Annotation of sys/uvm/uvm_aobj.h, Revision 1.1.1.1
1.1 nbrk 1: /* $OpenBSD: uvm_aobj.h,v 1.8 2002/03/14 01:27:18 millert Exp $ */
2: /* $NetBSD: uvm_aobj.h,v 1.10 2000/01/11 06:57:49 chs Exp $ */
3:
4: /*
5: * Copyright (c) 1998 Chuck Silvers, Charles D. Cranor and
6: * 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_aobj.h,v 1.1.2.4 1998/02/06 05:19:28 chs Exp
36: */
37: /*
38: * uvm_aobj.h: anonymous memory uvm_object pager
39: *
40: * author: Chuck Silvers <chuq@chuq.com>
41: * started: Jan-1998
42: *
43: * - design mostly from Chuck Cranor
44: */
45:
46: #ifndef _UVM_UVM_AOBJ_H_
47: #define _UVM_UVM_AOBJ_H_
48:
49: /*
50: * flags
51: */
52:
53: /* flags for uao_create: can only be used one time (at bootup) */
54: #define UAO_FLAG_KERNOBJ 0x1 /* create kernel object */
55: #define UAO_FLAG_KERNSWAP 0x2 /* enable kernel swap */
56:
57: /* internal flags */
58: #define UAO_FLAG_KILLME 0x4 /* aobj should die when last released
59: * page is no longer PG_BUSY ... */
60: #define UAO_FLAG_NOSWAP 0x8 /* aobj can't swap (kernel obj only!) */
61:
62: #ifdef _KERNEL
63:
64: /*
65: * prototypes
66: */
67:
68: void uao_init(void);
69: int uao_set_swslot(struct uvm_object *, int, int);
70: void uao_dropswap(struct uvm_object *, int);
71: int uao_swap_off(int, int);
72:
73: /*
74: * globals
75: */
76:
77: extern struct uvm_pagerops aobj_pager;
78:
79: #endif /* _KERNEL */
80:
81: #endif /* _UVM_UVM_AOBJ_H_ */
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