FreeBSD/Linux Kernel Cross Reference
sys/uvm/uvm_extern.h
1 /* $NetBSD: uvm_extern.h,v 1.98.8.1 2005/09/18 20:09:50 tron 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. Neither the name of the University nor the names of its contributors
50 * may be used to endorse or promote products derived from this software
51 * without specific prior written permission.
52 *
53 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
54 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
55 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
56 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
57 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
58 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
59 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
60 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
61 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
62 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
63 * SUCH DAMAGE.
64 *
65 * @(#)vm_extern.h 8.5 (Berkeley) 5/3/95
66 */
67
68 #ifndef _UVM_UVM_EXTERN_H_
69 #define _UVM_UVM_EXTERN_H_
70
71 /*
72 * uvm_extern.h: this file defines the external interface to the VM system.
73 *
74 * this should be the only file included by non-VM parts of the kernel
75 * which need access to VM services. if you want to know the interface
76 * to the MI VM layer without knowing the details, this is the file to
77 * learn.
78 *
79 * NOTE: vm system calls are prototyped in syscallargs.h
80 */
81
82 /*
83 * typedefs, necessary for standard UVM headers.
84 */
85
86 typedef unsigned int uvm_flag_t;
87 typedef int vm_fault_t;
88
89 typedef int vm_inherit_t; /* XXX: inheritance codes */
90 typedef off_t voff_t; /* XXX: offset within a uvm_object */
91
92 /*
93 * defines
94 */
95
96 /*
97 * the following defines are for uvm_map and functions which call it.
98 */
99
100 /* protections bits */
101 #define UVM_PROT_MASK 0x07 /* protection mask */
102 #define UVM_PROT_NONE 0x00 /* protection none */
103 #define UVM_PROT_ALL 0x07 /* everything */
104 #define UVM_PROT_READ 0x01 /* read */
105 #define UVM_PROT_WRITE 0x02 /* write */
106 #define UVM_PROT_EXEC 0x04 /* exec */
107
108 /* protection short codes */
109 #define UVM_PROT_R 0x01 /* read */
110 #define UVM_PROT_W 0x02 /* write */
111 #define UVM_PROT_RW 0x03 /* read-write */
112 #define UVM_PROT_X 0x04 /* exec */
113 #define UVM_PROT_RX 0x05 /* read-exec */
114 #define UVM_PROT_WX 0x06 /* write-exec */
115 #define UVM_PROT_RWX 0x07 /* read-write-exec */
116
117 /* 0x08: not used */
118
119 /* inherit codes */
120 #define UVM_INH_MASK 0x30 /* inherit mask */
121 #define UVM_INH_SHARE 0x00 /* "share" */
122 #define UVM_INH_COPY 0x10 /* "copy" */
123 #define UVM_INH_NONE 0x20 /* "none" */
124 #define UVM_INH_DONATE 0x30 /* "donate" << not used */
125
126 /* 0x40, 0x80: not used */
127
128 /* bits 0x700: max protection, 0x800: not used */
129
130 /* bits 0x7000: advice, 0x8000: not used */
131 /* advice: matches MADV_* from sys/mman.h */
132 #define UVM_ADV_NORMAL 0x0 /* 'normal' */
133 #define UVM_ADV_RANDOM 0x1 /* 'random' */
134 #define UVM_ADV_SEQUENTIAL 0x2 /* 'sequential' */
135 /* 0x3: will need, 0x4: dontneed */
136 #define UVM_ADV_MASK 0x7 /* mask */
137
138 /* bits 0xffff0000: mapping flags */
139 #define UVM_FLAG_FIXED 0x010000 /* find space */
140 #define UVM_FLAG_OVERLAY 0x020000 /* establish overlay */
141 #define UVM_FLAG_NOMERGE 0x040000 /* don't merge map entries */
142 #define UVM_FLAG_COPYONW 0x080000 /* set copy_on_write flag */
143 #define UVM_FLAG_AMAPPAD 0x100000 /* for bss: pad amap to reduce malloc() */
144 #define UVM_FLAG_TRYLOCK 0x200000 /* fail if we can not lock map */
145 #define UVM_FLAG_NOWAIT 0x400000 /* not allowed to sleep */
146 #define UVM_FLAG_QUANTUM 0x800000 /* entry never be splitted later */
147 #define UVM_FLAG_WAITVA 0x1000000 /* wait for va */
148
149 /* macros to extract info */
150 #define UVM_PROTECTION(X) ((X) & UVM_PROT_MASK)
151 #define UVM_INHERIT(X) (((X) & UVM_INH_MASK) >> 4)
152 #define UVM_MAXPROTECTION(X) (((X) >> 8) & UVM_PROT_MASK)
153 #define UVM_ADVICE(X) (((X) >> 12) & UVM_ADV_MASK)
154
155 #define UVM_MAPFLAG(PROT,MAXPROT,INH,ADVICE,FLAGS) \
156 ((MAXPROT << 8)|(PROT)|(INH)|((ADVICE) << 12)|(FLAGS))
157
158 /* magic offset value: offset not known(obj) or don't care(!obj) */
159 #define UVM_UNKNOWN_OFFSET ((voff_t) -1)
160
161 /*
162 * the following defines are for uvm_km_kmemalloc's flags
163 */
164 #define UVM_KMF_VALLOC 0x1 /* allocate VA only */
165 #define UVM_KMF_CANFAIL 0x2 /* caller handles failure */
166 #define UVM_KMF_TRYLOCK UVM_FLAG_TRYLOCK /* try locking only */
167 #define UVM_KMF_NOWAIT UVM_FLAG_NOWAIT /* not allowed to sleep */
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 * flags for ubc_alloc()
184 */
185 #define UBC_READ 0x01
186 #define UBC_WRITE 0x02
187 #define UBC_FAULTBUSY 0x04
188
189 /*
190 * flags for ubc_release()
191 */
192 #define UBC_UNMAP 0x01
193
194 /*
195 * helpers for calling ubc_release()
196 */
197 #ifdef PMAP_CACHE_VIVT
198 #define UBC_WANT_UNMAP(vp) (((vp)->v_flag & VTEXT) != 0)
199 #else
200 #define UBC_WANT_UNMAP(vp) FALSE
201 #endif
202
203 /*
204 * flags for uvn_findpages().
205 */
206 #define UFP_ALL 0x00
207 #define UFP_NOWAIT 0x01
208 #define UFP_NOALLOC 0x02
209 #define UFP_NOCACHE 0x04
210 #define UFP_NORDONLY 0x08
211 #define UFP_DIRTYONLY 0x10
212 #define UFP_BACKWARD 0x20
213
214 /*
215 * lockflags that control the locking behavior of various functions.
216 */
217 #define UVM_LK_ENTER 0x00000001 /* map locked on entry */
218 #define UVM_LK_EXIT 0x00000002 /* leave map locked on exit */
219
220 /*
221 * structures
222 */
223
224 struct buf;
225 struct core;
226 struct loadavg;
227 struct mount;
228 struct pglist;
229 struct proc;
230 struct ucred;
231 struct uio;
232 struct uvm_object;
233 struct vm_anon;
234 struct vmspace;
235 struct pmap;
236 struct vnode;
237 struct pool;
238 struct simplelock;
239 struct vm_map_entry;
240 struct vm_map;
241 struct vm_page;
242 struct vmspace;
243 struct vmtotal;
244
245 /*
246 * uvmexp: global data structures that are exported to parts of the kernel
247 * other than the vm system.
248 */
249
250 struct uvmexp {
251 /* vm_page constants */
252 int pagesize; /* size of a page (PAGE_SIZE): must be power of 2 */
253 int pagemask; /* page mask */
254 int pageshift; /* page shift */
255
256 /* vm_page counters */
257 int npages; /* number of pages we manage */
258 int free; /* number of free pages */
259 int active; /* number of active pages */
260 int inactive; /* number of pages that we free'd but may want back */
261 int paging; /* number of pages in the process of being paged out */
262 int wired; /* number of wired pages */
263
264 /*
265 * Adding anything before this line will break binary compatibility
266 * with top(1) on NetBSD 1.5.
267 */
268
269 int ncolors; /* number of page color buckets: must be p-o-2 */
270 int colormask; /* color bucket mask */
271
272 int zeropages; /* number of zero'd pages */
273 int reserve_pagedaemon; /* number of pages reserved for pagedaemon */
274 int reserve_kernel; /* number of pages reserved for kernel */
275 int anonpages; /* number of pages used by anon mappings */
276 int filepages; /* number of pages used by cached file data */
277 int execpages; /* number of pages used by cached exec data */
278
279 /* pageout params */
280 int freemin; /* min number of free pages */
281 int freetarg; /* target number of free pages */
282 int inactarg; /* target number of inactive pages */
283 int wiredmax; /* max number of wired pages */
284 int anonmin; /* min threshold for anon pages */
285 int execmin; /* min threshold for executable pages */
286 int filemin; /* min threshold for file pages */
287 int anonminpct; /* min percent anon pages */
288 int execminpct; /* min percent executable pages */
289 int fileminpct; /* min percent file pages */
290 int anonmax; /* max threshold for anon pages */
291 int execmax; /* max threshold for executable pages */
292 int filemax; /* max threshold for file pages */
293 int anonmaxpct; /* max percent anon pages */
294 int execmaxpct; /* max percent executable pages */
295 int filemaxpct; /* max percent file pages */
296
297 /* swap */
298 int nswapdev; /* number of configured swap devices in system */
299 int swpages; /* number of PAGE_SIZE'ed swap pages */
300 int swpgavail; /* number of swap pages currently available */
301 int swpginuse; /* number of swap pages in use */
302 int swpgonly; /* number of swap pages in use, not also in RAM */
303 int nswget; /* number of times fault calls uvm_swap_get() */
304 int nanon; /* number total of anon's in system */
305 int nanonneeded;/* number of anons currently needed */
306 int nfreeanon; /* number of free anon's */
307
308 /* stat counters */
309 int faults; /* page fault count */
310 int traps; /* trap count */
311 int intrs; /* interrupt count */
312 int swtch; /* context switch count */
313 int softs; /* software interrupt count */
314 int syscalls; /* system calls */
315 int pageins; /* pagein operation count */
316 /* pageouts are in pdpageouts below */
317 int swapins; /* swapins */
318 int swapouts; /* swapouts */
319 int pgswapin; /* pages swapped in */
320 int pgswapout; /* pages swapped out */
321 int forks; /* forks */
322 int forks_ppwait; /* forks where parent waits */
323 int forks_sharevm; /* forks where vmspace is shared */
324 int pga_zerohit; /* pagealloc where zero wanted and zero
325 was available */
326 int pga_zeromiss; /* pagealloc where zero wanted and zero
327 not available */
328 int zeroaborts; /* number of times page zeroing was
329 aborted */
330 int colorhit; /* pagealloc where we got optimal color */
331 int colormiss; /* pagealloc where we didn't */
332
333 /* fault subcounters */
334 int fltnoram; /* number of times fault was out of ram */
335 int fltnoanon; /* number of times fault was out of anons */
336 int fltpgwait; /* number of times fault had to wait on a page */
337 int fltpgrele; /* number of times fault found a released page */
338 int fltrelck; /* number of times fault relock called */
339 int fltrelckok; /* number of times fault relock is a success */
340 int fltanget; /* number of times fault gets anon page */
341 int fltanretry; /* number of times fault retrys an anon get */
342 int fltamcopy; /* number of times fault clears "needs copy" */
343 int fltnamap; /* number of times fault maps a neighbor anon page */
344 int fltnomap; /* number of times fault maps a neighbor obj page */
345 int fltlget; /* number of times fault does a locked pgo_get */
346 int fltget; /* number of times fault does an unlocked get */
347 int flt_anon; /* number of times fault anon (case 1a) */
348 int flt_acow; /* number of times fault anon cow (case 1b) */
349 int flt_obj; /* number of times fault is on object page (2a) */
350 int flt_prcopy; /* number of times fault promotes with copy (2b) */
351 int flt_przero; /* number of times fault promotes with zerofill (2b) */
352
353 /* daemon counters */
354 int pdwoke; /* number of times daemon woke up */
355 int pdrevs; /* number of times daemon rev'd clock hand */
356 int pdswout; /* number of times daemon called for swapout */
357 int pdfreed; /* number of pages daemon freed since boot */
358 int pdscans; /* number of pages daemon scanned since boot */
359 int pdanscan; /* number of anonymous pages scanned by daemon */
360 int pdobscan; /* number of object pages scanned by daemon */
361 int pdreact; /* number of pages daemon reactivated since boot */
362 int pdbusy; /* number of times daemon found a busy page */
363 int pdpageouts; /* number of times daemon started a pageout */
364 int pdpending; /* number of times daemon got a pending pagout */
365 int pddeact; /* number of pages daemon deactivates */
366 int pdreanon; /* anon pages reactivated due to thresholds */
367 int pdrefile; /* file pages reactivated due to thresholds */
368 int pdreexec; /* executable pages reactivated due to thresholds */
369 };
370
371 /*
372 * The following structure is 64-bit alignment safe. New elements
373 * should only be added to the end of this structure so binary
374 * compatibility can be preserved.
375 */
376 struct uvmexp_sysctl {
377 int64_t pagesize;
378 int64_t pagemask;
379 int64_t pageshift;
380 int64_t npages;
381 int64_t free;
382 int64_t active;
383 int64_t inactive;
384 int64_t paging;
385 int64_t wired;
386 int64_t zeropages;
387 int64_t reserve_pagedaemon;
388 int64_t reserve_kernel;
389 int64_t freemin;
390 int64_t freetarg;
391 int64_t inactarg;
392 int64_t wiredmax;
393 int64_t nswapdev;
394 int64_t swpages;
395 int64_t swpginuse;
396 int64_t swpgonly;
397 int64_t nswget;
398 int64_t nanon;
399 int64_t nanonneeded;
400 int64_t nfreeanon;
401 int64_t faults;
402 int64_t traps;
403 int64_t intrs;
404 int64_t swtch;
405 int64_t softs;
406 int64_t syscalls;
407 int64_t pageins;
408 int64_t swapins;
409 int64_t swapouts;
410 int64_t pgswapin;
411 int64_t pgswapout;
412 int64_t forks;
413 int64_t forks_ppwait;
414 int64_t forks_sharevm;
415 int64_t pga_zerohit;
416 int64_t pga_zeromiss;
417 int64_t zeroaborts;
418 int64_t fltnoram;
419 int64_t fltnoanon;
420 int64_t fltpgwait;
421 int64_t fltpgrele;
422 int64_t fltrelck;
423 int64_t fltrelckok;
424 int64_t fltanget;
425 int64_t fltanretry;
426 int64_t fltamcopy;
427 int64_t fltnamap;
428 int64_t fltnomap;
429 int64_t fltlget;
430 int64_t fltget;
431 int64_t flt_anon;
432 int64_t flt_acow;
433 int64_t flt_obj;
434 int64_t flt_prcopy;
435 int64_t flt_przero;
436 int64_t pdwoke;
437 int64_t pdrevs;
438 int64_t pdswout;
439 int64_t pdfreed;
440 int64_t pdscans;
441 int64_t pdanscan;
442 int64_t pdobscan;
443 int64_t pdreact;
444 int64_t pdbusy;
445 int64_t pdpageouts;
446 int64_t pdpending;
447 int64_t pddeact;
448 int64_t anonpages;
449 int64_t filepages;
450 int64_t execpages;
451 int64_t colorhit;
452 int64_t colormiss;
453 int64_t ncolors;
454 };
455
456 #ifdef _KERNEL
457 /* we need this before including uvm_page.h on some platforms */
458 extern struct uvmexp uvmexp;
459 #endif
460
461 /*
462 * Finally, bring in standard UVM headers.
463 */
464 #include <sys/vmmeter.h>
465 #include <sys/queue.h>
466 #include <uvm/uvm_param.h>
467 #include <sys/lock.h>
468 #include <uvm/uvm_prot.h>
469 #include <uvm/uvm_page.h>
470 #include <uvm/uvm_pmap.h>
471 #include <uvm/uvm_map.h>
472 #include <uvm/uvm_fault.h>
473 #include <uvm/uvm_pager.h>
474
475 /*
476 * Shareable process virtual address space.
477 * May eventually be merged with vm_map.
478 * Several fields are temporary (text, data stuff).
479 */
480 struct vmspace {
481 struct vm_map vm_map; /* VM address map */
482 int vm_refcnt; /* number of references *
483 * note: protected by vm_map.ref_lock */
484 caddr_t vm_shm; /* SYS5 shared memory private data XXX */
485 /* we copy from vm_startcopy to the end of the structure on fork */
486 #define vm_startcopy vm_rssize
487 segsz_t vm_rssize; /* current resident set size in pages */
488 segsz_t vm_swrss; /* resident set size before last swap */
489 segsz_t vm_tsize; /* text size (pages) XXX */
490 segsz_t vm_dsize; /* data size (pages) XXX */
491 segsz_t vm_ssize; /* stack size (pages) */
492 caddr_t vm_taddr; /* user virtual address of text XXX */
493 caddr_t vm_daddr; /* user virtual address of data XXX */
494 caddr_t vm_maxsaddr; /* user VA at max stack growth */
495 caddr_t vm_minsaddr; /* user VA at top of stack */
496 };
497
498 #ifdef _KERNEL
499
500 extern struct pool *uvm_aiobuf_pool;
501
502 /*
503 * used to keep state while iterating over the map for a core dump.
504 */
505 struct uvm_coredump_state {
506 void *cookie; /* opaque for the caller */
507 vaddr_t start; /* start of region */
508 vaddr_t end; /* end of region */
509 vm_prot_t prot; /* protection of region */
510 int flags; /* flags; see below */
511 };
512
513 #define UVM_COREDUMP_STACK 0x01 /* region is user stack */
514 #define UVM_COREDUMP_NODUMP 0x02 /* don't actually dump this region */
515
516 /*
517 * the various kernel maps, owned by MD code
518 */
519 extern struct vm_map *exec_map;
520 extern struct vm_map *kernel_map;
521 extern struct vm_map *kmem_map;
522 extern struct vm_map *mb_map;
523 extern struct vm_map *phys_map;
524
525 /*
526 * macros
527 */
528
529 /* zalloc zeros memory, alloc does not */
530 #define uvm_km_zalloc(MAP,SIZE) uvm_km_alloc1(MAP,SIZE,TRUE)
531 #define uvm_km_alloc(MAP,SIZE) uvm_km_alloc1(MAP,SIZE,FALSE)
532
533 #define vm_resident_count(vm) (pmap_resident_count((vm)->vm_map.pmap))
534
535 #include <sys/mallocvar.h>
536 MALLOC_DECLARE(M_VMMAP);
537 MALLOC_DECLARE(M_VMPMAP);
538
539 /* vm_machdep.c */
540 void vmapbuf(struct buf *, vsize_t);
541 void vunmapbuf(struct buf *, vsize_t);
542 #ifndef cpu_swapin
543 void cpu_swapin(struct lwp *);
544 #endif
545 #ifndef cpu_swapout
546 void cpu_swapout(struct lwp *);
547 #endif
548
549 /* uvm_aobj.c */
550 struct uvm_object *uao_create(vsize_t, int);
551 void uao_detach(struct uvm_object *);
552 void uao_detach_locked(struct uvm_object *);
553 void uao_reference(struct uvm_object *);
554 void uao_reference_locked(struct uvm_object *);
555
556 /* uvm_bio.c */
557 void ubc_init(void);
558 void * ubc_alloc(struct uvm_object *, voff_t, vsize_t *, int);
559 void ubc_release(void *, int);
560 void ubc_flush(struct uvm_object *, voff_t, voff_t);
561
562 /* uvm_fault.c */
563 int uvm_fault(struct vm_map *, vaddr_t, vm_fault_t,
564 vm_prot_t);
565 /* handle a page fault */
566
567 /* uvm_glue.c */
568 #if defined(KGDB)
569 void uvm_chgkprot(caddr_t, size_t, int);
570 #endif
571 void uvm_proc_fork(struct proc *, struct proc *, boolean_t);
572 void uvm_lwp_fork(struct lwp *, struct lwp *,
573 void *, size_t, void (*)(void *), void *);
574 int uvm_coredump_walkmap(struct proc *,
575 struct vnode *, struct ucred *,
576 int (*)(struct proc *, struct vnode *,
577 struct ucred *,
578 struct uvm_coredump_state *), void *);
579 void uvm_proc_exit(struct proc *);
580 void uvm_lwp_exit(struct lwp *);
581 void uvm_init_limits(struct proc *);
582 boolean_t uvm_kernacc(caddr_t, size_t, int);
583 __dead void uvm_scheduler(void) __attribute__((noreturn));
584 void uvm_swapin(struct lwp *);
585 boolean_t uvm_uarea_alloc(vaddr_t *);
586 void uvm_uarea_drain(boolean_t);
587 int uvm_vslock(struct proc *, caddr_t, size_t, vm_prot_t);
588 void uvm_vsunlock(struct proc *, caddr_t, size_t);
589
590
591 /* uvm_init.c */
592 void uvm_init(void);
593
594 /* uvm_io.c */
595 int uvm_io(struct vm_map *, struct uio *);
596
597 /* uvm_km.c */
598 vaddr_t uvm_km_alloc1(struct vm_map *, vsize_t, boolean_t);
599 void uvm_km_free(struct vm_map *, vaddr_t, vsize_t);
600 #define uvm_km_free_wakeup(map, start, size) uvm_km_free((map), (start), (size))
601 vaddr_t uvm_km_kmemalloc1(struct vm_map *, struct
602 uvm_object *, vsize_t, vsize_t, voff_t, int);
603 vaddr_t uvm_km_kmemalloc(struct vm_map *, struct
604 uvm_object *, vsize_t, int);
605 struct vm_map *uvm_km_suballoc(struct vm_map *, vaddr_t *,
606 vaddr_t *, vsize_t, int, boolean_t,
607 struct vm_map_kernel *);
608 vaddr_t uvm_km_valloc1(struct vm_map *, vsize_t,
609 vsize_t, voff_t, uvm_flag_t);
610 vaddr_t uvm_km_valloc(struct vm_map *, vsize_t);
611 vaddr_t uvm_km_valloc_align(struct vm_map *, vsize_t,
612 vsize_t);
613 vaddr_t uvm_km_valloc_wait(struct vm_map *, vsize_t);
614 vaddr_t uvm_km_valloc_prefer_wait(struct vm_map *, vsize_t,
615 voff_t);
616 vaddr_t uvm_km_alloc_poolpage1(struct vm_map *,
617 struct uvm_object *, boolean_t);
618 void uvm_km_free_poolpage1(struct vm_map *, vaddr_t);
619 vaddr_t uvm_km_alloc_poolpage_cache(struct vm_map *,
620 struct uvm_object *, boolean_t);
621 void uvm_km_free_poolpage_cache(struct vm_map *, vaddr_t);
622 void uvm_km_vacache_init(struct vm_map *,
623 const char *, size_t);
624
625 extern __inline__ vaddr_t
626 uvm_km_kmemalloc(struct vm_map *map, struct uvm_object *obj, vsize_t sz, int flags)
627 {
628 return uvm_km_kmemalloc1(map, obj, sz, 0, UVM_UNKNOWN_OFFSET, flags);
629 }
630
631 extern __inline__ vaddr_t
632 uvm_km_valloc(struct vm_map *map, vsize_t sz)
633 {
634 return uvm_km_valloc1(map, sz, 0, UVM_UNKNOWN_OFFSET, UVM_KMF_NOWAIT);
635 }
636
637 extern __inline__ vaddr_t
638 uvm_km_valloc_align(struct vm_map *map, vsize_t sz, vsize_t align)
639 {
640 return uvm_km_valloc1(map, sz, align, UVM_UNKNOWN_OFFSET, UVM_KMF_NOWAIT);
641 }
642
643 extern __inline__ vaddr_t
644 uvm_km_valloc_prefer_wait(struct vm_map *map, vsize_t sz, voff_t prefer)
645 {
646 return uvm_km_valloc1(map, sz, 0, prefer, 0);
647 }
648
649 extern __inline__ vaddr_t
650 uvm_km_valloc_wait(struct vm_map *map, vsize_t sz)
651 {
652 return uvm_km_valloc1(map, sz, 0, UVM_UNKNOWN_OFFSET, 0);
653 }
654
655 #define uvm_km_alloc_poolpage(waitok) \
656 uvm_km_alloc_poolpage1(kmem_map, NULL, (waitok))
657 #define uvm_km_free_poolpage(addr) \
658 uvm_km_free_poolpage1(kmem_map, (addr))
659
660 /* uvm_map.c */
661 int uvm_map(struct vm_map *, vaddr_t *, vsize_t,
662 struct uvm_object *, voff_t, vsize_t,
663 uvm_flag_t);
664 int uvm_map_pageable(struct vm_map *, vaddr_t,
665 vaddr_t, boolean_t, int);
666 int uvm_map_pageable_all(struct vm_map *, int, vsize_t);
667 boolean_t uvm_map_checkprot(struct vm_map *, vaddr_t,
668 vaddr_t, vm_prot_t);
669 int uvm_map_protect(struct vm_map *, vaddr_t,
670 vaddr_t, vm_prot_t, boolean_t);
671 struct vmspace *uvmspace_alloc(vaddr_t, vaddr_t);
672 void uvmspace_init(struct vmspace *, struct pmap *,
673 vaddr_t, vaddr_t);
674 void uvmspace_exec(struct lwp *, vaddr_t, vaddr_t);
675 struct vmspace *uvmspace_fork(struct vmspace *);
676 void uvmspace_free(struct vmspace *);
677 void uvmspace_share(struct proc *, struct proc *);
678 void uvmspace_unshare(struct lwp *);
679
680
681 /* uvm_meter.c */
682 void uvm_meter(void);
683 int uvm_sysctl(int *, u_int, void *, size_t *,
684 void *, size_t, struct proc *);
685
686 /* uvm_mmap.c */
687 int uvm_mmap(struct vm_map *, vaddr_t *, vsize_t,
688 vm_prot_t, vm_prot_t, int,
689 void *, voff_t, vsize_t);
690 vaddr_t uvm_default_mapaddr(struct proc *, vaddr_t, vsize_t);
691
692 /* uvm_page.c */
693 struct vm_page *uvm_pagealloc_strat(struct uvm_object *,
694 voff_t, struct vm_anon *, int, int, int);
695 #define uvm_pagealloc(obj, off, anon, flags) \
696 uvm_pagealloc_strat((obj), (off), (anon), (flags), \
697 UVM_PGA_STRAT_NORMAL, 0)
698 void uvm_pagereplace(struct vm_page *,
699 struct vm_page *);
700 void uvm_pagerealloc(struct vm_page *,
701 struct uvm_object *, voff_t);
702 /* Actually, uvm_page_physload takes PF#s which need their own type */
703 void uvm_page_physload(paddr_t, paddr_t, paddr_t,
704 paddr_t, int);
705 void uvm_setpagesize(void);
706
707 /* uvm_pager.c */
708 void uvm_aio_biodone1(struct buf *);
709 void uvm_aio_biodone(struct buf *);
710 void uvm_aio_aiodone(struct buf *);
711
712 /* uvm_pdaemon.c */
713 void uvm_pageout(void *);
714 void uvm_aiodone_daemon(void *);
715
716 /* uvm_pglist.c */
717 int uvm_pglistalloc(psize_t, paddr_t, paddr_t,
718 paddr_t, paddr_t, struct pglist *, int, int);
719 void uvm_pglistfree(struct pglist *);
720
721 /* uvm_swap.c */
722 void uvm_swap_init(void);
723
724 /* uvm_unix.c */
725 int uvm_grow(struct proc *, vaddr_t);
726
727 /* uvm_user.c */
728 void uvm_deallocate(struct vm_map *, vaddr_t, vsize_t);
729
730 /* uvm_vnode.c */
731 void uvm_vnp_setsize(struct vnode *, voff_t);
732 void uvm_vnp_sync(struct mount *);
733 struct uvm_object *uvn_attach(void *, vm_prot_t);
734 int uvn_findpages(struct uvm_object *, voff_t,
735 int *, struct vm_page **, int);
736 void uvm_vnp_zerorange(struct vnode *, off_t, size_t);
737
738 /* kern_malloc.c */
739 void kmeminit_nkmempages(void);
740 void kmeminit(void);
741 extern int nkmempages;
742
743 #endif /* _KERNEL */
744
745 #endif /* _UVM_UVM_EXTERN_H_ */
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