/* 
 * Copyright (c) 1991 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 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.
 *
 *	from: @(#)vm_statistics.h	7.2 (Berkeley) 4/21/91
 *	$Id: vm_statistics.h,v 1.4 1993/07/29 21:45:43 jtc Exp $
 *
 *
 * Copyright (c) 1987, 1990 Carnegie-Mellon University.
 * All rights reserved.
 *
 * Authors: Avadis Tevanian, Jr., Michael Wayne Young, David Golub
 * 
 * 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 _VM_VM_STATISTICS_H_
#define _VM_VM_STATISTICS_H_

/*
 *	Virtual memory statistics structure.
 */

struct vm_statistics {
	long	pagesize;		/* page size in bytes */
	long	free_count;		/* # of pages free */
	long	active_count;		/* # of pages active */
	long	inactive_count;		/* # of pages inactive */
	long	wire_count;		/* # of pages wired down */
	long	zero_fill_count;	/* # of zero fill pages */
	long	reactivations;		/* # of pages reactivated */
	long	pageins;		/* # of pageins */
	long	pageouts;		/* # of pageouts */
	long	faults;			/* # of faults */
	long	cow_faults;		/* # of copy-on-writes */
	long	lookups;		/* object cache lookups */
	long	hits;			/* object cache hits */
};

typedef struct vm_statistics	*vm_statistics_t;
typedef struct vm_statistics	vm_statistics_data_t;

#ifdef	KERNEL
vm_statistics_data_t	vm_stat;
#endif	/* KERNEL */

/*
 *	Each machine dependent implementation is expected to
 *	keep certain statistics.  They may do this anyway they
 *	so choose, but are expected to return the statistics
 *	in the following structure.
 */

struct pmap_statistics {
	long		resident_count;	/* # of pages mapped (total)*/
	long		wired_count;	/* # of pages wired */
};

typedef struct pmap_statistics	*pmap_statistics_t;

#endif /* !_VM_VM_STATISTICS_H_ */