1 /* $NetBSD: uvm_aobj.h,v 1.11 2001/09/15 20:36:45 chs Exp $ */ 2 3 /* 4 * Copyright (c) 1998 Chuck Silvers, Charles D. Cranor and 5 * Washington University. 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. All advertising materials mentioning features or use of this software 17 * must display the following acknowledgement: 18 * This product includes software developed by Charles D. Cranor and 19 * Washington University. 20 * 4. The name of the author may not be used to endorse or promote products 21 * derived from this software without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 24 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 25 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 26 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 27 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 28 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 29 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 30 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 31 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 32 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 33 * 34 * from: Id: uvm_aobj.h,v 1.1.2.4 1998/02/06 05:19:28 chs Exp 35 */ 36 /* 37 * uvm_aobj.h: anonymous memory uvm_object pager 38 * 39 * author: Chuck Silvers <chuq@chuq.com> 40 * started: Jan-1998 41 * 42 * - design mostly from Chuck Cranor 43 */ 44 45 #ifndef _UVM_UVM_AOBJ_H_ 46 #define _UVM_UVM_AOBJ_H_ 47 48 /* 49 * flags 50 */ 51 52 /* flags for uao_create: can only be used one time (at bootup) */ 53 #define UAO_FLAG_KERNOBJ 0x1 /* create kernel object */ 54 #define UAO_FLAG_KERNSWAP 0x2 /* enable kernel swap */ 55 56 /* internal flags */ 57 #define UAO_FLAG_NOSWAP 0x8 /* aobj can't swap (kernel obj only!) */ 58 59 #ifdef _KERNEL 60 61 /* 62 * prototypes 63 */ 64 65 void uao_init __P((void)); 66 int uao_set_swslot __P((struct uvm_object *, int, int)); 67 int uao_find_swslot __P((struct uvm_object *, int)); 68 void uao_dropswap __P((struct uvm_object *, int)); 69 int uao_swap_off __P((int, int)); 70 71 /* 72 * globals 73 */ 74 75 extern struct uvm_pagerops aobj_pager; 76 77 #endif /* _KERNEL */ 78 79 #endif /* _UVM_UVM_AOBJ_H_ */ 80