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Commit | Line | Data |
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0a02ad93 | 1 | #include "builtin.h" |
b1ffe8f3 | 2 | #include "perf.h" |
0a02ad93 IM |
3 | |
4 | #include "util/util.h" | |
ee29be62 | 5 | #include "util/evlist.h" |
0a02ad93 | 6 | #include "util/cache.h" |
e3f42609 | 7 | #include "util/evsel.h" |
0a02ad93 IM |
8 | #include "util/symbol.h" |
9 | #include "util/thread.h" | |
10 | #include "util/header.h" | |
94c744b6 | 11 | #include "util/session.h" |
45694aa7 | 12 | #include "util/tool.h" |
57480d2c | 13 | #include "util/cloexec.h" |
a151a37a | 14 | #include "util/thread_map.h" |
8cd91195 | 15 | #include "util/color.h" |
49394a2a | 16 | #include "util/stat.h" |
6c973c90 | 17 | #include "util/callchain.h" |
853b7407 | 18 | #include "util/time-utils.h" |
0a02ad93 | 19 | |
4b6ab94e | 20 | #include <subcmd/parse-options.h> |
b1ffe8f3 | 21 | #include "util/trace-event.h" |
0a02ad93 | 22 | |
0a02ad93 IM |
23 | #include "util/debug.h" |
24 | ||
49394a2a | 25 | #include <linux/log2.h> |
b1ffe8f3 | 26 | #include <sys/prctl.h> |
7b78f136 | 27 | #include <sys/resource.h> |
0a02ad93 | 28 | |
b1ffe8f3 IM |
29 | #include <semaphore.h> |
30 | #include <pthread.h> | |
31 | #include <math.h> | |
cb06ac25 | 32 | #include <api/fs/fs.h> |
4fc76e49 | 33 | #include <linux/time64.h> |
419ab0d6 | 34 | |
b1ffe8f3 IM |
35 | #define PR_SET_NAME 15 /* Set process name */ |
36 | #define MAX_CPUS 4096 | |
b1ffe8f3 IM |
37 | #define COMM_LEN 20 |
38 | #define SYM_LEN 129 | |
a35e27d0 | 39 | #define MAX_PID 1024000 |
ec156764 | 40 | |
39aeb52f | 41 | struct sched_atom; |
ec156764 | 42 | |
b1ffe8f3 IM |
43 | struct task_desc { |
44 | unsigned long nr; | |
45 | unsigned long pid; | |
46 | char comm[COMM_LEN]; | |
ec156764 | 47 | |
b1ffe8f3 IM |
48 | unsigned long nr_events; |
49 | unsigned long curr_event; | |
39aeb52f | 50 | struct sched_atom **atoms; |
b1ffe8f3 IM |
51 | |
52 | pthread_t thread; | |
53 | sem_t sleep_sem; | |
ec156764 | 54 | |
b1ffe8f3 IM |
55 | sem_t ready_for_work; |
56 | sem_t work_done_sem; | |
57 | ||
58 | u64 cpu_usage; | |
59 | }; | |
60 | ||
61 | enum sched_event_type { | |
62 | SCHED_EVENT_RUN, | |
63 | SCHED_EVENT_SLEEP, | |
64 | SCHED_EVENT_WAKEUP, | |
55ffb7a6 | 65 | SCHED_EVENT_MIGRATION, |
b1ffe8f3 IM |
66 | }; |
67 | ||
39aeb52f | 68 | struct sched_atom { |
b1ffe8f3 | 69 | enum sched_event_type type; |
eed05fe7 | 70 | int specific_wait; |
b1ffe8f3 IM |
71 | u64 timestamp; |
72 | u64 duration; | |
73 | unsigned long nr; | |
b1ffe8f3 IM |
74 | sem_t *wait_sem; |
75 | struct task_desc *wakee; | |
76 | }; | |
77 | ||
e936e8e4 | 78 | #define TASK_STATE_TO_CHAR_STR "RSDTtZXxKWP" |
b1ffe8f3 IM |
79 | |
80 | enum thread_state { | |
81 | THREAD_SLEEPING = 0, | |
82 | THREAD_WAIT_CPU, | |
83 | THREAD_SCHED_IN, | |
84 | THREAD_IGNORE | |
85 | }; | |
86 | ||
87 | struct work_atom { | |
88 | struct list_head list; | |
89 | enum thread_state state; | |
aa1ab9d2 | 90 | u64 sched_out_time; |
b1ffe8f3 IM |
91 | u64 wake_up_time; |
92 | u64 sched_in_time; | |
93 | u64 runtime; | |
94 | }; | |
95 | ||
39aeb52f | 96 | struct work_atoms { |
97 | struct list_head work_list; | |
b1ffe8f3 IM |
98 | struct thread *thread; |
99 | struct rb_node node; | |
100 | u64 max_lat; | |
3786310a | 101 | u64 max_lat_at; |
b1ffe8f3 IM |
102 | u64 total_lat; |
103 | u64 nb_atoms; | |
104 | u64 total_runtime; | |
2f80dd44 | 105 | int num_merged; |
b1ffe8f3 IM |
106 | }; |
107 | ||
39aeb52f | 108 | typedef int (*sort_fn_t)(struct work_atoms *, struct work_atoms *); |
b1ffe8f3 | 109 | |
9ec3f4e4 | 110 | struct perf_sched; |
0e9b07e5 | 111 | |
9ec3f4e4 ACM |
112 | struct trace_sched_handler { |
113 | int (*switch_event)(struct perf_sched *sched, struct perf_evsel *evsel, | |
114 | struct perf_sample *sample, struct machine *machine); | |
0e9b07e5 | 115 | |
9ec3f4e4 ACM |
116 | int (*runtime_event)(struct perf_sched *sched, struct perf_evsel *evsel, |
117 | struct perf_sample *sample, struct machine *machine); | |
0e9b07e5 | 118 | |
9ec3f4e4 ACM |
119 | int (*wakeup_event)(struct perf_sched *sched, struct perf_evsel *evsel, |
120 | struct perf_sample *sample, struct machine *machine); | |
0e9b07e5 | 121 | |
cb627505 DA |
122 | /* PERF_RECORD_FORK event, not sched_process_fork tracepoint */ |
123 | int (*fork_event)(struct perf_sched *sched, union perf_event *event, | |
124 | struct machine *machine); | |
0e9b07e5 ACM |
125 | |
126 | int (*migrate_task_event)(struct perf_sched *sched, | |
9ec3f4e4 ACM |
127 | struct perf_evsel *evsel, |
128 | struct perf_sample *sample, | |
129 | struct machine *machine); | |
0e9b07e5 ACM |
130 | }; |
131 | ||
a151a37a | 132 | #define COLOR_PIDS PERF_COLOR_BLUE |
cf294f24 | 133 | #define COLOR_CPUS PERF_COLOR_BG_RED |
a151a37a | 134 | |
99623c62 JO |
135 | struct perf_sched_map { |
136 | DECLARE_BITMAP(comp_cpus_mask, MAX_CPUS); | |
137 | int *comp_cpus; | |
138 | bool comp; | |
a151a37a JO |
139 | struct thread_map *color_pids; |
140 | const char *color_pids_str; | |
cf294f24 JO |
141 | struct cpu_map *color_cpus; |
142 | const char *color_cpus_str; | |
73643bb6 JO |
143 | struct cpu_map *cpus; |
144 | const char *cpus_str; | |
99623c62 JO |
145 | }; |
146 | ||
0e9b07e5 ACM |
147 | struct perf_sched { |
148 | struct perf_tool tool; | |
0e9b07e5 ACM |
149 | const char *sort_order; |
150 | unsigned long nr_tasks; | |
cb06ac25 | 151 | struct task_desc **pid_to_task; |
0e9b07e5 ACM |
152 | struct task_desc **tasks; |
153 | const struct trace_sched_handler *tp_handler; | |
154 | pthread_mutex_t start_work_mutex; | |
155 | pthread_mutex_t work_done_wait_mutex; | |
156 | int profile_cpu; | |
157 | /* | |
158 | * Track the current task - that way we can know whether there's any | |
159 | * weird events, such as a task being switched away that is not current. | |
160 | */ | |
161 | int max_cpu; | |
162 | u32 curr_pid[MAX_CPUS]; | |
163 | struct thread *curr_thread[MAX_CPUS]; | |
164 | char next_shortname1; | |
165 | char next_shortname2; | |
166 | unsigned int replay_repeat; | |
167 | unsigned long nr_run_events; | |
168 | unsigned long nr_sleep_events; | |
169 | unsigned long nr_wakeup_events; | |
170 | unsigned long nr_sleep_corrections; | |
171 | unsigned long nr_run_events_optimized; | |
172 | unsigned long targetless_wakeups; | |
173 | unsigned long multitarget_wakeups; | |
174 | unsigned long nr_runs; | |
175 | unsigned long nr_timestamps; | |
176 | unsigned long nr_unordered_timestamps; | |
0e9b07e5 ACM |
177 | unsigned long nr_context_switch_bugs; |
178 | unsigned long nr_events; | |
179 | unsigned long nr_lost_chunks; | |
180 | unsigned long nr_lost_events; | |
181 | u64 run_measurement_overhead; | |
182 | u64 sleep_measurement_overhead; | |
183 | u64 start_time; | |
184 | u64 cpu_usage; | |
185 | u64 runavg_cpu_usage; | |
186 | u64 parent_cpu_usage; | |
187 | u64 runavg_parent_cpu_usage; | |
188 | u64 sum_runtime; | |
189 | u64 sum_fluct; | |
190 | u64 run_avg; | |
191 | u64 all_runtime; | |
192 | u64 all_count; | |
193 | u64 cpu_last_switched[MAX_CPUS]; | |
2f80dd44 | 194 | struct rb_root atom_root, sorted_atom_root, merged_atom_root; |
0e9b07e5 | 195 | struct list_head sort_list, cmp_pid; |
939cda52 | 196 | bool force; |
2f80dd44 | 197 | bool skip_merge; |
99623c62 | 198 | struct perf_sched_map map; |
52df138c DA |
199 | |
200 | /* options for timehist command */ | |
201 | bool summary; | |
202 | bool summary_only; | |
699b5b92 | 203 | bool idle_hist; |
6c973c90 DA |
204 | bool show_callchain; |
205 | unsigned int max_stack; | |
a407b067 | 206 | bool show_cpu_visual; |
fc1469f1 | 207 | bool show_wakeups; |
350f54fa | 208 | bool show_migrations; |
52df138c | 209 | u64 skipped_samples; |
853b7407 DA |
210 | const char *time_str; |
211 | struct perf_time_interval ptime; | |
0e9b07e5 | 212 | }; |
b1ffe8f3 | 213 | |
49394a2a DA |
214 | /* per thread run time data */ |
215 | struct thread_runtime { | |
216 | u64 last_time; /* time of previous sched in/out event */ | |
217 | u64 dt_run; /* run time */ | |
218 | u64 dt_wait; /* time between CPU access (off cpu) */ | |
219 | u64 dt_delay; /* time between wakeup and sched-in */ | |
220 | u64 ready_to_run; /* time of wakeup */ | |
221 | ||
222 | struct stats run_stats; | |
223 | u64 total_run_time; | |
350f54fa DA |
224 | |
225 | u64 migrations; | |
49394a2a DA |
226 | }; |
227 | ||
228 | /* per event run time data */ | |
229 | struct evsel_runtime { | |
230 | u64 *last_time; /* time this event was last seen per cpu */ | |
231 | u32 ncpu; /* highest cpu slot allocated */ | |
232 | }; | |
233 | ||
3bc2fa9c NK |
234 | /* per cpu idle time data */ |
235 | struct idle_thread_runtime { | |
236 | struct thread_runtime tr; | |
237 | struct thread *last_thread; | |
238 | struct rb_root sorted_root; | |
239 | struct callchain_root callchain; | |
240 | struct callchain_cursor cursor; | |
241 | }; | |
242 | ||
49394a2a DA |
243 | /* track idle times per cpu */ |
244 | static struct thread **idle_threads; | |
245 | static int idle_max_cpu; | |
246 | static char idle_comm[] = "<idle>"; | |
247 | ||
b1ffe8f3 | 248 | static u64 get_nsecs(void) |
ec156764 IM |
249 | { |
250 | struct timespec ts; | |
251 | ||
252 | clock_gettime(CLOCK_MONOTONIC, &ts); | |
253 | ||
4fc76e49 | 254 | return ts.tv_sec * NSEC_PER_SEC + ts.tv_nsec; |
ec156764 IM |
255 | } |
256 | ||
0e9b07e5 | 257 | static void burn_nsecs(struct perf_sched *sched, u64 nsecs) |
ec156764 | 258 | { |
b1ffe8f3 | 259 | u64 T0 = get_nsecs(), T1; |
ec156764 IM |
260 | |
261 | do { | |
262 | T1 = get_nsecs(); | |
0e9b07e5 | 263 | } while (T1 + sched->run_measurement_overhead < T0 + nsecs); |
ec156764 IM |
264 | } |
265 | ||
b1ffe8f3 | 266 | static void sleep_nsecs(u64 nsecs) |
ec156764 IM |
267 | { |
268 | struct timespec ts; | |
269 | ||
270 | ts.tv_nsec = nsecs % 999999999; | |
271 | ts.tv_sec = nsecs / 999999999; | |
272 | ||
273 | nanosleep(&ts, NULL); | |
274 | } | |
275 | ||
0e9b07e5 | 276 | static void calibrate_run_measurement_overhead(struct perf_sched *sched) |
ec156764 | 277 | { |
4fc76e49 | 278 | u64 T0, T1, delta, min_delta = NSEC_PER_SEC; |
ec156764 IM |
279 | int i; |
280 | ||
281 | for (i = 0; i < 10; i++) { | |
282 | T0 = get_nsecs(); | |
0e9b07e5 | 283 | burn_nsecs(sched, 0); |
ec156764 IM |
284 | T1 = get_nsecs(); |
285 | delta = T1-T0; | |
286 | min_delta = min(min_delta, delta); | |
287 | } | |
0e9b07e5 | 288 | sched->run_measurement_overhead = min_delta; |
ec156764 | 289 | |
9486aa38 | 290 | printf("run measurement overhead: %" PRIu64 " nsecs\n", min_delta); |
ec156764 IM |
291 | } |
292 | ||
0e9b07e5 | 293 | static void calibrate_sleep_measurement_overhead(struct perf_sched *sched) |
ec156764 | 294 | { |
4fc76e49 | 295 | u64 T0, T1, delta, min_delta = NSEC_PER_SEC; |
ec156764 IM |
296 | int i; |
297 | ||
298 | for (i = 0; i < 10; i++) { | |
299 | T0 = get_nsecs(); | |
300 | sleep_nsecs(10000); | |
301 | T1 = get_nsecs(); | |
302 | delta = T1-T0; | |
303 | min_delta = min(min_delta, delta); | |
304 | } | |
305 | min_delta -= 10000; | |
0e9b07e5 | 306 | sched->sleep_measurement_overhead = min_delta; |
ec156764 | 307 | |
9486aa38 | 308 | printf("sleep measurement overhead: %" PRIu64 " nsecs\n", min_delta); |
ec156764 IM |
309 | } |
310 | ||
39aeb52f | 311 | static struct sched_atom * |
b1ffe8f3 | 312 | get_new_event(struct task_desc *task, u64 timestamp) |
ec156764 | 313 | { |
36479484 | 314 | struct sched_atom *event = zalloc(sizeof(*event)); |
ec156764 IM |
315 | unsigned long idx = task->nr_events; |
316 | size_t size; | |
317 | ||
318 | event->timestamp = timestamp; | |
319 | event->nr = idx; | |
320 | ||
321 | task->nr_events++; | |
39aeb52f | 322 | size = sizeof(struct sched_atom *) * task->nr_events; |
323 | task->atoms = realloc(task->atoms, size); | |
324 | BUG_ON(!task->atoms); | |
ec156764 | 325 | |
39aeb52f | 326 | task->atoms[idx] = event; |
ec156764 IM |
327 | |
328 | return event; | |
329 | } | |
330 | ||
39aeb52f | 331 | static struct sched_atom *last_event(struct task_desc *task) |
ec156764 IM |
332 | { |
333 | if (!task->nr_events) | |
334 | return NULL; | |
335 | ||
39aeb52f | 336 | return task->atoms[task->nr_events - 1]; |
ec156764 IM |
337 | } |
338 | ||
0e9b07e5 ACM |
339 | static void add_sched_event_run(struct perf_sched *sched, struct task_desc *task, |
340 | u64 timestamp, u64 duration) | |
ec156764 | 341 | { |
39aeb52f | 342 | struct sched_atom *event, *curr_event = last_event(task); |
ec156764 IM |
343 | |
344 | /* | |
fbf94829 IM |
345 | * optimize an existing RUN event by merging this one |
346 | * to it: | |
347 | */ | |
ec156764 | 348 | if (curr_event && curr_event->type == SCHED_EVENT_RUN) { |
0e9b07e5 | 349 | sched->nr_run_events_optimized++; |
ec156764 IM |
350 | curr_event->duration += duration; |
351 | return; | |
352 | } | |
353 | ||
354 | event = get_new_event(task, timestamp); | |
355 | ||
356 | event->type = SCHED_EVENT_RUN; | |
357 | event->duration = duration; | |
358 | ||
0e9b07e5 | 359 | sched->nr_run_events++; |
ec156764 IM |
360 | } |
361 | ||
0e9b07e5 ACM |
362 | static void add_sched_event_wakeup(struct perf_sched *sched, struct task_desc *task, |
363 | u64 timestamp, struct task_desc *wakee) | |
ec156764 | 364 | { |
39aeb52f | 365 | struct sched_atom *event, *wakee_event; |
ec156764 IM |
366 | |
367 | event = get_new_event(task, timestamp); | |
368 | event->type = SCHED_EVENT_WAKEUP; | |
369 | event->wakee = wakee; | |
370 | ||
371 | wakee_event = last_event(wakee); | |
372 | if (!wakee_event || wakee_event->type != SCHED_EVENT_SLEEP) { | |
0e9b07e5 | 373 | sched->targetless_wakeups++; |
ec156764 IM |
374 | return; |
375 | } | |
376 | if (wakee_event->wait_sem) { | |
0e9b07e5 | 377 | sched->multitarget_wakeups++; |
ec156764 IM |
378 | return; |
379 | } | |
380 | ||
36479484 | 381 | wakee_event->wait_sem = zalloc(sizeof(*wakee_event->wait_sem)); |
ec156764 IM |
382 | sem_init(wakee_event->wait_sem, 0, 0); |
383 | wakee_event->specific_wait = 1; | |
384 | event->wait_sem = wakee_event->wait_sem; | |
385 | ||
0e9b07e5 | 386 | sched->nr_wakeup_events++; |
ec156764 IM |
387 | } |
388 | ||
0e9b07e5 ACM |
389 | static void add_sched_event_sleep(struct perf_sched *sched, struct task_desc *task, |
390 | u64 timestamp, u64 task_state __maybe_unused) | |
ec156764 | 391 | { |
39aeb52f | 392 | struct sched_atom *event = get_new_event(task, timestamp); |
ec156764 IM |
393 | |
394 | event->type = SCHED_EVENT_SLEEP; | |
395 | ||
0e9b07e5 | 396 | sched->nr_sleep_events++; |
ec156764 IM |
397 | } |
398 | ||
0e9b07e5 ACM |
399 | static struct task_desc *register_pid(struct perf_sched *sched, |
400 | unsigned long pid, const char *comm) | |
ec156764 IM |
401 | { |
402 | struct task_desc *task; | |
cb06ac25 | 403 | static int pid_max; |
ec156764 | 404 | |
cb06ac25 YS |
405 | if (sched->pid_to_task == NULL) { |
406 | if (sysctl__read_int("kernel/pid_max", &pid_max) < 0) | |
407 | pid_max = MAX_PID; | |
408 | BUG_ON((sched->pid_to_task = calloc(pid_max, sizeof(struct task_desc *))) == NULL); | |
409 | } | |
3a423a5c YS |
410 | if (pid >= (unsigned long)pid_max) { |
411 | BUG_ON((sched->pid_to_task = realloc(sched->pid_to_task, (pid + 1) * | |
412 | sizeof(struct task_desc *))) == NULL); | |
413 | while (pid >= (unsigned long)pid_max) | |
414 | sched->pid_to_task[pid_max++] = NULL; | |
415 | } | |
ec156764 | 416 | |
0e9b07e5 | 417 | task = sched->pid_to_task[pid]; |
ec156764 IM |
418 | |
419 | if (task) | |
420 | return task; | |
421 | ||
36479484 | 422 | task = zalloc(sizeof(*task)); |
ec156764 | 423 | task->pid = pid; |
0e9b07e5 | 424 | task->nr = sched->nr_tasks; |
ec156764 IM |
425 | strcpy(task->comm, comm); |
426 | /* | |
427 | * every task starts in sleeping state - this gets ignored | |
428 | * if there's no wakeup pointing to this sleep state: | |
429 | */ | |
0e9b07e5 | 430 | add_sched_event_sleep(sched, task, 0, 0); |
ec156764 | 431 | |
0e9b07e5 ACM |
432 | sched->pid_to_task[pid] = task; |
433 | sched->nr_tasks++; | |
0755bc4d | 434 | sched->tasks = realloc(sched->tasks, sched->nr_tasks * sizeof(struct task_desc *)); |
0e9b07e5 ACM |
435 | BUG_ON(!sched->tasks); |
436 | sched->tasks[task->nr] = task; | |
ec156764 | 437 | |
ad236fd2 | 438 | if (verbose) |
0e9b07e5 | 439 | printf("registered task #%ld, PID %ld (%s)\n", sched->nr_tasks, pid, comm); |
ec156764 IM |
440 | |
441 | return task; | |
442 | } | |
443 | ||
444 | ||
0e9b07e5 | 445 | static void print_task_traces(struct perf_sched *sched) |
ec156764 IM |
446 | { |
447 | struct task_desc *task; | |
448 | unsigned long i; | |
449 | ||
0e9b07e5 ACM |
450 | for (i = 0; i < sched->nr_tasks; i++) { |
451 | task = sched->tasks[i]; | |
ad236fd2 | 452 | printf("task %6ld (%20s:%10ld), nr_events: %ld\n", |
ec156764 IM |
453 | task->nr, task->comm, task->pid, task->nr_events); |
454 | } | |
455 | } | |
456 | ||
0e9b07e5 | 457 | static void add_cross_task_wakeups(struct perf_sched *sched) |
ec156764 IM |
458 | { |
459 | struct task_desc *task1, *task2; | |
460 | unsigned long i, j; | |
461 | ||
0e9b07e5 ACM |
462 | for (i = 0; i < sched->nr_tasks; i++) { |
463 | task1 = sched->tasks[i]; | |
ec156764 | 464 | j = i + 1; |
0e9b07e5 | 465 | if (j == sched->nr_tasks) |
ec156764 | 466 | j = 0; |
0e9b07e5 ACM |
467 | task2 = sched->tasks[j]; |
468 | add_sched_event_wakeup(sched, task1, 0, task2); | |
ec156764 IM |
469 | } |
470 | } | |
471 | ||
0e9b07e5 ACM |
472 | static void perf_sched__process_event(struct perf_sched *sched, |
473 | struct sched_atom *atom) | |
ec156764 IM |
474 | { |
475 | int ret = 0; | |
ec156764 | 476 | |
39aeb52f | 477 | switch (atom->type) { |
ec156764 | 478 | case SCHED_EVENT_RUN: |
0e9b07e5 | 479 | burn_nsecs(sched, atom->duration); |
ec156764 IM |
480 | break; |
481 | case SCHED_EVENT_SLEEP: | |
39aeb52f | 482 | if (atom->wait_sem) |
483 | ret = sem_wait(atom->wait_sem); | |
ec156764 IM |
484 | BUG_ON(ret); |
485 | break; | |
486 | case SCHED_EVENT_WAKEUP: | |
39aeb52f | 487 | if (atom->wait_sem) |
488 | ret = sem_post(atom->wait_sem); | |
ec156764 IM |
489 | BUG_ON(ret); |
490 | break; | |
55ffb7a6 MG |
491 | case SCHED_EVENT_MIGRATION: |
492 | break; | |
ec156764 IM |
493 | default: |
494 | BUG_ON(1); | |
495 | } | |
496 | } | |
497 | ||
b1ffe8f3 | 498 | static u64 get_cpu_usage_nsec_parent(void) |
ec156764 IM |
499 | { |
500 | struct rusage ru; | |
b1ffe8f3 | 501 | u64 sum; |
ec156764 IM |
502 | int err; |
503 | ||
504 | err = getrusage(RUSAGE_SELF, &ru); | |
505 | BUG_ON(err); | |
506 | ||
4fc76e49 ACM |
507 | sum = ru.ru_utime.tv_sec * NSEC_PER_SEC + ru.ru_utime.tv_usec * NSEC_PER_USEC; |
508 | sum += ru.ru_stime.tv_sec * NSEC_PER_SEC + ru.ru_stime.tv_usec * NSEC_PER_USEC; | |
ec156764 IM |
509 | |
510 | return sum; | |
511 | } | |
512 | ||
939cda52 | 513 | static int self_open_counters(struct perf_sched *sched, unsigned long cur_task) |
ec156764 | 514 | { |
c0c9e721 | 515 | struct perf_event_attr attr; |
939cda52 | 516 | char sbuf[STRERR_BUFSIZE], info[STRERR_BUFSIZE]; |
c0c9e721 | 517 | int fd; |
939cda52 YS |
518 | struct rlimit limit; |
519 | bool need_privilege = false; | |
ec156764 | 520 | |
c0c9e721 | 521 | memset(&attr, 0, sizeof(attr)); |
ec156764 | 522 | |
c0c9e721 XG |
523 | attr.type = PERF_TYPE_SOFTWARE; |
524 | attr.config = PERF_COUNT_SW_TASK_CLOCK; | |
ec156764 | 525 | |
939cda52 | 526 | force_again: |
57480d2c YD |
527 | fd = sys_perf_event_open(&attr, 0, -1, -1, |
528 | perf_event_open_cloexec_flag()); | |
c0c9e721 | 529 | |
1aff59be | 530 | if (fd < 0) { |
939cda52 YS |
531 | if (errno == EMFILE) { |
532 | if (sched->force) { | |
533 | BUG_ON(getrlimit(RLIMIT_NOFILE, &limit) == -1); | |
534 | limit.rlim_cur += sched->nr_tasks - cur_task; | |
535 | if (limit.rlim_cur > limit.rlim_max) { | |
536 | limit.rlim_max = limit.rlim_cur; | |
537 | need_privilege = true; | |
538 | } | |
539 | if (setrlimit(RLIMIT_NOFILE, &limit) == -1) { | |
540 | if (need_privilege && errno == EPERM) | |
541 | strcpy(info, "Need privilege\n"); | |
542 | } else | |
543 | goto force_again; | |
544 | } else | |
545 | strcpy(info, "Have a try with -f option\n"); | |
546 | } | |
60b7d14a | 547 | pr_err("Error: sys_perf_event_open() syscall returned " |
939cda52 | 548 | "with %d (%s)\n%s", fd, |
c8b5f2c9 | 549 | str_error_r(errno, sbuf, sizeof(sbuf)), info); |
1aff59be YS |
550 | exit(EXIT_FAILURE); |
551 | } | |
c0c9e721 XG |
552 | return fd; |
553 | } | |
554 | ||
555 | static u64 get_cpu_usage_nsec_self(int fd) | |
556 | { | |
557 | u64 runtime; | |
558 | int ret; | |
559 | ||
560 | ret = read(fd, &runtime, sizeof(runtime)); | |
561 | BUG_ON(ret != sizeof(runtime)); | |
562 | ||
563 | return runtime; | |
ec156764 IM |
564 | } |
565 | ||
0e9b07e5 ACM |
566 | struct sched_thread_parms { |
567 | struct task_desc *task; | |
568 | struct perf_sched *sched; | |
08097abc | 569 | int fd; |
0e9b07e5 ACM |
570 | }; |
571 | ||
ec156764 IM |
572 | static void *thread_func(void *ctx) |
573 | { | |
0e9b07e5 ACM |
574 | struct sched_thread_parms *parms = ctx; |
575 | struct task_desc *this_task = parms->task; | |
576 | struct perf_sched *sched = parms->sched; | |
b1ffe8f3 | 577 | u64 cpu_usage_0, cpu_usage_1; |
ec156764 IM |
578 | unsigned long i, ret; |
579 | char comm2[22]; | |
08097abc | 580 | int fd = parms->fd; |
ec156764 | 581 | |
74cf249d | 582 | zfree(&parms); |
0e9b07e5 | 583 | |
ec156764 IM |
584 | sprintf(comm2, ":%s", this_task->comm); |
585 | prctl(PR_SET_NAME, comm2); | |
a116e05d ACM |
586 | if (fd < 0) |
587 | return NULL; | |
ec156764 IM |
588 | again: |
589 | ret = sem_post(&this_task->ready_for_work); | |
590 | BUG_ON(ret); | |
0e9b07e5 | 591 | ret = pthread_mutex_lock(&sched->start_work_mutex); |
ec156764 | 592 | BUG_ON(ret); |
0e9b07e5 | 593 | ret = pthread_mutex_unlock(&sched->start_work_mutex); |
ec156764 | 594 | BUG_ON(ret); |
ec156764 | 595 | |
c0c9e721 | 596 | cpu_usage_0 = get_cpu_usage_nsec_self(fd); |
ec156764 IM |
597 | |
598 | for (i = 0; i < this_task->nr_events; i++) { | |
599 | this_task->curr_event = i; | |
0e9b07e5 | 600 | perf_sched__process_event(sched, this_task->atoms[i]); |
ec156764 IM |
601 | } |
602 | ||
c0c9e721 | 603 | cpu_usage_1 = get_cpu_usage_nsec_self(fd); |
ec156764 | 604 | this_task->cpu_usage = cpu_usage_1 - cpu_usage_0; |
ec156764 IM |
605 | ret = sem_post(&this_task->work_done_sem); |
606 | BUG_ON(ret); | |
ec156764 | 607 | |
0e9b07e5 | 608 | ret = pthread_mutex_lock(&sched->work_done_wait_mutex); |
ec156764 | 609 | BUG_ON(ret); |
0e9b07e5 | 610 | ret = pthread_mutex_unlock(&sched->work_done_wait_mutex); |
ec156764 | 611 | BUG_ON(ret); |
ec156764 IM |
612 | |
613 | goto again; | |
614 | } | |
615 | ||
0e9b07e5 | 616 | static void create_tasks(struct perf_sched *sched) |
ec156764 IM |
617 | { |
618 | struct task_desc *task; | |
619 | pthread_attr_t attr; | |
620 | unsigned long i; | |
621 | int err; | |
622 | ||
623 | err = pthread_attr_init(&attr); | |
624 | BUG_ON(err); | |
12f7e036 JP |
625 | err = pthread_attr_setstacksize(&attr, |
626 | (size_t) max(16 * 1024, PTHREAD_STACK_MIN)); | |
ec156764 | 627 | BUG_ON(err); |
0e9b07e5 | 628 | err = pthread_mutex_lock(&sched->start_work_mutex); |
ec156764 | 629 | BUG_ON(err); |
0e9b07e5 | 630 | err = pthread_mutex_lock(&sched->work_done_wait_mutex); |
ec156764 | 631 | BUG_ON(err); |
0e9b07e5 ACM |
632 | for (i = 0; i < sched->nr_tasks; i++) { |
633 | struct sched_thread_parms *parms = malloc(sizeof(*parms)); | |
634 | BUG_ON(parms == NULL); | |
635 | parms->task = task = sched->tasks[i]; | |
636 | parms->sched = sched; | |
939cda52 | 637 | parms->fd = self_open_counters(sched, i); |
ec156764 IM |
638 | sem_init(&task->sleep_sem, 0, 0); |
639 | sem_init(&task->ready_for_work, 0, 0); | |
640 | sem_init(&task->work_done_sem, 0, 0); | |
641 | task->curr_event = 0; | |
0e9b07e5 | 642 | err = pthread_create(&task->thread, &attr, thread_func, parms); |
ec156764 IM |
643 | BUG_ON(err); |
644 | } | |
645 | } | |
646 | ||
0e9b07e5 | 647 | static void wait_for_tasks(struct perf_sched *sched) |
ec156764 | 648 | { |
b1ffe8f3 | 649 | u64 cpu_usage_0, cpu_usage_1; |
ec156764 IM |
650 | struct task_desc *task; |
651 | unsigned long i, ret; | |
652 | ||
0e9b07e5 ACM |
653 | sched->start_time = get_nsecs(); |
654 | sched->cpu_usage = 0; | |
655 | pthread_mutex_unlock(&sched->work_done_wait_mutex); | |
ec156764 | 656 | |
0e9b07e5 ACM |
657 | for (i = 0; i < sched->nr_tasks; i++) { |
658 | task = sched->tasks[i]; | |
ec156764 IM |
659 | ret = sem_wait(&task->ready_for_work); |
660 | BUG_ON(ret); | |
661 | sem_init(&task->ready_for_work, 0, 0); | |
662 | } | |
0e9b07e5 | 663 | ret = pthread_mutex_lock(&sched->work_done_wait_mutex); |
ec156764 IM |
664 | BUG_ON(ret); |
665 | ||
666 | cpu_usage_0 = get_cpu_usage_nsec_parent(); | |
667 | ||
0e9b07e5 | 668 | pthread_mutex_unlock(&sched->start_work_mutex); |
ec156764 | 669 | |
0e9b07e5 ACM |
670 | for (i = 0; i < sched->nr_tasks; i++) { |
671 | task = sched->tasks[i]; | |
ec156764 IM |
672 | ret = sem_wait(&task->work_done_sem); |
673 | BUG_ON(ret); | |
674 | sem_init(&task->work_done_sem, 0, 0); | |
0e9b07e5 | 675 | sched->cpu_usage += task->cpu_usage; |
ec156764 IM |
676 | task->cpu_usage = 0; |
677 | } | |
678 | ||
679 | cpu_usage_1 = get_cpu_usage_nsec_parent(); | |
0e9b07e5 ACM |
680 | if (!sched->runavg_cpu_usage) |
681 | sched->runavg_cpu_usage = sched->cpu_usage; | |
ff5f3bbd | 682 | sched->runavg_cpu_usage = (sched->runavg_cpu_usage * (sched->replay_repeat - 1) + sched->cpu_usage) / sched->replay_repeat; |
ec156764 | 683 | |
0e9b07e5 ACM |
684 | sched->parent_cpu_usage = cpu_usage_1 - cpu_usage_0; |
685 | if (!sched->runavg_parent_cpu_usage) | |
686 | sched->runavg_parent_cpu_usage = sched->parent_cpu_usage; | |
ff5f3bbd YS |
687 | sched->runavg_parent_cpu_usage = (sched->runavg_parent_cpu_usage * (sched->replay_repeat - 1) + |
688 | sched->parent_cpu_usage)/sched->replay_repeat; | |
ec156764 | 689 | |
0e9b07e5 | 690 | ret = pthread_mutex_lock(&sched->start_work_mutex); |
ec156764 IM |
691 | BUG_ON(ret); |
692 | ||
0e9b07e5 ACM |
693 | for (i = 0; i < sched->nr_tasks; i++) { |
694 | task = sched->tasks[i]; | |
ec156764 IM |
695 | sem_init(&task->sleep_sem, 0, 0); |
696 | task->curr_event = 0; | |
697 | } | |
698 | } | |
699 | ||
0e9b07e5 | 700 | static void run_one_test(struct perf_sched *sched) |
ec156764 | 701 | { |
fb7d0b3c | 702 | u64 T0, T1, delta, avg_delta, fluct; |
ec156764 IM |
703 | |
704 | T0 = get_nsecs(); | |
0e9b07e5 | 705 | wait_for_tasks(sched); |
ec156764 IM |
706 | T1 = get_nsecs(); |
707 | ||
708 | delta = T1 - T0; | |
0e9b07e5 ACM |
709 | sched->sum_runtime += delta; |
710 | sched->nr_runs++; | |
ec156764 | 711 | |
0e9b07e5 | 712 | avg_delta = sched->sum_runtime / sched->nr_runs; |
ec156764 IM |
713 | if (delta < avg_delta) |
714 | fluct = avg_delta - delta; | |
715 | else | |
716 | fluct = delta - avg_delta; | |
0e9b07e5 ACM |
717 | sched->sum_fluct += fluct; |
718 | if (!sched->run_avg) | |
719 | sched->run_avg = delta; | |
ff5f3bbd | 720 | sched->run_avg = (sched->run_avg * (sched->replay_repeat - 1) + delta) / sched->replay_repeat; |
ec156764 | 721 | |
4fc76e49 | 722 | printf("#%-3ld: %0.3f, ", sched->nr_runs, (double)delta / NSEC_PER_MSEC); |
ec156764 | 723 | |
4fc76e49 | 724 | printf("ravg: %0.2f, ", (double)sched->run_avg / NSEC_PER_MSEC); |
ec156764 | 725 | |
ad236fd2 | 726 | printf("cpu: %0.2f / %0.2f", |
4fc76e49 | 727 | (double)sched->cpu_usage / NSEC_PER_MSEC, (double)sched->runavg_cpu_usage / NSEC_PER_MSEC); |
ec156764 IM |
728 | |
729 | #if 0 | |
730 | /* | |
fbf94829 | 731 | * rusage statistics done by the parent, these are less |
0e9b07e5 | 732 | * accurate than the sched->sum_exec_runtime based statistics: |
fbf94829 | 733 | */ |
ad236fd2 | 734 | printf(" [%0.2f / %0.2f]", |
4fc76e49 ACM |
735 | (double)sched->parent_cpu_usage / NSEC_PER_MSEC, |
736 | (double)sched->runavg_parent_cpu_usage / NSEC_PER_MSEC); | |
ec156764 IM |
737 | #endif |
738 | ||
ad236fd2 | 739 | printf("\n"); |
ec156764 | 740 | |
0e9b07e5 ACM |
741 | if (sched->nr_sleep_corrections) |
742 | printf(" (%ld sleep corrections)\n", sched->nr_sleep_corrections); | |
743 | sched->nr_sleep_corrections = 0; | |
ec156764 IM |
744 | } |
745 | ||
0e9b07e5 | 746 | static void test_calibrations(struct perf_sched *sched) |
ec156764 | 747 | { |
b1ffe8f3 | 748 | u64 T0, T1; |
ec156764 IM |
749 | |
750 | T0 = get_nsecs(); | |
4fc76e49 | 751 | burn_nsecs(sched, NSEC_PER_MSEC); |
ec156764 IM |
752 | T1 = get_nsecs(); |
753 | ||
9486aa38 | 754 | printf("the run test took %" PRIu64 " nsecs\n", T1 - T0); |
ec156764 IM |
755 | |
756 | T0 = get_nsecs(); | |
4fc76e49 | 757 | sleep_nsecs(NSEC_PER_MSEC); |
ec156764 IM |
758 | T1 = get_nsecs(); |
759 | ||
9486aa38 | 760 | printf("the sleep test took %" PRIu64 " nsecs\n", T1 - T0); |
ec156764 IM |
761 | } |
762 | ||
a116e05d | 763 | static int |
0e9b07e5 | 764 | replay_wakeup_event(struct perf_sched *sched, |
9ec3f4e4 ACM |
765 | struct perf_evsel *evsel, struct perf_sample *sample, |
766 | struct machine *machine __maybe_unused) | |
419ab0d6 | 767 | { |
9ec3f4e4 ACM |
768 | const char *comm = perf_evsel__strval(evsel, sample, "comm"); |
769 | const u32 pid = perf_evsel__intval(evsel, sample, "pid"); | |
419ab0d6 | 770 | struct task_desc *waker, *wakee; |
fbf94829 | 771 | |
ad236fd2 | 772 | if (verbose) { |
2b7fcbc5 | 773 | printf("sched_wakeup event %p\n", evsel); |
fbf94829 | 774 | |
9ec3f4e4 | 775 | printf(" ... pid %d woke up %s/%d\n", sample->tid, comm, pid); |
ad236fd2 | 776 | } |
fbf94829 | 777 | |
2b7fcbc5 | 778 | waker = register_pid(sched, sample->tid, "<unknown>"); |
9ec3f4e4 | 779 | wakee = register_pid(sched, pid, comm); |
fbf94829 | 780 | |
0e9b07e5 | 781 | add_sched_event_wakeup(sched, waker, sample->time, wakee); |
a116e05d | 782 | return 0; |
ec156764 IM |
783 | } |
784 | ||
9ec3f4e4 ACM |
785 | static int replay_switch_event(struct perf_sched *sched, |
786 | struct perf_evsel *evsel, | |
787 | struct perf_sample *sample, | |
788 | struct machine *machine __maybe_unused) | |
ec156764 | 789 | { |
9ec3f4e4 ACM |
790 | const char *prev_comm = perf_evsel__strval(evsel, sample, "prev_comm"), |
791 | *next_comm = perf_evsel__strval(evsel, sample, "next_comm"); | |
792 | const u32 prev_pid = perf_evsel__intval(evsel, sample, "prev_pid"), | |
793 | next_pid = perf_evsel__intval(evsel, sample, "next_pid"); | |
794 | const u64 prev_state = perf_evsel__intval(evsel, sample, "prev_state"); | |
1d037ca1 | 795 | struct task_desc *prev, __maybe_unused *next; |
7f7f8d0b ACM |
796 | u64 timestamp0, timestamp = sample->time; |
797 | int cpu = sample->cpu; | |
fbf94829 IM |
798 | s64 delta; |
799 | ||
ad236fd2 | 800 | if (verbose) |
2b7fcbc5 | 801 | printf("sched_switch event %p\n", evsel); |
ad236fd2 | 802 | |
fbf94829 | 803 | if (cpu >= MAX_CPUS || cpu < 0) |
a116e05d | 804 | return 0; |
fbf94829 | 805 | |
0e9b07e5 | 806 | timestamp0 = sched->cpu_last_switched[cpu]; |
fbf94829 IM |
807 | if (timestamp0) |
808 | delta = timestamp - timestamp0; | |
809 | else | |
810 | delta = 0; | |
811 | ||
a116e05d | 812 | if (delta < 0) { |
60b7d14a | 813 | pr_err("hm, delta: %" PRIu64 " < 0 ?\n", delta); |
a116e05d ACM |
814 | return -1; |
815 | } | |
fbf94829 | 816 | |
9ec3f4e4 ACM |
817 | pr_debug(" ... switch from %s/%d to %s/%d [ran %" PRIu64 " nsecs]\n", |
818 | prev_comm, prev_pid, next_comm, next_pid, delta); | |
fbf94829 | 819 | |
9ec3f4e4 ACM |
820 | prev = register_pid(sched, prev_pid, prev_comm); |
821 | next = register_pid(sched, next_pid, next_comm); | |
fbf94829 | 822 | |
0e9b07e5 | 823 | sched->cpu_last_switched[cpu] = timestamp; |
fbf94829 | 824 | |
0e9b07e5 | 825 | add_sched_event_run(sched, prev, timestamp, delta); |
9ec3f4e4 | 826 | add_sched_event_sleep(sched, prev, timestamp, prev_state); |
a116e05d ACM |
827 | |
828 | return 0; | |
fbf94829 IM |
829 | } |
830 | ||
cb627505 DA |
831 | static int replay_fork_event(struct perf_sched *sched, |
832 | union perf_event *event, | |
833 | struct machine *machine) | |
419ab0d6 | 834 | { |
cb627505 DA |
835 | struct thread *child, *parent; |
836 | ||
314add6b AH |
837 | child = machine__findnew_thread(machine, event->fork.pid, |
838 | event->fork.tid); | |
839 | parent = machine__findnew_thread(machine, event->fork.ppid, | |
840 | event->fork.ptid); | |
cb627505 DA |
841 | |
842 | if (child == NULL || parent == NULL) { | |
843 | pr_debug("thread does not exist on fork event: child %p, parent %p\n", | |
844 | child, parent); | |
b91fc39f | 845 | goto out_put; |
cb627505 | 846 | } |
9ec3f4e4 | 847 | |
419ab0d6 | 848 | if (verbose) { |
cb627505 | 849 | printf("fork event\n"); |
b9c5143a FW |
850 | printf("... parent: %s/%d\n", thread__comm_str(parent), parent->tid); |
851 | printf("... child: %s/%d\n", thread__comm_str(child), child->tid); | |
419ab0d6 | 852 | } |
9ec3f4e4 | 853 | |
b9c5143a FW |
854 | register_pid(sched, parent->tid, thread__comm_str(parent)); |
855 | register_pid(sched, child->tid, thread__comm_str(child)); | |
b91fc39f ACM |
856 | out_put: |
857 | thread__put(child); | |
858 | thread__put(parent); | |
a116e05d | 859 | return 0; |
419ab0d6 | 860 | } |
fbf94829 | 861 | |
b1ffe8f3 IM |
862 | struct sort_dimension { |
863 | const char *name; | |
b5fae128 | 864 | sort_fn_t cmp; |
b1ffe8f3 IM |
865 | struct list_head list; |
866 | }; | |
867 | ||
daa1d7a5 | 868 | static int |
39aeb52f | 869 | thread_lat_cmp(struct list_head *list, struct work_atoms *l, struct work_atoms *r) |
daa1d7a5 FW |
870 | { |
871 | struct sort_dimension *sort; | |
872 | int ret = 0; | |
873 | ||
b5fae128 IM |
874 | BUG_ON(list_empty(list)); |
875 | ||
daa1d7a5 FW |
876 | list_for_each_entry(sort, list, list) { |
877 | ret = sort->cmp(l, r); | |
878 | if (ret) | |
879 | return ret; | |
880 | } | |
881 | ||
882 | return ret; | |
883 | } | |
884 | ||
39aeb52f | 885 | static struct work_atoms * |
b5fae128 IM |
886 | thread_atoms_search(struct rb_root *root, struct thread *thread, |
887 | struct list_head *sort_list) | |
888 | { | |
889 | struct rb_node *node = root->rb_node; | |
39aeb52f | 890 | struct work_atoms key = { .thread = thread }; |
b5fae128 IM |
891 | |
892 | while (node) { | |
39aeb52f | 893 | struct work_atoms *atoms; |
b5fae128 IM |
894 | int cmp; |
895 | ||
39aeb52f | 896 | atoms = container_of(node, struct work_atoms, node); |
b5fae128 IM |
897 | |
898 | cmp = thread_lat_cmp(sort_list, &key, atoms); | |
899 | if (cmp > 0) | |
900 | node = node->rb_left; | |
901 | else if (cmp < 0) | |
902 | node = node->rb_right; | |
903 | else { | |
904 | BUG_ON(thread != atoms->thread); | |
905 | return atoms; | |
906 | } | |
907 | } | |
908 | return NULL; | |
909 | } | |
910 | ||
cdce9d73 | 911 | static void |
39aeb52f | 912 | __thread_latency_insert(struct rb_root *root, struct work_atoms *data, |
daa1d7a5 | 913 | struct list_head *sort_list) |
cdce9d73 FW |
914 | { |
915 | struct rb_node **new = &(root->rb_node), *parent = NULL; | |
916 | ||
917 | while (*new) { | |
39aeb52f | 918 | struct work_atoms *this; |
daa1d7a5 | 919 | int cmp; |
cdce9d73 | 920 | |
39aeb52f | 921 | this = container_of(*new, struct work_atoms, node); |
cdce9d73 | 922 | parent = *new; |
daa1d7a5 FW |
923 | |
924 | cmp = thread_lat_cmp(sort_list, data, this); | |
925 | ||
926 | if (cmp > 0) | |
cdce9d73 | 927 | new = &((*new)->rb_left); |
cdce9d73 | 928 | else |
daa1d7a5 | 929 | new = &((*new)->rb_right); |
cdce9d73 FW |
930 | } |
931 | ||
932 | rb_link_node(&data->node, parent, new); | |
933 | rb_insert_color(&data->node, root); | |
934 | } | |
935 | ||
0e9b07e5 | 936 | static int thread_atoms_insert(struct perf_sched *sched, struct thread *thread) |
cdce9d73 | 937 | { |
36479484 | 938 | struct work_atoms *atoms = zalloc(sizeof(*atoms)); |
a116e05d ACM |
939 | if (!atoms) { |
940 | pr_err("No memory at %s\n", __func__); | |
941 | return -1; | |
942 | } | |
cdce9d73 | 943 | |
f3b623b8 | 944 | atoms->thread = thread__get(thread); |
39aeb52f | 945 | INIT_LIST_HEAD(&atoms->work_list); |
0e9b07e5 | 946 | __thread_latency_insert(&sched->atom_root, atoms, &sched->cmp_pid); |
a116e05d | 947 | return 0; |
cdce9d73 FW |
948 | } |
949 | ||
9ec3f4e4 | 950 | static char sched_out_state(u64 prev_state) |
cdce9d73 FW |
951 | { |
952 | const char *str = TASK_STATE_TO_CHAR_STR; | |
953 | ||
9ec3f4e4 | 954 | return str[prev_state]; |
cdce9d73 FW |
955 | } |
956 | ||
a116e05d | 957 | static int |
39aeb52f | 958 | add_sched_out_event(struct work_atoms *atoms, |
959 | char run_state, | |
960 | u64 timestamp) | |
cdce9d73 | 961 | { |
36479484 | 962 | struct work_atom *atom = zalloc(sizeof(*atom)); |
a116e05d ACM |
963 | if (!atom) { |
964 | pr_err("Non memory at %s", __func__); | |
965 | return -1; | |
966 | } | |
cdce9d73 | 967 | |
aa1ab9d2 FW |
968 | atom->sched_out_time = timestamp; |
969 | ||
39aeb52f | 970 | if (run_state == 'R') { |
b1ffe8f3 | 971 | atom->state = THREAD_WAIT_CPU; |
aa1ab9d2 | 972 | atom->wake_up_time = atom->sched_out_time; |
c6ced611 FW |
973 | } |
974 | ||
39aeb52f | 975 | list_add_tail(&atom->list, &atoms->work_list); |
a116e05d | 976 | return 0; |
cdce9d73 FW |
977 | } |
978 | ||
979 | static void | |
1d037ca1 IT |
980 | add_runtime_event(struct work_atoms *atoms, u64 delta, |
981 | u64 timestamp __maybe_unused) | |
39aeb52f | 982 | { |
983 | struct work_atom *atom; | |
984 | ||
985 | BUG_ON(list_empty(&atoms->work_list)); | |
986 | ||
987 | atom = list_entry(atoms->work_list.prev, struct work_atom, list); | |
988 | ||
989 | atom->runtime += delta; | |
990 | atoms->total_runtime += delta; | |
991 | } | |
992 | ||
993 | static void | |
994 | add_sched_in_event(struct work_atoms *atoms, u64 timestamp) | |
cdce9d73 | 995 | { |
b1ffe8f3 | 996 | struct work_atom *atom; |
66685678 | 997 | u64 delta; |
cdce9d73 | 998 | |
39aeb52f | 999 | if (list_empty(&atoms->work_list)) |
cdce9d73 FW |
1000 | return; |
1001 | ||
39aeb52f | 1002 | atom = list_entry(atoms->work_list.prev, struct work_atom, list); |
cdce9d73 | 1003 | |
b1ffe8f3 | 1004 | if (atom->state != THREAD_WAIT_CPU) |
cdce9d73 FW |
1005 | return; |
1006 | ||
b1ffe8f3 IM |
1007 | if (timestamp < atom->wake_up_time) { |
1008 | atom->state = THREAD_IGNORE; | |
cdce9d73 FW |
1009 | return; |
1010 | } | |
1011 | ||
b1ffe8f3 IM |
1012 | atom->state = THREAD_SCHED_IN; |
1013 | atom->sched_in_time = timestamp; | |
66685678 | 1014 | |
b1ffe8f3 | 1015 | delta = atom->sched_in_time - atom->wake_up_time; |
66685678 | 1016 | atoms->total_lat += delta; |
3786310a | 1017 | if (delta > atoms->max_lat) { |
66685678 | 1018 | atoms->max_lat = delta; |
3786310a FW |
1019 | atoms->max_lat_at = timestamp; |
1020 | } | |
66685678 | 1021 | atoms->nb_atoms++; |
cdce9d73 FW |
1022 | } |
1023 | ||
9ec3f4e4 ACM |
1024 | static int latency_switch_event(struct perf_sched *sched, |
1025 | struct perf_evsel *evsel, | |
1026 | struct perf_sample *sample, | |
1027 | struct machine *machine) | |
cdce9d73 | 1028 | { |
9ec3f4e4 ACM |
1029 | const u32 prev_pid = perf_evsel__intval(evsel, sample, "prev_pid"), |
1030 | next_pid = perf_evsel__intval(evsel, sample, "next_pid"); | |
1031 | const u64 prev_state = perf_evsel__intval(evsel, sample, "prev_state"); | |
39aeb52f | 1032 | struct work_atoms *out_events, *in_events; |
cdce9d73 | 1033 | struct thread *sched_out, *sched_in; |
7f7f8d0b | 1034 | u64 timestamp0, timestamp = sample->time; |
b91fc39f | 1035 | int cpu = sample->cpu, err = -1; |
ea92ed5a IM |
1036 | s64 delta; |
1037 | ||
39aeb52f | 1038 | BUG_ON(cpu >= MAX_CPUS || cpu < 0); |
ea92ed5a | 1039 | |
0e9b07e5 ACM |
1040 | timestamp0 = sched->cpu_last_switched[cpu]; |
1041 | sched->cpu_last_switched[cpu] = timestamp; | |
ea92ed5a IM |
1042 | if (timestamp0) |
1043 | delta = timestamp - timestamp0; | |
1044 | else | |
1045 | delta = 0; | |
1046 | ||
a116e05d ACM |
1047 | if (delta < 0) { |
1048 | pr_err("hm, delta: %" PRIu64 " < 0 ?\n", delta); | |
1049 | return -1; | |
1050 | } | |
cdce9d73 | 1051 | |
1fcb8768 AH |
1052 | sched_out = machine__findnew_thread(machine, -1, prev_pid); |
1053 | sched_in = machine__findnew_thread(machine, -1, next_pid); | |
b91fc39f ACM |
1054 | if (sched_out == NULL || sched_in == NULL) |
1055 | goto out_put; | |
cdce9d73 | 1056 | |
0e9b07e5 | 1057 | out_events = thread_atoms_search(&sched->atom_root, sched_out, &sched->cmp_pid); |
39aeb52f | 1058 | if (!out_events) { |
0e9b07e5 | 1059 | if (thread_atoms_insert(sched, sched_out)) |
b91fc39f | 1060 | goto out_put; |
0e9b07e5 | 1061 | out_events = thread_atoms_search(&sched->atom_root, sched_out, &sched->cmp_pid); |
a116e05d ACM |
1062 | if (!out_events) { |
1063 | pr_err("out-event: Internal tree error"); | |
b91fc39f | 1064 | goto out_put; |
a116e05d | 1065 | } |
39aeb52f | 1066 | } |
9ec3f4e4 | 1067 | if (add_sched_out_event(out_events, sched_out_state(prev_state), timestamp)) |
a116e05d | 1068 | return -1; |
39aeb52f | 1069 | |
0e9b07e5 | 1070 | in_events = thread_atoms_search(&sched->atom_root, sched_in, &sched->cmp_pid); |
39aeb52f | 1071 | if (!in_events) { |
0e9b07e5 | 1072 | if (thread_atoms_insert(sched, sched_in)) |
b91fc39f | 1073 | goto out_put; |
0e9b07e5 | 1074 | in_events = thread_atoms_search(&sched->atom_root, sched_in, &sched->cmp_pid); |
a116e05d ACM |
1075 | if (!in_events) { |
1076 | pr_err("in-event: Internal tree error"); | |
b91fc39f | 1077 | goto out_put; |
a116e05d | 1078 | } |
39aeb52f | 1079 | /* |
1080 | * Take came in we have not heard about yet, | |
1081 | * add in an initial atom in runnable state: | |
1082 | */ | |
a116e05d | 1083 | if (add_sched_out_event(in_events, 'R', timestamp)) |
b91fc39f | 1084 | goto out_put; |
cdce9d73 | 1085 | } |
39aeb52f | 1086 | add_sched_in_event(in_events, timestamp); |
b91fc39f ACM |
1087 | err = 0; |
1088 | out_put: | |
1089 | thread__put(sched_out); | |
1090 | thread__put(sched_in); | |
1091 | return err; | |
39aeb52f | 1092 | } |
cdce9d73 | 1093 | |
9ec3f4e4 ACM |
1094 | static int latency_runtime_event(struct perf_sched *sched, |
1095 | struct perf_evsel *evsel, | |
1096 | struct perf_sample *sample, | |
1097 | struct machine *machine) | |
39aeb52f | 1098 | { |
9ec3f4e4 ACM |
1099 | const u32 pid = perf_evsel__intval(evsel, sample, "pid"); |
1100 | const u64 runtime = perf_evsel__intval(evsel, sample, "runtime"); | |
1fcb8768 | 1101 | struct thread *thread = machine__findnew_thread(machine, -1, pid); |
0e9b07e5 | 1102 | struct work_atoms *atoms = thread_atoms_search(&sched->atom_root, thread, &sched->cmp_pid); |
7f7f8d0b | 1103 | u64 timestamp = sample->time; |
b91fc39f ACM |
1104 | int cpu = sample->cpu, err = -1; |
1105 | ||
1106 | if (thread == NULL) | |
1107 | return -1; | |
39aeb52f | 1108 | |
1109 | BUG_ON(cpu >= MAX_CPUS || cpu < 0); | |
39aeb52f | 1110 | if (!atoms) { |
0e9b07e5 | 1111 | if (thread_atoms_insert(sched, thread)) |
b91fc39f | 1112 | goto out_put; |
0e9b07e5 | 1113 | atoms = thread_atoms_search(&sched->atom_root, thread, &sched->cmp_pid); |
a116e05d | 1114 | if (!atoms) { |
60b7d14a | 1115 | pr_err("in-event: Internal tree error"); |
b91fc39f | 1116 | goto out_put; |
a116e05d ACM |
1117 | } |
1118 | if (add_sched_out_event(atoms, 'R', timestamp)) | |
b91fc39f | 1119 | goto out_put; |
cdce9d73 FW |
1120 | } |
1121 | ||
9ec3f4e4 | 1122 | add_runtime_event(atoms, runtime, timestamp); |
b91fc39f ACM |
1123 | err = 0; |
1124 | out_put: | |
1125 | thread__put(thread); | |
1126 | return err; | |
cdce9d73 FW |
1127 | } |
1128 | ||
9ec3f4e4 ACM |
1129 | static int latency_wakeup_event(struct perf_sched *sched, |
1130 | struct perf_evsel *evsel, | |
1131 | struct perf_sample *sample, | |
1132 | struct machine *machine) | |
cdce9d73 | 1133 | { |
0680ee7d | 1134 | const u32 pid = perf_evsel__intval(evsel, sample, "pid"); |
39aeb52f | 1135 | struct work_atoms *atoms; |
b1ffe8f3 | 1136 | struct work_atom *atom; |
cdce9d73 | 1137 | struct thread *wakee; |
7f7f8d0b | 1138 | u64 timestamp = sample->time; |
b91fc39f | 1139 | int err = -1; |
cdce9d73 | 1140 | |
1fcb8768 | 1141 | wakee = machine__findnew_thread(machine, -1, pid); |
b91fc39f ACM |
1142 | if (wakee == NULL) |
1143 | return -1; | |
0e9b07e5 | 1144 | atoms = thread_atoms_search(&sched->atom_root, wakee, &sched->cmp_pid); |
17562205 | 1145 | if (!atoms) { |
0e9b07e5 | 1146 | if (thread_atoms_insert(sched, wakee)) |
b91fc39f | 1147 | goto out_put; |
0e9b07e5 | 1148 | atoms = thread_atoms_search(&sched->atom_root, wakee, &sched->cmp_pid); |
a116e05d | 1149 | if (!atoms) { |
60b7d14a | 1150 | pr_err("wakeup-event: Internal tree error"); |
b91fc39f | 1151 | goto out_put; |
a116e05d ACM |
1152 | } |
1153 | if (add_sched_out_event(atoms, 'S', timestamp)) | |
b91fc39f | 1154 | goto out_put; |
cdce9d73 FW |
1155 | } |
1156 | ||
39aeb52f | 1157 | BUG_ON(list_empty(&atoms->work_list)); |
cdce9d73 | 1158 | |
39aeb52f | 1159 | atom = list_entry(atoms->work_list.prev, struct work_atom, list); |
cdce9d73 | 1160 | |
55ffb7a6 | 1161 | /* |
67d6259d DY |
1162 | * As we do not guarantee the wakeup event happens when |
1163 | * task is out of run queue, also may happen when task is | |
1164 | * on run queue and wakeup only change ->state to TASK_RUNNING, | |
1165 | * then we should not set the ->wake_up_time when wake up a | |
1166 | * task which is on run queue. | |
1167 | * | |
55ffb7a6 MG |
1168 | * You WILL be missing events if you've recorded only |
1169 | * one CPU, or are only looking at only one, so don't | |
67d6259d | 1170 | * skip in this case. |
55ffb7a6 | 1171 | */ |
0e9b07e5 | 1172 | if (sched->profile_cpu == -1 && atom->state != THREAD_SLEEPING) |
b91fc39f | 1173 | goto out_ok; |
cdce9d73 | 1174 | |
0e9b07e5 | 1175 | sched->nr_timestamps++; |
ea57c4f5 | 1176 | if (atom->sched_out_time > timestamp) { |
0e9b07e5 | 1177 | sched->nr_unordered_timestamps++; |
b91fc39f | 1178 | goto out_ok; |
ea57c4f5 | 1179 | } |
aa1ab9d2 | 1180 | |
b1ffe8f3 IM |
1181 | atom->state = THREAD_WAIT_CPU; |
1182 | atom->wake_up_time = timestamp; | |
b91fc39f ACM |
1183 | out_ok: |
1184 | err = 0; | |
1185 | out_put: | |
1186 | thread__put(wakee); | |
1187 | return err; | |
cdce9d73 FW |
1188 | } |
1189 | ||
9ec3f4e4 ACM |
1190 | static int latency_migrate_task_event(struct perf_sched *sched, |
1191 | struct perf_evsel *evsel, | |
1192 | struct perf_sample *sample, | |
1193 | struct machine *machine) | |
55ffb7a6 | 1194 | { |
9ec3f4e4 | 1195 | const u32 pid = perf_evsel__intval(evsel, sample, "pid"); |
7f7f8d0b | 1196 | u64 timestamp = sample->time; |
55ffb7a6 MG |
1197 | struct work_atoms *atoms; |
1198 | struct work_atom *atom; | |
1199 | struct thread *migrant; | |
b91fc39f | 1200 | int err = -1; |
55ffb7a6 MG |
1201 | |
1202 | /* | |
1203 | * Only need to worry about migration when profiling one CPU. | |
1204 | */ | |
0e9b07e5 | 1205 | if (sched->profile_cpu == -1) |
a116e05d | 1206 | return 0; |
55ffb7a6 | 1207 | |
1fcb8768 | 1208 | migrant = machine__findnew_thread(machine, -1, pid); |
b91fc39f ACM |
1209 | if (migrant == NULL) |
1210 | return -1; | |
0e9b07e5 | 1211 | atoms = thread_atoms_search(&sched->atom_root, migrant, &sched->cmp_pid); |
55ffb7a6 | 1212 | if (!atoms) { |
0e9b07e5 | 1213 | if (thread_atoms_insert(sched, migrant)) |
b91fc39f | 1214 | goto out_put; |
b9c5143a | 1215 | register_pid(sched, migrant->tid, thread__comm_str(migrant)); |
0e9b07e5 | 1216 | atoms = thread_atoms_search(&sched->atom_root, migrant, &sched->cmp_pid); |
a116e05d | 1217 | if (!atoms) { |
60b7d14a | 1218 | pr_err("migration-event: Internal tree error"); |
b91fc39f | 1219 | goto out_put; |
a116e05d ACM |
1220 | } |
1221 | if (add_sched_out_event(atoms, 'R', timestamp)) | |
b91fc39f | 1222 | goto out_put; |
55ffb7a6 MG |
1223 | } |
1224 | ||
1225 | BUG_ON(list_empty(&atoms->work_list)); | |
1226 | ||
1227 | atom = list_entry(atoms->work_list.prev, struct work_atom, list); | |
1228 | atom->sched_in_time = atom->sched_out_time = atom->wake_up_time = timestamp; | |
1229 | ||
0e9b07e5 | 1230 | sched->nr_timestamps++; |
55ffb7a6 MG |
1231 | |
1232 | if (atom->sched_out_time > timestamp) | |
0e9b07e5 | 1233 | sched->nr_unordered_timestamps++; |
b91fc39f ACM |
1234 | err = 0; |
1235 | out_put: | |
1236 | thread__put(migrant); | |
1237 | return err; | |
55ffb7a6 MG |
1238 | } |
1239 | ||
0e9b07e5 | 1240 | static void output_lat_thread(struct perf_sched *sched, struct work_atoms *work_list) |
cdce9d73 | 1241 | { |
cdce9d73 FW |
1242 | int i; |
1243 | int ret; | |
66685678 | 1244 | u64 avg; |
99620a5d | 1245 | char max_lat_at[32]; |
cdce9d73 | 1246 | |
39aeb52f | 1247 | if (!work_list->nb_atoms) |
cdce9d73 | 1248 | return; |
ea57c4f5 IM |
1249 | /* |
1250 | * Ignore idle threads: | |
1251 | */ | |
b9c5143a | 1252 | if (!strcmp(thread__comm_str(work_list->thread), "swapper")) |
ea57c4f5 | 1253 | return; |
cdce9d73 | 1254 | |
0e9b07e5 ACM |
1255 | sched->all_runtime += work_list->total_runtime; |
1256 | sched->all_count += work_list->nb_atoms; | |
66685678 | 1257 | |
2f80dd44 JB |
1258 | if (work_list->num_merged > 1) |
1259 | ret = printf(" %s:(%d) ", thread__comm_str(work_list->thread), work_list->num_merged); | |
1260 | else | |
1261 | ret = printf(" %s:%d ", thread__comm_str(work_list->thread), work_list->thread->tid); | |
cdce9d73 | 1262 | |
08f69e6c | 1263 | for (i = 0; i < 24 - ret; i++) |
cdce9d73 FW |
1264 | printf(" "); |
1265 | ||
39aeb52f | 1266 | avg = work_list->total_lat / work_list->nb_atoms; |
99620a5d | 1267 | timestamp__scnprintf_usec(work_list->max_lat_at, max_lat_at, sizeof(max_lat_at)); |
cdce9d73 | 1268 | |
99620a5d | 1269 | printf("|%11.3f ms |%9" PRIu64 " | avg:%9.3f ms | max:%9.3f ms | max at: %13s s\n", |
4fc76e49 ACM |
1270 | (double)work_list->total_runtime / NSEC_PER_MSEC, |
1271 | work_list->nb_atoms, (double)avg / NSEC_PER_MSEC, | |
1272 | (double)work_list->max_lat / NSEC_PER_MSEC, | |
99620a5d | 1273 | max_lat_at); |
cdce9d73 FW |
1274 | } |
1275 | ||
39aeb52f | 1276 | static int pid_cmp(struct work_atoms *l, struct work_atoms *r) |
daa1d7a5 | 1277 | { |
0014de17 JO |
1278 | if (l->thread == r->thread) |
1279 | return 0; | |
38051234 | 1280 | if (l->thread->tid < r->thread->tid) |
daa1d7a5 | 1281 | return -1; |
38051234 | 1282 | if (l->thread->tid > r->thread->tid) |
daa1d7a5 | 1283 | return 1; |
0014de17 | 1284 | return (int)(l->thread - r->thread); |
daa1d7a5 FW |
1285 | } |
1286 | ||
39aeb52f | 1287 | static int avg_cmp(struct work_atoms *l, struct work_atoms *r) |
daa1d7a5 FW |
1288 | { |
1289 | u64 avgl, avgr; | |
1290 | ||
1291 | if (!l->nb_atoms) | |
1292 | return -1; | |
1293 | ||
1294 | if (!r->nb_atoms) | |
1295 | return 1; | |
1296 | ||
1297 | avgl = l->total_lat / l->nb_atoms; | |
1298 | avgr = r->total_lat / r->nb_atoms; | |
1299 | ||
1300 | if (avgl < avgr) | |
1301 | return -1; | |
1302 | if (avgl > avgr) | |
1303 | return 1; | |
1304 | ||
1305 | return 0; | |
1306 | } | |
1307 | ||
39aeb52f | 1308 | static int max_cmp(struct work_atoms *l, struct work_atoms *r) |
daa1d7a5 FW |
1309 | { |
1310 | if (l->max_lat < r->max_lat) | |
1311 | return -1; | |
1312 | if (l->max_lat > r->max_lat) | |
1313 | return 1; | |
1314 | ||
1315 | return 0; | |
1316 | } | |
1317 | ||
39aeb52f | 1318 | static int switch_cmp(struct work_atoms *l, struct work_atoms *r) |
daa1d7a5 FW |
1319 | { |
1320 | if (l->nb_atoms < r->nb_atoms) | |
1321 | return -1; | |
1322 | if (l->nb_atoms > r->nb_atoms) | |
1323 | return 1; | |
1324 | ||
1325 | return 0; | |
1326 | } | |
1327 | ||
39aeb52f | 1328 | static int runtime_cmp(struct work_atoms *l, struct work_atoms *r) |
daa1d7a5 FW |
1329 | { |
1330 | if (l->total_runtime < r->total_runtime) | |
1331 | return -1; | |
1332 | if (l->total_runtime > r->total_runtime) | |
1333 | return 1; | |
1334 | ||
1335 | return 0; | |
1336 | } | |
1337 | ||
cbef79a8 | 1338 | static int sort_dimension__add(const char *tok, struct list_head *list) |
daa1d7a5 | 1339 | { |
0e9b07e5 ACM |
1340 | size_t i; |
1341 | static struct sort_dimension avg_sort_dimension = { | |
1342 | .name = "avg", | |
1343 | .cmp = avg_cmp, | |
1344 | }; | |
1345 | static struct sort_dimension max_sort_dimension = { | |
1346 | .name = "max", | |
1347 | .cmp = max_cmp, | |
1348 | }; | |
1349 | static struct sort_dimension pid_sort_dimension = { | |
1350 | .name = "pid", | |
1351 | .cmp = pid_cmp, | |
1352 | }; | |
1353 | static struct sort_dimension runtime_sort_dimension = { | |
1354 | .name = "runtime", | |
1355 | .cmp = runtime_cmp, | |
1356 | }; | |
1357 | static struct sort_dimension switch_sort_dimension = { | |
1358 | .name = "switch", | |
1359 | .cmp = switch_cmp, | |
1360 | }; | |
1361 | struct sort_dimension *available_sorts[] = { | |
1362 | &pid_sort_dimension, | |
1363 | &avg_sort_dimension, | |
1364 | &max_sort_dimension, | |
1365 | &switch_sort_dimension, | |
1366 | &runtime_sort_dimension, | |
1367 | }; | |
daa1d7a5 | 1368 | |
0e9b07e5 | 1369 | for (i = 0; i < ARRAY_SIZE(available_sorts); i++) { |
daa1d7a5 FW |
1370 | if (!strcmp(available_sorts[i]->name, tok)) { |
1371 | list_add_tail(&available_sorts[i]->list, list); | |
1372 | ||
1373 | return 0; | |
1374 | } | |
1375 | } | |
1376 | ||
1377 | return -1; | |
1378 | } | |
1379 | ||
0e9b07e5 | 1380 | static void perf_sched__sort_lat(struct perf_sched *sched) |
daa1d7a5 FW |
1381 | { |
1382 | struct rb_node *node; | |
2f80dd44 JB |
1383 | struct rb_root *root = &sched->atom_root; |
1384 | again: | |
daa1d7a5 | 1385 | for (;;) { |
39aeb52f | 1386 | struct work_atoms *data; |
2f80dd44 | 1387 | node = rb_first(root); |
daa1d7a5 FW |
1388 | if (!node) |
1389 | break; | |
1390 | ||
2f80dd44 | 1391 | rb_erase(node, root); |
39aeb52f | 1392 | data = rb_entry(node, struct work_atoms, node); |
0e9b07e5 | 1393 | __thread_latency_insert(&sched->sorted_atom_root, data, &sched->sort_list); |
daa1d7a5 | 1394 | } |
2f80dd44 JB |
1395 | if (root == &sched->atom_root) { |
1396 | root = &sched->merged_atom_root; | |
1397 | goto again; | |
1398 | } | |
daa1d7a5 FW |
1399 | } |
1400 | ||
0e9b07e5 | 1401 | static int process_sched_wakeup_event(struct perf_tool *tool, |
2b7fcbc5 | 1402 | struct perf_evsel *evsel, |
1d037ca1 | 1403 | struct perf_sample *sample, |
4218e673 | 1404 | struct machine *machine) |
419ab0d6 | 1405 | { |
0e9b07e5 | 1406 | struct perf_sched *sched = container_of(tool, struct perf_sched, tool); |
419ab0d6 | 1407 | |
9ec3f4e4 ACM |
1408 | if (sched->tp_handler->wakeup_event) |
1409 | return sched->tp_handler->wakeup_event(sched, evsel, sample, machine); | |
a116e05d | 1410 | |
2b7fcbc5 | 1411 | return 0; |
419ab0d6 FW |
1412 | } |
1413 | ||
a151a37a JO |
1414 | union map_priv { |
1415 | void *ptr; | |
1416 | bool color; | |
1417 | }; | |
1418 | ||
1419 | static bool thread__has_color(struct thread *thread) | |
1420 | { | |
1421 | union map_priv priv = { | |
1422 | .ptr = thread__priv(thread), | |
1423 | }; | |
1424 | ||
1425 | return priv.color; | |
1426 | } | |
1427 | ||
1428 | static struct thread* | |
1429 | map__findnew_thread(struct perf_sched *sched, struct machine *machine, pid_t pid, pid_t tid) | |
1430 | { | |
1431 | struct thread *thread = machine__findnew_thread(machine, pid, tid); | |
1432 | union map_priv priv = { | |
1433 | .color = false, | |
1434 | }; | |
1435 | ||
1436 | if (!sched->map.color_pids || !thread || thread__priv(thread)) | |
1437 | return thread; | |
1438 | ||
1439 | if (thread_map__has(sched->map.color_pids, tid)) | |
1440 | priv.color = true; | |
1441 | ||
1442 | thread__set_priv(thread, priv.ptr); | |
1443 | return thread; | |
1444 | } | |
1445 | ||
9ec3f4e4 ACM |
1446 | static int map_switch_event(struct perf_sched *sched, struct perf_evsel *evsel, |
1447 | struct perf_sample *sample, struct machine *machine) | |
0ec04e16 | 1448 | { |
9d372ca5 DY |
1449 | const u32 next_pid = perf_evsel__intval(evsel, sample, "next_pid"); |
1450 | struct thread *sched_in; | |
0ec04e16 | 1451 | int new_shortname; |
7f7f8d0b | 1452 | u64 timestamp0, timestamp = sample->time; |
0ec04e16 | 1453 | s64 delta; |
99623c62 JO |
1454 | int i, this_cpu = sample->cpu; |
1455 | int cpus_nr; | |
1456 | bool new_cpu = false; | |
8cd91195 | 1457 | const char *color = PERF_COLOR_NORMAL; |
99620a5d | 1458 | char stimestamp[32]; |
0ec04e16 IM |
1459 | |
1460 | BUG_ON(this_cpu >= MAX_CPUS || this_cpu < 0); | |
1461 | ||
0e9b07e5 ACM |
1462 | if (this_cpu > sched->max_cpu) |
1463 | sched->max_cpu = this_cpu; | |
0ec04e16 | 1464 | |
99623c62 JO |
1465 | if (sched->map.comp) { |
1466 | cpus_nr = bitmap_weight(sched->map.comp_cpus_mask, MAX_CPUS); | |
1467 | if (!test_and_set_bit(this_cpu, sched->map.comp_cpus_mask)) { | |
1468 | sched->map.comp_cpus[cpus_nr++] = this_cpu; | |
1469 | new_cpu = true; | |
1470 | } | |
1471 | } else | |
1472 | cpus_nr = sched->max_cpu; | |
1473 | ||
0e9b07e5 ACM |
1474 | timestamp0 = sched->cpu_last_switched[this_cpu]; |
1475 | sched->cpu_last_switched[this_cpu] = timestamp; | |
0ec04e16 IM |
1476 | if (timestamp0) |
1477 | delta = timestamp - timestamp0; | |
1478 | else | |
1479 | delta = 0; | |
1480 | ||
a116e05d | 1481 | if (delta < 0) { |
60b7d14a | 1482 | pr_err("hm, delta: %" PRIu64 " < 0 ?\n", delta); |
a116e05d ACM |
1483 | return -1; |
1484 | } | |
0ec04e16 | 1485 | |
a151a37a | 1486 | sched_in = map__findnew_thread(sched, machine, -1, next_pid); |
b91fc39f ACM |
1487 | if (sched_in == NULL) |
1488 | return -1; | |
0ec04e16 | 1489 | |
b91fc39f | 1490 | sched->curr_thread[this_cpu] = thread__get(sched_in); |
0ec04e16 IM |
1491 | |
1492 | printf(" "); | |
1493 | ||
1494 | new_shortname = 0; | |
1495 | if (!sched_in->shortname[0]) { | |
6bcab4e1 D |
1496 | if (!strcmp(thread__comm_str(sched_in), "swapper")) { |
1497 | /* | |
1498 | * Don't allocate a letter-number for swapper:0 | |
1499 | * as a shortname. Instead, we use '.' for it. | |
1500 | */ | |
1501 | sched_in->shortname[0] = '.'; | |
1502 | sched_in->shortname[1] = ' '; | |
0ec04e16 | 1503 | } else { |
6bcab4e1 D |
1504 | sched_in->shortname[0] = sched->next_shortname1; |
1505 | sched_in->shortname[1] = sched->next_shortname2; | |
1506 | ||
1507 | if (sched->next_shortname1 < 'Z') { | |
1508 | sched->next_shortname1++; | |
0ec04e16 | 1509 | } else { |
6bcab4e1 D |
1510 | sched->next_shortname1 = 'A'; |
1511 | if (sched->next_shortname2 < '9') | |
1512 | sched->next_shortname2++; | |
1513 | else | |
1514 | sched->next_shortname2 = '0'; | |
0ec04e16 IM |
1515 | } |
1516 | } | |
1517 | new_shortname = 1; | |
1518 | } | |
1519 | ||
99623c62 JO |
1520 | for (i = 0; i < cpus_nr; i++) { |
1521 | int cpu = sched->map.comp ? sched->map.comp_cpus[i] : i; | |
a151a37a JO |
1522 | struct thread *curr_thread = sched->curr_thread[cpu]; |
1523 | const char *pid_color = color; | |
cf294f24 | 1524 | const char *cpu_color = color; |
a151a37a JO |
1525 | |
1526 | if (curr_thread && thread__has_color(curr_thread)) | |
1527 | pid_color = COLOR_PIDS; | |
99623c62 | 1528 | |
73643bb6 JO |
1529 | if (sched->map.cpus && !cpu_map__has(sched->map.cpus, cpu)) |
1530 | continue; | |
1531 | ||
cf294f24 JO |
1532 | if (sched->map.color_cpus && cpu_map__has(sched->map.color_cpus, cpu)) |
1533 | cpu_color = COLOR_CPUS; | |
1534 | ||
0ec04e16 | 1535 | if (cpu != this_cpu) |
1208bb27 | 1536 | color_fprintf(stdout, color, " "); |
0ec04e16 | 1537 | else |
cf294f24 | 1538 | color_fprintf(stdout, cpu_color, "*"); |
0ec04e16 | 1539 | |
6bcab4e1 | 1540 | if (sched->curr_thread[cpu]) |
a151a37a | 1541 | color_fprintf(stdout, pid_color, "%2s ", sched->curr_thread[cpu]->shortname); |
6bcab4e1 | 1542 | else |
8cd91195 | 1543 | color_fprintf(stdout, color, " "); |
0ec04e16 IM |
1544 | } |
1545 | ||
73643bb6 JO |
1546 | if (sched->map.cpus && !cpu_map__has(sched->map.cpus, this_cpu)) |
1547 | goto out; | |
1548 | ||
99620a5d NK |
1549 | timestamp__scnprintf_usec(timestamp, stimestamp, sizeof(stimestamp)); |
1550 | color_fprintf(stdout, color, " %12s secs ", stimestamp); | |
e107f129 | 1551 | if (new_shortname || (verbose && sched_in->tid)) { |
a151a37a JO |
1552 | const char *pid_color = color; |
1553 | ||
1554 | if (thread__has_color(sched_in)) | |
1555 | pid_color = COLOR_PIDS; | |
1556 | ||
1557 | color_fprintf(stdout, pid_color, "%s => %s:%d", | |
b9c5143a | 1558 | sched_in->shortname, thread__comm_str(sched_in), sched_in->tid); |
0ec04e16 | 1559 | } |
a116e05d | 1560 | |
99623c62 | 1561 | if (sched->map.comp && new_cpu) |
8cd91195 | 1562 | color_fprintf(stdout, color, " (CPU %d)", this_cpu); |
99623c62 | 1563 | |
73643bb6 | 1564 | out: |
8cd91195 | 1565 | color_fprintf(stdout, color, "\n"); |
99623c62 | 1566 | |
b91fc39f ACM |
1567 | thread__put(sched_in); |
1568 | ||
a116e05d | 1569 | return 0; |
0ec04e16 IM |
1570 | } |
1571 | ||
0e9b07e5 | 1572 | static int process_sched_switch_event(struct perf_tool *tool, |
2b7fcbc5 | 1573 | struct perf_evsel *evsel, |
1d037ca1 | 1574 | struct perf_sample *sample, |
4218e673 | 1575 | struct machine *machine) |
419ab0d6 | 1576 | { |
0e9b07e5 | 1577 | struct perf_sched *sched = container_of(tool, struct perf_sched, tool); |
a116e05d | 1578 | int this_cpu = sample->cpu, err = 0; |
2b7fcbc5 ACM |
1579 | u32 prev_pid = perf_evsel__intval(evsel, sample, "prev_pid"), |
1580 | next_pid = perf_evsel__intval(evsel, sample, "next_pid"); | |
419ab0d6 | 1581 | |
0e9b07e5 | 1582 | if (sched->curr_pid[this_cpu] != (u32)-1) { |
c8a37751 IM |
1583 | /* |
1584 | * Are we trying to switch away a PID that is | |
1585 | * not current? | |
1586 | */ | |
2b7fcbc5 | 1587 | if (sched->curr_pid[this_cpu] != prev_pid) |
0e9b07e5 | 1588 | sched->nr_context_switch_bugs++; |
c8a37751 | 1589 | } |
c8a37751 | 1590 | |
9ec3f4e4 ACM |
1591 | if (sched->tp_handler->switch_event) |
1592 | err = sched->tp_handler->switch_event(sched, evsel, sample, machine); | |
2b7fcbc5 ACM |
1593 | |
1594 | sched->curr_pid[this_cpu] = next_pid; | |
a116e05d | 1595 | return err; |
419ab0d6 FW |
1596 | } |
1597 | ||
0e9b07e5 | 1598 | static int process_sched_runtime_event(struct perf_tool *tool, |
2b7fcbc5 | 1599 | struct perf_evsel *evsel, |
1d037ca1 | 1600 | struct perf_sample *sample, |
4218e673 | 1601 | struct machine *machine) |
39aeb52f | 1602 | { |
0e9b07e5 | 1603 | struct perf_sched *sched = container_of(tool, struct perf_sched, tool); |
39aeb52f | 1604 | |
9ec3f4e4 ACM |
1605 | if (sched->tp_handler->runtime_event) |
1606 | return sched->tp_handler->runtime_event(sched, evsel, sample, machine); | |
a116e05d | 1607 | |
2b7fcbc5 | 1608 | return 0; |
39aeb52f | 1609 | } |
1610 | ||
cb627505 DA |
1611 | static int perf_sched__process_fork_event(struct perf_tool *tool, |
1612 | union perf_event *event, | |
1613 | struct perf_sample *sample, | |
1614 | struct machine *machine) | |
fbf94829 | 1615 | { |
0e9b07e5 | 1616 | struct perf_sched *sched = container_of(tool, struct perf_sched, tool); |
46538818 | 1617 | |
cb627505 DA |
1618 | /* run the fork event through the perf machineruy */ |
1619 | perf_event__process_fork(tool, event, sample, machine); | |
1620 | ||
1621 | /* and then run additional processing needed for this command */ | |
9ec3f4e4 | 1622 | if (sched->tp_handler->fork_event) |
cb627505 | 1623 | return sched->tp_handler->fork_event(sched, event, machine); |
a116e05d | 1624 | |
2b7fcbc5 | 1625 | return 0; |
fbf94829 IM |
1626 | } |
1627 | ||
0e9b07e5 | 1628 | static int process_sched_migrate_task_event(struct perf_tool *tool, |
2b7fcbc5 | 1629 | struct perf_evsel *evsel, |
1d037ca1 | 1630 | struct perf_sample *sample, |
4218e673 | 1631 | struct machine *machine) |
55ffb7a6 | 1632 | { |
0e9b07e5 | 1633 | struct perf_sched *sched = container_of(tool, struct perf_sched, tool); |
55ffb7a6 | 1634 | |
9ec3f4e4 ACM |
1635 | if (sched->tp_handler->migrate_task_event) |
1636 | return sched->tp_handler->migrate_task_event(sched, evsel, sample, machine); | |
a116e05d | 1637 | |
2b7fcbc5 | 1638 | return 0; |
55ffb7a6 MG |
1639 | } |
1640 | ||
a116e05d | 1641 | typedef int (*tracepoint_handler)(struct perf_tool *tool, |
2b7fcbc5 | 1642 | struct perf_evsel *evsel, |
a116e05d | 1643 | struct perf_sample *sample, |
4218e673 | 1644 | struct machine *machine); |
ec156764 | 1645 | |
1d037ca1 IT |
1646 | static int perf_sched__process_tracepoint_sample(struct perf_tool *tool __maybe_unused, |
1647 | union perf_event *event __maybe_unused, | |
ee29be62 ACM |
1648 | struct perf_sample *sample, |
1649 | struct perf_evsel *evsel, | |
1650 | struct machine *machine) | |
0a02ad93 | 1651 | { |
a116e05d | 1652 | int err = 0; |
0a02ad93 | 1653 | |
744a9719 ACM |
1654 | if (evsel->handler != NULL) { |
1655 | tracepoint_handler f = evsel->handler; | |
2b7fcbc5 | 1656 | err = f(tool, evsel, sample, machine); |
ee29be62 | 1657 | } |
0a02ad93 | 1658 | |
a116e05d | 1659 | return err; |
0a02ad93 IM |
1660 | } |
1661 | ||
ae536acf | 1662 | static int perf_sched__read_events(struct perf_sched *sched) |
0a02ad93 | 1663 | { |
ee29be62 ACM |
1664 | const struct perf_evsel_str_handler handlers[] = { |
1665 | { "sched:sched_switch", process_sched_switch_event, }, | |
1666 | { "sched:sched_stat_runtime", process_sched_runtime_event, }, | |
1667 | { "sched:sched_wakeup", process_sched_wakeup_event, }, | |
1668 | { "sched:sched_wakeup_new", process_sched_wakeup_event, }, | |
ee29be62 ACM |
1669 | { "sched:sched_migrate_task", process_sched_migrate_task_event, }, |
1670 | }; | |
da378962 | 1671 | struct perf_session *session; |
f5fc1412 JO |
1672 | struct perf_data_file file = { |
1673 | .path = input_name, | |
1674 | .mode = PERF_DATA_MODE_READ, | |
f0dd330f | 1675 | .force = sched->force, |
f5fc1412 | 1676 | }; |
ae536acf | 1677 | int rc = -1; |
da378962 | 1678 | |
f5fc1412 | 1679 | session = perf_session__new(&file, false, &sched->tool); |
a116e05d ACM |
1680 | if (session == NULL) { |
1681 | pr_debug("No Memory for session\n"); | |
1682 | return -1; | |
1683 | } | |
94c744b6 | 1684 | |
0a7e6d1b | 1685 | symbol__init(&session->header.env); |
04934106 | 1686 | |
a116e05d ACM |
1687 | if (perf_session__set_tracepoints_handlers(session, handlers)) |
1688 | goto out_delete; | |
ee29be62 | 1689 | |
cee75ac7 | 1690 | if (perf_session__has_traces(session, "record -R")) { |
b7b61cbe | 1691 | int err = perf_session__process_events(session); |
a116e05d ACM |
1692 | if (err) { |
1693 | pr_err("Failed to process events, error %d", err); | |
1694 | goto out_delete; | |
1695 | } | |
4c09bafa | 1696 | |
75be989a ACM |
1697 | sched->nr_events = session->evlist->stats.nr_events[0]; |
1698 | sched->nr_lost_events = session->evlist->stats.total_lost; | |
1699 | sched->nr_lost_chunks = session->evlist->stats.nr_events[PERF_RECORD_LOST]; | |
cee75ac7 | 1700 | } |
d549c769 | 1701 | |
ae536acf | 1702 | rc = 0; |
a116e05d ACM |
1703 | out_delete: |
1704 | perf_session__delete(session); | |
ae536acf | 1705 | return rc; |
0a02ad93 IM |
1706 | } |
1707 | ||
49394a2a DA |
1708 | /* |
1709 | * scheduling times are printed as msec.usec | |
1710 | */ | |
1711 | static inline void print_sched_time(unsigned long long nsecs, int width) | |
1712 | { | |
1713 | unsigned long msecs; | |
1714 | unsigned long usecs; | |
1715 | ||
1716 | msecs = nsecs / NSEC_PER_MSEC; | |
1717 | nsecs -= msecs * NSEC_PER_MSEC; | |
1718 | usecs = nsecs / NSEC_PER_USEC; | |
1719 | printf("%*lu.%03lu ", width, msecs, usecs); | |
1720 | } | |
1721 | ||
1722 | /* | |
1723 | * returns runtime data for event, allocating memory for it the | |
1724 | * first time it is used. | |
1725 | */ | |
1726 | static struct evsel_runtime *perf_evsel__get_runtime(struct perf_evsel *evsel) | |
1727 | { | |
1728 | struct evsel_runtime *r = evsel->priv; | |
1729 | ||
1730 | if (r == NULL) { | |
1731 | r = zalloc(sizeof(struct evsel_runtime)); | |
1732 | evsel->priv = r; | |
1733 | } | |
1734 | ||
1735 | return r; | |
1736 | } | |
1737 | ||
1738 | /* | |
1739 | * save last time event was seen per cpu | |
1740 | */ | |
1741 | static void perf_evsel__save_time(struct perf_evsel *evsel, | |
1742 | u64 timestamp, u32 cpu) | |
1743 | { | |
1744 | struct evsel_runtime *r = perf_evsel__get_runtime(evsel); | |
1745 | ||
1746 | if (r == NULL) | |
1747 | return; | |
1748 | ||
1749 | if ((cpu >= r->ncpu) || (r->last_time == NULL)) { | |
1750 | int i, n = __roundup_pow_of_two(cpu+1); | |
1751 | void *p = r->last_time; | |
1752 | ||
1753 | p = realloc(r->last_time, n * sizeof(u64)); | |
1754 | if (!p) | |
1755 | return; | |
1756 | ||
1757 | r->last_time = p; | |
1758 | for (i = r->ncpu; i < n; ++i) | |
1759 | r->last_time[i] = (u64) 0; | |
1760 | ||
1761 | r->ncpu = n; | |
1762 | } | |
1763 | ||
1764 | r->last_time[cpu] = timestamp; | |
1765 | } | |
1766 | ||
1767 | /* returns last time this event was seen on the given cpu */ | |
1768 | static u64 perf_evsel__get_time(struct perf_evsel *evsel, u32 cpu) | |
1769 | { | |
1770 | struct evsel_runtime *r = perf_evsel__get_runtime(evsel); | |
1771 | ||
1772 | if ((r == NULL) || (r->last_time == NULL) || (cpu >= r->ncpu)) | |
1773 | return 0; | |
1774 | ||
1775 | return r->last_time[cpu]; | |
1776 | } | |
1777 | ||
9b8087d7 | 1778 | static int comm_width = 30; |
49394a2a DA |
1779 | |
1780 | static char *timehist_get_commstr(struct thread *thread) | |
1781 | { | |
1782 | static char str[32]; | |
1783 | const char *comm = thread__comm_str(thread); | |
1784 | pid_t tid = thread->tid; | |
1785 | pid_t pid = thread->pid_; | |
1786 | int n; | |
1787 | ||
1788 | if (pid == 0) | |
1789 | n = scnprintf(str, sizeof(str), "%s", comm); | |
1790 | ||
1791 | else if (tid != pid) | |
1792 | n = scnprintf(str, sizeof(str), "%s[%d/%d]", comm, tid, pid); | |
1793 | ||
1794 | else | |
1795 | n = scnprintf(str, sizeof(str), "%s[%d]", comm, tid); | |
1796 | ||
1797 | if (n > comm_width) | |
1798 | comm_width = n; | |
1799 | ||
1800 | return str; | |
1801 | } | |
1802 | ||
a407b067 | 1803 | static void timehist_header(struct perf_sched *sched) |
49394a2a | 1804 | { |
a407b067 DA |
1805 | u32 ncpus = sched->max_cpu + 1; |
1806 | u32 i, j; | |
1807 | ||
49394a2a DA |
1808 | printf("%15s %6s ", "time", "cpu"); |
1809 | ||
a407b067 DA |
1810 | if (sched->show_cpu_visual) { |
1811 | printf(" "); | |
1812 | for (i = 0, j = 0; i < ncpus; ++i) { | |
1813 | printf("%x", j++); | |
1814 | if (j > 15) | |
1815 | j = 0; | |
1816 | } | |
1817 | printf(" "); | |
1818 | } | |
1819 | ||
0e6758e8 | 1820 | printf(" %-*s %9s %9s %9s", comm_width, |
49394a2a DA |
1821 | "task name", "wait time", "sch delay", "run time"); |
1822 | ||
1823 | printf("\n"); | |
1824 | ||
1825 | /* | |
1826 | * units row | |
1827 | */ | |
1828 | printf("%15s %-6s ", "", ""); | |
1829 | ||
a407b067 DA |
1830 | if (sched->show_cpu_visual) |
1831 | printf(" %*s ", ncpus, ""); | |
1832 | ||
0e6758e8 NK |
1833 | printf(" %-*s %9s %9s %9s\n", comm_width, |
1834 | "[tid/pid]", "(msec)", "(msec)", "(msec)"); | |
49394a2a DA |
1835 | |
1836 | /* | |
1837 | * separator | |
1838 | */ | |
1839 | printf("%.15s %.6s ", graph_dotted_line, graph_dotted_line); | |
1840 | ||
a407b067 DA |
1841 | if (sched->show_cpu_visual) |
1842 | printf(" %.*s ", ncpus, graph_dotted_line); | |
1843 | ||
0e6758e8 | 1844 | printf(" %.*s %.9s %.9s %.9s", comm_width, |
49394a2a DA |
1845 | graph_dotted_line, graph_dotted_line, graph_dotted_line, |
1846 | graph_dotted_line); | |
1847 | ||
1848 | printf("\n"); | |
1849 | } | |
1850 | ||
fc1469f1 DA |
1851 | static void timehist_print_sample(struct perf_sched *sched, |
1852 | struct perf_sample *sample, | |
6c973c90 | 1853 | struct addr_location *al, |
853b7407 DA |
1854 | struct thread *thread, |
1855 | u64 t) | |
49394a2a DA |
1856 | { |
1857 | struct thread_runtime *tr = thread__priv(thread); | |
a407b067 | 1858 | u32 max_cpus = sched->max_cpu + 1; |
49394a2a DA |
1859 | char tstr[64]; |
1860 | ||
853b7407 | 1861 | timestamp__scnprintf_usec(t, tstr, sizeof(tstr)); |
49394a2a DA |
1862 | printf("%15s [%04d] ", tstr, sample->cpu); |
1863 | ||
a407b067 DA |
1864 | if (sched->show_cpu_visual) { |
1865 | u32 i; | |
1866 | char c; | |
1867 | ||
1868 | printf(" "); | |
1869 | for (i = 0; i < max_cpus; ++i) { | |
1870 | /* flag idle times with 'i'; others are sched events */ | |
1871 | if (i == sample->cpu) | |
1872 | c = (thread->tid == 0) ? 'i' : 's'; | |
1873 | else | |
1874 | c = ' '; | |
1875 | printf("%c", c); | |
1876 | } | |
1877 | printf(" "); | |
1878 | } | |
1879 | ||
49394a2a DA |
1880 | printf(" %-*s ", comm_width, timehist_get_commstr(thread)); |
1881 | ||
1882 | print_sched_time(tr->dt_wait, 6); | |
1883 | print_sched_time(tr->dt_delay, 6); | |
1884 | print_sched_time(tr->dt_run, 6); | |
fc1469f1 DA |
1885 | |
1886 | if (sched->show_wakeups) | |
1887 | printf(" %-*s", comm_width, ""); | |
1888 | ||
6c973c90 DA |
1889 | if (thread->tid == 0) |
1890 | goto out; | |
1891 | ||
1892 | if (sched->show_callchain) | |
1893 | printf(" "); | |
1894 | ||
1895 | sample__fprintf_sym(sample, al, 0, | |
1896 | EVSEL__PRINT_SYM | EVSEL__PRINT_ONELINE | | |
2d9bbf6e NK |
1897 | EVSEL__PRINT_CALLCHAIN_ARROW | |
1898 | EVSEL__PRINT_SKIP_IGNORED, | |
6c973c90 DA |
1899 | &callchain_cursor, stdout); |
1900 | ||
1901 | out: | |
49394a2a DA |
1902 | printf("\n"); |
1903 | } | |
1904 | ||
1905 | /* | |
1906 | * Explanation of delta-time stats: | |
1907 | * | |
1908 | * t = time of current schedule out event | |
1909 | * tprev = time of previous sched out event | |
1910 | * also time of schedule-in event for current task | |
1911 | * last_time = time of last sched change event for current task | |
1912 | * (i.e, time process was last scheduled out) | |
1913 | * ready_to_run = time of wakeup for current task | |
1914 | * | |
1915 | * -----|------------|------------|------------|------ | |
1916 | * last ready tprev t | |
1917 | * time to run | |
1918 | * | |
1919 | * |-------- dt_wait --------| | |
1920 | * |- dt_delay -|-- dt_run --| | |
1921 | * | |
1922 | * dt_run = run time of current task | |
1923 | * dt_wait = time between last schedule out event for task and tprev | |
1924 | * represents time spent off the cpu | |
1925 | * dt_delay = time between wakeup and schedule-in of task | |
1926 | */ | |
1927 | ||
1928 | static void timehist_update_runtime_stats(struct thread_runtime *r, | |
1929 | u64 t, u64 tprev) | |
1930 | { | |
1931 | r->dt_delay = 0; | |
1932 | r->dt_wait = 0; | |
1933 | r->dt_run = 0; | |
1934 | if (tprev) { | |
1935 | r->dt_run = t - tprev; | |
1936 | if (r->ready_to_run) { | |
1937 | if (r->ready_to_run > tprev) | |
1938 | pr_debug("time travel: wakeup time for task > previous sched_switch event\n"); | |
1939 | else | |
1940 | r->dt_delay = tprev - r->ready_to_run; | |
1941 | } | |
1942 | ||
1943 | if (r->last_time > tprev) | |
1944 | pr_debug("time travel: last sched out time for task > previous sched_switch event\n"); | |
1945 | else if (r->last_time) | |
1946 | r->dt_wait = tprev - r->last_time; | |
1947 | } | |
1948 | ||
1949 | update_stats(&r->run_stats, r->dt_run); | |
1950 | r->total_run_time += r->dt_run; | |
1951 | } | |
1952 | ||
96039c7c NK |
1953 | static bool is_idle_sample(struct perf_sample *sample, |
1954 | struct perf_evsel *evsel) | |
49394a2a DA |
1955 | { |
1956 | /* pid 0 == swapper == idle task */ | |
96039c7c NK |
1957 | if (strcmp(perf_evsel__name(evsel), "sched:sched_switch") == 0) |
1958 | return perf_evsel__intval(evsel, sample, "prev_pid") == 0; | |
49394a2a | 1959 | |
96039c7c NK |
1960 | return sample->pid == 0; |
1961 | } | |
1962 | ||
1963 | static void save_task_callchain(struct perf_sched *sched, | |
1964 | struct perf_sample *sample, | |
1965 | struct perf_evsel *evsel, | |
1966 | struct machine *machine) | |
1967 | { | |
1968 | struct callchain_cursor *cursor = &callchain_cursor; | |
1969 | struct thread *thread; | |
6c973c90 DA |
1970 | |
1971 | /* want main thread for process - has maps */ | |
1972 | thread = machine__findnew_thread(machine, sample->pid, sample->pid); | |
1973 | if (thread == NULL) { | |
1974 | pr_debug("Failed to get thread for pid %d.\n", sample->pid); | |
96039c7c | 1975 | return; |
6c973c90 DA |
1976 | } |
1977 | ||
1978 | if (!symbol_conf.use_callchain || sample->callchain == NULL) | |
96039c7c | 1979 | return; |
6c973c90 DA |
1980 | |
1981 | if (thread__resolve_callchain(thread, cursor, evsel, sample, | |
8388deb3 | 1982 | NULL, NULL, sched->max_stack + 2) != 0) { |
6c973c90 DA |
1983 | if (verbose) |
1984 | error("Failed to resolve callchain. Skipping\n"); | |
1985 | ||
96039c7c | 1986 | return; |
6c973c90 | 1987 | } |
cdeb01bf | 1988 | |
6c973c90 | 1989 | callchain_cursor_commit(cursor); |
cdeb01bf NK |
1990 | |
1991 | while (true) { | |
1992 | struct callchain_cursor_node *node; | |
1993 | struct symbol *sym; | |
1994 | ||
1995 | node = callchain_cursor_current(cursor); | |
1996 | if (node == NULL) | |
1997 | break; | |
1998 | ||
1999 | sym = node->sym; | |
2000 | if (sym && sym->name) { | |
2001 | if (!strcmp(sym->name, "schedule") || | |
2002 | !strcmp(sym->name, "__schedule") || | |
2003 | !strcmp(sym->name, "preempt_schedule")) | |
2004 | sym->ignore = 1; | |
2005 | } | |
2006 | ||
2007 | callchain_cursor_advance(cursor); | |
2008 | } | |
49394a2a DA |
2009 | } |
2010 | ||
3bc2fa9c NK |
2011 | static int init_idle_thread(struct thread *thread) |
2012 | { | |
2013 | struct idle_thread_runtime *itr; | |
2014 | ||
2015 | thread__set_comm(thread, idle_comm, 0); | |
2016 | ||
2017 | itr = zalloc(sizeof(*itr)); | |
2018 | if (itr == NULL) | |
2019 | return -ENOMEM; | |
2020 | ||
2021 | init_stats(&itr->tr.run_stats); | |
2022 | callchain_init(&itr->callchain); | |
2023 | callchain_cursor_reset(&itr->cursor); | |
2024 | thread__set_priv(thread, itr); | |
2025 | ||
2026 | return 0; | |
2027 | } | |
2028 | ||
49394a2a DA |
2029 | /* |
2030 | * Track idle stats per cpu by maintaining a local thread | |
2031 | * struct for the idle task on each cpu. | |
2032 | */ | |
2033 | static int init_idle_threads(int ncpu) | |
2034 | { | |
3bc2fa9c | 2035 | int i, ret; |
49394a2a DA |
2036 | |
2037 | idle_threads = zalloc(ncpu * sizeof(struct thread *)); | |
2038 | if (!idle_threads) | |
2039 | return -ENOMEM; | |
2040 | ||
b336352b | 2041 | idle_max_cpu = ncpu; |
49394a2a DA |
2042 | |
2043 | /* allocate the actual thread struct if needed */ | |
2044 | for (i = 0; i < ncpu; ++i) { | |
2045 | idle_threads[i] = thread__new(0, 0); | |
2046 | if (idle_threads[i] == NULL) | |
2047 | return -ENOMEM; | |
2048 | ||
3bc2fa9c NK |
2049 | ret = init_idle_thread(idle_threads[i]); |
2050 | if (ret < 0) | |
2051 | return ret; | |
49394a2a DA |
2052 | } |
2053 | ||
2054 | return 0; | |
2055 | } | |
2056 | ||
2057 | static void free_idle_threads(void) | |
2058 | { | |
2059 | int i; | |
2060 | ||
2061 | if (idle_threads == NULL) | |
2062 | return; | |
2063 | ||
b336352b | 2064 | for (i = 0; i < idle_max_cpu; ++i) { |
49394a2a DA |
2065 | if ((idle_threads[i])) |
2066 | thread__delete(idle_threads[i]); | |
2067 | } | |
2068 | ||
2069 | free(idle_threads); | |
2070 | } | |
2071 | ||
2072 | static struct thread *get_idle_thread(int cpu) | |
2073 | { | |
2074 | /* | |
2075 | * expand/allocate array of pointers to local thread | |
2076 | * structs if needed | |
2077 | */ | |
2078 | if ((cpu >= idle_max_cpu) || (idle_threads == NULL)) { | |
2079 | int i, j = __roundup_pow_of_two(cpu+1); | |
2080 | void *p; | |
2081 | ||
2082 | p = realloc(idle_threads, j * sizeof(struct thread *)); | |
2083 | if (!p) | |
2084 | return NULL; | |
2085 | ||
2086 | idle_threads = (struct thread **) p; | |
b336352b | 2087 | for (i = idle_max_cpu; i < j; ++i) |
49394a2a DA |
2088 | idle_threads[i] = NULL; |
2089 | ||
2090 | idle_max_cpu = j; | |
2091 | } | |
2092 | ||
2093 | /* allocate a new thread struct if needed */ | |
2094 | if (idle_threads[cpu] == NULL) { | |
2095 | idle_threads[cpu] = thread__new(0, 0); | |
2096 | ||
2097 | if (idle_threads[cpu]) { | |
3bc2fa9c NK |
2098 | if (init_idle_thread(idle_threads[cpu]) < 0) |
2099 | return NULL; | |
49394a2a DA |
2100 | } |
2101 | } | |
2102 | ||
2103 | return idle_threads[cpu]; | |
2104 | } | |
2105 | ||
699b5b92 NK |
2106 | static void save_idle_callchain(struct idle_thread_runtime *itr, |
2107 | struct perf_sample *sample) | |
2108 | { | |
2109 | if (!symbol_conf.use_callchain || sample->callchain == NULL) | |
2110 | return; | |
2111 | ||
2112 | callchain_cursor__copy(&itr->cursor, &callchain_cursor); | |
2113 | } | |
2114 | ||
49394a2a DA |
2115 | /* |
2116 | * handle runtime stats saved per thread | |
2117 | */ | |
2118 | static struct thread_runtime *thread__init_runtime(struct thread *thread) | |
2119 | { | |
2120 | struct thread_runtime *r; | |
2121 | ||
2122 | r = zalloc(sizeof(struct thread_runtime)); | |
2123 | if (!r) | |
2124 | return NULL; | |
2125 | ||
2126 | init_stats(&r->run_stats); | |
2127 | thread__set_priv(thread, r); | |
2128 | ||
2129 | return r; | |
2130 | } | |
2131 | ||
2132 | static struct thread_runtime *thread__get_runtime(struct thread *thread) | |
2133 | { | |
2134 | struct thread_runtime *tr; | |
2135 | ||
2136 | tr = thread__priv(thread); | |
2137 | if (tr == NULL) { | |
2138 | tr = thread__init_runtime(thread); | |
2139 | if (tr == NULL) | |
2140 | pr_debug("Failed to malloc memory for runtime data.\n"); | |
2141 | } | |
2142 | ||
2143 | return tr; | |
2144 | } | |
2145 | ||
6c973c90 DA |
2146 | static struct thread *timehist_get_thread(struct perf_sched *sched, |
2147 | struct perf_sample *sample, | |
49394a2a DA |
2148 | struct machine *machine, |
2149 | struct perf_evsel *evsel) | |
2150 | { | |
2151 | struct thread *thread; | |
2152 | ||
96039c7c | 2153 | if (is_idle_sample(sample, evsel)) { |
49394a2a DA |
2154 | thread = get_idle_thread(sample->cpu); |
2155 | if (thread == NULL) | |
2156 | pr_err("Failed to get idle thread for cpu %d.\n", sample->cpu); | |
2157 | ||
2158 | } else { | |
5d92d96a NK |
2159 | /* there were samples with tid 0 but non-zero pid */ |
2160 | thread = machine__findnew_thread(machine, sample->pid, | |
2161 | sample->tid ?: sample->pid); | |
49394a2a DA |
2162 | if (thread == NULL) { |
2163 | pr_debug("Failed to get thread for tid %d. skipping sample.\n", | |
2164 | sample->tid); | |
2165 | } | |
96039c7c NK |
2166 | |
2167 | save_task_callchain(sched, sample, evsel, machine); | |
699b5b92 NK |
2168 | if (sched->idle_hist) { |
2169 | struct thread *idle; | |
2170 | struct idle_thread_runtime *itr; | |
2171 | ||
2172 | idle = get_idle_thread(sample->cpu); | |
2173 | if (idle == NULL) { | |
2174 | pr_err("Failed to get idle thread for cpu %d.\n", sample->cpu); | |
2175 | return NULL; | |
2176 | } | |
2177 | ||
2178 | itr = thread__priv(idle); | |
2179 | if (itr == NULL) | |
2180 | return NULL; | |
2181 | ||
2182 | itr->last_thread = thread; | |
2183 | ||
2184 | /* copy task callchain when entering to idle */ | |
2185 | if (perf_evsel__intval(evsel, sample, "next_pid") == 0) | |
2186 | save_idle_callchain(itr, sample); | |
2187 | } | |
49394a2a DA |
2188 | } |
2189 | ||
2190 | return thread; | |
2191 | } | |
2192 | ||
52df138c | 2193 | static bool timehist_skip_sample(struct perf_sched *sched, |
a4b2b6f5 NK |
2194 | struct thread *thread, |
2195 | struct perf_evsel *evsel, | |
2196 | struct perf_sample *sample) | |
49394a2a DA |
2197 | { |
2198 | bool rc = false; | |
2199 | ||
52df138c | 2200 | if (thread__is_filtered(thread)) { |
49394a2a | 2201 | rc = true; |
52df138c DA |
2202 | sched->skipped_samples++; |
2203 | } | |
49394a2a | 2204 | |
a4b2b6f5 NK |
2205 | if (sched->idle_hist) { |
2206 | if (strcmp(perf_evsel__name(evsel), "sched:sched_switch")) | |
2207 | rc = true; | |
2208 | else if (perf_evsel__intval(evsel, sample, "prev_pid") != 0 && | |
2209 | perf_evsel__intval(evsel, sample, "next_pid") != 0) | |
2210 | rc = true; | |
2211 | } | |
2212 | ||
49394a2a DA |
2213 | return rc; |
2214 | } | |
2215 | ||
fc1469f1 | 2216 | static void timehist_print_wakeup_event(struct perf_sched *sched, |
a4b2b6f5 | 2217 | struct perf_evsel *evsel, |
fc1469f1 DA |
2218 | struct perf_sample *sample, |
2219 | struct machine *machine, | |
2220 | struct thread *awakened) | |
2221 | { | |
2222 | struct thread *thread; | |
2223 | char tstr[64]; | |
2224 | ||
2225 | thread = machine__findnew_thread(machine, sample->pid, sample->tid); | |
2226 | if (thread == NULL) | |
2227 | return; | |
2228 | ||
2229 | /* show wakeup unless both awakee and awaker are filtered */ | |
a4b2b6f5 NK |
2230 | if (timehist_skip_sample(sched, thread, evsel, sample) && |
2231 | timehist_skip_sample(sched, awakened, evsel, sample)) { | |
fc1469f1 DA |
2232 | return; |
2233 | } | |
2234 | ||
2235 | timestamp__scnprintf_usec(sample->time, tstr, sizeof(tstr)); | |
2236 | printf("%15s [%04d] ", tstr, sample->cpu); | |
a407b067 DA |
2237 | if (sched->show_cpu_visual) |
2238 | printf(" %*s ", sched->max_cpu + 1, ""); | |
fc1469f1 DA |
2239 | |
2240 | printf(" %-*s ", comm_width, timehist_get_commstr(thread)); | |
2241 | ||
2242 | /* dt spacer */ | |
2243 | printf(" %9s %9s %9s ", "", "", ""); | |
2244 | ||
2245 | printf("awakened: %s", timehist_get_commstr(awakened)); | |
2246 | ||
2247 | printf("\n"); | |
2248 | } | |
2249 | ||
2250 | static int timehist_sched_wakeup_event(struct perf_tool *tool, | |
49394a2a DA |
2251 | union perf_event *event __maybe_unused, |
2252 | struct perf_evsel *evsel, | |
2253 | struct perf_sample *sample, | |
2254 | struct machine *machine) | |
2255 | { | |
fc1469f1 | 2256 | struct perf_sched *sched = container_of(tool, struct perf_sched, tool); |
49394a2a DA |
2257 | struct thread *thread; |
2258 | struct thread_runtime *tr = NULL; | |
2259 | /* want pid of awakened task not pid in sample */ | |
2260 | const u32 pid = perf_evsel__intval(evsel, sample, "pid"); | |
2261 | ||
2262 | thread = machine__findnew_thread(machine, 0, pid); | |
2263 | if (thread == NULL) | |
2264 | return -1; | |
2265 | ||
2266 | tr = thread__get_runtime(thread); | |
2267 | if (tr == NULL) | |
2268 | return -1; | |
2269 | ||
2270 | if (tr->ready_to_run == 0) | |
2271 | tr->ready_to_run = sample->time; | |
2272 | ||
fc1469f1 | 2273 | /* show wakeups if requested */ |
853b7407 DA |
2274 | if (sched->show_wakeups && |
2275 | !perf_time__skip_sample(&sched->ptime, sample->time)) | |
a4b2b6f5 | 2276 | timehist_print_wakeup_event(sched, evsel, sample, machine, thread); |
fc1469f1 | 2277 | |
49394a2a DA |
2278 | return 0; |
2279 | } | |
2280 | ||
350f54fa DA |
2281 | static void timehist_print_migration_event(struct perf_sched *sched, |
2282 | struct perf_evsel *evsel, | |
2283 | struct perf_sample *sample, | |
2284 | struct machine *machine, | |
2285 | struct thread *migrated) | |
2286 | { | |
2287 | struct thread *thread; | |
2288 | char tstr[64]; | |
2289 | u32 max_cpus = sched->max_cpu + 1; | |
2290 | u32 ocpu, dcpu; | |
2291 | ||
2292 | if (sched->summary_only) | |
2293 | return; | |
2294 | ||
2295 | max_cpus = sched->max_cpu + 1; | |
2296 | ocpu = perf_evsel__intval(evsel, sample, "orig_cpu"); | |
2297 | dcpu = perf_evsel__intval(evsel, sample, "dest_cpu"); | |
2298 | ||
2299 | thread = machine__findnew_thread(machine, sample->pid, sample->tid); | |
2300 | if (thread == NULL) | |
2301 | return; | |
2302 | ||
a4b2b6f5 NK |
2303 | if (timehist_skip_sample(sched, thread, evsel, sample) && |
2304 | timehist_skip_sample(sched, migrated, evsel, sample)) { | |
350f54fa DA |
2305 | return; |
2306 | } | |
2307 | ||
2308 | timestamp__scnprintf_usec(sample->time, tstr, sizeof(tstr)); | |
2309 | printf("%15s [%04d] ", tstr, sample->cpu); | |
2310 | ||
2311 | if (sched->show_cpu_visual) { | |
2312 | u32 i; | |
2313 | char c; | |
2314 | ||
2315 | printf(" "); | |
2316 | for (i = 0; i < max_cpus; ++i) { | |
2317 | c = (i == sample->cpu) ? 'm' : ' '; | |
2318 | printf("%c", c); | |
2319 | } | |
2320 | printf(" "); | |
2321 | } | |
2322 | ||
2323 | printf(" %-*s ", comm_width, timehist_get_commstr(thread)); | |
2324 | ||
2325 | /* dt spacer */ | |
2326 | printf(" %9s %9s %9s ", "", "", ""); | |
2327 | ||
2328 | printf("migrated: %s", timehist_get_commstr(migrated)); | |
2329 | printf(" cpu %d => %d", ocpu, dcpu); | |
2330 | ||
2331 | printf("\n"); | |
2332 | } | |
2333 | ||
2334 | static int timehist_migrate_task_event(struct perf_tool *tool, | |
2335 | union perf_event *event __maybe_unused, | |
2336 | struct perf_evsel *evsel, | |
2337 | struct perf_sample *sample, | |
2338 | struct machine *machine) | |
2339 | { | |
2340 | struct perf_sched *sched = container_of(tool, struct perf_sched, tool); | |
2341 | struct thread *thread; | |
2342 | struct thread_runtime *tr = NULL; | |
2343 | /* want pid of migrated task not pid in sample */ | |
2344 | const u32 pid = perf_evsel__intval(evsel, sample, "pid"); | |
2345 | ||
2346 | thread = machine__findnew_thread(machine, 0, pid); | |
2347 | if (thread == NULL) | |
2348 | return -1; | |
2349 | ||
2350 | tr = thread__get_runtime(thread); | |
2351 | if (tr == NULL) | |
2352 | return -1; | |
2353 | ||
2354 | tr->migrations++; | |
2355 | ||
2356 | /* show migrations if requested */ | |
2357 | timehist_print_migration_event(sched, evsel, sample, machine, thread); | |
2358 | ||
2359 | return 0; | |
2360 | } | |
2361 | ||
52df138c | 2362 | static int timehist_sched_change_event(struct perf_tool *tool, |
49394a2a DA |
2363 | union perf_event *event, |
2364 | struct perf_evsel *evsel, | |
2365 | struct perf_sample *sample, | |
2366 | struct machine *machine) | |
2367 | { | |
fc1469f1 | 2368 | struct perf_sched *sched = container_of(tool, struct perf_sched, tool); |
853b7407 | 2369 | struct perf_time_interval *ptime = &sched->ptime; |
49394a2a DA |
2370 | struct addr_location al; |
2371 | struct thread *thread; | |
2372 | struct thread_runtime *tr = NULL; | |
853b7407 | 2373 | u64 tprev, t = sample->time; |
49394a2a DA |
2374 | int rc = 0; |
2375 | ||
2376 | if (machine__resolve(machine, &al, sample) < 0) { | |
2377 | pr_err("problem processing %d event. skipping it\n", | |
2378 | event->header.type); | |
2379 | rc = -1; | |
2380 | goto out; | |
2381 | } | |
2382 | ||
6c973c90 | 2383 | thread = timehist_get_thread(sched, sample, machine, evsel); |
49394a2a DA |
2384 | if (thread == NULL) { |
2385 | rc = -1; | |
2386 | goto out; | |
2387 | } | |
2388 | ||
a4b2b6f5 | 2389 | if (timehist_skip_sample(sched, thread, evsel, sample)) |
49394a2a DA |
2390 | goto out; |
2391 | ||
2392 | tr = thread__get_runtime(thread); | |
2393 | if (tr == NULL) { | |
2394 | rc = -1; | |
2395 | goto out; | |
2396 | } | |
2397 | ||
2398 | tprev = perf_evsel__get_time(evsel, sample->cpu); | |
2399 | ||
853b7407 DA |
2400 | /* |
2401 | * If start time given: | |
2402 | * - sample time is under window user cares about - skip sample | |
2403 | * - tprev is under window user cares about - reset to start of window | |
2404 | */ | |
2405 | if (ptime->start && ptime->start > t) | |
2406 | goto out; | |
2407 | ||
bdd75729 | 2408 | if (tprev && ptime->start > tprev) |
853b7407 DA |
2409 | tprev = ptime->start; |
2410 | ||
2411 | /* | |
2412 | * If end time given: | |
2413 | * - previous sched event is out of window - we are done | |
2414 | * - sample time is beyond window user cares about - reset it | |
2415 | * to close out stats for time window interest | |
2416 | */ | |
2417 | if (ptime->end) { | |
2418 | if (tprev > ptime->end) | |
2419 | goto out; | |
2420 | ||
2421 | if (t > ptime->end) | |
2422 | t = ptime->end; | |
2423 | } | |
2424 | ||
07235f84 NK |
2425 | if (!sched->idle_hist || thread->tid == 0) { |
2426 | timehist_update_runtime_stats(tr, t, tprev); | |
2427 | ||
2428 | if (sched->idle_hist) { | |
2429 | struct idle_thread_runtime *itr = (void *)tr; | |
2430 | struct thread_runtime *last_tr; | |
2431 | ||
2432 | BUG_ON(thread->tid != 0); | |
2433 | ||
2434 | if (itr->last_thread == NULL) | |
2435 | goto out; | |
2436 | ||
2437 | /* add current idle time as last thread's runtime */ | |
2438 | last_tr = thread__get_runtime(itr->last_thread); | |
2439 | if (last_tr == NULL) | |
2440 | goto out; | |
2441 | ||
2442 | timehist_update_runtime_stats(last_tr, t, tprev); | |
2443 | /* | |
2444 | * remove delta time of last thread as it's not updated | |
2445 | * and otherwise it will show an invalid value next | |
2446 | * time. we only care total run time and run stat. | |
2447 | */ | |
2448 | last_tr->dt_run = 0; | |
2449 | last_tr->dt_wait = 0; | |
2450 | last_tr->dt_delay = 0; | |
2451 | ||
ba957ebb NK |
2452 | if (itr->cursor.nr) |
2453 | callchain_append(&itr->callchain, &itr->cursor, t - tprev); | |
2454 | ||
07235f84 NK |
2455 | itr->last_thread = NULL; |
2456 | } | |
2457 | } | |
853b7407 | 2458 | |
52df138c | 2459 | if (!sched->summary_only) |
853b7407 | 2460 | timehist_print_sample(sched, sample, &al, thread, t); |
49394a2a DA |
2461 | |
2462 | out: | |
2463 | if (tr) { | |
2464 | /* time of this sched_switch event becomes last time task seen */ | |
2465 | tr->last_time = sample->time; | |
2466 | ||
2467 | /* sched out event for task so reset ready to run time */ | |
2468 | tr->ready_to_run = 0; | |
2469 | } | |
2470 | ||
2471 | perf_evsel__save_time(evsel, sample->time, sample->cpu); | |
2472 | ||
2473 | return rc; | |
2474 | } | |
2475 | ||
2476 | static int timehist_sched_switch_event(struct perf_tool *tool, | |
2477 | union perf_event *event, | |
2478 | struct perf_evsel *evsel, | |
2479 | struct perf_sample *sample, | |
2480 | struct machine *machine __maybe_unused) | |
2481 | { | |
2482 | return timehist_sched_change_event(tool, event, evsel, sample, machine); | |
2483 | } | |
2484 | ||
2485 | static int process_lost(struct perf_tool *tool __maybe_unused, | |
2486 | union perf_event *event, | |
2487 | struct perf_sample *sample, | |
2488 | struct machine *machine __maybe_unused) | |
2489 | { | |
2490 | char tstr[64]; | |
2491 | ||
2492 | timestamp__scnprintf_usec(sample->time, tstr, sizeof(tstr)); | |
2493 | printf("%15s ", tstr); | |
2494 | printf("lost %" PRIu64 " events on cpu %d\n", event->lost.lost, sample->cpu); | |
2495 | ||
2496 | return 0; | |
2497 | } | |
2498 | ||
2499 | ||
52df138c DA |
2500 | static void print_thread_runtime(struct thread *t, |
2501 | struct thread_runtime *r) | |
2502 | { | |
2503 | double mean = avg_stats(&r->run_stats); | |
2504 | float stddev; | |
2505 | ||
2506 | printf("%*s %5d %9" PRIu64 " ", | |
2507 | comm_width, timehist_get_commstr(t), t->ppid, | |
2508 | (u64) r->run_stats.n); | |
2509 | ||
2510 | print_sched_time(r->total_run_time, 8); | |
2511 | stddev = rel_stddev_stats(stddev_stats(&r->run_stats), mean); | |
2512 | print_sched_time(r->run_stats.min, 6); | |
2513 | printf(" "); | |
2514 | print_sched_time((u64) mean, 6); | |
2515 | printf(" "); | |
2516 | print_sched_time(r->run_stats.max, 6); | |
2517 | printf(" "); | |
2518 | printf("%5.2f", stddev); | |
350f54fa | 2519 | printf(" %5" PRIu64, r->migrations); |
52df138c DA |
2520 | printf("\n"); |
2521 | } | |
2522 | ||
2523 | struct total_run_stats { | |
2524 | u64 sched_count; | |
2525 | u64 task_count; | |
2526 | u64 total_run_time; | |
2527 | }; | |
2528 | ||
2529 | static int __show_thread_runtime(struct thread *t, void *priv) | |
2530 | { | |
2531 | struct total_run_stats *stats = priv; | |
2532 | struct thread_runtime *r; | |
2533 | ||
2534 | if (thread__is_filtered(t)) | |
2535 | return 0; | |
2536 | ||
2537 | r = thread__priv(t); | |
2538 | if (r && r->run_stats.n) { | |
2539 | stats->task_count++; | |
2540 | stats->sched_count += r->run_stats.n; | |
2541 | stats->total_run_time += r->total_run_time; | |
2542 | print_thread_runtime(t, r); | |
2543 | } | |
2544 | ||
2545 | return 0; | |
2546 | } | |
2547 | ||
2548 | static int show_thread_runtime(struct thread *t, void *priv) | |
2549 | { | |
2550 | if (t->dead) | |
2551 | return 0; | |
2552 | ||
2553 | return __show_thread_runtime(t, priv); | |
2554 | } | |
2555 | ||
2556 | static int show_deadthread_runtime(struct thread *t, void *priv) | |
2557 | { | |
2558 | if (!t->dead) | |
2559 | return 0; | |
2560 | ||
2561 | return __show_thread_runtime(t, priv); | |
2562 | } | |
2563 | ||
ba957ebb NK |
2564 | static size_t callchain__fprintf_folded(FILE *fp, struct callchain_node *node) |
2565 | { | |
2566 | const char *sep = " <- "; | |
2567 | struct callchain_list *chain; | |
2568 | size_t ret = 0; | |
2569 | char bf[1024]; | |
2570 | bool first; | |
2571 | ||
2572 | if (node == NULL) | |
2573 | return 0; | |
2574 | ||
2575 | ret = callchain__fprintf_folded(fp, node->parent); | |
2576 | first = (ret == 0); | |
2577 | ||
2578 | list_for_each_entry(chain, &node->val, list) { | |
2579 | if (chain->ip >= PERF_CONTEXT_MAX) | |
2580 | continue; | |
2581 | if (chain->ms.sym && chain->ms.sym->ignore) | |
2582 | continue; | |
2583 | ret += fprintf(fp, "%s%s", first ? "" : sep, | |
2584 | callchain_list__sym_name(chain, bf, sizeof(bf), | |
2585 | false)); | |
2586 | first = false; | |
2587 | } | |
2588 | ||
2589 | return ret; | |
2590 | } | |
2591 | ||
2592 | static size_t timehist_print_idlehist_callchain(struct rb_root *root) | |
2593 | { | |
2594 | size_t ret = 0; | |
2595 | FILE *fp = stdout; | |
2596 | struct callchain_node *chain; | |
2597 | struct rb_node *rb_node = rb_first(root); | |
2598 | ||
2599 | printf(" %16s %8s %s\n", "Idle time (msec)", "Count", "Callchains"); | |
2600 | printf(" %.16s %.8s %.50s\n", graph_dotted_line, graph_dotted_line, | |
2601 | graph_dotted_line); | |
2602 | ||
2603 | while (rb_node) { | |
2604 | chain = rb_entry(rb_node, struct callchain_node, rb_node); | |
2605 | rb_node = rb_next(rb_node); | |
2606 | ||
2607 | ret += fprintf(fp, " "); | |
2608 | print_sched_time(chain->hit, 12); | |
2609 | ret += 16; /* print_sched_time returns 2nd arg + 4 */ | |
2610 | ret += fprintf(fp, " %8d ", chain->count); | |
2611 | ret += callchain__fprintf_folded(fp, chain); | |
2612 | ret += fprintf(fp, "\n"); | |
2613 | } | |
2614 | ||
2615 | return ret; | |
2616 | } | |
2617 | ||
52df138c DA |
2618 | static void timehist_print_summary(struct perf_sched *sched, |
2619 | struct perf_session *session) | |
2620 | { | |
2621 | struct machine *m = &session->machines.host; | |
2622 | struct total_run_stats totals; | |
2623 | u64 task_count; | |
2624 | struct thread *t; | |
2625 | struct thread_runtime *r; | |
2626 | int i; | |
2627 | ||
2628 | memset(&totals, 0, sizeof(totals)); | |
2629 | ||
07235f84 NK |
2630 | if (sched->idle_hist) { |
2631 | printf("\nIdle-time summary\n"); | |
2632 | printf("%*s parent sched-out ", comm_width, "comm"); | |
2633 | printf(" idle-time min-idle avg-idle max-idle stddev migrations\n"); | |
2634 | } else { | |
2635 | printf("\nRuntime summary\n"); | |
2636 | printf("%*s parent sched-in ", comm_width, "comm"); | |
2637 | printf(" run-time min-run avg-run max-run stddev migrations\n"); | |
2638 | } | |
52df138c DA |
2639 | printf("%*s (count) ", comm_width, ""); |
2640 | printf(" (msec) (msec) (msec) (msec) %%\n"); | |
350f54fa | 2641 | printf("%.117s\n", graph_dotted_line); |
52df138c DA |
2642 | |
2643 | machine__for_each_thread(m, show_thread_runtime, &totals); | |
2644 | task_count = totals.task_count; | |
2645 | if (!task_count) | |
2646 | printf("<no still running tasks>\n"); | |
2647 | ||
2648 | printf("\nTerminated tasks:\n"); | |
2649 | machine__for_each_thread(m, show_deadthread_runtime, &totals); | |
2650 | if (task_count == totals.task_count) | |
2651 | printf("<no terminated tasks>\n"); | |
2652 | ||
2653 | /* CPU idle stats not tracked when samples were skipped */ | |
07235f84 | 2654 | if (sched->skipped_samples && !sched->idle_hist) |
52df138c DA |
2655 | return; |
2656 | ||
2657 | printf("\nIdle stats:\n"); | |
b336352b | 2658 | for (i = 0; i < idle_max_cpu; ++i) { |
52df138c DA |
2659 | t = idle_threads[i]; |
2660 | if (!t) | |
2661 | continue; | |
2662 | ||
2663 | r = thread__priv(t); | |
2664 | if (r && r->run_stats.n) { | |
2665 | totals.sched_count += r->run_stats.n; | |
2666 | printf(" CPU %2d idle for ", i); | |
2667 | print_sched_time(r->total_run_time, 6); | |
2668 | printf(" msec\n"); | |
2669 | } else | |
2670 | printf(" CPU %2d idle entire time window\n", i); | |
2671 | } | |
2672 | ||
ba957ebb NK |
2673 | if (sched->idle_hist && symbol_conf.use_callchain) { |
2674 | callchain_param.mode = CHAIN_FOLDED; | |
2675 | callchain_param.value = CCVAL_PERIOD; | |
2676 | ||
2677 | callchain_register_param(&callchain_param); | |
2678 | ||
2679 | printf("\nIdle stats by callchain:\n"); | |
2680 | for (i = 0; i < idle_max_cpu; ++i) { | |
2681 | struct idle_thread_runtime *itr; | |
2682 | ||
2683 | t = idle_threads[i]; | |
2684 | if (!t) | |
2685 | continue; | |
2686 | ||
2687 | itr = thread__priv(t); | |
2688 | if (itr == NULL) | |
2689 | continue; | |
2690 | ||
2691 | callchain_param.sort(&itr->sorted_root, &itr->callchain, | |
2692 | 0, &callchain_param); | |
2693 | ||
2694 | printf(" CPU %2d:", i); | |
2695 | print_sched_time(itr->tr.total_run_time, 6); | |
2696 | printf(" msec\n"); | |
2697 | timehist_print_idlehist_callchain(&itr->sorted_root); | |
2698 | printf("\n"); | |
2699 | } | |
2700 | } | |
2701 | ||
52df138c DA |
2702 | printf("\n" |
2703 | " Total number of unique tasks: %" PRIu64 "\n" | |
2704 | "Total number of context switches: %" PRIu64 "\n" | |
2705 | " Total run time (msec): ", | |
2706 | totals.task_count, totals.sched_count); | |
2707 | ||
2708 | print_sched_time(totals.total_run_time, 2); | |
2709 | printf("\n"); | |
2710 | } | |
2711 | ||
49394a2a DA |
2712 | typedef int (*sched_handler)(struct perf_tool *tool, |
2713 | union perf_event *event, | |
2714 | struct perf_evsel *evsel, | |
2715 | struct perf_sample *sample, | |
2716 | struct machine *machine); | |
2717 | ||
2718 | static int perf_timehist__process_sample(struct perf_tool *tool, | |
2719 | union perf_event *event, | |
2720 | struct perf_sample *sample, | |
2721 | struct perf_evsel *evsel, | |
2722 | struct machine *machine) | |
2723 | { | |
2724 | struct perf_sched *sched = container_of(tool, struct perf_sched, tool); | |
2725 | int err = 0; | |
2726 | int this_cpu = sample->cpu; | |
2727 | ||
2728 | if (this_cpu > sched->max_cpu) | |
2729 | sched->max_cpu = this_cpu; | |
2730 | ||
2731 | if (evsel->handler != NULL) { | |
2732 | sched_handler f = evsel->handler; | |
2733 | ||
2734 | err = f(tool, event, evsel, sample, machine); | |
2735 | } | |
2736 | ||
2737 | return err; | |
2738 | } | |
2739 | ||
6c973c90 DA |
2740 | static int timehist_check_attr(struct perf_sched *sched, |
2741 | struct perf_evlist *evlist) | |
2742 | { | |
2743 | struct perf_evsel *evsel; | |
2744 | struct evsel_runtime *er; | |
2745 | ||
2746 | list_for_each_entry(evsel, &evlist->entries, node) { | |
2747 | er = perf_evsel__get_runtime(evsel); | |
2748 | if (er == NULL) { | |
2749 | pr_err("Failed to allocate memory for evsel runtime data\n"); | |
2750 | return -1; | |
2751 | } | |
2752 | ||
2753 | if (sched->show_callchain && | |
2754 | !(evsel->attr.sample_type & PERF_SAMPLE_CALLCHAIN)) { | |
2755 | pr_info("Samples do not have callchains.\n"); | |
2756 | sched->show_callchain = 0; | |
2757 | symbol_conf.use_callchain = 0; | |
2758 | } | |
2759 | } | |
2760 | ||
2761 | return 0; | |
2762 | } | |
2763 | ||
49394a2a DA |
2764 | static int perf_sched__timehist(struct perf_sched *sched) |
2765 | { | |
2766 | const struct perf_evsel_str_handler handlers[] = { | |
2767 | { "sched:sched_switch", timehist_sched_switch_event, }, | |
2768 | { "sched:sched_wakeup", timehist_sched_wakeup_event, }, | |
2769 | { "sched:sched_wakeup_new", timehist_sched_wakeup_event, }, | |
2770 | }; | |
350f54fa DA |
2771 | const struct perf_evsel_str_handler migrate_handlers[] = { |
2772 | { "sched:sched_migrate_task", timehist_migrate_task_event, }, | |
2773 | }; | |
49394a2a DA |
2774 | struct perf_data_file file = { |
2775 | .path = input_name, | |
2776 | .mode = PERF_DATA_MODE_READ, | |
6fa94258 | 2777 | .force = sched->force, |
49394a2a DA |
2778 | }; |
2779 | ||
2780 | struct perf_session *session; | |
52df138c | 2781 | struct perf_evlist *evlist; |
49394a2a DA |
2782 | int err = -1; |
2783 | ||
2784 | /* | |
2785 | * event handlers for timehist option | |
2786 | */ | |
2787 | sched->tool.sample = perf_timehist__process_sample; | |
2788 | sched->tool.mmap = perf_event__process_mmap; | |
2789 | sched->tool.comm = perf_event__process_comm; | |
2790 | sched->tool.exit = perf_event__process_exit; | |
2791 | sched->tool.fork = perf_event__process_fork; | |
2792 | sched->tool.lost = process_lost; | |
2793 | sched->tool.attr = perf_event__process_attr; | |
2794 | sched->tool.tracing_data = perf_event__process_tracing_data; | |
2795 | sched->tool.build_id = perf_event__process_build_id; | |
2796 | ||
2797 | sched->tool.ordered_events = true; | |
2798 | sched->tool.ordering_requires_timestamps = true; | |
2799 | ||
6c973c90 DA |
2800 | symbol_conf.use_callchain = sched->show_callchain; |
2801 | ||
49394a2a DA |
2802 | session = perf_session__new(&file, false, &sched->tool); |
2803 | if (session == NULL) | |
2804 | return -ENOMEM; | |
2805 | ||
52df138c DA |
2806 | evlist = session->evlist; |
2807 | ||
49394a2a DA |
2808 | symbol__init(&session->header.env); |
2809 | ||
853b7407 DA |
2810 | if (perf_time__parse_str(&sched->ptime, sched->time_str) != 0) { |
2811 | pr_err("Invalid time string\n"); | |
2812 | return -EINVAL; | |
2813 | } | |
2814 | ||
6c973c90 DA |
2815 | if (timehist_check_attr(sched, evlist) != 0) |
2816 | goto out; | |
2817 | ||
49394a2a DA |
2818 | setup_pager(); |
2819 | ||
2820 | /* setup per-evsel handlers */ | |
2821 | if (perf_session__set_tracepoints_handlers(session, handlers)) | |
2822 | goto out; | |
2823 | ||
f45bf8d3 DA |
2824 | /* sched_switch event at a minimum needs to exist */ |
2825 | if (!perf_evlist__find_tracepoint_by_name(session->evlist, | |
2826 | "sched:sched_switch")) { | |
2827 | pr_err("No sched_switch events found. Have you run 'perf sched record'?\n"); | |
49394a2a | 2828 | goto out; |
f45bf8d3 | 2829 | } |
49394a2a | 2830 | |
350f54fa DA |
2831 | if (sched->show_migrations && |
2832 | perf_session__set_tracepoints_handlers(session, migrate_handlers)) | |
2833 | goto out; | |
2834 | ||
49394a2a DA |
2835 | /* pre-allocate struct for per-CPU idle stats */ |
2836 | sched->max_cpu = session->header.env.nr_cpus_online; | |
2837 | if (sched->max_cpu == 0) | |
2838 | sched->max_cpu = 4; | |
2839 | if (init_idle_threads(sched->max_cpu)) | |
2840 | goto out; | |
2841 | ||
52df138c DA |
2842 | /* summary_only implies summary option, but don't overwrite summary if set */ |
2843 | if (sched->summary_only) | |
2844 | sched->summary = sched->summary_only; | |
2845 | ||
2846 | if (!sched->summary_only) | |
a407b067 | 2847 | timehist_header(sched); |
49394a2a DA |
2848 | |
2849 | err = perf_session__process_events(session); | |
2850 | if (err) { | |
2851 | pr_err("Failed to process events, error %d", err); | |
2852 | goto out; | |
2853 | } | |
2854 | ||
52df138c DA |
2855 | sched->nr_events = evlist->stats.nr_events[0]; |
2856 | sched->nr_lost_events = evlist->stats.total_lost; | |
2857 | sched->nr_lost_chunks = evlist->stats.nr_events[PERF_RECORD_LOST]; | |
2858 | ||
2859 | if (sched->summary) | |
2860 | timehist_print_summary(sched, session); | |
2861 | ||
49394a2a DA |
2862 | out: |
2863 | free_idle_threads(); | |
2864 | perf_session__delete(session); | |
2865 | ||
2866 | return err; | |
2867 | } | |
2868 | ||
2869 | ||
0e9b07e5 | 2870 | static void print_bad_events(struct perf_sched *sched) |
0ec04e16 | 2871 | { |
0e9b07e5 | 2872 | if (sched->nr_unordered_timestamps && sched->nr_timestamps) { |
0ec04e16 | 2873 | printf(" INFO: %.3f%% unordered timestamps (%ld out of %ld)\n", |
0e9b07e5 ACM |
2874 | (double)sched->nr_unordered_timestamps/(double)sched->nr_timestamps*100.0, |
2875 | sched->nr_unordered_timestamps, sched->nr_timestamps); | |
0ec04e16 | 2876 | } |
0e9b07e5 | 2877 | if (sched->nr_lost_events && sched->nr_events) { |
0ec04e16 | 2878 | printf(" INFO: %.3f%% lost events (%ld out of %ld, in %ld chunks)\n", |
0e9b07e5 ACM |
2879 | (double)sched->nr_lost_events/(double)sched->nr_events * 100.0, |
2880 | sched->nr_lost_events, sched->nr_events, sched->nr_lost_chunks); | |
0ec04e16 | 2881 | } |
0e9b07e5 | 2882 | if (sched->nr_context_switch_bugs && sched->nr_timestamps) { |
0ec04e16 | 2883 | printf(" INFO: %.3f%% context switch bugs (%ld out of %ld)", |
0e9b07e5 ACM |
2884 | (double)sched->nr_context_switch_bugs/(double)sched->nr_timestamps*100.0, |
2885 | sched->nr_context_switch_bugs, sched->nr_timestamps); | |
2886 | if (sched->nr_lost_events) | |
0ec04e16 IM |
2887 | printf(" (due to lost events?)"); |
2888 | printf("\n"); | |
2889 | } | |
2890 | } | |
2891 | ||
2f80dd44 JB |
2892 | static void __merge_work_atoms(struct rb_root *root, struct work_atoms *data) |
2893 | { | |
2894 | struct rb_node **new = &(root->rb_node), *parent = NULL; | |
2895 | struct work_atoms *this; | |
2896 | const char *comm = thread__comm_str(data->thread), *this_comm; | |
2897 | ||
2898 | while (*new) { | |
2899 | int cmp; | |
2900 | ||
2901 | this = container_of(*new, struct work_atoms, node); | |
2902 | parent = *new; | |
2903 | ||
2904 | this_comm = thread__comm_str(this->thread); | |
2905 | cmp = strcmp(comm, this_comm); | |
2906 | if (cmp > 0) { | |
2907 | new = &((*new)->rb_left); | |
2908 | } else if (cmp < 0) { | |
2909 | new = &((*new)->rb_right); | |
2910 | } else { | |
2911 | this->num_merged++; | |
2912 | this->total_runtime += data->total_runtime; | |
2913 | this->nb_atoms += data->nb_atoms; | |
2914 | this->total_lat += data->total_lat; | |
2915 | list_splice(&data->work_list, &this->work_list); | |
2916 | if (this->max_lat < data->max_lat) { | |
2917 | this->max_lat = data->max_lat; | |
2918 | this->max_lat_at = data->max_lat_at; | |
2919 | } | |
2920 | zfree(&data); | |
2921 | return; | |
2922 | } | |
2923 | } | |
2924 | ||
2925 | data->num_merged++; | |
2926 | rb_link_node(&data->node, parent, new); | |
2927 | rb_insert_color(&data->node, root); | |
2928 | } | |
2929 | ||
2930 | static void perf_sched__merge_lat(struct perf_sched *sched) | |
2931 | { | |
2932 | struct work_atoms *data; | |
2933 | struct rb_node *node; | |
2934 | ||
2935 | if (sched->skip_merge) | |
2936 | return; | |
2937 | ||
2938 | while ((node = rb_first(&sched->atom_root))) { | |
2939 | rb_erase(node, &sched->atom_root); | |
2940 | data = rb_entry(node, struct work_atoms, node); | |
2941 | __merge_work_atoms(&sched->merged_atom_root, data); | |
2942 | } | |
2943 | } | |
2944 | ||
0e9b07e5 | 2945 | static int perf_sched__lat(struct perf_sched *sched) |
0ec04e16 IM |
2946 | { |
2947 | struct rb_node *next; | |
2948 | ||
2949 | setup_pager(); | |
ad9def7c | 2950 | |
ae536acf | 2951 | if (perf_sched__read_events(sched)) |
a116e05d | 2952 | return -1; |
ad9def7c | 2953 | |
2f80dd44 | 2954 | perf_sched__merge_lat(sched); |
0e9b07e5 | 2955 | perf_sched__sort_lat(sched); |
0ec04e16 | 2956 | |
80790e0b RR |
2957 | printf("\n -----------------------------------------------------------------------------------------------------------------\n"); |
2958 | printf(" Task | Runtime ms | Switches | Average delay ms | Maximum delay ms | Maximum delay at |\n"); | |
2959 | printf(" -----------------------------------------------------------------------------------------------------------------\n"); | |
0ec04e16 | 2960 | |
0e9b07e5 | 2961 | next = rb_first(&sched->sorted_atom_root); |
0ec04e16 IM |
2962 | |
2963 | while (next) { | |
2964 | struct work_atoms *work_list; | |
2965 | ||
2966 | work_list = rb_entry(next, struct work_atoms, node); | |
0e9b07e5 | 2967 | output_lat_thread(sched, work_list); |
0ec04e16 | 2968 | next = rb_next(next); |
ae536acf | 2969 | thread__zput(work_list->thread); |
0ec04e16 IM |
2970 | } |
2971 | ||
80790e0b | 2972 | printf(" -----------------------------------------------------------------------------------------------------------------\n"); |
9486aa38 | 2973 | printf(" TOTAL: |%11.3f ms |%9" PRIu64 " |\n", |
4fc76e49 | 2974 | (double)sched->all_runtime / NSEC_PER_MSEC, sched->all_count); |
0ec04e16 IM |
2975 | |
2976 | printf(" ---------------------------------------------------\n"); | |
2977 | ||
0e9b07e5 | 2978 | print_bad_events(sched); |
0ec04e16 IM |
2979 | printf("\n"); |
2980 | ||
a116e05d | 2981 | return 0; |
0ec04e16 IM |
2982 | } |
2983 | ||
99623c62 JO |
2984 | static int setup_map_cpus(struct perf_sched *sched) |
2985 | { | |
73643bb6 JO |
2986 | struct cpu_map *map; |
2987 | ||
99623c62 JO |
2988 | sched->max_cpu = sysconf(_SC_NPROCESSORS_CONF); |
2989 | ||
2990 | if (sched->map.comp) { | |
2991 | sched->map.comp_cpus = zalloc(sched->max_cpu * sizeof(int)); | |
cf294f24 JO |
2992 | if (!sched->map.comp_cpus) |
2993 | return -1; | |
99623c62 JO |
2994 | } |
2995 | ||
73643bb6 JO |
2996 | if (!sched->map.cpus_str) |
2997 | return 0; | |
2998 | ||
2999 | map = cpu_map__new(sched->map.cpus_str); | |
3000 | if (!map) { | |
3001 | pr_err("failed to get cpus map from %s\n", sched->map.cpus_str); | |
3002 | return -1; | |
3003 | } | |
3004 | ||
3005 | sched->map.cpus = map; | |
99623c62 JO |
3006 | return 0; |
3007 | } | |
3008 | ||
a151a37a JO |
3009 | static int setup_color_pids(struct perf_sched *sched) |
3010 | { | |
3011 | struct thread_map *map; | |
3012 | ||
3013 | if (!sched->map.color_pids_str) | |
3014 | return 0; | |
3015 | ||
3016 | map = thread_map__new_by_tid_str(sched->map.color_pids_str); | |
3017 | if (!map) { | |
3018 | pr_err("failed to get thread map from %s\n", sched->map.color_pids_str); | |
3019 | return -1; | |
3020 | } | |
3021 | ||
3022 | sched->map.color_pids = map; | |
3023 | return 0; | |
3024 | } | |
3025 | ||
cf294f24 JO |
3026 | static int setup_color_cpus(struct perf_sched *sched) |
3027 | { | |
3028 | struct cpu_map *map; | |
3029 | ||
3030 | if (!sched->map.color_cpus_str) | |
3031 | return 0; | |
3032 | ||
3033 | map = cpu_map__new(sched->map.color_cpus_str); | |
3034 | if (!map) { | |
3035 | pr_err("failed to get thread map from %s\n", sched->map.color_cpus_str); | |
3036 | return -1; | |
3037 | } | |
3038 | ||
3039 | sched->map.color_cpus = map; | |
3040 | return 0; | |
3041 | } | |
3042 | ||
0e9b07e5 | 3043 | static int perf_sched__map(struct perf_sched *sched) |
0ec04e16 | 3044 | { |
99623c62 JO |
3045 | if (setup_map_cpus(sched)) |
3046 | return -1; | |
40749d0f | 3047 | |
a151a37a JO |
3048 | if (setup_color_pids(sched)) |
3049 | return -1; | |
3050 | ||
cf294f24 JO |
3051 | if (setup_color_cpus(sched)) |
3052 | return -1; | |
3053 | ||
0ec04e16 | 3054 | setup_pager(); |
ae536acf | 3055 | if (perf_sched__read_events(sched)) |
a116e05d | 3056 | return -1; |
0e9b07e5 | 3057 | print_bad_events(sched); |
a116e05d | 3058 | return 0; |
0ec04e16 IM |
3059 | } |
3060 | ||
0e9b07e5 | 3061 | static int perf_sched__replay(struct perf_sched *sched) |
0ec04e16 IM |
3062 | { |
3063 | unsigned long i; | |
3064 | ||
0e9b07e5 ACM |
3065 | calibrate_run_measurement_overhead(sched); |
3066 | calibrate_sleep_measurement_overhead(sched); | |
0ec04e16 | 3067 | |
0e9b07e5 | 3068 | test_calibrations(sched); |
0ec04e16 | 3069 | |
ae536acf | 3070 | if (perf_sched__read_events(sched)) |
a116e05d | 3071 | return -1; |
0ec04e16 | 3072 | |
0e9b07e5 ACM |
3073 | printf("nr_run_events: %ld\n", sched->nr_run_events); |
3074 | printf("nr_sleep_events: %ld\n", sched->nr_sleep_events); | |
3075 | printf("nr_wakeup_events: %ld\n", sched->nr_wakeup_events); | |
0ec04e16 | 3076 | |
0e9b07e5 ACM |
3077 | if (sched->targetless_wakeups) |
3078 | printf("target-less wakeups: %ld\n", sched->targetless_wakeups); | |
3079 | if (sched->multitarget_wakeups) | |
3080 | printf("multi-target wakeups: %ld\n", sched->multitarget_wakeups); | |
3081 | if (sched->nr_run_events_optimized) | |
0ec04e16 | 3082 | printf("run atoms optimized: %ld\n", |
0e9b07e5 | 3083 | sched->nr_run_events_optimized); |
0ec04e16 | 3084 | |
0e9b07e5 ACM |
3085 | print_task_traces(sched); |
3086 | add_cross_task_wakeups(sched); | |
0ec04e16 | 3087 | |
0e9b07e5 | 3088 | create_tasks(sched); |
0ec04e16 | 3089 | printf("------------------------------------------------------------\n"); |
0e9b07e5 ACM |
3090 | for (i = 0; i < sched->replay_repeat; i++) |
3091 | run_one_test(sched); | |
a116e05d ACM |
3092 | |
3093 | return 0; | |
0ec04e16 IM |
3094 | } |
3095 | ||
0e9b07e5 ACM |
3096 | static void setup_sorting(struct perf_sched *sched, const struct option *options, |
3097 | const char * const usage_msg[]) | |
daa1d7a5 | 3098 | { |
0e9b07e5 | 3099 | char *tmp, *tok, *str = strdup(sched->sort_order); |
daa1d7a5 FW |
3100 | |
3101 | for (tok = strtok_r(str, ", ", &tmp); | |
3102 | tok; tok = strtok_r(NULL, ", ", &tmp)) { | |
0e9b07e5 | 3103 | if (sort_dimension__add(tok, &sched->sort_list) < 0) { |
c7118369 NK |
3104 | usage_with_options_msg(usage_msg, options, |
3105 | "Unknown --sort key: `%s'", tok); | |
daa1d7a5 FW |
3106 | } |
3107 | } | |
3108 | ||
3109 | free(str); | |
3110 | ||
0e9b07e5 | 3111 | sort_dimension__add("pid", &sched->cmp_pid); |
daa1d7a5 FW |
3112 | } |
3113 | ||
1fc35b29 IM |
3114 | static int __cmd_record(int argc, const char **argv) |
3115 | { | |
3116 | unsigned int rec_argc, i, j; | |
3117 | const char **rec_argv; | |
0e9b07e5 ACM |
3118 | const char * const record_args[] = { |
3119 | "record", | |
3120 | "-a", | |
3121 | "-R", | |
0e9b07e5 ACM |
3122 | "-m", "1024", |
3123 | "-c", "1", | |
3124 | "-e", "sched:sched_switch", | |
3125 | "-e", "sched:sched_stat_wait", | |
3126 | "-e", "sched:sched_stat_sleep", | |
3127 | "-e", "sched:sched_stat_iowait", | |
3128 | "-e", "sched:sched_stat_runtime", | |
0e9b07e5 ACM |
3129 | "-e", "sched:sched_process_fork", |
3130 | "-e", "sched:sched_wakeup", | |
7fff9597 | 3131 | "-e", "sched:sched_wakeup_new", |
0e9b07e5 ACM |
3132 | "-e", "sched:sched_migrate_task", |
3133 | }; | |
1fc35b29 IM |
3134 | |
3135 | rec_argc = ARRAY_SIZE(record_args) + argc - 1; | |
3136 | rec_argv = calloc(rec_argc + 1, sizeof(char *)); | |
3137 | ||
e462dc55 | 3138 | if (rec_argv == NULL) |
ce47dc56 CS |
3139 | return -ENOMEM; |
3140 | ||
1fc35b29 IM |
3141 | for (i = 0; i < ARRAY_SIZE(record_args); i++) |
3142 | rec_argv[i] = strdup(record_args[i]); | |
3143 | ||
3144 | for (j = 1; j < (unsigned int)argc; j++, i++) | |
3145 | rec_argv[i] = argv[j]; | |
3146 | ||
3147 | BUG_ON(i != rec_argc); | |
3148 | ||
3149 | return cmd_record(i, rec_argv, NULL); | |
3150 | } | |
3151 | ||
1d037ca1 | 3152 | int cmd_sched(int argc, const char **argv, const char *prefix __maybe_unused) |
0a02ad93 | 3153 | { |
8a39df8f AH |
3154 | const char default_sort_order[] = "avg, max, switch, runtime"; |
3155 | struct perf_sched sched = { | |
3156 | .tool = { | |
3157 | .sample = perf_sched__process_tracepoint_sample, | |
3158 | .comm = perf_event__process_comm, | |
3159 | .lost = perf_event__process_lost, | |
3160 | .fork = perf_sched__process_fork_event, | |
0a8cb85c | 3161 | .ordered_events = true, |
8a39df8f AH |
3162 | }, |
3163 | .cmp_pid = LIST_HEAD_INIT(sched.cmp_pid), | |
3164 | .sort_list = LIST_HEAD_INIT(sched.sort_list), | |
3165 | .start_work_mutex = PTHREAD_MUTEX_INITIALIZER, | |
3166 | .work_done_wait_mutex = PTHREAD_MUTEX_INITIALIZER, | |
8a39df8f AH |
3167 | .sort_order = default_sort_order, |
3168 | .replay_repeat = 10, | |
3169 | .profile_cpu = -1, | |
3170 | .next_shortname1 = 'A', | |
3171 | .next_shortname2 = '0', | |
2f80dd44 | 3172 | .skip_merge = 0, |
6c973c90 DA |
3173 | .show_callchain = 1, |
3174 | .max_stack = 5, | |
8a39df8f | 3175 | }; |
77f02f44 NK |
3176 | const struct option sched_options[] = { |
3177 | OPT_STRING('i', "input", &input_name, "file", | |
3178 | "input file name"), | |
3179 | OPT_INCR('v', "verbose", &verbose, | |
3180 | "be more verbose (show symbol address, etc)"), | |
3181 | OPT_BOOLEAN('D', "dump-raw-trace", &dump_trace, | |
3182 | "dump raw trace in ASCII"), | |
6fa94258 | 3183 | OPT_BOOLEAN('f', "force", &sched.force, "don't complain, do it"), |
77f02f44 NK |
3184 | OPT_END() |
3185 | }; | |
0e9b07e5 ACM |
3186 | const struct option latency_options[] = { |
3187 | OPT_STRING('s', "sort", &sched.sort_order, "key[,key2...]", | |
3188 | "sort by key(s): runtime, switch, avg, max"), | |
0e9b07e5 ACM |
3189 | OPT_INTEGER('C', "CPU", &sched.profile_cpu, |
3190 | "CPU to profile on"), | |
2f80dd44 JB |
3191 | OPT_BOOLEAN('p', "pids", &sched.skip_merge, |
3192 | "latency stats per pid instead of per comm"), | |
77f02f44 | 3193 | OPT_PARENT(sched_options) |
0e9b07e5 ACM |
3194 | }; |
3195 | const struct option replay_options[] = { | |
3196 | OPT_UINTEGER('r', "repeat", &sched.replay_repeat, | |
3197 | "repeat the workload replay N times (-1: infinite)"), | |
77f02f44 | 3198 | OPT_PARENT(sched_options) |
0e9b07e5 | 3199 | }; |
99623c62 JO |
3200 | const struct option map_options[] = { |
3201 | OPT_BOOLEAN(0, "compact", &sched.map.comp, | |
3202 | "map output in compact mode"), | |
a151a37a JO |
3203 | OPT_STRING(0, "color-pids", &sched.map.color_pids_str, "pids", |
3204 | "highlight given pids in map"), | |
cf294f24 JO |
3205 | OPT_STRING(0, "color-cpus", &sched.map.color_cpus_str, "cpus", |
3206 | "highlight given CPUs in map"), | |
73643bb6 JO |
3207 | OPT_STRING(0, "cpus", &sched.map.cpus_str, "cpus", |
3208 | "display given CPUs in map"), | |
77f02f44 | 3209 | OPT_PARENT(sched_options) |
99623c62 | 3210 | }; |
49394a2a DA |
3211 | const struct option timehist_options[] = { |
3212 | OPT_STRING('k', "vmlinux", &symbol_conf.vmlinux_name, | |
3213 | "file", "vmlinux pathname"), | |
3214 | OPT_STRING(0, "kallsyms", &symbol_conf.kallsyms_name, | |
3215 | "file", "kallsyms pathname"), | |
6c973c90 DA |
3216 | OPT_BOOLEAN('g', "call-graph", &sched.show_callchain, |
3217 | "Display call chains if present (default on)"), | |
3218 | OPT_UINTEGER(0, "max-stack", &sched.max_stack, | |
3219 | "Maximum number of functions to display backtrace."), | |
49394a2a DA |
3220 | OPT_STRING(0, "symfs", &symbol_conf.symfs, "directory", |
3221 | "Look for files with symbols relative to this directory"), | |
52df138c DA |
3222 | OPT_BOOLEAN('s', "summary", &sched.summary_only, |
3223 | "Show only syscall summary with statistics"), | |
3224 | OPT_BOOLEAN('S', "with-summary", &sched.summary, | |
3225 | "Show all syscalls and summary with statistics"), | |
fc1469f1 | 3226 | OPT_BOOLEAN('w', "wakeups", &sched.show_wakeups, "Show wakeup events"), |
350f54fa | 3227 | OPT_BOOLEAN('M', "migrations", &sched.show_migrations, "Show migration events"), |
a407b067 | 3228 | OPT_BOOLEAN('V', "cpu-visual", &sched.show_cpu_visual, "Add CPU visual"), |
07235f84 | 3229 | OPT_BOOLEAN('I', "idle-hist", &sched.idle_hist, "Show idle events only"), |
853b7407 DA |
3230 | OPT_STRING(0, "time", &sched.time_str, "str", |
3231 | "Time span for analysis (start,stop)"), | |
49394a2a DA |
3232 | OPT_PARENT(sched_options) |
3233 | }; | |
3234 | ||
0e9b07e5 ACM |
3235 | const char * const latency_usage[] = { |
3236 | "perf sched latency [<options>]", | |
3237 | NULL | |
3238 | }; | |
3239 | const char * const replay_usage[] = { | |
3240 | "perf sched replay [<options>]", | |
3241 | NULL | |
3242 | }; | |
99623c62 JO |
3243 | const char * const map_usage[] = { |
3244 | "perf sched map [<options>]", | |
3245 | NULL | |
3246 | }; | |
49394a2a DA |
3247 | const char * const timehist_usage[] = { |
3248 | "perf sched timehist [<options>]", | |
3249 | NULL | |
3250 | }; | |
a83edb2d | 3251 | const char *const sched_subcommands[] = { "record", "latency", "map", |
49394a2a DA |
3252 | "replay", "script", |
3253 | "timehist", NULL }; | |
a83edb2d RR |
3254 | const char *sched_usage[] = { |
3255 | NULL, | |
0e9b07e5 ACM |
3256 | NULL |
3257 | }; | |
3258 | struct trace_sched_handler lat_ops = { | |
3259 | .wakeup_event = latency_wakeup_event, | |
3260 | .switch_event = latency_switch_event, | |
3261 | .runtime_event = latency_runtime_event, | |
0e9b07e5 ACM |
3262 | .migrate_task_event = latency_migrate_task_event, |
3263 | }; | |
3264 | struct trace_sched_handler map_ops = { | |
3265 | .switch_event = map_switch_event, | |
3266 | }; | |
3267 | struct trace_sched_handler replay_ops = { | |
3268 | .wakeup_event = replay_wakeup_event, | |
3269 | .switch_event = replay_switch_event, | |
3270 | .fork_event = replay_fork_event, | |
3271 | }; | |
156a2b02 AH |
3272 | unsigned int i; |
3273 | ||
3274 | for (i = 0; i < ARRAY_SIZE(sched.curr_pid); i++) | |
3275 | sched.curr_pid[i] = -1; | |
0e9b07e5 | 3276 | |
a83edb2d RR |
3277 | argc = parse_options_subcommand(argc, argv, sched_options, sched_subcommands, |
3278 | sched_usage, PARSE_OPT_STOP_AT_NON_OPTION); | |
f2858d8a IM |
3279 | if (!argc) |
3280 | usage_with_options(sched_usage, sched_options); | |
0a02ad93 | 3281 | |
c0777c5a | 3282 | /* |
133dc4c3 | 3283 | * Aliased to 'perf script' for now: |
c0777c5a | 3284 | */ |
133dc4c3 IM |
3285 | if (!strcmp(argv[0], "script")) |
3286 | return cmd_script(argc, argv, prefix); | |
c0777c5a | 3287 | |
1fc35b29 IM |
3288 | if (!strncmp(argv[0], "rec", 3)) { |
3289 | return __cmd_record(argc, argv); | |
3290 | } else if (!strncmp(argv[0], "lat", 3)) { | |
0e9b07e5 | 3291 | sched.tp_handler = &lat_ops; |
f2858d8a IM |
3292 | if (argc > 1) { |
3293 | argc = parse_options(argc, argv, latency_options, latency_usage, 0); | |
3294 | if (argc) | |
3295 | usage_with_options(latency_usage, latency_options); | |
f2858d8a | 3296 | } |
0e9b07e5 ACM |
3297 | setup_sorting(&sched, latency_options, latency_usage); |
3298 | return perf_sched__lat(&sched); | |
0ec04e16 | 3299 | } else if (!strcmp(argv[0], "map")) { |
99623c62 | 3300 | if (argc) { |
a151a37a | 3301 | argc = parse_options(argc, argv, map_options, map_usage, 0); |
99623c62 JO |
3302 | if (argc) |
3303 | usage_with_options(map_usage, map_options); | |
3304 | } | |
0e9b07e5 ACM |
3305 | sched.tp_handler = &map_ops; |
3306 | setup_sorting(&sched, latency_options, latency_usage); | |
3307 | return perf_sched__map(&sched); | |
f2858d8a | 3308 | } else if (!strncmp(argv[0], "rep", 3)) { |
0e9b07e5 | 3309 | sched.tp_handler = &replay_ops; |
f2858d8a IM |
3310 | if (argc) { |
3311 | argc = parse_options(argc, argv, replay_options, replay_usage, 0); | |
3312 | if (argc) | |
3313 | usage_with_options(replay_usage, replay_options); | |
3314 | } | |
0e9b07e5 | 3315 | return perf_sched__replay(&sched); |
49394a2a DA |
3316 | } else if (!strcmp(argv[0], "timehist")) { |
3317 | if (argc) { | |
3318 | argc = parse_options(argc, argv, timehist_options, | |
3319 | timehist_usage, 0); | |
3320 | if (argc) | |
3321 | usage_with_options(timehist_usage, timehist_options); | |
3322 | } | |
fc1469f1 DA |
3323 | if (sched.show_wakeups && sched.summary_only) { |
3324 | pr_err(" Error: -s and -w are mutually exclusive.\n"); | |
3325 | parse_options_usage(timehist_usage, timehist_options, "s", true); | |
3326 | parse_options_usage(NULL, timehist_options, "w", true); | |
3327 | return -EINVAL; | |
3328 | } | |
3329 | ||
49394a2a | 3330 | return perf_sched__timehist(&sched); |
f2858d8a IM |
3331 | } else { |
3332 | usage_with_options(sched_usage, sched_options); | |
3333 | } | |
3334 | ||
ec156764 | 3335 | return 0; |
0a02ad93 | 3336 | } |