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, int success), 59 60 TP_ARGS(__perf_task(p), success), 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 = success; 75 __entry->target_cpu = task_cpu(p); 76 ), 77 78 TP_printk("comm=%s pid=%d prio=%d success=%d target_cpu=%03d", 79 __entry->comm, __entry->pid, __entry->prio, 80 __entry->success, __entry->target_cpu) 81 ); 82 83 DEFINE_EVENT(sched_wakeup_template, sched_wakeup, 84 TP_PROTO(struct task_struct *p, int success), 85 TP_ARGS(p, success)); 86 87 /* 88 * Tracepoint for waking up a new task: 89 */ 90 DEFINE_EVENT(sched_wakeup_template, sched_wakeup_new, 91 TP_PROTO(struct task_struct *p, int success), 92 TP_ARGS(p, success)); 93 94 #ifdef CREATE_TRACE_POINTS 95 static inline long __trace_sched_switch_state(struct task_struct *p) 96 { 97 long state = p->state; 98 99 #ifdef CONFIG_PREEMPT 100 /* 101 * For all intents and purposes a preempted task is a running task. 102 */ 103 if (task_preempt_count(p) & PREEMPT_ACTIVE) 104 state = TASK_RUNNING | TASK_STATE_MAX; 105 #endif 106 107 return state; 108 } 109 #endif 110 111 /* 112 * Tracepoint for task switches, performed by the scheduler: 113 */ 114 TRACE_EVENT(sched_switch, 115 116 TP_PROTO(struct task_struct *prev, 117 struct task_struct *next), 118 119 TP_ARGS(prev, next), 120 121 TP_STRUCT__entry( 122 __array( char, prev_comm, TASK_COMM_LEN ) 123 __field( pid_t, prev_pid ) 124 __field( int, prev_prio ) 125 __field( long, prev_state ) 126 __array( char, next_comm, TASK_COMM_LEN ) 127 __field( pid_t, next_pid ) 128 __field( int, next_prio ) 129 ), 130 131 TP_fast_assign( 132 memcpy(__entry->next_comm, next->comm, TASK_COMM_LEN); 133 __entry->prev_pid = prev->pid; 134 __entry->prev_prio = prev->prio; 135 __entry->prev_state = __trace_sched_switch_state(prev); 136 memcpy(__entry->prev_comm, prev->comm, TASK_COMM_LEN); 137 __entry->next_pid = next->pid; 138 __entry->next_prio = next->prio; 139 ), 140 141 TP_printk("prev_comm=%s prev_pid=%d prev_prio=%d prev_state=%s%s ==> next_comm=%s next_pid=%d next_prio=%d", 142 __entry->prev_comm, __entry->prev_pid, __entry->prev_prio, 143 __entry->prev_state & (TASK_STATE_MAX-1) ? 144 __print_flags(__entry->prev_state & (TASK_STATE_MAX-1), "|", 145 { 1, "S"} , { 2, "D" }, { 4, "T" }, { 8, "t" }, 146 { 16, "Z" }, { 32, "X" }, { 64, "x" }, 147 { 128, "K" }, { 256, "W" }, { 512, "P" }) : "R", 148 __entry->prev_state & TASK_STATE_MAX ? "+" : "", 149 __entry->next_comm, __entry->next_pid, __entry->next_prio) 150 ); 151 152 /* 153 * Tracepoint for a task being migrated: 154 */ 155 TRACE_EVENT(sched_migrate_task, 156 157 TP_PROTO(struct task_struct *p, int dest_cpu), 158 159 TP_ARGS(p, dest_cpu), 160 161 TP_STRUCT__entry( 162 __array( char, comm, TASK_COMM_LEN ) 163 __field( pid_t, pid ) 164 __field( int, prio ) 165 __field( int, orig_cpu ) 166 __field( int, dest_cpu ) 167 ), 168 169 TP_fast_assign( 170 memcpy(__entry->comm, p->comm, TASK_COMM_LEN); 171 __entry->pid = p->pid; 172 __entry->prio = p->prio; 173 __entry->orig_cpu = task_cpu(p); 174 __entry->dest_cpu = dest_cpu; 175 ), 176 177 TP_printk("comm=%s pid=%d prio=%d orig_cpu=%d dest_cpu=%d", 178 __entry->comm, __entry->pid, __entry->prio, 179 __entry->orig_cpu, __entry->dest_cpu) 180 ); 181 182 DECLARE_EVENT_CLASS(sched_process_template, 183 184 TP_PROTO(struct task_struct *p), 185 186 TP_ARGS(p), 187 188 TP_STRUCT__entry( 189 __array( char, comm, TASK_COMM_LEN ) 190 __field( pid_t, pid ) 191 __field( int, prio ) 192 ), 193 194 TP_fast_assign( 195 memcpy(__entry->comm, p->comm, TASK_COMM_LEN); 196 __entry->pid = p->pid; 197 __entry->prio = p->prio; 198 ), 199 200 TP_printk("comm=%s pid=%d prio=%d", 201 __entry->comm, __entry->pid, __entry->prio) 202 ); 203 204 /* 205 * Tracepoint for freeing a task: 206 */ 207 DEFINE_EVENT(sched_process_template, sched_process_free, 208 TP_PROTO(struct task_struct *p), 209 TP_ARGS(p)); 210 211 212 /* 213 * Tracepoint for a task exiting: 214 */ 215 DEFINE_EVENT(sched_process_template, sched_process_exit, 216 TP_PROTO(struct task_struct *p), 217 TP_ARGS(p)); 218 219 /* 220 * Tracepoint for waiting on task to unschedule: 221 */ 222 DEFINE_EVENT(sched_process_template, sched_wait_task, 223 TP_PROTO(struct task_struct *p), 224 TP_ARGS(p)); 225 226 /* 227 * Tracepoint for a waiting task: 228 */ 229 TRACE_EVENT(sched_process_wait, 230 231 TP_PROTO(struct pid *pid), 232 233 TP_ARGS(pid), 234 235 TP_STRUCT__entry( 236 __array( char, comm, TASK_COMM_LEN ) 237 __field( pid_t, pid ) 238 __field( int, prio ) 239 ), 240 241 TP_fast_assign( 242 memcpy(__entry->comm, current->comm, TASK_COMM_LEN); 243 __entry->pid = pid_nr(pid); 244 __entry->prio = current->prio; 245 ), 246 247 TP_printk("comm=%s pid=%d prio=%d", 248 __entry->comm, __entry->pid, __entry->prio) 249 ); 250 251 /* 252 * Tracepoint for do_fork: 253 */ 254 TRACE_EVENT(sched_process_fork, 255 256 TP_PROTO(struct task_struct *parent, struct task_struct *child), 257 258 TP_ARGS(parent, child), 259 260 TP_STRUCT__entry( 261 __array( char, parent_comm, TASK_COMM_LEN ) 262 __field( pid_t, parent_pid ) 263 __array( char, child_comm, TASK_COMM_LEN ) 264 __field( pid_t, child_pid ) 265 ), 266 267 TP_fast_assign( 268 memcpy(__entry->parent_comm, parent->comm, TASK_COMM_LEN); 269 __entry->parent_pid = parent->pid; 270 memcpy(__entry->child_comm, child->comm, TASK_COMM_LEN); 271 __entry->child_pid = child->pid; 272 ), 273 274 TP_printk("comm=%s pid=%d child_comm=%s child_pid=%d", 275 __entry->parent_comm, __entry->parent_pid, 276 __entry->child_comm, __entry->child_pid) 277 ); 278 279 /* 280 * Tracepoint for exec: 281 */ 282 TRACE_EVENT(sched_process_exec, 283 284 TP_PROTO(struct task_struct *p, pid_t old_pid, 285 struct linux_binprm *bprm), 286 287 TP_ARGS(p, old_pid, bprm), 288 289 TP_STRUCT__entry( 290 __string( filename, bprm->filename ) 291 __field( pid_t, pid ) 292 __field( pid_t, old_pid ) 293 ), 294 295 TP_fast_assign( 296 __assign_str(filename, bprm->filename); 297 __entry->pid = p->pid; 298 __entry->old_pid = old_pid; 299 ), 300 301 TP_printk("filename=%s pid=%d old_pid=%d", __get_str(filename), 302 __entry->pid, __entry->old_pid) 303 ); 304 305 /* 306 * XXX the below sched_stat tracepoints only apply to SCHED_OTHER/BATCH/IDLE 307 * adding sched_stat support to SCHED_FIFO/RR would be welcome. 308 */ 309 DECLARE_EVENT_CLASS(sched_stat_template, 310 311 TP_PROTO(struct task_struct *tsk, u64 delay), 312 313 TP_ARGS(__perf_task(tsk), __perf_count(delay)), 314 315 TP_STRUCT__entry( 316 __array( char, comm, TASK_COMM_LEN ) 317 __field( pid_t, pid ) 318 __field( u64, delay ) 319 ), 320 321 TP_fast_assign( 322 memcpy(__entry->comm, tsk->comm, TASK_COMM_LEN); 323 __entry->pid = tsk->pid; 324 __entry->delay = delay; 325 ), 326 327 TP_printk("comm=%s pid=%d delay=%Lu [ns]", 328 __entry->comm, __entry->pid, 329 (unsigned long long)__entry->delay) 330 ); 331 332 333 /* 334 * Tracepoint for accounting wait time (time the task is runnable 335 * but not actually running due to scheduler contention). 336 */ 337 DEFINE_EVENT(sched_stat_template, sched_stat_wait, 338 TP_PROTO(struct task_struct *tsk, u64 delay), 339 TP_ARGS(tsk, delay)); 340 341 /* 342 * Tracepoint for accounting sleep time (time the task is not runnable, 343 * including iowait, see below). 344 */ 345 DEFINE_EVENT(sched_stat_template, sched_stat_sleep, 346 TP_PROTO(struct task_struct *tsk, u64 delay), 347 TP_ARGS(tsk, delay)); 348 349 /* 350 * Tracepoint for accounting iowait time (time the task is not runnable 351 * due to waiting on IO to complete). 352 */ 353 DEFINE_EVENT(sched_stat_template, sched_stat_iowait, 354 TP_PROTO(struct task_struct *tsk, u64 delay), 355 TP_ARGS(tsk, delay)); 356 357 /* 358 * Tracepoint for accounting blocked time (time the task is in uninterruptible). 359 */ 360 DEFINE_EVENT(sched_stat_template, sched_stat_blocked, 361 TP_PROTO(struct task_struct *tsk, u64 delay), 362 TP_ARGS(tsk, delay)); 363 364 /* 365 * Tracepoint for accounting runtime (time the task is executing 366 * on a CPU). 367 */ 368 DECLARE_EVENT_CLASS(sched_stat_runtime, 369 370 TP_PROTO(struct task_struct *tsk, u64 runtime, u64 vruntime), 371 372 TP_ARGS(tsk, __perf_count(runtime), vruntime), 373 374 TP_STRUCT__entry( 375 __array( char, comm, TASK_COMM_LEN ) 376 __field( pid_t, pid ) 377 __field( u64, runtime ) 378 __field( u64, vruntime ) 379 ), 380 381 TP_fast_assign( 382 memcpy(__entry->comm, tsk->comm, TASK_COMM_LEN); 383 __entry->pid = tsk->pid; 384 __entry->runtime = runtime; 385 __entry->vruntime = vruntime; 386 ), 387 388 TP_printk("comm=%s pid=%d runtime=%Lu [ns] vruntime=%Lu [ns]", 389 __entry->comm, __entry->pid, 390 (unsigned long long)__entry->runtime, 391 (unsigned long long)__entry->vruntime) 392 ); 393 394 DEFINE_EVENT(sched_stat_runtime, sched_stat_runtime, 395 TP_PROTO(struct task_struct *tsk, u64 runtime, u64 vruntime), 396 TP_ARGS(tsk, runtime, vruntime)); 397 398 /* 399 * Tracepoint for showing priority inheritance modifying a tasks 400 * priority. 401 */ 402 TRACE_EVENT(sched_pi_setprio, 403 404 TP_PROTO(struct task_struct *tsk, int newprio), 405 406 TP_ARGS(tsk, newprio), 407 408 TP_STRUCT__entry( 409 __array( char, comm, TASK_COMM_LEN ) 410 __field( pid_t, pid ) 411 __field( int, oldprio ) 412 __field( int, newprio ) 413 ), 414 415 TP_fast_assign( 416 memcpy(__entry->comm, tsk->comm, TASK_COMM_LEN); 417 __entry->pid = tsk->pid; 418 __entry->oldprio = tsk->prio; 419 __entry->newprio = newprio; 420 ), 421 422 TP_printk("comm=%s pid=%d oldprio=%d newprio=%d", 423 __entry->comm, __entry->pid, 424 __entry->oldprio, __entry->newprio) 425 ); 426 427 #ifdef CONFIG_DETECT_HUNG_TASK 428 TRACE_EVENT(sched_process_hang, 429 TP_PROTO(struct task_struct *tsk), 430 TP_ARGS(tsk), 431 432 TP_STRUCT__entry( 433 __array( char, comm, TASK_COMM_LEN ) 434 __field( pid_t, pid ) 435 ), 436 437 TP_fast_assign( 438 memcpy(__entry->comm, tsk->comm, TASK_COMM_LEN); 439 __entry->pid = tsk->pid; 440 ), 441 442 TP_printk("comm=%s pid=%d", __entry->comm, __entry->pid) 443 ); 444 #endif /* CONFIG_DETECT_HUNG_TASK */ 445 446 #endif /* _TRACE_SCHED_H */ 447 448 /* This part must be outside protection */ 449 #include <trace/define_trace.h> 450