diff --git a/lib/librt/sched.3 b/lib/librt/sched.3
index 8e53bc1c2fc8..1b6f09a1484b 100644
--- a/lib/librt/sched.3
+++ b/lib/librt/sched.3
@@ -1,4 +1,4 @@
-.\"	$NetBSD: sched.3,v 1.5 2008/06/22 08:24:26 wiz Exp $
+.\"	$NetBSD: sched.3,v 1.6 2008/10/31 11:55:40 rmind Exp $
 .\"
 .\" Copyright (c) 2008 The NetBSD Foundation, Inc.
 .\" All rights reserved.
@@ -27,7 +27,7 @@
 .\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 .\" POSSIBILITY OF SUCH DAMAGE.
 .\"
-.Dd June 16, 2008
+.Dd October 31, 2008
 .Dt SCHED 3
 .Os
 .Sh NAME
@@ -83,7 +83,7 @@ contains at least one member:
 .It Fa sched_priority
 Specifies the priority of the process.
 .El
-.Ss FUNCTIONS
+.Sh FUNCTIONS
 .Bl -tag -width compact
 .It Fn sched_setparam pid param
 Sets the scheduling parameters for the process specified by
@@ -135,6 +135,17 @@ scheduling policy.
 .It Fn sched_yield
 Yields a processor voluntarily and gives other threads a chance to run
 without waiting for an involuntary preemptive switch.
+.It Fn sched_setaffinity_np pid size cpuset
+Set the affinity mask specified by
+.Fa cpuset
+for the process specified by
+.Fa pid .
+At least one valid CPU must be set in the mask.
+.It Fn sched_getaffinity_np pid size cpuset
+Get the affinity mask of the process specified by
+.Fa pid
+into the
+.Fa cpuset .
 .El
 .Sh RETURN VALUES
 .Fn sched_setparam ,
@@ -167,6 +178,15 @@ return the maximal/minimal priority value on success.
 Otherwise, \-1 is returned and
 .Va errno
 is set to indicate the error.
+.Pp
+The
+.Fn sched_setaffinity_np
+and
+.Fn sched_getaffinity_np
+return 0 on success.
+Otherwise, \-1 is returned and
+.Va errno
+is set to indicate the error.
 .Sh ERRORS
 The
 .Fn sched_setparam
@@ -224,13 +244,23 @@ and value of
 .Fa pid
 is not zero.
 .El
+.Sh NOTES
+Portable applications should not use
+.Fn sched_setaffinity_np
+and
+.Fn sched_getaffinity_np
+functions.
 .Sh SEE ALSO
 .Xr affinity 3 ,
 .Xr cpuset 3 ,
 .Xr pset 3 ,
 .Xr schedctl 8
 .Sh STANDARDS
-These functions conform to
+These functions, except
+.Fn sched_setaffinity_np
+and
+.Fn sched_getaffinity_np ,
+are expected to conform the
 .St -p1003.1-2001
 standard.
 .Sh HISTORY