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, vm_page_t mpred); 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 bool vm_reserv_is_page_free(vm_page_t m); 57 int vm_reserv_level(vm_page_t m); 58 int vm_reserv_level_iffullpop(vm_page_t m); 59 boolean_t vm_reserv_reclaim_contig(u_long npages, vm_paddr_t low, 60 vm_paddr_t high, u_long alignment, vm_paddr_t boundary); 61 boolean_t vm_reserv_reclaim_inactive(void); 62 void vm_reserv_rename(vm_page_t m, vm_object_t new_object, 63 vm_object_t old_object, vm_pindex_t old_object_offset); 64 int vm_reserv_size(int level); 65 vm_paddr_t vm_reserv_startup(vm_offset_t *vaddr, vm_paddr_t end, 66 vm_paddr_t high_water); 67 vm_page_t vm_reserv_to_superpage(vm_page_t m); 68 69 #endif /* VM_NRESERVLEVEL > 0 */ 70 #endif /* _KERNEL */ 71 #endif /* !_VM_RESERV_H_ */ 72