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/* $OpenBSD: uvm_aobj.h,v 1.17 2020/10/21 09:08:14 mpi 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.
*
* 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 */
#define UAO_FLAG_CANFAIL 0x4 /* creation can fail */
/* internal flags */
#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);
int uao_dropswap(struct uvm_object *, int);
int uao_swap_off(int, int);
int uao_shrink(struct uvm_object *, int);
int uao_grow(struct uvm_object *, int);
/*
* globals
*/
extern const struct uvm_pagerops aobj_pager;
#endif /* _KERNEL */
#endif /* _UVM_UVM_AOBJ_H_ */
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