FreeBSD/Linux Kernel Cross Reference
sys/vm/vm_reserv.h
1 /*-
2 * Copyright (c) 2002-2006 Rice University
3 * Copyright (c) 2007-2008 Alan L. Cox <alc@cs.rice.edu>
4 * All rights reserved.
5 *
6 * This software was developed for the FreeBSD Project by Alan L. Cox,
7 * Olivier Crameri, Peter Druschel, Sitaram Iyer, and Juan Navarro.
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
11 * are met:
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in the
16 * documentation and/or other materials provided with the distribution.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
19 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
21 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
22 * HOLDERS OR CONTRIBUTORS 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; LOSS
25 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
26 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY
28 * WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29 * POSSIBILITY OF SUCH DAMAGE.
30 *
31 * $FreeBSD$
32 */
33
34 /*
35 * Superpage reservation management definitions
36 */
37
38 #ifndef _VM_RESERV_H_
39 #define _VM_RESERV_H_
40
41 #ifdef _KERNEL
42
43 #if VM_NRESERVLEVEL > 0
44
45 /*
46 * The following functions are only to be used by the virtual memory system.
47 */
48 vm_page_t vm_reserv_alloc_contig(vm_object_t object, vm_pindex_t pindex,
49 u_long npages, vm_paddr_t low, vm_paddr_t high,
50 u_long alignment, vm_paddr_t boundary);
51 vm_page_t vm_reserv_alloc_page(vm_object_t object, vm_pindex_t pindex,
52 vm_page_t mpred);
53 void vm_reserv_break_all(vm_object_t object);
54 boolean_t vm_reserv_free_page(vm_page_t m);
55 void vm_reserv_init(void);
56 int vm_reserv_level_iffullpop(vm_page_t m);
57 boolean_t vm_reserv_reactivate_page(vm_page_t m);
58 boolean_t vm_reserv_reclaim_contig(u_long npages, vm_paddr_t low,
59 vm_paddr_t high, u_long alignment, vm_paddr_t boundary);
60 boolean_t vm_reserv_reclaim_inactive(void);
61 void vm_reserv_rename(vm_page_t m, vm_object_t new_object,
62 vm_object_t old_object, vm_pindex_t old_object_offset);
63 vm_paddr_t vm_reserv_startup(vm_offset_t *vaddr, vm_paddr_t end,
64 vm_paddr_t high_water);
65
66 #endif /* VM_NRESERVLEVEL > 0 */
67 #endif /* _KERNEL */
68 #endif /* !_VM_RESERV_H_ */
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