uvm_extern.h revision 1.148.4.2.4.3
1 /* uvm_extern.h,v 1.148.4.2.4.1 2010/01/26 21:26:28 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 /* 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 can never be split later */ 147 #define UVM_FLAG_WAITVA 0x1000000 /* wait for va */ 148 #define UVM_FLAG_VAONLY 0x2000000 /* unmap: no pages are mapped */ 149 #define UVM_FLAG_COLORMATCH 0x4000000 /* match color given in off */ 150 151 /* macros to extract info */ 152 #define UVM_PROTECTION(X) ((X) & UVM_PROT_MASK) 153 #define UVM_INHERIT(X) (((X) & UVM_INH_MASK) >> 4) 154 #define UVM_MAXPROTECTION(X) (((X) >> 8) & UVM_PROT_MASK) 155 #define UVM_ADVICE(X) (((X) >> 12) & UVM_ADV_MASK) 156 157 #define UVM_MAPFLAG(PROT,MAXPROT,INH,ADVICE,FLAGS) \ 158 (((MAXPROT) << 8)|(PROT)|(INH)|((ADVICE) << 12)|(FLAGS)) 159 160 /* magic offset value: offset not known(obj) or don't care(!obj) */ 161 #define UVM_UNKNOWN_OFFSET ((voff_t) -1) 162 163 /* 164 * the following defines are for uvm_km_alloc/free's flags 165 */ 166 #define UVM_KMF_WIRED 0x1 /* allocation type: wired */ 167 #define UVM_KMF_PAGEABLE 0x2 /* allocation type: pageable */ 168 #define UVM_KMF_VAONLY 0x4 /* allocation type: VA only */ 169 #define UVM_KMF_TYPEMASK (UVM_KMF_VAONLY | UVM_KMF_PAGEABLE | UVM_KMF_WIRED) 170 #define UVM_KMF_CANFAIL 0x8 /* caller handles failure */ 171 #define UVM_KMF_ZERO 0x10 /* want zero filled memory */ 172 #define UVM_KMF_EXEC 0x20 /* need executable mapping */ 173 #define UVM_KMF_TRYLOCK UVM_FLAG_TRYLOCK /* try locking only */ 174 #define UVM_KMF_NOWAIT UVM_FLAG_NOWAIT /* not allowed to sleep */ 175 #define UVM_KMF_WAITVA UVM_FLAG_WAITVA /* sleep for va */ 176 #define UVM_KMF_COLORMATCH UVM_FLAG_COLORMATCH /* start at color in align */ 177 178 /* 179 * the following defines the strategies for uvm_pagealloc_strat() 180 */ 181 #define UVM_PGA_STRAT_NORMAL 0 /* high -> low free list 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 * structures 232 */ 233 234 struct buf; 235 struct core; 236 struct loadavg; 237 struct mount; 238 struct pglist; 239 struct proc; 240 struct uio; 241 struct uvm_object; 242 struct vm_anon; 243 struct vmspace; 244 struct pmap; 245 struct vnode; 246 struct pool; 247 struct simplelock; 248 struct vm_map_entry; 249 struct vm_map; 250 struct vm_page; 251 struct vmtotal; 252 253 /* 254 * uvm_pctparam: parameter to be shown as percentage to user. 255 */ 256 257 #define UVM_PCTPARAM_SHIFT 8 258 #define UVM_PCTPARAM_SCALE (1 << UVM_PCTPARAM_SHIFT) 259 #define UVM_PCTPARAM_APPLY(pct, x) \ 260 (((x) * (pct)->pct_scaled) >> UVM_PCTPARAM_SHIFT) 261 struct uvm_pctparam { 262 int pct_pct; /* percent [0, 100] */ /* should be the first member */ 263 int pct_scaled; 264 int (*pct_check)(struct uvm_pctparam *, int); 265 }; 266 267 /* 268 * uvmexp: global data structures that are exported to parts of the kernel 269 * other than the vm system. 270 */ 271 272 struct uvmexp { 273 /* vm_page constants */ 274 int pagesize; /* size of a page (PAGE_SIZE): must be power of 2 */ 275 int pagemask; /* page mask */ 276 int pageshift; /* page shift */ 277 278 /* vm_page counters */ 279 int npages; /* number of pages we manage */ 280 int free; /* number of free pages */ 281 int paging; /* number of pages in the process of being paged out */ 282 int wired; /* number of wired pages */ 283 284 /* 285 * Adding anything before this line will break binary compatibility 286 * with top(1) on NetBSD 1.5. 287 */ 288 289 int ncolors; /* number of page color buckets: must be p-o-2 */ 290 int colormask; /* color bucket mask */ 291 292 int zeropages; /* number of zero'd pages */ 293 int reserve_pagedaemon; /* number of pages reserved for pagedaemon */ 294 int reserve_kernel; /* number of pages reserved for kernel */ 295 unsigned anonpages; /* number of pages used by anon mappings */ 296 unsigned filepages; /* number of pages used by cached file data */ 297 unsigned execpages; /* number of pages used by cached exec data */ 298 299 /* pageout params */ 300 int freemin; /* min number of free pages */ 301 int freetarg; /* target number of free pages */ 302 int wiredmax; /* max number of wired pages */ 303 304 /* swap */ 305 int nswapdev; /* number of configured swap devices in system */ 306 int swpages; /* number of PAGE_SIZE'ed swap pages */ 307 int swpgavail; /* number of swap pages currently available */ 308 int swpginuse; /* number of swap pages in use */ 309 int swpgonly; /* number of swap pages in use, not also in RAM */ 310 int nswget; /* number of times fault calls uvm_swap_get() */ 311 312 /* stat counters. XXX: should be 64-bit counters */ 313 int faults; /* page fault count */ 314 int traps; /* trap count */ 315 int intrs; /* interrupt count */ 316 int swtch; /* context switch count */ 317 int softs; /* software interrupt count */ 318 int syscalls; /* system calls */ 319 int pageins; /* pagein operation count */ 320 /* pageouts are in pdpageouts below */ 321 int swapins; /* swapins */ 322 int swapouts; /* swapouts */ 323 int pgswapin; /* pages swapped in */ 324 int pgswapout; /* pages swapped out */ 325 int forks; /* forks */ 326 int forks_ppwait; /* forks where parent waits */ 327 int forks_sharevm; /* forks where vmspace is shared */ 328 int pga_zerohit; /* pagealloc where zero wanted and zero 329 was available */ 330 int pga_zeromiss; /* pagealloc where zero wanted and zero 331 not available */ 332 int zeroaborts; /* number of times page zeroing was 333 aborted */ 334 int colorfail; /* pagealloc where we got no page */ 335 int colorhit; /* pagealloc where we got optimal color */ 336 int colormiss; /* pagealloc where we didn't */ 337 int colorany; /* pagealloc where we wanted any color */ 338 int cpuhit; /* pagealloc where we allocated locally */ 339 int cpumiss; /* pagealloc where we didn't */ 340 341 /* fault subcounters. XXX: should be 64-bit counters */ 342 int fltnoram; /* number of times fault was out of ram */ 343 int fltnoanon; /* number of times fault was out of anons */ 344 int fltpgwait; /* number of times fault had to wait on a page */ 345 int fltpgrele; /* number of times fault found a released page */ 346 int fltrelck; /* number of times fault relock called */ 347 int fltrelckok; /* number of times fault relock is a success */ 348 int fltanget; /* number of times fault gets anon page */ 349 int fltanretry; /* number of times fault retrys an anon get */ 350 int fltamcopy; /* number of times fault clears "needs copy" */ 351 int fltnamap; /* number of times fault maps a neighbor anon page */ 352 int fltnomap; /* number of times fault maps a neighbor obj page */ 353 int fltlget; /* number of times fault does a locked pgo_get */ 354 int fltget; /* number of times fault does an unlocked get */ 355 int flt_anon; /* number of times fault anon (case 1a) */ 356 int flt_acow; /* number of times fault anon cow (case 1b) */ 357 int flt_obj; /* number of times fault is on object page (2a) */ 358 int flt_prcopy; /* number of times fault promotes with copy (2b) */ 359 int flt_przero; /* number of times fault promotes with zerofill (2b) */ 360 361 /* daemon counters. XXX: should be 64-bit counters */ 362 int pdwoke; /* number of times daemon woke up */ 363 int pdrevs; /* number of times daemon rev'd clock hand */ 364 int pdswout; /* number of times daemon called for swapout */ 365 int pdfreed; /* number of pages daemon freed since boot */ 366 int pdscans; /* number of pages daemon scanned since boot */ 367 int pdanscan; /* number of anonymous pages scanned by daemon */ 368 int pdobscan; /* number of object pages scanned by daemon */ 369 int pdreact; /* number of pages daemon reactivated since boot */ 370 int pdbusy; /* number of times daemon found a busy page */ 371 int pdpageouts; /* number of times daemon started a pageout */ 372 int pdpending; /* number of times daemon got a pending pagout */ 373 int pddeact; /* number of pages daemon deactivates */ 374 int pdreanon; /* anon pages reactivated due to thresholds */ 375 int pdrefile; /* file pages reactivated due to thresholds */ 376 int pdreexec; /* executable pages reactivated due to thresholds */ 377 }; 378 379 /* 380 * The following structure is 64-bit alignment safe. New elements 381 * should only be added to the end of this structure so binary 382 * compatibility can be preserved. 383 */ 384 struct uvmexp_sysctl { 385 int64_t pagesize; 386 int64_t pagemask; 387 int64_t pageshift; 388 int64_t npages; 389 int64_t free; 390 int64_t active; 391 int64_t inactive; 392 int64_t paging; 393 int64_t wired; 394 int64_t zeropages; 395 int64_t reserve_pagedaemon; 396 int64_t reserve_kernel; 397 int64_t freemin; 398 int64_t freetarg; 399 int64_t inactarg; /* unused */ 400 int64_t wiredmax; 401 int64_t nswapdev; 402 int64_t swpages; 403 int64_t swpginuse; 404 int64_t swpgonly; 405 int64_t nswget; 406 int64_t unused1; /* used to be nanon */ 407 int64_t cpuhit; 408 int64_t cpumiss; 409 int64_t faults; 410 int64_t traps; 411 int64_t intrs; 412 int64_t swtch; 413 int64_t softs; 414 int64_t syscalls; 415 int64_t pageins; 416 int64_t swapins; 417 int64_t swapouts; 418 int64_t pgswapin; 419 int64_t pgswapout; 420 int64_t forks; 421 int64_t forks_ppwait; 422 int64_t forks_sharevm; 423 int64_t pga_zerohit; 424 int64_t pga_zeromiss; 425 int64_t zeroaborts; 426 int64_t fltnoram; 427 int64_t fltnoanon; 428 int64_t fltpgwait; 429 int64_t fltpgrele; 430 int64_t fltrelck; 431 int64_t fltrelckok; 432 int64_t fltanget; 433 int64_t fltanretry; 434 int64_t fltamcopy; 435 int64_t fltnamap; 436 int64_t fltnomap; 437 int64_t fltlget; 438 int64_t fltget; 439 int64_t flt_anon; 440 int64_t flt_acow; 441 int64_t flt_obj; 442 int64_t flt_prcopy; 443 int64_t flt_przero; 444 int64_t pdwoke; 445 int64_t pdrevs; 446 int64_t pdswout; 447 int64_t pdfreed; 448 int64_t pdscans; 449 int64_t pdanscan; 450 int64_t pdobscan; 451 int64_t pdreact; 452 int64_t pdbusy; 453 int64_t pdpageouts; 454 int64_t pdpending; 455 int64_t pddeact; 456 int64_t anonpages; 457 int64_t filepages; 458 int64_t execpages; 459 int64_t colorhit; 460 int64_t colormiss; 461 int64_t ncolors; 462 int64_t colorany; 463 int64_t colorfail; 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 492 493 /* 494 * Shareable process virtual address space. 495 * May eventually be merged with vm_map. 496 * Several fields are temporary (text, data stuff). 497 */ 498 struct vmspace { 499 struct vm_map vm_map; /* VM address map */ 500 int vm_refcnt; /* number of references * 501 * note: protected by vm_map.ref_lock */ 502 void * vm_shm; /* SYS5 shared memory private data XXX */ 503 /* we copy from vm_startcopy to the end of the structure on fork */ 504 #define vm_startcopy vm_rssize 505 segsz_t vm_rssize; /* current resident set size in pages */ 506 segsz_t vm_swrss; /* resident set size before last swap */ 507 segsz_t vm_tsize; /* text size (pages) XXX */ 508 segsz_t vm_dsize; /* data size (pages) XXX */ 509 segsz_t vm_ssize; /* stack size (pages) */ 510 segsz_t vm_issize; /* initial unmapped stack size (pages) */ 511 void * vm_taddr; /* user virtual address of text XXX */ 512 void * vm_daddr; /* user virtual address of data XXX */ 513 void *vm_maxsaddr; /* user VA at max stack growth */ 514 void *vm_minsaddr; /* user VA at top of stack */ 515 size_t vm_aslr_delta_mmap; /* mmap() random delta for ASLR */ 516 }; 517 #define VMSPACE_IS_KERNEL_P(vm) VM_MAP_IS_KERNEL(&(vm)->vm_map) 518 519 #ifdef _KERNEL 520 521 extern struct pool *uvm_aiobuf_pool; 522 523 /* 524 * used to keep state while iterating over the map for a core dump. 525 */ 526 struct uvm_coredump_state { 527 void *cookie; /* opaque for the caller */ 528 vaddr_t start; /* start of region */ 529 vaddr_t realend; /* real end of region */ 530 vaddr_t end; /* virtual end of region */ 531 vm_prot_t prot; /* protection of region */ 532 int flags; /* flags; see below */ 533 }; 534 535 #define UVM_COREDUMP_STACK 0x01 /* region is user stack */ 536 537 /* 538 * the various kernel maps, owned by MD code 539 */ 540 extern struct vm_map *kernel_map; 541 extern struct vm_map *kmem_map; 542 extern struct vm_map *mb_map; 543 extern struct vm_map *phys_map; 544 545 /* 546 * macros 547 */ 548 549 #define vm_resident_count(vm) (pmap_resident_count((vm)->vm_map.pmap)) 550 551 #include <sys/mallocvar.h> 552 MALLOC_DECLARE(M_VMMAP); 553 MALLOC_DECLARE(M_VMPMAP); 554 555 /* vm_machdep.c */ 556 void vmapbuf(struct buf *, vsize_t); 557 void vunmapbuf(struct buf *, vsize_t); 558 #ifndef cpu_swapin 559 void cpu_swapin(struct lwp *); 560 #endif 561 #ifndef cpu_swapout 562 void cpu_swapout(struct lwp *); 563 #endif 564 565 /* uvm_aobj.c */ 566 struct uvm_object *uao_create(vsize_t, int); 567 void uao_detach(struct uvm_object *); 568 void uao_detach_locked(struct uvm_object *); 569 void uao_reference(struct uvm_object *); 570 void uao_reference_locked(struct uvm_object *); 571 572 /* uvm_bio.c */ 573 void ubc_init(void); 574 void * ubc_alloc(struct uvm_object *, voff_t, vsize_t *, int, 575 int); 576 void ubc_release(void *, int); 577 void ubc_flush(struct uvm_object *, voff_t, voff_t); 578 int ubc_uiomove(struct uvm_object *, struct uio *, vsize_t, 579 int, int); 580 581 /* uvm_fault.c */ 582 #define uvm_fault(m, a, p) uvm_fault_internal(m, a, p, 0) 583 int uvm_fault_internal(struct vm_map *, vaddr_t, vm_prot_t, int); 584 /* handle a page fault */ 585 586 /* uvm_glue.c */ 587 #if defined(KGDB) 588 void uvm_chgkprot(void *, size_t, int); 589 #endif 590 void uvm_proc_fork(struct proc *, struct proc *, bool); 591 void uvm_lwp_fork(struct lwp *, struct lwp *, 592 void *, size_t, void (*)(void *), void *); 593 int uvm_coredump_walkmap(struct proc *, 594 void *, 595 int (*)(struct proc *, void *, 596 struct uvm_coredump_state *), void *); 597 void uvm_proc_exit(struct proc *); 598 void uvm_lwp_exit(struct lwp *); 599 void uvm_init_limits(struct proc *); 600 bool uvm_kernacc(void *, size_t, int); 601 __dead void uvm_scheduler(void); 602 void uvm_kick_scheduler(void); 603 void uvm_swapin(struct lwp *); 604 bool uvm_uarea_alloc(vaddr_t *); 605 void uvm_uarea_free(vaddr_t, struct cpu_info *); 606 int uvm_vslock(struct vmspace *, void *, size_t, vm_prot_t); 607 void uvm_vsunlock(struct vmspace *, void *, size_t); 608 void uvm_lwp_hold(struct lwp *); 609 void uvm_lwp_rele(struct lwp *); 610 void uvm_cpu_attach(struct cpu_info *); 611 612 613 /* uvm_init.c */ 614 void uvm_init(void); 615 616 /* uvm_io.c */ 617 int uvm_io(struct vm_map *, struct uio *); 618 619 /* uvm_km.c */ 620 vaddr_t uvm_km_alloc(struct vm_map *, vsize_t, vsize_t, 621 uvm_flag_t); 622 void uvm_km_free(struct vm_map *, vaddr_t, vsize_t, 623 uvm_flag_t); 624 625 struct vm_map *uvm_km_suballoc(struct vm_map *, vaddr_t *, 626 vaddr_t *, vsize_t, int, bool, 627 struct vm_map_kernel *); 628 vaddr_t uvm_km_alloc_poolpage(struct vm_map *, bool); 629 void uvm_km_free_poolpage(struct vm_map *, vaddr_t); 630 vaddr_t uvm_km_alloc_poolpage_cache(struct vm_map *, bool); 631 void uvm_km_free_poolpage_cache(struct vm_map *, vaddr_t); 632 void uvm_km_vacache_init(struct vm_map *, 633 const char *, size_t); 634 635 /* uvm_map.c */ 636 int uvm_map(struct vm_map *, vaddr_t *, vsize_t, 637 struct uvm_object *, voff_t, vsize_t, 638 uvm_flag_t); 639 int uvm_map_pageable(struct vm_map *, vaddr_t, 640 vaddr_t, bool, int); 641 int uvm_map_pageable_all(struct vm_map *, int, vsize_t); 642 bool uvm_map_checkprot(struct vm_map *, vaddr_t, 643 vaddr_t, vm_prot_t); 644 int uvm_map_protect(struct vm_map *, vaddr_t, 645 vaddr_t, vm_prot_t, bool); 646 struct vmspace *uvmspace_alloc(vaddr_t, vaddr_t); 647 void uvmspace_init(struct vmspace *, struct pmap *, 648 vaddr_t, vaddr_t); 649 void uvmspace_exec(struct lwp *, vaddr_t, vaddr_t); 650 struct vmspace *uvmspace_fork(struct vmspace *); 651 void uvmspace_addref(struct vmspace *); 652 void uvmspace_free(struct vmspace *); 653 void uvmspace_share(struct proc *, struct proc *); 654 void uvmspace_unshare(struct lwp *); 655 656 void uvm_whatis(uintptr_t, void (*)(const char *, ...)); 657 658 /* uvm_meter.c */ 659 void uvm_meter(void); 660 int uvm_sysctl(int *, u_int, void *, size_t *, 661 void *, size_t, struct proc *); 662 int uvm_pctparam_check(struct uvm_pctparam *, int); 663 void uvm_pctparam_set(struct uvm_pctparam *, int); 664 int uvm_pctparam_get(struct uvm_pctparam *); 665 void uvm_pctparam_init(struct uvm_pctparam *, int, 666 int (*)(struct uvm_pctparam *, int)); 667 int uvm_pctparam_createsysctlnode(struct uvm_pctparam *, 668 const char *, const char *); 669 670 /* uvm_mmap.c */ 671 int uvm_mmap(struct vm_map *, vaddr_t *, vsize_t, 672 vm_prot_t, vm_prot_t, int, 673 void *, voff_t, vsize_t); 674 vaddr_t uvm_default_mapaddr(struct proc *, vaddr_t, vsize_t); 675 676 /* uvm_mremap.c */ 677 int uvm_mremap(struct vm_map *, vaddr_t, vsize_t, 678 struct vm_map *, vaddr_t *, vsize_t, 679 struct proc *, int); 680 681 /* uvm_object.c */ 682 int uobj_wirepages(struct uvm_object *uobj, off_t start, 683 off_t end); 684 void uobj_unwirepages(struct uvm_object *uobj, off_t start, 685 off_t end); 686 687 /* uvm_page.c */ 688 struct vm_page *uvm_pagealloc_strat(struct uvm_object *, 689 voff_t, struct vm_anon *, int, int, int); 690 #define uvm_pagealloc(obj, off, anon, flags) \ 691 uvm_pagealloc_strat((obj), (off), (anon), (flags), \ 692 UVM_PGA_STRAT_NORMAL, 0) 693 void uvm_pagereplace(struct vm_page *, 694 struct vm_page *); 695 void uvm_pagerealloc(struct vm_page *, 696 struct uvm_object *, voff_t); 697 /* Actually, uvm_page_physload takes PF#s which need their own type */ 698 void uvm_page_physload(paddr_t, paddr_t, paddr_t, 699 paddr_t, int); 700 void uvm_setpagesize(void); 701 702 /* uvm_pager.c */ 703 void uvm_aio_biodone1(struct buf *); 704 void uvm_aio_biodone(struct buf *); 705 void uvm_aio_aiodone(struct buf *); 706 void uvm_aio_aiodone_pages(struct vm_page **, int, bool, 707 int); 708 709 /* uvm_pdaemon.c */ 710 void uvm_pageout(void *); 711 struct work; 712 void uvm_aiodone_worker(struct work *, void *); 713 void uvm_pageout_start(int); 714 void uvm_pageout_done(int); 715 void uvm_estimatepageable(int *, int *); 716 717 /* uvm_pglist.c */ 718 int uvm_pglistalloc(psize_t, paddr_t, paddr_t, 719 paddr_t, paddr_t, struct pglist *, int, int); 720 void uvm_pglistfree(struct pglist *); 721 722 /* uvm_swap.c */ 723 void uvm_swap_init(void); 724 725 /* uvm_unix.c */ 726 int uvm_grow(struct proc *, vaddr_t); 727 728 /* uvm_user.c */ 729 void uvm_deallocate(struct vm_map *, vaddr_t, vsize_t); 730 731 /* uvm_vnode.c */ 732 void uvm_vnp_setsize(struct vnode *, voff_t); 733 void uvm_vnp_setwritesize(struct vnode *, voff_t); 734 int uvn_findpages(struct uvm_object *, voff_t, 735 int *, struct vm_page **, int); 736 void uvm_vnp_zerorange(struct vnode *, off_t, size_t); 737 bool uvn_text_p(struct uvm_object *); 738 bool uvn_clean_p(struct uvm_object *); 739 bool uvn_needs_writefault_p(struct uvm_object *); 740 741 /* kern_malloc.c */ 742 void kmeminit_nkmempages(void); 743 void kmeminit(void); 744 extern int nkmempages; 745 746 #endif /* _KERNEL */ 747 748 #endif /* _UVM_UVM_EXTERN_H_ */ 749
Indexes created Fri Oct 17 09:09:57 GMT 2025