/* $OpenBSD: uvm_aobj.h,v 1.8 2002/03/14 01:27:18 millert Exp $ */ /* $NetBSD: uvm_aobj.h,v 1.10 2000/01/11 06:57:49 chs Exp $ */ /* * Copyright (c) 1998 Chuck Silvers, Charles D. Cranor and * Washington University. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by Charles D. Cranor and * Washington University. * 4. The name of the author may not be used to endorse or promote products * derived from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * * from: Id: uvm_aobj.h,v 1.1.2.4 1998/02/06 05:19:28 chs Exp */ /* * uvm_aobj.h: anonymous memory uvm_object pager * * author: Chuck Silvers <chuq@chuq.com> * started: Jan-1998 * * - design mostly from Chuck Cranor */ #ifndef _UVM_UVM_AOBJ_H_ #define _UVM_UVM_AOBJ_H_ /* * flags */ /* flags for uao_create: can only be used one time (at bootup) */ #define UAO_FLAG_KERNOBJ 0x1 /* create kernel object */ #define UAO_FLAG_KERNSWAP 0x2 /* enable kernel swap */ /* internal flags */ #define UAO_FLAG_KILLME 0x4 /* aobj should die when last released * page is no longer PG_BUSY ... */ #define UAO_FLAG_NOSWAP 0x8 /* aobj can't swap (kernel obj only!) */ #ifdef _KERNEL /* * prototypes */ void uao_init(void); int uao_set_swslot(struct uvm_object *, int, int); void uao_dropswap(struct uvm_object *, int); int uao_swap_off(int, int); /* * globals */ extern struct uvm_pagerops aobj_pager; #endif /* _KERNEL */ #endif /* _UVM_UVM_AOBJ_H_ */