xref: /netbsd-src/sys/uvm/uvm_extern.h (revision 8a8f936f250a330d54f8a24ed0e92aadf9743a7b)
1 /*	$NetBSD: uvm_extern.h,v 1.67 2001/09/15 20:36:45 chs Exp $	*/
2 
3 /*
4  *
5  * Copyright (c) 1997 Charles D. Cranor and Washington University.
6  * All rights reserved.
7  *
8  * Redistribution and use in source and binary forms, with or without
9  * modification, are permitted provided that the following conditions
10  * are met:
11  * 1. Redistributions of source code must retain the above copyright
12  *    notice, this list of conditions and the following disclaimer.
13  * 2. Redistributions in binary form must reproduce the above copyright
14  *    notice, this list of conditions and the following disclaimer in the
15  *    documentation and/or other materials provided with the distribution.
16  * 3. All advertising materials mentioning features or use of this software
17  *    must display the following acknowledgement:
18  *      This product includes software developed by Charles D. Cranor and
19  *      Washington University.
20  * 4. The name of the author may not be used to endorse or promote products
21  *    derived from this software without specific prior written permission.
22  *
23  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
24  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
25  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
26  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
27  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
28  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
29  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
30  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
31  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
32  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
33  *
34  * from: Id: uvm_extern.h,v 1.1.2.21 1998/02/07 01:16:53 chs Exp
35  */
36 
37 /*-
38  * Copyright (c) 1991, 1992, 1993
39  *	The Regents of the University of California.  All rights reserved.
40  *
41  * Redistribution and use in source and binary forms, with or without
42  * modification, are permitted provided that the following conditions
43  * are met:
44  * 1. Redistributions of source code must retain the above copyright
45  *    notice, this list of conditions and the following disclaimer.
46  * 2. Redistributions in binary form must reproduce the above copyright
47  *    notice, this list of conditions and the following disclaimer in the
48  *    documentation and/or other materials provided with the distribution.
49  * 3. All advertising materials mentioning features or use of this software
50  *    must display the following acknowledgement:
51  *	This product includes software developed by the University of
52  *	California, Berkeley and its contributors.
53  * 4. Neither the name of the University nor the names of its contributors
54  *    may be used to endorse or promote products derived from this software
55  *    without specific prior written permission.
56  *
57  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
58  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
59  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
60  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
61  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
62  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
63  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
64  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
65  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
66  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
67  * SUCH DAMAGE.
68  *
69  *	@(#)vm_extern.h	8.5 (Berkeley) 5/3/95
70  */
71 
72 #ifndef _UVM_UVM_EXTERN_H_
73 #define _UVM_UVM_EXTERN_H_
74 
75 /*
76  * uvm_extern.h: this file defines the external interface to the VM system.
77  *
78  * this should be the only file included by non-VM parts of the kernel
79  * which need access to VM services.   if you want to know the interface
80  * to the MI VM layer without knowing the details, this is the file to
81  * learn.
82  *
83  * NOTE: vm system calls are prototyped in syscallargs.h
84  */
85 
86 /*
87  * typedefs, necessary for standard UVM headers.
88  */
89 
90 typedef unsigned int uvm_flag_t;
91 typedef int vm_fault_t;
92 
93 typedef int vm_inherit_t;	/* XXX: inheritance codes */
94 typedef off_t voff_t;		/* XXX: offset within a uvm_object */
95 
96 /*
97  * defines
98  */
99 
100 /*
101  * the following defines are for uvm_map and functions which call it.
102  */
103 
104 /* protections bits */
105 #define UVM_PROT_MASK	0x07	/* protection mask */
106 #define UVM_PROT_NONE	0x00	/* protection none */
107 #define UVM_PROT_ALL	0x07	/* everything */
108 #define UVM_PROT_READ	0x01	/* read */
109 #define UVM_PROT_WRITE  0x02	/* write */
110 #define UVM_PROT_EXEC	0x04	/* exec */
111 
112 /* protection short codes */
113 #define UVM_PROT_R	0x01	/* read */
114 #define UVM_PROT_W	0x02	/* write */
115 #define UVM_PROT_RW	0x03    /* read-write */
116 #define UVM_PROT_X	0x04	/* exec */
117 #define UVM_PROT_RX	0x05	/* read-exec */
118 #define UVM_PROT_WX	0x06	/* write-exec */
119 #define UVM_PROT_RWX	0x07	/* read-write-exec */
120 
121 /* 0x08: not used */
122 
123 /* inherit codes */
124 #define UVM_INH_MASK	0x30	/* inherit mask */
125 #define UVM_INH_SHARE	0x00	/* "share" */
126 #define UVM_INH_COPY	0x10	/* "copy" */
127 #define UVM_INH_NONE	0x20	/* "none" */
128 #define UVM_INH_DONATE	0x30	/* "donate" << not used */
129 
130 /* 0x40, 0x80: not used */
131 
132 /* bits 0x700: max protection, 0x800: not used */
133 
134 /* bits 0x7000: advice, 0x8000: not used */
135 /* advice: matches MADV_* from sys/mman.h */
136 #define UVM_ADV_NORMAL	0x0	/* 'normal' */
137 #define UVM_ADV_RANDOM	0x1	/* 'random' */
138 #define UVM_ADV_SEQUENTIAL 0x2	/* 'sequential' */
139 /* 0x3: will need, 0x4: dontneed */
140 #define UVM_ADV_MASK	0x7	/* mask */
141 
142 /* mapping flags */
143 #define UVM_FLAG_FIXED   0x010000 /* find space */
144 #define UVM_FLAG_OVERLAY 0x020000 /* establish overlay */
145 #define UVM_FLAG_NOMERGE 0x040000 /* don't merge map entries */
146 #define UVM_FLAG_COPYONW 0x080000 /* set copy_on_write flag */
147 #define UVM_FLAG_AMAPPAD 0x100000 /* for bss: pad amap to reduce malloc() */
148 #define UVM_FLAG_TRYLOCK 0x200000 /* fail if we can not lock map */
149 
150 /* macros to extract info */
151 #define UVM_PROTECTION(X)	((X) & UVM_PROT_MASK)
152 #define UVM_INHERIT(X)		(((X) & UVM_INH_MASK) >> 4)
153 #define UVM_MAXPROTECTION(X)	(((X) >> 8) & UVM_PROT_MASK)
154 #define UVM_ADVICE(X)		(((X) >> 12) & UVM_ADV_MASK)
155 
156 #define UVM_MAPFLAG(PROT,MAXPROT,INH,ADVICE,FLAGS) \
157 	((MAXPROT << 8)|(PROT)|(INH)|((ADVICE) << 12)|(FLAGS))
158 
159 /* magic offset value: offset not known(obj) or don't care(!obj) */
160 #define UVM_UNKNOWN_OFFSET ((voff_t) -1)
161 
162 /*
163  * the following defines are for uvm_km_kmemalloc's flags
164  */
165 #define UVM_KMF_NOWAIT	0x1			/* matches M_NOWAIT */
166 #define UVM_KMF_VALLOC	0x2			/* allocate VA only */
167 #define UVM_KMF_TRYLOCK	UVM_FLAG_TRYLOCK	/* try locking only */
168 
169 /*
170  * the following defines the strategies for uvm_pagealloc_strat()
171  */
172 #define	UVM_PGA_STRAT_NORMAL	0	/* high -> low free list walk */
173 #define	UVM_PGA_STRAT_ONLY	1	/* only specified free list */
174 #define	UVM_PGA_STRAT_FALLBACK	2	/* ONLY falls back on NORMAL */
175 
176 /*
177  * flags for uvm_pagealloc_strat()
178  */
179 #define UVM_PGA_USERESERVE	0x0001	/* ok to use reserve pages */
180 #define	UVM_PGA_ZERO		0x0002	/* returned page must be zero'd */
181 
182 /*
183  * the following defines are for ubc_alloc's flags
184  */
185 #define UBC_READ	0x01
186 #define UBC_WRITE	0x02
187 #define UBC_FAULTBUSY	0x04
188 
189 /*
190  * flags for uvn_findpages().
191  */
192 #define UFP_ALL		0x00
193 #define UFP_NOWAIT	0x01
194 #define UFP_NOALLOC	0x02
195 #define UFP_NOCACHE	0x04
196 #define UFP_NORDONLY	0x08
197 #define UFP_DIRTYONLY	0x10
198 #define UFP_BACKWARD	0x20
199 
200 /*
201  * lockflags that control the locking behavior of various functions.
202  */
203 #define	UVM_LK_ENTER	0x00000001	/* map locked on entry */
204 #define	UVM_LK_EXIT	0x00000002	/* leave map locked on exit */
205 
206 /*
207  * structures
208  */
209 
210 struct core;
211 struct mount;
212 struct pglist;
213 struct proc;
214 struct ucred;
215 struct uio;
216 struct uvm_object;
217 struct vm_anon;
218 struct vmspace;
219 struct pmap;
220 struct vnode;
221 struct pool;
222 struct simplelock;
223 struct vm_map_entry;
224 struct vm_map;
225 struct vm_page;
226 
227 extern struct pool *uvm_aiobuf_pool;
228 
229 /*
230  * uvmexp: global data structures that are exported to parts of the kernel
231  * other than the vm system.
232  */
233 
234 struct uvmexp {
235 	/* vm_page constants */
236 	int pagesize;   /* size of a page (PAGE_SIZE): must be power of 2 */
237 	int pagemask;   /* page mask */
238 	int pageshift;  /* page shift */
239 
240 	/* vm_page counters */
241 	int npages;     /* number of pages we manage */
242 	int free;       /* number of free pages */
243 	int active;     /* number of active pages */
244 	int inactive;   /* number of pages that we free'd but may want back */
245 	int paging;	/* number of pages in the process of being paged out */
246 	int wired;      /* number of wired pages */
247 
248 	/*
249 	 * Adding anything before this line will break binary compatibility
250 	 * with top(1) on NetBSD 1.5.
251 	 */
252 
253 	int ncolors;	/* number of page color buckets: must be p-o-2 */
254 	int colormask;	/* color bucket mask */
255 
256 	int zeropages;		/* number of zero'd pages */
257 	int reserve_pagedaemon; /* number of pages reserved for pagedaemon */
258 	int reserve_kernel;	/* number of pages reserved for kernel */
259 	int anonpages;		/* number of pages used by anon pagers */
260 	int vnodepages;		/* number of pages used by vnode page cache */
261 	int vtextpages;		/* number of pages used by vtext vnodes */
262 
263 	/* pageout params */
264 	int freemin;    /* min number of free pages */
265 	int freetarg;   /* target number of free pages */
266 	int inactarg;   /* target number of inactive pages */
267 	int wiredmax;   /* max number of wired pages */
268 	int anonmin;	/* min threshold for anon pages */
269 	int vtextmin;	/* min threshold for vtext pages */
270 	int vnodemin;	/* min threshold for vnode pages */
271 	int anonminpct;	/* min percent anon pages */
272 	int vtextminpct;/* min percent vtext pages */
273 	int vnodeminpct;/* min percent vnode pages */
274 
275 	/* swap */
276 	int nswapdev;	/* number of configured swap devices in system */
277 	int swpages;	/* number of PAGE_SIZE'ed swap pages */
278 	int swpginuse;	/* number of swap pages in use */
279 	int swpgonly;	/* number of swap pages in use, not also in RAM */
280 	int nswget;	/* number of times fault calls uvm_swap_get() */
281 	int nanon;	/* number total of anon's in system */
282 	int nanonneeded;/* number of anons currently needed */
283 	int nfreeanon;	/* number of free anon's */
284 
285 	/* stat counters */
286 	int faults;		/* page fault count */
287 	int traps;		/* trap count */
288 	int intrs;		/* interrupt count */
289 	int swtch;		/* context switch count */
290 	int softs;		/* software interrupt count */
291 	int syscalls;		/* system calls */
292 	int pageins;		/* pagein operation count */
293 				/* pageouts are in pdpageouts below */
294 	int swapins;		/* swapins */
295 	int swapouts;		/* swapouts */
296 	int pgswapin;		/* pages swapped in */
297 	int pgswapout;		/* pages swapped out */
298 	int forks;  		/* forks */
299 	int forks_ppwait;	/* forks where parent waits */
300 	int forks_sharevm;	/* forks where vmspace is shared */
301 	int pga_zerohit;	/* pagealloc where zero wanted and zero
302 				   was available */
303 	int pga_zeromiss;	/* pagealloc where zero wanted and zero
304 				   not available */
305 	int zeroaborts;		/* number of times page zeroing was
306 				   aborted */
307 	int colorhit;		/* pagealloc where we got optimal color */
308 	int colormiss;		/* pagealloc where we didn't */
309 
310 	/* fault subcounters */
311 	int fltnoram;	/* number of times fault was out of ram */
312 	int fltnoanon;	/* number of times fault was out of anons */
313 	int fltpgwait;	/* number of times fault had to wait on a page */
314 	int fltpgrele;	/* number of times fault found a released page */
315 	int fltrelck;	/* number of times fault relock called */
316 	int fltrelckok;	/* number of times fault relock is a success */
317 	int fltanget;	/* number of times fault gets anon page */
318 	int fltanretry;	/* number of times fault retrys an anon get */
319 	int fltamcopy;	/* number of times fault clears "needs copy" */
320 	int fltnamap;	/* number of times fault maps a neighbor anon page */
321 	int fltnomap;	/* number of times fault maps a neighbor obj page */
322 	int fltlget;	/* number of times fault does a locked pgo_get */
323 	int fltget;	/* number of times fault does an unlocked get */
324 	int flt_anon;	/* number of times fault anon (case 1a) */
325 	int flt_acow;	/* number of times fault anon cow (case 1b) */
326 	int flt_obj;	/* number of times fault is on object page (2a) */
327 	int flt_prcopy;	/* number of times fault promotes with copy (2b) */
328 	int flt_przero;	/* number of times fault promotes with zerofill (2b) */
329 
330 	/* daemon counters */
331 	int pdwoke;	/* number of times daemon woke up */
332 	int pdrevs;	/* number of times daemon rev'd clock hand */
333 	int pdswout;	/* number of times daemon called for swapout */
334 	int pdfreed;	/* number of pages daemon freed since boot */
335 	int pdscans;	/* number of pages daemon scaned since boot */
336 	int pdanscan;	/* number of anonymous pages scanned by daemon */
337 	int pdobscan;	/* number of object pages scanned by daemon */
338 	int pdreact;	/* number of pages daemon reactivated since boot */
339 	int pdbusy;	/* number of times daemon found a busy page */
340 	int pdpageouts;	/* number of times daemon started a pageout */
341 	int pdpending;	/* number of times daemon got a pending pagout */
342 	int pddeact;	/* number of pages daemon deactivates */
343 	int pdreanon;	/* anon pages reactivated due to min threshold */
344 	int pdrevnode;	/* vnode pages reactivated due to min threshold */
345 	int pdrevtext;	/* vtext pages reactivated due to min threshold */
346 };
347 
348 /*
349  * The following structure is 64-bit alignment safe.  New elements
350  * should only be added to the end of this structure so binary
351  * compatibility can be preserved.
352  */
353 struct uvmexp_sysctl {
354 	int64_t	pagesize;
355 	int64_t	pagemask;
356 	int64_t	pageshift;
357 	int64_t	npages;
358 	int64_t	free;
359 	int64_t	active;
360 	int64_t	inactive;
361 	int64_t	paging;
362 	int64_t	wired;
363 	int64_t	zeropages;
364 	int64_t	reserve_pagedaemon;
365 	int64_t	reserve_kernel;
366 	int64_t	freemin;
367 	int64_t	freetarg;
368 	int64_t	inactarg;
369 	int64_t	wiredmax;
370 	int64_t	nswapdev;
371 	int64_t	swpages;
372 	int64_t	swpginuse;
373 	int64_t	swpgonly;
374 	int64_t	nswget;
375 	int64_t	nanon;
376 	int64_t	nanonneeded;
377 	int64_t	nfreeanon;
378 	int64_t	faults;
379 	int64_t	traps;
380 	int64_t	intrs;
381 	int64_t	swtch;
382 	int64_t	softs;
383 	int64_t	syscalls;
384 	int64_t	pageins;
385 	int64_t	swapins;
386 	int64_t	swapouts;
387 	int64_t	pgswapin;
388 	int64_t	pgswapout;
389 	int64_t	forks;
390 	int64_t	forks_ppwait;
391 	int64_t	forks_sharevm;
392 	int64_t	pga_zerohit;
393 	int64_t	pga_zeromiss;
394 	int64_t	zeroaborts;
395 	int64_t	fltnoram;
396 	int64_t	fltnoanon;
397 	int64_t	fltpgwait;
398 	int64_t	fltpgrele;
399 	int64_t	fltrelck;
400 	int64_t	fltrelckok;
401 	int64_t	fltanget;
402 	int64_t	fltanretry;
403 	int64_t	fltamcopy;
404 	int64_t	fltnamap;
405 	int64_t	fltnomap;
406 	int64_t	fltlget;
407 	int64_t	fltget;
408 	int64_t	flt_anon;
409 	int64_t	flt_acow;
410 	int64_t	flt_obj;
411 	int64_t	flt_prcopy;
412 	int64_t	flt_przero;
413 	int64_t	pdwoke;
414 	int64_t	pdrevs;
415 	int64_t	pdswout;
416 	int64_t	pdfreed;
417 	int64_t	pdscans;
418 	int64_t	pdanscan;
419 	int64_t	pdobscan;
420 	int64_t	pdreact;
421 	int64_t	pdbusy;
422 	int64_t	pdpageouts;
423 	int64_t	pdpending;
424 	int64_t	pddeact;
425 	int64_t	anonpages;
426 	int64_t	vnodepages;
427 	int64_t	vtextpages;
428 	int64_t colorhit;
429 	int64_t colormiss;
430 	int64_t ncolors;
431 };
432 
433 #ifdef _KERNEL
434 extern struct uvmexp uvmexp;
435 #endif
436 
437 /*
438  * Finally, bring in standard UVM headers.
439  */
440 #include <sys/vmmeter.h>
441 #include <sys/queue.h>
442 #include <uvm/uvm_param.h>
443 #include <sys/lock.h>
444 #include <uvm/uvm_prot.h>
445 #include <uvm/uvm_page.h>
446 #include <uvm/uvm_pmap.h>
447 #include <uvm/uvm_map.h>
448 #include <uvm/uvm_fault.h>
449 #include <uvm/uvm_pager.h>
450 
451 /*
452  * Shareable process virtual address space.
453  * May eventually be merged with vm_map.
454  * Several fields are temporary (text, data stuff).
455  */
456 struct vmspace {
457 	struct	vm_map vm_map;	/* VM address map */
458 	int	vm_refcnt;	/* number of references */
459 	caddr_t	vm_shm;		/* SYS5 shared memory private data XXX */
460 /* we copy from vm_startcopy to the end of the structure on fork */
461 #define vm_startcopy vm_rssize
462 	segsz_t vm_rssize;	/* current resident set size in pages */
463 	segsz_t vm_swrss;	/* resident set size before last swap */
464 	segsz_t vm_tsize;	/* text size (pages) XXX */
465 	segsz_t vm_dsize;	/* data size (pages) XXX */
466 	segsz_t vm_ssize;	/* stack size (pages) */
467 	caddr_t	vm_taddr;	/* user virtual address of text XXX */
468 	caddr_t	vm_daddr;	/* user virtual address of data XXX */
469 	caddr_t vm_maxsaddr;	/* user VA at max stack growth */
470 	caddr_t vm_minsaddr;	/* user VA at top of stack */
471 };
472 
473 #ifdef _KERNEL
474 
475 /*
476  * the various kernel maps, owned by MD code
477  */
478 extern struct vm_map *exec_map;
479 extern struct vm_map *kernel_map;
480 extern struct vm_map *kmem_map;
481 extern struct vm_map *mb_map;
482 extern struct vm_map *phys_map;
483 
484 /*
485  * macros
486  */
487 
488 /* zalloc zeros memory, alloc does not */
489 #define uvm_km_zalloc(MAP,SIZE) uvm_km_alloc1(MAP,SIZE,TRUE)
490 #define uvm_km_alloc(MAP,SIZE)  uvm_km_alloc1(MAP,SIZE,FALSE)
491 
492 #endif /* _KERNEL */
493 
494 #define vm_resident_count(vm) (pmap_resident_count((vm)->vm_map.pmap))
495 
496 struct buf;
497 struct loadavg;
498 struct proc;
499 struct pmap;
500 struct vmspace;
501 struct vmtotal;
502 struct mount;
503 struct vnode;
504 struct core;
505 
506 #ifdef _KERNEL
507 
508 /* vm_machdep.c */
509 void		vmapbuf __P((struct buf *, vsize_t));
510 void		vunmapbuf __P((struct buf *, vsize_t));
511 void		pagemove __P((caddr_t, caddr_t, size_t));
512 #ifndef	cpu_swapin
513 void		cpu_swapin __P((struct proc *));
514 #endif
515 #ifndef	cpu_swapout
516 void		cpu_swapout __P((struct proc *));
517 #endif
518 
519 /* uvm_aobj.c */
520 struct uvm_object	*uao_create __P((vsize_t, int));
521 void			uao_detach __P((struct uvm_object *));
522 void			uao_detach_locked __P((struct uvm_object *));
523 void			uao_reference __P((struct uvm_object *));
524 void			uao_reference_locked __P((struct uvm_object *));
525 
526 /* uvm_bio.c */
527 void			ubc_init __P((void));
528 void *			ubc_alloc __P((struct uvm_object *, voff_t, vsize_t *,
529 				       int));
530 void			ubc_release __P((void *, int));
531 void			ubc_flush __P((struct uvm_object *, voff_t, voff_t));
532 
533 /* uvm_fault.c */
534 int			uvm_fault __P((struct vm_map *, vaddr_t, vm_fault_t,
535 				       vm_prot_t));
536 				/* handle a page fault */
537 
538 /* uvm_glue.c */
539 #if defined(KGDB)
540 void			uvm_chgkprot __P((caddr_t, size_t, int));
541 #endif
542 void			uvm_fork __P((struct proc *, struct proc *, boolean_t,
543 			    void *, size_t, void (*)(void *), void *));
544 void			uvm_exit __P((struct proc *));
545 void			uvm_init_limits __P((struct proc *));
546 boolean_t		uvm_kernacc __P((caddr_t, size_t, int));
547 __dead void		uvm_scheduler __P((void)) __attribute__((noreturn));
548 void			uvm_swapin __P((struct proc *));
549 boolean_t		uvm_useracc __P((caddr_t, size_t, int));
550 int			uvm_vslock __P((struct proc *, caddr_t, size_t,
551 			    vm_prot_t));
552 void			uvm_vsunlock __P((struct proc *, caddr_t, size_t));
553 
554 
555 /* uvm_init.c */
556 void			uvm_init __P((void));
557 
558 /* uvm_io.c */
559 int			uvm_io __P((struct vm_map *, struct uio *));
560 
561 /* uvm_km.c */
562 vaddr_t			uvm_km_alloc1 __P((struct vm_map *, vsize_t,
563 			    boolean_t));
564 void			uvm_km_free __P((struct vm_map *, vaddr_t, vsize_t));
565 void			uvm_km_free_wakeup __P((struct vm_map *, vaddr_t,
566 			    vsize_t));
567 vaddr_t			uvm_km_kmemalloc __P((struct vm_map *, struct
568 			    uvm_object *, vsize_t, int));
569 struct vm_map		*uvm_km_suballoc __P((struct vm_map *, vaddr_t *,
570 			    vaddr_t *, vsize_t, int, boolean_t,
571 			    struct vm_map *));
572 vaddr_t			uvm_km_valloc __P((struct vm_map *, vsize_t));
573 vaddr_t			uvm_km_valloc_align __P((struct vm_map *, vsize_t,
574 			    vsize_t));
575 vaddr_t			uvm_km_valloc_wait __P((struct vm_map *, vsize_t));
576 vaddr_t			uvm_km_valloc_prefer_wait __P((struct vm_map *, vsize_t,
577 			    voff_t));
578 vaddr_t			uvm_km_alloc_poolpage1 __P((struct vm_map *,
579 			    struct uvm_object *, boolean_t));
580 void			uvm_km_free_poolpage1 __P((struct vm_map *, vaddr_t));
581 
582 #define	uvm_km_alloc_poolpage(waitok)					\
583 	uvm_km_alloc_poolpage1(kmem_map, NULL, (waitok))
584 #define	uvm_km_free_poolpage(addr)					\
585 	uvm_km_free_poolpage1(kmem_map, (addr))
586 
587 /* uvm_map.c */
588 int			uvm_map __P((struct vm_map *, vaddr_t *, vsize_t,
589 				struct uvm_object *, voff_t, vsize_t,
590 				uvm_flag_t));
591 int			uvm_map_pageable __P((struct vm_map *, vaddr_t,
592 				vaddr_t, boolean_t, int));
593 int			uvm_map_pageable_all __P((struct vm_map *, int,
594 				vsize_t));
595 boolean_t		uvm_map_checkprot __P((struct vm_map *, vaddr_t,
596 				vaddr_t, vm_prot_t));
597 int			uvm_map_protect __P((struct vm_map *, vaddr_t,
598 				vaddr_t, vm_prot_t, boolean_t));
599 struct vmspace		*uvmspace_alloc __P((vaddr_t, vaddr_t));
600 void			uvmspace_init __P((struct vmspace *, struct pmap *,
601 				vaddr_t, vaddr_t));
602 void			uvmspace_exec __P((struct proc *, vaddr_t, vaddr_t));
603 struct vmspace		*uvmspace_fork __P((struct vmspace *));
604 void			uvmspace_free __P((struct vmspace *));
605 void			uvmspace_share __P((struct proc *, struct proc *));
606 void			uvmspace_unshare __P((struct proc *));
607 
608 
609 /* uvm_meter.c */
610 void			uvm_meter __P((void));
611 int			uvm_sysctl __P((int *, u_int, void *, size_t *,
612 				void *, size_t, struct proc *));
613 
614 /* uvm_mmap.c */
615 int			uvm_mmap __P((struct vm_map *, vaddr_t *, vsize_t,
616 				vm_prot_t, vm_prot_t, int,
617 				void *, voff_t, vsize_t));
618 
619 /* uvm_page.c */
620 struct vm_page		*uvm_pagealloc_strat __P((struct uvm_object *,
621 				voff_t, struct vm_anon *, int, int, int));
622 #define	uvm_pagealloc(obj, off, anon, flags) \
623 	    uvm_pagealloc_strat((obj), (off), (anon), (flags), \
624 				UVM_PGA_STRAT_NORMAL, 0)
625 void			uvm_pagerealloc __P((struct vm_page *,
626 					     struct uvm_object *, voff_t));
627 /* Actually, uvm_page_physload takes PF#s which need their own type */
628 void			uvm_page_physload __P((paddr_t, paddr_t, paddr_t,
629 			    paddr_t, int));
630 void			uvm_setpagesize __P((void));
631 
632 /* uvm_pager.c */
633 void			uvm_aio_biodone1 __P((struct buf *));
634 void			uvm_aio_biodone __P((struct buf *));
635 void			uvm_aio_aiodone __P((struct buf *));
636 
637 /* uvm_pdaemon.c */
638 void			uvm_pageout __P((void *));
639 void			uvm_aiodone_daemon __P((void *));
640 
641 /* uvm_pglist.c */
642 int			uvm_pglistalloc __P((psize_t, paddr_t, paddr_t,
643 			    paddr_t, paddr_t, struct pglist *, int, int));
644 void			uvm_pglistfree __P((struct pglist *));
645 
646 /* uvm_swap.c */
647 void			uvm_swap_init __P((void));
648 
649 /* uvm_unix.c */
650 int			uvm_coredump __P((struct proc *, struct vnode *,
651 				struct ucred *, struct core *));
652 int			uvm_grow __P((struct proc *, vaddr_t));
653 /* should only be needed if COMPAT_NETBSD32 is defined */
654 struct core32;
655 int			uvm_coredump32 __P((struct proc *, struct vnode *,
656 				struct ucred *, struct core32 *));
657 
658 /* uvm_user.c */
659 void			uvm_deallocate __P((struct vm_map *, vaddr_t, vsize_t));
660 
661 /* uvm_vnode.c */
662 void			uvm_vnp_setsize __P((struct vnode *, voff_t));
663 void			uvm_vnp_sync __P((struct mount *));
664 struct uvm_object	*uvn_attach __P((void *, vm_prot_t));
665 void			uvn_findpages __P((struct uvm_object *, voff_t,
666 					   int *, struct vm_page **, int));
667 void			uvm_vnp_zerorange __P((struct vnode *, off_t, size_t));
668 
669 /* kern_malloc.c */
670 void			kmeminit_nkmempages __P((void));
671 void			kmeminit __P((void));
672 extern int		nkmempages;
673 
674 #endif /* _KERNEL */
675 
676 #endif /* _UVM_UVM_EXTERN_H_ */
677