uvm_extern.h revision 1.171
1 /* $NetBSD: uvm_extern.h,v 1.171 2011/02/17 19:27:13 matt 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 * typedefs, necessary for standard UVM headers. 77 */ 78 79 typedef unsigned int uvm_flag_t; 80 81 typedef int vm_inherit_t; /* XXX: inheritance codes */ 82 typedef off_t voff_t; /* XXX: offset within a uvm_object */ 83 typedef voff_t pgoff_t; /* XXX: number of pages within a uvm object */ 84 85 /* 86 * defines 87 */ 88 89 /* 90 * the following defines are for uvm_map and functions which call it. 91 */ 92 93 /* protections bits */ 94 #define UVM_PROT_MASK 0x07 /* protection mask */ 95 #define UVM_PROT_NONE 0x00 /* protection none */ 96 #define UVM_PROT_ALL 0x07 /* everything */ 97 #define UVM_PROT_READ 0x01 /* read */ 98 #define UVM_PROT_WRITE 0x02 /* write */ 99 #define UVM_PROT_EXEC 0x04 /* exec */ 100 101 /* protection short codes */ 102 #define UVM_PROT_R 0x01 /* read */ 103 #define UVM_PROT_W 0x02 /* write */ 104 #define UVM_PROT_RW 0x03 /* read-write */ 105 #define UVM_PROT_X 0x04 /* exec */ 106 #define UVM_PROT_RX 0x05 /* read-exec */ 107 #define UVM_PROT_WX 0x06 /* write-exec */ 108 #define UVM_PROT_RWX 0x07 /* read-write-exec */ 109 110 /* 0x08: not used */ 111 112 /* inherit codes */ 113 #define UVM_INH_MASK 0x30 /* inherit mask */ 114 #define UVM_INH_SHARE 0x00 /* "share" */ 115 #define UVM_INH_COPY 0x10 /* "copy" */ 116 #define UVM_INH_NONE 0x20 /* "none" */ 117 #define UVM_INH_DONATE 0x30 /* "donate" << not used */ 118 119 /* 0x40, 0x80: not used */ 120 121 /* bits 0x700: max protection, 0x800: not used */ 122 123 /* bits 0x7000: advice, 0x8000: not used */ 124 /* advice: matches MADV_* from sys/mman.h and POSIX_FADV_* from sys/fcntl.h */ 125 #define UVM_ADV_NORMAL 0x0 /* 'normal' */ 126 #define UVM_ADV_RANDOM 0x1 /* 'random' */ 127 #define UVM_ADV_SEQUENTIAL 0x2 /* 'sequential' */ 128 #define UVM_ADV_WILLNEED 0x3 /* pages will be needed */ 129 #define UVM_ADV_DONTNEED 0x4 /* pages won't be needed */ 130 #define UVM_ADV_NOREUSE 0x5 /* pages will be used only once */ 131 #define UVM_ADV_MASK 0x7 /* mask */ 132 133 /* bits 0xffff0000: mapping flags */ 134 #define UVM_FLAG_FIXED 0x010000 /* find space */ 135 #define UVM_FLAG_OVERLAY 0x020000 /* establish overlay */ 136 #define UVM_FLAG_NOMERGE 0x040000 /* don't merge map entries */ 137 #define UVM_FLAG_COPYONW 0x080000 /* set copy_on_write flag */ 138 #define UVM_FLAG_AMAPPAD 0x100000 /* for bss: pad amap to reduce malloc() */ 139 #define UVM_FLAG_TRYLOCK 0x200000 /* fail if we can not lock map */ 140 #define UVM_FLAG_NOWAIT 0x400000 /* not allowed to sleep */ 141 #define UVM_FLAG_QUANTUM 0x800000 /* entry can never be split later */ 142 #define UVM_FLAG_WAITVA 0x1000000 /* wait for va */ 143 #define UVM_FLAG_VAONLY 0x2000000 /* unmap: no pages are mapped */ 144 #define UVM_FLAG_COLORMATCH 0x4000000 /* match color given in off */ 145 146 /* macros to extract info */ 147 #define UVM_PROTECTION(X) ((X) & UVM_PROT_MASK) 148 #define UVM_INHERIT(X) (((X) & UVM_INH_MASK) >> 4) 149 #define UVM_MAXPROTECTION(X) (((X) >> 8) & UVM_PROT_MASK) 150 #define UVM_ADVICE(X) (((X) >> 12) & UVM_ADV_MASK) 151 152 #define UVM_MAPFLAG(PROT,MAXPROT,INH,ADVICE,FLAGS) \ 153 (((MAXPROT) << 8)|(PROT)|(INH)|((ADVICE) << 12)|(FLAGS)) 154 155 /* magic offset value: offset not known(obj) or don't care(!obj) */ 156 #define UVM_UNKNOWN_OFFSET ((voff_t) -1) 157 158 /* 159 * the following defines are for uvm_km_alloc/free's flags 160 */ 161 #define UVM_KMF_WIRED 0x1 /* allocation type: wired */ 162 #define UVM_KMF_PAGEABLE 0x2 /* allocation type: pageable */ 163 #define UVM_KMF_VAONLY 0x4 /* allocation type: VA only */ 164 #define UVM_KMF_TYPEMASK (UVM_KMF_VAONLY | UVM_KMF_PAGEABLE | UVM_KMF_WIRED) 165 #define UVM_KMF_CANFAIL 0x8 /* caller handles failure */ 166 #define UVM_KMF_ZERO 0x10 /* want zero filled memory */ 167 #define UVM_KMF_EXEC 0x20 /* need executable mapping */ 168 #define UVM_KMF_TRYLOCK UVM_FLAG_TRYLOCK /* try locking only */ 169 #define UVM_KMF_NOWAIT UVM_FLAG_NOWAIT /* not allowed to sleep */ 170 #define UVM_KMF_WAITVA UVM_FLAG_WAITVA /* sleep for va */ 171 172 /* 173 * the following defines the strategies for uvm_pagealloc_strat() 174 */ 175 #define UVM_PGA_STRAT_NORMAL 0 /* priority (low id to high) walk */ 176 #define UVM_PGA_STRAT_ONLY 1 /* only specified free list */ 177 #define UVM_PGA_STRAT_FALLBACK 2 /* ONLY falls back on NORMAL */ 178 179 /* 180 * flags for uvm_pagealloc_strat() 181 */ 182 #define UVM_PGA_USERESERVE 0x0001 /* ok to use reserve pages */ 183 #define UVM_PGA_ZERO 0x0002 /* returned page must be zero'd */ 184 185 /* 186 * flags for ubc_alloc() 187 */ 188 #define UBC_READ 0x001 189 #define UBC_WRITE 0x002 190 #define UBC_FAULTBUSY 0x004 191 192 /* 193 * flags for ubc_release() 194 */ 195 #define UBC_UNMAP 0x010 196 197 /* 198 * flags for ubc_uiomve() 199 */ 200 #define UBC_PARTIALOK 0x100 201 202 /* 203 * flags for uvn_findpages(). 204 */ 205 #define UFP_ALL 0x00 206 #define UFP_NOWAIT 0x01 207 #define UFP_NOALLOC 0x02 208 #define UFP_NOCACHE 0x04 209 #define UFP_NORDONLY 0x08 210 #define UFP_DIRTYONLY 0x10 211 #define UFP_BACKWARD 0x20 212 213 /* 214 * lockflags that control the locking behavior of various functions. 215 */ 216 #define UVM_LK_ENTER 0x00000001 /* map locked on entry */ 217 #define UVM_LK_EXIT 0x00000002 /* leave map locked on exit */ 218 219 /* 220 * Default number of pages to allocate on the stack 221 */ 222 #define UBC_MAX_PAGES 8 223 224 /* 225 * Value representing inactive emap. 226 */ 227 #define UVM_EMAP_INACTIVE (0) 228 229 /* 230 * structures 231 */ 232 233 struct buf; 234 struct core; 235 struct loadavg; 236 struct mount; 237 struct pglist; 238 struct proc; 239 struct uio; 240 struct uvm_object; 241 struct vm_anon; 242 struct vmspace; 243 struct pmap; 244 struct vnode; 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 _unused_faults; /* page fault count */ 312 int _unused_traps; /* trap count */ 313 int _unused_intrs; /* interrupt count */ 314 int _unused_swtch; /* context switch count */ 315 int _unused_softs; /* software interrupt count */ 316 int _unused_syscalls; /* system calls */ 317 int pageins; /* pagein operation count */ 318 /* pageouts are in pdpageouts below */ 319 int _unused1; 320 int _unused2; 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 _unused3; 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; /* unused; was 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; /* unused */ 413 int64_t swapouts; /* unused */ 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 unused4; 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 /* MD code needs this without including <uvm/uvm.h> */ 464 extern bool vm_page_zero_enable; 465 #endif 466 467 /* 468 * Finally, bring in standard UVM headers. 469 */ 470 #include <sys/vmmeter.h> 471 #include <sys/queue.h> 472 #include <sys/lock.h> 473 #include <uvm/uvm_param.h> 474 #include <uvm/uvm_prot.h> 475 #include <uvm/uvm_pmap.h> 476 #include <uvm/uvm_map.h> 477 #include <uvm/uvm_pager.h> 478 479 /* 480 * helpers for calling ubc_release() 481 */ 482 #ifdef PMAP_CACHE_VIVT 483 #define UBC_WANT_UNMAP(vp) (((vp)->v_iflag & VI_TEXT) != 0) 484 #else 485 #define UBC_WANT_UNMAP(vp) false 486 #endif 487 #define UBC_UNMAP_FLAG(vp) (UBC_WANT_UNMAP(vp) ? UBC_UNMAP : 0) 488 489 /* 490 * Shareable process virtual address space. 491 * May eventually be merged with vm_map. 492 * Several fields are temporary (text, data stuff). 493 */ 494 struct vmspace { 495 struct vm_map vm_map; /* VM address map */ 496 int vm_refcnt; /* number of references * 497 * note: protected by vm_map.ref_lock */ 498 void * vm_shm; /* SYS5 shared memory private data XXX */ 499 /* we copy from vm_startcopy to the end of the structure on fork */ 500 #define vm_startcopy vm_rssize 501 segsz_t vm_rssize; /* current resident set size in pages */ 502 segsz_t vm_swrss; /* resident set size before last swap */ 503 segsz_t vm_tsize; /* text size (pages) XXX */ 504 segsz_t vm_dsize; /* data size (pages) XXX */ 505 segsz_t vm_ssize; /* stack size (pages) */ 506 segsz_t vm_issize; /* initial unmapped stack size (pages) */ 507 void * vm_taddr; /* user virtual address of text XXX */ 508 void * vm_daddr; /* user virtual address of data XXX */ 509 void *vm_maxsaddr; /* user VA at max stack growth */ 510 void *vm_minsaddr; /* user VA at top of stack */ 511 size_t vm_aslr_delta_mmap; /* mmap() random delta for ASLR */ 512 }; 513 #define VMSPACE_IS_KERNEL_P(vm) VM_MAP_IS_KERNEL(&(vm)->vm_map) 514 515 #ifdef _KERNEL 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 * Structure containig uvm reclaim hooks, uvm_reclaim_list is guarded by 533 * uvm_reclaim_lock. 534 */ 535 struct uvm_reclaim_hook { 536 void (*uvm_reclaim_hook)(void); 537 SLIST_ENTRY(uvm_reclaim_hook) uvm_reclaim_next; 538 }; 539 540 void uvm_reclaim_init(void); 541 void uvm_reclaim_hook_add(struct uvm_reclaim_hook *); 542 void uvm_reclaim_hook_del(struct uvm_reclaim_hook *); 543 544 /* 545 * the various kernel maps, owned by MD code 546 */ 547 extern struct vm_map *kernel_map; 548 extern struct vm_map *kmem_map; 549 extern struct vm_map *phys_map; 550 551 /* 552 * macros 553 */ 554 555 #define vm_resident_count(vm) (pmap_resident_count((vm)->vm_map.pmap)) 556 557 #include <sys/mallocvar.h> 558 MALLOC_DECLARE(M_VMMAP); 559 MALLOC_DECLARE(M_VMPMAP); 560 561 /* vm_machdep.c */ 562 int vmapbuf(struct buf *, vsize_t); 563 void vunmapbuf(struct buf *, vsize_t); 564 565 /* uvm_aobj.c */ 566 struct uvm_object *uao_create(vsize_t, int); 567 void uao_detach(struct uvm_object *); 568 void uao_reference(struct uvm_object *); 569 570 /* uvm_bio.c */ 571 void ubc_init(void); 572 void * ubc_alloc(struct uvm_object *, voff_t, vsize_t *, int, 573 int); 574 void ubc_release(void *, int); 575 int ubc_uiomove(struct uvm_object *, struct uio *, vsize_t, 576 int, int); 577 578 /* uvm_emap.c */ 579 void uvm_emap_sysinit(void); 580 #ifdef __HAVE_PMAP_EMAP 581 void uvm_emap_switch(lwp_t *); 582 #else 583 #define uvm_emap_switch(l) 584 #endif 585 586 u_int uvm_emap_gen_return(void); 587 void uvm_emap_update(u_int); 588 589 vaddr_t uvm_emap_alloc(vsize_t, bool); 590 void uvm_emap_free(vaddr_t, size_t); 591 592 void uvm_emap_enter(vaddr_t, struct vm_page **, u_int); 593 void uvm_emap_remove(vaddr_t, vsize_t); 594 595 #ifdef __HAVE_PMAP_EMAP 596 void uvm_emap_consume(u_int); 597 u_int uvm_emap_produce(void); 598 #else 599 #define uvm_emap_consume(x) 600 #define uvm_emap_produce() UVM_EMAP_INACTIVE 601 #endif 602 603 /* uvm_fault.c */ 604 #define uvm_fault(m, a, p) uvm_fault_internal(m, a, p, 0) 605 int uvm_fault_internal(struct vm_map *, vaddr_t, vm_prot_t, int); 606 /* handle a page fault */ 607 608 /* uvm_glue.c */ 609 #if defined(KGDB) 610 void uvm_chgkprot(void *, size_t, int); 611 #endif 612 void uvm_proc_fork(struct proc *, struct proc *, bool); 613 void uvm_lwp_fork(struct lwp *, struct lwp *, 614 void *, size_t, void (*)(void *), void *); 615 int uvm_coredump_walkmap(struct proc *, 616 void *, 617 int (*)(struct proc *, void *, 618 struct uvm_coredump_state *), void *); 619 void uvm_proc_exit(struct proc *); 620 void uvm_lwp_exit(struct lwp *); 621 void uvm_init_limits(struct proc *); 622 bool uvm_kernacc(void *, size_t, int); 623 __dead void uvm_scheduler(void); 624 vaddr_t uvm_uarea_alloc(void); 625 void uvm_uarea_free(vaddr_t); 626 vaddr_t uvm_uarea_system_alloc(void); 627 void uvm_uarea_system_free(vaddr_t); 628 vaddr_t uvm_lwp_getuarea(lwp_t *); 629 void uvm_lwp_setuarea(lwp_t *, vaddr_t); 630 int uvm_vslock(struct vmspace *, void *, size_t, vm_prot_t); 631 void uvm_vsunlock(struct vmspace *, void *, size_t); 632 void uvm_cpu_attach(struct cpu_info *); 633 634 635 /* uvm_init.c */ 636 void uvm_init(void); 637 638 /* uvm_io.c */ 639 int uvm_io(struct vm_map *, struct uio *); 640 641 /* uvm_km.c */ 642 vaddr_t uvm_km_alloc(struct vm_map *, vsize_t, vsize_t, 643 uvm_flag_t); 644 void uvm_km_free(struct vm_map *, vaddr_t, vsize_t, 645 uvm_flag_t); 646 647 struct vm_map *uvm_km_suballoc(struct vm_map *, vaddr_t *, 648 vaddr_t *, vsize_t, int, bool, 649 struct vm_map_kernel *); 650 vaddr_t uvm_km_alloc_poolpage(struct vm_map *, bool); 651 void uvm_km_free_poolpage(struct vm_map *, vaddr_t); 652 vaddr_t uvm_km_alloc_poolpage_cache(struct vm_map *, bool); 653 void uvm_km_free_poolpage_cache(struct vm_map *, vaddr_t); 654 void uvm_km_vacache_init(struct vm_map *, 655 const char *, size_t); 656 657 /* uvm_map.c */ 658 int uvm_map(struct vm_map *, vaddr_t *, vsize_t, 659 struct uvm_object *, voff_t, vsize_t, 660 uvm_flag_t); 661 int uvm_map_pageable(struct vm_map *, vaddr_t, 662 vaddr_t, bool, int); 663 int uvm_map_pageable_all(struct vm_map *, int, vsize_t); 664 bool uvm_map_checkprot(struct vm_map *, vaddr_t, 665 vaddr_t, vm_prot_t); 666 int uvm_map_protect(struct vm_map *, vaddr_t, 667 vaddr_t, vm_prot_t, bool); 668 struct vmspace *uvmspace_alloc(vaddr_t, vaddr_t); 669 void uvmspace_init(struct vmspace *, struct pmap *, 670 vaddr_t, vaddr_t); 671 void uvmspace_exec(struct lwp *, vaddr_t, vaddr_t); 672 struct vmspace *uvmspace_fork(struct vmspace *); 673 void uvmspace_addref(struct vmspace *); 674 void uvmspace_free(struct vmspace *); 675 void uvmspace_share(struct proc *, struct proc *); 676 void uvmspace_unshare(struct lwp *); 677 678 void uvm_whatis(uintptr_t, void (*)(const char *, ...)); 679 680 /* uvm_meter.c */ 681 int uvm_sysctl(int *, u_int, void *, size_t *, 682 void *, size_t, struct proc *); 683 int uvm_pctparam_check(struct uvm_pctparam *, int); 684 void uvm_pctparam_set(struct uvm_pctparam *, int); 685 int uvm_pctparam_get(struct uvm_pctparam *); 686 void uvm_pctparam_init(struct uvm_pctparam *, int, 687 int (*)(struct uvm_pctparam *, int)); 688 int uvm_pctparam_createsysctlnode(struct uvm_pctparam *, 689 const char *, const char *); 690 691 /* uvm_mmap.c */ 692 int uvm_mmap(struct vm_map *, vaddr_t *, vsize_t, 693 vm_prot_t, vm_prot_t, int, 694 void *, voff_t, vsize_t); 695 vaddr_t uvm_default_mapaddr(struct proc *, vaddr_t, vsize_t); 696 697 /* uvm_mremap.c */ 698 int uvm_mremap(struct vm_map *, vaddr_t, vsize_t, 699 struct vm_map *, vaddr_t *, vsize_t, 700 struct proc *, int); 701 702 /* uvm_object.c */ 703 int uobj_wirepages(struct uvm_object *uobj, off_t start, 704 off_t end); 705 void uobj_unwirepages(struct uvm_object *uobj, off_t start, 706 off_t end); 707 708 /* uvm_page.c */ 709 struct vm_page *uvm_pagealloc_strat(struct uvm_object *, 710 voff_t, struct vm_anon *, int, int, int); 711 #define uvm_pagealloc(obj, off, anon, flags) \ 712 uvm_pagealloc_strat((obj), (off), (anon), (flags), \ 713 UVM_PGA_STRAT_NORMAL, 0) 714 void uvm_pagereplace(struct vm_page *, 715 struct vm_page *); 716 void uvm_pagerealloc(struct vm_page *, 717 struct uvm_object *, voff_t); 718 /* Actually, uvm_page_physload takes PF#s which need their own type */ 719 void uvm_page_physload(paddr_t, paddr_t, paddr_t, 720 paddr_t, int); 721 void uvm_setpagesize(void); 722 723 /* uvm_pager.c */ 724 void uvm_aio_biodone(struct buf *); 725 void uvm_aio_aiodone(struct buf *); 726 void uvm_aio_aiodone_pages(struct vm_page **, int, bool, 727 int); 728 729 /* uvm_pdaemon.c */ 730 void uvm_pageout(void *); 731 struct work; 732 void uvm_aiodone_worker(struct work *, void *); 733 void uvm_pageout_start(int); 734 void uvm_pageout_done(int); 735 void uvm_estimatepageable(int *, int *); 736 737 /* uvm_pglist.c */ 738 int uvm_pglistalloc(psize_t, paddr_t, paddr_t, 739 paddr_t, paddr_t, struct pglist *, int, int); 740 void uvm_pglistfree(struct pglist *); 741 742 /* uvm_swap.c */ 743 void uvm_swap_init(void); 744 745 /* uvm_unix.c */ 746 int uvm_grow(struct proc *, vaddr_t); 747 748 /* uvm_user.c */ 749 void uvm_deallocate(struct vm_map *, vaddr_t, vsize_t); 750 751 /* uvm_vnode.c */ 752 void uvm_vnp_setsize(struct vnode *, voff_t); 753 void uvm_vnp_setwritesize(struct vnode *, voff_t); 754 int uvn_findpages(struct uvm_object *, voff_t, 755 int *, struct vm_page **, int); 756 void uvm_vnp_zerorange(struct vnode *, off_t, size_t); 757 bool uvn_text_p(struct uvm_object *); 758 bool uvn_clean_p(struct uvm_object *); 759 bool uvn_needs_writefault_p(struct uvm_object *); 760 761 /* kern_malloc.c */ 762 void kmeminit_nkmempages(void); 763 void kmeminit(void); 764 extern int nkmempages; 765 766 #endif /* _KERNEL */ 767 768 #endif /* _UVM_UVM_EXTERN_H_ */ 769
Indexes created Sat Sep 20 22:09:52 GMT 2025