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