diff --git a/ObsoleteFiles.inc b/ObsoleteFiles.inc
index e2f431771f31..95b2e8733a02 100644
--- a/ObsoleteFiles.inc
+++ b/ObsoleteFiles.inc
@@ -38,6 +38,9 @@
 #   xargs -n1 | sort | uniq -d;
 # done
 
+# 20140922: sleepq_calc_signal_retval.9 and sleepq_catch_signals.9 removed
+OLD_FILES+=usr/share/man/man9/sleepq_calc_signal_retval.9.gz
+OLD_FILES+=usr/share/man/man9/sleepq_catch_signals.9.gz
 # 20140917: hv_kvpd rc.d script removed in favor of devd configuration
 OLD_FILES+=etc/rc.d/hv_kvpd
 # 20140814: libopie version bump
diff --git a/share/man/man9/Makefile b/share/man/man9/Makefile
index 7acc092efdc8..9e8297aa965f 100644
--- a/share/man/man9/Makefile
+++ b/share/man/man9/Makefile
@@ -1388,8 +1388,6 @@ MLINKS+=sleepqueue.9 init_sleepqueues.9 \
 	sleepqueue.9 sleepq_add.9 \
 	sleepqueue.9 sleepq_alloc.9 \
 	sleepqueue.9 sleepq_broadcast.9 \
-	sleepqueue.9 sleepq_calc_signal_retval.9 \
-	sleepqueue.9 sleepq_catch_signals.9 \
 	sleepqueue.9 sleepq_free.9 \
 	sleepqueue.9 sleepq_lookup.9 \
 	sleepqueue.9 sleepq_lock.9 \
diff --git a/share/man/man9/sleepqueue.9 b/share/man/man9/sleepqueue.9
index 8557b9f3e8e7..f09f209fc275 100644
--- a/share/man/man9/sleepqueue.9
+++ b/share/man/man9/sleepqueue.9
@@ -32,8 +32,6 @@
 .Nm sleepq_add ,
 .Nm sleepq_alloc ,
 .Nm sleepq_broadcast ,
-.Nm sleepq_calc_signal_retval ,
-.Nm sleepq_catch_signals ,
 .Nm sleepq_free ,
 .Nm sleepq_lock ,
 .Nm sleepq_lookup ,
@@ -62,10 +60,6 @@
 .Fn sleepq_alloc "void"
 .Ft int
 .Fn sleepq_broadcast "void *wchan" "int flags" "int pri" "int queue"
-.Ft int
-.Fn sleepq_calc_signal_retval "int sig"
-.Ft int
-.Fn sleepq_catch_signals "void *wchan"
 .Ft void
 .Fn sleepq_free "struct sleepqueue *sq"
 .Ft struct sleepqueue *
@@ -86,15 +80,15 @@
 .Ft u_int
 .Fn sleepq_sleepcnt "void *wchan" "int queue"
 .Ft int
-.Fn sleepq_timedwait "void *wchan"
+.Fn sleepq_timedwait "void *wchan" "int pri"
 .Ft int
-.Fn sleepq_timedwait_sig "void *wchan" "int signal_caught"
+.Fn sleepq_timedwait_sig "void *wchan" "int pri"
 .Ft int
 .Fn sleepq_type "void *wchan"
 .Ft void
-.Fn sleepq_wait "void *wchan"
+.Fn sleepq_wait "void *wchan" "int pri"
 .Ft int
-.Fn sleepq_wait_sig "void *wchan"
+.Fn sleepq_wait_sig "void *wchan" "int pri"
 .Sh DESCRIPTION
 Sleep queues provide a mechanism for suspending execution of a thread until
 some condition is met.
@@ -252,17 +246,6 @@ allows to pass additional
 .Fn callout_reset_sbt
 flags.
 .Pp
-The current thread may be marked interruptible by calling
-.Fn sleepq_catch_signals
-with
-.Fa wchan
-set to the wait channel.
-This function returns a signal number if there are any pending signals for
-the current thread and 0 if there is not a pending signal.
-The sleep queue chain associated with argument
-.Fa wchan
-should have been locked by a prior call to
-.Fn sleepq_lock .
 .Pp
 Once the thread is ready to suspend,
 one of the wait functions is called to put the current thread to sleep
@@ -289,12 +272,9 @@ The sleep queue chain associated with argument
 needs to have been locked with a prior call to
 .Fn sleepq_lock .
 The
-.Fa signal_caught
-parameter to
-.Fn sleepq_timedwait_sig
-specifies if a previous call to
-.Fn sleepq_catch_signals
-found a pending signal.
+.Fa pri
+argument is used to set the priority of the thread when it is awakened.
+If it is set to zero, the thread's priority is left alone.
 .Pp
 When the thread is resumed,
 the wait functions return a non-zero value if the thread was awakened due to
@@ -304,20 +284,6 @@ If the sleep timed out, then
 is returned.
 If the sleep was interrupted by something other than a signal,
 then some other return value will be returned.
-If zero is returned after resuming from an interruptible sleep,
-then
-.Fn sleepq_calc_signal_retval
-should be called to determine if the sleep was interrupted by a signal.
-If so,
-.Fn sleepq_calc_signal_retval
-returns
-.Er ERESTART
-if the interrupting signal is restartable and
-.Er EINTR
-otherwise.
-If the sleep was not interrupted by a signal,
-.Fn sleepq_calc_signal_retval
-will return 0.
 .Pp
 A sleeping thread is normally resumed by the
 .Fn sleepq_broadcast
diff --git a/sys/sys/sleepqueue.h b/sys/sys/sleepqueue.h
index dcb1b48141c4..cdb7a3985f2a 100644
--- a/sys/sys/sleepqueue.h
+++ b/sys/sys/sleepqueue.h
@@ -46,13 +46,6 @@
  * call sleepq_set_timeout() after sleepq_add() to setup a timeout.  It
  * should then use one of the sleepq_timedwait() functions to block.
  *
- * If the thread wants the sleep to be interruptible by signals, it can
- * call sleepq_catch_signals() after sleepq_add().  It should then use
- * one of the sleepq_wait_sig() functions to block.  After the thread has
- * been resumed, it should call sleepq_calc_signal_retval() to determine
- * if it should return EINTR or ERESTART passing in the value returned from
- * the earlier call to sleepq_catch_signals().
- *
  * A thread is normally resumed from a sleep queue by either the
  * sleepq_signal() or sleepq_broadcast() functions.  Sleepq_signal() wakes
  * the thread with the highest priority that is sleeping on the specified