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 | TASK_STATE_MAX;
 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%s ==> next_comm=%s next_pid=%d next_prio=%d",
 141                 __entry->prev_comm, __entry->prev_pid, __entry->prev_prio,
 142                 __entry->prev_state & (TASK_STATE_MAX-1) ?
 143                   __print_flags(__entry->prev_state & (TASK_STATE_MAX-1), "|",
 144                                 { 1, "S"} , { 2, "D" }, { 4, "T" }, { 8, "t" },
 145                                 { 16, "Z" }, { 32, "X" }, { 64, "x" },
 146                                 { 128, "W" }) : "R",
 147                 __entry->prev_state & TASK_STATE_MAX ? "+" : "",
 148                 __entry->next_comm, __entry->next_pid, __entry->next_prio)
 149 );
 150
 151 /*
 152  * Tracepoint for a task being migrated:
 153  */
 154 TRACE_EVENT(sched_migrate_task,
 155
 156         TP_PROTO(struct task_struct *p, int dest_cpu),
 157
 158         TP_ARGS(p, dest_cpu),
 159
 160         TP_STRUCT__entry(
 161                 __array(        char,   comm,   TASK_COMM_LEN   )
 162                 __field(        pid_t,  pid                     )
 163                 __field(        int,    prio                    )
 164                 __field(        int,    orig_cpu                )
 165                 __field(        int,    dest_cpu                )
 166         ),
 167
 168         TP_fast_assign(
 169                 memcpy(__entry->comm, p->comm, TASK_COMM_LEN);
 170                 __entry->pid            = p->pid;
 171                 __entry->prio           = p->prio;
 172                 __entry->orig_cpu       = task_cpu(p);
 173                 __entry->dest_cpu       = dest_cpu;
 174         ),
 175
 176         TP_printk("comm=%s pid=%d prio=%d orig_cpu=%d dest_cpu=%d",
 177                   __entry->comm, __entry->pid, __entry->prio,
 178                   __entry->orig_cpu, __entry->dest_cpu)
 179 );
 180
 181 DECLARE_EVENT_CLASS(sched_process_template,
 182
 183         TP_PROTO(struct task_struct *p),
 184
 185         TP_ARGS(p),
 186
 187         TP_STRUCT__entry(
 188                 __array(        char,   comm,   TASK_COMM_LEN   )
 189                 __field(        pid_t,  pid                     )
 190                 __field(        int,    prio                    )
 191         ),
 192
 193         TP_fast_assign(
 194                 memcpy(__entry->comm, p->comm, TASK_COMM_LEN);
 195                 __entry->pid            = p->pid;
 196                 __entry->prio           = p->prio;
 197         ),
 198
 199         TP_printk("comm=%s pid=%d prio=%d",
 200                   __entry->comm, __entry->pid, __entry->prio)
 201 );
 202
 203 /*
 204  * Tracepoint for freeing a task:
 205  */
 206 DEFINE_EVENT(sched_process_template, sched_process_free,
 207              TP_PROTO(struct task_struct *p),
 208              TP_ARGS(p));
 209
 210
 211 /*
 212  * Tracepoint for a task exiting:
 213  */
 214 DEFINE_EVENT(sched_process_template, sched_process_exit,
 215              TP_PROTO(struct task_struct *p),
 216              TP_ARGS(p));
 217
 218 /*
 219  * Tracepoint for waiting on task to unschedule:
 220  */
 221 DEFINE_EVENT(sched_process_template, sched_wait_task,
 222         TP_PROTO(struct task_struct *p),
 223         TP_ARGS(p));
 224
 225 /*
 226  * Tracepoint for a waiting task:
 227  */
 228 TRACE_EVENT(sched_process_wait,
 229
 230         TP_PROTO(struct pid *pid),
 231
 232         TP_ARGS(pid),
 233
 234         TP_STRUCT__entry(
 235                 __array(        char,   comm,   TASK_COMM_LEN   )
 236                 __field(        pid_t,  pid                     )
 237                 __field(        int,    prio                    )
 238         ),
 239
 240         TP_fast_assign(
 241                 memcpy(__entry->comm, current->comm, TASK_COMM_LEN);
 242                 __entry->pid            = pid_nr(pid);
 243                 __entry->prio           = current->prio;
 244         ),
 245
 246         TP_printk("comm=%s pid=%d prio=%d",
 247                   __entry->comm, __entry->pid, __entry->prio)
 248 );
 249
 250 /*
 251  * Tracepoint for do_fork:
 252  */
 253 TRACE_EVENT(sched_process_fork,
 254
 255         TP_PROTO(struct task_struct *parent, struct task_struct *child),
 256
 257         TP_ARGS(parent, child),
 258
 259         TP_STRUCT__entry(
 260                 __array(        char,   parent_comm,    TASK_COMM_LEN   )
 261                 __field(        pid_t,  parent_pid                      )
 262                 __array(        char,   child_comm,     TASK_COMM_LEN   )
 263                 __field(        pid_t,  child_pid                       )
 264         ),
 265
 266         TP_fast_assign(
 267                 memcpy(__entry->parent_comm, parent->comm, TASK_COMM_LEN);
 268                 __entry->parent_pid     = parent->pid;
 269                 memcpy(__entry->child_comm, child->comm, TASK_COMM_LEN);
 270                 __entry->child_pid      = child->pid;
 271         ),
 272
 273         TP_printk("comm=%s pid=%d child_comm=%s child_pid=%d",
 274                 __entry->parent_comm, __entry->parent_pid,
 275                 __entry->child_comm, __entry->child_pid)
 276 );
 277
 278 /*
 279  * XXX the below sched_stat tracepoints only apply to SCHED_OTHER/BATCH/IDLE
 280  *     adding sched_stat support to SCHED_FIFO/RR would be welcome.
 281  */
 282 DECLARE_EVENT_CLASS(sched_stat_template,
 283
 284         TP_PROTO(struct task_struct *tsk, u64 delay),
 285
 286         TP_ARGS(tsk, delay),
 287
 288         TP_STRUCT__entry(
 289                 __array( char,  comm,   TASK_COMM_LEN   )
 290                 __field( pid_t, pid                     )
 291                 __field( u64,   delay                   )
 292         ),
 293
 294         TP_fast_assign(
 295                 memcpy(__entry->comm, tsk->comm, TASK_COMM_LEN);
 296                 __entry->pid    = tsk->pid;
 297                 __entry->delay  = delay;
 298         )
 299         TP_perf_assign(
 300                 __perf_count(delay);
 301         ),
 302
 303         TP_printk("comm=%s pid=%d delay=%Lu [ns]",
 304                         __entry->comm, __entry->pid,
 305                         (unsigned long long)__entry->delay)
 306 );
 307
 308
 309 /*
 310  * Tracepoint for accounting wait time (time the task is runnable
 311  * but not actually running due to scheduler contention).
 312  */
 313 DEFINE_EVENT(sched_stat_template, sched_stat_wait,
 314              TP_PROTO(struct task_struct *tsk, u64 delay),
 315              TP_ARGS(tsk, delay));
 316
 317 /*
 318  * Tracepoint for accounting sleep time (time the task is not runnable,
 319  * including iowait, see below).
 320  */
 321 DEFINE_EVENT(sched_stat_template, sched_stat_sleep,
 322              TP_PROTO(struct task_struct *tsk, u64 delay),
 323              TP_ARGS(tsk, delay));
 324
 325 /*
 326  * Tracepoint for accounting iowait time (time the task is not runnable
 327  * due to waiting on IO to complete).
 328  */
 329 DEFINE_EVENT(sched_stat_template, sched_stat_iowait,
 330              TP_PROTO(struct task_struct *tsk, u64 delay),
 331              TP_ARGS(tsk, delay));
 332
 333 /*
 334  * Tracepoint for accounting runtime (time the task is executing
 335  * on a CPU).
 336  */
 337 TRACE_EVENT(sched_stat_runtime,
 338
 339         TP_PROTO(struct task_struct *tsk, u64 runtime, u64 vruntime),
 340
 341         TP_ARGS(tsk, runtime, vruntime),
 342
 343         TP_STRUCT__entry(
 344                 __array( char,  comm,   TASK_COMM_LEN   )
 345                 __field( pid_t, pid                     )
 346                 __field( u64,   runtime                 )
 347                 __field( u64,   vruntime                        )
 348         ),
 349
 350         TP_fast_assign(
 351                 memcpy(__entry->comm, tsk->comm, TASK_COMM_LEN);
 352                 __entry->pid            = tsk->pid;
 353                 __entry->runtime        = runtime;
 354                 __entry->vruntime       = vruntime;
 355         )
 356         TP_perf_assign(
 357                 __perf_count(runtime);
 358         ),
 359
 360         TP_printk("comm=%s pid=%d runtime=%Lu [ns] vruntime=%Lu [ns]",
 361                         __entry->comm, __entry->pid,
 362                         (unsigned long long)__entry->runtime,
 363                         (unsigned long long)__entry->vruntime)
 364 );
 365
 366 /*
 367  * Tracepoint for showing priority inheritance modifying a tasks
 368  * priority.
 369  */
 370 TRACE_EVENT(sched_pi_setprio,
 371
 372         TP_PROTO(struct task_struct *tsk, int newprio),
 373
 374         TP_ARGS(tsk, newprio),
 375
 376         TP_STRUCT__entry(
 377                 __array( char,  comm,   TASK_COMM_LEN   )
 378                 __field( pid_t, pid                     )
 379                 __field( int,   oldprio                 )
 380                 __field( int,   newprio                 )
 381         ),
 382
 383         TP_fast_assign(
 384                 memcpy(__entry->comm, tsk->comm, TASK_COMM_LEN);
 385                 __entry->pid            = tsk->pid;
 386                 __entry->oldprio        = tsk->prio;
 387                 __entry->newprio        = newprio;
 388         ),
 389
 390         TP_printk("comm=%s pid=%d oldprio=%d newprio=%d",
 391                         __entry->comm, __entry->pid,
 392                         __entry->oldprio, __entry->newprio)
 393 );
 394
 395 #endif /* _TRACE_SCHED_H */
 396
 397 /* This part must be outside protection */
 398 #include <trace/define_trace.h>