/* $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 * 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_ */