142 lines
5.0 KiB
C
142 lines
5.0 KiB
C
/* $NetBSD: uvm_page.h,v 1.15 2000/04/24 17:12:01 thorpej Exp $ */
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/*
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* Copyright (c) 1997 Charles D. Cranor and Washington University.
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* Copyright (c) 1991, 1993, The Regents of the University of California.
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*
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* All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* The Mach Operating System project at Carnegie-Mellon University.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by Charles D. Cranor,
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* Washington University, the University of California, Berkeley and
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* its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)vm_page.h 7.3 (Berkeley) 4/21/91
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* from: Id: uvm_page.h,v 1.1.2.6 1998/02/04 02:31:42 chuck Exp
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*
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*
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* Copyright (c) 1987, 1990 Carnegie-Mellon University.
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* All rights reserved.
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*
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* Permission to use, copy, modify and distribute this software and
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* its documentation is hereby granted, provided that both the copyright
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* notice and this permission notice appear in all copies of the
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* software, derivative works or modified versions, and any portions
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* thereof, and that both notices appear in supporting documentation.
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*
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* CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
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* CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
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* FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
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*
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* Carnegie Mellon requests users of this software to return to
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*
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* Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
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* School of Computer Science
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* Carnegie Mellon University
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* Pittsburgh PA 15213-3890
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*
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* any improvements or extensions that they make and grant Carnegie the
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* rights to redistribute these changes.
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*/
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#ifndef _UVM_UVM_PAGE_H_
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#define _UVM_UVM_PAGE_H_
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/*
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* uvm_page.h
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*/
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#ifdef _KERNEL
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/*
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* globals
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*/
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extern boolean_t vm_page_zero_enable;
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/*
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* macros
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*/
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#define uvm_lock_pageq() simple_lock(&uvm.pageqlock)
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#define uvm_unlock_pageq() simple_unlock(&uvm.pageqlock)
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#define uvm_pagehash(obj,off) \
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(((unsigned long)obj+(unsigned long)atop(off)) & uvm.page_hashmask)
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#define UVM_PAGEZERO_TARGET (uvmexp.free)
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/*
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* handle inline options
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*/
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#ifdef UVM_PAGE_INLINE
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#define PAGE_INLINE static __inline
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#else
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#define PAGE_INLINE /* nothing */
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#endif /* UVM_PAGE_INLINE */
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/*
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* prototypes: the following prototypes define the interface to pages
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*/
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void uvm_page_init __P((vaddr_t *, vaddr_t *));
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#if defined(UVM_PAGE_TRKOWN)
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void uvm_page_own __P((struct vm_page *, char *));
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#endif
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#if !defined(PMAP_STEAL_MEMORY)
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boolean_t uvm_page_physget __P((paddr_t *));
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#endif
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void uvm_page_rehash __P((void));
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void uvm_pageidlezero __P((void));
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PAGE_INLINE int uvm_lock_fpageq __P((void));
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PAGE_INLINE void uvm_unlock_fpageq __P((int));
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PAGE_INLINE void uvm_pageactivate __P((struct vm_page *));
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vaddr_t uvm_pageboot_alloc __P((vsize_t));
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PAGE_INLINE void uvm_pagecopy __P((struct vm_page *, struct vm_page *));
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PAGE_INLINE void uvm_pagedeactivate __P((struct vm_page *));
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void uvm_pagefree __P((struct vm_page *));
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PAGE_INLINE struct vm_page *uvm_pagelookup __P((struct uvm_object *, voff_t));
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void uvm_pageremove __P((struct vm_page *));
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/* uvm_pagerename: not needed */
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PAGE_INLINE void uvm_pageunwire __P((struct vm_page *));
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PAGE_INLINE void uvm_pagewait __P((struct vm_page *, int));
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PAGE_INLINE void uvm_pagewake __P((struct vm_page *));
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PAGE_INLINE void uvm_pagewire __P((struct vm_page *));
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PAGE_INLINE void uvm_pagezero __P((struct vm_page *));
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PAGE_INLINE int uvm_page_lookup_freelist __P((struct vm_page *));
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#endif /* _KERNEL */
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#endif /* _UVM_UVM_PAGE_H_ */
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