FreeBSD/Linux Kernel Cross Reference
sys/vm/_vm_phys.h

     /*-
      * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
      *
      * Copyright (c) 2002-2006 Rice University
      * Copyright (c) 2007 Alan L. Cox <alc@cs.rice.edu>
      * All rights reserved.
      *
      * This software was developed for the FreeBSD Project by Alan L. Cox,
      * Olivier Crameri, Peter Druschel, Sitaram Iyer, and Juan Navarro.
     *
     * 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.
     *
     * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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 COPYRIGHT
     * HOLDERS 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.
     *
     * $FreeBSD$
     */
    
    #ifndef __VM_PHYS_H_
    #define __VM_PHYS_H_
    
    #include <machine/vmparam.h>
    
    #ifndef VM_NFREEORDER_MAX
    #define VM_NFREEORDER_MAX       VM_NFREEORDER
    #endif
    
    struct vm_page;
    #ifndef VM_PAGE_HAVE_PGLIST
    TAILQ_HEAD(pglist, vm_page);
    #define VM_PAGE_HAVE_PGLIST
    #endif
    
    struct vm_freelist {
            struct pglist pl;
            int lcnt;
    };
    
    struct vm_phys_seg {
            vm_paddr_t      start;
            vm_paddr_t      end;
            vm_page_t       first_page;
    #if VM_NRESERVLEVEL > 0
            vm_reserv_t     first_reserv;
    #endif
    #ifdef __aarch64__
            void            *md_first;
    #endif
            int             domain;
            struct vm_freelist (*free_queues)[VM_NFREEPOOL][VM_NFREEORDER_MAX];
    };
    
    extern struct vm_phys_seg vm_phys_segs[];
    extern int vm_phys_nsegs;
    
    #endif /* !__VM_PHYS_H_ */

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