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>
11 * Tracepoint for calling kthread_stop, performed to end a kthread:
13 TRACE_EVENT(sched_kthread_stop,
15 TP_PROTO(struct task_struct *t),
20 __array( char, comm, TASK_COMM_LEN )
25 memcpy(__entry->comm, t->comm, TASK_COMM_LEN);
26 __entry->pid = t->pid;
29 TP_printk("comm=%s pid=%d", __entry->comm, __entry->pid)
33 * Tracepoint for the return value of the kthread stopping:
35 TRACE_EVENT(sched_kthread_stop_ret,
49 TP_printk("ret=%d", __entry->ret)
53 * Tracepoint for waiting on task to unschedule:
55 TRACE_EVENT(sched_wait_task,
57 TP_PROTO(struct task_struct *p),
62 __array( char, comm, TASK_COMM_LEN )
68 memcpy(__entry->comm, p->comm, TASK_COMM_LEN);
69 __entry->pid = p->pid;
70 __entry->prio = p->prio;
73 TP_printk("comm=%s pid=%d prio=%d",
74 __entry->comm, __entry->pid, __entry->prio)
78 * Tracepoint for waking up a task:
80 DECLARE_EVENT_CLASS(sched_wakeup_template,
82 TP_PROTO(struct task_struct *p, int success),
87 __array( char, comm, TASK_COMM_LEN )
90 __field( int, success )
91 __field( int, target_cpu )
95 memcpy(__entry->comm, p->comm, TASK_COMM_LEN);
96 __entry->pid = p->pid;
97 __entry->prio = p->prio;
98 __entry->success = success;
99 __entry->target_cpu = task_cpu(p);
102 TP_printk("comm=%s pid=%d prio=%d success=%d target_cpu=%03d",
103 __entry->comm, __entry->pid, __entry->prio,
104 __entry->success, __entry->target_cpu)
107 DEFINE_EVENT(sched_wakeup_template, sched_wakeup,
108 TP_PROTO(struct task_struct *p, int success),
109 TP_ARGS(p, success));
112 * Tracepoint for waking up a new task:
114 DEFINE_EVENT(sched_wakeup_template, sched_wakeup_new,
115 TP_PROTO(struct task_struct *p, int success),
116 TP_ARGS(p, success));
119 * Tracepoint for task switches, performed by the scheduler:
121 TRACE_EVENT(sched_switch,
123 TP_PROTO(struct task_struct *prev,
124 struct task_struct *next),
129 __array( char, prev_comm, TASK_COMM_LEN )
130 __field( pid_t, prev_pid )
131 __field( int, prev_prio )
132 __field( long, prev_state )
133 __array( char, next_comm, TASK_COMM_LEN )
134 __field( pid_t, next_pid )
135 __field( int, next_prio )
139 memcpy(__entry->next_comm, next->comm, TASK_COMM_LEN);
140 __entry->prev_pid = prev->pid;
141 __entry->prev_prio = prev->prio;
142 __entry->prev_state = prev->state;
143 memcpy(__entry->prev_comm, prev->comm, TASK_COMM_LEN);
144 __entry->next_pid = next->pid;
145 __entry->next_prio = next->prio;
148 TP_printk("prev_comm=%s prev_pid=%d prev_prio=%d prev_state=%s ==> next_comm=%s next_pid=%d next_prio=%d",
149 __entry->prev_comm, __entry->prev_pid, __entry->prev_prio,
150 __entry->prev_state ?
151 __print_flags(__entry->prev_state, "|",
152 { 1, "S"} , { 2, "D" }, { 4, "T" }, { 8, "t" },
153 { 16, "Z" }, { 32, "X" }, { 64, "x" },
155 __entry->next_comm, __entry->next_pid, __entry->next_prio)
159 * Tracepoint for a task being migrated:
161 TRACE_EVENT(sched_migrate_task,
163 TP_PROTO(struct task_struct *p, int dest_cpu),
165 TP_ARGS(p, dest_cpu),
168 __array( char, comm, TASK_COMM_LEN )
169 __field( pid_t, pid )
171 __field( int, orig_cpu )
172 __field( int, dest_cpu )
176 memcpy(__entry->comm, p->comm, TASK_COMM_LEN);
177 __entry->pid = p->pid;
178 __entry->prio = p->prio;
179 __entry->orig_cpu = task_cpu(p);
180 __entry->dest_cpu = dest_cpu;
183 TP_printk("comm=%s pid=%d prio=%d orig_cpu=%d dest_cpu=%d",
184 __entry->comm, __entry->pid, __entry->prio,
185 __entry->orig_cpu, __entry->dest_cpu)
188 DECLARE_EVENT_CLASS(sched_process_template,
190 TP_PROTO(struct task_struct *p),
195 __array( char, comm, TASK_COMM_LEN )
196 __field( pid_t, pid )
201 memcpy(__entry->comm, p->comm, TASK_COMM_LEN);
202 __entry->pid = p->pid;
203 __entry->prio = p->prio;
206 TP_printk("comm=%s pid=%d prio=%d",
207 __entry->comm, __entry->pid, __entry->prio)
211 * Tracepoint for freeing a task:
213 DEFINE_EVENT(sched_process_template, sched_process_free,
214 TP_PROTO(struct task_struct *p),
219 * Tracepoint for a task exiting:
221 DEFINE_EVENT(sched_process_template, sched_process_exit,
222 TP_PROTO(struct task_struct *p),
226 * Tracepoint for a waiting task:
228 TRACE_EVENT(sched_process_wait,
230 TP_PROTO(struct pid *pid),
235 __array( char, comm, TASK_COMM_LEN )
236 __field( pid_t, pid )
241 memcpy(__entry->comm, current->comm, TASK_COMM_LEN);
242 __entry->pid = pid_nr(pid);
243 __entry->prio = current->prio;
246 TP_printk("comm=%s pid=%d prio=%d",
247 __entry->comm, __entry->pid, __entry->prio)
251 * Tracepoint for do_fork:
253 TRACE_EVENT(sched_process_fork,
255 TP_PROTO(struct task_struct *parent, struct task_struct *child),
257 TP_ARGS(parent, child),
260 __array( char, parent_comm, TASK_COMM_LEN )
261 __field( pid_t, parent_pid )
262 __array( char, child_comm, TASK_COMM_LEN )
263 __field( pid_t, child_pid )
267 memcpy(__entry->parent_comm, parent->comm, TASK_COMM_LEN);
268 __entry->parent_pid = parent->pid;
269 memcpy(__entry->child_comm, child->comm, TASK_COMM_LEN);
270 __entry->child_pid = child->pid;
273 TP_printk("comm=%s pid=%d child_comm=%s child_pid=%d",
274 __entry->parent_comm, __entry->parent_pid,
275 __entry->child_comm, __entry->child_pid)
279 * XXX the below sched_stat tracepoints only apply to SCHED_OTHER/BATCH/IDLE
280 * adding sched_stat support to SCHED_FIFO/RR would be welcome.
282 DECLARE_EVENT_CLASS(sched_stat_template,
284 TP_PROTO(struct task_struct *tsk, u64 delay),
289 __array( char, comm, TASK_COMM_LEN )
290 __field( pid_t, pid )
291 __field( u64, delay )
295 memcpy(__entry->comm, tsk->comm, TASK_COMM_LEN);
296 __entry->pid = tsk->pid;
297 __entry->delay = delay;
303 TP_printk("comm=%s pid=%d delay=%Lu [ns]",
304 __entry->comm, __entry->pid,
305 (unsigned long long)__entry->delay)
310 * Tracepoint for accounting wait time (time the task is runnable
311 * but not actually running due to scheduler contention).
313 DEFINE_EVENT(sched_stat_template, sched_stat_wait,
314 TP_PROTO(struct task_struct *tsk, u64 delay),
315 TP_ARGS(tsk, delay));
318 * Tracepoint for accounting sleep time (time the task is not runnable,
319 * including iowait, see below).
321 DEFINE_EVENT(sched_stat_template, sched_stat_sleep,
322 TP_PROTO(struct task_struct *tsk, u64 delay),
323 TP_ARGS(tsk, delay));
326 * Tracepoint for accounting iowait time (time the task is not runnable
327 * due to waiting on IO to complete).
329 DEFINE_EVENT(sched_stat_template, sched_stat_iowait,
330 TP_PROTO(struct task_struct *tsk, u64 delay),
331 TP_ARGS(tsk, delay));
334 * Tracepoint for accounting runtime (time the task is executing
337 TRACE_EVENT(sched_stat_runtime,
339 TP_PROTO(struct task_struct *tsk, u64 runtime, u64 vruntime),
341 TP_ARGS(tsk, runtime, vruntime),
344 __array( char, comm, TASK_COMM_LEN )
345 __field( pid_t, pid )
346 __field( u64, runtime )
347 __field( u64, vruntime )
351 memcpy(__entry->comm, tsk->comm, TASK_COMM_LEN);
352 __entry->pid = tsk->pid;
353 __entry->runtime = runtime;
354 __entry->vruntime = vruntime;
357 __perf_count(runtime);
360 TP_printk("comm=%s pid=%d runtime=%Lu [ns] vruntime=%Lu [ns]",
361 __entry->comm, __entry->pid,
362 (unsigned long long)__entry->runtime,
363 (unsigned long long)__entry->vruntime)
366 #endif /* _TRACE_SCHED_H */
368 /* This part must be outside protection */
369 #include <trace/define_trace.h>