1 /* $OpenBSD: uvm_aobj.h,v 1.5 2001/01/29 02:07:43 niklas Exp $ */ 2 /* $NetBSD: uvm_aobj.h,v 1.8 1999/03/26 17:34:15 chs Exp $ */ 3 4 /* 5 * Copyright (c) 1998 Chuck Silvers, Charles D. Cranor and 6 * Washington University. 7 * All rights reserved. 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 * 3. All advertising materials mentioning features or use of this software 18 * must display the following acknowledgement: 19 * This product includes software developed by Charles D. Cranor and 20 * Washington University. 21 * 4. The name of the author may not be used to endorse or promote products 22 * derived from this software without specific prior written permission. 23 * 24 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 25 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 26 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 27 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 28 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 29 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 30 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 31 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 32 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 33 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 34 * 35 * from: Id: uvm_aobj.h,v 1.1.2.4 1998/02/06 05:19:28 chs Exp 36 */ 37 /* 38 * uvm_aobj.h: anonymous memory uvm_object pager 39 * 40 * author: Chuck Silvers <chuq@chuq.com> 41 * started: Jan-1998 42 * 43 * - design mostly from Chuck Cranor 44 */ 45 46 #ifndef _UVM_UVM_AOBJ_H_ 47 #define _UVM_UVM_AOBJ_H_ 48 49 /* 50 * flags 51 */ 52 53 /* flags for uao_create: can only be used one time (at bootup) */ 54 #define UAO_FLAG_KERNOBJ 0x1 /* create kernel object */ 55 #define UAO_FLAG_KERNSWAP 0x2 /* enable kernel swap */ 56 57 /* internal flags */ 58 #define UAO_FLAG_KILLME 0x4 /* aobj should die when last released 59 * page is no longer PG_BUSY ... */ 60 #define UAO_FLAG_NOSWAP 0x8 /* aobj can't swap (kernel obj only!) */ 61 62 /* 63 * prototypes 64 */ 65 66 int uao_set_swslot __P((struct uvm_object *, int, int)); 67 void uao_dropswap __P((struct uvm_object *, int)); 68 69 /* 70 * globals 71 */ 72 73 extern struct uvm_pagerops aobj_pager; 74 75 #endif /* _UVM_UVM_AOBJ_H_ */ 76