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/numa_balancing.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; /* XXX SCHED_DEADLINE */ 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(bool preempt, struct task_struct *p) 108 { 109 #ifdef CONFIG_SCHED_DEBUG 110 BUG_ON(p != current); 111 #endif /* CONFIG_SCHED_DEBUG */ 112 113 /* 114 * Preemption ignores task state, therefore preempted tasks are always 115 * RUNNING (we will not have dequeued if state != RUNNING). 116 */ 117 if (preempt) 118 return TASK_STATE_MAX; 119 120 return __get_task_state(p); 121 } 122 #endif /* CREATE_TRACE_POINTS */ 123 124 /* 125 * Tracepoint for task switches, performed by the scheduler: 126 */ 127 TRACE_EVENT(sched_switch, 128 129 TP_PROTO(bool preempt, 130 struct task_struct *prev, 131 struct task_struct *next), 132 133 TP_ARGS(preempt, prev, next), 134 135 TP_STRUCT__entry( 136 __array( char, prev_comm, TASK_COMM_LEN ) 137 __field( pid_t, prev_pid ) 138 __field( int, prev_prio ) 139 __field( long, prev_state ) 140 __array( char, next_comm, TASK_COMM_LEN ) 141 __field( pid_t, next_pid ) 142 __field( int, next_prio ) 143 ), 144 145 TP_fast_assign( 146 memcpy(__entry->next_comm, next->comm, TASK_COMM_LEN); 147 __entry->prev_pid = prev->pid; 148 __entry->prev_prio = prev->prio; 149 __entry->prev_state = __trace_sched_switch_state(preempt, prev); 150 memcpy(__entry->prev_comm, prev->comm, TASK_COMM_LEN); 151 __entry->next_pid = next->pid; 152 __entry->next_prio = next->prio; 153 /* XXX SCHED_DEADLINE */ 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, 158 159 (__entry->prev_state & (TASK_REPORT_MAX - 1)) ? 160 __print_flags(__entry->prev_state & (TASK_REPORT_MAX - 1), "|", 161 { 0x01, "S" }, { 0x02, "D" }, { 0x04, "T" }, 162 { 0x08, "t" }, { 0x10, "X" }, { 0x20, "Z" }, 163 { 0x40, "P" }, { 0x80, "I" }) : 164 "R", 165 166 __entry->prev_state & TASK_STATE_MAX ? "+" : "", 167 __entry->next_comm, __entry->next_pid, __entry->next_prio) 168 ); 169 170 /* 171 * Tracepoint for a task being migrated: 172 */ 173 TRACE_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; /* XXX SCHED_DEADLINE */ 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 ); 199 200 DECLARE_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; /* XXX SCHED_DEADLINE */ 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 */ 225 DEFINE_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 */ 233 DEFINE_EVENT(sched_process_template, sched_process_exit, 234 TP_PROTO(struct task_struct *p), 235 TP_ARGS(p)); 236 237 /* 238 * Tracepoint for waiting on task to unschedule: 239 */ 240 DEFINE_EVENT(sched_process_template, sched_wait_task, 241 TP_PROTO(struct task_struct *p), 242 TP_ARGS(p)); 243 244 /* 245 * Tracepoint for a waiting task: 246 */ 247 TRACE_EVENT(sched_process_wait, 248 249 TP_PROTO(struct pid *pid), 250 251 TP_ARGS(pid), 252 253 TP_STRUCT__entry( 254 __array( char, comm, TASK_COMM_LEN ) 255 __field( pid_t, pid ) 256 __field( int, prio ) 257 ), 258 259 TP_fast_assign( 260 memcpy(__entry->comm, current->comm, TASK_COMM_LEN); 261 __entry->pid = pid_nr(pid); 262 __entry->prio = current->prio; /* XXX SCHED_DEADLINE */ 263 ), 264 265 TP_printk("comm=%s pid=%d prio=%d", 266 __entry->comm, __entry->pid, __entry->prio) 267 ); 268 269 /* 270 * Tracepoint for do_fork: 271 */ 272 TRACE_EVENT(sched_process_fork, 273 274 TP_PROTO(struct task_struct *parent, struct task_struct *child), 275 276 TP_ARGS(parent, child), 277 278 TP_STRUCT__entry( 279 __array( char, parent_comm, TASK_COMM_LEN ) 280 __field( pid_t, parent_pid ) 281 __array( char, child_comm, TASK_COMM_LEN ) 282 __field( pid_t, child_pid ) 283 ), 284 285 TP_fast_assign( 286 memcpy(__entry->parent_comm, parent->comm, TASK_COMM_LEN); 287 __entry->parent_pid = parent->pid; 288 memcpy(__entry->child_comm, child->comm, TASK_COMM_LEN); 289 __entry->child_pid = child->pid; 290 ), 291 292 TP_printk("comm=%s pid=%d child_comm=%s child_pid=%d", 293 __entry->parent_comm, __entry->parent_pid, 294 __entry->child_comm, __entry->child_pid) 295 ); 296 297 /* 298 * Tracepoint for exec: 299 */ 300 TRACE_EVENT(sched_process_exec, 301 302 TP_PROTO(struct task_struct *p, pid_t old_pid, 303 struct linux_binprm *bprm), 304 305 TP_ARGS(p, old_pid, bprm), 306 307 TP_STRUCT__entry( 308 __string( filename, bprm->filename ) 309 __field( pid_t, pid ) 310 __field( pid_t, old_pid ) 311 ), 312 313 TP_fast_assign( 314 __assign_str(filename, bprm->filename); 315 __entry->pid = p->pid; 316 __entry->old_pid = old_pid; 317 ), 318 319 TP_printk("filename=%s pid=%d old_pid=%d", __get_str(filename), 320 __entry->pid, __entry->old_pid) 321 ); 322 323 /* 324 * XXX the below sched_stat tracepoints only apply to SCHED_OTHER/BATCH/IDLE 325 * adding sched_stat support to SCHED_FIFO/RR would be welcome. 326 */ 327 DECLARE_EVENT_CLASS(sched_stat_template, 328 329 TP_PROTO(struct task_struct *tsk, u64 delay), 330 331 TP_ARGS(__perf_task(tsk), __perf_count(delay)), 332 333 TP_STRUCT__entry( 334 __array( char, comm, TASK_COMM_LEN ) 335 __field( pid_t, pid ) 336 __field( u64, delay ) 337 ), 338 339 TP_fast_assign( 340 memcpy(__entry->comm, tsk->comm, TASK_COMM_LEN); 341 __entry->pid = tsk->pid; 342 __entry->delay = delay; 343 ), 344 345 TP_printk("comm=%s pid=%d delay=%Lu [ns]", 346 __entry->comm, __entry->pid, 347 (unsigned long long)__entry->delay) 348 ); 349 350 351 /* 352 * Tracepoint for accounting wait time (time the task is runnable 353 * but not actually running due to scheduler contention). 354 */ 355 DEFINE_EVENT(sched_stat_template, sched_stat_wait, 356 TP_PROTO(struct task_struct *tsk, u64 delay), 357 TP_ARGS(tsk, delay)); 358 359 /* 360 * Tracepoint for accounting sleep time (time the task is not runnable, 361 * including iowait, see below). 362 */ 363 DEFINE_EVENT(sched_stat_template, sched_stat_sleep, 364 TP_PROTO(struct task_struct *tsk, u64 delay), 365 TP_ARGS(tsk, delay)); 366 367 /* 368 * Tracepoint for accounting iowait time (time the task is not runnable 369 * due to waiting on IO to complete). 370 */ 371 DEFINE_EVENT(sched_stat_template, sched_stat_iowait, 372 TP_PROTO(struct task_struct *tsk, u64 delay), 373 TP_ARGS(tsk, delay)); 374 375 /* 376 * Tracepoint for accounting blocked time (time the task is in uninterruptible). 377 */ 378 DEFINE_EVENT(sched_stat_template, sched_stat_blocked, 379 TP_PROTO(struct task_struct *tsk, u64 delay), 380 TP_ARGS(tsk, delay)); 381 382 /* 383 * Tracepoint for accounting runtime (time the task is executing 384 * on a CPU). 385 */ 386 DECLARE_EVENT_CLASS(sched_stat_runtime, 387 388 TP_PROTO(struct task_struct *tsk, u64 runtime, u64 vruntime), 389 390 TP_ARGS(tsk, __perf_count(runtime), vruntime), 391 392 TP_STRUCT__entry( 393 __array( char, comm, TASK_COMM_LEN ) 394 __field( pid_t, pid ) 395 __field( u64, runtime ) 396 __field( u64, vruntime ) 397 ), 398 399 TP_fast_assign( 400 memcpy(__entry->comm, tsk->comm, TASK_COMM_LEN); 401 __entry->pid = tsk->pid; 402 __entry->runtime = runtime; 403 __entry->vruntime = vruntime; 404 ), 405 406 TP_printk("comm=%s pid=%d runtime=%Lu [ns] vruntime=%Lu [ns]", 407 __entry->comm, __entry->pid, 408 (unsigned long long)__entry->runtime, 409 (unsigned long long)__entry->vruntime) 410 ); 411 412 DEFINE_EVENT(sched_stat_runtime, sched_stat_runtime, 413 TP_PROTO(struct task_struct *tsk, u64 runtime, u64 vruntime), 414 TP_ARGS(tsk, runtime, vruntime)); 415 416 /* 417 * Tracepoint for showing priority inheritance modifying a tasks 418 * priority. 419 */ 420 TRACE_EVENT(sched_pi_setprio, 421 422 TP_PROTO(struct task_struct *tsk, struct task_struct *pi_task), 423 424 TP_ARGS(tsk, pi_task), 425 426 TP_STRUCT__entry( 427 __array( char, comm, TASK_COMM_LEN ) 428 __field( pid_t, pid ) 429 __field( int, oldprio ) 430 __field( int, newprio ) 431 ), 432 433 TP_fast_assign( 434 memcpy(__entry->comm, tsk->comm, TASK_COMM_LEN); 435 __entry->pid = tsk->pid; 436 __entry->oldprio = tsk->prio; 437 __entry->newprio = pi_task ? pi_task->prio : tsk->prio; 438 /* XXX SCHED_DEADLINE bits missing */ 439 ), 440 441 TP_printk("comm=%s pid=%d oldprio=%d newprio=%d", 442 __entry->comm, __entry->pid, 443 __entry->oldprio, __entry->newprio) 444 ); 445 446 #ifdef CONFIG_DETECT_HUNG_TASK 447 TRACE_EVENT(sched_process_hang, 448 TP_PROTO(struct task_struct *tsk), 449 TP_ARGS(tsk), 450 451 TP_STRUCT__entry( 452 __array( char, comm, TASK_COMM_LEN ) 453 __field( pid_t, pid ) 454 ), 455 456 TP_fast_assign( 457 memcpy(__entry->comm, tsk->comm, TASK_COMM_LEN); 458 __entry->pid = tsk->pid; 459 ), 460 461 TP_printk("comm=%s pid=%d", __entry->comm, __entry->pid) 462 ); 463 #endif /* CONFIG_DETECT_HUNG_TASK */ 464 465 DECLARE_EVENT_CLASS(sched_move_task_template, 466 467 TP_PROTO(struct task_struct *tsk, int src_cpu, int dst_cpu), 468 469 TP_ARGS(tsk, src_cpu, dst_cpu), 470 471 TP_STRUCT__entry( 472 __field( pid_t, pid ) 473 __field( pid_t, tgid ) 474 __field( pid_t, ngid ) 475 __field( int, src_cpu ) 476 __field( int, src_nid ) 477 __field( int, dst_cpu ) 478 __field( int, dst_nid ) 479 ), 480 481 TP_fast_assign( 482 __entry->pid = task_pid_nr(tsk); 483 __entry->tgid = task_tgid_nr(tsk); 484 __entry->ngid = task_numa_group_id(tsk); 485 __entry->src_cpu = src_cpu; 486 __entry->src_nid = cpu_to_node(src_cpu); 487 __entry->dst_cpu = dst_cpu; 488 __entry->dst_nid = cpu_to_node(dst_cpu); 489 ), 490 491 TP_printk("pid=%d tgid=%d ngid=%d src_cpu=%d src_nid=%d dst_cpu=%d dst_nid=%d", 492 __entry->pid, __entry->tgid, __entry->ngid, 493 __entry->src_cpu, __entry->src_nid, 494 __entry->dst_cpu, __entry->dst_nid) 495 ); 496 497 /* 498 * Tracks migration of tasks from one runqueue to another. Can be used to 499 * detect if automatic NUMA balancing is bouncing between nodes 500 */ 501 DEFINE_EVENT(sched_move_task_template, sched_move_numa, 502 TP_PROTO(struct task_struct *tsk, int src_cpu, int dst_cpu), 503 504 TP_ARGS(tsk, src_cpu, dst_cpu) 505 ); 506 507 DEFINE_EVENT(sched_move_task_template, sched_stick_numa, 508 TP_PROTO(struct task_struct *tsk, int src_cpu, int dst_cpu), 509 510 TP_ARGS(tsk, src_cpu, dst_cpu) 511 ); 512 513 TRACE_EVENT(sched_swap_numa, 514 515 TP_PROTO(struct task_struct *src_tsk, int src_cpu, 516 struct task_struct *dst_tsk, int dst_cpu), 517 518 TP_ARGS(src_tsk, src_cpu, dst_tsk, dst_cpu), 519 520 TP_STRUCT__entry( 521 __field( pid_t, src_pid ) 522 __field( pid_t, src_tgid ) 523 __field( pid_t, src_ngid ) 524 __field( int, src_cpu ) 525 __field( int, src_nid ) 526 __field( pid_t, dst_pid ) 527 __field( pid_t, dst_tgid ) 528 __field( pid_t, dst_ngid ) 529 __field( int, dst_cpu ) 530 __field( int, dst_nid ) 531 ), 532 533 TP_fast_assign( 534 __entry->src_pid = task_pid_nr(src_tsk); 535 __entry->src_tgid = task_tgid_nr(src_tsk); 536 __entry->src_ngid = task_numa_group_id(src_tsk); 537 __entry->src_cpu = src_cpu; 538 __entry->src_nid = cpu_to_node(src_cpu); 539 __entry->dst_pid = task_pid_nr(dst_tsk); 540 __entry->dst_tgid = task_tgid_nr(dst_tsk); 541 __entry->dst_ngid = task_numa_group_id(dst_tsk); 542 __entry->dst_cpu = dst_cpu; 543 __entry->dst_nid = cpu_to_node(dst_cpu); 544 ), 545 546 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", 547 __entry->src_pid, __entry->src_tgid, __entry->src_ngid, 548 __entry->src_cpu, __entry->src_nid, 549 __entry->dst_pid, __entry->dst_tgid, __entry->dst_ngid, 550 __entry->dst_cpu, __entry->dst_nid) 551 ); 552 553 /* 554 * Tracepoint for waking a polling cpu without an IPI. 555 */ 556 TRACE_EVENT(sched_wake_idle_without_ipi, 557 558 TP_PROTO(int cpu), 559 560 TP_ARGS(cpu), 561 562 TP_STRUCT__entry( 563 __field( int, cpu ) 564 ), 565 566 TP_fast_assign( 567 __entry->cpu = cpu; 568 ), 569 570 TP_printk("cpu=%d", __entry->cpu) 571 ); 572 #endif /* _TRACE_SCHED_H */ 573 574 /* This part must be outside protection */ 575 #include <trace/define_trace.h> 576