1 | /* $NetBSD: uvm_pdaemon.h,v 1.17 2011/02/02 15:25:27 chuck Exp $ */ |
2 | |
3 | /* |
4 | * Copyright (c) 1997 Charles D. Cranor and Washington University. |
5 | * Copyright (c) 1991, 1993, The Regents of the University of California. |
6 | * |
7 | * All rights reserved. |
8 | * |
9 | * This code is derived from software contributed to Berkeley by |
10 | * The Mach Operating System project at Carnegie-Mellon University. |
11 | * |
12 | * Redistribution and use in source and binary forms, with or without |
13 | * modification, are permitted provided that the following conditions |
14 | * are met: |
15 | * 1. Redistributions of source code must retain the above copyright |
16 | * notice, this list of conditions and the following disclaimer. |
17 | * 2. Redistributions in binary form must reproduce the above copyright |
18 | * notice, this list of conditions and the following disclaimer in the |
19 | * documentation and/or other materials provided with the distribution. |
20 | * 3. Neither the name of the University nor the names of its contributors |
21 | * may be used to endorse or promote products derived from this software |
22 | * without specific prior written permission. |
23 | * |
24 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
25 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
26 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
27 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
28 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
29 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
30 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
31 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
32 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
33 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
34 | * SUCH DAMAGE. |
35 | * |
36 | * @(#)vm_pageout.h 8.2 (Berkeley) 1/12/94 |
37 | * from: Id: uvm_pdaemon.h,v 1.1.2.4 1998/02/02 20:07:20 chuck Exp |
38 | * |
39 | * |
40 | * Copyright (c) 1987, 1990 Carnegie-Mellon University. |
41 | * All rights reserved. |
42 | * |
43 | * Permission to use, copy, modify and distribute this software and |
44 | * its documentation is hereby granted, provided that both the copyright |
45 | * notice and this permission notice appear in all copies of the |
46 | * software, derivative works or modified versions, and any portions |
47 | * thereof, and that both notices appear in supporting documentation. |
48 | * |
49 | * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" |
50 | * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND |
51 | * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. |
52 | * |
53 | * Carnegie Mellon requests users of this software to return to |
54 | * |
55 | * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU |
56 | * School of Computer Science |
57 | * Carnegie Mellon University |
58 | * Pittsburgh PA 15213-3890 |
59 | * |
60 | * any improvements or extensions that they make and grant Carnegie the |
61 | * rights to redistribute these changes. |
62 | */ |
63 | |
64 | #ifndef _UVM_UVM_PDAEMON_H_ |
65 | #define _UVM_UVM_PDAEMON_H_ |
66 | |
67 | /* |
68 | * uvm_pdaemon.h: page daemon hooks |
69 | */ |
70 | |
71 | #ifdef _KERNEL |
72 | |
73 | /* |
74 | * prototypes |
75 | */ |
76 | |
77 | void uvm_wait(const char *); |
78 | bool uvm_reclaimable(void); |
79 | |
80 | kmutex_t *uvmpd_trylockowner(struct vm_page *); |
81 | #ifdef VMSWAP |
82 | bool uvmpd_trydropswap(struct vm_page *); |
83 | #else |
84 | #define uvmpd_trydropswap(_a_) (/*CONSTCOND*/false) |
85 | #endif |
86 | |
87 | #endif /* _KERNEL */ |
88 | |
89 | #endif /* _UVM_UVM_PDAEMON_H_ */ |
90 | |