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("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 waking up a task:
  54  */
  55 DECLARE_EVENT_CLASS(sched_wakeup_template,
  56
  57         TP_PROTO(struct task_struct *p, int success),
  58
  59         TP_ARGS(p, success),
  60
  61         TP_STRUCT__entry(
  62                 __array(        char,   comm,   TASK_COMM_LEN   )
  63                 __field(        pid_t,  pid                     )
  64                 __field(        int,    prio                    )
  65                 __field(        int,    success                 )
  66                 __field(        int,    target_cpu              )
  67         ),
  68
  69         TP_fast_assign(
  70                 memcpy(__entry->comm, p->comm, TASK_COMM_LEN);
  71                 __entry->pid            = p->pid;
  72                 __entry->prio           = p->prio;
  73                 __entry->success        = success;
  74                 __entry->target_cpu     = task_cpu(p);
  75         ),
  76
  77         TP_printk("comm=%s pid=%d prio=%d success=%d target_cpu=%03d",
  78                   __entry->comm, __entry->pid, __entry->prio,
  79                   __entry->success, __entry->target_cpu)
  80 );
  81
  82 DEFINE_EVENT(sched_wakeup_template, sched_wakeup,
  83              TP_PROTO(struct task_struct *p, int success),
  84              TP_ARGS(p, success));
  85
  86 /*
  87  * Tracepoint for waking up a new task:
  88  */
  89 DEFINE_EVENT(sched_wakeup_template, sched_wakeup_new,
  90              TP_PROTO(struct task_struct *p, int success),
  91              TP_ARGS(p, success));
  92
  93 #ifdef CREATE_TRACE_POINTS
  94 static inline long __trace_sched_switch_state(struct task_struct *p)
  95 {
  96         long state = p->state;
  97
  98 #ifdef CONFIG_PREEMPT
  99         /*
 100          * For all intents and purposes a preempted task is a running task.
 101          */
 102         if (task_thread_info(p)->preempt_count & PREEMPT_ACTIVE)
 103                 state = TASK_RUNNING;
 104 #endif
 105
 106         return state;
 107 }
 108 #endif
 109
 110 /*
 111  * Tracepoint for task switches, performed by the scheduler:
 112  */
 113 TRACE_EVENT(sched_switch,
 114
 115         TP_PROTO(struct task_struct *prev,
 116                  struct task_struct *next),
 117
 118         TP_ARGS(prev, next),
 119
 120         TP_STRUCT__entry(
 121                 __array(        char,   prev_comm,      TASK_COMM_LEN   )
 122                 __field(        pid_t,  prev_pid                        )
 123                 __field(        int,    prev_prio                       )
 124                 __field(        long,   prev_state                      )
 125                 __array(        char,   next_comm,      TASK_COMM_LEN   )
 126                 __field(        pid_t,  next_pid                        )
 127                 __field(        int,    next_prio                       )
 128         ),
 129
 130         TP_fast_assign(
 131                 memcpy(__entry->next_comm, next->comm, TASK_COMM_LEN);
 132                 __entry->prev_pid       = prev->pid;
 133                 __entry->prev_prio      = prev->prio;
 134                 __entry->prev_state     = __trace_sched_switch_state(prev);
 135                 memcpy(__entry->prev_comm, prev->comm, TASK_COMM_LEN);
 136                 __entry->next_pid       = next->pid;
 137                 __entry->next_prio      = next->prio;
 138         ),
 139
 140         TP_printk("prev_comm=%s prev_pid=%d prev_prio=%d prev_state=%s ==> next_comm=%s next_pid=%d next_prio=%d",
 141                 __entry->prev_comm, __entry->prev_pid, __entry->prev_prio,
 142                 __entry->prev_state ?
 143                   __print_flags(__entry->prev_state, "|",
 144                                 { 1, "S"} , { 2, "D" }, { 4, "T" }, { 8, "t" },
 145                                 { 16, "Z" }, { 32, "X" }, { 64, "x" },
 146                                 { 128, "W" }) : "R",
 147                 __entry->next_comm, __entry->next_pid, __entry->next_prio)
 148 );
 149
 150 /*
 151  * Tracepoint for a task being migrated:
 152  */
 153 TRACE_EVENT(sched_migrate_task,
 154
 155         TP_PROTO(struct task_struct *p, int dest_cpu),
 156
 157         TP_ARGS(p, dest_cpu),
 158
 159         TP_STRUCT__entry(
 160                 __array(        char,   comm,   TASK_COMM_LEN   )
 161                 __field(        pid_t,  pid                     )
 162                 __field(        int,    prio                    )
 163                 __field(        int,    orig_cpu                )
 164                 __field(        int,    dest_cpu                )
 165         ),
 166
 167         TP_fast_assign(
 168                 memcpy(__entry->comm, p->comm, TASK_COMM_LEN);
 169                 __entry->pid            = p->pid;
 170                 __entry->prio           = p->prio;
 171                 __entry->orig_cpu       = task_cpu(p);
 172                 __entry->dest_cpu       = dest_cpu;
 173         ),
 174
 175         TP_printk("comm=%s pid=%d prio=%d orig_cpu=%d dest_cpu=%d",
 176                   __entry->comm, __entry->pid, __entry->prio,
 177                   __entry->orig_cpu, __entry->dest_cpu)
 178 );
 179
 180 DECLARE_EVENT_CLASS(sched_process_template,
 181
 182         TP_PROTO(struct task_struct *p),
 183
 184         TP_ARGS(p),
 185
 186         TP_STRUCT__entry(
 187                 __array(        char,   comm,   TASK_COMM_LEN   )
 188                 __field(        pid_t,  pid                     )
 189                 __field(        int,    prio                    )
 190         ),
 191
 192         TP_fast_assign(
 193                 memcpy(__entry->comm, p->comm, TASK_COMM_LEN);
 194                 __entry->pid            = p->pid;
 195                 __entry->prio           = p->prio;
 196         ),
 197
 198         TP_printk("comm=%s pid=%d prio=%d",
 199                   __entry->comm, __entry->pid, __entry->prio)
 200 );
 201
 202 /*
 203  * Tracepoint for freeing a task:
 204  */
 205 DEFINE_EVENT(sched_process_template, sched_process_free,
 206              TP_PROTO(struct task_struct *p),
 207              TP_ARGS(p));
 208
 209
 210 /*
 211  * Tracepoint for a task exiting:
 212  */
 213 DEFINE_EVENT(sched_process_template, sched_process_exit,
 214              TP_PROTO(struct task_struct *p),
 215              TP_ARGS(p));
 216
 217 /*
 218  * Tracepoint for waiting on task to unschedule:
 219  */
 220 DEFINE_EVENT(sched_process_template, sched_wait_task,
 221         TP_PROTO(struct task_struct *p),
 222         TP_ARGS(p));
 223
 224 /*
 225  * Tracepoint for a waiting task:
 226  */
 227 TRACE_EVENT(sched_process_wait,
 228
 229         TP_PROTO(struct pid *pid),
 230
 231         TP_ARGS(pid),
 232
 233         TP_STRUCT__entry(
 234                 __array(        char,   comm,   TASK_COMM_LEN   )
 235                 __field(        pid_t,  pid                     )
 236                 __field(        int,    prio                    )
 237         ),
 238
 239         TP_fast_assign(
 240                 memcpy(__entry->comm, current->comm, TASK_COMM_LEN);
 241                 __entry->pid            = pid_nr(pid);
 242                 __entry->prio           = current->prio;
 243         ),
 244
 245         TP_printk("comm=%s pid=%d prio=%d",
 246                   __entry->comm, __entry->pid, __entry->prio)
 247 );
 248
 249 /*
 250  * Tracepoint for do_fork:
 251  */
 252 TRACE_EVENT(sched_process_fork,
 253
 254         TP_PROTO(struct task_struct *parent, struct task_struct *child),
 255
 256         TP_ARGS(parent, child),
 257
 258         TP_STRUCT__entry(
 259                 __array(        char,   parent_comm,    TASK_COMM_LEN   )
 260                 __field(        pid_t,  parent_pid                      )
 261                 __array(        char,   child_comm,     TASK_COMM_LEN   )
 262                 __field(        pid_t,  child_pid                       )
 263         ),
 264
 265         TP_fast_assign(
 266                 memcpy(__entry->parent_comm, parent->comm, TASK_COMM_LEN);
 267                 __entry->parent_pid     = parent->pid;
 268                 memcpy(__entry->child_comm, child->comm, TASK_COMM_LEN);
 269                 __entry->child_pid      = child->pid;
 270         ),
 271
 272         TP_printk("comm=%s pid=%d child_comm=%s child_pid=%d",
 273                 __entry->parent_comm, __entry->parent_pid,
 274                 __entry->child_comm, __entry->child_pid)
 275 );
 276
 277 /*
 278  * XXX the below sched_stat tracepoints only apply to SCHED_OTHER/BATCH/IDLE
 279  *     adding sched_stat support to SCHED_FIFO/RR would be welcome.
 280  */
 281 DECLARE_EVENT_CLASS(sched_stat_template,
 282
 283         TP_PROTO(struct task_struct *tsk, u64 delay),
 284
 285         TP_ARGS(tsk, delay),
 286
 287         TP_STRUCT__entry(
 288                 __array( char,  comm,   TASK_COMM_LEN   )
 289                 __field( pid_t, pid                     )
 290                 __field( u64,   delay                   )
 291         ),
 292
 293         TP_fast_assign(
 294                 memcpy(__entry->comm, tsk->comm, TASK_COMM_LEN);
 295                 __entry->pid    = tsk->pid;
 296                 __entry->delay  = delay;
 297         )
 298         TP_perf_assign(
 299                 __perf_count(delay);
 300         ),
 301
 302         TP_printk("comm=%s pid=%d delay=%Lu [ns]",
 303                         __entry->comm, __entry->pid,
 304                         (unsigned long long)__entry->delay)
 305 );
 306
 307
 308 /*
 309  * Tracepoint for accounting wait time (time the task is runnable
 310  * but not actually running due to scheduler contention).
 311  */
 312 DEFINE_EVENT(sched_stat_template, sched_stat_wait,
 313              TP_PROTO(struct task_struct *tsk, u64 delay),
 314              TP_ARGS(tsk, delay));
 315
 316 /*
 317  * Tracepoint for accounting sleep time (time the task is not runnable,
 318  * including iowait, see below).
 319  */
 320 DEFINE_EVENT(sched_stat_template, sched_stat_sleep,
 321              TP_PROTO(struct task_struct *tsk, u64 delay),
 322              TP_ARGS(tsk, delay));
 323
 324 /*
 325  * Tracepoint for accounting iowait time (time the task is not runnable
 326  * due to waiting on IO to complete).
 327  */
 328 DEFINE_EVENT(sched_stat_template, sched_stat_iowait,
 329              TP_PROTO(struct task_struct *tsk, u64 delay),
 330              TP_ARGS(tsk, delay));
 331
 332 /*
 333  * Tracepoint for accounting runtime (time the task is executing
 334  * on a CPU).
 335  */
 336 TRACE_EVENT(sched_stat_runtime,
 337
 338         TP_PROTO(struct task_struct *tsk, u64 runtime, u64 vruntime),
 339
 340         TP_ARGS(tsk, runtime, vruntime),
 341
 342         TP_STRUCT__entry(
 343                 __array( char,  comm,   TASK_COMM_LEN   )
 344                 __field( pid_t, pid                     )
 345                 __field( u64,   runtime                 )
 346                 __field( u64,   vruntime                        )
 347         ),
 348
 349         TP_fast_assign(
 350                 memcpy(__entry->comm, tsk->comm, TASK_COMM_LEN);
 351                 __entry->pid            = tsk->pid;
 352                 __entry->runtime        = runtime;
 353                 __entry->vruntime       = vruntime;
 354         )
 355         TP_perf_assign(
 356                 __perf_count(runtime);
 357         ),
 358
 359         TP_printk("comm=%s pid=%d runtime=%Lu [ns] vruntime=%Lu [ns]",
 360                         __entry->comm, __entry->pid,
 361                         (unsigned long long)__entry->runtime,
 362                         (unsigned long long)__entry->vruntime)
 363 );
 364
 365 /*
 366  * Tracepoint for showing priority inheritance modifying a tasks
 367  * priority.
 368  */
 369 TRACE_EVENT(sched_pi_setprio,
 370
 371         TP_PROTO(struct task_struct *tsk, int newprio),
 372
 373         TP_ARGS(tsk, newprio),
 374
 375         TP_STRUCT__entry(
 376                 __array( char,  comm,   TASK_COMM_LEN   )
 377                 __field( pid_t, pid                     )
 378                 __field( int,   oldprio                 )
 379                 __field( int,   newprio                 )
 380         ),
 381
 382         TP_fast_assign(
 383                 memcpy(__entry->comm, tsk->comm, TASK_COMM_LEN);
 384                 __entry->pid            = tsk->pid;
 385                 __entry->oldprio        = tsk->prio;
 386                 __entry->newprio        = newprio;
 387         ),
 388
 389         TP_printk("comm=%s pid=%d oldprio=%d newprio=%d",
 390                         __entry->comm, __entry->pid,
 391                         __entry->oldprio, __entry->newprio)
 392 );
 393
 394 #endif /* _TRACE_SCHED_H */
 395
 396 /* This part must be outside protection */
 397 #include <trace/define_trace.h>