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      1 /*	$NetBSD: pdsim.h,v 1.1 2006/10/09 12:32:46 yamt Exp $	*/
      2 
      3 /*-
      4  * Copyright (c)2006 YAMAMOTO Takashi,
      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  *
     16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
     17  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     19  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
     20  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     21  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     22  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     23  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     24  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     25  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     26  * SUCH DAMAGE.
     27  */
     28 
     29 #include <sys/null.h>
     30 #include <sys/hash.h>
     31 #include <sys/queue.h>
     32 #include <assert.h>
     33 #include <stdio.h>
     34 #include <stdlib.h>
     35 #include <string.h>
     36 #include <stdarg.h>
     37 #include <inttypes.h>
     38 
     39 #define	PAGE_SHIFT	12
     40 #define	PAGE_SIZE	(1 << PAGE_SHIFT)
     41 #define	PAGE_MASK	(PAGE_SIZE - 1)
     42 
     43 #define	PDPOL_EVCNT_DEFINE(name)	int pdpol_evcnt_##name = 0;
     44 #define	PDPOL_EVCNT_INCR(ev)		pdpol_evcnt_##ev++
     45 
     46 #define	TRUE	1
     47 #define	FALSE	0
     48 typedef int boolean_t;
     49 typedef off_t voff_t;
     50 
     51 struct vm_page;
     52 struct vm_anon;
     53 
     54 struct uvm_object;
     55 struct vm_anon {
     56 	struct vm_page *an_page; /* XXX */
     57 };
     58 
     59 struct vm_page {
     60 	TAILQ_ENTRY(vm_page) pageq;
     61 	struct uvm_object *uobject;
     62 	off_t offset;
     63 	int pqflags;
     64 #define PQ_SWAPBACKED	(PQ_ANON|PQ_AOBJ)
     65 #define PQ_FREE		0x0001
     66 #define PQ_ANON		0x0002
     67 #define PQ_AOBJ		0x0004
     68 #define PQ_PRIVATE1	0x0100
     69 #define PQ_PRIVATE2	0x0200
     70 #define PQ_PRIVATE3	0x0400
     71 #define PQ_PRIVATE4	0x0800
     72 #define PQ_PRIVATE5	0x1000
     73 #define PQ_PRIVATE6	0x2000
     74 #define PQ_PRIVATE7	0x4000
     75 #define PQ_PRIVATE8	0x8000
     76 
     77 	int _mdflags;
     78 #define	MDPG_REFERENCED		1
     79 #define	MDPG_SPECULATIVE	2
     80 
     81 	/* dummy members */
     82 	struct vm_anon *uanon;
     83 	int wire_count;
     84 	int flags;
     85 #define	PG_BUSY		1
     86 };
     87 
     88 TAILQ_HEAD(pglist, vm_page);
     89 
     90 boolean_t pmap_clear_reference(struct vm_page *);
     91 boolean_t pmap_is_referenced(struct vm_page *);
     92 
     93 struct uvmexp {
     94 	int npages;
     95 	int pdscans;
     96 	int freetarg;
     97 	int free;
     98 
     99 	/* XXX */
    100 	int filepages;
    101 	int execpages;
    102 	int anonpages;
    103 	int pddeact;
    104 	int pdreact;
    105 };
    106 extern struct uvmexp uvmexp;
    107 
    108 #define	UVM_LOCK_ASSERT_PAGEQ()	/* nothing */
    109 #define	KASSERT(x)	assert(x)
    110 
    111 static void panic(const char *, ...) __unused;
    112 static void
    113 panic(const char *fmt, ...)
    114 {
    115 	va_list ap;
    116 
    117 	va_start(ap, fmt);
    118 	vfprintf(stderr, fmt, ap);
    119 	va_end(ap);
    120 	fprintf(stderr, "\n");
    121 	abort();
    122 }
    123 
    124 #define	MAXID	102400
    125 
    126 struct uvm_object {
    127 	struct vm_page *pages[MAXID];
    128 };
    129 
    130 struct uvm_pctparam {
    131 	int pct_pct;
    132 };
    133 #define	UVM_PCTPARAM_APPLY(pct, x) \
    134 	(((x) * (pct)->pct_pct) / 100)
    135 #define	uvm_pctparam_init(pct, x, f)	(pct)->pct_pct = x
    136 
    137 #define	UVM_OBJ_IS_VTEXT(o)	FALSE
    138 #define	UVM_OBJ_IS_AOBJ(o)	FALSE
    139 #define	UVM_OBJ_IS_VNODE(o)	TRUE
    140 
    141 #define	uvm_swapisfull()	TRUE
    142 #define	uvmpd_trydropswap(p)	(panic("dropswap"), 0)
    143 
    144 #define	MAX(a,b)	(((a) > (b)) ? (a) : (b))
    145 #define	MIN(a,b)	(((a) < (b)) ? (a) : (b))
    146 
    147 #if ((__STDC_VERSION__ - 0) >= 199901L)
    148 #define	WARN(...)	fprintf(stderr, __VA_ARGS__)
    149 #else /* ((__STDC_VERSION__ - 0) >= 199901L) */
    150 #define	WARN(a...)	fprintf(stderr, a)
    151 #endif /* ((__STDC_VERSION__ - 0) >= 199901L) */
    152 
    153 #if defined(DEBUG)
    154 #if ((__STDC_VERSION__ - 0) >= 199901L)
    155 #define	DPRINTF(...)	printf(__VA_ARGS__)
    156 #else /* ((__STDC_VERSION__ - 0) >= 199901L) */
    157 #define	DPRINTF(a...)	printf(a)	/* GCC */
    158 #endif /* ((__STDC_VERSION__ - 0) >= 199901L) */
    159 #define	dump(s)		pdsim_dump(s)
    160 void dump(const char *);
    161 #else
    162 #if ((__STDC_VERSION__ - 0) >= 199901L)
    163 #define	DPRINTF(...)	/* nothing */
    164 #else /* ((__STDC_VERSION__ - 0) >= 199901L) */
    165 #define	DPRINTF(a...)	/* nothing */	/* GCC */
    166 #endif /* ((__STDC_VERSION__ - 0) >= 199901L) */
    167 #define	dump(s)		/* nothing */
    168 #endif
    169 
    170 #include "uvm/uvm_pdpolicy.h"
    171