extern void cv_broadcast(kcondvar_t *cv);
#define cv_timedwait_interruptible(cv, mp, at) cv_timedwait(cv, mp, at)
#define cv_wait_interruptible(cv, mp) cv_wait(cv, mp)
+#define cv_wait_io(cv, mp) cv_wait(cv, mp)
/*
* kstat creation, installation and deletion