fcb0475833
Add a new VM return code KERN_RESTART which means, deallocate and restart in fault. Reviewed by: kib, markj Differential Revision: https://reviews.freebsd.org/D23303
149 lines
5.0 KiB
C
149 lines
5.0 KiB
C
/*-
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* SPDX-License-Identifier: (BSD-3-Clause AND MIT-CMU)
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*
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* Copyright (c) 1991, 1993
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* The Regents of the University of California. 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. 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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* from: @(#)vm_param.h 8.1 (Berkeley) 6/11/93
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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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* Authors: Avadis Tevanian, Jr., Michael Wayne Young
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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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* $FreeBSD$
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*/
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/*
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* Machine independent virtual memory parameters.
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*/
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#ifndef _VM_PARAM_
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#define _VM_PARAM_
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#include <machine/vmparam.h>
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/*
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* CTL_VM identifiers
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*/
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#define VM_TOTAL 1 /* struct vmtotal */
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#define VM_METER VM_TOTAL/* deprecated, use VM_TOTAL */
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#define VM_LOADAVG 2 /* struct loadavg */
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#define VM_V_FREE_MIN 3 /* vm_cnt.v_free_min */
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#define VM_V_FREE_TARGET 4 /* vm_cnt.v_free_target */
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#define VM_V_FREE_RESERVED 5 /* vm_cnt.v_free_reserved */
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#define VM_V_INACTIVE_TARGET 6 /* vm_cnt.v_inactive_target */
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#define VM_OBSOLETE_7 7 /* unused, formerly v_cache_min */
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#define VM_OBSOLETE_8 8 /* unused, formerly v_cache_max */
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#define VM_V_PAGEOUT_FREE_MIN 9 /* vm_cnt.v_pageout_free_min */
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#define VM_OBSOLETE_10 10 /* pageout algorithm */
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#define VM_SWAPPING_ENABLED 11 /* swapping enabled */
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#define VM_OVERCOMMIT 12 /* vm.overcommit */
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#define VM_MAXID 13 /* number of valid vm ids */
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/*
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* Structure for swap device statistics
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*/
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#define XSWDEV_VERSION 2
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struct xswdev {
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u_int xsw_version;
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dev_t xsw_dev;
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int xsw_flags;
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int xsw_nblks;
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int xsw_used;
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};
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/*
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* Return values from the VM routines.
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*/
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#define KERN_SUCCESS 0
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#define KERN_INVALID_ADDRESS 1
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#define KERN_PROTECTION_FAILURE 2
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#define KERN_NO_SPACE 3
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#define KERN_INVALID_ARGUMENT 4
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#define KERN_FAILURE 5
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#define KERN_RESOURCE_SHORTAGE 6
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#define KERN_NOT_RECEIVER 7
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#define KERN_NO_ACCESS 8
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#define KERN_OUT_OF_BOUNDS 9
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#define KERN_RESTART 10
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#ifndef PA_LOCK_COUNT
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#ifdef SMP
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#define PA_LOCK_COUNT 32
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#else
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#define PA_LOCK_COUNT 1
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#endif /* !SMP */
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#endif /* !PA_LOCK_COUNT */
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#ifndef KSTACK_MAX_PAGES
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#define KSTACK_MAX_PAGES 32
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#endif
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#ifndef PHYS_AVAIL_ENTRIES
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#define PHYS_AVAIL_ENTRIES (VM_PHYSSEG_MAX * 2)
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#endif
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#define PHYS_AVAIL_COUNT (PHYS_AVAIL_ENTRIES + 2)
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#ifndef ASSEMBLER
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#ifdef _KERNEL
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#define num_pages(x) \
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((vm_offset_t)((((vm_offset_t)(x)) + PAGE_MASK) >> PAGE_SHIFT))
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extern unsigned long maxtsiz;
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extern unsigned long dfldsiz;
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extern unsigned long maxdsiz;
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extern unsigned long dflssiz;
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extern unsigned long maxssiz;
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extern unsigned long sgrowsiz;
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#endif /* _KERNEL */
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#endif /* ASSEMBLER */
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#endif /* _VM_PARAM_ */
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