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   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("comm=%s pid=%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("comm=%s pid=%d prio=%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 DECLARE_EVENT_CLASS(sched_wakeup_template,
  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,    target_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->target_cpu     = task_cpu(p);
 106         ),
 107
 108         TP_printk("comm=%s pid=%d prio=%d success=%d target_cpu=%03d",
 109                   __entry->comm, __entry->pid, __entry->prio,
 110                   __entry->success, __entry->target_cpu)
 111 );
 112
 113 DEFINE_EVENT(sched_wakeup_template, sched_wakeup,
 114              TP_PROTO(struct rq *rq, struct task_struct *p, int success),
 115              TP_ARGS(rq, p, success));
 116
 117 /*
 118  * Tracepoint for waking up a new task:
 119  *
 120  * (NOTE: the 'rq' argument is not used by generic trace events,
 121  *        but used by the latency tracer plugin. )
 122  */
 123 DEFINE_EVENT(sched_wakeup_template, sched_wakeup_new,
 124              TP_PROTO(struct rq *rq, struct task_struct *p, int success),
 125              TP_ARGS(rq, p, success));
 126
 127 /*
 128  * Tracepoint for task switches, performed by the scheduler:
 129  *
 130  * (NOTE: the 'rq' argument is not used by generic trace events,
 131  *        but used by the latency tracer plugin. )
 132  */
 133 TRACE_EVENT(sched_switch,
 134
 135         TP_PROTO(struct rq *rq, struct task_struct *prev,
 136                  struct task_struct *next),
 137
 138         TP_ARGS(rq, prev, next),
 139
 140         TP_STRUCT__entry(
 141                 __array(        char,   prev_comm,      TASK_COMM_LEN   )
 142                 __field(        pid_t,  prev_pid                        )
 143                 __field(        int,    prev_prio                       )
 144                 __field(        long,   prev_state                      )
 145                 __array(        char,   next_comm,      TASK_COMM_LEN   )
 146                 __field(        pid_t,  next_pid                        )
 147                 __field(        int,    next_prio                       )
 148         ),
 149
 150         TP_fast_assign(
 151                 memcpy(__entry->next_comm, next->comm, TASK_COMM_LEN);
 152                 __entry->prev_pid       = prev->pid;
 153                 __entry->prev_prio      = prev->prio;
 154                 __entry->prev_state     = prev->state;
 155                 memcpy(__entry->prev_comm, prev->comm, TASK_COMM_LEN);
 156                 __entry->next_pid       = next->pid;
 157                 __entry->next_prio      = next->prio;
 158         ),
 159
 160         TP_printk("prev_comm=%s prev_pid=%d prev_prio=%d prev_state=%s ==> next_comm=%s next_pid=%d next_prio=%d",
 161                 __entry->prev_comm, __entry->prev_pid, __entry->prev_prio,
 162                 __entry->prev_state ?
 163                   __print_flags(__entry->prev_state, "|",
 164                                 { 1, "S"} , { 2, "D" }, { 4, "T" }, { 8, "t" },
 165                                 { 16, "Z" }, { 32, "X" }, { 64, "x" },
 166                                 { 128, "W" }) : "R",
 167                 __entry->next_comm, __entry->next_pid, __entry->next_prio)
 168 );
 169
 170 /*
 171  * Tracepoint for a task being migrated:
 172  */
 173 TRACE_EVENT(sched_migrate_task,
 174
 175         TP_PROTO(struct task_struct *p, int dest_cpu),
 176
 177         TP_ARGS(p, dest_cpu),
 178
 179         TP_STRUCT__entry(
 180                 __array(        char,   comm,   TASK_COMM_LEN   )
 181                 __field(        pid_t,  pid                     )
 182                 __field(        int,    prio                    )
 183                 __field(        int,    orig_cpu                )
 184                 __field(        int,    dest_cpu                )
 185         ),
 186
 187         TP_fast_assign(
 188                 memcpy(__entry->comm, p->comm, TASK_COMM_LEN);
 189                 __entry->pid            = p->pid;
 190                 __entry->prio           = p->prio;
 191                 __entry->orig_cpu       = task_cpu(p);
 192                 __entry->dest_cpu       = dest_cpu;
 193         ),
 194
 195         TP_printk("comm=%s pid=%d prio=%d orig_cpu=%d dest_cpu=%d",
 196                   __entry->comm, __entry->pid, __entry->prio,
 197                   __entry->orig_cpu, __entry->dest_cpu)
 198 );
 199
 200 DECLARE_EVENT_CLASS(sched_process_template,
 201
 202         TP_PROTO(struct task_struct *p),
 203
 204         TP_ARGS(p),
 205
 206         TP_STRUCT__entry(
 207                 __array(        char,   comm,   TASK_COMM_LEN   )
 208                 __field(        pid_t,  pid                     )
 209                 __field(        int,    prio                    )
 210         ),
 211
 212         TP_fast_assign(
 213                 memcpy(__entry->comm, p->comm, TASK_COMM_LEN);
 214                 __entry->pid            = p->pid;
 215                 __entry->prio           = p->prio;
 216         ),
 217
 218         TP_printk("comm=%s pid=%d prio=%d",
 219                   __entry->comm, __entry->pid, __entry->prio)
 220 );
 221
 222 /*
 223  * Tracepoint for freeing a task:
 224  */
 225 DEFINE_EVENT(sched_process_template, sched_process_free,
 226              TP_PROTO(struct task_struct *p),
 227              TP_ARGS(p));
 228
 229
 230 /*
 231  * Tracepoint for a task exiting:
 232  */
 233 DEFINE_EVENT(sched_process_template, sched_process_exit,
 234              TP_PROTO(struct task_struct *p),
 235              TP_ARGS(p));
 236
 237 /*
 238  * Tracepoint for a waiting task:
 239  */
 240 TRACE_EVENT(sched_process_wait,
 241
 242         TP_PROTO(struct pid *pid),
 243
 244         TP_ARGS(pid),
 245
 246         TP_STRUCT__entry(
 247                 __array(        char,   comm,   TASK_COMM_LEN   )
 248                 __field(        pid_t,  pid                     )
 249                 __field(        int,    prio                    )
 250         ),
 251
 252         TP_fast_assign(
 253                 memcpy(__entry->comm, current->comm, TASK_COMM_LEN);
 254                 __entry->pid            = pid_nr(pid);
 255                 __entry->prio           = current->prio;
 256         ),
 257
 258         TP_printk("comm=%s pid=%d prio=%d",
 259                   __entry->comm, __entry->pid, __entry->prio)
 260 );
 261
 262 /*
 263  * Tracepoint for do_fork:
 264  */
 265 TRACE_EVENT(sched_process_fork,
 266
 267         TP_PROTO(struct task_struct *parent, struct task_struct *child),
 268
 269         TP_ARGS(parent, child),
 270
 271         TP_STRUCT__entry(
 272                 __array(        char,   parent_comm,    TASK_COMM_LEN   )
 273                 __field(        pid_t,  parent_pid                      )
 274                 __array(        char,   child_comm,     TASK_COMM_LEN   )
 275                 __field(        pid_t,  child_pid                       )
 276         ),
 277
 278         TP_fast_assign(
 279                 memcpy(__entry->parent_comm, parent->comm, TASK_COMM_LEN);
 280                 __entry->parent_pid     = parent->pid;
 281                 memcpy(__entry->child_comm, child->comm, TASK_COMM_LEN);
 282                 __entry->child_pid      = child->pid;
 283         ),
 284
 285         TP_printk("comm=%s pid=%d child_comm=%s child_pid=%d",
 286                 __entry->parent_comm, __entry->parent_pid,
 287                 __entry->child_comm, __entry->child_pid)
 288 );
 289
 290 /*
 291  * Tracepoint for sending a signal:
 292  */
 293 TRACE_EVENT(sched_signal_send,
 294
 295         TP_PROTO(int sig, struct task_struct *p),
 296
 297         TP_ARGS(sig, p),
 298
 299         TP_STRUCT__entry(
 300                 __field(        int,    sig                     )
 301                 __array(        char,   comm,   TASK_COMM_LEN   )
 302                 __field(        pid_t,  pid                     )
 303         ),
 304
 305         TP_fast_assign(
 306                 memcpy(__entry->comm, p->comm, TASK_COMM_LEN);
 307                 __entry->pid    = p->pid;
 308                 __entry->sig    = sig;
 309         ),
 310
 311         TP_printk("sig=%d comm=%s pid=%d",
 312                   __entry->sig, __entry->comm, __entry->pid)
 313 );
 314
 315 /*
 316  * XXX the below sched_stat tracepoints only apply to SCHED_OTHER/BATCH/IDLE
 317  *     adding sched_stat support to SCHED_FIFO/RR would be welcome.
 318  */
 319 DECLARE_EVENT_CLASS(sched_stat_template,
 320
 321         TP_PROTO(struct task_struct *tsk, u64 delay),
 322
 323         TP_ARGS(tsk, delay),
 324
 325         TP_STRUCT__entry(
 326                 __array( char,  comm,   TASK_COMM_LEN   )
 327                 __field( pid_t, pid                     )
 328                 __field( u64,   delay                   )
 329         ),
 330
 331         TP_fast_assign(
 332                 memcpy(__entry->comm, tsk->comm, TASK_COMM_LEN);
 333                 __entry->pid    = tsk->pid;
 334                 __entry->delay  = delay;
 335         )
 336         TP_perf_assign(
 337                 __perf_count(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 runtime (time the task is executing
 372  * on a CPU).
 373  */
 374 TRACE_EVENT(sched_stat_runtime,
 375
 376         TP_PROTO(struct task_struct *tsk, u64 runtime, u64 vruntime),
 377
 378         TP_ARGS(tsk, runtime, vruntime),
 379
 380         TP_STRUCT__entry(
 381                 __array( char,  comm,   TASK_COMM_LEN   )
 382                 __field( pid_t, pid                     )
 383                 __field( u64,   runtime                 )
 384                 __field( u64,   vruntime                        )
 385         ),
 386
 387         TP_fast_assign(
 388                 memcpy(__entry->comm, tsk->comm, TASK_COMM_LEN);
 389                 __entry->pid            = tsk->pid;
 390                 __entry->runtime        = runtime;
 391                 __entry->vruntime       = vruntime;
 392         )
 393         TP_perf_assign(
 394                 __perf_count(runtime);
 395         ),
 396
 397         TP_printk("comm=%s pid=%d runtime=%Lu [ns] vruntime=%Lu [ns]",
 398                         __entry->comm, __entry->pid,
 399                         (unsigned long long)__entry->runtime,
 400                         (unsigned long long)__entry->vruntime)
 401 );
 402
 403 #endif /* _TRACE_SCHED_H */
 404
 405 /* This part must be outside protection */
 406 #include <trace/define_trace.h>