sched: clean up tracepoints

DEFINE_TRACE(sched_kthread_stop,

	TPPROTO(struct task_struct *t),

		TPARGS(t));

DEFINE_TRACE(sched_kthread_stop_ret,

	TPPROTO(int ret),

		TPARGS(ret));

DEFINE_TRACE(sched_wait_task,

	TPPROTO(struct rq *rq, struct task_struct *p),

		TPARGS(rq, p));

DEFINE_TRACE(sched_wakeup,

	TPPROTO(struct rq *rq, struct task_struct *p),

		TPARGS(rq, p));

DEFINE_TRACE(sched_wakeup_new,

	TPPROTO(struct rq *rq, struct task_struct *p),

		TPARGS(rq, p));

DEFINE_TRACE(sched_switch,

	TPPROTO(struct rq *rq, struct task_struct *prev,

		struct task_struct *next),

		TPARGS(rq, prev, next));

DEFINE_TRACE(sched_migrate_task,

	TPPROTO(struct rq *rq, struct task_struct *p, int dest_cpu),

		TPARGS(rq, p, dest_cpu));

DEFINE_TRACE(sched_process_free,

	TPPROTO(struct task_struct *p),

		TPARGS(p));

DEFINE_TRACE(sched_process_exit,

	TPPROTO(struct task_struct *p),

		TPARGS(p));

DEFINE_TRACE(sched_process_wait,

	TPPROTO(struct pid *pid),

		TPARGS(pid));

DEFINE_TRACE(sched_process_fork,

	TPPROTO(struct task_struct *parent, struct task_struct *child),

		TPARGS(parent, child));

DEFINE_TRACE(sched_signal_send,

	TPPROTO(int sig, struct task_struct *p),

		TPARGS(sig, p));