2 #define TRACE_SYSTEM sched
4 #if !defined(_TRACE_SCHED_H) || defined(TRACE_HEADER_MULTI_READ)
7 #include <linux/sched.h>
8 #include <linux/tracepoint.h>
9 #include <linux/binfmts.h>
12 * Tracepoint for calling kthread_stop, performed to end a kthread:
14 TRACE_EVENT(sched_kthread_stop,
16 TP_PROTO(struct task_struct *t),
21 __array( char, comm, TASK_COMM_LEN )
26 memcpy(__entry->comm, t->comm, TASK_COMM_LEN);
27 __entry->pid = t->pid;
30 TP_printk("comm=%s pid=%d", __entry->comm, __entry->pid)
34 * Tracepoint for the return value of the kthread stopping:
36 TRACE_EVENT(sched_kthread_stop_ret,
50 TP_printk("ret=%d", __entry->ret)
54 * Tracepoint for waking up a task:
56 DECLARE_EVENT_CLASS(sched_wakeup_template,
58 TP_PROTO(struct task_struct *p, int success),
63 __array( char, comm, TASK_COMM_LEN )
66 __field( int, success )
67 __field( int, target_cpu )
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);
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)
83 DEFINE_EVENT(sched_wakeup_template, sched_wakeup,
84 TP_PROTO(struct task_struct *p, int success),
88 * Tracepoint for waking up a new task:
90 DEFINE_EVENT(sched_wakeup_template, sched_wakeup_new,
91 TP_PROTO(struct task_struct *p, int success),
94 #ifdef CREATE_TRACE_POINTS
95 static inline long __trace_sched_switch_state(struct task_struct *p)
97 long state = p->state;
101 * For all intents and purposes a preempted task is a running task.
103 if (task_thread_info(p)->preempt_count & PREEMPT_ACTIVE)
104 state = TASK_RUNNING | TASK_STATE_MAX;
112 * Tracepoint for task switches, performed by the scheduler:
114 TRACE_EVENT(sched_switch,
116 TP_PROTO(struct task_struct *prev,
117 struct task_struct *next),
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 )
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;
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" },
148 __entry->prev_state & TASK_STATE_MAX ? "+" : "",
149 __entry->next_comm, __entry->next_pid, __entry->next_prio)
153 * Tracepoint for a task being migrated:
155 TRACE_EVENT(sched_migrate_task,
157 TP_PROTO(struct task_struct *p, int dest_cpu),
159 TP_ARGS(p, dest_cpu),
162 __array( char, comm, TASK_COMM_LEN )
163 __field( pid_t, pid )
165 __field( int, orig_cpu )
166 __field( int, dest_cpu )
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;
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)
182 DECLARE_EVENT_CLASS(sched_process_template,
184 TP_PROTO(struct task_struct *p),
189 __array( char, comm, TASK_COMM_LEN )
190 __field( pid_t, pid )
195 memcpy(__entry->comm, p->comm, TASK_COMM_LEN);
196 __entry->pid = p->pid;
197 __entry->prio = p->prio;
200 TP_printk("comm=%s pid=%d prio=%d",
201 __entry->comm, __entry->pid, __entry->prio)
205 * Tracepoint for freeing a task:
207 DEFINE_EVENT(sched_process_template, sched_process_free,
208 TP_PROTO(struct task_struct *p),
213 * Tracepoint for a task exiting:
215 DEFINE_EVENT(sched_process_template, sched_process_exit,
216 TP_PROTO(struct task_struct *p),
220 * Tracepoint for waiting on task to unschedule:
222 DEFINE_EVENT(sched_process_template, sched_wait_task,
223 TP_PROTO(struct task_struct *p),
227 * Tracepoint for a waiting task:
229 TRACE_EVENT(sched_process_wait,
231 TP_PROTO(struct pid *pid),
236 __array( char, comm, TASK_COMM_LEN )
237 __field( pid_t, pid )
242 memcpy(__entry->comm, current->comm, TASK_COMM_LEN);
243 __entry->pid = pid_nr(pid);
244 __entry->prio = current->prio;
247 TP_printk("comm=%s pid=%d prio=%d",
248 __entry->comm, __entry->pid, __entry->prio)
252 * Tracepoint for do_fork:
254 TRACE_EVENT(sched_process_fork,
256 TP_PROTO(struct task_struct *parent, struct task_struct *child),
258 TP_ARGS(parent, child),
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 )
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;
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)
280 * Tracepoint for exec:
282 TRACE_EVENT(sched_process_exec,
284 TP_PROTO(struct task_struct *p, pid_t old_pid,
285 struct linux_binprm *bprm),
287 TP_ARGS(p, old_pid, bprm),
290 __string( filename, bprm->filename )
291 __field( pid_t, pid )
292 __field( pid_t, old_pid )
296 __assign_str(filename, bprm->filename);
297 __entry->pid = p->pid;
298 __entry->old_pid = p->pid;
301 TP_printk("filename=%s pid=%d old_pid=%d", __get_str(filename),
302 __entry->pid, __entry->old_pid)
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.
309 DECLARE_EVENT_CLASS(sched_stat_template,
311 TP_PROTO(struct task_struct *tsk, u64 delay),
316 __array( char, comm, TASK_COMM_LEN )
317 __field( pid_t, pid )
318 __field( u64, delay )
322 memcpy(__entry->comm, tsk->comm, TASK_COMM_LEN);
323 __entry->pid = tsk->pid;
324 __entry->delay = delay;
330 TP_printk("comm=%s pid=%d delay=%Lu [ns]",
331 __entry->comm, __entry->pid,
332 (unsigned long long)__entry->delay)
337 * Tracepoint for accounting wait time (time the task is runnable
338 * but not actually running due to scheduler contention).
340 DEFINE_EVENT(sched_stat_template, sched_stat_wait,
341 TP_PROTO(struct task_struct *tsk, u64 delay),
342 TP_ARGS(tsk, delay));
345 * Tracepoint for accounting sleep time (time the task is not runnable,
346 * including iowait, see below).
348 DEFINE_EVENT(sched_stat_template, sched_stat_sleep,
349 TP_PROTO(struct task_struct *tsk, u64 delay),
350 TP_ARGS(tsk, delay));
353 * Tracepoint for accounting iowait time (time the task is not runnable
354 * due to waiting on IO to complete).
356 DEFINE_EVENT(sched_stat_template, sched_stat_iowait,
357 TP_PROTO(struct task_struct *tsk, u64 delay),
358 TP_ARGS(tsk, delay));
361 * Tracepoint for accounting blocked time (time the task is in uninterruptible).
363 DEFINE_EVENT(sched_stat_template, sched_stat_blocked,
364 TP_PROTO(struct task_struct *tsk, u64 delay),
365 TP_ARGS(tsk, delay));
368 * Tracepoint for accounting runtime (time the task is executing
371 TRACE_EVENT(sched_stat_runtime,
373 TP_PROTO(struct task_struct *tsk, u64 runtime, u64 vruntime),
375 TP_ARGS(tsk, runtime, vruntime),
378 __array( char, comm, TASK_COMM_LEN )
379 __field( pid_t, pid )
380 __field( u64, runtime )
381 __field( u64, vruntime )
385 memcpy(__entry->comm, tsk->comm, TASK_COMM_LEN);
386 __entry->pid = tsk->pid;
387 __entry->runtime = runtime;
388 __entry->vruntime = vruntime;
391 __perf_count(runtime);
394 TP_printk("comm=%s pid=%d runtime=%Lu [ns] vruntime=%Lu [ns]",
395 __entry->comm, __entry->pid,
396 (unsigned long long)__entry->runtime,
397 (unsigned long long)__entry->vruntime)
401 * Tracepoint for showing priority inheritance modifying a tasks
404 TRACE_EVENT(sched_pi_setprio,
406 TP_PROTO(struct task_struct *tsk, int newprio),
408 TP_ARGS(tsk, newprio),
411 __array( char, comm, TASK_COMM_LEN )
412 __field( pid_t, pid )
413 __field( int, oldprio )
414 __field( int, newprio )
418 memcpy(__entry->comm, tsk->comm, TASK_COMM_LEN);
419 __entry->pid = tsk->pid;
420 __entry->oldprio = tsk->prio;
421 __entry->newprio = newprio;
424 TP_printk("comm=%s pid=%d oldprio=%d newprio=%d",
425 __entry->comm, __entry->pid,
426 __entry->oldprio, __entry->newprio)
429 #endif /* _TRACE_SCHED_H */
431 /* This part must be outside protection */
432 #include <trace/define_trace.h>