diff --git a/sys/kern/kern_condvar.c b/sys/kern/kern_condvar.c
index cf7dbff10414..07ed3b733fcd 100644
--- a/sys/kern/kern_condvar.c
+++ b/sys/kern/kern_condvar.c
@@ -491,26 +491,6 @@ cv_signal(struct cv *cvp)
 	mtx_unlock_spin(&sched_lock);
 }
 
-/*
- * Signal a condition variable, dropping the passed in mutex before waking
- * a waiting process.
- */
-void
-cv_signal_drop(struct cv *cvp, struct mtx *mp)
-{
-
-	KASSERT(cvp != NULL, ("%s: cvp NULL", __FUNCTION__));
-	KASSERT(mp != NULL, ("%s: mp NULL", __FUNCTION__));
-	mtx_assert(mp, MA_OWNED | MA_NOTRECURSED);
-	mtx_lock_spin(&sched_lock);
-	mtx_unlock_flags(mp, MTX_NOSWITCH);
-	if (!TAILQ_EMPTY(&cvp->cv_waitq)) {
-		CV_SIGNAL_VALIDATE(cvp);
-		cv_wakeup(cvp);
-	}
-	mtx_unlock_spin(&sched_lock);
-}
-
 /*
  * Broadcast a signal to a condition variable.  Wakes up all waiting processes.
  * Should be called with the same mutex as was passed to cv_wait held.
@@ -527,25 +507,6 @@ cv_broadcast(struct cv *cvp)
 	mtx_unlock_spin(&sched_lock);
 }
 
-/*
- * Broadcast a signal to a condition variable, dropping the passed in mutex
- * before waking any waiting processes.
- */
-void
-cv_broadcast_drop(struct cv *cvp, struct mtx *mp)
-{
-
-	KASSERT(cvp != NULL, ("%s: cvp NULL", __FUNCTION__));
-	KASSERT(mp != NULL, ("%s: mp NULL", __FUNCTION__));
-	mtx_assert(mp, MA_OWNED | MA_NOTRECURSED);
-	mtx_lock_spin(&sched_lock);
-	mtx_unlock_flags(mp, MTX_NOSWITCH);
-	CV_SIGNAL_VALIDATE(cvp);
-	while (!TAILQ_EMPTY(&cvp->cv_waitq))
-		cv_wakeup(cvp);
-	mtx_unlock_spin(&sched_lock);
-}
-
 /*
  * Remove a process from the wait queue of its condition variable.  This may be
  * called externally.
diff --git a/sys/kern/kern_synch.c b/sys/kern/kern_synch.c
index 7d55f6756ab4..530b67ed1d5d 100644
--- a/sys/kern/kern_synch.c
+++ b/sys/kern/kern_synch.c
@@ -709,21 +709,16 @@ unsleep(p)
 }
 
 /*
- * Make all processes sleeping on the specified identifier runnable.  If
- * non-NULL, the specified mutex is dropped before any processes are made
- * runnable.
+ * Make all processes sleeping on the specified identifier runnable.
  */
 void
-mwakeup(ident, mtx)
+wakeup(ident)
 	register void *ident;
-	register struct mtx *mtx;
 {
 	register struct slpquehead *qp;
 	register struct proc *p;
 
 	mtx_lock_spin(&sched_lock);
-	if (mtx != NULL)
-		mtx_unlock_flags(mtx, MTX_NOSWITCH);
 	qp = &slpque[LOOKUP(ident)];
 restart:
 	TAILQ_FOREACH(p, qp, p_slpq) {
@@ -756,20 +751,16 @@ mwakeup(ident, mtx)
 /*
  * Make a process sleeping on the specified identifier runnable.
  * May wake more than one process if a target process is currently
- * swapped out.  If non-NULL, the specified mutex is dropped before
- * a process is made runnable.
+ * swapped out.
  */
 void
-mwakeup_one(ident, mtx)
+wakeup_one(ident)
 	register void *ident;
-	register struct mtx *mtx;
 {
 	register struct slpquehead *qp;
 	register struct proc *p;
 
 	mtx_lock_spin(&sched_lock);
-	if (mtx != NULL)
-		mtx_unlock_flags(mtx, MTX_NOSWITCH);
 	qp = &slpque[LOOKUP(ident)];
 
 	TAILQ_FOREACH(p, qp, p_slpq) {
diff --git a/sys/sys/condvar.h b/sys/sys/condvar.h
index 903d6353a008..5460024a748f 100644
--- a/sys/sys/condvar.h
+++ b/sys/sys/condvar.h
@@ -59,9 +59,7 @@ int	cv_timedwait(struct cv *cvp, struct mtx *mp, int timo);
 int	cv_timedwait_sig(struct cv *cvp, struct mtx *mp, int timo);
 
 void	cv_signal(struct cv *cvp);
-void	cv_signal_drop(struct cv *cvp, struct mtx *mp);
 void	cv_broadcast(struct cv *cvp);
-void	cv_broadcast_drop(struct cv *cvp, struct mtx *mp);
 
 void	cv_waitq_remove(struct proc *p);
 
diff --git a/sys/sys/systm.h b/sys/sys/systm.h
index c238f3f2acf0..aa95807856fc 100644
--- a/sys/sys/systm.h
+++ b/sys/sys/systm.h
@@ -259,10 +259,8 @@ int	msleep __P((void *chan, struct mtx *mtx, int pri, const char *wmesg,
 int	asleep __P((void *chan, int pri, const char *wmesg, int timo));
 #define await(pri, timo)		mawait(NULL, pri, timo)
 int	mawait  __P((struct mtx *mtx, int pri, int timo));
-void	mwakeup __P((void *chan, struct mtx *mtx));
-#define	wakeup(chan)			mwakeup(chan, NULL)
-void	mwakeup_one __P((void *chan, struct mtx *mtx));
-#define	wakeup_one(chan)		mwakeup_one(chan, NULL)
+void	wakeup __P((void *chan));
+void	wakeup_one __P((void *chan));
 
 /*
  * Common `dev_t' stuff are declared here to avoid #include poisoning