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 #include <linux/binfmts.h> 10 11 /* 12 * Tracepoint for calling kthread_stop, performed to end a kthread: 13 */ 14 TRACE_EVENT(sched_kthread_stop, 15 16 TP_PROTO(struct task_struct *t), 17 18 TP_ARGS(t), 19 20 TP_STRUCT__entry( 21 __array( char, comm, TASK_COMM_LEN ) 22 __field( pid_t, pid ) 23 ), 24 25 TP_fast_assign( 26 memcpy(__entry->comm, t->comm, TASK_COMM_LEN); 27 __entry->pid = t->pid; 28 ), 29 30 TP_printk("comm=%s pid=%d", __entry->comm, __entry->pid) 31 ); 32 33 /* 34 * Tracepoint for the return value of the kthread stopping: 35 */ 36 TRACE_EVENT(sched_kthread_stop_ret, 37 38 TP_PROTO(int ret), 39 40 TP_ARGS(ret), 41 42 TP_STRUCT__entry( 43 __field( int, ret ) 44 ), 45 46 TP_fast_assign( 47 __entry->ret = ret; 48 ), 49 50 TP_printk("ret=%d", __entry->ret) 51 ); 52 53 /* 54 * Tracepoint for waking up a task: 55 */ 56 DECLARE_EVENT_CLASS(sched_wakeup_template, 57 58 TP_PROTO(struct task_struct *p), 59 60 TP_ARGS(__perf_task(p)), 61 62 TP_STRUCT__entry( 63 __array( char, comm, TASK_COMM_LEN ) 64 __field( pid_t, pid ) 65 __field( int, prio ) 66 __field( int, success ) 67 __field( int, target_cpu ) 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 __entry->success = 1; /* rudiment, kill when possible */ 75 __entry->target_cpu = task_cpu(p); 76 ), 77 78 TP_printk("comm=%s pid=%d prio=%d target_cpu=%03d", 79 __entry->comm, __entry->pid, __entry->prio, 80 __entry->target_cpu) 81 ); 82 83 /* 84 * Tracepoint called when waking a task; this tracepoint is guaranteed to be 85 * called from the waking context. 86 */ 87 DEFINE_EVENT(sched_wakeup_template, sched_waking, 88 TP_PROTO(struct task_struct *p), 89 TP_ARGS(p)); 90 91 /* 92 * Tracepoint called when the task is actually woken; p->state == TASK_RUNNNG. 93 * It it not always called from the waking context. 94 */ 95 DEFINE_EVENT(sched_wakeup_template, sched_wakeup, 96 TP_PROTO(struct task_struct *p), 97 TP_ARGS(p)); 98 99 /* 100 * Tracepoint for waking up a new task: 101 */ 102 DEFINE_EVENT(sched_wakeup_template, sched_wakeup_new, 103 TP_PROTO(struct task_struct *p), 104 TP_ARGS(p)); 105 106 #ifdef CREATE_TRACE_POINTS 107 static inline long __trace_sched_switch_state(struct task_struct *p) 108 { 109 long state = p->state; 110 111 #ifdef CONFIG_PREEMPT 112 #ifdef CONFIG_SCHED_DEBUG 113 BUG_ON(p != current); 114 #endif /* CONFIG_SCHED_DEBUG */ 115 /* 116 * For all intents and purposes a preempted task is a running task. 117 */ 118 if (preempt_count() & PREEMPT_ACTIVE) 119 state = TASK_RUNNING | TASK_STATE_MAX; 120 #endif /* CONFIG_PREEMPT */ 121 122 return state; 123 } 124 #endif /* CREATE_TRACE_POINTS */ 125 126 /* 127 * Tracepoint for task switches, performed by the scheduler: 128 */ 129 TRACE_EVENT(sched_switch, 130 131 TP_PROTO(struct task_struct *prev, 132 struct task_struct *next), 133 134 TP_ARGS(prev, next), 135 136 TP_STRUCT__entry( 137 __array( char, prev_comm, TASK_COMM_LEN ) 138 __field( pid_t, prev_pid ) 139 __field( int, prev_prio ) 140 __field( long, prev_state ) 141 __array( char, next_comm, TASK_COMM_LEN ) 142 __field( pid_t, next_pid ) 143 __field( int, next_prio ) 144 ), 145 146 TP_fast_assign( 147 memcpy(__entry->next_comm, next->comm, TASK_COMM_LEN); 148 __entry->prev_pid = prev->pid; 149 __entry->prev_prio = prev->prio; 150 __entry->prev_state = __trace_sched_switch_state(prev); 151 memcpy(__entry->prev_comm, prev->comm, TASK_COMM_LEN); 152 __entry->next_pid = next->pid; 153 __entry->next_prio = next->prio; 154 ), 155 156 TP_printk("prev_comm=%s prev_pid=%d prev_prio=%d prev_state=%s%s ==> next_comm=%s next_pid=%d next_prio=%d", 157 __entry->prev_comm, __entry->prev_pid, __entry->prev_prio, 158 __entry->prev_state & (TASK_STATE_MAX-1) ? 159 __print_flags(__entry->prev_state & (TASK_STATE_MAX-1), "|", 160 { 1, "S"} , { 2, "D" }, { 4, "T" }, { 8, "t" }, 161 { 16, "Z" }, { 32, "X" }, { 64, "x" }, 162 { 128, "K" }, { 256, "W" }, { 512, "P" }, 163 { 1024, "N" }) : "R", 164 __entry->prev_state & TASK_STATE_MAX ? "+" : "", 165 __entry->next_comm, __entry->next_pid, __entry->next_prio) 166 ); 167 168 /* 169 * Tracepoint for a task being migrated: 170 */ 171 TRACE_EVENT(sched_migrate_task, 172 173 TP_PROTO(struct task_struct *p, int dest_cpu), 174 175 TP_ARGS(p, dest_cpu), 176 177 TP_STRUCT__entry( 178 __array( char, comm, TASK_COMM_LEN ) 179 __field( pid_t, pid ) 180 __field( int, prio ) 181 __field( int, orig_cpu ) 182 __field( int, dest_cpu ) 183 ), 184 185 TP_fast_assign( 186 memcpy(__entry->comm, p->comm, TASK_COMM_LEN); 187 __entry->pid = p->pid; 188 __entry->prio = p->prio; 189 __entry->orig_cpu = task_cpu(p); 190 __entry->dest_cpu = dest_cpu; 191 ), 192 193 TP_printk("comm=%s pid=%d prio=%d orig_cpu=%d dest_cpu=%d", 194 __entry->comm, __entry->pid, __entry->prio, 195 __entry->orig_cpu, __entry->dest_cpu) 196 ); 197 198 DECLARE_EVENT_CLASS(sched_process_template, 199 200 TP_PROTO(struct task_struct *p), 201 202 TP_ARGS(p), 203 204 TP_STRUCT__entry( 205 __array( char, comm, TASK_COMM_LEN ) 206 __field( pid_t, pid ) 207 __field( int, prio ) 208 ), 209 210 TP_fast_assign( 211 memcpy(__entry->comm, p->comm, TASK_COMM_LEN); 212 __entry->pid = p->pid; 213 __entry->prio = p->prio; 214 ), 215 216 TP_printk("comm=%s pid=%d prio=%d", 217 __entry->comm, __entry->pid, __entry->prio) 218 ); 219 220 /* 221 * Tracepoint for freeing a task: 222 */ 223 DEFINE_EVENT(sched_process_template, sched_process_free, 224 TP_PROTO(struct task_struct *p), 225 TP_ARGS(p)); 226 227 228 /* 229 * Tracepoint for a task exiting: 230 */ 231 DEFINE_EVENT(sched_process_template, sched_process_exit, 232 TP_PROTO(struct task_struct *p), 233 TP_ARGS(p)); 234 235 /* 236 * Tracepoint for waiting on task to unschedule: 237 */ 238 DEFINE_EVENT(sched_process_template, sched_wait_task, 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 * Tracepoint for exec: 297 */ 298 TRACE_EVENT(sched_process_exec, 299 300 TP_PROTO(struct task_struct *p, pid_t old_pid, 301 struct linux_binprm *bprm), 302 303 TP_ARGS(p, old_pid, bprm), 304 305 TP_STRUCT__entry( 306 __string( filename, bprm->filename ) 307 __field( pid_t, pid ) 308 __field( pid_t, old_pid ) 309 ), 310 311 TP_fast_assign( 312 __assign_str(filename, bprm->filename); 313 __entry->pid = p->pid; 314 __entry->old_pid = old_pid; 315 ), 316 317 TP_printk("filename=%s pid=%d old_pid=%d", __get_str(filename), 318 __entry->pid, __entry->old_pid) 319 ); 320 321 /* 322 * XXX the below sched_stat tracepoints only apply to SCHED_OTHER/BATCH/IDLE 323 * adding sched_stat support to SCHED_FIFO/RR would be welcome. 324 */ 325 DECLARE_EVENT_CLASS(sched_stat_template, 326 327 TP_PROTO(struct task_struct *tsk, u64 delay), 328 329 TP_ARGS(__perf_task(tsk), __perf_count(delay)), 330 331 TP_STRUCT__entry( 332 __array( char, comm, TASK_COMM_LEN ) 333 __field( pid_t, pid ) 334 __field( u64, delay ) 335 ), 336 337 TP_fast_assign( 338 memcpy(__entry->comm, tsk->comm, TASK_COMM_LEN); 339 __entry->pid = tsk->pid; 340 __entry->delay = delay; 341 ), 342 343 TP_printk("comm=%s pid=%d delay=%Lu [ns]", 344 __entry->comm, __entry->pid, 345 (unsigned long long)__entry->delay) 346 ); 347 348 349 /* 350 * Tracepoint for accounting wait time (time the task is runnable 351 * but not actually running due to scheduler contention). 352 */ 353 DEFINE_EVENT(sched_stat_template, sched_stat_wait, 354 TP_PROTO(struct task_struct *tsk, u64 delay), 355 TP_ARGS(tsk, delay)); 356 357 /* 358 * Tracepoint for accounting sleep time (time the task is not runnable, 359 * including iowait, see below). 360 */ 361 DEFINE_EVENT(sched_stat_template, sched_stat_sleep, 362 TP_PROTO(struct task_struct *tsk, u64 delay), 363 TP_ARGS(tsk, delay)); 364 365 /* 366 * Tracepoint for accounting iowait time (time the task is not runnable 367 * due to waiting on IO to complete). 368 */ 369 DEFINE_EVENT(sched_stat_template, sched_stat_iowait, 370 TP_PROTO(struct task_struct *tsk, u64 delay), 371 TP_ARGS(tsk, delay)); 372 373 /* 374 * Tracepoint for accounting blocked time (time the task is in uninterruptible). 375 */ 376 DEFINE_EVENT(sched_stat_template, sched_stat_blocked, 377 TP_PROTO(struct task_struct *tsk, u64 delay), 378 TP_ARGS(tsk, delay)); 379 380 /* 381 * Tracepoint for accounting runtime (time the task is executing 382 * on a CPU). 383 */ 384 DECLARE_EVENT_CLASS(sched_stat_runtime, 385 386 TP_PROTO(struct task_struct *tsk, u64 runtime, u64 vruntime), 387 388 TP_ARGS(tsk, __perf_count(runtime), vruntime), 389 390 TP_STRUCT__entry( 391 __array( char, comm, TASK_COMM_LEN ) 392 __field( pid_t, pid ) 393 __field( u64, runtime ) 394 __field( u64, vruntime ) 395 ), 396 397 TP_fast_assign( 398 memcpy(__entry->comm, tsk->comm, TASK_COMM_LEN); 399 __entry->pid = tsk->pid; 400 __entry->runtime = runtime; 401 __entry->vruntime = vruntime; 402 ), 403 404 TP_printk("comm=%s pid=%d runtime=%Lu [ns] vruntime=%Lu [ns]", 405 __entry->comm, __entry->pid, 406 (unsigned long long)__entry->runtime, 407 (unsigned long long)__entry->vruntime) 408 ); 409 410 DEFINE_EVENT(sched_stat_runtime, sched_stat_runtime, 411 TP_PROTO(struct task_struct *tsk, u64 runtime, u64 vruntime), 412 TP_ARGS(tsk, runtime, vruntime)); 413 414 /* 415 * Tracepoint for showing priority inheritance modifying a tasks 416 * priority. 417 */ 418 TRACE_EVENT(sched_pi_setprio, 419 420 TP_PROTO(struct task_struct *tsk, int newprio), 421 422 TP_ARGS(tsk, newprio), 423 424 TP_STRUCT__entry( 425 __array( char, comm, TASK_COMM_LEN ) 426 __field( pid_t, pid ) 427 __field( int, oldprio ) 428 __field( int, newprio ) 429 ), 430 431 TP_fast_assign( 432 memcpy(__entry->comm, tsk->comm, TASK_COMM_LEN); 433 __entry->pid = tsk->pid; 434 __entry->oldprio = tsk->prio; 435 __entry->newprio = newprio; 436 ), 437 438 TP_printk("comm=%s pid=%d oldprio=%d newprio=%d", 439 __entry->comm, __entry->pid, 440 __entry->oldprio, __entry->newprio) 441 ); 442 443 #ifdef CONFIG_DETECT_HUNG_TASK 444 TRACE_EVENT(sched_process_hang, 445 TP_PROTO(struct task_struct *tsk), 446 TP_ARGS(tsk), 447 448 TP_STRUCT__entry( 449 __array( char, comm, TASK_COMM_LEN ) 450 __field( pid_t, pid ) 451 ), 452 453 TP_fast_assign( 454 memcpy(__entry->comm, tsk->comm, TASK_COMM_LEN); 455 __entry->pid = tsk->pid; 456 ), 457 458 TP_printk("comm=%s pid=%d", __entry->comm, __entry->pid) 459 ); 460 #endif /* CONFIG_DETECT_HUNG_TASK */ 461 462 DECLARE_EVENT_CLASS(sched_move_task_template, 463 464 TP_PROTO(struct task_struct *tsk, int src_cpu, int dst_cpu), 465 466 TP_ARGS(tsk, src_cpu, dst_cpu), 467 468 TP_STRUCT__entry( 469 __field( pid_t, pid ) 470 __field( pid_t, tgid ) 471 __field( pid_t, ngid ) 472 __field( int, src_cpu ) 473 __field( int, src_nid ) 474 __field( int, dst_cpu ) 475 __field( int, dst_nid ) 476 ), 477 478 TP_fast_assign( 479 __entry->pid = task_pid_nr(tsk); 480 __entry->tgid = task_tgid_nr(tsk); 481 __entry->ngid = task_numa_group_id(tsk); 482 __entry->src_cpu = src_cpu; 483 __entry->src_nid = cpu_to_node(src_cpu); 484 __entry->dst_cpu = dst_cpu; 485 __entry->dst_nid = cpu_to_node(dst_cpu); 486 ), 487 488 TP_printk("pid=%d tgid=%d ngid=%d src_cpu=%d src_nid=%d dst_cpu=%d dst_nid=%d", 489 __entry->pid, __entry->tgid, __entry->ngid, 490 __entry->src_cpu, __entry->src_nid, 491 __entry->dst_cpu, __entry->dst_nid) 492 ); 493 494 /* 495 * Tracks migration of tasks from one runqueue to another. Can be used to 496 * detect if automatic NUMA balancing is bouncing between nodes 497 */ 498 DEFINE_EVENT(sched_move_task_template, sched_move_numa, 499 TP_PROTO(struct task_struct *tsk, int src_cpu, int dst_cpu), 500 501 TP_ARGS(tsk, src_cpu, dst_cpu) 502 ); 503 504 DEFINE_EVENT(sched_move_task_template, sched_stick_numa, 505 TP_PROTO(struct task_struct *tsk, int src_cpu, int dst_cpu), 506 507 TP_ARGS(tsk, src_cpu, dst_cpu) 508 ); 509 510 TRACE_EVENT(sched_swap_numa, 511 512 TP_PROTO(struct task_struct *src_tsk, int src_cpu, 513 struct task_struct *dst_tsk, int dst_cpu), 514 515 TP_ARGS(src_tsk, src_cpu, dst_tsk, dst_cpu), 516 517 TP_STRUCT__entry( 518 __field( pid_t, src_pid ) 519 __field( pid_t, src_tgid ) 520 __field( pid_t, src_ngid ) 521 __field( int, src_cpu ) 522 __field( int, src_nid ) 523 __field( pid_t, dst_pid ) 524 __field( pid_t, dst_tgid ) 525 __field( pid_t, dst_ngid ) 526 __field( int, dst_cpu ) 527 __field( int, dst_nid ) 528 ), 529 530 TP_fast_assign( 531 __entry->src_pid = task_pid_nr(src_tsk); 532 __entry->src_tgid = task_tgid_nr(src_tsk); 533 __entry->src_ngid = task_numa_group_id(src_tsk); 534 __entry->src_cpu = src_cpu; 535 __entry->src_nid = cpu_to_node(src_cpu); 536 __entry->dst_pid = task_pid_nr(dst_tsk); 537 __entry->dst_tgid = task_tgid_nr(dst_tsk); 538 __entry->dst_ngid = task_numa_group_id(dst_tsk); 539 __entry->dst_cpu = dst_cpu; 540 __entry->dst_nid = cpu_to_node(dst_cpu); 541 ), 542 543 TP_printk("src_pid=%d src_tgid=%d src_ngid=%d src_cpu=%d src_nid=%d dst_pid=%d dst_tgid=%d dst_ngid=%d dst_cpu=%d dst_nid=%d", 544 __entry->src_pid, __entry->src_tgid, __entry->src_ngid, 545 __entry->src_cpu, __entry->src_nid, 546 __entry->dst_pid, __entry->dst_tgid, __entry->dst_ngid, 547 __entry->dst_cpu, __entry->dst_nid) 548 ); 549 550 /* 551 * Tracepoint for waking a polling cpu without an IPI. 552 */ 553 TRACE_EVENT(sched_wake_idle_without_ipi, 554 555 TP_PROTO(int cpu), 556 557 TP_ARGS(cpu), 558 559 TP_STRUCT__entry( 560 __field( int, cpu ) 561 ), 562 563 TP_fast_assign( 564 __entry->cpu = cpu; 565 ), 566 567 TP_printk("cpu=%d", __entry->cpu) 568 ); 569 #endif /* _TRACE_SCHED_H */ 570 571 /* This part must be outside protection */ 572 #include <trace/define_trace.h> 573