The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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

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    1 /*-
    2  * Copyright (c) 2002-2006 Rice University
    3  * Copyright (c) 2007-2008 Alan L. Cox <alc@cs.rice.edu>
    4  * All rights reserved.
    5  *
    6  * This software was developed for the FreeBSD Project by Alan L. Cox,
    7  * Olivier Crameri, Peter Druschel, Sitaram Iyer, and Juan Navarro.
    8  *
    9  * Redistribution and use in source and binary forms, with or without
   10  * modification, are permitted provided that the following conditions
   11  * are met:
   12  * 1. Redistributions of source code must retain the above copyright
   13  *    notice, this list of conditions and the following disclaimer.
   14  * 2. Redistributions in binary form must reproduce the above copyright
   15  *    notice, this list of conditions and the following disclaimer in the
   16  *    documentation and/or other materials provided with the distribution.
   17  *
   18  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
   19  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
   20  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
   21  * A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT
   22  * HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
   23  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
   24  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
   25  * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
   26  * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   27  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY
   28  * WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
   29  * POSSIBILITY OF SUCH DAMAGE.
   30  *
   31  * $FreeBSD: releng/8.4/sys/vm/vm_reserv.h 199583 2009-11-20 15:27:52Z jhb $
   32  */
   33 
   34 /*
   35  *      Superpage reservation management definitions
   36  */
   37 
   38 #ifndef _VM_RESERV_H_
   39 #define _VM_RESERV_H_
   40 
   41 #ifdef _KERNEL
   42 
   43 #if VM_NRESERVLEVEL > 0
   44 
   45 vm_page_t       vm_reserv_alloc_page(vm_object_t object, vm_pindex_t pindex);
   46 void            vm_reserv_break_all(vm_object_t object);
   47 boolean_t       vm_reserv_free_page(vm_page_t m);
   48 void            vm_reserv_init(void);
   49 int             vm_reserv_level_iffullpop(vm_page_t m);
   50 boolean_t       vm_reserv_reactivate_page(vm_page_t m);
   51 boolean_t       vm_reserv_reclaim_contig(vm_paddr_t size, vm_paddr_t low,
   52                     vm_paddr_t high, unsigned long alignment,
   53                     unsigned long boundary);
   54 boolean_t       vm_reserv_reclaim_inactive(void);
   55 void            vm_reserv_rename(vm_page_t m, vm_object_t new_object,
   56                     vm_object_t old_object, vm_pindex_t old_object_offset);
   57 vm_paddr_t      vm_reserv_startup(vm_offset_t *vaddr, vm_paddr_t end,
   58                     vm_paddr_t high_water);
   59 
   60 #endif  /* VM_NRESERVLEVEL > 0 */
   61 #endif  /* _KERNEL */
   62 #endif  /* !_VM_RESERV_H_ */

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