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uvm_swap.h revision 1.26 
      1  1.26  riastrad /*	$NetBSD: uvm_swap.h,v 1.26 2020/09/05 16:30:13 riastradh Exp $	*/
      2   1.1       mrg 
      3   1.1       mrg /*
      4   1.1       mrg  * Copyright (c) 1997 Matthew R. Green
      5   1.1       mrg  * All rights reserved.
      6   1.1       mrg  *
      7   1.1       mrg  * Redistribution and use in source and binary forms, with or without
      8   1.1       mrg  * modification, are permitted provided that the following conditions
      9   1.1       mrg  * are met:
     10   1.1       mrg  * 1. Redistributions of source code must retain the above copyright
     11   1.1       mrg  *    notice, this list of conditions and the following disclaimer.
     12   1.1       mrg  * 2. Redistributions in binary form must reproduce the above copyright
     13   1.1       mrg  *    notice, this list of conditions and the following disclaimer in the
     14   1.1       mrg  *    documentation and/or other materials provided with the distribution.
     15   1.1       mrg  *
     16   1.1       mrg  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     17   1.1       mrg  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     18   1.1       mrg  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     19   1.1       mrg  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     20   1.1       mrg  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
     21   1.1       mrg  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
     22   1.1       mrg  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
     23   1.1       mrg  * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
     24   1.1       mrg  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     25   1.1       mrg  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     26   1.1       mrg  * SUCH DAMAGE.
     27   1.3       mrg  *
     28   1.3       mrg  * from: Id: uvm_swap.h,v 1.1.2.6 1997/12/15 05:39:31 mrg Exp
     29   1.1       mrg  */
     30   1.1       mrg 
     31   1.1       mrg #ifndef _UVM_UVM_SWAP_H_
     32   1.1       mrg #define _UVM_UVM_SWAP_H_
     33   1.1       mrg 
     34   1.5       chs #define	SWSLOT_BAD	(-1)
     35   1.5       chs 
     36  1.22  christos #if defined(_KERNEL) || defined(_MODULE)
     37  1.11      yamt #if defined(_KERNEL_OPT)
     38  1.11      yamt #include "opt_vmswap.h"
     39  1.11      yamt #endif
     40   1.4   thorpej 
     41  1.19  christos struct lwp;
     42   1.6      manu 
     43  1.11      yamt #if defined(VMSWAP)
     44  1.23  christos 
     45  1.23  christos struct swapent;
     46  1.26  riastrad struct vm_page;
     47  1.23  christos 
     48   1.7       mrg int	uvm_swap_get(struct vm_page *, int, int);
     49   1.7       mrg int	uvm_swap_put(int, struct vm_page **, int, int);
     50  1.15   thorpej int	uvm_swap_alloc(int *, bool);
     51   1.7       mrg void	uvm_swap_free(int, int);
     52   1.7       mrg void	uvm_swap_markbad(int, int);
     53  1.15   thorpej bool	uvm_swapisfull(void);
     54  1.21      maxv void	swapsys_lock(krw_t);
     55  1.21      maxv void	swapsys_unlock(void);
     56  1.23  christos int	uvm_swap_stats(char *, int,
     57  1.23  christos     void (*)(void *, const struct swapent *), size_t, register_t *);
     58  1.21      maxv 
     59  1.11      yamt #else /* defined(VMSWAP) */
     60  1.16   thorpej #define	uvm_swapisfull()	true
     61  1.25   mlelstv #define uvm_swap_stats(c, l, f, count, retval) (__used f, *retval = 0, ENOSYS)
     62  1.11      yamt #endif /* defined(VMSWAP) */
     63  1.23  christos 
     64  1.19  christos void	uvm_swap_shutdown(struct lwp *);
     65   1.4   thorpej 
     66  1.22  christos #endif /* _KERNEL || _MODULE */
     67   1.1       mrg 
     68   1.1       mrg #endif /* _UVM_UVM_SWAP_H_ */
     69