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+.\"     $NetBSD: lock.9,v 1.29 2008/04/30 13:10:58 martin Exp $
+.\"
+.\" Copyright (c) 2000, 2007, 2008 The NetBSD Foundation, Inc.
+.\" All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
+.\" ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+.\" TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+.\" PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
+.\" BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+.\" CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+.\" SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+.\" INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+.\" CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+.\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+.\" POSSIBILITY OF SUCH DAMAGE.
+.\"
+.Dd January 30, 2008
+.Dt LOCK 9
+.Os
+.Sh NAME
+.Nm lock ,
+.Nm simple_lock_init ,
+.Nm simple_lock ,
+.Nm simple_lock_try ,
+.Nm simple_unlock ,
+.Nm simple_lock_freecheck ,
+.Nm simple_lock_dump ,
+.Nm lockinit ,
+.Nm lockmgr ,
+.Nm lockstatus ,
+.Nm lockmgr_printinfo ,
+.Nm spinlockinit ,
+.Nm spinlockmgr
+.Nd kernel lock functions
+.Sh DESCRIPTION
+These interfaces have been obsoleted and removed from the system.
+.Pp
+Please see the
+.Xr condvar 9 ,
+.Xr mutex 9 ,
+and
+.Xr rwlock 9
+manual pages for information on kernel synchronisation primitives.
+.Sh SEE ALSO
+.Xr condvar 9 ,
+.Xr mutex 9 ,
+.Xr rwlock 9
+.Sh HISTORY
+The kernel locking API first appeared in
+.Bx 4.4 Ns -lite2 ,
+and was replaced in
+.Nx 5.0 .