uvm_extern.h revision 1.141
1 /* $NetBSD: uvm_extern.h,v 1.141 2007/12/24 15:46:46 perry 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 0x001 193 #define UBC_WRITE 0x002 194 #define UBC_FAULTBUSY 0x004 195 196 /* 197 * flags for ubc_release() 198 */ 199 #define UBC_UNMAP 0x010 200 201 /* 202 * flags for ubc_uiomve() 203 */ 204 #define UBC_PARTIALOK 0x100 205 206 /* 207 * flags for uvn_findpages(). 208 */ 209 #define UFP_ALL 0x00 210 #define UFP_NOWAIT 0x01 211 #define UFP_NOALLOC 0x02 212 #define UFP_NOCACHE 0x04 213 #define UFP_NORDONLY 0x08 214 #define UFP_DIRTYONLY 0x10 215 #define UFP_BACKWARD 0x20 216 217 /* 218 * lockflags that control the locking behavior of various functions. 219 */ 220 #define UVM_LK_ENTER 0x00000001 /* map locked on entry */ 221 #define UVM_LK_EXIT 0x00000002 /* leave map locked on exit */ 222 223 /* 224 * structures 225 */ 226 227 struct buf; 228 struct core; 229 struct loadavg; 230 struct mount; 231 struct pglist; 232 struct proc; 233 struct uio; 234 struct uvm_object; 235 struct vm_anon; 236 struct vmspace; 237 struct pmap; 238 struct vnode; 239 struct pool; 240 struct simplelock; 241 struct vm_map_entry; 242 struct vm_map; 243 struct vm_page; 244 struct vmtotal; 245 246 /* 247 * uvm_pctparam: parameter to be shown as percentage to user. 248 */ 249 250 #define UVM_PCTPARAM_SHIFT 8 251 #define UVM_PCTPARAM_SCALE (1 << UVM_PCTPARAM_SHIFT) 252 #define UVM_PCTPARAM_APPLY(pct, x) \ 253 (((x) * (pct)->pct_scaled) >> UVM_PCTPARAM_SHIFT) 254 struct uvm_pctparam { 255 int pct_pct; /* percent [0, 100] */ /* should be the first member */ 256 int pct_scaled; 257 int (*pct_check)(struct uvm_pctparam *, int); 258 }; 259 260 /* 261 * uvmexp: global data structures that are exported to parts of the kernel 262 * other than the vm system. 263 */ 264 265 struct uvmexp { 266 /* vm_page constants */ 267 int pagesize; /* size of a page (PAGE_SIZE): must be power of 2 */ 268 int pagemask; /* page mask */ 269 int pageshift; /* page shift */ 270 271 /* vm_page counters */ 272 int npages; /* number of pages we manage */ 273 int free; /* number of free pages */ 274 int paging; /* number of pages in the process of being paged out */ 275 int wired; /* number of wired pages */ 276 277 /* 278 * Adding anything before this line will break binary compatibility 279 * with top(1) on NetBSD 1.5. 280 */ 281 282 int ncolors; /* number of page color buckets: must be p-o-2 */ 283 int colormask; /* color bucket mask */ 284 285 int zeropages; /* number of zero'd pages */ 286 int reserve_pagedaemon; /* number of pages reserved for pagedaemon */ 287 int reserve_kernel; /* number of pages reserved for kernel */ 288 unsigned anonpages; /* number of pages used by anon mappings */ 289 unsigned filepages; /* number of pages used by cached file data */ 290 unsigned execpages; /* number of pages used by cached exec data */ 291 292 /* pageout params */ 293 int freemin; /* min number of free pages */ 294 int freetarg; /* target number of free pages */ 295 int wiredmax; /* max number of wired pages */ 296 297 /* swap */ 298 int nswapdev; /* number of configured swap devices in system */ 299 int swpages; /* number of PAGE_SIZE'ed swap pages */ 300 int swpgavail; /* number of swap pages currently available */ 301 int swpginuse; /* number of swap pages in use */ 302 int swpgonly; /* number of swap pages in use, not also in RAM */ 303 int nswget; /* number of times fault calls uvm_swap_get() */ 304 305 /* stat counters. XXX: should be 64-bit counters */ 306 int faults; /* page fault count */ 307 int traps; /* trap count */ 308 int intrs; /* interrupt count */ 309 int swtch; /* context switch count */ 310 int softs; /* software interrupt count */ 311 int syscalls; /* system calls */ 312 int pageins; /* pagein operation count */ 313 /* pageouts are in pdpageouts below */ 314 int swapins; /* swapins */ 315 int swapouts; /* swapouts */ 316 int pgswapin; /* pages swapped in */ 317 int pgswapout; /* pages swapped out */ 318 int forks; /* forks */ 319 int forks_ppwait; /* forks where parent waits */ 320 int forks_sharevm; /* forks where vmspace is shared */ 321 int pga_zerohit; /* pagealloc where zero wanted and zero 322 was available */ 323 int pga_zeromiss; /* pagealloc where zero wanted and zero 324 not available */ 325 int zeroaborts; /* number of times page zeroing was 326 aborted */ 327 int colorhit; /* pagealloc where we got optimal color */ 328 int colormiss; /* pagealloc where we didn't */ 329 330 /* fault subcounters. XXX: should be 64-bit counters */ 331 int fltnoram; /* number of times fault was out of ram */ 332 int fltnoanon; /* number of times fault was out of anons */ 333 int fltpgwait; /* number of times fault had to wait on a page */ 334 int fltpgrele; /* number of times fault found a released page */ 335 int fltrelck; /* number of times fault relock called */ 336 int fltrelckok; /* number of times fault relock is a success */ 337 int fltanget; /* number of times fault gets anon page */ 338 int fltanretry; /* number of times fault retrys an anon get */ 339 int fltamcopy; /* number of times fault clears "needs copy" */ 340 int fltnamap; /* number of times fault maps a neighbor anon page */ 341 int fltnomap; /* number of times fault maps a neighbor obj page */ 342 int fltlget; /* number of times fault does a locked pgo_get */ 343 int fltget; /* number of times fault does an unlocked get */ 344 int flt_anon; /* number of times fault anon (case 1a) */ 345 int flt_acow; /* number of times fault anon cow (case 1b) */ 346 int flt_obj; /* number of times fault is on object page (2a) */ 347 int flt_prcopy; /* number of times fault promotes with copy (2b) */ 348 int flt_przero; /* number of times fault promotes with zerofill (2b) */ 349 350 /* daemon counters. XXX: should be 64-bit counters */ 351 int pdwoke; /* number of times daemon woke up */ 352 int pdrevs; /* number of times daemon rev'd clock hand */ 353 int pdswout; /* number of times daemon called for swapout */ 354 int pdfreed; /* number of pages daemon freed since boot */ 355 int pdscans; /* number of pages daemon scanned since boot */ 356 int pdanscan; /* number of anonymous pages scanned by daemon */ 357 int pdobscan; /* number of object pages scanned by daemon */ 358 int pdreact; /* number of pages daemon reactivated since boot */ 359 int pdbusy; /* number of times daemon found a busy page */ 360 int pdpageouts; /* number of times daemon started a pageout */ 361 int pdpending; /* number of times daemon got a pending pagout */ 362 int pddeact; /* number of pages daemon deactivates */ 363 int pdreanon; /* anon pages reactivated due to thresholds */ 364 int pdrefile; /* file pages reactivated due to thresholds */ 365 int pdreexec; /* executable pages reactivated due to thresholds */ 366 }; 367 368 /* 369 * The following structure is 64-bit alignment safe. New elements 370 * should only be added to the end of this structure so binary 371 * compatibility can be preserved. 372 */ 373 struct uvmexp_sysctl { 374 int64_t pagesize; 375 int64_t pagemask; 376 int64_t pageshift; 377 int64_t npages; 378 int64_t free; 379 int64_t active; 380 int64_t inactive; 381 int64_t paging; 382 int64_t wired; 383 int64_t zeropages; 384 int64_t reserve_pagedaemon; 385 int64_t reserve_kernel; 386 int64_t freemin; 387 int64_t freetarg; 388 int64_t inactarg; /* unused */ 389 int64_t wiredmax; 390 int64_t nswapdev; 391 int64_t swpages; 392 int64_t swpginuse; 393 int64_t swpgonly; 394 int64_t nswget; 395 int64_t unused1; /* used to be nanon */ 396 int64_t unused2; /* used to be nanonneeded */ 397 int64_t unused3; /* used to be nfreeanon */ 398 int64_t faults; 399 int64_t traps; 400 int64_t intrs; 401 int64_t swtch; 402 int64_t softs; 403 int64_t syscalls; 404 int64_t pageins; 405 int64_t swapins; 406 int64_t swapouts; 407 int64_t pgswapin; 408 int64_t pgswapout; 409 int64_t forks; 410 int64_t forks_ppwait; 411 int64_t forks_sharevm; 412 int64_t pga_zerohit; 413 int64_t pga_zeromiss; 414 int64_t zeroaborts; 415 int64_t fltnoram; 416 int64_t fltnoanon; 417 int64_t fltpgwait; 418 int64_t fltpgrele; 419 int64_t fltrelck; 420 int64_t fltrelckok; 421 int64_t fltanget; 422 int64_t fltanretry; 423 int64_t fltamcopy; 424 int64_t fltnamap; 425 int64_t fltnomap; 426 int64_t fltlget; 427 int64_t fltget; 428 int64_t flt_anon; 429 int64_t flt_acow; 430 int64_t flt_obj; 431 int64_t flt_prcopy; 432 int64_t flt_przero; 433 int64_t pdwoke; 434 int64_t pdrevs; 435 int64_t pdswout; 436 int64_t pdfreed; 437 int64_t pdscans; 438 int64_t pdanscan; 439 int64_t pdobscan; 440 int64_t pdreact; 441 int64_t pdbusy; 442 int64_t pdpageouts; 443 int64_t pdpending; 444 int64_t pddeact; 445 int64_t anonpages; 446 int64_t filepages; 447 int64_t execpages; 448 int64_t colorhit; 449 int64_t colormiss; 450 int64_t ncolors; 451 }; 452 453 #ifdef _KERNEL 454 /* we need this before including uvm_page.h on some platforms */ 455 extern struct uvmexp uvmexp; 456 #endif 457 458 /* 459 * Finally, bring in standard UVM headers. 460 */ 461 #include <sys/vmmeter.h> 462 #include <sys/queue.h> 463 #include <sys/lock.h> 464 #include <uvm/uvm_param.h> 465 #include <uvm/uvm_prot.h> 466 #include <uvm/uvm_page.h> 467 #include <uvm/uvm_pmap.h> 468 #include <uvm/uvm_map.h> 469 #include <uvm/uvm_pager.h> 470 471 /* 472 * helpers for calling ubc_release() 473 */ 474 #ifdef PMAP_CACHE_VIVT 475 #define UBC_WANT_UNMAP(vp) (((vp)->v_iflag & VI_TEXT) != 0) 476 #else 477 #define UBC_WANT_UNMAP(vp) false 478 #endif 479 480 /* 481 * Shareable process virtual address space. 482 * May eventually be merged with vm_map. 483 * Several fields are temporary (text, data stuff). 484 */ 485 struct vmspace { 486 struct vm_map vm_map; /* VM address map */ 487 int vm_refcnt; /* number of references * 488 * note: protected by vm_map.ref_lock */ 489 void * vm_shm; /* SYS5 shared memory private data XXX */ 490 /* we copy from vm_startcopy to the end of the structure on fork */ 491 #define vm_startcopy vm_rssize 492 segsz_t vm_rssize; /* current resident set size in pages */ 493 segsz_t vm_swrss; /* resident set size before last swap */ 494 segsz_t vm_tsize; /* text size (pages) XXX */ 495 segsz_t vm_dsize; /* data size (pages) XXX */ 496 segsz_t vm_ssize; /* stack size (pages) */ 497 void * vm_taddr; /* user virtual address of text XXX */ 498 void * vm_daddr; /* user virtual address of data XXX */ 499 void *vm_maxsaddr; /* user VA at max stack growth */ 500 void *vm_minsaddr; /* user VA at top of stack */ 501 }; 502 #define VMSPACE_IS_KERNEL_P(vm) VM_MAP_IS_KERNEL(&(vm)->vm_map) 503 504 #ifdef _KERNEL 505 506 extern struct pool *uvm_aiobuf_pool; 507 508 /* 509 * used to keep state while iterating over the map for a core dump. 510 */ 511 struct uvm_coredump_state { 512 void *cookie; /* opaque for the caller */ 513 vaddr_t start; /* start of region */ 514 vaddr_t realend; /* real end of region */ 515 vaddr_t end; /* virtual end of region */ 516 vm_prot_t prot; /* protection of region */ 517 int flags; /* flags; see below */ 518 }; 519 520 #define UVM_COREDUMP_STACK 0x01 /* region is user stack */ 521 522 /* 523 * the various kernel maps, owned by MD code 524 */ 525 extern struct vm_map *exec_map; 526 extern struct vm_map *kernel_map; 527 extern struct vm_map *kmem_map; 528 extern struct vm_map *mb_map; 529 extern struct vm_map *phys_map; 530 531 /* 532 * macros 533 */ 534 535 #define vm_resident_count(vm) (pmap_resident_count((vm)->vm_map.pmap)) 536 537 #include <sys/mallocvar.h> 538 MALLOC_DECLARE(M_VMMAP); 539 MALLOC_DECLARE(M_VMPMAP); 540 541 /* vm_machdep.c */ 542 void vmapbuf(struct buf *, vsize_t); 543 void vunmapbuf(struct buf *, vsize_t); 544 #ifndef cpu_swapin 545 void cpu_swapin(struct lwp *); 546 #endif 547 #ifndef cpu_swapout 548 void cpu_swapout(struct lwp *); 549 #endif 550 551 /* uvm_aobj.c */ 552 struct uvm_object *uao_create(vsize_t, int); 553 void uao_detach(struct uvm_object *); 554 void uao_detach_locked(struct uvm_object *); 555 void uao_reference(struct uvm_object *); 556 void uao_reference_locked(struct uvm_object *); 557 558 /* uvm_bio.c */ 559 void ubc_init(void); 560 void * ubc_alloc(struct uvm_object *, voff_t, vsize_t *, int, 561 int); 562 void ubc_release(void *, int); 563 void ubc_flush(struct uvm_object *, voff_t, voff_t); 564 int ubc_uiomove(struct uvm_object *, struct uio *, vsize_t, 565 int, int); 566 567 /* uvm_fault.c */ 568 #define uvm_fault(m, a, p) uvm_fault_internal(m, a, p, 0) 569 int uvm_fault_internal(struct vm_map *, vaddr_t, vm_prot_t, int); 570 /* handle a page fault */ 571 572 /* uvm_glue.c */ 573 #if defined(KGDB) 574 void uvm_chgkprot(void *, size_t, int); 575 #endif 576 void uvm_proc_fork(struct proc *, struct proc *, bool); 577 void uvm_lwp_fork(struct lwp *, struct lwp *, 578 void *, size_t, void (*)(void *), void *); 579 int uvm_coredump_walkmap(struct proc *, 580 void *, 581 int (*)(struct proc *, void *, 582 struct uvm_coredump_state *), void *); 583 void uvm_proc_exit(struct proc *); 584 void uvm_lwp_exit(struct lwp *); 585 void uvm_init_limits(struct proc *); 586 bool uvm_kernacc(void *, size_t, int); 587 __dead void uvm_scheduler(void); 588 void uvm_kick_scheduler(void); 589 void uvm_swapin(struct lwp *); 590 bool uvm_uarea_alloc(vaddr_t *); 591 void uvm_uarea_free(vaddr_t, struct cpu_info *); 592 void uvm_uarea_drain(bool); 593 int uvm_vslock(struct vmspace *, void *, size_t, vm_prot_t); 594 void uvm_vsunlock(struct vmspace *, void *, size_t); 595 void uvm_lwp_hold(struct lwp *); 596 void uvm_lwp_rele(struct lwp *); 597 void uvm_cpu_attach(struct cpu_info *); 598 599 600 /* uvm_init.c */ 601 void uvm_init(void); 602 603 /* uvm_io.c */ 604 int uvm_io(struct vm_map *, struct uio *); 605 606 /* uvm_km.c */ 607 vaddr_t uvm_km_alloc(struct vm_map *, vsize_t, vsize_t, 608 uvm_flag_t); 609 void uvm_km_free(struct vm_map *, vaddr_t, vsize_t, 610 uvm_flag_t); 611 612 struct vm_map *uvm_km_suballoc(struct vm_map *, vaddr_t *, 613 vaddr_t *, vsize_t, int, bool, 614 struct vm_map_kernel *); 615 vaddr_t uvm_km_alloc_poolpage(struct vm_map *, bool); 616 void uvm_km_free_poolpage(struct vm_map *, vaddr_t); 617 vaddr_t uvm_km_alloc_poolpage_cache(struct vm_map *, bool); 618 void uvm_km_free_poolpage_cache(struct vm_map *, vaddr_t); 619 void uvm_km_vacache_init(struct vm_map *, 620 const char *, size_t); 621 622 /* uvm_map.c */ 623 int uvm_map(struct vm_map *, vaddr_t *, vsize_t, 624 struct uvm_object *, voff_t, vsize_t, 625 uvm_flag_t); 626 int uvm_map_pageable(struct vm_map *, vaddr_t, 627 vaddr_t, bool, int); 628 int uvm_map_pageable_all(struct vm_map *, int, vsize_t); 629 bool uvm_map_checkprot(struct vm_map *, vaddr_t, 630 vaddr_t, vm_prot_t); 631 int uvm_map_protect(struct vm_map *, vaddr_t, 632 vaddr_t, vm_prot_t, bool); 633 struct vmspace *uvmspace_alloc(vaddr_t, vaddr_t); 634 void uvmspace_init(struct vmspace *, struct pmap *, 635 vaddr_t, vaddr_t); 636 void uvmspace_exec(struct lwp *, vaddr_t, vaddr_t); 637 struct vmspace *uvmspace_fork(struct vmspace *); 638 void uvmspace_addref(struct vmspace *); 639 void uvmspace_free(struct vmspace *); 640 void uvmspace_share(struct proc *, struct proc *); 641 void uvmspace_unshare(struct lwp *); 642 643 void uvm_whatis(uintptr_t, void (*)(const char *, ...)); 644 645 /* uvm_meter.c */ 646 void uvm_meter(void); 647 int uvm_sysctl(int *, u_int, void *, size_t *, 648 void *, size_t, struct proc *); 649 int uvm_pctparam_check(struct uvm_pctparam *, int); 650 void uvm_pctparam_set(struct uvm_pctparam *, int); 651 int uvm_pctparam_get(struct uvm_pctparam *); 652 void uvm_pctparam_init(struct uvm_pctparam *, int, 653 int (*)(struct uvm_pctparam *, int)); 654 int uvm_pctparam_createsysctlnode(struct uvm_pctparam *, 655 const char *, const char *); 656 657 /* uvm_mmap.c */ 658 int uvm_mmap(struct vm_map *, vaddr_t *, vsize_t, 659 vm_prot_t, vm_prot_t, int, 660 void *, voff_t, vsize_t); 661 vaddr_t uvm_default_mapaddr(struct proc *, vaddr_t, vsize_t); 662 663 /* uvm_mremap.c */ 664 int uvm_mremap(struct vm_map *, vaddr_t, vsize_t, 665 struct vm_map *, vaddr_t *, vsize_t, 666 struct proc *, int); 667 668 /* uvm_object.c */ 669 int uobj_wirepages(struct uvm_object *uobj, off_t start, 670 off_t end); 671 void uobj_unwirepages(struct uvm_object *uobj, off_t start, 672 off_t end); 673 674 /* uvm_page.c */ 675 struct vm_page *uvm_pagealloc_strat(struct uvm_object *, 676 voff_t, struct vm_anon *, int, int, int); 677 #define uvm_pagealloc(obj, off, anon, flags) \ 678 uvm_pagealloc_strat((obj), (off), (anon), (flags), \ 679 UVM_PGA_STRAT_NORMAL, 0) 680 void uvm_pagereplace(struct vm_page *, 681 struct vm_page *); 682 void uvm_pagerealloc(struct vm_page *, 683 struct uvm_object *, voff_t); 684 /* Actually, uvm_page_physload takes PF#s which need their own type */ 685 void uvm_page_physload(paddr_t, paddr_t, paddr_t, 686 paddr_t, int); 687 void uvm_setpagesize(void); 688 689 /* uvm_pager.c */ 690 void uvm_aio_biodone1(struct buf *); 691 void uvm_aio_biodone(struct buf *); 692 void uvm_aio_aiodone(struct buf *); 693 694 /* uvm_pdaemon.c */ 695 void uvm_pageout(void *); 696 struct work; 697 void uvm_aiodone_worker(struct work *, void *); 698 void uvm_estimatepageable(int *, int *); 699 700 /* uvm_pglist.c */ 701 int uvm_pglistalloc(psize_t, paddr_t, paddr_t, 702 paddr_t, paddr_t, struct pglist *, int, int); 703 void uvm_pglistfree(struct pglist *); 704 705 /* uvm_swap.c */ 706 void uvm_swap_init(void); 707 708 /* uvm_unix.c */ 709 int uvm_grow(struct proc *, vaddr_t); 710 711 /* uvm_user.c */ 712 void uvm_deallocate(struct vm_map *, vaddr_t, vsize_t); 713 714 /* uvm_vnode.c */ 715 void uvm_vnp_setsize(struct vnode *, voff_t); 716 void uvm_vnp_setwritesize(struct vnode *, voff_t); 717 int uvn_findpages(struct uvm_object *, voff_t, 718 int *, struct vm_page **, int); 719 void uvm_vnp_zerorange(struct vnode *, off_t, size_t); 720 bool uvn_text_p(struct uvm_object *); 721 bool uvn_clean_p(struct uvm_object *); 722 bool uvn_needs_writefault_p(struct uvm_object *); 723 724 /* kern_malloc.c */ 725 void kmeminit_nkmempages(void); 726 void kmeminit(void); 727 extern int nkmempages; 728 729 #endif /* _KERNEL */ 730 731 #endif /* _UVM_UVM_EXTERN_H_ */ 732
Indexes created Sat Sep 20 22:09:52 GMT 2025