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