1 /* $NetBSD: uvm_swap.h,v 1.16 2007/02/22 06:05:02 thorpej Exp $ */ 2 3 /* 4 * Copyright (c) 1997 Matthew R. Green 5 * 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. The name of the author may not be used to endorse or promote products 16 * derived from this software without specific prior written permission. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 19 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 20 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 21 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 23 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 24 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 25 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 26 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 28 * SUCH DAMAGE. 29 * 30 * from: Id: uvm_swap.h,v 1.1.2.6 1997/12/15 05:39:31 mrg Exp 31 */ 32 33 #ifndef _UVM_UVM_SWAP_H_ 34 #define _UVM_UVM_SWAP_H_ 35 36 #define SWSLOT_BAD (-1) 37 38 #ifdef _KERNEL 39 #if defined(_KERNEL_OPT) 40 #include "opt_vmswap.h" 41 #endif 42 43 struct swapent; 44 45 #if defined(VMSWAP) 46 int uvm_swap_get(struct vm_page *, int, int); 47 int uvm_swap_put(int, struct vm_page **, int, int); 48 int uvm_swap_alloc(int *, bool); 49 void uvm_swap_free(int, int); 50 void uvm_swap_markbad(int, int); 51 bool uvm_swapisfull(void); 52 #else /* defined(VMSWAP) */ 53 #define uvm_swapisfull() true 54 #endif /* defined(VMSWAP) */ 55 void uvm_swap_stats(int, struct swapent *, int, register_t *); 56 57 #endif /* _KERNEL */ 58 59 #endif /* _UVM_UVM_SWAP_H_ */ 60