/* $NetBSD: uvm_swap.h,v 1.29 2024/03/15 22:15:21 andvar Exp $ */ /* * Copyright (c) 1997 Matthew R. Green * All rights reserved. * * 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. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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: Id: uvm_swap.h,v 1.1.2.6 1997/12/15 05:39:31 mrg Exp */ #ifndef _UVM_UVM_SWAP_H_ #define _UVM_UVM_SWAP_H_ #define SWSLOT_BAD (-1) #if defined(_KERNEL) || defined(_MODULE) #if defined(_KERNEL_OPT) #include "opt_vmswap.h" #endif struct lwp; struct swapent; #if defined(VMSWAP) struct vm_page; int uvm_swap_get(struct vm_page *, int, int); int uvm_swap_put(int, struct vm_page **, int, int); int uvm_swap_alloc(int *, bool); void uvm_swap_free(int, int); void uvm_swap_markbad(int, int); bool uvm_swapisfull(void); void swapsys_lock(krw_t); void swapsys_unlock(void); int uvm_swap_stats(char *, int, void (*)(void *, const struct swapent *), size_t, register_t *); #else /* defined(VMSWAP) */ #define uvm_swapisfull() true static inline int uvm_swap_stats(char *c, int l, void (*f)(void *, const struct swapent *), size_t count, register_t *retval) { *retval = 0; return ENOSYS; } #endif /* defined(VMSWAP) */ void uvm_swap_shutdown(struct lwp *); #endif /* _KERNEL || _MODULE */ #endif /* _UVM_UVM_SWAP_H_ */