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b2441318 | 1 | // SPDX-License-Identifier: GPL-2.0 |
0a02ad93 | 2 | #include "builtin.h" |
b1ffe8f3 | 3 | #include "perf.h" |
0a02ad93 IM |
4 | |
5 | #include "util/util.h" | |
ee29be62 | 6 | #include "util/evlist.h" |
0a02ad93 | 7 | #include "util/cache.h" |
e3f42609 | 8 | #include "util/evsel.h" |
0a02ad93 IM |
9 | #include "util/symbol.h" |
10 | #include "util/thread.h" | |
11 | #include "util/header.h" | |
94c744b6 | 12 | #include "util/session.h" |
45694aa7 | 13 | #include "util/tool.h" |
57480d2c | 14 | #include "util/cloexec.h" |
a151a37a | 15 | #include "util/thread_map.h" |
8cd91195 | 16 | #include "util/color.h" |
49394a2a | 17 | #include "util/stat.h" |
6c973c90 | 18 | #include "util/callchain.h" |
853b7407 | 19 | #include "util/time-utils.h" |
0a02ad93 | 20 | |
4b6ab94e | 21 | #include <subcmd/parse-options.h> |
b1ffe8f3 | 22 | #include "util/trace-event.h" |
0a02ad93 | 23 | |
0a02ad93 IM |
24 | #include "util/debug.h" |
25 | ||
877a7a11 | 26 | #include <linux/kernel.h> |
49394a2a | 27 | #include <linux/log2.h> |
b1ffe8f3 | 28 | #include <sys/prctl.h> |
7b78f136 | 29 | #include <sys/resource.h> |
fd20e811 | 30 | #include <inttypes.h> |
0a02ad93 | 31 | |
a43783ae | 32 | #include <errno.h> |
b1ffe8f3 IM |
33 | #include <semaphore.h> |
34 | #include <pthread.h> | |
35 | #include <math.h> | |
cb06ac25 | 36 | #include <api/fs/fs.h> |
4fc76e49 | 37 | #include <linux/time64.h> |
419ab0d6 | 38 | |
3d689ed6 ACM |
39 | #include "sane_ctype.h" |
40 | ||
b1ffe8f3 IM |
41 | #define PR_SET_NAME 15 /* Set process name */ |
42 | #define MAX_CPUS 4096 | |
b1ffe8f3 IM |
43 | #define COMM_LEN 20 |
44 | #define SYM_LEN 129 | |
a35e27d0 | 45 | #define MAX_PID 1024000 |
ec156764 | 46 | |
39aeb52f | 47 | struct sched_atom; |
ec156764 | 48 | |
b1ffe8f3 IM |
49 | struct task_desc { |
50 | unsigned long nr; | |
51 | unsigned long pid; | |
52 | char comm[COMM_LEN]; | |
ec156764 | 53 | |
b1ffe8f3 IM |
54 | unsigned long nr_events; |
55 | unsigned long curr_event; | |
39aeb52f | 56 | struct sched_atom **atoms; |
b1ffe8f3 IM |
57 | |
58 | pthread_t thread; | |
59 | sem_t sleep_sem; | |
ec156764 | 60 | |
b1ffe8f3 IM |
61 | sem_t ready_for_work; |
62 | sem_t work_done_sem; | |
63 | ||
64 | u64 cpu_usage; | |
65 | }; | |
66 | ||
67 | enum sched_event_type { | |
68 | SCHED_EVENT_RUN, | |
69 | SCHED_EVENT_SLEEP, | |
70 | SCHED_EVENT_WAKEUP, | |
55ffb7a6 | 71 | SCHED_EVENT_MIGRATION, |
b1ffe8f3 IM |
72 | }; |
73 | ||
39aeb52f | 74 | struct sched_atom { |
b1ffe8f3 | 75 | enum sched_event_type type; |
eed05fe7 | 76 | int specific_wait; |
b1ffe8f3 IM |
77 | u64 timestamp; |
78 | u64 duration; | |
79 | unsigned long nr; | |
b1ffe8f3 IM |
80 | sem_t *wait_sem; |
81 | struct task_desc *wakee; | |
82 | }; | |
83 | ||
e936e8e4 | 84 | #define TASK_STATE_TO_CHAR_STR "RSDTtZXxKWP" |
b1ffe8f3 | 85 | |
941bdea7 NK |
86 | /* task state bitmask, copied from include/linux/sched.h */ |
87 | #define TASK_RUNNING 0 | |
88 | #define TASK_INTERRUPTIBLE 1 | |
89 | #define TASK_UNINTERRUPTIBLE 2 | |
90 | #define __TASK_STOPPED 4 | |
91 | #define __TASK_TRACED 8 | |
92 | /* in tsk->exit_state */ | |
93 | #define EXIT_DEAD 16 | |
94 | #define EXIT_ZOMBIE 32 | |
95 | #define EXIT_TRACE (EXIT_ZOMBIE | EXIT_DEAD) | |
96 | /* in tsk->state again */ | |
97 | #define TASK_DEAD 64 | |
98 | #define TASK_WAKEKILL 128 | |
99 | #define TASK_WAKING 256 | |
100 | #define TASK_PARKED 512 | |
101 | ||
b1ffe8f3 IM |
102 | enum thread_state { |
103 | THREAD_SLEEPING = 0, | |
104 | THREAD_WAIT_CPU, | |
105 | THREAD_SCHED_IN, | |
106 | THREAD_IGNORE | |
107 | }; | |
108 | ||
109 | struct work_atom { | |
110 | struct list_head list; | |
111 | enum thread_state state; | |
aa1ab9d2 | 112 | u64 sched_out_time; |
b1ffe8f3 IM |
113 | u64 wake_up_time; |
114 | u64 sched_in_time; | |
115 | u64 runtime; | |
116 | }; | |
117 | ||
39aeb52f | 118 | struct work_atoms { |
119 | struct list_head work_list; | |
b1ffe8f3 IM |
120 | struct thread *thread; |
121 | struct rb_node node; | |
122 | u64 max_lat; | |
3786310a | 123 | u64 max_lat_at; |
b1ffe8f3 IM |
124 | u64 total_lat; |
125 | u64 nb_atoms; | |
126 | u64 total_runtime; | |
2f80dd44 | 127 | int num_merged; |
b1ffe8f3 IM |
128 | }; |
129 | ||
39aeb52f | 130 | typedef int (*sort_fn_t)(struct work_atoms *, struct work_atoms *); |
b1ffe8f3 | 131 | |
9ec3f4e4 | 132 | struct perf_sched; |
0e9b07e5 | 133 | |
9ec3f4e4 ACM |
134 | struct trace_sched_handler { |
135 | int (*switch_event)(struct perf_sched *sched, struct perf_evsel *evsel, | |
136 | struct perf_sample *sample, struct machine *machine); | |
0e9b07e5 | 137 | |
9ec3f4e4 ACM |
138 | int (*runtime_event)(struct perf_sched *sched, struct perf_evsel *evsel, |
139 | struct perf_sample *sample, struct machine *machine); | |
0e9b07e5 | 140 | |
9ec3f4e4 ACM |
141 | int (*wakeup_event)(struct perf_sched *sched, struct perf_evsel *evsel, |
142 | struct perf_sample *sample, struct machine *machine); | |
0e9b07e5 | 143 | |
cb627505 DA |
144 | /* PERF_RECORD_FORK event, not sched_process_fork tracepoint */ |
145 | int (*fork_event)(struct perf_sched *sched, union perf_event *event, | |
146 | struct machine *machine); | |
0e9b07e5 ACM |
147 | |
148 | int (*migrate_task_event)(struct perf_sched *sched, | |
9ec3f4e4 ACM |
149 | struct perf_evsel *evsel, |
150 | struct perf_sample *sample, | |
151 | struct machine *machine); | |
0e9b07e5 ACM |
152 | }; |
153 | ||
a151a37a | 154 | #define COLOR_PIDS PERF_COLOR_BLUE |
cf294f24 | 155 | #define COLOR_CPUS PERF_COLOR_BG_RED |
a151a37a | 156 | |
99623c62 JO |
157 | struct perf_sched_map { |
158 | DECLARE_BITMAP(comp_cpus_mask, MAX_CPUS); | |
159 | int *comp_cpus; | |
160 | bool comp; | |
a151a37a JO |
161 | struct thread_map *color_pids; |
162 | const char *color_pids_str; | |
cf294f24 JO |
163 | struct cpu_map *color_cpus; |
164 | const char *color_cpus_str; | |
73643bb6 JO |
165 | struct cpu_map *cpus; |
166 | const char *cpus_str; | |
99623c62 JO |
167 | }; |
168 | ||
0e9b07e5 ACM |
169 | struct perf_sched { |
170 | struct perf_tool tool; | |
0e9b07e5 ACM |
171 | const char *sort_order; |
172 | unsigned long nr_tasks; | |
cb06ac25 | 173 | struct task_desc **pid_to_task; |
0e9b07e5 ACM |
174 | struct task_desc **tasks; |
175 | const struct trace_sched_handler *tp_handler; | |
176 | pthread_mutex_t start_work_mutex; | |
177 | pthread_mutex_t work_done_wait_mutex; | |
178 | int profile_cpu; | |
179 | /* | |
180 | * Track the current task - that way we can know whether there's any | |
181 | * weird events, such as a task being switched away that is not current. | |
182 | */ | |
183 | int max_cpu; | |
184 | u32 curr_pid[MAX_CPUS]; | |
185 | struct thread *curr_thread[MAX_CPUS]; | |
186 | char next_shortname1; | |
187 | char next_shortname2; | |
188 | unsigned int replay_repeat; | |
189 | unsigned long nr_run_events; | |
190 | unsigned long nr_sleep_events; | |
191 | unsigned long nr_wakeup_events; | |
192 | unsigned long nr_sleep_corrections; | |
193 | unsigned long nr_run_events_optimized; | |
194 | unsigned long targetless_wakeups; | |
195 | unsigned long multitarget_wakeups; | |
196 | unsigned long nr_runs; | |
197 | unsigned long nr_timestamps; | |
198 | unsigned long nr_unordered_timestamps; | |
0e9b07e5 ACM |
199 | unsigned long nr_context_switch_bugs; |
200 | unsigned long nr_events; | |
201 | unsigned long nr_lost_chunks; | |
202 | unsigned long nr_lost_events; | |
203 | u64 run_measurement_overhead; | |
204 | u64 sleep_measurement_overhead; | |
205 | u64 start_time; | |
206 | u64 cpu_usage; | |
207 | u64 runavg_cpu_usage; | |
208 | u64 parent_cpu_usage; | |
209 | u64 runavg_parent_cpu_usage; | |
210 | u64 sum_runtime; | |
211 | u64 sum_fluct; | |
212 | u64 run_avg; | |
213 | u64 all_runtime; | |
214 | u64 all_count; | |
215 | u64 cpu_last_switched[MAX_CPUS]; | |
2f80dd44 | 216 | struct rb_root atom_root, sorted_atom_root, merged_atom_root; |
0e9b07e5 | 217 | struct list_head sort_list, cmp_pid; |
939cda52 | 218 | bool force; |
2f80dd44 | 219 | bool skip_merge; |
99623c62 | 220 | struct perf_sched_map map; |
52df138c DA |
221 | |
222 | /* options for timehist command */ | |
223 | bool summary; | |
224 | bool summary_only; | |
699b5b92 | 225 | bool idle_hist; |
6c973c90 DA |
226 | bool show_callchain; |
227 | unsigned int max_stack; | |
a407b067 | 228 | bool show_cpu_visual; |
fc1469f1 | 229 | bool show_wakeups; |
292c4a8f | 230 | bool show_next; |
350f54fa | 231 | bool show_migrations; |
414e050c | 232 | bool show_state; |
52df138c | 233 | u64 skipped_samples; |
853b7407 DA |
234 | const char *time_str; |
235 | struct perf_time_interval ptime; | |
9396c9cb | 236 | struct perf_time_interval hist_time; |
0e9b07e5 | 237 | }; |
b1ffe8f3 | 238 | |
49394a2a DA |
239 | /* per thread run time data */ |
240 | struct thread_runtime { | |
241 | u64 last_time; /* time of previous sched in/out event */ | |
242 | u64 dt_run; /* run time */ | |
941bdea7 NK |
243 | u64 dt_sleep; /* time between CPU access by sleep (off cpu) */ |
244 | u64 dt_iowait; /* time between CPU access by iowait (off cpu) */ | |
245 | u64 dt_preempt; /* time between CPU access by preempt (off cpu) */ | |
49394a2a DA |
246 | u64 dt_delay; /* time between wakeup and sched-in */ |
247 | u64 ready_to_run; /* time of wakeup */ | |
248 | ||
249 | struct stats run_stats; | |
250 | u64 total_run_time; | |
587782c5 NK |
251 | u64 total_sleep_time; |
252 | u64 total_iowait_time; | |
253 | u64 total_preempt_time; | |
254 | u64 total_delay_time; | |
350f54fa | 255 | |
941bdea7 | 256 | int last_state; |
350f54fa | 257 | u64 migrations; |
49394a2a DA |
258 | }; |
259 | ||
260 | /* per event run time data */ | |
261 | struct evsel_runtime { | |
262 | u64 *last_time; /* time this event was last seen per cpu */ | |
263 | u32 ncpu; /* highest cpu slot allocated */ | |
264 | }; | |
265 | ||
3bc2fa9c NK |
266 | /* per cpu idle time data */ |
267 | struct idle_thread_runtime { | |
268 | struct thread_runtime tr; | |
269 | struct thread *last_thread; | |
270 | struct rb_root sorted_root; | |
271 | struct callchain_root callchain; | |
272 | struct callchain_cursor cursor; | |
273 | }; | |
274 | ||
49394a2a DA |
275 | /* track idle times per cpu */ |
276 | static struct thread **idle_threads; | |
277 | static int idle_max_cpu; | |
278 | static char idle_comm[] = "<idle>"; | |
279 | ||
b1ffe8f3 | 280 | static u64 get_nsecs(void) |
ec156764 IM |
281 | { |
282 | struct timespec ts; | |
283 | ||
284 | clock_gettime(CLOCK_MONOTONIC, &ts); | |
285 | ||
4fc76e49 | 286 | return ts.tv_sec * NSEC_PER_SEC + ts.tv_nsec; |
ec156764 IM |
287 | } |
288 | ||
0e9b07e5 | 289 | static void burn_nsecs(struct perf_sched *sched, u64 nsecs) |
ec156764 | 290 | { |
b1ffe8f3 | 291 | u64 T0 = get_nsecs(), T1; |
ec156764 IM |
292 | |
293 | do { | |
294 | T1 = get_nsecs(); | |
0e9b07e5 | 295 | } while (T1 + sched->run_measurement_overhead < T0 + nsecs); |
ec156764 IM |
296 | } |
297 | ||
b1ffe8f3 | 298 | static void sleep_nsecs(u64 nsecs) |
ec156764 IM |
299 | { |
300 | struct timespec ts; | |
301 | ||
302 | ts.tv_nsec = nsecs % 999999999; | |
303 | ts.tv_sec = nsecs / 999999999; | |
304 | ||
305 | nanosleep(&ts, NULL); | |
306 | } | |
307 | ||
0e9b07e5 | 308 | static void calibrate_run_measurement_overhead(struct perf_sched *sched) |
ec156764 | 309 | { |
4fc76e49 | 310 | u64 T0, T1, delta, min_delta = NSEC_PER_SEC; |
ec156764 IM |
311 | int i; |
312 | ||
313 | for (i = 0; i < 10; i++) { | |
314 | T0 = get_nsecs(); | |
0e9b07e5 | 315 | burn_nsecs(sched, 0); |
ec156764 IM |
316 | T1 = get_nsecs(); |
317 | delta = T1-T0; | |
318 | min_delta = min(min_delta, delta); | |
319 | } | |
0e9b07e5 | 320 | sched->run_measurement_overhead = min_delta; |
ec156764 | 321 | |
9486aa38 | 322 | printf("run measurement overhead: %" PRIu64 " nsecs\n", min_delta); |
ec156764 IM |
323 | } |
324 | ||
0e9b07e5 | 325 | static void calibrate_sleep_measurement_overhead(struct perf_sched *sched) |
ec156764 | 326 | { |
4fc76e49 | 327 | u64 T0, T1, delta, min_delta = NSEC_PER_SEC; |
ec156764 IM |
328 | int i; |
329 | ||
330 | for (i = 0; i < 10; i++) { | |
331 | T0 = get_nsecs(); | |
332 | sleep_nsecs(10000); | |
333 | T1 = get_nsecs(); | |
334 | delta = T1-T0; | |
335 | min_delta = min(min_delta, delta); | |
336 | } | |
337 | min_delta -= 10000; | |
0e9b07e5 | 338 | sched->sleep_measurement_overhead = min_delta; |
ec156764 | 339 | |
9486aa38 | 340 | printf("sleep measurement overhead: %" PRIu64 " nsecs\n", min_delta); |
ec156764 IM |
341 | } |
342 | ||
39aeb52f | 343 | static struct sched_atom * |
b1ffe8f3 | 344 | get_new_event(struct task_desc *task, u64 timestamp) |
ec156764 | 345 | { |
36479484 | 346 | struct sched_atom *event = zalloc(sizeof(*event)); |
ec156764 IM |
347 | unsigned long idx = task->nr_events; |
348 | size_t size; | |
349 | ||
350 | event->timestamp = timestamp; | |
351 | event->nr = idx; | |
352 | ||
353 | task->nr_events++; | |
39aeb52f | 354 | size = sizeof(struct sched_atom *) * task->nr_events; |
355 | task->atoms = realloc(task->atoms, size); | |
356 | BUG_ON(!task->atoms); | |
ec156764 | 357 | |
39aeb52f | 358 | task->atoms[idx] = event; |
ec156764 IM |
359 | |
360 | return event; | |
361 | } | |
362 | ||
39aeb52f | 363 | static struct sched_atom *last_event(struct task_desc *task) |
ec156764 IM |
364 | { |
365 | if (!task->nr_events) | |
366 | return NULL; | |
367 | ||
39aeb52f | 368 | return task->atoms[task->nr_events - 1]; |
ec156764 IM |
369 | } |
370 | ||
0e9b07e5 ACM |
371 | static void add_sched_event_run(struct perf_sched *sched, struct task_desc *task, |
372 | u64 timestamp, u64 duration) | |
ec156764 | 373 | { |
39aeb52f | 374 | struct sched_atom *event, *curr_event = last_event(task); |
ec156764 IM |
375 | |
376 | /* | |
fbf94829 IM |
377 | * optimize an existing RUN event by merging this one |
378 | * to it: | |
379 | */ | |
ec156764 | 380 | if (curr_event && curr_event->type == SCHED_EVENT_RUN) { |
0e9b07e5 | 381 | sched->nr_run_events_optimized++; |
ec156764 IM |
382 | curr_event->duration += duration; |
383 | return; | |
384 | } | |
385 | ||
386 | event = get_new_event(task, timestamp); | |
387 | ||
388 | event->type = SCHED_EVENT_RUN; | |
389 | event->duration = duration; | |
390 | ||
0e9b07e5 | 391 | sched->nr_run_events++; |
ec156764 IM |
392 | } |
393 | ||
0e9b07e5 ACM |
394 | static void add_sched_event_wakeup(struct perf_sched *sched, struct task_desc *task, |
395 | u64 timestamp, struct task_desc *wakee) | |
ec156764 | 396 | { |
39aeb52f | 397 | struct sched_atom *event, *wakee_event; |
ec156764 IM |
398 | |
399 | event = get_new_event(task, timestamp); | |
400 | event->type = SCHED_EVENT_WAKEUP; | |
401 | event->wakee = wakee; | |
402 | ||
403 | wakee_event = last_event(wakee); | |
404 | if (!wakee_event || wakee_event->type != SCHED_EVENT_SLEEP) { | |
0e9b07e5 | 405 | sched->targetless_wakeups++; |
ec156764 IM |
406 | return; |
407 | } | |
408 | if (wakee_event->wait_sem) { | |
0e9b07e5 | 409 | sched->multitarget_wakeups++; |
ec156764 IM |
410 | return; |
411 | } | |
412 | ||
36479484 | 413 | wakee_event->wait_sem = zalloc(sizeof(*wakee_event->wait_sem)); |
ec156764 IM |
414 | sem_init(wakee_event->wait_sem, 0, 0); |
415 | wakee_event->specific_wait = 1; | |
416 | event->wait_sem = wakee_event->wait_sem; | |
417 | ||
0e9b07e5 | 418 | sched->nr_wakeup_events++; |
ec156764 IM |
419 | } |
420 | ||
0e9b07e5 ACM |
421 | static void add_sched_event_sleep(struct perf_sched *sched, struct task_desc *task, |
422 | u64 timestamp, u64 task_state __maybe_unused) | |
ec156764 | 423 | { |
39aeb52f | 424 | struct sched_atom *event = get_new_event(task, timestamp); |
ec156764 IM |
425 | |
426 | event->type = SCHED_EVENT_SLEEP; | |
427 | ||
0e9b07e5 | 428 | sched->nr_sleep_events++; |
ec156764 IM |
429 | } |
430 | ||
0e9b07e5 ACM |
431 | static struct task_desc *register_pid(struct perf_sched *sched, |
432 | unsigned long pid, const char *comm) | |
ec156764 IM |
433 | { |
434 | struct task_desc *task; | |
cb06ac25 | 435 | static int pid_max; |
ec156764 | 436 | |
cb06ac25 YS |
437 | if (sched->pid_to_task == NULL) { |
438 | if (sysctl__read_int("kernel/pid_max", &pid_max) < 0) | |
439 | pid_max = MAX_PID; | |
440 | BUG_ON((sched->pid_to_task = calloc(pid_max, sizeof(struct task_desc *))) == NULL); | |
441 | } | |
3a423a5c YS |
442 | if (pid >= (unsigned long)pid_max) { |
443 | BUG_ON((sched->pid_to_task = realloc(sched->pid_to_task, (pid + 1) * | |
444 | sizeof(struct task_desc *))) == NULL); | |
445 | while (pid >= (unsigned long)pid_max) | |
446 | sched->pid_to_task[pid_max++] = NULL; | |
447 | } | |
ec156764 | 448 | |
0e9b07e5 | 449 | task = sched->pid_to_task[pid]; |
ec156764 IM |
450 | |
451 | if (task) | |
452 | return task; | |
453 | ||
36479484 | 454 | task = zalloc(sizeof(*task)); |
ec156764 | 455 | task->pid = pid; |
0e9b07e5 | 456 | task->nr = sched->nr_tasks; |
ec156764 IM |
457 | strcpy(task->comm, comm); |
458 | /* | |
459 | * every task starts in sleeping state - this gets ignored | |
460 | * if there's no wakeup pointing to this sleep state: | |
461 | */ | |
0e9b07e5 | 462 | add_sched_event_sleep(sched, task, 0, 0); |
ec156764 | 463 | |
0e9b07e5 ACM |
464 | sched->pid_to_task[pid] = task; |
465 | sched->nr_tasks++; | |
0755bc4d | 466 | sched->tasks = realloc(sched->tasks, sched->nr_tasks * sizeof(struct task_desc *)); |
0e9b07e5 ACM |
467 | BUG_ON(!sched->tasks); |
468 | sched->tasks[task->nr] = task; | |
ec156764 | 469 | |
bb963e16 | 470 | if (verbose > 0) |
0e9b07e5 | 471 | printf("registered task #%ld, PID %ld (%s)\n", sched->nr_tasks, pid, comm); |
ec156764 IM |
472 | |
473 | return task; | |
474 | } | |
475 | ||
476 | ||
0e9b07e5 | 477 | static void print_task_traces(struct perf_sched *sched) |
ec156764 IM |
478 | { |
479 | struct task_desc *task; | |
480 | unsigned long i; | |
481 | ||
0e9b07e5 ACM |
482 | for (i = 0; i < sched->nr_tasks; i++) { |
483 | task = sched->tasks[i]; | |
ad236fd2 | 484 | printf("task %6ld (%20s:%10ld), nr_events: %ld\n", |
ec156764 IM |
485 | task->nr, task->comm, task->pid, task->nr_events); |
486 | } | |
487 | } | |
488 | ||
0e9b07e5 | 489 | static void add_cross_task_wakeups(struct perf_sched *sched) |
ec156764 IM |
490 | { |
491 | struct task_desc *task1, *task2; | |
492 | unsigned long i, j; | |
493 | ||
0e9b07e5 ACM |
494 | for (i = 0; i < sched->nr_tasks; i++) { |
495 | task1 = sched->tasks[i]; | |
ec156764 | 496 | j = i + 1; |
0e9b07e5 | 497 | if (j == sched->nr_tasks) |
ec156764 | 498 | j = 0; |
0e9b07e5 ACM |
499 | task2 = sched->tasks[j]; |
500 | add_sched_event_wakeup(sched, task1, 0, task2); | |
ec156764 IM |
501 | } |
502 | } | |
503 | ||
0e9b07e5 ACM |
504 | static void perf_sched__process_event(struct perf_sched *sched, |
505 | struct sched_atom *atom) | |
ec156764 IM |
506 | { |
507 | int ret = 0; | |
ec156764 | 508 | |
39aeb52f | 509 | switch (atom->type) { |
ec156764 | 510 | case SCHED_EVENT_RUN: |
0e9b07e5 | 511 | burn_nsecs(sched, atom->duration); |
ec156764 IM |
512 | break; |
513 | case SCHED_EVENT_SLEEP: | |
39aeb52f | 514 | if (atom->wait_sem) |
515 | ret = sem_wait(atom->wait_sem); | |
ec156764 IM |
516 | BUG_ON(ret); |
517 | break; | |
518 | case SCHED_EVENT_WAKEUP: | |
39aeb52f | 519 | if (atom->wait_sem) |
520 | ret = sem_post(atom->wait_sem); | |
ec156764 IM |
521 | BUG_ON(ret); |
522 | break; | |
55ffb7a6 MG |
523 | case SCHED_EVENT_MIGRATION: |
524 | break; | |
ec156764 IM |
525 | default: |
526 | BUG_ON(1); | |
527 | } | |
528 | } | |
529 | ||
b1ffe8f3 | 530 | static u64 get_cpu_usage_nsec_parent(void) |
ec156764 IM |
531 | { |
532 | struct rusage ru; | |
b1ffe8f3 | 533 | u64 sum; |
ec156764 IM |
534 | int err; |
535 | ||
536 | err = getrusage(RUSAGE_SELF, &ru); | |
537 | BUG_ON(err); | |
538 | ||
4fc76e49 ACM |
539 | sum = ru.ru_utime.tv_sec * NSEC_PER_SEC + ru.ru_utime.tv_usec * NSEC_PER_USEC; |
540 | sum += ru.ru_stime.tv_sec * NSEC_PER_SEC + ru.ru_stime.tv_usec * NSEC_PER_USEC; | |
ec156764 IM |
541 | |
542 | return sum; | |
543 | } | |
544 | ||
939cda52 | 545 | static int self_open_counters(struct perf_sched *sched, unsigned long cur_task) |
ec156764 | 546 | { |
c0c9e721 | 547 | struct perf_event_attr attr; |
939cda52 | 548 | char sbuf[STRERR_BUFSIZE], info[STRERR_BUFSIZE]; |
c0c9e721 | 549 | int fd; |
939cda52 YS |
550 | struct rlimit limit; |
551 | bool need_privilege = false; | |
ec156764 | 552 | |
c0c9e721 | 553 | memset(&attr, 0, sizeof(attr)); |
ec156764 | 554 | |
c0c9e721 XG |
555 | attr.type = PERF_TYPE_SOFTWARE; |
556 | attr.config = PERF_COUNT_SW_TASK_CLOCK; | |
ec156764 | 557 | |
939cda52 | 558 | force_again: |
57480d2c YD |
559 | fd = sys_perf_event_open(&attr, 0, -1, -1, |
560 | perf_event_open_cloexec_flag()); | |
c0c9e721 | 561 | |
1aff59be | 562 | if (fd < 0) { |
939cda52 YS |
563 | if (errno == EMFILE) { |
564 | if (sched->force) { | |
565 | BUG_ON(getrlimit(RLIMIT_NOFILE, &limit) == -1); | |
566 | limit.rlim_cur += sched->nr_tasks - cur_task; | |
567 | if (limit.rlim_cur > limit.rlim_max) { | |
568 | limit.rlim_max = limit.rlim_cur; | |
569 | need_privilege = true; | |
570 | } | |
571 | if (setrlimit(RLIMIT_NOFILE, &limit) == -1) { | |
572 | if (need_privilege && errno == EPERM) | |
573 | strcpy(info, "Need privilege\n"); | |
574 | } else | |
575 | goto force_again; | |
576 | } else | |
577 | strcpy(info, "Have a try with -f option\n"); | |
578 | } | |
60b7d14a | 579 | pr_err("Error: sys_perf_event_open() syscall returned " |
939cda52 | 580 | "with %d (%s)\n%s", fd, |
c8b5f2c9 | 581 | str_error_r(errno, sbuf, sizeof(sbuf)), info); |
1aff59be YS |
582 | exit(EXIT_FAILURE); |
583 | } | |
c0c9e721 XG |
584 | return fd; |
585 | } | |
586 | ||
587 | static u64 get_cpu_usage_nsec_self(int fd) | |
588 | { | |
589 | u64 runtime; | |
590 | int ret; | |
591 | ||
592 | ret = read(fd, &runtime, sizeof(runtime)); | |
593 | BUG_ON(ret != sizeof(runtime)); | |
594 | ||
595 | return runtime; | |
ec156764 IM |
596 | } |
597 | ||
0e9b07e5 ACM |
598 | struct sched_thread_parms { |
599 | struct task_desc *task; | |
600 | struct perf_sched *sched; | |
08097abc | 601 | int fd; |
0e9b07e5 ACM |
602 | }; |
603 | ||
ec156764 IM |
604 | static void *thread_func(void *ctx) |
605 | { | |
0e9b07e5 ACM |
606 | struct sched_thread_parms *parms = ctx; |
607 | struct task_desc *this_task = parms->task; | |
608 | struct perf_sched *sched = parms->sched; | |
b1ffe8f3 | 609 | u64 cpu_usage_0, cpu_usage_1; |
ec156764 IM |
610 | unsigned long i, ret; |
611 | char comm2[22]; | |
08097abc | 612 | int fd = parms->fd; |
ec156764 | 613 | |
74cf249d | 614 | zfree(&parms); |
0e9b07e5 | 615 | |
ec156764 IM |
616 | sprintf(comm2, ":%s", this_task->comm); |
617 | prctl(PR_SET_NAME, comm2); | |
a116e05d ACM |
618 | if (fd < 0) |
619 | return NULL; | |
ec156764 IM |
620 | again: |
621 | ret = sem_post(&this_task->ready_for_work); | |
622 | BUG_ON(ret); | |
0e9b07e5 | 623 | ret = pthread_mutex_lock(&sched->start_work_mutex); |
ec156764 | 624 | BUG_ON(ret); |
0e9b07e5 | 625 | ret = pthread_mutex_unlock(&sched->start_work_mutex); |
ec156764 | 626 | BUG_ON(ret); |
ec156764 | 627 | |
c0c9e721 | 628 | cpu_usage_0 = get_cpu_usage_nsec_self(fd); |
ec156764 IM |
629 | |
630 | for (i = 0; i < this_task->nr_events; i++) { | |
631 | this_task->curr_event = i; | |
0e9b07e5 | 632 | perf_sched__process_event(sched, this_task->atoms[i]); |
ec156764 IM |
633 | } |
634 | ||
c0c9e721 | 635 | cpu_usage_1 = get_cpu_usage_nsec_self(fd); |
ec156764 | 636 | this_task->cpu_usage = cpu_usage_1 - cpu_usage_0; |
ec156764 IM |
637 | ret = sem_post(&this_task->work_done_sem); |
638 | BUG_ON(ret); | |
ec156764 | 639 | |
0e9b07e5 | 640 | ret = pthread_mutex_lock(&sched->work_done_wait_mutex); |
ec156764 | 641 | BUG_ON(ret); |
0e9b07e5 | 642 | ret = pthread_mutex_unlock(&sched->work_done_wait_mutex); |
ec156764 | 643 | BUG_ON(ret); |
ec156764 IM |
644 | |
645 | goto again; | |
646 | } | |
647 | ||
0e9b07e5 | 648 | static void create_tasks(struct perf_sched *sched) |
ec156764 IM |
649 | { |
650 | struct task_desc *task; | |
651 | pthread_attr_t attr; | |
652 | unsigned long i; | |
653 | int err; | |
654 | ||
655 | err = pthread_attr_init(&attr); | |
656 | BUG_ON(err); | |
12f7e036 JP |
657 | err = pthread_attr_setstacksize(&attr, |
658 | (size_t) max(16 * 1024, PTHREAD_STACK_MIN)); | |
ec156764 | 659 | BUG_ON(err); |
0e9b07e5 | 660 | err = pthread_mutex_lock(&sched->start_work_mutex); |
ec156764 | 661 | BUG_ON(err); |
0e9b07e5 | 662 | err = pthread_mutex_lock(&sched->work_done_wait_mutex); |
ec156764 | 663 | BUG_ON(err); |
0e9b07e5 ACM |
664 | for (i = 0; i < sched->nr_tasks; i++) { |
665 | struct sched_thread_parms *parms = malloc(sizeof(*parms)); | |
666 | BUG_ON(parms == NULL); | |
667 | parms->task = task = sched->tasks[i]; | |
668 | parms->sched = sched; | |
939cda52 | 669 | parms->fd = self_open_counters(sched, i); |
ec156764 IM |
670 | sem_init(&task->sleep_sem, 0, 0); |
671 | sem_init(&task->ready_for_work, 0, 0); | |
672 | sem_init(&task->work_done_sem, 0, 0); | |
673 | task->curr_event = 0; | |
0e9b07e5 | 674 | err = pthread_create(&task->thread, &attr, thread_func, parms); |
ec156764 IM |
675 | BUG_ON(err); |
676 | } | |
677 | } | |
678 | ||
0e9b07e5 | 679 | static void wait_for_tasks(struct perf_sched *sched) |
ec156764 | 680 | { |
b1ffe8f3 | 681 | u64 cpu_usage_0, cpu_usage_1; |
ec156764 IM |
682 | struct task_desc *task; |
683 | unsigned long i, ret; | |
684 | ||
0e9b07e5 ACM |
685 | sched->start_time = get_nsecs(); |
686 | sched->cpu_usage = 0; | |
687 | pthread_mutex_unlock(&sched->work_done_wait_mutex); | |
ec156764 | 688 | |
0e9b07e5 ACM |
689 | for (i = 0; i < sched->nr_tasks; i++) { |
690 | task = sched->tasks[i]; | |
ec156764 IM |
691 | ret = sem_wait(&task->ready_for_work); |
692 | BUG_ON(ret); | |
693 | sem_init(&task->ready_for_work, 0, 0); | |
694 | } | |
0e9b07e5 | 695 | ret = pthread_mutex_lock(&sched->work_done_wait_mutex); |
ec156764 IM |
696 | BUG_ON(ret); |
697 | ||
698 | cpu_usage_0 = get_cpu_usage_nsec_parent(); | |
699 | ||
0e9b07e5 | 700 | pthread_mutex_unlock(&sched->start_work_mutex); |
ec156764 | 701 | |
0e9b07e5 ACM |
702 | for (i = 0; i < sched->nr_tasks; i++) { |
703 | task = sched->tasks[i]; | |
ec156764 IM |
704 | ret = sem_wait(&task->work_done_sem); |
705 | BUG_ON(ret); | |
706 | sem_init(&task->work_done_sem, 0, 0); | |
0e9b07e5 | 707 | sched->cpu_usage += task->cpu_usage; |
ec156764 IM |
708 | task->cpu_usage = 0; |
709 | } | |
710 | ||
711 | cpu_usage_1 = get_cpu_usage_nsec_parent(); | |
0e9b07e5 ACM |
712 | if (!sched->runavg_cpu_usage) |
713 | sched->runavg_cpu_usage = sched->cpu_usage; | |
ff5f3bbd | 714 | sched->runavg_cpu_usage = (sched->runavg_cpu_usage * (sched->replay_repeat - 1) + sched->cpu_usage) / sched->replay_repeat; |
ec156764 | 715 | |
0e9b07e5 ACM |
716 | sched->parent_cpu_usage = cpu_usage_1 - cpu_usage_0; |
717 | if (!sched->runavg_parent_cpu_usage) | |
718 | sched->runavg_parent_cpu_usage = sched->parent_cpu_usage; | |
ff5f3bbd YS |
719 | sched->runavg_parent_cpu_usage = (sched->runavg_parent_cpu_usage * (sched->replay_repeat - 1) + |
720 | sched->parent_cpu_usage)/sched->replay_repeat; | |
ec156764 | 721 | |
0e9b07e5 | 722 | ret = pthread_mutex_lock(&sched->start_work_mutex); |
ec156764 IM |
723 | BUG_ON(ret); |
724 | ||
0e9b07e5 ACM |
725 | for (i = 0; i < sched->nr_tasks; i++) { |
726 | task = sched->tasks[i]; | |
ec156764 IM |
727 | sem_init(&task->sleep_sem, 0, 0); |
728 | task->curr_event = 0; | |
729 | } | |
730 | } | |
731 | ||
0e9b07e5 | 732 | static void run_one_test(struct perf_sched *sched) |
ec156764 | 733 | { |
fb7d0b3c | 734 | u64 T0, T1, delta, avg_delta, fluct; |
ec156764 IM |
735 | |
736 | T0 = get_nsecs(); | |
0e9b07e5 | 737 | wait_for_tasks(sched); |
ec156764 IM |
738 | T1 = get_nsecs(); |
739 | ||
740 | delta = T1 - T0; | |
0e9b07e5 ACM |
741 | sched->sum_runtime += delta; |
742 | sched->nr_runs++; | |
ec156764 | 743 | |
0e9b07e5 | 744 | avg_delta = sched->sum_runtime / sched->nr_runs; |
ec156764 IM |
745 | if (delta < avg_delta) |
746 | fluct = avg_delta - delta; | |
747 | else | |
748 | fluct = delta - avg_delta; | |
0e9b07e5 ACM |
749 | sched->sum_fluct += fluct; |
750 | if (!sched->run_avg) | |
751 | sched->run_avg = delta; | |
ff5f3bbd | 752 | sched->run_avg = (sched->run_avg * (sched->replay_repeat - 1) + delta) / sched->replay_repeat; |
ec156764 | 753 | |
4fc76e49 | 754 | printf("#%-3ld: %0.3f, ", sched->nr_runs, (double)delta / NSEC_PER_MSEC); |
ec156764 | 755 | |
4fc76e49 | 756 | printf("ravg: %0.2f, ", (double)sched->run_avg / NSEC_PER_MSEC); |
ec156764 | 757 | |
ad236fd2 | 758 | printf("cpu: %0.2f / %0.2f", |
4fc76e49 | 759 | (double)sched->cpu_usage / NSEC_PER_MSEC, (double)sched->runavg_cpu_usage / NSEC_PER_MSEC); |
ec156764 IM |
760 | |
761 | #if 0 | |
762 | /* | |
fbf94829 | 763 | * rusage statistics done by the parent, these are less |
0e9b07e5 | 764 | * accurate than the sched->sum_exec_runtime based statistics: |
fbf94829 | 765 | */ |
ad236fd2 | 766 | printf(" [%0.2f / %0.2f]", |
4fc76e49 ACM |
767 | (double)sched->parent_cpu_usage / NSEC_PER_MSEC, |
768 | (double)sched->runavg_parent_cpu_usage / NSEC_PER_MSEC); | |
ec156764 IM |
769 | #endif |
770 | ||
ad236fd2 | 771 | printf("\n"); |
ec156764 | 772 | |
0e9b07e5 ACM |
773 | if (sched->nr_sleep_corrections) |
774 | printf(" (%ld sleep corrections)\n", sched->nr_sleep_corrections); | |
775 | sched->nr_sleep_corrections = 0; | |
ec156764 IM |
776 | } |
777 | ||
0e9b07e5 | 778 | static void test_calibrations(struct perf_sched *sched) |
ec156764 | 779 | { |
b1ffe8f3 | 780 | u64 T0, T1; |
ec156764 IM |
781 | |
782 | T0 = get_nsecs(); | |
4fc76e49 | 783 | burn_nsecs(sched, NSEC_PER_MSEC); |
ec156764 IM |
784 | T1 = get_nsecs(); |
785 | ||
9486aa38 | 786 | printf("the run test took %" PRIu64 " nsecs\n", T1 - T0); |
ec156764 IM |
787 | |
788 | T0 = get_nsecs(); | |
4fc76e49 | 789 | sleep_nsecs(NSEC_PER_MSEC); |
ec156764 IM |
790 | T1 = get_nsecs(); |
791 | ||
9486aa38 | 792 | printf("the sleep test took %" PRIu64 " nsecs\n", T1 - T0); |
ec156764 IM |
793 | } |
794 | ||
a116e05d | 795 | static int |
0e9b07e5 | 796 | replay_wakeup_event(struct perf_sched *sched, |
9ec3f4e4 ACM |
797 | struct perf_evsel *evsel, struct perf_sample *sample, |
798 | struct machine *machine __maybe_unused) | |
419ab0d6 | 799 | { |
9ec3f4e4 ACM |
800 | const char *comm = perf_evsel__strval(evsel, sample, "comm"); |
801 | const u32 pid = perf_evsel__intval(evsel, sample, "pid"); | |
419ab0d6 | 802 | struct task_desc *waker, *wakee; |
fbf94829 | 803 | |
bb963e16 | 804 | if (verbose > 0) { |
2b7fcbc5 | 805 | printf("sched_wakeup event %p\n", evsel); |
fbf94829 | 806 | |
9ec3f4e4 | 807 | printf(" ... pid %d woke up %s/%d\n", sample->tid, comm, pid); |
ad236fd2 | 808 | } |
fbf94829 | 809 | |
2b7fcbc5 | 810 | waker = register_pid(sched, sample->tid, "<unknown>"); |
9ec3f4e4 | 811 | wakee = register_pid(sched, pid, comm); |
fbf94829 | 812 | |
0e9b07e5 | 813 | add_sched_event_wakeup(sched, waker, sample->time, wakee); |
a116e05d | 814 | return 0; |
ec156764 IM |
815 | } |
816 | ||
9ec3f4e4 ACM |
817 | static int replay_switch_event(struct perf_sched *sched, |
818 | struct perf_evsel *evsel, | |
819 | struct perf_sample *sample, | |
820 | struct machine *machine __maybe_unused) | |
ec156764 | 821 | { |
9ec3f4e4 ACM |
822 | const char *prev_comm = perf_evsel__strval(evsel, sample, "prev_comm"), |
823 | *next_comm = perf_evsel__strval(evsel, sample, "next_comm"); | |
824 | const u32 prev_pid = perf_evsel__intval(evsel, sample, "prev_pid"), | |
825 | next_pid = perf_evsel__intval(evsel, sample, "next_pid"); | |
826 | const u64 prev_state = perf_evsel__intval(evsel, sample, "prev_state"); | |
1d037ca1 | 827 | struct task_desc *prev, __maybe_unused *next; |
7f7f8d0b ACM |
828 | u64 timestamp0, timestamp = sample->time; |
829 | int cpu = sample->cpu; | |
fbf94829 IM |
830 | s64 delta; |
831 | ||
bb963e16 | 832 | if (verbose > 0) |
2b7fcbc5 | 833 | printf("sched_switch event %p\n", evsel); |
ad236fd2 | 834 | |
fbf94829 | 835 | if (cpu >= MAX_CPUS || cpu < 0) |
a116e05d | 836 | return 0; |
fbf94829 | 837 | |
0e9b07e5 | 838 | timestamp0 = sched->cpu_last_switched[cpu]; |
fbf94829 IM |
839 | if (timestamp0) |
840 | delta = timestamp - timestamp0; | |
841 | else | |
842 | delta = 0; | |
843 | ||
a116e05d | 844 | if (delta < 0) { |
60b7d14a | 845 | pr_err("hm, delta: %" PRIu64 " < 0 ?\n", delta); |
a116e05d ACM |
846 | return -1; |
847 | } | |
fbf94829 | 848 | |
9ec3f4e4 ACM |
849 | pr_debug(" ... switch from %s/%d to %s/%d [ran %" PRIu64 " nsecs]\n", |
850 | prev_comm, prev_pid, next_comm, next_pid, delta); | |
fbf94829 | 851 | |
9ec3f4e4 ACM |
852 | prev = register_pid(sched, prev_pid, prev_comm); |
853 | next = register_pid(sched, next_pid, next_comm); | |
fbf94829 | 854 | |
0e9b07e5 | 855 | sched->cpu_last_switched[cpu] = timestamp; |
fbf94829 | 856 | |
0e9b07e5 | 857 | add_sched_event_run(sched, prev, timestamp, delta); |
9ec3f4e4 | 858 | add_sched_event_sleep(sched, prev, timestamp, prev_state); |
a116e05d ACM |
859 | |
860 | return 0; | |
fbf94829 IM |
861 | } |
862 | ||
cb627505 DA |
863 | static int replay_fork_event(struct perf_sched *sched, |
864 | union perf_event *event, | |
865 | struct machine *machine) | |
419ab0d6 | 866 | { |
cb627505 DA |
867 | struct thread *child, *parent; |
868 | ||
314add6b AH |
869 | child = machine__findnew_thread(machine, event->fork.pid, |
870 | event->fork.tid); | |
871 | parent = machine__findnew_thread(machine, event->fork.ppid, | |
872 | event->fork.ptid); | |
cb627505 DA |
873 | |
874 | if (child == NULL || parent == NULL) { | |
875 | pr_debug("thread does not exist on fork event: child %p, parent %p\n", | |
876 | child, parent); | |
b91fc39f | 877 | goto out_put; |
cb627505 | 878 | } |
9ec3f4e4 | 879 | |
bb963e16 | 880 | if (verbose > 0) { |
cb627505 | 881 | printf("fork event\n"); |
b9c5143a FW |
882 | printf("... parent: %s/%d\n", thread__comm_str(parent), parent->tid); |
883 | printf("... child: %s/%d\n", thread__comm_str(child), child->tid); | |
419ab0d6 | 884 | } |
9ec3f4e4 | 885 | |
b9c5143a FW |
886 | register_pid(sched, parent->tid, thread__comm_str(parent)); |
887 | register_pid(sched, child->tid, thread__comm_str(child)); | |
b91fc39f ACM |
888 | out_put: |
889 | thread__put(child); | |
890 | thread__put(parent); | |
a116e05d | 891 | return 0; |
419ab0d6 | 892 | } |
fbf94829 | 893 | |
b1ffe8f3 IM |
894 | struct sort_dimension { |
895 | const char *name; | |
b5fae128 | 896 | sort_fn_t cmp; |
b1ffe8f3 IM |
897 | struct list_head list; |
898 | }; | |
899 | ||
daa1d7a5 | 900 | static int |
39aeb52f | 901 | thread_lat_cmp(struct list_head *list, struct work_atoms *l, struct work_atoms *r) |
daa1d7a5 FW |
902 | { |
903 | struct sort_dimension *sort; | |
904 | int ret = 0; | |
905 | ||
b5fae128 IM |
906 | BUG_ON(list_empty(list)); |
907 | ||
daa1d7a5 FW |
908 | list_for_each_entry(sort, list, list) { |
909 | ret = sort->cmp(l, r); | |
910 | if (ret) | |
911 | return ret; | |
912 | } | |
913 | ||
914 | return ret; | |
915 | } | |
916 | ||
39aeb52f | 917 | static struct work_atoms * |
b5fae128 IM |
918 | thread_atoms_search(struct rb_root *root, struct thread *thread, |
919 | struct list_head *sort_list) | |
920 | { | |
921 | struct rb_node *node = root->rb_node; | |
39aeb52f | 922 | struct work_atoms key = { .thread = thread }; |
b5fae128 IM |
923 | |
924 | while (node) { | |
39aeb52f | 925 | struct work_atoms *atoms; |
b5fae128 IM |
926 | int cmp; |
927 | ||
39aeb52f | 928 | atoms = container_of(node, struct work_atoms, node); |
b5fae128 IM |
929 | |
930 | cmp = thread_lat_cmp(sort_list, &key, atoms); | |
931 | if (cmp > 0) | |
932 | node = node->rb_left; | |
933 | else if (cmp < 0) | |
934 | node = node->rb_right; | |
935 | else { | |
936 | BUG_ON(thread != atoms->thread); | |
937 | return atoms; | |
938 | } | |
939 | } | |
940 | return NULL; | |
941 | } | |
942 | ||
cdce9d73 | 943 | static void |
39aeb52f | 944 | __thread_latency_insert(struct rb_root *root, struct work_atoms *data, |
daa1d7a5 | 945 | struct list_head *sort_list) |
cdce9d73 FW |
946 | { |
947 | struct rb_node **new = &(root->rb_node), *parent = NULL; | |
948 | ||
949 | while (*new) { | |
39aeb52f | 950 | struct work_atoms *this; |
daa1d7a5 | 951 | int cmp; |
cdce9d73 | 952 | |
39aeb52f | 953 | this = container_of(*new, struct work_atoms, node); |
cdce9d73 | 954 | parent = *new; |
daa1d7a5 FW |
955 | |
956 | cmp = thread_lat_cmp(sort_list, data, this); | |
957 | ||
958 | if (cmp > 0) | |
cdce9d73 | 959 | new = &((*new)->rb_left); |
cdce9d73 | 960 | else |
daa1d7a5 | 961 | new = &((*new)->rb_right); |
cdce9d73 FW |
962 | } |
963 | ||
964 | rb_link_node(&data->node, parent, new); | |
965 | rb_insert_color(&data->node, root); | |
966 | } | |
967 | ||
0e9b07e5 | 968 | static int thread_atoms_insert(struct perf_sched *sched, struct thread *thread) |
cdce9d73 | 969 | { |
36479484 | 970 | struct work_atoms *atoms = zalloc(sizeof(*atoms)); |
a116e05d ACM |
971 | if (!atoms) { |
972 | pr_err("No memory at %s\n", __func__); | |
973 | return -1; | |
974 | } | |
cdce9d73 | 975 | |
f3b623b8 | 976 | atoms->thread = thread__get(thread); |
39aeb52f | 977 | INIT_LIST_HEAD(&atoms->work_list); |
0e9b07e5 | 978 | __thread_latency_insert(&sched->atom_root, atoms, &sched->cmp_pid); |
a116e05d | 979 | return 0; |
cdce9d73 FW |
980 | } |
981 | ||
9ec3f4e4 | 982 | static char sched_out_state(u64 prev_state) |
cdce9d73 FW |
983 | { |
984 | const char *str = TASK_STATE_TO_CHAR_STR; | |
985 | ||
9ec3f4e4 | 986 | return str[prev_state]; |
cdce9d73 FW |
987 | } |
988 | ||
a116e05d | 989 | static int |
39aeb52f | 990 | add_sched_out_event(struct work_atoms *atoms, |
991 | char run_state, | |
992 | u64 timestamp) | |
cdce9d73 | 993 | { |
36479484 | 994 | struct work_atom *atom = zalloc(sizeof(*atom)); |
a116e05d ACM |
995 | if (!atom) { |
996 | pr_err("Non memory at %s", __func__); | |
997 | return -1; | |
998 | } | |
cdce9d73 | 999 | |
aa1ab9d2 FW |
1000 | atom->sched_out_time = timestamp; |
1001 | ||
39aeb52f | 1002 | if (run_state == 'R') { |
b1ffe8f3 | 1003 | atom->state = THREAD_WAIT_CPU; |
aa1ab9d2 | 1004 | atom->wake_up_time = atom->sched_out_time; |
c6ced611 FW |
1005 | } |
1006 | ||
39aeb52f | 1007 | list_add_tail(&atom->list, &atoms->work_list); |
a116e05d | 1008 | return 0; |
cdce9d73 FW |
1009 | } |
1010 | ||
1011 | static void | |
1d037ca1 IT |
1012 | add_runtime_event(struct work_atoms *atoms, u64 delta, |
1013 | u64 timestamp __maybe_unused) | |
39aeb52f | 1014 | { |
1015 | struct work_atom *atom; | |
1016 | ||
1017 | BUG_ON(list_empty(&atoms->work_list)); | |
1018 | ||
1019 | atom = list_entry(atoms->work_list.prev, struct work_atom, list); | |
1020 | ||
1021 | atom->runtime += delta; | |
1022 | atoms->total_runtime += delta; | |
1023 | } | |
1024 | ||
1025 | static void | |
1026 | add_sched_in_event(struct work_atoms *atoms, u64 timestamp) | |
cdce9d73 | 1027 | { |
b1ffe8f3 | 1028 | struct work_atom *atom; |
66685678 | 1029 | u64 delta; |
cdce9d73 | 1030 | |
39aeb52f | 1031 | if (list_empty(&atoms->work_list)) |
cdce9d73 FW |
1032 | return; |
1033 | ||
39aeb52f | 1034 | atom = list_entry(atoms->work_list.prev, struct work_atom, list); |
cdce9d73 | 1035 | |
b1ffe8f3 | 1036 | if (atom->state != THREAD_WAIT_CPU) |
cdce9d73 FW |
1037 | return; |
1038 | ||
b1ffe8f3 IM |
1039 | if (timestamp < atom->wake_up_time) { |
1040 | atom->state = THREAD_IGNORE; | |
cdce9d73 FW |
1041 | return; |
1042 | } | |
1043 | ||
b1ffe8f3 IM |
1044 | atom->state = THREAD_SCHED_IN; |
1045 | atom->sched_in_time = timestamp; | |
66685678 | 1046 | |
b1ffe8f3 | 1047 | delta = atom->sched_in_time - atom->wake_up_time; |
66685678 | 1048 | atoms->total_lat += delta; |
3786310a | 1049 | if (delta > atoms->max_lat) { |
66685678 | 1050 | atoms->max_lat = delta; |
3786310a FW |
1051 | atoms->max_lat_at = timestamp; |
1052 | } | |
66685678 | 1053 | atoms->nb_atoms++; |
cdce9d73 FW |
1054 | } |
1055 | ||
9ec3f4e4 ACM |
1056 | static int latency_switch_event(struct perf_sched *sched, |
1057 | struct perf_evsel *evsel, | |
1058 | struct perf_sample *sample, | |
1059 | struct machine *machine) | |
cdce9d73 | 1060 | { |
9ec3f4e4 ACM |
1061 | const u32 prev_pid = perf_evsel__intval(evsel, sample, "prev_pid"), |
1062 | next_pid = perf_evsel__intval(evsel, sample, "next_pid"); | |
1063 | const u64 prev_state = perf_evsel__intval(evsel, sample, "prev_state"); | |
39aeb52f | 1064 | struct work_atoms *out_events, *in_events; |
cdce9d73 | 1065 | struct thread *sched_out, *sched_in; |
7f7f8d0b | 1066 | u64 timestamp0, timestamp = sample->time; |
b91fc39f | 1067 | int cpu = sample->cpu, err = -1; |
ea92ed5a IM |
1068 | s64 delta; |
1069 | ||
39aeb52f | 1070 | BUG_ON(cpu >= MAX_CPUS || cpu < 0); |
ea92ed5a | 1071 | |
0e9b07e5 ACM |
1072 | timestamp0 = sched->cpu_last_switched[cpu]; |
1073 | sched->cpu_last_switched[cpu] = timestamp; | |
ea92ed5a IM |
1074 | if (timestamp0) |
1075 | delta = timestamp - timestamp0; | |
1076 | else | |
1077 | delta = 0; | |
1078 | ||
a116e05d ACM |
1079 | if (delta < 0) { |
1080 | pr_err("hm, delta: %" PRIu64 " < 0 ?\n", delta); | |
1081 | return -1; | |
1082 | } | |
cdce9d73 | 1083 | |
1fcb8768 AH |
1084 | sched_out = machine__findnew_thread(machine, -1, prev_pid); |
1085 | sched_in = machine__findnew_thread(machine, -1, next_pid); | |
b91fc39f ACM |
1086 | if (sched_out == NULL || sched_in == NULL) |
1087 | goto out_put; | |
cdce9d73 | 1088 | |
0e9b07e5 | 1089 | out_events = thread_atoms_search(&sched->atom_root, sched_out, &sched->cmp_pid); |
39aeb52f | 1090 | if (!out_events) { |
0e9b07e5 | 1091 | if (thread_atoms_insert(sched, sched_out)) |
b91fc39f | 1092 | goto out_put; |
0e9b07e5 | 1093 | out_events = thread_atoms_search(&sched->atom_root, sched_out, &sched->cmp_pid); |
a116e05d ACM |
1094 | if (!out_events) { |
1095 | pr_err("out-event: Internal tree error"); | |
b91fc39f | 1096 | goto out_put; |
a116e05d | 1097 | } |
39aeb52f | 1098 | } |
9ec3f4e4 | 1099 | if (add_sched_out_event(out_events, sched_out_state(prev_state), timestamp)) |
a116e05d | 1100 | return -1; |
39aeb52f | 1101 | |
0e9b07e5 | 1102 | in_events = thread_atoms_search(&sched->atom_root, sched_in, &sched->cmp_pid); |
39aeb52f | 1103 | if (!in_events) { |
0e9b07e5 | 1104 | if (thread_atoms_insert(sched, sched_in)) |
b91fc39f | 1105 | goto out_put; |
0e9b07e5 | 1106 | in_events = thread_atoms_search(&sched->atom_root, sched_in, &sched->cmp_pid); |
a116e05d ACM |
1107 | if (!in_events) { |
1108 | pr_err("in-event: Internal tree error"); | |
b91fc39f | 1109 | goto out_put; |
a116e05d | 1110 | } |
39aeb52f | 1111 | /* |
1112 | * Take came in we have not heard about yet, | |
1113 | * add in an initial atom in runnable state: | |
1114 | */ | |
a116e05d | 1115 | if (add_sched_out_event(in_events, 'R', timestamp)) |
b91fc39f | 1116 | goto out_put; |
cdce9d73 | 1117 | } |
39aeb52f | 1118 | add_sched_in_event(in_events, timestamp); |
b91fc39f ACM |
1119 | err = 0; |
1120 | out_put: | |
1121 | thread__put(sched_out); | |
1122 | thread__put(sched_in); | |
1123 | return err; | |
39aeb52f | 1124 | } |
cdce9d73 | 1125 | |
9ec3f4e4 ACM |
1126 | static int latency_runtime_event(struct perf_sched *sched, |
1127 | struct perf_evsel *evsel, | |
1128 | struct perf_sample *sample, | |
1129 | struct machine *machine) | |
39aeb52f | 1130 | { |
9ec3f4e4 ACM |
1131 | const u32 pid = perf_evsel__intval(evsel, sample, "pid"); |
1132 | const u64 runtime = perf_evsel__intval(evsel, sample, "runtime"); | |
1fcb8768 | 1133 | struct thread *thread = machine__findnew_thread(machine, -1, pid); |
0e9b07e5 | 1134 | struct work_atoms *atoms = thread_atoms_search(&sched->atom_root, thread, &sched->cmp_pid); |
7f7f8d0b | 1135 | u64 timestamp = sample->time; |
b91fc39f ACM |
1136 | int cpu = sample->cpu, err = -1; |
1137 | ||
1138 | if (thread == NULL) | |
1139 | return -1; | |
39aeb52f | 1140 | |
1141 | BUG_ON(cpu >= MAX_CPUS || cpu < 0); | |
39aeb52f | 1142 | if (!atoms) { |
0e9b07e5 | 1143 | if (thread_atoms_insert(sched, thread)) |
b91fc39f | 1144 | goto out_put; |
0e9b07e5 | 1145 | atoms = thread_atoms_search(&sched->atom_root, thread, &sched->cmp_pid); |
a116e05d | 1146 | if (!atoms) { |
60b7d14a | 1147 | pr_err("in-event: Internal tree error"); |
b91fc39f | 1148 | goto out_put; |
a116e05d ACM |
1149 | } |
1150 | if (add_sched_out_event(atoms, 'R', timestamp)) | |
b91fc39f | 1151 | goto out_put; |
cdce9d73 FW |
1152 | } |
1153 | ||
9ec3f4e4 | 1154 | add_runtime_event(atoms, runtime, timestamp); |
b91fc39f ACM |
1155 | err = 0; |
1156 | out_put: | |
1157 | thread__put(thread); | |
1158 | return err; | |
cdce9d73 FW |
1159 | } |
1160 | ||
9ec3f4e4 ACM |
1161 | static int latency_wakeup_event(struct perf_sched *sched, |
1162 | struct perf_evsel *evsel, | |
1163 | struct perf_sample *sample, | |
1164 | struct machine *machine) | |
cdce9d73 | 1165 | { |
0680ee7d | 1166 | const u32 pid = perf_evsel__intval(evsel, sample, "pid"); |
39aeb52f | 1167 | struct work_atoms *atoms; |
b1ffe8f3 | 1168 | struct work_atom *atom; |
cdce9d73 | 1169 | struct thread *wakee; |
7f7f8d0b | 1170 | u64 timestamp = sample->time; |
b91fc39f | 1171 | int err = -1; |
cdce9d73 | 1172 | |
1fcb8768 | 1173 | wakee = machine__findnew_thread(machine, -1, pid); |
b91fc39f ACM |
1174 | if (wakee == NULL) |
1175 | return -1; | |
0e9b07e5 | 1176 | atoms = thread_atoms_search(&sched->atom_root, wakee, &sched->cmp_pid); |
17562205 | 1177 | if (!atoms) { |
0e9b07e5 | 1178 | if (thread_atoms_insert(sched, wakee)) |
b91fc39f | 1179 | goto out_put; |
0e9b07e5 | 1180 | atoms = thread_atoms_search(&sched->atom_root, wakee, &sched->cmp_pid); |
a116e05d | 1181 | if (!atoms) { |
60b7d14a | 1182 | pr_err("wakeup-event: Internal tree error"); |
b91fc39f | 1183 | goto out_put; |
a116e05d ACM |
1184 | } |
1185 | if (add_sched_out_event(atoms, 'S', timestamp)) | |
b91fc39f | 1186 | goto out_put; |
cdce9d73 FW |
1187 | } |
1188 | ||
39aeb52f | 1189 | BUG_ON(list_empty(&atoms->work_list)); |
cdce9d73 | 1190 | |
39aeb52f | 1191 | atom = list_entry(atoms->work_list.prev, struct work_atom, list); |
cdce9d73 | 1192 | |
55ffb7a6 | 1193 | /* |
67d6259d DY |
1194 | * As we do not guarantee the wakeup event happens when |
1195 | * task is out of run queue, also may happen when task is | |
1196 | * on run queue and wakeup only change ->state to TASK_RUNNING, | |
1197 | * then we should not set the ->wake_up_time when wake up a | |
1198 | * task which is on run queue. | |
1199 | * | |
55ffb7a6 MG |
1200 | * You WILL be missing events if you've recorded only |
1201 | * one CPU, or are only looking at only one, so don't | |
67d6259d | 1202 | * skip in this case. |
55ffb7a6 | 1203 | */ |
0e9b07e5 | 1204 | if (sched->profile_cpu == -1 && atom->state != THREAD_SLEEPING) |
b91fc39f | 1205 | goto out_ok; |
cdce9d73 | 1206 | |
0e9b07e5 | 1207 | sched->nr_timestamps++; |
ea57c4f5 | 1208 | if (atom->sched_out_time > timestamp) { |
0e9b07e5 | 1209 | sched->nr_unordered_timestamps++; |
b91fc39f | 1210 | goto out_ok; |
ea57c4f5 | 1211 | } |
aa1ab9d2 | 1212 | |
b1ffe8f3 IM |
1213 | atom->state = THREAD_WAIT_CPU; |
1214 | atom->wake_up_time = timestamp; | |
b91fc39f ACM |
1215 | out_ok: |
1216 | err = 0; | |
1217 | out_put: | |
1218 | thread__put(wakee); | |
1219 | return err; | |
cdce9d73 FW |
1220 | } |
1221 | ||
9ec3f4e4 ACM |
1222 | static int latency_migrate_task_event(struct perf_sched *sched, |
1223 | struct perf_evsel *evsel, | |
1224 | struct perf_sample *sample, | |
1225 | struct machine *machine) | |
55ffb7a6 | 1226 | { |
9ec3f4e4 | 1227 | const u32 pid = perf_evsel__intval(evsel, sample, "pid"); |
7f7f8d0b | 1228 | u64 timestamp = sample->time; |
55ffb7a6 MG |
1229 | struct work_atoms *atoms; |
1230 | struct work_atom *atom; | |
1231 | struct thread *migrant; | |
b91fc39f | 1232 | int err = -1; |
55ffb7a6 MG |
1233 | |
1234 | /* | |
1235 | * Only need to worry about migration when profiling one CPU. | |
1236 | */ | |
0e9b07e5 | 1237 | if (sched->profile_cpu == -1) |
a116e05d | 1238 | return 0; |
55ffb7a6 | 1239 | |
1fcb8768 | 1240 | migrant = machine__findnew_thread(machine, -1, pid); |
b91fc39f ACM |
1241 | if (migrant == NULL) |
1242 | return -1; | |
0e9b07e5 | 1243 | atoms = thread_atoms_search(&sched->atom_root, migrant, &sched->cmp_pid); |
55ffb7a6 | 1244 | if (!atoms) { |
0e9b07e5 | 1245 | if (thread_atoms_insert(sched, migrant)) |
b91fc39f | 1246 | goto out_put; |
b9c5143a | 1247 | register_pid(sched, migrant->tid, thread__comm_str(migrant)); |
0e9b07e5 | 1248 | atoms = thread_atoms_search(&sched->atom_root, migrant, &sched->cmp_pid); |
a116e05d | 1249 | if (!atoms) { |
60b7d14a | 1250 | pr_err("migration-event: Internal tree error"); |
b91fc39f | 1251 | goto out_put; |
a116e05d ACM |
1252 | } |
1253 | if (add_sched_out_event(atoms, 'R', timestamp)) | |
b91fc39f | 1254 | goto out_put; |
55ffb7a6 MG |
1255 | } |
1256 | ||
1257 | BUG_ON(list_empty(&atoms->work_list)); | |
1258 | ||
1259 | atom = list_entry(atoms->work_list.prev, struct work_atom, list); | |
1260 | atom->sched_in_time = atom->sched_out_time = atom->wake_up_time = timestamp; | |
1261 | ||
0e9b07e5 | 1262 | sched->nr_timestamps++; |
55ffb7a6 MG |
1263 | |
1264 | if (atom->sched_out_time > timestamp) | |
0e9b07e5 | 1265 | sched->nr_unordered_timestamps++; |
b91fc39f ACM |
1266 | err = 0; |
1267 | out_put: | |
1268 | thread__put(migrant); | |
1269 | return err; | |
55ffb7a6 MG |
1270 | } |
1271 | ||
0e9b07e5 | 1272 | static void output_lat_thread(struct perf_sched *sched, struct work_atoms *work_list) |
cdce9d73 | 1273 | { |
cdce9d73 FW |
1274 | int i; |
1275 | int ret; | |
66685678 | 1276 | u64 avg; |
99620a5d | 1277 | char max_lat_at[32]; |
cdce9d73 | 1278 | |
39aeb52f | 1279 | if (!work_list->nb_atoms) |
cdce9d73 | 1280 | return; |
ea57c4f5 IM |
1281 | /* |
1282 | * Ignore idle threads: | |
1283 | */ | |
b9c5143a | 1284 | if (!strcmp(thread__comm_str(work_list->thread), "swapper")) |
ea57c4f5 | 1285 | return; |
cdce9d73 | 1286 | |
0e9b07e5 ACM |
1287 | sched->all_runtime += work_list->total_runtime; |
1288 | sched->all_count += work_list->nb_atoms; | |
66685678 | 1289 | |
2f80dd44 JB |
1290 | if (work_list->num_merged > 1) |
1291 | ret = printf(" %s:(%d) ", thread__comm_str(work_list->thread), work_list->num_merged); | |
1292 | else | |
1293 | ret = printf(" %s:%d ", thread__comm_str(work_list->thread), work_list->thread->tid); | |
cdce9d73 | 1294 | |
08f69e6c | 1295 | for (i = 0; i < 24 - ret; i++) |
cdce9d73 FW |
1296 | printf(" "); |
1297 | ||
39aeb52f | 1298 | avg = work_list->total_lat / work_list->nb_atoms; |
99620a5d | 1299 | timestamp__scnprintf_usec(work_list->max_lat_at, max_lat_at, sizeof(max_lat_at)); |
cdce9d73 | 1300 | |
99620a5d | 1301 | printf("|%11.3f ms |%9" PRIu64 " | avg:%9.3f ms | max:%9.3f ms | max at: %13s s\n", |
4fc76e49 ACM |
1302 | (double)work_list->total_runtime / NSEC_PER_MSEC, |
1303 | work_list->nb_atoms, (double)avg / NSEC_PER_MSEC, | |
1304 | (double)work_list->max_lat / NSEC_PER_MSEC, | |
99620a5d | 1305 | max_lat_at); |
cdce9d73 FW |
1306 | } |
1307 | ||
39aeb52f | 1308 | static int pid_cmp(struct work_atoms *l, struct work_atoms *r) |
daa1d7a5 | 1309 | { |
0014de17 JO |
1310 | if (l->thread == r->thread) |
1311 | return 0; | |
38051234 | 1312 | if (l->thread->tid < r->thread->tid) |
daa1d7a5 | 1313 | return -1; |
38051234 | 1314 | if (l->thread->tid > r->thread->tid) |
daa1d7a5 | 1315 | return 1; |
0014de17 | 1316 | return (int)(l->thread - r->thread); |
daa1d7a5 FW |
1317 | } |
1318 | ||
39aeb52f | 1319 | static int avg_cmp(struct work_atoms *l, struct work_atoms *r) |
daa1d7a5 FW |
1320 | { |
1321 | u64 avgl, avgr; | |
1322 | ||
1323 | if (!l->nb_atoms) | |
1324 | return -1; | |
1325 | ||
1326 | if (!r->nb_atoms) | |
1327 | return 1; | |
1328 | ||
1329 | avgl = l->total_lat / l->nb_atoms; | |
1330 | avgr = r->total_lat / r->nb_atoms; | |
1331 | ||
1332 | if (avgl < avgr) | |
1333 | return -1; | |
1334 | if (avgl > avgr) | |
1335 | return 1; | |
1336 | ||
1337 | return 0; | |
1338 | } | |
1339 | ||
39aeb52f | 1340 | static int max_cmp(struct work_atoms *l, struct work_atoms *r) |
daa1d7a5 FW |
1341 | { |
1342 | if (l->max_lat < r->max_lat) | |
1343 | return -1; | |
1344 | if (l->max_lat > r->max_lat) | |
1345 | return 1; | |
1346 | ||
1347 | return 0; | |
1348 | } | |
1349 | ||
39aeb52f | 1350 | static int switch_cmp(struct work_atoms *l, struct work_atoms *r) |
daa1d7a5 FW |
1351 | { |
1352 | if (l->nb_atoms < r->nb_atoms) | |
1353 | return -1; | |
1354 | if (l->nb_atoms > r->nb_atoms) | |
1355 | return 1; | |
1356 | ||
1357 | return 0; | |
1358 | } | |
1359 | ||
39aeb52f | 1360 | static int runtime_cmp(struct work_atoms *l, struct work_atoms *r) |
daa1d7a5 FW |
1361 | { |
1362 | if (l->total_runtime < r->total_runtime) | |
1363 | return -1; | |
1364 | if (l->total_runtime > r->total_runtime) | |
1365 | return 1; | |
1366 | ||
1367 | return 0; | |
1368 | } | |
1369 | ||
cbef79a8 | 1370 | static int sort_dimension__add(const char *tok, struct list_head *list) |
daa1d7a5 | 1371 | { |
0e9b07e5 ACM |
1372 | size_t i; |
1373 | static struct sort_dimension avg_sort_dimension = { | |
1374 | .name = "avg", | |
1375 | .cmp = avg_cmp, | |
1376 | }; | |
1377 | static struct sort_dimension max_sort_dimension = { | |
1378 | .name = "max", | |
1379 | .cmp = max_cmp, | |
1380 | }; | |
1381 | static struct sort_dimension pid_sort_dimension = { | |
1382 | .name = "pid", | |
1383 | .cmp = pid_cmp, | |
1384 | }; | |
1385 | static struct sort_dimension runtime_sort_dimension = { | |
1386 | .name = "runtime", | |
1387 | .cmp = runtime_cmp, | |
1388 | }; | |
1389 | static struct sort_dimension switch_sort_dimension = { | |
1390 | .name = "switch", | |
1391 | .cmp = switch_cmp, | |
1392 | }; | |
1393 | struct sort_dimension *available_sorts[] = { | |
1394 | &pid_sort_dimension, | |
1395 | &avg_sort_dimension, | |
1396 | &max_sort_dimension, | |
1397 | &switch_sort_dimension, | |
1398 | &runtime_sort_dimension, | |
1399 | }; | |
daa1d7a5 | 1400 | |
0e9b07e5 | 1401 | for (i = 0; i < ARRAY_SIZE(available_sorts); i++) { |
daa1d7a5 FW |
1402 | if (!strcmp(available_sorts[i]->name, tok)) { |
1403 | list_add_tail(&available_sorts[i]->list, list); | |
1404 | ||
1405 | return 0; | |
1406 | } | |
1407 | } | |
1408 | ||
1409 | return -1; | |
1410 | } | |
1411 | ||
0e9b07e5 | 1412 | static void perf_sched__sort_lat(struct perf_sched *sched) |
daa1d7a5 FW |
1413 | { |
1414 | struct rb_node *node; | |
2f80dd44 JB |
1415 | struct rb_root *root = &sched->atom_root; |
1416 | again: | |
daa1d7a5 | 1417 | for (;;) { |
39aeb52f | 1418 | struct work_atoms *data; |
2f80dd44 | 1419 | node = rb_first(root); |
daa1d7a5 FW |
1420 | if (!node) |
1421 | break; | |
1422 | ||
2f80dd44 | 1423 | rb_erase(node, root); |
39aeb52f | 1424 | data = rb_entry(node, struct work_atoms, node); |
0e9b07e5 | 1425 | __thread_latency_insert(&sched->sorted_atom_root, data, &sched->sort_list); |
daa1d7a5 | 1426 | } |
2f80dd44 JB |
1427 | if (root == &sched->atom_root) { |
1428 | root = &sched->merged_atom_root; | |
1429 | goto again; | |
1430 | } | |
daa1d7a5 FW |
1431 | } |
1432 | ||
0e9b07e5 | 1433 | static int process_sched_wakeup_event(struct perf_tool *tool, |
2b7fcbc5 | 1434 | struct perf_evsel *evsel, |
1d037ca1 | 1435 | struct perf_sample *sample, |
4218e673 | 1436 | struct machine *machine) |
419ab0d6 | 1437 | { |
0e9b07e5 | 1438 | struct perf_sched *sched = container_of(tool, struct perf_sched, tool); |
419ab0d6 | 1439 | |
9ec3f4e4 ACM |
1440 | if (sched->tp_handler->wakeup_event) |
1441 | return sched->tp_handler->wakeup_event(sched, evsel, sample, machine); | |
a116e05d | 1442 | |
2b7fcbc5 | 1443 | return 0; |
419ab0d6 FW |
1444 | } |
1445 | ||
a151a37a JO |
1446 | union map_priv { |
1447 | void *ptr; | |
1448 | bool color; | |
1449 | }; | |
1450 | ||
1451 | static bool thread__has_color(struct thread *thread) | |
1452 | { | |
1453 | union map_priv priv = { | |
1454 | .ptr = thread__priv(thread), | |
1455 | }; | |
1456 | ||
1457 | return priv.color; | |
1458 | } | |
1459 | ||
1460 | static struct thread* | |
1461 | map__findnew_thread(struct perf_sched *sched, struct machine *machine, pid_t pid, pid_t tid) | |
1462 | { | |
1463 | struct thread *thread = machine__findnew_thread(machine, pid, tid); | |
1464 | union map_priv priv = { | |
1465 | .color = false, | |
1466 | }; | |
1467 | ||
1468 | if (!sched->map.color_pids || !thread || thread__priv(thread)) | |
1469 | return thread; | |
1470 | ||
1471 | if (thread_map__has(sched->map.color_pids, tid)) | |
1472 | priv.color = true; | |
1473 | ||
1474 | thread__set_priv(thread, priv.ptr); | |
1475 | return thread; | |
1476 | } | |
1477 | ||
9ec3f4e4 ACM |
1478 | static int map_switch_event(struct perf_sched *sched, struct perf_evsel *evsel, |
1479 | struct perf_sample *sample, struct machine *machine) | |
0ec04e16 | 1480 | { |
9d372ca5 DY |
1481 | const u32 next_pid = perf_evsel__intval(evsel, sample, "next_pid"); |
1482 | struct thread *sched_in; | |
0ec04e16 | 1483 | int new_shortname; |
7f7f8d0b | 1484 | u64 timestamp0, timestamp = sample->time; |
0ec04e16 | 1485 | s64 delta; |
99623c62 JO |
1486 | int i, this_cpu = sample->cpu; |
1487 | int cpus_nr; | |
1488 | bool new_cpu = false; | |
8cd91195 | 1489 | const char *color = PERF_COLOR_NORMAL; |
99620a5d | 1490 | char stimestamp[32]; |
0ec04e16 IM |
1491 | |
1492 | BUG_ON(this_cpu >= MAX_CPUS || this_cpu < 0); | |
1493 | ||
0e9b07e5 ACM |
1494 | if (this_cpu > sched->max_cpu) |
1495 | sched->max_cpu = this_cpu; | |
0ec04e16 | 1496 | |
99623c62 JO |
1497 | if (sched->map.comp) { |
1498 | cpus_nr = bitmap_weight(sched->map.comp_cpus_mask, MAX_CPUS); | |
1499 | if (!test_and_set_bit(this_cpu, sched->map.comp_cpus_mask)) { | |
1500 | sched->map.comp_cpus[cpus_nr++] = this_cpu; | |
1501 | new_cpu = true; | |
1502 | } | |
1503 | } else | |
1504 | cpus_nr = sched->max_cpu; | |
1505 | ||
0e9b07e5 ACM |
1506 | timestamp0 = sched->cpu_last_switched[this_cpu]; |
1507 | sched->cpu_last_switched[this_cpu] = timestamp; | |
0ec04e16 IM |
1508 | if (timestamp0) |
1509 | delta = timestamp - timestamp0; | |
1510 | else | |
1511 | delta = 0; | |
1512 | ||
a116e05d | 1513 | if (delta < 0) { |
60b7d14a | 1514 | pr_err("hm, delta: %" PRIu64 " < 0 ?\n", delta); |
a116e05d ACM |
1515 | return -1; |
1516 | } | |
0ec04e16 | 1517 | |
a151a37a | 1518 | sched_in = map__findnew_thread(sched, machine, -1, next_pid); |
b91fc39f ACM |
1519 | if (sched_in == NULL) |
1520 | return -1; | |
0ec04e16 | 1521 | |
b91fc39f | 1522 | sched->curr_thread[this_cpu] = thread__get(sched_in); |
0ec04e16 IM |
1523 | |
1524 | printf(" "); | |
1525 | ||
1526 | new_shortname = 0; | |
1527 | if (!sched_in->shortname[0]) { | |
6bcab4e1 D |
1528 | if (!strcmp(thread__comm_str(sched_in), "swapper")) { |
1529 | /* | |
1530 | * Don't allocate a letter-number for swapper:0 | |
1531 | * as a shortname. Instead, we use '.' for it. | |
1532 | */ | |
1533 | sched_in->shortname[0] = '.'; | |
1534 | sched_in->shortname[1] = ' '; | |
0ec04e16 | 1535 | } else { |
6bcab4e1 D |
1536 | sched_in->shortname[0] = sched->next_shortname1; |
1537 | sched_in->shortname[1] = sched->next_shortname2; | |
1538 | ||
1539 | if (sched->next_shortname1 < 'Z') { | |
1540 | sched->next_shortname1++; | |
0ec04e16 | 1541 | } else { |
6bcab4e1 D |
1542 | sched->next_shortname1 = 'A'; |
1543 | if (sched->next_shortname2 < '9') | |
1544 | sched->next_shortname2++; | |
1545 | else | |
1546 | sched->next_shortname2 = '0'; | |
0ec04e16 IM |
1547 | } |
1548 | } | |
1549 | new_shortname = 1; | |
1550 | } | |
1551 | ||
99623c62 JO |
1552 | for (i = 0; i < cpus_nr; i++) { |
1553 | int cpu = sched->map.comp ? sched->map.comp_cpus[i] : i; | |
a151a37a JO |
1554 | struct thread *curr_thread = sched->curr_thread[cpu]; |
1555 | const char *pid_color = color; | |
cf294f24 | 1556 | const char *cpu_color = color; |
a151a37a JO |
1557 | |
1558 | if (curr_thread && thread__has_color(curr_thread)) | |
1559 | pid_color = COLOR_PIDS; | |
99623c62 | 1560 | |
73643bb6 JO |
1561 | if (sched->map.cpus && !cpu_map__has(sched->map.cpus, cpu)) |
1562 | continue; | |
1563 | ||
cf294f24 JO |
1564 | if (sched->map.color_cpus && cpu_map__has(sched->map.color_cpus, cpu)) |
1565 | cpu_color = COLOR_CPUS; | |
1566 | ||
0ec04e16 | 1567 | if (cpu != this_cpu) |
1208bb27 | 1568 | color_fprintf(stdout, color, " "); |
0ec04e16 | 1569 | else |
cf294f24 | 1570 | color_fprintf(stdout, cpu_color, "*"); |
0ec04e16 | 1571 | |
6bcab4e1 | 1572 | if (sched->curr_thread[cpu]) |
a151a37a | 1573 | color_fprintf(stdout, pid_color, "%2s ", sched->curr_thread[cpu]->shortname); |
6bcab4e1 | 1574 | else |
8cd91195 | 1575 | color_fprintf(stdout, color, " "); |
0ec04e16 IM |
1576 | } |
1577 | ||
73643bb6 JO |
1578 | if (sched->map.cpus && !cpu_map__has(sched->map.cpus, this_cpu)) |
1579 | goto out; | |
1580 | ||
99620a5d NK |
1581 | timestamp__scnprintf_usec(timestamp, stimestamp, sizeof(stimestamp)); |
1582 | color_fprintf(stdout, color, " %12s secs ", stimestamp); | |
bb963e16 | 1583 | if (new_shortname || (verbose > 0 && sched_in->tid)) { |
a151a37a JO |
1584 | const char *pid_color = color; |
1585 | ||
1586 | if (thread__has_color(sched_in)) | |
1587 | pid_color = COLOR_PIDS; | |
1588 | ||
1589 | color_fprintf(stdout, pid_color, "%s => %s:%d", | |
b9c5143a | 1590 | sched_in->shortname, thread__comm_str(sched_in), sched_in->tid); |
0ec04e16 | 1591 | } |
a116e05d | 1592 | |
99623c62 | 1593 | if (sched->map.comp && new_cpu) |
8cd91195 | 1594 | color_fprintf(stdout, color, " (CPU %d)", this_cpu); |
99623c62 | 1595 | |
73643bb6 | 1596 | out: |
8cd91195 | 1597 | color_fprintf(stdout, color, "\n"); |
99623c62 | 1598 | |
b91fc39f ACM |
1599 | thread__put(sched_in); |
1600 | ||
a116e05d | 1601 | return 0; |
0ec04e16 IM |
1602 | } |
1603 | ||
0e9b07e5 | 1604 | static int process_sched_switch_event(struct perf_tool *tool, |
2b7fcbc5 | 1605 | struct perf_evsel *evsel, |
1d037ca1 | 1606 | struct perf_sample *sample, |
4218e673 | 1607 | struct machine *machine) |
419ab0d6 | 1608 | { |
0e9b07e5 | 1609 | struct perf_sched *sched = container_of(tool, struct perf_sched, tool); |
a116e05d | 1610 | int this_cpu = sample->cpu, err = 0; |
2b7fcbc5 ACM |
1611 | u32 prev_pid = perf_evsel__intval(evsel, sample, "prev_pid"), |
1612 | next_pid = perf_evsel__intval(evsel, sample, "next_pid"); | |
419ab0d6 | 1613 | |
0e9b07e5 | 1614 | if (sched->curr_pid[this_cpu] != (u32)-1) { |
c8a37751 IM |
1615 | /* |
1616 | * Are we trying to switch away a PID that is | |
1617 | * not current? | |
1618 | */ | |
2b7fcbc5 | 1619 | if (sched->curr_pid[this_cpu] != prev_pid) |
0e9b07e5 | 1620 | sched->nr_context_switch_bugs++; |
c8a37751 | 1621 | } |
c8a37751 | 1622 | |
9ec3f4e4 ACM |
1623 | if (sched->tp_handler->switch_event) |
1624 | err = sched->tp_handler->switch_event(sched, evsel, sample, machine); | |
2b7fcbc5 ACM |
1625 | |
1626 | sched->curr_pid[this_cpu] = next_pid; | |
a116e05d | 1627 | return err; |
419ab0d6 FW |
1628 | } |
1629 | ||
0e9b07e5 | 1630 | static int process_sched_runtime_event(struct perf_tool *tool, |
2b7fcbc5 | 1631 | struct perf_evsel *evsel, |
1d037ca1 | 1632 | struct perf_sample *sample, |
4218e673 | 1633 | struct machine *machine) |
39aeb52f | 1634 | { |
0e9b07e5 | 1635 | struct perf_sched *sched = container_of(tool, struct perf_sched, tool); |
39aeb52f | 1636 | |
9ec3f4e4 ACM |
1637 | if (sched->tp_handler->runtime_event) |
1638 | return sched->tp_handler->runtime_event(sched, evsel, sample, machine); | |
a116e05d | 1639 | |
2b7fcbc5 | 1640 | return 0; |
39aeb52f | 1641 | } |
1642 | ||
cb627505 DA |
1643 | static int perf_sched__process_fork_event(struct perf_tool *tool, |
1644 | union perf_event *event, | |
1645 | struct perf_sample *sample, | |
1646 | struct machine *machine) | |
fbf94829 | 1647 | { |
0e9b07e5 | 1648 | struct perf_sched *sched = container_of(tool, struct perf_sched, tool); |
46538818 | 1649 | |
cb627505 DA |
1650 | /* run the fork event through the perf machineruy */ |
1651 | perf_event__process_fork(tool, event, sample, machine); | |
1652 | ||
1653 | /* and then run additional processing needed for this command */ | |
9ec3f4e4 | 1654 | if (sched->tp_handler->fork_event) |
cb627505 | 1655 | return sched->tp_handler->fork_event(sched, event, machine); |
a116e05d | 1656 | |
2b7fcbc5 | 1657 | return 0; |
fbf94829 IM |
1658 | } |
1659 | ||
0e9b07e5 | 1660 | static int process_sched_migrate_task_event(struct perf_tool *tool, |
2b7fcbc5 | 1661 | struct perf_evsel *evsel, |
1d037ca1 | 1662 | struct perf_sample *sample, |
4218e673 | 1663 | struct machine *machine) |
55ffb7a6 | 1664 | { |
0e9b07e5 | 1665 | struct perf_sched *sched = container_of(tool, struct perf_sched, tool); |
55ffb7a6 | 1666 | |
9ec3f4e4 ACM |
1667 | if (sched->tp_handler->migrate_task_event) |
1668 | return sched->tp_handler->migrate_task_event(sched, evsel, sample, machine); | |
a116e05d | 1669 | |
2b7fcbc5 | 1670 | return 0; |
55ffb7a6 MG |
1671 | } |
1672 | ||
a116e05d | 1673 | typedef int (*tracepoint_handler)(struct perf_tool *tool, |
2b7fcbc5 | 1674 | struct perf_evsel *evsel, |
a116e05d | 1675 | struct perf_sample *sample, |
4218e673 | 1676 | struct machine *machine); |
ec156764 | 1677 | |
1d037ca1 IT |
1678 | static int perf_sched__process_tracepoint_sample(struct perf_tool *tool __maybe_unused, |
1679 | union perf_event *event __maybe_unused, | |
ee29be62 ACM |
1680 | struct perf_sample *sample, |
1681 | struct perf_evsel *evsel, | |
1682 | struct machine *machine) | |
0a02ad93 | 1683 | { |
a116e05d | 1684 | int err = 0; |
0a02ad93 | 1685 | |
744a9719 ACM |
1686 | if (evsel->handler != NULL) { |
1687 | tracepoint_handler f = evsel->handler; | |
2b7fcbc5 | 1688 | err = f(tool, evsel, sample, machine); |
ee29be62 | 1689 | } |
0a02ad93 | 1690 | |
a116e05d | 1691 | return err; |
0a02ad93 IM |
1692 | } |
1693 | ||
ae536acf | 1694 | static int perf_sched__read_events(struct perf_sched *sched) |
0a02ad93 | 1695 | { |
ee29be62 ACM |
1696 | const struct perf_evsel_str_handler handlers[] = { |
1697 | { "sched:sched_switch", process_sched_switch_event, }, | |
1698 | { "sched:sched_stat_runtime", process_sched_runtime_event, }, | |
1699 | { "sched:sched_wakeup", process_sched_wakeup_event, }, | |
1700 | { "sched:sched_wakeup_new", process_sched_wakeup_event, }, | |
ee29be62 ACM |
1701 | { "sched:sched_migrate_task", process_sched_migrate_task_event, }, |
1702 | }; | |
da378962 | 1703 | struct perf_session *session; |
f5fc1412 JO |
1704 | struct perf_data_file file = { |
1705 | .path = input_name, | |
1706 | .mode = PERF_DATA_MODE_READ, | |
f0dd330f | 1707 | .force = sched->force, |
f5fc1412 | 1708 | }; |
ae536acf | 1709 | int rc = -1; |
da378962 | 1710 | |
f5fc1412 | 1711 | session = perf_session__new(&file, false, &sched->tool); |
a116e05d ACM |
1712 | if (session == NULL) { |
1713 | pr_debug("No Memory for session\n"); | |
1714 | return -1; | |
1715 | } | |
94c744b6 | 1716 | |
0a7e6d1b | 1717 | symbol__init(&session->header.env); |
04934106 | 1718 | |
a116e05d ACM |
1719 | if (perf_session__set_tracepoints_handlers(session, handlers)) |
1720 | goto out_delete; | |
ee29be62 | 1721 | |
cee75ac7 | 1722 | if (perf_session__has_traces(session, "record -R")) { |
b7b61cbe | 1723 | int err = perf_session__process_events(session); |
a116e05d ACM |
1724 | if (err) { |
1725 | pr_err("Failed to process events, error %d", err); | |
1726 | goto out_delete; | |
1727 | } | |
4c09bafa | 1728 | |
75be989a ACM |
1729 | sched->nr_events = session->evlist->stats.nr_events[0]; |
1730 | sched->nr_lost_events = session->evlist->stats.total_lost; | |
1731 | sched->nr_lost_chunks = session->evlist->stats.nr_events[PERF_RECORD_LOST]; | |
cee75ac7 | 1732 | } |
d549c769 | 1733 | |
ae536acf | 1734 | rc = 0; |
a116e05d ACM |
1735 | out_delete: |
1736 | perf_session__delete(session); | |
ae536acf | 1737 | return rc; |
0a02ad93 IM |
1738 | } |
1739 | ||
49394a2a DA |
1740 | /* |
1741 | * scheduling times are printed as msec.usec | |
1742 | */ | |
1743 | static inline void print_sched_time(unsigned long long nsecs, int width) | |
1744 | { | |
1745 | unsigned long msecs; | |
1746 | unsigned long usecs; | |
1747 | ||
1748 | msecs = nsecs / NSEC_PER_MSEC; | |
1749 | nsecs -= msecs * NSEC_PER_MSEC; | |
1750 | usecs = nsecs / NSEC_PER_USEC; | |
1751 | printf("%*lu.%03lu ", width, msecs, usecs); | |
1752 | } | |
1753 | ||
1754 | /* | |
1755 | * returns runtime data for event, allocating memory for it the | |
1756 | * first time it is used. | |
1757 | */ | |
1758 | static struct evsel_runtime *perf_evsel__get_runtime(struct perf_evsel *evsel) | |
1759 | { | |
1760 | struct evsel_runtime *r = evsel->priv; | |
1761 | ||
1762 | if (r == NULL) { | |
1763 | r = zalloc(sizeof(struct evsel_runtime)); | |
1764 | evsel->priv = r; | |
1765 | } | |
1766 | ||
1767 | return r; | |
1768 | } | |
1769 | ||
1770 | /* | |
1771 | * save last time event was seen per cpu | |
1772 | */ | |
1773 | static void perf_evsel__save_time(struct perf_evsel *evsel, | |
1774 | u64 timestamp, u32 cpu) | |
1775 | { | |
1776 | struct evsel_runtime *r = perf_evsel__get_runtime(evsel); | |
1777 | ||
1778 | if (r == NULL) | |
1779 | return; | |
1780 | ||
1781 | if ((cpu >= r->ncpu) || (r->last_time == NULL)) { | |
1782 | int i, n = __roundup_pow_of_two(cpu+1); | |
1783 | void *p = r->last_time; | |
1784 | ||
1785 | p = realloc(r->last_time, n * sizeof(u64)); | |
1786 | if (!p) | |
1787 | return; | |
1788 | ||
1789 | r->last_time = p; | |
1790 | for (i = r->ncpu; i < n; ++i) | |
1791 | r->last_time[i] = (u64) 0; | |
1792 | ||
1793 | r->ncpu = n; | |
1794 | } | |
1795 | ||
1796 | r->last_time[cpu] = timestamp; | |
1797 | } | |
1798 | ||
1799 | /* returns last time this event was seen on the given cpu */ | |
1800 | static u64 perf_evsel__get_time(struct perf_evsel *evsel, u32 cpu) | |
1801 | { | |
1802 | struct evsel_runtime *r = perf_evsel__get_runtime(evsel); | |
1803 | ||
1804 | if ((r == NULL) || (r->last_time == NULL) || (cpu >= r->ncpu)) | |
1805 | return 0; | |
1806 | ||
1807 | return r->last_time[cpu]; | |
1808 | } | |
1809 | ||
9b8087d7 | 1810 | static int comm_width = 30; |
49394a2a DA |
1811 | |
1812 | static char *timehist_get_commstr(struct thread *thread) | |
1813 | { | |
1814 | static char str[32]; | |
1815 | const char *comm = thread__comm_str(thread); | |
1816 | pid_t tid = thread->tid; | |
1817 | pid_t pid = thread->pid_; | |
1818 | int n; | |
1819 | ||
1820 | if (pid == 0) | |
1821 | n = scnprintf(str, sizeof(str), "%s", comm); | |
1822 | ||
1823 | else if (tid != pid) | |
1824 | n = scnprintf(str, sizeof(str), "%s[%d/%d]", comm, tid, pid); | |
1825 | ||
1826 | else | |
1827 | n = scnprintf(str, sizeof(str), "%s[%d]", comm, tid); | |
1828 | ||
1829 | if (n > comm_width) | |
1830 | comm_width = n; | |
1831 | ||
1832 | return str; | |
1833 | } | |
1834 | ||
a407b067 | 1835 | static void timehist_header(struct perf_sched *sched) |
49394a2a | 1836 | { |
a407b067 DA |
1837 | u32 ncpus = sched->max_cpu + 1; |
1838 | u32 i, j; | |
1839 | ||
49394a2a DA |
1840 | printf("%15s %6s ", "time", "cpu"); |
1841 | ||
a407b067 DA |
1842 | if (sched->show_cpu_visual) { |
1843 | printf(" "); | |
1844 | for (i = 0, j = 0; i < ncpus; ++i) { | |
1845 | printf("%x", j++); | |
1846 | if (j > 15) | |
1847 | j = 0; | |
1848 | } | |
1849 | printf(" "); | |
1850 | } | |
1851 | ||
0e6758e8 | 1852 | printf(" %-*s %9s %9s %9s", comm_width, |
49394a2a DA |
1853 | "task name", "wait time", "sch delay", "run time"); |
1854 | ||
414e050c NK |
1855 | if (sched->show_state) |
1856 | printf(" %s", "state"); | |
1857 | ||
49394a2a DA |
1858 | printf("\n"); |
1859 | ||
1860 | /* | |
1861 | * units row | |
1862 | */ | |
1863 | printf("%15s %-6s ", "", ""); | |
1864 | ||
a407b067 DA |
1865 | if (sched->show_cpu_visual) |
1866 | printf(" %*s ", ncpus, ""); | |
1867 | ||
414e050c | 1868 | printf(" %-*s %9s %9s %9s", comm_width, |
0e6758e8 | 1869 | "[tid/pid]", "(msec)", "(msec)", "(msec)"); |
49394a2a | 1870 | |
414e050c NK |
1871 | if (sched->show_state) |
1872 | printf(" %5s", ""); | |
1873 | ||
1874 | printf("\n"); | |
1875 | ||
49394a2a DA |
1876 | /* |
1877 | * separator | |
1878 | */ | |
1879 | printf("%.15s %.6s ", graph_dotted_line, graph_dotted_line); | |
1880 | ||
a407b067 DA |
1881 | if (sched->show_cpu_visual) |
1882 | printf(" %.*s ", ncpus, graph_dotted_line); | |
1883 | ||
0e6758e8 | 1884 | printf(" %.*s %.9s %.9s %.9s", comm_width, |
49394a2a DA |
1885 | graph_dotted_line, graph_dotted_line, graph_dotted_line, |
1886 | graph_dotted_line); | |
1887 | ||
414e050c NK |
1888 | if (sched->show_state) |
1889 | printf(" %.5s", graph_dotted_line); | |
1890 | ||
49394a2a DA |
1891 | printf("\n"); |
1892 | } | |
1893 | ||
414e050c NK |
1894 | static char task_state_char(struct thread *thread, int state) |
1895 | { | |
1896 | static const char state_to_char[] = TASK_STATE_TO_CHAR_STR; | |
1897 | unsigned bit = state ? ffs(state) : 0; | |
1898 | ||
1899 | /* 'I' for idle */ | |
1900 | if (thread->tid == 0) | |
1901 | return 'I'; | |
1902 | ||
1903 | return bit < sizeof(state_to_char) - 1 ? state_to_char[bit] : '?'; | |
1904 | } | |
1905 | ||
fc1469f1 | 1906 | static void timehist_print_sample(struct perf_sched *sched, |
292c4a8f | 1907 | struct perf_evsel *evsel, |
fc1469f1 | 1908 | struct perf_sample *sample, |
6c973c90 | 1909 | struct addr_location *al, |
853b7407 | 1910 | struct thread *thread, |
414e050c | 1911 | u64 t, int state) |
49394a2a DA |
1912 | { |
1913 | struct thread_runtime *tr = thread__priv(thread); | |
292c4a8f BG |
1914 | const char *next_comm = perf_evsel__strval(evsel, sample, "next_comm"); |
1915 | const u32 next_pid = perf_evsel__intval(evsel, sample, "next_pid"); | |
a407b067 | 1916 | u32 max_cpus = sched->max_cpu + 1; |
49394a2a | 1917 | char tstr[64]; |
292c4a8f | 1918 | char nstr[30]; |
941bdea7 | 1919 | u64 wait_time; |
49394a2a | 1920 | |
853b7407 | 1921 | timestamp__scnprintf_usec(t, tstr, sizeof(tstr)); |
49394a2a DA |
1922 | printf("%15s [%04d] ", tstr, sample->cpu); |
1923 | ||
a407b067 DA |
1924 | if (sched->show_cpu_visual) { |
1925 | u32 i; | |
1926 | char c; | |
1927 | ||
1928 | printf(" "); | |
1929 | for (i = 0; i < max_cpus; ++i) { | |
1930 | /* flag idle times with 'i'; others are sched events */ | |
1931 | if (i == sample->cpu) | |
1932 | c = (thread->tid == 0) ? 'i' : 's'; | |
1933 | else | |
1934 | c = ' '; | |
1935 | printf("%c", c); | |
1936 | } | |
1937 | printf(" "); | |
1938 | } | |
1939 | ||
49394a2a DA |
1940 | printf(" %-*s ", comm_width, timehist_get_commstr(thread)); |
1941 | ||
941bdea7 NK |
1942 | wait_time = tr->dt_sleep + tr->dt_iowait + tr->dt_preempt; |
1943 | print_sched_time(wait_time, 6); | |
1944 | ||
49394a2a DA |
1945 | print_sched_time(tr->dt_delay, 6); |
1946 | print_sched_time(tr->dt_run, 6); | |
fc1469f1 | 1947 | |
414e050c NK |
1948 | if (sched->show_state) |
1949 | printf(" %5c ", task_state_char(thread, state)); | |
1950 | ||
292c4a8f BG |
1951 | if (sched->show_next) { |
1952 | snprintf(nstr, sizeof(nstr), "next: %s[%d]", next_comm, next_pid); | |
1953 | printf(" %-*s", comm_width, nstr); | |
1954 | } | |
1955 | ||
1956 | if (sched->show_wakeups && !sched->show_next) | |
fc1469f1 DA |
1957 | printf(" %-*s", comm_width, ""); |
1958 | ||
6c973c90 DA |
1959 | if (thread->tid == 0) |
1960 | goto out; | |
1961 | ||
1962 | if (sched->show_callchain) | |
1963 | printf(" "); | |
1964 | ||
1965 | sample__fprintf_sym(sample, al, 0, | |
1966 | EVSEL__PRINT_SYM | EVSEL__PRINT_ONELINE | | |
2d9bbf6e NK |
1967 | EVSEL__PRINT_CALLCHAIN_ARROW | |
1968 | EVSEL__PRINT_SKIP_IGNORED, | |
6c973c90 DA |
1969 | &callchain_cursor, stdout); |
1970 | ||
1971 | out: | |
49394a2a DA |
1972 | printf("\n"); |
1973 | } | |
1974 | ||
1975 | /* | |
1976 | * Explanation of delta-time stats: | |
1977 | * | |
1978 | * t = time of current schedule out event | |
1979 | * tprev = time of previous sched out event | |
1980 | * also time of schedule-in event for current task | |
1981 | * last_time = time of last sched change event for current task | |
1982 | * (i.e, time process was last scheduled out) | |
1983 | * ready_to_run = time of wakeup for current task | |
1984 | * | |
1985 | * -----|------------|------------|------------|------ | |
1986 | * last ready tprev t | |
1987 | * time to run | |
1988 | * | |
1989 | * |-------- dt_wait --------| | |
1990 | * |- dt_delay -|-- dt_run --| | |
1991 | * | |
1992 | * dt_run = run time of current task | |
1993 | * dt_wait = time between last schedule out event for task and tprev | |
1994 | * represents time spent off the cpu | |
1995 | * dt_delay = time between wakeup and schedule-in of task | |
1996 | */ | |
1997 | ||
1998 | static void timehist_update_runtime_stats(struct thread_runtime *r, | |
1999 | u64 t, u64 tprev) | |
2000 | { | |
2001 | r->dt_delay = 0; | |
941bdea7 NK |
2002 | r->dt_sleep = 0; |
2003 | r->dt_iowait = 0; | |
2004 | r->dt_preempt = 0; | |
49394a2a | 2005 | r->dt_run = 0; |
941bdea7 | 2006 | |
49394a2a DA |
2007 | if (tprev) { |
2008 | r->dt_run = t - tprev; | |
2009 | if (r->ready_to_run) { | |
2010 | if (r->ready_to_run > tprev) | |
2011 | pr_debug("time travel: wakeup time for task > previous sched_switch event\n"); | |
2012 | else | |
2013 | r->dt_delay = tprev - r->ready_to_run; | |
2014 | } | |
2015 | ||
2016 | if (r->last_time > tprev) | |
2017 | pr_debug("time travel: last sched out time for task > previous sched_switch event\n"); | |
941bdea7 NK |
2018 | else if (r->last_time) { |
2019 | u64 dt_wait = tprev - r->last_time; | |
2020 | ||
2021 | if (r->last_state == TASK_RUNNING) | |
2022 | r->dt_preempt = dt_wait; | |
2023 | else if (r->last_state == TASK_UNINTERRUPTIBLE) | |
2024 | r->dt_iowait = dt_wait; | |
2025 | else | |
2026 | r->dt_sleep = dt_wait; | |
2027 | } | |
49394a2a DA |
2028 | } |
2029 | ||
2030 | update_stats(&r->run_stats, r->dt_run); | |
587782c5 NK |
2031 | |
2032 | r->total_run_time += r->dt_run; | |
2033 | r->total_delay_time += r->dt_delay; | |
2034 | r->total_sleep_time += r->dt_sleep; | |
2035 | r->total_iowait_time += r->dt_iowait; | |
2036 | r->total_preempt_time += r->dt_preempt; | |
49394a2a DA |
2037 | } |
2038 | ||
96039c7c NK |
2039 | static bool is_idle_sample(struct perf_sample *sample, |
2040 | struct perf_evsel *evsel) | |
49394a2a DA |
2041 | { |
2042 | /* pid 0 == swapper == idle task */ | |
96039c7c NK |
2043 | if (strcmp(perf_evsel__name(evsel), "sched:sched_switch") == 0) |
2044 | return perf_evsel__intval(evsel, sample, "prev_pid") == 0; | |
49394a2a | 2045 | |
96039c7c NK |
2046 | return sample->pid == 0; |
2047 | } | |
2048 | ||
2049 | static void save_task_callchain(struct perf_sched *sched, | |
2050 | struct perf_sample *sample, | |
2051 | struct perf_evsel *evsel, | |
2052 | struct machine *machine) | |
2053 | { | |
2054 | struct callchain_cursor *cursor = &callchain_cursor; | |
2055 | struct thread *thread; | |
6c973c90 DA |
2056 | |
2057 | /* want main thread for process - has maps */ | |
2058 | thread = machine__findnew_thread(machine, sample->pid, sample->pid); | |
2059 | if (thread == NULL) { | |
2060 | pr_debug("Failed to get thread for pid %d.\n", sample->pid); | |
96039c7c | 2061 | return; |
6c973c90 DA |
2062 | } |
2063 | ||
2064 | if (!symbol_conf.use_callchain || sample->callchain == NULL) | |
96039c7c | 2065 | return; |
6c973c90 DA |
2066 | |
2067 | if (thread__resolve_callchain(thread, cursor, evsel, sample, | |
8388deb3 | 2068 | NULL, NULL, sched->max_stack + 2) != 0) { |
bb963e16 | 2069 | if (verbose > 0) |
62d94b00 | 2070 | pr_err("Failed to resolve callchain. Skipping\n"); |
6c973c90 | 2071 | |
96039c7c | 2072 | return; |
6c973c90 | 2073 | } |
cdeb01bf | 2074 | |
6c973c90 | 2075 | callchain_cursor_commit(cursor); |
cdeb01bf NK |
2076 | |
2077 | while (true) { | |
2078 | struct callchain_cursor_node *node; | |
2079 | struct symbol *sym; | |
2080 | ||
2081 | node = callchain_cursor_current(cursor); | |
2082 | if (node == NULL) | |
2083 | break; | |
2084 | ||
2085 | sym = node->sym; | |
a7c3899c | 2086 | if (sym) { |
cdeb01bf NK |
2087 | if (!strcmp(sym->name, "schedule") || |
2088 | !strcmp(sym->name, "__schedule") || | |
2089 | !strcmp(sym->name, "preempt_schedule")) | |
2090 | sym->ignore = 1; | |
2091 | } | |
2092 | ||
2093 | callchain_cursor_advance(cursor); | |
2094 | } | |
49394a2a DA |
2095 | } |
2096 | ||
3bc2fa9c NK |
2097 | static int init_idle_thread(struct thread *thread) |
2098 | { | |
2099 | struct idle_thread_runtime *itr; | |
2100 | ||
2101 | thread__set_comm(thread, idle_comm, 0); | |
2102 | ||
2103 | itr = zalloc(sizeof(*itr)); | |
2104 | if (itr == NULL) | |
2105 | return -ENOMEM; | |
2106 | ||
2107 | init_stats(&itr->tr.run_stats); | |
2108 | callchain_init(&itr->callchain); | |
2109 | callchain_cursor_reset(&itr->cursor); | |
2110 | thread__set_priv(thread, itr); | |
2111 | ||
2112 | return 0; | |
2113 | } | |
2114 | ||
49394a2a DA |
2115 | /* |
2116 | * Track idle stats per cpu by maintaining a local thread | |
2117 | * struct for the idle task on each cpu. | |
2118 | */ | |
2119 | static int init_idle_threads(int ncpu) | |
2120 | { | |
3bc2fa9c | 2121 | int i, ret; |
49394a2a DA |
2122 | |
2123 | idle_threads = zalloc(ncpu * sizeof(struct thread *)); | |
2124 | if (!idle_threads) | |
2125 | return -ENOMEM; | |
2126 | ||
b336352b | 2127 | idle_max_cpu = ncpu; |
49394a2a DA |
2128 | |
2129 | /* allocate the actual thread struct if needed */ | |
2130 | for (i = 0; i < ncpu; ++i) { | |
2131 | idle_threads[i] = thread__new(0, 0); | |
2132 | if (idle_threads[i] == NULL) | |
2133 | return -ENOMEM; | |
2134 | ||
3bc2fa9c NK |
2135 | ret = init_idle_thread(idle_threads[i]); |
2136 | if (ret < 0) | |
2137 | return ret; | |
49394a2a DA |
2138 | } |
2139 | ||
2140 | return 0; | |
2141 | } | |
2142 | ||
2143 | static void free_idle_threads(void) | |
2144 | { | |
2145 | int i; | |
2146 | ||
2147 | if (idle_threads == NULL) | |
2148 | return; | |
2149 | ||
b336352b | 2150 | for (i = 0; i < idle_max_cpu; ++i) { |
49394a2a DA |
2151 | if ((idle_threads[i])) |
2152 | thread__delete(idle_threads[i]); | |
2153 | } | |
2154 | ||
2155 | free(idle_threads); | |
2156 | } | |
2157 | ||
2158 | static struct thread *get_idle_thread(int cpu) | |
2159 | { | |
2160 | /* | |
2161 | * expand/allocate array of pointers to local thread | |
2162 | * structs if needed | |
2163 | */ | |
2164 | if ((cpu >= idle_max_cpu) || (idle_threads == NULL)) { | |
2165 | int i, j = __roundup_pow_of_two(cpu+1); | |
2166 | void *p; | |
2167 | ||
2168 | p = realloc(idle_threads, j * sizeof(struct thread *)); | |
2169 | if (!p) | |
2170 | return NULL; | |
2171 | ||
2172 | idle_threads = (struct thread **) p; | |
b336352b | 2173 | for (i = idle_max_cpu; i < j; ++i) |
49394a2a DA |
2174 | idle_threads[i] = NULL; |
2175 | ||
2176 | idle_max_cpu = j; | |
2177 | } | |
2178 | ||
2179 | /* allocate a new thread struct if needed */ | |
2180 | if (idle_threads[cpu] == NULL) { | |
2181 | idle_threads[cpu] = thread__new(0, 0); | |
2182 | ||
2183 | if (idle_threads[cpu]) { | |
3bc2fa9c NK |
2184 | if (init_idle_thread(idle_threads[cpu]) < 0) |
2185 | return NULL; | |
49394a2a DA |
2186 | } |
2187 | } | |
2188 | ||
2189 | return idle_threads[cpu]; | |
2190 | } | |
2191 | ||
699b5b92 NK |
2192 | static void save_idle_callchain(struct idle_thread_runtime *itr, |
2193 | struct perf_sample *sample) | |
2194 | { | |
2195 | if (!symbol_conf.use_callchain || sample->callchain == NULL) | |
2196 | return; | |
2197 | ||
2198 | callchain_cursor__copy(&itr->cursor, &callchain_cursor); | |
2199 | } | |
2200 | ||
49394a2a DA |
2201 | /* |
2202 | * handle runtime stats saved per thread | |
2203 | */ | |
2204 | static struct thread_runtime *thread__init_runtime(struct thread *thread) | |
2205 | { | |
2206 | struct thread_runtime *r; | |
2207 | ||
2208 | r = zalloc(sizeof(struct thread_runtime)); | |
2209 | if (!r) | |
2210 | return NULL; | |
2211 | ||
2212 | init_stats(&r->run_stats); | |
2213 | thread__set_priv(thread, r); | |
2214 | ||
2215 | return r; | |
2216 | } | |
2217 | ||
2218 | static struct thread_runtime *thread__get_runtime(struct thread *thread) | |
2219 | { | |
2220 | struct thread_runtime *tr; | |
2221 | ||
2222 | tr = thread__priv(thread); | |
2223 | if (tr == NULL) { | |
2224 | tr = thread__init_runtime(thread); | |
2225 | if (tr == NULL) | |
2226 | pr_debug("Failed to malloc memory for runtime data.\n"); | |
2227 | } | |
2228 | ||
2229 | return tr; | |
2230 | } | |
2231 | ||
6c973c90 DA |
2232 | static struct thread *timehist_get_thread(struct perf_sched *sched, |
2233 | struct perf_sample *sample, | |
49394a2a DA |
2234 | struct machine *machine, |
2235 | struct perf_evsel *evsel) | |
2236 | { | |
2237 | struct thread *thread; | |
2238 | ||
96039c7c | 2239 | if (is_idle_sample(sample, evsel)) { |
49394a2a DA |
2240 | thread = get_idle_thread(sample->cpu); |
2241 | if (thread == NULL) | |
2242 | pr_err("Failed to get idle thread for cpu %d.\n", sample->cpu); | |
2243 | ||
2244 | } else { | |
5d92d96a NK |
2245 | /* there were samples with tid 0 but non-zero pid */ |
2246 | thread = machine__findnew_thread(machine, sample->pid, | |
2247 | sample->tid ?: sample->pid); | |
49394a2a DA |
2248 | if (thread == NULL) { |
2249 | pr_debug("Failed to get thread for tid %d. skipping sample.\n", | |
2250 | sample->tid); | |
2251 | } | |
96039c7c NK |
2252 | |
2253 | save_task_callchain(sched, sample, evsel, machine); | |
699b5b92 NK |
2254 | if (sched->idle_hist) { |
2255 | struct thread *idle; | |
2256 | struct idle_thread_runtime *itr; | |
2257 | ||
2258 | idle = get_idle_thread(sample->cpu); | |
2259 | if (idle == NULL) { | |
2260 | pr_err("Failed to get idle thread for cpu %d.\n", sample->cpu); | |
2261 | return NULL; | |
2262 | } | |
2263 | ||
2264 | itr = thread__priv(idle); | |
2265 | if (itr == NULL) | |
2266 | return NULL; | |
2267 | ||
2268 | itr->last_thread = thread; | |
2269 | ||
2270 | /* copy task callchain when entering to idle */ | |
2271 | if (perf_evsel__intval(evsel, sample, "next_pid") == 0) | |
2272 | save_idle_callchain(itr, sample); | |
2273 | } | |
49394a2a DA |
2274 | } |
2275 | ||
2276 | return thread; | |
2277 | } | |
2278 | ||
52df138c | 2279 | static bool timehist_skip_sample(struct perf_sched *sched, |
a4b2b6f5 NK |
2280 | struct thread *thread, |
2281 | struct perf_evsel *evsel, | |
2282 | struct perf_sample *sample) | |
49394a2a DA |
2283 | { |
2284 | bool rc = false; | |
2285 | ||
52df138c | 2286 | if (thread__is_filtered(thread)) { |
49394a2a | 2287 | rc = true; |
52df138c DA |
2288 | sched->skipped_samples++; |
2289 | } | |
49394a2a | 2290 | |
a4b2b6f5 NK |
2291 | if (sched->idle_hist) { |
2292 | if (strcmp(perf_evsel__name(evsel), "sched:sched_switch")) | |
2293 | rc = true; | |
2294 | else if (perf_evsel__intval(evsel, sample, "prev_pid") != 0 && | |
2295 | perf_evsel__intval(evsel, sample, "next_pid") != 0) | |
2296 | rc = true; | |
2297 | } | |
2298 | ||
49394a2a DA |
2299 | return rc; |
2300 | } | |
2301 | ||
fc1469f1 | 2302 | static void timehist_print_wakeup_event(struct perf_sched *sched, |
a4b2b6f5 | 2303 | struct perf_evsel *evsel, |
fc1469f1 DA |
2304 | struct perf_sample *sample, |
2305 | struct machine *machine, | |
2306 | struct thread *awakened) | |
2307 | { | |
2308 | struct thread *thread; | |
2309 | char tstr[64]; | |
2310 | ||
2311 | thread = machine__findnew_thread(machine, sample->pid, sample->tid); | |
2312 | if (thread == NULL) | |
2313 | return; | |
2314 | ||
2315 | /* show wakeup unless both awakee and awaker are filtered */ | |
a4b2b6f5 NK |
2316 | if (timehist_skip_sample(sched, thread, evsel, sample) && |
2317 | timehist_skip_sample(sched, awakened, evsel, sample)) { | |
fc1469f1 DA |
2318 | return; |
2319 | } | |
2320 | ||
2321 | timestamp__scnprintf_usec(sample->time, tstr, sizeof(tstr)); | |
2322 | printf("%15s [%04d] ", tstr, sample->cpu); | |
a407b067 DA |
2323 | if (sched->show_cpu_visual) |
2324 | printf(" %*s ", sched->max_cpu + 1, ""); | |
fc1469f1 DA |
2325 | |
2326 | printf(" %-*s ", comm_width, timehist_get_commstr(thread)); | |
2327 | ||
2328 | /* dt spacer */ | |
2329 | printf(" %9s %9s %9s ", "", "", ""); | |
2330 | ||
2331 | printf("awakened: %s", timehist_get_commstr(awakened)); | |
2332 | ||
2333 | printf("\n"); | |
2334 | } | |
2335 | ||
2336 | static int timehist_sched_wakeup_event(struct perf_tool *tool, | |
49394a2a DA |
2337 | union perf_event *event __maybe_unused, |
2338 | struct perf_evsel *evsel, | |
2339 | struct perf_sample *sample, | |
2340 | struct machine *machine) | |
2341 | { | |
fc1469f1 | 2342 | struct perf_sched *sched = container_of(tool, struct perf_sched, tool); |
49394a2a DA |
2343 | struct thread *thread; |
2344 | struct thread_runtime *tr = NULL; | |
2345 | /* want pid of awakened task not pid in sample */ | |
2346 | const u32 pid = perf_evsel__intval(evsel, sample, "pid"); | |
2347 | ||
2348 | thread = machine__findnew_thread(machine, 0, pid); | |
2349 | if (thread == NULL) | |
2350 | return -1; | |
2351 | ||
2352 | tr = thread__get_runtime(thread); | |
2353 | if (tr == NULL) | |
2354 | return -1; | |
2355 | ||
2356 | if (tr->ready_to_run == 0) | |
2357 | tr->ready_to_run = sample->time; | |
2358 | ||
fc1469f1 | 2359 | /* show wakeups if requested */ |
853b7407 DA |
2360 | if (sched->show_wakeups && |
2361 | !perf_time__skip_sample(&sched->ptime, sample->time)) | |
a4b2b6f5 | 2362 | timehist_print_wakeup_event(sched, evsel, sample, machine, thread); |
fc1469f1 | 2363 | |
49394a2a DA |
2364 | return 0; |
2365 | } | |
2366 | ||
350f54fa DA |
2367 | static void timehist_print_migration_event(struct perf_sched *sched, |
2368 | struct perf_evsel *evsel, | |
2369 | struct perf_sample *sample, | |
2370 | struct machine *machine, | |
2371 | struct thread *migrated) | |
2372 | { | |
2373 | struct thread *thread; | |
2374 | char tstr[64]; | |
2375 | u32 max_cpus = sched->max_cpu + 1; | |
2376 | u32 ocpu, dcpu; | |
2377 | ||
2378 | if (sched->summary_only) | |
2379 | return; | |
2380 | ||
2381 | max_cpus = sched->max_cpu + 1; | |
2382 | ocpu = perf_evsel__intval(evsel, sample, "orig_cpu"); | |
2383 | dcpu = perf_evsel__intval(evsel, sample, "dest_cpu"); | |
2384 | ||
2385 | thread = machine__findnew_thread(machine, sample->pid, sample->tid); | |
2386 | if (thread == NULL) | |
2387 | return; | |
2388 | ||
a4b2b6f5 NK |
2389 | if (timehist_skip_sample(sched, thread, evsel, sample) && |
2390 | timehist_skip_sample(sched, migrated, evsel, sample)) { | |
350f54fa DA |
2391 | return; |
2392 | } | |
2393 | ||
2394 | timestamp__scnprintf_usec(sample->time, tstr, sizeof(tstr)); | |
2395 | printf("%15s [%04d] ", tstr, sample->cpu); | |
2396 | ||
2397 | if (sched->show_cpu_visual) { | |
2398 | u32 i; | |
2399 | char c; | |
2400 | ||
2401 | printf(" "); | |
2402 | for (i = 0; i < max_cpus; ++i) { | |
2403 | c = (i == sample->cpu) ? 'm' : ' '; | |
2404 | printf("%c", c); | |
2405 | } | |
2406 | printf(" "); | |
2407 | } | |
2408 | ||
2409 | printf(" %-*s ", comm_width, timehist_get_commstr(thread)); | |
2410 | ||
2411 | /* dt spacer */ | |
2412 | printf(" %9s %9s %9s ", "", "", ""); | |
2413 | ||
2414 | printf("migrated: %s", timehist_get_commstr(migrated)); | |
2415 | printf(" cpu %d => %d", ocpu, dcpu); | |
2416 | ||
2417 | printf("\n"); | |
2418 | } | |
2419 | ||
2420 | static int timehist_migrate_task_event(struct perf_tool *tool, | |
2421 | union perf_event *event __maybe_unused, | |
2422 | struct perf_evsel *evsel, | |
2423 | struct perf_sample *sample, | |
2424 | struct machine *machine) | |
2425 | { | |
2426 | struct perf_sched *sched = container_of(tool, struct perf_sched, tool); | |
2427 | struct thread *thread; | |
2428 | struct thread_runtime *tr = NULL; | |
2429 | /* want pid of migrated task not pid in sample */ | |
2430 | const u32 pid = perf_evsel__intval(evsel, sample, "pid"); | |
2431 | ||
2432 | thread = machine__findnew_thread(machine, 0, pid); | |
2433 | if (thread == NULL) | |
2434 | return -1; | |
2435 | ||
2436 | tr = thread__get_runtime(thread); | |
2437 | if (tr == NULL) | |
2438 | return -1; | |
2439 | ||
2440 | tr->migrations++; | |
2441 | ||
2442 | /* show migrations if requested */ | |
2443 | timehist_print_migration_event(sched, evsel, sample, machine, thread); | |
2444 | ||
2445 | return 0; | |
2446 | } | |
2447 | ||
52df138c | 2448 | static int timehist_sched_change_event(struct perf_tool *tool, |
49394a2a DA |
2449 | union perf_event *event, |
2450 | struct perf_evsel *evsel, | |
2451 | struct perf_sample *sample, | |
2452 | struct machine *machine) | |
2453 | { | |
fc1469f1 | 2454 | struct perf_sched *sched = container_of(tool, struct perf_sched, tool); |
853b7407 | 2455 | struct perf_time_interval *ptime = &sched->ptime; |
49394a2a DA |
2456 | struct addr_location al; |
2457 | struct thread *thread; | |
2458 | struct thread_runtime *tr = NULL; | |
853b7407 | 2459 | u64 tprev, t = sample->time; |
49394a2a | 2460 | int rc = 0; |
414e050c NK |
2461 | int state = perf_evsel__intval(evsel, sample, "prev_state"); |
2462 | ||
49394a2a DA |
2463 | |
2464 | if (machine__resolve(machine, &al, sample) < 0) { | |
2465 | pr_err("problem processing %d event. skipping it\n", | |
2466 | event->header.type); | |
2467 | rc = -1; | |
2468 | goto out; | |
2469 | } | |
2470 | ||
6c973c90 | 2471 | thread = timehist_get_thread(sched, sample, machine, evsel); |
49394a2a DA |
2472 | if (thread == NULL) { |
2473 | rc = -1; | |
2474 | goto out; | |
2475 | } | |
2476 | ||
a4b2b6f5 | 2477 | if (timehist_skip_sample(sched, thread, evsel, sample)) |
49394a2a DA |
2478 | goto out; |
2479 | ||
2480 | tr = thread__get_runtime(thread); | |
2481 | if (tr == NULL) { | |
2482 | rc = -1; | |
2483 | goto out; | |
2484 | } | |
2485 | ||
2486 | tprev = perf_evsel__get_time(evsel, sample->cpu); | |
2487 | ||
853b7407 DA |
2488 | /* |
2489 | * If start time given: | |
2490 | * - sample time is under window user cares about - skip sample | |
2491 | * - tprev is under window user cares about - reset to start of window | |
2492 | */ | |
2493 | if (ptime->start && ptime->start > t) | |
2494 | goto out; | |
2495 | ||
bdd75729 | 2496 | if (tprev && ptime->start > tprev) |
853b7407 DA |
2497 | tprev = ptime->start; |
2498 | ||
2499 | /* | |
2500 | * If end time given: | |
2501 | * - previous sched event is out of window - we are done | |
2502 | * - sample time is beyond window user cares about - reset it | |
2503 | * to close out stats for time window interest | |
2504 | */ | |
2505 | if (ptime->end) { | |
2506 | if (tprev > ptime->end) | |
2507 | goto out; | |
2508 | ||
2509 | if (t > ptime->end) | |
2510 | t = ptime->end; | |
2511 | } | |
2512 | ||
07235f84 NK |
2513 | if (!sched->idle_hist || thread->tid == 0) { |
2514 | timehist_update_runtime_stats(tr, t, tprev); | |
2515 | ||
2516 | if (sched->idle_hist) { | |
2517 | struct idle_thread_runtime *itr = (void *)tr; | |
2518 | struct thread_runtime *last_tr; | |
2519 | ||
2520 | BUG_ON(thread->tid != 0); | |
2521 | ||
2522 | if (itr->last_thread == NULL) | |
2523 | goto out; | |
2524 | ||
2525 | /* add current idle time as last thread's runtime */ | |
2526 | last_tr = thread__get_runtime(itr->last_thread); | |
2527 | if (last_tr == NULL) | |
2528 | goto out; | |
2529 | ||
2530 | timehist_update_runtime_stats(last_tr, t, tprev); | |
2531 | /* | |
2532 | * remove delta time of last thread as it's not updated | |
2533 | * and otherwise it will show an invalid value next | |
2534 | * time. we only care total run time and run stat. | |
2535 | */ | |
2536 | last_tr->dt_run = 0; | |
07235f84 | 2537 | last_tr->dt_delay = 0; |
941bdea7 NK |
2538 | last_tr->dt_sleep = 0; |
2539 | last_tr->dt_iowait = 0; | |
2540 | last_tr->dt_preempt = 0; | |
07235f84 | 2541 | |
ba957ebb NK |
2542 | if (itr->cursor.nr) |
2543 | callchain_append(&itr->callchain, &itr->cursor, t - tprev); | |
2544 | ||
07235f84 NK |
2545 | itr->last_thread = NULL; |
2546 | } | |
2547 | } | |
853b7407 | 2548 | |
52df138c | 2549 | if (!sched->summary_only) |
292c4a8f | 2550 | timehist_print_sample(sched, evsel, sample, &al, thread, t, state); |
49394a2a DA |
2551 | |
2552 | out: | |
9396c9cb NK |
2553 | if (sched->hist_time.start == 0 && t >= ptime->start) |
2554 | sched->hist_time.start = t; | |
2555 | if (ptime->end == 0 || t <= ptime->end) | |
2556 | sched->hist_time.end = t; | |
2557 | ||
49394a2a DA |
2558 | if (tr) { |
2559 | /* time of this sched_switch event becomes last time task seen */ | |
2560 | tr->last_time = sample->time; | |
2561 | ||
941bdea7 | 2562 | /* last state is used to determine where to account wait time */ |
414e050c | 2563 | tr->last_state = state; |
941bdea7 | 2564 | |
49394a2a DA |
2565 | /* sched out event for task so reset ready to run time */ |
2566 | tr->ready_to_run = 0; | |
2567 | } | |
2568 | ||
2569 | perf_evsel__save_time(evsel, sample->time, sample->cpu); | |
2570 | ||
2571 | return rc; | |
2572 | } | |
2573 | ||
2574 | static int timehist_sched_switch_event(struct perf_tool *tool, | |
2575 | union perf_event *event, | |
2576 | struct perf_evsel *evsel, | |
2577 | struct perf_sample *sample, | |
2578 | struct machine *machine __maybe_unused) | |
2579 | { | |
2580 | return timehist_sched_change_event(tool, event, evsel, sample, machine); | |
2581 | } | |
2582 | ||
2583 | static int process_lost(struct perf_tool *tool __maybe_unused, | |
2584 | union perf_event *event, | |
2585 | struct perf_sample *sample, | |
2586 | struct machine *machine __maybe_unused) | |
2587 | { | |
2588 | char tstr[64]; | |
2589 | ||
2590 | timestamp__scnprintf_usec(sample->time, tstr, sizeof(tstr)); | |
2591 | printf("%15s ", tstr); | |
2592 | printf("lost %" PRIu64 " events on cpu %d\n", event->lost.lost, sample->cpu); | |
2593 | ||
2594 | return 0; | |
2595 | } | |
2596 | ||
2597 | ||
52df138c DA |
2598 | static void print_thread_runtime(struct thread *t, |
2599 | struct thread_runtime *r) | |
2600 | { | |
2601 | double mean = avg_stats(&r->run_stats); | |
2602 | float stddev; | |
2603 | ||
2604 | printf("%*s %5d %9" PRIu64 " ", | |
2605 | comm_width, timehist_get_commstr(t), t->ppid, | |
2606 | (u64) r->run_stats.n); | |
2607 | ||
2608 | print_sched_time(r->total_run_time, 8); | |
2609 | stddev = rel_stddev_stats(stddev_stats(&r->run_stats), mean); | |
2610 | print_sched_time(r->run_stats.min, 6); | |
2611 | printf(" "); | |
2612 | print_sched_time((u64) mean, 6); | |
2613 | printf(" "); | |
2614 | print_sched_time(r->run_stats.max, 6); | |
2615 | printf(" "); | |
2616 | printf("%5.2f", stddev); | |
350f54fa | 2617 | printf(" %5" PRIu64, r->migrations); |
52df138c DA |
2618 | printf("\n"); |
2619 | } | |
2620 | ||
587782c5 NK |
2621 | static void print_thread_waittime(struct thread *t, |
2622 | struct thread_runtime *r) | |
2623 | { | |
2624 | printf("%*s %5d %9" PRIu64 " ", | |
2625 | comm_width, timehist_get_commstr(t), t->ppid, | |
2626 | (u64) r->run_stats.n); | |
2627 | ||
2628 | print_sched_time(r->total_run_time, 8); | |
2629 | print_sched_time(r->total_sleep_time, 6); | |
2630 | printf(" "); | |
2631 | print_sched_time(r->total_iowait_time, 6); | |
2632 | printf(" "); | |
2633 | print_sched_time(r->total_preempt_time, 6); | |
2634 | printf(" "); | |
2635 | print_sched_time(r->total_delay_time, 6); | |
2636 | printf("\n"); | |
2637 | } | |
2638 | ||
52df138c | 2639 | struct total_run_stats { |
587782c5 | 2640 | struct perf_sched *sched; |
52df138c DA |
2641 | u64 sched_count; |
2642 | u64 task_count; | |
2643 | u64 total_run_time; | |
2644 | }; | |
2645 | ||
2646 | static int __show_thread_runtime(struct thread *t, void *priv) | |
2647 | { | |
2648 | struct total_run_stats *stats = priv; | |
2649 | struct thread_runtime *r; | |
2650 | ||
2651 | if (thread__is_filtered(t)) | |
2652 | return 0; | |
2653 | ||
2654 | r = thread__priv(t); | |
2655 | if (r && r->run_stats.n) { | |
2656 | stats->task_count++; | |
2657 | stats->sched_count += r->run_stats.n; | |
2658 | stats->total_run_time += r->total_run_time; | |
587782c5 NK |
2659 | |
2660 | if (stats->sched->show_state) | |
2661 | print_thread_waittime(t, r); | |
2662 | else | |
2663 | print_thread_runtime(t, r); | |
52df138c DA |
2664 | } |
2665 | ||
2666 | return 0; | |
2667 | } | |
2668 | ||
2669 | static int show_thread_runtime(struct thread *t, void *priv) | |
2670 | { | |
2671 | if (t->dead) | |
2672 | return 0; | |
2673 | ||
2674 | return __show_thread_runtime(t, priv); | |
2675 | } | |
2676 | ||
2677 | static int show_deadthread_runtime(struct thread *t, void *priv) | |
2678 | { | |
2679 | if (!t->dead) | |
2680 | return 0; | |
2681 | ||
2682 | return __show_thread_runtime(t, priv); | |
2683 | } | |
2684 | ||
ba957ebb NK |
2685 | static size_t callchain__fprintf_folded(FILE *fp, struct callchain_node *node) |
2686 | { | |
2687 | const char *sep = " <- "; | |
2688 | struct callchain_list *chain; | |
2689 | size_t ret = 0; | |
2690 | char bf[1024]; | |
2691 | bool first; | |
2692 | ||
2693 | if (node == NULL) | |
2694 | return 0; | |
2695 | ||
2696 | ret = callchain__fprintf_folded(fp, node->parent); | |
2697 | first = (ret == 0); | |
2698 | ||
2699 | list_for_each_entry(chain, &node->val, list) { | |
2700 | if (chain->ip >= PERF_CONTEXT_MAX) | |
2701 | continue; | |
2702 | if (chain->ms.sym && chain->ms.sym->ignore) | |
2703 | continue; | |
2704 | ret += fprintf(fp, "%s%s", first ? "" : sep, | |
2705 | callchain_list__sym_name(chain, bf, sizeof(bf), | |
2706 | false)); | |
2707 | first = false; | |
2708 | } | |
2709 | ||
2710 | return ret; | |
2711 | } | |
2712 | ||
2713 | static size_t timehist_print_idlehist_callchain(struct rb_root *root) | |
2714 | { | |
2715 | size_t ret = 0; | |
2716 | FILE *fp = stdout; | |
2717 | struct callchain_node *chain; | |
2718 | struct rb_node *rb_node = rb_first(root); | |
2719 | ||
2720 | printf(" %16s %8s %s\n", "Idle time (msec)", "Count", "Callchains"); | |
2721 | printf(" %.16s %.8s %.50s\n", graph_dotted_line, graph_dotted_line, | |
2722 | graph_dotted_line); | |
2723 | ||
2724 | while (rb_node) { | |
2725 | chain = rb_entry(rb_node, struct callchain_node, rb_node); | |
2726 | rb_node = rb_next(rb_node); | |
2727 | ||
2728 | ret += fprintf(fp, " "); | |
2729 | print_sched_time(chain->hit, 12); | |
2730 | ret += 16; /* print_sched_time returns 2nd arg + 4 */ | |
2731 | ret += fprintf(fp, " %8d ", chain->count); | |
2732 | ret += callchain__fprintf_folded(fp, chain); | |
2733 | ret += fprintf(fp, "\n"); | |
2734 | } | |
2735 | ||
2736 | return ret; | |
2737 | } | |
2738 | ||
52df138c DA |
2739 | static void timehist_print_summary(struct perf_sched *sched, |
2740 | struct perf_session *session) | |
2741 | { | |
2742 | struct machine *m = &session->machines.host; | |
2743 | struct total_run_stats totals; | |
2744 | u64 task_count; | |
2745 | struct thread *t; | |
2746 | struct thread_runtime *r; | |
2747 | int i; | |
9396c9cb | 2748 | u64 hist_time = sched->hist_time.end - sched->hist_time.start; |
52df138c DA |
2749 | |
2750 | memset(&totals, 0, sizeof(totals)); | |
587782c5 | 2751 | totals.sched = sched; |
52df138c | 2752 | |
07235f84 NK |
2753 | if (sched->idle_hist) { |
2754 | printf("\nIdle-time summary\n"); | |
2755 | printf("%*s parent sched-out ", comm_width, "comm"); | |
2756 | printf(" idle-time min-idle avg-idle max-idle stddev migrations\n"); | |
587782c5 NK |
2757 | } else if (sched->show_state) { |
2758 | printf("\nWait-time summary\n"); | |
2759 | printf("%*s parent sched-in ", comm_width, "comm"); | |
2760 | printf(" run-time sleep iowait preempt delay\n"); | |
07235f84 NK |
2761 | } else { |
2762 | printf("\nRuntime summary\n"); | |
2763 | printf("%*s parent sched-in ", comm_width, "comm"); | |
2764 | printf(" run-time min-run avg-run max-run stddev migrations\n"); | |
2765 | } | |
52df138c | 2766 | printf("%*s (count) ", comm_width, ""); |
587782c5 NK |
2767 | printf(" (msec) (msec) (msec) (msec) %s\n", |
2768 | sched->show_state ? "(msec)" : "%"); | |
350f54fa | 2769 | printf("%.117s\n", graph_dotted_line); |
52df138c DA |
2770 | |
2771 | machine__for_each_thread(m, show_thread_runtime, &totals); | |
2772 | task_count = totals.task_count; | |
2773 | if (!task_count) | |
2774 | printf("<no still running tasks>\n"); | |
2775 | ||
2776 | printf("\nTerminated tasks:\n"); | |
2777 | machine__for_each_thread(m, show_deadthread_runtime, &totals); | |
2778 | if (task_count == totals.task_count) | |
2779 | printf("<no terminated tasks>\n"); | |
2780 | ||
2781 | /* CPU idle stats not tracked when samples were skipped */ | |
07235f84 | 2782 | if (sched->skipped_samples && !sched->idle_hist) |
52df138c DA |
2783 | return; |
2784 | ||
2785 | printf("\nIdle stats:\n"); | |
b336352b | 2786 | for (i = 0; i < idle_max_cpu; ++i) { |
52df138c DA |
2787 | t = idle_threads[i]; |
2788 | if (!t) | |
2789 | continue; | |
2790 | ||
2791 | r = thread__priv(t); | |
2792 | if (r && r->run_stats.n) { | |
2793 | totals.sched_count += r->run_stats.n; | |
2794 | printf(" CPU %2d idle for ", i); | |
2795 | print_sched_time(r->total_run_time, 6); | |
9396c9cb | 2796 | printf(" msec (%6.2f%%)\n", 100.0 * r->total_run_time / hist_time); |
52df138c DA |
2797 | } else |
2798 | printf(" CPU %2d idle entire time window\n", i); | |
2799 | } | |
2800 | ||
ba957ebb NK |
2801 | if (sched->idle_hist && symbol_conf.use_callchain) { |
2802 | callchain_param.mode = CHAIN_FOLDED; | |
2803 | callchain_param.value = CCVAL_PERIOD; | |
2804 | ||
2805 | callchain_register_param(&callchain_param); | |
2806 | ||
2807 | printf("\nIdle stats by callchain:\n"); | |
2808 | for (i = 0; i < idle_max_cpu; ++i) { | |
2809 | struct idle_thread_runtime *itr; | |
2810 | ||
2811 | t = idle_threads[i]; | |
2812 | if (!t) | |
2813 | continue; | |
2814 | ||
2815 | itr = thread__priv(t); | |
2816 | if (itr == NULL) | |
2817 | continue; | |
2818 | ||
2819 | callchain_param.sort(&itr->sorted_root, &itr->callchain, | |
2820 | 0, &callchain_param); | |
2821 | ||
2822 | printf(" CPU %2d:", i); | |
2823 | print_sched_time(itr->tr.total_run_time, 6); | |
2824 | printf(" msec\n"); | |
2825 | timehist_print_idlehist_callchain(&itr->sorted_root); | |
2826 | printf("\n"); | |
2827 | } | |
2828 | } | |
2829 | ||
52df138c DA |
2830 | printf("\n" |
2831 | " Total number of unique tasks: %" PRIu64 "\n" | |
9396c9cb | 2832 | "Total number of context switches: %" PRIu64 "\n", |
52df138c DA |
2833 | totals.task_count, totals.sched_count); |
2834 | ||
9396c9cb | 2835 | printf(" Total run time (msec): "); |
52df138c DA |
2836 | print_sched_time(totals.total_run_time, 2); |
2837 | printf("\n"); | |
9396c9cb NK |
2838 | |
2839 | printf(" Total scheduling time (msec): "); | |
2840 | print_sched_time(hist_time, 2); | |
2841 | printf(" (x %d)\n", sched->max_cpu); | |
52df138c DA |
2842 | } |
2843 | ||
49394a2a DA |
2844 | typedef int (*sched_handler)(struct perf_tool *tool, |
2845 | union perf_event *event, | |
2846 | struct perf_evsel *evsel, | |
2847 | struct perf_sample *sample, | |
2848 | struct machine *machine); | |
2849 | ||
2850 | static int perf_timehist__process_sample(struct perf_tool *tool, | |
2851 | union perf_event *event, | |
2852 | struct perf_sample *sample, | |
2853 | struct perf_evsel *evsel, | |
2854 | struct machine *machine) | |
2855 | { | |
2856 | struct perf_sched *sched = container_of(tool, struct perf_sched, tool); | |
2857 | int err = 0; | |
2858 | int this_cpu = sample->cpu; | |
2859 | ||
2860 | if (this_cpu > sched->max_cpu) | |
2861 | sched->max_cpu = this_cpu; | |
2862 | ||
2863 | if (evsel->handler != NULL) { | |
2864 | sched_handler f = evsel->handler; | |
2865 | ||
2866 | err = f(tool, event, evsel, sample, machine); | |
2867 | } | |
2868 | ||
2869 | return err; | |
2870 | } | |
2871 | ||
6c973c90 DA |
2872 | static int timehist_check_attr(struct perf_sched *sched, |
2873 | struct perf_evlist *evlist) | |
2874 | { | |
2875 | struct perf_evsel *evsel; | |
2876 | struct evsel_runtime *er; | |
2877 | ||
2878 | list_for_each_entry(evsel, &evlist->entries, node) { | |
2879 | er = perf_evsel__get_runtime(evsel); | |
2880 | if (er == NULL) { | |
2881 | pr_err("Failed to allocate memory for evsel runtime data\n"); | |
2882 | return -1; | |
2883 | } | |
2884 | ||
2885 | if (sched->show_callchain && | |
2886 | !(evsel->attr.sample_type & PERF_SAMPLE_CALLCHAIN)) { | |
2887 | pr_info("Samples do not have callchains.\n"); | |
2888 | sched->show_callchain = 0; | |
2889 | symbol_conf.use_callchain = 0; | |
2890 | } | |
2891 | } | |
2892 | ||
2893 | return 0; | |
2894 | } | |
2895 | ||
49394a2a DA |
2896 | static int perf_sched__timehist(struct perf_sched *sched) |
2897 | { | |
2898 | const struct perf_evsel_str_handler handlers[] = { | |
2899 | { "sched:sched_switch", timehist_sched_switch_event, }, | |
2900 | { "sched:sched_wakeup", timehist_sched_wakeup_event, }, | |
2901 | { "sched:sched_wakeup_new", timehist_sched_wakeup_event, }, | |
2902 | }; | |
350f54fa DA |
2903 | const struct perf_evsel_str_handler migrate_handlers[] = { |
2904 | { "sched:sched_migrate_task", timehist_migrate_task_event, }, | |
2905 | }; | |
49394a2a DA |
2906 | struct perf_data_file file = { |
2907 | .path = input_name, | |
2908 | .mode = PERF_DATA_MODE_READ, | |
6fa94258 | 2909 | .force = sched->force, |
49394a2a DA |
2910 | }; |
2911 | ||
2912 | struct perf_session *session; | |
52df138c | 2913 | struct perf_evlist *evlist; |
49394a2a DA |
2914 | int err = -1; |
2915 | ||
2916 | /* | |
2917 | * event handlers for timehist option | |
2918 | */ | |
2919 | sched->tool.sample = perf_timehist__process_sample; | |
2920 | sched->tool.mmap = perf_event__process_mmap; | |
2921 | sched->tool.comm = perf_event__process_comm; | |
2922 | sched->tool.exit = perf_event__process_exit; | |
2923 | sched->tool.fork = perf_event__process_fork; | |
2924 | sched->tool.lost = process_lost; | |
2925 | sched->tool.attr = perf_event__process_attr; | |
2926 | sched->tool.tracing_data = perf_event__process_tracing_data; | |
2927 | sched->tool.build_id = perf_event__process_build_id; | |
2928 | ||
2929 | sched->tool.ordered_events = true; | |
2930 | sched->tool.ordering_requires_timestamps = true; | |
2931 | ||
6c973c90 DA |
2932 | symbol_conf.use_callchain = sched->show_callchain; |
2933 | ||
49394a2a DA |
2934 | session = perf_session__new(&file, false, &sched->tool); |
2935 | if (session == NULL) | |
2936 | return -ENOMEM; | |
2937 | ||
52df138c DA |
2938 | evlist = session->evlist; |
2939 | ||
49394a2a DA |
2940 | symbol__init(&session->header.env); |
2941 | ||
853b7407 DA |
2942 | if (perf_time__parse_str(&sched->ptime, sched->time_str) != 0) { |
2943 | pr_err("Invalid time string\n"); | |
2944 | return -EINVAL; | |
2945 | } | |
2946 | ||
6c973c90 DA |
2947 | if (timehist_check_attr(sched, evlist) != 0) |
2948 | goto out; | |
2949 | ||
49394a2a DA |
2950 | setup_pager(); |
2951 | ||
2952 | /* setup per-evsel handlers */ | |
2953 | if (perf_session__set_tracepoints_handlers(session, handlers)) | |
2954 | goto out; | |
2955 | ||
f45bf8d3 DA |
2956 | /* sched_switch event at a minimum needs to exist */ |
2957 | if (!perf_evlist__find_tracepoint_by_name(session->evlist, | |
2958 | "sched:sched_switch")) { | |
2959 | pr_err("No sched_switch events found. Have you run 'perf sched record'?\n"); | |
49394a2a | 2960 | goto out; |
f45bf8d3 | 2961 | } |
49394a2a | 2962 | |
350f54fa DA |
2963 | if (sched->show_migrations && |
2964 | perf_session__set_tracepoints_handlers(session, migrate_handlers)) | |
2965 | goto out; | |
2966 | ||
49394a2a DA |
2967 | /* pre-allocate struct for per-CPU idle stats */ |
2968 | sched->max_cpu = session->header.env.nr_cpus_online; | |
2969 | if (sched->max_cpu == 0) | |
2970 | sched->max_cpu = 4; | |
2971 | if (init_idle_threads(sched->max_cpu)) | |
2972 | goto out; | |
2973 | ||
52df138c DA |
2974 | /* summary_only implies summary option, but don't overwrite summary if set */ |
2975 | if (sched->summary_only) | |
2976 | sched->summary = sched->summary_only; | |
2977 | ||
2978 | if (!sched->summary_only) | |
a407b067 | 2979 | timehist_header(sched); |
49394a2a DA |
2980 | |
2981 | err = perf_session__process_events(session); | |
2982 | if (err) { | |
2983 | pr_err("Failed to process events, error %d", err); | |
2984 | goto out; | |
2985 | } | |
2986 | ||
52df138c DA |
2987 | sched->nr_events = evlist->stats.nr_events[0]; |
2988 | sched->nr_lost_events = evlist->stats.total_lost; | |
2989 | sched->nr_lost_chunks = evlist->stats.nr_events[PERF_RECORD_LOST]; | |
2990 | ||
2991 | if (sched->summary) | |
2992 | timehist_print_summary(sched, session); | |
2993 | ||
49394a2a DA |
2994 | out: |
2995 | free_idle_threads(); | |
2996 | perf_session__delete(session); | |
2997 | ||
2998 | return err; | |
2999 | } | |
3000 | ||
3001 | ||
0e9b07e5 | 3002 | static void print_bad_events(struct perf_sched *sched) |
0ec04e16 | 3003 | { |
0e9b07e5 | 3004 | if (sched->nr_unordered_timestamps && sched->nr_timestamps) { |
0ec04e16 | 3005 | printf(" INFO: %.3f%% unordered timestamps (%ld out of %ld)\n", |
0e9b07e5 ACM |
3006 | (double)sched->nr_unordered_timestamps/(double)sched->nr_timestamps*100.0, |
3007 | sched->nr_unordered_timestamps, sched->nr_timestamps); | |
0ec04e16 | 3008 | } |
0e9b07e5 | 3009 | if (sched->nr_lost_events && sched->nr_events) { |
0ec04e16 | 3010 | printf(" INFO: %.3f%% lost events (%ld out of %ld, in %ld chunks)\n", |
0e9b07e5 ACM |
3011 | (double)sched->nr_lost_events/(double)sched->nr_events * 100.0, |
3012 | sched->nr_lost_events, sched->nr_events, sched->nr_lost_chunks); | |
0ec04e16 | 3013 | } |
0e9b07e5 | 3014 | if (sched->nr_context_switch_bugs && sched->nr_timestamps) { |
0ec04e16 | 3015 | printf(" INFO: %.3f%% context switch bugs (%ld out of %ld)", |
0e9b07e5 ACM |
3016 | (double)sched->nr_context_switch_bugs/(double)sched->nr_timestamps*100.0, |
3017 | sched->nr_context_switch_bugs, sched->nr_timestamps); | |
3018 | if (sched->nr_lost_events) | |
0ec04e16 IM |
3019 | printf(" (due to lost events?)"); |
3020 | printf("\n"); | |
3021 | } | |
3022 | } | |
3023 | ||
2f80dd44 JB |
3024 | static void __merge_work_atoms(struct rb_root *root, struct work_atoms *data) |
3025 | { | |
3026 | struct rb_node **new = &(root->rb_node), *parent = NULL; | |
3027 | struct work_atoms *this; | |
3028 | const char *comm = thread__comm_str(data->thread), *this_comm; | |
3029 | ||
3030 | while (*new) { | |
3031 | int cmp; | |
3032 | ||
3033 | this = container_of(*new, struct work_atoms, node); | |
3034 | parent = *new; | |
3035 | ||
3036 | this_comm = thread__comm_str(this->thread); | |
3037 | cmp = strcmp(comm, this_comm); | |
3038 | if (cmp > 0) { | |
3039 | new = &((*new)->rb_left); | |
3040 | } else if (cmp < 0) { | |
3041 | new = &((*new)->rb_right); | |
3042 | } else { | |
3043 | this->num_merged++; | |
3044 | this->total_runtime += data->total_runtime; | |
3045 | this->nb_atoms += data->nb_atoms; | |
3046 | this->total_lat += data->total_lat; | |
3047 | list_splice(&data->work_list, &this->work_list); | |
3048 | if (this->max_lat < data->max_lat) { | |
3049 | this->max_lat = data->max_lat; | |
3050 | this->max_lat_at = data->max_lat_at; | |
3051 | } | |
3052 | zfree(&data); | |
3053 | return; | |
3054 | } | |
3055 | } | |
3056 | ||
3057 | data->num_merged++; | |
3058 | rb_link_node(&data->node, parent, new); | |
3059 | rb_insert_color(&data->node, root); | |
3060 | } | |
3061 | ||
3062 | static void perf_sched__merge_lat(struct perf_sched *sched) | |
3063 | { | |
3064 | struct work_atoms *data; | |
3065 | struct rb_node *node; | |
3066 | ||
3067 | if (sched->skip_merge) | |
3068 | return; | |
3069 | ||
3070 | while ((node = rb_first(&sched->atom_root))) { | |
3071 | rb_erase(node, &sched->atom_root); | |
3072 | data = rb_entry(node, struct work_atoms, node); | |
3073 | __merge_work_atoms(&sched->merged_atom_root, data); | |
3074 | } | |
3075 | } | |
3076 | ||
0e9b07e5 | 3077 | static int perf_sched__lat(struct perf_sched *sched) |
0ec04e16 IM |
3078 | { |
3079 | struct rb_node *next; | |
3080 | ||
3081 | setup_pager(); | |
ad9def7c | 3082 | |
ae536acf | 3083 | if (perf_sched__read_events(sched)) |
a116e05d | 3084 | return -1; |
ad9def7c | 3085 | |
2f80dd44 | 3086 | perf_sched__merge_lat(sched); |
0e9b07e5 | 3087 | perf_sched__sort_lat(sched); |
0ec04e16 | 3088 | |
80790e0b RR |
3089 | printf("\n -----------------------------------------------------------------------------------------------------------------\n"); |
3090 | printf(" Task | Runtime ms | Switches | Average delay ms | Maximum delay ms | Maximum delay at |\n"); | |
3091 | printf(" -----------------------------------------------------------------------------------------------------------------\n"); | |
0ec04e16 | 3092 | |
0e9b07e5 | 3093 | next = rb_first(&sched->sorted_atom_root); |
0ec04e16 IM |
3094 | |
3095 | while (next) { | |
3096 | struct work_atoms *work_list; | |
3097 | ||
3098 | work_list = rb_entry(next, struct work_atoms, node); | |
0e9b07e5 | 3099 | output_lat_thread(sched, work_list); |
0ec04e16 | 3100 | next = rb_next(next); |
ae536acf | 3101 | thread__zput(work_list->thread); |
0ec04e16 IM |
3102 | } |
3103 | ||
80790e0b | 3104 | printf(" -----------------------------------------------------------------------------------------------------------------\n"); |
9486aa38 | 3105 | printf(" TOTAL: |%11.3f ms |%9" PRIu64 " |\n", |
4fc76e49 | 3106 | (double)sched->all_runtime / NSEC_PER_MSEC, sched->all_count); |
0ec04e16 IM |
3107 | |
3108 | printf(" ---------------------------------------------------\n"); | |
3109 | ||
0e9b07e5 | 3110 | print_bad_events(sched); |
0ec04e16 IM |
3111 | printf("\n"); |
3112 | ||
a116e05d | 3113 | return 0; |
0ec04e16 IM |
3114 | } |
3115 | ||
99623c62 JO |
3116 | static int setup_map_cpus(struct perf_sched *sched) |
3117 | { | |
73643bb6 JO |
3118 | struct cpu_map *map; |
3119 | ||
99623c62 JO |
3120 | sched->max_cpu = sysconf(_SC_NPROCESSORS_CONF); |
3121 | ||
3122 | if (sched->map.comp) { | |
3123 | sched->map.comp_cpus = zalloc(sched->max_cpu * sizeof(int)); | |
cf294f24 JO |
3124 | if (!sched->map.comp_cpus) |
3125 | return -1; | |
99623c62 JO |
3126 | } |
3127 | ||
73643bb6 JO |
3128 | if (!sched->map.cpus_str) |
3129 | return 0; | |
3130 | ||
3131 | map = cpu_map__new(sched->map.cpus_str); | |
3132 | if (!map) { | |
3133 | pr_err("failed to get cpus map from %s\n", sched->map.cpus_str); | |
3134 | return -1; | |
3135 | } | |
3136 | ||
3137 | sched->map.cpus = map; | |
99623c62 JO |
3138 | return 0; |
3139 | } | |
3140 | ||
a151a37a JO |
3141 | static int setup_color_pids(struct perf_sched *sched) |
3142 | { | |
3143 | struct thread_map *map; | |
3144 | ||
3145 | if (!sched->map.color_pids_str) | |
3146 | return 0; | |
3147 | ||
3148 | map = thread_map__new_by_tid_str(sched->map.color_pids_str); | |
3149 | if (!map) { | |
3150 | pr_err("failed to get thread map from %s\n", sched->map.color_pids_str); | |
3151 | return -1; | |
3152 | } | |
3153 | ||
3154 | sched->map.color_pids = map; | |
3155 | return 0; | |
3156 | } | |
3157 | ||
cf294f24 JO |
3158 | static int setup_color_cpus(struct perf_sched *sched) |
3159 | { | |
3160 | struct cpu_map *map; | |
3161 | ||
3162 | if (!sched->map.color_cpus_str) | |
3163 | return 0; | |
3164 | ||
3165 | map = cpu_map__new(sched->map.color_cpus_str); | |
3166 | if (!map) { | |
3167 | pr_err("failed to get thread map from %s\n", sched->map.color_cpus_str); | |
3168 | return -1; | |
3169 | } | |
3170 | ||
3171 | sched->map.color_cpus = map; | |
3172 | return 0; | |
3173 | } | |
3174 | ||
0e9b07e5 | 3175 | static int perf_sched__map(struct perf_sched *sched) |
0ec04e16 | 3176 | { |
99623c62 JO |
3177 | if (setup_map_cpus(sched)) |
3178 | return -1; | |
40749d0f | 3179 | |
a151a37a JO |
3180 | if (setup_color_pids(sched)) |
3181 | return -1; | |
3182 | ||
cf294f24 JO |
3183 | if (setup_color_cpus(sched)) |
3184 | return -1; | |
3185 | ||
0ec04e16 | 3186 | setup_pager(); |
ae536acf | 3187 | if (perf_sched__read_events(sched)) |
a116e05d | 3188 | return -1; |
0e9b07e5 | 3189 | print_bad_events(sched); |
a116e05d | 3190 | return 0; |
0ec04e16 IM |
3191 | } |
3192 | ||
0e9b07e5 | 3193 | static int perf_sched__replay(struct perf_sched *sched) |
0ec04e16 IM |
3194 | { |
3195 | unsigned long i; | |
3196 | ||
0e9b07e5 ACM |
3197 | calibrate_run_measurement_overhead(sched); |
3198 | calibrate_sleep_measurement_overhead(sched); | |
0ec04e16 | 3199 | |
0e9b07e5 | 3200 | test_calibrations(sched); |
0ec04e16 | 3201 | |
ae536acf | 3202 | if (perf_sched__read_events(sched)) |
a116e05d | 3203 | return -1; |
0ec04e16 | 3204 | |
0e9b07e5 ACM |
3205 | printf("nr_run_events: %ld\n", sched->nr_run_events); |
3206 | printf("nr_sleep_events: %ld\n", sched->nr_sleep_events); | |
3207 | printf("nr_wakeup_events: %ld\n", sched->nr_wakeup_events); | |
0ec04e16 | 3208 | |
0e9b07e5 ACM |
3209 | if (sched->targetless_wakeups) |
3210 | printf("target-less wakeups: %ld\n", sched->targetless_wakeups); | |
3211 | if (sched->multitarget_wakeups) | |
3212 | printf("multi-target wakeups: %ld\n", sched->multitarget_wakeups); | |
3213 | if (sched->nr_run_events_optimized) | |
0ec04e16 | 3214 | printf("run atoms optimized: %ld\n", |
0e9b07e5 | 3215 | sched->nr_run_events_optimized); |
0ec04e16 | 3216 | |
0e9b07e5 ACM |
3217 | print_task_traces(sched); |
3218 | add_cross_task_wakeups(sched); | |
0ec04e16 | 3219 | |
0e9b07e5 | 3220 | create_tasks(sched); |
0ec04e16 | 3221 | printf("------------------------------------------------------------\n"); |
0e9b07e5 ACM |
3222 | for (i = 0; i < sched->replay_repeat; i++) |
3223 | run_one_test(sched); | |
a116e05d ACM |
3224 | |
3225 | return 0; | |
0ec04e16 IM |
3226 | } |
3227 | ||
0e9b07e5 ACM |
3228 | static void setup_sorting(struct perf_sched *sched, const struct option *options, |
3229 | const char * const usage_msg[]) | |
daa1d7a5 | 3230 | { |
0e9b07e5 | 3231 | char *tmp, *tok, *str = strdup(sched->sort_order); |
daa1d7a5 FW |
3232 | |
3233 | for (tok = strtok_r(str, ", ", &tmp); | |
3234 | tok; tok = strtok_r(NULL, ", ", &tmp)) { | |
0e9b07e5 | 3235 | if (sort_dimension__add(tok, &sched->sort_list) < 0) { |
c7118369 NK |
3236 | usage_with_options_msg(usage_msg, options, |
3237 | "Unknown --sort key: `%s'", tok); | |
daa1d7a5 FW |
3238 | } |
3239 | } | |
3240 | ||
3241 | free(str); | |
3242 | ||
0e9b07e5 | 3243 | sort_dimension__add("pid", &sched->cmp_pid); |
daa1d7a5 FW |
3244 | } |
3245 | ||
1fc35b29 IM |
3246 | static int __cmd_record(int argc, const char **argv) |
3247 | { | |
3248 | unsigned int rec_argc, i, j; | |
3249 | const char **rec_argv; | |
0e9b07e5 ACM |
3250 | const char * const record_args[] = { |
3251 | "record", | |
3252 | "-a", | |
3253 | "-R", | |
0e9b07e5 ACM |
3254 | "-m", "1024", |
3255 | "-c", "1", | |
3256 | "-e", "sched:sched_switch", | |
3257 | "-e", "sched:sched_stat_wait", | |
3258 | "-e", "sched:sched_stat_sleep", | |
3259 | "-e", "sched:sched_stat_iowait", | |
3260 | "-e", "sched:sched_stat_runtime", | |
0e9b07e5 ACM |
3261 | "-e", "sched:sched_process_fork", |
3262 | "-e", "sched:sched_wakeup", | |
7fff9597 | 3263 | "-e", "sched:sched_wakeup_new", |
0e9b07e5 ACM |
3264 | "-e", "sched:sched_migrate_task", |
3265 | }; | |
1fc35b29 IM |
3266 | |
3267 | rec_argc = ARRAY_SIZE(record_args) + argc - 1; | |
3268 | rec_argv = calloc(rec_argc + 1, sizeof(char *)); | |
3269 | ||
e462dc55 | 3270 | if (rec_argv == NULL) |
ce47dc56 CS |
3271 | return -ENOMEM; |
3272 | ||
1fc35b29 IM |
3273 | for (i = 0; i < ARRAY_SIZE(record_args); i++) |
3274 | rec_argv[i] = strdup(record_args[i]); | |
3275 | ||
3276 | for (j = 1; j < (unsigned int)argc; j++, i++) | |
3277 | rec_argv[i] = argv[j]; | |
3278 | ||
3279 | BUG_ON(i != rec_argc); | |
3280 | ||
b0ad8ea6 | 3281 | return cmd_record(i, rec_argv); |
1fc35b29 IM |
3282 | } |
3283 | ||
b0ad8ea6 | 3284 | int cmd_sched(int argc, const char **argv) |
0a02ad93 | 3285 | { |
8a39df8f AH |
3286 | const char default_sort_order[] = "avg, max, switch, runtime"; |
3287 | struct perf_sched sched = { | |
3288 | .tool = { | |
3289 | .sample = perf_sched__process_tracepoint_sample, | |
3290 | .comm = perf_event__process_comm, | |
f3b3614a | 3291 | .namespaces = perf_event__process_namespaces, |
8a39df8f AH |
3292 | .lost = perf_event__process_lost, |
3293 | .fork = perf_sched__process_fork_event, | |
0a8cb85c | 3294 | .ordered_events = true, |
8a39df8f AH |
3295 | }, |
3296 | .cmp_pid = LIST_HEAD_INIT(sched.cmp_pid), | |
3297 | .sort_list = LIST_HEAD_INIT(sched.sort_list), | |
3298 | .start_work_mutex = PTHREAD_MUTEX_INITIALIZER, | |
3299 | .work_done_wait_mutex = PTHREAD_MUTEX_INITIALIZER, | |
8a39df8f AH |
3300 | .sort_order = default_sort_order, |
3301 | .replay_repeat = 10, | |
3302 | .profile_cpu = -1, | |
3303 | .next_shortname1 = 'A', | |
3304 | .next_shortname2 = '0', | |
2f80dd44 | 3305 | .skip_merge = 0, |
6c973c90 DA |
3306 | .show_callchain = 1, |
3307 | .max_stack = 5, | |
8a39df8f | 3308 | }; |
77f02f44 NK |
3309 | const struct option sched_options[] = { |
3310 | OPT_STRING('i', "input", &input_name, "file", | |
3311 | "input file name"), | |
3312 | OPT_INCR('v', "verbose", &verbose, | |
3313 | "be more verbose (show symbol address, etc)"), | |
3314 | OPT_BOOLEAN('D', "dump-raw-trace", &dump_trace, | |
3315 | "dump raw trace in ASCII"), | |
6fa94258 | 3316 | OPT_BOOLEAN('f', "force", &sched.force, "don't complain, do it"), |
77f02f44 NK |
3317 | OPT_END() |
3318 | }; | |
0e9b07e5 ACM |
3319 | const struct option latency_options[] = { |
3320 | OPT_STRING('s', "sort", &sched.sort_order, "key[,key2...]", | |
3321 | "sort by key(s): runtime, switch, avg, max"), | |
0e9b07e5 ACM |
3322 | OPT_INTEGER('C', "CPU", &sched.profile_cpu, |
3323 | "CPU to profile on"), | |
2f80dd44 JB |
3324 | OPT_BOOLEAN('p', "pids", &sched.skip_merge, |
3325 | "latency stats per pid instead of per comm"), | |
77f02f44 | 3326 | OPT_PARENT(sched_options) |
0e9b07e5 ACM |
3327 | }; |
3328 | const struct option replay_options[] = { | |
3329 | OPT_UINTEGER('r', "repeat", &sched.replay_repeat, | |
3330 | "repeat the workload replay N times (-1: infinite)"), | |
77f02f44 | 3331 | OPT_PARENT(sched_options) |
0e9b07e5 | 3332 | }; |
99623c62 JO |
3333 | const struct option map_options[] = { |
3334 | OPT_BOOLEAN(0, "compact", &sched.map.comp, | |
3335 | "map output in compact mode"), | |
a151a37a JO |
3336 | OPT_STRING(0, "color-pids", &sched.map.color_pids_str, "pids", |
3337 | "highlight given pids in map"), | |
cf294f24 JO |
3338 | OPT_STRING(0, "color-cpus", &sched.map.color_cpus_str, "cpus", |
3339 | "highlight given CPUs in map"), | |
73643bb6 JO |
3340 | OPT_STRING(0, "cpus", &sched.map.cpus_str, "cpus", |
3341 | "display given CPUs in map"), | |
77f02f44 | 3342 | OPT_PARENT(sched_options) |
99623c62 | 3343 | }; |
49394a2a DA |
3344 | const struct option timehist_options[] = { |
3345 | OPT_STRING('k', "vmlinux", &symbol_conf.vmlinux_name, | |
3346 | "file", "vmlinux pathname"), | |
3347 | OPT_STRING(0, "kallsyms", &symbol_conf.kallsyms_name, | |
3348 | "file", "kallsyms pathname"), | |
6c973c90 DA |
3349 | OPT_BOOLEAN('g', "call-graph", &sched.show_callchain, |
3350 | "Display call chains if present (default on)"), | |
3351 | OPT_UINTEGER(0, "max-stack", &sched.max_stack, | |
3352 | "Maximum number of functions to display backtrace."), | |
49394a2a DA |
3353 | OPT_STRING(0, "symfs", &symbol_conf.symfs, "directory", |
3354 | "Look for files with symbols relative to this directory"), | |
52df138c DA |
3355 | OPT_BOOLEAN('s', "summary", &sched.summary_only, |
3356 | "Show only syscall summary with statistics"), | |
3357 | OPT_BOOLEAN('S', "with-summary", &sched.summary, | |
3358 | "Show all syscalls and summary with statistics"), | |
fc1469f1 | 3359 | OPT_BOOLEAN('w', "wakeups", &sched.show_wakeups, "Show wakeup events"), |
292c4a8f | 3360 | OPT_BOOLEAN('n', "next", &sched.show_next, "Show next task"), |
350f54fa | 3361 | OPT_BOOLEAN('M', "migrations", &sched.show_migrations, "Show migration events"), |
a407b067 | 3362 | OPT_BOOLEAN('V', "cpu-visual", &sched.show_cpu_visual, "Add CPU visual"), |
07235f84 | 3363 | OPT_BOOLEAN('I', "idle-hist", &sched.idle_hist, "Show idle events only"), |
853b7407 DA |
3364 | OPT_STRING(0, "time", &sched.time_str, "str", |
3365 | "Time span for analysis (start,stop)"), | |
414e050c | 3366 | OPT_BOOLEAN(0, "state", &sched.show_state, "Show task state when sched-out"), |
49394a2a DA |
3367 | OPT_PARENT(sched_options) |
3368 | }; | |
3369 | ||
0e9b07e5 ACM |
3370 | const char * const latency_usage[] = { |
3371 | "perf sched latency [<options>]", | |
3372 | NULL | |
3373 | }; | |
3374 | const char * const replay_usage[] = { | |
3375 | "perf sched replay [<options>]", | |
3376 | NULL | |
3377 | }; | |
99623c62 JO |
3378 | const char * const map_usage[] = { |
3379 | "perf sched map [<options>]", | |
3380 | NULL | |
3381 | }; | |
49394a2a DA |
3382 | const char * const timehist_usage[] = { |
3383 | "perf sched timehist [<options>]", | |
3384 | NULL | |
3385 | }; | |
a83edb2d | 3386 | const char *const sched_subcommands[] = { "record", "latency", "map", |
49394a2a DA |
3387 | "replay", "script", |
3388 | "timehist", NULL }; | |
a83edb2d RR |
3389 | const char *sched_usage[] = { |
3390 | NULL, | |
0e9b07e5 ACM |
3391 | NULL |
3392 | }; | |
3393 | struct trace_sched_handler lat_ops = { | |
3394 | .wakeup_event = latency_wakeup_event, | |
3395 | .switch_event = latency_switch_event, | |
3396 | .runtime_event = latency_runtime_event, | |
0e9b07e5 ACM |
3397 | .migrate_task_event = latency_migrate_task_event, |
3398 | }; | |
3399 | struct trace_sched_handler map_ops = { | |
3400 | .switch_event = map_switch_event, | |
3401 | }; | |
3402 | struct trace_sched_handler replay_ops = { | |
3403 | .wakeup_event = replay_wakeup_event, | |
3404 | .switch_event = replay_switch_event, | |
3405 | .fork_event = replay_fork_event, | |
3406 | }; | |
156a2b02 AH |
3407 | unsigned int i; |
3408 | ||
3409 | for (i = 0; i < ARRAY_SIZE(sched.curr_pid); i++) | |
3410 | sched.curr_pid[i] = -1; | |
0e9b07e5 | 3411 | |
a83edb2d RR |
3412 | argc = parse_options_subcommand(argc, argv, sched_options, sched_subcommands, |
3413 | sched_usage, PARSE_OPT_STOP_AT_NON_OPTION); | |
f2858d8a IM |
3414 | if (!argc) |
3415 | usage_with_options(sched_usage, sched_options); | |
0a02ad93 | 3416 | |
c0777c5a | 3417 | /* |
133dc4c3 | 3418 | * Aliased to 'perf script' for now: |
c0777c5a | 3419 | */ |
133dc4c3 | 3420 | if (!strcmp(argv[0], "script")) |
b0ad8ea6 | 3421 | return cmd_script(argc, argv); |
c0777c5a | 3422 | |
1fc35b29 IM |
3423 | if (!strncmp(argv[0], "rec", 3)) { |
3424 | return __cmd_record(argc, argv); | |
3425 | } else if (!strncmp(argv[0], "lat", 3)) { | |
0e9b07e5 | 3426 | sched.tp_handler = &lat_ops; |
f2858d8a IM |
3427 | if (argc > 1) { |
3428 | argc = parse_options(argc, argv, latency_options, latency_usage, 0); | |
3429 | if (argc) | |
3430 | usage_with_options(latency_usage, latency_options); | |
f2858d8a | 3431 | } |
0e9b07e5 ACM |
3432 | setup_sorting(&sched, latency_options, latency_usage); |
3433 | return perf_sched__lat(&sched); | |
0ec04e16 | 3434 | } else if (!strcmp(argv[0], "map")) { |
99623c62 | 3435 | if (argc) { |
a151a37a | 3436 | argc = parse_options(argc, argv, map_options, map_usage, 0); |
99623c62 JO |
3437 | if (argc) |
3438 | usage_with_options(map_usage, map_options); | |
3439 | } | |
0e9b07e5 ACM |
3440 | sched.tp_handler = &map_ops; |
3441 | setup_sorting(&sched, latency_options, latency_usage); | |
3442 | return perf_sched__map(&sched); | |
f2858d8a | 3443 | } else if (!strncmp(argv[0], "rep", 3)) { |
0e9b07e5 | 3444 | sched.tp_handler = &replay_ops; |
f2858d8a IM |
3445 | if (argc) { |
3446 | argc = parse_options(argc, argv, replay_options, replay_usage, 0); | |
3447 | if (argc) | |
3448 | usage_with_options(replay_usage, replay_options); | |
3449 | } | |
0e9b07e5 | 3450 | return perf_sched__replay(&sched); |
49394a2a DA |
3451 | } else if (!strcmp(argv[0], "timehist")) { |
3452 | if (argc) { | |
3453 | argc = parse_options(argc, argv, timehist_options, | |
3454 | timehist_usage, 0); | |
3455 | if (argc) | |
3456 | usage_with_options(timehist_usage, timehist_options); | |
3457 | } | |
292c4a8f BG |
3458 | if ((sched.show_wakeups || sched.show_next) && |
3459 | sched.summary_only) { | |
3460 | pr_err(" Error: -s and -[n|w] are mutually exclusive.\n"); | |
fc1469f1 | 3461 | parse_options_usage(timehist_usage, timehist_options, "s", true); |
292c4a8f BG |
3462 | if (sched.show_wakeups) |
3463 | parse_options_usage(NULL, timehist_options, "w", true); | |
3464 | if (sched.show_next) | |
3465 | parse_options_usage(NULL, timehist_options, "n", true); | |
fc1469f1 DA |
3466 | return -EINVAL; |
3467 | } | |
3468 | ||
49394a2a | 3469 | return perf_sched__timehist(&sched); |
f2858d8a IM |
3470 | } else { |
3471 | usage_with_options(sched_usage, sched_options); | |
3472 | } | |
3473 | ||
ec156764 | 3474 | return 0; |
0a02ad93 | 3475 | } |