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custom message type for VM_INFO
[minix3.git] / sys / uvm / uvm_extern.h
blobefe82e8f2c0d020a94c2c67a0aea896fa61fee8b
1 /* $NetBSD: uvm_extern.h,v 1.185 2013/11/14 12:07:11 martin 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
179 #define UBC_WRITE 0x002
180 #define UBC_FAULTBUSY 0x004
181
182 /*
183 * flags for ubc_release()
184 */
185 #define UBC_UNMAP 0x010
186
187 /*
188 * flags for ubc_uiomve()
189 */
190 #define UBC_PARTIALOK 0x100
191
192 /*
193 * flags for uvn_findpages().
194 */
195 #define UFP_ALL 0x00
196 #define UFP_NOWAIT 0x01
197 #define UFP_NOALLOC 0x02
198 #define UFP_NOCACHE 0x04
199 #define UFP_NORDONLY 0x08
200 #define UFP_DIRTYONLY 0x10
201 #define UFP_BACKWARD 0x20
202
203 /*
204 * lockflags that control the locking behavior of various functions.
205 */
206 #define UVM_LK_ENTER 0x00000001 /* map locked on entry */
207 #define UVM_LK_EXIT 0x00000002 /* leave map locked on exit */
208
209 /*
210 * Default number of pages to allocate on the stack
211 */
212 #define UBC_MAX_PAGES 8
213
214 /*
215 * Value representing inactive emap.
216 */
217 #define UVM_EMAP_INACTIVE (0)
218
219 /*
220 * structures
221 */
222
223 struct buf;
224 struct core;
225 struct loadavg;
226 struct mount;
227 struct pglist;
228 struct proc;
229 struct uio;
230 struct uvm_object;
231 struct vm_anon;
232 struct vmspace;
233 struct pmap;
234 struct vnode;
235 struct simplelock;
236 struct vm_map_entry;
237 struct vm_map;
238 struct vm_page;
239 struct vmtotal;
240
241 /*
242 * uvm_pctparam: parameter to be shown as percentage to user.
243 */
244
245 #define UVM_PCTPARAM_SHIFT 8
246 #define UVM_PCTPARAM_SCALE (1 << UVM_PCTPARAM_SHIFT)
247 #define UVM_PCTPARAM_APPLY(pct, x) \
248 (((x) * (pct)->pct_scaled) >> UVM_PCTPARAM_SHIFT)
249 struct uvm_pctparam {
250 int pct_pct; /* percent [0, 100] */ /* should be the first member */
251 int pct_scaled;
252 int (*pct_check)(struct uvm_pctparam *, int);
253 };
254
255 /*
256 * uvmexp: global data structures that are exported to parts of the kernel
257 * other than the vm system.
258 */
259
260 struct uvmexp {
261 /* vm_page constants */
262 int pagesize; /* size of a page (PAGE_SIZE): must be power of 2 */
263 int pagemask; /* page mask */
264 int pageshift; /* page shift */
265
266 /* vm_page counters */
267 int npages; /* number of pages we manage */
268 int free; /* number of free pages */
269 int paging; /* number of pages in the process of being paged out */
270 int wired; /* number of wired pages */
271
272 /*
273 * Adding anything before this line will break binary compatibility
274 * with top(1) on NetBSD 1.5.
275 */
276
277 int ncolors; /* number of page color buckets: must be p-o-2 */
278 int colormask; /* color bucket mask */
279
280 int zeropages; /* number of zero'd pages */
281 int reserve_pagedaemon; /* number of pages reserved for pagedaemon */
282 int reserve_kernel; /* number of pages reserved for kernel */
283 unsigned anonpages; /* number of pages used by anon mappings */
284 unsigned filepages; /* number of pages used by cached file data */
285 unsigned execpages; /* number of pages used by cached exec data */
286
287 /* pageout params */
288 int freemin; /* min number of free pages */
289 int freetarg; /* target number of free pages */
290 int wiredmax; /* max number of wired pages */
291
292 /* swap */
293 int nswapdev; /* number of configured swap devices in system */
294 int swpages; /* number of PAGE_SIZE'ed swap pages */
295 int swpgavail; /* number of swap pages currently available */
296 int swpginuse; /* number of swap pages in use */
297 int swpgonly; /* number of swap pages in use, not also in RAM */
298 int nswget; /* number of times fault calls uvm_swap_get() */
299
300 /* stat counters. XXX: should be 64-bit counters */
301 int _unused_faults; /* page fault count */
302 int _unused_traps; /* trap count */
303 int _unused_intrs; /* interrupt count */
304 int _unused_swtch; /* context switch count */
305 int _unused_softs; /* software interrupt count */
306 int _unused_syscalls; /* system calls */
307 int pageins; /* pagein operation count */
308 /* pageouts are in pdpageouts below */
309 int _unused1;
310 int _unused2;
311 int pgswapin; /* pages swapped in */
312 int pgswapout; /* pages swapped out */
313 int forks; /* forks */
314 int forks_ppwait; /* forks where parent waits */
315 int forks_sharevm; /* forks where vmspace is shared */
316 int pga_zerohit; /* pagealloc where zero wanted and zero
317 was available */
318 int pga_zeromiss; /* pagealloc where zero wanted and zero
319 not available */
320 int zeroaborts; /* number of times page zeroing was
321 aborted */
322 int colorhit; /* pagealloc where we got optimal color */
323 int colormiss; /* pagealloc where we didn't */
324 int cpuhit; /* pagealloc where we allocated locally */
325 int cpumiss; /* pagealloc where we didn't */
326
327 /* fault subcounters. XXX: should be 64-bit counters */
328 int fltnoram; /* number of times fault was out of ram */
329 int fltnoanon; /* number of times fault was out of anons */
330 int fltpgwait; /* number of times fault had to wait on a page */
331 int fltpgrele; /* number of times fault found a released page */
332 int fltrelck; /* number of times fault relock called */
333 int fltrelckok; /* number of times fault relock is a success */
334 int fltanget; /* number of times fault gets anon page */
335 int fltanretry; /* number of times fault retrys an anon get */
336 int fltamcopy; /* number of times fault clears "needs copy" */
337 int fltnamap; /* number of times fault maps a neighbor anon page */
338 int fltnomap; /* number of times fault maps a neighbor obj page */
339 int fltlget; /* number of times fault does a locked pgo_get */
340 int fltget; /* number of times fault does an unlocked get */
341 int flt_anon; /* number of times fault anon (case 1a) */
342 int flt_acow; /* number of times fault anon cow (case 1b) */
343 int flt_obj; /* number of times fault is on object page (2a) */
344 int flt_prcopy; /* number of times fault promotes with copy (2b) */
345 int flt_przero; /* number of times fault promotes with zerofill (2b) */
346
347 /* daemon counters. XXX: should be 64-bit counters */
348 int pdwoke; /* number of times daemon woke up */
349 int pdrevs; /* number of times daemon rev'd clock hand */
350 int _unused3;
351 int pdfreed; /* number of pages daemon freed since boot */
352 int pdscans; /* number of pages daemon scanned since boot */
353 int pdanscan; /* number of anonymous pages scanned by daemon */
354 int pdobscan; /* number of object pages scanned by daemon */
355 int pdreact; /* number of pages daemon reactivated since boot */
356 int pdbusy; /* number of times daemon found a busy page */
357 int pdpageouts; /* number of times daemon started a pageout */
358 int pdpending; /* number of times daemon got a pending pagout */
359 int pddeact; /* number of pages daemon deactivates */
360 int pdreanon; /* anon pages reactivated due to thresholds */
361 int pdrefile; /* file pages reactivated due to thresholds */
362 int pdreexec; /* executable pages reactivated due to thresholds */
363 };
364
365 /*
366 * The following structure is 64-bit alignment safe. New elements
367 * should only be added to the end of this structure so binary
368 * compatibility can be preserved.
369 */
370 struct uvmexp_sysctl {
371 int64_t pagesize;
372 int64_t pagemask;
373 int64_t pageshift;
374 int64_t npages;
375 int64_t free;
376 int64_t active;
377 int64_t inactive;
378 int64_t paging;
379 int64_t wired;
380 int64_t zeropages;
381 int64_t reserve_pagedaemon;
382 int64_t reserve_kernel;
383 int64_t freemin;
384 int64_t freetarg;
385 int64_t inactarg; /* unused */
386 int64_t wiredmax;
387 int64_t nswapdev;
388 int64_t swpages;
389 int64_t swpginuse;
390 int64_t swpgonly;
391 int64_t nswget;
392 int64_t unused1; /* unused; was nanon */
393 int64_t cpuhit;
394 int64_t cpumiss;
395 int64_t faults;
396 int64_t traps;
397 int64_t intrs;
398 int64_t swtch;
399 int64_t softs;
400 int64_t syscalls;
401 int64_t pageins;
402 int64_t swapins; /* unused */
403 int64_t swapouts; /* unused */
404 int64_t pgswapin;
405 int64_t pgswapout;
406 int64_t forks;
407 int64_t forks_ppwait;
408 int64_t forks_sharevm;
409 int64_t pga_zerohit;
410 int64_t pga_zeromiss;
411 int64_t zeroaborts;
412 int64_t fltnoram;
413 int64_t fltnoanon;
414 int64_t fltpgwait;
415 int64_t fltpgrele;
416 int64_t fltrelck;
417 int64_t fltrelckok;
418 int64_t fltanget;
419 int64_t fltanretry;
420 int64_t fltamcopy;
421 int64_t fltnamap;
422 int64_t fltnomap;
423 int64_t fltlget;
424 int64_t fltget;
425 int64_t flt_anon;
426 int64_t flt_acow;
427 int64_t flt_obj;
428 int64_t flt_prcopy;
429 int64_t flt_przero;
430 int64_t pdwoke;
431 int64_t pdrevs;
432 int64_t unused4;
433 int64_t pdfreed;
434 int64_t pdscans;
435 int64_t pdanscan;
436 int64_t pdobscan;
437 int64_t pdreact;
438 int64_t pdbusy;
439 int64_t pdpageouts;
440 int64_t pdpending;
441 int64_t pddeact;
442 int64_t anonpages;
443 int64_t filepages;
444 int64_t execpages;
445 int64_t colorhit;
446 int64_t colormiss;
447 int64_t ncolors;
448 };
449
450 #ifdef _KERNEL
451 /* we need this before including uvm_page.h on some platforms */
452 extern struct uvmexp uvmexp;
453 /* MD code needs this without including <uvm/uvm.h> */
454 extern bool vm_page_zero_enable;
455 #endif
456
457 /*
458 * Finally, bring in standard UVM headers.
459 */
460 #include <sys/vmmeter.h>
461 #include <sys/queue.h>
462 #include <sys/lock.h>
463 #ifdef _KERNEL
464 #include <sys/vmem.h>
465 #endif
466 #include <uvm/uvm_param.h>
467 #include <uvm/uvm_prot.h>
468 #include <uvm/uvm_pmap.h>
469 #include <uvm/uvm_map.h>
470 #include <uvm/uvm_pager.h>
471
472 /*
473 * helpers for calling ubc_release()
474 */
475 #ifdef PMAP_CACHE_VIVT
476 #define UBC_WANT_UNMAP(vp) (((vp)->v_iflag & VI_TEXT) != 0)
477 #else
478 #define UBC_WANT_UNMAP(vp) false
479 #endif
480 #define UBC_UNMAP_FLAG(vp) (UBC_WANT_UNMAP(vp) ? UBC_UNMAP : 0)
481
482 /*
483 * Shareable process virtual address space.
484 * May eventually be merged with vm_map.
485 * Several fields are temporary (text, data stuff).
486 */
487 struct vmspace {
488 struct vm_map vm_map; /* VM address map */
489 int vm_refcnt; /* number of references *
490 * note: protected by vm_map.ref_lock */
491 void * vm_shm; /* SYS5 shared memory private data XXX */
492 /* we copy from vm_startcopy to the end of the structure on fork */
493 #define vm_startcopy vm_rssize
494 segsz_t vm_rssize; /* current resident set size in pages */
495 segsz_t vm_swrss; /* resident set size before last swap */
496 segsz_t vm_tsize; /* text size (pages) XXX */
497 segsz_t vm_dsize; /* data size (pages) XXX */
498 segsz_t vm_ssize; /* stack size (pages) */
499 segsz_t vm_issize; /* initial unmapped stack size (pages) */
500 void * vm_taddr; /* user virtual address of text XXX */
501 void * vm_daddr; /* user virtual address of data XXX */
502 void *vm_maxsaddr; /* user VA at max stack growth */
503 void *vm_minsaddr; /* user VA at top of stack */
504 size_t vm_aslr_delta_mmap; /* mmap() random delta for ASLR */
505 };
506 #define VMSPACE_IS_KERNEL_P(vm) VM_MAP_IS_KERNEL(&(vm)->vm_map)
507
508 #ifdef _KERNEL
509
510 /*
511 * used to keep state while iterating over the map for a core dump.
512 */
513 struct uvm_coredump_state {
514 void *cookie; /* opaque for the caller */
515 vaddr_t start; /* start of region */
516 vaddr_t realend; /* real end of region */
517 vaddr_t end; /* virtual end of region */
518 vm_prot_t prot; /* protection of region */
519 int flags; /* flags; see below */
520 };
521
522 #define UVM_COREDUMP_STACK 0x01 /* region is user stack */
523
524 /*
525 * the various kernel maps, owned by MD code
526 */
527 extern struct vm_map *kernel_map;
528 extern struct vm_map *phys_map;
529
530 /*
531 * macros
532 */
533
534 #define vm_resident_count(vm) (pmap_resident_count((vm)->vm_map.pmap))
535
536
537 /* vm_machdep.c */
538 int vmapbuf(struct buf *, vsize_t);
539 void vunmapbuf(struct buf *, vsize_t);
540
541 /* uvm_aobj.c */
542 struct uvm_object *uao_create(vsize_t, int);
543 void uao_detach(struct uvm_object *);
544 void uao_reference(struct uvm_object *);
545
546 /* uvm_bio.c */
547 void ubc_init(void);
548 void * ubc_alloc(struct uvm_object *, voff_t, vsize_t *, int,
549 int);
550 void ubc_release(void *, int);
551 int ubc_uiomove(struct uvm_object *, struct uio *, vsize_t,
552 int, int);
553 void ubc_zerorange(struct uvm_object *, off_t, size_t, int);
554 void ubc_purge(struct uvm_object *);
555
556 /* uvm_emap.c */
557 void uvm_emap_sysinit(void);
558 #ifdef __HAVE_PMAP_EMAP
559 void uvm_emap_switch(lwp_t *);
560 #else
561 #define uvm_emap_switch(l)
562 #endif
563
564 u_int uvm_emap_gen_return(void);
565 void uvm_emap_update(u_int);
566
567 vaddr_t uvm_emap_alloc(vsize_t, bool);
568 void uvm_emap_free(vaddr_t, size_t);
569
570 void uvm_emap_enter(vaddr_t, struct vm_page **, u_int);
571 void uvm_emap_remove(vaddr_t, vsize_t);
572
573 #ifdef __HAVE_PMAP_EMAP
574 void uvm_emap_consume(u_int);
575 u_int uvm_emap_produce(void);
576 #else
577 #define uvm_emap_consume(x)
578 #define uvm_emap_produce() UVM_EMAP_INACTIVE
579 #endif
580
581 /* uvm_fault.c */
582 #define uvm_fault(m, a, p) uvm_fault_internal(m, a, p, 0)
583 int uvm_fault_internal(struct vm_map *, vaddr_t, vm_prot_t, int);
584 /* handle a page fault */
585
586 /* uvm_glue.c */
587 #if defined(KGDB)
588 void uvm_chgkprot(void *, size_t, int);
589 #endif
590 void uvm_proc_fork(struct proc *, struct proc *, bool);
591 void uvm_lwp_fork(struct lwp *, struct lwp *,
592 void *, size_t, void (*)(void *), void *);
593 int uvm_coredump_walkmap(struct proc *,
594 void *,
595 int (*)(struct proc *, void *,
596 struct uvm_coredump_state *), void *);
597 void uvm_proc_exit(struct proc *);
598 void uvm_lwp_exit(struct lwp *);
599 void uvm_init_limits(struct proc *);
600 bool uvm_kernacc(void *, size_t, vm_prot_t);
601 __dead void uvm_scheduler(void);
602 vaddr_t uvm_uarea_alloc(void);
603 void uvm_uarea_free(vaddr_t);
604 vaddr_t uvm_uarea_system_alloc(struct cpu_info *);
605 void uvm_uarea_system_free(vaddr_t);
606 vaddr_t uvm_lwp_getuarea(lwp_t *);
607 void uvm_lwp_setuarea(lwp_t *, vaddr_t);
608 int uvm_vslock(struct vmspace *, void *, size_t, vm_prot_t);
609 void uvm_vsunlock(struct vmspace *, void *, size_t);
610 void uvm_cpu_attach(struct cpu_info *);
611
612
613 /* uvm_init.c */
614 void uvm_init(void);
615
616 /* uvm_io.c */
617 int uvm_io(struct vm_map *, struct uio *);
618
619 /* uvm_km.c */
620 vaddr_t uvm_km_alloc(struct vm_map *, vsize_t, vsize_t,
621 uvm_flag_t);
622 void uvm_km_free(struct vm_map *, vaddr_t, vsize_t,
623 uvm_flag_t);
624
625 struct vm_map *uvm_km_suballoc(struct vm_map *, vaddr_t *,
626 vaddr_t *, vsize_t, int, bool,
627 struct vm_map *);
628 #ifdef _KERNEL
629 int uvm_km_kmem_alloc(vmem_t *, vmem_size_t, vm_flag_t,
630 vmem_addr_t *);
631 void uvm_km_kmem_free(vmem_t *, vmem_addr_t, vmem_size_t);
632 bool uvm_km_va_starved_p(void);
633 #endif
634
635 /* uvm_map.c */
636 int uvm_map(struct vm_map *, vaddr_t *, vsize_t,
637 struct uvm_object *, voff_t, vsize_t,
638 uvm_flag_t);
639 int uvm_map_pageable(struct vm_map *, vaddr_t,
640 vaddr_t, bool, int);
641 int uvm_map_pageable_all(struct vm_map *, int, vsize_t);
642 bool uvm_map_checkprot(struct vm_map *, vaddr_t,
643 vaddr_t, vm_prot_t);
644 int uvm_map_protect(struct vm_map *, vaddr_t,
645 vaddr_t, vm_prot_t, bool);
646 struct vmspace *uvmspace_alloc(vaddr_t, vaddr_t, bool);
647 void uvmspace_init(struct vmspace *, struct pmap *,
648 vaddr_t, vaddr_t, bool);
649 void uvmspace_exec(struct lwp *, vaddr_t, vaddr_t, bool);
650 void uvmspace_spawn(struct lwp *, vaddr_t, vaddr_t, bool);
651 struct vmspace *uvmspace_fork(struct vmspace *);
652 void uvmspace_addref(struct vmspace *);
653 void uvmspace_free(struct vmspace *);
654 void uvmspace_share(struct proc *, struct proc *);
655 void uvmspace_unshare(struct lwp *);
656
657 void uvm_whatis(uintptr_t, void (*)(const char *, ...));
658
659 /* uvm_meter.c */
660 int uvm_sysctl(int *, u_int, void *, size_t *,
661 void *, size_t, struct proc *);
662 int uvm_pctparam_check(struct uvm_pctparam *, int);
663 void uvm_pctparam_set(struct uvm_pctparam *, int);
664 int uvm_pctparam_get(struct uvm_pctparam *);
665 void uvm_pctparam_init(struct uvm_pctparam *, int,
666 int (*)(struct uvm_pctparam *, int));
667 int uvm_pctparam_createsysctlnode(struct uvm_pctparam *,
668 const char *, const char *);
669
670 /* uvm_mmap.c */
671 int uvm_mmap(struct vm_map *, vaddr_t *, vsize_t,
672 vm_prot_t, vm_prot_t, int,
673 void *, voff_t, vsize_t);
674 vaddr_t uvm_default_mapaddr(struct proc *, vaddr_t, vsize_t);
675
676 /* uvm_mremap.c */
677 int uvm_mremap(struct vm_map *, vaddr_t, vsize_t,
678 struct vm_map *, vaddr_t *, vsize_t,
679 struct proc *, int);
680
681 /* uvm_object.c */
682 void uvm_obj_init(struct uvm_object *,
683 const struct uvm_pagerops *, bool, u_int);
684 void uvm_obj_setlock(struct uvm_object *, kmutex_t *);
685 void uvm_obj_destroy(struct uvm_object *, bool);
686 int uvm_obj_wirepages(struct uvm_object *, off_t, off_t,
687 struct pglist *);
688 void uvm_obj_unwirepages(struct uvm_object *, off_t, off_t);
689
690 /* uvm_page.c */
691 struct vm_page *uvm_pagealloc_strat(struct uvm_object *,
692 voff_t, struct vm_anon *, int, int, int);
693 #define uvm_pagealloc(obj, off, anon, flags) \
694 uvm_pagealloc_strat((obj), (off), (anon), (flags), \
695 UVM_PGA_STRAT_NORMAL, 0)
696 void uvm_pagereplace(struct vm_page *,
697 struct vm_page *);
698 void uvm_pagerealloc(struct vm_page *,
699 struct uvm_object *, voff_t);
700 /* Actually, uvm_page_physload takes PF#s which need their own type */
701 void uvm_page_physload(paddr_t, paddr_t, paddr_t,
702 paddr_t, int);
703 void uvm_setpagesize(void);
704
705 /* uvm_pager.c */
706 void uvm_aio_biodone(struct buf *);
707 void uvm_aio_aiodone(struct buf *);
708 void uvm_aio_aiodone_pages(struct vm_page **, int, bool,
709 int);
710
711 /* uvm_pdaemon.c */
712 void uvm_pageout(void *);
713 struct work;
714 void uvm_aiodone_worker(struct work *, void *);
715 void uvm_pageout_start(int);
716 void uvm_pageout_done(int);
717 void uvm_estimatepageable(int *, int *);
718
719 /* uvm_pglist.c */
720 int uvm_pglistalloc(psize_t, paddr_t, paddr_t,
721 paddr_t, paddr_t, struct pglist *, int, int);
722 void uvm_pglistfree(struct pglist *);
723
724 /* uvm_swap.c */
725 void uvm_swap_init(void);
726
727 /* uvm_unix.c */
728 int uvm_grow(struct proc *, vaddr_t);
729
730 /* uvm_user.c */
731 void uvm_deallocate(struct vm_map *, vaddr_t, vsize_t);
732
733 /* uvm_vnode.c */
734 void uvm_vnp_setsize(struct vnode *, voff_t);
735 void uvm_vnp_setwritesize(struct vnode *, voff_t);
736 int uvn_findpages(struct uvm_object *, voff_t,
737 int *, struct vm_page **, int);
738 bool uvn_text_p(struct uvm_object *);
739 bool uvn_clean_p(struct uvm_object *);
740 bool uvn_needs_writefault_p(struct uvm_object *);
741
742 /* kern_malloc.c */
743 void kmeminit_nkmempages(void);
744 void kmeminit(void);
745 extern int nkmempages;
746
747 #endif /* _KERNEL */
748
749 #endif /* _UVM_UVM_EXTERN_H_ */
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