include/trace/events/sched.h

   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  */
  14 TRACE_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  */
  36 TRACE_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  */
  56 DECLARE_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  */
  87 DEFINE_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  */
  95 DEFINE_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  */
 102 DEFINE_EVENT(sched_wakeup_template, sched_wakeup_new,
 103              TP_PROTO(struct task_struct *p),
 104              TP_ARGS(p));
 105
 106 #ifdef CREATE_TRACE_POINTS
 107 static 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  */
 124 TRACE_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  */
 168 TRACE_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
 195 DECLARE_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  */
 220 DEFINE_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  */
 228 DEFINE_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  */
 235 DEFINE_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  */
 242 TRACE_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  */
 267 TRACE_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  */
 295 TRACE_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  */
 322 DECLARE_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  */
 350 DEFINE_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  */
 358 DEFINE_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  */
 366 DEFINE_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  */
 373 DEFINE_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  */
 381 DECLARE_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
 407 DEFINE_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  */
 415 TRACE_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
 442 TRACE_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
 460 DECLARE_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  */
 496 DEFINE_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
 502 DEFINE_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
 508 TRACE_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  */
 551 TRACE_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>