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patch sched-cleanup
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--- old/usr/src/uts/common/sys/vmsystm.h
+++ new/usr/src/uts/common/sys/vmsystm.h
1 1 /*
2 2 * CDDL HEADER START
3 3 *
4 4 * The contents of this file are subject to the terms of the
5 5 * Common Development and Distribution License (the "License").
6 6 * You may not use this file except in compliance with the License.
7 7 *
8 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 9 * or http://www.opensolaris.org/os/licensing.
10 10 * See the License for the specific language governing permissions
11 11 * and limitations under the License.
12 12 *
13 13 * When distributing Covered Code, include this CDDL HEADER in each
14 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 15 * If applicable, add the following below this CDDL HEADER, with the
16 16 * fields enclosed by brackets "[]" replaced with your own identifying
17 17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 18 *
19 19 * CDDL HEADER END
20 20 */
21 21 /*
22 22 * Copyright 2009 Sun Microsystems, Inc. All rights reserved.
23 23 * Use is subject to license terms.
24 24 */
25 25
26 26 /* Copyright (c) 1983, 1984, 1985, 1986, 1987, 1988, 1989 AT&T */
27 27 /* All Rights Reserved */
28 28
29 29 /*
30 30 * University Copyright- Copyright (c) 1982, 1986, 1988
31 31 * The Regents of the University of California
32 32 * All Rights Reserved
33 33 *
34 34 * University Acknowledgment- Portions of this document are derived from
35 35 * software developed by the University of California, Berkeley, and its
36 36 * contributors.
37 37 */
38 38
39 39 #ifndef _SYS_VMSYSTM_H
40 40 #define _SYS_VMSYSTM_H
41 41
42 42 #include <sys/proc.h>
43 43
44 44 #ifdef __cplusplus
45 45 extern "C" {
46 46 #endif
47 47
48 48 /*
49 49 * Miscellaneous virtual memory subsystem variables and structures.
50 50 */
51 51 #ifdef _KERNEL
52 52 extern pgcnt_t freemem; /* remaining blocks of free memory */
53 53 extern pgcnt_t avefree; /* 5 sec moving average of free memory */
54 54 extern pgcnt_t avefree30; /* 30 sec moving average of free memory */
55 55 extern pgcnt_t deficit; /* estimate of needs of new swapped in procs */
56 56 extern pgcnt_t nscan; /* number of scans in last second */
57 57 extern pgcnt_t desscan; /* desired pages scanned per second */
58 58 extern pgcnt_t slowscan;
59 59 extern pgcnt_t fastscan;
60 60 extern pgcnt_t pushes; /* number of pages pushed to swap device */
61 61
62 62 /* writable copies of tunables */
63 63 extern pgcnt_t maxpgio; /* max paging i/o per sec before start swaps */
64 64 extern pgcnt_t lotsfree; /* max free before clock freezes */
65 65 extern pgcnt_t desfree; /* minimum free pages before swapping begins */
66 66 extern pgcnt_t minfree; /* no of pages to try to keep free via daemon */
67 67 extern pgcnt_t needfree; /* no of pages currently being waited for */
68 68 extern pgcnt_t throttlefree; /* point at which we block PG_WAIT calls */
69 69 extern pgcnt_t pageout_reserve; /* point at which we deny non-PG_WAIT calls */
70 70 extern pgcnt_t pages_before_pager; /* XXX */
71 71
72 72 /*
73 73 * TRUE if the pageout daemon, fsflush daemon or the scheduler. These
74 74 * processes can't sleep while trying to free up memory since a deadlock
75 75 * will occur if they do sleep.
76 76 */
77 77 #define NOMEMWAIT() (ttoproc(curthread) == proc_pageout || \
78 78 ttoproc(curthread) == proc_fsflush || \
79 79 ttoproc(curthread) == proc_sched)
80 80
81 81 /* insure non-zero */
82 82 #define nz(x) ((x) != 0 ? (x) : 1)
83 83
84 84 /*
85 85 * Flags passed by the swapper to swapout routines of each
86 86 * scheduling class.
87 87 */
88 88 #define HARDSWAP 1
89 89 #define SOFTSWAP 2
90 90
91 91 /*
92 92 * Values returned by valid_usr_range()
93 93 */
94 94 #define RANGE_OKAY (0)
95 95 #define RANGE_BADADDR (1)
96 96 #define RANGE_BADPROT (2)
97 97
98 98 /*
99 99 * map_pgsz: temporary - subject to change.
100 100 */
101 101 #define MAPPGSZ_VA 0x01
102 102 #define MAPPGSZ_STK 0x02
103 103 #define MAPPGSZ_HEAP 0x04
104 104 #define MAPPGSZ_ISM 0x08
105 105
106 106 /*
107 107 * Flags for map_pgszcvec
108 108 */
109 109 #define MAPPGSZC_SHM 0x01
110 110 #define MAPPGSZC_PRIVM 0x02
111 111 #define MAPPGSZC_STACK 0x04
112 112 #define MAPPGSZC_HEAP 0x08
113 113
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114 114 /*
115 115 * vacalign values for choose_addr
116 116 */
117 117 #define ADDR_NOVACALIGN 0
118 118 #define ADDR_VACALIGN 1
119 119
120 120 struct as;
121 121 struct page;
122 122 struct anon;
123 123
124 -extern int maxslp;
125 124 extern ulong_t pginrate;
126 125 extern ulong_t pgoutrate;
127 -extern void swapout_lwp(klwp_t *);
128 126
129 127 extern int valid_va_range(caddr_t *basep, size_t *lenp, size_t minlen,
130 128 int dir);
131 129 extern int valid_va_range_aligned(caddr_t *basep, size_t *lenp,
132 130 size_t minlen, int dir, size_t align, size_t redzone, size_t off);
133 131
134 132 extern int valid_usr_range(caddr_t, size_t, uint_t, struct as *, caddr_t);
135 133 extern int useracc(void *, size_t, int);
136 134 extern size_t map_pgsz(int maptype, struct proc *p, caddr_t addr, size_t len,
137 135 int memcntl);
138 136 extern uint_t map_pgszcvec(caddr_t addr, size_t size, uintptr_t off, int flags,
139 137 int type, int memcntl);
140 138 extern int choose_addr(struct as *as, caddr_t *addrp, size_t len, offset_t off,
141 139 int vacalign, uint_t flags);
142 140 extern void map_addr(caddr_t *addrp, size_t len, offset_t off, int vacalign,
143 141 uint_t flags);
144 142 extern int map_addr_vacalign_check(caddr_t, u_offset_t);
145 143 extern void map_addr_proc(caddr_t *addrp, size_t len, offset_t off,
146 144 int vacalign, caddr_t userlimit, struct proc *p, uint_t flags);
147 145 extern void vmmeter(void);
148 146 extern int cow_mapin(struct as *, caddr_t, caddr_t, struct page **,
149 147 struct anon **, size_t *, int);
150 148
151 149 extern caddr_t ppmapin(struct page *, uint_t, caddr_t);
152 150 extern void ppmapout(caddr_t);
153 151
154 152 extern int pf_is_memory(pfn_t);
155 153
156 154 extern void dcache_flushall(void);
157 155
158 156 extern void *boot_virt_alloc(void *addr, size_t size);
159 157
160 158 extern size_t exec_get_spslew(void);
161 159
162 160 #endif /* _KERNEL */
163 161
164 162 #ifdef __cplusplus
165 163 }
166 164 #endif
167 165
168 166 #endif /* _SYS_VMSYSTM_H */
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