uvm_extern.h revision 1.176
1 /* $NetBSD: uvm_extern.h,v 1.176 2011/09/01 06:40:28 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 allocations */ 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 #define UVM_KMF_COLORMATCH UVM_FLAG_COLORMATCH /* start at color in align */ 172 173 /* 174 * the following defines the strategies for uvm_pagealloc_strat() 175 */ 176 #define UVM_PGA_STRAT_NORMAL 0 /* priority (low id to high) walk */ 177 #define UVM_PGA_STRAT_ONLY 1 /* only specified free list */ 178 #define UVM_PGA_STRAT_FALLBACK 2 /* ONLY falls back on NORMAL */ 179 180 /* 181 * flags for uvm_pagealloc_strat() 182 */ 183 #define UVM_PGA_USERESERVE 0x0001 /* ok to use reserve pages */ 184 #define UVM_PGA_ZERO 0x0002 /* returned page must be zero'd */ 185 186 /* 187 * flags for ubc_alloc() 188 */ 189 #define UBC_READ 0x001 190 #define UBC_WRITE 0x002 191 #define UBC_FAULTBUSY 0x004 192 193 /* 194 * flags for ubc_release() 195 */ 196 #define UBC_UNMAP 0x010 197 198 /* 199 * flags for ubc_uiomve() 200 */ 201 #define UBC_PARTIALOK 0x100 202 203 /* 204 * flags for uvn_findpages(). 205 */ 206 #define UFP_ALL 0x00 207 #define UFP_NOWAIT 0x01 208 #define UFP_NOALLOC 0x02 209 #define UFP_NOCACHE 0x04 210 #define UFP_NORDONLY 0x08 211 #define UFP_DIRTYONLY 0x10 212 #define UFP_BACKWARD 0x20 213 214 /* 215 * lockflags that control the locking behavior of various functions. 216 */ 217 #define UVM_LK_ENTER 0x00000001 /* map locked on entry */ 218 #define UVM_LK_EXIT 0x00000002 /* leave map locked on exit */ 219 220 /* 221 * Default number of pages to allocate on the stack 222 */ 223 #define UBC_MAX_PAGES 8 224 225 /* 226 * Value representing inactive emap. 227 */ 228 #define UVM_EMAP_INACTIVE (0) 229 230 /* 231 * structures 232 */ 233 234 struct buf; 235 struct core; 236 struct loadavg; 237 struct mount; 238 struct pglist; 239 struct proc; 240 struct uio; 241 struct uvm_object; 242 struct vm_anon; 243 struct vmspace; 244 struct pmap; 245 struct vnode; 246 struct simplelock; 247 struct vm_map_entry; 248 struct vm_map; 249 struct vm_page; 250 struct vmtotal; 251 252 /* 253 * uvm_pctparam: parameter to be shown as percentage to user. 254 */ 255 256 #define UVM_PCTPARAM_SHIFT 8 257 #define UVM_PCTPARAM_SCALE (1 << UVM_PCTPARAM_SHIFT) 258 #define UVM_PCTPARAM_APPLY(pct, x) \ 259 (((x) * (pct)->pct_scaled) >> UVM_PCTPARAM_SHIFT) 260 struct uvm_pctparam { 261 int pct_pct; /* percent [0, 100] */ /* should be the first member */ 262 int pct_scaled; 263 int (*pct_check)(struct uvm_pctparam *, int); 264 }; 265 266 /* 267 * uvmexp: global data structures that are exported to parts of the kernel 268 * other than the vm system. 269 */ 270 271 struct uvmexp { 272 /* vm_page constants */ 273 int pagesize; /* size of a page (PAGE_SIZE): must be power of 2 */ 274 int pagemask; /* page mask */ 275 int pageshift; /* page shift */ 276 277 /* vm_page counters */ 278 int npages; /* number of pages we manage */ 279 int free; /* number of free pages */ 280 int paging; /* number of pages in the process of being paged out */ 281 int wired; /* number of wired pages */ 282 283 /* 284 * Adding anything before this line will break binary compatibility 285 * with top(1) on NetBSD 1.5. 286 */ 287 288 int ncolors; /* number of page color buckets: must be p-o-2 */ 289 int colormask; /* color bucket mask */ 290 291 int zeropages; /* number of zero'd pages */ 292 int reserve_pagedaemon; /* number of pages reserved for pagedaemon */ 293 int reserve_kernel; /* number of pages reserved for kernel */ 294 unsigned anonpages; /* number of pages used by anon mappings */ 295 unsigned filepages; /* number of pages used by cached file data */ 296 unsigned execpages; /* number of pages used by cached exec data */ 297 298 /* pageout params */ 299 int freemin; /* min number of free pages */ 300 int freetarg; /* target number of free pages */ 301 int wiredmax; /* max number of wired pages */ 302 303 /* swap */ 304 int nswapdev; /* number of configured swap devices in system */ 305 int swpages; /* number of PAGE_SIZE'ed swap pages */ 306 int swpgavail; /* number of swap pages currently available */ 307 int swpginuse; /* number of swap pages in use */ 308 int swpgonly; /* number of swap pages in use, not also in RAM */ 309 int nswget; /* number of times fault calls uvm_swap_get() */ 310 311 /* stat counters. XXX: should be 64-bit counters */ 312 int _unused_faults; /* page fault count */ 313 int _unused_traps; /* trap count */ 314 int _unused_intrs; /* interrupt count */ 315 int _unused_swtch; /* context switch count */ 316 int _unused_softs; /* software interrupt count */ 317 int _unused_syscalls; /* system calls */ 318 int pageins; /* pagein operation count */ 319 /* pageouts are in pdpageouts below */ 320 int _unused1; 321 int _unused2; 322 int pgswapin; /* pages swapped in */ 323 int pgswapout; /* pages swapped out */ 324 int forks; /* forks */ 325 int forks_ppwait; /* forks where parent waits */ 326 int forks_sharevm; /* forks where vmspace is shared */ 327 int pga_zerohit; /* pagealloc where zero wanted and zero 328 was available */ 329 int pga_zeromiss; /* pagealloc where zero wanted and zero 330 not available */ 331 int zeroaborts; /* number of times page zeroing was 332 aborted */ 333 int colorhit; /* pagealloc where we got optimal color */ 334 int colormiss; /* pagealloc where we didn't */ 335 int cpuhit; /* pagealloc where we allocated locally */ 336 int cpumiss; /* pagealloc where we didn't */ 337 338 /* fault subcounters. XXX: should be 64-bit counters */ 339 int fltnoram; /* number of times fault was out of ram */ 340 int fltnoanon; /* number of times fault was out of anons */ 341 int fltpgwait; /* number of times fault had to wait on a page */ 342 int fltpgrele; /* number of times fault found a released page */ 343 int fltrelck; /* number of times fault relock called */ 344 int fltrelckok; /* number of times fault relock is a success */ 345 int fltanget; /* number of times fault gets anon page */ 346 int fltanretry; /* number of times fault retrys an anon get */ 347 int fltamcopy; /* number of times fault clears "needs copy" */ 348 int fltnamap; /* number of times fault maps a neighbor anon page */ 349 int fltnomap; /* number of times fault maps a neighbor obj page */ 350 int fltlget; /* number of times fault does a locked pgo_get */ 351 int fltget; /* number of times fault does an unlocked get */ 352 int flt_anon; /* number of times fault anon (case 1a) */ 353 int flt_acow; /* number of times fault anon cow (case 1b) */ 354 int flt_obj; /* number of times fault is on object page (2a) */ 355 int flt_prcopy; /* number of times fault promotes with copy (2b) */ 356 int flt_przero; /* number of times fault promotes with zerofill (2b) */ 357 358 /* daemon counters. XXX: should be 64-bit counters */ 359 int pdwoke; /* number of times daemon woke up */ 360 int pdrevs; /* number of times daemon rev'd clock hand */ 361 int _unused3; 362 int pdfreed; /* number of pages daemon freed since boot */ 363 int pdscans; /* number of pages daemon scanned since boot */ 364 int pdanscan; /* number of anonymous pages scanned by daemon */ 365 int pdobscan; /* number of object pages scanned by daemon */ 366 int pdreact; /* number of pages daemon reactivated since boot */ 367 int pdbusy; /* number of times daemon found a busy page */ 368 int pdpageouts; /* number of times daemon started a pageout */ 369 int pdpending; /* number of times daemon got a pending pagout */ 370 int pddeact; /* number of pages daemon deactivates */ 371 int pdreanon; /* anon pages reactivated due to thresholds */ 372 int pdrefile; /* file pages reactivated due to thresholds */ 373 int pdreexec; /* executable pages reactivated due to thresholds */ 374 }; 375 376 /* 377 * The following structure is 64-bit alignment safe. New elements 378 * should only be added to the end of this structure so binary 379 * compatibility can be preserved. 380 */ 381 struct uvmexp_sysctl { 382 int64_t pagesize; 383 int64_t pagemask; 384 int64_t pageshift; 385 int64_t npages; 386 int64_t free; 387 int64_t active; 388 int64_t inactive; 389 int64_t paging; 390 int64_t wired; 391 int64_t zeropages; 392 int64_t reserve_pagedaemon; 393 int64_t reserve_kernel; 394 int64_t freemin; 395 int64_t freetarg; 396 int64_t inactarg; /* unused */ 397 int64_t wiredmax; 398 int64_t nswapdev; 399 int64_t swpages; 400 int64_t swpginuse; 401 int64_t swpgonly; 402 int64_t nswget; 403 int64_t unused1; /* unused; was nanon */ 404 int64_t cpuhit; 405 int64_t cpumiss; 406 int64_t faults; 407 int64_t traps; 408 int64_t intrs; 409 int64_t swtch; 410 int64_t softs; 411 int64_t syscalls; 412 int64_t pageins; 413 int64_t swapins; /* unused */ 414 int64_t swapouts; /* unused */ 415 int64_t pgswapin; 416 int64_t pgswapout; 417 int64_t forks; 418 int64_t forks_ppwait; 419 int64_t forks_sharevm; 420 int64_t pga_zerohit; 421 int64_t pga_zeromiss; 422 int64_t zeroaborts; 423 int64_t fltnoram; 424 int64_t fltnoanon; 425 int64_t fltpgwait; 426 int64_t fltpgrele; 427 int64_t fltrelck; 428 int64_t fltrelckok; 429 int64_t fltanget; 430 int64_t fltanretry; 431 int64_t fltamcopy; 432 int64_t fltnamap; 433 int64_t fltnomap; 434 int64_t fltlget; 435 int64_t fltget; 436 int64_t flt_anon; 437 int64_t flt_acow; 438 int64_t flt_obj; 439 int64_t flt_prcopy; 440 int64_t flt_przero; 441 int64_t pdwoke; 442 int64_t pdrevs; 443 int64_t unused4; 444 int64_t pdfreed; 445 int64_t pdscans; 446 int64_t pdanscan; 447 int64_t pdobscan; 448 int64_t pdreact; 449 int64_t pdbusy; 450 int64_t pdpageouts; 451 int64_t pdpending; 452 int64_t pddeact; 453 int64_t anonpages; 454 int64_t filepages; 455 int64_t execpages; 456 int64_t colorhit; 457 int64_t colormiss; 458 int64_t ncolors; 459 }; 460 461 #ifdef _KERNEL 462 /* we need this before including uvm_page.h on some platforms */ 463 extern struct uvmexp uvmexp; 464 /* MD code needs this without including <uvm/uvm.h> */ 465 extern bool vm_page_zero_enable; 466 #endif 467 468 /* 469 * Finally, bring in standard UVM headers. 470 */ 471 #include <sys/vmmeter.h> 472 #include <sys/queue.h> 473 #include <sys/lock.h> 474 #include <uvm/uvm_param.h> 475 #include <uvm/uvm_prot.h> 476 #include <uvm/uvm_pmap.h> 477 #include <uvm/uvm_map.h> 478 #include <uvm/uvm_pager.h> 479 480 /* 481 * helpers for calling ubc_release() 482 */ 483 #ifdef PMAP_CACHE_VIVT 484 #define UBC_WANT_UNMAP(vp) (((vp)->v_iflag & VI_TEXT) != 0) 485 #else 486 #define UBC_WANT_UNMAP(vp) false 487 #endif 488 #define UBC_UNMAP_FLAG(vp) (UBC_WANT_UNMAP(vp) ? UBC_UNMAP : 0) 489 490 /* 491 * Shareable process virtual address space. 492 * May eventually be merged with vm_map. 493 * Several fields are temporary (text, data stuff). 494 */ 495 struct vmspace { 496 struct vm_map vm_map; /* VM address map */ 497 int vm_refcnt; /* number of references * 498 * note: protected by vm_map.ref_lock */ 499 void * vm_shm; /* SYS5 shared memory private data XXX */ 500 /* we copy from vm_startcopy to the end of the structure on fork */ 501 #define vm_startcopy vm_rssize 502 segsz_t vm_rssize; /* current resident set size in pages */ 503 segsz_t vm_swrss; /* resident set size before last swap */ 504 segsz_t vm_tsize; /* text size (pages) XXX */ 505 segsz_t vm_dsize; /* data size (pages) XXX */ 506 segsz_t vm_ssize; /* stack size (pages) */ 507 segsz_t vm_issize; /* initial unmapped stack size (pages) */ 508 void * vm_taddr; /* user virtual address of text XXX */ 509 void * vm_daddr; /* user virtual address of data XXX */ 510 void *vm_maxsaddr; /* user VA at max stack growth */ 511 void *vm_minsaddr; /* user VA at top of stack */ 512 size_t vm_aslr_delta_mmap; /* mmap() random delta for ASLR */ 513 }; 514 #define VMSPACE_IS_KERNEL_P(vm) VM_MAP_IS_KERNEL(&(vm)->vm_map) 515 516 #ifdef _KERNEL 517 518 /* 519 * used to keep state while iterating over the map for a core dump. 520 */ 521 struct uvm_coredump_state { 522 void *cookie; /* opaque for the caller */ 523 vaddr_t start; /* start of region */ 524 vaddr_t realend; /* real end of region */ 525 vaddr_t end; /* virtual end of region */ 526 vm_prot_t prot; /* protection of region */ 527 int flags; /* flags; see below */ 528 }; 529 530 #define UVM_COREDUMP_STACK 0x01 /* region is user stack */ 531 532 /* 533 * Structure containig uvm reclaim hooks, uvm_reclaim_list is guarded by 534 * uvm_reclaim_lock. 535 */ 536 struct uvm_reclaim_hook { 537 void (*uvm_reclaim_hook)(void); 538 SLIST_ENTRY(uvm_reclaim_hook) uvm_reclaim_next; 539 }; 540 541 void uvm_reclaim_init(void); 542 void uvm_reclaim_hook_add(struct uvm_reclaim_hook *); 543 void uvm_reclaim_hook_del(struct uvm_reclaim_hook *); 544 545 /* 546 * the various kernel maps, owned by MD code 547 */ 548 extern struct vm_map *kernel_map; 549 extern struct vm_map *kmem_map; 550 extern struct vm_map *phys_map; 551 552 /* 553 * macros 554 */ 555 556 #define vm_resident_count(vm) (pmap_resident_count((vm)->vm_map.pmap)) 557 558 #include <sys/mallocvar.h> 559 MALLOC_DECLARE(M_VMMAP); 560 MALLOC_DECLARE(M_VMPMAP); 561 562 /* vm_machdep.c */ 563 int vmapbuf(struct buf *, vsize_t); 564 void vunmapbuf(struct buf *, vsize_t); 565 566 /* uvm_aobj.c */ 567 struct uvm_object *uao_create(vsize_t, int); 568 void uao_detach(struct uvm_object *); 569 void uao_reference(struct uvm_object *); 570 571 /* uvm_bio.c */ 572 void ubc_init(void); 573 void * ubc_alloc(struct uvm_object *, voff_t, vsize_t *, int, 574 int); 575 void ubc_release(void *, int); 576 int ubc_uiomove(struct uvm_object *, struct uio *, vsize_t, 577 int, int); 578 void ubc_zerorange(struct uvm_object *, off_t, size_t, int); 579 void ubc_purge(struct uvm_object *); 580 581 /* uvm_emap.c */ 582 void uvm_emap_sysinit(void); 583 #ifdef __HAVE_PMAP_EMAP 584 void uvm_emap_switch(lwp_t *); 585 #else 586 #define uvm_emap_switch(l) 587 #endif 588 589 u_int uvm_emap_gen_return(void); 590 void uvm_emap_update(u_int); 591 592 vaddr_t uvm_emap_alloc(vsize_t, bool); 593 void uvm_emap_free(vaddr_t, size_t); 594 595 void uvm_emap_enter(vaddr_t, struct vm_page **, u_int); 596 void uvm_emap_remove(vaddr_t, vsize_t); 597 598 #ifdef __HAVE_PMAP_EMAP 599 void uvm_emap_consume(u_int); 600 u_int uvm_emap_produce(void); 601 #else 602 #define uvm_emap_consume(x) 603 #define uvm_emap_produce() UVM_EMAP_INACTIVE 604 #endif 605 606 /* uvm_fault.c */ 607 #define uvm_fault(m, a, p) uvm_fault_internal(m, a, p, 0) 608 int uvm_fault_internal(struct vm_map *, vaddr_t, vm_prot_t, int); 609 /* handle a page fault */ 610 611 /* uvm_glue.c */ 612 #if defined(KGDB) 613 void uvm_chgkprot(void *, size_t, int); 614 #endif 615 void uvm_proc_fork(struct proc *, struct proc *, bool); 616 void uvm_lwp_fork(struct lwp *, struct lwp *, 617 void *, size_t, void (*)(void *), void *); 618 int uvm_coredump_walkmap(struct proc *, 619 void *, 620 int (*)(struct proc *, void *, 621 struct uvm_coredump_state *), void *); 622 void uvm_proc_exit(struct proc *); 623 void uvm_lwp_exit(struct lwp *); 624 void uvm_init_limits(struct proc *); 625 bool uvm_kernacc(void *, size_t, vm_prot_t); 626 __dead void uvm_scheduler(void); 627 vaddr_t uvm_uarea_alloc(void); 628 void uvm_uarea_free(vaddr_t); 629 vaddr_t uvm_uarea_system_alloc(void); 630 void uvm_uarea_system_free(vaddr_t); 631 vaddr_t uvm_lwp_getuarea(lwp_t *); 632 void uvm_lwp_setuarea(lwp_t *, vaddr_t); 633 int uvm_vslock(struct vmspace *, void *, size_t, vm_prot_t); 634 void uvm_vsunlock(struct vmspace *, void *, size_t); 635 void uvm_cpu_attach(struct cpu_info *); 636 637 638 /* uvm_init.c */ 639 void uvm_init(void); 640 641 /* uvm_io.c */ 642 int uvm_io(struct vm_map *, struct uio *); 643 644 /* uvm_km.c */ 645 vaddr_t uvm_km_alloc(struct vm_map *, vsize_t, vsize_t, 646 uvm_flag_t); 647 void uvm_km_free(struct vm_map *, vaddr_t, vsize_t, 648 uvm_flag_t); 649 650 struct vm_map *uvm_km_suballoc(struct vm_map *, vaddr_t *, 651 vaddr_t *, vsize_t, int, bool, 652 struct vm_map_kernel *); 653 vaddr_t uvm_km_alloc_poolpage(struct vm_map *, bool); 654 void uvm_km_free_poolpage(struct vm_map *, vaddr_t); 655 vaddr_t uvm_km_alloc_poolpage_cache(struct vm_map *, bool); 656 void uvm_km_free_poolpage_cache(struct vm_map *, vaddr_t); 657 void uvm_km_vacache_init(struct vm_map *, 658 const char *, size_t); 659 660 /* uvm_map.c */ 661 int uvm_map(struct vm_map *, vaddr_t *, vsize_t, 662 struct uvm_object *, voff_t, vsize_t, 663 uvm_flag_t); 664 int uvm_map_pageable(struct vm_map *, vaddr_t, 665 vaddr_t, bool, int); 666 int uvm_map_pageable_all(struct vm_map *, int, vsize_t); 667 bool uvm_map_checkprot(struct vm_map *, vaddr_t, 668 vaddr_t, vm_prot_t); 669 int uvm_map_protect(struct vm_map *, vaddr_t, 670 vaddr_t, vm_prot_t, bool); 671 struct vmspace *uvmspace_alloc(vaddr_t, vaddr_t); 672 void uvmspace_init(struct vmspace *, struct pmap *, 673 vaddr_t, vaddr_t); 674 void uvmspace_exec(struct lwp *, vaddr_t, vaddr_t); 675 struct vmspace *uvmspace_fork(struct vmspace *); 676 void uvmspace_addref(struct vmspace *); 677 void uvmspace_free(struct vmspace *); 678 void uvmspace_share(struct proc *, struct proc *); 679 void uvmspace_unshare(struct lwp *); 680 681 void uvm_whatis(uintptr_t, void (*)(const char *, ...)); 682 683 /* uvm_meter.c */ 684 int uvm_sysctl(int *, u_int, void *, size_t *, 685 void *, size_t, struct proc *); 686 int uvm_pctparam_check(struct uvm_pctparam *, int); 687 void uvm_pctparam_set(struct uvm_pctparam *, int); 688 int uvm_pctparam_get(struct uvm_pctparam *); 689 void uvm_pctparam_init(struct uvm_pctparam *, int, 690 int (*)(struct uvm_pctparam *, int)); 691 int uvm_pctparam_createsysctlnode(struct uvm_pctparam *, 692 const char *, const char *); 693 694 /* uvm_mmap.c */ 695 int uvm_mmap(struct vm_map *, vaddr_t *, vsize_t, 696 vm_prot_t, vm_prot_t, int, 697 void *, voff_t, vsize_t); 698 vaddr_t uvm_default_mapaddr(struct proc *, vaddr_t, vsize_t); 699 700 /* uvm_mremap.c */ 701 int uvm_mremap(struct vm_map *, vaddr_t, vsize_t, 702 struct vm_map *, vaddr_t *, vsize_t, 703 struct proc *, int); 704 705 /* uvm_object.c */ 706 void uvm_obj_init(struct uvm_object *, 707 const struct uvm_pagerops *, bool, u_int); 708 void uvm_obj_setlock(struct uvm_object *, kmutex_t *); 709 void uvm_obj_destroy(struct uvm_object *, bool); 710 int uvm_obj_wirepages(struct uvm_object *, off_t, off_t, 711 struct pglist *); 712 void uvm_obj_unwirepages(struct uvm_object *, off_t, off_t); 713 714 /* uvm_page.c */ 715 struct vm_page *uvm_pagealloc_strat(struct uvm_object *, 716 voff_t, struct vm_anon *, int, int, int); 717 #define uvm_pagealloc(obj, off, anon, flags) \ 718 uvm_pagealloc_strat((obj), (off), (anon), (flags), \ 719 UVM_PGA_STRAT_NORMAL, 0) 720 void uvm_pagereplace(struct vm_page *, 721 struct vm_page *); 722 void uvm_pagerealloc(struct vm_page *, 723 struct uvm_object *, voff_t); 724 /* Actually, uvm_page_physload takes PF#s which need their own type */ 725 void uvm_page_physload(paddr_t, paddr_t, paddr_t, 726 paddr_t, int); 727 void uvm_setpagesize(void); 728 729 /* uvm_pager.c */ 730 void uvm_aio_biodone(struct buf *); 731 void uvm_aio_aiodone(struct buf *); 732 void uvm_aio_aiodone_pages(struct vm_page **, int, bool, 733 int); 734 735 /* uvm_pdaemon.c */ 736 void uvm_pageout(void *); 737 struct work; 738 void uvm_aiodone_worker(struct work *, void *); 739 void uvm_pageout_start(int); 740 void uvm_pageout_done(int); 741 void uvm_estimatepageable(int *, int *); 742 743 /* uvm_pglist.c */ 744 int uvm_pglistalloc(psize_t, paddr_t, paddr_t, 745 paddr_t, paddr_t, struct pglist *, int, int); 746 void uvm_pglistfree(struct pglist *); 747 748 /* uvm_swap.c */ 749 void uvm_swap_init(void); 750 751 /* uvm_unix.c */ 752 int uvm_grow(struct proc *, vaddr_t); 753 754 /* uvm_user.c */ 755 void uvm_deallocate(struct vm_map *, vaddr_t, vsize_t); 756 757 /* uvm_vnode.c */ 758 void uvm_vnp_setsize(struct vnode *, voff_t); 759 void uvm_vnp_setwritesize(struct vnode *, voff_t); 760 int uvn_findpages(struct uvm_object *, voff_t, 761 int *, struct vm_page **, int); 762 bool uvn_text_p(struct uvm_object *); 763 bool uvn_clean_p(struct uvm_object *); 764 bool uvn_needs_writefault_p(struct uvm_object *); 765 766 /* kern_malloc.c */ 767 void kmeminit_nkmempages(void); 768 void kmeminit(void); 769 extern int nkmempages; 770 771 #endif /* _KERNEL */ 772 773 #endif /* _UVM_UVM_EXTERN_H_ */ 774
Indexes created Mon Sep 22 13:09:51 GMT 2025