1/* $NetBSD: uvm_extern.h,v 1.213 2018/05/28 21:04:35 chs 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 0x00010000 /* find space */
125#define UVM_FLAG_OVERLAY 0x00020000 /* establish overlay */
126#define UVM_FLAG_NOMERGE 0x00040000 /* don't merge map entries */
127#define UVM_FLAG_COPYONW 0x00080000 /* set copy_on_write flag */
128#define UVM_FLAG_AMAPPAD 0x00100000 /* for bss: pad amap */
129#define UVM_FLAG_TRYLOCK 0x00200000 /* fail if we can not lock map */
130#define UVM_FLAG_NOWAIT 0x00400000 /* not allowed to sleep */
131#define UVM_FLAG_WAITVA 0x00800000 /* wait for va */
132#define UVM_FLAG_VAONLY 0x02000000 /* unmap: no pages are mapped */
133#define UVM_FLAG_COLORMATCH 0x04000000 /* match color given in off */
134#define UVM_FLAG_UNMAP 0x08000000 /* unmap existing entries */
135
136#define UVM_FLAG_BITS "\177\020\
137F\0\3\
138:\0PROT=NONE\0\
139:\1PROT=R\0\
140:\2PROT=W\0\
141:\3PROT=RW\0\
142:\4PROT=X\0\
143:\5PROT=RX\0\
144:\6PROT=WX\0\
145:\7PROT=RWX\0\
146F\4\2\
147:\0INH=SHARE\0\
148:\1INH=COPY\0\
149:\2INH=NONE\0\
150:\3INH=DONATE\0\
151F\10\3\
152:\0MAXPROT=NONE\0\
153:\1MAXPROT=R\0\
154:\2MAXPROT=W\0\
155:\3MAXPROT=RW\0\
156:\4MAXPROT=X\0\
157:\5MAXPROT=RX\0\
158:\6MAXPROT=WX\0\
159:\7MAXPROT=RWX\0\
160F\14\3\
161:\0ADV=NORMAL\0\
162:\1ADV=RANDOM\0\
163:\2ADV=SEQUENTIAL\0\
164:\3ADV=WILLNEED\0\
165:\4ADV=DONTNEED\0\
166:\5ADV=NOREUSE\0\
167b\20FIXED\0\
168b\21OVERLAY\0\
169b\22NOMERGE\0\
170b\23COPYONW\0\
171b\24AMAPPAD\0\
172b\25TRYLOCK\0\
173b\26NOWAIT\0\
174b\27WAITVA\0\
175b\30VAONLY\0\
176b\31COLORMATCH\0\
177b\32UNMAP\0\
178"
179
180/* macros to extract info */
181#define UVM_PROTECTION(X) ((X) & UVM_PROT_MASK)
182#define UVM_INHERIT(X) (((X) & UVM_INH_MASK) >> 4)
183#define UVM_MAXPROTECTION(X) (((X) >> 8) & UVM_PROT_MASK)
184#define UVM_ADVICE(X) (((X) >> 12) & UVM_ADV_MASK)
185
186#define UVM_MAPFLAG(PROT,MAXPROT,INH,ADVICE,FLAGS) \
187 (((MAXPROT) << 8)|(PROT)|(INH)|((ADVICE) << 12)|(FLAGS))
188
189/* magic offset value: offset not known(obj) or don't care(!obj) */
190#define UVM_UNKNOWN_OFFSET ((voff_t) -1)
191
192/*
193 * the following defines are for uvm_km_alloc/free's flags
194 */
195#define UVM_KMF_WIRED 0x1 /* allocation type: wired */
196#define UVM_KMF_PAGEABLE 0x2 /* allocation type: pageable */
197#define UVM_KMF_VAONLY 0x4 /* allocation type: VA only */
198#define UVM_KMF_TYPEMASK (UVM_KMF_VAONLY | UVM_KMF_PAGEABLE | UVM_KMF_WIRED)
199#define UVM_KMF_CANFAIL 0x8 /* caller handles failure */
200#define UVM_KMF_ZERO 0x10 /* want zero filled memory */
201#define UVM_KMF_EXEC 0x20 /* need executable mapping */
202#define UVM_KMF_TRYLOCK UVM_FLAG_TRYLOCK /* try locking only */
203#define UVM_KMF_NOWAIT UVM_FLAG_NOWAIT /* not allowed to sleep */
204#define UVM_KMF_WAITVA UVM_FLAG_WAITVA /* sleep for va */
205#define UVM_KMF_COLORMATCH UVM_FLAG_COLORMATCH /* start at color in align */
206
207/*
208 * the following defines the strategies for uvm_pagealloc_strat()
209 */
210#define UVM_PGA_STRAT_NORMAL 0 /* priority (low id to high) walk */
211#define UVM_PGA_STRAT_ONLY 1 /* only specified free list */
212#define UVM_PGA_STRAT_FALLBACK 2 /* ONLY falls back on NORMAL */
213
214/*
215 * flags for uvm_pagealloc_strat()
216 */
217#define UVM_PGA_USERESERVE 0x0001 /* ok to use reserve pages */
218#define UVM_PGA_ZERO 0x0002 /* returned page must be zero'd */
219
220/*
221 * flags for ubc_uiomove()
222 */
223#define UBC_READ 0x001 /* reading from object */
224#define UBC_WRITE 0x002 /* writing to object */
225#define UBC_FAULTBUSY 0x004 /* nobody else is using these pages, so busy
226 * them at alloc and unbusy at release (e.g.,
227 * for writes extending a file) */
228
229/*
230 * flags for ubc_release()
231 */
232#define UBC_UNMAP 0x010 /* unmap pages now -- don't leave the
233 * mappings cached indefinitely */
234
235/*
236 * flags for ubc_uiomove()
237 */
238#define UBC_PARTIALOK 0x100 /* return early on error; otherwise, zero all
239 * remaining bytes after error */
240
241/*
242 * flags for uvn_findpages().
243 */
244#define UFP_ALL 0x00
245#define UFP_NOWAIT 0x01
246#define UFP_NOALLOC 0x02
247#define UFP_NOCACHE 0x04
248#define UFP_NORDONLY 0x08
249#define UFP_DIRTYONLY 0x10
250#define UFP_BACKWARD 0x20
251
252/*
253 * lockflags that control the locking behavior of various functions.
254 */
255#define UVM_LK_ENTER 0x00000001 /* map locked on entry */
256#define UVM_LK_EXIT 0x00000002 /* leave map locked on exit */
257
258/*
259 * Default number of pages to allocate on the stack
260 */
261#define UBC_MAX_PAGES 8
262
263/*
264 * Value representing inactive emap.
265 */
266#define UVM_EMAP_INACTIVE (0)
267
268/*
269 * structures
270 */
271
272struct buf;
273struct core;
274struct loadavg;
275struct mount;
276struct pglist;
277struct proc;
278struct uio;
279struct uvm_object;
280struct vm_anon;
281struct vmspace;
282struct pmap;
283struct vnode;
284struct vm_map_entry;
285struct vm_map;
286struct vm_page;
287struct vmtotal;
288
289/*
290 * uvm_pctparam: parameter to be shown as percentage to user.
291 */
292
293#define UVM_PCTPARAM_SHIFT 8
294#define UVM_PCTPARAM_SCALE (1 << UVM_PCTPARAM_SHIFT)
295#define UVM_PCTPARAM_APPLY(pct, x) \
296 (((x) * (pct)->pct_scaled) >> UVM_PCTPARAM_SHIFT)
297struct uvm_pctparam {
298 int pct_pct; /* percent [0, 100] */ /* should be the first member */
299 int pct_scaled;
300 int (*pct_check)(struct uvm_pctparam *, int);
301};
302
303/*
304 * uvmexp: global data structures that are exported to parts of the kernel
305 * other than the vm system.
306 */
307
308struct uvmexp {
309 /* vm_page constants */
310 int pagesize; /* size of a page (PAGE_SIZE): must be power of 2 */
311 int pagemask; /* page mask */
312 int pageshift; /* page shift */
313
314 /* vm_page counters */
315 int npages; /* number of pages we manage */
316 int free; /* number of free pages */
317 int paging; /* number of pages in the process of being paged out */
318 int wired; /* number of wired pages */
319
320 /*
321 * Adding anything before this line will break binary compatibility
322 * with top(1) on NetBSD 1.5.
323 */
324
325 int ncolors; /* number of page color buckets: must be p-o-2 */
326 int colormask; /* color bucket mask */
327
328 int zeropages; /* number of zero'd pages */
329 int reserve_pagedaemon; /* number of pages reserved for pagedaemon */
330 int reserve_kernel; /* number of pages reserved for kernel */
331 unsigned anonpages; /* number of pages used by anon mappings */
332 unsigned filepages; /* number of pages used by cached file data */
333 unsigned execpages; /* number of pages used by cached exec data */
334
335 /* pageout params */
336 int freemin; /* min number of free pages */
337 int freetarg; /* target number of free pages */
338 int wiredmax; /* max number of wired pages */
339
340 /* swap */
341 int nswapdev; /* number of configured swap devices in system */
342 int swpages; /* number of PAGE_SIZE'ed swap pages */
343 int swpgavail; /* number of swap pages currently available */
344 int swpginuse; /* number of swap pages in use */
345 int swpgonly; /* number of swap pages in use, not also in RAM */
346 int nswget; /* number of times fault calls uvm_swap_get() */
347
348 /* stat counters. XXX: should be 64-bit counters */
349 int _unused_faults; /* page fault count */
350 int _unused_traps; /* trap count */
351 int _unused_intrs; /* interrupt count */
352 int _unused_swtch; /* context switch count */
353 int _unused_softs; /* software interrupt count */
354 int _unused_syscalls; /* system calls */
355 int pageins; /* pagein operation count */
356 /* pageouts are in pdpageouts below */
357 int _unused1;
358 int _unused2;
359 int pgswapin; /* pages swapped in */
360 int pgswapout; /* pages swapped out */
361 int forks; /* forks */
362 int forks_ppwait; /* forks where parent waits */
363 int forks_sharevm; /* forks where vmspace is shared */
364 int pga_zerohit; /* pagealloc where zero wanted and zero
365 was available */
366 int pga_zeromiss; /* pagealloc where zero wanted and zero
367 not available */
368 int zeroaborts; /* number of times page zeroing was
369 aborted */
370 int colorhit; /* pagealloc where we got optimal color */
371 int colormiss; /* pagealloc where we didn't */
372 int cpuhit; /* pagealloc where we allocated locally */
373 int cpumiss; /* pagealloc where we didn't */
374
375 /* fault subcounters. XXX: should be 64-bit counters */
376 int fltnoram; /* number of times fault was out of ram */
377 int fltnoanon; /* number of times fault was out of anons */
378 int fltpgwait; /* number of times fault had to wait on a page */
379 int fltpgrele; /* number of times fault found a released page */
380 int fltrelck; /* number of times fault relock called */
381 int fltrelckok; /* number of times fault relock is a success */
382 int fltanget; /* number of times fault gets anon page */
383 int fltanretry; /* number of times fault retrys an anon get */
384 int fltamcopy; /* number of times fault clears "needs copy" */
385 int fltnamap; /* number of times fault maps a neighbor anon page */
386 int fltnomap; /* number of times fault maps a neighbor obj page */
387 int fltlget; /* number of times fault does a locked pgo_get */
388 int fltget; /* number of times fault does an unlocked get */
389 int flt_anon; /* number of times fault anon (case 1a) */
390 int flt_acow; /* number of times fault anon cow (case 1b) */
391 int flt_obj; /* number of times fault is on object page (2a) */
392 int flt_prcopy; /* number of times fault promotes with copy (2b) */
393 int flt_przero; /* number of times fault promotes with zerofill (2b) */
394
395 /* daemon counters. XXX: should be 64-bit counters */
396 int pdwoke; /* number of times daemon woke up */
397 int pdrevs; /* number of times daemon rev'd clock hand */
398 int _unused3;
399 int pdfreed; /* number of pages daemon freed since boot */
400 int pdscans; /* number of pages daemon scanned since boot */
401 int pdanscan; /* number of anonymous pages scanned by daemon */
402 int pdobscan; /* number of object pages scanned by daemon */
403 int pdreact; /* number of pages daemon reactivated since boot */
404 int pdbusy; /* number of times daemon found a busy page */
405 int pdpageouts; /* number of times daemon started a pageout */
406 int pdpending; /* number of times daemon got a pending pagout */
407 int pddeact; /* number of pages daemon deactivates */
408 int pdreanon; /* anon pages reactivated due to thresholds */
409 int pdrefile; /* file pages reactivated due to thresholds */
410 int pdreexec; /* executable pages reactivated due to thresholds */
411
412 int bootpages; /* number of pages stolen at boot */
413};
414
415/*
416 * The following structure is 64-bit alignment safe. New elements
417 * should only be added to the end of this structure so binary
418 * compatibility can be preserved.
419 */
420struct uvmexp_sysctl {
421 int64_t pagesize;
422 int64_t pagemask;
423 int64_t pageshift;
424 int64_t npages;
425 int64_t free;
426 int64_t active;
427 int64_t inactive;
428 int64_t paging;
429 int64_t wired;
430 int64_t zeropages;
431 int64_t reserve_pagedaemon;
432 int64_t reserve_kernel;
433 int64_t freemin;
434 int64_t freetarg;
435 int64_t inactarg; /* unused */
436 int64_t wiredmax;
437 int64_t nswapdev;
438 int64_t swpages;
439 int64_t swpginuse;
440 int64_t swpgonly;
441 int64_t nswget;
442 int64_t unused1; /* unused; was nanon */
443 int64_t cpuhit;
444 int64_t cpumiss;
445 int64_t faults;
446 int64_t traps;
447 int64_t intrs;
448 int64_t swtch;
449 int64_t softs;
450 int64_t syscalls;
451 int64_t pageins;
452 int64_t swapins; /* unused */
453 int64_t swapouts; /* unused */
454 int64_t pgswapin;
455 int64_t pgswapout;
456 int64_t forks;
457 int64_t forks_ppwait;
458 int64_t forks_sharevm;
459 int64_t pga_zerohit;
460 int64_t pga_zeromiss;
461 int64_t zeroaborts;
462 int64_t fltnoram;
463 int64_t fltnoanon;
464 int64_t fltpgwait;
465 int64_t fltpgrele;
466 int64_t fltrelck;
467 int64_t fltrelckok;
468 int64_t fltanget;
469 int64_t fltanretry;
470 int64_t fltamcopy;
471 int64_t fltnamap;
472 int64_t fltnomap;
473 int64_t fltlget;
474 int64_t fltget;
475 int64_t flt_anon;
476 int64_t flt_acow;
477 int64_t flt_obj;
478 int64_t flt_prcopy;
479 int64_t flt_przero;
480 int64_t pdwoke;
481 int64_t pdrevs;
482 int64_t unused4;
483 int64_t pdfreed;
484 int64_t pdscans;
485 int64_t pdanscan;
486 int64_t pdobscan;
487 int64_t pdreact;
488 int64_t pdbusy;
489 int64_t pdpageouts;
490 int64_t pdpending;
491 int64_t pddeact;
492 int64_t anonpages;
493 int64_t filepages;
494 int64_t execpages;
495 int64_t colorhit;
496 int64_t colormiss;
497 int64_t ncolors;
498 int64_t bootpages;
499 int64_t poolpages;
500};
501
502#ifdef _KERNEL
503/* we need this before including uvm_page.h on some platforms */
504extern struct uvmexp uvmexp;
505/* MD code needs this without including <uvm/uvm.h> */
506extern bool vm_page_zero_enable;
507#endif
508
509/*
510 * Finally, bring in standard UVM headers.
511 */
512#include <sys/vmmeter.h>
513#include <sys/queue.h>
514#include <sys/lock.h>
515#ifdef _KERNEL
516#include <sys/vmem.h>
517#endif
518#include <uvm/uvm_param.h>
519#include <uvm/uvm_prot.h>
520#include <uvm/uvm_pmap.h>
521#if defined(_KERNEL) || defined(_KMEMUSER)
522#include <uvm/uvm_map.h>
523#include <uvm/uvm_pager.h>
524#endif
525
526#ifdef _KERNEL
527/*
528 * Include the uvm_hotplug(9) API unconditionally until
529 * uvm_page_physload() et. al. are obsoleted
530 *
531 * After this, MD code will have to explicitly include it if needed.
532 */
533#include <uvm/uvm_physseg.h>
534#endif
535
536/*
537 * helpers for calling ubc_release()
538 */
539#ifdef PMAP_CACHE_VIVT
540#define UBC_WANT_UNMAP(vp) (((vp)->v_iflag & VI_TEXT) != 0)
541#else
542#define UBC_WANT_UNMAP(vp) false
543#endif
544#define UBC_UNMAP_FLAG(vp) (UBC_WANT_UNMAP(vp) ? UBC_UNMAP : 0)
545
546#if defined(_KERNEL) || defined(_KMEMUSER)
547/*
548 * Shareable process virtual address space.
549 * May eventually be merged with vm_map.
550 * Several fields are temporary (text, data stuff).
551 */
552struct vmspace {
553 struct vm_map vm_map; /* VM address map */
554 int vm_refcnt; /* number of references *
555 * note: protected by vm_map.misc_lock */
556 void * vm_shm; /* SYS5 shared memory private data XXX */
557/* we copy from vm_startcopy to the end of the structure on fork */
558#define vm_startcopy vm_rssize
559 segsz_t vm_rssize; /* current resident set size in pages */
560 segsz_t vm_rssmax; /* max resident size in pages */
561 segsz_t vm_tsize; /* text size (pages) XXX */
562 segsz_t vm_dsize; /* data size (pages) XXX */
563 segsz_t vm_ssize; /* stack size (pages) */
564 segsz_t vm_issize; /* initial unmapped stack size (pages) */
565 void * vm_taddr; /* user virtual address of text XXX */
566 void * vm_daddr; /* user virtual address of data XXX */
567 void *vm_maxsaddr; /* user VA at max stack growth */
568 void *vm_minsaddr; /* user VA at top of stack */
569 size_t vm_aslr_delta_mmap; /* mmap() random delta for ASLR */
570};
571#define VMSPACE_IS_KERNEL_P(vm) VM_MAP_IS_KERNEL(&(vm)->vm_map)
572#endif
573
574#ifdef _KERNEL
575
576/*
577 * used to keep state while iterating over the map for a core dump.
578 */
579struct uvm_coredump_state {
580 void *cookie; /* opaque for the caller */
581 vaddr_t start; /* start of region */
582 vaddr_t realend; /* real end of region */
583 vaddr_t end; /* virtual end of region */
584 vm_prot_t prot; /* protection of region */
585 int flags; /* flags; see below */
586};
587
588#define UVM_COREDUMP_STACK 0x01 /* region is user stack */
589
590/*
591 * the various kernel maps, owned by MD code
592 */
593extern struct vm_map *kernel_map;
594extern struct vm_map *phys_map;
595
596/*
597 * macros
598 */
599
600#define vm_resident_count(vm) (pmap_resident_count((vm)->vm_map.pmap))
601
602
603/* vm_machdep.c */
604int vmapbuf(struct buf *, vsize_t);
605void vunmapbuf(struct buf *, vsize_t);
606void ktext_write(void *, const void *, size_t);
607
608/* uvm_aobj.c */
609struct uvm_object *uao_create(voff_t, int);
610void uao_set_pgfl(struct uvm_object *, int);
611void uao_detach(struct uvm_object *);
612void uao_reference(struct uvm_object *);
613
614/* uvm_bio.c */
615void ubc_init(void);
616void ubchist_init(void);
617int ubc_uiomove(struct uvm_object *, struct uio *, vsize_t,
618 int, int);
619void ubc_zerorange(struct uvm_object *, off_t, size_t, int);
620void ubc_purge(struct uvm_object *);
621
622/* uvm_fault.c */
623#define uvm_fault(m, a, p) uvm_fault_internal(m, a, p, 0)
624int uvm_fault_internal(struct vm_map *, vaddr_t, vm_prot_t, int);
625 /* handle a page fault */
626
627/* uvm_glue.c */
628#if defined(KGDB)
629void uvm_chgkprot(void *, size_t, int);
630#endif
631void uvm_proc_fork(struct proc *, struct proc *, bool);
632void uvm_lwp_fork(struct lwp *, struct lwp *,
633 void *, size_t, void (*)(void *), void *);
634int uvm_coredump_walkmap(struct proc *,
635 int (*)(struct uvm_coredump_state *), void *);
636int uvm_coredump_count_segs(struct proc *);
637void uvm_proc_exit(struct proc *);
638void uvm_lwp_exit(struct lwp *);
639void uvm_init_limits(struct proc *);
640bool uvm_kernacc(void *, size_t, vm_prot_t);
641__dead void uvm_scheduler(void);
642vaddr_t uvm_uarea_alloc(void);
643void uvm_uarea_free(vaddr_t);
644vaddr_t uvm_uarea_system_alloc(struct cpu_info *);
645void uvm_uarea_system_free(vaddr_t);
646vaddr_t uvm_lwp_getuarea(lwp_t *);
647void uvm_lwp_setuarea(lwp_t *, vaddr_t);
648int uvm_vslock(struct vmspace *, void *, size_t, vm_prot_t);
649void uvm_vsunlock(struct vmspace *, void *, size_t);
650void uvm_cpu_attach(struct cpu_info *);
651
652
653/* uvm_init.c */
654void uvm_md_init(void);
655void uvm_init(void);
656
657/* uvm_io.c */
658int uvm_io(struct vm_map *, struct uio *, int);
659
660/* uvm_km.c */
661vaddr_t uvm_km_alloc(struct vm_map *, vsize_t, vsize_t,
662 uvm_flag_t);
663int uvm_km_protect(struct vm_map *, vaddr_t, vsize_t,
664 vm_prot_t);
665void uvm_km_free(struct vm_map *, vaddr_t, vsize_t,
666 uvm_flag_t);
667
668struct vm_map *uvm_km_suballoc(struct vm_map *, vaddr_t *,
669 vaddr_t *, vsize_t, int, bool,
670 struct vm_map *);
671int uvm_km_kmem_alloc(vmem_t *, vmem_size_t, vm_flag_t,
672 vmem_addr_t *);
673void uvm_km_kmem_free(vmem_t *, vmem_addr_t, vmem_size_t);
674bool uvm_km_va_starved_p(void);
675
676/* uvm_map.c */
677int uvm_map(struct vm_map *, vaddr_t *, vsize_t,
678 struct uvm_object *, voff_t, vsize_t,
679 uvm_flag_t);
680int uvm_map_pageable(struct vm_map *, vaddr_t,
681 vaddr_t, bool, int);
682int uvm_map_pageable_all(struct vm_map *, int, vsize_t);
683bool uvm_map_checkprot(struct vm_map *, vaddr_t,
684 vaddr_t, vm_prot_t);
685int uvm_map_protect(struct vm_map *, vaddr_t,
686 vaddr_t, vm_prot_t, bool);
687int uvm_map_protect_user(struct lwp *, vaddr_t, vaddr_t,
688 vm_prot_t);
689struct vmspace *uvmspace_alloc(vaddr_t, vaddr_t, bool);
690void uvmspace_init(struct vmspace *, struct pmap *,
691 vaddr_t, vaddr_t, bool);
692void uvmspace_exec(struct lwp *, vaddr_t, vaddr_t, bool);
693void uvmspace_spawn(struct lwp *, vaddr_t, vaddr_t, bool);
694struct vmspace *uvmspace_fork(struct vmspace *);
695void uvmspace_addref(struct vmspace *);
696void uvmspace_free(struct vmspace *);
697void uvmspace_share(struct proc *, struct proc *);
698void uvmspace_unshare(struct lwp *);
699
700void uvm_whatis(uintptr_t, void (*)(const char *, ...));
701
702/* uvm_meter.c */
703int uvm_sysctl(int *, u_int, void *, size_t *,
704 void *, size_t, struct proc *);
705int uvm_pctparam_check(struct uvm_pctparam *, int);
706void uvm_pctparam_set(struct uvm_pctparam *, int);
707int uvm_pctparam_get(struct uvm_pctparam *);
708void uvm_pctparam_init(struct uvm_pctparam *, int,
709 int (*)(struct uvm_pctparam *, int));
710int uvm_pctparam_createsysctlnode(struct uvm_pctparam *,
711 const char *, const char *);
712
713/* uvm_mmap.c */
714int uvm_mmap_dev(struct proc *, void **, size_t, dev_t,
715 off_t);
716int uvm_mmap_anon(struct proc *, void **, size_t);
717vaddr_t uvm_default_mapaddr(struct proc *, vaddr_t, vsize_t,
718 int);
719
720/* uvm_mremap.c */
721int uvm_mremap(struct vm_map *, vaddr_t, vsize_t,
722 struct vm_map *, vaddr_t *, vsize_t,
723 struct proc *, int);
724
725/* uvm_object.c */
726void uvm_obj_init(struct uvm_object *,
727 const struct uvm_pagerops *, bool, u_int);
728void uvm_obj_setlock(struct uvm_object *, kmutex_t *);
729void uvm_obj_destroy(struct uvm_object *, bool);
730int uvm_obj_wirepages(struct uvm_object *, off_t, off_t,
731 struct pglist *);
732void uvm_obj_unwirepages(struct uvm_object *, off_t, off_t);
733
734/* uvm_page.c */
735struct vm_page *uvm_pagealloc_strat(struct uvm_object *,
736 voff_t, struct vm_anon *, int, int, int);
737#define uvm_pagealloc(obj, off, anon, flags) \
738 uvm_pagealloc_strat((obj), (off), (anon), (flags), \
739 UVM_PGA_STRAT_NORMAL, 0)
740void uvm_pagereplace(struct vm_page *,
741 struct vm_page *);
742void uvm_pagerealloc(struct vm_page *,
743 struct uvm_object *, voff_t);
744void uvm_setpagesize(void);
745
746/* uvm_pager.c */
747void uvm_aio_biodone(struct buf *);
748void uvm_aio_aiodone(struct buf *);
749void uvm_aio_aiodone_pages(struct vm_page **, int, bool,
750 int);
751
752/* uvm_pdaemon.c */
753void uvm_pageout(void *);
754struct work;
755void uvm_aiodone_worker(struct work *, void *);
756void uvm_pageout_start(int);
757void uvm_pageout_done(int);
758void uvm_estimatepageable(int *, int *);
759
760/* uvm_pglist.c */
761int uvm_pglistalloc(psize_t, paddr_t, paddr_t,
762 paddr_t, paddr_t, struct pglist *, int, int);
763void uvm_pglistfree(struct pglist *);
764
765/* uvm_swap.c */
766void uvm_swap_init(void);
767
768/* uvm_unix.c */
769int uvm_grow(struct proc *, vaddr_t);
770
771/* uvm_user.c */
772void uvm_deallocate(struct vm_map *, vaddr_t, vsize_t);
773
774/* uvm_vnode.c */
775void uvm_vnp_setsize(struct vnode *, voff_t);
776void uvm_vnp_setwritesize(struct vnode *, voff_t);
777int uvn_findpages(struct uvm_object *, voff_t,
778 int *, struct vm_page **, int);
779bool uvn_text_p(struct uvm_object *);
780bool uvn_clean_p(struct uvm_object *);
781bool uvn_needs_writefault_p(struct uvm_object *);
782
783/* kern_malloc.c */
784void kmeminit_nkmempages(void);
785extern int nkmempages;
786
787#endif /* _KERNEL */
788
789#endif /* _UVM_UVM_EXTERN_H_ */
790