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/* $NetBSD: uvm_extern.h,v 1.128 2007/03/04 06:03:48 christos Exp $ */
/*
*
* Copyright (c) 1997 Charles D. Cranor and Washington University.
* 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.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Charles D. Cranor and
* Washington University.
* 4. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* 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_extern.h,v 1.1.2.21 1998/02/07 01:16:53 chs Exp
*/
/*-
* Copyright (c) 1991, 1992, 1993
* The Regents of the University of California. 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.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``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 REGENTS OR CONTRIBUTORS 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.
*
* @(#)vm_extern.h 8.5 (Berkeley) 5/3/95
*/
#ifndef _UVM_UVM_EXTERN_H_
#define _UVM_UVM_EXTERN_H_
/*
* uvm_extern.h: this file defines the external interface to the VM system.
*
* this should be the only file included by non-VM parts of the kernel
* which need access to VM services. if you want to know the interface
* to the MI VM layer without knowing the details, this is the file to
* learn.
*
* NOTE: vm system calls are prototyped in syscallargs.h
*/
/*
* typedefs, necessary for standard UVM headers.
*/
typedef unsigned int uvm_flag_t;
typedef int vm_inherit_t; /* XXX: inheritance codes */
typedef off_t voff_t; /* XXX: offset within a uvm_object */
typedef voff_t pgoff_t; /* XXX: number of pages within a uvm object */
/*
* defines
*/
/*
* the following defines are for uvm_map and functions which call it.
*/
/* protections bits */
#define UVM_PROT_MASK 0x07 /* protection mask */
#define UVM_PROT_NONE 0x00 /* protection none */
#define UVM_PROT_ALL 0x07 /* everything */
#define UVM_PROT_READ 0x01 /* read */
#define UVM_PROT_WRITE 0x02 /* write */
#define UVM_PROT_EXEC 0x04 /* exec */
/* protection short codes */
#define UVM_PROT_R 0x01 /* read */
#define UVM_PROT_W 0x02 /* write */
#define UVM_PROT_RW 0x03 /* read-write */
#define UVM_PROT_X 0x04 /* exec */
#define UVM_PROT_RX 0x05 /* read-exec */
#define UVM_PROT_WX 0x06 /* write-exec */
#define UVM_PROT_RWX 0x07 /* read-write-exec */
/* 0x08: not used */
/* inherit codes */
#define UVM_INH_MASK 0x30 /* inherit mask */
#define UVM_INH_SHARE 0x00 /* "share" */
#define UVM_INH_COPY 0x10 /* "copy" */
#define UVM_INH_NONE 0x20 /* "none" */
#define UVM_INH_DONATE 0x30 /* "donate" << not used */
/* 0x40, 0x80: not used */
/* bits 0x700: max protection, 0x800: not used */
/* bits 0x7000: advice, 0x8000: not used */
/* advice: matches MADV_* from sys/mman.h and POSIX_FADV_* from sys/fcntl.h */
#define UVM_ADV_NORMAL 0x0 /* 'normal' */
#define UVM_ADV_RANDOM 0x1 /* 'random' */
#define UVM_ADV_SEQUENTIAL 0x2 /* 'sequential' */
/* 0x3: will need, 0x4: dontneed */
#define UVM_ADV_MASK 0x7 /* mask */
/* bits 0xffff0000: mapping flags */
#define UVM_FLAG_FIXED 0x010000 /* find space */
#define UVM_FLAG_OVERLAY 0x020000 /* establish overlay */
#define UVM_FLAG_NOMERGE 0x040000 /* don't merge map entries */
#define UVM_FLAG_COPYONW 0x080000 /* set copy_on_write flag */
#define UVM_FLAG_AMAPPAD 0x100000 /* for bss: pad amap to reduce malloc() */
#define UVM_FLAG_TRYLOCK 0x200000 /* fail if we can not lock map */
#define UVM_FLAG_NOWAIT 0x400000 /* not allowed to sleep */
#define UVM_FLAG_QUANTUM 0x800000 /* entry never be splitted later */
#define UVM_FLAG_WAITVA 0x1000000 /* wait for va */
#define UVM_FLAG_VAONLY 0x2000000 /* unmap: no pages are mapped */
/* macros to extract info */
#define UVM_PROTECTION(X) ((X) & UVM_PROT_MASK)
#define UVM_INHERIT(X) (((X) & UVM_INH_MASK) >> 4)
#define UVM_MAXPROTECTION(X) (((X) >> 8) & UVM_PROT_MASK)
#define UVM_ADVICE(X) (((X) >> 12) & UVM_ADV_MASK)
#define UVM_MAPFLAG(PROT,MAXPROT,INH,ADVICE,FLAGS) \
(((MAXPROT) << 8)|(PROT)|(INH)|((ADVICE) << 12)|(FLAGS))
/* magic offset value: offset not known(obj) or don't care(!obj) */
#define UVM_UNKNOWN_OFFSET ((voff_t) -1)
/*
* the following defines are for uvm_km_alloc/free's flags
*/
#define UVM_KMF_WIRED 0x1 /* allocation type: wired */
#define UVM_KMF_PAGEABLE 0x2 /* allocation type: pageable */
#define UVM_KMF_VAONLY 0x4 /* allocation type: VA only */
#define UVM_KMF_TYPEMASK (UVM_KMF_VAONLY | UVM_KMF_PAGEABLE | UVM_KMF_WIRED)
#define UVM_KMF_CANFAIL 0x8 /* caller handles failure */
#define UVM_KMF_ZERO 0x10 /* want zero filled memory */
#define UVM_KMF_EXEC 0x20 /* need executable mapping */
#define UVM_KMF_TRYLOCK UVM_FLAG_TRYLOCK /* try locking only */
#define UVM_KMF_NOWAIT UVM_FLAG_NOWAIT /* not allowed to sleep */
#define UVM_KMF_WAITVA UVM_FLAG_WAITVA /* sleep for va */
/*
* the following defines the strategies for uvm_pagealloc_strat()
*/
#define UVM_PGA_STRAT_NORMAL 0 /* high -> low free list walk */
#define UVM_PGA_STRAT_ONLY 1 /* only specified free list */
#define UVM_PGA_STRAT_FALLBACK 2 /* ONLY falls back on NORMAL */
/*
* flags for uvm_pagealloc_strat()
*/
#define UVM_PGA_USERESERVE 0x0001 /* ok to use reserve pages */
#define UVM_PGA_ZERO 0x0002 /* returned page must be zero'd */
/*
* flags for ubc_alloc()
*/
#define UBC_READ 0x01
#define UBC_WRITE 0x02
#define UBC_FAULTBUSY 0x04
/*
* flags for ubc_release()
*/
#define UBC_UNMAP 0x01
/*
* helpers for calling ubc_release()
*/
#ifdef PMAP_CACHE_VIVT
#define UBC_WANT_UNMAP(vp) (((vp)->v_flag & VTEXT) != 0)
#else
#define UBC_WANT_UNMAP(vp) false
#endif
/*
* flags for uvn_findpages().
*/
#define UFP_ALL 0x00
#define UFP_NOWAIT 0x01
#define UFP_NOALLOC 0x02
#define UFP_NOCACHE 0x04
#define UFP_NORDONLY 0x08
#define UFP_DIRTYONLY 0x10
#define UFP_BACKWARD 0x20
/*
* lockflags that control the locking behavior of various functions.
*/
#define UVM_LK_ENTER 0x00000001 /* map locked on entry */
#define UVM_LK_EXIT 0x00000002 /* leave map locked on exit */
/*
* structures
*/
struct buf;
struct core;
struct loadavg;
struct mount;
struct pglist;
struct proc;
struct uio;
struct uvm_object;
struct vm_anon;
struct vmspace;
struct pmap;
struct vnode;
struct pool;
struct simplelock;
struct vm_map_entry;
struct vm_map;
struct vm_page;
struct vmtotal;
/*
* uvm_pctparam: parameter to be shown as percentage to user.
*/
#define UVM_PCTPARAM_SHIFT 8
#define UVM_PCTPARAM_SCALE (1 << UVM_PCTPARAM_SHIFT)
#define UVM_PCTPARAM_APPLY(pct, x) \
(((x) * (pct)->pct_scaled) >> UVM_PCTPARAM_SHIFT)
struct uvm_pctparam {
int pct_pct; /* percent [0, 100] */ /* should be the first member */
int pct_scaled;
int (*pct_check)(struct uvm_pctparam *, int);
};
/*
* uvmexp: global data structures that are exported to parts of the kernel
* other than the vm system.
*/
struct uvmexp {
/* vm_page constants */
int pagesize; /* size of a page (PAGE_SIZE): must be power of 2 */
int pagemask; /* page mask */
int pageshift; /* page shift */
/* vm_page counters */
int npages; /* number of pages we manage */
int free; /* number of free pages */
int paging; /* number of pages in the process of being paged out */
int wired; /* number of wired pages */
/*
* Adding anything before this line will break binary compatibility
* with top(1) on NetBSD 1.5.
*/
int ncolors; /* number of page color buckets: must be p-o-2 */
int colormask; /* color bucket mask */
int zeropages; /* number of zero'd pages */
int reserve_pagedaemon; /* number of pages reserved for pagedaemon */
int reserve_kernel; /* number of pages reserved for kernel */
int anonpages; /* number of pages used by anon mappings */
int filepages; /* number of pages used by cached file data */
int execpages; /* number of pages used by cached exec data */
/* pageout params */
int freemin; /* min number of free pages */
int freetarg; /* target number of free pages */
int wiredmax; /* max number of wired pages */
/* swap */
int nswapdev; /* number of configured swap devices in system */
int swpages; /* number of PAGE_SIZE'ed swap pages */
int swpgavail; /* number of swap pages currently available */
int swpginuse; /* number of swap pages in use */
int swpgonly; /* number of swap pages in use, not also in RAM */
int nswget; /* number of times fault calls uvm_swap_get() */
/* stat counters. XXX: should be 64-bit counters */
int faults; /* page fault count */
int traps; /* trap count */
int intrs; /* interrupt count */
int swtch; /* context switch count */
int softs; /* software interrupt count */
int syscalls; /* system calls */
int pageins; /* pagein operation count */
/* pageouts are in pdpageouts below */
int swapins; /* swapins */
int swapouts; /* swapouts */
int pgswapin; /* pages swapped in */
int pgswapout; /* pages swapped out */
int forks; /* forks */
int forks_ppwait; /* forks where parent waits */
int forks_sharevm; /* forks where vmspace is shared */
int pga_zerohit; /* pagealloc where zero wanted and zero
was available */
int pga_zeromiss; /* pagealloc where zero wanted and zero
not available */
int zeroaborts; /* number of times page zeroing was
aborted */
int colorhit; /* pagealloc where we got optimal color */
int colormiss; /* pagealloc where we didn't */
/* fault subcounters. XXX: should be 64-bit counters */
int fltnoram; /* number of times fault was out of ram */
int fltnoanon; /* number of times fault was out of anons */
int fltpgwait; /* number of times fault had to wait on a page */
int fltpgrele; /* number of times fault found a released page */
int fltrelck; /* number of times fault relock called */
int fltrelckok; /* number of times fault relock is a success */
int fltanget; /* number of times fault gets anon page */
int fltanretry; /* number of times fault retrys an anon get */
int fltamcopy; /* number of times fault clears "needs copy" */
int fltnamap; /* number of times fault maps a neighbor anon page */
int fltnomap; /* number of times fault maps a neighbor obj page */
int fltlget; /* number of times fault does a locked pgo_get */
int fltget; /* number of times fault does an unlocked get */
int flt_anon; /* number of times fault anon (case 1a) */
int flt_acow; /* number of times fault anon cow (case 1b) */
int flt_obj; /* number of times fault is on object page (2a) */
int flt_prcopy; /* number of times fault promotes with copy (2b) */
int flt_przero; /* number of times fault promotes with zerofill (2b) */
/* daemon counters. XXX: should be 64-bit counters */
int pdwoke; /* number of times daemon woke up */
int pdrevs; /* number of times daemon rev'd clock hand */
int pdswout; /* number of times daemon called for swapout */
int pdfreed; /* number of pages daemon freed since boot */
int pdscans; /* number of pages daemon scanned since boot */
int pdanscan; /* number of anonymous pages scanned by daemon */
int pdobscan; /* number of object pages scanned by daemon */
int pdreact; /* number of pages daemon reactivated since boot */
int pdbusy; /* number of times daemon found a busy page */
int pdpageouts; /* number of times daemon started a pageout */
int pdpending; /* number of times daemon got a pending pagout */
int pddeact; /* number of pages daemon deactivates */
int pdreanon; /* anon pages reactivated due to thresholds */
int pdrefile; /* file pages reactivated due to thresholds */
int pdreexec; /* executable pages reactivated due to thresholds */
};
/*
* The following structure is 64-bit alignment safe. New elements
* should only be added to the end of this structure so binary
* compatibility can be preserved.
*/
struct uvmexp_sysctl {
int64_t pagesize;
int64_t pagemask;
int64_t pageshift;
int64_t npages;
int64_t free;
int64_t active;
int64_t inactive;
int64_t paging;
int64_t wired;
int64_t zeropages;
int64_t reserve_pagedaemon;
int64_t reserve_kernel;
int64_t freemin;
int64_t freetarg;
int64_t inactarg; /* unused */
int64_t wiredmax;
int64_t nswapdev;
int64_t swpages;
int64_t swpginuse;
int64_t swpgonly;
int64_t nswget;
int64_t unused1; /* used to be nanon */
int64_t unused2; /* used to be nanonneeded */
int64_t unused3; /* used to be nfreeanon */
int64_t faults;
int64_t traps;
int64_t intrs;
int64_t swtch;
int64_t softs;
int64_t syscalls;
int64_t pageins;
int64_t swapins;
int64_t swapouts;
int64_t pgswapin;
int64_t pgswapout;
int64_t forks;
int64_t forks_ppwait;
int64_t forks_sharevm;
int64_t pga_zerohit;
int64_t pga_zeromiss;
int64_t zeroaborts;
int64_t fltnoram;
int64_t fltnoanon;
int64_t fltpgwait;
int64_t fltpgrele;
int64_t fltrelck;
int64_t fltrelckok;
int64_t fltanget;
int64_t fltanretry;
int64_t fltamcopy;
int64_t fltnamap;
int64_t fltnomap;
int64_t fltlget;
int64_t fltget;
int64_t flt_anon;
int64_t flt_acow;
int64_t flt_obj;
int64_t flt_prcopy;
int64_t flt_przero;
int64_t pdwoke;
int64_t pdrevs;
int64_t pdswout;
int64_t pdfreed;
int64_t pdscans;
int64_t pdanscan;
int64_t pdobscan;
int64_t pdreact;
int64_t pdbusy;
int64_t pdpageouts;
int64_t pdpending;
int64_t pddeact;
int64_t anonpages;
int64_t filepages;
int64_t execpages;
int64_t colorhit;
int64_t colormiss;
int64_t ncolors;
};
#ifdef _KERNEL
/* we need this before including uvm_page.h on some platforms */
extern struct uvmexp uvmexp;
#endif
/*
* Finally, bring in standard UVM headers.
*/
#include <sys/vmmeter.h>
#include <sys/queue.h>
#include <sys/lock.h>
#include <uvm/uvm_param.h>
#include <uvm/uvm_prot.h>
#include <uvm/uvm_page.h>
#include <uvm/uvm_pmap.h>
#include <uvm/uvm_map.h>
#include <uvm/uvm_pager.h>
/*
* Shareable process virtual address space.
* May eventually be merged with vm_map.
* Several fields are temporary (text, data stuff).
*/
struct vmspace {
struct vm_map vm_map; /* VM address map */
int vm_refcnt; /* number of references *
* note: protected by vm_map.ref_lock */
void * vm_shm; /* SYS5 shared memory private data XXX */
/* we copy from vm_startcopy to the end of the structure on fork */
#define vm_startcopy vm_rssize
segsz_t vm_rssize; /* current resident set size in pages */
segsz_t vm_swrss; /* resident set size before last swap */
segsz_t vm_tsize; /* text size (pages) XXX */
segsz_t vm_dsize; /* data size (pages) XXX */
segsz_t vm_ssize; /* stack size (pages) */
void * vm_taddr; /* user virtual address of text XXX */
void * vm_daddr; /* user virtual address of data XXX */
void *vm_maxsaddr; /* user VA at max stack growth */
void *vm_minsaddr; /* user VA at top of stack */
};
#define VMSPACE_IS_KERNEL_P(vm) VM_MAP_IS_KERNEL(&(vm)->vm_map)
#ifdef _KERNEL
extern struct pool *uvm_aiobuf_pool;
/*
* used to keep state while iterating over the map for a core dump.
*/
struct uvm_coredump_state {
void *cookie; /* opaque for the caller */
vaddr_t start; /* start of region */
vaddr_t realend; /* real end of region */
vaddr_t end; /* virtual end of region */
vm_prot_t prot; /* protection of region */
int flags; /* flags; see below */
};
#define UVM_COREDUMP_STACK 0x01 /* region is user stack */
/*
* the various kernel maps, owned by MD code
*/
extern struct vm_map *exec_map;
extern struct vm_map *kernel_map;
extern struct vm_map *kmem_map;
extern struct vm_map *mb_map;
extern struct vm_map *phys_map;
/*
* macros
*/
#define vm_resident_count(vm) (pmap_resident_count((vm)->vm_map.pmap))
#include <sys/mallocvar.h>
MALLOC_DECLARE(M_VMMAP);
MALLOC_DECLARE(M_VMPMAP);
/* vm_machdep.c */
void vmapbuf(struct buf *, vsize_t);
void vunmapbuf(struct buf *, vsize_t);
#ifndef cpu_swapin
void cpu_swapin(struct lwp *);
#endif
#ifndef cpu_swapout
void cpu_swapout(struct lwp *);
#endif
/* uvm_aobj.c */
struct uvm_object *uao_create(vsize_t, int);
void uao_detach(struct uvm_object *);
void uao_detach_locked(struct uvm_object *);
void uao_reference(struct uvm_object *);
void uao_reference_locked(struct uvm_object *);
/* uvm_bio.c */
void ubc_init(void);
void * ubc_alloc(struct uvm_object *, voff_t, vsize_t *, int,
int);
void ubc_release(void *, int);
void ubc_flush(struct uvm_object *, voff_t, voff_t);
/* uvm_fault.c */
#define uvm_fault(m, a, p) uvm_fault_internal(m, a, p, 0)
int uvm_fault_internal(struct vm_map *, vaddr_t, vm_prot_t, int);
/* handle a page fault */
/* uvm_glue.c */
#if defined(KGDB)
void uvm_chgkprot(void *, size_t, int);
#endif
void uvm_proc_fork(struct proc *, struct proc *, bool);
void uvm_lwp_fork(struct lwp *, struct lwp *,
void *, size_t, void (*)(void *), void *);
int uvm_coredump_walkmap(struct proc *,
void *,
int (*)(struct proc *, void *,
struct uvm_coredump_state *), void *);
void uvm_proc_exit(struct proc *);
void uvm_lwp_exit(struct lwp *);
void uvm_init_limits(struct proc *);
bool uvm_kernacc(void *, size_t, int);
__dead void uvm_scheduler(void) __attribute__((noreturn));
void uvm_kick_scheduler(void);
void uvm_swapin(struct lwp *);
bool uvm_uarea_alloc(vaddr_t *);
void uvm_uarea_drain(bool);
int uvm_vslock(struct vmspace *, void *, size_t, vm_prot_t);
void uvm_vsunlock(struct vmspace *, void *, size_t);
/* uvm_init.c */
void uvm_init(void);
/* uvm_io.c */
int uvm_io(struct vm_map *, struct uio *);
/* uvm_km.c */
vaddr_t uvm_km_alloc(struct vm_map *, vsize_t, vsize_t,
uvm_flag_t);
void uvm_km_free(struct vm_map *, vaddr_t, vsize_t,
uvm_flag_t);
struct vm_map *uvm_km_suballoc(struct vm_map *, vaddr_t *,
vaddr_t *, vsize_t, int, bool,
struct vm_map_kernel *);
vaddr_t uvm_km_alloc_poolpage(struct vm_map *, bool);
void uvm_km_free_poolpage(struct vm_map *, vaddr_t);
vaddr_t uvm_km_alloc_poolpage_cache(struct vm_map *, bool);
void uvm_km_free_poolpage_cache(struct vm_map *, vaddr_t);
void uvm_km_vacache_init(struct vm_map *,
const char *, size_t);
/* uvm_map.c */
int uvm_map(struct vm_map *, vaddr_t *, vsize_t,
struct uvm_object *, voff_t, vsize_t,
uvm_flag_t);
int uvm_map_pageable(struct vm_map *, vaddr_t,
vaddr_t, bool, int);
int uvm_map_pageable_all(struct vm_map *, int, vsize_t);
bool uvm_map_checkprot(struct vm_map *, vaddr_t,
vaddr_t, vm_prot_t);
int uvm_map_protect(struct vm_map *, vaddr_t,
vaddr_t, vm_prot_t, bool);
struct vmspace *uvmspace_alloc(vaddr_t, vaddr_t);
void uvmspace_init(struct vmspace *, struct pmap *,
vaddr_t, vaddr_t);
void uvmspace_exec(struct lwp *, vaddr_t, vaddr_t);
struct vmspace *uvmspace_fork(struct vmspace *);
void uvmspace_addref(struct vmspace *);
void uvmspace_free(struct vmspace *);
void uvmspace_share(struct proc *, struct proc *);
void uvmspace_unshare(struct lwp *);
/* uvm_meter.c */
void uvm_meter(void);
int uvm_sysctl(int *, u_int, void *, size_t *,
void *, size_t, struct proc *);
int uvm_pctparam_check(struct uvm_pctparam *, int);
void uvm_pctparam_set(struct uvm_pctparam *, int);
int uvm_pctparam_get(struct uvm_pctparam *);
void uvm_pctparam_init(struct uvm_pctparam *, int,
int (*)(struct uvm_pctparam *, int));
int uvm_pctparam_createsysctlnode(struct uvm_pctparam *,
const char *, const char *);
/* uvm_mmap.c */
int uvm_mmap(struct vm_map *, vaddr_t *, vsize_t,
vm_prot_t, vm_prot_t, int,
void *, voff_t, vsize_t);
vaddr_t uvm_default_mapaddr(struct proc *, vaddr_t, vsize_t);
/* uvm_mremap.c */
int uvm_mremap(struct vm_map *, vaddr_t, vsize_t,
struct vm_map *, vaddr_t *, vsize_t,
struct proc *, int);
#define UVM_MREMAP_FIXED 1
/* uvm_object.c */
int uobj_wirepages(struct uvm_object *uobj, off_t start,
off_t end);
void uobj_unwirepages(struct uvm_object *uobj, off_t start,
off_t end);
/* uvm_page.c */
struct vm_page *uvm_pagealloc_strat(struct uvm_object *,
voff_t, struct vm_anon *, int, int, int);
#define uvm_pagealloc(obj, off, anon, flags) \
uvm_pagealloc_strat((obj), (off), (anon), (flags), \
UVM_PGA_STRAT_NORMAL, 0)
void uvm_pagereplace(struct vm_page *,
struct vm_page *);
void uvm_pagerealloc(struct vm_page *,
struct uvm_object *, voff_t);
/* Actually, uvm_page_physload takes PF#s which need their own type */
void uvm_page_physload(paddr_t, paddr_t, paddr_t,
paddr_t, int);
void uvm_setpagesize(void);
/* uvm_pager.c */
void uvm_aio_biodone1(struct buf *);
void uvm_aio_biodone(struct buf *);
void uvm_aio_aiodone(struct buf *);
/* uvm_pdaemon.c */
void uvm_pageout(void *);
struct work;
void uvm_aiodone_worker(struct work *, void *);
void uvm_estimatepageable(int *, int *);
/* uvm_pglist.c */
int uvm_pglistalloc(psize_t, paddr_t, paddr_t,
paddr_t, paddr_t, struct pglist *, int, int);
void uvm_pglistfree(struct pglist *);
/* uvm_swap.c */
void uvm_swap_init(void);
/* uvm_unix.c */
int uvm_grow(struct proc *, vaddr_t);
/* uvm_user.c */
void uvm_deallocate(struct vm_map *, vaddr_t, vsize_t);
/* uvm_vnode.c */
void uvm_vnp_setsize(struct vnode *, voff_t);
void uvm_vnp_sync(struct mount *);
struct uvm_object *uvn_attach(void *, vm_prot_t);
int uvn_findpages(struct uvm_object *, voff_t,
int *, struct vm_page **, int);
void uvm_vnp_zerorange(struct vnode *, off_t, size_t);
bool uvn_text_p(struct uvm_object *);
bool uvn_clean_p(struct uvm_object *);
bool uvn_needs_writefault_p(struct uvm_object *);
/* kern_malloc.c */
void kmeminit_nkmempages(void);
void kmeminit(void);
extern int nkmempages;
#endif /* _KERNEL */
#endif /* _UVM_UVM_EXTERN_H_ */
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