xref: /openbsd/sys/uvm/uvm_swap.h (revision 2bb3cc69)
1 /*	$OpenBSD: uvm_swap.h,v 1.13 2010/07/01 19:48:05 oga Exp $	*/
2 /*	$NetBSD: uvm_swap.h,v 1.5 2000/01/11 06:57:51 chs Exp $	*/
3 
4 /*
5  * Copyright (c) 1997 Matthew R. Green
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  * 3. The name of the author may not be used to endorse or promote products
17  *    derived from this software without specific prior written permission.
18  *
19  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
20  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
21  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
22  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
23  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
24  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
25  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
26  * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
27  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29  * SUCH DAMAGE.
30  *
31  * from: Id: uvm_swap.h,v 1.1.2.6 1997/12/15 05:39:31 mrg Exp
32  */
33 
34 #ifndef _UVM_UVM_SWAP_H_
35 #define _UVM_UVM_SWAP_H_
36 
37 #define	SWSLOT_BAD	(-1)
38 
39 #ifdef _KERNEL
40 
41 int			uvm_swap_get(struct vm_page *, int, int);
42 int			uvm_swap_put(int, struct vm_page **, int, int);
43 int			uvm_swap_alloc(int *, boolean_t);
44 void			uvm_swap_free(int, int);
45 void			uvm_swap_markbad(int, int);
46 void			uvm_swap_freepages(struct vm_page **, int);
47 #ifdef UVM_SWAP_ENCRYPT
48 void			uvm_swap_initcrypt_all(void);
49 void			uvm_swap_finicrypt_all(void);
50 #endif
51 
52 #endif /* _KERNEL */
53 
54 #endif /* _UVM_UVM_SWAP_H_ */
55