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 #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, int success),
  59
  60         TP_ARGS(p, success),
  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;
  74                 __entry->success        = success;
  75                 __entry->target_cpu     = task_cpu(p);
  76         )
  77         TP_perf_assign(
  78                 __perf_task(p);
  79         ),
  80
  81         TP_printk("comm=%s pid=%d prio=%d success=%d target_cpu=%03d",
  82                   __entry->comm, __entry->pid, __entry->prio,
  83                   __entry->success, __entry->target_cpu)
  84 );
  85
  86 DEFINE_EVENT(sched_wakeup_template, sched_wakeup,
  87              TP_PROTO(struct task_struct *p, int success),
  88              TP_ARGS(p, success));
  89
  90 /*
  91  * Tracepoint for waking up a new task:
  92  */
  93 DEFINE_EVENT(sched_wakeup_template, sched_wakeup_new,
  94              TP_PROTO(struct task_struct *p, int success),
  95              TP_ARGS(p, success));
  96
  97 #ifdef CREATE_TRACE_POINTS
  98 static inline long __trace_sched_switch_state(struct task_struct *p)
  99 {
 100         long state = p->state;
 101
 102 #ifdef CONFIG_PREEMPT
 103         /*
 104          * For all intents and purposes a preempted task is a running task.
 105          */
 106         if (task_thread_info(p)->preempt_count & PREEMPT_ACTIVE)
 107                 state = TASK_RUNNING | TASK_STATE_MAX;
 108 #endif
 109
 110         return state;
 111 }
 112 #endif
 113
 114 /*
 115  * Tracepoint for task switches, performed by the scheduler:
 116  */
 117 TRACE_EVENT(sched_switch,
 118
 119         TP_PROTO(struct task_struct *prev,
 120                  struct task_struct *next),
 121
 122         TP_ARGS(prev, next),
 123
 124         TP_STRUCT__entry(
 125                 __array(        char,   prev_comm,      TASK_COMM_LEN   )
 126                 __field(        pid_t,  prev_pid                        )
 127                 __field(        int,    prev_prio                       )
 128                 __field(        long,   prev_state                      )
 129                 __array(        char,   next_comm,      TASK_COMM_LEN   )
 130                 __field(        pid_t,  next_pid                        )
 131                 __field(        int,    next_prio                       )
 132         ),
 133
 134         TP_fast_assign(
 135                 memcpy(__entry->next_comm, next->comm, TASK_COMM_LEN);
 136                 __entry->prev_pid       = prev->pid;
 137                 __entry->prev_prio      = prev->prio;
 138                 __entry->prev_state     = __trace_sched_switch_state(prev);
 139                 memcpy(__entry->prev_comm, prev->comm, TASK_COMM_LEN);
 140                 __entry->next_pid       = next->pid;
 141                 __entry->next_prio      = next->prio;
 142         ),
 143
 144         TP_printk("prev_comm=%s prev_pid=%d prev_prio=%d prev_state=%s%s ==> next_comm=%s next_pid=%d next_prio=%d",
 145                 __entry->prev_comm, __entry->prev_pid, __entry->prev_prio,
 146                 __entry->prev_state & (TASK_STATE_MAX-1) ?
 147                   __print_flags(__entry->prev_state & (TASK_STATE_MAX-1), "|",
 148                                 { 1, "S"} , { 2, "D" }, { 4, "T" }, { 8, "t" },
 149                                 { 16, "Z" }, { 32, "X" }, { 64, "x" },
 150                                 { 128, "W" }) : "R",
 151                 __entry->prev_state & TASK_STATE_MAX ? "+" : "",
 152                 __entry->next_comm, __entry->next_pid, __entry->next_prio)
 153 );
 154
 155 /*
 156  * Tracepoint for a task being migrated:
 157  */
 158 TRACE_EVENT(sched_migrate_task,
 159
 160         TP_PROTO(struct task_struct *p, int dest_cpu),
 161
 162         TP_ARGS(p, dest_cpu),
 163
 164         TP_STRUCT__entry(
 165                 __array(        char,   comm,   TASK_COMM_LEN   )
 166                 __field(        pid_t,  pid                     )
 167                 __field(        int,    prio                    )
 168                 __field(        int,    orig_cpu                )
 169                 __field(        int,    dest_cpu                )
 170         ),
 171
 172         TP_fast_assign(
 173                 memcpy(__entry->comm, p->comm, TASK_COMM_LEN);
 174                 __entry->pid            = p->pid;
 175                 __entry->prio           = p->prio;
 176                 __entry->orig_cpu       = task_cpu(p);
 177                 __entry->dest_cpu       = dest_cpu;
 178         ),
 179
 180         TP_printk("comm=%s pid=%d prio=%d orig_cpu=%d dest_cpu=%d",
 181                   __entry->comm, __entry->pid, __entry->prio,
 182                   __entry->orig_cpu, __entry->dest_cpu)
 183 );
 184
 185 DECLARE_EVENT_CLASS(sched_process_template,
 186
 187         TP_PROTO(struct task_struct *p),
 188
 189         TP_ARGS(p),
 190
 191         TP_STRUCT__entry(
 192                 __array(        char,   comm,   TASK_COMM_LEN   )
 193                 __field(        pid_t,  pid                     )
 194                 __field(        int,    prio                    )
 195         ),
 196
 197         TP_fast_assign(
 198                 memcpy(__entry->comm, p->comm, TASK_COMM_LEN);
 199                 __entry->pid            = p->pid;
 200                 __entry->prio           = p->prio;
 201         ),
 202
 203         TP_printk("comm=%s pid=%d prio=%d",
 204                   __entry->comm, __entry->pid, __entry->prio)
 205 );
 206
 207 /*
 208  * Tracepoint for freeing a task:
 209  */
 210 DEFINE_EVENT(sched_process_template, sched_process_free,
 211              TP_PROTO(struct task_struct *p),
 212              TP_ARGS(p));
 213
 214
 215 /*
 216  * Tracepoint for a task exiting:
 217  */
 218 DEFINE_EVENT(sched_process_template, sched_process_exit,
 219              TP_PROTO(struct task_struct *p),
 220              TP_ARGS(p));
 221
 222 /*
 223  * Tracepoint for waiting on task to unschedule:
 224  */
 225 DEFINE_EVENT(sched_process_template, sched_wait_task,
 226         TP_PROTO(struct task_struct *p),
 227         TP_ARGS(p));
 228
 229 /*
 230  * Tracepoint for a waiting task:
 231  */
 232 TRACE_EVENT(sched_process_wait,
 233
 234         TP_PROTO(struct pid *pid),
 235
 236         TP_ARGS(pid),
 237
 238         TP_STRUCT__entry(
 239                 __array(        char,   comm,   TASK_COMM_LEN   )
 240                 __field(        pid_t,  pid                     )
 241                 __field(        int,    prio                    )
 242         ),
 243
 244         TP_fast_assign(
 245                 memcpy(__entry->comm, current->comm, TASK_COMM_LEN);
 246                 __entry->pid            = pid_nr(pid);
 247                 __entry->prio           = current->prio;
 248         ),
 249
 250         TP_printk("comm=%s pid=%d prio=%d",
 251                   __entry->comm, __entry->pid, __entry->prio)
 252 );
 253
 254 /*
 255  * Tracepoint for do_fork:
 256  */
 257 TRACE_EVENT(sched_process_fork,
 258
 259         TP_PROTO(struct task_struct *parent, struct task_struct *child),
 260
 261         TP_ARGS(parent, child),
 262
 263         TP_STRUCT__entry(
 264                 __array(        char,   parent_comm,    TASK_COMM_LEN   )
 265                 __field(        pid_t,  parent_pid                      )
 266                 __array(        char,   child_comm,     TASK_COMM_LEN   )
 267                 __field(        pid_t,  child_pid                       )
 268         ),
 269
 270         TP_fast_assign(
 271                 memcpy(__entry->parent_comm, parent->comm, TASK_COMM_LEN);
 272                 __entry->parent_pid     = parent->pid;
 273                 memcpy(__entry->child_comm, child->comm, TASK_COMM_LEN);
 274                 __entry->child_pid      = child->pid;
 275         ),
 276
 277         TP_printk("comm=%s pid=%d child_comm=%s child_pid=%d",
 278                 __entry->parent_comm, __entry->parent_pid,
 279                 __entry->child_comm, __entry->child_pid)
 280 );
 281
 282 /*
 283  * Tracepoint for exec:
 284  */
 285 TRACE_EVENT(sched_process_exec,
 286
 287         TP_PROTO(struct task_struct *p, pid_t old_pid,
 288                  struct linux_binprm *bprm),
 289
 290         TP_ARGS(p, old_pid, bprm),
 291
 292         TP_STRUCT__entry(
 293                 __string(       filename,       bprm->filename  )
 294                 __field(        pid_t,          pid             )
 295                 __field(        pid_t,          old_pid         )
 296         ),
 297
 298         TP_fast_assign(
 299                 __assign_str(filename, bprm->filename);
 300                 __entry->pid            = p->pid;
 301                 __entry->old_pid        = old_pid;
 302         ),
 303
 304         TP_printk("filename=%s pid=%d old_pid=%d", __get_str(filename),
 305                   __entry->pid, __entry->old_pid)
 306 );
 307
 308 /*
 309  * XXX the below sched_stat tracepoints only apply to SCHED_OTHER/BATCH/IDLE
 310  *     adding sched_stat support to SCHED_FIFO/RR would be welcome.
 311  */
 312 DECLARE_EVENT_CLASS(sched_stat_template,
 313
 314         TP_PROTO(struct task_struct *tsk, u64 delay),
 315
 316         TP_ARGS(tsk, delay),
 317
 318         TP_STRUCT__entry(
 319                 __array( char,  comm,   TASK_COMM_LEN   )
 320                 __field( pid_t, pid                     )
 321                 __field( u64,   delay                   )
 322         ),
 323
 324         TP_fast_assign(
 325                 memcpy(__entry->comm, tsk->comm, TASK_COMM_LEN);
 326                 __entry->pid    = tsk->pid;
 327                 __entry->delay  = delay;
 328         )
 329         TP_perf_assign(
 330                 __perf_count(delay);
 331                 __perf_task(tsk);
 332         ),
 333
 334         TP_printk("comm=%s pid=%d delay=%Lu [ns]",
 335                         __entry->comm, __entry->pid,
 336                         (unsigned long long)__entry->delay)
 337 );
 338
 339
 340 /*
 341  * Tracepoint for accounting wait time (time the task is runnable
 342  * but not actually running due to scheduler contention).
 343  */
 344 DEFINE_EVENT(sched_stat_template, sched_stat_wait,
 345              TP_PROTO(struct task_struct *tsk, u64 delay),
 346              TP_ARGS(tsk, delay));
 347
 348 /*
 349  * Tracepoint for accounting sleep time (time the task is not runnable,
 350  * including iowait, see below).
 351  */
 352 DEFINE_EVENT(sched_stat_template, sched_stat_sleep,
 353              TP_PROTO(struct task_struct *tsk, u64 delay),
 354              TP_ARGS(tsk, delay));
 355
 356 /*
 357  * Tracepoint for accounting iowait time (time the task is not runnable
 358  * due to waiting on IO to complete).
 359  */
 360 DEFINE_EVENT(sched_stat_template, sched_stat_iowait,
 361              TP_PROTO(struct task_struct *tsk, u64 delay),
 362              TP_ARGS(tsk, delay));
 363
 364 /*
 365  * Tracepoint for accounting blocked time (time the task is in uninterruptible).
 366  */
 367 DEFINE_EVENT(sched_stat_template, sched_stat_blocked,
 368              TP_PROTO(struct task_struct *tsk, u64 delay),
 369              TP_ARGS(tsk, delay));
 370
 371 /*
 372  * Tracepoint for accounting runtime (time the task is executing
 373  * on a CPU).
 374  */
 375 TRACE_EVENT(sched_stat_runtime,
 376
 377         TP_PROTO(struct task_struct *tsk, u64 runtime, u64 vruntime),
 378
 379         TP_ARGS(tsk, runtime, vruntime),
 380
 381         TP_STRUCT__entry(
 382                 __array( char,  comm,   TASK_COMM_LEN   )
 383                 __field( pid_t, pid                     )
 384                 __field( u64,   runtime                 )
 385                 __field( u64,   vruntime                        )
 386         ),
 387
 388         TP_fast_assign(
 389                 memcpy(__entry->comm, tsk->comm, TASK_COMM_LEN);
 390                 __entry->pid            = tsk->pid;
 391                 __entry->runtime        = runtime;
 392                 __entry->vruntime       = vruntime;
 393         )
 394         TP_perf_assign(
 395                 __perf_count(runtime);
 396         ),
 397
 398         TP_printk("comm=%s pid=%d runtime=%Lu [ns] vruntime=%Lu [ns]",
 399                         __entry->comm, __entry->pid,
 400                         (unsigned long long)__entry->runtime,
 401                         (unsigned long long)__entry->vruntime)
 402 );
 403
 404 /*
 405  * Tracepoint for showing priority inheritance modifying a tasks
 406  * priority.
 407  */
 408 TRACE_EVENT(sched_pi_setprio,
 409
 410         TP_PROTO(struct task_struct *tsk, int newprio),
 411
 412         TP_ARGS(tsk, newprio),
 413
 414         TP_STRUCT__entry(
 415                 __array( char,  comm,   TASK_COMM_LEN   )
 416                 __field( pid_t, pid                     )
 417                 __field( int,   oldprio                 )
 418                 __field( int,   newprio                 )
 419         ),
 420
 421         TP_fast_assign(
 422                 memcpy(__entry->comm, tsk->comm, TASK_COMM_LEN);
 423                 __entry->pid            = tsk->pid;
 424                 __entry->oldprio        = tsk->prio;
 425                 __entry->newprio        = newprio;
 426         ),
 427
 428         TP_printk("comm=%s pid=%d oldprio=%d newprio=%d",
 429                         __entry->comm, __entry->pid,
 430                         __entry->oldprio, __entry->newprio)
 431 );
 432
 433 #endif /* _TRACE_SCHED_H */
 434
 435 /* This part must be outside protection */
 436 #include <trace/define_trace.h>