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uvm_page.h revision 1.1 
      1 /*	$Id: uvm_page.h,v 1.1 1998/02/05 06:25:09 mrg 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) 1997 Charles D. Cranor and Washington University.
      9  * Copyright (c) 1991, 1993, The Regents of the University of California.
     10  *
     11  * All rights reserved.
     12  *
     13  * This code is derived from software contributed to Berkeley by
     14  * The Mach Operating System project at Carnegie-Mellon University.
     15  *
     16  * Redistribution and use in source and binary forms, with or without
     17  * modification, are permitted provided that the following conditions
     18  * are met:
     19  * 1. Redistributions of source code must retain the above copyright
     20  *    notice, this list of conditions and the following disclaimer.
     21  * 2. Redistributions in binary form must reproduce the above copyright
     22  *    notice, this list of conditions and the following disclaimer in the
     23  *    documentation and/or other materials provided with the distribution.
     24  * 3. All advertising materials mentioning features or use of this software
     25  *    must display the following acknowledgement:
     26  *	This product includes software developed by Charles D. Cranor,
     27  *      Washington University, the University of California, Berkeley and
     28  *      its contributors.
     29  * 4. Neither the name of the University nor the names of its contributors
     30  *    may be used to endorse or promote products derived from this software
     31  *    without specific prior written permission.
     32  *
     33  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     34  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     35  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     36  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     37  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     38  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     39  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     40  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     41  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     42  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     43  * SUCH DAMAGE.
     44  *
     45  *	@(#)vm_page.h   7.3 (Berkeley) 4/21/91
     46  *
     47  *
     48  * Copyright (c) 1987, 1990 Carnegie-Mellon University.
     49  * All rights reserved.
     50  *
     51  * Permission to use, copy, modify and distribute this software and
     52  * its documentation is hereby granted, provided that both the copyright
     53  * notice and this permission notice appear in all copies of the
     54  * software, derivative works or modified versions, and any portions
     55  * thereof, and that both notices appear in supporting documentation.
     56  *
     57  * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
     58  * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
     59  * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
     60  *
     61  * Carnegie Mellon requests users of this software to return to
     62  *
     63  *  Software Distribution Coordinator  or  Software.Distribution (at) CS.CMU.EDU
     64  *  School of Computer Science
     65  *  Carnegie Mellon University
     66  *  Pittsburgh PA 15213-3890
     67  *
     68  * any improvements or extensions that they make and grant Carnegie the
     69  * rights to redistribute these changes.
     70  */
     71 
     72 /*
     73  * uvm_page.h
     74  */
     75 
     76 UVMHIST_DECL(maphist);
     77 
     78 /*
     79  * macros
     80  */
     81 
     82 #define uvm_lock_pageq()	simple_lock(&uvm.pageqlock)
     83 #define uvm_unlock_pageq()	simple_unlock(&uvm.pageqlock)
     84 #define uvm_lock_fpageq()	simple_lock(&uvm.fpageqlock)
     85 #define uvm_unlock_fpageq()	simple_unlock(&uvm.fpageqlock)
     86 
     87 #define uvm_pagehash(obj,off) \
     88   (((unsigned long)obj+(unsigned long)atop(off)) & uvm.page_hashmask)
     89 
     90 /*
     91  * handle inline options
     92  */
     93 
     94 #ifdef UVM_PAGE_INLINE
     95 #define PAGE_INLINE static __inline
     96 #else
     97 #define PAGE_INLINE /* nothing */
     98 #endif /* UVM_PAGE_INLINE */
     99 
    100 /*
    101  * prototypes: the following prototypes define the interface to amaps
    102  */
    103 
    104 void uvm_page_init __P((vm_offset_t *, vm_offset_t *));
    105 #if defined(UVM_PAGE_TRKOWN)
    106 void uvm_page_own __P((struct vm_page *, char *));
    107 #endif
    108 void uvm_page_rehash __P((void));
    109 PAGE_INLINE void uvm_pageactivate __P((struct vm_page *));
    110 vm_offset_t uvm_pageboot_alloc __P((vm_size_t));
    111 PAGE_INLINE void uvm_pagecopy __P((struct vm_page *, struct vm_page *));
    112 PAGE_INLINE void uvm_pagedeactivate __P((struct vm_page *));
    113 void uvm_pagefree __P((struct vm_page *));
    114 PAGE_INLINE struct vm_page *uvm_pagelookup
    115 					__P((struct uvm_object *, vm_offset_t));
    116 void uvm_pageremove __P((struct vm_page *));
    117 /* uvm_pagerename: not needed */
    118 PAGE_INLINE void uvm_pageunwire __P((struct vm_page *));
    119 PAGE_INLINE void uvm_pagewait __P((struct vm_page *, int));
    120 PAGE_INLINE void uvm_pagewake __P((struct vm_page *));
    121 PAGE_INLINE void uvm_pagewire __P((struct vm_page *, boolean_t));
    122 PAGE_INLINE void uvm_pagezero __P((struct vm_page *));
    123 
    124