instrumentation/events/lttng-module/sched.h

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2 #undef TRACE_SYSTEM
   3 #define TRACE_SYSTEM sched
   4
   5 #if !defined(LTTNG_TRACE_SCHED_H) || defined(TRACE_HEADER_MULTI_READ)
   6 #define LTTNG_TRACE_SCHED_H
   7
   8 #include <probes/lttng-tracepoint-event.h>
   9 #include <linux/sched.h>
  10 #include <linux/pid_namespace.h>
  11 #include <linux/binfmts.h>
  12 #include <linux/version.h>
  13 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,9,0))
  14 #include <linux/sched/rt.h>
  15 #endif
  16
  17 #define LTTNG_MAX_PID_NS_LEVEL 32
  18
  19 #ifndef _TRACE_SCHED_DEF_
  20 #define _TRACE_SCHED_DEF_
  21
  22 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,15,0))
  23
  24 static inline long __trace_sched_switch_state(bool preempt, struct task_struct *p)
  25 {
  26         unsigned int state;
  27
  28 #ifdef CONFIG_SCHED_DEBUG
  29         BUG_ON(p != current);
  30 #endif /* CONFIG_SCHED_DEBUG */
  31
  32         /*
  33          * Preemption ignores task state, therefore preempted tasks are always
  34          * RUNNING (we will not have dequeued if state != RUNNING).
  35          */
  36         if (preempt)
  37                 return TASK_REPORT_MAX;
  38
  39         /*
  40          * task_state_index() uses fls() and returns a value from 0-8 range.
  41          * Decrement it by 1 (except TASK_RUNNING state i.e 0) before using
  42          * it for left shift operation to get the correct task->state
  43          * mapping.
  44          */
  45         state = task_state_index(p);
  46
  47         return state ? (1 << (state - 1)) : state;
  48 }
  49
  50 #elif (LINUX_VERSION_CODE >= KERNEL_VERSION(4,14,0))
  51
  52 static inline long __trace_sched_switch_state(bool preempt, struct task_struct *p)
  53 {
  54         unsigned int state;
  55
  56 #ifdef CONFIG_SCHED_DEBUG
  57         BUG_ON(p != current);
  58 #endif /* CONFIG_SCHED_DEBUG */
  59
  60         /*
  61          * Preemption ignores task state, therefore preempted tasks are always
  62          * RUNNING (we will not have dequeued if state != RUNNING).
  63          */
  64         if (preempt)
  65                 return TASK_REPORT_MAX;
  66
  67         /*
  68          * __get_task_state() uses fls() and returns a value from 0-8 range.
  69          * Decrement it by 1 (except TASK_RUNNING state i.e 0) before using
  70          * it for left shift operation to get the correct task->state
  71          * mapping.
  72          */
  73         state = __get_task_state(p);
  74
  75         return state ? (1 << (state - 1)) : state;
  76 }
  77
  78 #elif (LINUX_VERSION_CODE >= KERNEL_VERSION(4,4,0))
  79
  80 static inline long __trace_sched_switch_state(bool preempt, struct task_struct *p)
  81 {
  82 #ifdef CONFIG_SCHED_DEBUG
  83         BUG_ON(p != current);
  84 #endif /* CONFIG_SCHED_DEBUG */
  85         /*
  86          * Preemption ignores task state, therefore preempted tasks are always RUNNING
  87          * (we will not have dequeued if state != RUNNING).
  88          */
  89         return preempt ? TASK_RUNNING | TASK_STATE_MAX : p->state;
  90 }
  91
  92 #elif (LINUX_VERSION_CODE >= KERNEL_VERSION(3,19,0))
  93
  94 static inline long __trace_sched_switch_state(struct task_struct *p)
  95 {
  96         long state = p->state;
  97
  98 #ifdef CONFIG_PREEMPT
  99 #ifdef CONFIG_SCHED_DEBUG
 100         BUG_ON(p != current);
 101 #endif /* CONFIG_SCHED_DEBUG */
 102         /*
 103          * For all intents and purposes a preempted task is a running task.
 104          */
 105         if (preempt_count() & PREEMPT_ACTIVE)
 106                 state = TASK_RUNNING | TASK_STATE_MAX;
 107 #endif  /* CONFIG_PREEMPT */
 108
 109         return state;
 110 }
 111
 112 #elif (LINUX_VERSION_CODE >= KERNEL_VERSION(3,13,0))
 113
 114 static inline long __trace_sched_switch_state(struct task_struct *p)
 115 {
 116         long state = p->state;
 117
 118 #ifdef CONFIG_PREEMPT
 119         /*
 120          * For all intents and purposes a preempted task is a running task.
 121          */
 122         if (task_preempt_count(p) & PREEMPT_ACTIVE)
 123                 state = TASK_RUNNING | TASK_STATE_MAX;
 124 #endif
 125
 126         return state;
 127 }
 128
 129 #elif (LINUX_VERSION_CODE >= KERNEL_VERSION(3,2,0))
 130
 131 static inline long __trace_sched_switch_state(struct task_struct *p)
 132 {
 133         long state = p->state;
 134
 135 #ifdef CONFIG_PREEMPT
 136         /*
 137          * For all intents and purposes a preempted task is a running task.
 138          */
 139         if (task_thread_info(p)->preempt_count & PREEMPT_ACTIVE)
 140                 state = TASK_RUNNING | TASK_STATE_MAX;
 141 #endif
 142
 143         return state;
 144 }
 145
 146 #else
 147
 148 static inline long __trace_sched_switch_state(struct task_struct *p)
 149 {
 150         long state = p->state;
 151
 152 #ifdef CONFIG_PREEMPT
 153         /*
 154          * For all intents and purposes a preempted task is a running task.
 155          */
 156         if (task_thread_info(p)->preempt_count & PREEMPT_ACTIVE)
 157                 state = TASK_RUNNING;
 158 #endif
 159
 160         return state;
 161 }
 162
 163 #endif
 164
 165 #endif /* _TRACE_SCHED_DEF_ */
 166
 167 /*
 168  * Enumeration of the task state bitmask.
 169  * Only bit flags are enumerated here, not composition of states.
 170  */
 171 LTTNG_TRACEPOINT_ENUM(task_state,
 172         TP_ENUM_VALUES(
 173                 ctf_enum_value("TASK_RUNNING", TASK_RUNNING)
 174                 ctf_enum_value("TASK_INTERRUPTIBLE", TASK_INTERRUPTIBLE)
 175                 ctf_enum_value("TASK_UNINTERRUPTIBLE", TASK_UNINTERRUPTIBLE)
 176                 ctf_enum_value("TASK_STOPPED", __TASK_STOPPED)
 177                 ctf_enum_value("TASK_TRACED", __TASK_TRACED)
 178                 ctf_enum_value("EXIT_DEAD", EXIT_DEAD)
 179                 ctf_enum_value("EXIT_ZOMBIE", EXIT_ZOMBIE)
 180
 181 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,9,0))
 182                 ctf_enum_value("TASK_PARKED", TASK_PARKED)
 183 #endif /* #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,9,0)) */
 184
 185                 ctf_enum_value("TASK_DEAD", TASK_DEAD)
 186                 ctf_enum_value("TASK_WAKEKILL", TASK_WAKEKILL)
 187                 ctf_enum_value("TASK_WAKING", TASK_WAKING)
 188
 189 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,2,0))
 190                 ctf_enum_value("TASK_NOLOAD", TASK_NOLOAD)
 191 #endif /* #if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,2,0)) */
 192
 193 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,8,0))
 194                 ctf_enum_value("TASK_NEW", TASK_NEW)
 195 #endif /* #if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,8,0)) */
 196
 197                 ctf_enum_value("TASK_STATE_MAX", TASK_STATE_MAX)
 198         )
 199 )
 200
 201 /*
 202  * Tracepoint for calling kthread_stop, performed to end a kthread:
 203  */
 204 LTTNG_TRACEPOINT_EVENT(sched_kthread_stop,
 205
 206         TP_PROTO(struct task_struct *t),
 207
 208         TP_ARGS(t),
 209
 210         TP_FIELDS(
 211                 ctf_array_text(char, comm, t->comm, TASK_COMM_LEN)
 212                 ctf_integer(pid_t, tid, t->pid)
 213         )
 214 )
 215
 216 /*
 217  * Tracepoint for the return value of the kthread stopping:
 218  */
 219 LTTNG_TRACEPOINT_EVENT(sched_kthread_stop_ret,
 220
 221         TP_PROTO(int ret),
 222
 223         TP_ARGS(ret),
 224
 225         TP_FIELDS(
 226                 ctf_integer(int, ret, ret)
 227         )
 228 )
 229
 230 /*
 231  * Tracepoint for waking up a task:
 232  */
 233 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,3,0) || \
 234         LTTNG_RT_KERNEL_RANGE(4,1,10,11, 4,2,0,0) || \
 235         LTTNG_RT_KERNEL_RANGE(3,18,27,26, 3,19,0,0) || \
 236         LTTNG_RT_KERNEL_RANGE(3,14,61,63, 3,15,0,0) || \
 237         LTTNG_RT_KERNEL_RANGE(3,12,54,73, 3,13,0,0) || \
 238         LTTNG_RT_KERNEL_RANGE(3,10,97,106, 3,11,0,0) || \
 239         LTTNG_RT_KERNEL_RANGE(3,4,110,139, 3,5,0,0) || \
 240         LTTNG_RT_KERNEL_RANGE(3,2,77,111, 3,3,0,0))
 241 LTTNG_TRACEPOINT_EVENT_CLASS(sched_wakeup_template,
 242
 243         TP_PROTO(struct task_struct *p),
 244
 245         TP_ARGS(p),
 246
 247         TP_FIELDS(
 248                 ctf_array_text(char, comm, p->comm, TASK_COMM_LEN)
 249                 ctf_integer(pid_t, tid, p->pid)
 250                 ctf_integer(int, prio, p->prio - MAX_RT_PRIO)
 251                 ctf_integer(int, target_cpu, task_cpu(p))
 252         )
 253 )
 254 #else /* #if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,3,0)) */
 255 LTTNG_TRACEPOINT_EVENT_CLASS(sched_wakeup_template,
 256
 257         TP_PROTO(struct task_struct *p, int success),
 258
 259         TP_ARGS(p, success),
 260
 261         TP_FIELDS(
 262                 ctf_array_text(char, comm, p->comm, TASK_COMM_LEN)
 263                 ctf_integer(pid_t, tid, p->pid)
 264                 ctf_integer(int, prio, p->prio - MAX_RT_PRIO)
 265                 ctf_integer(int, success, success)
 266                 ctf_integer(int, target_cpu, task_cpu(p))
 267         )
 268 )
 269 #endif /* #else #if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,3,0)) */
 270
 271 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,3,0) || \
 272         LTTNG_RT_KERNEL_RANGE(4,1,10,11, 4,2,0,0) || \
 273         LTTNG_RT_KERNEL_RANGE(3,18,27,26, 3,19,0,0) || \
 274         LTTNG_RT_KERNEL_RANGE(3,14,61,63, 3,15,0,0) || \
 275         LTTNG_RT_KERNEL_RANGE(3,12,54,73, 3,13,0,0) || \
 276         LTTNG_RT_KERNEL_RANGE(3,10,97,106, 3,11,0,0) || \
 277         LTTNG_RT_KERNEL_RANGE(3,4,110,139, 3,5,0,0) || \
 278         LTTNG_RT_KERNEL_RANGE(3,2,77,111, 3,3,0,0))
 279
 280 /*
 281  * Tracepoint called when waking a task; this tracepoint is guaranteed to be
 282  * called from the waking context.
 283  */
 284 LTTNG_TRACEPOINT_EVENT_INSTANCE(sched_wakeup_template, sched_waking,
 285              TP_PROTO(struct task_struct *p),
 286              TP_ARGS(p))
 287
 288 /*
 289  * Tracepoint called when the task is actually woken; p->state == TASK_RUNNNG.
 290  * It it not always called from the waking context.
 291  */
 292 LTTNG_TRACEPOINT_EVENT_INSTANCE(sched_wakeup_template, sched_wakeup,
 293              TP_PROTO(struct task_struct *p),
 294              TP_ARGS(p))
 295
 296 /*
 297  * Tracepoint for waking up a new task:
 298  */
 299 LTTNG_TRACEPOINT_EVENT_INSTANCE(sched_wakeup_template, sched_wakeup_new,
 300              TP_PROTO(struct task_struct *p),
 301              TP_ARGS(p))
 302
 303 #else
 304
 305 LTTNG_TRACEPOINT_EVENT_INSTANCE(sched_wakeup_template, sched_wakeup,
 306              TP_PROTO(struct task_struct *p, int success),
 307              TP_ARGS(p, success))
 308
 309 /*
 310  * Tracepoint for waking up a new task:
 311  */
 312 LTTNG_TRACEPOINT_EVENT_INSTANCE(sched_wakeup_template, sched_wakeup_new,
 313              TP_PROTO(struct task_struct *p, int success),
 314              TP_ARGS(p, success))
 315
 316 #endif /* #if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,3,0)) */
 317
 318 /*
 319  * Tracepoint for task switches, performed by the scheduler:
 320  */
 321 LTTNG_TRACEPOINT_EVENT(sched_switch,
 322
 323 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,4,0))
 324         TP_PROTO(bool preempt,
 325                  struct task_struct *prev,
 326                  struct task_struct *next),
 327
 328         TP_ARGS(preempt, prev, next),
 329 #else
 330         TP_PROTO(struct task_struct *prev,
 331                  struct task_struct *next),
 332
 333         TP_ARGS(prev, next),
 334 #endif /* #if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,4,0)) */
 335
 336         TP_FIELDS(
 337                 ctf_array_text(char, prev_comm, prev->comm, TASK_COMM_LEN)
 338                 ctf_integer(pid_t, prev_tid, prev->pid)
 339                 ctf_integer(int, prev_prio, prev->prio - MAX_RT_PRIO)
 340 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,4,0))
 341                 ctf_enum(task_state, long, prev_state, __trace_sched_switch_state(preempt, prev))
 342 #else
 343                 ctf_enum(task_state, long, prev_state, __trace_sched_switch_state(prev))
 344 #endif
 345                 ctf_array_text(char, next_comm, next->comm, TASK_COMM_LEN)
 346                 ctf_integer(pid_t, next_tid, next->pid)
 347                 ctf_integer(int, next_prio, next->prio - MAX_RT_PRIO)
 348         )
 349 )
 350
 351 /*
 352  * Tracepoint for a task being migrated:
 353  */
 354 LTTNG_TRACEPOINT_EVENT(sched_migrate_task,
 355
 356         TP_PROTO(struct task_struct *p, int dest_cpu),
 357
 358         TP_ARGS(p, dest_cpu),
 359
 360         TP_FIELDS(
 361                 ctf_array_text(char, comm, p->comm, TASK_COMM_LEN)
 362                 ctf_integer(pid_t, tid, p->pid)
 363                 ctf_integer(int, prio, p->prio - MAX_RT_PRIO)
 364                 ctf_integer(int, orig_cpu, task_cpu(p))
 365                 ctf_integer(int, dest_cpu, dest_cpu)
 366         )
 367 )
 368
 369 LTTNG_TRACEPOINT_EVENT_CLASS(sched_process_template,
 370
 371         TP_PROTO(struct task_struct *p),
 372
 373         TP_ARGS(p),
 374
 375         TP_FIELDS(
 376                 ctf_array_text(char, comm, p->comm, TASK_COMM_LEN)
 377                 ctf_integer(pid_t, tid, p->pid)
 378                 ctf_integer(int, prio, p->prio - MAX_RT_PRIO)
 379         )
 380 )
 381
 382 /*
 383  * Tracepoint for freeing a task:
 384  */
 385 LTTNG_TRACEPOINT_EVENT_INSTANCE(sched_process_template, sched_process_free,
 386              TP_PROTO(struct task_struct *p),
 387              TP_ARGS(p))
 388
 389
 390 /*
 391  * Tracepoint for a task exiting:
 392  */
 393 LTTNG_TRACEPOINT_EVENT_INSTANCE(sched_process_template, sched_process_exit,
 394              TP_PROTO(struct task_struct *p),
 395              TP_ARGS(p))
 396
 397 /*
 398  * Tracepoint for waiting on task to unschedule:
 399  */
 400 LTTNG_TRACEPOINT_EVENT_INSTANCE(sched_process_template, sched_wait_task,
 401         TP_PROTO(struct task_struct *p),
 402         TP_ARGS(p))
 403
 404 /*
 405  * Tracepoint for a waiting task:
 406  */
 407 LTTNG_TRACEPOINT_EVENT(sched_process_wait,
 408
 409         TP_PROTO(struct pid *pid),
 410
 411         TP_ARGS(pid),
 412
 413         TP_FIELDS(
 414                 ctf_array_text(char, comm, current->comm, TASK_COMM_LEN)
 415                 ctf_integer(pid_t, tid, pid_nr(pid))
 416                 ctf_integer(int, prio, current->prio - MAX_RT_PRIO)
 417         )
 418 )
 419
 420 /*
 421  * Tracepoint for do_fork.
 422  * Saving both TID and PID information, especially for the child, allows
 423  * trace analyzers to distinguish between creation of a new process and
 424  * creation of a new thread. Newly created processes will have child_tid
 425  * == child_pid, while creation of a thread yields to child_tid !=
 426  * child_pid.
 427  */
 428 LTTNG_TRACEPOINT_EVENT_CODE(sched_process_fork,
 429
 430         TP_PROTO(struct task_struct *parent, struct task_struct *child),
 431
 432         TP_ARGS(parent, child),
 433
 434         TP_locvar(
 435                 pid_t vtids[LTTNG_MAX_PID_NS_LEVEL];
 436                 unsigned int ns_level;
 437         ),
 438
 439         TP_code_pre(
 440                 if (child) {
 441                         struct pid *child_pid;
 442                         unsigned int i;
 443
 444                         child_pid = task_pid(child);
 445                         tp_locvar->ns_level =
 446                                 min_t(unsigned int, child_pid->level + 1,
 447                                         LTTNG_MAX_PID_NS_LEVEL);
 448                         for (i = 0; i < tp_locvar->ns_level; i++)
 449                                 tp_locvar->vtids[i] = child_pid->numbers[i].nr;
 450                 }
 451         ),
 452
 453         TP_FIELDS(
 454                 ctf_array_text(char, parent_comm, parent->comm, TASK_COMM_LEN)
 455                 ctf_integer(pid_t, parent_tid, parent->pid)
 456                 ctf_integer(pid_t, parent_pid, parent->tgid)
 457 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,8,0))
 458                 ctf_integer(unsigned int, parent_ns_inum,
 459                         ({
 460                                 unsigned int parent_ns_inum = 0;
 461
 462                                 if (parent) {
 463                                         struct pid_namespace *pid_ns;
 464
 465                                         pid_ns = task_active_pid_ns(parent);
 466                                         if (pid_ns)
 467                                                 parent_ns_inum =
 468                                                         pid_ns->ns.inum;
 469                                 }
 470                                 parent_ns_inum;
 471                         }))
 472 #endif
 473                 ctf_array_text(char, child_comm, child->comm, TASK_COMM_LEN)
 474                 ctf_integer(pid_t, child_tid, child->pid)
 475                 ctf_sequence(pid_t, vtids, tp_locvar->vtids, u8, tp_locvar->ns_level)
 476                 ctf_integer(pid_t, child_pid, child->tgid)
 477 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,8,0))
 478                 ctf_integer(unsigned int, child_ns_inum,
 479                         ({
 480                                 unsigned int child_ns_inum = 0;
 481
 482                                 if (child) {
 483                                         struct pid_namespace *pid_ns;
 484
 485                                         pid_ns = task_active_pid_ns(child);
 486                                         if (pid_ns)
 487                                                 child_ns_inum =
 488                                                         pid_ns->ns.inum;
 489                                 }
 490                                 child_ns_inum;
 491                         }))
 492 #endif
 493         ),
 494
 495         TP_code_post()
 496 )
 497
 498 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,4,0))
 499 /*
 500  * Tracepoint for exec:
 501  */
 502 LTTNG_TRACEPOINT_EVENT(sched_process_exec,
 503
 504         TP_PROTO(struct task_struct *p, pid_t old_pid,
 505                  struct linux_binprm *bprm),
 506
 507         TP_ARGS(p, old_pid, bprm),
 508
 509         TP_FIELDS(
 510                 ctf_string(filename, bprm->filename)
 511                 ctf_integer(pid_t, tid, p->pid)
 512                 ctf_integer(pid_t, old_tid, old_pid)
 513         )
 514 )
 515 #endif
 516
 517 /*
 518  * XXX the below sched_stat tracepoints only apply to SCHED_OTHER/BATCH/IDLE
 519  *     adding sched_stat support to SCHED_FIFO/RR would be welcome.
 520  */
 521 LTTNG_TRACEPOINT_EVENT_CLASS(sched_stat_template,
 522
 523         TP_PROTO(struct task_struct *tsk, u64 delay),
 524
 525         TP_ARGS(tsk, delay),
 526
 527         TP_FIELDS(
 528                 ctf_array_text(char, comm, tsk->comm, TASK_COMM_LEN)
 529                 ctf_integer(pid_t, tid, tsk->pid)
 530                 ctf_integer(u64, delay, delay)
 531         )
 532 )
 533
 534
 535 /*
 536  * Tracepoint for accounting wait time (time the task is runnable
 537  * but not actually running due to scheduler contention).
 538  */
 539 LTTNG_TRACEPOINT_EVENT_INSTANCE(sched_stat_template, sched_stat_wait,
 540              TP_PROTO(struct task_struct *tsk, u64 delay),
 541              TP_ARGS(tsk, delay))
 542
 543 /*
 544  * Tracepoint for accounting sleep time (time the task is not runnable,
 545  * including iowait, see below).
 546  */
 547 LTTNG_TRACEPOINT_EVENT_INSTANCE(sched_stat_template, sched_stat_sleep,
 548              TP_PROTO(struct task_struct *tsk, u64 delay),
 549              TP_ARGS(tsk, delay))
 550
 551 /*
 552  * Tracepoint for accounting iowait time (time the task is not runnable
 553  * due to waiting on IO to complete).
 554  */
 555 LTTNG_TRACEPOINT_EVENT_INSTANCE(sched_stat_template, sched_stat_iowait,
 556              TP_PROTO(struct task_struct *tsk, u64 delay),
 557              TP_ARGS(tsk, delay))
 558
 559 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,3,0))
 560 /*
 561  * Tracepoint for accounting blocked time (time the task is in uninterruptible).
 562  */
 563 LTTNG_TRACEPOINT_EVENT_INSTANCE(sched_stat_template, sched_stat_blocked,
 564              TP_PROTO(struct task_struct *tsk, u64 delay),
 565              TP_ARGS(tsk, delay))
 566 #endif
 567
 568 /*
 569  * Tracepoint for accounting runtime (time the task is executing
 570  * on a CPU).
 571  */
 572 LTTNG_TRACEPOINT_EVENT(sched_stat_runtime,
 573
 574         TP_PROTO(struct task_struct *tsk, u64 runtime, u64 vruntime),
 575
 576         TP_ARGS(tsk, runtime, vruntime),
 577
 578         TP_FIELDS(
 579                 ctf_array_text(char, comm, tsk->comm, TASK_COMM_LEN)
 580                 ctf_integer(pid_t, tid, tsk->pid)
 581                 ctf_integer(u64, runtime, runtime)
 582                 ctf_integer(u64, vruntime, vruntime)
 583         )
 584 )
 585
 586 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,12,0) || \
 587         LTTNG_RT_KERNEL_RANGE(4,9,27,18, 4,10,0,0) || \
 588         LTTNG_RT_KERNEL_RANGE(4,11,5,1, 4,12,0,0))
 589 /*
 590  * Tracepoint for showing priority inheritance modifying a tasks
 591  * priority.
 592  */
 593 LTTNG_TRACEPOINT_EVENT(sched_pi_setprio,
 594
 595         TP_PROTO(struct task_struct *tsk, struct task_struct *pi_task),
 596
 597         TP_ARGS(tsk, pi_task),
 598
 599         TP_FIELDS(
 600                 ctf_array_text(char, comm, tsk->comm, TASK_COMM_LEN)
 601                 ctf_integer(pid_t, tid, tsk->pid)
 602                 ctf_integer(int, oldprio, tsk->prio - MAX_RT_PRIO)
 603                 ctf_integer(int, newprio, pi_task ? pi_task->prio - MAX_RT_PRIO : tsk->prio - MAX_RT_PRIO)
 604         )
 605 )
 606 #else
 607 /*
 608  * Tracepoint for showing priority inheritance modifying a tasks
 609  * priority.
 610  */
 611 LTTNG_TRACEPOINT_EVENT(sched_pi_setprio,
 612
 613         TP_PROTO(struct task_struct *tsk, int newprio),
 614
 615         TP_ARGS(tsk, newprio),
 616
 617         TP_FIELDS(
 618                 ctf_array_text(char, comm, tsk->comm, TASK_COMM_LEN)
 619                 ctf_integer(pid_t, tid, tsk->pid)
 620                 ctf_integer(int, oldprio, tsk->prio - MAX_RT_PRIO)
 621                 ctf_integer(int, newprio, newprio - MAX_RT_PRIO)
 622         )
 623 )
 624 #endif
 625
 626 #endif /* LTTNG_TRACE_SCHED_H */
 627
 628 /* This part must be outside protection */
 629 #include <probes/define_trace.h>