1*0Sstevel@tonic-gate /* 2*0Sstevel@tonic-gate * CDDL HEADER START 3*0Sstevel@tonic-gate * 4*0Sstevel@tonic-gate * The contents of this file are subject to the terms of the 5*0Sstevel@tonic-gate * Common Development and Distribution License, Version 1.0 only 6*0Sstevel@tonic-gate * (the "License"). You may not use this file except in compliance 7*0Sstevel@tonic-gate * with the License. 8*0Sstevel@tonic-gate * 9*0Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10*0Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing. 11*0Sstevel@tonic-gate * See the License for the specific language governing permissions 12*0Sstevel@tonic-gate * and limitations under the License. 13*0Sstevel@tonic-gate * 14*0Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each 15*0Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16*0Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the 17*0Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying 18*0Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner] 19*0Sstevel@tonic-gate * 20*0Sstevel@tonic-gate * CDDL HEADER END 21*0Sstevel@tonic-gate */ 22*0Sstevel@tonic-gate /* 23*0Sstevel@tonic-gate * Copyright 2005 Sun Microsystems, Inc. All rights reserved. 24*0Sstevel@tonic-gate * Use is subject to license terms. 25*0Sstevel@tonic-gate */ 26*0Sstevel@tonic-gate 27*0Sstevel@tonic-gate /* Copyright (c) 1983, 1984, 1985, 1986, 1987, 1988, 1989 AT&T */ 28*0Sstevel@tonic-gate /* All Rights Reserved */ 29*0Sstevel@tonic-gate 30*0Sstevel@tonic-gate /* 31*0Sstevel@tonic-gate * University Copyright- Copyright (c) 1982, 1986, 1988 32*0Sstevel@tonic-gate * The Regents of the University of California 33*0Sstevel@tonic-gate * All Rights Reserved 34*0Sstevel@tonic-gate * 35*0Sstevel@tonic-gate * University Acknowledgment- Portions of this document are derived from 36*0Sstevel@tonic-gate * software developed by the University of California, Berkeley, and its 37*0Sstevel@tonic-gate * contributors. 38*0Sstevel@tonic-gate */ 39*0Sstevel@tonic-gate 40*0Sstevel@tonic-gate #ifndef _SYS_VMSYSTM_H 41*0Sstevel@tonic-gate #define _SYS_VMSYSTM_H 42*0Sstevel@tonic-gate 43*0Sstevel@tonic-gate #pragma ident "%Z%%M% %I% %E% SMI" 44*0Sstevel@tonic-gate 45*0Sstevel@tonic-gate #include <sys/proc.h> 46*0Sstevel@tonic-gate 47*0Sstevel@tonic-gate #ifdef __cplusplus 48*0Sstevel@tonic-gate extern "C" { 49*0Sstevel@tonic-gate #endif 50*0Sstevel@tonic-gate 51*0Sstevel@tonic-gate /* 52*0Sstevel@tonic-gate * Miscellaneous virtual memory subsystem variables and structures. 53*0Sstevel@tonic-gate */ 54*0Sstevel@tonic-gate #ifdef _KERNEL 55*0Sstevel@tonic-gate extern pgcnt_t freemem; /* remaining blocks of free memory */ 56*0Sstevel@tonic-gate extern pgcnt_t avefree; /* 5 sec moving average of free memory */ 57*0Sstevel@tonic-gate extern pgcnt_t avefree30; /* 30 sec moving average of free memory */ 58*0Sstevel@tonic-gate extern pgcnt_t deficit; /* estimate of needs of new swapped in procs */ 59*0Sstevel@tonic-gate extern pgcnt_t nscan; /* number of scans in last second */ 60*0Sstevel@tonic-gate extern pgcnt_t desscan; /* desired pages scanned per second */ 61*0Sstevel@tonic-gate extern pgcnt_t slowscan; 62*0Sstevel@tonic-gate extern pgcnt_t fastscan; 63*0Sstevel@tonic-gate extern pgcnt_t pushes; /* number of pages pushed to swap device */ 64*0Sstevel@tonic-gate 65*0Sstevel@tonic-gate /* writable copies of tunables */ 66*0Sstevel@tonic-gate extern pgcnt_t maxpgio; /* max paging i/o per sec before start swaps */ 67*0Sstevel@tonic-gate extern pgcnt_t lotsfree; /* max free before clock freezes */ 68*0Sstevel@tonic-gate extern pgcnt_t desfree; /* minimum free pages before swapping begins */ 69*0Sstevel@tonic-gate extern pgcnt_t minfree; /* no of pages to try to keep free via daemon */ 70*0Sstevel@tonic-gate extern pgcnt_t needfree; /* no of pages currently being waited for */ 71*0Sstevel@tonic-gate extern pgcnt_t throttlefree; /* point at which we block PG_WAIT calls */ 72*0Sstevel@tonic-gate extern pgcnt_t pageout_reserve; /* point at which we deny non-PG_WAIT calls */ 73*0Sstevel@tonic-gate extern pgcnt_t pages_before_pager; /* XXX */ 74*0Sstevel@tonic-gate 75*0Sstevel@tonic-gate /* 76*0Sstevel@tonic-gate * TRUE if the pageout daemon, fsflush daemon or the scheduler. These 77*0Sstevel@tonic-gate * processes can't sleep while trying to free up memory since a deadlock 78*0Sstevel@tonic-gate * will occur if they do sleep. 79*0Sstevel@tonic-gate */ 80*0Sstevel@tonic-gate #define NOMEMWAIT() (ttoproc(curthread) == proc_pageout || \ 81*0Sstevel@tonic-gate ttoproc(curthread) == proc_fsflush || \ 82*0Sstevel@tonic-gate ttoproc(curthread) == proc_sched) 83*0Sstevel@tonic-gate 84*0Sstevel@tonic-gate /* insure non-zero */ 85*0Sstevel@tonic-gate #define nz(x) ((x) != 0 ? (x) : 1) 86*0Sstevel@tonic-gate 87*0Sstevel@tonic-gate /* 88*0Sstevel@tonic-gate * Flags passed by the swapper to swapout routines of each 89*0Sstevel@tonic-gate * scheduling class. 90*0Sstevel@tonic-gate */ 91*0Sstevel@tonic-gate #define HARDSWAP 1 92*0Sstevel@tonic-gate #define SOFTSWAP 2 93*0Sstevel@tonic-gate 94*0Sstevel@tonic-gate /* 95*0Sstevel@tonic-gate * Values returned by valid_usr_range() 96*0Sstevel@tonic-gate */ 97*0Sstevel@tonic-gate #define RANGE_OKAY (0) 98*0Sstevel@tonic-gate #define RANGE_BADADDR (1) 99*0Sstevel@tonic-gate #define RANGE_BADPROT (2) 100*0Sstevel@tonic-gate 101*0Sstevel@tonic-gate /* 102*0Sstevel@tonic-gate * map_pgsz: temporary - subject to change. 103*0Sstevel@tonic-gate */ 104*0Sstevel@tonic-gate #define MAPPGSZ_VA 0x01 105*0Sstevel@tonic-gate #define MAPPGSZ_STK 0x02 106*0Sstevel@tonic-gate #define MAPPGSZ_HEAP 0x04 107*0Sstevel@tonic-gate #define MAPPGSZ_ISM 0x08 108*0Sstevel@tonic-gate 109*0Sstevel@tonic-gate struct as; 110*0Sstevel@tonic-gate struct page; 111*0Sstevel@tonic-gate struct anon; 112*0Sstevel@tonic-gate 113*0Sstevel@tonic-gate extern int maxslp; 114*0Sstevel@tonic-gate extern ulong_t pginrate; 115*0Sstevel@tonic-gate extern ulong_t pgoutrate; 116*0Sstevel@tonic-gate extern void swapout_lwp(klwp_t *); 117*0Sstevel@tonic-gate 118*0Sstevel@tonic-gate extern int valid_va_range(caddr_t *basep, size_t *lenp, size_t minlen, 119*0Sstevel@tonic-gate int dir); 120*0Sstevel@tonic-gate extern int valid_usr_range(caddr_t, size_t, uint_t, struct as *, caddr_t); 121*0Sstevel@tonic-gate extern int useracc(void *, size_t, int); 122*0Sstevel@tonic-gate extern size_t map_pgsz(int maptype, struct proc *p, caddr_t addr, 123*0Sstevel@tonic-gate size_t len, int *remap); 124*0Sstevel@tonic-gate extern uint_t map_execseg_pgszcvec(int, caddr_t, size_t); 125*0Sstevel@tonic-gate extern void map_addr(caddr_t *addrp, size_t len, offset_t off, int vacalign, 126*0Sstevel@tonic-gate uint_t flags); 127*0Sstevel@tonic-gate extern int map_addr_vacalign_check(caddr_t, u_offset_t); 128*0Sstevel@tonic-gate extern void map_addr_proc(caddr_t *addrp, size_t len, offset_t off, 129*0Sstevel@tonic-gate int vacalign, caddr_t userlimit, struct proc *p, uint_t flags); 130*0Sstevel@tonic-gate extern void vmmeter(void); 131*0Sstevel@tonic-gate extern int cow_mapin(struct as *, caddr_t, caddr_t, struct page **, 132*0Sstevel@tonic-gate struct anon **, size_t *, int); 133*0Sstevel@tonic-gate 134*0Sstevel@tonic-gate extern caddr_t ppmapin(struct page *, uint_t, caddr_t); 135*0Sstevel@tonic-gate extern void ppmapout(caddr_t); 136*0Sstevel@tonic-gate 137*0Sstevel@tonic-gate extern int pf_is_memory(pfn_t); 138*0Sstevel@tonic-gate extern void pageout_init(void (*proc)(), proc_t *pp, pri_t pri); 139*0Sstevel@tonic-gate 140*0Sstevel@tonic-gate extern void dcache_flushall(void); 141*0Sstevel@tonic-gate 142*0Sstevel@tonic-gate extern void *boot_virt_alloc(void *addr, size_t size); 143*0Sstevel@tonic-gate 144*0Sstevel@tonic-gate #endif /* _KERNEL */ 145*0Sstevel@tonic-gate 146*0Sstevel@tonic-gate #ifdef __cplusplus 147*0Sstevel@tonic-gate } 148*0Sstevel@tonic-gate #endif 149*0Sstevel@tonic-gate 150*0Sstevel@tonic-gate #endif /* _SYS_VMSYSTM_H */ 151