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.h>
   8 #include <linux/tracepoint.h>
   9
  10 /*
  11  * Tracepoint for calling kthread_stop, performed to end a kthread:
  12  */
  13 TRACE_EVENT(sched_kthread_stop,
  14
  15         TP_PROTO(struct task_struct *t),
  16
  17         TP_ARGS(t),
  18
  19         TP_STRUCT__entry(
  20                 __array(        char,   comm,   TASK_COMM_LEN   )
  21                 __field(        pid_t,  pid                     )
  22         ),
  23
  24         TP_fast_assign(
  25                 memcpy(__entry->comm, t->comm, TASK_COMM_LEN);
  26                 __entry->pid    = t->pid;
  27         ),
  28
  29         TP_printk("task %s:%d", __entry->comm, __entry->pid)
  30 );
  31
  32 /*
  33  * Tracepoint for the return value of the kthread stopping:
  34  */
  35 TRACE_EVENT(sched_kthread_stop_ret,
  36
  37         TP_PROTO(int ret),
  38
  39         TP_ARGS(ret),
  40
  41         TP_STRUCT__entry(
  42                 __field(        int,    ret     )
  43         ),
  44
  45         TP_fast_assign(
  46                 __entry->ret    = ret;
  47         ),
  48
  49         TP_printk("ret %d", __entry->ret)
  50 );
  51
  52 /*
  53  * Tracepoint for waiting on task to unschedule:
  54  *
  55  * (NOTE: the 'rq' argument is not used by generic trace events,
  56  *        but used by the latency tracer plugin. )
  57  */
  58 TRACE_EVENT(sched_wait_task,
  59
  60         TP_PROTO(struct rq *rq, struct task_struct *p),
  61
  62         TP_ARGS(rq, p),
  63
  64         TP_STRUCT__entry(
  65                 __array(        char,   comm,   TASK_COMM_LEN   )
  66                 __field(        pid_t,  pid                     )
  67                 __field(        int,    prio                    )
  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;
  74         ),
  75
  76         TP_printk("task %s:%d [%d]",
  77                   __entry->comm, __entry->pid, __entry->prio)
  78 );
  79
  80 /*
  81  * Tracepoint for waking up a task:
  82  *
  83  * (NOTE: the 'rq' argument is not used by generic trace events,
  84  *        but used by the latency tracer plugin. )
  85  */
  86 TRACE_EVENT(sched_wakeup,
  87
  88         TP_PROTO(struct rq *rq, struct task_struct *p, int success),
  89
  90         TP_ARGS(rq, p, success),
  91
  92         TP_STRUCT__entry(
  93                 __array(        char,   comm,   TASK_COMM_LEN   )
  94                 __field(        pid_t,  pid                     )
  95                 __field(        int,    prio                    )
  96                 __field(        int,    success                 )
  97                 __field(        int,    cpu                     )
  98         ),
  99
 100         TP_fast_assign(
 101                 memcpy(__entry->comm, p->comm, TASK_COMM_LEN);
 102                 __entry->pid            = p->pid;
 103                 __entry->prio           = p->prio;
 104                 __entry->success        = success;
 105                 __entry->cpu            = task_cpu(p);
 106         ),
 107
 108         TP_printk("task %s:%d [%d] success=%d [%03d]",
 109                   __entry->comm, __entry->pid, __entry->prio,
 110                   __entry->success, __entry->cpu)
 111 );
 112
 113 /*
 114  * Tracepoint for waking up a new task:
 115  *
 116  * (NOTE: the 'rq' argument is not used by generic trace events,
 117  *        but used by the latency tracer plugin. )
 118  */
 119 TRACE_EVENT(sched_wakeup_new,
 120
 121         TP_PROTO(struct rq *rq, struct task_struct *p, int success),
 122
 123         TP_ARGS(rq, p, success),
 124
 125         TP_STRUCT__entry(
 126                 __array(        char,   comm,   TASK_COMM_LEN   )
 127                 __field(        pid_t,  pid                     )
 128                 __field(        int,    prio                    )
 129                 __field(        int,    success                 )
 130                 __field(        int,    cpu                     )
 131         ),
 132
 133         TP_fast_assign(
 134                 memcpy(__entry->comm, p->comm, TASK_COMM_LEN);
 135                 __entry->pid            = p->pid;
 136                 __entry->prio           = p->prio;
 137                 __entry->success        = success;
 138                 __entry->cpu            = task_cpu(p);
 139         ),
 140
 141         TP_printk("task %s:%d [%d] success=%d [%03d]",
 142                   __entry->comm, __entry->pid, __entry->prio,
 143                   __entry->success, __entry->cpu)
 144 );
 145
 146 /*
 147  * Tracepoint for task switches, performed by the scheduler:
 148  *
 149  * (NOTE: the 'rq' argument is not used by generic trace events,
 150  *        but used by the latency tracer plugin. )
 151  */
 152 TRACE_EVENT(sched_switch,
 153
 154         TP_PROTO(struct rq *rq, struct task_struct *prev,
 155                  struct task_struct *next),
 156
 157         TP_ARGS(rq, prev, next),
 158
 159         TP_STRUCT__entry(
 160                 __array(        char,   prev_comm,      TASK_COMM_LEN   )
 161                 __field(        pid_t,  prev_pid                        )
 162                 __field(        int,    prev_prio                       )
 163                 __field(        long,   prev_state                      )
 164                 __array(        char,   next_comm,      TASK_COMM_LEN   )
 165                 __field(        pid_t,  next_pid                        )
 166                 __field(        int,    next_prio                       )
 167         ),
 168
 169         TP_fast_assign(
 170                 memcpy(__entry->next_comm, next->comm, TASK_COMM_LEN);
 171                 __entry->prev_pid       = prev->pid;
 172                 __entry->prev_prio      = prev->prio;
 173                 __entry->prev_state     = prev->state;
 174                 memcpy(__entry->prev_comm, prev->comm, TASK_COMM_LEN);
 175                 __entry->next_pid       = next->pid;
 176                 __entry->next_prio      = next->prio;
 177         ),
 178
 179         TP_printk("task %s:%d [%d] (%s) ==> %s:%d [%d]",
 180                 __entry->prev_comm, __entry->prev_pid, __entry->prev_prio,
 181                 __entry->prev_state ?
 182                   __print_flags(__entry->prev_state, "|",
 183                                 { 1, "S"} , { 2, "D" }, { 4, "T" }, { 8, "t" },
 184                                 { 16, "Z" }, { 32, "X" }, { 64, "x" },
 185                                 { 128, "W" }) : "R",
 186                 __entry->next_comm, __entry->next_pid, __entry->next_prio)
 187 );
 188
 189 /*
 190  * Tracepoint for a task being migrated:
 191  */
 192 TRACE_EVENT(sched_migrate_task,
 193
 194         TP_PROTO(struct task_struct *p, int dest_cpu),
 195
 196         TP_ARGS(p, dest_cpu),
 197
 198         TP_STRUCT__entry(
 199                 __array(        char,   comm,   TASK_COMM_LEN   )
 200                 __field(        pid_t,  pid                     )
 201                 __field(        int,    prio                    )
 202                 __field(        int,    orig_cpu                )
 203                 __field(        int,    dest_cpu                )
 204         ),
 205
 206         TP_fast_assign(
 207                 memcpy(__entry->comm, p->comm, TASK_COMM_LEN);
 208                 __entry->pid            = p->pid;
 209                 __entry->prio           = p->prio;
 210                 __entry->orig_cpu       = task_cpu(p);
 211                 __entry->dest_cpu       = dest_cpu;
 212         ),
 213
 214         TP_printk("task %s:%d [%d] from: %d  to: %d",
 215                   __entry->comm, __entry->pid, __entry->prio,
 216                   __entry->orig_cpu, __entry->dest_cpu)
 217 );
 218
 219 /*
 220  * Tracepoint for freeing a task:
 221  */
 222 TRACE_EVENT(sched_process_free,
 223
 224         TP_PROTO(struct task_struct *p),
 225
 226         TP_ARGS(p),
 227
 228         TP_STRUCT__entry(
 229                 __array(        char,   comm,   TASK_COMM_LEN   )
 230                 __field(        pid_t,  pid                     )
 231                 __field(        int,    prio                    )
 232         ),
 233
 234         TP_fast_assign(
 235                 memcpy(__entry->comm, p->comm, TASK_COMM_LEN);
 236                 __entry->pid            = p->pid;
 237                 __entry->prio           = p->prio;
 238         ),
 239
 240         TP_printk("task %s:%d [%d]",
 241                   __entry->comm, __entry->pid, __entry->prio)
 242 );
 243
 244 /*
 245  * Tracepoint for a task exiting:
 246  */
 247 TRACE_EVENT(sched_process_exit,
 248
 249         TP_PROTO(struct task_struct *p),
 250
 251         TP_ARGS(p),
 252
 253         TP_STRUCT__entry(
 254                 __array(        char,   comm,   TASK_COMM_LEN   )
 255                 __field(        pid_t,  pid                     )
 256                 __field(        int,    prio                    )
 257         ),
 258
 259         TP_fast_assign(
 260                 memcpy(__entry->comm, p->comm, TASK_COMM_LEN);
 261                 __entry->pid            = p->pid;
 262                 __entry->prio           = p->prio;
 263         ),
 264
 265         TP_printk("task %s:%d [%d]",
 266                   __entry->comm, __entry->pid, __entry->prio)
 267 );
 268
 269 /*
 270  * Tracepoint for a waiting task:
 271  */
 272 TRACE_EVENT(sched_process_wait,
 273
 274         TP_PROTO(struct pid *pid),
 275
 276         TP_ARGS(pid),
 277
 278         TP_STRUCT__entry(
 279                 __array(        char,   comm,   TASK_COMM_LEN   )
 280                 __field(        pid_t,  pid                     )
 281                 __field(        int,    prio                    )
 282         ),
 283
 284         TP_fast_assign(
 285                 memcpy(__entry->comm, current->comm, TASK_COMM_LEN);
 286                 __entry->pid            = pid_nr(pid);
 287                 __entry->prio           = current->prio;
 288         ),
 289
 290         TP_printk("task %s:%d [%d]",
 291                   __entry->comm, __entry->pid, __entry->prio)
 292 );
 293
 294 /*
 295  * Tracepoint for do_fork:
 296  */
 297 TRACE_EVENT(sched_process_fork,
 298
 299         TP_PROTO(struct task_struct *parent, struct task_struct *child),
 300
 301         TP_ARGS(parent, child),
 302
 303         TP_STRUCT__entry(
 304                 __array(        char,   parent_comm,    TASK_COMM_LEN   )
 305                 __field(        pid_t,  parent_pid                      )
 306                 __array(        char,   child_comm,     TASK_COMM_LEN   )
 307                 __field(        pid_t,  child_pid                       )
 308         ),
 309
 310         TP_fast_assign(
 311                 memcpy(__entry->parent_comm, parent->comm, TASK_COMM_LEN);
 312                 __entry->parent_pid     = parent->pid;
 313                 memcpy(__entry->child_comm, child->comm, TASK_COMM_LEN);
 314                 __entry->child_pid      = child->pid;
 315         ),
 316
 317         TP_printk("parent %s:%d  child %s:%d",
 318                 __entry->parent_comm, __entry->parent_pid,
 319                 __entry->child_comm, __entry->child_pid)
 320 );
 321
 322 /*
 323  * Tracepoint for sending a signal:
 324  */
 325 TRACE_EVENT(sched_signal_send,
 326
 327         TP_PROTO(int sig, struct task_struct *p),
 328
 329         TP_ARGS(sig, p),
 330
 331         TP_STRUCT__entry(
 332                 __field(        int,    sig                     )
 333                 __array(        char,   comm,   TASK_COMM_LEN   )
 334                 __field(        pid_t,  pid                     )
 335         ),
 336
 337         TP_fast_assign(
 338                 memcpy(__entry->comm, p->comm, TASK_COMM_LEN);
 339                 __entry->pid    = p->pid;
 340                 __entry->sig    = sig;
 341         ),
 342
 343         TP_printk("sig: %d  task %s:%d",
 344                   __entry->sig, __entry->comm, __entry->pid)
 345 );
 346
 347 /*
 348  * XXX the below sched_stat tracepoints only apply to SCHED_OTHER/BATCH/IDLE
 349  *     adding sched_stat support to SCHED_FIFO/RR would be welcome.
 350  */
 351
 352 /*
 353  * Tracepoint for accounting wait time (time the task is runnable
 354  * but not actually running due to scheduler contention).
 355  */
 356 TRACE_EVENT(sched_stat_wait,
 357
 358         TP_PROTO(struct task_struct *tsk, u64 delay),
 359
 360         TP_ARGS(tsk, delay),
 361
 362         TP_STRUCT__entry(
 363                 __array( char,  comm,   TASK_COMM_LEN   )
 364                 __field( pid_t, pid                     )
 365                 __field( u64,   delay                   )
 366         ),
 367
 368         TP_fast_assign(
 369                 memcpy(__entry->comm, tsk->comm, TASK_COMM_LEN);
 370                 __entry->pid    = tsk->pid;
 371                 __entry->delay  = delay;
 372         )
 373         TP_perf_assign(
 374                 __perf_count(delay);
 375         ),
 376
 377         TP_printk("task: %s:%d wait: %Lu [ns]",
 378                         __entry->comm, __entry->pid,
 379                         (unsigned long long)__entry->delay)
 380 );
 381
 382 /*
 383  * Tracepoint for accounting sleep time (time the task is not runnable,
 384  * including iowait, see below).
 385  */
 386 TRACE_EVENT(sched_stat_sleep,
 387
 388         TP_PROTO(struct task_struct *tsk, u64 delay),
 389
 390         TP_ARGS(tsk, delay),
 391
 392         TP_STRUCT__entry(
 393                 __array( char,  comm,   TASK_COMM_LEN   )
 394                 __field( pid_t, pid                     )
 395                 __field( u64,   delay                   )
 396         ),
 397
 398         TP_fast_assign(
 399                 memcpy(__entry->comm, tsk->comm, TASK_COMM_LEN);
 400                 __entry->pid    = tsk->pid;
 401                 __entry->delay  = delay;
 402         )
 403         TP_perf_assign(
 404                 __perf_count(delay);
 405         ),
 406
 407         TP_printk("task: %s:%d sleep: %Lu [ns]",
 408                         __entry->comm, __entry->pid,
 409                         (unsigned long long)__entry->delay)
 410 );
 411
 412 /*
 413  * Tracepoint for accounting iowait time (time the task is not runnable
 414  * due to waiting on IO to complete).
 415  */
 416 TRACE_EVENT(sched_stat_iowait,
 417
 418         TP_PROTO(struct task_struct *tsk, u64 delay),
 419
 420         TP_ARGS(tsk, delay),
 421
 422         TP_STRUCT__entry(
 423                 __array( char,  comm,   TASK_COMM_LEN   )
 424                 __field( pid_t, pid                     )
 425                 __field( u64,   delay                   )
 426         ),
 427
 428         TP_fast_assign(
 429                 memcpy(__entry->comm, tsk->comm, TASK_COMM_LEN);
 430                 __entry->pid    = tsk->pid;
 431                 __entry->delay  = delay;
 432         )
 433         TP_perf_assign(
 434                 __perf_count(delay);
 435         ),
 436
 437         TP_printk("task: %s:%d iowait: %Lu [ns]",
 438                         __entry->comm, __entry->pid,
 439                         (unsigned long long)__entry->delay)
 440 );
 441
 442 #endif /* _TRACE_SCHED_H */
 443
 444 /* This part must be outside protection */
 445 #include <trace/define_trace.h>