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