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      1  1.23  christos /*	$NetBSD: uvm_aobj.h,v 1.23 2013/10/18 17:48:44 christos Exp $	*/
      2   1.1       mrg 
      3   1.6       chs /*
      4   1.6       chs  * Copyright (c) 1998 Chuck Silvers, Charles D. Cranor and
      5   1.6       chs  *                    Washington University.
      6   1.6       chs  * All rights reserved.
      7   1.6       chs  *
      8   1.6       chs  * Redistribution and use in source and binary forms, with or without
      9   1.6       chs  * modification, are permitted provided that the following conditions
     10   1.6       chs  * are met:
     11   1.6       chs  * 1. Redistributions of source code must retain the above copyright
     12   1.6       chs  *    notice, this list of conditions and the following disclaimer.
     13   1.6       chs  * 2. Redistributions in binary form must reproduce the above copyright
     14   1.6       chs  *    notice, this list of conditions and the following disclaimer in the
     15   1.6       chs  *    documentation and/or other materials provided with the distribution.
     16   1.6       chs  *
     17   1.6       chs  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     18   1.6       chs  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     19   1.6       chs  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     20   1.6       chs  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     21   1.6       chs  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     22   1.6       chs  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     23   1.6       chs  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     24   1.6       chs  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     25   1.6       chs  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     26   1.6       chs  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     27   1.6       chs  *
     28   1.4       mrg  * from: Id: uvm_aobj.h,v 1.1.2.4 1998/02/06 05:19:28 chs Exp
     29   1.4       mrg  */
     30   1.1       mrg /*
     31   1.6       chs  * uvm_aobj.h: anonymous memory uvm_object pager
     32   1.6       chs  *
     33   1.6       chs  * author: Chuck Silvers <chuq (at) chuq.com>
     34   1.6       chs  * started: Jan-1998
     35   1.1       mrg  *
     36   1.6       chs  * - design mostly from Chuck Cranor
     37   1.1       mrg  */
     38   1.1       mrg 
     39   1.5     perry #ifndef _UVM_UVM_AOBJ_H_
     40   1.5     perry #define _UVM_UVM_AOBJ_H_
     41   1.1       mrg 
     42   1.1       mrg /*
     43  1.22     rmind  * Flags for uao_create: UAO_FLAG_KERNOBJ and UAO_FLAG_KERNSWAP are
     44  1.22     rmind  * used only once, to initialise UVM.
     45   1.1       mrg  */
     46  1.22     rmind #define	UAO_FLAG_KERNOBJ	0x1	/* create kernel object */
     47  1.22     rmind #define	UAO_FLAG_KERNSWAP	0x2	/* enable kernel swap */
     48  1.22     rmind #define	UAO_FLAG_NOSWAP		0x8	/* aobj may not swap */
     49   1.1       mrg 
     50   1.9   thorpej #ifdef _KERNEL
     51  1.15      yamt #if defined(_KERNEL_OPT)
     52  1.15      yamt #include "opt_vmswap.h"
     53  1.15      yamt #endif
     54   1.9   thorpej 
     55  1.22     rmind void	uao_init(void);
     56  1.22     rmind int	uao_set_swslot(struct uvm_object *, int, int);
     57   1.1       mrg 
     58  1.22     rmind #if	defined(VMSWAP)
     59  1.22     rmind int	uao_find_swslot(struct uvm_object *, int);
     60  1.22     rmind void	uao_dropswap(struct uvm_object *, int);
     61  1.22     rmind bool	uao_swap_off(int, int);
     62  1.22     rmind void	uao_dropswap_range(struct uvm_object *, voff_t, voff_t);
     63  1.22     rmind #else
     64  1.23  christos #define	uao_find_swslot(obj, off)	(__USE(off), 0)
     65  1.15      yamt #define	uao_dropswap(obj, off)		/* nothing */
     66  1.17      yamt #define	uao_dropswap_range(obj, lo, hi)	/* nothing */
     67  1.22     rmind #endif
     68   1.3       chs 
     69   1.9   thorpej #endif /* _KERNEL */
     70   1.3       chs 
     71   1.5     perry #endif /* _UVM_UVM_AOBJ_H_ */
     72