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