uvm_extern.h revision 1.204
1/* $NetBSD: uvm_extern.h,v 1.204 2017/05/06 21:34:52 joerg Exp $ */ 2 3/* 4 * Copyright (c) 1997 Charles D. Cranor and Washington University. 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 21 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 22 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 23 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 25 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 26 * 27 * from: Id: uvm_extern.h,v 1.1.2.21 1998/02/07 01:16:53 chs Exp 28 */ 29 30/*- 31 * Copyright (c) 1991, 1992, 1993 32 * The Regents of the University of California. All rights reserved. 33 * 34 * Redistribution and use in source and binary forms, with or without 35 * modification, are permitted provided that the following conditions 36 * are met: 37 * 1. Redistributions of source code must retain the above copyright 38 * notice, this list of conditions and the following disclaimer. 39 * 2. Redistributions in binary form must reproduce the above copyright 40 * notice, this list of conditions and the following disclaimer in the 41 * documentation and/or other materials provided with the distribution. 42 * 3. Neither the name of the University nor the names of its contributors 43 * may be used to endorse or promote products derived from this software 44 * without specific prior written permission. 45 * 46 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 47 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 48 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 49 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 50 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 51 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 52 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 53 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 54 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 55 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 56 * SUCH DAMAGE. 57 * 58 * @(#)vm_extern.h 8.5 (Berkeley) 5/3/95 59 */ 60 61#ifndef _UVM_UVM_EXTERN_H_ 62#define _UVM_UVM_EXTERN_H_ 63 64/* 65 * uvm_extern.h: this file defines the external interface to the VM system. 66 * 67 * this should be the only file included by non-VM parts of the kernel 68 * which need access to VM services. if you want to know the interface 69 * to the MI VM layer without knowing the details, this is the file to 70 * learn. 71 * 72 * NOTE: vm system calls are prototyped in syscallargs.h 73 */ 74 75/* 76 * defines 77 */ 78 79/* 80 * the following defines are for uvm_map and functions which call it. 81 */ 82 83/* protections bits */ 84#define UVM_PROT_MASK 0x07 /* protection mask */ 85#define UVM_PROT_NONE 0x00 /* protection none */ 86#define UVM_PROT_ALL 0x07 /* everything */ 87#define UVM_PROT_READ 0x01 /* read */ 88#define UVM_PROT_WRITE 0x02 /* write */ 89#define UVM_PROT_EXEC 0x04 /* exec */ 90 91/* protection short codes */ 92#define UVM_PROT_R 0x01 /* read */ 93#define UVM_PROT_W 0x02 /* write */ 94#define UVM_PROT_RW 0x03 /* read-write */ 95#define UVM_PROT_X 0x04 /* exec */ 96#define UVM_PROT_RX 0x05 /* read-exec */ 97#define UVM_PROT_WX 0x06 /* write-exec */ 98#define UVM_PROT_RWX 0x07 /* read-write-exec */ 99 100/* 0x08: not used */ 101 102/* inherit codes */ 103#define UVM_INH_MASK 0x30 /* inherit mask */ 104#define UVM_INH_SHARE 0x00 /* "share" */ 105#define UVM_INH_COPY 0x10 /* "copy" */ 106#define UVM_INH_NONE 0x20 /* "none" */ 107#define UVM_INH_DONATE 0x30 /* "donate" << not used */ 108 109/* 0x40, 0x80: not used */ 110 111/* bits 0x700: max protection, 0x800: not used */ 112 113/* bits 0x7000: advice, 0x8000: not used */ 114/* advice: matches MADV_* from sys/mman.h and POSIX_FADV_* from sys/fcntl.h */ 115#define UVM_ADV_NORMAL 0x0 /* 'normal' */ 116#define UVM_ADV_RANDOM 0x1 /* 'random' */ 117#define UVM_ADV_SEQUENTIAL 0x2 /* 'sequential' */ 118#define UVM_ADV_WILLNEED 0x3 /* pages will be needed */ 119#define UVM_ADV_DONTNEED 0x4 /* pages won't be needed */ 120#define UVM_ADV_NOREUSE 0x5 /* pages will be used only once */ 121#define UVM_ADV_MASK 0x7 /* mask */ 122 123/* bits 0xffff0000: mapping flags */ 124#define UVM_FLAG_FIXED 0x010000 /* find space */ 125#define UVM_FLAG_OVERLAY 0x020000 /* establish overlay */ 126#define UVM_FLAG_NOMERGE 0x040000 /* don't merge map entries */ 127#define UVM_FLAG_COPYONW 0x080000 /* set copy_on_write flag */ 128#define UVM_FLAG_AMAPPAD 0x100000 /* for bss: pad amap to reduce allocations */ 129#define UVM_FLAG_TRYLOCK 0x200000 /* fail if we can not lock map */ 130#define UVM_FLAG_NOWAIT 0x400000 /* not allowed to sleep */ 131#define UVM_FLAG_WAITVA 0x800000 /* wait for va */ 132#define UVM_FLAG_VAONLY 0x2000000 /* unmap: no pages are mapped */ 133#define UVM_FLAG_COLORMATCH 0x4000000 /* match color given in off */ 134 135/* macros to extract info */ 136#define UVM_PROTECTION(X) ((X) & UVM_PROT_MASK) 137#define UVM_INHERIT(X) (((X) & UVM_INH_MASK) >> 4) 138#define UVM_MAXPROTECTION(X) (((X) >> 8) & UVM_PROT_MASK) 139#define UVM_ADVICE(X) (((X) >> 12) & UVM_ADV_MASK) 140 141#define UVM_MAPFLAG(PROT,MAXPROT,INH,ADVICE,FLAGS) \ 142 (((MAXPROT) << 8)|(PROT)|(INH)|((ADVICE) << 12)|(FLAGS)) 143 144/* magic offset value: offset not known(obj) or don't care(!obj) */ 145#define UVM_UNKNOWN_OFFSET ((voff_t) -1) 146 147/* 148 * the following defines are for uvm_km_alloc/free's flags 149 */ 150#define UVM_KMF_WIRED 0x1 /* allocation type: wired */ 151#define UVM_KMF_PAGEABLE 0x2 /* allocation type: pageable */ 152#define UVM_KMF_VAONLY 0x4 /* allocation type: VA only */ 153#define UVM_KMF_TYPEMASK (UVM_KMF_VAONLY | UVM_KMF_PAGEABLE | UVM_KMF_WIRED) 154#define UVM_KMF_CANFAIL 0x8 /* caller handles failure */ 155#define UVM_KMF_ZERO 0x10 /* want zero filled memory */ 156#define UVM_KMF_EXEC 0x20 /* need executable mapping */ 157#define UVM_KMF_TRYLOCK UVM_FLAG_TRYLOCK /* try locking only */ 158#define UVM_KMF_NOWAIT UVM_FLAG_NOWAIT /* not allowed to sleep */ 159#define UVM_KMF_WAITVA UVM_FLAG_WAITVA /* sleep for va */ 160#define UVM_KMF_COLORMATCH UVM_FLAG_COLORMATCH /* start at color in align */ 161 162/* 163 * the following defines the strategies for uvm_pagealloc_strat() 164 */ 165#define UVM_PGA_STRAT_NORMAL 0 /* priority (low id to high) walk */ 166#define UVM_PGA_STRAT_ONLY 1 /* only specified free list */ 167#define UVM_PGA_STRAT_FALLBACK 2 /* ONLY falls back on NORMAL */ 168 169/* 170 * flags for uvm_pagealloc_strat() 171 */ 172#define UVM_PGA_USERESERVE 0x0001 /* ok to use reserve pages */ 173#define UVM_PGA_ZERO 0x0002 /* returned page must be zero'd */ 174 175/* 176 * flags for ubc_alloc() 177 */ 178#define UBC_READ 0x001 /* reading from object */ 179#define UBC_WRITE 0x002 /* writing to object */ 180#define UBC_FAULTBUSY 0x004 /* nobody else is using these pages, so busy 181 * them at alloc and unbusy at release (e.g., 182 * for writes extending a file) */ 183 184/* 185 * flags for ubc_release() 186 */ 187#define UBC_UNMAP 0x010 /* unmap pages now -- don't leave the 188 * mappings cached indefinitely */ 189 190/* 191 * flags for ubc_uiomove() 192 */ 193#define UBC_PARTIALOK 0x100 /* return early on error; otherwise, zero all 194 * remaining bytes after error */ 195 196/* 197 * flags for uvn_findpages(). 198 */ 199#define UFP_ALL 0x00 200#define UFP_NOWAIT 0x01 201#define UFP_NOALLOC 0x02 202#define UFP_NOCACHE 0x04 203#define UFP_NORDONLY 0x08 204#define UFP_DIRTYONLY 0x10 205#define UFP_BACKWARD 0x20 206 207/* 208 * lockflags that control the locking behavior of various functions. 209 */ 210#define UVM_LK_ENTER 0x00000001 /* map locked on entry */ 211#define UVM_LK_EXIT 0x00000002 /* leave map locked on exit */ 212 213/* 214 * Default number of pages to allocate on the stack 215 */ 216#define UBC_MAX_PAGES 8 217 218/* 219 * Value representing inactive emap. 220 */ 221#define UVM_EMAP_INACTIVE (0) 222 223/* 224 * structures 225 */ 226 227struct buf; 228struct core; 229struct loadavg; 230struct mount; 231struct pglist; 232struct proc; 233struct uio; 234struct uvm_object; 235struct vm_anon; 236struct vmspace; 237struct pmap; 238struct vnode; 239struct vm_map_entry; 240struct vm_map; 241struct vm_page; 242struct vmtotal; 243 244/* 245 * uvm_pctparam: parameter to be shown as percentage to user. 246 */ 247 248#define UVM_PCTPARAM_SHIFT 8 249#define UVM_PCTPARAM_SCALE (1 << UVM_PCTPARAM_SHIFT) 250#define UVM_PCTPARAM_APPLY(pct, x) \ 251 (((x) * (pct)->pct_scaled) >> UVM_PCTPARAM_SHIFT) 252struct uvm_pctparam { 253 int pct_pct; /* percent [0, 100] */ /* should be the first member */ 254 int pct_scaled; 255 int (*pct_check)(struct uvm_pctparam *, int); 256}; 257 258/* 259 * uvmexp: global data structures that are exported to parts of the kernel 260 * other than the vm system. 261 */ 262 263struct uvmexp { 264 /* vm_page constants */ 265 int pagesize; /* size of a page (PAGE_SIZE): must be power of 2 */ 266 int pagemask; /* page mask */ 267 int pageshift; /* page shift */ 268 269 /* vm_page counters */ 270 int npages; /* number of pages we manage */ 271 int free; /* number of free pages */ 272 int paging; /* number of pages in the process of being paged out */ 273 int wired; /* number of wired pages */ 274 275 /* 276 * Adding anything before this line will break binary compatibility 277 * with top(1) on NetBSD 1.5. 278 */ 279 280 int ncolors; /* number of page color buckets: must be p-o-2 */ 281 int colormask; /* color bucket mask */ 282 283 int zeropages; /* number of zero'd pages */ 284 int reserve_pagedaemon; /* number of pages reserved for pagedaemon */ 285 int reserve_kernel; /* number of pages reserved for kernel */ 286 unsigned anonpages; /* number of pages used by anon mappings */ 287 unsigned filepages; /* number of pages used by cached file data */ 288 unsigned execpages; /* number of pages used by cached exec data */ 289 290 /* pageout params */ 291 int freemin; /* min number of free pages */ 292 int freetarg; /* target number of free pages */ 293 int wiredmax; /* max number of wired pages */ 294 295 /* swap */ 296 int nswapdev; /* number of configured swap devices in system */ 297 int swpages; /* number of PAGE_SIZE'ed swap pages */ 298 int swpgavail; /* number of swap pages currently available */ 299 int swpginuse; /* number of swap pages in use */ 300 int swpgonly; /* number of swap pages in use, not also in RAM */ 301 int nswget; /* number of times fault calls uvm_swap_get() */ 302 303 /* stat counters. XXX: should be 64-bit counters */ 304 int _unused_faults; /* page fault count */ 305 int _unused_traps; /* trap count */ 306 int _unused_intrs; /* interrupt count */ 307 int _unused_swtch; /* context switch count */ 308 int _unused_softs; /* software interrupt count */ 309 int _unused_syscalls; /* system calls */ 310 int pageins; /* pagein operation count */ 311 /* pageouts are in pdpageouts below */ 312 int _unused1; 313 int _unused2; 314 int pgswapin; /* pages swapped in */ 315 int pgswapout; /* pages swapped out */ 316 int forks; /* forks */ 317 int forks_ppwait; /* forks where parent waits */ 318 int forks_sharevm; /* forks where vmspace is shared */ 319 int pga_zerohit; /* pagealloc where zero wanted and zero 320 was available */ 321 int pga_zeromiss; /* pagealloc where zero wanted and zero 322 not available */ 323 int zeroaborts; /* number of times page zeroing was 324 aborted */ 325 int colorhit; /* pagealloc where we got optimal color */ 326 int colormiss; /* pagealloc where we didn't */ 327 int cpuhit; /* pagealloc where we allocated locally */ 328 int cpumiss; /* pagealloc where we didn't */ 329 330 /* fault subcounters. XXX: should be 64-bit counters */ 331 int fltnoram; /* number of times fault was out of ram */ 332 int fltnoanon; /* number of times fault was out of anons */ 333 int fltpgwait; /* number of times fault had to wait on a page */ 334 int fltpgrele; /* number of times fault found a released page */ 335 int fltrelck; /* number of times fault relock called */ 336 int fltrelckok; /* number of times fault relock is a success */ 337 int fltanget; /* number of times fault gets anon page */ 338 int fltanretry; /* number of times fault retrys an anon get */ 339 int fltamcopy; /* number of times fault clears "needs copy" */ 340 int fltnamap; /* number of times fault maps a neighbor anon page */ 341 int fltnomap; /* number of times fault maps a neighbor obj page */ 342 int fltlget; /* number of times fault does a locked pgo_get */ 343 int fltget; /* number of times fault does an unlocked get */ 344 int flt_anon; /* number of times fault anon (case 1a) */ 345 int flt_acow; /* number of times fault anon cow (case 1b) */ 346 int flt_obj; /* number of times fault is on object page (2a) */ 347 int flt_prcopy; /* number of times fault promotes with copy (2b) */ 348 int flt_przero; /* number of times fault promotes with zerofill (2b) */ 349 350 /* daemon counters. XXX: should be 64-bit counters */ 351 int pdwoke; /* number of times daemon woke up */ 352 int pdrevs; /* number of times daemon rev'd clock hand */ 353 int _unused3; 354 int pdfreed; /* number of pages daemon freed since boot */ 355 int pdscans; /* number of pages daemon scanned since boot */ 356 int pdanscan; /* number of anonymous pages scanned by daemon */ 357 int pdobscan; /* number of object pages scanned by daemon */ 358 int pdreact; /* number of pages daemon reactivated since boot */ 359 int pdbusy; /* number of times daemon found a busy page */ 360 int pdpageouts; /* number of times daemon started a pageout */ 361 int pdpending; /* number of times daemon got a pending pagout */ 362 int pddeact; /* number of pages daemon deactivates */ 363 int pdreanon; /* anon pages reactivated due to thresholds */ 364 int pdrefile; /* file pages reactivated due to thresholds */ 365 int pdreexec; /* executable pages reactivated due to thresholds */ 366}; 367 368/* 369 * The following structure is 64-bit alignment safe. New elements 370 * should only be added to the end of this structure so binary 371 * compatibility can be preserved. 372 */ 373struct uvmexp_sysctl { 374 int64_t pagesize; 375 int64_t pagemask; 376 int64_t pageshift; 377 int64_t npages; 378 int64_t free; 379 int64_t active; 380 int64_t inactive; 381 int64_t paging; 382 int64_t wired; 383 int64_t zeropages; 384 int64_t reserve_pagedaemon; 385 int64_t reserve_kernel; 386 int64_t freemin; 387 int64_t freetarg; 388 int64_t inactarg; /* unused */ 389 int64_t wiredmax; 390 int64_t nswapdev; 391 int64_t swpages; 392 int64_t swpginuse; 393 int64_t swpgonly; 394 int64_t nswget; 395 int64_t unused1; /* unused; was nanon */ 396 int64_t cpuhit; 397 int64_t cpumiss; 398 int64_t faults; 399 int64_t traps; 400 int64_t intrs; 401 int64_t swtch; 402 int64_t softs; 403 int64_t syscalls; 404 int64_t pageins; 405 int64_t swapins; /* unused */ 406 int64_t swapouts; /* unused */ 407 int64_t pgswapin; 408 int64_t pgswapout; 409 int64_t forks; 410 int64_t forks_ppwait; 411 int64_t forks_sharevm; 412 int64_t pga_zerohit; 413 int64_t pga_zeromiss; 414 int64_t zeroaborts; 415 int64_t fltnoram; 416 int64_t fltnoanon; 417 int64_t fltpgwait; 418 int64_t fltpgrele; 419 int64_t fltrelck; 420 int64_t fltrelckok; 421 int64_t fltanget; 422 int64_t fltanretry; 423 int64_t fltamcopy; 424 int64_t fltnamap; 425 int64_t fltnomap; 426 int64_t fltlget; 427 int64_t fltget; 428 int64_t flt_anon; 429 int64_t flt_acow; 430 int64_t flt_obj; 431 int64_t flt_prcopy; 432 int64_t flt_przero; 433 int64_t pdwoke; 434 int64_t pdrevs; 435 int64_t unused4; 436 int64_t pdfreed; 437 int64_t pdscans; 438 int64_t pdanscan; 439 int64_t pdobscan; 440 int64_t pdreact; 441 int64_t pdbusy; 442 int64_t pdpageouts; 443 int64_t pdpending; 444 int64_t pddeact; 445 int64_t anonpages; 446 int64_t filepages; 447 int64_t execpages; 448 int64_t colorhit; 449 int64_t colormiss; 450 int64_t ncolors; 451}; 452 453#ifdef _KERNEL 454/* we need this before including uvm_page.h on some platforms */ 455extern struct uvmexp uvmexp; 456/* MD code needs this without including <uvm/uvm.h> */ 457extern bool vm_page_zero_enable; 458#endif 459 460/* 461 * Finally, bring in standard UVM headers. 462 */ 463#include <sys/vmmeter.h> 464#include <sys/queue.h> 465#include <sys/lock.h> 466#ifdef _KERNEL 467#include <sys/vmem.h> 468#endif 469#include <uvm/uvm_param.h> 470#include <uvm/uvm_prot.h> 471#include <uvm/uvm_pmap.h> 472#if defined(_KERNEL) || defined(_KMEMUSER) 473#include <uvm/uvm_map.h> 474#include <uvm/uvm_pager.h> 475#endif 476 477#ifdef _KERNEL 478/* 479 * Include the uvm_hotplug(9) API unconditionally until 480 * uvm_page_physload() et. al. are obsoleted 481 * 482 * After this, MD code will have to explicitly include it if needed. 483 */ 484#include <uvm/uvm_physseg.h> 485#endif 486 487/* 488 * helpers for calling ubc_release() 489 */ 490#ifdef PMAP_CACHE_VIVT 491#define UBC_WANT_UNMAP(vp) (((vp)->v_iflag & VI_TEXT) != 0) 492#else 493#define UBC_WANT_UNMAP(vp) false 494#endif 495#define UBC_UNMAP_FLAG(vp) (UBC_WANT_UNMAP(vp) ? UBC_UNMAP : 0) 496 497#if defined(_KERNEL) || defined(_KMEMUSER) 498/* 499 * Shareable process virtual address space. 500 * May eventually be merged with vm_map. 501 * Several fields are temporary (text, data stuff). 502 */ 503struct vmspace { 504 struct vm_map vm_map; /* VM address map */ 505 int vm_refcnt; /* number of references * 506 * note: protected by vm_map.ref_lock */ 507 void * vm_shm; /* SYS5 shared memory private data XXX */ 508/* we copy from vm_startcopy to the end of the structure on fork */ 509#define vm_startcopy vm_rssize 510 segsz_t vm_rssize; /* current resident set size in pages */ 511 segsz_t vm_swrss; /* resident set size before last swap */ 512 segsz_t vm_tsize; /* text size (pages) XXX */ 513 segsz_t vm_dsize; /* data size (pages) XXX */ 514 segsz_t vm_ssize; /* stack size (pages) */ 515 segsz_t vm_issize; /* initial unmapped stack size (pages) */ 516 void * vm_taddr; /* user virtual address of text XXX */ 517 void * vm_daddr; /* user virtual address of data XXX */ 518 void *vm_maxsaddr; /* user VA at max stack growth */ 519 void *vm_minsaddr; /* user VA at top of stack */ 520 size_t vm_aslr_delta_mmap; /* mmap() random delta for ASLR */ 521}; 522#define VMSPACE_IS_KERNEL_P(vm) VM_MAP_IS_KERNEL(&(vm)->vm_map) 523#endif 524 525#ifdef _KERNEL 526 527/* 528 * used to keep state while iterating over the map for a core dump. 529 */ 530struct uvm_coredump_state { 531 void *cookie; /* opaque for the caller */ 532 vaddr_t start; /* start of region */ 533 vaddr_t realend; /* real end of region */ 534 vaddr_t end; /* virtual end of region */ 535 vm_prot_t prot; /* protection of region */ 536 int flags; /* flags; see below */ 537}; 538 539#define UVM_COREDUMP_STACK 0x01 /* region is user stack */ 540 541/* 542 * the various kernel maps, owned by MD code 543 */ 544extern struct vm_map *kernel_map; 545extern struct vm_map *phys_map; 546 547/* 548 * macros 549 */ 550 551#define vm_resident_count(vm) (pmap_resident_count((vm)->vm_map.pmap)) 552 553 554/* vm_machdep.c */ 555int vmapbuf(struct buf *, vsize_t); 556void vunmapbuf(struct buf *, vsize_t); 557 558/* uvm_aobj.c */ 559struct uvm_object *uao_create(vsize_t, int); 560void uao_set_pgfl(struct uvm_object *, int); 561void uao_detach(struct uvm_object *); 562void uao_reference(struct uvm_object *); 563 564/* uvm_bio.c */ 565void ubc_init(void); 566void ubchist_init(void); 567void * ubc_alloc(struct uvm_object *, voff_t, vsize_t *, int, 568 int); 569void ubc_release(void *, int); 570int ubc_uiomove(struct uvm_object *, struct uio *, vsize_t, 571 int, int); 572void ubc_zerorange(struct uvm_object *, off_t, size_t, int); 573void ubc_purge(struct uvm_object *); 574 575/* uvm_emap.c */ 576void uvm_emap_sysinit(void); 577#ifdef __HAVE_PMAP_EMAP 578void uvm_emap_switch(lwp_t *); 579#else 580#define uvm_emap_switch(l) 581#endif 582 583u_int uvm_emap_gen_return(void); 584void uvm_emap_update(u_int); 585 586vaddr_t uvm_emap_alloc(vsize_t, bool); 587void uvm_emap_free(vaddr_t, size_t); 588 589void uvm_emap_enter(vaddr_t, struct vm_page **, u_int); 590void uvm_emap_remove(vaddr_t, vsize_t); 591 592#ifdef __HAVE_PMAP_EMAP 593void uvm_emap_consume(u_int); 594u_int uvm_emap_produce(void); 595#else 596#define uvm_emap_consume(x) 597#define uvm_emap_produce() UVM_EMAP_INACTIVE 598#endif 599 600/* uvm_fault.c */ 601#define uvm_fault(m, a, p) uvm_fault_internal(m, a, p, 0) 602int uvm_fault_internal(struct vm_map *, vaddr_t, vm_prot_t, int); 603 /* handle a page fault */ 604 605/* uvm_glue.c */ 606#if defined(KGDB) 607void uvm_chgkprot(void *, size_t, int); 608#endif 609void uvm_proc_fork(struct proc *, struct proc *, bool); 610void uvm_lwp_fork(struct lwp *, struct lwp *, 611 void *, size_t, void (*)(void *), void *); 612int uvm_coredump_walkmap(struct proc *, 613 int (*)(struct uvm_coredump_state *), void *); 614int uvm_coredump_count_segs(struct proc *); 615void uvm_proc_exit(struct proc *); 616void uvm_lwp_exit(struct lwp *); 617void uvm_init_limits(struct proc *); 618bool uvm_kernacc(void *, size_t, vm_prot_t); 619__dead void uvm_scheduler(void); 620vaddr_t uvm_uarea_alloc(void); 621void uvm_uarea_free(vaddr_t); 622vaddr_t uvm_uarea_system_alloc(struct cpu_info *); 623void uvm_uarea_system_free(vaddr_t); 624vaddr_t uvm_lwp_getuarea(lwp_t *); 625void uvm_lwp_setuarea(lwp_t *, vaddr_t); 626int uvm_vslock(struct vmspace *, void *, size_t, vm_prot_t); 627void uvm_vsunlock(struct vmspace *, void *, size_t); 628void uvm_cpu_attach(struct cpu_info *); 629 630 631/* uvm_init.c */ 632void uvm_md_init(void); 633void uvm_init(void); 634 635/* uvm_io.c */ 636int uvm_io(struct vm_map *, struct uio *, int); 637 638/* uvm_km.c */ 639vaddr_t uvm_km_alloc(struct vm_map *, vsize_t, vsize_t, 640 uvm_flag_t); 641int uvm_km_protect(struct vm_map *, vaddr_t, vsize_t, 642 vm_prot_t); 643void uvm_km_free(struct vm_map *, vaddr_t, vsize_t, 644 uvm_flag_t); 645 646struct vm_map *uvm_km_suballoc(struct vm_map *, vaddr_t *, 647 vaddr_t *, vsize_t, int, bool, 648 struct vm_map *); 649int uvm_km_kmem_alloc(vmem_t *, vmem_size_t, vm_flag_t, 650 vmem_addr_t *); 651void uvm_km_kmem_free(vmem_t *, vmem_addr_t, vmem_size_t); 652bool uvm_km_va_starved_p(void); 653 654/* uvm_map.c */ 655int uvm_map(struct vm_map *, vaddr_t *, vsize_t, 656 struct uvm_object *, voff_t, vsize_t, 657 uvm_flag_t); 658int uvm_map_pageable(struct vm_map *, vaddr_t, 659 vaddr_t, bool, int); 660int uvm_map_pageable_all(struct vm_map *, int, vsize_t); 661bool uvm_map_checkprot(struct vm_map *, vaddr_t, 662 vaddr_t, vm_prot_t); 663int uvm_map_protect(struct vm_map *, vaddr_t, 664 vaddr_t, vm_prot_t, bool); 665int uvm_map_protect_user(struct lwp *, vaddr_t, vaddr_t, 666 vm_prot_t); 667struct vmspace *uvmspace_alloc(vaddr_t, vaddr_t, bool); 668void uvmspace_init(struct vmspace *, struct pmap *, 669 vaddr_t, vaddr_t, bool); 670void uvmspace_exec(struct lwp *, vaddr_t, vaddr_t, bool); 671void uvmspace_spawn(struct lwp *, vaddr_t, vaddr_t, bool); 672struct vmspace *uvmspace_fork(struct vmspace *); 673void uvmspace_addref(struct vmspace *); 674void uvmspace_free(struct vmspace *); 675void uvmspace_share(struct proc *, struct proc *); 676void uvmspace_unshare(struct lwp *); 677 678void uvm_whatis(uintptr_t, void (*)(const char *, ...)); 679 680/* uvm_meter.c */ 681int uvm_sysctl(int *, u_int, void *, size_t *, 682 void *, size_t, struct proc *); 683int uvm_pctparam_check(struct uvm_pctparam *, int); 684void uvm_pctparam_set(struct uvm_pctparam *, int); 685int uvm_pctparam_get(struct uvm_pctparam *); 686void uvm_pctparam_init(struct uvm_pctparam *, int, 687 int (*)(struct uvm_pctparam *, int)); 688int uvm_pctparam_createsysctlnode(struct uvm_pctparam *, 689 const char *, const char *); 690 691/* uvm_mmap.c */ 692int uvm_mmap_dev(struct proc *, void **, size_t, dev_t, 693 off_t); 694int uvm_mmap_anon(struct proc *, void **, size_t); 695vaddr_t uvm_default_mapaddr(struct proc *, vaddr_t, vsize_t, 696 int); 697 698/* uvm_mremap.c */ 699int uvm_mremap(struct vm_map *, vaddr_t, vsize_t, 700 struct vm_map *, vaddr_t *, vsize_t, 701 struct proc *, int); 702 703/* uvm_object.c */ 704void uvm_obj_init(struct uvm_object *, 705 const struct uvm_pagerops *, bool, u_int); 706void uvm_obj_setlock(struct uvm_object *, kmutex_t *); 707void uvm_obj_destroy(struct uvm_object *, bool); 708int uvm_obj_wirepages(struct uvm_object *, off_t, off_t, 709 struct pglist *); 710void uvm_obj_unwirepages(struct uvm_object *, off_t, off_t); 711 712/* uvm_page.c */ 713struct vm_page *uvm_pagealloc_strat(struct uvm_object *, 714 voff_t, struct vm_anon *, int, int, int); 715#define uvm_pagealloc(obj, off, anon, flags) \ 716 uvm_pagealloc_strat((obj), (off), (anon), (flags), \ 717 UVM_PGA_STRAT_NORMAL, 0) 718void uvm_pagereplace(struct vm_page *, 719 struct vm_page *); 720void uvm_pagerealloc(struct vm_page *, 721 struct uvm_object *, voff_t); 722void uvm_setpagesize(void); 723 724/* uvm_pager.c */ 725void uvm_aio_biodone(struct buf *); 726void uvm_aio_aiodone(struct buf *); 727void uvm_aio_aiodone_pages(struct vm_page **, int, bool, 728 int); 729 730/* uvm_pdaemon.c */ 731void uvm_pageout(void *); 732struct work; 733void uvm_aiodone_worker(struct work *, void *); 734void uvm_pageout_start(int); 735void uvm_pageout_done(int); 736void uvm_estimatepageable(int *, int *); 737 738/* uvm_pglist.c */ 739int uvm_pglistalloc(psize_t, paddr_t, paddr_t, 740 paddr_t, paddr_t, struct pglist *, int, int); 741void uvm_pglistfree(struct pglist *); 742 743/* uvm_swap.c */ 744void uvm_swap_init(void); 745 746/* uvm_unix.c */ 747int uvm_grow(struct proc *, vaddr_t); 748 749/* uvm_user.c */ 750void uvm_deallocate(struct vm_map *, vaddr_t, vsize_t); 751 752/* uvm_vnode.c */ 753void uvm_vnp_setsize(struct vnode *, voff_t); 754void uvm_vnp_setwritesize(struct vnode *, voff_t); 755int uvn_findpages(struct uvm_object *, voff_t, 756 int *, struct vm_page **, int); 757bool uvn_text_p(struct uvm_object *); 758bool uvn_clean_p(struct uvm_object *); 759bool uvn_needs_writefault_p(struct uvm_object *); 760 761/* kern_malloc.c */ 762void kmeminit_nkmempages(void); 763extern int nkmempages; 764 765#endif /* _KERNEL */ 766 767#endif /* _UVM_UVM_EXTERN_H_ */ 768