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uvm_aobj.h revision 1.6 
      1 /*	$NetBSD: uvm_aobj.h,v 1.6 1998/02/12 07:36:45 chs Exp $	*/
      2 
      3 /*
      4  * XXXCDC: "ROUGH DRAFT" QUALITY UVM PRE-RELEASE FILE!
      5  *	   >>>USE AT YOUR OWN RISK, WORK IS NOT FINISHED<<<
      6  */
      7 /*
      8  * Copyright (c) 1998 Chuck Silvers, Charles D. Cranor and
      9  *                    Washington University.
     10  * All rights reserved.
     11  *
     12  * Redistribution and use in source and binary forms, with or without
     13  * modification, are permitted provided that the following conditions
     14  * are met:
     15  * 1. Redistributions of source code must retain the above copyright
     16  *    notice, this list of conditions and the following disclaimer.
     17  * 2. Redistributions in binary form must reproduce the above copyright
     18  *    notice, this list of conditions and the following disclaimer in the
     19  *    documentation and/or other materials provided with the distribution.
     20  * 3. All advertising materials mentioning features or use of this software
     21  *    must display the following acknowledgement:
     22  *      This product includes software developed by Charles D. Cranor and
     23  *      Washington University.
     24  * 4. The name of the author may not be used to endorse or promote products
     25  *    derived from this software without specific prior written permission.
     26  *
     27  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     28  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     29  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     30  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     31  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     32  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     33  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     34  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     35  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     36  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     37  *
     38  * from: Id: uvm_aobj.h,v 1.1.2.4 1998/02/06 05:19:28 chs Exp
     39  */
     40 /*
     41  * uvm_aobj.h: anonymous memory uvm_object pager
     42  *
     43  * author: Chuck Silvers <chuq (at) chuq.com>
     44  * started: Jan-1998
     45  *
     46  * - design mostly from Chuck Cranor
     47  */
     48 
     49 #ifndef _UVM_UVM_AOBJ_H_
     50 #define _UVM_UVM_AOBJ_H_
     51 
     52 /*
     53  * flags
     54  */
     55 
     56 /* flags for uao_create: can only be used one time (at bootup) */
     57 #define UAO_FLAG_KERNOBJ	0x1	/* create kernel object */
     58 #define UAO_FLAG_KERNSWAP	0x2	/* enable kernel swap */
     59 
     60 /* internal flags */
     61 #define UAO_FLAG_KILLME		0x4	/* aobj should die when last released
     62 					 * page is no longer PG_BUSY ... */
     63 #define UAO_FLAG_NOSWAP		0x8	/* aobj can't swap (kernel obj only!) */
     64 
     65 /*
     66  * prototypes
     67  */
     68 
     69 int uao_set_swslot __P((struct uvm_object *, int, int));
     70 
     71 /*
     72  * globals
     73  */
     74 
     75 extern struct uvm_pagerops aobj_pager;
     76 
     77 #endif /* _UVM_UVM_AOBJ_H_ */
     78