uvm_extern.h revision 1.168
1 /* $NetBSD: uvm_extern.h,v 1.168 2011/01/04 08:26:33 matt Exp $ */ 2 3 /* 4 * 5 * Copyright (c) 1997 Charles D. Cranor and Washington University. 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. All advertising materials mentioning features or use of this software 17 * must display the following acknowledgement: 18 * This product includes software developed by Charles D. Cranor and 19 * Washington University. 20 * 4. The name of the author may not be used to endorse or promote products 21 * derived from this software without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 24 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 25 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 26 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 27 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 28 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 29 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 30 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 31 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 32 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 33 * 34 * from: Id: uvm_extern.h,v 1.1.2.21 1998/02/07 01:16:53 chs Exp 35 */ 36 37 /*- 38 * Copyright (c) 1991, 1992, 1993 39 * The Regents of the University of California. All rights reserved. 40 * 41 * Redistribution and use in source and binary forms, with or without 42 * modification, are permitted provided that the following conditions 43 * are met: 44 * 1. Redistributions of source code must retain the above copyright 45 * notice, this list of conditions and the following disclaimer. 46 * 2. Redistributions in binary form must reproduce the above copyright 47 * notice, this list of conditions and the following disclaimer in the 48 * documentation and/or other materials provided with the distribution. 49 * 3. Neither the name of the University nor the names of its contributors 50 * may be used to endorse or promote products derived from this software 51 * without specific prior written permission. 52 * 53 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 54 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 55 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 56 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 57 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 58 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 59 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 60 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 61 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 62 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 63 * SUCH DAMAGE. 64 * 65 * @(#)vm_extern.h 8.5 (Berkeley) 5/3/95 66 */ 67 68 #ifndef _UVM_UVM_EXTERN_H_ 69 #define _UVM_UVM_EXTERN_H_ 70 71 /* 72 * uvm_extern.h: this file defines the external interface to the VM system. 73 * 74 * this should be the only file included by non-VM parts of the kernel 75 * which need access to VM services. if you want to know the interface 76 * to the MI VM layer without knowing the details, this is the file to 77 * learn. 78 * 79 * NOTE: vm system calls are prototyped in syscallargs.h 80 */ 81 82 /* 83 * typedefs, necessary for standard UVM headers. 84 */ 85 86 typedef unsigned int uvm_flag_t; 87 88 typedef int vm_inherit_t; /* XXX: inheritance codes */ 89 typedef off_t voff_t; /* XXX: offset within a uvm_object */ 90 typedef voff_t pgoff_t; /* XXX: number of pages within a uvm object */ 91 92 /* 93 * defines 94 */ 95 96 /* 97 * the following defines are for uvm_map and functions which call it. 98 */ 99 100 /* protections bits */ 101 #define UVM_PROT_MASK 0x07 /* protection mask */ 102 #define UVM_PROT_NONE 0x00 /* protection none */ 103 #define UVM_PROT_ALL 0x07 /* everything */ 104 #define UVM_PROT_READ 0x01 /* read */ 105 #define UVM_PROT_WRITE 0x02 /* write */ 106 #define UVM_PROT_EXEC 0x04 /* exec */ 107 108 /* protection short codes */ 109 #define UVM_PROT_R 0x01 /* read */ 110 #define UVM_PROT_W 0x02 /* write */ 111 #define UVM_PROT_RW 0x03 /* read-write */ 112 #define UVM_PROT_X 0x04 /* exec */ 113 #define UVM_PROT_RX 0x05 /* read-exec */ 114 #define UVM_PROT_WX 0x06 /* write-exec */ 115 #define UVM_PROT_RWX 0x07 /* read-write-exec */ 116 117 /* 0x08: not used */ 118 119 /* inherit codes */ 120 #define UVM_INH_MASK 0x30 /* inherit mask */ 121 #define UVM_INH_SHARE 0x00 /* "share" */ 122 #define UVM_INH_COPY 0x10 /* "copy" */ 123 #define UVM_INH_NONE 0x20 /* "none" */ 124 #define UVM_INH_DONATE 0x30 /* "donate" << not used */ 125 126 /* 0x40, 0x80: not used */ 127 128 /* bits 0x700: max protection, 0x800: not used */ 129 130 /* bits 0x7000: advice, 0x8000: not used */ 131 /* advice: matches MADV_* from sys/mman.h and POSIX_FADV_* from sys/fcntl.h */ 132 #define UVM_ADV_NORMAL 0x0 /* 'normal' */ 133 #define UVM_ADV_RANDOM 0x1 /* 'random' */ 134 #define UVM_ADV_SEQUENTIAL 0x2 /* 'sequential' */ 135 #define UVM_ADV_WILLNEED 0x3 /* pages will be needed */ 136 #define UVM_ADV_DONTNEED 0x4 /* pages won't be needed */ 137 #define UVM_ADV_NOREUSE 0x5 /* pages will be used only once */ 138 #define UVM_ADV_MASK 0x7 /* mask */ 139 140 /* bits 0xffff0000: mapping flags */ 141 #define UVM_FLAG_FIXED 0x010000 /* find space */ 142 #define UVM_FLAG_OVERLAY 0x020000 /* establish overlay */ 143 #define UVM_FLAG_NOMERGE 0x040000 /* don't merge map entries */ 144 #define UVM_FLAG_COPYONW 0x080000 /* set copy_on_write flag */ 145 #define UVM_FLAG_AMAPPAD 0x100000 /* for bss: pad amap to reduce malloc() */ 146 #define UVM_FLAG_TRYLOCK 0x200000 /* fail if we can not lock map */ 147 #define UVM_FLAG_NOWAIT 0x400000 /* not allowed to sleep */ 148 #define UVM_FLAG_QUANTUM 0x800000 /* entry can never be split later */ 149 #define UVM_FLAG_WAITVA 0x1000000 /* wait for va */ 150 #define UVM_FLAG_VAONLY 0x2000000 /* unmap: no pages are mapped */ 151 #define UVM_FLAG_COLORMATCH 0x4000000 /* match color given in off */ 152 153 /* macros to extract info */ 154 #define UVM_PROTECTION(X) ((X) & UVM_PROT_MASK) 155 #define UVM_INHERIT(X) (((X) & UVM_INH_MASK) >> 4) 156 #define UVM_MAXPROTECTION(X) (((X) >> 8) & UVM_PROT_MASK) 157 #define UVM_ADVICE(X) (((X) >> 12) & UVM_ADV_MASK) 158 159 #define UVM_MAPFLAG(PROT,MAXPROT,INH,ADVICE,FLAGS) \ 160 (((MAXPROT) << 8)|(PROT)|(INH)|((ADVICE) << 12)|(FLAGS)) 161 162 /* magic offset value: offset not known(obj) or don't care(!obj) */ 163 #define UVM_UNKNOWN_OFFSET ((voff_t) -1) 164 165 /* 166 * the following defines are for uvm_km_alloc/free's flags 167 */ 168 #define UVM_KMF_WIRED 0x1 /* allocation type: wired */ 169 #define UVM_KMF_PAGEABLE 0x2 /* allocation type: pageable */ 170 #define UVM_KMF_VAONLY 0x4 /* allocation type: VA only */ 171 #define UVM_KMF_TYPEMASK (UVM_KMF_VAONLY | UVM_KMF_PAGEABLE | UVM_KMF_WIRED) 172 #define UVM_KMF_CANFAIL 0x8 /* caller handles failure */ 173 #define UVM_KMF_ZERO 0x10 /* want zero filled memory */ 174 #define UVM_KMF_EXEC 0x20 /* need executable mapping */ 175 #define UVM_KMF_TRYLOCK UVM_FLAG_TRYLOCK /* try locking only */ 176 #define UVM_KMF_NOWAIT UVM_FLAG_NOWAIT /* not allowed to sleep */ 177 #define UVM_KMF_WAITVA UVM_FLAG_WAITVA /* sleep for va */ 178 179 /* 180 * the following defines the strategies for uvm_pagealloc_strat() 181 */ 182 #define UVM_PGA_STRAT_NORMAL 0 /* priority (low id to high) walk */ 183 #define UVM_PGA_STRAT_ONLY 1 /* only specified free list */ 184 #define UVM_PGA_STRAT_FALLBACK 2 /* ONLY falls back on NORMAL */ 185 186 /* 187 * flags for uvm_pagealloc_strat() 188 */ 189 #define UVM_PGA_USERESERVE 0x0001 /* ok to use reserve pages */ 190 #define UVM_PGA_ZERO 0x0002 /* returned page must be zero'd */ 191 192 /* 193 * flags for ubc_alloc() 194 */ 195 #define UBC_READ 0x001 196 #define UBC_WRITE 0x002 197 #define UBC_FAULTBUSY 0x004 198 199 /* 200 * flags for ubc_release() 201 */ 202 #define UBC_UNMAP 0x010 203 204 /* 205 * flags for ubc_uiomve() 206 */ 207 #define UBC_PARTIALOK 0x100 208 209 /* 210 * flags for uvn_findpages(). 211 */ 212 #define UFP_ALL 0x00 213 #define UFP_NOWAIT 0x01 214 #define UFP_NOALLOC 0x02 215 #define UFP_NOCACHE 0x04 216 #define UFP_NORDONLY 0x08 217 #define UFP_DIRTYONLY 0x10 218 #define UFP_BACKWARD 0x20 219 220 /* 221 * lockflags that control the locking behavior of various functions. 222 */ 223 #define UVM_LK_ENTER 0x00000001 /* map locked on entry */ 224 #define UVM_LK_EXIT 0x00000002 /* leave map locked on exit */ 225 226 /* 227 * Default number of pages to allocate on the stack 228 */ 229 #define UBC_MAX_PAGES 8 230 231 /* 232 * Value representing inactive emap. 233 */ 234 #define UVM_EMAP_INACTIVE (0) 235 236 /* 237 * structures 238 */ 239 240 struct buf; 241 struct core; 242 struct loadavg; 243 struct mount; 244 struct pglist; 245 struct proc; 246 struct uio; 247 struct uvm_object; 248 struct vm_anon; 249 struct vmspace; 250 struct pmap; 251 struct vnode; 252 struct simplelock; 253 struct vm_map_entry; 254 struct vm_map; 255 struct vm_page; 256 struct vmtotal; 257 258 /* 259 * uvm_pctparam: parameter to be shown as percentage to user. 260 */ 261 262 #define UVM_PCTPARAM_SHIFT 8 263 #define UVM_PCTPARAM_SCALE (1 << UVM_PCTPARAM_SHIFT) 264 #define UVM_PCTPARAM_APPLY(pct, x) \ 265 (((x) * (pct)->pct_scaled) >> UVM_PCTPARAM_SHIFT) 266 struct uvm_pctparam { 267 int pct_pct; /* percent [0, 100] */ /* should be the first member */ 268 int pct_scaled; 269 int (*pct_check)(struct uvm_pctparam *, int); 270 }; 271 272 /* 273 * uvmexp: global data structures that are exported to parts of the kernel 274 * other than the vm system. 275 */ 276 277 struct uvmexp { 278 /* vm_page constants */ 279 int pagesize; /* size of a page (PAGE_SIZE): must be power of 2 */ 280 int pagemask; /* page mask */ 281 int pageshift; /* page shift */ 282 283 /* vm_page counters */ 284 int npages; /* number of pages we manage */ 285 int free; /* number of free pages */ 286 int paging; /* number of pages in the process of being paged out */ 287 int wired; /* number of wired pages */ 288 289 /* 290 * Adding anything before this line will break binary compatibility 291 * with top(1) on NetBSD 1.5. 292 */ 293 294 int ncolors; /* number of page color buckets: must be p-o-2 */ 295 int colormask; /* color bucket mask */ 296 297 int zeropages; /* number of zero'd pages */ 298 int reserve_pagedaemon; /* number of pages reserved for pagedaemon */ 299 int reserve_kernel; /* number of pages reserved for kernel */ 300 unsigned anonpages; /* number of pages used by anon mappings */ 301 unsigned filepages; /* number of pages used by cached file data */ 302 unsigned execpages; /* number of pages used by cached exec data */ 303 304 /* pageout params */ 305 int freemin; /* min number of free pages */ 306 int freetarg; /* target number of free pages */ 307 int wiredmax; /* max number of wired pages */ 308 309 /* swap */ 310 int nswapdev; /* number of configured swap devices in system */ 311 int swpages; /* number of PAGE_SIZE'ed swap pages */ 312 int swpgavail; /* number of swap pages currently available */ 313 int swpginuse; /* number of swap pages in use */ 314 int swpgonly; /* number of swap pages in use, not also in RAM */ 315 int nswget; /* number of times fault calls uvm_swap_get() */ 316 317 /* stat counters. XXX: should be 64-bit counters */ 318 int _unused_faults; /* page fault count */ 319 int _unused_traps; /* trap count */ 320 int _unused_intrs; /* interrupt count */ 321 int _unused_swtch; /* context switch count */ 322 int _unused_softs; /* software interrupt count */ 323 int _unused_syscalls; /* system calls */ 324 int pageins; /* pagein operation count */ 325 /* pageouts are in pdpageouts below */ 326 int _unused1; 327 int _unused2; 328 int pgswapin; /* pages swapped in */ 329 int pgswapout; /* pages swapped out */ 330 int forks; /* forks */ 331 int forks_ppwait; /* forks where parent waits */ 332 int forks_sharevm; /* forks where vmspace is shared */ 333 int pga_zerohit; /* pagealloc where zero wanted and zero 334 was available */ 335 int pga_zeromiss; /* pagealloc where zero wanted and zero 336 not available */ 337 int zeroaborts; /* number of times page zeroing was 338 aborted */ 339 int colorhit; /* pagealloc where we got optimal color */ 340 int colormiss; /* pagealloc where we didn't */ 341 int cpuhit; /* pagealloc where we allocated locally */ 342 int cpumiss; /* pagealloc where we didn't */ 343 344 /* fault subcounters. XXX: should be 64-bit counters */ 345 int fltnoram; /* number of times fault was out of ram */ 346 int fltnoanon; /* number of times fault was out of anons */ 347 int fltpgwait; /* number of times fault had to wait on a page */ 348 int fltpgrele; /* number of times fault found a released page */ 349 int fltrelck; /* number of times fault relock called */ 350 int fltrelckok; /* number of times fault relock is a success */ 351 int fltanget; /* number of times fault gets anon page */ 352 int fltanretry; /* number of times fault retrys an anon get */ 353 int fltamcopy; /* number of times fault clears "needs copy" */ 354 int fltnamap; /* number of times fault maps a neighbor anon page */ 355 int fltnomap; /* number of times fault maps a neighbor obj page */ 356 int fltlget; /* number of times fault does a locked pgo_get */ 357 int fltget; /* number of times fault does an unlocked get */ 358 int flt_anon; /* number of times fault anon (case 1a) */ 359 int flt_acow; /* number of times fault anon cow (case 1b) */ 360 int flt_obj; /* number of times fault is on object page (2a) */ 361 int flt_prcopy; /* number of times fault promotes with copy (2b) */ 362 int flt_przero; /* number of times fault promotes with zerofill (2b) */ 363 364 /* daemon counters. XXX: should be 64-bit counters */ 365 int pdwoke; /* number of times daemon woke up */ 366 int pdrevs; /* number of times daemon rev'd clock hand */ 367 int _unused3; 368 int pdfreed; /* number of pages daemon freed since boot */ 369 int pdscans; /* number of pages daemon scanned since boot */ 370 int pdanscan; /* number of anonymous pages scanned by daemon */ 371 int pdobscan; /* number of object pages scanned by daemon */ 372 int pdreact; /* number of pages daemon reactivated since boot */ 373 int pdbusy; /* number of times daemon found a busy page */ 374 int pdpageouts; /* number of times daemon started a pageout */ 375 int pdpending; /* number of times daemon got a pending pagout */ 376 int pddeact; /* number of pages daemon deactivates */ 377 int pdreanon; /* anon pages reactivated due to thresholds */ 378 int pdrefile; /* file pages reactivated due to thresholds */ 379 int pdreexec; /* executable pages reactivated due to thresholds */ 380 }; 381 382 /* 383 * The following structure is 64-bit alignment safe. New elements 384 * should only be added to the end of this structure so binary 385 * compatibility can be preserved. 386 */ 387 struct uvmexp_sysctl { 388 int64_t pagesize; 389 int64_t pagemask; 390 int64_t pageshift; 391 int64_t npages; 392 int64_t free; 393 int64_t active; 394 int64_t inactive; 395 int64_t paging; 396 int64_t wired; 397 int64_t zeropages; 398 int64_t reserve_pagedaemon; 399 int64_t reserve_kernel; 400 int64_t freemin; 401 int64_t freetarg; 402 int64_t inactarg; /* unused */ 403 int64_t wiredmax; 404 int64_t nswapdev; 405 int64_t swpages; 406 int64_t swpginuse; 407 int64_t swpgonly; 408 int64_t nswget; 409 int64_t unused1; /* unused; was nanon */ 410 int64_t cpuhit; 411 int64_t cpumiss; 412 int64_t faults; 413 int64_t traps; 414 int64_t intrs; 415 int64_t swtch; 416 int64_t softs; 417 int64_t syscalls; 418 int64_t pageins; 419 int64_t swapins; /* unused */ 420 int64_t swapouts; /* unused */ 421 int64_t pgswapin; 422 int64_t pgswapout; 423 int64_t forks; 424 int64_t forks_ppwait; 425 int64_t forks_sharevm; 426 int64_t pga_zerohit; 427 int64_t pga_zeromiss; 428 int64_t zeroaborts; 429 int64_t fltnoram; 430 int64_t fltnoanon; 431 int64_t fltpgwait; 432 int64_t fltpgrele; 433 int64_t fltrelck; 434 int64_t fltrelckok; 435 int64_t fltanget; 436 int64_t fltanretry; 437 int64_t fltamcopy; 438 int64_t fltnamap; 439 int64_t fltnomap; 440 int64_t fltlget; 441 int64_t fltget; 442 int64_t flt_anon; 443 int64_t flt_acow; 444 int64_t flt_obj; 445 int64_t flt_prcopy; 446 int64_t flt_przero; 447 int64_t pdwoke; 448 int64_t pdrevs; 449 int64_t unused4; 450 int64_t pdfreed; 451 int64_t pdscans; 452 int64_t pdanscan; 453 int64_t pdobscan; 454 int64_t pdreact; 455 int64_t pdbusy; 456 int64_t pdpageouts; 457 int64_t pdpending; 458 int64_t pddeact; 459 int64_t anonpages; 460 int64_t filepages; 461 int64_t execpages; 462 int64_t colorhit; 463 int64_t colormiss; 464 int64_t ncolors; 465 }; 466 467 #ifdef _KERNEL 468 /* we need this before including uvm_page.h on some platforms */ 469 extern struct uvmexp uvmexp; 470 /* MD code needs this without including <uvm/uvm.h> */ 471 extern bool vm_page_zero_enable; 472 #endif 473 474 /* 475 * Finally, bring in standard UVM headers. 476 */ 477 #include <sys/vmmeter.h> 478 #include <sys/queue.h> 479 #include <sys/lock.h> 480 #include <uvm/uvm_param.h> 481 #include <uvm/uvm_prot.h> 482 #include <uvm/uvm_pmap.h> 483 #include <uvm/uvm_map.h> 484 #include <uvm/uvm_pager.h> 485 486 /* 487 * helpers for calling ubc_release() 488 */ 489 #ifdef PMAP_CACHE_VIVT 490 #define UBC_WANT_UNMAP(vp) (((vp)->v_iflag & VI_TEXT) != 0) 491 #else 492 #define UBC_WANT_UNMAP(vp) false 493 #endif 494 #define UBC_UNMAP_FLAG(vp) (UBC_WANT_UNMAP(vp) ? UBC_UNMAP : 0) 495 496 /* 497 * Shareable process virtual address space. 498 * May eventually be merged with vm_map. 499 * Several fields are temporary (text, data stuff). 500 */ 501 struct vmspace { 502 struct vm_map vm_map; /* VM address map */ 503 int vm_refcnt; /* number of references * 504 * note: protected by vm_map.ref_lock */ 505 void * vm_shm; /* SYS5 shared memory private data XXX */ 506 /* we copy from vm_startcopy to the end of the structure on fork */ 507 #define vm_startcopy vm_rssize 508 segsz_t vm_rssize; /* current resident set size in pages */ 509 segsz_t vm_swrss; /* resident set size before last swap */ 510 segsz_t vm_tsize; /* text size (pages) XXX */ 511 segsz_t vm_dsize; /* data size (pages) XXX */ 512 segsz_t vm_ssize; /* stack size (pages) */ 513 segsz_t vm_issize; /* initial unmapped stack size (pages) */ 514 void * vm_taddr; /* user virtual address of text XXX */ 515 void * vm_daddr; /* user virtual address of data XXX */ 516 void *vm_maxsaddr; /* user VA at max stack growth */ 517 void *vm_minsaddr; /* user VA at top of stack */ 518 size_t vm_aslr_delta_mmap; /* mmap() random delta for ASLR */ 519 }; 520 #define VMSPACE_IS_KERNEL_P(vm) VM_MAP_IS_KERNEL(&(vm)->vm_map) 521 522 #ifdef _KERNEL 523 524 /* 525 * used to keep state while iterating over the map for a core dump. 526 */ 527 struct uvm_coredump_state { 528 void *cookie; /* opaque for the caller */ 529 vaddr_t start; /* start of region */ 530 vaddr_t realend; /* real end of region */ 531 vaddr_t end; /* virtual end of region */ 532 vm_prot_t prot; /* protection of region */ 533 int flags; /* flags; see below */ 534 }; 535 536 #define UVM_COREDUMP_STACK 0x01 /* region is user stack */ 537 538 /* 539 * Structure containig uvm reclaim hooks, uvm_reclaim_list is guarded by 540 * uvm_reclaim_lock. 541 */ 542 struct uvm_reclaim_hook { 543 void (*uvm_reclaim_hook)(void); 544 SLIST_ENTRY(uvm_reclaim_hook) uvm_reclaim_next; 545 }; 546 547 void uvm_reclaim_init(void); 548 void uvm_reclaim_hook_add(struct uvm_reclaim_hook *); 549 void uvm_reclaim_hook_del(struct uvm_reclaim_hook *); 550 551 /* 552 * the various kernel maps, owned by MD code 553 */ 554 extern struct vm_map *kernel_map; 555 extern struct vm_map *kmem_map; 556 extern struct vm_map *phys_map; 557 558 /* 559 * macros 560 */ 561 562 #define vm_resident_count(vm) (pmap_resident_count((vm)->vm_map.pmap)) 563 564 #include <sys/mallocvar.h> 565 MALLOC_DECLARE(M_VMMAP); 566 MALLOC_DECLARE(M_VMPMAP); 567 568 /* vm_machdep.c */ 569 void vmapbuf(struct buf *, vsize_t); 570 void vunmapbuf(struct buf *, vsize_t); 571 572 /* uvm_aobj.c */ 573 struct uvm_object *uao_create(vsize_t, int); 574 void uao_detach(struct uvm_object *); 575 void uao_reference(struct uvm_object *); 576 577 /* uvm_bio.c */ 578 void ubc_init(void); 579 void * ubc_alloc(struct uvm_object *, voff_t, vsize_t *, int, 580 int); 581 void ubc_release(void *, int); 582 int ubc_uiomove(struct uvm_object *, struct uio *, vsize_t, 583 int, int); 584 585 /* uvm_emap.c */ 586 void uvm_emap_sysinit(void); 587 #ifdef __HAVE_PMAP_EMAP 588 void uvm_emap_switch(lwp_t *); 589 #else 590 #define uvm_emap_switch(l) 591 #endif 592 593 u_int uvm_emap_gen_return(void); 594 void uvm_emap_update(u_int); 595 596 vaddr_t uvm_emap_alloc(vsize_t, bool); 597 void uvm_emap_free(vaddr_t, size_t); 598 599 void uvm_emap_enter(vaddr_t, struct vm_page **, u_int); 600 void uvm_emap_remove(vaddr_t, vsize_t); 601 602 #ifdef __HAVE_PMAP_EMAP 603 void uvm_emap_consume(u_int); 604 u_int uvm_emap_produce(void); 605 #else 606 #define uvm_emap_consume(x) 607 #define uvm_emap_produce() UVM_EMAP_INACTIVE 608 #endif 609 610 /* uvm_fault.c */ 611 #define uvm_fault(m, a, p) uvm_fault_internal(m, a, p, 0) 612 int uvm_fault_internal(struct vm_map *, vaddr_t, vm_prot_t, int); 613 /* handle a page fault */ 614 615 /* uvm_glue.c */ 616 #if defined(KGDB) 617 void uvm_chgkprot(void *, size_t, int); 618 #endif 619 void uvm_proc_fork(struct proc *, struct proc *, bool); 620 void uvm_lwp_fork(struct lwp *, struct lwp *, 621 void *, size_t, void (*)(void *), void *); 622 int uvm_coredump_walkmap(struct proc *, 623 void *, 624 int (*)(struct proc *, void *, 625 struct uvm_coredump_state *), void *); 626 void uvm_proc_exit(struct proc *); 627 void uvm_lwp_exit(struct lwp *); 628 void uvm_init_limits(struct proc *); 629 bool uvm_kernacc(void *, size_t, int); 630 __dead void uvm_scheduler(void); 631 vaddr_t uvm_uarea_alloc(void); 632 void uvm_uarea_free(vaddr_t); 633 vaddr_t uvm_lwp_getuarea(lwp_t *); 634 void uvm_lwp_setuarea(lwp_t *, vaddr_t); 635 int uvm_vslock(struct vmspace *, void *, size_t, vm_prot_t); 636 void uvm_vsunlock(struct vmspace *, void *, size_t); 637 void uvm_cpu_attach(struct cpu_info *); 638 639 640 /* uvm_init.c */ 641 void uvm_init(void); 642 643 /* uvm_io.c */ 644 int uvm_io(struct vm_map *, struct uio *); 645 646 /* uvm_km.c */ 647 vaddr_t uvm_km_alloc(struct vm_map *, vsize_t, vsize_t, 648 uvm_flag_t); 649 void uvm_km_free(struct vm_map *, vaddr_t, vsize_t, 650 uvm_flag_t); 651 652 struct vm_map *uvm_km_suballoc(struct vm_map *, vaddr_t *, 653 vaddr_t *, vsize_t, int, bool, 654 struct vm_map_kernel *); 655 vaddr_t uvm_km_alloc_poolpage(struct vm_map *, bool); 656 void uvm_km_free_poolpage(struct vm_map *, vaddr_t); 657 vaddr_t uvm_km_alloc_poolpage_cache(struct vm_map *, bool); 658 void uvm_km_free_poolpage_cache(struct vm_map *, vaddr_t); 659 void uvm_km_vacache_init(struct vm_map *, 660 const char *, size_t); 661 662 /* uvm_map.c */ 663 int uvm_map(struct vm_map *, vaddr_t *, vsize_t, 664 struct uvm_object *, voff_t, vsize_t, 665 uvm_flag_t); 666 int uvm_map_pageable(struct vm_map *, vaddr_t, 667 vaddr_t, bool, int); 668 int uvm_map_pageable_all(struct vm_map *, int, vsize_t); 669 bool uvm_map_checkprot(struct vm_map *, vaddr_t, 670 vaddr_t, vm_prot_t); 671 int uvm_map_protect(struct vm_map *, vaddr_t, 672 vaddr_t, vm_prot_t, bool); 673 struct vmspace *uvmspace_alloc(vaddr_t, vaddr_t); 674 void uvmspace_init(struct vmspace *, struct pmap *, 675 vaddr_t, vaddr_t); 676 void uvmspace_exec(struct lwp *, vaddr_t, vaddr_t); 677 struct vmspace *uvmspace_fork(struct vmspace *); 678 void uvmspace_addref(struct vmspace *); 679 void uvmspace_free(struct vmspace *); 680 void uvmspace_share(struct proc *, struct proc *); 681 void uvmspace_unshare(struct lwp *); 682 683 void uvm_whatis(uintptr_t, void (*)(const char *, ...)); 684 685 /* uvm_meter.c */ 686 int uvm_sysctl(int *, u_int, void *, size_t *, 687 void *, size_t, struct proc *); 688 int uvm_pctparam_check(struct uvm_pctparam *, int); 689 void uvm_pctparam_set(struct uvm_pctparam *, int); 690 int uvm_pctparam_get(struct uvm_pctparam *); 691 void uvm_pctparam_init(struct uvm_pctparam *, int, 692 int (*)(struct uvm_pctparam *, int)); 693 int uvm_pctparam_createsysctlnode(struct uvm_pctparam *, 694 const char *, const char *); 695 696 /* uvm_mmap.c */ 697 int uvm_mmap(struct vm_map *, vaddr_t *, vsize_t, 698 vm_prot_t, vm_prot_t, int, 699 void *, voff_t, vsize_t); 700 vaddr_t uvm_default_mapaddr(struct proc *, vaddr_t, vsize_t); 701 702 /* uvm_mremap.c */ 703 int uvm_mremap(struct vm_map *, vaddr_t, vsize_t, 704 struct vm_map *, vaddr_t *, vsize_t, 705 struct proc *, int); 706 707 /* uvm_object.c */ 708 int uobj_wirepages(struct uvm_object *uobj, off_t start, 709 off_t end); 710 void uobj_unwirepages(struct uvm_object *uobj, off_t start, 711 off_t end); 712 713 /* uvm_page.c */ 714 struct vm_page *uvm_pagealloc_strat(struct uvm_object *, 715 voff_t, struct vm_anon *, int, int, int); 716 #define uvm_pagealloc(obj, off, anon, flags) \ 717 uvm_pagealloc_strat((obj), (off), (anon), (flags), \ 718 UVM_PGA_STRAT_NORMAL, 0) 719 void uvm_pagereplace(struct vm_page *, 720 struct vm_page *); 721 void uvm_pagerealloc(struct vm_page *, 722 struct uvm_object *, voff_t); 723 /* Actually, uvm_page_physload takes PF#s which need their own type */ 724 void uvm_page_physload(paddr_t, paddr_t, paddr_t, 725 paddr_t, int); 726 void uvm_setpagesize(void); 727 728 /* uvm_pager.c */ 729 void uvm_aio_biodone(struct buf *); 730 void uvm_aio_aiodone(struct buf *); 731 void uvm_aio_aiodone_pages(struct vm_page **, int, bool, 732 int); 733 734 /* uvm_pdaemon.c */ 735 void uvm_pageout(void *); 736 struct work; 737 void uvm_aiodone_worker(struct work *, void *); 738 void uvm_pageout_start(int); 739 void uvm_pageout_done(int); 740 void uvm_estimatepageable(int *, int *); 741 742 /* uvm_pglist.c */ 743 int uvm_pglistalloc(psize_t, paddr_t, paddr_t, 744 paddr_t, paddr_t, struct pglist *, int, int); 745 void uvm_pglistfree(struct pglist *); 746 747 /* uvm_swap.c */ 748 void uvm_swap_init(void); 749 750 /* uvm_unix.c */ 751 int uvm_grow(struct proc *, vaddr_t); 752 753 /* uvm_user.c */ 754 void uvm_deallocate(struct vm_map *, vaddr_t, vsize_t); 755 756 /* uvm_vnode.c */ 757 void uvm_vnp_setsize(struct vnode *, voff_t); 758 void uvm_vnp_setwritesize(struct vnode *, voff_t); 759 int uvn_findpages(struct uvm_object *, voff_t, 760 int *, struct vm_page **, int); 761 void uvm_vnp_zerorange(struct vnode *, off_t, size_t); 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