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b2441318 | 1 | // SPDX-License-Identifier: GPL-2.0 |
0a02ad93 | 2 | #include "builtin.h" |
b1ffe8f3 | 3 | #include "perf.h" |
91854f9a | 4 | #include "perf-sys.h" |
0a02ad93 | 5 | |
87ffb6c6 | 6 | #include "util/cpumap.h" |
ee29be62 | 7 | #include "util/evlist.h" |
e3f42609 | 8 | #include "util/evsel.h" |
ca125277 | 9 | #include "util/evsel_fprintf.h" |
0a02ad93 IM |
10 | #include "util/symbol.h" |
11 | #include "util/thread.h" | |
12 | #include "util/header.h" | |
94c744b6 | 13 | #include "util/session.h" |
45694aa7 | 14 | #include "util/tool.h" |
57480d2c | 15 | #include "util/cloexec.h" |
a151a37a | 16 | #include "util/thread_map.h" |
8cd91195 | 17 | #include "util/color.h" |
49394a2a | 18 | #include "util/stat.h" |
6a9fa4e3 | 19 | #include "util/string2.h" |
6c973c90 | 20 | #include "util/callchain.h" |
853b7407 | 21 | #include "util/time-utils.h" |
0a02ad93 | 22 | |
fa0d9846 | 23 | #include <subcmd/pager.h> |
4b6ab94e | 24 | #include <subcmd/parse-options.h> |
b1ffe8f3 | 25 | #include "util/trace-event.h" |
0a02ad93 | 26 | |
0a02ad93 | 27 | #include "util/debug.h" |
f12be047 | 28 | #include "util/event.h" |
0a02ad93 | 29 | |
877a7a11 | 30 | #include <linux/kernel.h> |
49394a2a | 31 | #include <linux/log2.h> |
7f7c536f | 32 | #include <linux/zalloc.h> |
b1ffe8f3 | 33 | #include <sys/prctl.h> |
7b78f136 | 34 | #include <sys/resource.h> |
fd20e811 | 35 | #include <inttypes.h> |
0a02ad93 | 36 | |
a43783ae | 37 | #include <errno.h> |
b1ffe8f3 IM |
38 | #include <semaphore.h> |
39 | #include <pthread.h> | |
40 | #include <math.h> | |
cb06ac25 | 41 | #include <api/fs/fs.h> |
87ffb6c6 | 42 | #include <perf/cpumap.h> |
4fc76e49 | 43 | #include <linux/time64.h> |
6ef81c55 | 44 | #include <linux/err.h> |
419ab0d6 | 45 | |
3052ba56 | 46 | #include <linux/ctype.h> |
3d689ed6 | 47 | |
b1ffe8f3 IM |
48 | #define PR_SET_NAME 15 /* Set process name */ |
49 | #define MAX_CPUS 4096 | |
b1ffe8f3 IM |
50 | #define COMM_LEN 20 |
51 | #define SYM_LEN 129 | |
a35e27d0 | 52 | #define MAX_PID 1024000 |
ec156764 | 53 | |
c30d630d DA |
54 | static const char *cpu_list; |
55 | static DECLARE_BITMAP(cpu_bitmap, MAX_NR_CPUS); | |
56 | ||
39aeb52f | 57 | struct sched_atom; |
ec156764 | 58 | |
b1ffe8f3 IM |
59 | struct task_desc { |
60 | unsigned long nr; | |
61 | unsigned long pid; | |
62 | char comm[COMM_LEN]; | |
ec156764 | 63 | |
b1ffe8f3 IM |
64 | unsigned long nr_events; |
65 | unsigned long curr_event; | |
39aeb52f | 66 | struct sched_atom **atoms; |
b1ffe8f3 IM |
67 | |
68 | pthread_t thread; | |
69 | sem_t sleep_sem; | |
ec156764 | 70 | |
b1ffe8f3 IM |
71 | sem_t ready_for_work; |
72 | sem_t work_done_sem; | |
73 | ||
74 | u64 cpu_usage; | |
75 | }; | |
76 | ||
77 | enum sched_event_type { | |
78 | SCHED_EVENT_RUN, | |
79 | SCHED_EVENT_SLEEP, | |
80 | SCHED_EVENT_WAKEUP, | |
55ffb7a6 | 81 | SCHED_EVENT_MIGRATION, |
b1ffe8f3 IM |
82 | }; |
83 | ||
39aeb52f | 84 | struct sched_atom { |
b1ffe8f3 | 85 | enum sched_event_type type; |
eed05fe7 | 86 | int specific_wait; |
b1ffe8f3 IM |
87 | u64 timestamp; |
88 | u64 duration; | |
89 | unsigned long nr; | |
b1ffe8f3 IM |
90 | sem_t *wait_sem; |
91 | struct task_desc *wakee; | |
92 | }; | |
93 | ||
e936e8e4 | 94 | #define TASK_STATE_TO_CHAR_STR "RSDTtZXxKWP" |
b1ffe8f3 | 95 | |
941bdea7 NK |
96 | /* task state bitmask, copied from include/linux/sched.h */ |
97 | #define TASK_RUNNING 0 | |
98 | #define TASK_INTERRUPTIBLE 1 | |
99 | #define TASK_UNINTERRUPTIBLE 2 | |
100 | #define __TASK_STOPPED 4 | |
101 | #define __TASK_TRACED 8 | |
102 | /* in tsk->exit_state */ | |
103 | #define EXIT_DEAD 16 | |
104 | #define EXIT_ZOMBIE 32 | |
105 | #define EXIT_TRACE (EXIT_ZOMBIE | EXIT_DEAD) | |
106 | /* in tsk->state again */ | |
107 | #define TASK_DEAD 64 | |
108 | #define TASK_WAKEKILL 128 | |
109 | #define TASK_WAKING 256 | |
110 | #define TASK_PARKED 512 | |
111 | ||
b1ffe8f3 IM |
112 | enum thread_state { |
113 | THREAD_SLEEPING = 0, | |
114 | THREAD_WAIT_CPU, | |
115 | THREAD_SCHED_IN, | |
116 | THREAD_IGNORE | |
117 | }; | |
118 | ||
119 | struct work_atom { | |
120 | struct list_head list; | |
121 | enum thread_state state; | |
aa1ab9d2 | 122 | u64 sched_out_time; |
b1ffe8f3 IM |
123 | u64 wake_up_time; |
124 | u64 sched_in_time; | |
125 | u64 runtime; | |
126 | }; | |
127 | ||
39aeb52f | 128 | struct work_atoms { |
129 | struct list_head work_list; | |
b1ffe8f3 IM |
130 | struct thread *thread; |
131 | struct rb_node node; | |
132 | u64 max_lat; | |
3786310a | 133 | u64 max_lat_at; |
b1ffe8f3 IM |
134 | u64 total_lat; |
135 | u64 nb_atoms; | |
136 | u64 total_runtime; | |
2f80dd44 | 137 | int num_merged; |
b1ffe8f3 IM |
138 | }; |
139 | ||
39aeb52f | 140 | typedef int (*sort_fn_t)(struct work_atoms *, struct work_atoms *); |
b1ffe8f3 | 141 | |
9ec3f4e4 | 142 | struct perf_sched; |
0e9b07e5 | 143 | |
9ec3f4e4 | 144 | struct trace_sched_handler { |
32dcd021 | 145 | int (*switch_event)(struct perf_sched *sched, struct evsel *evsel, |
9ec3f4e4 | 146 | struct perf_sample *sample, struct machine *machine); |
0e9b07e5 | 147 | |
32dcd021 | 148 | int (*runtime_event)(struct perf_sched *sched, struct evsel *evsel, |
9ec3f4e4 | 149 | struct perf_sample *sample, struct machine *machine); |
0e9b07e5 | 150 | |
32dcd021 | 151 | int (*wakeup_event)(struct perf_sched *sched, struct evsel *evsel, |
9ec3f4e4 | 152 | struct perf_sample *sample, struct machine *machine); |
0e9b07e5 | 153 | |
cb627505 DA |
154 | /* PERF_RECORD_FORK event, not sched_process_fork tracepoint */ |
155 | int (*fork_event)(struct perf_sched *sched, union perf_event *event, | |
156 | struct machine *machine); | |
0e9b07e5 ACM |
157 | |
158 | int (*migrate_task_event)(struct perf_sched *sched, | |
32dcd021 | 159 | struct evsel *evsel, |
9ec3f4e4 ACM |
160 | struct perf_sample *sample, |
161 | struct machine *machine); | |
0e9b07e5 ACM |
162 | }; |
163 | ||
a151a37a | 164 | #define COLOR_PIDS PERF_COLOR_BLUE |
cf294f24 | 165 | #define COLOR_CPUS PERF_COLOR_BG_RED |
a151a37a | 166 | |
99623c62 JO |
167 | struct perf_sched_map { |
168 | DECLARE_BITMAP(comp_cpus_mask, MAX_CPUS); | |
169 | int *comp_cpus; | |
170 | bool comp; | |
9749b90e | 171 | struct perf_thread_map *color_pids; |
a151a37a | 172 | const char *color_pids_str; |
f854839b | 173 | struct perf_cpu_map *color_cpus; |
cf294f24 | 174 | const char *color_cpus_str; |
f854839b | 175 | struct perf_cpu_map *cpus; |
73643bb6 | 176 | const char *cpus_str; |
99623c62 JO |
177 | }; |
178 | ||
0e9b07e5 ACM |
179 | struct perf_sched { |
180 | struct perf_tool tool; | |
0e9b07e5 ACM |
181 | const char *sort_order; |
182 | unsigned long nr_tasks; | |
cb06ac25 | 183 | struct task_desc **pid_to_task; |
0e9b07e5 ACM |
184 | struct task_desc **tasks; |
185 | const struct trace_sched_handler *tp_handler; | |
186 | pthread_mutex_t start_work_mutex; | |
187 | pthread_mutex_t work_done_wait_mutex; | |
188 | int profile_cpu; | |
189 | /* | |
190 | * Track the current task - that way we can know whether there's any | |
191 | * weird events, such as a task being switched away that is not current. | |
192 | */ | |
193 | int max_cpu; | |
194 | u32 curr_pid[MAX_CPUS]; | |
195 | struct thread *curr_thread[MAX_CPUS]; | |
196 | char next_shortname1; | |
197 | char next_shortname2; | |
198 | unsigned int replay_repeat; | |
199 | unsigned long nr_run_events; | |
200 | unsigned long nr_sleep_events; | |
201 | unsigned long nr_wakeup_events; | |
202 | unsigned long nr_sleep_corrections; | |
203 | unsigned long nr_run_events_optimized; | |
204 | unsigned long targetless_wakeups; | |
205 | unsigned long multitarget_wakeups; | |
206 | unsigned long nr_runs; | |
207 | unsigned long nr_timestamps; | |
208 | unsigned long nr_unordered_timestamps; | |
0e9b07e5 ACM |
209 | unsigned long nr_context_switch_bugs; |
210 | unsigned long nr_events; | |
211 | unsigned long nr_lost_chunks; | |
212 | unsigned long nr_lost_events; | |
213 | u64 run_measurement_overhead; | |
214 | u64 sleep_measurement_overhead; | |
215 | u64 start_time; | |
216 | u64 cpu_usage; | |
217 | u64 runavg_cpu_usage; | |
218 | u64 parent_cpu_usage; | |
219 | u64 runavg_parent_cpu_usage; | |
220 | u64 sum_runtime; | |
221 | u64 sum_fluct; | |
222 | u64 run_avg; | |
223 | u64 all_runtime; | |
224 | u64 all_count; | |
225 | u64 cpu_last_switched[MAX_CPUS]; | |
cb4c13a5 | 226 | struct rb_root_cached atom_root, sorted_atom_root, merged_atom_root; |
0e9b07e5 | 227 | struct list_head sort_list, cmp_pid; |
939cda52 | 228 | bool force; |
2f80dd44 | 229 | bool skip_merge; |
99623c62 | 230 | struct perf_sched_map map; |
52df138c DA |
231 | |
232 | /* options for timehist command */ | |
233 | bool summary; | |
234 | bool summary_only; | |
699b5b92 | 235 | bool idle_hist; |
6c973c90 DA |
236 | bool show_callchain; |
237 | unsigned int max_stack; | |
a407b067 | 238 | bool show_cpu_visual; |
fc1469f1 | 239 | bool show_wakeups; |
292c4a8f | 240 | bool show_next; |
350f54fa | 241 | bool show_migrations; |
414e050c | 242 | bool show_state; |
52df138c | 243 | u64 skipped_samples; |
853b7407 DA |
244 | const char *time_str; |
245 | struct perf_time_interval ptime; | |
9396c9cb | 246 | struct perf_time_interval hist_time; |
0e9b07e5 | 247 | }; |
b1ffe8f3 | 248 | |
49394a2a DA |
249 | /* per thread run time data */ |
250 | struct thread_runtime { | |
251 | u64 last_time; /* time of previous sched in/out event */ | |
252 | u64 dt_run; /* run time */ | |
941bdea7 NK |
253 | u64 dt_sleep; /* time between CPU access by sleep (off cpu) */ |
254 | u64 dt_iowait; /* time between CPU access by iowait (off cpu) */ | |
255 | u64 dt_preempt; /* time between CPU access by preempt (off cpu) */ | |
49394a2a DA |
256 | u64 dt_delay; /* time between wakeup and sched-in */ |
257 | u64 ready_to_run; /* time of wakeup */ | |
258 | ||
259 | struct stats run_stats; | |
260 | u64 total_run_time; | |
587782c5 NK |
261 | u64 total_sleep_time; |
262 | u64 total_iowait_time; | |
263 | u64 total_preempt_time; | |
264 | u64 total_delay_time; | |
350f54fa | 265 | |
941bdea7 | 266 | int last_state; |
8640da9f CD |
267 | |
268 | char shortname[3]; | |
99a3c3a9 CD |
269 | bool comm_changed; |
270 | ||
350f54fa | 271 | u64 migrations; |
49394a2a DA |
272 | }; |
273 | ||
274 | /* per event run time data */ | |
275 | struct evsel_runtime { | |
276 | u64 *last_time; /* time this event was last seen per cpu */ | |
277 | u32 ncpu; /* highest cpu slot allocated */ | |
278 | }; | |
279 | ||
3bc2fa9c NK |
280 | /* per cpu idle time data */ |
281 | struct idle_thread_runtime { | |
282 | struct thread_runtime tr; | |
283 | struct thread *last_thread; | |
cb4c13a5 | 284 | struct rb_root_cached sorted_root; |
3bc2fa9c NK |
285 | struct callchain_root callchain; |
286 | struct callchain_cursor cursor; | |
287 | }; | |
288 | ||
49394a2a DA |
289 | /* track idle times per cpu */ |
290 | static struct thread **idle_threads; | |
291 | static int idle_max_cpu; | |
292 | static char idle_comm[] = "<idle>"; | |
293 | ||
b1ffe8f3 | 294 | static u64 get_nsecs(void) |
ec156764 IM |
295 | { |
296 | struct timespec ts; | |
297 | ||
298 | clock_gettime(CLOCK_MONOTONIC, &ts); | |
299 | ||
4fc76e49 | 300 | return ts.tv_sec * NSEC_PER_SEC + ts.tv_nsec; |
ec156764 IM |
301 | } |
302 | ||
0e9b07e5 | 303 | static void burn_nsecs(struct perf_sched *sched, u64 nsecs) |
ec156764 | 304 | { |
b1ffe8f3 | 305 | u64 T0 = get_nsecs(), T1; |
ec156764 IM |
306 | |
307 | do { | |
308 | T1 = get_nsecs(); | |
0e9b07e5 | 309 | } while (T1 + sched->run_measurement_overhead < T0 + nsecs); |
ec156764 IM |
310 | } |
311 | ||
b1ffe8f3 | 312 | static void sleep_nsecs(u64 nsecs) |
ec156764 IM |
313 | { |
314 | struct timespec ts; | |
315 | ||
316 | ts.tv_nsec = nsecs % 999999999; | |
317 | ts.tv_sec = nsecs / 999999999; | |
318 | ||
319 | nanosleep(&ts, NULL); | |
320 | } | |
321 | ||
0e9b07e5 | 322 | static void calibrate_run_measurement_overhead(struct perf_sched *sched) |
ec156764 | 323 | { |
4fc76e49 | 324 | u64 T0, T1, delta, min_delta = NSEC_PER_SEC; |
ec156764 IM |
325 | int i; |
326 | ||
327 | for (i = 0; i < 10; i++) { | |
328 | T0 = get_nsecs(); | |
0e9b07e5 | 329 | burn_nsecs(sched, 0); |
ec156764 IM |
330 | T1 = get_nsecs(); |
331 | delta = T1-T0; | |
332 | min_delta = min(min_delta, delta); | |
333 | } | |
0e9b07e5 | 334 | sched->run_measurement_overhead = min_delta; |
ec156764 | 335 | |
9486aa38 | 336 | printf("run measurement overhead: %" PRIu64 " nsecs\n", min_delta); |
ec156764 IM |
337 | } |
338 | ||
0e9b07e5 | 339 | static void calibrate_sleep_measurement_overhead(struct perf_sched *sched) |
ec156764 | 340 | { |
4fc76e49 | 341 | u64 T0, T1, delta, min_delta = NSEC_PER_SEC; |
ec156764 IM |
342 | int i; |
343 | ||
344 | for (i = 0; i < 10; i++) { | |
345 | T0 = get_nsecs(); | |
346 | sleep_nsecs(10000); | |
347 | T1 = get_nsecs(); | |
348 | delta = T1-T0; | |
349 | min_delta = min(min_delta, delta); | |
350 | } | |
351 | min_delta -= 10000; | |
0e9b07e5 | 352 | sched->sleep_measurement_overhead = min_delta; |
ec156764 | 353 | |
9486aa38 | 354 | printf("sleep measurement overhead: %" PRIu64 " nsecs\n", min_delta); |
ec156764 IM |
355 | } |
356 | ||
39aeb52f | 357 | static struct sched_atom * |
b1ffe8f3 | 358 | get_new_event(struct task_desc *task, u64 timestamp) |
ec156764 | 359 | { |
36479484 | 360 | struct sched_atom *event = zalloc(sizeof(*event)); |
ec156764 IM |
361 | unsigned long idx = task->nr_events; |
362 | size_t size; | |
363 | ||
364 | event->timestamp = timestamp; | |
365 | event->nr = idx; | |
366 | ||
367 | task->nr_events++; | |
39aeb52f | 368 | size = sizeof(struct sched_atom *) * task->nr_events; |
369 | task->atoms = realloc(task->atoms, size); | |
370 | BUG_ON(!task->atoms); | |
ec156764 | 371 | |
39aeb52f | 372 | task->atoms[idx] = event; |
ec156764 IM |
373 | |
374 | return event; | |
375 | } | |
376 | ||
39aeb52f | 377 | static struct sched_atom *last_event(struct task_desc *task) |
ec156764 IM |
378 | { |
379 | if (!task->nr_events) | |
380 | return NULL; | |
381 | ||
39aeb52f | 382 | return task->atoms[task->nr_events - 1]; |
ec156764 IM |
383 | } |
384 | ||
0e9b07e5 ACM |
385 | static void add_sched_event_run(struct perf_sched *sched, struct task_desc *task, |
386 | u64 timestamp, u64 duration) | |
ec156764 | 387 | { |
39aeb52f | 388 | struct sched_atom *event, *curr_event = last_event(task); |
ec156764 IM |
389 | |
390 | /* | |
fbf94829 IM |
391 | * optimize an existing RUN event by merging this one |
392 | * to it: | |
393 | */ | |
ec156764 | 394 | if (curr_event && curr_event->type == SCHED_EVENT_RUN) { |
0e9b07e5 | 395 | sched->nr_run_events_optimized++; |
ec156764 IM |
396 | curr_event->duration += duration; |
397 | return; | |
398 | } | |
399 | ||
400 | event = get_new_event(task, timestamp); | |
401 | ||
402 | event->type = SCHED_EVENT_RUN; | |
403 | event->duration = duration; | |
404 | ||
0e9b07e5 | 405 | sched->nr_run_events++; |
ec156764 IM |
406 | } |
407 | ||
0e9b07e5 ACM |
408 | static void add_sched_event_wakeup(struct perf_sched *sched, struct task_desc *task, |
409 | u64 timestamp, struct task_desc *wakee) | |
ec156764 | 410 | { |
39aeb52f | 411 | struct sched_atom *event, *wakee_event; |
ec156764 IM |
412 | |
413 | event = get_new_event(task, timestamp); | |
414 | event->type = SCHED_EVENT_WAKEUP; | |
415 | event->wakee = wakee; | |
416 | ||
417 | wakee_event = last_event(wakee); | |
418 | if (!wakee_event || wakee_event->type != SCHED_EVENT_SLEEP) { | |
0e9b07e5 | 419 | sched->targetless_wakeups++; |
ec156764 IM |
420 | return; |
421 | } | |
422 | if (wakee_event->wait_sem) { | |
0e9b07e5 | 423 | sched->multitarget_wakeups++; |
ec156764 IM |
424 | return; |
425 | } | |
426 | ||
36479484 | 427 | wakee_event->wait_sem = zalloc(sizeof(*wakee_event->wait_sem)); |
ec156764 IM |
428 | sem_init(wakee_event->wait_sem, 0, 0); |
429 | wakee_event->specific_wait = 1; | |
430 | event->wait_sem = wakee_event->wait_sem; | |
431 | ||
0e9b07e5 | 432 | sched->nr_wakeup_events++; |
ec156764 IM |
433 | } |
434 | ||
0e9b07e5 ACM |
435 | static void add_sched_event_sleep(struct perf_sched *sched, struct task_desc *task, |
436 | u64 timestamp, u64 task_state __maybe_unused) | |
ec156764 | 437 | { |
39aeb52f | 438 | struct sched_atom *event = get_new_event(task, timestamp); |
ec156764 IM |
439 | |
440 | event->type = SCHED_EVENT_SLEEP; | |
441 | ||
0e9b07e5 | 442 | sched->nr_sleep_events++; |
ec156764 IM |
443 | } |
444 | ||
0e9b07e5 ACM |
445 | static struct task_desc *register_pid(struct perf_sched *sched, |
446 | unsigned long pid, const char *comm) | |
ec156764 IM |
447 | { |
448 | struct task_desc *task; | |
cb06ac25 | 449 | static int pid_max; |
ec156764 | 450 | |
cb06ac25 YS |
451 | if (sched->pid_to_task == NULL) { |
452 | if (sysctl__read_int("kernel/pid_max", &pid_max) < 0) | |
453 | pid_max = MAX_PID; | |
454 | BUG_ON((sched->pid_to_task = calloc(pid_max, sizeof(struct task_desc *))) == NULL); | |
455 | } | |
3a423a5c YS |
456 | if (pid >= (unsigned long)pid_max) { |
457 | BUG_ON((sched->pid_to_task = realloc(sched->pid_to_task, (pid + 1) * | |
458 | sizeof(struct task_desc *))) == NULL); | |
459 | while (pid >= (unsigned long)pid_max) | |
460 | sched->pid_to_task[pid_max++] = NULL; | |
461 | } | |
ec156764 | 462 | |
0e9b07e5 | 463 | task = sched->pid_to_task[pid]; |
ec156764 IM |
464 | |
465 | if (task) | |
466 | return task; | |
467 | ||
36479484 | 468 | task = zalloc(sizeof(*task)); |
ec156764 | 469 | task->pid = pid; |
0e9b07e5 | 470 | task->nr = sched->nr_tasks; |
ec156764 IM |
471 | strcpy(task->comm, comm); |
472 | /* | |
473 | * every task starts in sleeping state - this gets ignored | |
474 | * if there's no wakeup pointing to this sleep state: | |
475 | */ | |
0e9b07e5 | 476 | add_sched_event_sleep(sched, task, 0, 0); |
ec156764 | 477 | |
0e9b07e5 ACM |
478 | sched->pid_to_task[pid] = task; |
479 | sched->nr_tasks++; | |
0755bc4d | 480 | sched->tasks = realloc(sched->tasks, sched->nr_tasks * sizeof(struct task_desc *)); |
0e9b07e5 ACM |
481 | BUG_ON(!sched->tasks); |
482 | sched->tasks[task->nr] = task; | |
ec156764 | 483 | |
bb963e16 | 484 | if (verbose > 0) |
0e9b07e5 | 485 | printf("registered task #%ld, PID %ld (%s)\n", sched->nr_tasks, pid, comm); |
ec156764 IM |
486 | |
487 | return task; | |
488 | } | |
489 | ||
490 | ||
0e9b07e5 | 491 | static void print_task_traces(struct perf_sched *sched) |
ec156764 IM |
492 | { |
493 | struct task_desc *task; | |
494 | unsigned long i; | |
495 | ||
0e9b07e5 ACM |
496 | for (i = 0; i < sched->nr_tasks; i++) { |
497 | task = sched->tasks[i]; | |
ad236fd2 | 498 | printf("task %6ld (%20s:%10ld), nr_events: %ld\n", |
ec156764 IM |
499 | task->nr, task->comm, task->pid, task->nr_events); |
500 | } | |
501 | } | |
502 | ||
0e9b07e5 | 503 | static void add_cross_task_wakeups(struct perf_sched *sched) |
ec156764 IM |
504 | { |
505 | struct task_desc *task1, *task2; | |
506 | unsigned long i, j; | |
507 | ||
0e9b07e5 ACM |
508 | for (i = 0; i < sched->nr_tasks; i++) { |
509 | task1 = sched->tasks[i]; | |
ec156764 | 510 | j = i + 1; |
0e9b07e5 | 511 | if (j == sched->nr_tasks) |
ec156764 | 512 | j = 0; |
0e9b07e5 ACM |
513 | task2 = sched->tasks[j]; |
514 | add_sched_event_wakeup(sched, task1, 0, task2); | |
ec156764 IM |
515 | } |
516 | } | |
517 | ||
0e9b07e5 ACM |
518 | static void perf_sched__process_event(struct perf_sched *sched, |
519 | struct sched_atom *atom) | |
ec156764 IM |
520 | { |
521 | int ret = 0; | |
ec156764 | 522 | |
39aeb52f | 523 | switch (atom->type) { |
ec156764 | 524 | case SCHED_EVENT_RUN: |
0e9b07e5 | 525 | burn_nsecs(sched, atom->duration); |
ec156764 IM |
526 | break; |
527 | case SCHED_EVENT_SLEEP: | |
39aeb52f | 528 | if (atom->wait_sem) |
529 | ret = sem_wait(atom->wait_sem); | |
ec156764 IM |
530 | BUG_ON(ret); |
531 | break; | |
532 | case SCHED_EVENT_WAKEUP: | |
39aeb52f | 533 | if (atom->wait_sem) |
534 | ret = sem_post(atom->wait_sem); | |
ec156764 IM |
535 | BUG_ON(ret); |
536 | break; | |
55ffb7a6 MG |
537 | case SCHED_EVENT_MIGRATION: |
538 | break; | |
ec156764 IM |
539 | default: |
540 | BUG_ON(1); | |
541 | } | |
542 | } | |
543 | ||
b1ffe8f3 | 544 | static u64 get_cpu_usage_nsec_parent(void) |
ec156764 IM |
545 | { |
546 | struct rusage ru; | |
b1ffe8f3 | 547 | u64 sum; |
ec156764 IM |
548 | int err; |
549 | ||
550 | err = getrusage(RUSAGE_SELF, &ru); | |
551 | BUG_ON(err); | |
552 | ||
4fc76e49 ACM |
553 | sum = ru.ru_utime.tv_sec * NSEC_PER_SEC + ru.ru_utime.tv_usec * NSEC_PER_USEC; |
554 | sum += ru.ru_stime.tv_sec * NSEC_PER_SEC + ru.ru_stime.tv_usec * NSEC_PER_USEC; | |
ec156764 IM |
555 | |
556 | return sum; | |
557 | } | |
558 | ||
939cda52 | 559 | static int self_open_counters(struct perf_sched *sched, unsigned long cur_task) |
ec156764 | 560 | { |
c0c9e721 | 561 | struct perf_event_attr attr; |
939cda52 | 562 | char sbuf[STRERR_BUFSIZE], info[STRERR_BUFSIZE]; |
c0c9e721 | 563 | int fd; |
939cda52 YS |
564 | struct rlimit limit; |
565 | bool need_privilege = false; | |
ec156764 | 566 | |
c0c9e721 | 567 | memset(&attr, 0, sizeof(attr)); |
ec156764 | 568 | |
c0c9e721 XG |
569 | attr.type = PERF_TYPE_SOFTWARE; |
570 | attr.config = PERF_COUNT_SW_TASK_CLOCK; | |
ec156764 | 571 | |
939cda52 | 572 | force_again: |
57480d2c YD |
573 | fd = sys_perf_event_open(&attr, 0, -1, -1, |
574 | perf_event_open_cloexec_flag()); | |
c0c9e721 | 575 | |
1aff59be | 576 | if (fd < 0) { |
939cda52 YS |
577 | if (errno == EMFILE) { |
578 | if (sched->force) { | |
579 | BUG_ON(getrlimit(RLIMIT_NOFILE, &limit) == -1); | |
580 | limit.rlim_cur += sched->nr_tasks - cur_task; | |
581 | if (limit.rlim_cur > limit.rlim_max) { | |
582 | limit.rlim_max = limit.rlim_cur; | |
583 | need_privilege = true; | |
584 | } | |
585 | if (setrlimit(RLIMIT_NOFILE, &limit) == -1) { | |
586 | if (need_privilege && errno == EPERM) | |
587 | strcpy(info, "Need privilege\n"); | |
588 | } else | |
589 | goto force_again; | |
590 | } else | |
591 | strcpy(info, "Have a try with -f option\n"); | |
592 | } | |
60b7d14a | 593 | pr_err("Error: sys_perf_event_open() syscall returned " |
939cda52 | 594 | "with %d (%s)\n%s", fd, |
c8b5f2c9 | 595 | str_error_r(errno, sbuf, sizeof(sbuf)), info); |
1aff59be YS |
596 | exit(EXIT_FAILURE); |
597 | } | |
c0c9e721 XG |
598 | return fd; |
599 | } | |
600 | ||
601 | static u64 get_cpu_usage_nsec_self(int fd) | |
602 | { | |
603 | u64 runtime; | |
604 | int ret; | |
605 | ||
606 | ret = read(fd, &runtime, sizeof(runtime)); | |
607 | BUG_ON(ret != sizeof(runtime)); | |
608 | ||
609 | return runtime; | |
ec156764 IM |
610 | } |
611 | ||
0e9b07e5 ACM |
612 | struct sched_thread_parms { |
613 | struct task_desc *task; | |
614 | struct perf_sched *sched; | |
08097abc | 615 | int fd; |
0e9b07e5 ACM |
616 | }; |
617 | ||
ec156764 IM |
618 | static void *thread_func(void *ctx) |
619 | { | |
0e9b07e5 ACM |
620 | struct sched_thread_parms *parms = ctx; |
621 | struct task_desc *this_task = parms->task; | |
622 | struct perf_sched *sched = parms->sched; | |
b1ffe8f3 | 623 | u64 cpu_usage_0, cpu_usage_1; |
ec156764 IM |
624 | unsigned long i, ret; |
625 | char comm2[22]; | |
08097abc | 626 | int fd = parms->fd; |
ec156764 | 627 | |
74cf249d | 628 | zfree(&parms); |
0e9b07e5 | 629 | |
ec156764 IM |
630 | sprintf(comm2, ":%s", this_task->comm); |
631 | prctl(PR_SET_NAME, comm2); | |
a116e05d ACM |
632 | if (fd < 0) |
633 | return NULL; | |
ec156764 IM |
634 | again: |
635 | ret = sem_post(&this_task->ready_for_work); | |
636 | BUG_ON(ret); | |
0e9b07e5 | 637 | ret = pthread_mutex_lock(&sched->start_work_mutex); |
ec156764 | 638 | BUG_ON(ret); |
0e9b07e5 | 639 | ret = pthread_mutex_unlock(&sched->start_work_mutex); |
ec156764 | 640 | BUG_ON(ret); |
ec156764 | 641 | |
c0c9e721 | 642 | cpu_usage_0 = get_cpu_usage_nsec_self(fd); |
ec156764 IM |
643 | |
644 | for (i = 0; i < this_task->nr_events; i++) { | |
645 | this_task->curr_event = i; | |
0e9b07e5 | 646 | perf_sched__process_event(sched, this_task->atoms[i]); |
ec156764 IM |
647 | } |
648 | ||
c0c9e721 | 649 | cpu_usage_1 = get_cpu_usage_nsec_self(fd); |
ec156764 | 650 | this_task->cpu_usage = cpu_usage_1 - cpu_usage_0; |
ec156764 IM |
651 | ret = sem_post(&this_task->work_done_sem); |
652 | BUG_ON(ret); | |
ec156764 | 653 | |
0e9b07e5 | 654 | ret = pthread_mutex_lock(&sched->work_done_wait_mutex); |
ec156764 | 655 | BUG_ON(ret); |
0e9b07e5 | 656 | ret = pthread_mutex_unlock(&sched->work_done_wait_mutex); |
ec156764 | 657 | BUG_ON(ret); |
ec156764 IM |
658 | |
659 | goto again; | |
660 | } | |
661 | ||
0e9b07e5 | 662 | static void create_tasks(struct perf_sched *sched) |
ec156764 IM |
663 | { |
664 | struct task_desc *task; | |
665 | pthread_attr_t attr; | |
666 | unsigned long i; | |
667 | int err; | |
668 | ||
669 | err = pthread_attr_init(&attr); | |
670 | BUG_ON(err); | |
12f7e036 JP |
671 | err = pthread_attr_setstacksize(&attr, |
672 | (size_t) max(16 * 1024, PTHREAD_STACK_MIN)); | |
ec156764 | 673 | BUG_ON(err); |
0e9b07e5 | 674 | err = pthread_mutex_lock(&sched->start_work_mutex); |
ec156764 | 675 | BUG_ON(err); |
0e9b07e5 | 676 | err = pthread_mutex_lock(&sched->work_done_wait_mutex); |
ec156764 | 677 | BUG_ON(err); |
0e9b07e5 ACM |
678 | for (i = 0; i < sched->nr_tasks; i++) { |
679 | struct sched_thread_parms *parms = malloc(sizeof(*parms)); | |
680 | BUG_ON(parms == NULL); | |
681 | parms->task = task = sched->tasks[i]; | |
682 | parms->sched = sched; | |
939cda52 | 683 | parms->fd = self_open_counters(sched, i); |
ec156764 IM |
684 | sem_init(&task->sleep_sem, 0, 0); |
685 | sem_init(&task->ready_for_work, 0, 0); | |
686 | sem_init(&task->work_done_sem, 0, 0); | |
687 | task->curr_event = 0; | |
0e9b07e5 | 688 | err = pthread_create(&task->thread, &attr, thread_func, parms); |
ec156764 IM |
689 | BUG_ON(err); |
690 | } | |
691 | } | |
692 | ||
0e9b07e5 | 693 | static void wait_for_tasks(struct perf_sched *sched) |
ec156764 | 694 | { |
b1ffe8f3 | 695 | u64 cpu_usage_0, cpu_usage_1; |
ec156764 IM |
696 | struct task_desc *task; |
697 | unsigned long i, ret; | |
698 | ||
0e9b07e5 ACM |
699 | sched->start_time = get_nsecs(); |
700 | sched->cpu_usage = 0; | |
701 | pthread_mutex_unlock(&sched->work_done_wait_mutex); | |
ec156764 | 702 | |
0e9b07e5 ACM |
703 | for (i = 0; i < sched->nr_tasks; i++) { |
704 | task = sched->tasks[i]; | |
ec156764 IM |
705 | ret = sem_wait(&task->ready_for_work); |
706 | BUG_ON(ret); | |
707 | sem_init(&task->ready_for_work, 0, 0); | |
708 | } | |
0e9b07e5 | 709 | ret = pthread_mutex_lock(&sched->work_done_wait_mutex); |
ec156764 IM |
710 | BUG_ON(ret); |
711 | ||
712 | cpu_usage_0 = get_cpu_usage_nsec_parent(); | |
713 | ||
0e9b07e5 | 714 | pthread_mutex_unlock(&sched->start_work_mutex); |
ec156764 | 715 | |
0e9b07e5 ACM |
716 | for (i = 0; i < sched->nr_tasks; i++) { |
717 | task = sched->tasks[i]; | |
ec156764 IM |
718 | ret = sem_wait(&task->work_done_sem); |
719 | BUG_ON(ret); | |
720 | sem_init(&task->work_done_sem, 0, 0); | |
0e9b07e5 | 721 | sched->cpu_usage += task->cpu_usage; |
ec156764 IM |
722 | task->cpu_usage = 0; |
723 | } | |
724 | ||
725 | cpu_usage_1 = get_cpu_usage_nsec_parent(); | |
0e9b07e5 ACM |
726 | if (!sched->runavg_cpu_usage) |
727 | sched->runavg_cpu_usage = sched->cpu_usage; | |
ff5f3bbd | 728 | sched->runavg_cpu_usage = (sched->runavg_cpu_usage * (sched->replay_repeat - 1) + sched->cpu_usage) / sched->replay_repeat; |
ec156764 | 729 | |
0e9b07e5 ACM |
730 | sched->parent_cpu_usage = cpu_usage_1 - cpu_usage_0; |
731 | if (!sched->runavg_parent_cpu_usage) | |
732 | sched->runavg_parent_cpu_usage = sched->parent_cpu_usage; | |
ff5f3bbd YS |
733 | sched->runavg_parent_cpu_usage = (sched->runavg_parent_cpu_usage * (sched->replay_repeat - 1) + |
734 | sched->parent_cpu_usage)/sched->replay_repeat; | |
ec156764 | 735 | |
0e9b07e5 | 736 | ret = pthread_mutex_lock(&sched->start_work_mutex); |
ec156764 IM |
737 | BUG_ON(ret); |
738 | ||
0e9b07e5 ACM |
739 | for (i = 0; i < sched->nr_tasks; i++) { |
740 | task = sched->tasks[i]; | |
ec156764 IM |
741 | sem_init(&task->sleep_sem, 0, 0); |
742 | task->curr_event = 0; | |
743 | } | |
744 | } | |
745 | ||
0e9b07e5 | 746 | static void run_one_test(struct perf_sched *sched) |
ec156764 | 747 | { |
fb7d0b3c | 748 | u64 T0, T1, delta, avg_delta, fluct; |
ec156764 IM |
749 | |
750 | T0 = get_nsecs(); | |
0e9b07e5 | 751 | wait_for_tasks(sched); |
ec156764 IM |
752 | T1 = get_nsecs(); |
753 | ||
754 | delta = T1 - T0; | |
0e9b07e5 ACM |
755 | sched->sum_runtime += delta; |
756 | sched->nr_runs++; | |
ec156764 | 757 | |
0e9b07e5 | 758 | avg_delta = sched->sum_runtime / sched->nr_runs; |
ec156764 IM |
759 | if (delta < avg_delta) |
760 | fluct = avg_delta - delta; | |
761 | else | |
762 | fluct = delta - avg_delta; | |
0e9b07e5 ACM |
763 | sched->sum_fluct += fluct; |
764 | if (!sched->run_avg) | |
765 | sched->run_avg = delta; | |
ff5f3bbd | 766 | sched->run_avg = (sched->run_avg * (sched->replay_repeat - 1) + delta) / sched->replay_repeat; |
ec156764 | 767 | |
4fc76e49 | 768 | printf("#%-3ld: %0.3f, ", sched->nr_runs, (double)delta / NSEC_PER_MSEC); |
ec156764 | 769 | |
4fc76e49 | 770 | printf("ravg: %0.2f, ", (double)sched->run_avg / NSEC_PER_MSEC); |
ec156764 | 771 | |
ad236fd2 | 772 | printf("cpu: %0.2f / %0.2f", |
4fc76e49 | 773 | (double)sched->cpu_usage / NSEC_PER_MSEC, (double)sched->runavg_cpu_usage / NSEC_PER_MSEC); |
ec156764 IM |
774 | |
775 | #if 0 | |
776 | /* | |
fbf94829 | 777 | * rusage statistics done by the parent, these are less |
0e9b07e5 | 778 | * accurate than the sched->sum_exec_runtime based statistics: |
fbf94829 | 779 | */ |
ad236fd2 | 780 | printf(" [%0.2f / %0.2f]", |
4fc76e49 ACM |
781 | (double)sched->parent_cpu_usage / NSEC_PER_MSEC, |
782 | (double)sched->runavg_parent_cpu_usage / NSEC_PER_MSEC); | |
ec156764 IM |
783 | #endif |
784 | ||
ad236fd2 | 785 | printf("\n"); |
ec156764 | 786 | |
0e9b07e5 ACM |
787 | if (sched->nr_sleep_corrections) |
788 | printf(" (%ld sleep corrections)\n", sched->nr_sleep_corrections); | |
789 | sched->nr_sleep_corrections = 0; | |
ec156764 IM |
790 | } |
791 | ||
0e9b07e5 | 792 | static void test_calibrations(struct perf_sched *sched) |
ec156764 | 793 | { |
b1ffe8f3 | 794 | u64 T0, T1; |
ec156764 IM |
795 | |
796 | T0 = get_nsecs(); | |
4fc76e49 | 797 | burn_nsecs(sched, NSEC_PER_MSEC); |
ec156764 IM |
798 | T1 = get_nsecs(); |
799 | ||
9486aa38 | 800 | printf("the run test took %" PRIu64 " nsecs\n", T1 - T0); |
ec156764 IM |
801 | |
802 | T0 = get_nsecs(); | |
4fc76e49 | 803 | sleep_nsecs(NSEC_PER_MSEC); |
ec156764 IM |
804 | T1 = get_nsecs(); |
805 | ||
9486aa38 | 806 | printf("the sleep test took %" PRIu64 " nsecs\n", T1 - T0); |
ec156764 IM |
807 | } |
808 | ||
a116e05d | 809 | static int |
0e9b07e5 | 810 | replay_wakeup_event(struct perf_sched *sched, |
32dcd021 | 811 | struct evsel *evsel, struct perf_sample *sample, |
9ec3f4e4 | 812 | struct machine *machine __maybe_unused) |
419ab0d6 | 813 | { |
9ec3f4e4 ACM |
814 | const char *comm = perf_evsel__strval(evsel, sample, "comm"); |
815 | const u32 pid = perf_evsel__intval(evsel, sample, "pid"); | |
419ab0d6 | 816 | struct task_desc *waker, *wakee; |
fbf94829 | 817 | |
bb963e16 | 818 | if (verbose > 0) { |
2b7fcbc5 | 819 | printf("sched_wakeup event %p\n", evsel); |
fbf94829 | 820 | |
9ec3f4e4 | 821 | printf(" ... pid %d woke up %s/%d\n", sample->tid, comm, pid); |
ad236fd2 | 822 | } |
fbf94829 | 823 | |
2b7fcbc5 | 824 | waker = register_pid(sched, sample->tid, "<unknown>"); |
9ec3f4e4 | 825 | wakee = register_pid(sched, pid, comm); |
fbf94829 | 826 | |
0e9b07e5 | 827 | add_sched_event_wakeup(sched, waker, sample->time, wakee); |
a116e05d | 828 | return 0; |
ec156764 IM |
829 | } |
830 | ||
9ec3f4e4 | 831 | static int replay_switch_event(struct perf_sched *sched, |
32dcd021 | 832 | struct evsel *evsel, |
9ec3f4e4 ACM |
833 | struct perf_sample *sample, |
834 | struct machine *machine __maybe_unused) | |
ec156764 | 835 | { |
9ec3f4e4 ACM |
836 | const char *prev_comm = perf_evsel__strval(evsel, sample, "prev_comm"), |
837 | *next_comm = perf_evsel__strval(evsel, sample, "next_comm"); | |
838 | const u32 prev_pid = perf_evsel__intval(evsel, sample, "prev_pid"), | |
839 | next_pid = perf_evsel__intval(evsel, sample, "next_pid"); | |
840 | const u64 prev_state = perf_evsel__intval(evsel, sample, "prev_state"); | |
1d037ca1 | 841 | struct task_desc *prev, __maybe_unused *next; |
7f7f8d0b ACM |
842 | u64 timestamp0, timestamp = sample->time; |
843 | int cpu = sample->cpu; | |
fbf94829 IM |
844 | s64 delta; |
845 | ||
bb963e16 | 846 | if (verbose > 0) |
2b7fcbc5 | 847 | printf("sched_switch event %p\n", evsel); |
ad236fd2 | 848 | |
fbf94829 | 849 | if (cpu >= MAX_CPUS || cpu < 0) |
a116e05d | 850 | return 0; |
fbf94829 | 851 | |
0e9b07e5 | 852 | timestamp0 = sched->cpu_last_switched[cpu]; |
fbf94829 IM |
853 | if (timestamp0) |
854 | delta = timestamp - timestamp0; | |
855 | else | |
856 | delta = 0; | |
857 | ||
a116e05d | 858 | if (delta < 0) { |
60b7d14a | 859 | pr_err("hm, delta: %" PRIu64 " < 0 ?\n", delta); |
a116e05d ACM |
860 | return -1; |
861 | } | |
fbf94829 | 862 | |
9ec3f4e4 ACM |
863 | pr_debug(" ... switch from %s/%d to %s/%d [ran %" PRIu64 " nsecs]\n", |
864 | prev_comm, prev_pid, next_comm, next_pid, delta); | |
fbf94829 | 865 | |
9ec3f4e4 ACM |
866 | prev = register_pid(sched, prev_pid, prev_comm); |
867 | next = register_pid(sched, next_pid, next_comm); | |
fbf94829 | 868 | |
0e9b07e5 | 869 | sched->cpu_last_switched[cpu] = timestamp; |
fbf94829 | 870 | |
0e9b07e5 | 871 | add_sched_event_run(sched, prev, timestamp, delta); |
9ec3f4e4 | 872 | add_sched_event_sleep(sched, prev, timestamp, prev_state); |
a116e05d ACM |
873 | |
874 | return 0; | |
fbf94829 IM |
875 | } |
876 | ||
cb627505 DA |
877 | static int replay_fork_event(struct perf_sched *sched, |
878 | union perf_event *event, | |
879 | struct machine *machine) | |
419ab0d6 | 880 | { |
cb627505 DA |
881 | struct thread *child, *parent; |
882 | ||
314add6b AH |
883 | child = machine__findnew_thread(machine, event->fork.pid, |
884 | event->fork.tid); | |
885 | parent = machine__findnew_thread(machine, event->fork.ppid, | |
886 | event->fork.ptid); | |
cb627505 DA |
887 | |
888 | if (child == NULL || parent == NULL) { | |
889 | pr_debug("thread does not exist on fork event: child %p, parent %p\n", | |
890 | child, parent); | |
b91fc39f | 891 | goto out_put; |
cb627505 | 892 | } |
9ec3f4e4 | 893 | |
bb963e16 | 894 | if (verbose > 0) { |
cb627505 | 895 | printf("fork event\n"); |
b9c5143a FW |
896 | printf("... parent: %s/%d\n", thread__comm_str(parent), parent->tid); |
897 | printf("... child: %s/%d\n", thread__comm_str(child), child->tid); | |
419ab0d6 | 898 | } |
9ec3f4e4 | 899 | |
b9c5143a FW |
900 | register_pid(sched, parent->tid, thread__comm_str(parent)); |
901 | register_pid(sched, child->tid, thread__comm_str(child)); | |
b91fc39f ACM |
902 | out_put: |
903 | thread__put(child); | |
904 | thread__put(parent); | |
a116e05d | 905 | return 0; |
419ab0d6 | 906 | } |
fbf94829 | 907 | |
b1ffe8f3 IM |
908 | struct sort_dimension { |
909 | const char *name; | |
b5fae128 | 910 | sort_fn_t cmp; |
b1ffe8f3 IM |
911 | struct list_head list; |
912 | }; | |
913 | ||
8640da9f CD |
914 | /* |
915 | * handle runtime stats saved per thread | |
916 | */ | |
917 | static struct thread_runtime *thread__init_runtime(struct thread *thread) | |
918 | { | |
919 | struct thread_runtime *r; | |
920 | ||
921 | r = zalloc(sizeof(struct thread_runtime)); | |
922 | if (!r) | |
923 | return NULL; | |
924 | ||
925 | init_stats(&r->run_stats); | |
926 | thread__set_priv(thread, r); | |
927 | ||
928 | return r; | |
929 | } | |
930 | ||
931 | static struct thread_runtime *thread__get_runtime(struct thread *thread) | |
932 | { | |
933 | struct thread_runtime *tr; | |
934 | ||
935 | tr = thread__priv(thread); | |
936 | if (tr == NULL) { | |
937 | tr = thread__init_runtime(thread); | |
938 | if (tr == NULL) | |
939 | pr_debug("Failed to malloc memory for runtime data.\n"); | |
940 | } | |
941 | ||
942 | return tr; | |
943 | } | |
944 | ||
daa1d7a5 | 945 | static int |
39aeb52f | 946 | thread_lat_cmp(struct list_head *list, struct work_atoms *l, struct work_atoms *r) |
daa1d7a5 FW |
947 | { |
948 | struct sort_dimension *sort; | |
949 | int ret = 0; | |
950 | ||
b5fae128 IM |
951 | BUG_ON(list_empty(list)); |
952 | ||
daa1d7a5 FW |
953 | list_for_each_entry(sort, list, list) { |
954 | ret = sort->cmp(l, r); | |
955 | if (ret) | |
956 | return ret; | |
957 | } | |
958 | ||
959 | return ret; | |
960 | } | |
961 | ||
39aeb52f | 962 | static struct work_atoms * |
cb4c13a5 | 963 | thread_atoms_search(struct rb_root_cached *root, struct thread *thread, |
b5fae128 IM |
964 | struct list_head *sort_list) |
965 | { | |
cb4c13a5 | 966 | struct rb_node *node = root->rb_root.rb_node; |
39aeb52f | 967 | struct work_atoms key = { .thread = thread }; |
b5fae128 IM |
968 | |
969 | while (node) { | |
39aeb52f | 970 | struct work_atoms *atoms; |
b5fae128 IM |
971 | int cmp; |
972 | ||
39aeb52f | 973 | atoms = container_of(node, struct work_atoms, node); |
b5fae128 IM |
974 | |
975 | cmp = thread_lat_cmp(sort_list, &key, atoms); | |
976 | if (cmp > 0) | |
977 | node = node->rb_left; | |
978 | else if (cmp < 0) | |
979 | node = node->rb_right; | |
980 | else { | |
981 | BUG_ON(thread != atoms->thread); | |
982 | return atoms; | |
983 | } | |
984 | } | |
985 | return NULL; | |
986 | } | |
987 | ||
cdce9d73 | 988 | static void |
cb4c13a5 | 989 | __thread_latency_insert(struct rb_root_cached *root, struct work_atoms *data, |
daa1d7a5 | 990 | struct list_head *sort_list) |
cdce9d73 | 991 | { |
cb4c13a5 DB |
992 | struct rb_node **new = &(root->rb_root.rb_node), *parent = NULL; |
993 | bool leftmost = true; | |
cdce9d73 FW |
994 | |
995 | while (*new) { | |
39aeb52f | 996 | struct work_atoms *this; |
daa1d7a5 | 997 | int cmp; |
cdce9d73 | 998 | |
39aeb52f | 999 | this = container_of(*new, struct work_atoms, node); |
cdce9d73 | 1000 | parent = *new; |
daa1d7a5 FW |
1001 | |
1002 | cmp = thread_lat_cmp(sort_list, data, this); | |
1003 | ||
1004 | if (cmp > 0) | |
cdce9d73 | 1005 | new = &((*new)->rb_left); |
cb4c13a5 | 1006 | else { |
daa1d7a5 | 1007 | new = &((*new)->rb_right); |
cb4c13a5 DB |
1008 | leftmost = false; |
1009 | } | |
cdce9d73 FW |
1010 | } |
1011 | ||
1012 | rb_link_node(&data->node, parent, new); | |
cb4c13a5 | 1013 | rb_insert_color_cached(&data->node, root, leftmost); |
cdce9d73 FW |
1014 | } |
1015 | ||
0e9b07e5 | 1016 | static int thread_atoms_insert(struct perf_sched *sched, struct thread *thread) |
cdce9d73 | 1017 | { |
36479484 | 1018 | struct work_atoms *atoms = zalloc(sizeof(*atoms)); |
a116e05d ACM |
1019 | if (!atoms) { |
1020 | pr_err("No memory at %s\n", __func__); | |
1021 | return -1; | |
1022 | } | |
cdce9d73 | 1023 | |
f3b623b8 | 1024 | atoms->thread = thread__get(thread); |
39aeb52f | 1025 | INIT_LIST_HEAD(&atoms->work_list); |
0e9b07e5 | 1026 | __thread_latency_insert(&sched->atom_root, atoms, &sched->cmp_pid); |
a116e05d | 1027 | return 0; |
cdce9d73 FW |
1028 | } |
1029 | ||
9ec3f4e4 | 1030 | static char sched_out_state(u64 prev_state) |
cdce9d73 FW |
1031 | { |
1032 | const char *str = TASK_STATE_TO_CHAR_STR; | |
1033 | ||
9ec3f4e4 | 1034 | return str[prev_state]; |
cdce9d73 FW |
1035 | } |
1036 | ||
a116e05d | 1037 | static int |
39aeb52f | 1038 | add_sched_out_event(struct work_atoms *atoms, |
1039 | char run_state, | |
1040 | u64 timestamp) | |
cdce9d73 | 1041 | { |
36479484 | 1042 | struct work_atom *atom = zalloc(sizeof(*atom)); |
a116e05d ACM |
1043 | if (!atom) { |
1044 | pr_err("Non memory at %s", __func__); | |
1045 | return -1; | |
1046 | } | |
cdce9d73 | 1047 | |
aa1ab9d2 FW |
1048 | atom->sched_out_time = timestamp; |
1049 | ||
39aeb52f | 1050 | if (run_state == 'R') { |
b1ffe8f3 | 1051 | atom->state = THREAD_WAIT_CPU; |
aa1ab9d2 | 1052 | atom->wake_up_time = atom->sched_out_time; |
c6ced611 FW |
1053 | } |
1054 | ||
39aeb52f | 1055 | list_add_tail(&atom->list, &atoms->work_list); |
a116e05d | 1056 | return 0; |
cdce9d73 FW |
1057 | } |
1058 | ||
1059 | static void | |
1d037ca1 IT |
1060 | add_runtime_event(struct work_atoms *atoms, u64 delta, |
1061 | u64 timestamp __maybe_unused) | |
39aeb52f | 1062 | { |
1063 | struct work_atom *atom; | |
1064 | ||
1065 | BUG_ON(list_empty(&atoms->work_list)); | |
1066 | ||
1067 | atom = list_entry(atoms->work_list.prev, struct work_atom, list); | |
1068 | ||
1069 | atom->runtime += delta; | |
1070 | atoms->total_runtime += delta; | |
1071 | } | |
1072 | ||
1073 | static void | |
1074 | add_sched_in_event(struct work_atoms *atoms, u64 timestamp) | |
cdce9d73 | 1075 | { |
b1ffe8f3 | 1076 | struct work_atom *atom; |
66685678 | 1077 | u64 delta; |
cdce9d73 | 1078 | |
39aeb52f | 1079 | if (list_empty(&atoms->work_list)) |
cdce9d73 FW |
1080 | return; |
1081 | ||
39aeb52f | 1082 | atom = list_entry(atoms->work_list.prev, struct work_atom, list); |
cdce9d73 | 1083 | |
b1ffe8f3 | 1084 | if (atom->state != THREAD_WAIT_CPU) |
cdce9d73 FW |
1085 | return; |
1086 | ||
b1ffe8f3 IM |
1087 | if (timestamp < atom->wake_up_time) { |
1088 | atom->state = THREAD_IGNORE; | |
cdce9d73 FW |
1089 | return; |
1090 | } | |
1091 | ||
b1ffe8f3 IM |
1092 | atom->state = THREAD_SCHED_IN; |
1093 | atom->sched_in_time = timestamp; | |
66685678 | 1094 | |
b1ffe8f3 | 1095 | delta = atom->sched_in_time - atom->wake_up_time; |
66685678 | 1096 | atoms->total_lat += delta; |
3786310a | 1097 | if (delta > atoms->max_lat) { |
66685678 | 1098 | atoms->max_lat = delta; |
3786310a FW |
1099 | atoms->max_lat_at = timestamp; |
1100 | } | |
66685678 | 1101 | atoms->nb_atoms++; |
cdce9d73 FW |
1102 | } |
1103 | ||
9ec3f4e4 | 1104 | static int latency_switch_event(struct perf_sched *sched, |
32dcd021 | 1105 | struct evsel *evsel, |
9ec3f4e4 ACM |
1106 | struct perf_sample *sample, |
1107 | struct machine *machine) | |
cdce9d73 | 1108 | { |
9ec3f4e4 ACM |
1109 | const u32 prev_pid = perf_evsel__intval(evsel, sample, "prev_pid"), |
1110 | next_pid = perf_evsel__intval(evsel, sample, "next_pid"); | |
1111 | const u64 prev_state = perf_evsel__intval(evsel, sample, "prev_state"); | |
39aeb52f | 1112 | struct work_atoms *out_events, *in_events; |
cdce9d73 | 1113 | struct thread *sched_out, *sched_in; |
7f7f8d0b | 1114 | u64 timestamp0, timestamp = sample->time; |
b91fc39f | 1115 | int cpu = sample->cpu, err = -1; |
ea92ed5a IM |
1116 | s64 delta; |
1117 | ||
39aeb52f | 1118 | BUG_ON(cpu >= MAX_CPUS || cpu < 0); |
ea92ed5a | 1119 | |
0e9b07e5 ACM |
1120 | timestamp0 = sched->cpu_last_switched[cpu]; |
1121 | sched->cpu_last_switched[cpu] = timestamp; | |
ea92ed5a IM |
1122 | if (timestamp0) |
1123 | delta = timestamp - timestamp0; | |
1124 | else | |
1125 | delta = 0; | |
1126 | ||
a116e05d ACM |
1127 | if (delta < 0) { |
1128 | pr_err("hm, delta: %" PRIu64 " < 0 ?\n", delta); | |
1129 | return -1; | |
1130 | } | |
cdce9d73 | 1131 | |
1fcb8768 AH |
1132 | sched_out = machine__findnew_thread(machine, -1, prev_pid); |
1133 | sched_in = machine__findnew_thread(machine, -1, next_pid); | |
b91fc39f ACM |
1134 | if (sched_out == NULL || sched_in == NULL) |
1135 | goto out_put; | |
cdce9d73 | 1136 | |
0e9b07e5 | 1137 | out_events = thread_atoms_search(&sched->atom_root, sched_out, &sched->cmp_pid); |
39aeb52f | 1138 | if (!out_events) { |
0e9b07e5 | 1139 | if (thread_atoms_insert(sched, sched_out)) |
b91fc39f | 1140 | goto out_put; |
0e9b07e5 | 1141 | out_events = thread_atoms_search(&sched->atom_root, sched_out, &sched->cmp_pid); |
a116e05d ACM |
1142 | if (!out_events) { |
1143 | pr_err("out-event: Internal tree error"); | |
b91fc39f | 1144 | goto out_put; |
a116e05d | 1145 | } |
39aeb52f | 1146 | } |
9ec3f4e4 | 1147 | if (add_sched_out_event(out_events, sched_out_state(prev_state), timestamp)) |
a116e05d | 1148 | return -1; |
39aeb52f | 1149 | |
0e9b07e5 | 1150 | in_events = thread_atoms_search(&sched->atom_root, sched_in, &sched->cmp_pid); |
39aeb52f | 1151 | if (!in_events) { |
0e9b07e5 | 1152 | if (thread_atoms_insert(sched, sched_in)) |
b91fc39f | 1153 | goto out_put; |
0e9b07e5 | 1154 | in_events = thread_atoms_search(&sched->atom_root, sched_in, &sched->cmp_pid); |
a116e05d ACM |
1155 | if (!in_events) { |
1156 | pr_err("in-event: Internal tree error"); | |
b91fc39f | 1157 | goto out_put; |
a116e05d | 1158 | } |
39aeb52f | 1159 | /* |
1160 | * Take came in we have not heard about yet, | |
1161 | * add in an initial atom in runnable state: | |
1162 | */ | |
a116e05d | 1163 | if (add_sched_out_event(in_events, 'R', timestamp)) |
b91fc39f | 1164 | goto out_put; |
cdce9d73 | 1165 | } |
39aeb52f | 1166 | add_sched_in_event(in_events, timestamp); |
b91fc39f ACM |
1167 | err = 0; |
1168 | out_put: | |
1169 | thread__put(sched_out); | |
1170 | thread__put(sched_in); | |
1171 | return err; | |
39aeb52f | 1172 | } |
cdce9d73 | 1173 | |
9ec3f4e4 | 1174 | static int latency_runtime_event(struct perf_sched *sched, |
32dcd021 | 1175 | struct evsel *evsel, |
9ec3f4e4 ACM |
1176 | struct perf_sample *sample, |
1177 | struct machine *machine) | |
39aeb52f | 1178 | { |
9ec3f4e4 ACM |
1179 | const u32 pid = perf_evsel__intval(evsel, sample, "pid"); |
1180 | const u64 runtime = perf_evsel__intval(evsel, sample, "runtime"); | |
1fcb8768 | 1181 | struct thread *thread = machine__findnew_thread(machine, -1, pid); |
0e9b07e5 | 1182 | struct work_atoms *atoms = thread_atoms_search(&sched->atom_root, thread, &sched->cmp_pid); |
7f7f8d0b | 1183 | u64 timestamp = sample->time; |
b91fc39f ACM |
1184 | int cpu = sample->cpu, err = -1; |
1185 | ||
1186 | if (thread == NULL) | |
1187 | return -1; | |
39aeb52f | 1188 | |
1189 | BUG_ON(cpu >= MAX_CPUS || cpu < 0); | |
39aeb52f | 1190 | if (!atoms) { |
0e9b07e5 | 1191 | if (thread_atoms_insert(sched, thread)) |
b91fc39f | 1192 | goto out_put; |
0e9b07e5 | 1193 | atoms = thread_atoms_search(&sched->atom_root, thread, &sched->cmp_pid); |
a116e05d | 1194 | if (!atoms) { |
60b7d14a | 1195 | pr_err("in-event: Internal tree error"); |
b91fc39f | 1196 | goto out_put; |
a116e05d ACM |
1197 | } |
1198 | if (add_sched_out_event(atoms, 'R', timestamp)) | |
b91fc39f | 1199 | goto out_put; |
cdce9d73 FW |
1200 | } |
1201 | ||
9ec3f4e4 | 1202 | add_runtime_event(atoms, runtime, timestamp); |
b91fc39f ACM |
1203 | err = 0; |
1204 | out_put: | |
1205 | thread__put(thread); | |
1206 | return err; | |
cdce9d73 FW |
1207 | } |
1208 | ||
9ec3f4e4 | 1209 | static int latency_wakeup_event(struct perf_sched *sched, |
32dcd021 | 1210 | struct evsel *evsel, |
9ec3f4e4 ACM |
1211 | struct perf_sample *sample, |
1212 | struct machine *machine) | |
cdce9d73 | 1213 | { |
0680ee7d | 1214 | const u32 pid = perf_evsel__intval(evsel, sample, "pid"); |
39aeb52f | 1215 | struct work_atoms *atoms; |
b1ffe8f3 | 1216 | struct work_atom *atom; |
cdce9d73 | 1217 | struct thread *wakee; |
7f7f8d0b | 1218 | u64 timestamp = sample->time; |
b91fc39f | 1219 | int err = -1; |
cdce9d73 | 1220 | |
1fcb8768 | 1221 | wakee = machine__findnew_thread(machine, -1, pid); |
b91fc39f ACM |
1222 | if (wakee == NULL) |
1223 | return -1; | |
0e9b07e5 | 1224 | atoms = thread_atoms_search(&sched->atom_root, wakee, &sched->cmp_pid); |
17562205 | 1225 | if (!atoms) { |
0e9b07e5 | 1226 | if (thread_atoms_insert(sched, wakee)) |
b91fc39f | 1227 | goto out_put; |
0e9b07e5 | 1228 | atoms = thread_atoms_search(&sched->atom_root, wakee, &sched->cmp_pid); |
a116e05d | 1229 | if (!atoms) { |
60b7d14a | 1230 | pr_err("wakeup-event: Internal tree error"); |
b91fc39f | 1231 | goto out_put; |
a116e05d ACM |
1232 | } |
1233 | if (add_sched_out_event(atoms, 'S', timestamp)) | |
b91fc39f | 1234 | goto out_put; |
cdce9d73 FW |
1235 | } |
1236 | ||
39aeb52f | 1237 | BUG_ON(list_empty(&atoms->work_list)); |
cdce9d73 | 1238 | |
39aeb52f | 1239 | atom = list_entry(atoms->work_list.prev, struct work_atom, list); |
cdce9d73 | 1240 | |
55ffb7a6 | 1241 | /* |
67d6259d DY |
1242 | * As we do not guarantee the wakeup event happens when |
1243 | * task is out of run queue, also may happen when task is | |
1244 | * on run queue and wakeup only change ->state to TASK_RUNNING, | |
1245 | * then we should not set the ->wake_up_time when wake up a | |
1246 | * task which is on run queue. | |
1247 | * | |
55ffb7a6 MG |
1248 | * You WILL be missing events if you've recorded only |
1249 | * one CPU, or are only looking at only one, so don't | |
67d6259d | 1250 | * skip in this case. |
55ffb7a6 | 1251 | */ |
0e9b07e5 | 1252 | if (sched->profile_cpu == -1 && atom->state != THREAD_SLEEPING) |
b91fc39f | 1253 | goto out_ok; |
cdce9d73 | 1254 | |
0e9b07e5 | 1255 | sched->nr_timestamps++; |
ea57c4f5 | 1256 | if (atom->sched_out_time > timestamp) { |
0e9b07e5 | 1257 | sched->nr_unordered_timestamps++; |
b91fc39f | 1258 | goto out_ok; |
ea57c4f5 | 1259 | } |
aa1ab9d2 | 1260 | |
b1ffe8f3 IM |
1261 | atom->state = THREAD_WAIT_CPU; |
1262 | atom->wake_up_time = timestamp; | |
b91fc39f ACM |
1263 | out_ok: |
1264 | err = 0; | |
1265 | out_put: | |
1266 | thread__put(wakee); | |
1267 | return err; | |
cdce9d73 FW |
1268 | } |
1269 | ||
9ec3f4e4 | 1270 | static int latency_migrate_task_event(struct perf_sched *sched, |
32dcd021 | 1271 | struct evsel *evsel, |
9ec3f4e4 ACM |
1272 | struct perf_sample *sample, |
1273 | struct machine *machine) | |
55ffb7a6 | 1274 | { |
9ec3f4e4 | 1275 | const u32 pid = perf_evsel__intval(evsel, sample, "pid"); |
7f7f8d0b | 1276 | u64 timestamp = sample->time; |
55ffb7a6 MG |
1277 | struct work_atoms *atoms; |
1278 | struct work_atom *atom; | |
1279 | struct thread *migrant; | |
b91fc39f | 1280 | int err = -1; |
55ffb7a6 MG |
1281 | |
1282 | /* | |
1283 | * Only need to worry about migration when profiling one CPU. | |
1284 | */ | |
0e9b07e5 | 1285 | if (sched->profile_cpu == -1) |
a116e05d | 1286 | return 0; |
55ffb7a6 | 1287 | |
1fcb8768 | 1288 | migrant = machine__findnew_thread(machine, -1, pid); |
b91fc39f ACM |
1289 | if (migrant == NULL) |
1290 | return -1; | |
0e9b07e5 | 1291 | atoms = thread_atoms_search(&sched->atom_root, migrant, &sched->cmp_pid); |
55ffb7a6 | 1292 | if (!atoms) { |
0e9b07e5 | 1293 | if (thread_atoms_insert(sched, migrant)) |
b91fc39f | 1294 | goto out_put; |
b9c5143a | 1295 | register_pid(sched, migrant->tid, thread__comm_str(migrant)); |
0e9b07e5 | 1296 | atoms = thread_atoms_search(&sched->atom_root, migrant, &sched->cmp_pid); |
a116e05d | 1297 | if (!atoms) { |
60b7d14a | 1298 | pr_err("migration-event: Internal tree error"); |
b91fc39f | 1299 | goto out_put; |
a116e05d ACM |
1300 | } |
1301 | if (add_sched_out_event(atoms, 'R', timestamp)) | |
b91fc39f | 1302 | goto out_put; |
55ffb7a6 MG |
1303 | } |
1304 | ||
1305 | BUG_ON(list_empty(&atoms->work_list)); | |
1306 | ||
1307 | atom = list_entry(atoms->work_list.prev, struct work_atom, list); | |
1308 | atom->sched_in_time = atom->sched_out_time = atom->wake_up_time = timestamp; | |
1309 | ||
0e9b07e5 | 1310 | sched->nr_timestamps++; |
55ffb7a6 MG |
1311 | |
1312 | if (atom->sched_out_time > timestamp) | |
0e9b07e5 | 1313 | sched->nr_unordered_timestamps++; |
b91fc39f ACM |
1314 | err = 0; |
1315 | out_put: | |
1316 | thread__put(migrant); | |
1317 | return err; | |
55ffb7a6 MG |
1318 | } |
1319 | ||
0e9b07e5 | 1320 | static void output_lat_thread(struct perf_sched *sched, struct work_atoms *work_list) |
cdce9d73 | 1321 | { |
cdce9d73 FW |
1322 | int i; |
1323 | int ret; | |
66685678 | 1324 | u64 avg; |
99620a5d | 1325 | char max_lat_at[32]; |
cdce9d73 | 1326 | |
39aeb52f | 1327 | if (!work_list->nb_atoms) |
cdce9d73 | 1328 | return; |
ea57c4f5 IM |
1329 | /* |
1330 | * Ignore idle threads: | |
1331 | */ | |
b9c5143a | 1332 | if (!strcmp(thread__comm_str(work_list->thread), "swapper")) |
ea57c4f5 | 1333 | return; |
cdce9d73 | 1334 | |
0e9b07e5 ACM |
1335 | sched->all_runtime += work_list->total_runtime; |
1336 | sched->all_count += work_list->nb_atoms; | |
66685678 | 1337 | |
2f80dd44 JB |
1338 | if (work_list->num_merged > 1) |
1339 | ret = printf(" %s:(%d) ", thread__comm_str(work_list->thread), work_list->num_merged); | |
1340 | else | |
1341 | ret = printf(" %s:%d ", thread__comm_str(work_list->thread), work_list->thread->tid); | |
cdce9d73 | 1342 | |
08f69e6c | 1343 | for (i = 0; i < 24 - ret; i++) |
cdce9d73 FW |
1344 | printf(" "); |
1345 | ||
39aeb52f | 1346 | avg = work_list->total_lat / work_list->nb_atoms; |
99620a5d | 1347 | timestamp__scnprintf_usec(work_list->max_lat_at, max_lat_at, sizeof(max_lat_at)); |
cdce9d73 | 1348 | |
99620a5d | 1349 | printf("|%11.3f ms |%9" PRIu64 " | avg:%9.3f ms | max:%9.3f ms | max at: %13s s\n", |
4fc76e49 ACM |
1350 | (double)work_list->total_runtime / NSEC_PER_MSEC, |
1351 | work_list->nb_atoms, (double)avg / NSEC_PER_MSEC, | |
1352 | (double)work_list->max_lat / NSEC_PER_MSEC, | |
99620a5d | 1353 | max_lat_at); |
cdce9d73 FW |
1354 | } |
1355 | ||
39aeb52f | 1356 | static int pid_cmp(struct work_atoms *l, struct work_atoms *r) |
daa1d7a5 | 1357 | { |
0014de17 JO |
1358 | if (l->thread == r->thread) |
1359 | return 0; | |
38051234 | 1360 | if (l->thread->tid < r->thread->tid) |
daa1d7a5 | 1361 | return -1; |
38051234 | 1362 | if (l->thread->tid > r->thread->tid) |
daa1d7a5 | 1363 | return 1; |
0014de17 | 1364 | return (int)(l->thread - r->thread); |
daa1d7a5 FW |
1365 | } |
1366 | ||
39aeb52f | 1367 | static int avg_cmp(struct work_atoms *l, struct work_atoms *r) |
daa1d7a5 FW |
1368 | { |
1369 | u64 avgl, avgr; | |
1370 | ||
1371 | if (!l->nb_atoms) | |
1372 | return -1; | |
1373 | ||
1374 | if (!r->nb_atoms) | |
1375 | return 1; | |
1376 | ||
1377 | avgl = l->total_lat / l->nb_atoms; | |
1378 | avgr = r->total_lat / r->nb_atoms; | |
1379 | ||
1380 | if (avgl < avgr) | |
1381 | return -1; | |
1382 | if (avgl > avgr) | |
1383 | return 1; | |
1384 | ||
1385 | return 0; | |
1386 | } | |
1387 | ||
39aeb52f | 1388 | static int max_cmp(struct work_atoms *l, struct work_atoms *r) |
daa1d7a5 FW |
1389 | { |
1390 | if (l->max_lat < r->max_lat) | |
1391 | return -1; | |
1392 | if (l->max_lat > r->max_lat) | |
1393 | return 1; | |
1394 | ||
1395 | return 0; | |
1396 | } | |
1397 | ||
39aeb52f | 1398 | static int switch_cmp(struct work_atoms *l, struct work_atoms *r) |
daa1d7a5 FW |
1399 | { |
1400 | if (l->nb_atoms < r->nb_atoms) | |
1401 | return -1; | |
1402 | if (l->nb_atoms > r->nb_atoms) | |
1403 | return 1; | |
1404 | ||
1405 | return 0; | |
1406 | } | |
1407 | ||
39aeb52f | 1408 | static int runtime_cmp(struct work_atoms *l, struct work_atoms *r) |
daa1d7a5 FW |
1409 | { |
1410 | if (l->total_runtime < r->total_runtime) | |
1411 | return -1; | |
1412 | if (l->total_runtime > r->total_runtime) | |
1413 | return 1; | |
1414 | ||
1415 | return 0; | |
1416 | } | |
1417 | ||
cbef79a8 | 1418 | static int sort_dimension__add(const char *tok, struct list_head *list) |
daa1d7a5 | 1419 | { |
0e9b07e5 ACM |
1420 | size_t i; |
1421 | static struct sort_dimension avg_sort_dimension = { | |
1422 | .name = "avg", | |
1423 | .cmp = avg_cmp, | |
1424 | }; | |
1425 | static struct sort_dimension max_sort_dimension = { | |
1426 | .name = "max", | |
1427 | .cmp = max_cmp, | |
1428 | }; | |
1429 | static struct sort_dimension pid_sort_dimension = { | |
1430 | .name = "pid", | |
1431 | .cmp = pid_cmp, | |
1432 | }; | |
1433 | static struct sort_dimension runtime_sort_dimension = { | |
1434 | .name = "runtime", | |
1435 | .cmp = runtime_cmp, | |
1436 | }; | |
1437 | static struct sort_dimension switch_sort_dimension = { | |
1438 | .name = "switch", | |
1439 | .cmp = switch_cmp, | |
1440 | }; | |
1441 | struct sort_dimension *available_sorts[] = { | |
1442 | &pid_sort_dimension, | |
1443 | &avg_sort_dimension, | |
1444 | &max_sort_dimension, | |
1445 | &switch_sort_dimension, | |
1446 | &runtime_sort_dimension, | |
1447 | }; | |
daa1d7a5 | 1448 | |
0e9b07e5 | 1449 | for (i = 0; i < ARRAY_SIZE(available_sorts); i++) { |
daa1d7a5 FW |
1450 | if (!strcmp(available_sorts[i]->name, tok)) { |
1451 | list_add_tail(&available_sorts[i]->list, list); | |
1452 | ||
1453 | return 0; | |
1454 | } | |
1455 | } | |
1456 | ||
1457 | return -1; | |
1458 | } | |
1459 | ||
0e9b07e5 | 1460 | static void perf_sched__sort_lat(struct perf_sched *sched) |
daa1d7a5 FW |
1461 | { |
1462 | struct rb_node *node; | |
cb4c13a5 | 1463 | struct rb_root_cached *root = &sched->atom_root; |
2f80dd44 | 1464 | again: |
daa1d7a5 | 1465 | for (;;) { |
39aeb52f | 1466 | struct work_atoms *data; |
cb4c13a5 | 1467 | node = rb_first_cached(root); |
daa1d7a5 FW |
1468 | if (!node) |
1469 | break; | |
1470 | ||
cb4c13a5 | 1471 | rb_erase_cached(node, root); |
39aeb52f | 1472 | data = rb_entry(node, struct work_atoms, node); |
0e9b07e5 | 1473 | __thread_latency_insert(&sched->sorted_atom_root, data, &sched->sort_list); |
daa1d7a5 | 1474 | } |
2f80dd44 JB |
1475 | if (root == &sched->atom_root) { |
1476 | root = &sched->merged_atom_root; | |
1477 | goto again; | |
1478 | } | |
daa1d7a5 FW |
1479 | } |
1480 | ||
0e9b07e5 | 1481 | static int process_sched_wakeup_event(struct perf_tool *tool, |
32dcd021 | 1482 | struct evsel *evsel, |
1d037ca1 | 1483 | struct perf_sample *sample, |
4218e673 | 1484 | struct machine *machine) |
419ab0d6 | 1485 | { |
0e9b07e5 | 1486 | struct perf_sched *sched = container_of(tool, struct perf_sched, tool); |
419ab0d6 | 1487 | |
9ec3f4e4 ACM |
1488 | if (sched->tp_handler->wakeup_event) |
1489 | return sched->tp_handler->wakeup_event(sched, evsel, sample, machine); | |
a116e05d | 1490 | |
2b7fcbc5 | 1491 | return 0; |
419ab0d6 FW |
1492 | } |
1493 | ||
a151a37a JO |
1494 | union map_priv { |
1495 | void *ptr; | |
1496 | bool color; | |
1497 | }; | |
1498 | ||
1499 | static bool thread__has_color(struct thread *thread) | |
1500 | { | |
1501 | union map_priv priv = { | |
1502 | .ptr = thread__priv(thread), | |
1503 | }; | |
1504 | ||
1505 | return priv.color; | |
1506 | } | |
1507 | ||
1508 | static struct thread* | |
1509 | map__findnew_thread(struct perf_sched *sched, struct machine *machine, pid_t pid, pid_t tid) | |
1510 | { | |
1511 | struct thread *thread = machine__findnew_thread(machine, pid, tid); | |
1512 | union map_priv priv = { | |
1513 | .color = false, | |
1514 | }; | |
1515 | ||
1516 | if (!sched->map.color_pids || !thread || thread__priv(thread)) | |
1517 | return thread; | |
1518 | ||
1519 | if (thread_map__has(sched->map.color_pids, tid)) | |
1520 | priv.color = true; | |
1521 | ||
1522 | thread__set_priv(thread, priv.ptr); | |
1523 | return thread; | |
1524 | } | |
1525 | ||
32dcd021 | 1526 | static int map_switch_event(struct perf_sched *sched, struct evsel *evsel, |
9ec3f4e4 | 1527 | struct perf_sample *sample, struct machine *machine) |
0ec04e16 | 1528 | { |
9d372ca5 DY |
1529 | const u32 next_pid = perf_evsel__intval(evsel, sample, "next_pid"); |
1530 | struct thread *sched_in; | |
8640da9f | 1531 | struct thread_runtime *tr; |
0ec04e16 | 1532 | int new_shortname; |
7f7f8d0b | 1533 | u64 timestamp0, timestamp = sample->time; |
0ec04e16 | 1534 | s64 delta; |
99623c62 JO |
1535 | int i, this_cpu = sample->cpu; |
1536 | int cpus_nr; | |
1537 | bool new_cpu = false; | |
8cd91195 | 1538 | const char *color = PERF_COLOR_NORMAL; |
99620a5d | 1539 | char stimestamp[32]; |
0ec04e16 IM |
1540 | |
1541 | BUG_ON(this_cpu >= MAX_CPUS || this_cpu < 0); | |
1542 | ||
0e9b07e5 ACM |
1543 | if (this_cpu > sched->max_cpu) |
1544 | sched->max_cpu = this_cpu; | |
0ec04e16 | 1545 | |
99623c62 JO |
1546 | if (sched->map.comp) { |
1547 | cpus_nr = bitmap_weight(sched->map.comp_cpus_mask, MAX_CPUS); | |
1548 | if (!test_and_set_bit(this_cpu, sched->map.comp_cpus_mask)) { | |
1549 | sched->map.comp_cpus[cpus_nr++] = this_cpu; | |
1550 | new_cpu = true; | |
1551 | } | |
1552 | } else | |
1553 | cpus_nr = sched->max_cpu; | |
1554 | ||
0e9b07e5 ACM |
1555 | timestamp0 = sched->cpu_last_switched[this_cpu]; |
1556 | sched->cpu_last_switched[this_cpu] = timestamp; | |
0ec04e16 IM |
1557 | if (timestamp0) |
1558 | delta = timestamp - timestamp0; | |
1559 | else | |
1560 | delta = 0; | |
1561 | ||
a116e05d | 1562 | if (delta < 0) { |
60b7d14a | 1563 | pr_err("hm, delta: %" PRIu64 " < 0 ?\n", delta); |
a116e05d ACM |
1564 | return -1; |
1565 | } | |
0ec04e16 | 1566 | |
a151a37a | 1567 | sched_in = map__findnew_thread(sched, machine, -1, next_pid); |
b91fc39f ACM |
1568 | if (sched_in == NULL) |
1569 | return -1; | |
0ec04e16 | 1570 | |
8640da9f CD |
1571 | tr = thread__get_runtime(sched_in); |
1572 | if (tr == NULL) { | |
1573 | thread__put(sched_in); | |
1574 | return -1; | |
1575 | } | |
1576 | ||
b91fc39f | 1577 | sched->curr_thread[this_cpu] = thread__get(sched_in); |
0ec04e16 IM |
1578 | |
1579 | printf(" "); | |
1580 | ||
1581 | new_shortname = 0; | |
8640da9f | 1582 | if (!tr->shortname[0]) { |
6bcab4e1 D |
1583 | if (!strcmp(thread__comm_str(sched_in), "swapper")) { |
1584 | /* | |
1585 | * Don't allocate a letter-number for swapper:0 | |
1586 | * as a shortname. Instead, we use '.' for it. | |
1587 | */ | |
8640da9f CD |
1588 | tr->shortname[0] = '.'; |
1589 | tr->shortname[1] = ' '; | |
0ec04e16 | 1590 | } else { |
8640da9f CD |
1591 | tr->shortname[0] = sched->next_shortname1; |
1592 | tr->shortname[1] = sched->next_shortname2; | |
6bcab4e1 D |
1593 | |
1594 | if (sched->next_shortname1 < 'Z') { | |
1595 | sched->next_shortname1++; | |
0ec04e16 | 1596 | } else { |
6bcab4e1 D |
1597 | sched->next_shortname1 = 'A'; |
1598 | if (sched->next_shortname2 < '9') | |
1599 | sched->next_shortname2++; | |
1600 | else | |
1601 | sched->next_shortname2 = '0'; | |
0ec04e16 IM |
1602 | } |
1603 | } | |
1604 | new_shortname = 1; | |
1605 | } | |
1606 | ||
99623c62 JO |
1607 | for (i = 0; i < cpus_nr; i++) { |
1608 | int cpu = sched->map.comp ? sched->map.comp_cpus[i] : i; | |
a151a37a | 1609 | struct thread *curr_thread = sched->curr_thread[cpu]; |
8640da9f | 1610 | struct thread_runtime *curr_tr; |
a151a37a | 1611 | const char *pid_color = color; |
cf294f24 | 1612 | const char *cpu_color = color; |
a151a37a JO |
1613 | |
1614 | if (curr_thread && thread__has_color(curr_thread)) | |
1615 | pid_color = COLOR_PIDS; | |
99623c62 | 1616 | |
73643bb6 JO |
1617 | if (sched->map.cpus && !cpu_map__has(sched->map.cpus, cpu)) |
1618 | continue; | |
1619 | ||
cf294f24 JO |
1620 | if (sched->map.color_cpus && cpu_map__has(sched->map.color_cpus, cpu)) |
1621 | cpu_color = COLOR_CPUS; | |
1622 | ||
0ec04e16 | 1623 | if (cpu != this_cpu) |
1208bb27 | 1624 | color_fprintf(stdout, color, " "); |
0ec04e16 | 1625 | else |
cf294f24 | 1626 | color_fprintf(stdout, cpu_color, "*"); |
0ec04e16 | 1627 | |
8640da9f CD |
1628 | if (sched->curr_thread[cpu]) { |
1629 | curr_tr = thread__get_runtime(sched->curr_thread[cpu]); | |
1630 | if (curr_tr == NULL) { | |
1631 | thread__put(sched_in); | |
1632 | return -1; | |
1633 | } | |
1634 | color_fprintf(stdout, pid_color, "%2s ", curr_tr->shortname); | |
1635 | } else | |
8cd91195 | 1636 | color_fprintf(stdout, color, " "); |
0ec04e16 IM |
1637 | } |
1638 | ||
73643bb6 JO |
1639 | if (sched->map.cpus && !cpu_map__has(sched->map.cpus, this_cpu)) |
1640 | goto out; | |
1641 | ||
99620a5d NK |
1642 | timestamp__scnprintf_usec(timestamp, stimestamp, sizeof(stimestamp)); |
1643 | color_fprintf(stdout, color, " %12s secs ", stimestamp); | |
99a3c3a9 | 1644 | if (new_shortname || tr->comm_changed || (verbose > 0 && sched_in->tid)) { |
a151a37a JO |
1645 | const char *pid_color = color; |
1646 | ||
1647 | if (thread__has_color(sched_in)) | |
1648 | pid_color = COLOR_PIDS; | |
1649 | ||
1650 | color_fprintf(stdout, pid_color, "%s => %s:%d", | |
8640da9f | 1651 | tr->shortname, thread__comm_str(sched_in), sched_in->tid); |
99a3c3a9 | 1652 | tr->comm_changed = false; |
0ec04e16 | 1653 | } |
a116e05d | 1654 | |
99623c62 | 1655 | if (sched->map.comp && new_cpu) |
8cd91195 | 1656 | color_fprintf(stdout, color, " (CPU %d)", this_cpu); |
99623c62 | 1657 | |
73643bb6 | 1658 | out: |
8cd91195 | 1659 | color_fprintf(stdout, color, "\n"); |
99623c62 | 1660 | |
b91fc39f ACM |
1661 | thread__put(sched_in); |
1662 | ||
a116e05d | 1663 | return 0; |
0ec04e16 IM |
1664 | } |
1665 | ||
0e9b07e5 | 1666 | static int process_sched_switch_event(struct perf_tool *tool, |
32dcd021 | 1667 | struct evsel *evsel, |
1d037ca1 | 1668 | struct perf_sample *sample, |
4218e673 | 1669 | struct machine *machine) |
419ab0d6 | 1670 | { |
0e9b07e5 | 1671 | struct perf_sched *sched = container_of(tool, struct perf_sched, tool); |
a116e05d | 1672 | int this_cpu = sample->cpu, err = 0; |
2b7fcbc5 ACM |
1673 | u32 prev_pid = perf_evsel__intval(evsel, sample, "prev_pid"), |
1674 | next_pid = perf_evsel__intval(evsel, sample, "next_pid"); | |
419ab0d6 | 1675 | |
0e9b07e5 | 1676 | if (sched->curr_pid[this_cpu] != (u32)-1) { |
c8a37751 IM |
1677 | /* |
1678 | * Are we trying to switch away a PID that is | |
1679 | * not current? | |
1680 | */ | |
2b7fcbc5 | 1681 | if (sched->curr_pid[this_cpu] != prev_pid) |
0e9b07e5 | 1682 | sched->nr_context_switch_bugs++; |
c8a37751 | 1683 | } |
c8a37751 | 1684 | |
9ec3f4e4 ACM |
1685 | if (sched->tp_handler->switch_event) |
1686 | err = sched->tp_handler->switch_event(sched, evsel, sample, machine); | |
2b7fcbc5 ACM |
1687 | |
1688 | sched->curr_pid[this_cpu] = next_pid; | |
a116e05d | 1689 | return err; |
419ab0d6 FW |
1690 | } |
1691 | ||
0e9b07e5 | 1692 | static int process_sched_runtime_event(struct perf_tool *tool, |
32dcd021 | 1693 | struct evsel *evsel, |
1d037ca1 | 1694 | struct perf_sample *sample, |
4218e673 | 1695 | struct machine *machine) |
39aeb52f | 1696 | { |
0e9b07e5 | 1697 | struct perf_sched *sched = container_of(tool, struct perf_sched, tool); |
39aeb52f | 1698 | |
9ec3f4e4 ACM |
1699 | if (sched->tp_handler->runtime_event) |
1700 | return sched->tp_handler->runtime_event(sched, evsel, sample, machine); | |
a116e05d | 1701 | |
2b7fcbc5 | 1702 | return 0; |
39aeb52f | 1703 | } |
1704 | ||
cb627505 DA |
1705 | static int perf_sched__process_fork_event(struct perf_tool *tool, |
1706 | union perf_event *event, | |
1707 | struct perf_sample *sample, | |
1708 | struct machine *machine) | |
fbf94829 | 1709 | { |
0e9b07e5 | 1710 | struct perf_sched *sched = container_of(tool, struct perf_sched, tool); |
46538818 | 1711 | |
cb627505 DA |
1712 | /* run the fork event through the perf machineruy */ |
1713 | perf_event__process_fork(tool, event, sample, machine); | |
1714 | ||
1715 | /* and then run additional processing needed for this command */ | |
9ec3f4e4 | 1716 | if (sched->tp_handler->fork_event) |
cb627505 | 1717 | return sched->tp_handler->fork_event(sched, event, machine); |
a116e05d | 1718 | |
2b7fcbc5 | 1719 | return 0; |
fbf94829 IM |
1720 | } |
1721 | ||
0e9b07e5 | 1722 | static int process_sched_migrate_task_event(struct perf_tool *tool, |
32dcd021 | 1723 | struct evsel *evsel, |
1d037ca1 | 1724 | struct perf_sample *sample, |
4218e673 | 1725 | struct machine *machine) |
55ffb7a6 | 1726 | { |
0e9b07e5 | 1727 | struct perf_sched *sched = container_of(tool, struct perf_sched, tool); |
55ffb7a6 | 1728 | |
9ec3f4e4 ACM |
1729 | if (sched->tp_handler->migrate_task_event) |
1730 | return sched->tp_handler->migrate_task_event(sched, evsel, sample, machine); | |
a116e05d | 1731 | |
2b7fcbc5 | 1732 | return 0; |
55ffb7a6 MG |
1733 | } |
1734 | ||
a116e05d | 1735 | typedef int (*tracepoint_handler)(struct perf_tool *tool, |
32dcd021 | 1736 | struct evsel *evsel, |
a116e05d | 1737 | struct perf_sample *sample, |
4218e673 | 1738 | struct machine *machine); |
ec156764 | 1739 | |
1d037ca1 IT |
1740 | static int perf_sched__process_tracepoint_sample(struct perf_tool *tool __maybe_unused, |
1741 | union perf_event *event __maybe_unused, | |
ee29be62 | 1742 | struct perf_sample *sample, |
32dcd021 | 1743 | struct evsel *evsel, |
ee29be62 | 1744 | struct machine *machine) |
0a02ad93 | 1745 | { |
a116e05d | 1746 | int err = 0; |
0a02ad93 | 1747 | |
744a9719 ACM |
1748 | if (evsel->handler != NULL) { |
1749 | tracepoint_handler f = evsel->handler; | |
2b7fcbc5 | 1750 | err = f(tool, evsel, sample, machine); |
ee29be62 | 1751 | } |
0a02ad93 | 1752 | |
a116e05d | 1753 | return err; |
0a02ad93 IM |
1754 | } |
1755 | ||
99a3c3a9 CD |
1756 | static int perf_sched__process_comm(struct perf_tool *tool __maybe_unused, |
1757 | union perf_event *event, | |
1758 | struct perf_sample *sample, | |
1759 | struct machine *machine) | |
1760 | { | |
1761 | struct thread *thread; | |
1762 | struct thread_runtime *tr; | |
1763 | int err; | |
1764 | ||
1765 | err = perf_event__process_comm(tool, event, sample, machine); | |
1766 | if (err) | |
1767 | return err; | |
1768 | ||
1769 | thread = machine__find_thread(machine, sample->pid, sample->tid); | |
1770 | if (!thread) { | |
1771 | pr_err("Internal error: can't find thread\n"); | |
1772 | return -1; | |
1773 | } | |
1774 | ||
1775 | tr = thread__get_runtime(thread); | |
1776 | if (tr == NULL) { | |
1777 | thread__put(thread); | |
1778 | return -1; | |
1779 | } | |
1780 | ||
1781 | tr->comm_changed = true; | |
1782 | thread__put(thread); | |
1783 | ||
1784 | return 0; | |
1785 | } | |
1786 | ||
ae536acf | 1787 | static int perf_sched__read_events(struct perf_sched *sched) |
0a02ad93 | 1788 | { |
32dcd021 | 1789 | const struct evsel_str_handler handlers[] = { |
ee29be62 ACM |
1790 | { "sched:sched_switch", process_sched_switch_event, }, |
1791 | { "sched:sched_stat_runtime", process_sched_runtime_event, }, | |
1792 | { "sched:sched_wakeup", process_sched_wakeup_event, }, | |
1793 | { "sched:sched_wakeup_new", process_sched_wakeup_event, }, | |
ee29be62 ACM |
1794 | { "sched:sched_migrate_task", process_sched_migrate_task_event, }, |
1795 | }; | |
da378962 | 1796 | struct perf_session *session; |
8ceb41d7 | 1797 | struct perf_data data = { |
2d4f2799 JO |
1798 | .path = input_name, |
1799 | .mode = PERF_DATA_MODE_READ, | |
1800 | .force = sched->force, | |
f5fc1412 | 1801 | }; |
ae536acf | 1802 | int rc = -1; |
da378962 | 1803 | |
8ceb41d7 | 1804 | session = perf_session__new(&data, false, &sched->tool); |
6ef81c55 MI |
1805 | if (IS_ERR(session)) { |
1806 | pr_debug("Error creating perf session"); | |
1807 | return PTR_ERR(session); | |
a116e05d | 1808 | } |
94c744b6 | 1809 | |
0a7e6d1b | 1810 | symbol__init(&session->header.env); |
04934106 | 1811 | |
a116e05d ACM |
1812 | if (perf_session__set_tracepoints_handlers(session, handlers)) |
1813 | goto out_delete; | |
ee29be62 | 1814 | |
cee75ac7 | 1815 | if (perf_session__has_traces(session, "record -R")) { |
b7b61cbe | 1816 | int err = perf_session__process_events(session); |
a116e05d ACM |
1817 | if (err) { |
1818 | pr_err("Failed to process events, error %d", err); | |
1819 | goto out_delete; | |
1820 | } | |
4c09bafa | 1821 | |
75be989a ACM |
1822 | sched->nr_events = session->evlist->stats.nr_events[0]; |
1823 | sched->nr_lost_events = session->evlist->stats.total_lost; | |
1824 | sched->nr_lost_chunks = session->evlist->stats.nr_events[PERF_RECORD_LOST]; | |
cee75ac7 | 1825 | } |
d549c769 | 1826 | |
ae536acf | 1827 | rc = 0; |
a116e05d ACM |
1828 | out_delete: |
1829 | perf_session__delete(session); | |
ae536acf | 1830 | return rc; |
0a02ad93 IM |
1831 | } |
1832 | ||
49394a2a DA |
1833 | /* |
1834 | * scheduling times are printed as msec.usec | |
1835 | */ | |
1836 | static inline void print_sched_time(unsigned long long nsecs, int width) | |
1837 | { | |
1838 | unsigned long msecs; | |
1839 | unsigned long usecs; | |
1840 | ||
1841 | msecs = nsecs / NSEC_PER_MSEC; | |
1842 | nsecs -= msecs * NSEC_PER_MSEC; | |
1843 | usecs = nsecs / NSEC_PER_USEC; | |
1844 | printf("%*lu.%03lu ", width, msecs, usecs); | |
1845 | } | |
1846 | ||
1847 | /* | |
1848 | * returns runtime data for event, allocating memory for it the | |
1849 | * first time it is used. | |
1850 | */ | |
32dcd021 | 1851 | static struct evsel_runtime *perf_evsel__get_runtime(struct evsel *evsel) |
49394a2a DA |
1852 | { |
1853 | struct evsel_runtime *r = evsel->priv; | |
1854 | ||
1855 | if (r == NULL) { | |
1856 | r = zalloc(sizeof(struct evsel_runtime)); | |
1857 | evsel->priv = r; | |
1858 | } | |
1859 | ||
1860 | return r; | |
1861 | } | |
1862 | ||
1863 | /* | |
1864 | * save last time event was seen per cpu | |
1865 | */ | |
32dcd021 | 1866 | static void perf_evsel__save_time(struct evsel *evsel, |
49394a2a DA |
1867 | u64 timestamp, u32 cpu) |
1868 | { | |
1869 | struct evsel_runtime *r = perf_evsel__get_runtime(evsel); | |
1870 | ||
1871 | if (r == NULL) | |
1872 | return; | |
1873 | ||
1874 | if ((cpu >= r->ncpu) || (r->last_time == NULL)) { | |
1875 | int i, n = __roundup_pow_of_two(cpu+1); | |
1876 | void *p = r->last_time; | |
1877 | ||
1878 | p = realloc(r->last_time, n * sizeof(u64)); | |
1879 | if (!p) | |
1880 | return; | |
1881 | ||
1882 | r->last_time = p; | |
1883 | for (i = r->ncpu; i < n; ++i) | |
1884 | r->last_time[i] = (u64) 0; | |
1885 | ||
1886 | r->ncpu = n; | |
1887 | } | |
1888 | ||
1889 | r->last_time[cpu] = timestamp; | |
1890 | } | |
1891 | ||
1892 | /* returns last time this event was seen on the given cpu */ | |
32dcd021 | 1893 | static u64 perf_evsel__get_time(struct evsel *evsel, u32 cpu) |
49394a2a DA |
1894 | { |
1895 | struct evsel_runtime *r = perf_evsel__get_runtime(evsel); | |
1896 | ||
1897 | if ((r == NULL) || (r->last_time == NULL) || (cpu >= r->ncpu)) | |
1898 | return 0; | |
1899 | ||
1900 | return r->last_time[cpu]; | |
1901 | } | |
1902 | ||
9b8087d7 | 1903 | static int comm_width = 30; |
49394a2a DA |
1904 | |
1905 | static char *timehist_get_commstr(struct thread *thread) | |
1906 | { | |
1907 | static char str[32]; | |
1908 | const char *comm = thread__comm_str(thread); | |
1909 | pid_t tid = thread->tid; | |
1910 | pid_t pid = thread->pid_; | |
1911 | int n; | |
1912 | ||
1913 | if (pid == 0) | |
1914 | n = scnprintf(str, sizeof(str), "%s", comm); | |
1915 | ||
1916 | else if (tid != pid) | |
1917 | n = scnprintf(str, sizeof(str), "%s[%d/%d]", comm, tid, pid); | |
1918 | ||
1919 | else | |
1920 | n = scnprintf(str, sizeof(str), "%s[%d]", comm, tid); | |
1921 | ||
1922 | if (n > comm_width) | |
1923 | comm_width = n; | |
1924 | ||
1925 | return str; | |
1926 | } | |
1927 | ||
a407b067 | 1928 | static void timehist_header(struct perf_sched *sched) |
49394a2a | 1929 | { |
a407b067 DA |
1930 | u32 ncpus = sched->max_cpu + 1; |
1931 | u32 i, j; | |
1932 | ||
49394a2a DA |
1933 | printf("%15s %6s ", "time", "cpu"); |
1934 | ||
a407b067 DA |
1935 | if (sched->show_cpu_visual) { |
1936 | printf(" "); | |
1937 | for (i = 0, j = 0; i < ncpus; ++i) { | |
1938 | printf("%x", j++); | |
1939 | if (j > 15) | |
1940 | j = 0; | |
1941 | } | |
1942 | printf(" "); | |
1943 | } | |
1944 | ||
0e6758e8 | 1945 | printf(" %-*s %9s %9s %9s", comm_width, |
49394a2a DA |
1946 | "task name", "wait time", "sch delay", "run time"); |
1947 | ||
414e050c NK |
1948 | if (sched->show_state) |
1949 | printf(" %s", "state"); | |
1950 | ||
49394a2a DA |
1951 | printf("\n"); |
1952 | ||
1953 | /* | |
1954 | * units row | |
1955 | */ | |
1956 | printf("%15s %-6s ", "", ""); | |
1957 | ||
a407b067 DA |
1958 | if (sched->show_cpu_visual) |
1959 | printf(" %*s ", ncpus, ""); | |
1960 | ||
414e050c | 1961 | printf(" %-*s %9s %9s %9s", comm_width, |
0e6758e8 | 1962 | "[tid/pid]", "(msec)", "(msec)", "(msec)"); |
49394a2a | 1963 | |
414e050c NK |
1964 | if (sched->show_state) |
1965 | printf(" %5s", ""); | |
1966 | ||
1967 | printf("\n"); | |
1968 | ||
49394a2a DA |
1969 | /* |
1970 | * separator | |
1971 | */ | |
1972 | printf("%.15s %.6s ", graph_dotted_line, graph_dotted_line); | |
1973 | ||
a407b067 DA |
1974 | if (sched->show_cpu_visual) |
1975 | printf(" %.*s ", ncpus, graph_dotted_line); | |
1976 | ||
0e6758e8 | 1977 | printf(" %.*s %.9s %.9s %.9s", comm_width, |
49394a2a DA |
1978 | graph_dotted_line, graph_dotted_line, graph_dotted_line, |
1979 | graph_dotted_line); | |
1980 | ||
414e050c NK |
1981 | if (sched->show_state) |
1982 | printf(" %.5s", graph_dotted_line); | |
1983 | ||
49394a2a DA |
1984 | printf("\n"); |
1985 | } | |
1986 | ||
414e050c NK |
1987 | static char task_state_char(struct thread *thread, int state) |
1988 | { | |
1989 | static const char state_to_char[] = TASK_STATE_TO_CHAR_STR; | |
1990 | unsigned bit = state ? ffs(state) : 0; | |
1991 | ||
1992 | /* 'I' for idle */ | |
1993 | if (thread->tid == 0) | |
1994 | return 'I'; | |
1995 | ||
1996 | return bit < sizeof(state_to_char) - 1 ? state_to_char[bit] : '?'; | |
1997 | } | |
1998 | ||
fc1469f1 | 1999 | static void timehist_print_sample(struct perf_sched *sched, |
32dcd021 | 2000 | struct evsel *evsel, |
fc1469f1 | 2001 | struct perf_sample *sample, |
6c973c90 | 2002 | struct addr_location *al, |
853b7407 | 2003 | struct thread *thread, |
414e050c | 2004 | u64 t, int state) |
49394a2a DA |
2005 | { |
2006 | struct thread_runtime *tr = thread__priv(thread); | |
292c4a8f BG |
2007 | const char *next_comm = perf_evsel__strval(evsel, sample, "next_comm"); |
2008 | const u32 next_pid = perf_evsel__intval(evsel, sample, "next_pid"); | |
a407b067 | 2009 | u32 max_cpus = sched->max_cpu + 1; |
49394a2a | 2010 | char tstr[64]; |
292c4a8f | 2011 | char nstr[30]; |
941bdea7 | 2012 | u64 wait_time; |
49394a2a | 2013 | |
c30d630d DA |
2014 | if (cpu_list && !test_bit(sample->cpu, cpu_bitmap)) |
2015 | return; | |
2016 | ||
853b7407 | 2017 | timestamp__scnprintf_usec(t, tstr, sizeof(tstr)); |
49394a2a DA |
2018 | printf("%15s [%04d] ", tstr, sample->cpu); |
2019 | ||
a407b067 DA |
2020 | if (sched->show_cpu_visual) { |
2021 | u32 i; | |
2022 | char c; | |
2023 | ||
2024 | printf(" "); | |
2025 | for (i = 0; i < max_cpus; ++i) { | |
2026 | /* flag idle times with 'i'; others are sched events */ | |
2027 | if (i == sample->cpu) | |
2028 | c = (thread->tid == 0) ? 'i' : 's'; | |
2029 | else | |
2030 | c = ' '; | |
2031 | printf("%c", c); | |
2032 | } | |
2033 | printf(" "); | |
2034 | } | |
2035 | ||
49394a2a DA |
2036 | printf(" %-*s ", comm_width, timehist_get_commstr(thread)); |
2037 | ||
941bdea7 NK |
2038 | wait_time = tr->dt_sleep + tr->dt_iowait + tr->dt_preempt; |
2039 | print_sched_time(wait_time, 6); | |
2040 | ||
49394a2a DA |
2041 | print_sched_time(tr->dt_delay, 6); |
2042 | print_sched_time(tr->dt_run, 6); | |
fc1469f1 | 2043 | |
414e050c NK |
2044 | if (sched->show_state) |
2045 | printf(" %5c ", task_state_char(thread, state)); | |
2046 | ||
292c4a8f BG |
2047 | if (sched->show_next) { |
2048 | snprintf(nstr, sizeof(nstr), "next: %s[%d]", next_comm, next_pid); | |
2049 | printf(" %-*s", comm_width, nstr); | |
2050 | } | |
2051 | ||
2052 | if (sched->show_wakeups && !sched->show_next) | |
fc1469f1 DA |
2053 | printf(" %-*s", comm_width, ""); |
2054 | ||
6c973c90 DA |
2055 | if (thread->tid == 0) |
2056 | goto out; | |
2057 | ||
2058 | if (sched->show_callchain) | |
2059 | printf(" "); | |
2060 | ||
2061 | sample__fprintf_sym(sample, al, 0, | |
2062 | EVSEL__PRINT_SYM | EVSEL__PRINT_ONELINE | | |
2d9bbf6e NK |
2063 | EVSEL__PRINT_CALLCHAIN_ARROW | |
2064 | EVSEL__PRINT_SKIP_IGNORED, | |
9620bc36 | 2065 | &callchain_cursor, symbol_conf.bt_stop_list, stdout); |
6c973c90 DA |
2066 | |
2067 | out: | |
49394a2a DA |
2068 | printf("\n"); |
2069 | } | |
2070 | ||
2071 | /* | |
2072 | * Explanation of delta-time stats: | |
2073 | * | |
2074 | * t = time of current schedule out event | |
2075 | * tprev = time of previous sched out event | |
2076 | * also time of schedule-in event for current task | |
2077 | * last_time = time of last sched change event for current task | |
2078 | * (i.e, time process was last scheduled out) | |
2079 | * ready_to_run = time of wakeup for current task | |
2080 | * | |
2081 | * -----|------------|------------|------------|------ | |
2082 | * last ready tprev t | |
2083 | * time to run | |
2084 | * | |
2085 | * |-------- dt_wait --------| | |
2086 | * |- dt_delay -|-- dt_run --| | |
2087 | * | |
2088 | * dt_run = run time of current task | |
2089 | * dt_wait = time between last schedule out event for task and tprev | |
2090 | * represents time spent off the cpu | |
2091 | * dt_delay = time between wakeup and schedule-in of task | |
2092 | */ | |
2093 | ||
2094 | static void timehist_update_runtime_stats(struct thread_runtime *r, | |
2095 | u64 t, u64 tprev) | |
2096 | { | |
2097 | r->dt_delay = 0; | |
941bdea7 NK |
2098 | r->dt_sleep = 0; |
2099 | r->dt_iowait = 0; | |
2100 | r->dt_preempt = 0; | |
49394a2a | 2101 | r->dt_run = 0; |
941bdea7 | 2102 | |
49394a2a DA |
2103 | if (tprev) { |
2104 | r->dt_run = t - tprev; | |
2105 | if (r->ready_to_run) { | |
2106 | if (r->ready_to_run > tprev) | |
2107 | pr_debug("time travel: wakeup time for task > previous sched_switch event\n"); | |
2108 | else | |
2109 | r->dt_delay = tprev - r->ready_to_run; | |
2110 | } | |
2111 | ||
2112 | if (r->last_time > tprev) | |
2113 | pr_debug("time travel: last sched out time for task > previous sched_switch event\n"); | |
941bdea7 NK |
2114 | else if (r->last_time) { |
2115 | u64 dt_wait = tprev - r->last_time; | |
2116 | ||
2117 | if (r->last_state == TASK_RUNNING) | |
2118 | r->dt_preempt = dt_wait; | |
2119 | else if (r->last_state == TASK_UNINTERRUPTIBLE) | |
2120 | r->dt_iowait = dt_wait; | |
2121 | else | |
2122 | r->dt_sleep = dt_wait; | |
2123 | } | |
49394a2a DA |
2124 | } |
2125 | ||
2126 | update_stats(&r->run_stats, r->dt_run); | |
587782c5 NK |
2127 | |
2128 | r->total_run_time += r->dt_run; | |
2129 | r->total_delay_time += r->dt_delay; | |
2130 | r->total_sleep_time += r->dt_sleep; | |
2131 | r->total_iowait_time += r->dt_iowait; | |
2132 | r->total_preempt_time += r->dt_preempt; | |
49394a2a DA |
2133 | } |
2134 | ||
96039c7c | 2135 | static bool is_idle_sample(struct perf_sample *sample, |
32dcd021 | 2136 | struct evsel *evsel) |
49394a2a DA |
2137 | { |
2138 | /* pid 0 == swapper == idle task */ | |
96039c7c NK |
2139 | if (strcmp(perf_evsel__name(evsel), "sched:sched_switch") == 0) |
2140 | return perf_evsel__intval(evsel, sample, "prev_pid") == 0; | |
49394a2a | 2141 | |
96039c7c NK |
2142 | return sample->pid == 0; |
2143 | } | |
2144 | ||
2145 | static void save_task_callchain(struct perf_sched *sched, | |
2146 | struct perf_sample *sample, | |
32dcd021 | 2147 | struct evsel *evsel, |
96039c7c NK |
2148 | struct machine *machine) |
2149 | { | |
2150 | struct callchain_cursor *cursor = &callchain_cursor; | |
2151 | struct thread *thread; | |
6c973c90 DA |
2152 | |
2153 | /* want main thread for process - has maps */ | |
2154 | thread = machine__findnew_thread(machine, sample->pid, sample->pid); | |
2155 | if (thread == NULL) { | |
2156 | pr_debug("Failed to get thread for pid %d.\n", sample->pid); | |
96039c7c | 2157 | return; |
6c973c90 DA |
2158 | } |
2159 | ||
4c50563d | 2160 | if (!sched->show_callchain || sample->callchain == NULL) |
96039c7c | 2161 | return; |
6c973c90 DA |
2162 | |
2163 | if (thread__resolve_callchain(thread, cursor, evsel, sample, | |
8388deb3 | 2164 | NULL, NULL, sched->max_stack + 2) != 0) { |
bb963e16 | 2165 | if (verbose > 0) |
62d94b00 | 2166 | pr_err("Failed to resolve callchain. Skipping\n"); |
6c973c90 | 2167 | |
96039c7c | 2168 | return; |
6c973c90 | 2169 | } |
cdeb01bf | 2170 | |
6c973c90 | 2171 | callchain_cursor_commit(cursor); |
cdeb01bf NK |
2172 | |
2173 | while (true) { | |
2174 | struct callchain_cursor_node *node; | |
2175 | struct symbol *sym; | |
2176 | ||
2177 | node = callchain_cursor_current(cursor); | |
2178 | if (node == NULL) | |
2179 | break; | |
2180 | ||
5f0fef8a | 2181 | sym = node->ms.sym; |
a7c3899c | 2182 | if (sym) { |
cdeb01bf NK |
2183 | if (!strcmp(sym->name, "schedule") || |
2184 | !strcmp(sym->name, "__schedule") || | |
2185 | !strcmp(sym->name, "preempt_schedule")) | |
2186 | sym->ignore = 1; | |
2187 | } | |
2188 | ||
2189 | callchain_cursor_advance(cursor); | |
2190 | } | |
49394a2a DA |
2191 | } |
2192 | ||
3bc2fa9c NK |
2193 | static int init_idle_thread(struct thread *thread) |
2194 | { | |
2195 | struct idle_thread_runtime *itr; | |
2196 | ||
2197 | thread__set_comm(thread, idle_comm, 0); | |
2198 | ||
2199 | itr = zalloc(sizeof(*itr)); | |
2200 | if (itr == NULL) | |
2201 | return -ENOMEM; | |
2202 | ||
2203 | init_stats(&itr->tr.run_stats); | |
2204 | callchain_init(&itr->callchain); | |
2205 | callchain_cursor_reset(&itr->cursor); | |
2206 | thread__set_priv(thread, itr); | |
2207 | ||
2208 | return 0; | |
2209 | } | |
2210 | ||
49394a2a DA |
2211 | /* |
2212 | * Track idle stats per cpu by maintaining a local thread | |
2213 | * struct for the idle task on each cpu. | |
2214 | */ | |
2215 | static int init_idle_threads(int ncpu) | |
2216 | { | |
3bc2fa9c | 2217 | int i, ret; |
49394a2a DA |
2218 | |
2219 | idle_threads = zalloc(ncpu * sizeof(struct thread *)); | |
2220 | if (!idle_threads) | |
2221 | return -ENOMEM; | |
2222 | ||
b336352b | 2223 | idle_max_cpu = ncpu; |
49394a2a DA |
2224 | |
2225 | /* allocate the actual thread struct if needed */ | |
2226 | for (i = 0; i < ncpu; ++i) { | |
2227 | idle_threads[i] = thread__new(0, 0); | |
2228 | if (idle_threads[i] == NULL) | |
2229 | return -ENOMEM; | |
2230 | ||
3bc2fa9c NK |
2231 | ret = init_idle_thread(idle_threads[i]); |
2232 | if (ret < 0) | |
2233 | return ret; | |
49394a2a DA |
2234 | } |
2235 | ||
2236 | return 0; | |
2237 | } | |
2238 | ||
2239 | static void free_idle_threads(void) | |
2240 | { | |
2241 | int i; | |
2242 | ||
2243 | if (idle_threads == NULL) | |
2244 | return; | |
2245 | ||
b336352b | 2246 | for (i = 0; i < idle_max_cpu; ++i) { |
49394a2a DA |
2247 | if ((idle_threads[i])) |
2248 | thread__delete(idle_threads[i]); | |
2249 | } | |
2250 | ||
2251 | free(idle_threads); | |
2252 | } | |
2253 | ||
2254 | static struct thread *get_idle_thread(int cpu) | |
2255 | { | |
2256 | /* | |
2257 | * expand/allocate array of pointers to local thread | |
2258 | * structs if needed | |
2259 | */ | |
2260 | if ((cpu >= idle_max_cpu) || (idle_threads == NULL)) { | |
2261 | int i, j = __roundup_pow_of_two(cpu+1); | |
2262 | void *p; | |
2263 | ||
2264 | p = realloc(idle_threads, j * sizeof(struct thread *)); | |
2265 | if (!p) | |
2266 | return NULL; | |
2267 | ||
2268 | idle_threads = (struct thread **) p; | |
b336352b | 2269 | for (i = idle_max_cpu; i < j; ++i) |
49394a2a DA |
2270 | idle_threads[i] = NULL; |
2271 | ||
2272 | idle_max_cpu = j; | |
2273 | } | |
2274 | ||
2275 | /* allocate a new thread struct if needed */ | |
2276 | if (idle_threads[cpu] == NULL) { | |
2277 | idle_threads[cpu] = thread__new(0, 0); | |
2278 | ||
2279 | if (idle_threads[cpu]) { | |
3bc2fa9c NK |
2280 | if (init_idle_thread(idle_threads[cpu]) < 0) |
2281 | return NULL; | |
49394a2a DA |
2282 | } |
2283 | } | |
2284 | ||
2285 | return idle_threads[cpu]; | |
2286 | } | |
2287 | ||
4c50563d ACM |
2288 | static void save_idle_callchain(struct perf_sched *sched, |
2289 | struct idle_thread_runtime *itr, | |
699b5b92 NK |
2290 | struct perf_sample *sample) |
2291 | { | |
4c50563d | 2292 | if (!sched->show_callchain || sample->callchain == NULL) |
699b5b92 NK |
2293 | return; |
2294 | ||
2295 | callchain_cursor__copy(&itr->cursor, &callchain_cursor); | |
2296 | } | |
2297 | ||
6c973c90 DA |
2298 | static struct thread *timehist_get_thread(struct perf_sched *sched, |
2299 | struct perf_sample *sample, | |
49394a2a | 2300 | struct machine *machine, |
32dcd021 | 2301 | struct evsel *evsel) |
49394a2a DA |
2302 | { |
2303 | struct thread *thread; | |
2304 | ||
96039c7c | 2305 | if (is_idle_sample(sample, evsel)) { |
49394a2a DA |
2306 | thread = get_idle_thread(sample->cpu); |
2307 | if (thread == NULL) | |
2308 | pr_err("Failed to get idle thread for cpu %d.\n", sample->cpu); | |
2309 | ||
2310 | } else { | |
5d92d96a NK |
2311 | /* there were samples with tid 0 but non-zero pid */ |
2312 | thread = machine__findnew_thread(machine, sample->pid, | |
2313 | sample->tid ?: sample->pid); | |
49394a2a DA |
2314 | if (thread == NULL) { |
2315 | pr_debug("Failed to get thread for tid %d. skipping sample.\n", | |
2316 | sample->tid); | |
2317 | } | |
96039c7c NK |
2318 | |
2319 | save_task_callchain(sched, sample, evsel, machine); | |
699b5b92 NK |
2320 | if (sched->idle_hist) { |
2321 | struct thread *idle; | |
2322 | struct idle_thread_runtime *itr; | |
2323 | ||
2324 | idle = get_idle_thread(sample->cpu); | |
2325 | if (idle == NULL) { | |
2326 | pr_err("Failed to get idle thread for cpu %d.\n", sample->cpu); | |
2327 | return NULL; | |
2328 | } | |
2329 | ||
2330 | itr = thread__priv(idle); | |
2331 | if (itr == NULL) | |
2332 | return NULL; | |
2333 | ||
2334 | itr->last_thread = thread; | |
2335 | ||
2336 | /* copy task callchain when entering to idle */ | |
2337 | if (perf_evsel__intval(evsel, sample, "next_pid") == 0) | |
4c50563d | 2338 | save_idle_callchain(sched, itr, sample); |
699b5b92 | 2339 | } |
49394a2a DA |
2340 | } |
2341 | ||
2342 | return thread; | |
2343 | } | |
2344 | ||
52df138c | 2345 | static bool timehist_skip_sample(struct perf_sched *sched, |
a4b2b6f5 | 2346 | struct thread *thread, |
32dcd021 | 2347 | struct evsel *evsel, |
a4b2b6f5 | 2348 | struct perf_sample *sample) |
49394a2a DA |
2349 | { |
2350 | bool rc = false; | |
2351 | ||
52df138c | 2352 | if (thread__is_filtered(thread)) { |
49394a2a | 2353 | rc = true; |
52df138c DA |
2354 | sched->skipped_samples++; |
2355 | } | |
49394a2a | 2356 | |
a4b2b6f5 NK |
2357 | if (sched->idle_hist) { |
2358 | if (strcmp(perf_evsel__name(evsel), "sched:sched_switch")) | |
2359 | rc = true; | |
2360 | else if (perf_evsel__intval(evsel, sample, "prev_pid") != 0 && | |
2361 | perf_evsel__intval(evsel, sample, "next_pid") != 0) | |
2362 | rc = true; | |
2363 | } | |
2364 | ||
49394a2a DA |
2365 | return rc; |
2366 | } | |
2367 | ||
fc1469f1 | 2368 | static void timehist_print_wakeup_event(struct perf_sched *sched, |
32dcd021 | 2369 | struct evsel *evsel, |
fc1469f1 DA |
2370 | struct perf_sample *sample, |
2371 | struct machine *machine, | |
2372 | struct thread *awakened) | |
2373 | { | |
2374 | struct thread *thread; | |
2375 | char tstr[64]; | |
2376 | ||
2377 | thread = machine__findnew_thread(machine, sample->pid, sample->tid); | |
2378 | if (thread == NULL) | |
2379 | return; | |
2380 | ||
2381 | /* show wakeup unless both awakee and awaker are filtered */ | |
a4b2b6f5 NK |
2382 | if (timehist_skip_sample(sched, thread, evsel, sample) && |
2383 | timehist_skip_sample(sched, awakened, evsel, sample)) { | |
fc1469f1 DA |
2384 | return; |
2385 | } | |
2386 | ||
2387 | timestamp__scnprintf_usec(sample->time, tstr, sizeof(tstr)); | |
2388 | printf("%15s [%04d] ", tstr, sample->cpu); | |
a407b067 DA |
2389 | if (sched->show_cpu_visual) |
2390 | printf(" %*s ", sched->max_cpu + 1, ""); | |
fc1469f1 DA |
2391 | |
2392 | printf(" %-*s ", comm_width, timehist_get_commstr(thread)); | |
2393 | ||
2394 | /* dt spacer */ | |
2395 | printf(" %9s %9s %9s ", "", "", ""); | |
2396 | ||
2397 | printf("awakened: %s", timehist_get_commstr(awakened)); | |
2398 | ||
2399 | printf("\n"); | |
2400 | } | |
2401 | ||
2402 | static int timehist_sched_wakeup_event(struct perf_tool *tool, | |
49394a2a | 2403 | union perf_event *event __maybe_unused, |
32dcd021 | 2404 | struct evsel *evsel, |
49394a2a DA |
2405 | struct perf_sample *sample, |
2406 | struct machine *machine) | |
2407 | { | |
fc1469f1 | 2408 | struct perf_sched *sched = container_of(tool, struct perf_sched, tool); |
49394a2a DA |
2409 | struct thread *thread; |
2410 | struct thread_runtime *tr = NULL; | |
2411 | /* want pid of awakened task not pid in sample */ | |
2412 | const u32 pid = perf_evsel__intval(evsel, sample, "pid"); | |
2413 | ||
2414 | thread = machine__findnew_thread(machine, 0, pid); | |
2415 | if (thread == NULL) | |
2416 | return -1; | |
2417 | ||
2418 | tr = thread__get_runtime(thread); | |
2419 | if (tr == NULL) | |
2420 | return -1; | |
2421 | ||
2422 | if (tr->ready_to_run == 0) | |
2423 | tr->ready_to_run = sample->time; | |
2424 | ||
fc1469f1 | 2425 | /* show wakeups if requested */ |
853b7407 DA |
2426 | if (sched->show_wakeups && |
2427 | !perf_time__skip_sample(&sched->ptime, sample->time)) | |
a4b2b6f5 | 2428 | timehist_print_wakeup_event(sched, evsel, sample, machine, thread); |
fc1469f1 | 2429 | |
49394a2a DA |
2430 | return 0; |
2431 | } | |
2432 | ||
350f54fa | 2433 | static void timehist_print_migration_event(struct perf_sched *sched, |
32dcd021 | 2434 | struct evsel *evsel, |
350f54fa DA |
2435 | struct perf_sample *sample, |
2436 | struct machine *machine, | |
2437 | struct thread *migrated) | |
2438 | { | |
2439 | struct thread *thread; | |
2440 | char tstr[64]; | |
2441 | u32 max_cpus = sched->max_cpu + 1; | |
2442 | u32 ocpu, dcpu; | |
2443 | ||
2444 | if (sched->summary_only) | |
2445 | return; | |
2446 | ||
2447 | max_cpus = sched->max_cpu + 1; | |
2448 | ocpu = perf_evsel__intval(evsel, sample, "orig_cpu"); | |
2449 | dcpu = perf_evsel__intval(evsel, sample, "dest_cpu"); | |
2450 | ||
2451 | thread = machine__findnew_thread(machine, sample->pid, sample->tid); | |
2452 | if (thread == NULL) | |
2453 | return; | |
2454 | ||
a4b2b6f5 NK |
2455 | if (timehist_skip_sample(sched, thread, evsel, sample) && |
2456 | timehist_skip_sample(sched, migrated, evsel, sample)) { | |
350f54fa DA |
2457 | return; |
2458 | } | |
2459 | ||
2460 | timestamp__scnprintf_usec(sample->time, tstr, sizeof(tstr)); | |
2461 | printf("%15s [%04d] ", tstr, sample->cpu); | |
2462 | ||
2463 | if (sched->show_cpu_visual) { | |
2464 | u32 i; | |
2465 | char c; | |
2466 | ||
2467 | printf(" "); | |
2468 | for (i = 0; i < max_cpus; ++i) { | |
2469 | c = (i == sample->cpu) ? 'm' : ' '; | |
2470 | printf("%c", c); | |
2471 | } | |
2472 | printf(" "); | |
2473 | } | |
2474 | ||
2475 | printf(" %-*s ", comm_width, timehist_get_commstr(thread)); | |
2476 | ||
2477 | /* dt spacer */ | |
2478 | printf(" %9s %9s %9s ", "", "", ""); | |
2479 | ||
2480 | printf("migrated: %s", timehist_get_commstr(migrated)); | |
2481 | printf(" cpu %d => %d", ocpu, dcpu); | |
2482 | ||
2483 | printf("\n"); | |
2484 | } | |
2485 | ||
2486 | static int timehist_migrate_task_event(struct perf_tool *tool, | |
2487 | union perf_event *event __maybe_unused, | |
32dcd021 | 2488 | struct evsel *evsel, |
350f54fa DA |
2489 | struct perf_sample *sample, |
2490 | struct machine *machine) | |
2491 | { | |
2492 | struct perf_sched *sched = container_of(tool, struct perf_sched, tool); | |
2493 | struct thread *thread; | |
2494 | struct thread_runtime *tr = NULL; | |
2495 | /* want pid of migrated task not pid in sample */ | |
2496 | const u32 pid = perf_evsel__intval(evsel, sample, "pid"); | |
2497 | ||
2498 | thread = machine__findnew_thread(machine, 0, pid); | |
2499 | if (thread == NULL) | |
2500 | return -1; | |
2501 | ||
2502 | tr = thread__get_runtime(thread); | |
2503 | if (tr == NULL) | |
2504 | return -1; | |
2505 | ||
2506 | tr->migrations++; | |
2507 | ||
2508 | /* show migrations if requested */ | |
2509 | timehist_print_migration_event(sched, evsel, sample, machine, thread); | |
2510 | ||
2511 | return 0; | |
2512 | } | |
2513 | ||
52df138c | 2514 | static int timehist_sched_change_event(struct perf_tool *tool, |
49394a2a | 2515 | union perf_event *event, |
32dcd021 | 2516 | struct evsel *evsel, |
49394a2a DA |
2517 | struct perf_sample *sample, |
2518 | struct machine *machine) | |
2519 | { | |
fc1469f1 | 2520 | struct perf_sched *sched = container_of(tool, struct perf_sched, tool); |
853b7407 | 2521 | struct perf_time_interval *ptime = &sched->ptime; |
49394a2a DA |
2522 | struct addr_location al; |
2523 | struct thread *thread; | |
2524 | struct thread_runtime *tr = NULL; | |
853b7407 | 2525 | u64 tprev, t = sample->time; |
49394a2a | 2526 | int rc = 0; |
414e050c NK |
2527 | int state = perf_evsel__intval(evsel, sample, "prev_state"); |
2528 | ||
49394a2a DA |
2529 | |
2530 | if (machine__resolve(machine, &al, sample) < 0) { | |
2531 | pr_err("problem processing %d event. skipping it\n", | |
2532 | event->header.type); | |
2533 | rc = -1; | |
2534 | goto out; | |
2535 | } | |
2536 | ||
6c973c90 | 2537 | thread = timehist_get_thread(sched, sample, machine, evsel); |
49394a2a DA |
2538 | if (thread == NULL) { |
2539 | rc = -1; | |
2540 | goto out; | |
2541 | } | |
2542 | ||
a4b2b6f5 | 2543 | if (timehist_skip_sample(sched, thread, evsel, sample)) |
49394a2a DA |
2544 | goto out; |
2545 | ||
2546 | tr = thread__get_runtime(thread); | |
2547 | if (tr == NULL) { | |
2548 | rc = -1; | |
2549 | goto out; | |
2550 | } | |
2551 | ||
2552 | tprev = perf_evsel__get_time(evsel, sample->cpu); | |
2553 | ||
853b7407 DA |
2554 | /* |
2555 | * If start time given: | |
2556 | * - sample time is under window user cares about - skip sample | |
2557 | * - tprev is under window user cares about - reset to start of window | |
2558 | */ | |
2559 | if (ptime->start && ptime->start > t) | |
2560 | goto out; | |
2561 | ||
bdd75729 | 2562 | if (tprev && ptime->start > tprev) |
853b7407 DA |
2563 | tprev = ptime->start; |
2564 | ||
2565 | /* | |
2566 | * If end time given: | |
2567 | * - previous sched event is out of window - we are done | |
2568 | * - sample time is beyond window user cares about - reset it | |
2569 | * to close out stats for time window interest | |
2570 | */ | |
2571 | if (ptime->end) { | |
2572 | if (tprev > ptime->end) | |
2573 | goto out; | |
2574 | ||
2575 | if (t > ptime->end) | |
2576 | t = ptime->end; | |
2577 | } | |
2578 | ||
07235f84 NK |
2579 | if (!sched->idle_hist || thread->tid == 0) { |
2580 | timehist_update_runtime_stats(tr, t, tprev); | |
2581 | ||
2582 | if (sched->idle_hist) { | |
2583 | struct idle_thread_runtime *itr = (void *)tr; | |
2584 | struct thread_runtime *last_tr; | |
2585 | ||
2586 | BUG_ON(thread->tid != 0); | |
2587 | ||
2588 | if (itr->last_thread == NULL) | |
2589 | goto out; | |
2590 | ||
2591 | /* add current idle time as last thread's runtime */ | |
2592 | last_tr = thread__get_runtime(itr->last_thread); | |
2593 | if (last_tr == NULL) | |
2594 | goto out; | |
2595 | ||
2596 | timehist_update_runtime_stats(last_tr, t, tprev); | |
2597 | /* | |
2598 | * remove delta time of last thread as it's not updated | |
2599 | * and otherwise it will show an invalid value next | |
2600 | * time. we only care total run time and run stat. | |
2601 | */ | |
2602 | last_tr->dt_run = 0; | |
07235f84 | 2603 | last_tr->dt_delay = 0; |
941bdea7 NK |
2604 | last_tr->dt_sleep = 0; |
2605 | last_tr->dt_iowait = 0; | |
2606 | last_tr->dt_preempt = 0; | |
07235f84 | 2607 | |
ba957ebb NK |
2608 | if (itr->cursor.nr) |
2609 | callchain_append(&itr->callchain, &itr->cursor, t - tprev); | |
2610 | ||
07235f84 NK |
2611 | itr->last_thread = NULL; |
2612 | } | |
2613 | } | |
853b7407 | 2614 | |
52df138c | 2615 | if (!sched->summary_only) |
292c4a8f | 2616 | timehist_print_sample(sched, evsel, sample, &al, thread, t, state); |
49394a2a DA |
2617 | |
2618 | out: | |
9396c9cb NK |
2619 | if (sched->hist_time.start == 0 && t >= ptime->start) |
2620 | sched->hist_time.start = t; | |
2621 | if (ptime->end == 0 || t <= ptime->end) | |
2622 | sched->hist_time.end = t; | |
2623 | ||
49394a2a DA |
2624 | if (tr) { |
2625 | /* time of this sched_switch event becomes last time task seen */ | |
2626 | tr->last_time = sample->time; | |
2627 | ||
941bdea7 | 2628 | /* last state is used to determine where to account wait time */ |
414e050c | 2629 | tr->last_state = state; |
941bdea7 | 2630 | |
49394a2a DA |
2631 | /* sched out event for task so reset ready to run time */ |
2632 | tr->ready_to_run = 0; | |
2633 | } | |
2634 | ||
2635 | perf_evsel__save_time(evsel, sample->time, sample->cpu); | |
2636 | ||
2637 | return rc; | |
2638 | } | |
2639 | ||
2640 | static int timehist_sched_switch_event(struct perf_tool *tool, | |
2641 | union perf_event *event, | |
32dcd021 | 2642 | struct evsel *evsel, |
49394a2a DA |
2643 | struct perf_sample *sample, |
2644 | struct machine *machine __maybe_unused) | |
2645 | { | |
2646 | return timehist_sched_change_event(tool, event, evsel, sample, machine); | |
2647 | } | |
2648 | ||
2649 | static int process_lost(struct perf_tool *tool __maybe_unused, | |
2650 | union perf_event *event, | |
2651 | struct perf_sample *sample, | |
2652 | struct machine *machine __maybe_unused) | |
2653 | { | |
2654 | char tstr[64]; | |
2655 | ||
2656 | timestamp__scnprintf_usec(sample->time, tstr, sizeof(tstr)); | |
2657 | printf("%15s ", tstr); | |
5290ed69 | 2658 | printf("lost %" PRI_lu64 " events on cpu %d\n", event->lost.lost, sample->cpu); |
49394a2a DA |
2659 | |
2660 | return 0; | |
2661 | } | |
2662 | ||
2663 | ||
52df138c DA |
2664 | static void print_thread_runtime(struct thread *t, |
2665 | struct thread_runtime *r) | |
2666 | { | |
2667 | double mean = avg_stats(&r->run_stats); | |
2668 | float stddev; | |
2669 | ||
2670 | printf("%*s %5d %9" PRIu64 " ", | |
2671 | comm_width, timehist_get_commstr(t), t->ppid, | |
2672 | (u64) r->run_stats.n); | |
2673 | ||
2674 | print_sched_time(r->total_run_time, 8); | |
2675 | stddev = rel_stddev_stats(stddev_stats(&r->run_stats), mean); | |
2676 | print_sched_time(r->run_stats.min, 6); | |
2677 | printf(" "); | |
2678 | print_sched_time((u64) mean, 6); | |
2679 | printf(" "); | |
2680 | print_sched_time(r->run_stats.max, 6); | |
2681 | printf(" "); | |
2682 | printf("%5.2f", stddev); | |
350f54fa | 2683 | printf(" %5" PRIu64, r->migrations); |
52df138c DA |
2684 | printf("\n"); |
2685 | } | |
2686 | ||
587782c5 NK |
2687 | static void print_thread_waittime(struct thread *t, |
2688 | struct thread_runtime *r) | |
2689 | { | |
2690 | printf("%*s %5d %9" PRIu64 " ", | |
2691 | comm_width, timehist_get_commstr(t), t->ppid, | |
2692 | (u64) r->run_stats.n); | |
2693 | ||
2694 | print_sched_time(r->total_run_time, 8); | |
2695 | print_sched_time(r->total_sleep_time, 6); | |
2696 | printf(" "); | |
2697 | print_sched_time(r->total_iowait_time, 6); | |
2698 | printf(" "); | |
2699 | print_sched_time(r->total_preempt_time, 6); | |
2700 | printf(" "); | |
2701 | print_sched_time(r->total_delay_time, 6); | |
2702 | printf("\n"); | |
2703 | } | |
2704 | ||
52df138c | 2705 | struct total_run_stats { |
587782c5 | 2706 | struct perf_sched *sched; |
52df138c DA |
2707 | u64 sched_count; |
2708 | u64 task_count; | |
2709 | u64 total_run_time; | |
2710 | }; | |
2711 | ||
2712 | static int __show_thread_runtime(struct thread *t, void *priv) | |
2713 | { | |
2714 | struct total_run_stats *stats = priv; | |
2715 | struct thread_runtime *r; | |
2716 | ||
2717 | if (thread__is_filtered(t)) | |
2718 | return 0; | |
2719 | ||
2720 | r = thread__priv(t); | |
2721 | if (r && r->run_stats.n) { | |
2722 | stats->task_count++; | |
2723 | stats->sched_count += r->run_stats.n; | |
2724 | stats->total_run_time += r->total_run_time; | |
587782c5 NK |
2725 | |
2726 | if (stats->sched->show_state) | |
2727 | print_thread_waittime(t, r); | |
2728 | else | |
2729 | print_thread_runtime(t, r); | |
52df138c DA |
2730 | } |
2731 | ||
2732 | return 0; | |
2733 | } | |
2734 | ||
2735 | static int show_thread_runtime(struct thread *t, void *priv) | |
2736 | { | |
2737 | if (t->dead) | |
2738 | return 0; | |
2739 | ||
2740 | return __show_thread_runtime(t, priv); | |
2741 | } | |
2742 | ||
2743 | static int show_deadthread_runtime(struct thread *t, void *priv) | |
2744 | { | |
2745 | if (!t->dead) | |
2746 | return 0; | |
2747 | ||
2748 | return __show_thread_runtime(t, priv); | |
2749 | } | |
2750 | ||
ba957ebb NK |
2751 | static size_t callchain__fprintf_folded(FILE *fp, struct callchain_node *node) |
2752 | { | |
2753 | const char *sep = " <- "; | |
2754 | struct callchain_list *chain; | |
2755 | size_t ret = 0; | |
2756 | char bf[1024]; | |
2757 | bool first; | |
2758 | ||
2759 | if (node == NULL) | |
2760 | return 0; | |
2761 | ||
2762 | ret = callchain__fprintf_folded(fp, node->parent); | |
2763 | first = (ret == 0); | |
2764 | ||
2765 | list_for_each_entry(chain, &node->val, list) { | |
2766 | if (chain->ip >= PERF_CONTEXT_MAX) | |
2767 | continue; | |
2768 | if (chain->ms.sym && chain->ms.sym->ignore) | |
2769 | continue; | |
2770 | ret += fprintf(fp, "%s%s", first ? "" : sep, | |
2771 | callchain_list__sym_name(chain, bf, sizeof(bf), | |
2772 | false)); | |
2773 | first = false; | |
2774 | } | |
2775 | ||
2776 | return ret; | |
2777 | } | |
2778 | ||
cb4c13a5 | 2779 | static size_t timehist_print_idlehist_callchain(struct rb_root_cached *root) |
ba957ebb NK |
2780 | { |
2781 | size_t ret = 0; | |
2782 | FILE *fp = stdout; | |
2783 | struct callchain_node *chain; | |
cb4c13a5 | 2784 | struct rb_node *rb_node = rb_first_cached(root); |
ba957ebb NK |
2785 | |
2786 | printf(" %16s %8s %s\n", "Idle time (msec)", "Count", "Callchains"); | |
2787 | printf(" %.16s %.8s %.50s\n", graph_dotted_line, graph_dotted_line, | |
2788 | graph_dotted_line); | |
2789 | ||
2790 | while (rb_node) { | |
2791 | chain = rb_entry(rb_node, struct callchain_node, rb_node); | |
2792 | rb_node = rb_next(rb_node); | |
2793 | ||
2794 | ret += fprintf(fp, " "); | |
2795 | print_sched_time(chain->hit, 12); | |
2796 | ret += 16; /* print_sched_time returns 2nd arg + 4 */ | |
2797 | ret += fprintf(fp, " %8d ", chain->count); | |
2798 | ret += callchain__fprintf_folded(fp, chain); | |
2799 | ret += fprintf(fp, "\n"); | |
2800 | } | |
2801 | ||
2802 | return ret; | |
2803 | } | |
2804 | ||
52df138c DA |
2805 | static void timehist_print_summary(struct perf_sched *sched, |
2806 | struct perf_session *session) | |
2807 | { | |
2808 | struct machine *m = &session->machines.host; | |
2809 | struct total_run_stats totals; | |
2810 | u64 task_count; | |
2811 | struct thread *t; | |
2812 | struct thread_runtime *r; | |
2813 | int i; | |
9396c9cb | 2814 | u64 hist_time = sched->hist_time.end - sched->hist_time.start; |
52df138c DA |
2815 | |
2816 | memset(&totals, 0, sizeof(totals)); | |
587782c5 | 2817 | totals.sched = sched; |
52df138c | 2818 | |
07235f84 NK |
2819 | if (sched->idle_hist) { |
2820 | printf("\nIdle-time summary\n"); | |
2821 | printf("%*s parent sched-out ", comm_width, "comm"); | |
2822 | printf(" idle-time min-idle avg-idle max-idle stddev migrations\n"); | |
587782c5 NK |
2823 | } else if (sched->show_state) { |
2824 | printf("\nWait-time summary\n"); | |
2825 | printf("%*s parent sched-in ", comm_width, "comm"); | |
2826 | printf(" run-time sleep iowait preempt delay\n"); | |
07235f84 NK |
2827 | } else { |
2828 | printf("\nRuntime summary\n"); | |
2829 | printf("%*s parent sched-in ", comm_width, "comm"); | |
2830 | printf(" run-time min-run avg-run max-run stddev migrations\n"); | |
2831 | } | |
52df138c | 2832 | printf("%*s (count) ", comm_width, ""); |
587782c5 NK |
2833 | printf(" (msec) (msec) (msec) (msec) %s\n", |
2834 | sched->show_state ? "(msec)" : "%"); | |
350f54fa | 2835 | printf("%.117s\n", graph_dotted_line); |
52df138c DA |
2836 | |
2837 | machine__for_each_thread(m, show_thread_runtime, &totals); | |
2838 | task_count = totals.task_count; | |
2839 | if (!task_count) | |
2840 | printf("<no still running tasks>\n"); | |
2841 | ||
2842 | printf("\nTerminated tasks:\n"); | |
2843 | machine__for_each_thread(m, show_deadthread_runtime, &totals); | |
2844 | if (task_count == totals.task_count) | |
2845 | printf("<no terminated tasks>\n"); | |
2846 | ||
2847 | /* CPU idle stats not tracked when samples were skipped */ | |
07235f84 | 2848 | if (sched->skipped_samples && !sched->idle_hist) |
52df138c DA |
2849 | return; |
2850 | ||
2851 | printf("\nIdle stats:\n"); | |
b336352b | 2852 | for (i = 0; i < idle_max_cpu; ++i) { |
52df138c DA |
2853 | t = idle_threads[i]; |
2854 | if (!t) | |
2855 | continue; | |
2856 | ||
2857 | r = thread__priv(t); | |
2858 | if (r && r->run_stats.n) { | |
2859 | totals.sched_count += r->run_stats.n; | |
2860 | printf(" CPU %2d idle for ", i); | |
2861 | print_sched_time(r->total_run_time, 6); | |
9396c9cb | 2862 | printf(" msec (%6.2f%%)\n", 100.0 * r->total_run_time / hist_time); |
52df138c DA |
2863 | } else |
2864 | printf(" CPU %2d idle entire time window\n", i); | |
2865 | } | |
2866 | ||
4c50563d | 2867 | if (sched->idle_hist && sched->show_callchain) { |
ba957ebb NK |
2868 | callchain_param.mode = CHAIN_FOLDED; |
2869 | callchain_param.value = CCVAL_PERIOD; | |
2870 | ||
2871 | callchain_register_param(&callchain_param); | |
2872 | ||
2873 | printf("\nIdle stats by callchain:\n"); | |
2874 | for (i = 0; i < idle_max_cpu; ++i) { | |
2875 | struct idle_thread_runtime *itr; | |
2876 | ||
2877 | t = idle_threads[i]; | |
2878 | if (!t) | |
2879 | continue; | |
2880 | ||
2881 | itr = thread__priv(t); | |
2882 | if (itr == NULL) | |
2883 | continue; | |
2884 | ||
cb4c13a5 | 2885 | callchain_param.sort(&itr->sorted_root.rb_root, &itr->callchain, |
ba957ebb NK |
2886 | 0, &callchain_param); |
2887 | ||
2888 | printf(" CPU %2d:", i); | |
2889 | print_sched_time(itr->tr.total_run_time, 6); | |
2890 | printf(" msec\n"); | |
2891 | timehist_print_idlehist_callchain(&itr->sorted_root); | |
2892 | printf("\n"); | |
2893 | } | |
2894 | } | |
2895 | ||
52df138c DA |
2896 | printf("\n" |
2897 | " Total number of unique tasks: %" PRIu64 "\n" | |
9396c9cb | 2898 | "Total number of context switches: %" PRIu64 "\n", |
52df138c DA |
2899 | totals.task_count, totals.sched_count); |
2900 | ||
9396c9cb | 2901 | printf(" Total run time (msec): "); |
52df138c DA |
2902 | print_sched_time(totals.total_run_time, 2); |
2903 | printf("\n"); | |
9396c9cb NK |
2904 | |
2905 | printf(" Total scheduling time (msec): "); | |
2906 | print_sched_time(hist_time, 2); | |
2907 | printf(" (x %d)\n", sched->max_cpu); | |
52df138c DA |
2908 | } |
2909 | ||
49394a2a DA |
2910 | typedef int (*sched_handler)(struct perf_tool *tool, |
2911 | union perf_event *event, | |
32dcd021 | 2912 | struct evsel *evsel, |
49394a2a DA |
2913 | struct perf_sample *sample, |
2914 | struct machine *machine); | |
2915 | ||
2916 | static int perf_timehist__process_sample(struct perf_tool *tool, | |
2917 | union perf_event *event, | |
2918 | struct perf_sample *sample, | |
32dcd021 | 2919 | struct evsel *evsel, |
49394a2a DA |
2920 | struct machine *machine) |
2921 | { | |
2922 | struct perf_sched *sched = container_of(tool, struct perf_sched, tool); | |
2923 | int err = 0; | |
2924 | int this_cpu = sample->cpu; | |
2925 | ||
2926 | if (this_cpu > sched->max_cpu) | |
2927 | sched->max_cpu = this_cpu; | |
2928 | ||
2929 | if (evsel->handler != NULL) { | |
2930 | sched_handler f = evsel->handler; | |
2931 | ||
2932 | err = f(tool, event, evsel, sample, machine); | |
2933 | } | |
2934 | ||
2935 | return err; | |
2936 | } | |
2937 | ||
6c973c90 | 2938 | static int timehist_check_attr(struct perf_sched *sched, |
63503dba | 2939 | struct evlist *evlist) |
6c973c90 | 2940 | { |
32dcd021 | 2941 | struct evsel *evsel; |
6c973c90 DA |
2942 | struct evsel_runtime *er; |
2943 | ||
ce9036a6 | 2944 | list_for_each_entry(evsel, &evlist->core.entries, core.node) { |
6c973c90 DA |
2945 | er = perf_evsel__get_runtime(evsel); |
2946 | if (er == NULL) { | |
2947 | pr_err("Failed to allocate memory for evsel runtime data\n"); | |
2948 | return -1; | |
2949 | } | |
2950 | ||
27de9b2b | 2951 | if (sched->show_callchain && !evsel__has_callchain(evsel)) { |
6c973c90 DA |
2952 | pr_info("Samples do not have callchains.\n"); |
2953 | sched->show_callchain = 0; | |
2954 | symbol_conf.use_callchain = 0; | |
2955 | } | |
2956 | } | |
2957 | ||
2958 | return 0; | |
2959 | } | |
2960 | ||
49394a2a DA |
2961 | static int perf_sched__timehist(struct perf_sched *sched) |
2962 | { | |
32dcd021 | 2963 | const struct evsel_str_handler handlers[] = { |
49394a2a DA |
2964 | { "sched:sched_switch", timehist_sched_switch_event, }, |
2965 | { "sched:sched_wakeup", timehist_sched_wakeup_event, }, | |
2966 | { "sched:sched_wakeup_new", timehist_sched_wakeup_event, }, | |
2967 | }; | |
32dcd021 | 2968 | const struct evsel_str_handler migrate_handlers[] = { |
350f54fa DA |
2969 | { "sched:sched_migrate_task", timehist_migrate_task_event, }, |
2970 | }; | |
8ceb41d7 | 2971 | struct perf_data data = { |
2d4f2799 JO |
2972 | .path = input_name, |
2973 | .mode = PERF_DATA_MODE_READ, | |
2974 | .force = sched->force, | |
49394a2a DA |
2975 | }; |
2976 | ||
2977 | struct perf_session *session; | |
63503dba | 2978 | struct evlist *evlist; |
49394a2a DA |
2979 | int err = -1; |
2980 | ||
2981 | /* | |
2982 | * event handlers for timehist option | |
2983 | */ | |
2984 | sched->tool.sample = perf_timehist__process_sample; | |
2985 | sched->tool.mmap = perf_event__process_mmap; | |
2986 | sched->tool.comm = perf_event__process_comm; | |
2987 | sched->tool.exit = perf_event__process_exit; | |
2988 | sched->tool.fork = perf_event__process_fork; | |
2989 | sched->tool.lost = process_lost; | |
2990 | sched->tool.attr = perf_event__process_attr; | |
2991 | sched->tool.tracing_data = perf_event__process_tracing_data; | |
2992 | sched->tool.build_id = perf_event__process_build_id; | |
2993 | ||
2994 | sched->tool.ordered_events = true; | |
2995 | sched->tool.ordering_requires_timestamps = true; | |
2996 | ||
6c973c90 DA |
2997 | symbol_conf.use_callchain = sched->show_callchain; |
2998 | ||
8ceb41d7 | 2999 | session = perf_session__new(&data, false, &sched->tool); |
6ef81c55 MI |
3000 | if (IS_ERR(session)) |
3001 | return PTR_ERR(session); | |
49394a2a | 3002 | |
c30d630d DA |
3003 | if (cpu_list) { |
3004 | err = perf_session__cpu_bitmap(session, cpu_list, cpu_bitmap); | |
3005 | if (err < 0) | |
3006 | goto out; | |
3007 | } | |
3008 | ||
52df138c DA |
3009 | evlist = session->evlist; |
3010 | ||
49394a2a DA |
3011 | symbol__init(&session->header.env); |
3012 | ||
853b7407 DA |
3013 | if (perf_time__parse_str(&sched->ptime, sched->time_str) != 0) { |
3014 | pr_err("Invalid time string\n"); | |
3015 | return -EINVAL; | |
3016 | } | |
3017 | ||
6c973c90 DA |
3018 | if (timehist_check_attr(sched, evlist) != 0) |
3019 | goto out; | |
3020 | ||
49394a2a DA |
3021 | setup_pager(); |
3022 | ||
3023 | /* setup per-evsel handlers */ | |
3024 | if (perf_session__set_tracepoints_handlers(session, handlers)) | |
3025 | goto out; | |
3026 | ||
f45bf8d3 DA |
3027 | /* sched_switch event at a minimum needs to exist */ |
3028 | if (!perf_evlist__find_tracepoint_by_name(session->evlist, | |
3029 | "sched:sched_switch")) { | |
3030 | pr_err("No sched_switch events found. Have you run 'perf sched record'?\n"); | |
49394a2a | 3031 | goto out; |
f45bf8d3 | 3032 | } |
49394a2a | 3033 | |
350f54fa DA |
3034 | if (sched->show_migrations && |
3035 | perf_session__set_tracepoints_handlers(session, migrate_handlers)) | |
3036 | goto out; | |
3037 | ||
49394a2a DA |
3038 | /* pre-allocate struct for per-CPU idle stats */ |
3039 | sched->max_cpu = session->header.env.nr_cpus_online; | |
3040 | if (sched->max_cpu == 0) | |
3041 | sched->max_cpu = 4; | |
3042 | if (init_idle_threads(sched->max_cpu)) | |
3043 | goto out; | |
3044 | ||
52df138c DA |
3045 | /* summary_only implies summary option, but don't overwrite summary if set */ |
3046 | if (sched->summary_only) | |
3047 | sched->summary = sched->summary_only; | |
3048 | ||
3049 | if (!sched->summary_only) | |
a407b067 | 3050 | timehist_header(sched); |
49394a2a DA |
3051 | |
3052 | err = perf_session__process_events(session); | |
3053 | if (err) { | |
3054 | pr_err("Failed to process events, error %d", err); | |
3055 | goto out; | |
3056 | } | |
3057 | ||
52df138c DA |
3058 | sched->nr_events = evlist->stats.nr_events[0]; |
3059 | sched->nr_lost_events = evlist->stats.total_lost; | |
3060 | sched->nr_lost_chunks = evlist->stats.nr_events[PERF_RECORD_LOST]; | |
3061 | ||
3062 | if (sched->summary) | |
3063 | timehist_print_summary(sched, session); | |
3064 | ||
49394a2a DA |
3065 | out: |
3066 | free_idle_threads(); | |
3067 | perf_session__delete(session); | |
3068 | ||
3069 | return err; | |
3070 | } | |
3071 | ||
3072 | ||
0e9b07e5 | 3073 | static void print_bad_events(struct perf_sched *sched) |
0ec04e16 | 3074 | { |
0e9b07e5 | 3075 | if (sched->nr_unordered_timestamps && sched->nr_timestamps) { |
0ec04e16 | 3076 | printf(" INFO: %.3f%% unordered timestamps (%ld out of %ld)\n", |
0e9b07e5 ACM |
3077 | (double)sched->nr_unordered_timestamps/(double)sched->nr_timestamps*100.0, |
3078 | sched->nr_unordered_timestamps, sched->nr_timestamps); | |
0ec04e16 | 3079 | } |
0e9b07e5 | 3080 | if (sched->nr_lost_events && sched->nr_events) { |
0ec04e16 | 3081 | printf(" INFO: %.3f%% lost events (%ld out of %ld, in %ld chunks)\n", |
0e9b07e5 ACM |
3082 | (double)sched->nr_lost_events/(double)sched->nr_events * 100.0, |
3083 | sched->nr_lost_events, sched->nr_events, sched->nr_lost_chunks); | |
0ec04e16 | 3084 | } |
0e9b07e5 | 3085 | if (sched->nr_context_switch_bugs && sched->nr_timestamps) { |
0ec04e16 | 3086 | printf(" INFO: %.3f%% context switch bugs (%ld out of %ld)", |
0e9b07e5 ACM |
3087 | (double)sched->nr_context_switch_bugs/(double)sched->nr_timestamps*100.0, |
3088 | sched->nr_context_switch_bugs, sched->nr_timestamps); | |
3089 | if (sched->nr_lost_events) | |
0ec04e16 IM |
3090 | printf(" (due to lost events?)"); |
3091 | printf("\n"); | |
3092 | } | |
3093 | } | |
3094 | ||
cb4c13a5 | 3095 | static void __merge_work_atoms(struct rb_root_cached *root, struct work_atoms *data) |
2f80dd44 | 3096 | { |
cb4c13a5 | 3097 | struct rb_node **new = &(root->rb_root.rb_node), *parent = NULL; |
2f80dd44 JB |
3098 | struct work_atoms *this; |
3099 | const char *comm = thread__comm_str(data->thread), *this_comm; | |
cb4c13a5 | 3100 | bool leftmost = true; |
2f80dd44 JB |
3101 | |
3102 | while (*new) { | |
3103 | int cmp; | |
3104 | ||
3105 | this = container_of(*new, struct work_atoms, node); | |
3106 | parent = *new; | |
3107 | ||
3108 | this_comm = thread__comm_str(this->thread); | |
3109 | cmp = strcmp(comm, this_comm); | |
3110 | if (cmp > 0) { | |
3111 | new = &((*new)->rb_left); | |
3112 | } else if (cmp < 0) { | |
3113 | new = &((*new)->rb_right); | |
cb4c13a5 | 3114 | leftmost = false; |
2f80dd44 JB |
3115 | } else { |
3116 | this->num_merged++; | |
3117 | this->total_runtime += data->total_runtime; | |
3118 | this->nb_atoms += data->nb_atoms; | |
3119 | this->total_lat += data->total_lat; | |
3120 | list_splice(&data->work_list, &this->work_list); | |
3121 | if (this->max_lat < data->max_lat) { | |
3122 | this->max_lat = data->max_lat; | |
3123 | this->max_lat_at = data->max_lat_at; | |
3124 | } | |
3125 | zfree(&data); | |
3126 | return; | |
3127 | } | |
3128 | } | |
3129 | ||
3130 | data->num_merged++; | |
3131 | rb_link_node(&data->node, parent, new); | |
cb4c13a5 | 3132 | rb_insert_color_cached(&data->node, root, leftmost); |
2f80dd44 JB |
3133 | } |
3134 | ||
3135 | static void perf_sched__merge_lat(struct perf_sched *sched) | |
3136 | { | |
3137 | struct work_atoms *data; | |
3138 | struct rb_node *node; | |
3139 | ||
3140 | if (sched->skip_merge) | |
3141 | return; | |
3142 | ||
cb4c13a5 DB |
3143 | while ((node = rb_first_cached(&sched->atom_root))) { |
3144 | rb_erase_cached(node, &sched->atom_root); | |
2f80dd44 JB |
3145 | data = rb_entry(node, struct work_atoms, node); |
3146 | __merge_work_atoms(&sched->merged_atom_root, data); | |
3147 | } | |
3148 | } | |
3149 | ||
0e9b07e5 | 3150 | static int perf_sched__lat(struct perf_sched *sched) |
0ec04e16 IM |
3151 | { |
3152 | struct rb_node *next; | |
3153 | ||
3154 | setup_pager(); | |
ad9def7c | 3155 | |
ae536acf | 3156 | if (perf_sched__read_events(sched)) |
a116e05d | 3157 | return -1; |
ad9def7c | 3158 | |
2f80dd44 | 3159 | perf_sched__merge_lat(sched); |
0e9b07e5 | 3160 | perf_sched__sort_lat(sched); |
0ec04e16 | 3161 | |
80790e0b RR |
3162 | printf("\n -----------------------------------------------------------------------------------------------------------------\n"); |
3163 | printf(" Task | Runtime ms | Switches | Average delay ms | Maximum delay ms | Maximum delay at |\n"); | |
3164 | printf(" -----------------------------------------------------------------------------------------------------------------\n"); | |
0ec04e16 | 3165 | |
cb4c13a5 | 3166 | next = rb_first_cached(&sched->sorted_atom_root); |
0ec04e16 IM |
3167 | |
3168 | while (next) { | |
3169 | struct work_atoms *work_list; | |
3170 | ||
3171 | work_list = rb_entry(next, struct work_atoms, node); | |
0e9b07e5 | 3172 | output_lat_thread(sched, work_list); |
0ec04e16 | 3173 | next = rb_next(next); |
ae536acf | 3174 | thread__zput(work_list->thread); |
0ec04e16 IM |
3175 | } |
3176 | ||
80790e0b | 3177 | printf(" -----------------------------------------------------------------------------------------------------------------\n"); |
9486aa38 | 3178 | printf(" TOTAL: |%11.3f ms |%9" PRIu64 " |\n", |
4fc76e49 | 3179 | (double)sched->all_runtime / NSEC_PER_MSEC, sched->all_count); |
0ec04e16 IM |
3180 | |
3181 | printf(" ---------------------------------------------------\n"); | |
3182 | ||
0e9b07e5 | 3183 | print_bad_events(sched); |
0ec04e16 IM |
3184 | printf("\n"); |
3185 | ||
a116e05d | 3186 | return 0; |
0ec04e16 IM |
3187 | } |
3188 | ||
99623c62 JO |
3189 | static int setup_map_cpus(struct perf_sched *sched) |
3190 | { | |
f854839b | 3191 | struct perf_cpu_map *map; |
73643bb6 | 3192 | |
99623c62 JO |
3193 | sched->max_cpu = sysconf(_SC_NPROCESSORS_CONF); |
3194 | ||
3195 | if (sched->map.comp) { | |
3196 | sched->map.comp_cpus = zalloc(sched->max_cpu * sizeof(int)); | |
cf294f24 JO |
3197 | if (!sched->map.comp_cpus) |
3198 | return -1; | |
99623c62 JO |
3199 | } |
3200 | ||
73643bb6 JO |
3201 | if (!sched->map.cpus_str) |
3202 | return 0; | |
3203 | ||
9c3516d1 | 3204 | map = perf_cpu_map__new(sched->map.cpus_str); |
73643bb6 JO |
3205 | if (!map) { |
3206 | pr_err("failed to get cpus map from %s\n", sched->map.cpus_str); | |
3207 | return -1; | |
3208 | } | |
3209 | ||
3210 | sched->map.cpus = map; | |
99623c62 JO |
3211 | return 0; |
3212 | } | |
3213 | ||
a151a37a JO |
3214 | static int setup_color_pids(struct perf_sched *sched) |
3215 | { | |
9749b90e | 3216 | struct perf_thread_map *map; |
a151a37a JO |
3217 | |
3218 | if (!sched->map.color_pids_str) | |
3219 | return 0; | |
3220 | ||
3221 | map = thread_map__new_by_tid_str(sched->map.color_pids_str); | |
3222 | if (!map) { | |
3223 | pr_err("failed to get thread map from %s\n", sched->map.color_pids_str); | |
3224 | return -1; | |
3225 | } | |
3226 | ||
3227 | sched->map.color_pids = map; | |
3228 | return 0; | |
3229 | } | |
3230 | ||
cf294f24 JO |
3231 | static int setup_color_cpus(struct perf_sched *sched) |
3232 | { | |
f854839b | 3233 | struct perf_cpu_map *map; |
cf294f24 JO |
3234 | |
3235 | if (!sched->map.color_cpus_str) | |
3236 | return 0; | |
3237 | ||
9c3516d1 | 3238 | map = perf_cpu_map__new(sched->map.color_cpus_str); |
cf294f24 JO |
3239 | if (!map) { |
3240 | pr_err("failed to get thread map from %s\n", sched->map.color_cpus_str); | |
3241 | return -1; | |
3242 | } | |
3243 | ||
3244 | sched->map.color_cpus = map; | |
3245 | return 0; | |
3246 | } | |
3247 | ||
0e9b07e5 | 3248 | static int perf_sched__map(struct perf_sched *sched) |
0ec04e16 | 3249 | { |
99623c62 JO |
3250 | if (setup_map_cpus(sched)) |
3251 | return -1; | |
40749d0f | 3252 | |
a151a37a JO |
3253 | if (setup_color_pids(sched)) |
3254 | return -1; | |
3255 | ||
cf294f24 JO |
3256 | if (setup_color_cpus(sched)) |
3257 | return -1; | |
3258 | ||
0ec04e16 | 3259 | setup_pager(); |
ae536acf | 3260 | if (perf_sched__read_events(sched)) |
a116e05d | 3261 | return -1; |
0e9b07e5 | 3262 | print_bad_events(sched); |
a116e05d | 3263 | return 0; |
0ec04e16 IM |
3264 | } |
3265 | ||
0e9b07e5 | 3266 | static int perf_sched__replay(struct perf_sched *sched) |
0ec04e16 IM |
3267 | { |
3268 | unsigned long i; | |
3269 | ||
0e9b07e5 ACM |
3270 | calibrate_run_measurement_overhead(sched); |
3271 | calibrate_sleep_measurement_overhead(sched); | |
0ec04e16 | 3272 | |
0e9b07e5 | 3273 | test_calibrations(sched); |
0ec04e16 | 3274 | |
ae536acf | 3275 | if (perf_sched__read_events(sched)) |
a116e05d | 3276 | return -1; |
0ec04e16 | 3277 | |
0e9b07e5 ACM |
3278 | printf("nr_run_events: %ld\n", sched->nr_run_events); |
3279 | printf("nr_sleep_events: %ld\n", sched->nr_sleep_events); | |
3280 | printf("nr_wakeup_events: %ld\n", sched->nr_wakeup_events); | |
0ec04e16 | 3281 | |
0e9b07e5 ACM |
3282 | if (sched->targetless_wakeups) |
3283 | printf("target-less wakeups: %ld\n", sched->targetless_wakeups); | |
3284 | if (sched->multitarget_wakeups) | |
3285 | printf("multi-target wakeups: %ld\n", sched->multitarget_wakeups); | |
3286 | if (sched->nr_run_events_optimized) | |
0ec04e16 | 3287 | printf("run atoms optimized: %ld\n", |
0e9b07e5 | 3288 | sched->nr_run_events_optimized); |
0ec04e16 | 3289 | |
0e9b07e5 ACM |
3290 | print_task_traces(sched); |
3291 | add_cross_task_wakeups(sched); | |
0ec04e16 | 3292 | |
0e9b07e5 | 3293 | create_tasks(sched); |
0ec04e16 | 3294 | printf("------------------------------------------------------------\n"); |
0e9b07e5 ACM |
3295 | for (i = 0; i < sched->replay_repeat; i++) |
3296 | run_one_test(sched); | |
a116e05d ACM |
3297 | |
3298 | return 0; | |
0ec04e16 IM |
3299 | } |
3300 | ||
0e9b07e5 ACM |
3301 | static void setup_sorting(struct perf_sched *sched, const struct option *options, |
3302 | const char * const usage_msg[]) | |
daa1d7a5 | 3303 | { |
0e9b07e5 | 3304 | char *tmp, *tok, *str = strdup(sched->sort_order); |
daa1d7a5 FW |
3305 | |
3306 | for (tok = strtok_r(str, ", ", &tmp); | |
3307 | tok; tok = strtok_r(NULL, ", ", &tmp)) { | |
0e9b07e5 | 3308 | if (sort_dimension__add(tok, &sched->sort_list) < 0) { |
c7118369 NK |
3309 | usage_with_options_msg(usage_msg, options, |
3310 | "Unknown --sort key: `%s'", tok); | |
daa1d7a5 FW |
3311 | } |
3312 | } | |
3313 | ||
3314 | free(str); | |
3315 | ||
0e9b07e5 | 3316 | sort_dimension__add("pid", &sched->cmp_pid); |
daa1d7a5 FW |
3317 | } |
3318 | ||
1fc35b29 IM |
3319 | static int __cmd_record(int argc, const char **argv) |
3320 | { | |
3321 | unsigned int rec_argc, i, j; | |
3322 | const char **rec_argv; | |
0e9b07e5 ACM |
3323 | const char * const record_args[] = { |
3324 | "record", | |
3325 | "-a", | |
3326 | "-R", | |
0e9b07e5 ACM |
3327 | "-m", "1024", |
3328 | "-c", "1", | |
3329 | "-e", "sched:sched_switch", | |
3330 | "-e", "sched:sched_stat_wait", | |
3331 | "-e", "sched:sched_stat_sleep", | |
3332 | "-e", "sched:sched_stat_iowait", | |
3333 | "-e", "sched:sched_stat_runtime", | |
0e9b07e5 ACM |
3334 | "-e", "sched:sched_process_fork", |
3335 | "-e", "sched:sched_wakeup", | |
7fff9597 | 3336 | "-e", "sched:sched_wakeup_new", |
0e9b07e5 ACM |
3337 | "-e", "sched:sched_migrate_task", |
3338 | }; | |
1fc35b29 IM |
3339 | |
3340 | rec_argc = ARRAY_SIZE(record_args) + argc - 1; | |
3341 | rec_argv = calloc(rec_argc + 1, sizeof(char *)); | |
3342 | ||
e462dc55 | 3343 | if (rec_argv == NULL) |
ce47dc56 CS |
3344 | return -ENOMEM; |
3345 | ||
1fc35b29 IM |
3346 | for (i = 0; i < ARRAY_SIZE(record_args); i++) |
3347 | rec_argv[i] = strdup(record_args[i]); | |
3348 | ||
3349 | for (j = 1; j < (unsigned int)argc; j++, i++) | |
3350 | rec_argv[i] = argv[j]; | |
3351 | ||
3352 | BUG_ON(i != rec_argc); | |
3353 | ||
b0ad8ea6 | 3354 | return cmd_record(i, rec_argv); |
1fc35b29 IM |
3355 | } |
3356 | ||
b0ad8ea6 | 3357 | int cmd_sched(int argc, const char **argv) |
0a02ad93 | 3358 | { |
49b8e2be | 3359 | static const char default_sort_order[] = "avg, max, switch, runtime"; |
8a39df8f AH |
3360 | struct perf_sched sched = { |
3361 | .tool = { | |
3362 | .sample = perf_sched__process_tracepoint_sample, | |
99a3c3a9 | 3363 | .comm = perf_sched__process_comm, |
f3b3614a | 3364 | .namespaces = perf_event__process_namespaces, |
8a39df8f AH |
3365 | .lost = perf_event__process_lost, |
3366 | .fork = perf_sched__process_fork_event, | |
0a8cb85c | 3367 | .ordered_events = true, |
8a39df8f AH |
3368 | }, |
3369 | .cmp_pid = LIST_HEAD_INIT(sched.cmp_pid), | |
3370 | .sort_list = LIST_HEAD_INIT(sched.sort_list), | |
3371 | .start_work_mutex = PTHREAD_MUTEX_INITIALIZER, | |
3372 | .work_done_wait_mutex = PTHREAD_MUTEX_INITIALIZER, | |
8a39df8f AH |
3373 | .sort_order = default_sort_order, |
3374 | .replay_repeat = 10, | |
3375 | .profile_cpu = -1, | |
3376 | .next_shortname1 = 'A', | |
3377 | .next_shortname2 = '0', | |
2f80dd44 | 3378 | .skip_merge = 0, |
6c973c90 DA |
3379 | .show_callchain = 1, |
3380 | .max_stack = 5, | |
8a39df8f | 3381 | }; |
77f02f44 NK |
3382 | const struct option sched_options[] = { |
3383 | OPT_STRING('i', "input", &input_name, "file", | |
3384 | "input file name"), | |
3385 | OPT_INCR('v', "verbose", &verbose, | |
3386 | "be more verbose (show symbol address, etc)"), | |
3387 | OPT_BOOLEAN('D', "dump-raw-trace", &dump_trace, | |
3388 | "dump raw trace in ASCII"), | |
6fa94258 | 3389 | OPT_BOOLEAN('f', "force", &sched.force, "don't complain, do it"), |
77f02f44 NK |
3390 | OPT_END() |
3391 | }; | |
0e9b07e5 ACM |
3392 | const struct option latency_options[] = { |
3393 | OPT_STRING('s', "sort", &sched.sort_order, "key[,key2...]", | |
3394 | "sort by key(s): runtime, switch, avg, max"), | |
0e9b07e5 ACM |
3395 | OPT_INTEGER('C', "CPU", &sched.profile_cpu, |
3396 | "CPU to profile on"), | |
2f80dd44 JB |
3397 | OPT_BOOLEAN('p', "pids", &sched.skip_merge, |
3398 | "latency stats per pid instead of per comm"), | |
77f02f44 | 3399 | OPT_PARENT(sched_options) |
0e9b07e5 ACM |
3400 | }; |
3401 | const struct option replay_options[] = { | |
3402 | OPT_UINTEGER('r', "repeat", &sched.replay_repeat, | |
3403 | "repeat the workload replay N times (-1: infinite)"), | |
77f02f44 | 3404 | OPT_PARENT(sched_options) |
0e9b07e5 | 3405 | }; |
99623c62 JO |
3406 | const struct option map_options[] = { |
3407 | OPT_BOOLEAN(0, "compact", &sched.map.comp, | |
3408 | "map output in compact mode"), | |
a151a37a JO |
3409 | OPT_STRING(0, "color-pids", &sched.map.color_pids_str, "pids", |
3410 | "highlight given pids in map"), | |
cf294f24 JO |
3411 | OPT_STRING(0, "color-cpus", &sched.map.color_cpus_str, "cpus", |
3412 | "highlight given CPUs in map"), | |
73643bb6 JO |
3413 | OPT_STRING(0, "cpus", &sched.map.cpus_str, "cpus", |
3414 | "display given CPUs in map"), | |
77f02f44 | 3415 | OPT_PARENT(sched_options) |
99623c62 | 3416 | }; |
49394a2a DA |
3417 | const struct option timehist_options[] = { |
3418 | OPT_STRING('k', "vmlinux", &symbol_conf.vmlinux_name, | |
3419 | "file", "vmlinux pathname"), | |
3420 | OPT_STRING(0, "kallsyms", &symbol_conf.kallsyms_name, | |
3421 | "file", "kallsyms pathname"), | |
6c973c90 DA |
3422 | OPT_BOOLEAN('g', "call-graph", &sched.show_callchain, |
3423 | "Display call chains if present (default on)"), | |
3424 | OPT_UINTEGER(0, "max-stack", &sched.max_stack, | |
3425 | "Maximum number of functions to display backtrace."), | |
49394a2a DA |
3426 | OPT_STRING(0, "symfs", &symbol_conf.symfs, "directory", |
3427 | "Look for files with symbols relative to this directory"), | |
52df138c DA |
3428 | OPT_BOOLEAN('s', "summary", &sched.summary_only, |
3429 | "Show only syscall summary with statistics"), | |
3430 | OPT_BOOLEAN('S', "with-summary", &sched.summary, | |
3431 | "Show all syscalls and summary with statistics"), | |
fc1469f1 | 3432 | OPT_BOOLEAN('w', "wakeups", &sched.show_wakeups, "Show wakeup events"), |
292c4a8f | 3433 | OPT_BOOLEAN('n', "next", &sched.show_next, "Show next task"), |
350f54fa | 3434 | OPT_BOOLEAN('M', "migrations", &sched.show_migrations, "Show migration events"), |
a407b067 | 3435 | OPT_BOOLEAN('V', "cpu-visual", &sched.show_cpu_visual, "Add CPU visual"), |
07235f84 | 3436 | OPT_BOOLEAN('I', "idle-hist", &sched.idle_hist, "Show idle events only"), |
853b7407 DA |
3437 | OPT_STRING(0, "time", &sched.time_str, "str", |
3438 | "Time span for analysis (start,stop)"), | |
414e050c | 3439 | OPT_BOOLEAN(0, "state", &sched.show_state, "Show task state when sched-out"), |
0f59d7a3 DA |
3440 | OPT_STRING('p', "pid", &symbol_conf.pid_list_str, "pid[,pid...]", |
3441 | "analyze events only for given process id(s)"), | |
3442 | OPT_STRING('t', "tid", &symbol_conf.tid_list_str, "tid[,tid...]", | |
3443 | "analyze events only for given thread id(s)"), | |
c30d630d | 3444 | OPT_STRING('C', "cpu", &cpu_list, "cpu", "list of cpus to profile"), |
49394a2a DA |
3445 | OPT_PARENT(sched_options) |
3446 | }; | |
3447 | ||
0e9b07e5 ACM |
3448 | const char * const latency_usage[] = { |
3449 | "perf sched latency [<options>]", | |
3450 | NULL | |
3451 | }; | |
3452 | const char * const replay_usage[] = { | |
3453 | "perf sched replay [<options>]", | |
3454 | NULL | |
3455 | }; | |
99623c62 JO |
3456 | const char * const map_usage[] = { |
3457 | "perf sched map [<options>]", | |
3458 | NULL | |
3459 | }; | |
49394a2a DA |
3460 | const char * const timehist_usage[] = { |
3461 | "perf sched timehist [<options>]", | |
3462 | NULL | |
3463 | }; | |
a83edb2d | 3464 | const char *const sched_subcommands[] = { "record", "latency", "map", |
49394a2a DA |
3465 | "replay", "script", |
3466 | "timehist", NULL }; | |
a83edb2d RR |
3467 | const char *sched_usage[] = { |
3468 | NULL, | |
0e9b07e5 ACM |
3469 | NULL |
3470 | }; | |
3471 | struct trace_sched_handler lat_ops = { | |
3472 | .wakeup_event = latency_wakeup_event, | |
3473 | .switch_event = latency_switch_event, | |
3474 | .runtime_event = latency_runtime_event, | |
0e9b07e5 ACM |
3475 | .migrate_task_event = latency_migrate_task_event, |
3476 | }; | |
3477 | struct trace_sched_handler map_ops = { | |
3478 | .switch_event = map_switch_event, | |
3479 | }; | |
3480 | struct trace_sched_handler replay_ops = { | |
3481 | .wakeup_event = replay_wakeup_event, | |
3482 | .switch_event = replay_switch_event, | |
3483 | .fork_event = replay_fork_event, | |
3484 | }; | |
156a2b02 AH |
3485 | unsigned int i; |
3486 | ||
3487 | for (i = 0; i < ARRAY_SIZE(sched.curr_pid); i++) | |
3488 | sched.curr_pid[i] = -1; | |
0e9b07e5 | 3489 | |
a83edb2d RR |
3490 | argc = parse_options_subcommand(argc, argv, sched_options, sched_subcommands, |
3491 | sched_usage, PARSE_OPT_STOP_AT_NON_OPTION); | |
f2858d8a IM |
3492 | if (!argc) |
3493 | usage_with_options(sched_usage, sched_options); | |
0a02ad93 | 3494 | |
c0777c5a | 3495 | /* |
133dc4c3 | 3496 | * Aliased to 'perf script' for now: |
c0777c5a | 3497 | */ |
133dc4c3 | 3498 | if (!strcmp(argv[0], "script")) |
b0ad8ea6 | 3499 | return cmd_script(argc, argv); |
c0777c5a | 3500 | |
1fc35b29 IM |
3501 | if (!strncmp(argv[0], "rec", 3)) { |
3502 | return __cmd_record(argc, argv); | |
3503 | } else if (!strncmp(argv[0], "lat", 3)) { | |
0e9b07e5 | 3504 | sched.tp_handler = &lat_ops; |
f2858d8a IM |
3505 | if (argc > 1) { |
3506 | argc = parse_options(argc, argv, latency_options, latency_usage, 0); | |
3507 | if (argc) | |
3508 | usage_with_options(latency_usage, latency_options); | |
f2858d8a | 3509 | } |
0e9b07e5 ACM |
3510 | setup_sorting(&sched, latency_options, latency_usage); |
3511 | return perf_sched__lat(&sched); | |
0ec04e16 | 3512 | } else if (!strcmp(argv[0], "map")) { |
99623c62 | 3513 | if (argc) { |
a151a37a | 3514 | argc = parse_options(argc, argv, map_options, map_usage, 0); |
99623c62 JO |
3515 | if (argc) |
3516 | usage_with_options(map_usage, map_options); | |
3517 | } | |
0e9b07e5 ACM |
3518 | sched.tp_handler = &map_ops; |
3519 | setup_sorting(&sched, latency_options, latency_usage); | |
3520 | return perf_sched__map(&sched); | |
f2858d8a | 3521 | } else if (!strncmp(argv[0], "rep", 3)) { |
0e9b07e5 | 3522 | sched.tp_handler = &replay_ops; |
f2858d8a IM |
3523 | if (argc) { |
3524 | argc = parse_options(argc, argv, replay_options, replay_usage, 0); | |
3525 | if (argc) | |
3526 | usage_with_options(replay_usage, replay_options); | |
3527 | } | |
0e9b07e5 | 3528 | return perf_sched__replay(&sched); |
49394a2a DA |
3529 | } else if (!strcmp(argv[0], "timehist")) { |
3530 | if (argc) { | |
3531 | argc = parse_options(argc, argv, timehist_options, | |
3532 | timehist_usage, 0); | |
3533 | if (argc) | |
3534 | usage_with_options(timehist_usage, timehist_options); | |
3535 | } | |
292c4a8f BG |
3536 | if ((sched.show_wakeups || sched.show_next) && |
3537 | sched.summary_only) { | |
3538 | pr_err(" Error: -s and -[n|w] are mutually exclusive.\n"); | |
fc1469f1 | 3539 | parse_options_usage(timehist_usage, timehist_options, "s", true); |
292c4a8f BG |
3540 | if (sched.show_wakeups) |
3541 | parse_options_usage(NULL, timehist_options, "w", true); | |
3542 | if (sched.show_next) | |
3543 | parse_options_usage(NULL, timehist_options, "n", true); | |
fc1469f1 DA |
3544 | return -EINVAL; |
3545 | } | |
3546 | ||
49394a2a | 3547 | return perf_sched__timehist(&sched); |
f2858d8a IM |
3548 | } else { |
3549 | usage_with_options(sched_usage, sched_options); | |
3550 | } | |
3551 | ||
ec156764 | 3552 | return 0; |
0a02ad93 | 3553 | } |