1 /* $NetBSD: uvm_extern.h,v 1.112 2006/03/15 18:09:25 drochner 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 91 /* 92 * defines 93 */ 94 95 /* 96 * the following defines are for uvm_map and functions which call it. 97 */ 98 99 /* protections bits */ 100 #define UVM_PROT_MASK 0x07 /* protection mask */ 101 #define UVM_PROT_NONE 0x00 /* protection none */ 102 #define UVM_PROT_ALL 0x07 /* everything */ 103 #define UVM_PROT_READ 0x01 /* read */ 104 #define UVM_PROT_WRITE 0x02 /* write */ 105 #define UVM_PROT_EXEC 0x04 /* exec */ 106 107 /* protection short codes */ 108 #define UVM_PROT_R 0x01 /* read */ 109 #define UVM_PROT_W 0x02 /* write */ 110 #define UVM_PROT_RW 0x03 /* read-write */ 111 #define UVM_PROT_X 0x04 /* exec */ 112 #define UVM_PROT_RX 0x05 /* read-exec */ 113 #define UVM_PROT_WX 0x06 /* write-exec */ 114 #define UVM_PROT_RWX 0x07 /* read-write-exec */ 115 116 /* 0x08: not used */ 117 118 /* inherit codes */ 119 #define UVM_INH_MASK 0x30 /* inherit mask */ 120 #define UVM_INH_SHARE 0x00 /* "share" */ 121 #define UVM_INH_COPY 0x10 /* "copy" */ 122 #define UVM_INH_NONE 0x20 /* "none" */ 123 #define UVM_INH_DONATE 0x30 /* "donate" << not used */ 124 125 /* 0x40, 0x80: not used */ 126 127 /* bits 0x700: max protection, 0x800: not used */ 128 129 /* bits 0x7000: advice, 0x8000: not used */ 130 /* advice: matches MADV_* from sys/mman.h and POSIX_FADV_* from sys/fcntl.h */ 131 #define UVM_ADV_NORMAL 0x0 /* 'normal' */ 132 #define UVM_ADV_RANDOM 0x1 /* 'random' */ 133 #define UVM_ADV_SEQUENTIAL 0x2 /* 'sequential' */ 134 /* 0x3: will need, 0x4: dontneed */ 135 #define UVM_ADV_MASK 0x7 /* mask */ 136 137 /* bits 0xffff0000: mapping flags */ 138 #define UVM_FLAG_FIXED 0x010000 /* find space */ 139 #define UVM_FLAG_OVERLAY 0x020000 /* establish overlay */ 140 #define UVM_FLAG_NOMERGE 0x040000 /* don't merge map entries */ 141 #define UVM_FLAG_COPYONW 0x080000 /* set copy_on_write flag */ 142 #define UVM_FLAG_AMAPPAD 0x100000 /* for bss: pad amap to reduce malloc() */ 143 #define UVM_FLAG_TRYLOCK 0x200000 /* fail if we can not lock map */ 144 #define UVM_FLAG_NOWAIT 0x400000 /* not allowed to sleep */ 145 #define UVM_FLAG_QUANTUM 0x800000 /* entry never be splitted later */ 146 #define UVM_FLAG_WAITVA 0x1000000 /* wait for va */ 147 #define UVM_FLAG_VAONLY 0x2000000 /* unmap: no pages are mapped */ 148 149 /* macros to extract info */ 150 #define UVM_PROTECTION(X) ((X) & UVM_PROT_MASK) 151 #define UVM_INHERIT(X) (((X) & UVM_INH_MASK) >> 4) 152 #define UVM_MAXPROTECTION(X) (((X) >> 8) & UVM_PROT_MASK) 153 #define UVM_ADVICE(X) (((X) >> 12) & UVM_ADV_MASK) 154 155 #define UVM_MAPFLAG(PROT,MAXPROT,INH,ADVICE,FLAGS) \ 156 ((MAXPROT << 8)|(PROT)|(INH)|((ADVICE) << 12)|(FLAGS)) 157 158 /* magic offset value: offset not known(obj) or don't care(!obj) */ 159 #define UVM_UNKNOWN_OFFSET ((voff_t) -1) 160 161 /* 162 * the following defines are for uvm_km_alloc/free's flags 163 */ 164 #define UVM_KMF_WIRED 0x1 /* allocation type: wired */ 165 #define UVM_KMF_PAGEABLE 0x2 /* allocation type: pageable */ 166 #define UVM_KMF_VAONLY 0x4 /* allocation type: VA only */ 167 #define UVM_KMF_TYPEMASK (UVM_KMF_VAONLY | UVM_KMF_PAGEABLE | UVM_KMF_WIRED) 168 #define UVM_KMF_CANFAIL 0x8 /* caller handles failure */ 169 #define UVM_KMF_ZERO 0x10 /* want zero filled memory */ 170 #define UVM_KMF_TRYLOCK UVM_FLAG_TRYLOCK /* try locking only */ 171 #define UVM_KMF_NOWAIT UVM_FLAG_NOWAIT /* not allowed to sleep */ 172 #define UVM_KMF_WAITVA UVM_FLAG_WAITVA /* sleep for va */ 173 174 /* 175 * the following defines the strategies for uvm_pagealloc_strat() 176 */ 177 #define UVM_PGA_STRAT_NORMAL 0 /* high -> low free list walk */ 178 #define UVM_PGA_STRAT_ONLY 1 /* only specified free list */ 179 #define UVM_PGA_STRAT_FALLBACK 2 /* ONLY falls back on NORMAL */ 180 181 /* 182 * flags for uvm_pagealloc_strat() 183 */ 184 #define UVM_PGA_USERESERVE 0x0001 /* ok to use reserve pages */ 185 #define UVM_PGA_ZERO 0x0002 /* returned page must be zero'd */ 186 187 /* 188 * flags for ubc_alloc() 189 */ 190 #define UBC_READ 0x01 191 #define UBC_WRITE 0x02 192 #define UBC_FAULTBUSY 0x04 193 194 /* 195 * flags for ubc_release() 196 */ 197 #define UBC_UNMAP 0x01 198 199 /* 200 * helpers for calling ubc_release() 201 */ 202 #ifdef PMAP_CACHE_VIVT 203 #define UBC_WANT_UNMAP(vp) (((vp)->v_flag & VTEXT) != 0) 204 #else 205 #define UBC_WANT_UNMAP(vp) FALSE 206 #endif 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 * structures 227 */ 228 229 struct buf; 230 struct core; 231 struct loadavg; 232 struct mount; 233 struct pglist; 234 struct proc; 235 struct ucred; 236 struct uio; 237 struct uvm_object; 238 struct vm_anon; 239 struct vmspace; 240 struct pmap; 241 struct vnode; 242 struct pool; 243 struct simplelock; 244 struct vm_map_entry; 245 struct vm_map; 246 struct vm_page; 247 struct vmtotal; 248 249 /* 250 * uvm_pctparam: parameter to be shown as percentage to user. 251 */ 252 253 #define UVM_PCTPARAM_SHIFT 8 254 #define UVM_PCTPARAM_SCALE (1 << UVM_PCTPARAM_SHIFT) 255 #define UVM_PCTPARAM_APPLY(pct, x) \ 256 (((x) * (pct)->pct_scaled) >> UVM_PCTPARAM_SHIFT) 257 struct uvm_pctparam { 258 int pct_pct; /* percent [0, 100] */ 259 int pct_scaled; 260 }; 261 262 /* 263 * uvmexp: global data structures that are exported to parts of the kernel 264 * other than the vm system. 265 */ 266 267 struct uvmexp { 268 /* vm_page constants */ 269 int pagesize; /* size of a page (PAGE_SIZE): must be power of 2 */ 270 int pagemask; /* page mask */ 271 int pageshift; /* page shift */ 272 273 /* vm_page counters */ 274 int npages; /* number of pages we manage */ 275 int free; /* number of free pages */ 276 int active; /* number of active pages */ 277 int inactive; /* number of pages that we free'd but may want back */ 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 inactarg; /* target number of inactive pages */ 300 int wiredmax; /* max number of wired pages */ 301 int anonmin; /* min threshold for anon pages */ 302 int execmin; /* min threshold for executable pages */ 303 int filemin; /* min threshold for file pages */ 304 int anonminpct; /* min percent anon pages */ 305 int execminpct; /* min percent executable pages */ 306 int fileminpct; /* min percent file pages */ 307 int anonmax; /* max threshold for anon pages */ 308 int execmax; /* max threshold for executable pages */ 309 int filemax; /* max threshold for file pages */ 310 int anonmaxpct; /* max percent anon pages */ 311 int execmaxpct; /* max percent executable pages */ 312 int filemaxpct; /* max percent file pages */ 313 struct uvm_pctparam inactivepct; /* length of inactive queue 314 (pct of the whole queue) */ 315 316 /* swap */ 317 int nswapdev; /* number of configured swap devices in system */ 318 int swpages; /* number of PAGE_SIZE'ed swap pages */ 319 int swpgavail; /* number of swap pages currently available */ 320 int swpginuse; /* number of swap pages in use */ 321 int swpgonly; /* number of swap pages in use, not also in RAM */ 322 int nswget; /* number of times fault calls uvm_swap_get() */ 323 324 /* stat counters. XXX: should be 64-bit counters */ 325 int faults; /* page fault count */ 326 int traps; /* trap count */ 327 int intrs; /* interrupt count */ 328 int swtch; /* context switch count */ 329 int softs; /* software interrupt count */ 330 int syscalls; /* system calls */ 331 int pageins; /* pagein operation count */ 332 /* pageouts are in pdpageouts below */ 333 int swapins; /* swapins */ 334 int swapouts; /* swapouts */ 335 int pgswapin; /* pages swapped in */ 336 int pgswapout; /* pages swapped out */ 337 int forks; /* forks */ 338 int forks_ppwait; /* forks where parent waits */ 339 int forks_sharevm; /* forks where vmspace is shared */ 340 int pga_zerohit; /* pagealloc where zero wanted and zero 341 was available */ 342 int pga_zeromiss; /* pagealloc where zero wanted and zero 343 not available */ 344 int zeroaborts; /* number of times page zeroing was 345 aborted */ 346 int colorhit; /* pagealloc where we got optimal color */ 347 int colormiss; /* pagealloc where we didn't */ 348 349 /* fault subcounters. XXX: should be 64-bit counters */ 350 int fltnoram; /* number of times fault was out of ram */ 351 int fltnoanon; /* number of times fault was out of anons */ 352 int fltpgwait; /* number of times fault had to wait on a page */ 353 int fltpgrele; /* number of times fault found a released page */ 354 int fltrelck; /* number of times fault relock called */ 355 int fltrelckok; /* number of times fault relock is a success */ 356 int fltanget; /* number of times fault gets anon page */ 357 int fltanretry; /* number of times fault retrys an anon get */ 358 int fltamcopy; /* number of times fault clears "needs copy" */ 359 int fltnamap; /* number of times fault maps a neighbor anon page */ 360 int fltnomap; /* number of times fault maps a neighbor obj page */ 361 int fltlget; /* number of times fault does a locked pgo_get */ 362 int fltget; /* number of times fault does an unlocked get */ 363 int flt_anon; /* number of times fault anon (case 1a) */ 364 int flt_acow; /* number of times fault anon cow (case 1b) */ 365 int flt_obj; /* number of times fault is on object page (2a) */ 366 int flt_prcopy; /* number of times fault promotes with copy (2b) */ 367 int flt_przero; /* number of times fault promotes with zerofill (2b) */ 368 369 /* daemon counters. XXX: should be 64-bit counters */ 370 int pdwoke; /* number of times daemon woke up */ 371 int pdrevs; /* number of times daemon rev'd clock hand */ 372 int pdswout; /* number of times daemon called for swapout */ 373 int pdfreed; /* number of pages daemon freed since boot */ 374 int pdscans; /* number of pages daemon scanned since boot */ 375 int pdanscan; /* number of anonymous pages scanned by daemon */ 376 int pdobscan; /* number of object pages scanned by daemon */ 377 int pdreact; /* number of pages daemon reactivated since boot */ 378 int pdbusy; /* number of times daemon found a busy page */ 379 int pdpageouts; /* number of times daemon started a pageout */ 380 int pdpending; /* number of times daemon got a pending pagout */ 381 int pddeact; /* number of pages daemon deactivates */ 382 int pdreanon; /* anon pages reactivated due to thresholds */ 383 int pdrefile; /* file pages reactivated due to thresholds */ 384 int pdreexec; /* executable pages reactivated due to thresholds */ 385 }; 386 387 /* 388 * The following structure is 64-bit alignment safe. New elements 389 * should only be added to the end of this structure so binary 390 * compatibility can be preserved. 391 */ 392 struct uvmexp_sysctl { 393 int64_t pagesize; 394 int64_t pagemask; 395 int64_t pageshift; 396 int64_t npages; 397 int64_t free; 398 int64_t active; 399 int64_t inactive; 400 int64_t paging; 401 int64_t wired; 402 int64_t zeropages; 403 int64_t reserve_pagedaemon; 404 int64_t reserve_kernel; 405 int64_t freemin; 406 int64_t freetarg; 407 int64_t inactarg; 408 int64_t wiredmax; 409 int64_t nswapdev; 410 int64_t swpages; 411 int64_t swpginuse; 412 int64_t swpgonly; 413 int64_t nswget; 414 int64_t unused1; /* used to be nanon */ 415 int64_t unused2; /* used to be nanonneeded */ 416 int64_t unused3; /* used to be nfreeanon */ 417 int64_t faults; 418 int64_t traps; 419 int64_t intrs; 420 int64_t swtch; 421 int64_t softs; 422 int64_t syscalls; 423 int64_t pageins; 424 int64_t swapins; 425 int64_t swapouts; 426 int64_t pgswapin; 427 int64_t pgswapout; 428 int64_t forks; 429 int64_t forks_ppwait; 430 int64_t forks_sharevm; 431 int64_t pga_zerohit; 432 int64_t pga_zeromiss; 433 int64_t zeroaborts; 434 int64_t fltnoram; 435 int64_t fltnoanon; 436 int64_t fltpgwait; 437 int64_t fltpgrele; 438 int64_t fltrelck; 439 int64_t fltrelckok; 440 int64_t fltanget; 441 int64_t fltanretry; 442 int64_t fltamcopy; 443 int64_t fltnamap; 444 int64_t fltnomap; 445 int64_t fltlget; 446 int64_t fltget; 447 int64_t flt_anon; 448 int64_t flt_acow; 449 int64_t flt_obj; 450 int64_t flt_prcopy; 451 int64_t flt_przero; 452 int64_t pdwoke; 453 int64_t pdrevs; 454 int64_t pdswout; 455 int64_t pdfreed; 456 int64_t pdscans; 457 int64_t pdanscan; 458 int64_t pdobscan; 459 int64_t pdreact; 460 int64_t pdbusy; 461 int64_t pdpageouts; 462 int64_t pdpending; 463 int64_t pddeact; 464 int64_t anonpages; 465 int64_t filepages; 466 int64_t execpages; 467 int64_t colorhit; 468 int64_t colormiss; 469 int64_t ncolors; 470 }; 471 472 #ifdef _KERNEL 473 /* we need this before including uvm_page.h on some platforms */ 474 extern struct uvmexp uvmexp; 475 #endif 476 477 /* 478 * Finally, bring in standard UVM headers. 479 */ 480 #include <sys/vmmeter.h> 481 #include <sys/queue.h> 482 #include <uvm/uvm_param.h> 483 #include <sys/lock.h> 484 #include <uvm/uvm_prot.h> 485 #include <uvm/uvm_page.h> 486 #include <uvm/uvm_pmap.h> 487 #include <uvm/uvm_map.h> 488 #include <uvm/uvm_pager.h> 489 490 /* 491 * Shareable process virtual address space. 492 * May eventually be merged with vm_map. 493 * Several fields are temporary (text, data stuff). 494 */ 495 struct vmspace { 496 struct vm_map vm_map; /* VM address map */ 497 int vm_refcnt; /* number of references * 498 * note: protected by vm_map.ref_lock */ 499 caddr_t vm_shm; /* SYS5 shared memory private data XXX */ 500 /* we copy from vm_startcopy to the end of the structure on fork */ 501 #define vm_startcopy vm_rssize 502 segsz_t vm_rssize; /* current resident set size in pages */ 503 segsz_t vm_swrss; /* resident set size before last swap */ 504 segsz_t vm_tsize; /* text size (pages) XXX */ 505 segsz_t vm_dsize; /* data size (pages) XXX */ 506 segsz_t vm_ssize; /* stack size (pages) */ 507 caddr_t vm_taddr; /* user virtual address of text XXX */ 508 caddr_t vm_daddr; /* user virtual address of data XXX */ 509 caddr_t vm_maxsaddr; /* user VA at max stack growth */ 510 caddr_t vm_minsaddr; /* user VA at top of stack */ 511 }; 512 #define VMSPACE_IS_KERNEL_P(vm) VM_MAP_IS_KERNEL(&(vm)->vm_map) 513 514 #ifdef _KERNEL 515 516 extern struct pool *uvm_aiobuf_pool; 517 518 /* 519 * used to keep state while iterating over the map for a core dump. 520 */ 521 struct uvm_coredump_state { 522 void *cookie; /* opaque for the caller */ 523 vaddr_t start; /* start of region */ 524 vaddr_t realend; /* real end of region */ 525 vaddr_t end; /* virtual end of region */ 526 vm_prot_t prot; /* protection of region */ 527 int flags; /* flags; see below */ 528 }; 529 530 #define UVM_COREDUMP_STACK 0x01 /* region is user stack */ 531 532 /* 533 * the various kernel maps, owned by MD code 534 */ 535 extern struct vm_map *exec_map; 536 extern struct vm_map *kernel_map; 537 extern struct vm_map *kmem_map; 538 extern struct vm_map *mb_map; 539 extern struct vm_map *phys_map; 540 541 /* 542 * macros 543 */ 544 545 #define vm_resident_count(vm) (pmap_resident_count((vm)->vm_map.pmap)) 546 547 #include <sys/mallocvar.h> 548 MALLOC_DECLARE(M_VMMAP); 549 MALLOC_DECLARE(M_VMPMAP); 550 551 /* vm_machdep.c */ 552 void vmapbuf(struct buf *, vsize_t); 553 void vunmapbuf(struct buf *, vsize_t); 554 #ifndef cpu_swapin 555 void cpu_swapin(struct lwp *); 556 #endif 557 #ifndef cpu_swapout 558 void cpu_swapout(struct lwp *); 559 #endif 560 561 /* uvm_aobj.c */ 562 struct uvm_object *uao_create(vsize_t, int); 563 void uao_detach(struct uvm_object *); 564 void uao_detach_locked(struct uvm_object *); 565 void uao_reference(struct uvm_object *); 566 void uao_reference_locked(struct uvm_object *); 567 568 /* uvm_bio.c */ 569 void ubc_init(void); 570 void * ubc_alloc(struct uvm_object *, voff_t, vsize_t *, int, 571 int); 572 void ubc_release(void *, int); 573 void ubc_flush(struct uvm_object *, voff_t, voff_t); 574 575 /* uvm_fault.c */ 576 #define uvm_fault(m, a, p) uvm_fault_internal(m, a, p, 0) 577 int uvm_fault_internal(struct vm_map *, vaddr_t, vm_prot_t, int); 578 /* handle a page fault */ 579 580 /* uvm_glue.c */ 581 #if defined(KGDB) 582 void uvm_chgkprot(caddr_t, size_t, int); 583 #endif 584 void uvm_proc_fork(struct proc *, struct proc *, boolean_t); 585 void uvm_lwp_fork(struct lwp *, struct lwp *, 586 void *, size_t, void (*)(void *), void *); 587 int uvm_coredump_walkmap(struct proc *, 588 void *, 589 int (*)(struct proc *, void *, 590 struct uvm_coredump_state *), void *); 591 void uvm_proc_exit(struct proc *); 592 void uvm_lwp_exit(struct lwp *); 593 void uvm_init_limits(struct proc *); 594 boolean_t uvm_kernacc(caddr_t, size_t, int); 595 __dead void uvm_scheduler(void) __attribute__((noreturn)); 596 void uvm_swapin(struct lwp *); 597 boolean_t uvm_uarea_alloc(vaddr_t *); 598 void uvm_uarea_drain(boolean_t); 599 int uvm_vslock(struct proc *, caddr_t, size_t, vm_prot_t); 600 void uvm_vsunlock(struct proc *, caddr_t, size_t); 601 602 603 /* uvm_init.c */ 604 void uvm_init(void); 605 606 /* uvm_io.c */ 607 int uvm_io(struct vm_map *, struct uio *); 608 609 /* uvm_km.c */ 610 vaddr_t uvm_km_alloc(struct vm_map *, vsize_t, vsize_t, 611 uvm_flag_t); 612 void uvm_km_free(struct vm_map *, vaddr_t, vsize_t, 613 uvm_flag_t); 614 615 struct vm_map *uvm_km_suballoc(struct vm_map *, vaddr_t *, 616 vaddr_t *, vsize_t, int, boolean_t, 617 struct vm_map_kernel *); 618 vaddr_t uvm_km_alloc_poolpage(struct vm_map *, boolean_t); 619 void uvm_km_free_poolpage(struct vm_map *, vaddr_t); 620 vaddr_t uvm_km_alloc_poolpage_cache(struct vm_map *, boolean_t); 621 void uvm_km_free_poolpage_cache(struct vm_map *, vaddr_t); 622 void uvm_km_vacache_init(struct vm_map *, 623 const char *, size_t); 624 625 /* uvm_map.c */ 626 int uvm_map(struct vm_map *, vaddr_t *, vsize_t, 627 struct uvm_object *, voff_t, vsize_t, 628 uvm_flag_t); 629 int uvm_map_pageable(struct vm_map *, vaddr_t, 630 vaddr_t, boolean_t, int); 631 int uvm_map_pageable_all(struct vm_map *, int, vsize_t); 632 boolean_t uvm_map_checkprot(struct vm_map *, vaddr_t, 633 vaddr_t, vm_prot_t); 634 int uvm_map_protect(struct vm_map *, vaddr_t, 635 vaddr_t, vm_prot_t, boolean_t); 636 struct vmspace *uvmspace_alloc(vaddr_t, vaddr_t); 637 void uvmspace_init(struct vmspace *, struct pmap *, 638 vaddr_t, vaddr_t); 639 void uvmspace_exec(struct lwp *, vaddr_t, vaddr_t); 640 struct vmspace *uvmspace_fork(struct vmspace *); 641 void uvmspace_addref(struct vmspace *); 642 void uvmspace_free(struct vmspace *); 643 void uvmspace_share(struct proc *, struct proc *); 644 void uvmspace_unshare(struct lwp *); 645 646 647 /* uvm_meter.c */ 648 void uvm_meter(void); 649 int uvm_sysctl(int *, u_int, void *, size_t *, 650 void *, size_t, struct proc *); 651 void uvm_pctparam_set(struct uvm_pctparam *, int); 652 653 /* uvm_mmap.c */ 654 int uvm_mmap(struct vm_map *, vaddr_t *, vsize_t, 655 vm_prot_t, vm_prot_t, int, 656 void *, voff_t, vsize_t); 657 vaddr_t uvm_default_mapaddr(struct proc *, vaddr_t, vsize_t); 658 659 /* uvm_mremap.c */ 660 int uvm_mremap(struct vm_map *, vaddr_t, vsize_t, 661 struct vm_map *, vaddr_t *, vsize_t, 662 struct proc *, int); 663 #define UVM_MREMAP_FIXED 1 664 665 /* uvm_page.c */ 666 struct vm_page *uvm_pagealloc_strat(struct uvm_object *, 667 voff_t, struct vm_anon *, int, int, int); 668 #define uvm_pagealloc(obj, off, anon, flags) \ 669 uvm_pagealloc_strat((obj), (off), (anon), (flags), \ 670 UVM_PGA_STRAT_NORMAL, 0) 671 void uvm_pagereplace(struct vm_page *, 672 struct vm_page *); 673 void uvm_pagerealloc(struct vm_page *, 674 struct uvm_object *, voff_t); 675 /* Actually, uvm_page_physload takes PF#s which need their own type */ 676 void uvm_page_physload(paddr_t, paddr_t, paddr_t, 677 paddr_t, int); 678 void uvm_setpagesize(void); 679 680 /* uvm_pager.c */ 681 void uvm_aio_biodone1(struct buf *); 682 void uvm_aio_biodone(struct buf *); 683 void uvm_aio_aiodone(struct buf *); 684 685 /* uvm_pdaemon.c */ 686 void uvm_pageout(void *); 687 void uvm_aiodone_daemon(void *); 688 689 /* uvm_pglist.c */ 690 int uvm_pglistalloc(psize_t, paddr_t, paddr_t, 691 paddr_t, paddr_t, struct pglist *, int, int); 692 void uvm_pglistfree(struct pglist *); 693 694 /* uvm_swap.c */ 695 void uvm_swap_init(void); 696 697 /* uvm_unix.c */ 698 int uvm_grow(struct proc *, vaddr_t); 699 700 /* uvm_user.c */ 701 void uvm_deallocate(struct vm_map *, vaddr_t, vsize_t); 702 703 /* uvm_vnode.c */ 704 void uvm_vnp_setsize(struct vnode *, voff_t); 705 void uvm_vnp_sync(struct mount *); 706 struct uvm_object *uvn_attach(void *, vm_prot_t); 707 int uvn_findpages(struct uvm_object *, voff_t, 708 int *, struct vm_page **, int); 709 void uvm_vnp_zerorange(struct vnode *, off_t, size_t); 710 711 /* kern_malloc.c */ 712 void kmeminit_nkmempages(void); 713 void kmeminit(void); 714 extern int nkmempages; 715 716 #endif /* _KERNEL */ 717 718 #endif /* _UVM_UVM_EXTERN_H_ */ 719