tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1#undef TRACE_SYSTEM
2#define TRACE_SYSTEM sched
3
4#if !defined(_TRACE_SCHED_H) || defined(TRACE_HEADER_MULTI_READ)
5#define _TRACE_SCHED_H
6
7#include <linux/sched/numa_balancing.h>
8#include <linux/tracepoint.h>
9#include <linux/binfmts.h>
10
11/*
12 * Tracepoint for calling kthread_stop, performed to end a kthread:
13 */
14TRACE_EVENT(sched_kthread_stop,
15
16 TP_PROTO(struct task_struct *t),
17
18 TP_ARGS(t),
19
20 TP_STRUCT__entry(
21 __array( char, comm, TASK_COMM_LEN )
22 __field( pid_t, pid )
23 ),
24
25 TP_fast_assign(
26 memcpy(__entry->comm, t->comm, TASK_COMM_LEN);
27 __entry->pid = t->pid;
28 ),
29
30 TP_printk("comm=%s pid=%d", __entry->comm, __entry->pid)
31);
32
33/*
34 * Tracepoint for the return value of the kthread stopping:
35 */
36TRACE_EVENT(sched_kthread_stop_ret,
37
38 TP_PROTO(int ret),
39
40 TP_ARGS(ret),
41
42 TP_STRUCT__entry(
43 __field( int, ret )
44 ),
45
46 TP_fast_assign(
47 __entry->ret = ret;
48 ),
49
50 TP_printk("ret=%d", __entry->ret)
51);
52
53/*
54 * Tracepoint for waking up a task:
55 */
56DECLARE_EVENT_CLASS(sched_wakeup_template,
57
58 TP_PROTO(struct task_struct *p),
59
60 TP_ARGS(__perf_task(p)),
61
62 TP_STRUCT__entry(
63 __array( char, comm, TASK_COMM_LEN )
64 __field( pid_t, pid )
65 __field( int, prio )
66 __field( int, success )
67 __field( int, target_cpu )
68 ),
69
70 TP_fast_assign(
71 memcpy(__entry->comm, p->comm, TASK_COMM_LEN);
72 __entry->pid = p->pid;
73 __entry->prio = p->prio; /* XXX SCHED_DEADLINE */
74 __entry->success = 1; /* rudiment, kill when possible */
75 __entry->target_cpu = task_cpu(p);
76 ),
77
78 TP_printk("comm=%s pid=%d prio=%d target_cpu=%03d",
79 __entry->comm, __entry->pid, __entry->prio,
80 __entry->target_cpu)
81);
82
83/*
84 * Tracepoint called when waking a task; this tracepoint is guaranteed to be
85 * called from the waking context.
86 */
87DEFINE_EVENT(sched_wakeup_template, sched_waking,
88 TP_PROTO(struct task_struct *p),
89 TP_ARGS(p));
90
91/*
92 * Tracepoint called when the task is actually woken; p->state == TASK_RUNNNG.
93 * It it not always called from the waking context.
94 */
95DEFINE_EVENT(sched_wakeup_template, sched_wakeup,
96 TP_PROTO(struct task_struct *p),
97 TP_ARGS(p));
98
99/*
100 * Tracepoint for waking up a new task:
101 */
102DEFINE_EVENT(sched_wakeup_template, sched_wakeup_new,
103 TP_PROTO(struct task_struct *p),
104 TP_ARGS(p));
105
106#ifdef CREATE_TRACE_POINTS
107static inline long __trace_sched_switch_state(bool preempt, struct task_struct *p)
108{
109#ifdef CONFIG_SCHED_DEBUG
110 BUG_ON(p != current);
111#endif /* CONFIG_SCHED_DEBUG */
112
113 /*
114 * Preemption ignores task state, therefore preempted tasks are always
115 * RUNNING (we will not have dequeued if state != RUNNING).
116 */
117 return preempt ? TASK_RUNNING | TASK_STATE_MAX : p->state;
118}
119#endif /* CREATE_TRACE_POINTS */
120
121/*
122 * Tracepoint for task switches, performed by the scheduler:
123 */
124TRACE_EVENT(sched_switch,
125
126 TP_PROTO(bool preempt,
127 struct task_struct *prev,
128 struct task_struct *next),
129
130 TP_ARGS(preempt, prev, next),
131
132 TP_STRUCT__entry(
133 __array( char, prev_comm, TASK_COMM_LEN )
134 __field( pid_t, prev_pid )
135 __field( int, prev_prio )
136 __field( long, prev_state )
137 __array( char, next_comm, TASK_COMM_LEN )
138 __field( pid_t, next_pid )
139 __field( int, next_prio )
140 ),
141
142 TP_fast_assign(
143 memcpy(__entry->next_comm, next->comm, TASK_COMM_LEN);
144 __entry->prev_pid = prev->pid;
145 __entry->prev_prio = prev->prio;
146 __entry->prev_state = __trace_sched_switch_state(preempt, prev);
147 memcpy(__entry->prev_comm, prev->comm, TASK_COMM_LEN);
148 __entry->next_pid = next->pid;
149 __entry->next_prio = next->prio;
150 /* XXX SCHED_DEADLINE */
151 ),
152
153 TP_printk("prev_comm=%s prev_pid=%d prev_prio=%d prev_state=%s%s ==> next_comm=%s next_pid=%d next_prio=%d",
154 __entry->prev_comm, __entry->prev_pid, __entry->prev_prio,
155 __entry->prev_state & (TASK_STATE_MAX-1) ?
156 __print_flags(__entry->prev_state & (TASK_STATE_MAX-1), "|",
157 { 1, "S"} , { 2, "D" }, { 4, "T" }, { 8, "t" },
158 { 16, "Z" }, { 32, "X" }, { 64, "x" },
159 { 128, "K" }, { 256, "W" }, { 512, "P" },
160 { 1024, "N" }) : "R",
161 __entry->prev_state & TASK_STATE_MAX ? "+" : "",
162 __entry->next_comm, __entry->next_pid, __entry->next_prio)
163);
164
165/*
166 * Tracepoint for a task being migrated:
167 */
168TRACE_EVENT(sched_migrate_task,
169
170 TP_PROTO(struct task_struct *p, int dest_cpu),
171
172 TP_ARGS(p, dest_cpu),
173
174 TP_STRUCT__entry(
175 __array( char, comm, TASK_COMM_LEN )
176 __field( pid_t, pid )
177 __field( int, prio )
178 __field( int, orig_cpu )
179 __field( int, dest_cpu )
180 ),
181
182 TP_fast_assign(
183 memcpy(__entry->comm, p->comm, TASK_COMM_LEN);
184 __entry->pid = p->pid;
185 __entry->prio = p->prio; /* XXX SCHED_DEADLINE */
186 __entry->orig_cpu = task_cpu(p);
187 __entry->dest_cpu = dest_cpu;
188 ),
189
190 TP_printk("comm=%s pid=%d prio=%d orig_cpu=%d dest_cpu=%d",
191 __entry->comm, __entry->pid, __entry->prio,
192 __entry->orig_cpu, __entry->dest_cpu)
193);
194
195DECLARE_EVENT_CLASS(sched_process_template,
196
197 TP_PROTO(struct task_struct *p),
198
199 TP_ARGS(p),
200
201 TP_STRUCT__entry(
202 __array( char, comm, TASK_COMM_LEN )
203 __field( pid_t, pid )
204 __field( int, prio )
205 ),
206
207 TP_fast_assign(
208 memcpy(__entry->comm, p->comm, TASK_COMM_LEN);
209 __entry->pid = p->pid;
210 __entry->prio = p->prio; /* XXX SCHED_DEADLINE */
211 ),
212
213 TP_printk("comm=%s pid=%d prio=%d",
214 __entry->comm, __entry->pid, __entry->prio)
215);
216
217/*
218 * Tracepoint for freeing a task:
219 */
220DEFINE_EVENT(sched_process_template, sched_process_free,
221 TP_PROTO(struct task_struct *p),
222 TP_ARGS(p));
223
224
225/*
226 * Tracepoint for a task exiting:
227 */
228DEFINE_EVENT(sched_process_template, sched_process_exit,
229 TP_PROTO(struct task_struct *p),
230 TP_ARGS(p));
231
232/*
233 * Tracepoint for waiting on task to unschedule:
234 */
235DEFINE_EVENT(sched_process_template, sched_wait_task,
236 TP_PROTO(struct task_struct *p),
237 TP_ARGS(p));
238
239/*
240 * Tracepoint for a waiting task:
241 */
242TRACE_EVENT(sched_process_wait,
243
244 TP_PROTO(struct pid *pid),
245
246 TP_ARGS(pid),
247
248 TP_STRUCT__entry(
249 __array( char, comm, TASK_COMM_LEN )
250 __field( pid_t, pid )
251 __field( int, prio )
252 ),
253
254 TP_fast_assign(
255 memcpy(__entry->comm, current->comm, TASK_COMM_LEN);
256 __entry->pid = pid_nr(pid);
257 __entry->prio = current->prio; /* XXX SCHED_DEADLINE */
258 ),
259
260 TP_printk("comm=%s pid=%d prio=%d",
261 __entry->comm, __entry->pid, __entry->prio)
262);
263
264/*
265 * Tracepoint for do_fork:
266 */
267TRACE_EVENT(sched_process_fork,
268
269 TP_PROTO(struct task_struct *parent, struct task_struct *child),
270
271 TP_ARGS(parent, child),
272
273 TP_STRUCT__entry(
274 __array( char, parent_comm, TASK_COMM_LEN )
275 __field( pid_t, parent_pid )
276 __array( char, child_comm, TASK_COMM_LEN )
277 __field( pid_t, child_pid )
278 ),
279
280 TP_fast_assign(
281 memcpy(__entry->parent_comm, parent->comm, TASK_COMM_LEN);
282 __entry->parent_pid = parent->pid;
283 memcpy(__entry->child_comm, child->comm, TASK_COMM_LEN);
284 __entry->child_pid = child->pid;
285 ),
286
287 TP_printk("comm=%s pid=%d child_comm=%s child_pid=%d",
288 __entry->parent_comm, __entry->parent_pid,
289 __entry->child_comm, __entry->child_pid)
290);
291
292/*
293 * Tracepoint for exec:
294 */
295TRACE_EVENT(sched_process_exec,
296
297 TP_PROTO(struct task_struct *p, pid_t old_pid,
298 struct linux_binprm *bprm),
299
300 TP_ARGS(p, old_pid, bprm),
301
302 TP_STRUCT__entry(
303 __string( filename, bprm->filename )
304 __field( pid_t, pid )
305 __field( pid_t, old_pid )
306 ),
307
308 TP_fast_assign(
309 __assign_str(filename, bprm->filename);
310 __entry->pid = p->pid;
311 __entry->old_pid = old_pid;
312 ),
313
314 TP_printk("filename=%s pid=%d old_pid=%d", __get_str(filename),
315 __entry->pid, __entry->old_pid)
316);
317
318/*
319 * XXX the below sched_stat tracepoints only apply to SCHED_OTHER/BATCH/IDLE
320 * adding sched_stat support to SCHED_FIFO/RR would be welcome.
321 */
322DECLARE_EVENT_CLASS(sched_stat_template,
323
324 TP_PROTO(struct task_struct *tsk, u64 delay),
325
326 TP_ARGS(__perf_task(tsk), __perf_count(delay)),
327
328 TP_STRUCT__entry(
329 __array( char, comm, TASK_COMM_LEN )
330 __field( pid_t, pid )
331 __field( u64, delay )
332 ),
333
334 TP_fast_assign(
335 memcpy(__entry->comm, tsk->comm, TASK_COMM_LEN);
336 __entry->pid = tsk->pid;
337 __entry->delay = delay;
338 ),
339
340 TP_printk("comm=%s pid=%d delay=%Lu [ns]",
341 __entry->comm, __entry->pid,
342 (unsigned long long)__entry->delay)
343);
344
345
346/*
347 * Tracepoint for accounting wait time (time the task is runnable
348 * but not actually running due to scheduler contention).
349 */
350DEFINE_EVENT(sched_stat_template, sched_stat_wait,
351 TP_PROTO(struct task_struct *tsk, u64 delay),
352 TP_ARGS(tsk, delay));
353
354/*
355 * Tracepoint for accounting sleep time (time the task is not runnable,
356 * including iowait, see below).
357 */
358DEFINE_EVENT(sched_stat_template, sched_stat_sleep,
359 TP_PROTO(struct task_struct *tsk, u64 delay),
360 TP_ARGS(tsk, delay));
361
362/*
363 * Tracepoint for accounting iowait time (time the task is not runnable
364 * due to waiting on IO to complete).
365 */
366DEFINE_EVENT(sched_stat_template, sched_stat_iowait,
367 TP_PROTO(struct task_struct *tsk, u64 delay),
368 TP_ARGS(tsk, delay));
369
370/*
371 * Tracepoint for accounting blocked time (time the task is in uninterruptible).
372 */
373DEFINE_EVENT(sched_stat_template, sched_stat_blocked,
374 TP_PROTO(struct task_struct *tsk, u64 delay),
375 TP_ARGS(tsk, delay));
376
377/*
378 * Tracepoint for accounting runtime (time the task is executing
379 * on a CPU).
380 */
381DECLARE_EVENT_CLASS(sched_stat_runtime,
382
383 TP_PROTO(struct task_struct *tsk, u64 runtime, u64 vruntime),
384
385 TP_ARGS(tsk, __perf_count(runtime), vruntime),
386
387 TP_STRUCT__entry(
388 __array( char, comm, TASK_COMM_LEN )
389 __field( pid_t, pid )
390 __field( u64, runtime )
391 __field( u64, vruntime )
392 ),
393
394 TP_fast_assign(
395 memcpy(__entry->comm, tsk->comm, TASK_COMM_LEN);
396 __entry->pid = tsk->pid;
397 __entry->runtime = runtime;
398 __entry->vruntime = vruntime;
399 ),
400
401 TP_printk("comm=%s pid=%d runtime=%Lu [ns] vruntime=%Lu [ns]",
402 __entry->comm, __entry->pid,
403 (unsigned long long)__entry->runtime,
404 (unsigned long long)__entry->vruntime)
405);
406
407DEFINE_EVENT(sched_stat_runtime, sched_stat_runtime,
408 TP_PROTO(struct task_struct *tsk, u64 runtime, u64 vruntime),
409 TP_ARGS(tsk, runtime, vruntime));
410
411/*
412 * Tracepoint for showing priority inheritance modifying a tasks
413 * priority.
414 */
415TRACE_EVENT(sched_pi_setprio,
416
417 TP_PROTO(struct task_struct *tsk, struct task_struct *pi_task),
418
419 TP_ARGS(tsk, pi_task),
420
421 TP_STRUCT__entry(
422 __array( char, comm, TASK_COMM_LEN )
423 __field( pid_t, pid )
424 __field( int, oldprio )
425 __field( int, newprio )
426 ),
427
428 TP_fast_assign(
429 memcpy(__entry->comm, tsk->comm, TASK_COMM_LEN);
430 __entry->pid = tsk->pid;
431 __entry->oldprio = tsk->prio;
432 __entry->newprio = pi_task ? pi_task->prio : tsk->prio;
433 /* XXX SCHED_DEADLINE bits missing */
434 ),
435
436 TP_printk("comm=%s pid=%d oldprio=%d newprio=%d",
437 __entry->comm, __entry->pid,
438 __entry->oldprio, __entry->newprio)
439);
440
441#ifdef CONFIG_DETECT_HUNG_TASK
442TRACE_EVENT(sched_process_hang,
443 TP_PROTO(struct task_struct *tsk),
444 TP_ARGS(tsk),
445
446 TP_STRUCT__entry(
447 __array( char, comm, TASK_COMM_LEN )
448 __field( pid_t, pid )
449 ),
450
451 TP_fast_assign(
452 memcpy(__entry->comm, tsk->comm, TASK_COMM_LEN);
453 __entry->pid = tsk->pid;
454 ),
455
456 TP_printk("comm=%s pid=%d", __entry->comm, __entry->pid)
457);
458#endif /* CONFIG_DETECT_HUNG_TASK */
459
460DECLARE_EVENT_CLASS(sched_move_task_template,
461
462 TP_PROTO(struct task_struct *tsk, int src_cpu, int dst_cpu),
463
464 TP_ARGS(tsk, src_cpu, dst_cpu),
465
466 TP_STRUCT__entry(
467 __field( pid_t, pid )
468 __field( pid_t, tgid )
469 __field( pid_t, ngid )
470 __field( int, src_cpu )
471 __field( int, src_nid )
472 __field( int, dst_cpu )
473 __field( int, dst_nid )
474 ),
475
476 TP_fast_assign(
477 __entry->pid = task_pid_nr(tsk);
478 __entry->tgid = task_tgid_nr(tsk);
479 __entry->ngid = task_numa_group_id(tsk);
480 __entry->src_cpu = src_cpu;
481 __entry->src_nid = cpu_to_node(src_cpu);
482 __entry->dst_cpu = dst_cpu;
483 __entry->dst_nid = cpu_to_node(dst_cpu);
484 ),
485
486 TP_printk("pid=%d tgid=%d ngid=%d src_cpu=%d src_nid=%d dst_cpu=%d dst_nid=%d",
487 __entry->pid, __entry->tgid, __entry->ngid,
488 __entry->src_cpu, __entry->src_nid,
489 __entry->dst_cpu, __entry->dst_nid)
490);
491
492/*
493 * Tracks migration of tasks from one runqueue to another. Can be used to
494 * detect if automatic NUMA balancing is bouncing between nodes
495 */
496DEFINE_EVENT(sched_move_task_template, sched_move_numa,
497 TP_PROTO(struct task_struct *tsk, int src_cpu, int dst_cpu),
498
499 TP_ARGS(tsk, src_cpu, dst_cpu)
500);
501
502DEFINE_EVENT(sched_move_task_template, sched_stick_numa,
503 TP_PROTO(struct task_struct *tsk, int src_cpu, int dst_cpu),
504
505 TP_ARGS(tsk, src_cpu, dst_cpu)
506);
507
508TRACE_EVENT(sched_swap_numa,
509
510 TP_PROTO(struct task_struct *src_tsk, int src_cpu,
511 struct task_struct *dst_tsk, int dst_cpu),
512
513 TP_ARGS(src_tsk, src_cpu, dst_tsk, dst_cpu),
514
515 TP_STRUCT__entry(
516 __field( pid_t, src_pid )
517 __field( pid_t, src_tgid )
518 __field( pid_t, src_ngid )
519 __field( int, src_cpu )
520 __field( int, src_nid )
521 __field( pid_t, dst_pid )
522 __field( pid_t, dst_tgid )
523 __field( pid_t, dst_ngid )
524 __field( int, dst_cpu )
525 __field( int, dst_nid )
526 ),
527
528 TP_fast_assign(
529 __entry->src_pid = task_pid_nr(src_tsk);
530 __entry->src_tgid = task_tgid_nr(src_tsk);
531 __entry->src_ngid = task_numa_group_id(src_tsk);
532 __entry->src_cpu = src_cpu;
533 __entry->src_nid = cpu_to_node(src_cpu);
534 __entry->dst_pid = task_pid_nr(dst_tsk);
535 __entry->dst_tgid = task_tgid_nr(dst_tsk);
536 __entry->dst_ngid = task_numa_group_id(dst_tsk);
537 __entry->dst_cpu = dst_cpu;
538 __entry->dst_nid = cpu_to_node(dst_cpu);
539 ),
540
541 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",
542 __entry->src_pid, __entry->src_tgid, __entry->src_ngid,
543 __entry->src_cpu, __entry->src_nid,
544 __entry->dst_pid, __entry->dst_tgid, __entry->dst_ngid,
545 __entry->dst_cpu, __entry->dst_nid)
546);
547
548/*
549 * Tracepoint for waking a polling cpu without an IPI.
550 */
551TRACE_EVENT(sched_wake_idle_without_ipi,
552
553 TP_PROTO(int cpu),
554
555 TP_ARGS(cpu),
556
557 TP_STRUCT__entry(
558 __field( int, cpu )
559 ),
560
561 TP_fast_assign(
562 __entry->cpu = cpu;
563 ),
564
565 TP_printk("cpu=%d", __entry->cpu)
566);
567#endif /* _TRACE_SCHED_H */
568
569/* This part must be outside protection */
570#include <trace/define_trace.h>