drivers/staging/lttng/instrumentation/events/lttng-module/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.h>
   8 #include <linux/tracepoint.h>
   9 #include <linux/binfmts.h>
  10 #include <linux/version.h>
  11 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,9,0))
  12 #include <linux/sched/rt.h>
  13 #endif
  14
  15 #ifndef _TRACE_SCHED_DEF_
  16 #define _TRACE_SCHED_DEF_
  17
  18 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,35))
  19
  20 static inline long __trace_sched_switch_state(struct task_struct *p)
  21 {
  22         long state = p->state;
  23
  24 #ifdef CONFIG_PREEMPT
  25         /*
  26          * For all intents and purposes a preempted task is a running task.
  27          */
  28         if (task_thread_info(p)->preempt_count & PREEMPT_ACTIVE)
  29 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,2,0))
  30                 state = TASK_RUNNING | TASK_STATE_MAX;
  31 #else
  32                 state = TASK_RUNNING;
  33 #endif
  34 #endif
  35
  36         return state;
  37 }
  38
  39 #endif
  40
  41 #endif /* _TRACE_SCHED_DEF_ */
  42
  43 /*
  44  * Tracepoint for calling kthread_stop, performed to end a kthread:
  45  */
  46 TRACE_EVENT(sched_kthread_stop,
  47
  48         TP_PROTO(struct task_struct *t),
  49
  50         TP_ARGS(t),
  51
  52         TP_STRUCT__entry(
  53                 __array_text(   char,   comm,   TASK_COMM_LEN   )
  54                 __field(        pid_t,  tid                     )
  55         ),
  56
  57         TP_fast_assign(
  58                 tp_memcpy(comm, t->comm, TASK_COMM_LEN)
  59                 tp_assign(tid, t->pid)
  60         ),
  61
  62         TP_printk("comm=%s tid=%d", __entry->comm, __entry->tid)
  63 )
  64
  65 /*
  66  * Tracepoint for the return value of the kthread stopping:
  67  */
  68 TRACE_EVENT(sched_kthread_stop_ret,
  69
  70         TP_PROTO(int ret),
  71
  72         TP_ARGS(ret),
  73
  74         TP_STRUCT__entry(
  75                 __field(        int,    ret     )
  76         ),
  77
  78         TP_fast_assign(
  79                 tp_assign(ret, ret)
  80         ),
  81
  82         TP_printk("ret=%d", __entry->ret)
  83 )
  84
  85 /*
  86  * Tracepoint for waking up a task:
  87  */
  88 DECLARE_EVENT_CLASS(sched_wakeup_template,
  89
  90 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,35))
  91         TP_PROTO(struct task_struct *p, int success),
  92
  93         TP_ARGS(p, success),
  94 #else
  95         TP_PROTO(struct rq *rq, struct task_struct *p, int success),
  96
  97         TP_ARGS(rq, p, success),
  98 #endif
  99
 100         TP_STRUCT__entry(
 101                 __array_text(   char,   comm,   TASK_COMM_LEN   )
 102                 __field(        pid_t,  tid                     )
 103                 __field(        int,    prio                    )
 104                 __field(        int,    success                 )
 105 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,32))
 106                 __field(        int,    target_cpu              )
 107 #endif
 108         ),
 109
 110         TP_fast_assign(
 111                 tp_memcpy(comm, p->comm, TASK_COMM_LEN)
 112                 tp_assign(tid, p->pid)
 113                 tp_assign(prio, p->prio)
 114                 tp_assign(success, success)
 115 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,32))
 116                 tp_assign(target_cpu, task_cpu(p))
 117 #endif
 118 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,6,0))
 119         )
 120         TP_perf_assign(
 121                 __perf_task(p)
 122 #endif
 123         ),
 124
 125 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,32))
 126         TP_printk("comm=%s tid=%d prio=%d success=%d target_cpu=%03d",
 127                   __entry->comm, __entry->tid, __entry->prio,
 128                   __entry->success, __entry->target_cpu)
 129 #else
 130         TP_printk("comm=%s tid=%d prio=%d success=%d",
 131                   __entry->comm, __entry->tid, __entry->prio,
 132                   __entry->success)
 133 #endif
 134 )
 135
 136 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,35))
 137
 138 DEFINE_EVENT(sched_wakeup_template, sched_wakeup,
 139              TP_PROTO(struct task_struct *p, int success),
 140              TP_ARGS(p, success))
 141
 142 /*
 143  * Tracepoint for waking up a new task:
 144  */
 145 DEFINE_EVENT(sched_wakeup_template, sched_wakeup_new,
 146              TP_PROTO(struct task_struct *p, int success),
 147              TP_ARGS(p, success))
 148
 149 #else /* #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,35)) */
 150
 151 DEFINE_EVENT(sched_wakeup_template, sched_wakeup,
 152              TP_PROTO(struct rq *rq, struct task_struct *p, int success),
 153              TP_ARGS(rq, p, success))
 154
 155 /*
 156  * Tracepoint for waking up a new task:
 157  */
 158 DEFINE_EVENT(sched_wakeup_template, sched_wakeup_new,
 159              TP_PROTO(struct rq *rq, struct task_struct *p, int success),
 160              TP_ARGS(rq, p, success))
 161
 162 #endif /* #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,35)) */
 163
 164 /*
 165  * Tracepoint for task switches, performed by the scheduler:
 166  */
 167 TRACE_EVENT(sched_switch,
 168
 169 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,35))
 170         TP_PROTO(struct task_struct *prev,
 171                  struct task_struct *next),
 172
 173         TP_ARGS(prev, next),
 174 #else /* #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,35)) */
 175         TP_PROTO(struct rq *rq, struct task_struct *prev,
 176                  struct task_struct *next),
 177
 178         TP_ARGS(rq, prev, next),
 179 #endif /* #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,35)) */
 180
 181         TP_STRUCT__entry(
 182                 __array_text(   char,   prev_comm,      TASK_COMM_LEN   )
 183                 __field(        pid_t,  prev_tid                        )
 184                 __field(        int,    prev_prio                       )
 185                 __field(        long,   prev_state                      )
 186                 __array_text(   char,   next_comm,      TASK_COMM_LEN   )
 187                 __field(        pid_t,  next_tid                        )
 188                 __field(        int,    next_prio                       )
 189         ),
 190
 191         TP_fast_assign(
 192                 tp_memcpy(next_comm, next->comm, TASK_COMM_LEN)
 193                 tp_assign(prev_tid, prev->pid)
 194                 tp_assign(prev_prio, prev->prio - MAX_RT_PRIO)
 195 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,35))
 196                 tp_assign(prev_state, __trace_sched_switch_state(prev))
 197 #else
 198                 tp_assign(prev_state, prev->state)
 199 #endif
 200                 tp_memcpy(prev_comm, prev->comm, TASK_COMM_LEN)
 201                 tp_assign(next_tid, next->pid)
 202                 tp_assign(next_prio, next->prio - MAX_RT_PRIO)
 203         ),
 204
 205 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,2,0))
 206         TP_printk("prev_comm=%s prev_tid=%d prev_prio=%d prev_state=%s%s ==> next_comm=%s next_tid=%d next_prio=%d",
 207                 __entry->prev_comm, __entry->prev_tid, __entry->prev_prio,
 208                 __entry->prev_state & (TASK_STATE_MAX-1) ?
 209                   __print_flags(__entry->prev_state & (TASK_STATE_MAX-1), "|",
 210                                 { 1, "S"} , { 2, "D" }, { 4, "T" }, { 8, "t" },
 211                                 { 16, "Z" }, { 32, "X" }, { 64, "x" },
 212                                 { 128, "W" }) : "R",
 213                 __entry->prev_state & TASK_STATE_MAX ? "+" : "",
 214                 __entry->next_comm, __entry->next_tid, __entry->next_prio)
 215 #else
 216         TP_printk("prev_comm=%s prev_tid=%d prev_prio=%d prev_state=%s ==> next_comm=%s next_tid=%d next_prio=%d",
 217                 __entry->prev_comm, __entry->prev_tid, __entry->prev_prio,
 218                 __entry->prev_state ?
 219                   __print_flags(__entry->prev_state, "|",
 220                                 { 1, "S"} , { 2, "D" }, { 4, "T" }, { 8, "t" },
 221                                 { 16, "Z" }, { 32, "X" }, { 64, "x" },
 222                                 { 128, "W" }) : "R",
 223                 __entry->next_comm, __entry->next_tid, __entry->next_prio)
 224 #endif
 225 )
 226
 227 /*
 228  * Tracepoint for a task being migrated:
 229  */
 230 TRACE_EVENT(sched_migrate_task,
 231
 232         TP_PROTO(struct task_struct *p, int dest_cpu),
 233
 234         TP_ARGS(p, dest_cpu),
 235
 236         TP_STRUCT__entry(
 237                 __array_text(   char,   comm,   TASK_COMM_LEN   )
 238                 __field(        pid_t,  tid                     )
 239                 __field(        int,    prio                    )
 240                 __field(        int,    orig_cpu                )
 241                 __field(        int,    dest_cpu                )
 242         ),
 243
 244         TP_fast_assign(
 245                 tp_memcpy(comm, p->comm, TASK_COMM_LEN)
 246                 tp_assign(tid, p->pid)
 247                 tp_assign(prio, p->prio - MAX_RT_PRIO)
 248                 tp_assign(orig_cpu, task_cpu(p))
 249                 tp_assign(dest_cpu, dest_cpu)
 250         ),
 251
 252         TP_printk("comm=%s tid=%d prio=%d orig_cpu=%d dest_cpu=%d",
 253                   __entry->comm, __entry->tid, __entry->prio,
 254                   __entry->orig_cpu, __entry->dest_cpu)
 255 )
 256
 257 DECLARE_EVENT_CLASS(sched_process_template,
 258
 259         TP_PROTO(struct task_struct *p),
 260
 261         TP_ARGS(p),
 262
 263         TP_STRUCT__entry(
 264                 __array_text(   char,   comm,   TASK_COMM_LEN   )
 265                 __field(        pid_t,  tid                     )
 266                 __field(        int,    prio                    )
 267         ),
 268
 269         TP_fast_assign(
 270                 tp_memcpy(comm, p->comm, TASK_COMM_LEN)
 271                 tp_assign(tid, p->pid)
 272                 tp_assign(prio, p->prio - MAX_RT_PRIO)
 273         ),
 274
 275         TP_printk("comm=%s tid=%d prio=%d",
 276                   __entry->comm, __entry->tid, __entry->prio)
 277 )
 278
 279 /*
 280  * Tracepoint for freeing a task:
 281  */
 282 DEFINE_EVENT(sched_process_template, sched_process_free,
 283              TP_PROTO(struct task_struct *p),
 284              TP_ARGS(p))
 285
 286
 287 /*
 288  * Tracepoint for a task exiting:
 289  */
 290 DEFINE_EVENT(sched_process_template, sched_process_exit,
 291              TP_PROTO(struct task_struct *p),
 292              TP_ARGS(p))
 293
 294 /*
 295  * Tracepoint for waiting on task to unschedule:
 296  */
 297 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,35))
 298 DEFINE_EVENT(sched_process_template, sched_wait_task,
 299         TP_PROTO(struct task_struct *p),
 300         TP_ARGS(p))
 301 #else /* #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,35)) */
 302 DEFINE_EVENT(sched_process_template, sched_wait_task,
 303         TP_PROTO(struct rq *rq, struct task_struct *p),
 304         TP_ARGS(rq, p))
 305 #endif /* #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,35)) */
 306
 307 /*
 308  * Tracepoint for a waiting task:
 309  */
 310 TRACE_EVENT(sched_process_wait,
 311
 312         TP_PROTO(struct pid *pid),
 313
 314         TP_ARGS(pid),
 315
 316         TP_STRUCT__entry(
 317                 __array_text(   char,   comm,   TASK_COMM_LEN   )
 318                 __field(        pid_t,  tid                     )
 319                 __field(        int,    prio                    )
 320         ),
 321
 322         TP_fast_assign(
 323                 tp_memcpy(comm, current->comm, TASK_COMM_LEN)
 324                 tp_assign(tid, pid_nr(pid))
 325                 tp_assign(prio, current->prio - MAX_RT_PRIO)
 326         ),
 327
 328         TP_printk("comm=%s tid=%d prio=%d",
 329                   __entry->comm, __entry->tid, __entry->prio)
 330 )
 331
 332 /*
 333  * Tracepoint for do_fork.
 334  * Saving both TID and PID information, especially for the child, allows
 335  * trace analyzers to distinguish between creation of a new process and
 336  * creation of a new thread. Newly created processes will have child_tid
 337  * == child_pid, while creation of a thread yields to child_tid !=
 338  * child_pid.
 339  */
 340 TRACE_EVENT(sched_process_fork,
 341
 342         TP_PROTO(struct task_struct *parent, struct task_struct *child),
 343
 344         TP_ARGS(parent, child),
 345
 346         TP_STRUCT__entry(
 347                 __array_text(   char,   parent_comm,    TASK_COMM_LEN   )
 348                 __field(        pid_t,  parent_tid                      )
 349                 __field(        pid_t,  parent_pid                      )
 350                 __array_text(   char,   child_comm,     TASK_COMM_LEN   )
 351                 __field(        pid_t,  child_tid                       )
 352                 __field(        pid_t,  child_pid                       )
 353         ),
 354
 355         TP_fast_assign(
 356                 tp_memcpy(parent_comm, parent->comm, TASK_COMM_LEN)
 357                 tp_assign(parent_tid, parent->pid)
 358                 tp_assign(parent_pid, parent->tgid)
 359                 tp_memcpy(child_comm, child->comm, TASK_COMM_LEN)
 360                 tp_assign(child_tid, child->pid)
 361                 tp_assign(child_pid, child->tgid)
 362         ),
 363
 364         TP_printk("comm=%s tid=%d child_comm=%s child_tid=%d",
 365                 __entry->parent_comm, __entry->parent_tid,
 366                 __entry->child_comm, __entry->child_tid)
 367 )
 368
 369 #if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,33))
 370 /*
 371  * Tracepoint for sending a signal:
 372  */
 373 TRACE_EVENT(sched_signal_send,
 374
 375         TP_PROTO(int sig, struct task_struct *p),
 376
 377         TP_ARGS(sig, p),
 378
 379         TP_STRUCT__entry(
 380                 __field(        int,    sig                     )
 381                 __array(        char,   comm,   TASK_COMM_LEN   )
 382                 __field(        pid_t,  pid                     )
 383         ),
 384
 385         TP_fast_assign(
 386                 tp_memcpy(comm, p->comm, TASK_COMM_LEN)
 387                 tp_assign(pid, p->pid)
 388                 tp_assign(sig, sig)
 389         ),
 390
 391         TP_printk("sig=%d comm=%s pid=%d",
 392                 __entry->sig, __entry->comm, __entry->pid)
 393 )
 394 #endif
 395
 396 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,4,0))
 397 /*
 398  * Tracepoint for exec:
 399  */
 400 TRACE_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,          tid             )
 410                 __field(        pid_t,          old_tid         )
 411         ),
 412
 413         TP_fast_assign(
 414                 tp_strcpy(filename, bprm->filename)
 415                 tp_assign(tid, p->pid)
 416                 tp_assign(old_tid, old_pid)
 417         ),
 418
 419         TP_printk("filename=%s tid=%d old_tid=%d", __get_str(filename),
 420                   __entry->tid, __entry->old_tid)
 421 )
 422 #endif
 423
 424 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,32))
 425 /*
 426  * XXX the below sched_stat tracepoints only apply to SCHED_OTHER/BATCH/IDLE
 427  *     adding sched_stat support to SCHED_FIFO/RR would be welcome.
 428  */
 429 DECLARE_EVENT_CLASS(sched_stat_template,
 430
 431         TP_PROTO(struct task_struct *tsk, u64 delay),
 432
 433         TP_ARGS(tsk, delay),
 434
 435         TP_STRUCT__entry(
 436                 __array_text( char,     comm,   TASK_COMM_LEN   )
 437                 __field( pid_t, tid                     )
 438                 __field( u64,   delay                   )
 439         ),
 440
 441         TP_fast_assign(
 442                 tp_memcpy(comm, tsk->comm, TASK_COMM_LEN)
 443                 tp_assign(tid,  tsk->pid)
 444                 tp_assign(delay, delay)
 445         )
 446         TP_perf_assign(
 447                 __perf_count(delay)
 448         ),
 449
 450         TP_printk("comm=%s tid=%d delay=%Lu [ns]",
 451                         __entry->comm, __entry->tid,
 452                         (unsigned long long)__entry->delay)
 453 )
 454
 455
 456 /*
 457  * Tracepoint for accounting wait time (time the task is runnable
 458  * but not actually running due to scheduler contention).
 459  */
 460 DEFINE_EVENT(sched_stat_template, sched_stat_wait,
 461              TP_PROTO(struct task_struct *tsk, u64 delay),
 462              TP_ARGS(tsk, delay))
 463
 464 /*
 465  * Tracepoint for accounting sleep time (time the task is not runnable,
 466  * including iowait, see below).
 467  */
 468 DEFINE_EVENT(sched_stat_template, sched_stat_sleep,
 469              TP_PROTO(struct task_struct *tsk, u64 delay),
 470              TP_ARGS(tsk, delay))
 471
 472 /*
 473  * Tracepoint for accounting iowait time (time the task is not runnable
 474  * due to waiting on IO to complete).
 475  */
 476 DEFINE_EVENT(sched_stat_template, sched_stat_iowait,
 477              TP_PROTO(struct task_struct *tsk, u64 delay),
 478              TP_ARGS(tsk, delay))
 479
 480 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,3,0))
 481 /*
 482  * Tracepoint for accounting blocked time (time the task is in uninterruptible).
 483  */
 484 DEFINE_EVENT(sched_stat_template, sched_stat_blocked,
 485              TP_PROTO(struct task_struct *tsk, u64 delay),
 486              TP_ARGS(tsk, delay))
 487 #endif
 488
 489 /*
 490  * Tracepoint for accounting runtime (time the task is executing
 491  * on a CPU).
 492  */
 493 TRACE_EVENT(sched_stat_runtime,
 494
 495         TP_PROTO(struct task_struct *tsk, u64 runtime, u64 vruntime),
 496
 497         TP_ARGS(tsk, runtime, vruntime),
 498
 499         TP_STRUCT__entry(
 500                 __array_text( char,     comm,   TASK_COMM_LEN   )
 501                 __field( pid_t, tid                     )
 502                 __field( u64,   runtime                 )
 503                 __field( u64,   vruntime                        )
 504         ),
 505
 506         TP_fast_assign(
 507                 tp_memcpy(comm, tsk->comm, TASK_COMM_LEN)
 508                 tp_assign(tid, tsk->pid)
 509                 tp_assign(runtime, runtime)
 510                 tp_assign(vruntime, vruntime)
 511         )
 512         TP_perf_assign(
 513                 __perf_count(runtime)
 514 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,6,0))
 515                 __perf_task(tsk)
 516 #endif
 517         ),
 518
 519         TP_printk("comm=%s tid=%d runtime=%Lu [ns] vruntime=%Lu [ns]",
 520                         __entry->comm, __entry->tid,
 521                         (unsigned long long)__entry->runtime,
 522                         (unsigned long long)__entry->vruntime)
 523 )
 524 #endif
 525
 526 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,37))
 527 /*
 528  * Tracepoint for showing priority inheritance modifying a tasks
 529  * priority.
 530  */
 531 TRACE_EVENT(sched_pi_setprio,
 532
 533         TP_PROTO(struct task_struct *tsk, int newprio),
 534
 535         TP_ARGS(tsk, newprio),
 536
 537         TP_STRUCT__entry(
 538                 __array_text( char,     comm,   TASK_COMM_LEN   )
 539                 __field( pid_t, tid                     )
 540                 __field( int,   oldprio                 )
 541                 __field( int,   newprio                 )
 542         ),
 543
 544         TP_fast_assign(
 545                 tp_memcpy(comm, tsk->comm, TASK_COMM_LEN)
 546                 tp_assign(tid, tsk->pid)
 547                 tp_assign(oldprio, tsk->prio - MAX_RT_PRIO)
 548                 tp_assign(newprio, newprio - MAX_RT_PRIO)
 549         ),
 550
 551         TP_printk("comm=%s tid=%d oldprio=%d newprio=%d",
 552                         __entry->comm, __entry->tid,
 553                         __entry->oldprio, __entry->newprio)
 554 )
 555 #endif
 556
 557 #endif /* _TRACE_SCHED_H */
 558
 559 /* This part must be outside protection */
 560 #include "../../../probes/define_trace.h"