uvm_extern.h revision 1.191
1/* $NetBSD: uvm_extern.h,v 1.191 2014/07/07 20:14:43 riastradh 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 223struct buf; 224struct core; 225struct loadavg; 226struct mount; 227struct pglist; 228struct proc; 229struct uio; 230struct uvm_object; 231struct vm_anon; 232struct vmspace; 233struct pmap; 234struct vnode; 235struct vm_map_entry; 236struct vm_map; 237struct vm_page; 238struct vmtotal; 239 240/* 241 * uvm_pctparam: parameter to be shown as percentage to user. 242 */ 243 244#define UVM_PCTPARAM_SHIFT 8 245#define UVM_PCTPARAM_SCALE (1 << UVM_PCTPARAM_SHIFT) 246#define UVM_PCTPARAM_APPLY(pct, x) \ 247 (((x) * (pct)->pct_scaled) >> UVM_PCTPARAM_SHIFT) 248struct uvm_pctparam { 249 int pct_pct; /* percent [0, 100] */ /* should be the first member */ 250 int pct_scaled; 251 int (*pct_check)(struct uvm_pctparam *, int); 252}; 253 254/* 255 * uvmexp: global data structures that are exported to parts of the kernel 256 * other than the vm system. 257 */ 258 259struct uvmexp { 260 /* vm_page constants */ 261 int pagesize; /* size of a page (PAGE_SIZE): must be power of 2 */ 262 int pagemask; /* page mask */ 263 int pageshift; /* page shift */ 264 265 /* vm_page counters */ 266 int npages; /* number of pages we manage */ 267 int free; /* number of free pages */ 268 int paging; /* number of pages in the process of being paged out */ 269 int wired; /* number of wired pages */ 270 271 /* 272 * Adding anything before this line will break binary compatibility 273 * with top(1) on NetBSD 1.5. 274 */ 275 276 int ncolors; /* number of page color buckets: must be p-o-2 */ 277 int colormask; /* color bucket mask */ 278 279 int zeropages; /* number of zero'd pages */ 280 int reserve_pagedaemon; /* number of pages reserved for pagedaemon */ 281 int reserve_kernel; /* number of pages reserved for kernel */ 282 unsigned anonpages; /* number of pages used by anon mappings */ 283 unsigned filepages; /* number of pages used by cached file data */ 284 unsigned execpages; /* number of pages used by cached exec data */ 285 286 /* pageout params */ 287 int freemin; /* min number of free pages */ 288 int freetarg; /* target number of free pages */ 289 int wiredmax; /* max number of wired pages */ 290 291 /* swap */ 292 int nswapdev; /* number of configured swap devices in system */ 293 int swpages; /* number of PAGE_SIZE'ed swap pages */ 294 int swpgavail; /* number of swap pages currently available */ 295 int swpginuse; /* number of swap pages in use */ 296 int swpgonly; /* number of swap pages in use, not also in RAM */ 297 int nswget; /* number of times fault calls uvm_swap_get() */ 298 299 /* stat counters. XXX: should be 64-bit counters */ 300 int _unused_faults; /* page fault count */ 301 int _unused_traps; /* trap count */ 302 int _unused_intrs; /* interrupt count */ 303 int _unused_swtch; /* context switch count */ 304 int _unused_softs; /* software interrupt count */ 305 int _unused_syscalls; /* system calls */ 306 int pageins; /* pagein operation count */ 307 /* pageouts are in pdpageouts below */ 308 int _unused1; 309 int _unused2; 310 int pgswapin; /* pages swapped in */ 311 int pgswapout; /* pages swapped out */ 312 int forks; /* forks */ 313 int forks_ppwait; /* forks where parent waits */ 314 int forks_sharevm; /* forks where vmspace is shared */ 315 int pga_zerohit; /* pagealloc where zero wanted and zero 316 was available */ 317 int pga_zeromiss; /* pagealloc where zero wanted and zero 318 not available */ 319 int zeroaborts; /* number of times page zeroing was 320 aborted */ 321 int colorhit; /* pagealloc where we got optimal color */ 322 int colormiss; /* pagealloc where we didn't */ 323 int cpuhit; /* pagealloc where we allocated locally */ 324 int cpumiss; /* pagealloc where we didn't */ 325 326 /* fault subcounters. XXX: should be 64-bit counters */ 327 int fltnoram; /* number of times fault was out of ram */ 328 int fltnoanon; /* number of times fault was out of anons */ 329 int fltpgwait; /* number of times fault had to wait on a page */ 330 int fltpgrele; /* number of times fault found a released page */ 331 int fltrelck; /* number of times fault relock called */ 332 int fltrelckok; /* number of times fault relock is a success */ 333 int fltanget; /* number of times fault gets anon page */ 334 int fltanretry; /* number of times fault retrys an anon get */ 335 int fltamcopy; /* number of times fault clears "needs copy" */ 336 int fltnamap; /* number of times fault maps a neighbor anon page */ 337 int fltnomap; /* number of times fault maps a neighbor obj page */ 338 int fltlget; /* number of times fault does a locked pgo_get */ 339 int fltget; /* number of times fault does an unlocked get */ 340 int flt_anon; /* number of times fault anon (case 1a) */ 341 int flt_acow; /* number of times fault anon cow (case 1b) */ 342 int flt_obj; /* number of times fault is on object page (2a) */ 343 int flt_prcopy; /* number of times fault promotes with copy (2b) */ 344 int flt_przero; /* number of times fault promotes with zerofill (2b) */ 345 346 /* daemon counters. XXX: should be 64-bit counters */ 347 int pdwoke; /* number of times daemon woke up */ 348 int pdrevs; /* number of times daemon rev'd clock hand */ 349 int _unused3; 350 int pdfreed; /* number of pages daemon freed since boot */ 351 int pdscans; /* number of pages daemon scanned since boot */ 352 int pdanscan; /* number of anonymous pages scanned by daemon */ 353 int pdobscan; /* number of object pages scanned by daemon */ 354 int pdreact; /* number of pages daemon reactivated since boot */ 355 int pdbusy; /* number of times daemon found a busy page */ 356 int pdpageouts; /* number of times daemon started a pageout */ 357 int pdpending; /* number of times daemon got a pending pagout */ 358 int pddeact; /* number of pages daemon deactivates */ 359 int pdreanon; /* anon pages reactivated due to thresholds */ 360 int pdrefile; /* file pages reactivated due to thresholds */ 361 int pdreexec; /* executable pages reactivated due to thresholds */ 362}; 363 364/* 365 * The following structure is 64-bit alignment safe. New elements 366 * should only be added to the end of this structure so binary 367 * compatibility can be preserved. 368 */ 369struct uvmexp_sysctl { 370 int64_t pagesize; 371 int64_t pagemask; 372 int64_t pageshift; 373 int64_t npages; 374 int64_t free; 375 int64_t active; 376 int64_t inactive; 377 int64_t paging; 378 int64_t wired; 379 int64_t zeropages; 380 int64_t reserve_pagedaemon; 381 int64_t reserve_kernel; 382 int64_t freemin; 383 int64_t freetarg; 384 int64_t inactarg; /* unused */ 385 int64_t wiredmax; 386 int64_t nswapdev; 387 int64_t swpages; 388 int64_t swpginuse; 389 int64_t swpgonly; 390 int64_t nswget; 391 int64_t unused1; /* unused; was nanon */ 392 int64_t cpuhit; 393 int64_t cpumiss; 394 int64_t faults; 395 int64_t traps; 396 int64_t intrs; 397 int64_t swtch; 398 int64_t softs; 399 int64_t syscalls; 400 int64_t pageins; 401 int64_t swapins; /* unused */ 402 int64_t swapouts; /* unused */ 403 int64_t pgswapin; 404 int64_t pgswapout; 405 int64_t forks; 406 int64_t forks_ppwait; 407 int64_t forks_sharevm; 408 int64_t pga_zerohit; 409 int64_t pga_zeromiss; 410 int64_t zeroaborts; 411 int64_t fltnoram; 412 int64_t fltnoanon; 413 int64_t fltpgwait; 414 int64_t fltpgrele; 415 int64_t fltrelck; 416 int64_t fltrelckok; 417 int64_t fltanget; 418 int64_t fltanretry; 419 int64_t fltamcopy; 420 int64_t fltnamap; 421 int64_t fltnomap; 422 int64_t fltlget; 423 int64_t fltget; 424 int64_t flt_anon; 425 int64_t flt_acow; 426 int64_t flt_obj; 427 int64_t flt_prcopy; 428 int64_t flt_przero; 429 int64_t pdwoke; 430 int64_t pdrevs; 431 int64_t unused4; 432 int64_t pdfreed; 433 int64_t pdscans; 434 int64_t pdanscan; 435 int64_t pdobscan; 436 int64_t pdreact; 437 int64_t pdbusy; 438 int64_t pdpageouts; 439 int64_t pdpending; 440 int64_t pddeact; 441 int64_t anonpages; 442 int64_t filepages; 443 int64_t execpages; 444 int64_t colorhit; 445 int64_t colormiss; 446 int64_t ncolors; 447}; 448 449#ifdef _KERNEL 450/* we need this before including uvm_page.h on some platforms */ 451extern struct uvmexp uvmexp; 452/* MD code needs this without including <uvm/uvm.h> */ 453extern bool vm_page_zero_enable; 454#endif 455 456/* 457 * Finally, bring in standard UVM headers. 458 */ 459#include <sys/vmmeter.h> 460#include <sys/queue.h> 461#include <sys/lock.h> 462#ifdef _KERNEL 463#include <sys/vmem.h> 464#endif 465#include <uvm/uvm_param.h> 466#include <uvm/uvm_prot.h> 467#include <uvm/uvm_pmap.h> 468#include <uvm/uvm_map.h> 469#include <uvm/uvm_pager.h> 470 471/* 472 * helpers for calling ubc_release() 473 */ 474#ifdef PMAP_CACHE_VIVT 475#define UBC_WANT_UNMAP(vp) (((vp)->v_iflag & VI_TEXT) != 0) 476#else 477#define UBC_WANT_UNMAP(vp) false 478#endif 479#define UBC_UNMAP_FLAG(vp) (UBC_WANT_UNMAP(vp) ? UBC_UNMAP : 0) 480 481/* 482 * Shareable process virtual address space. 483 * May eventually be merged with vm_map. 484 * Several fields are temporary (text, data stuff). 485 */ 486struct vmspace { 487 struct vm_map vm_map; /* VM address map */ 488 int vm_refcnt; /* number of references * 489 * note: protected by vm_map.ref_lock */ 490 void * vm_shm; /* SYS5 shared memory private data XXX */ 491/* we copy from vm_startcopy to the end of the structure on fork */ 492#define vm_startcopy vm_rssize 493 segsz_t vm_rssize; /* current resident set size in pages */ 494 segsz_t vm_swrss; /* resident set size before last swap */ 495 segsz_t vm_tsize; /* text size (pages) XXX */ 496 segsz_t vm_dsize; /* data size (pages) XXX */ 497 segsz_t vm_ssize; /* stack size (pages) */ 498 segsz_t vm_issize; /* initial unmapped stack size (pages) */ 499 void * vm_taddr; /* user virtual address of text XXX */ 500 void * vm_daddr; /* user virtual address of data XXX */ 501 void *vm_maxsaddr; /* user VA at max stack growth */ 502 void *vm_minsaddr; /* user VA at top of stack */ 503 size_t vm_aslr_delta_mmap; /* mmap() random delta for ASLR */ 504}; 505#define VMSPACE_IS_KERNEL_P(vm) VM_MAP_IS_KERNEL(&(vm)->vm_map) 506 507#ifdef _KERNEL 508 509/* 510 * used to keep state while iterating over the map for a core dump. 511 */ 512struct uvm_coredump_state { 513 void *cookie; /* opaque for the caller */ 514 vaddr_t start; /* start of region */ 515 vaddr_t realend; /* real end of region */ 516 vaddr_t end; /* virtual end of region */ 517 vm_prot_t prot; /* protection of region */ 518 int flags; /* flags; see below */ 519}; 520 521#define UVM_COREDUMP_STACK 0x01 /* region is user stack */ 522 523/* 524 * the various kernel maps, owned by MD code 525 */ 526extern struct vm_map *kernel_map; 527extern struct vm_map *phys_map; 528 529/* 530 * macros 531 */ 532 533#define vm_resident_count(vm) (pmap_resident_count((vm)->vm_map.pmap)) 534 535 536/* vm_machdep.c */ 537int vmapbuf(struct buf *, vsize_t); 538void vunmapbuf(struct buf *, vsize_t); 539 540/* uvm_aobj.c */ 541struct uvm_object *uao_create(vsize_t, int); 542void uao_set_pgfl(struct uvm_object *, int); 543void uao_detach(struct uvm_object *); 544void uao_reference(struct uvm_object *); 545 546/* uvm_bio.c */ 547void ubc_init(void); 548void ubchist_init(void); 549void * ubc_alloc(struct uvm_object *, voff_t, vsize_t *, int, 550 int); 551void ubc_release(void *, int); 552int ubc_uiomove(struct uvm_object *, struct uio *, vsize_t, 553 int, int); 554void ubc_zerorange(struct uvm_object *, off_t, size_t, int); 555void ubc_purge(struct uvm_object *); 556 557/* uvm_emap.c */ 558void uvm_emap_sysinit(void); 559#ifdef __HAVE_PMAP_EMAP 560void uvm_emap_switch(lwp_t *); 561#else 562#define uvm_emap_switch(l) 563#endif 564 565u_int uvm_emap_gen_return(void); 566void uvm_emap_update(u_int); 567 568vaddr_t uvm_emap_alloc(vsize_t, bool); 569void uvm_emap_free(vaddr_t, size_t); 570 571void uvm_emap_enter(vaddr_t, struct vm_page **, u_int); 572void uvm_emap_remove(vaddr_t, vsize_t); 573 574#ifdef __HAVE_PMAP_EMAP 575void uvm_emap_consume(u_int); 576u_int uvm_emap_produce(void); 577#else 578#define uvm_emap_consume(x) 579#define uvm_emap_produce() UVM_EMAP_INACTIVE 580#endif 581 582/* uvm_fault.c */ 583#define uvm_fault(m, a, p) uvm_fault_internal(m, a, p, 0) 584int uvm_fault_internal(struct vm_map *, vaddr_t, vm_prot_t, int); 585 /* handle a page fault */ 586 587/* uvm_glue.c */ 588#if defined(KGDB) 589void uvm_chgkprot(void *, size_t, int); 590#endif 591void uvm_proc_fork(struct proc *, struct proc *, bool); 592void uvm_lwp_fork(struct lwp *, struct lwp *, 593 void *, size_t, void (*)(void *), void *); 594int uvm_coredump_walkmap(struct proc *, 595 int (*)(struct uvm_coredump_state *), void *); 596int uvm_coredump_count_segs(struct proc *); 597void uvm_proc_exit(struct proc *); 598void uvm_lwp_exit(struct lwp *); 599void uvm_init_limits(struct proc *); 600bool uvm_kernacc(void *, size_t, vm_prot_t); 601__dead void uvm_scheduler(void); 602vaddr_t uvm_uarea_alloc(void); 603void uvm_uarea_free(vaddr_t); 604vaddr_t uvm_uarea_system_alloc(struct cpu_info *); 605void uvm_uarea_system_free(vaddr_t); 606vaddr_t uvm_lwp_getuarea(lwp_t *); 607void uvm_lwp_setuarea(lwp_t *, vaddr_t); 608int uvm_vslock(struct vmspace *, void *, size_t, vm_prot_t); 609void uvm_vsunlock(struct vmspace *, void *, size_t); 610void uvm_cpu_attach(struct cpu_info *); 611 612 613/* uvm_init.c */ 614void uvm_init(void); 615 616/* uvm_io.c */ 617int uvm_io(struct vm_map *, struct uio *); 618 619/* uvm_km.c */ 620vaddr_t uvm_km_alloc(struct vm_map *, vsize_t, vsize_t, 621 uvm_flag_t); 622void uvm_km_free(struct vm_map *, vaddr_t, vsize_t, 623 uvm_flag_t); 624 625struct vm_map *uvm_km_suballoc(struct vm_map *, vaddr_t *, 626 vaddr_t *, vsize_t, int, bool, 627 struct vm_map *); 628#ifdef _KERNEL 629int uvm_km_kmem_alloc(vmem_t *, vmem_size_t, vm_flag_t, 630 vmem_addr_t *); 631void uvm_km_kmem_free(vmem_t *, vmem_addr_t, vmem_size_t); 632bool uvm_km_va_starved_p(void); 633#endif 634 635/* uvm_map.c */ 636int uvm_map(struct vm_map *, vaddr_t *, vsize_t, 637 struct uvm_object *, voff_t, vsize_t, 638 uvm_flag_t); 639int uvm_map_pageable(struct vm_map *, vaddr_t, 640 vaddr_t, bool, int); 641int uvm_map_pageable_all(struct vm_map *, int, vsize_t); 642bool uvm_map_checkprot(struct vm_map *, vaddr_t, 643 vaddr_t, vm_prot_t); 644int uvm_map_protect(struct vm_map *, vaddr_t, 645 vaddr_t, vm_prot_t, bool); 646struct vmspace *uvmspace_alloc(vaddr_t, vaddr_t, bool); 647void uvmspace_init(struct vmspace *, struct pmap *, 648 vaddr_t, vaddr_t, bool); 649void uvmspace_exec(struct lwp *, vaddr_t, vaddr_t, bool); 650void uvmspace_spawn(struct lwp *, vaddr_t, vaddr_t, bool); 651struct vmspace *uvmspace_fork(struct vmspace *); 652void uvmspace_addref(struct vmspace *); 653void uvmspace_free(struct vmspace *); 654void uvmspace_share(struct proc *, struct proc *); 655void uvmspace_unshare(struct lwp *); 656 657void uvm_whatis(uintptr_t, void (*)(const char *, ...)); 658 659/* uvm_meter.c */ 660int uvm_sysctl(int *, u_int, void *, size_t *, 661 void *, size_t, struct proc *); 662int uvm_pctparam_check(struct uvm_pctparam *, int); 663void uvm_pctparam_set(struct uvm_pctparam *, int); 664int uvm_pctparam_get(struct uvm_pctparam *); 665void uvm_pctparam_init(struct uvm_pctparam *, int, 666 int (*)(struct uvm_pctparam *, int)); 667int uvm_pctparam_createsysctlnode(struct uvm_pctparam *, 668 const char *, const char *); 669 670/* uvm_mmap.c */ 671int uvm_mmap(struct vm_map *, vaddr_t *, vsize_t, 672 vm_prot_t, vm_prot_t, int, 673 void *, voff_t, vsize_t); 674vaddr_t uvm_default_mapaddr(struct proc *, vaddr_t, vsize_t); 675 676/* uvm_mremap.c */ 677int 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 */ 682void uvm_obj_init(struct uvm_object *, 683 const struct uvm_pagerops *, bool, u_int); 684void uvm_obj_setlock(struct uvm_object *, kmutex_t *); 685void uvm_obj_destroy(struct uvm_object *, bool); 686int uvm_obj_wirepages(struct uvm_object *, off_t, off_t, 687 struct pglist *); 688void uvm_obj_unwirepages(struct uvm_object *, off_t, off_t); 689 690/* uvm_page.c */ 691struct 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) 696void uvm_pagereplace(struct vm_page *, 697 struct vm_page *); 698void uvm_pagerealloc(struct vm_page *, 699 struct uvm_object *, voff_t); 700/* Actually, uvm_page_physload takes PF#s which need their own type */ 701void uvm_page_physload(paddr_t, paddr_t, paddr_t, 702 paddr_t, int); 703void uvm_setpagesize(void); 704 705/* uvm_pager.c */ 706void uvm_aio_biodone(struct buf *); 707void uvm_aio_aiodone(struct buf *); 708void uvm_aio_aiodone_pages(struct vm_page **, int, bool, 709 int); 710 711/* uvm_pdaemon.c */ 712void uvm_pageout(void *); 713struct work; 714void uvm_aiodone_worker(struct work *, void *); 715void uvm_pageout_start(int); 716void uvm_pageout_done(int); 717void uvm_estimatepageable(int *, int *); 718 719/* uvm_pglist.c */ 720int uvm_pglistalloc(psize_t, paddr_t, paddr_t, 721 paddr_t, paddr_t, struct pglist *, int, int); 722void uvm_pglistfree(struct pglist *); 723 724/* uvm_swap.c */ 725void uvm_swap_init(void); 726 727/* uvm_unix.c */ 728int uvm_grow(struct proc *, vaddr_t); 729 730/* uvm_user.c */ 731void uvm_deallocate(struct vm_map *, vaddr_t, vsize_t); 732 733/* uvm_vnode.c */ 734void uvm_vnp_setsize(struct vnode *, voff_t); 735void uvm_vnp_setwritesize(struct vnode *, voff_t); 736int uvn_findpages(struct uvm_object *, voff_t, 737 int *, struct vm_page **, int); 738bool uvn_text_p(struct uvm_object *); 739bool uvn_clean_p(struct uvm_object *); 740bool uvn_needs_writefault_p(struct uvm_object *); 741 742/* kern_malloc.c */ 743void kmeminit_nkmempages(void); 744void kmeminit(void); 745extern int nkmempages; 746 747#endif /* _KERNEL */ 748 749#endif /* _UVM_UVM_EXTERN_H_ */ 750