1 /* $NetBSD: vadvise.h,v 1.10 2005/12/11 12:25:21 christos Exp $ */ 2 3 /*- 4 * Copyright (c) 1982, 1986, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. Neither the name of the University nor the names of its contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 * 31 * @(#)vadvise.h 8.1 (Berkeley) 6/2/93 32 */ 33 34 #ifndef _SYS_VADVISE_H_ 35 #define _SYS_VADVISE_H_ 36 37 /* 38 * Parameters to vadvise() to tell system of particular paging 39 * behaviour: 40 * VA_NORM Normal strategy 41 * VA_ANOM Sampling page behaviour is not a win, don't bother 42 * Suitable during GCs in LISP, or sequential or random 43 * page referencing. 44 * VA_SEQL Sequential behaviour expected. 45 * VA_FLUSH Invalidate all page table entries. 46 */ 47 #define VA_NORM 0 48 #define VA_ANOM 1 49 #define VA_SEQL 2 50 #define VA_FLUSH 3 51 52 #ifndef _KERNEL 53 __BEGIN_DECLS 54 int vadvise(int); 55 __END_DECLS 56 #endif 57 58 #endif /* !_SYS_VADVISE_H_ */ 59