1 | /* $NetBSD: uvm_swap.h,v 1.22 2015/07/30 10:25:49 christos Exp $ */ |
2 | |
3 | /* |
4 | * Copyright (c) 1997 Matthew R. Green |
5 | * All rights reserved. |
6 | * |
7 | * Redistribution and use in source and binary forms, with or without |
8 | * modification, are permitted provided that the following conditions |
9 | * are met: |
10 | * 1. Redistributions of source code must retain the above copyright |
11 | * notice, this list of conditions and the following disclaimer. |
12 | * 2. Redistributions in binary form must reproduce the above copyright |
13 | * notice, this list of conditions and the following disclaimer in the |
14 | * documentation and/or other materials provided with the distribution. |
15 | * |
16 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
17 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
18 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
19 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
20 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, |
21 | * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
22 | * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED |
23 | * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
24 | * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
25 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
26 | * SUCH DAMAGE. |
27 | * |
28 | * from: Id: uvm_swap.h,v 1.1.2.6 1997/12/15 05:39:31 mrg Exp |
29 | */ |
30 | |
31 | #ifndef _UVM_UVM_SWAP_H_ |
32 | #define _UVM_UVM_SWAP_H_ |
33 | |
34 | #define SWSLOT_BAD (-1) |
35 | |
36 | #if defined(_KERNEL) || defined(_MODULE) |
37 | #if defined(_KERNEL_OPT) |
38 | #include "opt_vmswap.h" |
39 | #endif |
40 | |
41 | struct swapent; |
42 | struct lwp; |
43 | |
44 | #if defined(VMSWAP) |
45 | int uvm_swap_get(struct vm_page *, int, int); |
46 | int uvm_swap_put(int, struct vm_page **, int, int); |
47 | int uvm_swap_alloc(int *, bool); |
48 | void uvm_swap_free(int, int); |
49 | void uvm_swap_markbad(int, int); |
50 | bool uvm_swapisfull(void); |
51 | void swapsys_lock(krw_t); |
52 | void swapsys_unlock(void); |
53 | void uvm_swap_stats(int, struct swapent *, int, register_t *); |
54 | |
55 | #else /* defined(VMSWAP) */ |
56 | #define uvm_swapisfull() true |
57 | #define uvm_swap_stats(c, sep, count, retval) { *retval = 0; } |
58 | #endif /* defined(VMSWAP) */ |
59 | void uvm_swap_shutdown(struct lwp *); |
60 | |
61 | #endif /* _KERNEL || _MODULE */ |
62 | |
63 | #endif /* _UVM_UVM_SWAP_H_ */ |
64 | |