2 * SPDX-License-Identifier: (BSD-3-Clause AND MIT-CMU)
4 * Copyright (c) 1991, 1993
5 * The Regents of the University of California. All rights reserved.
7 * This code is derived from software contributed to Berkeley by
8 * The Mach Operating System project at Carnegie-Mellon University.
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 * 3. Neither the name of the University nor the names of its contributors
19 * may be used to endorse or promote products derived from this software
20 * without specific prior written permission.
22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
35 * Copyright (c) 1987, 1990 Carnegie-Mellon University.
36 * All rights reserved.
38 * Author: Avadis Tevanian, Jr.
40 * Permission to use, copy, modify and distribute this software and
41 * its documentation is hereby granted, provided that both the copyright
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43 * software, derivative works or modified versions, and any portions
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46 * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
47 * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
48 * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
50 * Carnegie Mellon requests users of this software to return to
52 * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
53 * School of Computer Science
54 * Carnegie Mellon University
55 * Pittsburgh PA 15213-3890
57 * any improvements or extensions that they make and grant Carnegie the
58 * rights to redistribute these changes.
61 #ifndef _VM_VM_PAGEOUT_H_
62 #define _VM_VM_PAGEOUT_H_
67 * Header file for pageout daemon.
71 * Exported data structures.
74 extern u_long vm_page_max_user_wired;
75 extern int vm_pageout_page_count;
78 #define VM_OOM_MEM_PF 2
79 #define VM_OOM_SWAPZ 3
84 #define VM_LOW_KMEM 0x01
85 #define VM_LOW_PAGES 0x02
86 #define VM_LOW_MBUFS 0x04
93 * Signal pageout-daemon and wait for it.
96 void vm_wait(vm_object_t obj);
97 int vm_wait_intr(vm_object_t obj);
98 void vm_waitpfault(struct domainset *, int timo);
99 void vm_wait_domain(int domain);
100 void vm_wait_min(void);
101 void vm_wait_severe(void);
103 int vm_pageout_flush(vm_page_t *, int, int, int, int *, boolean_t *);
104 void vm_pageout_oom(int shortage);
106 void vm_swapout_run(void);
107 void vm_swapout_run_idle(void);
110 #endif /* _VM_VM_PAGEOUT_H_ */