diff options
| -rw-r--r-- | include/trace/events/sched.h | 38 | ||||
| -rw-r--r-- | kernel/sched/core.c | 2 |
2 files changed, 40 insertions, 0 deletions
diff --git a/include/trace/events/sched.h b/include/trace/events/sched.h index d34eba74af27..f6ce9e64c46c 100644 --- a/include/trace/events/sched.h +++ b/include/trace/events/sched.h @@ -51,6 +51,44 @@ TRACE_EVENT(sched_kthread_stop_ret, ); /* + * Tracepoint for task enqueue/dequeue: + */ +TRACE_EVENT(sched_enq_deq_task, + + TP_PROTO(struct task_struct *p, int enqueue), + + TP_ARGS(p, enqueue), + + TP_STRUCT__entry( + __array( char, comm, TASK_COMM_LEN ) + __field( pid_t, pid ) + __field( int, prio ) + __field( int, cpu ) + __field( int, enqueue ) + __field(unsigned int, nr_running ) + __field(unsigned long, cpu_load ) + __field(unsigned int, rt_nr_running ) + ), + + TP_fast_assign( + memcpy(__entry->comm, p->comm, TASK_COMM_LEN); + __entry->pid = p->pid; + __entry->prio = p->prio; + __entry->cpu = task_cpu(p); + __entry->enqueue = enqueue; + __entry->nr_running = task_rq(p)->nr_running; + __entry->cpu_load = task_rq(p)->cpu_load[0]; + __entry->rt_nr_running = task_rq(p)->rt.rt_nr_running; + ), + + TP_printk("cpu=%d %s comm=%s pid=%d prio=%d nr_running=%u cpu_load=%lu rt_nr_running=%u", + __entry->cpu, __entry->enqueue ? "enqueue" : "dequeue", + __entry->comm, __entry->pid, + __entry->prio, __entry->nr_running, + __entry->cpu_load, __entry->rt_nr_running) +); + +/* * Tracepoint for waking up a task: */ DECLARE_EVENT_CLASS(sched_wakeup_template, diff --git a/kernel/sched/core.c b/kernel/sched/core.c index daababd6b211..3d06045706c6 100644 --- a/kernel/sched/core.c +++ b/kernel/sched/core.c @@ -852,6 +852,7 @@ static inline void enqueue_task(struct rq *rq, struct task_struct *p, int flags) if (!(flags & ENQUEUE_RESTORE)) sched_info_queued(rq, p); p->sched_class->enqueue_task(rq, p, flags); + trace_sched_enq_deq_task(p, 1); } static inline void dequeue_task(struct rq *rq, struct task_struct *p, int flags) @@ -860,6 +861,7 @@ static inline void dequeue_task(struct rq *rq, struct task_struct *p, int flags) if (!(flags & DEQUEUE_SAVE)) sched_info_dequeued(rq, p); p->sched_class->dequeue_task(rq, p, flags); + trace_sched_enq_deq_task(p, 0); } void activate_task(struct rq *rq, struct task_struct *p, int flags) |