uvm_extern.h revision 1.158
1 /* $NetBSD: uvm_extern.h,v 1.158 2009/08/10 23:17:29 haad 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 */ 151 152 /* macros to extract info */ 153 #define UVM_PROTECTION(X) ((X) & UVM_PROT_MASK) 154 #define UVM_INHERIT(X) (((X) & UVM_INH_MASK) >> 4) 155 #define UVM_MAXPROTECTION(X) (((X) >> 8) & UVM_PROT_MASK) 156 #define UVM_ADVICE(X) (((X) >> 12) & UVM_ADV_MASK) 157 158 #define UVM_MAPFLAG(PROT,MAXPROT,INH,ADVICE,FLAGS) \ 159 (((MAXPROT) << 8)|(PROT)|(INH)|((ADVICE) << 12)|(FLAGS)) 160 161 /* magic offset value: offset not known(obj) or don't care(!obj) */ 162 #define UVM_UNKNOWN_OFFSET ((voff_t) -1) 163 164 /* 165 * the following defines are for uvm_km_alloc/free's flags 166 */ 167 #define UVM_KMF_WIRED 0x1 /* allocation type: wired */ 168 #define UVM_KMF_PAGEABLE 0x2 /* allocation type: pageable */ 169 #define UVM_KMF_VAONLY 0x4 /* allocation type: VA only */ 170 #define UVM_KMF_TYPEMASK (UVM_KMF_VAONLY | UVM_KMF_PAGEABLE | UVM_KMF_WIRED) 171 #define UVM_KMF_CANFAIL 0x8 /* caller handles failure */ 172 #define UVM_KMF_ZERO 0x10 /* want zero filled memory */ 173 #define UVM_KMF_EXEC 0x20 /* need executable mapping */ 174 #define UVM_KMF_TRYLOCK UVM_FLAG_TRYLOCK /* try locking only */ 175 #define UVM_KMF_NOWAIT UVM_FLAG_NOWAIT /* not allowed to sleep */ 176 #define UVM_KMF_WAITVA UVM_FLAG_WAITVA /* sleep for va */ 177 178 /* 179 * the following defines the strategies for uvm_pagealloc_strat() 180 */ 181 #define UVM_PGA_STRAT_NORMAL 0 /* priority (low id to high) walk */ 182 #define UVM_PGA_STRAT_ONLY 1 /* only specified free list */ 183 #define UVM_PGA_STRAT_FALLBACK 2 /* ONLY falls back on NORMAL */ 184 185 /* 186 * flags for uvm_pagealloc_strat() 187 */ 188 #define UVM_PGA_USERESERVE 0x0001 /* ok to use reserve pages */ 189 #define UVM_PGA_ZERO 0x0002 /* returned page must be zero'd */ 190 191 /* 192 * flags for ubc_alloc() 193 */ 194 #define UBC_READ 0x001 195 #define UBC_WRITE 0x002 196 #define UBC_FAULTBUSY 0x004 197 198 /* 199 * flags for ubc_release() 200 */ 201 #define UBC_UNMAP 0x010 202 203 /* 204 * flags for ubc_uiomve() 205 */ 206 #define UBC_PARTIALOK 0x100 207 208 /* 209 * flags for uvn_findpages(). 210 */ 211 #define UFP_ALL 0x00 212 #define UFP_NOWAIT 0x01 213 #define UFP_NOALLOC 0x02 214 #define UFP_NOCACHE 0x04 215 #define UFP_NORDONLY 0x08 216 #define UFP_DIRTYONLY 0x10 217 #define UFP_BACKWARD 0x20 218 219 /* 220 * lockflags that control the locking behavior of various functions. 221 */ 222 #define UVM_LK_ENTER 0x00000001 /* map locked on entry */ 223 #define UVM_LK_EXIT 0x00000002 /* leave map locked on exit */ 224 225 /* 226 * Default number of pages to allocate on the stack 227 */ 228 #define UBC_MAX_PAGES 8 229 230 /* 231 * Value representing inactive emap. 232 */ 233 #define UVM_EMAP_INACTIVE (0) 234 235 /* 236 * structures 237 */ 238 239 struct buf; 240 struct core; 241 struct loadavg; 242 struct mount; 243 struct pglist; 244 struct proc; 245 struct uio; 246 struct uvm_object; 247 struct vm_anon; 248 struct vmspace; 249 struct pmap; 250 struct vnode; 251 struct simplelock; 252 struct vm_map_entry; 253 struct vm_map; 254 struct vm_page; 255 struct vmtotal; 256 257 /* 258 * uvm_pctparam: parameter to be shown as percentage to user. 259 */ 260 261 #define UVM_PCTPARAM_SHIFT 8 262 #define UVM_PCTPARAM_SCALE (1 << UVM_PCTPARAM_SHIFT) 263 #define UVM_PCTPARAM_APPLY(pct, x) \ 264 (((x) * (pct)->pct_scaled) >> UVM_PCTPARAM_SHIFT) 265 struct uvm_pctparam { 266 int pct_pct; /* percent [0, 100] */ /* should be the first member */ 267 int pct_scaled; 268 int (*pct_check)(struct uvm_pctparam *, int); 269 }; 270 271 /* 272 * uvmexp: global data structures that are exported to parts of the kernel 273 * other than the vm system. 274 */ 275 276 struct uvmexp { 277 /* vm_page constants */ 278 int pagesize; /* size of a page (PAGE_SIZE): must be power of 2 */ 279 int pagemask; /* page mask */ 280 int pageshift; /* page shift */ 281 282 /* vm_page counters */ 283 int npages; /* number of pages we manage */ 284 int free; /* number of free pages */ 285 int paging; /* number of pages in the process of being paged out */ 286 int wired; /* number of wired pages */ 287 288 /* 289 * Adding anything before this line will break binary compatibility 290 * with top(1) on NetBSD 1.5. 291 */ 292 293 int ncolors; /* number of page color buckets: must be p-o-2 */ 294 int colormask; /* color bucket mask */ 295 296 int zeropages; /* number of zero'd pages */ 297 int reserve_pagedaemon; /* number of pages reserved for pagedaemon */ 298 int reserve_kernel; /* number of pages reserved for kernel */ 299 unsigned anonpages; /* number of pages used by anon mappings */ 300 unsigned filepages; /* number of pages used by cached file data */ 301 unsigned execpages; /* number of pages used by cached exec data */ 302 303 /* pageout params */ 304 int freemin; /* min number of free pages */ 305 int freetarg; /* target number of free pages */ 306 int wiredmax; /* max number of wired pages */ 307 308 /* swap */ 309 int nswapdev; /* number of configured swap devices in system */ 310 int swpages; /* number of PAGE_SIZE'ed swap pages */ 311 int swpgavail; /* number of swap pages currently available */ 312 int swpginuse; /* number of swap pages in use */ 313 int swpgonly; /* number of swap pages in use, not also in RAM */ 314 int nswget; /* number of times fault calls uvm_swap_get() */ 315 316 /* stat counters. XXX: should be 64-bit counters */ 317 int faults; /* page fault count */ 318 int traps; /* trap count */ 319 int intrs; /* interrupt count */ 320 int swtch; /* context switch count */ 321 int softs; /* software interrupt count */ 322 int syscalls; /* system calls */ 323 int pageins; /* pagein operation count */ 324 /* pageouts are in pdpageouts below */ 325 int swapins; /* swapins */ 326 int swapouts; /* swapouts */ 327 int pgswapin; /* pages swapped in */ 328 int pgswapout; /* pages swapped out */ 329 int forks; /* forks */ 330 int forks_ppwait; /* forks where parent waits */ 331 int forks_sharevm; /* forks where vmspace is shared */ 332 int pga_zerohit; /* pagealloc where zero wanted and zero 333 was available */ 334 int pga_zeromiss; /* pagealloc where zero wanted and zero 335 not available */ 336 int zeroaborts; /* number of times page zeroing was 337 aborted */ 338 int colorhit; /* pagealloc where we got optimal color */ 339 int colormiss; /* pagealloc where we didn't */ 340 int cpuhit; /* pagealloc where we allocated locally */ 341 int cpumiss; /* pagealloc where we didn't */ 342 343 /* fault subcounters. XXX: should be 64-bit counters */ 344 int fltnoram; /* number of times fault was out of ram */ 345 int fltnoanon; /* number of times fault was out of anons */ 346 int fltpgwait; /* number of times fault had to wait on a page */ 347 int fltpgrele; /* number of times fault found a released page */ 348 int fltrelck; /* number of times fault relock called */ 349 int fltrelckok; /* number of times fault relock is a success */ 350 int fltanget; /* number of times fault gets anon page */ 351 int fltanretry; /* number of times fault retrys an anon get */ 352 int fltamcopy; /* number of times fault clears "needs copy" */ 353 int fltnamap; /* number of times fault maps a neighbor anon page */ 354 int fltnomap; /* number of times fault maps a neighbor obj page */ 355 int fltlget; /* number of times fault does a locked pgo_get */ 356 int fltget; /* number of times fault does an unlocked get */ 357 int flt_anon; /* number of times fault anon (case 1a) */ 358 int flt_acow; /* number of times fault anon cow (case 1b) */ 359 int flt_obj; /* number of times fault is on object page (2a) */ 360 int flt_prcopy; /* number of times fault promotes with copy (2b) */ 361 int flt_przero; /* number of times fault promotes with zerofill (2b) */ 362 363 /* daemon counters. XXX: should be 64-bit counters */ 364 int pdwoke; /* number of times daemon woke up */ 365 int pdrevs; /* number of times daemon rev'd clock hand */ 366 int pdswout; /* number of times daemon called for swapout */ 367 int pdfreed; /* number of pages daemon freed since boot */ 368 int pdscans; /* number of pages daemon scanned since boot */ 369 int pdanscan; /* number of anonymous pages scanned by daemon */ 370 int pdobscan; /* number of object pages scanned by daemon */ 371 int pdreact; /* number of pages daemon reactivated since boot */ 372 int pdbusy; /* number of times daemon found a busy page */ 373 int pdpageouts; /* number of times daemon started a pageout */ 374 int pdpending; /* number of times daemon got a pending pagout */ 375 int pddeact; /* number of pages daemon deactivates */ 376 int pdreanon; /* anon pages reactivated due to thresholds */ 377 int pdrefile; /* file pages reactivated due to thresholds */ 378 int pdreexec; /* executable pages reactivated due to thresholds */ 379 }; 380 381 /* 382 * The following structure is 64-bit alignment safe. New elements 383 * should only be added to the end of this structure so binary 384 * compatibility can be preserved. 385 */ 386 struct uvmexp_sysctl { 387 int64_t pagesize; 388 int64_t pagemask; 389 int64_t pageshift; 390 int64_t npages; 391 int64_t free; 392 int64_t active; 393 int64_t inactive; 394 int64_t paging; 395 int64_t wired; 396 int64_t zeropages; 397 int64_t reserve_pagedaemon; 398 int64_t reserve_kernel; 399 int64_t freemin; 400 int64_t freetarg; 401 int64_t inactarg; /* unused */ 402 int64_t wiredmax; 403 int64_t nswapdev; 404 int64_t swpages; 405 int64_t swpginuse; 406 int64_t swpgonly; 407 int64_t nswget; 408 int64_t unused1; /* used to be nanon */ 409 int64_t cpuhit; 410 int64_t cpumiss; 411 int64_t faults; 412 int64_t traps; 413 int64_t intrs; 414 int64_t swtch; 415 int64_t softs; 416 int64_t syscalls; 417 int64_t pageins; 418 int64_t swapins; 419 int64_t swapouts; 420 int64_t pgswapin; 421 int64_t pgswapout; 422 int64_t forks; 423 int64_t forks_ppwait; 424 int64_t forks_sharevm; 425 int64_t pga_zerohit; 426 int64_t pga_zeromiss; 427 int64_t zeroaborts; 428 int64_t fltnoram; 429 int64_t fltnoanon; 430 int64_t fltpgwait; 431 int64_t fltpgrele; 432 int64_t fltrelck; 433 int64_t fltrelckok; 434 int64_t fltanget; 435 int64_t fltanretry; 436 int64_t fltamcopy; 437 int64_t fltnamap; 438 int64_t fltnomap; 439 int64_t fltlget; 440 int64_t fltget; 441 int64_t flt_anon; 442 int64_t flt_acow; 443 int64_t flt_obj; 444 int64_t flt_prcopy; 445 int64_t flt_przero; 446 int64_t pdwoke; 447 int64_t pdrevs; 448 int64_t pdswout; 449 int64_t pdfreed; 450 int64_t pdscans; 451 int64_t pdanscan; 452 int64_t pdobscan; 453 int64_t pdreact; 454 int64_t pdbusy; 455 int64_t pdpageouts; 456 int64_t pdpending; 457 int64_t pddeact; 458 int64_t anonpages; 459 int64_t filepages; 460 int64_t execpages; 461 int64_t colorhit; 462 int64_t colormiss; 463 int64_t ncolors; 464 }; 465 466 #ifdef _KERNEL 467 /* we need this before including uvm_page.h on some platforms */ 468 extern struct uvmexp uvmexp; 469 #endif 470 471 /* 472 * Finally, bring in standard UVM headers. 473 */ 474 #include <sys/vmmeter.h> 475 #include <sys/queue.h> 476 #include <sys/lock.h> 477 #include <uvm/uvm_param.h> 478 #include <uvm/uvm_prot.h> 479 #include <uvm/uvm_page.h> 480 #include <uvm/uvm_pmap.h> 481 #include <uvm/uvm_map.h> 482 #include <uvm/uvm_pager.h> 483 484 /* 485 * helpers for calling ubc_release() 486 */ 487 #ifdef PMAP_CACHE_VIVT 488 #define UBC_WANT_UNMAP(vp) (((vp)->v_iflag & VI_TEXT) != 0) 489 #else 490 #define UBC_WANT_UNMAP(vp) false 491 #endif 492 #define UBC_UNMAP_FLAG(vp) (UBC_WANT_UNMAP(vp) ? UBC_UNMAP : 0) 493 494 /* 495 * Shareable process virtual address space. 496 * May eventually be merged with vm_map. 497 * Several fields are temporary (text, data stuff). 498 */ 499 struct vmspace { 500 struct vm_map vm_map; /* VM address map */ 501 int vm_refcnt; /* number of references * 502 * note: protected by vm_map.ref_lock */ 503 void * vm_shm; /* SYS5 shared memory private data XXX */ 504 /* we copy from vm_startcopy to the end of the structure on fork */ 505 #define vm_startcopy vm_rssize 506 segsz_t vm_rssize; /* current resident set size in pages */ 507 segsz_t vm_swrss; /* resident set size before last swap */ 508 segsz_t vm_tsize; /* text size (pages) XXX */ 509 segsz_t vm_dsize; /* data size (pages) XXX */ 510 segsz_t vm_ssize; /* stack size (pages) */ 511 segsz_t vm_issize; /* initial unmapped stack size (pages) */ 512 void * vm_taddr; /* user virtual address of text XXX */ 513 void * vm_daddr; /* user virtual address of data XXX */ 514 void *vm_maxsaddr; /* user VA at max stack growth */ 515 void *vm_minsaddr; /* user VA at top of stack */ 516 size_t vm_aslr_delta_mmap; /* mmap() random delta for ASLR */ 517 }; 518 #define VMSPACE_IS_KERNEL_P(vm) VM_MAP_IS_KERNEL(&(vm)->vm_map) 519 520 #ifdef _KERNEL 521 522 /* 523 * used to keep state while iterating over the map for a core dump. 524 */ 525 struct uvm_coredump_state { 526 void *cookie; /* opaque for the caller */ 527 vaddr_t start; /* start of region */ 528 vaddr_t realend; /* real end of region */ 529 vaddr_t end; /* virtual end of region */ 530 vm_prot_t prot; /* protection of region */ 531 int flags; /* flags; see below */ 532 }; 533 534 #define UVM_COREDUMP_STACK 0x01 /* region is user stack */ 535 536 /* 537 * Structure containig uvm reclaim hooks, uvm_reclaim_list is guarded by 538 * uvm_reclaim_lock. 539 */ 540 struct uvm_reclaim_hook { 541 void (*uvm_reclaim_hook)(void); 542 SLIST_ENTRY(uvm_reclaim_hook) uvm_reclaim_next; 543 }; 544 545 void uvm_reclaim_init(void); 546 void uvm_reclaim_hook_add(struct uvm_reclaim_hook *); 547 void uvm_reclaim_hook_del(struct uvm_reclaim_hook *); 548 549 /* 550 * the various kernel maps, owned by MD code 551 */ 552 extern struct vm_map *kernel_map; 553 extern struct vm_map *kmem_map; 554 extern struct vm_map *mb_map; 555 extern struct vm_map *phys_map; 556 557 /* 558 * macros 559 */ 560 561 #define vm_resident_count(vm) (pmap_resident_count((vm)->vm_map.pmap)) 562 563 #include <sys/mallocvar.h> 564 MALLOC_DECLARE(M_VMMAP); 565 MALLOC_DECLARE(M_VMPMAP); 566 567 /* vm_machdep.c */ 568 void vmapbuf(struct buf *, vsize_t); 569 void vunmapbuf(struct buf *, vsize_t); 570 #ifndef cpu_swapin 571 void cpu_swapin(struct lwp *); 572 #endif 573 #ifndef cpu_swapout 574 void cpu_swapout(struct lwp *); 575 #endif 576 577 /* uvm_aobj.c */ 578 struct uvm_object *uao_create(vsize_t, int); 579 void uao_detach(struct uvm_object *); 580 void uao_reference(struct uvm_object *); 581 582 /* uvm_bio.c */ 583 void ubc_init(void); 584 void * ubc_alloc(struct uvm_object *, voff_t, vsize_t *, int, 585 int); 586 void ubc_release(void *, int); 587 int ubc_uiomove(struct uvm_object *, struct uio *, vsize_t, 588 int, int); 589 590 /* uvm_emap.c */ 591 void uvm_emap_sysinit(void); 592 #ifdef __HAVE_PMAP_EMAP 593 void uvm_emap_switch(lwp_t *); 594 #else 595 #define uvm_emap_switch(l) 596 #endif 597 598 u_int uvm_emap_gen_return(void); 599 void uvm_emap_update(u_int); 600 601 vaddr_t uvm_emap_alloc(vsize_t, bool); 602 void uvm_emap_free(vaddr_t, size_t); 603 604 void uvm_emap_enter(vaddr_t, struct vm_page **, u_int); 605 void uvm_emap_remove(vaddr_t, vsize_t); 606 607 #ifdef __HAVE_PMAP_EMAP 608 void uvm_emap_consume(u_int); 609 u_int uvm_emap_produce(void); 610 #else 611 #define uvm_emap_consume(x) 612 #define uvm_emap_produce() UVM_EMAP_INACTIVE 613 #endif 614 615 /* uvm_fault.c */ 616 #define uvm_fault(m, a, p) uvm_fault_internal(m, a, p, 0) 617 int uvm_fault_internal(struct vm_map *, vaddr_t, vm_prot_t, int); 618 /* handle a page fault */ 619 620 /* uvm_glue.c */ 621 #if defined(KGDB) 622 void uvm_chgkprot(void *, size_t, int); 623 #endif 624 void uvm_proc_fork(struct proc *, struct proc *, bool); 625 void uvm_lwp_fork(struct lwp *, struct lwp *, 626 void *, size_t, void (*)(void *), void *); 627 int uvm_coredump_walkmap(struct proc *, 628 void *, 629 int (*)(struct proc *, void *, 630 struct uvm_coredump_state *), void *); 631 void uvm_proc_exit(struct proc *); 632 void uvm_lwp_exit(struct lwp *); 633 void uvm_init_limits(struct proc *); 634 bool uvm_kernacc(void *, size_t, int); 635 __dead void uvm_scheduler(void); 636 void uvm_kick_scheduler(void); 637 void uvm_swapin(struct lwp *); 638 bool uvm_uarea_alloc(vaddr_t *); 639 void uvm_uarea_free(vaddr_t, struct cpu_info *); 640 int uvm_vslock(struct vmspace *, void *, size_t, vm_prot_t); 641 void uvm_vsunlock(struct vmspace *, void *, size_t); 642 void uvm_lwp_hold(struct lwp *); 643 void uvm_lwp_rele(struct lwp *); 644 void uvm_cpu_attach(struct cpu_info *); 645 646 647 /* uvm_init.c */ 648 void uvm_init(void); 649 650 /* uvm_io.c */ 651 int uvm_io(struct vm_map *, struct uio *); 652 653 /* uvm_km.c */ 654 vaddr_t uvm_km_alloc(struct vm_map *, vsize_t, vsize_t, 655 uvm_flag_t); 656 void uvm_km_free(struct vm_map *, vaddr_t, vsize_t, 657 uvm_flag_t); 658 659 struct vm_map *uvm_km_suballoc(struct vm_map *, vaddr_t *, 660 vaddr_t *, vsize_t, int, bool, 661 struct vm_map_kernel *); 662 vaddr_t uvm_km_alloc_poolpage(struct vm_map *, bool); 663 void uvm_km_free_poolpage(struct vm_map *, vaddr_t); 664 vaddr_t uvm_km_alloc_poolpage_cache(struct vm_map *, bool); 665 void uvm_km_free_poolpage_cache(struct vm_map *, vaddr_t); 666 void uvm_km_vacache_init(struct vm_map *, 667 const char *, size_t); 668 669 /* uvm_map.c */ 670 int uvm_map(struct vm_map *, vaddr_t *, vsize_t, 671 struct uvm_object *, voff_t, vsize_t, 672 uvm_flag_t); 673 int uvm_map_pageable(struct vm_map *, vaddr_t, 674 vaddr_t, bool, int); 675 int uvm_map_pageable_all(struct vm_map *, int, vsize_t); 676 bool uvm_map_checkprot(struct vm_map *, vaddr_t, 677 vaddr_t, vm_prot_t); 678 int uvm_map_protect(struct vm_map *, vaddr_t, 679 vaddr_t, vm_prot_t, bool); 680 struct vmspace *uvmspace_alloc(vaddr_t, vaddr_t); 681 void uvmspace_init(struct vmspace *, struct pmap *, 682 vaddr_t, vaddr_t); 683 void uvmspace_exec(struct lwp *, vaddr_t, vaddr_t); 684 struct vmspace *uvmspace_fork(struct vmspace *); 685 void uvmspace_addref(struct vmspace *); 686 void uvmspace_free(struct vmspace *); 687 void uvmspace_share(struct proc *, struct proc *); 688 void uvmspace_unshare(struct lwp *); 689 690 void uvm_whatis(uintptr_t, void (*)(const char *, ...)); 691 692 /* uvm_meter.c */ 693 void uvm_meter(void); 694 int uvm_sysctl(int *, u_int, void *, size_t *, 695 void *, size_t, struct proc *); 696 int uvm_pctparam_check(struct uvm_pctparam *, int); 697 void uvm_pctparam_set(struct uvm_pctparam *, int); 698 int uvm_pctparam_get(struct uvm_pctparam *); 699 void uvm_pctparam_init(struct uvm_pctparam *, int, 700 int (*)(struct uvm_pctparam *, int)); 701 int uvm_pctparam_createsysctlnode(struct uvm_pctparam *, 702 const char *, const char *); 703 704 /* uvm_mmap.c */ 705 int uvm_mmap(struct vm_map *, vaddr_t *, vsize_t, 706 vm_prot_t, vm_prot_t, int, 707 void *, voff_t, vsize_t); 708 vaddr_t uvm_default_mapaddr(struct proc *, vaddr_t, vsize_t); 709 710 /* uvm_mremap.c */ 711 int uvm_mremap(struct vm_map *, vaddr_t, vsize_t, 712 struct vm_map *, vaddr_t *, vsize_t, 713 struct proc *, int); 714 715 /* uvm_object.c */ 716 int uobj_wirepages(struct uvm_object *uobj, off_t start, 717 off_t end); 718 void uobj_unwirepages(struct uvm_object *uobj, off_t start, 719 off_t end); 720 721 /* uvm_page.c */ 722 struct vm_page *uvm_pagealloc_strat(struct uvm_object *, 723 voff_t, struct vm_anon *, int, int, int); 724 #define uvm_pagealloc(obj, off, anon, flags) \ 725 uvm_pagealloc_strat((obj), (off), (anon), (flags), \ 726 UVM_PGA_STRAT_NORMAL, 0) 727 void uvm_pagereplace(struct vm_page *, 728 struct vm_page *); 729 void uvm_pagerealloc(struct vm_page *, 730 struct uvm_object *, voff_t); 731 /* Actually, uvm_page_physload takes PF#s which need their own type */ 732 void uvm_page_physload(paddr_t, paddr_t, paddr_t, 733 paddr_t, int); 734 void uvm_setpagesize(void); 735 736 /* uvm_pager.c */ 737 void uvm_aio_biodone(struct buf *); 738 void uvm_aio_aiodone(struct buf *); 739 void uvm_aio_aiodone_pages(struct vm_page **, int, bool, 740 int); 741 742 /* uvm_pdaemon.c */ 743 void uvm_pageout(void *); 744 struct work; 745 void uvm_aiodone_worker(struct work *, void *); 746 void uvm_pageout_start(int); 747 void uvm_pageout_done(int); 748 void uvm_estimatepageable(int *, int *); 749 750 /* uvm_pglist.c */ 751 int uvm_pglistalloc(psize_t, paddr_t, paddr_t, 752 paddr_t, paddr_t, struct pglist *, int, int); 753 void uvm_pglistfree(struct pglist *); 754 755 /* uvm_swap.c */ 756 void uvm_swap_init(void); 757 758 /* uvm_unix.c */ 759 int uvm_grow(struct proc *, vaddr_t); 760 761 /* uvm_user.c */ 762 void uvm_deallocate(struct vm_map *, vaddr_t, vsize_t); 763 764 /* uvm_vnode.c */ 765 void uvm_vnp_setsize(struct vnode *, voff_t); 766 void uvm_vnp_setwritesize(struct vnode *, voff_t); 767 int uvn_findpages(struct uvm_object *, voff_t, 768 int *, struct vm_page **, int); 769 void uvm_vnp_zerorange(struct vnode *, off_t, size_t); 770 bool uvn_text_p(struct uvm_object *); 771 bool uvn_clean_p(struct uvm_object *); 772 bool uvn_needs_writefault_p(struct uvm_object *); 773 774 /* kern_malloc.c */ 775 void kmeminit_nkmempages(void); 776 void kmeminit(void); 777 extern int nkmempages; 778 779 #endif /* _KERNEL */ 780 781 #endif /* _UVM_UVM_EXTERN_H_ */ 782
Indexes created Sun Sep 21 20:09:37 GMT 2025