83 lines
2.4 KiB
C
83 lines
2.4 KiB
C
/* $OpenBSD: uvm_km.h,v 1.15 2017/05/11 00:42:05 dlg Exp $ */
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/* $NetBSD: uvm_km.h,v 1.9 1999/06/21 17:25:11 thorpej Exp $ */
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/*
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* Copyright (c) 1997 Charles D. Cranor and Washington University.
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* All rights reserved.
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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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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* from: Id: uvm_km.h,v 1.1.2.2 1997/12/30 12:03:15 mrg Exp
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*/
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#ifndef _UVM_UVM_KM_H_
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#define _UVM_UVM_KM_H_
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/*
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* uvm_km.h
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*/
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#ifdef _KERNEL
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#include <sys/mutex.h>
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/*
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* prototypes
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*/
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void uvm_km_init(vaddr_t, vaddr_t, vaddr_t);
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void uvm_km_page_init(void);
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void uvm_km_page_lateinit(void);
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void uvm_km_pgremove(struct uvm_object *, vaddr_t, vaddr_t);
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void uvm_km_pgremove_intrsafe(vaddr_t, vaddr_t);
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#if !defined(__HAVE_PMAP_DIRECT)
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#define UVM_KM_PAGES_LOWAT_MAX (2048)
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#define UVM_KM_PAGES_HIWAT_MAX (4 * UVM_KM_PAGES_LOWAT_MAX)
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struct uvm_km_free_page {
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struct uvm_km_free_page *next;
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};
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struct uvm_km_pages {
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struct mutex mtx;
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/* Low and high water mark for addresses. */
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int lowat;
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int hiwat;
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/* Kernel address pool. */
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int free;
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vaddr_t page[UVM_KM_PAGES_HIWAT_MAX];
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struct uvm_km_free_page *freelist;
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int freelistlen;
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struct proc *km_proc;
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};
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extern struct uvm_km_pages uvm_km_pages;
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#endif /* _HAVE_PMAP_DIRECT */
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#endif /* _KERNEL */
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#endif /* _UVM_UVM_KM_H_ */
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