| 1 | #undef TRACE_SYSTEM |
| 2 | #define TRACE_SYSTEM sched |
| 3 | |
| 4 | #if !defined(LTTNG_TRACE_SCHED_H) || defined(TRACE_HEADER_MULTI_READ) |
| 5 | #define LTTNG_TRACE_SCHED_H |
| 6 | |
| 7 | #include "../../../probes/lttng-tracepoint-event.h" |
| 8 | #include <linux/sched.h> |
| 9 | #include <linux/pid_namespace.h> |
| 10 | #include <linux/binfmts.h> |
| 11 | #include <linux/version.h> |
| 12 | #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,9,0)) |
| 13 | #include <linux/sched/rt.h> |
| 14 | #endif |
| 15 | |
| 16 | #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,19,0)) |
| 17 | #define lttng_proc_inum ns.inum |
| 18 | #else |
| 19 | #define lttng_proc_inum proc_inum |
| 20 | #endif |
| 21 | |
| 22 | #define LTTNG_MAX_PID_NS_LEVEL 32 |
| 23 | |
| 24 | #ifndef _TRACE_SCHED_DEF_ |
| 25 | #define _TRACE_SCHED_DEF_ |
| 26 | |
| 27 | #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,19,0)) |
| 28 | |
| 29 | static inline long __trace_sched_switch_state(struct task_struct *p) |
| 30 | { |
| 31 | long state = p->state; |
| 32 | |
| 33 | #ifdef CONFIG_PREEMPT |
| 34 | #ifdef CONFIG_SCHED_DEBUG |
| 35 | BUG_ON(p != current); |
| 36 | #endif /* CONFIG_SCHED_DEBUG */ |
| 37 | /* |
| 38 | * For all intents and purposes a preempted task is a running task. |
| 39 | */ |
| 40 | if (preempt_count() & PREEMPT_ACTIVE) |
| 41 | state = TASK_RUNNING | TASK_STATE_MAX; |
| 42 | #endif /* CONFIG_PREEMPT */ |
| 43 | |
| 44 | return state; |
| 45 | } |
| 46 | |
| 47 | #elif (LINUX_VERSION_CODE >= KERNEL_VERSION(3,13,0)) |
| 48 | |
| 49 | static inline long __trace_sched_switch_state(struct task_struct *p) |
| 50 | { |
| 51 | long state = p->state; |
| 52 | |
| 53 | #ifdef CONFIG_PREEMPT |
| 54 | /* |
| 55 | * For all intents and purposes a preempted task is a running task. |
| 56 | */ |
| 57 | if (task_preempt_count(p) & PREEMPT_ACTIVE) |
| 58 | state = TASK_RUNNING | TASK_STATE_MAX; |
| 59 | #endif |
| 60 | |
| 61 | return state; |
| 62 | } |
| 63 | |
| 64 | #elif (LINUX_VERSION_CODE >= KERNEL_VERSION(3,2,0)) |
| 65 | |
| 66 | static inline long __trace_sched_switch_state(struct task_struct *p) |
| 67 | { |
| 68 | long state = p->state; |
| 69 | |
| 70 | #ifdef CONFIG_PREEMPT |
| 71 | /* |
| 72 | * For all intents and purposes a preempted task is a running task. |
| 73 | */ |
| 74 | if (task_thread_info(p)->preempt_count & PREEMPT_ACTIVE) |
| 75 | state = TASK_RUNNING | TASK_STATE_MAX; |
| 76 | #endif |
| 77 | |
| 78 | return state; |
| 79 | } |
| 80 | |
| 81 | #elif (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,35)) |
| 82 | |
| 83 | static inline long __trace_sched_switch_state(struct task_struct *p) |
| 84 | { |
| 85 | long state = p->state; |
| 86 | |
| 87 | #ifdef CONFIG_PREEMPT |
| 88 | /* |
| 89 | * For all intents and purposes a preempted task is a running task. |
| 90 | */ |
| 91 | if (task_thread_info(p)->preempt_count & PREEMPT_ACTIVE) |
| 92 | state = TASK_RUNNING; |
| 93 | #endif |
| 94 | |
| 95 | return state; |
| 96 | } |
| 97 | |
| 98 | #endif |
| 99 | |
| 100 | #endif /* _TRACE_SCHED_DEF_ */ |
| 101 | |
| 102 | /* |
| 103 | * Tracepoint for calling kthread_stop, performed to end a kthread: |
| 104 | */ |
| 105 | LTTNG_TRACEPOINT_EVENT(sched_kthread_stop, |
| 106 | |
| 107 | TP_PROTO(struct task_struct *t), |
| 108 | |
| 109 | TP_ARGS(t), |
| 110 | |
| 111 | TP_FIELDS( |
| 112 | ctf_array_text(char, comm, t->comm, TASK_COMM_LEN) |
| 113 | ctf_integer(pid_t, tid, t->pid) |
| 114 | ) |
| 115 | ) |
| 116 | |
| 117 | /* |
| 118 | * Tracepoint for the return value of the kthread stopping: |
| 119 | */ |
| 120 | LTTNG_TRACEPOINT_EVENT(sched_kthread_stop_ret, |
| 121 | |
| 122 | TP_PROTO(int ret), |
| 123 | |
| 124 | TP_ARGS(ret), |
| 125 | |
| 126 | TP_FIELDS( |
| 127 | ctf_integer(int, ret, ret) |
| 128 | ) |
| 129 | ) |
| 130 | |
| 131 | /* |
| 132 | * Tracepoint for waking up a task: |
| 133 | */ |
| 134 | LTTNG_TRACEPOINT_EVENT_CLASS(sched_wakeup_template, |
| 135 | |
| 136 | #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,35)) |
| 137 | TP_PROTO(struct task_struct *p, int success), |
| 138 | |
| 139 | TP_ARGS(p, success), |
| 140 | #else |
| 141 | TP_PROTO(struct rq *rq, struct task_struct *p, int success), |
| 142 | |
| 143 | TP_ARGS(rq, p, success), |
| 144 | #endif |
| 145 | |
| 146 | TP_FIELDS( |
| 147 | ctf_array_text(char, comm, p->comm, TASK_COMM_LEN) |
| 148 | ctf_integer(pid_t, tid, p->pid) |
| 149 | ctf_integer(int, prio, p->prio) |
| 150 | ctf_integer(int, success, success) |
| 151 | #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,32)) |
| 152 | ctf_integer(int, target_cpu, task_cpu(p)) |
| 153 | #endif |
| 154 | ) |
| 155 | ) |
| 156 | |
| 157 | #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,35)) |
| 158 | |
| 159 | LTTNG_TRACEPOINT_EVENT_INSTANCE(sched_wakeup_template, sched_wakeup, |
| 160 | TP_PROTO(struct task_struct *p, int success), |
| 161 | TP_ARGS(p, success)) |
| 162 | |
| 163 | /* |
| 164 | * Tracepoint for waking up a new task: |
| 165 | */ |
| 166 | LTTNG_TRACEPOINT_EVENT_INSTANCE(sched_wakeup_template, sched_wakeup_new, |
| 167 | TP_PROTO(struct task_struct *p, int success), |
| 168 | TP_ARGS(p, success)) |
| 169 | |
| 170 | #else /* #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,35)) */ |
| 171 | |
| 172 | LTTNG_TRACEPOINT_EVENT_INSTANCE(sched_wakeup_template, sched_wakeup, |
| 173 | TP_PROTO(struct rq *rq, struct task_struct *p, int success), |
| 174 | TP_ARGS(rq, p, success)) |
| 175 | |
| 176 | /* |
| 177 | * Tracepoint for waking up a new task: |
| 178 | */ |
| 179 | LTTNG_TRACEPOINT_EVENT_INSTANCE(sched_wakeup_template, sched_wakeup_new, |
| 180 | TP_PROTO(struct rq *rq, struct task_struct *p, int success), |
| 181 | TP_ARGS(rq, p, success)) |
| 182 | |
| 183 | #endif /* #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,35)) */ |
| 184 | |
| 185 | /* |
| 186 | * Tracepoint for task switches, performed by the scheduler: |
| 187 | */ |
| 188 | LTTNG_TRACEPOINT_EVENT(sched_switch, |
| 189 | |
| 190 | #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,35)) |
| 191 | TP_PROTO(struct task_struct *prev, |
| 192 | struct task_struct *next), |
| 193 | |
| 194 | TP_ARGS(prev, next), |
| 195 | #else /* #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,35)) */ |
| 196 | TP_PROTO(struct rq *rq, struct task_struct *prev, |
| 197 | struct task_struct *next), |
| 198 | |
| 199 | TP_ARGS(rq, prev, next), |
| 200 | #endif /* #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,35)) */ |
| 201 | |
| 202 | TP_FIELDS( |
| 203 | ctf_array_text(char, prev_comm, prev->comm, TASK_COMM_LEN) |
| 204 | ctf_integer(pid_t, prev_tid, prev->pid) |
| 205 | ctf_integer(int, prev_prio, prev->prio - MAX_RT_PRIO) |
| 206 | #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,35)) |
| 207 | ctf_integer(long, prev_state, __trace_sched_switch_state(prev)) |
| 208 | #else |
| 209 | ctf_integer(long, prev_state, prev->state) |
| 210 | #endif |
| 211 | ctf_array_text(char, next_comm, next->comm, TASK_COMM_LEN) |
| 212 | ctf_integer(pid_t, next_tid, next->pid) |
| 213 | ctf_integer(int, next_prio, next->prio - MAX_RT_PRIO) |
| 214 | ) |
| 215 | ) |
| 216 | |
| 217 | /* |
| 218 | * Tracepoint for a task being migrated: |
| 219 | */ |
| 220 | LTTNG_TRACEPOINT_EVENT(sched_migrate_task, |
| 221 | |
| 222 | TP_PROTO(struct task_struct *p, int dest_cpu), |
| 223 | |
| 224 | TP_ARGS(p, dest_cpu), |
| 225 | |
| 226 | TP_FIELDS( |
| 227 | ctf_array_text(char, comm, p->comm, TASK_COMM_LEN) |
| 228 | ctf_integer(pid_t, tid, p->pid) |
| 229 | ctf_integer(int, prio, p->prio - MAX_RT_PRIO) |
| 230 | ctf_integer(int, orig_cpu, task_cpu(p)) |
| 231 | ctf_integer(int, dest_cpu, dest_cpu) |
| 232 | ) |
| 233 | ) |
| 234 | |
| 235 | LTTNG_TRACEPOINT_EVENT_CLASS(sched_process_template, |
| 236 | |
| 237 | TP_PROTO(struct task_struct *p), |
| 238 | |
| 239 | TP_ARGS(p), |
| 240 | |
| 241 | TP_FIELDS( |
| 242 | ctf_array_text(char, comm, p->comm, TASK_COMM_LEN) |
| 243 | ctf_integer(pid_t, tid, p->pid) |
| 244 | ctf_integer(int, prio, p->prio - MAX_RT_PRIO) |
| 245 | ) |
| 246 | ) |
| 247 | |
| 248 | /* |
| 249 | * Tracepoint for freeing a task: |
| 250 | */ |
| 251 | LTTNG_TRACEPOINT_EVENT_INSTANCE(sched_process_template, sched_process_free, |
| 252 | TP_PROTO(struct task_struct *p), |
| 253 | TP_ARGS(p)) |
| 254 | |
| 255 | |
| 256 | /* |
| 257 | * Tracepoint for a task exiting: |
| 258 | */ |
| 259 | LTTNG_TRACEPOINT_EVENT_INSTANCE(sched_process_template, sched_process_exit, |
| 260 | TP_PROTO(struct task_struct *p), |
| 261 | TP_ARGS(p)) |
| 262 | |
| 263 | /* |
| 264 | * Tracepoint for waiting on task to unschedule: |
| 265 | */ |
| 266 | #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,35)) |
| 267 | LTTNG_TRACEPOINT_EVENT_INSTANCE(sched_process_template, sched_wait_task, |
| 268 | TP_PROTO(struct task_struct *p), |
| 269 | TP_ARGS(p)) |
| 270 | #else /* #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,35)) */ |
| 271 | LTTNG_TRACEPOINT_EVENT_INSTANCE(sched_process_template, sched_wait_task, |
| 272 | TP_PROTO(struct rq *rq, struct task_struct *p), |
| 273 | TP_ARGS(rq, p)) |
| 274 | #endif /* #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,35)) */ |
| 275 | |
| 276 | /* |
| 277 | * Tracepoint for a waiting task: |
| 278 | */ |
| 279 | LTTNG_TRACEPOINT_EVENT(sched_process_wait, |
| 280 | |
| 281 | TP_PROTO(struct pid *pid), |
| 282 | |
| 283 | TP_ARGS(pid), |
| 284 | |
| 285 | TP_FIELDS( |
| 286 | ctf_array_text(char, comm, current->comm, TASK_COMM_LEN) |
| 287 | ctf_integer(pid_t, tid, pid_nr(pid)) |
| 288 | ctf_integer(int, prio, current->prio - MAX_RT_PRIO) |
| 289 | ) |
| 290 | ) |
| 291 | |
| 292 | /* |
| 293 | * Tracepoint for do_fork. |
| 294 | * Saving both TID and PID information, especially for the child, allows |
| 295 | * trace analyzers to distinguish between creation of a new process and |
| 296 | * creation of a new thread. Newly created processes will have child_tid |
| 297 | * == child_pid, while creation of a thread yields to child_tid != |
| 298 | * child_pid. |
| 299 | */ |
| 300 | LTTNG_TRACEPOINT_EVENT_CODE(sched_process_fork, |
| 301 | |
| 302 | TP_PROTO(struct task_struct *parent, struct task_struct *child), |
| 303 | |
| 304 | TP_ARGS(parent, child), |
| 305 | |
| 306 | TP_locvar( |
| 307 | pid_t vtids[LTTNG_MAX_PID_NS_LEVEL]; |
| 308 | unsigned int ns_level; |
| 309 | ), |
| 310 | |
| 311 | TP_code( |
| 312 | if (child) { |
| 313 | struct pid *child_pid; |
| 314 | unsigned int i; |
| 315 | |
| 316 | child_pid = task_pid(child); |
| 317 | tp_locvar->ns_level = |
| 318 | min_t(unsigned int, child_pid->level + 1, |
| 319 | LTTNG_MAX_PID_NS_LEVEL); |
| 320 | for (i = 0; i < tp_locvar->ns_level; i++) |
| 321 | tp_locvar->vtids[i] = child_pid->numbers[i].nr; |
| 322 | } |
| 323 | ), |
| 324 | |
| 325 | TP_FIELDS( |
| 326 | ctf_array_text(char, parent_comm, parent->comm, TASK_COMM_LEN) |
| 327 | ctf_integer(pid_t, parent_tid, parent->pid) |
| 328 | ctf_integer(pid_t, parent_pid, parent->tgid) |
| 329 | #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,8,0)) |
| 330 | ctf_integer(unsigned int, parent_ns_inum, |
| 331 | ({ |
| 332 | unsigned int parent_ns_inum = 0; |
| 333 | |
| 334 | if (parent) { |
| 335 | struct pid_namespace *pid_ns; |
| 336 | |
| 337 | pid_ns = task_active_pid_ns(parent); |
| 338 | if (pid_ns) |
| 339 | parent_ns_inum = |
| 340 | pid_ns->lttng_proc_inum; |
| 341 | } |
| 342 | parent_ns_inum; |
| 343 | })) |
| 344 | #endif |
| 345 | ctf_array_text(char, child_comm, child->comm, TASK_COMM_LEN) |
| 346 | ctf_integer(pid_t, child_tid, child->pid) |
| 347 | ctf_sequence(pid_t, vtids, tp_locvar->vtids, u8, tp_locvar->ns_level) |
| 348 | ctf_integer(pid_t, child_pid, child->tgid) |
| 349 | #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,8,0)) |
| 350 | ctf_integer(unsigned int, child_ns_inum, |
| 351 | ({ |
| 352 | unsigned int child_ns_inum = 0; |
| 353 | |
| 354 | if (child) { |
| 355 | struct pid_namespace *pid_ns; |
| 356 | |
| 357 | pid_ns = task_active_pid_ns(child); |
| 358 | if (pid_ns) |
| 359 | child_ns_inum = |
| 360 | pid_ns->lttng_proc_inum; |
| 361 | } |
| 362 | child_ns_inum; |
| 363 | })) |
| 364 | #endif |
| 365 | ) |
| 366 | ) |
| 367 | |
| 368 | #if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,33)) |
| 369 | /* |
| 370 | * Tracepoint for sending a signal: |
| 371 | */ |
| 372 | LTTNG_TRACEPOINT_EVENT(sched_signal_send, |
| 373 | |
| 374 | TP_PROTO(int sig, struct task_struct *p), |
| 375 | |
| 376 | TP_ARGS(sig, p), |
| 377 | |
| 378 | TP_FIELDS( |
| 379 | ctf_integer(int, sig, sig) |
| 380 | ctf_array_text(char, comm, p->comm, TASK_COMM_LEN) |
| 381 | ctf_integer(pid_t, tid, p->pid) |
| 382 | ) |
| 383 | ) |
| 384 | #endif |
| 385 | |
| 386 | #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,4,0)) |
| 387 | /* |
| 388 | * Tracepoint for exec: |
| 389 | */ |
| 390 | LTTNG_TRACEPOINT_EVENT(sched_process_exec, |
| 391 | |
| 392 | TP_PROTO(struct task_struct *p, pid_t old_pid, |
| 393 | struct linux_binprm *bprm), |
| 394 | |
| 395 | TP_ARGS(p, old_pid, bprm), |
| 396 | |
| 397 | TP_FIELDS( |
| 398 | ctf_string(filename, bprm->filename) |
| 399 | ctf_integer(pid_t, tid, p->pid) |
| 400 | ctf_integer(pid_t, old_tid, old_pid) |
| 401 | ) |
| 402 | ) |
| 403 | #endif |
| 404 | |
| 405 | #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,32)) |
| 406 | /* |
| 407 | * XXX the below sched_stat tracepoints only apply to SCHED_OTHER/BATCH/IDLE |
| 408 | * adding sched_stat support to SCHED_FIFO/RR would be welcome. |
| 409 | */ |
| 410 | LTTNG_TRACEPOINT_EVENT_CLASS(sched_stat_template, |
| 411 | |
| 412 | TP_PROTO(struct task_struct *tsk, u64 delay), |
| 413 | |
| 414 | TP_ARGS(tsk, delay), |
| 415 | |
| 416 | TP_FIELDS( |
| 417 | ctf_array_text(char, comm, tsk->comm, TASK_COMM_LEN) |
| 418 | ctf_integer(pid_t, tid, tsk->pid) |
| 419 | ctf_integer(u64, delay, delay) |
| 420 | ) |
| 421 | ) |
| 422 | |
| 423 | |
| 424 | /* |
| 425 | * Tracepoint for accounting wait time (time the task is runnable |
| 426 | * but not actually running due to scheduler contention). |
| 427 | */ |
| 428 | LTTNG_TRACEPOINT_EVENT_INSTANCE(sched_stat_template, sched_stat_wait, |
| 429 | TP_PROTO(struct task_struct *tsk, u64 delay), |
| 430 | TP_ARGS(tsk, delay)) |
| 431 | |
| 432 | /* |
| 433 | * Tracepoint for accounting sleep time (time the task is not runnable, |
| 434 | * including iowait, see below). |
| 435 | */ |
| 436 | LTTNG_TRACEPOINT_EVENT_INSTANCE(sched_stat_template, sched_stat_sleep, |
| 437 | TP_PROTO(struct task_struct *tsk, u64 delay), |
| 438 | TP_ARGS(tsk, delay)) |
| 439 | |
| 440 | /* |
| 441 | * Tracepoint for accounting iowait time (time the task is not runnable |
| 442 | * due to waiting on IO to complete). |
| 443 | */ |
| 444 | LTTNG_TRACEPOINT_EVENT_INSTANCE(sched_stat_template, sched_stat_iowait, |
| 445 | TP_PROTO(struct task_struct *tsk, u64 delay), |
| 446 | TP_ARGS(tsk, delay)) |
| 447 | |
| 448 | #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,3,0)) |
| 449 | /* |
| 450 | * Tracepoint for accounting blocked time (time the task is in uninterruptible). |
| 451 | */ |
| 452 | LTTNG_TRACEPOINT_EVENT_INSTANCE(sched_stat_template, sched_stat_blocked, |
| 453 | TP_PROTO(struct task_struct *tsk, u64 delay), |
| 454 | TP_ARGS(tsk, delay)) |
| 455 | #endif |
| 456 | |
| 457 | /* |
| 458 | * Tracepoint for accounting runtime (time the task is executing |
| 459 | * on a CPU). |
| 460 | */ |
| 461 | LTTNG_TRACEPOINT_EVENT(sched_stat_runtime, |
| 462 | |
| 463 | TP_PROTO(struct task_struct *tsk, u64 runtime, u64 vruntime), |
| 464 | |
| 465 | TP_ARGS(tsk, runtime, vruntime), |
| 466 | |
| 467 | TP_FIELDS( |
| 468 | ctf_array_text(char, comm, tsk->comm, TASK_COMM_LEN) |
| 469 | ctf_integer(pid_t, tid, tsk->pid) |
| 470 | ctf_integer(u64, runtime, runtime) |
| 471 | ctf_integer(u64, vruntime, vruntime) |
| 472 | ) |
| 473 | ) |
| 474 | #endif |
| 475 | |
| 476 | #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,37)) |
| 477 | /* |
| 478 | * Tracepoint for showing priority inheritance modifying a tasks |
| 479 | * priority. |
| 480 | */ |
| 481 | LTTNG_TRACEPOINT_EVENT(sched_pi_setprio, |
| 482 | |
| 483 | TP_PROTO(struct task_struct *tsk, int newprio), |
| 484 | |
| 485 | TP_ARGS(tsk, newprio), |
| 486 | |
| 487 | TP_FIELDS( |
| 488 | ctf_array_text(char, comm, tsk->comm, TASK_COMM_LEN) |
| 489 | ctf_integer(pid_t, tid, tsk->pid) |
| 490 | ctf_integer(int, oldprio, tsk->prio - MAX_RT_PRIO) |
| 491 | ctf_integer(int, newprio, newprio - MAX_RT_PRIO) |
| 492 | ) |
| 493 | ) |
| 494 | #endif |
| 495 | |
| 496 | #endif /* LTTNG_TRACE_SCHED_H */ |
| 497 | |
| 498 | /* This part must be outside protection */ |
| 499 | #include "../../../probes/define_trace.h" |