From 5e30665413970a88252c8e111763997c847db6f8 Mon Sep 17 00:00:00 2001
From: Sascha Wildner <swildner@dragonflybsd.org>
Date: Fri, 14 Dec 2007 23:12:55 +0000
Subject: [PATCH] Add some words about lwp_rtprio() to rtprio(2).

---
 lib/libc/sys/Makefile.inc |  3 ++-
 lib/libc/sys/rtprio.2     | 23 ++++++++++++++++++-----
 2 files changed, 20 insertions(+), 6 deletions(-)

diff --git a/lib/libc/sys/Makefile.inc b/lib/libc/sys/Makefile.inc
index 01469a6220..f943c0e436 100644
--- a/lib/libc/sys/Makefile.inc
+++ b/lib/libc/sys/Makefile.inc
@@ -1,6 +1,6 @@
 #	@(#)Makefile.inc	8.3 (Berkeley) 10/24/94
 # $FreeBSD: src/lib/libc/sys/Makefile.inc,v 1.75.2.7 2003/04/22 17:31:18 trhodes Exp $
-# $DragonFly: src/lib/libc/sys/Makefile.inc,v 1.28 2007/08/03 08:40:14 swildner Exp $
+# $DragonFly: src/lib/libc/sys/Makefile.inc,v 1.29 2007/12/14 23:12:55 swildner Exp $
 
 # sys sources
 .PATH: ${.CURDIR}/../libc/${MACHINE_ARCH}/sys ${.CURDIR}/../libc/sys
@@ -128,6 +128,7 @@ MLINKS+=mount.2 unmount.2
 MLINKS+=pathconf.2 fpathconf.2
 MLINKS+=read.2 pread.2 read.2 preadv.2 read.2 readv.2
 MLINKS+=recv.2 recvfrom.2 recv.2 recvmsg.2
+MLINKS+=rtprio.2 lwp_rtprio.2
 MLINKS+=send.2 sendmsg.2 send.2 sendto.2
 MLINKS+=setpgid.2 setpgrp.2
 MLINKS+=setresuid.2 getresgid.2 setresuid.2 getresuid.2 setresuid.2 setresgid.2
diff --git a/lib/libc/sys/rtprio.2 b/lib/libc/sys/rtprio.2
index e07182aca1..966b265995 100644
--- a/lib/libc/sys/rtprio.2
+++ b/lib/libc/sys/rtprio.2
@@ -28,14 +28,15 @@
 .\" SUCH DAMAGE.
 .\"
 .\" $FreeBSD: src/lib/libc/sys/rtprio.2,v 1.13.2.9 2001/12/14 18:34:01 ru Exp $
-.\" $DragonFly: src/lib/libc/sys/rtprio.2,v 1.5 2007/12/14 22:51:57 swildner Exp $
+.\" $DragonFly: src/lib/libc/sys/rtprio.2,v 1.6 2007/12/14 23:12:55 swildner Exp $
 .\"
-.Dd July 23, 1994
+.Dd December 14, 2007
 .Dt RTPRIO 2
 .Os
 .Sh NAME
-.Nm rtprio
-.Nd examine or modify a process realtime or idle priority
+.Nm rtprio ,
+.Nm lwp_rtprio
+.Nd examine or modify a process/lwp realtime or idle priority
 .Sh LIBRARY
 .Lb libc
 .Sh SYNOPSIS
@@ -43,6 +44,8 @@
 .In sys/rtprio.h
 .Ft int
 .Fn rtprio "int function" "pid_t pid" "struct rtprio *rtp"
+.Ft int
+.Fn lwp_rtprio "int function" "pid_t pid" "lwpid_t tid" "struct rtprio *rtp"
 .Sh DESCRIPTION
 .Fn rtprio
 is used to lookup or change the realtime or idle priority of a process.
@@ -94,10 +97,20 @@ when no other real/normal priority process is runnable.
 Higher real/idle priority processes
 preempt lower real/idle priority processes.
 Processes of equal real/idle priority are run round-robin.
+.Pp
+The
+.Fn lwp_rtprio
+function is the lwp counterpart of
+.Fn rtprio .
+It takes one additional argument,
+.Fa tid ,
+specifying the lwp to be used, -1 for the current lwp.
 .Sh RETURN VALUES
-.Rv -std rtprio
+.Rv -std rtprio lwp_rtprio
 .Sh ERRORS
 .Fn rtprio
+and
+.Fn lwp_rtprio
 will fail if
 .Bl -tag -width Er
 .It Bq Er EINVAL
-- 
2.41.0