LXR linux/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 */
  13TRACE_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 */
  35TRACE_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 */
  58TRACE_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 */
  86DECLARE_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
 113DEFINE_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 */
 123DEFINE_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 */
 133TRACE_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 */
 173TRACE_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
 200DECLARE_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 */
 225DEFINE_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 */
 233DEFINE_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 */
 240TRACE_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 */
 265TRACE_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 * XXX the below sched_stat tracepoints only apply to SCHED_OTHER/BATCH/IDLE
 292 *     adding sched_stat support to SCHED_FIFO/RR would be welcome.
 293 */
 294DECLARE_EVENT_CLASS(sched_stat_template,
 295
 296        TP_PROTO(struct task_struct *tsk, u64 delay),
 297
 298        TP_ARGS(tsk, delay),
 299
 300        TP_STRUCT__entry(
 301                __array( char,  comm,   TASK_COMM_LEN   )
 302                __field( pid_t, pid                     )
 303                __field( u64,   delay                   )
 304        ),
 305
 306        TP_fast_assign(
 307                memcpy(__entry->comm, tsk->comm, TASK_COMM_LEN);
 308                __entry->pid    = tsk->pid;
 309                __entry->delay  = delay;
 310        )
 311        TP_perf_assign(
 312                __perf_count(delay);
 313        ),
 314
 315        TP_printk("comm=%s pid=%d delay=%Lu [ns]",
 316                        __entry->comm, __entry->pid,
 317                        (unsigned long long)__entry->delay)
 318);
 319
 320
 321/*
 322 * Tracepoint for accounting wait time (time the task is runnable
 323 * but not actually running due to scheduler contention).
 324 */
 325DEFINE_EVENT(sched_stat_template, sched_stat_wait,
 326             TP_PROTO(struct task_struct *tsk, u64 delay),
 327             TP_ARGS(tsk, delay));
 328
 329/*
 330 * Tracepoint for accounting sleep time (time the task is not runnable,
 331 * including iowait, see below).
 332 */
 333DEFINE_EVENT(sched_stat_template, sched_stat_sleep,
 334             TP_PROTO(struct task_struct *tsk, u64 delay),
 335             TP_ARGS(tsk, delay));
 336
 337/*
 338 * Tracepoint for accounting iowait time (time the task is not runnable
 339 * due to waiting on IO to complete).
 340 */
 341DEFINE_EVENT(sched_stat_template, sched_stat_iowait,
 342             TP_PROTO(struct task_struct *tsk, u64 delay),
 343             TP_ARGS(tsk, delay));
 344
 345/*
 346 * Tracepoint for accounting runtime (time the task is executing
 347 * on a CPU).
 348 */
 349TRACE_EVENT(sched_stat_runtime,
 350
 351        TP_PROTO(struct task_struct *tsk, u64 runtime, u64 vruntime),
 352
 353        TP_ARGS(tsk, runtime, vruntime),
 354
 355        TP_STRUCT__entry(
 356                __array( char,  comm,   TASK_COMM_LEN   )
 357                __field( pid_t, pid                     )
 358                __field( u64,   runtime                 )
 359                __field( u64,   vruntime                        )
 360        ),
 361
 362        TP_fast_assign(
 363                memcpy(__entry->comm, tsk->comm, TASK_COMM_LEN);
 364                __entry->pid            = tsk->pid;
 365                __entry->runtime        = runtime;
 366                __entry->vruntime       = vruntime;
 367        )
 368        TP_perf_assign(
 369                __perf_count(runtime);
 370        ),
 371
 372        TP_printk("comm=%s pid=%d runtime=%Lu [ns] vruntime=%Lu [ns]",
 373                        __entry->comm, __entry->pid,
 374                        (unsigned long long)__entry->runtime,
 375                        (unsigned long long)__entry->vruntime)
 376);
 377
 378#endif /* _TRACE_SCHED_H */
 379
 380/* This part must be outside protection */
 381#include <trace/define_trace.h>
 382