78 lines
2.6 KiB
C
78 lines
2.6 KiB
C
/* $NetBSD: uvm_aobj.h,v 1.21 2011/02/02 15:28:38 chuck 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 */
|
|
|
|
/* internal flags */
|
|
#define UAO_FLAG_NOSWAP 0x8 /* aobj can't swap (kernel obj only!) */
|
|
|
|
#ifdef _KERNEL
|
|
#if defined(_KERNEL_OPT)
|
|
#include "opt_vmswap.h"
|
|
#endif
|
|
|
|
/*
|
|
* prototypes
|
|
*/
|
|
|
|
void uao_init(void);
|
|
int uao_set_swslot(struct uvm_object *, int, int);
|
|
#if defined(VMSWAP)
|
|
int uao_find_swslot(struct uvm_object *, int);
|
|
void uao_dropswap(struct uvm_object *, int);
|
|
bool uao_swap_off(int, int);
|
|
void uao_dropswap_range(struct uvm_object *, voff_t, voff_t);
|
|
#else /* defined(VMSWAP) */
|
|
#define uao_find_swslot(obj, off) 0
|
|
#define uao_dropswap(obj, off) /* nothing */
|
|
#define uao_dropswap_range(obj, lo, hi) /* nothing */
|
|
#endif /* defined(VMSWAP) */
|
|
|
|
#endif /* _KERNEL */
|
|
|
|
#endif /* _UVM_UVM_AOBJ_H_ */
|