FreeBSD/Linux Kernel Cross Reference
sys/uvm/uvm_extern.h
1 /* $NetBSD: uvm_extern.h,v 1.148.4.2 2009/04/01 00:25:23 snj 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
88 typedef int vm_inherit_t; /* XXX: inheritance codes */
89 typedef off_t voff_t; /* XXX: offset within a uvm_object */
90 typedef voff_t pgoff_t; /* XXX: number of pages 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 and POSIX_FADV_* from sys/fcntl.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 can never be split later */
147 #define UVM_FLAG_WAITVA 0x1000000 /* wait for va */
148 #define UVM_FLAG_VAONLY 0x2000000 /* unmap: no pages are mapped */
149
150 /* macros to extract info */
151 #define UVM_PROTECTION(X) ((X) & UVM_PROT_MASK)
152 #define UVM_INHERIT(X) (((X) & UVM_INH_MASK) >> 4)
153 #define UVM_MAXPROTECTION(X) (((X) >> 8) & UVM_PROT_MASK)
154 #define UVM_ADVICE(X) (((X) >> 12) & UVM_ADV_MASK)
155
156 #define UVM_MAPFLAG(PROT,MAXPROT,INH,ADVICE,FLAGS) \
157 (((MAXPROT) << 8)|(PROT)|(INH)|((ADVICE) << 12)|(FLAGS))
158
159 /* magic offset value: offset not known(obj) or don't care(!obj) */
160 #define UVM_UNKNOWN_OFFSET ((voff_t) -1)
161
162 /*
163 * the following defines are for uvm_km_alloc/free's flags
164 */
165 #define UVM_KMF_WIRED 0x1 /* allocation type: wired */
166 #define UVM_KMF_PAGEABLE 0x2 /* allocation type: pageable */
167 #define UVM_KMF_VAONLY 0x4 /* allocation type: VA only */
168 #define UVM_KMF_TYPEMASK (UVM_KMF_VAONLY | UVM_KMF_PAGEABLE | UVM_KMF_WIRED)
169 #define UVM_KMF_CANFAIL 0x8 /* caller handles failure */
170 #define UVM_KMF_ZERO 0x10 /* want zero filled memory */
171 #define UVM_KMF_EXEC 0x20 /* need executable mapping */
172 #define UVM_KMF_TRYLOCK UVM_FLAG_TRYLOCK /* try locking only */
173 #define UVM_KMF_NOWAIT UVM_FLAG_NOWAIT /* not allowed to sleep */
174 #define UVM_KMF_WAITVA UVM_FLAG_WAITVA /* sleep for va */
175
176 /*
177 * the following defines the strategies for uvm_pagealloc_strat()
178 */
179 #define UVM_PGA_STRAT_NORMAL 0 /* high -> low free list walk */
180 #define UVM_PGA_STRAT_ONLY 1 /* only specified free list */
181 #define UVM_PGA_STRAT_FALLBACK 2 /* ONLY falls back on NORMAL */
182
183 /*
184 * flags for uvm_pagealloc_strat()
185 */
186 #define UVM_PGA_USERESERVE 0x0001 /* ok to use reserve pages */
187 #define UVM_PGA_ZERO 0x0002 /* returned page must be zero'd */
188
189 /*
190 * flags for ubc_alloc()
191 */
192 #define UBC_READ 0x001
193 #define UBC_WRITE 0x002
194 #define UBC_FAULTBUSY 0x004
195
196 /*
197 * flags for ubc_release()
198 */
199 #define UBC_UNMAP 0x010
200
201 /*
202 * flags for ubc_uiomve()
203 */
204 #define UBC_PARTIALOK 0x100
205
206 /*
207 * flags for uvn_findpages().
208 */
209 #define UFP_ALL 0x00
210 #define UFP_NOWAIT 0x01
211 #define UFP_NOALLOC 0x02
212 #define UFP_NOCACHE 0x04
213 #define UFP_NORDONLY 0x08
214 #define UFP_DIRTYONLY 0x10
215 #define UFP_BACKWARD 0x20
216
217 /*
218 * lockflags that control the locking behavior of various functions.
219 */
220 #define UVM_LK_ENTER 0x00000001 /* map locked on entry */
221 #define UVM_LK_EXIT 0x00000002 /* leave map locked on exit */
222
223 /*
224 * Default number of pages to allocate on the stack
225 */
226 #define UBC_MAX_PAGES 8
227
228 /*
229 * structures
230 */
231
232 struct buf;
233 struct core;
234 struct loadavg;
235 struct mount;
236 struct pglist;
237 struct proc;
238 struct uio;
239 struct uvm_object;
240 struct vm_anon;
241 struct vmspace;
242 struct pmap;
243 struct vnode;
244 struct pool;
245 struct simplelock;
246 struct vm_map_entry;
247 struct vm_map;
248 struct vm_page;
249 struct vmtotal;
250
251 /*
252 * uvm_pctparam: parameter to be shown as percentage to user.
253 */
254
255 #define UVM_PCTPARAM_SHIFT 8
256 #define UVM_PCTPARAM_SCALE (1 << UVM_PCTPARAM_SHIFT)
257 #define UVM_PCTPARAM_APPLY(pct, x) \
258 (((x) * (pct)->pct_scaled) >> UVM_PCTPARAM_SHIFT)
259 struct uvm_pctparam {
260 int pct_pct; /* percent [0, 100] */ /* should be the first member */
261 int pct_scaled;
262 int (*pct_check)(struct uvm_pctparam *, int);
263 };
264
265 /*
266 * uvmexp: global data structures that are exported to parts of the kernel
267 * other than the vm system.
268 */
269
270 struct uvmexp {
271 /* vm_page constants */
272 int pagesize; /* size of a page (PAGE_SIZE): must be power of 2 */
273 int pagemask; /* page mask */
274 int pageshift; /* page shift */
275
276 /* vm_page counters */
277 int npages; /* number of pages we manage */
278 int free; /* number of free pages */
279 int paging; /* number of pages in the process of being paged out */
280 int wired; /* number of wired pages */
281
282 /*
283 * Adding anything before this line will break binary compatibility
284 * with top(1) on NetBSD 1.5.
285 */
286
287 int ncolors; /* number of page color buckets: must be p-o-2 */
288 int colormask; /* color bucket mask */
289
290 int zeropages; /* number of zero'd pages */
291 int reserve_pagedaemon; /* number of pages reserved for pagedaemon */
292 int reserve_kernel; /* number of pages reserved for kernel */
293 unsigned anonpages; /* number of pages used by anon mappings */
294 unsigned filepages; /* number of pages used by cached file data */
295 unsigned execpages; /* number of pages used by cached exec data */
296
297 /* pageout params */
298 int freemin; /* min number of free pages */
299 int freetarg; /* target number of free pages */
300 int wiredmax; /* max number of wired pages */
301
302 /* swap */
303 int nswapdev; /* number of configured swap devices in system */
304 int swpages; /* number of PAGE_SIZE'ed swap pages */
305 int swpgavail; /* number of swap pages currently available */
306 int swpginuse; /* number of swap pages in use */
307 int swpgonly; /* number of swap pages in use, not also in RAM */
308 int nswget; /* number of times fault calls uvm_swap_get() */
309
310 /* stat counters. XXX: should be 64-bit counters */
311 int faults; /* page fault count */
312 int traps; /* trap count */
313 int intrs; /* interrupt count */
314 int swtch; /* context switch count */
315 int softs; /* software interrupt count */
316 int syscalls; /* system calls */
317 int pageins; /* pagein operation count */
318 /* pageouts are in pdpageouts below */
319 int swapins; /* swapins */
320 int swapouts; /* swapouts */
321 int pgswapin; /* pages swapped in */
322 int pgswapout; /* pages swapped out */
323 int forks; /* forks */
324 int forks_ppwait; /* forks where parent waits */
325 int forks_sharevm; /* forks where vmspace is shared */
326 int pga_zerohit; /* pagealloc where zero wanted and zero
327 was available */
328 int pga_zeromiss; /* pagealloc where zero wanted and zero
329 not available */
330 int zeroaborts; /* number of times page zeroing was
331 aborted */
332 int colorhit; /* pagealloc where we got optimal color */
333 int colormiss; /* pagealloc where we didn't */
334 int cpuhit; /* pagealloc where we allocated locally */
335 int cpumiss; /* pagealloc where we didn't */
336
337 /* fault subcounters. XXX: should be 64-bit counters */
338 int fltnoram; /* number of times fault was out of ram */
339 int fltnoanon; /* number of times fault was out of anons */
340 int fltpgwait; /* number of times fault had to wait on a page */
341 int fltpgrele; /* number of times fault found a released page */
342 int fltrelck; /* number of times fault relock called */
343 int fltrelckok; /* number of times fault relock is a success */
344 int fltanget; /* number of times fault gets anon page */
345 int fltanretry; /* number of times fault retrys an anon get */
346 int fltamcopy; /* number of times fault clears "needs copy" */
347 int fltnamap; /* number of times fault maps a neighbor anon page */
348 int fltnomap; /* number of times fault maps a neighbor obj page */
349 int fltlget; /* number of times fault does a locked pgo_get */
350 int fltget; /* number of times fault does an unlocked get */
351 int flt_anon; /* number of times fault anon (case 1a) */
352 int flt_acow; /* number of times fault anon cow (case 1b) */
353 int flt_obj; /* number of times fault is on object page (2a) */
354 int flt_prcopy; /* number of times fault promotes with copy (2b) */
355 int flt_przero; /* number of times fault promotes with zerofill (2b) */
356
357 /* daemon counters. XXX: should be 64-bit counters */
358 int pdwoke; /* number of times daemon woke up */
359 int pdrevs; /* number of times daemon rev'd clock hand */
360 int pdswout; /* number of times daemon called for swapout */
361 int pdfreed; /* number of pages daemon freed since boot */
362 int pdscans; /* number of pages daemon scanned since boot */
363 int pdanscan; /* number of anonymous pages scanned by daemon */
364 int pdobscan; /* number of object pages scanned by daemon */
365 int pdreact; /* number of pages daemon reactivated since boot */
366 int pdbusy; /* number of times daemon found a busy page */
367 int pdpageouts; /* number of times daemon started a pageout */
368 int pdpending; /* number of times daemon got a pending pagout */
369 int pddeact; /* number of pages daemon deactivates */
370 int pdreanon; /* anon pages reactivated due to thresholds */
371 int pdrefile; /* file pages reactivated due to thresholds */
372 int pdreexec; /* executable pages reactivated due to thresholds */
373 };
374
375 /*
376 * The following structure is 64-bit alignment safe. New elements
377 * should only be added to the end of this structure so binary
378 * compatibility can be preserved.
379 */
380 struct uvmexp_sysctl {
381 int64_t pagesize;
382 int64_t pagemask;
383 int64_t pageshift;
384 int64_t npages;
385 int64_t free;
386 int64_t active;
387 int64_t inactive;
388 int64_t paging;
389 int64_t wired;
390 int64_t zeropages;
391 int64_t reserve_pagedaemon;
392 int64_t reserve_kernel;
393 int64_t freemin;
394 int64_t freetarg;
395 int64_t inactarg; /* unused */
396 int64_t wiredmax;
397 int64_t nswapdev;
398 int64_t swpages;
399 int64_t swpginuse;
400 int64_t swpgonly;
401 int64_t nswget;
402 int64_t unused1; /* used to be nanon */
403 int64_t cpuhit;
404 int64_t cpumiss;
405 int64_t faults;
406 int64_t traps;
407 int64_t intrs;
408 int64_t swtch;
409 int64_t softs;
410 int64_t syscalls;
411 int64_t pageins;
412 int64_t swapins;
413 int64_t swapouts;
414 int64_t pgswapin;
415 int64_t pgswapout;
416 int64_t forks;
417 int64_t forks_ppwait;
418 int64_t forks_sharevm;
419 int64_t pga_zerohit;
420 int64_t pga_zeromiss;
421 int64_t zeroaborts;
422 int64_t fltnoram;
423 int64_t fltnoanon;
424 int64_t fltpgwait;
425 int64_t fltpgrele;
426 int64_t fltrelck;
427 int64_t fltrelckok;
428 int64_t fltanget;
429 int64_t fltanretry;
430 int64_t fltamcopy;
431 int64_t fltnamap;
432 int64_t fltnomap;
433 int64_t fltlget;
434 int64_t fltget;
435 int64_t flt_anon;
436 int64_t flt_acow;
437 int64_t flt_obj;
438 int64_t flt_prcopy;
439 int64_t flt_przero;
440 int64_t pdwoke;
441 int64_t pdrevs;
442 int64_t pdswout;
443 int64_t pdfreed;
444 int64_t pdscans;
445 int64_t pdanscan;
446 int64_t pdobscan;
447 int64_t pdreact;
448 int64_t pdbusy;
449 int64_t pdpageouts;
450 int64_t pdpending;
451 int64_t pddeact;
452 int64_t anonpages;
453 int64_t filepages;
454 int64_t execpages;
455 int64_t colorhit;
456 int64_t colormiss;
457 int64_t ncolors;
458 };
459
460 #ifdef _KERNEL
461 /* we need this before including uvm_page.h on some platforms */
462 extern struct uvmexp uvmexp;
463 #endif
464
465 /*
466 * Finally, bring in standard UVM headers.
467 */
468 #include <sys/vmmeter.h>
469 #include <sys/queue.h>
470 #include <sys/lock.h>
471 #include <uvm/uvm_param.h>
472 #include <uvm/uvm_prot.h>
473 #include <uvm/uvm_page.h>
474 #include <uvm/uvm_pmap.h>
475 #include <uvm/uvm_map.h>
476 #include <uvm/uvm_pager.h>
477
478 /*
479 * helpers for calling ubc_release()
480 */
481 #ifdef PMAP_CACHE_VIVT
482 #define UBC_WANT_UNMAP(vp) (((vp)->v_iflag & VI_TEXT) != 0)
483 #else
484 #define UBC_WANT_UNMAP(vp) false
485 #endif
486
487 /*
488 * Shareable process virtual address space.
489 * May eventually be merged with vm_map.
490 * Several fields are temporary (text, data stuff).
491 */
492 struct vmspace {
493 struct vm_map vm_map; /* VM address map */
494 int vm_refcnt; /* number of references *
495 * note: protected by vm_map.ref_lock */
496 void * vm_shm; /* SYS5 shared memory private data XXX */
497 /* we copy from vm_startcopy to the end of the structure on fork */
498 #define vm_startcopy vm_rssize
499 segsz_t vm_rssize; /* current resident set size in pages */
500 segsz_t vm_swrss; /* resident set size before last swap */
501 segsz_t vm_tsize; /* text size (pages) XXX */
502 segsz_t vm_dsize; /* data size (pages) XXX */
503 segsz_t vm_ssize; /* stack size (pages) */
504 segsz_t vm_issize; /* initial unmapped stack size (pages) */
505 void * vm_taddr; /* user virtual address of text XXX */
506 void * vm_daddr; /* user virtual address of data XXX */
507 void *vm_maxsaddr; /* user VA at max stack growth */
508 void *vm_minsaddr; /* user VA at top of stack */
509 size_t vm_aslr_delta_mmap; /* mmap() random delta for ASLR */
510 };
511 #define VMSPACE_IS_KERNEL_P(vm) VM_MAP_IS_KERNEL(&(vm)->vm_map)
512
513 #ifdef _KERNEL
514
515 extern struct pool *uvm_aiobuf_pool;
516
517 /*
518 * used to keep state while iterating over the map for a core dump.
519 */
520 struct 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 */
534 extern struct vm_map *kernel_map;
535 extern struct vm_map *kmem_map;
536 extern struct vm_map *mb_map;
537 extern struct vm_map *phys_map;
538
539 /*
540 * macros
541 */
542
543 #define vm_resident_count(vm) (pmap_resident_count((vm)->vm_map.pmap))
544
545 #include <sys/mallocvar.h>
546 MALLOC_DECLARE(M_VMMAP);
547 MALLOC_DECLARE(M_VMPMAP);
548
549 /* vm_machdep.c */
550 void vmapbuf(struct buf *, vsize_t);
551 void vunmapbuf(struct buf *, vsize_t);
552 #ifndef cpu_swapin
553 void cpu_swapin(struct lwp *);
554 #endif
555 #ifndef cpu_swapout
556 void cpu_swapout(struct lwp *);
557 #endif
558
559 /* uvm_aobj.c */
560 struct uvm_object *uao_create(vsize_t, int);
561 void uao_detach(struct uvm_object *);
562 void uao_detach_locked(struct uvm_object *);
563 void uao_reference(struct uvm_object *);
564 void uao_reference_locked(struct uvm_object *);
565
566 /* uvm_bio.c */
567 void ubc_init(void);
568 void * ubc_alloc(struct uvm_object *, voff_t, vsize_t *, int,
569 int);
570 void ubc_release(void *, int);
571 void ubc_flush(struct uvm_object *, voff_t, voff_t);
572 int ubc_uiomove(struct uvm_object *, struct uio *, vsize_t,
573 int, int);
574
575 /* uvm_fault.c */
576 #define uvm_fault(m, a, p) uvm_fault_internal(m, a, p, 0)
577 int uvm_fault_internal(struct vm_map *, vaddr_t, vm_prot_t, int);
578 /* handle a page fault */
579
580 /* uvm_glue.c */
581 #if defined(KGDB)
582 void uvm_chgkprot(void *, size_t, int);
583 #endif
584 void uvm_proc_fork(struct proc *, struct proc *, bool);
585 void uvm_lwp_fork(struct lwp *, struct lwp *,
586 void *, size_t, void (*)(void *), void *);
587 int uvm_coredump_walkmap(struct proc *,
588 void *,
589 int (*)(struct proc *, void *,
590 struct uvm_coredump_state *), void *);
591 void uvm_proc_exit(struct proc *);
592 void uvm_lwp_exit(struct lwp *);
593 void uvm_init_limits(struct proc *);
594 bool uvm_kernacc(void *, size_t, int);
595 __dead void uvm_scheduler(void);
596 void uvm_kick_scheduler(void);
597 void uvm_swapin(struct lwp *);
598 bool uvm_uarea_alloc(vaddr_t *);
599 void uvm_uarea_free(vaddr_t, struct cpu_info *);
600 int uvm_vslock(struct vmspace *, void *, size_t, vm_prot_t);
601 void uvm_vsunlock(struct vmspace *, void *, size_t);
602 void uvm_lwp_hold(struct lwp *);
603 void uvm_lwp_rele(struct lwp *);
604 void uvm_cpu_attach(struct cpu_info *);
605
606
607 /* uvm_init.c */
608 void uvm_init(void);
609
610 /* uvm_io.c */
611 int uvm_io(struct vm_map *, struct uio *);
612
613 /* uvm_km.c */
614 vaddr_t uvm_km_alloc(struct vm_map *, vsize_t, vsize_t,
615 uvm_flag_t);
616 void uvm_km_free(struct vm_map *, vaddr_t, vsize_t,
617 uvm_flag_t);
618
619 struct vm_map *uvm_km_suballoc(struct vm_map *, vaddr_t *,
620 vaddr_t *, vsize_t, int, bool,
621 struct vm_map_kernel *);
622 vaddr_t uvm_km_alloc_poolpage(struct vm_map *, bool);
623 void uvm_km_free_poolpage(struct vm_map *, vaddr_t);
624 vaddr_t uvm_km_alloc_poolpage_cache(struct vm_map *, bool);
625 void uvm_km_free_poolpage_cache(struct vm_map *, vaddr_t);
626 void uvm_km_vacache_init(struct vm_map *,
627 const char *, size_t);
628
629 /* uvm_map.c */
630 int uvm_map(struct vm_map *, vaddr_t *, vsize_t,
631 struct uvm_object *, voff_t, vsize_t,
632 uvm_flag_t);
633 int uvm_map_pageable(struct vm_map *, vaddr_t,
634 vaddr_t, bool, int);
635 int uvm_map_pageable_all(struct vm_map *, int, vsize_t);
636 bool uvm_map_checkprot(struct vm_map *, vaddr_t,
637 vaddr_t, vm_prot_t);
638 int uvm_map_protect(struct vm_map *, vaddr_t,
639 vaddr_t, vm_prot_t, bool);
640 struct vmspace *uvmspace_alloc(vaddr_t, vaddr_t);
641 void uvmspace_init(struct vmspace *, struct pmap *,
642 vaddr_t, vaddr_t);
643 void uvmspace_exec(struct lwp *, vaddr_t, vaddr_t);
644 struct vmspace *uvmspace_fork(struct vmspace *);
645 void uvmspace_addref(struct vmspace *);
646 void uvmspace_free(struct vmspace *);
647 void uvmspace_share(struct proc *, struct proc *);
648 void uvmspace_unshare(struct lwp *);
649
650 void uvm_whatis(uintptr_t, void (*)(const char *, ...));
651
652 /* uvm_meter.c */
653 void uvm_meter(void);
654 int uvm_sysctl(int *, u_int, void *, size_t *,
655 void *, size_t, struct proc *);
656 int uvm_pctparam_check(struct uvm_pctparam *, int);
657 void uvm_pctparam_set(struct uvm_pctparam *, int);
658 int uvm_pctparam_get(struct uvm_pctparam *);
659 void uvm_pctparam_init(struct uvm_pctparam *, int,
660 int (*)(struct uvm_pctparam *, int));
661 int uvm_pctparam_createsysctlnode(struct uvm_pctparam *,
662 const char *, const char *);
663
664 /* uvm_mmap.c */
665 int uvm_mmap(struct vm_map *, vaddr_t *, vsize_t,
666 vm_prot_t, vm_prot_t, int,
667 void *, voff_t, vsize_t);
668 vaddr_t uvm_default_mapaddr(struct proc *, vaddr_t, vsize_t);
669
670 /* uvm_mremap.c */
671 int uvm_mremap(struct vm_map *, vaddr_t, vsize_t,
672 struct vm_map *, vaddr_t *, vsize_t,
673 struct proc *, int);
674
675 /* uvm_object.c */
676 int uobj_wirepages(struct uvm_object *uobj, off_t start,
677 off_t end);
678 void uobj_unwirepages(struct uvm_object *uobj, off_t start,
679 off_t end);
680
681 /* uvm_page.c */
682 struct vm_page *uvm_pagealloc_strat(struct uvm_object *,
683 voff_t, struct vm_anon *, int, int, int);
684 #define uvm_pagealloc(obj, off, anon, flags) \
685 uvm_pagealloc_strat((obj), (off), (anon), (flags), \
686 UVM_PGA_STRAT_NORMAL, 0)
687 void uvm_pagereplace(struct vm_page *,
688 struct vm_page *);
689 void uvm_pagerealloc(struct vm_page *,
690 struct uvm_object *, voff_t);
691 /* Actually, uvm_page_physload takes PF#s which need their own type */
692 void uvm_page_physload(paddr_t, paddr_t, paddr_t,
693 paddr_t, int);
694 void uvm_setpagesize(void);
695
696 /* uvm_pager.c */
697 void uvm_aio_biodone1(struct buf *);
698 void uvm_aio_biodone(struct buf *);
699 void uvm_aio_aiodone(struct buf *);
700 void uvm_aio_aiodone_pages(struct vm_page **, int, bool,
701 int);
702
703 /* uvm_pdaemon.c */
704 void uvm_pageout(void *);
705 struct work;
706 void uvm_aiodone_worker(struct work *, void *);
707 void uvm_pageout_start(int);
708 void uvm_pageout_done(int);
709 void uvm_estimatepageable(int *, int *);
710
711 /* uvm_pglist.c */
712 int uvm_pglistalloc(psize_t, paddr_t, paddr_t,
713 paddr_t, paddr_t, struct pglist *, int, int);
714 void uvm_pglistfree(struct pglist *);
715
716 /* uvm_swap.c */
717 void uvm_swap_init(void);
718
719 /* uvm_unix.c */
720 int uvm_grow(struct proc *, vaddr_t);
721
722 /* uvm_user.c */
723 void uvm_deallocate(struct vm_map *, vaddr_t, vsize_t);
724
725 /* uvm_vnode.c */
726 void uvm_vnp_setsize(struct vnode *, voff_t);
727 void uvm_vnp_setwritesize(struct vnode *, voff_t);
728 int uvn_findpages(struct uvm_object *, voff_t,
729 int *, struct vm_page **, int);
730 void uvm_vnp_zerorange(struct vnode *, off_t, size_t);
731 bool uvn_text_p(struct uvm_object *);
732 bool uvn_clean_p(struct uvm_object *);
733 bool uvn_needs_writefault_p(struct uvm_object *);
734
735 /* kern_malloc.c */
736 void kmeminit_nkmempages(void);
737 void kmeminit(void);
738 extern int nkmempages;
739
740 #endif /* _KERNEL */
741
742 #endif /* _UVM_UVM_EXTERN_H_ */
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