms *l, struct work_atoms *r) |
daa1d7a5 FW |
1276 | { |
1277 | if (l->total_runtime < r->total_runtime) | |
1278 | return -1; | |
1279 | if (l->total_runtime > r->total_runtime) | |
1280 | return 1; | |
1281 | ||
1282 | return 0; | |
1283 | } | |
1284 | ||
cbef79a8 | 1285 | static int sort_dimension__add(const char *tok, struct list_head *list) |
daa1d7a5 | 1286 | { |
0e9b07e5 ACM |
1287 | size_t i; |
1288 | static struct sort_dimension avg_sort_dimension = { | |
1289 | .name = "avg", | |
1290 | .cmp = avg_cmp, | |
1291 | }; | |
1292 | static struct sort_dimension max_sort_dimension = { | |
1293 | .name = "max", | |
1294 | .cmp = max_cmp, | |
1295 | }; | |
1296 | static struct sort_dimension pid_sort_dimension = { | |
1297 | .name = "pid", | |
1298 | .cmp = pid_cmp, | |
1299 | }; | |
1300 | static struct sort_dimension runtime_sort_dimension = { | |
1301 | .name = "runtime", | |
1302 | .cmp = runtime_cmp, | |
1303 | }; | |
1304 | static struct sort_dimension switch_sort_dimension = { | |
1305 | .name = "switch", | |
1306 | .cmp = switch_cmp, | |
1307 | }; | |
1308 | struct sort_dimension *available_sorts[] = { | |
1309 | &pid_sort_dimension, | |
1310 | &avg_sort_dimension, | |
1311 | &max_sort_dimension, | |
1312 | &switch_sort_dimension, | |
1313 | &runtime_sort_dimension, | |
1314 | }; | |
daa1d7a5 | 1315 | |
0e9b07e5 | 1316 | for (i = 0; i < ARRAY_SIZE(available_sorts); i++) { |
daa1d7a5 FW |
1317 | if (!strcmp(available_sorts[i]->name, tok)) { |
1318 | list_add_tail(&available_sorts[i]->list, list); | |
1319 | ||
1320 | return 0; | |
1321 | } | |
1322 | } | |
1323 | ||
1324 | return -1; | |
1325 | } | |
1326 | ||
0e9b07e5 | 1327 | static void perf_sched__sort_lat(struct perf_sched *sched) |
daa1d7a5 FW |
1328 | { |
1329 | struct rb_node *node; | |
2f80dd44 JB |
1330 | struct rb_root *root = &sched->atom_root; |
1331 | again: | |
daa1d7a5 | 1332 | for (;;) { |
39aeb52f | 1333 | struct work_atoms *data; |
2f80dd44 | 1334 | node = rb_first(root); |
daa1d7a5 FW |
1335 | if (!node) |
1336 | break; | |
1337 | ||
2f80dd44 | 1338 | rb_erase(node, root); |
39aeb52f | 1339 | data = rb_entry(node, struct work_atoms, node); |
0e9b07e5 | 1340 | __thread_latency_insert(&sched->sorted_atom_root, data, &sched->sort_list); |
daa1d7a5 | 1341 | } |
2f80dd44 JB |
1342 | if (root == &sched->atom_root) { |
1343 | root = &sched->merged_atom_root; | |
1344 | goto again; | |
1345 | } | |
daa1d7a5 FW |
1346 | } |
1347 | ||
0e9b07e5 | 1348 | static int process_sched_wakeup_event(struct perf_tool *tool, |
2b7fcbc5 | 1349 | struct perf_evsel *evsel, |
1d037ca1 | 1350 | struct perf_sample *sample, |
4218e673 | 1351 | struct machine *machine) |
419ab0d6 | 1352 | { |
0e9b07e5 | 1353 | struct perf_sched *sched = container_of(tool, struct perf_sched, tool); |
419ab0d6 | 1354 | |
9ec3f4e4 ACM |
1355 | if (sched->tp_handler->wakeup_event) |
1356 | return sched->tp_handler->wakeup_event(sched, evsel, sample, machine); | |
a116e05d | 1357 | |
2b7fcbc5 | 1358 | return 0; |
419ab0d6 FW |
1359 | } |
1360 | ||
a151a37a JO |
1361 | union map_priv { |
1362 | void *ptr; | |
1363 | bool color; | |
1364 | }; | |
1365 | ||
1366 | static bool thread__has_color(struct thread *thread) | |
1367 | { | |
1368 | union map_priv priv = { | |
1369 | .ptr = thread__priv(thread), | |
1370 | }; | |
1371 | ||
1372 | return priv.color; | |
1373 | } | |
1374 | ||
1375 | static struct thread* | |
1376 | map__findnew_thread(struct perf_sched *sched, struct machine *machine, pid_t pid, pid_t tid) | |
1377 | { | |
1378 | struct thread *thread = machine__findnew_thread(machine, pid, tid); | |
1379 | union map_priv priv = { | |
1380 | .color = false, | |
1381 | }; | |
1382 | ||
1383 | if (!sched->map.color_pids || !thread || thread__priv(thread)) | |
1384 | return thread; | |
1385 | ||
1386 | if (thread_map__has(sched->map.color_pids, tid)) | |
1387 | priv.color = true; | |
1388 | ||
1389 | thread__set_priv(thread, priv.ptr); | |
1390 | return thread; | |
1391 | } | |
1392 | ||
9ec3f4e4 ACM |
1393 | static int map_switch_event(struct perf_sched *sched, struct perf_evsel *evsel, |
1394 | struct perf_sample *sample, struct machine *machine) | |
0ec04e16 | 1395 | { |
9d372ca5 DY |
1396 | const u32 next_pid = perf_evsel__intval(evsel, sample, "next_pid"); |
1397 | struct thread *sched_in; | |
0ec04e16 | 1398 | int new_shortname; |
7f7f8d0b | 1399 | u64 timestamp0, timestamp = sample->time; |
0ec04e16 | 1400 | s64 delta; |
99623c62 JO |
1401 | int i, this_cpu = sample->cpu; |
1402 | int cpus_nr; | |
1403 | bool new_cpu = false; | |
8cd91195 | 1404 | const char *color = PERF_COLOR_NORMAL; |
0ec04e16 IM |
1405 | |
1406 | BUG_ON(this_cpu >= MAX_CPUS || this_cpu < 0); | |
1407 | ||
0e9b07e5 ACM |
1408 | if (this_cpu > sched->max_cpu) |
1409 | sched->max_cpu = this_cpu; | |
0ec04e16 | 1410 | |
99623c62 JO |
1411 | if (sched->map.comp) { |
1412 | cpus_nr = bitmap_weight(sched->map.comp_cpus_mask, MAX_CPUS); | |
1413 | if (!test_and_set_bit(this_cpu, sched->map.comp_cpus_mask)) { | |
1414 | sched->map.comp_cpus[cpus_nr++] = this_cpu; | |
1415 | new_cpu = true; | |
1416 | } | |
1417 | } else | |
1418 | cpus_nr = sched->max_cpu; | |
1419 | ||
0e9b07e5 ACM |
1420 | timestamp0 = sched->cpu_last_switched[this_cpu]; |
1421 | sched->cpu_last_switched[this_cpu] = timestamp; | |
0ec04e16 IM |
1422 | if (timestamp0) |
1423 | delta = timestamp - timestamp0; | |
1424 | else | |
1425 | delta = 0; | |
1426 | ||
a116e05d | 1427 | if (delta < 0) { |
60b7d14a | 1428 | pr_err("hm, delta: %" PRIu64 " < 0 ?\n", delta); |
a116e05d ACM |
1429 | return -1; |
1430 | } | |
0ec04e16 | 1431 | |
a151a37a | 1432 | sched_in = map__findnew_thread(sched, machine, -1, next_pid); |
b91fc39f ACM |
1433 | if (sched_in == NULL) |
1434 | return -1; | |
0ec04e16 | 1435 | |
b91fc39f | 1436 | sched->curr_thread[this_cpu] = thread__get(sched_in); |
0ec04e16 IM |
1437 | |
1438 | printf(" "); | |
1439 | ||
1440 | new_shortname = 0; | |
1441 | if (!sched_in->shortname[0]) { | |
6bcab4e1 D |
1442 | if (!strcmp(thread__comm_str(sched_in), "swapper")) { |
1443 | /* | |
1444 | * Don't allocate a letter-number for swapper:0 | |
1445 | * as a shortname. Instead, we use '.' for it. | |
1446 | */ | |
1447 | sched_in->shortname[0] = '.'; | |
1448 | sched_in->shortname[1] = ' '; | |
0ec04e16 | 1449 | } else { |
6bcab4e1 D |
1450 | sched_in->shortname[0] = sched->next_shortname1; |
1451 | sched_in->shortname[1] = sched->next_shortname2; | |
1452 | ||
1453 | if (sched->next_shortname1 < 'Z') { | |
1454 | sched->next_shortname1++; | |
0ec04e16 | 1455 | } else { |
6bcab4e1 D |
1456 | sched->next_shortname1 = 'A'; |
1457 | if (sched->next_shortname2 < '9') | |
1458 | sched->next_shortname2++; | |
1459 | else | |
1460 | sched->next_shortname2 = '0'; | |
0ec04e16 IM |
1461 | } |
1462 | } | |
1463 | new_shortname = 1; | |
1464 | } | |
1465 | ||
99623c62 JO |
1466 | for (i = 0; i < cpus_nr; i++) { |
1467 | int cpu = sched->map.comp ? sched->map.comp_cpus[i] : i; | |
a151a37a JO |
1468 | struct thread *curr_thread = sched->curr_thread[cpu]; |
1469 | const char *pid_color = color; | |
cf294f24 | 1470 | const char *cpu_color = color; |
a151a37a JO |
1471 | |
1472 | if (curr_thread && thread__has_color(curr_thread)) | |
1473 | pid_color = COLOR_PIDS; | |
99623c62 | 1474 | |
73643bb6 JO |
1475 | if (sched->map.cpus && !cpu_map__has(sched->map.cpus, cpu)) |
1476 | continue; | |
1477 | ||
cf294f24 JO |
1478 | if (sched->map.color_cpus && cpu_map__has(sched->map.color_cpus, cpu)) |
1479 | cpu_color = COLOR_CPUS; | |
1480 | ||
0ec04e16 | 1481 | if (cpu != this_cpu) |
cf294f24 | 1482 | color_fprintf(stdout, cpu_color, " "); |
0ec04e16 | 1483 | else |
cf294f24 | 1484 | color_fprintf(stdout, cpu_color, "*"); |
0ec04e16 | 1485 | |
6bcab4e1 | 1486 | if (sched->curr_thread[cpu]) |
a151a37a | 1487 | color_fprintf(stdout, pid_color, "%2s ", sched->curr_thread[cpu]->shortname); |
6bcab4e1 | 1488 | else |
8cd91195 | 1489 | color_fprintf(stdout, color, " "); |
0ec04e16 IM |
1490 | } |
1491 | ||
73643bb6 JO |
1492 | if (sched->map.cpus && !cpu_map__has(sched->map.cpus, this_cpu)) |
1493 | goto out; | |
1494 | ||
4fc76e49 | 1495 | color_fprintf(stdout, color, " %12.6f secs ", (double)timestamp / NSEC_PER_SEC); |
0ec04e16 | 1496 | if (new_shortname) { |
a151a37a JO |
1497 | const char *pid_color = color; |
1498 | ||
1499 | if (thread__has_color(sched_in)) | |
1500 | pid_color = COLOR_PIDS; | |
1501 | ||
1502 | color_fprintf(stdout, pid_color, "%s => %s:%d", | |
b9c5143a | 1503 | sched_in->shortname, thread__comm_str(sched_in), sched_in->tid); |
0ec04e16 | 1504 | } |
a116e05d | 1505 | |
99623c62 | 1506 | if (sched->map.comp && new_cpu) |
8cd91195 | 1507 | color_fprintf(stdout, color, " (CPU %d)", this_cpu); |
99623c62 | 1508 | |
73643bb6 | 1509 | out: |
8cd91195 | 1510 | color_fprintf(stdout, color, "\n"); |
99623c62 | 1511 | |
b91fc39f ACM |
1512 | thread__put(sched_in); |
1513 | ||
a116e05d | 1514 | return 0; |
0ec04e16 IM |
1515 | } |
1516 | ||
0e9b07e5 | 1517 | static int process_sched_switch_event(struct perf_tool *tool, |
2b7fcbc5 | 1518 | struct perf_evsel *evsel, |
1d037ca1 | 1519 | struct perf_sample *sample, |
4218e673 | 1520 | struct machine *machine) |
419ab0d6 | 1521 | { |
0e9b07e5 | 1522 | struct perf_sched *sched = container_of(tool, struct perf_sched, tool); |
a116e05d | 1523 | int this_cpu = sample->cpu, err = 0; |
2b7fcbc5 ACM |
1524 | u32 prev_pid = perf_evsel__intval(evsel, sample, "prev_pid"), |
1525 | next_pid = perf_evsel__intval(evsel, sample, "next_pid"); | |
419ab0d6 | 1526 | |
0e9b07e5 | 1527 | if (sched->curr_pid[this_cpu] != (u32)-1) { |
c8a37751 IM |
1528 | /* |
1529 | * Are we trying to switch away a PID that is | |
1530 | * not current? | |
1531 | */ | |
2b7fcbc5 | 1532 | if (sched->curr_pid[this_cpu] != prev_pid) |
0e9b07e5 | 1533 | sched->nr_context_switch_bugs++; |
c8a37751 | 1534 | } |
c8a37751 | 1535 | |
9ec3f4e4 ACM |
1536 | if (sched->tp_handler->switch_event) |
1537 | err = sched->tp_handler->switch_event(sched, evsel, sample, machine); | |
2b7fcbc5 ACM |
1538 | |
1539 | sched->curr_pid[this_cpu] = next_pid; | |
a116e05d | 1540 | return err; |
419ab0d6 FW |
1541 | } |
1542 | ||
0e9b07e5 | 1543 | static int process_sched_runtime_event(struct perf_tool *tool, |
2b7fcbc5 | 1544 | struct perf_evsel *evsel, |
1d037ca1 | 1545 | struct perf_sample *sample, |
4218e673 | 1546 | struct machine *machine) |
39aeb52f | 1547 | { |
0e9b07e5 | 1548 | struct perf_sched *sched = container_of(tool, struct perf_sched, tool); |
39aeb52f | 1549 | |
9ec3f4e4 ACM |
1550 | if (sched->tp_handler->runtime_event) |
1551 | return sched->tp_handler->runtime_event(sched, evsel, sample, machine); | |
a116e05d | 1552 | |
2b7fcbc5 | 1553 | return 0; |
39aeb52f | 1554 | } |
1555 | ||
cb627505 DA |
1556 | static int perf_sched__process_fork_event(struct perf_tool *tool, |
1557 | union perf_event *event, | |
1558 | struct perf_sample *sample, | |
1559 | struct machine *machine) | |
fbf94829 | 1560 | { |
0e9b07e5 | 1561 | struct perf_sched *sched = container_of(tool, struct perf_sched, tool); |
46538818 | 1562 | |
cb627505 DA |
1563 | /* run the fork event through the perf machineruy */ |
1564 | perf_event__process_fork(tool, event, sample, machine); | |
1565 | ||
1566 | /* and then run additional processing needed for this command */ | |
9ec3f4e4 | 1567 | if (sched->tp_handler->fork_event) |
cb627505 | 1568 | return sched->tp_handler->fork_event(sched, event, machine); |
a116e05d | 1569 | |
2b7fcbc5 | 1570 | return 0; |
fbf94829 IM |
1571 | } |
1572 | ||
0e9b07e5 | 1573 | static int process_sched_migrate_task_event(struct perf_tool *tool, |
2b7fcbc5 | 1574 | struct perf_evsel *evsel, |
1d037ca1 | 1575 | struct perf_sample *sample, |
4218e673 | 1576 | struct machine *machine) |
55ffb7a6 | 1577 | { |
0e9b07e5 | 1578 | struct perf_sched *sched = container_of(tool, struct perf_sched, tool); |
55ffb7a6 | 1579 | |
9ec3f4e4 ACM |
1580 | if (sched->tp_handler->migrate_task_event) |
1581 | return sched->tp_handler->migrate_task_event(sched, evsel, sample, machine); | |
a116e05d | 1582 | |
2b7fcbc5 | 1583 | return 0; |
55ffb7a6 MG |
1584 | } |
1585 | ||
a116e05d | 1586 | typedef int (*tracepoint_handler)(struct perf_tool *tool, |
2b7fcbc5 | 1587 | struct perf_evsel *evsel, |
a116e05d | 1588 | struct perf_sample *sample, |
4218e673 | 1589 | struct machine *machine); |
ec156764 | 1590 | |
1d037ca1 IT |
1591 | static int perf_sched__process_tracepoint_sample(struct perf_tool *tool __maybe_unused, |
1592 | union perf_event *event __maybe_unused, | |
ee29be62 ACM |
1593 | struct perf_sample *sample, |
1594 | struct perf_evsel *evsel, | |
1595 | struct machine *machine) | |
0a02ad93 | 1596 | { |
a116e05d | 1597 | int err = 0; |
0a02ad93 | 1598 | |
744a9719 ACM |
1599 | if (evsel->handler != NULL) { |
1600 | tracepoint_handler f = evsel->handler; | |
2b7fcbc5 | 1601 | err = f(tool, evsel, sample, machine); |
ee29be62 | 1602 | } |
0a02ad93 | 1603 | |
a116e05d | 1604 | return err; |
0a02ad93 IM |
1605 | } |
1606 | ||
ae536acf | 1607 | static int perf_sched__read_events(struct perf_sched *sched) |
0a02ad93 | 1608 | { |
ee29be62 ACM |
1609 | const struct perf_evsel_str_handler handlers[] = { |
1610 | { "sched:sched_switch", process_sched_switch_event, }, | |
1611 | { "sched:sched_stat_runtime", process_sched_runtime_event, }, | |
1612 | { "sched:sched_wakeup", process_sched_wakeup_event, }, | |
1613 | { "sched:sched_wakeup_new", process_sched_wakeup_event, }, | |
ee29be62 ACM |
1614 | { "sched:sched_migrate_task", process_sched_migrate_task_event, }, |
1615 | }; | |
da378962 | 1616 | struct perf_session *session; |
f5fc1412 JO |
1617 | struct perf_data_file file = { |
1618 | .path = input_name, | |
1619 | .mode = PERF_DATA_MODE_READ, | |
f0dd330f | 1620 | .force = sched->force, |
f5fc1412 | 1621 | }; |
ae536acf | 1622 | int rc = -1; |
da378962 | 1623 | |
f5fc1412 | 1624 | session = perf_session__new(&file, false, &sched->tool); |
a116e05d ACM |
1625 | if (session == NULL) { |
1626 | pr_debug("No Memory for session\n"); | |
1627 | return -1; | |
1628 | } | |
94c744b6 | 1629 | |
0a7e6d1b | 1630 | symbol__init(&session->header.env); |
04934106 | 1631 | |
a116e05d ACM |
1632 | if (perf_session__set_tracepoints_handlers(session, handlers)) |
1633 | goto out_delete; | |
ee29be62 | 1634 | |
cee75ac7 | 1635 | if (perf_session__has_traces(session, "record -R")) { |
b7b61cbe | 1636 | int err = perf_session__process_events(session); |
a116e05d ACM |
1637 | if (err) { |
1638 | pr_err("Failed to process events, error %d", err); | |
1639 | goto out_delete; | |
1640 | } | |
4c09bafa | 1641 | |
75be989a ACM |
1642 | sched->nr_events = session->evlist->stats.nr_events[0]; |
1643 | sched->nr_lost_events = session->evlist->stats.total_lost; | |
1644 | sched->nr_lost_chunks = session->evlist->stats.nr_events[PERF_RECORD_LOST]; | |
cee75ac7 | 1645 | } |
d549c769 | 1646 | |
ae536acf | 1647 | rc = 0; |
a116e05d ACM |
1648 | out_delete: |
1649 | perf_session__delete(session); | |
ae536acf | 1650 | return rc; |
0a02ad93 IM |
1651 | } |
1652 | ||
0e9b07e5 | 1653 | static void print_bad_events(struct perf_sched *sched) |
0ec04e16 | 1654 | { |
0e9b07e5 | 1655 | if (sched->nr_unordered_timestamps && sched->nr_timestamps) { |
0ec04e16 | 1656 | printf(" INFO: %.3f%% unordered timestamps (%ld out of %ld)\n", |
0e9b07e5 ACM |
1657 | (double)sched->nr_unordered_timestamps/(double)sched->nr_timestamps*100.0, |
1658 | sched->nr_unordered_timestamps, sched->nr_timestamps); | |
0ec04e16 | 1659 | } |
0e9b07e5 | 1660 | if (sched->nr_lost_events && sched->nr_events) { |
0ec04e16 | 1661 | printf(" INFO: %.3f%% lost events (%ld out of %ld, in %ld chunks)\n", |
0e9b07e5 ACM |
1662 | (double)sched->nr_lost_events/(double)sched->nr_events * 100.0, |
1663 | sched->nr_lost_events, sched->nr_events, sched->nr_lost_chunks); | |
0ec04e16 | 1664 | } |
0e9b07e5 | 1665 | if (sched->nr_context_switch_bugs && sched->nr_timestamps) { |
0ec04e16 | 1666 | printf(" INFO: %.3f%% context switch bugs (%ld out of %ld)", |
0e9b07e5 ACM |
1667 | (double)sched->nr_context_switch_bugs/(double)sched->nr_timestamps*100.0, |
1668 | sched->nr_context_switch_bugs, sched->nr_timestamps); | |
1669 | if (sched->nr_lost_events) | |
0ec04e16 IM |
1670 | printf(" (due to lost events?)"); |
1671 | printf("\n"); | |
1672 | } | |
1673 | } | |
1674 | ||
2f80dd44 JB |
1675 | static void __merge_work_atoms(struct rb_root *root, struct work_atoms *data) |
1676 | { | |
1677 | struct rb_node **new = &(root->rb_node), *parent = NULL; | |
1678 | struct work_atoms *this; | |
1679 | const char *comm = thread__comm_str(data->thread), *this_comm; | |
1680 | ||
1681 | while (*new) { | |
1682 | int cmp; | |
1683 | ||
1684 | this = container_of(*new, struct work_atoms, node); | |
1685 | parent = *new; | |
1686 | ||
1687 | this_comm = thread__comm_str(this->thread); | |
1688 | cmp = strcmp(comm, this_comm); | |
1689 | if (cmp > 0) { | |
1690 | new = &((*new)->rb_left); | |
1691 | } else if (cmp < 0) { | |
1692 | new = &((*new)->rb_right); | |
1693 | } else { | |
1694 | this->num_merged++; | |
1695 | this->total_runtime += data->total_runtime; | |
1696 | this->nb_atoms += data->nb_atoms; | |
1697 | this->total_lat += data->total_lat; | |
1698 | list_splice(&data->work_list, &this->work_list); | |
1699 | if (this->max_lat < data->max_lat) { | |
1700 | this->max_lat = data->max_lat; | |
1701 | this->max_lat_at = data->max_lat_at; | |
1702 | } | |
1703 | zfree(&data); | |
1704 | return; | |
1705 | } | |
1706 | } | |
1707 | ||
1708 | data->num_merged++; | |
1709 | rb_link_node(&data->node, parent, new); | |
1710 | rb_insert_color(&data->node, root); | |
1711 | } | |
1712 | ||
1713 | static void perf_sched__merge_lat(struct perf_sched *sched) | |
1714 | { | |
1715 | struct work_atoms *data; | |
1716 | struct rb_node *node; | |
1717 | ||
1718 | if (sched->skip_merge) | |
1719 | return; | |
1720 | ||
1721 | while ((node = rb_first(&sched->atom_root))) { | |
1722 | rb_erase(node, &sched->atom_root); | |
1723 | data = rb_entry(node, struct work_atoms, node); | |
1724 | __merge_work_atoms(&sched->merged_atom_root, data); | |
1725 | } | |
1726 | } | |
1727 | ||
0e9b07e5 | 1728 | static int perf_sched__lat(struct perf_sched *sched) |
0ec04e16 IM |
1729 | { |
1730 | struct rb_node *next; | |
1731 | ||
1732 | setup_pager(); | |
ad9def7c | 1733 | |
ae536acf | 1734 | if (perf_sched__read_events(sched)) |
a116e05d | 1735 | return -1; |
ad9def7c | 1736 | |
2f80dd44 | 1737 | perf_sched__merge_lat(sched); |
0e9b07e5 | 1738 | perf_sched__sort_lat(sched); |
0ec04e16 | 1739 | |
80790e0b RR |
1740 | printf("\n -----------------------------------------------------------------------------------------------------------------\n"); |
1741 | printf(" Task | Runtime ms | Switches | Average delay ms | Maximum delay ms | Maximum delay at |\n"); | |
1742 | printf(" -----------------------------------------------------------------------------------------------------------------\n"); | |
0ec04e16 | 1743 | |
0e9b07e5 | 1744 | next = rb_first(&sched->sorted_atom_root); |
0ec04e16 IM |
1745 | |
1746 | while (next) { | |
1747 | struct work_atoms *work_list; | |
1748 | ||
1749 | work_list = rb_entry(next, struct work_atoms, node); | |
0e9b07e5 | 1750 | output_lat_thread(sched, work_list); |
0ec04e16 | 1751 | next = rb_next(next); |
ae536acf | 1752 | thread__zput(work_list->thread); |
0ec04e16 IM |
1753 | } |
1754 | ||
80790e0b | 1755 | printf(" -----------------------------------------------------------------------------------------------------------------\n"); |
9486aa38 | 1756 | printf(" TOTAL: |%11.3f ms |%9" PRIu64 " |\n", |
4fc76e49 | 1757 | (double)sched->all_runtime / NSEC_PER_MSEC, sched->all_count); |
0ec04e16 IM |
1758 | |
1759 | printf(" ---------------------------------------------------\n"); | |
1760 | ||
0e9b07e5 | 1761 | print_bad_events(sched); |
0ec04e16 IM |
1762 | printf("\n"); |
1763 | ||
a116e05d | 1764 | return 0; |
0ec04e16 IM |
1765 | } |
1766 | ||
99623c62 JO |
1767 | static int setup_map_cpus(struct perf_sched *sched) |
1768 | { | |
73643bb6 JO |
1769 | struct cpu_map *map; |
1770 | ||
99623c62 JO |
1771 | sched->max_cpu = sysconf(_SC_NPROCESSORS_CONF); |
1772 | ||
1773 | if (sched->map.comp) { | |
1774 | sched->map.comp_cpus = zalloc(sched->max_cpu * sizeof(int)); | |
cf294f24 JO |
1775 | if (!sched->map.comp_cpus) |
1776 | return -1; | |
99623c62 JO |
1777 | } |
1778 | ||
73643bb6 JO |
1779 | if (!sched->map.cpus_str) |
1780 | return 0; | |
1781 | ||
1782 | map = cpu_map__new(sched->map.cpus_str); | |
1783 | if (!map) { | |
1784 | pr_err("failed to get cpus map from %s\n", sched->map.cpus_str); | |
1785 | return -1; | |
1786 | } | |
1787 | ||
1788 | sched->map.cpus = map; | |
99623c62 JO |
1789 | return 0; |
1790 | } | |
1791 | ||
a151a37a JO |
1792 | static int setup_color_pids(struct perf_sched *sched) |
1793 | { | |
1794 | struct thread_map *map; | |
1795 | ||
1796 | if (!sched->map.color_pids_str) | |
1797 | return 0; | |
1798 | ||
1799 | map = thread_map__new_by_tid_str(sched->map.color_pids_str); | |
1800 | if (!map) { | |
1801 | pr_err("failed to get thread map from %s\n", sched->map.color_pids_str); | |
1802 | return -1; | |
1803 | } | |
1804 | ||
1805 | sched->map.color_pids = map; | |
1806 | return 0; | |
1807 | } | |
1808 | ||
cf294f24 JO |
1809 | static int setup_color_cpus(struct perf_sched *sched) |
1810 | { | |
1811 | struct cpu_map *map; | |
1812 | ||
1813 | if (!sched->map.color_cpus_str) | |
1814 | return 0; | |
1815 | ||
1816 | map = cpu_map__new(sched->map.color_cpus_str); | |
1817 | if (!map) { | |
1818 | pr_err("failed to get thread map from %s\n", sched->map.color_cpus_str); | |
1819 | return -1; | |
1820 | } | |
1821 | ||
1822 | sched->map.color_cpus = map; | |
1823 | return 0; | |
1824 | } | |
1825 | ||
0e9b07e5 | 1826 | static int perf_sched__map(struct perf_sched *sched) |
0ec04e16 | 1827 | { |
99623c62 JO |
1828 | if (setup_map_cpus(sched)) |
1829 | return -1; | |
40749d0f | 1830 | |
a151a37a JO |
1831 | if (setup_color_pids(sched)) |
1832 | return -1; | |
1833 | ||
cf294f24 JO |
1834 | if (setup_color_cpus(sched)) |
1835 | return -1; | |
1836 | ||
0ec04e16 | 1837 | setup_pager(); |
ae536acf | 1838 | if (perf_sched__read_events(sched)) |
a116e05d | 1839 | return -1; |
0e9b07e5 | 1840 | print_bad_events(sched); |
a116e05d | 1841 | return 0; |
0ec04e16 IM |
1842 | } |
1843 | ||
0e9b07e5 | 1844 | static int perf_sched__replay(struct perf_sched *sched) |
0ec04e16 IM |
1845 | { |
1846 | unsigned long i; | |
1847 | ||
0e9b07e5 ACM |
1848 | calibrate_run_measurement_overhead(sched); |
1849 | calibrate_sleep_measurement_overhead(sched); | |
0ec04e16 | 1850 | |
0e9b07e5 | 1851 | test_calibrations(sched); |
0ec04e16 | 1852 | |
ae536acf | 1853 | if (perf_sched__read_events(sched)) |
a116e05d | 1854 | return -1; |
0ec04e16 | 1855 | |
0e9b07e5 ACM |
1856 | printf("nr_run_events: %ld\n", sched->nr_run_events); |
1857 | printf("nr_sleep_events: %ld\n", sched->nr_sleep_events); | |
1858 | printf("nr_wakeup_events: %ld\n", sched->nr_wakeup_events); | |
0ec04e16 | 1859 | |
0e9b07e5 ACM |
1860 | if (sched->targetless_wakeups) |
1861 | printf("target-less wakeups: %ld\n", sched->targetless_wakeups); | |
1862 | if (sched->multitarget_wakeups) | |
1863 | printf("multi-target wakeups: %ld\n", sched->multitarget_wakeups); | |
1864 | if (sched->nr_run_events_optimized) | |
0ec04e16 | 1865 | printf("run atoms optimized: %ld\n", |
0e9b07e5 | 1866 | sched->nr_run_events_optimized); |
0ec04e16 | 1867 | |
0e9b07e5 ACM |
1868 | print_task_traces(sched); |
1869 | add_cross_task_wakeups(sched); | |
0ec04e16 | 1870 | |
0e9b07e5 | 1871 | create_tasks(sched); |
0ec04e16 | 1872 | printf("------------------------------------------------------------\n"); |
0e9b07e5 ACM |
1873 | for (i = 0; i < sched->replay_repeat; i++) |
1874 | run_one_test(sched); | |
a116e05d ACM |
1875 | |
1876 | return 0; | |
0ec04e16 IM |
1877 | } |
1878 | ||
0e9b07e5 ACM |
1879 | static void setup_sorting(struct perf_sched *sched, const struct option *options, |
1880 | const char * const usage_msg[]) | |
daa1d7a5 | 1881 | { |
0e9b07e5 | 1882 | char *tmp, *tok, *str = strdup(sched->sort_order); |
daa1d7a5 FW |
1883 | |
1884 | for (tok = strtok_r(str, ", ", &tmp); | |
1885 | tok; tok = strtok_r(NULL, ", ", &tmp)) { | |
0e9b07e5 | 1886 | if (sort_dimension__add(tok, &sched->sort_list) < 0) { |
c7118369 NK |
1887 | usage_with_options_msg(usage_msg, options, |
1888 | "Unknown --sort key: `%s'", tok); | |
daa1d7a5 FW |
1889 | } |
1890 | } | |
1891 | ||
1892 | free(str); | |
1893 | ||
0e9b07e5 | 1894 | sort_dimension__add("pid", &sched->cmp_pid); |
daa1d7a5 FW |
1895 | } |
1896 | ||
1fc35b29 IM |
1897 | static int __cmd_record(int argc, const char **argv) |
1898 | { | |
1899 | unsigned int rec_argc, i, j; | |
1900 | const char **rec_argv; | |
0e9b07e5 ACM |
1901 | const char * const record_args[] = { |
1902 | "record", | |
1903 | "-a", | |
1904 | "-R", | |
0e9b07e5 ACM |
1905 | "-m", "1024", |
1906 | "-c", "1", | |
1907 | "-e", "sched:sched_switch", | |
1908 | "-e", "sched:sched_stat_wait", | |
1909 | "-e", "sched:sched_stat_sleep", | |
1910 | "-e", "sched:sched_stat_iowait", | |
1911 | "-e", "sched:sched_stat_runtime", | |
0e9b07e5 ACM |
1912 | "-e", "sched:sched_process_fork", |
1913 | "-e", "sched:sched_wakeup", | |
7fff9597 | 1914 | "-e", "sched:sched_wakeup_new", |
0e9b07e5 ACM |
1915 | "-e", "sched:sched_migrate_task", |
1916 | }; | |
1fc35b29 IM |
1917 | |
1918 | rec_argc = ARRAY_SIZE(record_args) + argc - 1; | |
1919 | rec_argv = calloc(rec_argc + 1, sizeof(char *)); | |
1920 | ||
e462dc55 | 1921 | if (rec_argv == NULL) |
ce47dc56 CS |
1922 | return -ENOMEM; |
1923 | ||
1fc35b29 IM |
1924 | for (i = 0; i < ARRAY_SIZE(record_args); i++) |
1925 | rec_argv[i] = strdup(record_args[i]); | |
1926 | ||
1927 | for (j = 1; j < (unsigned int)argc; j++, i++) | |
1928 | rec_argv[i] = argv[j]; | |
1929 | ||
1930 | BUG_ON(i != rec_argc); | |
1931 | ||
1932 | return cmd_record(i, rec_argv, NULL); | |
1933 | } | |
1934 | ||
1d037ca1 | 1935 | int cmd_sched(int argc, const char **argv, const char *prefix __maybe_unused) |
0a02ad93 | 1936 | { |
8a39df8f AH |
1937 | const char default_sort_order[] = "avg, max, switch, runtime"; |
1938 | struct perf_sched sched = { | |
1939 | .tool = { | |
1940 | .sample = perf_sched__process_tracepoint_sample, | |
1941 | .comm = perf_event__process_comm, | |
1942 | .lost = perf_event__process_lost, | |
1943 | .fork = perf_sched__process_fork_event, | |
0a8cb85c | 1944 | .ordered_events = true, |
8a39df8f AH |
1945 | }, |
1946 | .cmp_pid = LIST_HEAD_INIT(sched.cmp_pid), | |
1947 | .sort_list = LIST_HEAD_INIT(sched.sort_list), | |
1948 | .start_work_mutex = PTHREAD_MUTEX_INITIALIZER, | |
1949 | .work_done_wait_mutex = PTHREAD_MUTEX_INITIALIZER, | |
8a39df8f AH |
1950 | .sort_order = default_sort_order, |
1951 | .replay_repeat = 10, | |
1952 | .profile_cpu = -1, | |
1953 | .next_shortname1 = 'A', | |
1954 | .next_shortname2 = '0', | |
2f80dd44 | 1955 | .skip_merge = 0, |
8a39df8f | 1956 | }; |
0e9b07e5 ACM |
1957 | const struct option latency_options[] = { |
1958 | OPT_STRING('s', "sort", &sched.sort_order, "key[,key2...]", | |
1959 | "sort by key(s): runtime, switch, avg, max"), | |
1960 | OPT_INCR('v', "verbose", &verbose, | |
1961 | "be more verbose (show symbol address, etc)"), | |
1962 | OPT_INTEGER('C', "CPU", &sched.profile_cpu, | |
1963 | "CPU to profile on"), | |
1964 | OPT_BOOLEAN('D', "dump-raw-trace", &dump_trace, | |
1965 | "dump raw trace in ASCII"), | |
2f80dd44 JB |
1966 | OPT_BOOLEAN('p', "pids", &sched.skip_merge, |
1967 | "latency stats per pid instead of per comm"), | |
0e9b07e5 ACM |
1968 | OPT_END() |
1969 | }; | |
1970 | const struct option replay_options[] = { | |
1971 | OPT_UINTEGER('r', "repeat", &sched.replay_repeat, | |
1972 | "repeat the workload replay N times (-1: infinite)"), | |
1973 | OPT_INCR('v', "verbose", &verbose, | |
1974 | "be more verbose (show symbol address, etc)"), | |
1975 | OPT_BOOLEAN('D', "dump-raw-trace", &dump_trace, | |
1976 | "dump raw trace in ASCII"), | |
939cda52 | 1977 | OPT_BOOLEAN('f', "force", &sched.force, "don't complain, do it"), |
0e9b07e5 ACM |
1978 | OPT_END() |
1979 | }; | |
1980 | const struct option sched_options[] = { | |
70cb4e96 | 1981 | OPT_STRING('i', "input", &input_name, "file", |
0e9b07e5 ACM |
1982 | "input file name"), |
1983 | OPT_INCR('v', "verbose", &verbose, | |
1984 | "be more verbose (show symbol address, etc)"), | |
1985 | OPT_BOOLEAN('D', "dump-raw-trace", &dump_trace, | |
1986 | "dump raw trace in ASCII"), | |
1987 | OPT_END() | |
1988 | }; | |
99623c62 JO |
1989 | const struct option map_options[] = { |
1990 | OPT_BOOLEAN(0, "compact", &sched.map.comp, | |
1991 | "map output in compact mode"), | |
a151a37a JO |
1992 | OPT_STRING(0, "color-pids", &sched.map.color_pids_str, "pids", |
1993 | "highlight given pids in map"), | |
cf294f24 JO |
1994 | OPT_STRING(0, "color-cpus", &sched.map.color_cpus_str, "cpus", |
1995 | "highlight given CPUs in map"), | |
73643bb6 JO |
1996 | OPT_STRING(0, "cpus", &sched.map.cpus_str, "cpus", |
1997 | "display given CPUs in map"), | |
99623c62 JO |
1998 | OPT_END() |
1999 | }; | |
0e9b07e5 ACM |
2000 | const char * const latency_usage[] = { |
2001 | "perf sched latency [<options>]", | |
2002 | NULL | |
2003 | }; | |
2004 | const char * const replay_usage[] = { | |
2005 | "perf sched replay [<options>]", | |
2006 | NULL | |
2007 | }; | |
99623c62 JO |
2008 | const char * const map_usage[] = { |
2009 | "perf sched map [<options>]", | |
2010 | NULL | |
2011 | }; | |
a83edb2d RR |
2012 | const char *const sched_subcommands[] = { "record", "latency", "map", |
2013 | "replay", "script", NULL }; | |
2014 | const char *sched_usage[] = { | |
2015 | NULL, | |
0e9b07e5 ACM |
2016 | NULL |
2017 | }; | |
2018 | struct trace_sched_handler lat_ops = { | |
2019 | .wakeup_event = latency_wakeup_event, | |
2020 | .switch_event = latency_switch_event, | |
2021 | .runtime_event = latency_runtime_event, | |
0e9b07e5 ACM |
2022 | .migrate_task_event = latency_migrate_task_event, |
2023 | }; | |
2024 | struct trace_sched_handler map_ops = { | |
2025 | .switch_event = map_switch_event, | |
2026 | }; | |
2027 | struct trace_sched_handler replay_ops = { | |
2028 | .wakeup_event = replay_wakeup_event, | |
2029 | .switch_event = replay_switch_event, | |
2030 | .fork_event = replay_fork_event, | |
2031 | }; | |
156a2b02 AH |
2032 | unsigned int i; |
2033 | ||
2034 | for (i = 0; i < ARRAY_SIZE(sched.curr_pid); i++) | |
2035 | sched.curr_pid[i] = -1; | |
0e9b07e5 | 2036 | |
a83edb2d RR |
2037 | argc = parse_options_subcommand(argc, argv, sched_options, sched_subcommands, |
2038 | sched_usage, PARSE_OPT_STOP_AT_NON_OPTION); | |
f2858d8a IM |
2039 | if (!argc) |
2040 | usage_with_options(sched_usage, sched_options); | |
0a02ad93 | 2041 | |
c0777c5a | 2042 | /* |
133dc4c3 | 2043 | * Aliased to 'perf script' for now: |
c0777c5a | 2044 | */ |
133dc4c3 IM |
2045 | if (!strcmp(argv[0], "script")) |
2046 | return cmd_script(argc, argv, prefix); | |
c0777c5a | 2047 | |
1fc35b29 IM |
2048 | if (!strncmp(argv[0], "rec", 3)) { |
2049 | return __cmd_record(argc, argv); | |
2050 | } else if (!strncmp(argv[0], "lat", 3)) { | |
0e9b07e5 | 2051 | sched.tp_handler = &lat_ops; |
f2858d8a IM |
2052 | if (argc > 1) { |
2053 | argc = parse_options(argc, argv, latency_options, latency_usage, 0); | |
2054 | if (argc) | |
2055 | usage_with_options(latency_usage, latency_options); | |
f2858d8a | 2056 | } |
0e9b07e5 ACM |
2057 | setup_sorting(&sched, latency_options, latency_usage); |
2058 | return perf_sched__lat(&sched); | |
0ec04e16 | 2059 | } else if (!strcmp(argv[0], "map")) { |
99623c62 | 2060 | if (argc) { |
a151a37a | 2061 | argc = parse_options(argc, argv, map_options, map_usage, 0); |
99623c62 JO |
2062 | if (argc) |
2063 | usage_with_options(map_usage, map_options); | |
2064 | } | |
0e9b07e5 ACM |
2065 | sched.tp_handler = &map_ops; |
2066 | setup_sorting(&sched, latency_options, latency_usage); | |
2067 | return perf_sched__map(&sched); | |
f2858d8a | 2068 | } else if (!strncmp(argv[0], "rep", 3)) { |
0e9b07e5 | 2069 | sched.tp_handler = &replay_ops; |
f2858d8a IM |
2070 | if (argc) { |
2071 | argc = parse_options(argc, argv, replay_options, replay_usage, 0); | |
2072 | if (argc) | |
2073 | usage_with_options(replay_usage, replay_options); | |
2074 | } | |
0e9b07e5 | 2075 | return perf_sched__replay(&sched); |
f2858d8a IM |
2076 | } else { |
2077 | usage_with_options(sched_usage, sched_options); | |
2078 | } | |
2079 | ||
ec156764 | 2080 | return 0; |
0a02ad93 | 2081 | } |