Annotation of sys/uvm/uvm_user.c, Revision 1.1.1.1
1.1 nbrk 1: /* $OpenBSD: uvm_user.c,v 1.11 2007/04/27 17:01:54 art Exp $ */
2: /* $NetBSD: uvm_user.c,v 1.8 2000/06/27 17:29:37 mrg Exp $ */
3:
4: /*
5: *
6: * Copyright (c) 1997 Charles D. Cranor and Washington University.
7: * All rights reserved.
8: *
9: * Redistribution and use in source and binary forms, with or without
10: * modification, are permitted provided that the following conditions
11: * are met:
12: * 1. Redistributions of source code must retain the above copyright
13: * notice, this list of conditions and the following disclaimer.
14: * 2. Redistributions in binary form must reproduce the above copyright
15: * notice, this list of conditions and the following disclaimer in the
16: * documentation and/or other materials provided with the distribution.
17: * 3. All advertising materials mentioning features or use of this software
18: * must display the following acknowledgement:
19: * This product includes software developed by Charles D. Cranor and
20: * Washington University.
21: * 4. The name of the author may not be used to endorse or promote products
22: * derived from this software without specific prior written permission.
23: *
24: * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
25: * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
26: * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
27: * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
28: * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
29: * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
30: * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
31: * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
32: * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
33: * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
34: *
35: * from: Id: uvm_user.c,v 1.1.2.1 1997/08/14 19:10:41 chuck Exp
36: */
37:
38: /*
39: * uvm_user.c: high level uvm_allocate/uvm_deallocate interface into vm.
40: */
41:
42:
43: #include <sys/param.h>
44: #include <sys/systm.h>
45: #include <sys/proc.h>
46:
47: #include <uvm/uvm.h>
48:
49: /*
50: * uvm_deallocate: deallocate memory (unmap)
51: */
52:
53: void
54: uvm_deallocate(struct vm_map *map, vaddr_t start, vsize_t size)
55: {
56:
57: if (map == NULL)
58: panic("uvm_deallocate with null map");
59:
60: if (size == 0)
61: return;
62:
63: uvm_unmap(map, trunc_page(start), round_page(start+size));
64: }
CVSweb