Function sched_userret_slowpath

freebsd/kern/sched_ule.c:2387–2396

* Fix priorities on return to user-space. Priorities may be elevated due * to static priorities in msleep() or similar. */

 * to static priorities in msleep() or similar.
 */
void
sched_userret_slowpath(struct thread *td)
{

	thread_lock(td);
	td->td_priority = td->td_user_pri;
	td->td_base_pri = td->td_user_pri;
	tdq_setlowpri(TDQ_SELF(), td);
	thread_unlock(td);
}

/*
 * Handle a stathz tick.  This is really only relevant for timeshare