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1/* SPDX-License-Identifier: GPL-2.0 */
2#undef TRACE_SYSTEM
3#define TRACE_SYSTEM sched
4
5#if !defined(_TRACE_SCHED_H) || defined(TRACE_HEADER_MULTI_READ)
6#define _TRACE_SCHED_H
7
8#include <linux/kthread.h>
9#include <linux/sched/numa_balancing.h>
10#include <linux/tracepoint.h>
11#include <linux/binfmts.h>
12
13/*
14 * Tracepoint for calling kthread_stop, performed to end a kthread:
15 */
16TRACE_EVENT(sched_kthread_stop,
17
18 TP_PROTO(struct task_struct *t),
19
20 TP_ARGS(t),
21
22 TP_STRUCT__entry(
23 __array( char, comm, TASK_COMM_LEN )
24 __field( pid_t, pid )
25 ),
26
27 TP_fast_assign(
28 memcpy(__entry->comm, t->comm, TASK_COMM_LEN);
29 __entry->pid = t->pid;
30 ),
31
32 TP_printk("comm=%s pid=%d", __entry->comm, __entry->pid)
33);
34
35/*
36 * Tracepoint for the return value of the kthread stopping:
37 */
38TRACE_EVENT(sched_kthread_stop_ret,
39
40 TP_PROTO(int ret),
41
42 TP_ARGS(ret),
43
44 TP_STRUCT__entry(
45 __field( int, ret )
46 ),
47
48 TP_fast_assign(
49 __entry->ret = ret;
50 ),
51
52 TP_printk("ret=%d", __entry->ret)
53);
54
55/**
56 * sched_kthread_work_queue_work - called when a work gets queued
57 * @worker: pointer to the kthread_worker
58 * @work: pointer to struct kthread_work
59 *
60 * This event occurs when a work is queued immediately or once a
61 * delayed work is actually queued (ie: once the delay has been
62 * reached).
63 */
64TRACE_EVENT(sched_kthread_work_queue_work,
65
66 TP_PROTO(struct kthread_worker *worker,
67 struct kthread_work *work),
68
69 TP_ARGS(worker, work),
70
71 TP_STRUCT__entry(
72 __field( void *, work )
73 __field( void *, function)
74 __field( void *, worker)
75 ),
76
77 TP_fast_assign(
78 __entry->work = work;
79 __entry->function = work->func;
80 __entry->worker = worker;
81 ),
82
83 TP_printk("work struct=%p function=%ps worker=%p",
84 __entry->work, __entry->function, __entry->worker)
85);
86
87/**
88 * sched_kthread_work_execute_start - called immediately before the work callback
89 * @work: pointer to struct kthread_work
90 *
91 * Allows to track kthread work execution.
92 */
93TRACE_EVENT(sched_kthread_work_execute_start,
94
95 TP_PROTO(struct kthread_work *work),
96
97 TP_ARGS(work),
98
99 TP_STRUCT__entry(
100 __field( void *, work )
101 __field( void *, function)
102 ),
103
104 TP_fast_assign(
105 __entry->work = work;
106 __entry->function = work->func;
107 ),
108
109 TP_printk("work struct %p: function %ps", __entry->work, __entry->function)
110);
111
112/**
113 * sched_kthread_work_execute_end - called immediately after the work callback
114 * @work: pointer to struct work_struct
115 * @function: pointer to worker function
116 *
117 * Allows to track workqueue execution.
118 */
119TRACE_EVENT(sched_kthread_work_execute_end,
120
121 TP_PROTO(struct kthread_work *work, kthread_work_func_t function),
122
123 TP_ARGS(work, function),
124
125 TP_STRUCT__entry(
126 __field( void *, work )
127 __field( void *, function)
128 ),
129
130 TP_fast_assign(
131 __entry->work = work;
132 __entry->function = function;
133 ),
134
135 TP_printk("work struct %p: function %ps", __entry->work, __entry->function)
136);
137
138/*
139 * Tracepoint for waking up a task:
140 */
141DECLARE_EVENT_CLASS(sched_wakeup_template,
142
143 TP_PROTO(struct task_struct *p),
144
145 TP_ARGS(__perf_task(p)),
146
147 TP_STRUCT__entry(
148 __array( char, comm, TASK_COMM_LEN )
149 __field( pid_t, pid )
150 __field( int, prio )
151 __field( int, target_cpu )
152 ),
153
154 TP_fast_assign(
155 memcpy(__entry->comm, p->comm, TASK_COMM_LEN);
156 __entry->pid = p->pid;
157 __entry->prio = p->prio; /* XXX SCHED_DEADLINE */
158 __entry->target_cpu = task_cpu(p);
159 ),
160
161 TP_printk("comm=%s pid=%d prio=%d target_cpu=%03d",
162 __entry->comm, __entry->pid, __entry->prio,
163 __entry->target_cpu)
164);
165
166/*
167 * Tracepoint called when waking a task; this tracepoint is guaranteed to be
168 * called from the waking context.
169 */
170DEFINE_EVENT(sched_wakeup_template, sched_waking,
171 TP_PROTO(struct task_struct *p),
172 TP_ARGS(p));
173
174/*
175 * Tracepoint called when the task is actually woken; p->state == TASK_RUNNING.
176 * It is not always called from the waking context.
177 */
178DEFINE_EVENT(sched_wakeup_template, sched_wakeup,
179 TP_PROTO(struct task_struct *p),
180 TP_ARGS(p));
181
182/*
183 * Tracepoint for waking up a new task:
184 */
185DEFINE_EVENT(sched_wakeup_template, sched_wakeup_new,
186 TP_PROTO(struct task_struct *p),
187 TP_ARGS(p));
188
189#ifdef CREATE_TRACE_POINTS
190static inline long __trace_sched_switch_state(bool preempt,
191 unsigned int prev_state,
192 struct task_struct *p)
193{
194 unsigned int state;
195
196#ifdef CONFIG_SCHED_DEBUG
197 BUG_ON(p != current);
198#endif /* CONFIG_SCHED_DEBUG */
199
200 /*
201 * Preemption ignores task state, therefore preempted tasks are always
202 * RUNNING (we will not have dequeued if state != RUNNING).
203 */
204 if (preempt)
205 return TASK_REPORT_MAX;
206
207 /*
208 * task_state_index() uses fls() and returns a value from 0-8 range.
209 * Decrement it by 1 (except TASK_RUNNING state i.e 0) before using
210 * it for left shift operation to get the correct task->state
211 * mapping.
212 */
213 state = __task_state_index(prev_state, p->exit_state);
214
215 return state ? (1 << (state - 1)) : state;
216}
217#endif /* CREATE_TRACE_POINTS */
218
219/*
220 * Tracepoint for task switches, performed by the scheduler:
221 */
222TRACE_EVENT(sched_switch,
223
224 TP_PROTO(bool preempt,
225 struct task_struct *prev,
226 struct task_struct *next,
227 unsigned int prev_state),
228
229 TP_ARGS(preempt, prev, next, prev_state),
230
231 TP_STRUCT__entry(
232 __array( char, prev_comm, TASK_COMM_LEN )
233 __field( pid_t, prev_pid )
234 __field( int, prev_prio )
235 __field( long, prev_state )
236 __array( char, next_comm, TASK_COMM_LEN )
237 __field( pid_t, next_pid )
238 __field( int, next_prio )
239 ),
240
241 TP_fast_assign(
242 memcpy(__entry->next_comm, next->comm, TASK_COMM_LEN);
243 __entry->prev_pid = prev->pid;
244 __entry->prev_prio = prev->prio;
245 __entry->prev_state = __trace_sched_switch_state(preempt, prev_state, prev);
246 memcpy(__entry->prev_comm, prev->comm, TASK_COMM_LEN);
247 __entry->next_pid = next->pid;
248 __entry->next_prio = next->prio;
249 /* XXX SCHED_DEADLINE */
250 ),
251
252 TP_printk("prev_comm=%s prev_pid=%d prev_prio=%d prev_state=%s%s ==> next_comm=%s next_pid=%d next_prio=%d",
253 __entry->prev_comm, __entry->prev_pid, __entry->prev_prio,
254
255 (__entry->prev_state & (TASK_REPORT_MAX - 1)) ?
256 __print_flags(__entry->prev_state & (TASK_REPORT_MAX - 1), "|",
257 { TASK_INTERRUPTIBLE, "S" },
258 { TASK_UNINTERRUPTIBLE, "D" },
259 { __TASK_STOPPED, "T" },
260 { __TASK_TRACED, "t" },
261 { EXIT_DEAD, "X" },
262 { EXIT_ZOMBIE, "Z" },
263 { TASK_PARKED, "P" },
264 { TASK_DEAD, "I" }) :
265 "R",
266
267 __entry->prev_state & TASK_REPORT_MAX ? "+" : "",
268 __entry->next_comm, __entry->next_pid, __entry->next_prio)
269);
270
271/*
272 * Tracepoint for a task being migrated:
273 */
274TRACE_EVENT(sched_migrate_task,
275
276 TP_PROTO(struct task_struct *p, int dest_cpu),
277
278 TP_ARGS(p, dest_cpu),
279
280 TP_STRUCT__entry(
281 __array( char, comm, TASK_COMM_LEN )
282 __field( pid_t, pid )
283 __field( int, prio )
284 __field( int, orig_cpu )
285 __field( int, dest_cpu )
286 ),
287
288 TP_fast_assign(
289 memcpy(__entry->comm, p->comm, TASK_COMM_LEN);
290 __entry->pid = p->pid;
291 __entry->prio = p->prio; /* XXX SCHED_DEADLINE */
292 __entry->orig_cpu = task_cpu(p);
293 __entry->dest_cpu = dest_cpu;
294 ),
295
296 TP_printk("comm=%s pid=%d prio=%d orig_cpu=%d dest_cpu=%d",
297 __entry->comm, __entry->pid, __entry->prio,
298 __entry->orig_cpu, __entry->dest_cpu)
299);
300
301DECLARE_EVENT_CLASS(sched_process_template,
302
303 TP_PROTO(struct task_struct *p),
304
305 TP_ARGS(p),
306
307 TP_STRUCT__entry(
308 __array( char, comm, TASK_COMM_LEN )
309 __field( pid_t, pid )
310 __field( int, prio )
311 ),
312
313 TP_fast_assign(
314 memcpy(__entry->comm, p->comm, TASK_COMM_LEN);
315 __entry->pid = p->pid;
316 __entry->prio = p->prio; /* XXX SCHED_DEADLINE */
317 ),
318
319 TP_printk("comm=%s pid=%d prio=%d",
320 __entry->comm, __entry->pid, __entry->prio)
321);
322
323/*
324 * Tracepoint for freeing a task:
325 */
326DEFINE_EVENT(sched_process_template, sched_process_free,
327 TP_PROTO(struct task_struct *p),
328 TP_ARGS(p));
329
330/*
331 * Tracepoint for a task exiting:
332 */
333DEFINE_EVENT(sched_process_template, sched_process_exit,
334 TP_PROTO(struct task_struct *p),
335 TP_ARGS(p));
336
337/*
338 * Tracepoint for waiting on task to unschedule:
339 */
340DEFINE_EVENT(sched_process_template, sched_wait_task,
341 TP_PROTO(struct task_struct *p),
342 TP_ARGS(p));
343
344/*
345 * Tracepoint for a waiting task:
346 */
347TRACE_EVENT(sched_process_wait,
348
349 TP_PROTO(struct pid *pid),
350
351 TP_ARGS(pid),
352
353 TP_STRUCT__entry(
354 __array( char, comm, TASK_COMM_LEN )
355 __field( pid_t, pid )
356 __field( int, prio )
357 ),
358
359 TP_fast_assign(
360 memcpy(__entry->comm, current->comm, TASK_COMM_LEN);
361 __entry->pid = pid_nr(pid);
362 __entry->prio = current->prio; /* XXX SCHED_DEADLINE */
363 ),
364
365 TP_printk("comm=%s pid=%d prio=%d",
366 __entry->comm, __entry->pid, __entry->prio)
367);
368
369/*
370 * Tracepoint for kernel_clone:
371 */
372TRACE_EVENT(sched_process_fork,
373
374 TP_PROTO(struct task_struct *parent, struct task_struct *child),
375
376 TP_ARGS(parent, child),
377
378 TP_STRUCT__entry(
379 __array( char, parent_comm, TASK_COMM_LEN )
380 __field( pid_t, parent_pid )
381 __array( char, child_comm, TASK_COMM_LEN )
382 __field( pid_t, child_pid )
383 ),
384
385 TP_fast_assign(
386 memcpy(__entry->parent_comm, parent->comm, TASK_COMM_LEN);
387 __entry->parent_pid = parent->pid;
388 memcpy(__entry->child_comm, child->comm, TASK_COMM_LEN);
389 __entry->child_pid = child->pid;
390 ),
391
392 TP_printk("comm=%s pid=%d child_comm=%s child_pid=%d",
393 __entry->parent_comm, __entry->parent_pid,
394 __entry->child_comm, __entry->child_pid)
395);
396
397/*
398 * Tracepoint for exec:
399 */
400TRACE_EVENT(sched_process_exec,
401
402 TP_PROTO(struct task_struct *p, pid_t old_pid,
403 struct linux_binprm *bprm),
404
405 TP_ARGS(p, old_pid, bprm),
406
407 TP_STRUCT__entry(
408 __string( filename, bprm->filename )
409 __field( pid_t, pid )
410 __field( pid_t, old_pid )
411 ),
412
413 TP_fast_assign(
414 __assign_str(filename, bprm->filename);
415 __entry->pid = p->pid;
416 __entry->old_pid = old_pid;
417 ),
418
419 TP_printk("filename=%s pid=%d old_pid=%d", __get_str(filename),
420 __entry->pid, __entry->old_pid)
421);
422
423
424#ifdef CONFIG_SCHEDSTATS
425#define DEFINE_EVENT_SCHEDSTAT DEFINE_EVENT
426#define DECLARE_EVENT_CLASS_SCHEDSTAT DECLARE_EVENT_CLASS
427#else
428#define DEFINE_EVENT_SCHEDSTAT DEFINE_EVENT_NOP
429#define DECLARE_EVENT_CLASS_SCHEDSTAT DECLARE_EVENT_CLASS_NOP
430#endif
431
432/*
433 * XXX the below sched_stat tracepoints only apply to SCHED_OTHER/BATCH/IDLE
434 * adding sched_stat support to SCHED_FIFO/RR would be welcome.
435 */
436DECLARE_EVENT_CLASS_SCHEDSTAT(sched_stat_template,
437
438 TP_PROTO(struct task_struct *tsk, u64 delay),
439
440 TP_ARGS(__perf_task(tsk), __perf_count(delay)),
441
442 TP_STRUCT__entry(
443 __array( char, comm, TASK_COMM_LEN )
444 __field( pid_t, pid )
445 __field( u64, delay )
446 ),
447
448 TP_fast_assign(
449 memcpy(__entry->comm, tsk->comm, TASK_COMM_LEN);
450 __entry->pid = tsk->pid;
451 __entry->delay = delay;
452 ),
453
454 TP_printk("comm=%s pid=%d delay=%Lu [ns]",
455 __entry->comm, __entry->pid,
456 (unsigned long long)__entry->delay)
457);
458
459/*
460 * Tracepoint for accounting wait time (time the task is runnable
461 * but not actually running due to scheduler contention).
462 */
463DEFINE_EVENT_SCHEDSTAT(sched_stat_template, sched_stat_wait,
464 TP_PROTO(struct task_struct *tsk, u64 delay),
465 TP_ARGS(tsk, delay));
466
467/*
468 * Tracepoint for accounting sleep time (time the task is not runnable,
469 * including iowait, see below).
470 */
471DEFINE_EVENT_SCHEDSTAT(sched_stat_template, sched_stat_sleep,
472 TP_PROTO(struct task_struct *tsk, u64 delay),
473 TP_ARGS(tsk, delay));
474
475/*
476 * Tracepoint for accounting iowait time (time the task is not runnable
477 * due to waiting on IO to complete).
478 */
479DEFINE_EVENT_SCHEDSTAT(sched_stat_template, sched_stat_iowait,
480 TP_PROTO(struct task_struct *tsk, u64 delay),
481 TP_ARGS(tsk, delay));
482
483/*
484 * Tracepoint for accounting blocked time (time the task is in uninterruptible).
485 */
486DEFINE_EVENT_SCHEDSTAT(sched_stat_template, sched_stat_blocked,
487 TP_PROTO(struct task_struct *tsk, u64 delay),
488 TP_ARGS(tsk, delay));
489
490/*
491 * Tracepoint for accounting runtime (time the task is executing
492 * on a CPU).
493 */
494DECLARE_EVENT_CLASS(sched_stat_runtime,
495
496 TP_PROTO(struct task_struct *tsk, u64 runtime, u64 vruntime),
497
498 TP_ARGS(tsk, __perf_count(runtime), vruntime),
499
500 TP_STRUCT__entry(
501 __array( char, comm, TASK_COMM_LEN )
502 __field( pid_t, pid )
503 __field( u64, runtime )
504 __field( u64, vruntime )
505 ),
506
507 TP_fast_assign(
508 memcpy(__entry->comm, tsk->comm, TASK_COMM_LEN);
509 __entry->pid = tsk->pid;
510 __entry->runtime = runtime;
511 __entry->vruntime = vruntime;
512 ),
513
514 TP_printk("comm=%s pid=%d runtime=%Lu [ns] vruntime=%Lu [ns]",
515 __entry->comm, __entry->pid,
516 (unsigned long long)__entry->runtime,
517 (unsigned long long)__entry->vruntime)
518);
519
520DEFINE_EVENT(sched_stat_runtime, sched_stat_runtime,
521 TP_PROTO(struct task_struct *tsk, u64 runtime, u64 vruntime),
522 TP_ARGS(tsk, runtime, vruntime));
523
524/*
525 * Tracepoint for showing priority inheritance modifying a tasks
526 * priority.
527 */
528TRACE_EVENT(sched_pi_setprio,
529
530 TP_PROTO(struct task_struct *tsk, struct task_struct *pi_task),
531
532 TP_ARGS(tsk, pi_task),
533
534 TP_STRUCT__entry(
535 __array( char, comm, TASK_COMM_LEN )
536 __field( pid_t, pid )
537 __field( int, oldprio )
538 __field( int, newprio )
539 ),
540
541 TP_fast_assign(
542 memcpy(__entry->comm, tsk->comm, TASK_COMM_LEN);
543 __entry->pid = tsk->pid;
544 __entry->oldprio = tsk->prio;
545 __entry->newprio = pi_task ?
546 min(tsk->normal_prio, pi_task->prio) :
547 tsk->normal_prio;
548 /* XXX SCHED_DEADLINE bits missing */
549 ),
550
551 TP_printk("comm=%s pid=%d oldprio=%d newprio=%d",
552 __entry->comm, __entry->pid,
553 __entry->oldprio, __entry->newprio)
554);
555
556#ifdef CONFIG_DETECT_HUNG_TASK
557TRACE_EVENT(sched_process_hang,
558 TP_PROTO(struct task_struct *tsk),
559 TP_ARGS(tsk),
560
561 TP_STRUCT__entry(
562 __array( char, comm, TASK_COMM_LEN )
563 __field( pid_t, pid )
564 ),
565
566 TP_fast_assign(
567 memcpy(__entry->comm, tsk->comm, TASK_COMM_LEN);
568 __entry->pid = tsk->pid;
569 ),
570
571 TP_printk("comm=%s pid=%d", __entry->comm, __entry->pid)
572);
573#endif /* CONFIG_DETECT_HUNG_TASK */
574
575/*
576 * Tracks migration of tasks from one runqueue to another. Can be used to
577 * detect if automatic NUMA balancing is bouncing between nodes.
578 */
579TRACE_EVENT(sched_move_numa,
580
581 TP_PROTO(struct task_struct *tsk, int src_cpu, int dst_cpu),
582
583 TP_ARGS(tsk, src_cpu, dst_cpu),
584
585 TP_STRUCT__entry(
586 __field( pid_t, pid )
587 __field( pid_t, tgid )
588 __field( pid_t, ngid )
589 __field( int, src_cpu )
590 __field( int, src_nid )
591 __field( int, dst_cpu )
592 __field( int, dst_nid )
593 ),
594
595 TP_fast_assign(
596 __entry->pid = task_pid_nr(tsk);
597 __entry->tgid = task_tgid_nr(tsk);
598 __entry->ngid = task_numa_group_id(tsk);
599 __entry->src_cpu = src_cpu;
600 __entry->src_nid = cpu_to_node(src_cpu);
601 __entry->dst_cpu = dst_cpu;
602 __entry->dst_nid = cpu_to_node(dst_cpu);
603 ),
604
605 TP_printk("pid=%d tgid=%d ngid=%d src_cpu=%d src_nid=%d dst_cpu=%d dst_nid=%d",
606 __entry->pid, __entry->tgid, __entry->ngid,
607 __entry->src_cpu, __entry->src_nid,
608 __entry->dst_cpu, __entry->dst_nid)
609);
610
611DECLARE_EVENT_CLASS(sched_numa_pair_template,
612
613 TP_PROTO(struct task_struct *src_tsk, int src_cpu,
614 struct task_struct *dst_tsk, int dst_cpu),
615
616 TP_ARGS(src_tsk, src_cpu, dst_tsk, dst_cpu),
617
618 TP_STRUCT__entry(
619 __field( pid_t, src_pid )
620 __field( pid_t, src_tgid )
621 __field( pid_t, src_ngid )
622 __field( int, src_cpu )
623 __field( int, src_nid )
624 __field( pid_t, dst_pid )
625 __field( pid_t, dst_tgid )
626 __field( pid_t, dst_ngid )
627 __field( int, dst_cpu )
628 __field( int, dst_nid )
629 ),
630
631 TP_fast_assign(
632 __entry->src_pid = task_pid_nr(src_tsk);
633 __entry->src_tgid = task_tgid_nr(src_tsk);
634 __entry->src_ngid = task_numa_group_id(src_tsk);
635 __entry->src_cpu = src_cpu;
636 __entry->src_nid = cpu_to_node(src_cpu);
637 __entry->dst_pid = dst_tsk ? task_pid_nr(dst_tsk) : 0;
638 __entry->dst_tgid = dst_tsk ? task_tgid_nr(dst_tsk) : 0;
639 __entry->dst_ngid = dst_tsk ? task_numa_group_id(dst_tsk) : 0;
640 __entry->dst_cpu = dst_cpu;
641 __entry->dst_nid = dst_cpu >= 0 ? cpu_to_node(dst_cpu) : -1;
642 ),
643
644 TP_printk("src_pid=%d src_tgid=%d src_ngid=%d src_cpu=%d src_nid=%d dst_pid=%d dst_tgid=%d dst_ngid=%d dst_cpu=%d dst_nid=%d",
645 __entry->src_pid, __entry->src_tgid, __entry->src_ngid,
646 __entry->src_cpu, __entry->src_nid,
647 __entry->dst_pid, __entry->dst_tgid, __entry->dst_ngid,
648 __entry->dst_cpu, __entry->dst_nid)
649);
650
651DEFINE_EVENT(sched_numa_pair_template, sched_stick_numa,
652
653 TP_PROTO(struct task_struct *src_tsk, int src_cpu,
654 struct task_struct *dst_tsk, int dst_cpu),
655
656 TP_ARGS(src_tsk, src_cpu, dst_tsk, dst_cpu)
657);
658
659DEFINE_EVENT(sched_numa_pair_template, sched_swap_numa,
660
661 TP_PROTO(struct task_struct *src_tsk, int src_cpu,
662 struct task_struct *dst_tsk, int dst_cpu),
663
664 TP_ARGS(src_tsk, src_cpu, dst_tsk, dst_cpu)
665);
666
667
668/*
669 * Tracepoint for waking a polling cpu without an IPI.
670 */
671TRACE_EVENT(sched_wake_idle_without_ipi,
672
673 TP_PROTO(int cpu),
674
675 TP_ARGS(cpu),
676
677 TP_STRUCT__entry(
678 __field( int, cpu )
679 ),
680
681 TP_fast_assign(
682 __entry->cpu = cpu;
683 ),
684
685 TP_printk("cpu=%d", __entry->cpu)
686);
687
688/*
689 * Following tracepoints are not exported in tracefs and provide hooking
690 * mechanisms only for testing and debugging purposes.
691 *
692 * Postfixed with _tp to make them easily identifiable in the code.
693 */
694DECLARE_TRACE(pelt_cfs_tp,
695 TP_PROTO(struct cfs_rq *cfs_rq),
696 TP_ARGS(cfs_rq));
697
698DECLARE_TRACE(pelt_rt_tp,
699 TP_PROTO(struct rq *rq),
700 TP_ARGS(rq));
701
702DECLARE_TRACE(pelt_dl_tp,
703 TP_PROTO(struct rq *rq),
704 TP_ARGS(rq));
705
706DECLARE_TRACE(pelt_thermal_tp,
707 TP_PROTO(struct rq *rq),
708 TP_ARGS(rq));
709
710DECLARE_TRACE(pelt_irq_tp,
711 TP_PROTO(struct rq *rq),
712 TP_ARGS(rq));
713
714DECLARE_TRACE(pelt_se_tp,
715 TP_PROTO(struct sched_entity *se),
716 TP_ARGS(se));
717
718DECLARE_TRACE(sched_cpu_capacity_tp,
719 TP_PROTO(struct rq *rq),
720 TP_ARGS(rq));
721
722DECLARE_TRACE(sched_overutilized_tp,
723 TP_PROTO(struct root_domain *rd, bool overutilized),
724 TP_ARGS(rd, overutilized));
725
726DECLARE_TRACE(sched_util_est_cfs_tp,
727 TP_PROTO(struct cfs_rq *cfs_rq),
728 TP_ARGS(cfs_rq));
729
730DECLARE_TRACE(sched_util_est_se_tp,
731 TP_PROTO(struct sched_entity *se),
732 TP_ARGS(se));
733
734DECLARE_TRACE(sched_update_nr_running_tp,
735 TP_PROTO(struct rq *rq, int change),
736 TP_ARGS(rq, change));
737
738#endif /* _TRACE_SCHED_H */
739
740/* This part must be outside protection */
741#include <trace/define_trace.h>
1/* SPDX-License-Identifier: GPL-2.0 */
2#undef TRACE_SYSTEM
3#define TRACE_SYSTEM sched
4
5#if !defined(_TRACE_SCHED_H) || defined(TRACE_HEADER_MULTI_READ)
6#define _TRACE_SCHED_H
7
8#include <linux/sched/numa_balancing.h>
9#include <linux/tracepoint.h>
10#include <linux/binfmts.h>
11
12/*
13 * Tracepoint for calling kthread_stop, performed to end a kthread:
14 */
15TRACE_EVENT(sched_kthread_stop,
16
17 TP_PROTO(struct task_struct *t),
18
19 TP_ARGS(t),
20
21 TP_STRUCT__entry(
22 __array( char, comm, TASK_COMM_LEN )
23 __field( pid_t, pid )
24 ),
25
26 TP_fast_assign(
27 memcpy(__entry->comm, t->comm, TASK_COMM_LEN);
28 __entry->pid = t->pid;
29 ),
30
31 TP_printk("comm=%s pid=%d", __entry->comm, __entry->pid)
32);
33
34/*
35 * Tracepoint for the return value of the kthread stopping:
36 */
37TRACE_EVENT(sched_kthread_stop_ret,
38
39 TP_PROTO(int ret),
40
41 TP_ARGS(ret),
42
43 TP_STRUCT__entry(
44 __field( int, ret )
45 ),
46
47 TP_fast_assign(
48 __entry->ret = ret;
49 ),
50
51 TP_printk("ret=%d", __entry->ret)
52);
53
54/*
55 * Tracepoint for waking up a task:
56 */
57DECLARE_EVENT_CLASS(sched_wakeup_template,
58
59 TP_PROTO(struct task_struct *p),
60
61 TP_ARGS(__perf_task(p)),
62
63 TP_STRUCT__entry(
64 __array( char, comm, TASK_COMM_LEN )
65 __field( pid_t, pid )
66 __field( int, prio )
67 __field( int, success )
68 __field( int, target_cpu )
69 ),
70
71 TP_fast_assign(
72 memcpy(__entry->comm, p->comm, TASK_COMM_LEN);
73 __entry->pid = p->pid;
74 __entry->prio = p->prio; /* XXX SCHED_DEADLINE */
75 __entry->success = 1; /* rudiment, kill when possible */
76 __entry->target_cpu = task_cpu(p);
77 ),
78
79 TP_printk("comm=%s pid=%d prio=%d target_cpu=%03d",
80 __entry->comm, __entry->pid, __entry->prio,
81 __entry->target_cpu)
82);
83
84/*
85 * Tracepoint called when waking a task; this tracepoint is guaranteed to be
86 * called from the waking context.
87 */
88DEFINE_EVENT(sched_wakeup_template, sched_waking,
89 TP_PROTO(struct task_struct *p),
90 TP_ARGS(p));
91
92/*
93 * Tracepoint called when the task is actually woken; p->state == TASK_RUNNNG.
94 * It it not always called from the waking context.
95 */
96DEFINE_EVENT(sched_wakeup_template, sched_wakeup,
97 TP_PROTO(struct task_struct *p),
98 TP_ARGS(p));
99
100/*
101 * Tracepoint for waking up a new task:
102 */
103DEFINE_EVENT(sched_wakeup_template, sched_wakeup_new,
104 TP_PROTO(struct task_struct *p),
105 TP_ARGS(p));
106
107#ifdef CREATE_TRACE_POINTS
108static inline long __trace_sched_switch_state(bool preempt, struct task_struct *p)
109{
110#ifdef CONFIG_SCHED_DEBUG
111 BUG_ON(p != current);
112#endif /* CONFIG_SCHED_DEBUG */
113
114 /*
115 * Preemption ignores task state, therefore preempted tasks are always
116 * RUNNING (we will not have dequeued if state != RUNNING).
117 */
118 if (preempt)
119 return TASK_REPORT_MAX;
120
121 return 1 << task_state_index(p);
122}
123#endif /* CREATE_TRACE_POINTS */
124
125/*
126 * Tracepoint for task switches, performed by the scheduler:
127 */
128TRACE_EVENT(sched_switch,
129
130 TP_PROTO(bool preempt,
131 struct task_struct *prev,
132 struct task_struct *next),
133
134 TP_ARGS(preempt, prev, next),
135
136 TP_STRUCT__entry(
137 __array( char, prev_comm, TASK_COMM_LEN )
138 __field( pid_t, prev_pid )
139 __field( int, prev_prio )
140 __field( long, prev_state )
141 __array( char, next_comm, TASK_COMM_LEN )
142 __field( pid_t, next_pid )
143 __field( int, next_prio )
144 ),
145
146 TP_fast_assign(
147 memcpy(__entry->next_comm, next->comm, TASK_COMM_LEN);
148 __entry->prev_pid = prev->pid;
149 __entry->prev_prio = prev->prio;
150 __entry->prev_state = __trace_sched_switch_state(preempt, prev);
151 memcpy(__entry->prev_comm, prev->comm, TASK_COMM_LEN);
152 __entry->next_pid = next->pid;
153 __entry->next_prio = next->prio;
154 /* XXX SCHED_DEADLINE */
155 ),
156
157 TP_printk("prev_comm=%s prev_pid=%d prev_prio=%d prev_state=%s%s ==> next_comm=%s next_pid=%d next_prio=%d",
158 __entry->prev_comm, __entry->prev_pid, __entry->prev_prio,
159
160 (__entry->prev_state & (TASK_REPORT_MAX - 1)) ?
161 __print_flags(__entry->prev_state & (TASK_REPORT_MAX - 1), "|",
162 { 0x01, "S" }, { 0x02, "D" }, { 0x04, "T" },
163 { 0x08, "t" }, { 0x10, "X" }, { 0x20, "Z" },
164 { 0x40, "P" }, { 0x80, "I" }) :
165 "R",
166
167 __entry->prev_state & TASK_REPORT_MAX ? "+" : "",
168 __entry->next_comm, __entry->next_pid, __entry->next_prio)
169);
170
171/*
172 * Tracepoint for a task being migrated:
173 */
174TRACE_EVENT(sched_migrate_task,
175
176 TP_PROTO(struct task_struct *p, int dest_cpu),
177
178 TP_ARGS(p, dest_cpu),
179
180 TP_STRUCT__entry(
181 __array( char, comm, TASK_COMM_LEN )
182 __field( pid_t, pid )
183 __field( int, prio )
184 __field( int, orig_cpu )
185 __field( int, dest_cpu )
186 ),
187
188 TP_fast_assign(
189 memcpy(__entry->comm, p->comm, TASK_COMM_LEN);
190 __entry->pid = p->pid;
191 __entry->prio = p->prio; /* XXX SCHED_DEADLINE */
192 __entry->orig_cpu = task_cpu(p);
193 __entry->dest_cpu = dest_cpu;
194 ),
195
196 TP_printk("comm=%s pid=%d prio=%d orig_cpu=%d dest_cpu=%d",
197 __entry->comm, __entry->pid, __entry->prio,
198 __entry->orig_cpu, __entry->dest_cpu)
199);
200
201DECLARE_EVENT_CLASS(sched_process_template,
202
203 TP_PROTO(struct task_struct *p),
204
205 TP_ARGS(p),
206
207 TP_STRUCT__entry(
208 __array( char, comm, TASK_COMM_LEN )
209 __field( pid_t, pid )
210 __field( int, prio )
211 ),
212
213 TP_fast_assign(
214 memcpy(__entry->comm, p->comm, TASK_COMM_LEN);
215 __entry->pid = p->pid;
216 __entry->prio = p->prio; /* XXX SCHED_DEADLINE */
217 ),
218
219 TP_printk("comm=%s pid=%d prio=%d",
220 __entry->comm, __entry->pid, __entry->prio)
221);
222
223/*
224 * Tracepoint for freeing a task:
225 */
226DEFINE_EVENT(sched_process_template, sched_process_free,
227 TP_PROTO(struct task_struct *p),
228 TP_ARGS(p));
229
230
231/*
232 * Tracepoint for a task exiting:
233 */
234DEFINE_EVENT(sched_process_template, sched_process_exit,
235 TP_PROTO(struct task_struct *p),
236 TP_ARGS(p));
237
238/*
239 * Tracepoint for waiting on task to unschedule:
240 */
241DEFINE_EVENT(sched_process_template, sched_wait_task,
242 TP_PROTO(struct task_struct *p),
243 TP_ARGS(p));
244
245/*
246 * Tracepoint for a waiting task:
247 */
248TRACE_EVENT(sched_process_wait,
249
250 TP_PROTO(struct pid *pid),
251
252 TP_ARGS(pid),
253
254 TP_STRUCT__entry(
255 __array( char, comm, TASK_COMM_LEN )
256 __field( pid_t, pid )
257 __field( int, prio )
258 ),
259
260 TP_fast_assign(
261 memcpy(__entry->comm, current->comm, TASK_COMM_LEN);
262 __entry->pid = pid_nr(pid);
263 __entry->prio = current->prio; /* XXX SCHED_DEADLINE */
264 ),
265
266 TP_printk("comm=%s pid=%d prio=%d",
267 __entry->comm, __entry->pid, __entry->prio)
268);
269
270/*
271 * Tracepoint for do_fork:
272 */
273TRACE_EVENT(sched_process_fork,
274
275 TP_PROTO(struct task_struct *parent, struct task_struct *child),
276
277 TP_ARGS(parent, child),
278
279 TP_STRUCT__entry(
280 __array( char, parent_comm, TASK_COMM_LEN )
281 __field( pid_t, parent_pid )
282 __array( char, child_comm, TASK_COMM_LEN )
283 __field( pid_t, child_pid )
284 ),
285
286 TP_fast_assign(
287 memcpy(__entry->parent_comm, parent->comm, TASK_COMM_LEN);
288 __entry->parent_pid = parent->pid;
289 memcpy(__entry->child_comm, child->comm, TASK_COMM_LEN);
290 __entry->child_pid = child->pid;
291 ),
292
293 TP_printk("comm=%s pid=%d child_comm=%s child_pid=%d",
294 __entry->parent_comm, __entry->parent_pid,
295 __entry->child_comm, __entry->child_pid)
296);
297
298/*
299 * Tracepoint for exec:
300 */
301TRACE_EVENT(sched_process_exec,
302
303 TP_PROTO(struct task_struct *p, pid_t old_pid,
304 struct linux_binprm *bprm),
305
306 TP_ARGS(p, old_pid, bprm),
307
308 TP_STRUCT__entry(
309 __string( filename, bprm->filename )
310 __field( pid_t, pid )
311 __field( pid_t, old_pid )
312 ),
313
314 TP_fast_assign(
315 __assign_str(filename, bprm->filename);
316 __entry->pid = p->pid;
317 __entry->old_pid = old_pid;
318 ),
319
320 TP_printk("filename=%s pid=%d old_pid=%d", __get_str(filename),
321 __entry->pid, __entry->old_pid)
322);
323
324/*
325 * XXX the below sched_stat tracepoints only apply to SCHED_OTHER/BATCH/IDLE
326 * adding sched_stat support to SCHED_FIFO/RR would be welcome.
327 */
328DECLARE_EVENT_CLASS(sched_stat_template,
329
330 TP_PROTO(struct task_struct *tsk, u64 delay),
331
332 TP_ARGS(__perf_task(tsk), __perf_count(delay)),
333
334 TP_STRUCT__entry(
335 __array( char, comm, TASK_COMM_LEN )
336 __field( pid_t, pid )
337 __field( u64, delay )
338 ),
339
340 TP_fast_assign(
341 memcpy(__entry->comm, tsk->comm, TASK_COMM_LEN);
342 __entry->pid = tsk->pid;
343 __entry->delay = delay;
344 ),
345
346 TP_printk("comm=%s pid=%d delay=%Lu [ns]",
347 __entry->comm, __entry->pid,
348 (unsigned long long)__entry->delay)
349);
350
351
352/*
353 * Tracepoint for accounting wait time (time the task is runnable
354 * but not actually running due to scheduler contention).
355 */
356DEFINE_EVENT(sched_stat_template, sched_stat_wait,
357 TP_PROTO(struct task_struct *tsk, u64 delay),
358 TP_ARGS(tsk, delay));
359
360/*
361 * Tracepoint for accounting sleep time (time the task is not runnable,
362 * including iowait, see below).
363 */
364DEFINE_EVENT(sched_stat_template, sched_stat_sleep,
365 TP_PROTO(struct task_struct *tsk, u64 delay),
366 TP_ARGS(tsk, delay));
367
368/*
369 * Tracepoint for accounting iowait time (time the task is not runnable
370 * due to waiting on IO to complete).
371 */
372DEFINE_EVENT(sched_stat_template, sched_stat_iowait,
373 TP_PROTO(struct task_struct *tsk, u64 delay),
374 TP_ARGS(tsk, delay));
375
376/*
377 * Tracepoint for accounting blocked time (time the task is in uninterruptible).
378 */
379DEFINE_EVENT(sched_stat_template, sched_stat_blocked,
380 TP_PROTO(struct task_struct *tsk, u64 delay),
381 TP_ARGS(tsk, delay));
382
383/*
384 * Tracepoint for accounting runtime (time the task is executing
385 * on a CPU).
386 */
387DECLARE_EVENT_CLASS(sched_stat_runtime,
388
389 TP_PROTO(struct task_struct *tsk, u64 runtime, u64 vruntime),
390
391 TP_ARGS(tsk, __perf_count(runtime), vruntime),
392
393 TP_STRUCT__entry(
394 __array( char, comm, TASK_COMM_LEN )
395 __field( pid_t, pid )
396 __field( u64, runtime )
397 __field( u64, vruntime )
398 ),
399
400 TP_fast_assign(
401 memcpy(__entry->comm, tsk->comm, TASK_COMM_LEN);
402 __entry->pid = tsk->pid;
403 __entry->runtime = runtime;
404 __entry->vruntime = vruntime;
405 ),
406
407 TP_printk("comm=%s pid=%d runtime=%Lu [ns] vruntime=%Lu [ns]",
408 __entry->comm, __entry->pid,
409 (unsigned long long)__entry->runtime,
410 (unsigned long long)__entry->vruntime)
411);
412
413DEFINE_EVENT(sched_stat_runtime, sched_stat_runtime,
414 TP_PROTO(struct task_struct *tsk, u64 runtime, u64 vruntime),
415 TP_ARGS(tsk, runtime, vruntime));
416
417/*
418 * Tracepoint for showing priority inheritance modifying a tasks
419 * priority.
420 */
421TRACE_EVENT(sched_pi_setprio,
422
423 TP_PROTO(struct task_struct *tsk, struct task_struct *pi_task),
424
425 TP_ARGS(tsk, pi_task),
426
427 TP_STRUCT__entry(
428 __array( char, comm, TASK_COMM_LEN )
429 __field( pid_t, pid )
430 __field( int, oldprio )
431 __field( int, newprio )
432 ),
433
434 TP_fast_assign(
435 memcpy(__entry->comm, tsk->comm, TASK_COMM_LEN);
436 __entry->pid = tsk->pid;
437 __entry->oldprio = tsk->prio;
438 __entry->newprio = pi_task ?
439 min(tsk->normal_prio, pi_task->prio) :
440 tsk->normal_prio;
441 /* XXX SCHED_DEADLINE bits missing */
442 ),
443
444 TP_printk("comm=%s pid=%d oldprio=%d newprio=%d",
445 __entry->comm, __entry->pid,
446 __entry->oldprio, __entry->newprio)
447);
448
449#ifdef CONFIG_DETECT_HUNG_TASK
450TRACE_EVENT(sched_process_hang,
451 TP_PROTO(struct task_struct *tsk),
452 TP_ARGS(tsk),
453
454 TP_STRUCT__entry(
455 __array( char, comm, TASK_COMM_LEN )
456 __field( pid_t, pid )
457 ),
458
459 TP_fast_assign(
460 memcpy(__entry->comm, tsk->comm, TASK_COMM_LEN);
461 __entry->pid = tsk->pid;
462 ),
463
464 TP_printk("comm=%s pid=%d", __entry->comm, __entry->pid)
465);
466#endif /* CONFIG_DETECT_HUNG_TASK */
467
468DECLARE_EVENT_CLASS(sched_move_task_template,
469
470 TP_PROTO(struct task_struct *tsk, int src_cpu, int dst_cpu),
471
472 TP_ARGS(tsk, src_cpu, dst_cpu),
473
474 TP_STRUCT__entry(
475 __field( pid_t, pid )
476 __field( pid_t, tgid )
477 __field( pid_t, ngid )
478 __field( int, src_cpu )
479 __field( int, src_nid )
480 __field( int, dst_cpu )
481 __field( int, dst_nid )
482 ),
483
484 TP_fast_assign(
485 __entry->pid = task_pid_nr(tsk);
486 __entry->tgid = task_tgid_nr(tsk);
487 __entry->ngid = task_numa_group_id(tsk);
488 __entry->src_cpu = src_cpu;
489 __entry->src_nid = cpu_to_node(src_cpu);
490 __entry->dst_cpu = dst_cpu;
491 __entry->dst_nid = cpu_to_node(dst_cpu);
492 ),
493
494 TP_printk("pid=%d tgid=%d ngid=%d src_cpu=%d src_nid=%d dst_cpu=%d dst_nid=%d",
495 __entry->pid, __entry->tgid, __entry->ngid,
496 __entry->src_cpu, __entry->src_nid,
497 __entry->dst_cpu, __entry->dst_nid)
498);
499
500/*
501 * Tracks migration of tasks from one runqueue to another. Can be used to
502 * detect if automatic NUMA balancing is bouncing between nodes
503 */
504DEFINE_EVENT(sched_move_task_template, sched_move_numa,
505 TP_PROTO(struct task_struct *tsk, int src_cpu, int dst_cpu),
506
507 TP_ARGS(tsk, src_cpu, dst_cpu)
508);
509
510DEFINE_EVENT(sched_move_task_template, sched_stick_numa,
511 TP_PROTO(struct task_struct *tsk, int src_cpu, int dst_cpu),
512
513 TP_ARGS(tsk, src_cpu, dst_cpu)
514);
515
516TRACE_EVENT(sched_swap_numa,
517
518 TP_PROTO(struct task_struct *src_tsk, int src_cpu,
519 struct task_struct *dst_tsk, int dst_cpu),
520
521 TP_ARGS(src_tsk, src_cpu, dst_tsk, dst_cpu),
522
523 TP_STRUCT__entry(
524 __field( pid_t, src_pid )
525 __field( pid_t, src_tgid )
526 __field( pid_t, src_ngid )
527 __field( int, src_cpu )
528 __field( int, src_nid )
529 __field( pid_t, dst_pid )
530 __field( pid_t, dst_tgid )
531 __field( pid_t, dst_ngid )
532 __field( int, dst_cpu )
533 __field( int, dst_nid )
534 ),
535
536 TP_fast_assign(
537 __entry->src_pid = task_pid_nr(src_tsk);
538 __entry->src_tgid = task_tgid_nr(src_tsk);
539 __entry->src_ngid = task_numa_group_id(src_tsk);
540 __entry->src_cpu = src_cpu;
541 __entry->src_nid = cpu_to_node(src_cpu);
542 __entry->dst_pid = task_pid_nr(dst_tsk);
543 __entry->dst_tgid = task_tgid_nr(dst_tsk);
544 __entry->dst_ngid = task_numa_group_id(dst_tsk);
545 __entry->dst_cpu = dst_cpu;
546 __entry->dst_nid = cpu_to_node(dst_cpu);
547 ),
548
549 TP_printk("src_pid=%d src_tgid=%d src_ngid=%d src_cpu=%d src_nid=%d dst_pid=%d dst_tgid=%d dst_ngid=%d dst_cpu=%d dst_nid=%d",
550 __entry->src_pid, __entry->src_tgid, __entry->src_ngid,
551 __entry->src_cpu, __entry->src_nid,
552 __entry->dst_pid, __entry->dst_tgid, __entry->dst_ngid,
553 __entry->dst_cpu, __entry->dst_nid)
554);
555
556/*
557 * Tracepoint for waking a polling cpu without an IPI.
558 */
559TRACE_EVENT(sched_wake_idle_without_ipi,
560
561 TP_PROTO(int cpu),
562
563 TP_ARGS(cpu),
564
565 TP_STRUCT__entry(
566 __field( int, cpu )
567 ),
568
569 TP_fast_assign(
570 __entry->cpu = cpu;
571 ),
572
573 TP_printk("cpu=%d", __entry->cpu)
574);
575#endif /* _TRACE_SCHED_H */
576
577/* This part must be outside protection */
578#include <trace/define_trace.h>