1/* $NetBSD: uvm_extern.h,v 1.198 2016/07/20 12:38:43 maxv Exp $ */
2
3/*
4 * Copyright (c) 1997 Charles D. Cranor and Washington University.
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 ``AS IS'' AND ANY EXPRESS OR
17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
21 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
22 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
23 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
25 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26 *
27 * from: Id: uvm_extern.h,v 1.1.2.21 1998/02/07 01:16:53 chs Exp
28 */
29
30/*-
31 * Copyright (c) 1991, 1992, 1993
32 * The Regents of the University of California. All rights reserved.
33 *
34 * Redistribution and use in source and binary forms, with or without
35 * modification, are permitted provided that the following conditions
36 * are met:
37 * 1. Redistributions of source code must retain the above copyright
38 * notice, this list of conditions and the following disclaimer.
39 * 2. Redistributions in binary form must reproduce the above copyright
40 * notice, this list of conditions and the following disclaimer in the
41 * documentation and/or other materials provided with the distribution.
42 * 3. Neither the name of the University nor the names of its contributors
43 * may be used to endorse or promote products derived from this software
44 * without specific prior written permission.
45 *
46 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
47 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
48 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
49 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
50 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
51 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
52 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
53 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
54 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
55 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
56 * SUCH DAMAGE.
57 *
58 * @(#)vm_extern.h 8.5 (Berkeley) 5/3/95
59 */
60
61#ifndef _UVM_UVM_EXTERN_H_
62#define _UVM_UVM_EXTERN_H_
63
64/*
65 * uvm_extern.h: this file defines the external interface to the VM system.
66 *
67 * this should be the only file included by non-VM parts of the kernel
68 * which need access to VM services. if you want to know the interface
69 * to the MI VM layer without knowing the details, this is the file to
70 * learn.
71 *
72 * NOTE: vm system calls are prototyped in syscallargs.h
73 */
74
75/*
76 * defines
77 */
78
79/*
80 * the following defines are for uvm_map and functions which call it.
81 */
82
83/* protections bits */
84#define UVM_PROT_MASK 0x07 /* protection mask */
85#define UVM_PROT_NONE 0x00 /* protection none */
86#define UVM_PROT_ALL 0x07 /* everything */
87#define UVM_PROT_READ 0x01 /* read */
88#define UVM_PROT_WRITE 0x02 /* write */
89#define UVM_PROT_EXEC 0x04 /* exec */
90
91/* protection short codes */
92#define UVM_PROT_R 0x01 /* read */
93#define UVM_PROT_W 0x02 /* write */
94#define UVM_PROT_RW 0x03 /* read-write */
95#define UVM_PROT_X 0x04 /* exec */
96#define UVM_PROT_RX 0x05 /* read-exec */
97#define UVM_PROT_WX 0x06 /* write-exec */
98#define UVM_PROT_RWX 0x07 /* read-write-exec */
99
100/* 0x08: not used */
101
102/* inherit codes */
103#define UVM_INH_MASK 0x30 /* inherit mask */
104#define UVM_INH_SHARE 0x00 /* "share" */
105#define UVM_INH_COPY 0x10 /* "copy" */
106#define UVM_INH_NONE 0x20 /* "none" */
107#define UVM_INH_DONATE 0x30 /* "donate" << not used */
108
109/* 0x40, 0x80: not used */
110
111/* bits 0x700: max protection, 0x800: not used */
112
113/* bits 0x7000: advice, 0x8000: not used */
114/* advice: matches MADV_* from sys/mman.h and POSIX_FADV_* from sys/fcntl.h */
115#define UVM_ADV_NORMAL 0x0 /* 'normal' */
116#define UVM_ADV_RANDOM 0x1 /* 'random' */
117#define UVM_ADV_SEQUENTIAL 0x2 /* 'sequential' */
118#define UVM_ADV_WILLNEED 0x3 /* pages will be needed */
119#define UVM_ADV_DONTNEED 0x4 /* pages won't be needed */
120#define UVM_ADV_NOREUSE 0x5 /* pages will be used only once */
121#define UVM_ADV_MASK 0x7 /* mask */
122
123/* bits 0xffff0000: mapping flags */
124#define UVM_FLAG_FIXED 0x010000 /* find space */
125#define UVM_FLAG_OVERLAY 0x020000 /* establish overlay */
126#define UVM_FLAG_NOMERGE 0x040000 /* don't merge map entries */
127#define UVM_FLAG_COPYONW 0x080000 /* set copy_on_write flag */
128#define UVM_FLAG_AMAPPAD 0x100000 /* for bss: pad amap to reduce allocations */
129#define UVM_FLAG_TRYLOCK 0x200000 /* fail if we can not lock map */
130#define UVM_FLAG_NOWAIT 0x400000 /* not allowed to sleep */
131#define UVM_FLAG_WAITVA 0x800000 /* wait for va */
132#define UVM_FLAG_VAONLY 0x2000000 /* unmap: no pages are mapped */
133#define UVM_FLAG_COLORMATCH 0x4000000 /* match color given in off */
134
135/* macros to extract info */
136#define UVM_PROTECTION(X) ((X) & UVM_PROT_MASK)
137#define UVM_INHERIT(X) (((X) & UVM_INH_MASK) >> 4)
138#define UVM_MAXPROTECTION(X) (((X) >> 8) & UVM_PROT_MASK)
139#define UVM_ADVICE(X) (((X) >> 12) & UVM_ADV_MASK)
140
141#define UVM_MAPFLAG(PROT,MAXPROT,INH,ADVICE,FLAGS) \
142 (((MAXPROT) << 8)|(PROT)|(INH)|((ADVICE) << 12)|(FLAGS))
143
144/* magic offset value: offset not known(obj) or don't care(!obj) */
145#define UVM_UNKNOWN_OFFSET ((voff_t) -1)
146
147/*
148 * the following defines are for uvm_km_alloc/free's flags
149 */
150#define UVM_KMF_WIRED 0x1 /* allocation type: wired */
151#define UVM_KMF_PAGEABLE 0x2 /* allocation type: pageable */
152#define UVM_KMF_VAONLY 0x4 /* allocation type: VA only */
153#define UVM_KMF_TYPEMASK (UVM_KMF_VAONLY | UVM_KMF_PAGEABLE | UVM_KMF_WIRED)
154#define UVM_KMF_CANFAIL 0x8 /* caller handles failure */
155#define UVM_KMF_ZERO 0x10 /* want zero filled memory */
156#define UVM_KMF_EXEC 0x20 /* need executable mapping */
157#define UVM_KMF_TRYLOCK UVM_FLAG_TRYLOCK /* try locking only */
158#define UVM_KMF_NOWAIT UVM_FLAG_NOWAIT /* not allowed to sleep */
159#define UVM_KMF_WAITVA UVM_FLAG_WAITVA /* sleep for va */
160#define UVM_KMF_COLORMATCH UVM_FLAG_COLORMATCH /* start at color in align */
161
162/*
163 * the following defines the strategies for uvm_pagealloc_strat()
164 */
165#define UVM_PGA_STRAT_NORMAL 0 /* priority (low id to high) walk */
166#define UVM_PGA_STRAT_ONLY 1 /* only specified free list */
167#define UVM_PGA_STRAT_FALLBACK 2 /* ONLY falls back on NORMAL */
168
169/*
170 * flags for uvm_pagealloc_strat()
171 */
172#define UVM_PGA_USERESERVE 0x0001 /* ok to use reserve pages */
173#define UVM_PGA_ZERO 0x0002 /* returned page must be zero'd */
174
175/*
176 * flags for ubc_alloc()
177 */
178#define UBC_READ 0x001 /* reading from object */
179#define UBC_WRITE 0x002 /* writing to object */
180#define UBC_FAULTBUSY 0x004 /* nobody else is using these pages, so busy
181 * them at alloc and unbusy at release (e.g.,
182 * for writes extending a file) */
183
184/*
185 * flags for ubc_release()
186 */
187#define UBC_UNMAP 0x010 /* unmap pages now -- don't leave the
188 * mappings cached indefinitely */
189
190/*
191 * flags for ubc_uiomove()
192 */
193#define UBC_PARTIALOK 0x100 /* return early on error; otherwise, zero all
194 * remaining bytes after error */
195
196/*
197 * flags for uvn_findpages().
198 */
199#define UFP_ALL 0x00
200#define UFP_NOWAIT 0x01
201#define UFP_NOALLOC 0x02
202#define UFP_NOCACHE 0x04
203#define UFP_NORDONLY 0x08
204#define UFP_DIRTYONLY 0x10
205#define UFP_BACKWARD 0x20
206
207/*
208 * lockflags that control the locking behavior of various functions.
209 */
210#define UVM_LK_ENTER 0x00000001 /* map locked on entry */
211#define UVM_LK_EXIT 0x00000002 /* leave map locked on exit */
212
213/*
214 * Default number of pages to allocate on the stack
215 */
216#define UBC_MAX_PAGES 8
217
218/*
219 * Value representing inactive emap.
220 */
221#define UVM_EMAP_INACTIVE (0)
222
223/*
224 * structures
225 */
226
227struct buf;
228struct core;
229struct loadavg;
230struct mount;
231struct pglist;
232struct proc;
233struct uio;
234struct uvm_object;
235struct vm_anon;
236struct vmspace;
237struct pmap;
238struct vnode;
239struct vm_map_entry;
240struct vm_map;
241struct vm_page;
242struct vmtotal;
243
244/*
245 * uvm_pctparam: parameter to be shown as percentage to user.
246 */
247
248#define UVM_PCTPARAM_SHIFT 8
249#define UVM_PCTPARAM_SCALE (1 << UVM_PCTPARAM_SHIFT)
250#define UVM_PCTPARAM_APPLY(pct, x) \
251 (((x) * (pct)->pct_scaled) >> UVM_PCTPARAM_SHIFT)
252struct uvm_pctparam {
253 int pct_pct; /* percent [0, 100] */ /* should be the first member */
254 int pct_scaled;
255 int (*pct_check)(struct uvm_pctparam *, int);
256};
257
258/*
259 * uvmexp: global data structures that are exported to parts of the kernel
260 * other than the vm system.
261 */
262
263struct uvmexp {
264 /* vm_page constants */
265 int pagesize; /* size of a page (PAGE_SIZE): must be power of 2 */
266 int pagemask; /* page mask */
267 int pageshift; /* page shift */
268
269 /* vm_page counters */
270 int npages; /* number of pages we manage */
271 int free; /* number of free pages */
272 int paging; /* number of pages in the process of being paged out */
273 int wired; /* number of wired pages */
274
275 /*
276 * Adding anything before this line will break binary compatibility
277 * with top(1) on NetBSD 1.5.
278 */
279
280 int ncolors; /* number of page color buckets: must be p-o-2 */
281 int colormask; /* color bucket mask */
282
283 int zeropages; /* number of zero'd pages */
284 int reserve_pagedaemon; /* number of pages reserved for pagedaemon */
285 int reserve_kernel; /* number of pages reserved for kernel */
286 unsigned anonpages; /* number of pages used by anon mappings */
287 unsigned filepages; /* number of pages used by cached file data */
288 unsigned execpages; /* number of pages used by cached exec data */
289
290 /* pageout params */
291 int freemin; /* min number of free pages */
292 int freetarg; /* target number of free pages */
293 int wiredmax; /* max number of wired pages */
294
295 /* swap */
296 int nswapdev; /* number of configured swap devices in system */
297 int swpages; /* number of PAGE_SIZE'ed swap pages */
298 int swpgavail; /* number of swap pages currently available */
299 int swpginuse; /* number of swap pages in use */
300 int swpgonly; /* number of swap pages in use, not also in RAM */
301 int nswget; /* number of times fault calls uvm_swap_get() */
302
303 /* stat counters. XXX: should be 64-bit counters */
304 int _unused_faults; /* page fault count */
305 int _unused_traps; /* trap count */
306 int _unused_intrs; /* interrupt count */
307 int _unused_swtch; /* context switch count */
308 int _unused_softs; /* software interrupt count */
309 int _unused_syscalls; /* system calls */
310 int pageins; /* pagein operation count */
311 /* pageouts are in pdpageouts below */
312 int _unused1;
313 int _unused2;
314 int pgswapin; /* pages swapped in */
315 int pgswapout; /* pages swapped out */
316 int forks; /* forks */
317 int forks_ppwait; /* forks where parent waits */
318 int forks_sharevm; /* forks where vmspace is shared */
319 int pga_zerohit; /* pagealloc where zero wanted and zero
320 was available */
321 int pga_zeromiss; /* pagealloc where zero wanted and zero
322 not available */
323 int zeroaborts; /* number of times page zeroing was
324 aborted */
325 int colorhit; /* pagealloc where we got optimal color */
326 int colormiss; /* pagealloc where we didn't */
327 int cpuhit; /* pagealloc where we allocated locally */
328 int cpumiss; /* pagealloc where we didn't */
329
330 /* fault subcounters. XXX: should be 64-bit counters */
331 int fltnoram; /* number of times fault was out of ram */
332 int fltnoanon; /* number of times fault was out of anons */
333 int fltpgwait; /* number of times fault had to wait on a page */
334 int fltpgrele; /* number of times fault found a released page */
335 int fltrelck; /* number of times fault relock called */
336 int fltrelckok; /* number of times fault relock is a success */
337 int fltanget; /* number of times fault gets anon page */
338 int fltanretry; /* number of times fault retrys an anon get */
339 int fltamcopy; /* number of times fault clears "needs copy" */
340 int fltnamap; /* number of times fault maps a neighbor anon page */
341 int fltnomap; /* number of times fault maps a neighbor obj page */
342 int fltlget; /* number of times fault does a locked pgo_get */
343 int fltget; /* number of times fault does an unlocked get */
344 int flt_anon; /* number of times fault anon (case 1a) */
345 int flt_acow; /* number of times fault anon cow (case 1b) */
346 int flt_obj; /* number of times fault is on object page (2a) */
347 int flt_prcopy; /* number of times fault promotes with copy (2b) */
348 int flt_przero; /* number of times fault promotes with zerofill (2b) */
349
350 /* daemon counters. XXX: should be 64-bit counters */
351 int pdwoke; /* number of times daemon woke up */
352 int pdrevs; /* number of times daemon rev'd clock hand */
353 int _unused3;
354 int pdfreed; /* number of pages daemon freed since boot */
355 int pdscans; /* number of pages daemon scanned since boot */
356 int pdanscan; /* number of anonymous pages scanned by daemon */
357 int pdobscan; /* number of object pages scanned by daemon */
358 int pdreact; /* number of pages daemon reactivated since boot */
359 int pdbusy; /* number of times daemon found a busy page */
360 int pdpageouts; /* number of times daemon started a pageout */
361 int pdpending; /* number of times daemon got a pending pagout */
362 int pddeact; /* number of pages daemon deactivates */
363 int pdreanon; /* anon pages reactivated due to thresholds */
364 int pdrefile; /* file pages reactivated due to thresholds */
365 int pdreexec; /* executable pages reactivated due to thresholds */
366};
367
368/*
369 * The following structure is 64-bit alignment safe. New elements
370 * should only be added to the end of this structure so binary
371 * compatibility can be preserved.
372 */
373struct uvmexp_sysctl {
374 int64_t pagesize;
375 int64_t pagemask;
376 int64_t pageshift;
377 int64_t npages;
378 int64_t free;
379 int64_t active;
380 int64_t inactive;
381 int64_t paging;
382 int64_t wired;
383 int64_t zeropages;
384 int64_t reserve_pagedaemon;
385 int64_t reserve_kernel;
386 int64_t freemin;
387 int64_t freetarg;
388 int64_t inactarg; /* unused */
389 int64_t wiredmax;
390 int64_t nswapdev;
391 int64_t swpages;
392 int64_t swpginuse;
393 int64_t swpgonly;
394 int64_t nswget;
395 int64_t unused1; /* unused; was nanon */
396 int64_t cpuhit;
397 int64_t cpumiss;
398 int64_t faults;
399 int64_t traps;
400 int64_t intrs;
401 int64_t swtch;
402 int64_t softs;
403 int64_t syscalls;
404 int64_t pageins;
405 int64_t swapins; /* unused */
406 int64_t swapouts; /* unused */
407 int64_t pgswapin;
408 int64_t pgswapout;
409 int64_t forks;
410 int64_t forks_ppwait;
411 int64_t forks_sharevm;
412 int64_t pga_zerohit;
413 int64_t pga_zeromiss;
414 int64_t zeroaborts;
415 int64_t fltnoram;
416 int64_t fltnoanon;
417 int64_t fltpgwait;
418 int64_t fltpgrele;
419 int64_t fltrelck;
420 int64_t fltrelckok;
421 int64_t fltanget;
422 int64_t fltanretry;
423 int64_t fltamcopy;
424 int64_t fltnamap;
425 int64_t fltnomap;
426 int64_t fltlget;
427 int64_t fltget;
428 int64_t flt_anon;
429 int64_t flt_acow;
430 int64_t flt_obj;
431 int64_t flt_prcopy;
432 int64_t flt_przero;
433 int64_t pdwoke;
434 int64_t pdrevs;
435 int64_t unused4;
436 int64_t pdfreed;
437 int64_t pdscans;
438 int64_t pdanscan;
439 int64_t pdobscan;
440 int64_t pdreact;
441 int64_t pdbusy;
442 int64_t pdpageouts;
443 int64_t pdpending;
444 int64_t pddeact;
445 int64_t anonpages;
446 int64_t filepages;
447 int64_t execpages;
448 int64_t colorhit;
449 int64_t colormiss;
450 int64_t ncolors;
451};
452
453#ifdef _KERNEL
454/* we need this before including uvm_page.h on some platforms */
455extern struct uvmexp uvmexp;
456/* MD code needs this without including <uvm/uvm.h> */
457extern bool vm_page_zero_enable;
458#endif
459
460/*
461 * Finally, bring in standard UVM headers.
462 */
463#include <sys/vmmeter.h>
464#include <sys/queue.h>
465#include <sys/lock.h>
466#ifdef _KERNEL
467#include <sys/vmem.h>
468#endif
469#include <uvm/uvm_param.h>
470#include <uvm/uvm_prot.h>
471#include <uvm/uvm_pmap.h>
472#if defined(_KERNEL) || defined(_KMEMUSER)
473#include <uvm/uvm_map.h>
474#include <uvm/uvm_pager.h>
475#endif
476
477/*
478 * helpers for calling ubc_release()
479 */
480#ifdef PMAP_CACHE_VIVT
481#define UBC_WANT_UNMAP(vp) (((vp)->v_iflag & VI_TEXT) != 0)
482#else
483#define UBC_WANT_UNMAP(vp) false
484#endif
485#define UBC_UNMAP_FLAG(vp) (UBC_WANT_UNMAP(vp) ? UBC_UNMAP : 0)
486
487#if defined(_KERNEL) || defined(_KMEMUSER)
488/*
489 * Shareable process virtual address space.
490 * May eventually be merged with vm_map.
491 * Several fields are temporary (text, data stuff).
492 */
493struct vmspace {
494 struct vm_map vm_map; /* VM address map */
495 int vm_refcnt; /* number of references *
496 * note: protected by vm_map.ref_lock */
497 void * vm_shm; /* SYS5 shared memory private data XXX */
498/* we copy from vm_startcopy to the end of the structure on fork */
499#define vm_startcopy vm_rssize
500 segsz_t vm_rssize; /* current resident set size in pages */
501 segsz_t vm_swrss; /* resident set size before last swap */
502 segsz_t vm_tsize; /* text size (pages) XXX */
503 segsz_t vm_dsize; /* data size (pages) XXX */
504 segsz_t vm_ssize; /* stack size (pages) */
505 segsz_t vm_issize; /* initial unmapped stack size (pages) */
506 void * vm_taddr; /* user virtual address of text XXX */
507 void * vm_daddr; /* user virtual address of data XXX */
508 void *vm_maxsaddr; /* user VA at max stack growth */
509 void *vm_minsaddr; /* user VA at top of stack */
510 size_t vm_aslr_delta_mmap; /* mmap() random delta for ASLR */
511};
512#define VMSPACE_IS_KERNEL_P(vm) VM_MAP_IS_KERNEL(&(vm)->vm_map)
513#endif
514
515#ifdef _KERNEL
516
517/*
518 * used to keep state while iterating over the map for a core dump.
519 */
520struct uvm_coredump_state {
521 void *cookie; /* opaque for the caller */
522 vaddr_t start; /* start of region */
523 vaddr_t realend; /* real end of region */
524 vaddr_t end; /* virtual end of region */
525 vm_prot_t prot; /* protection of region */
526 int flags; /* flags; see below */
527};
528
529#define UVM_COREDUMP_STACK 0x01 /* region is user stack */
530
531/*
532 * the various kernel maps, owned by MD code
533 */
534extern struct vm_map *kernel_map;
535extern struct vm_map *phys_map;
536
537/*
538 * macros
539 */
540
541#define vm_resident_count(vm) (pmap_resident_count((vm)->vm_map.pmap))
542
543
544/* vm_machdep.c */
545int vmapbuf(struct buf *, vsize_t);
546void vunmapbuf(struct buf *, vsize_t);
547
548/* uvm_aobj.c */
549struct uvm_object *uao_create(vsize_t, int);
550void uao_set_pgfl(struct uvm_object *, int);
551void uao_detach(struct uvm_object *);
552void uao_reference(struct uvm_object *);
553
554/* uvm_bio.c */
555void ubc_init(void);
556void ubchist_init(void);
557void * ubc_alloc(struct uvm_object *, voff_t, vsize_t *, int,
558 int);
559void ubc_release(void *, int);
560int ubc_uiomove(struct uvm_object *, struct uio *, vsize_t,
561 int, int);
562void ubc_zerorange(struct uvm_object *, off_t, size_t, int);
563void ubc_purge(struct uvm_object *);
564
565/* uvm_emap.c */
566void uvm_emap_sysinit(void);
567#ifdef __HAVE_PMAP_EMAP
568void uvm_emap_switch(lwp_t *);
569#else
570#define uvm_emap_switch(l)
571#endif
572
573u_int uvm_emap_gen_return(void);
574void uvm_emap_update(u_int);
575
576vaddr_t uvm_emap_alloc(vsize_t, bool);
577void uvm_emap_free(vaddr_t, size_t);
578
579void uvm_emap_enter(vaddr_t, struct vm_page **, u_int);
580void uvm_emap_remove(vaddr_t, vsize_t);
581
582#ifdef __HAVE_PMAP_EMAP
583void uvm_emap_consume(u_int);
584u_int uvm_emap_produce(void);
585#else
586#define uvm_emap_consume(x)
587#define uvm_emap_produce() UVM_EMAP_INACTIVE
588#endif
589
590/* uvm_fault.c */
591#define uvm_fault(m, a, p) uvm_fault_internal(m, a, p, 0)
592int uvm_fault_internal(struct vm_map *, vaddr_t, vm_prot_t, int);
593 /* handle a page fault */
594
595/* uvm_glue.c */
596#if defined(KGDB)
597void uvm_chgkprot(void *, size_t, int);
598#endif
599void uvm_proc_fork(struct proc *, struct proc *, bool);
600void uvm_lwp_fork(struct lwp *, struct lwp *,
601 void *, size_t, void (*)(void *), void *);
602int uvm_coredump_walkmap(struct proc *,
603 int (*)(struct uvm_coredump_state *), void *);
604int uvm_coredump_count_segs(struct proc *);
605void uvm_proc_exit(struct proc *);
606void uvm_lwp_exit(struct lwp *);
607void uvm_init_limits(struct proc *);
608bool uvm_kernacc(void *, size_t, vm_prot_t);
609__dead void uvm_scheduler(void);
610vaddr_t uvm_uarea_alloc(void);
611void uvm_uarea_free(vaddr_t);
612vaddr_t uvm_uarea_system_alloc(struct cpu_info *);
613void uvm_uarea_system_free(vaddr_t);
614vaddr_t uvm_lwp_getuarea(lwp_t *);
615void uvm_lwp_setuarea(lwp_t *, vaddr_t);
616int uvm_vslock(struct vmspace *, void *, size_t, vm_prot_t);
617void uvm_vsunlock(struct vmspace *, void *, size_t);
618void uvm_cpu_attach(struct cpu_info *);
619
620
621/* uvm_init.c */
622void uvm_init(void);
623
624/* uvm_io.c */
625int uvm_io(struct vm_map *, struct uio *, int);
626
627/* uvm_km.c */
628vaddr_t uvm_km_alloc(struct vm_map *, vsize_t, vsize_t,
629 uvm_flag_t);
630int uvm_km_protect(struct vm_map *, vaddr_t, vsize_t,
631 vm_prot_t);
632void uvm_km_free(struct vm_map *, vaddr_t, vsize_t,
633 uvm_flag_t);
634
635struct vm_map *uvm_km_suballoc(struct vm_map *, vaddr_t *,
636 vaddr_t *, vsize_t, int, bool,
637 struct vm_map *);
638#ifdef _KERNEL
639int uvm_km_kmem_alloc(vmem_t *, vmem_size_t, vm_flag_t,
640 vmem_addr_t *);
641void uvm_km_kmem_free(vmem_t *, vmem_addr_t, vmem_size_t);
642bool uvm_km_va_starved_p(void);
643#endif
644
645/* uvm_map.c */
646int uvm_map(struct vm_map *, vaddr_t *, vsize_t,
647 struct uvm_object *, voff_t, vsize_t,
648 uvm_flag_t);
649int uvm_map_pageable(struct vm_map *, vaddr_t,
650 vaddr_t, bool, int);
651int uvm_map_pageable_all(struct vm_map *, int, vsize_t);
652bool uvm_map_checkprot(struct vm_map *, vaddr_t,
653 vaddr_t, vm_prot_t);
654int uvm_map_protect(struct vm_map *, vaddr_t,
655 vaddr_t, vm_prot_t, bool);
656struct vmspace *uvmspace_alloc(vaddr_t, vaddr_t, bool);
657void uvmspace_init(struct vmspace *, struct pmap *,
658 vaddr_t, vaddr_t, bool);
659void uvmspace_exec(struct lwp *, vaddr_t, vaddr_t, bool);
660void uvmspace_spawn(struct lwp *, vaddr_t, vaddr_t, bool);
661struct vmspace *uvmspace_fork(struct vmspace *);
662void uvmspace_addref(struct vmspace *);
663void uvmspace_free(struct vmspace *);
664void uvmspace_share(struct proc *, struct proc *);
665void uvmspace_unshare(struct lwp *);
666
667void uvm_whatis(uintptr_t, void (*)(const char *, ...));
668
669/* uvm_meter.c */
670int uvm_sysctl(int *, u_int, void *, size_t *,
671 void *, size_t, struct proc *);
672int uvm_pctparam_check(struct uvm_pctparam *, int);
673void uvm_pctparam_set(struct uvm_pctparam *, int);
674int uvm_pctparam_get(struct uvm_pctparam *);
675void uvm_pctparam_init(struct uvm_pctparam *, int,
676 int (*)(struct uvm_pctparam *, int));
677int uvm_pctparam_createsysctlnode(struct uvm_pctparam *,
678 const char *, const char *);
679
680/* uvm_mmap.c */
681int uvm_mmap_dev(struct proc *, void **, size_t, dev_t,
682 off_t);
683int uvm_mmap_anon(struct proc *, void **, size_t);
684vaddr_t uvm_default_mapaddr(struct proc *, vaddr_t, vsize_t,
685 int);
686
687/* uvm_mremap.c */
688int uvm_mremap(struct vm_map *, vaddr_t, vsize_t,
689 struct vm_map *, vaddr_t *, vsize_t,
690 struct proc *, int);
691
692/* uvm_object.c */
693void uvm_obj_init(struct uvm_object *,
694 const struct uvm_pagerops *, bool, u_int);
695void uvm_obj_setlock(struct uvm_object *, kmutex_t *);
696void uvm_obj_destroy(struct uvm_object *, bool);
697int uvm_obj_wirepages(struct uvm_object *, off_t, off_t,
698 struct pglist *);
699void uvm_obj_unwirepages(struct uvm_object *, off_t, off_t);
700
701/* uvm_page.c */
702struct vm_page *uvm_pagealloc_strat(struct uvm_object *,
703 voff_t, struct vm_anon *, int, int, int);
704#define uvm_pagealloc(obj, off, anon, flags) \
705 uvm_pagealloc_strat((obj), (off), (anon), (flags), \
706 UVM_PGA_STRAT_NORMAL, 0)
707void uvm_pagereplace(struct vm_page *,
708 struct vm_page *);
709void uvm_pagerealloc(struct vm_page *,
710 struct uvm_object *, voff_t);
711/* Actually, uvm_page_physload takes PF#s which need their own type */
712void uvm_page_physload(paddr_t, paddr_t, paddr_t,
713 paddr_t, int);
714void uvm_setpagesize(void);
715
716/* uvm_pager.c */
717void uvm_aio_biodone(struct buf *);
718void uvm_aio_aiodone(struct buf *);
719void uvm_aio_aiodone_pages(struct vm_page **, int, bool,
720 int);
721
722/* uvm_pdaemon.c */
723void uvm_pageout(void *);
724struct work;
725void uvm_aiodone_worker(struct work *, void *);
726void uvm_pageout_start(int);
727void uvm_pageout_done(int);
728void uvm_estimatepageable(int *, int *);
729
730/* uvm_pglist.c */
731int uvm_pglistalloc(psize_t, paddr_t, paddr_t,
732 paddr_t, paddr_t, struct pglist *, int, int);
733void uvm_pglistfree(struct pglist *);
734
735/* uvm_swap.c */
736void uvm_swap_init(void);
737
738/* uvm_unix.c */
739int uvm_grow(struct proc *, vaddr_t);
740
741/* uvm_user.c */
742void uvm_deallocate(struct vm_map *, vaddr_t, vsize_t);
743
744/* uvm_vnode.c */
745void uvm_vnp_setsize(struct vnode *, voff_t);
746void uvm_vnp_setwritesize(struct vnode *, voff_t);
747int uvn_findpages(struct uvm_object *, voff_t,
748 int *, struct vm_page **, int);
749bool uvn_text_p(struct uvm_object *);
750bool uvn_clean_p(struct uvm_object *);
751bool uvn_needs_writefault_p(struct uvm_object *);
752
753/* kern_malloc.c */
754void kmeminit_nkmempages(void);
755extern int nkmempages;
756
757#endif /* _KERNEL */
758
759#endif /* _UVM_UVM_EXTERN_H_ */
760