1*777068d6Schristos /* $NetBSD: uvm_aobj.h,v 1.23 2013/10/18 17:48:44 christos Exp $ */ 2f2caacc7Smrg 31f6b921cSmrg /* 47f45dbdfSchs * Copyright (c) 1998 Chuck Silvers, Charles D. Cranor and 57f45dbdfSchs * Washington University. 67f45dbdfSchs * All rights reserved. 77f45dbdfSchs * 87f45dbdfSchs * Redistribution and use in source and binary forms, with or without 97f45dbdfSchs * modification, are permitted provided that the following conditions 107f45dbdfSchs * are met: 117f45dbdfSchs * 1. Redistributions of source code must retain the above copyright 127f45dbdfSchs * notice, this list of conditions and the following disclaimer. 137f45dbdfSchs * 2. Redistributions in binary form must reproduce the above copyright 147f45dbdfSchs * notice, this list of conditions and the following disclaimer in the 157f45dbdfSchs * documentation and/or other materials provided with the distribution. 167f45dbdfSchs * 177f45dbdfSchs * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 187f45dbdfSchs * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 197f45dbdfSchs * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 207f45dbdfSchs * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 217f45dbdfSchs * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 227f45dbdfSchs * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 237f45dbdfSchs * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 247f45dbdfSchs * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 257f45dbdfSchs * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 267f45dbdfSchs * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 277f45dbdfSchs * 281f6b921cSmrg * from: Id: uvm_aobj.h,v 1.1.2.4 1998/02/06 05:19:28 chs Exp 291f6b921cSmrg */ 30f2caacc7Smrg /* 317f45dbdfSchs * uvm_aobj.h: anonymous memory uvm_object pager 32f2caacc7Smrg * 337f45dbdfSchs * author: Chuck Silvers <chuq@chuq.com> 347f45dbdfSchs * started: Jan-1998 357f45dbdfSchs * 367f45dbdfSchs * - design mostly from Chuck Cranor 37f2caacc7Smrg */ 38f2caacc7Smrg 39021fdb64Sperry #ifndef _UVM_UVM_AOBJ_H_ 40021fdb64Sperry #define _UVM_UVM_AOBJ_H_ 41f2caacc7Smrg 42f2caacc7Smrg /* 438c260680Srmind * Flags for uao_create: UAO_FLAG_KERNOBJ and UAO_FLAG_KERNSWAP are 448c260680Srmind * used only once, to initialise UVM. 45f2caacc7Smrg */ 46f2caacc7Smrg #define UAO_FLAG_KERNOBJ 0x1 /* create kernel object */ 47f2caacc7Smrg #define UAO_FLAG_KERNSWAP 0x2 /* enable kernel swap */ 488c260680Srmind #define UAO_FLAG_NOSWAP 0x8 /* aobj may not swap */ 49f2caacc7Smrg 50abb48c5bSthorpej #ifdef _KERNEL 516fbf5bf6Syamt #if defined(_KERNEL_OPT) 526fbf5bf6Syamt #include "opt_vmswap.h" 536fbf5bf6Syamt #endif 54abb48c5bSthorpej 55325f5482Sjunyoung void uao_init(void); 56325f5482Sjunyoung int uao_set_swslot(struct uvm_object *, int, int); 578c260680Srmind 586fbf5bf6Syamt #if defined(VMSWAP) 59325f5482Sjunyoung int uao_find_swslot(struct uvm_object *, int); 60325f5482Sjunyoung void uao_dropswap(struct uvm_object *, int); 6193feeb12Smatt bool uao_swap_off(int, int); 629df1f09bSyamt void uao_dropswap_range(struct uvm_object *, voff_t, voff_t); 638c260680Srmind #else 64*777068d6Schristos #define uao_find_swslot(obj, off) (__USE(off), 0) 656fbf5bf6Syamt #define uao_dropswap(obj, off) /* nothing */ 669df1f09bSyamt #define uao_dropswap_range(obj, lo, hi) /* nothing */ 678c260680Srmind #endif 6839c12db7Schs 69abb48c5bSthorpej #endif /* _KERNEL */ 70abb48c5bSthorpej 71021fdb64Sperry #endif /* _UVM_UVM_AOBJ_H_ */ 72