uvm_extern.h revision 1.176.2.10
1 /* $NetBSD: uvm_extern.h,v 1.176.2.10 2012/10/30 17:23:01 yamt 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 #define UFP_ONLYPAGER1 0x40 203 #define UFP_NOPAGER1 0x80 204 205 /* 206 * lockflags that control the locking behavior of various functions. 207 */ 208 #define UVM_LK_ENTER 0x00000001 /* map locked on entry */ 209 #define UVM_LK_EXIT 0x00000002 /* leave map locked on exit */ 210 211 /* 212 * Default number of pages to allocate on the stack 213 */ 214 #define UBC_MAX_PAGES 8 215 216 /* 217 * Value representing inactive emap. 218 */ 219 #define UVM_EMAP_INACTIVE (0) 220 221 /* 222 * structures 223 */ 224 225 struct buf; 226 struct core; 227 struct loadavg; 228 struct mount; 229 struct pglist; 230 struct proc; 231 struct uio; 232 struct uvm_object; 233 struct vm_anon; 234 struct vmspace; 235 struct pmap; 236 struct vnode; 237 struct simplelock; 238 struct vm_map_entry; 239 struct vm_map; 240 struct vm_page; 241 struct vmtotal; 242 243 /* 244 * uvm_pctparam: parameter to be shown as percentage to user. 245 */ 246 247 #define UVM_PCTPARAM_SHIFT 8 248 #define UVM_PCTPARAM_SCALE (1 << UVM_PCTPARAM_SHIFT) 249 #define UVM_PCTPARAM_APPLY(pct, x) \ 250 (((x) * (pct)->pct_scaled) >> UVM_PCTPARAM_SHIFT) 251 struct uvm_pctparam { 252 int pct_pct; /* percent [0, 100] */ /* should be the first member */ 253 int pct_scaled; 254 int (*pct_check)(struct uvm_pctparam *, int); 255 }; 256 257 /* 258 * uvmexp: global data structures that are exported to parts of the kernel 259 * other than the vm system. 260 */ 261 262 struct uvmexp { 263 /* vm_page constants */ 264 int pagesize; /* size of a page (PAGE_SIZE): must be power of 2 */ 265 int pagemask; /* page mask */ 266 int pageshift; /* page shift */ 267 268 /* vm_page counters */ 269 int npages; /* number of pages we manage */ 270 int free; /* number of free pages */ 271 int paging; /* number of pages in the process of being paged out */ 272 int wired; /* number of wired pages */ 273 274 /* 275 * Adding anything before this line will break binary compatibility 276 * with top(1) on NetBSD 1.5. 277 */ 278 279 int ncolors; /* number of page color buckets: must be p-o-2 */ 280 int colormask; /* color bucket mask */ 281 282 int zeropages; /* number of zero'd pages */ 283 int reserve_pagedaemon; /* number of pages reserved for pagedaemon */ 284 int reserve_kernel; /* number of pages reserved for kernel */ 285 unsigned anonpages; /* number of pages used by anon mappings */ 286 unsigned filepages; /* number of pages used by cached file data */ 287 unsigned execpages; /* number of pages used by cached exec data */ 288 289 /* pageout params */ 290 int freemin; /* min number of free pages */ 291 int freetarg; /* target number of free pages */ 292 int wiredmax; /* max number of wired pages */ 293 294 /* swap */ 295 int nswapdev; /* number of configured swap devices in system */ 296 int swpages; /* number of PAGE_SIZE'ed swap pages */ 297 int swpgavail; /* number of swap pages currently available */ 298 int swpginuse; /* number of swap pages in use */ 299 int swpgonly; /* number of swap pages in use, not also in RAM */ 300 int nswget; /* number of times fault calls uvm_swap_get() */ 301 302 /* stat counters. XXX: should be 64-bit counters */ 303 int _unused_faults; /* page fault count */ 304 int _unused_traps; /* trap count */ 305 int _unused_intrs; /* interrupt count */ 306 int _unused_swtch; /* context switch count */ 307 int _unused_softs; /* software interrupt count */ 308 int _unused_syscalls; /* system calls */ 309 int pageins; /* pagein operation count */ 310 /* pageouts are in pdpageouts below */ 311 int _unused1; 312 int _unused2; 313 int pgswapin; /* pages swapped in */ 314 int pgswapout; /* pages swapped out */ 315 int forks; /* forks */ 316 int forks_ppwait; /* forks where parent waits */ 317 int forks_sharevm; /* forks where vmspace is shared */ 318 int pga_zerohit; /* pagealloc where zero wanted and zero 319 was available */ 320 int pga_zeromiss; /* pagealloc where zero wanted and zero 321 not available */ 322 int zeroaborts; /* number of times page zeroing was 323 aborted */ 324 int colorhit; /* pagealloc where we got optimal color */ 325 int colormiss; /* pagealloc where we didn't */ 326 int cpuhit; /* pagealloc where we allocated locally */ 327 int cpumiss; /* pagealloc where we didn't */ 328 329 /* fault subcounters. XXX: should be 64-bit counters */ 330 int fltnoram; /* number of times fault was out of ram */ 331 int fltnoanon; /* number of times fault was out of anons */ 332 int fltpgwait; /* number of times fault had to wait on a page */ 333 int fltpgrele; /* number of times fault found a released page */ 334 int fltrelck; /* number of times fault relock called */ 335 int fltrelckok; /* number of times fault relock is a success */ 336 int fltanget; /* number of times fault gets anon page */ 337 int fltanretry; /* number of times fault retrys an anon get */ 338 int fltamcopy; /* number of times fault clears "needs copy" */ 339 int fltnamap; /* number of times fault maps a neighbor anon page */ 340 int fltnomap; /* number of times fault maps a neighbor obj page */ 341 int fltlget; /* number of times fault does a locked pgo_get */ 342 int fltget; /* number of times fault does an unlocked get */ 343 int flt_anon; /* number of times fault anon (case 1a) */ 344 int flt_acow; /* number of times fault anon cow (case 1b) */ 345 int flt_obj; /* number of times fault is on object page (2a) */ 346 int flt_prcopy; /* number of times fault promotes with copy (2b) */ 347 int flt_przero; /* number of times fault promotes with zerofill (2b) */ 348 349 /* daemon counters. XXX: should be 64-bit counters */ 350 int pdwoke; /* number of times daemon woke up */ 351 int pdrevs; /* number of times daemon rev'd clock hand */ 352 int _unused3; 353 int pdfreed; /* number of pages daemon freed since boot */ 354 int pdscans; /* number of pages daemon scanned since boot */ 355 int pdanscan; /* number of anonymous pages scanned by daemon */ 356 int pdobscan; /* number of object pages scanned by daemon */ 357 int pdreact; /* number of pages daemon reactivated since boot */ 358 int pdbusy; /* number of times daemon found a busy page */ 359 int pdpageouts; /* number of times daemon started a pageout */ 360 int pdpending; /* number of times daemon got a pending pagout */ 361 int pddeact; /* number of pages daemon deactivates */ 362 int pdreanon; /* anon pages reactivated due to thresholds */ 363 int pdrefile; /* file pages reactivated due to thresholds */ 364 int pdreexec; /* executable pages reactivated due to thresholds */ 365 }; 366 367 /* 368 * The following structure is 64-bit alignment safe. New elements 369 * should only be added to the end of this structure so binary 370 * compatibility can be preserved. 371 */ 372 struct uvmexp_sysctl { 373 int64_t pagesize; 374 int64_t pagemask; 375 int64_t pageshift; 376 int64_t npages; 377 int64_t free; 378 int64_t active; 379 int64_t inactive; 380 int64_t paging; 381 int64_t wired; 382 int64_t zeropages; 383 int64_t reserve_pagedaemon; 384 int64_t reserve_kernel; 385 int64_t freemin; 386 int64_t freetarg; 387 int64_t inactarg; /* unused */ 388 int64_t wiredmax; 389 int64_t nswapdev; 390 int64_t swpages; 391 int64_t swpginuse; 392 int64_t swpgonly; 393 int64_t nswget; 394 int64_t unused1; /* unused; was nanon */ 395 int64_t cpuhit; 396 int64_t cpumiss; 397 int64_t faults; 398 int64_t traps; 399 int64_t intrs; 400 int64_t swtch; 401 int64_t softs; 402 int64_t syscalls; 403 int64_t pageins; 404 int64_t swapins; /* unused */ 405 int64_t swapouts; /* unused */ 406 int64_t pgswapin; 407 int64_t pgswapout; 408 int64_t forks; 409 int64_t forks_ppwait; 410 int64_t forks_sharevm; 411 int64_t pga_zerohit; 412 int64_t pga_zeromiss; 413 int64_t zeroaborts; 414 int64_t fltnoram; 415 int64_t fltnoanon; 416 int64_t fltpgwait; 417 int64_t fltpgrele; 418 int64_t fltrelck; 419 int64_t fltrelckok; 420 int64_t fltanget; 421 int64_t fltanretry; 422 int64_t fltamcopy; 423 int64_t fltnamap; 424 int64_t fltnomap; 425 int64_t fltlget; 426 int64_t fltget; 427 int64_t flt_anon; 428 int64_t flt_acow; 429 int64_t flt_obj; 430 int64_t flt_prcopy; 431 int64_t flt_przero; 432 int64_t pdwoke; 433 int64_t pdrevs; 434 int64_t unused4; 435 int64_t pdfreed; 436 int64_t pdscans; 437 int64_t pdanscan; 438 int64_t pdobscan; 439 int64_t pdreact; 440 int64_t pdbusy; 441 int64_t pdpageouts; 442 int64_t pdpending; 443 int64_t pddeact; 444 int64_t anonpages; 445 int64_t filepages; 446 int64_t execpages; 447 int64_t colorhit; 448 int64_t colormiss; 449 int64_t ncolors; 450 451 int64_t possiblydirtypages; 452 int64_t cleanpages; 453 int64_t dirtypages; 454 int64_t possiblydirtyanonpages; 455 int64_t cleananonpages; 456 int64_t dirtyanonpages; 457 458 int64_t loan_obj; /* O->K loan */ 459 int64_t unloan_obj; /* O->K unloan */ 460 int64_t loanbreak_obj; /* O->K loan resolved on write to O */ 461 int64_t loanfree_obj; /* O->K loan resolved on free of O */ 462 463 int64_t loan_anon; /* A->K loan */ 464 int64_t unloan_anon; /* A->K unloan */ 465 int64_t loanbreak_anon; /* A->K loan resolved on write to A */ 466 int64_t loanfree_anon; /* A->K loan resolved on free of A */ 467 468 int64_t loan_oa; /* O->A->K loan */ 469 int64_t unloan_oa; /* O->A->K unloan */ 470 471 int64_t loan_zero; /* O->K loan (zero) */ 472 int64_t unloan_zero; /* O->K unloan (zero) */ 473 474 int64_t loanbreak_orphaned; /* O->A->K loan turned into A->K loan due to 475 write to O */ 476 int64_t loanfree_orphaned; /* O->A->K loan turned into A->K loan due to 477 free of O */ 478 int64_t loanbreak_orphaned_anon; /* O->A->K loan turned into O->K loan 479 due to write to A */ 480 int64_t loanfree_orphaned_anon; /* O->A->K loan turned into O->K loan 481 due to free of A */ 482 483 int64_t loanbreak_oa_obj; /* O->A loan resolved on write to O */ 484 int64_t loanfree_oa_obj; /* O->A loan resolved on free of O */ 485 int64_t loanbreak_oa_anon; /* O->A loan resolved on write to A */ 486 int64_t loanfree_oa_anon; /* O->A loan resolved on free of A */ 487 int64_t loan_resolve_orphan; /* O->A loaned page taken over by anon */ 488 int64_t loan_obj_read; /* O->A loan for read(2) */ 489 }; 490 491 #ifdef _KERNEL 492 /* we need this before including uvm_page.h on some platforms */ 493 extern struct uvmexp uvmexp; 494 /* MD code needs this without including <uvm/uvm.h> */ 495 extern bool vm_page_zero_enable; 496 497 extern int vm_loan_read_thresh; 498 #endif 499 500 /* 501 * Finally, bring in standard UVM headers. 502 */ 503 #include <sys/vmmeter.h> 504 #include <sys/queue.h> 505 #include <sys/lock.h> 506 #ifdef _KERNEL 507 #include <sys/vmem.h> 508 #endif 509 #include <uvm/uvm_param.h> 510 #include <uvm/uvm_prot.h> 511 #include <uvm/uvm_pmap.h> 512 #include <uvm/uvm_map.h> 513 #include <uvm/uvm_pager.h> 514 515 /* 516 * helpers for calling ubc_release() 517 */ 518 #ifdef PMAP_CACHE_VIVT 519 #define UBC_WANT_UNMAP(vp) (((vp)->v_iflag & VI_TEXT) != 0) 520 #else 521 #define UBC_WANT_UNMAP(vp) false 522 #endif 523 #define UBC_UNMAP_FLAG(vp) (UBC_WANT_UNMAP(vp) ? UBC_UNMAP : 0) 524 525 /* 526 * Shareable process virtual address space. 527 * May eventually be merged with vm_map. 528 * Several fields are temporary (text, data stuff). 529 */ 530 struct vmspace { 531 struct vm_map vm_map; /* VM address map */ 532 int vm_refcnt; /* number of references * 533 * note: protected by vm_map.ref_lock */ 534 void * vm_shm; /* SYS5 shared memory private data XXX */ 535 /* we copy from vm_startcopy to the end of the structure on fork */ 536 #define vm_startcopy vm_rssize 537 segsz_t vm_rssize; /* current resident set size in pages */ 538 segsz_t vm_swrss; /* resident set size before last swap */ 539 segsz_t vm_tsize; /* text size (pages) XXX */ 540 segsz_t vm_dsize; /* data size (pages) XXX */ 541 segsz_t vm_ssize; /* stack size (pages) */ 542 segsz_t vm_issize; /* initial unmapped stack size (pages) */ 543 void * vm_taddr; /* user virtual address of text XXX */ 544 void * vm_daddr; /* user virtual address of data XXX */ 545 void *vm_maxsaddr; /* user VA at max stack growth */ 546 void *vm_minsaddr; /* user VA at top of stack */ 547 size_t vm_aslr_delta_mmap; /* mmap() random delta for ASLR */ 548 }; 549 #define VMSPACE_IS_KERNEL_P(vm) VM_MAP_IS_KERNEL(&(vm)->vm_map) 550 551 #ifdef _KERNEL 552 553 /* 554 * used to keep state while iterating over the map for a core dump. 555 */ 556 struct uvm_coredump_state { 557 void *cookie; /* opaque for the caller */ 558 vaddr_t start; /* start of region */ 559 vaddr_t realend; /* real end of region */ 560 vaddr_t end; /* virtual end of region */ 561 vm_prot_t prot; /* protection of region */ 562 int flags; /* flags; see below */ 563 }; 564 565 #define UVM_COREDUMP_STACK 0x01 /* region is user stack */ 566 567 /* 568 * the various kernel maps, owned by MD code 569 */ 570 extern struct vm_map *kernel_map; 571 extern struct vm_map *phys_map; 572 573 /* 574 * macros 575 */ 576 577 #define vm_resident_count(vm) (pmap_resident_count((vm)->vm_map.pmap)) 578 579 580 /* vm_machdep.c */ 581 int vmapbuf(struct buf *, vsize_t); 582 void vunmapbuf(struct buf *, vsize_t); 583 584 /* uvm_aobj.c */ 585 struct uvm_object *uao_create(vsize_t, int); 586 void uao_detach(struct uvm_object *); 587 void uao_reference(struct uvm_object *); 588 589 /* uvm_bio.c */ 590 void ubc_init(void); 591 void * ubc_alloc(struct uvm_object *, voff_t, vsize_t *, int, 592 int); 593 void ubc_release(void *, int); 594 int ubc_uiomove(struct uvm_object *, struct uio *, vsize_t, 595 int, int); 596 void ubc_zerorange(struct uvm_object *, off_t, size_t, int); 597 void ubc_purge(struct uvm_object *); 598 599 /* uvm_emap.c */ 600 void uvm_emap_sysinit(void); 601 #ifdef __HAVE_PMAP_EMAP 602 void uvm_emap_switch(lwp_t *); 603 #else 604 #define uvm_emap_switch(l) 605 #endif 606 607 u_int uvm_emap_gen_return(void); 608 void uvm_emap_update(u_int); 609 610 vaddr_t uvm_emap_alloc(vsize_t, bool); 611 void uvm_emap_free(vaddr_t, size_t); 612 613 void uvm_emap_enter(vaddr_t, struct vm_page **, u_int); 614 void uvm_emap_remove(vaddr_t, vsize_t); 615 616 #ifdef __HAVE_PMAP_EMAP 617 void uvm_emap_consume(u_int); 618 u_int uvm_emap_produce(void); 619 #else 620 #define uvm_emap_consume(x) 621 #define uvm_emap_produce() UVM_EMAP_INACTIVE 622 #endif 623 624 /* uvm_fault.c */ 625 #define uvm_fault(m, a, p) uvm_fault_internal(m, a, p, 0) 626 int uvm_fault_internal(struct vm_map *, vaddr_t, vm_prot_t, int); 627 /* handle a page fault */ 628 629 /* uvm_glue.c */ 630 #if defined(KGDB) 631 void uvm_chgkprot(void *, size_t, int); 632 #endif 633 void uvm_proc_fork(struct proc *, struct proc *, bool); 634 void uvm_lwp_fork(struct lwp *, struct lwp *, 635 void *, size_t, void (*)(void *), void *); 636 int uvm_coredump_walkmap(struct proc *, 637 void *, 638 int (*)(struct proc *, void *, 639 struct uvm_coredump_state *), void *); 640 void uvm_proc_exit(struct proc *); 641 void uvm_lwp_exit(struct lwp *); 642 void uvm_init_limits(struct proc *); 643 bool uvm_kernacc(void *, size_t, vm_prot_t); 644 __dead void uvm_scheduler(void); 645 vaddr_t uvm_uarea_alloc(void); 646 void uvm_uarea_free(vaddr_t); 647 vaddr_t uvm_uarea_system_alloc(struct cpu_info *); 648 void uvm_uarea_system_free(vaddr_t); 649 vaddr_t uvm_lwp_getuarea(lwp_t *); 650 void uvm_lwp_setuarea(lwp_t *, vaddr_t); 651 int uvm_vslock(struct vmspace *, void *, size_t, vm_prot_t); 652 void uvm_vsunlock(struct vmspace *, void *, size_t); 653 void uvm_cpu_attach(struct cpu_info *); 654 655 656 /* uvm_init.c */ 657 void uvm_init(void); 658 659 /* uvm_io.c */ 660 int uvm_io(struct vm_map *, struct uio *); 661 662 /* uvm_km.c */ 663 vaddr_t uvm_km_alloc(struct vm_map *, vsize_t, vsize_t, 664 uvm_flag_t); 665 void uvm_km_free(struct vm_map *, vaddr_t, vsize_t, 666 uvm_flag_t); 667 668 struct vm_map *uvm_km_suballoc(struct vm_map *, vaddr_t *, 669 vaddr_t *, vsize_t, int, bool, 670 struct vm_map *); 671 #ifdef _KERNEL 672 int uvm_km_kmem_alloc(vmem_t *, vmem_size_t, vm_flag_t, 673 vmem_addr_t *); 674 void uvm_km_kmem_free(vmem_t *, vmem_addr_t, vmem_size_t); 675 bool uvm_km_va_starved_p(void); 676 #endif 677 678 /* uvm_map.c */ 679 int uvm_map(struct vm_map *, vaddr_t *, vsize_t, 680 struct uvm_object *, voff_t, vsize_t, 681 uvm_flag_t); 682 int uvm_map_pageable(struct vm_map *, vaddr_t, 683 vaddr_t, bool, int); 684 int uvm_map_pageable_all(struct vm_map *, int, vsize_t); 685 bool uvm_map_checkprot(struct vm_map *, vaddr_t, 686 vaddr_t, vm_prot_t); 687 int uvm_map_protect(struct vm_map *, vaddr_t, 688 vaddr_t, vm_prot_t, bool); 689 struct vmspace *uvmspace_alloc(vaddr_t, vaddr_t); 690 void uvmspace_init(struct vmspace *, struct pmap *, 691 vaddr_t, vaddr_t); 692 void uvmspace_exec(struct lwp *, vaddr_t, vaddr_t); 693 void uvmspace_spawn(struct lwp *, vaddr_t, vaddr_t); 694 struct vmspace *uvmspace_fork(struct vmspace *); 695 void uvmspace_addref(struct vmspace *); 696 void uvmspace_free(struct vmspace *); 697 void uvmspace_share(struct proc *, struct proc *); 698 void uvmspace_unshare(struct lwp *); 699 700 void uvm_whatis(uintptr_t, void (*)(const char *, ...)); 701 702 /* uvm_meter.c */ 703 int uvm_sysctl(int *, u_int, void *, size_t *, 704 void *, size_t, struct proc *); 705 int uvm_pctparam_check(struct uvm_pctparam *, int); 706 void uvm_pctparam_set(struct uvm_pctparam *, int); 707 int uvm_pctparam_get(struct uvm_pctparam *); 708 void uvm_pctparam_init(struct uvm_pctparam *, int, 709 int (*)(struct uvm_pctparam *, int)); 710 int uvm_pctparam_createsysctlnode(struct uvm_pctparam *, 711 const char *, const char *); 712 713 /* uvm_mmap.c */ 714 int uvm_mmap(struct vm_map *, vaddr_t *, vsize_t, 715 vm_prot_t, vm_prot_t, int, 716 void *, voff_t, vsize_t); 717 vaddr_t uvm_default_mapaddr(struct proc *, vaddr_t, vsize_t); 718 719 /* uvm_mremap.c */ 720 int uvm_mremap(struct vm_map *, vaddr_t, vsize_t, 721 struct vm_map *, vaddr_t *, vsize_t, 722 struct proc *, int); 723 724 /* uvm_object.c */ 725 void uvm_obj_init(struct uvm_object *, 726 const struct uvm_pagerops *, bool, u_int); 727 void uvm_obj_setlock(struct uvm_object *, kmutex_t *); 728 void uvm_obj_destroy(struct uvm_object *, bool); 729 int uvm_obj_wirepages(struct uvm_object *, off_t, off_t, 730 struct pglist *); 731 void uvm_obj_unwirepages(struct uvm_object *, off_t, off_t); 732 733 /* uvm_page.c */ 734 struct vm_page *uvm_pagealloc_strat(struct uvm_object *, 735 voff_t, struct vm_anon *, int, int, int); 736 #define uvm_pagealloc(obj, off, anon, flags) \ 737 uvm_pagealloc_strat((obj), (off), (anon), (flags), \ 738 UVM_PGA_STRAT_NORMAL, 0) 739 void uvm_pagereplace(struct vm_page *, 740 struct vm_page *); 741 void uvm_pagerealloc(struct vm_page *, 742 struct uvm_object *, voff_t); 743 /* Actually, uvm_page_physload takes PF#s which need their own type */ 744 void uvm_page_physload(paddr_t, paddr_t, paddr_t, 745 paddr_t, int); 746 void uvm_setpagesize(void); 747 748 /* uvm_pager.c */ 749 void uvm_aio_biodone(struct buf *); 750 void uvm_aio_aiodone(struct buf *); 751 void uvm_aio_aiodone_pages(struct vm_page **, int, bool, 752 int); 753 754 /* uvm_pdaemon.c */ 755 void uvm_pageout(void *); 756 struct work; 757 void uvm_aiodone_worker(struct work *, void *); 758 void uvm_pageout_start(int); 759 void uvm_pageout_done(int); 760 void uvm_estimatepageable(int *, int *); 761 762 /* uvm_pglist.c */ 763 int uvm_pglistalloc(psize_t, paddr_t, paddr_t, 764 paddr_t, paddr_t, struct pglist *, int, int); 765 void uvm_pglistfree(struct pglist *); 766 767 /* uvm_swap.c */ 768 void uvm_swap_init(void); 769 770 /* uvm_unix.c */ 771 int uvm_grow(struct proc *, vaddr_t); 772 773 /* uvm_user.c */ 774 void uvm_deallocate(struct vm_map *, vaddr_t, vsize_t); 775 776 /* uvm_vnode.c */ 777 struct uvm_page_array; 778 void uvm_vnp_setsize(struct vnode *, voff_t); 779 void uvm_vnp_setwritesize(struct vnode *, voff_t); 780 int uvn_findpages(struct uvm_object *, voff_t, 781 unsigned int *, struct vm_page **, 782 struct uvm_page_array *, unsigned int); 783 bool uvn_text_p(struct uvm_object *); 784 bool uvn_clean_p(struct uvm_object *); 785 bool uvn_needs_writefault_p(struct uvm_object *); 786 787 /* kern_malloc.c */ 788 void kmeminit_nkmempages(void); 789 void kmeminit(void); 790 extern int nkmempages; 791 792 #endif /* _KERNEL */ 793 794 #endif /* _UVM_UVM_EXTERN_H_ */ 795
Indexes created Sun Oct 19 02:09:48 GMT 2025