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 /*
 119  * Tracepoint for task switches, performed by the scheduler:
 120  */
 121 TRACE_EVENT(sched_switch,
 122
 123         TP_PROTO(struct task_struct *prev,
 124                  struct task_struct *next),
 125
 126         TP_ARGS(prev, next),
 127
 128         TP_STRUCT__entry(
 129                 __array(        char,   prev_comm,      TASK_COMM_LEN   )
 130                 __field(        pid_t,  prev_pid                        )
 131                 __field(        int,    prev_prio                       )
 132                 __field(        long,   prev_state                      )
 133                 __array(        char,   next_comm,      TASK_COMM_LEN   )
 134                 __field(        pid_t,  next_pid                        )
 135                 __field(        int,    next_prio                       )
 136         ),
 137
 138         TP_fast_assign(
 139                 memcpy(__entry->next_comm, next->comm, TASK_COMM_LEN);
 140                 __entry->prev_pid       = prev->pid;
 141                 __entry->prev_prio      = prev->prio;
 142                 __entry->prev_state     = prev->state;
 143                 memcpy(__entry->prev_comm, prev->comm, TASK_COMM_LEN);
 144                 __entry->next_pid       = next->pid;
 145                 __entry->next_prio      = next->prio;
 146         ),
 147
 148         TP_printk("prev_comm=%s prev_pid=%d prev_prio=%d prev_state=%s ==> next_comm=%s next_pid=%d next_prio=%d",
 149                 __entry->prev_comm, __entry->prev_pid, __entry->prev_prio,
 150                 __entry->prev_state ?
 151                   __print_flags(__entry->prev_state, "|",
 152                                 { 1, "S"} , { 2, "D" }, { 4, "T" }, { 8, "t" },
 153                                 { 16, "Z" }, { 32, "X" }, { 64, "x" },
 154                                 { 128, "W" }) : "R",
 155                 __entry->next_comm, __entry->next_pid, __entry->next_prio)
 156 );
 157
 158 /*
 159  * Tracepoint for a task being migrated:
 160  */
 161 TRACE_EVENT(sched_migrate_task,
 162
 163         TP_PROTO(struct task_struct *p, int dest_cpu),
 164
 165         TP_ARGS(p, dest_cpu),
 166
 167         TP_STRUCT__entry(
 168                 __array(        char,   comm,   TASK_COMM_LEN   )
 169                 __field(        pid_t,  pid                     )
 170                 __field(        int,    prio                    )
 171                 __field(        int,    orig_cpu                )
 172                 __field(        int,    dest_cpu                )
 173         ),
 174
 175         TP_fast_assign(
 176                 memcpy(__entry->comm, p->comm, TASK_COMM_LEN);
 177                 __entry->pid            = p->pid;
 178                 __entry->prio           = p->prio;
 179                 __entry->orig_cpu       = task_cpu(p);
 180                 __entry->dest_cpu       = dest_cpu;
 181         ),
 182
 183         TP_printk("comm=%s pid=%d prio=%d orig_cpu=%d dest_cpu=%d",
 184                   __entry->comm, __entry->pid, __entry->prio,
 185                   __entry->orig_cpu, __entry->dest_cpu)
 186 );
 187
 188 DECLARE_EVENT_CLASS(sched_process_template,
 189
 190         TP_PROTO(struct task_struct *p),
 191
 192         TP_ARGS(p),
 193
 194         TP_STRUCT__entry(
 195                 __array(        char,   comm,   TASK_COMM_LEN   )
 196                 __field(        pid_t,  pid                     )
 197                 __field(        int,    prio                    )
 198         ),
 199
 200         TP_fast_assign(
 201                 memcpy(__entry->comm, p->comm, TASK_COMM_LEN);
 202                 __entry->pid            = p->pid;
 203                 __entry->prio           = p->prio;
 204         ),
 205
 206         TP_printk("comm=%s pid=%d prio=%d",
 207                   __entry->comm, __entry->pid, __entry->prio)
 208 );
 209
 210 /*
 211  * Tracepoint for freeing a task:
 212  */
 213 DEFINE_EVENT(sched_process_template, sched_process_free,
 214              TP_PROTO(struct task_struct *p),
 215              TP_ARGS(p));
 216
 217
 218 /*
 219  * Tracepoint for a task exiting:
 220  */
 221 DEFINE_EVENT(sched_process_template, sched_process_exit,
 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 #endif /* _TRACE_SCHED_H */
 367
 368 /* This part must be outside protection */
 369 #include <trace/define_trace.h>