uvm_extern.h revision 1.119
1 /* $NetBSD: uvm_extern.h,v 1.119 2006/10/05 14:48:33 chs 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 /* 0x3: will need, 0x4: dontneed */ 136 #define UVM_ADV_MASK 0x7 /* mask */ 137 138 /* bits 0xffff0000: mapping flags */ 139 #define UVM_FLAG_FIXED 0x010000 /* find space */ 140 #define UVM_FLAG_OVERLAY 0x020000 /* establish overlay */ 141 #define UVM_FLAG_NOMERGE 0x040000 /* don't merge map entries */ 142 #define UVM_FLAG_COPYONW 0x080000 /* set copy_on_write flag */ 143 #define UVM_FLAG_AMAPPAD 0x100000 /* for bss: pad amap to reduce malloc() */ 144 #define UVM_FLAG_TRYLOCK 0x200000 /* fail if we can not lock map */ 145 #define UVM_FLAG_NOWAIT 0x400000 /* not allowed to sleep */ 146 #define UVM_FLAG_QUANTUM 0x800000 /* entry never be splitted later */ 147 #define UVM_FLAG_WAITVA 0x1000000 /* wait for va */ 148 #define UVM_FLAG_VAONLY 0x2000000 /* unmap: no pages are mapped */ 149 150 /* macros to extract info */ 151 #define UVM_PROTECTION(X) ((X) & UVM_PROT_MASK) 152 #define UVM_INHERIT(X) (((X) & UVM_INH_MASK) >> 4) 153 #define UVM_MAXPROTECTION(X) (((X) >> 8) & UVM_PROT_MASK) 154 #define UVM_ADVICE(X) (((X) >> 12) & UVM_ADV_MASK) 155 156 #define UVM_MAPFLAG(PROT,MAXPROT,INH,ADVICE,FLAGS) \ 157 (((MAXPROT) << 8)|(PROT)|(INH)|((ADVICE) << 12)|(FLAGS)) 158 159 /* magic offset value: offset not known(obj) or don't care(!obj) */ 160 #define UVM_UNKNOWN_OFFSET ((voff_t) -1) 161 162 /* 163 * the following defines are for uvm_km_alloc/free's flags 164 */ 165 #define UVM_KMF_WIRED 0x1 /* allocation type: wired */ 166 #define UVM_KMF_PAGEABLE 0x2 /* allocation type: pageable */ 167 #define UVM_KMF_VAONLY 0x4 /* allocation type: VA only */ 168 #define UVM_KMF_TYPEMASK (UVM_KMF_VAONLY | UVM_KMF_PAGEABLE | UVM_KMF_WIRED) 169 #define UVM_KMF_CANFAIL 0x8 /* caller handles failure */ 170 #define UVM_KMF_ZERO 0x10 /* want zero filled memory */ 171 #define UVM_KMF_EXEC 0x20 /* need executable mapping */ 172 #define UVM_KMF_TRYLOCK UVM_FLAG_TRYLOCK /* try locking only */ 173 #define UVM_KMF_NOWAIT UVM_FLAG_NOWAIT /* not allowed to sleep */ 174 #define UVM_KMF_WAITVA UVM_FLAG_WAITVA /* sleep for va */ 175 176 /* 177 * the following defines the strategies for uvm_pagealloc_strat() 178 */ 179 #define UVM_PGA_STRAT_NORMAL 0 /* high -> low free list walk */ 180 #define UVM_PGA_STRAT_ONLY 1 /* only specified free list */ 181 #define UVM_PGA_STRAT_FALLBACK 2 /* ONLY falls back on NORMAL */ 182 183 /* 184 * flags for uvm_pagealloc_strat() 185 */ 186 #define UVM_PGA_USERESERVE 0x0001 /* ok to use reserve pages */ 187 #define UVM_PGA_ZERO 0x0002 /* returned page must be zero'd */ 188 189 /* 190 * flags for ubc_alloc() 191 */ 192 #define UBC_READ 0x01 193 #define UBC_WRITE 0x02 194 #define UBC_FAULTBUSY 0x04 195 196 /* 197 * flags for ubc_release() 198 */ 199 #define UBC_UNMAP 0x01 200 201 /* 202 * helpers for calling ubc_release() 203 */ 204 #ifdef PMAP_CACHE_VIVT 205 #define UBC_WANT_UNMAP(vp) (((vp)->v_flag & VTEXT) != 0) 206 #else 207 #define UBC_WANT_UNMAP(vp) FALSE 208 #endif 209 210 /* 211 * flags for uvn_findpages(). 212 */ 213 #define UFP_ALL 0x00 214 #define UFP_NOWAIT 0x01 215 #define UFP_NOALLOC 0x02 216 #define UFP_NOCACHE 0x04 217 #define UFP_NORDONLY 0x08 218 #define UFP_DIRTYONLY 0x10 219 #define UFP_BACKWARD 0x20 220 221 /* 222 * lockflags that control the locking behavior of various functions. 223 */ 224 #define UVM_LK_ENTER 0x00000001 /* map locked on entry */ 225 #define UVM_LK_EXIT 0x00000002 /* leave map locked on exit */ 226 227 /* 228 * structures 229 */ 230 231 struct buf; 232 struct core; 233 struct loadavg; 234 struct mount; 235 struct pglist; 236 struct proc; 237 struct uio; 238 struct uvm_object; 239 struct vm_anon; 240 struct vmspace; 241 struct pmap; 242 struct vnode; 243 struct pool; 244 struct simplelock; 245 struct vm_map_entry; 246 struct vm_map; 247 struct vm_page; 248 struct vmtotal; 249 250 /* 251 * uvm_pctparam: parameter to be shown as percentage to user. 252 */ 253 254 #define UVM_PCTPARAM_SHIFT 8 255 #define UVM_PCTPARAM_SCALE (1 << UVM_PCTPARAM_SHIFT) 256 #define UVM_PCTPARAM_APPLY(pct, x) \ 257 (((x) * (pct)->pct_scaled) >> UVM_PCTPARAM_SHIFT) 258 struct uvm_pctparam { 259 int pct_pct; /* percent [0, 100] */ /* should be the first member */ 260 int pct_scaled; 261 int (*pct_check)(struct uvm_pctparam *, int); 262 }; 263 264 /* 265 * uvmexp: global data structures that are exported to parts of the kernel 266 * other than the vm system. 267 */ 268 269 struct uvmexp { 270 /* vm_page constants */ 271 int pagesize; /* size of a page (PAGE_SIZE): must be power of 2 */ 272 int pagemask; /* page mask */ 273 int pageshift; /* page shift */ 274 275 /* vm_page counters */ 276 int npages; /* number of pages we manage */ 277 int free; /* number of free pages */ 278 int paging; /* number of pages in the process of being paged out */ 279 int wired; /* number of wired pages */ 280 281 /* 282 * Adding anything before this line will break binary compatibility 283 * with top(1) on NetBSD 1.5. 284 */ 285 286 int ncolors; /* number of page color buckets: must be p-o-2 */ 287 int colormask; /* color bucket mask */ 288 289 int zeropages; /* number of zero'd pages */ 290 int reserve_pagedaemon; /* number of pages reserved for pagedaemon */ 291 int reserve_kernel; /* number of pages reserved for kernel */ 292 int anonpages; /* number of pages used by anon mappings */ 293 int filepages; /* number of pages used by cached file data */ 294 int execpages; /* number of pages used by cached exec data */ 295 296 /* pageout params */ 297 int freemin; /* min number of free pages */ 298 int freetarg; /* target number of free pages */ 299 int wiredmax; /* max number of wired pages */ 300 301 /* swap */ 302 int nswapdev; /* number of configured swap devices in system */ 303 int swpages; /* number of PAGE_SIZE'ed swap pages */ 304 int swpgavail; /* number of swap pages currently available */ 305 int swpginuse; /* number of swap pages in use */ 306 int swpgonly; /* number of swap pages in use, not also in RAM */ 307 int nswget; /* number of times fault calls uvm_swap_get() */ 308 309 /* stat counters. XXX: should be 64-bit counters */ 310 int faults; /* page fault count */ 311 int traps; /* trap count */ 312 int intrs; /* interrupt count */ 313 int swtch; /* context switch count */ 314 int softs; /* software interrupt count */ 315 int syscalls; /* system calls */ 316 int pageins; /* pagein operation count */ 317 /* pageouts are in pdpageouts below */ 318 int swapins; /* swapins */ 319 int swapouts; /* swapouts */ 320 int pgswapin; /* pages swapped in */ 321 int pgswapout; /* pages swapped out */ 322 int forks; /* forks */ 323 int forks_ppwait; /* forks where parent waits */ 324 int forks_sharevm; /* forks where vmspace is shared */ 325 int pga_zerohit; /* pagealloc where zero wanted and zero 326 was available */ 327 int pga_zeromiss; /* pagealloc where zero wanted and zero 328 not available */ 329 int zeroaborts; /* number of times page zeroing was 330 aborted */ 331 int colorhit; /* pagealloc where we got optimal color */ 332 int colormiss; /* pagealloc where we didn't */ 333 334 /* fault subcounters. XXX: should be 64-bit counters */ 335 int fltnoram; /* number of times fault was out of ram */ 336 int fltnoanon; /* number of times fault was out of anons */ 337 int fltpgwait; /* number of times fault had to wait on a page */ 338 int fltpgrele; /* number of times fault found a released page */ 339 int fltrelck; /* number of times fault relock called */ 340 int fltrelckok; /* number of times fault relock is a success */ 341 int fltanget; /* number of times fault gets anon page */ 342 int fltanretry; /* number of times fault retrys an anon get */ 343 int fltamcopy; /* number of times fault clears "needs copy" */ 344 int fltnamap; /* number of times fault maps a neighbor anon page */ 345 int fltnomap; /* number of times fault maps a neighbor obj page */ 346 int fltlget; /* number of times fault does a locked pgo_get */ 347 int fltget; /* number of times fault does an unlocked get */ 348 int flt_anon; /* number of times fault anon (case 1a) */ 349 int flt_acow; /* number of times fault anon cow (case 1b) */ 350 int flt_obj; /* number of times fault is on object page (2a) */ 351 int flt_prcopy; /* number of times fault promotes with copy (2b) */ 352 int flt_przero; /* number of times fault promotes with zerofill (2b) */ 353 354 /* daemon counters. XXX: should be 64-bit counters */ 355 int pdwoke; /* number of times daemon woke up */ 356 int pdrevs; /* number of times daemon rev'd clock hand */ 357 int pdswout; /* number of times daemon called for swapout */ 358 int pdfreed; /* number of pages daemon freed since boot */ 359 int pdscans; /* number of pages daemon scanned since boot */ 360 int pdanscan; /* number of anonymous pages scanned by daemon */ 361 int pdobscan; /* number of object pages scanned by daemon */ 362 int pdreact; /* number of pages daemon reactivated since boot */ 363 int pdbusy; /* number of times daemon found a busy page */ 364 int pdpageouts; /* number of times daemon started a pageout */ 365 int pdpending; /* number of times daemon got a pending pagout */ 366 int pddeact; /* number of pages daemon deactivates */ 367 int pdreanon; /* anon pages reactivated due to thresholds */ 368 int pdrefile; /* file pages reactivated due to thresholds */ 369 int pdreexec; /* executable pages reactivated due to thresholds */ 370 }; 371 372 /* 373 * The following structure is 64-bit alignment safe. New elements 374 * should only be added to the end of this structure so binary 375 * compatibility can be preserved. 376 */ 377 struct uvmexp_sysctl { 378 int64_t pagesize; 379 int64_t pagemask; 380 int64_t pageshift; 381 int64_t npages; 382 int64_t free; 383 int64_t active; 384 int64_t inactive; 385 int64_t paging; 386 int64_t wired; 387 int64_t zeropages; 388 int64_t reserve_pagedaemon; 389 int64_t reserve_kernel; 390 int64_t freemin; 391 int64_t freetarg; 392 int64_t inactarg; /* unused */ 393 int64_t wiredmax; 394 int64_t nswapdev; 395 int64_t swpages; 396 int64_t swpginuse; 397 int64_t swpgonly; 398 int64_t nswget; 399 int64_t unused1; /* used to be nanon */ 400 int64_t unused2; /* used to be nanonneeded */ 401 int64_t unused3; /* used to be nfreeanon */ 402 int64_t faults; 403 int64_t traps; 404 int64_t intrs; 405 int64_t swtch; 406 int64_t softs; 407 int64_t syscalls; 408 int64_t pageins; 409 int64_t swapins; 410 int64_t swapouts; 411 int64_t pgswapin; 412 int64_t pgswapout; 413 int64_t forks; 414 int64_t forks_ppwait; 415 int64_t forks_sharevm; 416 int64_t pga_zerohit; 417 int64_t pga_zeromiss; 418 int64_t zeroaborts; 419 int64_t fltnoram; 420 int64_t fltnoanon; 421 int64_t fltpgwait; 422 int64_t fltpgrele; 423 int64_t fltrelck; 424 int64_t fltrelckok; 425 int64_t fltanget; 426 int64_t fltanretry; 427 int64_t fltamcopy; 428 int64_t fltnamap; 429 int64_t fltnomap; 430 int64_t fltlget; 431 int64_t fltget; 432 int64_t flt_anon; 433 int64_t flt_acow; 434 int64_t flt_obj; 435 int64_t flt_prcopy; 436 int64_t flt_przero; 437 int64_t pdwoke; 438 int64_t pdrevs; 439 int64_t pdswout; 440 int64_t pdfreed; 441 int64_t pdscans; 442 int64_t pdanscan; 443 int64_t pdobscan; 444 int64_t pdreact; 445 int64_t pdbusy; 446 int64_t pdpageouts; 447 int64_t pdpending; 448 int64_t pddeact; 449 int64_t anonpages; 450 int64_t filepages; 451 int64_t execpages; 452 int64_t colorhit; 453 int64_t colormiss; 454 int64_t ncolors; 455 }; 456 457 #ifdef _KERNEL 458 /* we need this before including uvm_page.h on some platforms */ 459 extern struct uvmexp uvmexp; 460 #endif 461 462 /* 463 * Finally, bring in standard UVM headers. 464 */ 465 #include <sys/vmmeter.h> 466 #include <sys/queue.h> 467 #include <sys/lock.h> 468 #include <uvm/uvm_param.h> 469 #include <uvm/uvm_prot.h> 470 #include <uvm/uvm_page.h> 471 #include <uvm/uvm_pmap.h> 472 #include <uvm/uvm_map.h> 473 #include <uvm/uvm_pager.h> 474 475 /* 476 * Shareable process virtual address space. 477 * May eventually be merged with vm_map. 478 * Several fields are temporary (text, data stuff). 479 */ 480 struct vmspace { 481 struct vm_map vm_map; /* VM address map */ 482 int vm_refcnt; /* number of references * 483 * note: protected by vm_map.ref_lock */ 484 caddr_t vm_shm; /* SYS5 shared memory private data XXX */ 485 /* we copy from vm_startcopy to the end of the structure on fork */ 486 #define vm_startcopy vm_rssize 487 segsz_t vm_rssize; /* current resident set size in pages */ 488 segsz_t vm_swrss; /* resident set size before last swap */ 489 segsz_t vm_tsize; /* text size (pages) XXX */ 490 segsz_t vm_dsize; /* data size (pages) XXX */ 491 segsz_t vm_ssize; /* stack size (pages) */ 492 caddr_t vm_taddr; /* user virtual address of text XXX */ 493 caddr_t vm_daddr; /* user virtual address of data XXX */ 494 caddr_t vm_maxsaddr; /* user VA at max stack growth */ 495 caddr_t vm_minsaddr; /* user VA at top of stack */ 496 }; 497 #define VMSPACE_IS_KERNEL_P(vm) VM_MAP_IS_KERNEL(&(vm)->vm_map) 498 499 #ifdef _KERNEL 500 501 extern struct pool *uvm_aiobuf_pool; 502 503 /* 504 * used to keep state while iterating over the map for a core dump. 505 */ 506 struct uvm_coredump_state { 507 void *cookie; /* opaque for the caller */ 508 vaddr_t start; /* start of region */ 509 vaddr_t realend; /* real end of region */ 510 vaddr_t end; /* virtual end of region */ 511 vm_prot_t prot; /* protection of region */ 512 int flags; /* flags; see below */ 513 }; 514 515 #define UVM_COREDUMP_STACK 0x01 /* region is user stack */ 516 517 /* 518 * the various kernel maps, owned by MD code 519 */ 520 extern struct vm_map *exec_map; 521 extern struct vm_map *kernel_map; 522 extern struct vm_map *kmem_map; 523 extern struct vm_map *mb_map; 524 extern struct vm_map *phys_map; 525 526 /* 527 * macros 528 */ 529 530 #define vm_resident_count(vm) (pmap_resident_count((vm)->vm_map.pmap)) 531 532 #include <sys/mallocvar.h> 533 MALLOC_DECLARE(M_VMMAP); 534 MALLOC_DECLARE(M_VMPMAP); 535 536 /* vm_machdep.c */ 537 void vmapbuf(struct buf *, vsize_t); 538 void vunmapbuf(struct buf *, vsize_t); 539 #ifndef cpu_swapin 540 void cpu_swapin(struct lwp *); 541 #endif 542 #ifndef cpu_swapout 543 void cpu_swapout(struct lwp *); 544 #endif 545 546 /* uvm_aobj.c */ 547 struct uvm_object *uao_create(vsize_t, int); 548 void uao_detach(struct uvm_object *); 549 void uao_detach_locked(struct uvm_object *); 550 void uao_reference(struct uvm_object *); 551 void uao_reference_locked(struct uvm_object *); 552 553 /* uvm_bio.c */ 554 void ubc_init(void); 555 void * ubc_alloc(struct uvm_object *, voff_t, vsize_t *, int, 556 int); 557 void ubc_release(void *, int); 558 void ubc_flush(struct uvm_object *, voff_t, voff_t); 559 560 /* uvm_fault.c */ 561 #define uvm_fault(m, a, p) uvm_fault_internal(m, a, p, 0) 562 int uvm_fault_internal(struct vm_map *, vaddr_t, vm_prot_t, int); 563 /* handle a page fault */ 564 565 /* uvm_glue.c */ 566 #if defined(KGDB) 567 void uvm_chgkprot(caddr_t, size_t, int); 568 #endif 569 void uvm_proc_fork(struct proc *, struct proc *, boolean_t); 570 void uvm_lwp_fork(struct lwp *, struct lwp *, 571 void *, size_t, void (*)(void *), void *); 572 int uvm_coredump_walkmap(struct proc *, 573 void *, 574 int (*)(struct proc *, void *, 575 struct uvm_coredump_state *), void *); 576 void uvm_proc_exit(struct proc *); 577 void uvm_lwp_exit(struct lwp *); 578 void uvm_init_limits(struct proc *); 579 boolean_t uvm_kernacc(caddr_t, size_t, int); 580 __dead void uvm_scheduler(void) __attribute__((noreturn)); 581 void uvm_swapin(struct lwp *); 582 boolean_t uvm_uarea_alloc(vaddr_t *); 583 void uvm_uarea_drain(boolean_t); 584 int uvm_vslock(struct vmspace *, void *, size_t, vm_prot_t); 585 void uvm_vsunlock(struct vmspace *, void *, size_t); 586 587 588 /* uvm_init.c */ 589 void uvm_init(void); 590 591 /* uvm_io.c */ 592 int uvm_io(struct vm_map *, struct uio *); 593 594 /* uvm_km.c */ 595 vaddr_t uvm_km_alloc(struct vm_map *, vsize_t, vsize_t, 596 uvm_flag_t); 597 void uvm_km_free(struct vm_map *, vaddr_t, vsize_t, 598 uvm_flag_t); 599 600 struct vm_map *uvm_km_suballoc(struct vm_map *, vaddr_t *, 601 vaddr_t *, vsize_t, int, boolean_t, 602 struct vm_map_kernel *); 603 vaddr_t uvm_km_alloc_poolpage(struct vm_map *, boolean_t); 604 void uvm_km_free_poolpage(struct vm_map *, vaddr_t); 605 vaddr_t uvm_km_alloc_poolpage_cache(struct vm_map *, boolean_t); 606 void uvm_km_free_poolpage_cache(struct vm_map *, vaddr_t); 607 void uvm_km_vacache_init(struct vm_map *, 608 const char *, size_t); 609 610 /* uvm_map.c */ 611 int uvm_map(struct vm_map *, vaddr_t *, vsize_t, 612 struct uvm_object *, voff_t, vsize_t, 613 uvm_flag_t); 614 int uvm_map_pageable(struct vm_map *, vaddr_t, 615 vaddr_t, boolean_t, int); 616 int uvm_map_pageable_all(struct vm_map *, int, vsize_t); 617 boolean_t uvm_map_checkprot(struct vm_map *, vaddr_t, 618 vaddr_t, vm_prot_t); 619 int uvm_map_protect(struct vm_map *, vaddr_t, 620 vaddr_t, vm_prot_t, boolean_t); 621 struct vmspace *uvmspace_alloc(vaddr_t, vaddr_t); 622 void uvmspace_init(struct vmspace *, struct pmap *, 623 vaddr_t, vaddr_t); 624 void uvmspace_exec(struct lwp *, vaddr_t, vaddr_t); 625 struct vmspace *uvmspace_fork(struct vmspace *); 626 void uvmspace_addref(struct vmspace *); 627 void uvmspace_free(struct vmspace *); 628 void uvmspace_share(struct proc *, struct proc *); 629 void uvmspace_unshare(struct lwp *); 630 631 632 /* uvm_meter.c */ 633 void uvm_meter(void); 634 int uvm_sysctl(int *, u_int, void *, size_t *, 635 void *, size_t, struct proc *); 636 int uvm_pctparam_check(struct uvm_pctparam *, int); 637 void uvm_pctparam_set(struct uvm_pctparam *, int); 638 int uvm_pctparam_get(struct uvm_pctparam *); 639 void uvm_pctparam_init(struct uvm_pctparam *, int, 640 int (*)(struct uvm_pctparam *, int)); 641 int uvm_pctparam_createsysctlnode(struct uvm_pctparam *, 642 const char *, const char *); 643 644 /* uvm_mmap.c */ 645 int uvm_mmap(struct vm_map *, vaddr_t *, vsize_t, 646 vm_prot_t, vm_prot_t, int, 647 void *, voff_t, vsize_t); 648 vaddr_t uvm_default_mapaddr(struct proc *, vaddr_t, vsize_t); 649 650 /* uvm_mremap.c */ 651 int uvm_mremap(struct vm_map *, vaddr_t, vsize_t, 652 struct vm_map *, vaddr_t *, vsize_t, 653 struct proc *, int); 654 #define UVM_MREMAP_FIXED 1 655 656 /* uvm_page.c */ 657 struct vm_page *uvm_pagealloc_strat(struct uvm_object *, 658 voff_t, struct vm_anon *, int, int, int); 659 #define uvm_pagealloc(obj, off, anon, flags) \ 660 uvm_pagealloc_strat((obj), (off), (anon), (flags), \ 661 UVM_PGA_STRAT_NORMAL, 0) 662 void uvm_pagereplace(struct vm_page *, 663 struct vm_page *); 664 void uvm_pagerealloc(struct vm_page *, 665 struct uvm_object *, voff_t); 666 /* Actually, uvm_page_physload takes PF#s which need their own type */ 667 void uvm_page_physload(paddr_t, paddr_t, paddr_t, 668 paddr_t, int); 669 void uvm_setpagesize(void); 670 671 /* uvm_pager.c */ 672 void uvm_aio_biodone1(struct buf *); 673 void uvm_aio_biodone(struct buf *); 674 void uvm_aio_aiodone(struct buf *); 675 676 /* uvm_pdaemon.c */ 677 void uvm_pageout(void *); 678 void uvm_aiodone_daemon(void *); 679 void uvm_estimatepageable(int *, int *); 680 681 /* uvm_pglist.c */ 682 int uvm_pglistalloc(psize_t, paddr_t, paddr_t, 683 paddr_t, paddr_t, struct pglist *, int, int); 684 void uvm_pglistfree(struct pglist *); 685 686 /* uvm_swap.c */ 687 void uvm_swap_init(void); 688 689 /* uvm_unix.c */ 690 int uvm_grow(struct proc *, vaddr_t); 691 692 /* uvm_user.c */ 693 void uvm_deallocate(struct vm_map *, vaddr_t, vsize_t); 694 695 /* uvm_vnode.c */ 696 void uvm_vnp_setsize(struct vnode *, voff_t); 697 void uvm_vnp_sync(struct mount *); 698 struct uvm_object *uvn_attach(void *, vm_prot_t); 699 int uvn_findpages(struct uvm_object *, voff_t, 700 int *, struct vm_page **, int); 701 void uvm_vnp_zerorange(struct vnode *, off_t, size_t); 702 703 /* kern_malloc.c */ 704 void kmeminit_nkmempages(void); 705 void kmeminit(void); 706 extern int nkmempages; 707 708 #endif /* _KERNEL */ 709 710 #endif /* _UVM_UVM_EXTERN_H_ */ 711
Indexes created Sun Sep 21 20:09:37 GMT 2025