1 | /* $NetBSD: uvm_aobj.h,v 1.23 2013/10/18 17:48:44 christos Exp $ */ |
2 | |
3 | /* |
4 | * Copyright (c) 1998 Chuck Silvers, Charles D. Cranor and |
5 | * Washington University. |
6 | * All rights reserved. |
7 | * |
8 | * Redistribution and use in source and binary forms, with or without |
9 | * modification, are permitted provided that the following conditions |
10 | * are met: |
11 | * 1. Redistributions of source code must retain the above copyright |
12 | * notice, this list of conditions and the following disclaimer. |
13 | * 2. Redistributions in binary form must reproduce the above copyright |
14 | * notice, this list of conditions and the following disclaimer in the |
15 | * documentation and/or other materials provided with the distribution. |
16 | * |
17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
27 | * |
28 | * from: Id: uvm_aobj.h,v 1.1.2.4 1998/02/06 05:19:28 chs Exp |
29 | */ |
30 | /* |
31 | * uvm_aobj.h: anonymous memory uvm_object pager |
32 | * |
33 | * author: Chuck Silvers <chuq@chuq.com> |
34 | * started: Jan-1998 |
35 | * |
36 | * - design mostly from Chuck Cranor |
37 | */ |
38 | |
39 | #ifndef _UVM_UVM_AOBJ_H_ |
40 | #define _UVM_UVM_AOBJ_H_ |
41 | |
42 | /* |
43 | * Flags for uao_create: UAO_FLAG_KERNOBJ and UAO_FLAG_KERNSWAP are |
44 | * used only once, to initialise UVM. |
45 | */ |
46 | #define UAO_FLAG_KERNOBJ 0x1 /* create kernel object */ |
47 | #define UAO_FLAG_KERNSWAP 0x2 /* enable kernel swap */ |
48 | #define UAO_FLAG_NOSWAP 0x8 /* aobj may not swap */ |
49 | |
50 | #ifdef _KERNEL |
51 | #if defined(_KERNEL_OPT) |
52 | #include "opt_vmswap.h" |
53 | #endif |
54 | |
55 | void uao_init(void); |
56 | int uao_set_swslot(struct uvm_object *, int, int); |
57 | |
58 | #if defined(VMSWAP) |
59 | int uao_find_swslot(struct uvm_object *, int); |
60 | void uao_dropswap(struct uvm_object *, int); |
61 | bool uao_swap_off(int, int); |
62 | void uao_dropswap_range(struct uvm_object *, voff_t, voff_t); |
63 | #else |
64 | #define uao_find_swslot(obj, off) (__USE(off), 0) |
65 | #define uao_dropswap(obj, off) /* nothing */ |
66 | #define uao_dropswap_range(obj, lo, hi) /* nothing */ |
67 | #endif |
68 | |
69 | #endif /* _KERNEL */ |
70 | |
71 | #endif /* _UVM_UVM_AOBJ_H_ */ |
72 | |