Function critical_exit

freebsd/sys/systm.h:294–309

}

static __inline void
critical_exit(void)
{
#ifndef FSTACK
	struct thread_lite *td;

	td = (struct thread_lite *)curthread;
	KASSERT(td->td_critnest != 0,
	    ("critical_exit: td_critnest == 0"));
	atomic_interrupt_fence();
	td->td_critnest--;
	atomic_interrupt_fence();
	if (__predict_false(td->td_owepreempt))
		critical_exit_preempt();
#endif
}
#endif

#ifdef  EARLY_PRINTF