| 1 | /* $NetBSD: uvm_extern.h,v 1.198 2016/07/20 12:38:43 maxv Exp $ */ |
| 2 | |
| 3 | /* |
| 4 | * Copyright (c) 1997 Charles D. Cranor and Washington University. |
| 5 | * All rights reserved. |
| 6 | * |
| 7 | * Redistribution and use in source and binary forms, with or without |
| 8 | * modification, are permitted provided that the following conditions |
| 9 | * are met: |
| 10 | * 1. Redistributions of source code must retain the above copyright |
| 11 | * notice, this list of conditions and the following disclaimer. |
| 12 | * 2. Redistributions in binary form must reproduce the above copyright |
| 13 | * notice, this list of conditions and the following disclaimer in the |
| 14 | * documentation and/or other materials provided with the distribution. |
| 15 | * |
| 16 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
| 17 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| 18 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
| 19 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
| 20 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
| 21 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| 22 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| 23 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 24 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
| 25 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 26 | * |
| 27 | * from: Id: uvm_extern.h,v 1.1.2.21 1998/02/07 01:16:53 chs Exp |
| 28 | */ |
| 29 | |
| 30 | /*- |
| 31 | * Copyright (c) 1991, 1992, 1993 |
| 32 | * The Regents of the University of California. All rights reserved. |
| 33 | * |
| 34 | * Redistribution and use in source and binary forms, with or without |
| 35 | * modification, are permitted provided that the following conditions |
| 36 | * are met: |
| 37 | * 1. Redistributions of source code must retain the above copyright |
| 38 | * notice, this list of conditions and the following disclaimer. |
| 39 | * 2. Redistributions in binary form must reproduce the above copyright |
| 40 | * notice, this list of conditions and the following disclaimer in the |
| 41 | * documentation and/or other materials provided with the distribution. |
| 42 | * 3. Neither the name of the University nor the names of its contributors |
| 43 | * may be used to endorse or promote products derived from this software |
| 44 | * without specific prior written permission. |
| 45 | * |
| 46 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
| 47 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 48 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 49 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
| 50 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| 51 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| 52 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| 53 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| 54 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| 55 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| 56 | * SUCH DAMAGE. |
| 57 | * |
| 58 | * @(#)vm_extern.h 8.5 (Berkeley) 5/3/95 |
| 59 | */ |
| 60 | |
| 61 | #ifndef _UVM_UVM_EXTERN_H_ |
| 62 | #define _UVM_UVM_EXTERN_H_ |
| 63 | |
| 64 | /* |
| 65 | * uvm_extern.h: this file defines the external interface to the VM system. |
| 66 | * |
| 67 | * this should be the only file included by non-VM parts of the kernel |
| 68 | * which need access to VM services. if you want to know the interface |
| 69 | * to the MI VM layer without knowing the details, this is the file to |
| 70 | * learn. |
| 71 | * |
| 72 | * NOTE: vm system calls are prototyped in syscallargs.h |
| 73 | */ |
| 74 | |
| 75 | /* |
| 76 | * defines |
| 77 | */ |
| 78 | |
| 79 | /* |
| 80 | * the following defines are for uvm_map and functions which call it. |
| 81 | */ |
| 82 | |
| 83 | /* protections bits */ |
| 84 | #define UVM_PROT_MASK 0x07 /* protection mask */ |
| 85 | #define UVM_PROT_NONE 0x00 /* protection none */ |
| 86 | #define UVM_PROT_ALL 0x07 /* everything */ |
| 87 | #define UVM_PROT_READ 0x01 /* read */ |
| 88 | #define UVM_PROT_WRITE 0x02 /* write */ |
| 89 | #define UVM_PROT_EXEC 0x04 /* exec */ |
| 90 | |
| 91 | /* protection short codes */ |
| 92 | #define UVM_PROT_R 0x01 /* read */ |
| 93 | #define UVM_PROT_W 0x02 /* write */ |
| 94 | #define UVM_PROT_RW 0x03 /* read-write */ |
| 95 | #define UVM_PROT_X 0x04 /* exec */ |
| 96 | #define UVM_PROT_RX 0x05 /* read-exec */ |
| 97 | #define UVM_PROT_WX 0x06 /* write-exec */ |
| 98 | #define UVM_PROT_RWX 0x07 /* read-write-exec */ |
| 99 | |
| 100 | /* 0x08: not used */ |
| 101 | |
| 102 | /* inherit codes */ |
| 103 | #define UVM_INH_MASK 0x30 /* inherit mask */ |
| 104 | #define UVM_INH_SHARE 0x00 /* "share" */ |
| 105 | #define UVM_INH_COPY 0x10 /* "copy" */ |
| 106 | #define UVM_INH_NONE 0x20 /* "none" */ |
| 107 | #define UVM_INH_DONATE 0x30 /* "donate" << not used */ |
| 108 | |
| 109 | /* 0x40, 0x80: not used */ |
| 110 | |
| 111 | /* bits 0x700: max protection, 0x800: not used */ |
| 112 | |
| 113 | /* bits 0x7000: advice, 0x8000: not used */ |
| 114 | /* advice: matches MADV_* from sys/mman.h and POSIX_FADV_* from sys/fcntl.h */ |
| 115 | #define UVM_ADV_NORMAL 0x0 /* 'normal' */ |
| 116 | #define UVM_ADV_RANDOM 0x1 /* 'random' */ |
| 117 | #define UVM_ADV_SEQUENTIAL 0x2 /* 'sequential' */ |
| 118 | #define UVM_ADV_WILLNEED 0x3 /* pages will be needed */ |
| 119 | #define UVM_ADV_DONTNEED 0x4 /* pages won't be needed */ |
| 120 | #define UVM_ADV_NOREUSE 0x5 /* pages will be used only once */ |
| 121 | #define UVM_ADV_MASK 0x7 /* mask */ |
| 122 | |
| 123 | /* bits 0xffff0000: mapping flags */ |
| 124 | #define UVM_FLAG_FIXED 0x010000 /* find space */ |
| 125 | #define UVM_FLAG_OVERLAY 0x020000 /* establish overlay */ |
| 126 | #define UVM_FLAG_NOMERGE 0x040000 /* don't merge map entries */ |
| 127 | #define UVM_FLAG_COPYONW 0x080000 /* set copy_on_write flag */ |
| 128 | #define UVM_FLAG_AMAPPAD 0x100000 /* for bss: pad amap to reduce allocations */ |
| 129 | #define UVM_FLAG_TRYLOCK 0x200000 /* fail if we can not lock map */ |
| 130 | #define UVM_FLAG_NOWAIT 0x400000 /* not allowed to sleep */ |
| 131 | #define UVM_FLAG_WAITVA 0x800000 /* wait for va */ |
| 132 | #define UVM_FLAG_VAONLY 0x2000000 /* unmap: no pages are mapped */ |
| 133 | #define UVM_FLAG_COLORMATCH 0x4000000 /* match color given in off */ |
| 134 | |
| 135 | /* macros to extract info */ |
| 136 | #define UVM_PROTECTION(X) ((X) & UVM_PROT_MASK) |
| 137 | #define UVM_INHERIT(X) (((X) & UVM_INH_MASK) >> 4) |
| 138 | #define UVM_MAXPROTECTION(X) (((X) >> 8) & UVM_PROT_MASK) |
| 139 | #define UVM_ADVICE(X) (((X) >> 12) & UVM_ADV_MASK) |
| 140 | |
| 141 | #define UVM_MAPFLAG(PROT,MAXPROT,INH,ADVICE,FLAGS) \ |
| 142 | (((MAXPROT) << 8)|(PROT)|(INH)|((ADVICE) << 12)|(FLAGS)) |
| 143 | |
| 144 | /* magic offset value: offset not known(obj) or don't care(!obj) */ |
| 145 | #define UVM_UNKNOWN_OFFSET ((voff_t) -1) |
| 146 | |
| 147 | /* |
| 148 | * the following defines are for uvm_km_alloc/free's flags |
| 149 | */ |
| 150 | #define UVM_KMF_WIRED 0x1 /* allocation type: wired */ |
| 151 | #define UVM_KMF_PAGEABLE 0x2 /* allocation type: pageable */ |
| 152 | #define UVM_KMF_VAONLY 0x4 /* allocation type: VA only */ |
| 153 | #define UVM_KMF_TYPEMASK (UVM_KMF_VAONLY | UVM_KMF_PAGEABLE | UVM_KMF_WIRED) |
| 154 | #define UVM_KMF_CANFAIL 0x8 /* caller handles failure */ |
| 155 | #define UVM_KMF_ZERO 0x10 /* want zero filled memory */ |
| 156 | #define UVM_KMF_EXEC 0x20 /* need executable mapping */ |
| 157 | #define UVM_KMF_TRYLOCK UVM_FLAG_TRYLOCK /* try locking only */ |
| 158 | #define UVM_KMF_NOWAIT UVM_FLAG_NOWAIT /* not allowed to sleep */ |
| 159 | #define UVM_KMF_WAITVA UVM_FLAG_WAITVA /* sleep for va */ |
| 160 | #define UVM_KMF_COLORMATCH UVM_FLAG_COLORMATCH /* start at color in align */ |
| 161 | |
| 162 | /* |
| 163 | * the following defines the strategies for uvm_pagealloc_strat() |
| 164 | */ |
| 165 | #define UVM_PGA_STRAT_NORMAL 0 /* priority (low id to high) walk */ |
| 166 | #define UVM_PGA_STRAT_ONLY 1 /* only specified free list */ |
| 167 | #define UVM_PGA_STRAT_FALLBACK 2 /* ONLY falls back on NORMAL */ |
| 168 | |
| 169 | /* |
| 170 | * flags for uvm_pagealloc_strat() |
| 171 | */ |
| 172 | #define UVM_PGA_USERESERVE 0x0001 /* ok to use reserve pages */ |
| 173 | #define UVM_PGA_ZERO 0x0002 /* returned page must be zero'd */ |
| 174 | |
| 175 | /* |
| 176 | * flags for ubc_alloc() |
| 177 | */ |
| 178 | #define UBC_READ 0x001 /* reading from object */ |
| 179 | #define UBC_WRITE 0x002 /* writing to object */ |
| 180 | #define UBC_FAULTBUSY 0x004 /* nobody else is using these pages, so busy |
| 181 | * them at alloc and unbusy at release (e.g., |
| 182 | * for writes extending a file) */ |
| 183 | |
| 184 | /* |
| 185 | * flags for ubc_release() |
| 186 | */ |
| 187 | #define UBC_UNMAP 0x010 /* unmap pages now -- don't leave the |
| 188 | * mappings cached indefinitely */ |
| 189 | |
| 190 | /* |
| 191 | * flags for ubc_uiomove() |
| 192 | */ |
| 193 | #define UBC_PARTIALOK 0x100 /* return early on error; otherwise, zero all |
| 194 | * remaining bytes after error */ |
| 195 | |
| 196 | /* |
| 197 | * flags for uvn_findpages(). |
| 198 | */ |
| 199 | #define UFP_ALL 0x00 |
| 200 | #define UFP_NOWAIT 0x01 |
| 201 | #define UFP_NOALLOC 0x02 |
| 202 | #define UFP_NOCACHE 0x04 |
| 203 | #define UFP_NORDONLY 0x08 |
| 204 | #define UFP_DIRTYONLY 0x10 |
| 205 | #define UFP_BACKWARD 0x20 |
| 206 | |
| 207 | /* |
| 208 | * lockflags that control the locking behavior of various functions. |
| 209 | */ |
| 210 | #define UVM_LK_ENTER 0x00000001 /* map locked on entry */ |
| 211 | #define UVM_LK_EXIT 0x00000002 /* leave map locked on exit */ |
| 212 | |
| 213 | /* |
| 214 | * Default number of pages to allocate on the stack |
| 215 | */ |
| 216 | #define UBC_MAX_PAGES 8 |
| 217 | |
| 218 | /* |
| 219 | * Value representing inactive emap. |
| 220 | */ |
| 221 | #define UVM_EMAP_INACTIVE (0) |
| 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 vm_map_entry; |
| 240 | struct vm_map; |
| 241 | struct vm_page; |
| 242 | struct vmtotal; |
| 243 | |
| 244 | /* |
| 245 | * uvm_pctparam: parameter to be shown as percentage to user. |
| 246 | */ |
| 247 | |
| 248 | #define UVM_PCTPARAM_SHIFT 8 |
| 249 | #define UVM_PCTPARAM_SCALE (1 << UVM_PCTPARAM_SHIFT) |
| 250 | #define UVM_PCTPARAM_APPLY(pct, x) \ |
| 251 | (((x) * (pct)->pct_scaled) >> UVM_PCTPARAM_SHIFT) |
| 252 | struct uvm_pctparam { |
| 253 | int pct_pct; /* percent [0, 100] */ /* should be the first member */ |
| 254 | int pct_scaled; |
| 255 | int (*pct_check)(struct uvm_pctparam *, int); |
| 256 | }; |
| 257 | |
| 258 | /* |
| 259 | * uvmexp: global data structures that are exported to parts of the kernel |
| 260 | * other than the vm system. |
| 261 | */ |
| 262 | |
| 263 | struct uvmexp { |
| 264 | /* vm_page constants */ |
| 265 | int pagesize; /* size of a page (PAGE_SIZE): must be power of 2 */ |
| 266 | int pagemask; /* page mask */ |
| 267 | int pageshift; /* page shift */ |
| 268 | |
| 269 | /* vm_page counters */ |
| 270 | int npages; /* number of pages we manage */ |
| 271 | int free; /* number of free pages */ |
| 272 | int paging; /* number of pages in the process of being paged out */ |
| 273 | int wired; /* number of wired pages */ |
| 274 | |
| 275 | /* |
| 276 | * Adding anything before this line will break binary compatibility |
| 277 | * with top(1) on NetBSD 1.5. |
| 278 | */ |
| 279 | |
| 280 | int ncolors; /* number of page color buckets: must be p-o-2 */ |
| 281 | int colormask; /* color bucket mask */ |
| 282 | |
| 283 | int zeropages; /* number of zero'd pages */ |
| 284 | int reserve_pagedaemon; /* number of pages reserved for pagedaemon */ |
| 285 | int reserve_kernel; /* number of pages reserved for kernel */ |
| 286 | unsigned anonpages; /* number of pages used by anon mappings */ |
| 287 | unsigned filepages; /* number of pages used by cached file data */ |
| 288 | unsigned execpages; /* number of pages used by cached exec data */ |
| 289 | |
| 290 | /* pageout params */ |
| 291 | int freemin; /* min number of free pages */ |
| 292 | int freetarg; /* target number of free pages */ |
| 293 | int wiredmax; /* max number of wired pages */ |
| 294 | |
| 295 | /* swap */ |
| 296 | int nswapdev; /* number of configured swap devices in system */ |
| 297 | int swpages; /* number of PAGE_SIZE'ed swap pages */ |
| 298 | int swpgavail; /* number of swap pages currently available */ |
| 299 | int swpginuse; /* number of swap pages in use */ |
| 300 | int swpgonly; /* number of swap pages in use, not also in RAM */ |
| 301 | int nswget; /* number of times fault calls uvm_swap_get() */ |
| 302 | |
| 303 | /* stat counters. XXX: should be 64-bit counters */ |
| 304 | int _unused_faults; /* page fault count */ |
| 305 | int _unused_traps; /* trap count */ |
| 306 | int _unused_intrs; /* interrupt count */ |
| 307 | int _unused_swtch; /* context switch count */ |
| 308 | int _unused_softs; /* software interrupt count */ |
| 309 | int _unused_syscalls; /* system calls */ |
| 310 | int pageins; /* pagein operation count */ |
| 311 | /* pageouts are in pdpageouts below */ |
| 312 | int _unused1; |
| 313 | int _unused2; |
| 314 | int pgswapin; /* pages swapped in */ |
| 315 | int pgswapout; /* pages swapped out */ |
| 316 | int forks; /* forks */ |
| 317 | int forks_ppwait; /* forks where parent waits */ |
| 318 | int forks_sharevm; /* forks where vmspace is shared */ |
| 319 | int pga_zerohit; /* pagealloc where zero wanted and zero |
| 320 | was available */ |
| 321 | int pga_zeromiss; /* pagealloc where zero wanted and zero |
| 322 | not available */ |
| 323 | int zeroaborts; /* number of times page zeroing was |
| 324 | aborted */ |
| 325 | int colorhit; /* pagealloc where we got optimal color */ |
| 326 | int colormiss; /* pagealloc where we didn't */ |
| 327 | int cpuhit; /* pagealloc where we allocated locally */ |
| 328 | int cpumiss; /* 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 _unused3; |
| 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; /* unused; was nanon */ |
| 396 | int64_t cpuhit; |
| 397 | int64_t cpumiss; |
| 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; /* unused */ |
| 406 | int64_t swapouts; /* unused */ |
| 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 unused4; |
| 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 | /* MD code needs this without including <uvm/uvm.h> */ |
| 457 | extern bool vm_page_zero_enable; |
| 458 | #endif |
| 459 | |
| 460 | /* |
| 461 | * Finally, bring in standard UVM headers. |
| 462 | */ |
| 463 | #include <sys/vmmeter.h> |
| 464 | #include <sys/queue.h> |
| 465 | #include <sys/lock.h> |
| 466 | #ifdef _KERNEL |
| 467 | #include <sys/vmem.h> |
| 468 | #endif |
| 469 | #include <uvm/uvm_param.h> |
| 470 | #include <uvm/uvm_prot.h> |
| 471 | #include <uvm/uvm_pmap.h> |
| 472 | #if defined(_KERNEL) || defined(_KMEMUSER) |
| 473 | #include <uvm/uvm_map.h> |
| 474 | #include <uvm/uvm_pager.h> |
| 475 | #endif |
| 476 | |
| 477 | /* |
| 478 | * helpers for calling ubc_release() |
| 479 | */ |
| 480 | #ifdef PMAP_CACHE_VIVT |
| 481 | #define UBC_WANT_UNMAP(vp) (((vp)->v_iflag & VI_TEXT) != 0) |
| 482 | #else |
| 483 | #define UBC_WANT_UNMAP(vp) false |
| 484 | #endif |
| 485 | #define UBC_UNMAP_FLAG(vp) (UBC_WANT_UNMAP(vp) ? UBC_UNMAP : 0) |
| 486 | |
| 487 | #if defined(_KERNEL) || defined(_KMEMUSER) |
| 488 | /* |
| 489 | * Shareable process virtual address space. |
| 490 | * May eventually be merged with vm_map. |
| 491 | * Several fields are temporary (text, data stuff). |
| 492 | */ |
| 493 | struct vmspace { |
| 494 | struct vm_map vm_map; /* VM address map */ |
| 495 | int vm_refcnt; /* number of references * |
| 496 | * note: protected by vm_map.ref_lock */ |
| 497 | void * vm_shm; /* SYS5 shared memory private data XXX */ |
| 498 | /* we copy from vm_startcopy to the end of the structure on fork */ |
| 499 | #define vm_startcopy vm_rssize |
| 500 | segsz_t ; /* current resident set size in pages */ |
| 501 | segsz_t ; /* resident set size before last swap */ |
| 502 | segsz_t vm_tsize; /* text size (pages) XXX */ |
| 503 | segsz_t vm_dsize; /* data size (pages) XXX */ |
| 504 | segsz_t vm_ssize; /* stack size (pages) */ |
| 505 | segsz_t vm_issize; /* initial unmapped stack size (pages) */ |
| 506 | void * vm_taddr; /* user virtual address of text XXX */ |
| 507 | void * vm_daddr; /* user virtual address of data XXX */ |
| 508 | void *vm_maxsaddr; /* user VA at max stack growth */ |
| 509 | void *vm_minsaddr; /* user VA at top of stack */ |
| 510 | size_t vm_aslr_delta_mmap; /* mmap() random delta for ASLR */ |
| 511 | }; |
| 512 | #define VMSPACE_IS_KERNEL_P(vm) VM_MAP_IS_KERNEL(&(vm)->vm_map) |
| 513 | #endif |
| 514 | |
| 515 | #ifdef _KERNEL |
| 516 | |
| 517 | /* |
| 518 | * used to keep state while iterating over the map for a core dump. |
| 519 | */ |
| 520 | struct uvm_coredump_state { |
| 521 | void *cookie; /* opaque for the caller */ |
| 522 | vaddr_t start; /* start of region */ |
| 523 | vaddr_t realend; /* real end of region */ |
| 524 | vaddr_t end; /* virtual end of region */ |
| 525 | vm_prot_t prot; /* protection of region */ |
| 526 | int flags; /* flags; see below */ |
| 527 | }; |
| 528 | |
| 529 | #define UVM_COREDUMP_STACK 0x01 /* region is user stack */ |
| 530 | |
| 531 | /* |
| 532 | * the various kernel maps, owned by MD code |
| 533 | */ |
| 534 | extern struct vm_map *kernel_map; |
| 535 | extern struct vm_map *phys_map; |
| 536 | |
| 537 | /* |
| 538 | * macros |
| 539 | */ |
| 540 | |
| 541 | #define vm_resident_count(vm) (pmap_resident_count((vm)->vm_map.pmap)) |
| 542 | |
| 543 | |
| 544 | /* vm_machdep.c */ |
| 545 | int vmapbuf(struct buf *, vsize_t); |
| 546 | void vunmapbuf(struct buf *, vsize_t); |
| 547 | |
| 548 | /* uvm_aobj.c */ |
| 549 | struct uvm_object *uao_create(vsize_t, int); |
| 550 | void uao_set_pgfl(struct uvm_object *, int); |
| 551 | void uao_detach(struct uvm_object *); |
| 552 | void uao_reference(struct uvm_object *); |
| 553 | |
| 554 | /* uvm_bio.c */ |
| 555 | void ubc_init(void); |
| 556 | void ubchist_init(void); |
| 557 | void * ubc_alloc(struct uvm_object *, voff_t, vsize_t *, int, |
| 558 | int); |
| 559 | void ubc_release(void *, int); |
| 560 | int ubc_uiomove(struct uvm_object *, struct uio *, vsize_t, |
| 561 | int, int); |
| 562 | void ubc_zerorange(struct uvm_object *, off_t, size_t, int); |
| 563 | void ubc_purge(struct uvm_object *); |
| 564 | |
| 565 | /* uvm_emap.c */ |
| 566 | void uvm_emap_sysinit(void); |
| 567 | #ifdef __HAVE_PMAP_EMAP |
| 568 | void uvm_emap_switch(lwp_t *); |
| 569 | #else |
| 570 | #define uvm_emap_switch(l) |
| 571 | #endif |
| 572 | |
| 573 | u_int uvm_emap_gen_return(void); |
| 574 | void uvm_emap_update(u_int); |
| 575 | |
| 576 | vaddr_t uvm_emap_alloc(vsize_t, bool); |
| 577 | void uvm_emap_free(vaddr_t, size_t); |
| 578 | |
| 579 | void uvm_emap_enter(vaddr_t, struct vm_page **, u_int); |
| 580 | void uvm_emap_remove(vaddr_t, vsize_t); |
| 581 | |
| 582 | #ifdef __HAVE_PMAP_EMAP |
| 583 | void uvm_emap_consume(u_int); |
| 584 | u_int uvm_emap_produce(void); |
| 585 | #else |
| 586 | #define uvm_emap_consume(x) |
| 587 | #define uvm_emap_produce() UVM_EMAP_INACTIVE |
| 588 | #endif |
| 589 | |
| 590 | /* uvm_fault.c */ |
| 591 | #define uvm_fault(m, a, p) uvm_fault_internal(m, a, p, 0) |
| 592 | int uvm_fault_internal(struct vm_map *, vaddr_t, vm_prot_t, int); |
| 593 | /* handle a page fault */ |
| 594 | |
| 595 | /* uvm_glue.c */ |
| 596 | #if defined(KGDB) |
| 597 | void uvm_chgkprot(void *, size_t, int); |
| 598 | #endif |
| 599 | void uvm_proc_fork(struct proc *, struct proc *, bool); |
| 600 | void uvm_lwp_fork(struct lwp *, struct lwp *, |
| 601 | void *, size_t, void (*)(void *), void *); |
| 602 | int uvm_coredump_walkmap(struct proc *, |
| 603 | int (*)(struct uvm_coredump_state *), void *); |
| 604 | int uvm_coredump_count_segs(struct proc *); |
| 605 | void uvm_proc_exit(struct proc *); |
| 606 | void uvm_lwp_exit(struct lwp *); |
| 607 | void uvm_init_limits(struct proc *); |
| 608 | bool uvm_kernacc(void *, size_t, vm_prot_t); |
| 609 | __dead void uvm_scheduler(void); |
| 610 | vaddr_t uvm_uarea_alloc(void); |
| 611 | void uvm_uarea_free(vaddr_t); |
| 612 | vaddr_t uvm_uarea_system_alloc(struct cpu_info *); |
| 613 | void uvm_uarea_system_free(vaddr_t); |
| 614 | vaddr_t uvm_lwp_getuarea(lwp_t *); |
| 615 | void uvm_lwp_setuarea(lwp_t *, vaddr_t); |
| 616 | int uvm_vslock(struct vmspace *, void *, size_t, vm_prot_t); |
| 617 | void uvm_vsunlock(struct vmspace *, void *, size_t); |
| 618 | void uvm_cpu_attach(struct cpu_info *); |
| 619 | |
| 620 | |
| 621 | /* uvm_init.c */ |
| 622 | void uvm_init(void); |
| 623 | |
| 624 | /* uvm_io.c */ |
| 625 | int uvm_io(struct vm_map *, struct uio *, int); |
| 626 | |
| 627 | /* uvm_km.c */ |
| 628 | vaddr_t uvm_km_alloc(struct vm_map *, vsize_t, vsize_t, |
| 629 | uvm_flag_t); |
| 630 | int uvm_km_protect(struct vm_map *, vaddr_t, vsize_t, |
| 631 | vm_prot_t); |
| 632 | void uvm_km_free(struct vm_map *, vaddr_t, vsize_t, |
| 633 | uvm_flag_t); |
| 634 | |
| 635 | struct vm_map *uvm_km_suballoc(struct vm_map *, vaddr_t *, |
| 636 | vaddr_t *, vsize_t, int, bool, |
| 637 | struct vm_map *); |
| 638 | #ifdef _KERNEL |
| 639 | int uvm_km_kmem_alloc(vmem_t *, vmem_size_t, vm_flag_t, |
| 640 | vmem_addr_t *); |
| 641 | void uvm_km_kmem_free(vmem_t *, vmem_addr_t, vmem_size_t); |
| 642 | bool uvm_km_va_starved_p(void); |
| 643 | #endif |
| 644 | |
| 645 | /* uvm_map.c */ |
| 646 | int uvm_map(struct vm_map *, vaddr_t *, vsize_t, |
| 647 | struct uvm_object *, voff_t, vsize_t, |
| 648 | uvm_flag_t); |
| 649 | int uvm_map_pageable(struct vm_map *, vaddr_t, |
| 650 | vaddr_t, bool, int); |
| 651 | int uvm_map_pageable_all(struct vm_map *, int, vsize_t); |
| 652 | bool uvm_map_checkprot(struct vm_map *, vaddr_t, |
| 653 | vaddr_t, vm_prot_t); |
| 654 | int uvm_map_protect(struct vm_map *, vaddr_t, |
| 655 | vaddr_t, vm_prot_t, bool); |
| 656 | struct vmspace *uvmspace_alloc(vaddr_t, vaddr_t, bool); |
| 657 | void uvmspace_init(struct vmspace *, struct pmap *, |
| 658 | vaddr_t, vaddr_t, bool); |
| 659 | void uvmspace_exec(struct lwp *, vaddr_t, vaddr_t, bool); |
| 660 | void uvmspace_spawn(struct lwp *, vaddr_t, vaddr_t, bool); |
| 661 | struct vmspace *uvmspace_fork(struct vmspace *); |
| 662 | void uvmspace_addref(struct vmspace *); |
| 663 | void uvmspace_free(struct vmspace *); |
| 664 | void uvmspace_share(struct proc *, struct proc *); |
| 665 | void uvmspace_unshare(struct lwp *); |
| 666 | |
| 667 | void uvm_whatis(uintptr_t, void (*)(const char *, ...)); |
| 668 | |
| 669 | /* uvm_meter.c */ |
| 670 | int uvm_sysctl(int *, u_int, void *, size_t *, |
| 671 | void *, size_t, struct proc *); |
| 672 | int uvm_pctparam_check(struct uvm_pctparam *, int); |
| 673 | void uvm_pctparam_set(struct uvm_pctparam *, int); |
| 674 | int uvm_pctparam_get(struct uvm_pctparam *); |
| 675 | void uvm_pctparam_init(struct uvm_pctparam *, int, |
| 676 | int (*)(struct uvm_pctparam *, int)); |
| 677 | int uvm_pctparam_createsysctlnode(struct uvm_pctparam *, |
| 678 | const char *, const char *); |
| 679 | |
| 680 | /* uvm_mmap.c */ |
| 681 | int uvm_mmap_dev(struct proc *, void **, size_t, dev_t, |
| 682 | off_t); |
| 683 | int uvm_mmap_anon(struct proc *, void **, size_t); |
| 684 | vaddr_t uvm_default_mapaddr(struct proc *, vaddr_t, vsize_t, |
| 685 | int); |
| 686 | |
| 687 | /* uvm_mremap.c */ |
| 688 | int uvm_mremap(struct vm_map *, vaddr_t, vsize_t, |
| 689 | struct vm_map *, vaddr_t *, vsize_t, |
| 690 | struct proc *, int); |
| 691 | |
| 692 | /* uvm_object.c */ |
| 693 | void uvm_obj_init(struct uvm_object *, |
| 694 | const struct uvm_pagerops *, bool, u_int); |
| 695 | void uvm_obj_setlock(struct uvm_object *, kmutex_t *); |
| 696 | void uvm_obj_destroy(struct uvm_object *, bool); |
| 697 | int uvm_obj_wirepages(struct uvm_object *, off_t, off_t, |
| 698 | struct pglist *); |
| 699 | void uvm_obj_unwirepages(struct uvm_object *, off_t, off_t); |
| 700 | |
| 701 | /* uvm_page.c */ |
| 702 | struct vm_page *uvm_pagealloc_strat(struct uvm_object *, |
| 703 | voff_t, struct vm_anon *, int, int, int); |
| 704 | #define uvm_pagealloc(obj, off, anon, flags) \ |
| 705 | uvm_pagealloc_strat((obj), (off), (anon), (flags), \ |
| 706 | UVM_PGA_STRAT_NORMAL, 0) |
| 707 | void (struct vm_page *, |
| 708 | struct vm_page *); |
| 709 | void (struct vm_page *, |
| 710 | struct uvm_object *, voff_t); |
| 711 | /* Actually, uvm_page_physload takes PF#s which need their own type */ |
| 712 | void uvm_page_physload(paddr_t, paddr_t, paddr_t, |
| 713 | paddr_t, int); |
| 714 | void uvm_setpagesize(void); |
| 715 | |
| 716 | /* uvm_pager.c */ |
| 717 | void uvm_aio_biodone(struct buf *); |
| 718 | void uvm_aio_aiodone(struct buf *); |
| 719 | void uvm_aio_aiodone_pages(struct vm_page **, int, bool, |
| 720 | int); |
| 721 | |
| 722 | /* uvm_pdaemon.c */ |
| 723 | void uvm_pageout(void *); |
| 724 | struct work; |
| 725 | void uvm_aiodone_worker(struct work *, void *); |
| 726 | void uvm_pageout_start(int); |
| 727 | void uvm_pageout_done(int); |
| 728 | void uvm_estimatepageable(int *, int *); |
| 729 | |
| 730 | /* uvm_pglist.c */ |
| 731 | int uvm_pglistalloc(psize_t, paddr_t, paddr_t, |
| 732 | paddr_t, paddr_t, struct pglist *, int, int); |
| 733 | void uvm_pglistfree(struct pglist *); |
| 734 | |
| 735 | /* uvm_swap.c */ |
| 736 | void uvm_swap_init(void); |
| 737 | |
| 738 | /* uvm_unix.c */ |
| 739 | int uvm_grow(struct proc *, vaddr_t); |
| 740 | |
| 741 | /* uvm_user.c */ |
| 742 | void uvm_deallocate(struct vm_map *, vaddr_t, vsize_t); |
| 743 | |
| 744 | /* uvm_vnode.c */ |
| 745 | void uvm_vnp_setsize(struct vnode *, voff_t); |
| 746 | void uvm_vnp_setwritesize(struct vnode *, voff_t); |
| 747 | int uvn_findpages(struct uvm_object *, voff_t, |
| 748 | int *, struct vm_page **, int); |
| 749 | bool uvn_text_p(struct uvm_object *); |
| 750 | bool uvn_clean_p(struct uvm_object *); |
| 751 | bool uvn_needs_writefault_p(struct uvm_object *); |
| 752 | |
| 753 | /* kern_malloc.c */ |
| 754 | void kmeminit_nkmempages(void); |
| 755 | extern int nkmempages; |
| 756 | |
| 757 | #endif /* _KERNEL */ |
| 758 | |
| 759 | #endif /* _UVM_UVM_EXTERN_H_ */ |
| 760 | |