uvm_extern.h revision 1.52
1/* $NetBSD: uvm_extern.h,v 1.52 2000/11/27 04:36:40 nisimura 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. All advertising materials mentioning features or use of this software 50 * must display the following acknowledgement: 51 * This product includes software developed by the University of 52 * California, Berkeley and its contributors. 53 * 4. Neither the name of the University nor the names of its contributors 54 * may be used to endorse or promote products derived from this software 55 * without specific prior written permission. 56 * 57 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 58 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 59 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 60 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 61 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 62 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 63 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 64 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 65 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 66 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 67 * SUCH DAMAGE. 68 * 69 * @(#)vm_extern.h 8.5 (Berkeley) 5/3/95 70 */ 71 72#ifndef _UVM_UVM_EXTERN_H_ 73#define _UVM_UVM_EXTERN_H_ 74 75/* 76 * uvm_extern.h: this file defines the external interface to the VM system. 77 * 78 * this should be the only file included by non-VM parts of the kernel 79 * which need access to VM services. if you want to know the interface 80 * to the MI VM layer without knowing the details, this is the file to 81 * learn. 82 * 83 * NOTE: vm system calls are prototyped in syscallargs.h 84 */ 85 86/* 87 * typedefs, necessary for standard UVM headers. 88 */ 89 90typedef unsigned int uvm_flag_t; 91typedef int vm_fault_t; 92 93typedef int vm_inherit_t; /* XXX: inheritance codes */ 94typedef off_t voff_t; /* XXX: offset within a uvm_object */ 95 96union vm_map_object; 97typedef union vm_map_object vm_map_object_t; 98 99struct vm_map_entry; 100typedef struct vm_map_entry *vm_map_entry_t; 101 102struct vm_map; 103typedef struct vm_map *vm_map_t; 104 105struct vm_page; 106typedef struct vm_page *vm_page_t; 107 108/* 109 * defines 110 */ 111 112/* 113 * the following defines are for uvm_map and functions which call it. 114 */ 115 116/* protections bits */ 117#define UVM_PROT_MASK 0x07 /* protection mask */ 118#define UVM_PROT_NONE 0x00 /* protection none */ 119#define UVM_PROT_ALL 0x07 /* everything */ 120#define UVM_PROT_READ 0x01 /* read */ 121#define UVM_PROT_WRITE 0x02 /* write */ 122#define UVM_PROT_EXEC 0x04 /* exec */ 123 124/* protection short codes */ 125#define UVM_PROT_R 0x01 /* read */ 126#define UVM_PROT_W 0x02 /* write */ 127#define UVM_PROT_RW 0x03 /* read-write */ 128#define UVM_PROT_X 0x04 /* exec */ 129#define UVM_PROT_RX 0x05 /* read-exec */ 130#define UVM_PROT_WX 0x06 /* write-exec */ 131#define UVM_PROT_RWX 0x07 /* read-write-exec */ 132 133/* 0x08: not used */ 134 135/* inherit codes */ 136#define UVM_INH_MASK 0x30 /* inherit mask */ 137#define UVM_INH_SHARE 0x00 /* "share" */ 138#define UVM_INH_COPY 0x10 /* "copy" */ 139#define UVM_INH_NONE 0x20 /* "none" */ 140#define UVM_INH_DONATE 0x30 /* "donate" << not used */ 141 142/* 0x40, 0x80: not used */ 143 144/* bits 0x700: max protection, 0x800: not used */ 145 146/* bits 0x7000: advice, 0x8000: not used */ 147/* advice: matches MADV_* from sys/mman.h */ 148#define UVM_ADV_NORMAL 0x0 /* 'normal' */ 149#define UVM_ADV_RANDOM 0x1 /* 'random' */ 150#define UVM_ADV_SEQUENTIAL 0x2 /* 'sequential' */ 151/* 0x3: will need, 0x4: dontneed */ 152#define UVM_ADV_MASK 0x7 /* mask */ 153 154/* mapping flags */ 155#define UVM_FLAG_FIXED 0x010000 /* find space */ 156#define UVM_FLAG_OVERLAY 0x020000 /* establish overlay */ 157#define UVM_FLAG_NOMERGE 0x040000 /* don't merge map entries */ 158#define UVM_FLAG_COPYONW 0x080000 /* set copy_on_write flag */ 159#define UVM_FLAG_AMAPPAD 0x100000 /* for bss: pad amap to reduce malloc() */ 160#define UVM_FLAG_TRYLOCK 0x200000 /* fail if we can not lock map */ 161 162/* macros to extract info */ 163#define UVM_PROTECTION(X) ((X) & UVM_PROT_MASK) 164#define UVM_INHERIT(X) (((X) & UVM_INH_MASK) >> 4) 165#define UVM_MAXPROTECTION(X) (((X) >> 8) & UVM_PROT_MASK) 166#define UVM_ADVICE(X) (((X) >> 12) & UVM_ADV_MASK) 167 168#define UVM_MAPFLAG(PROT,MAXPROT,INH,ADVICE,FLAGS) \ 169 ((MAXPROT << 8)|(PROT)|(INH)|((ADVICE) << 12)|(FLAGS)) 170 171/* magic offset value */ 172#define UVM_UNKNOWN_OFFSET ((voff_t) -1) 173 /* offset not known(obj) or don't care(!obj) */ 174 175/* 176 * the following defines are for uvm_km_kmemalloc's flags 177 */ 178#define UVM_KMF_NOWAIT 0x1 /* matches M_NOWAIT */ 179#define UVM_KMF_VALLOC 0x2 /* allocate VA only */ 180#define UVM_KMF_TRYLOCK UVM_FLAG_TRYLOCK /* try locking only */ 181 182/* 183 * the following defines the strategies for uvm_pagealloc_strat() 184 */ 185#define UVM_PGA_STRAT_NORMAL 0 /* high -> low free list walk */ 186#define UVM_PGA_STRAT_ONLY 1 /* only specified free list */ 187#define UVM_PGA_STRAT_FALLBACK 2 /* ONLY falls back on NORMAL */ 188 189/* 190 * flags for uvm_pagealloc_strat() 191 */ 192#define UVM_PGA_USERESERVE 0x0001 /* ok to use reserve pages */ 193#define UVM_PGA_ZERO 0x0002 /* returned page must be zero'd */ 194 195/* 196 * lockflags that control the locking behavior of various functions. 197 */ 198#define UVM_LK_ENTER 0x00000001 /* map locked on entry */ 199#define UVM_LK_EXIT 0x00000002 /* leave map locked on exit */ 200 201/* 202 * structures 203 */ 204 205struct core; 206struct mount; 207struct pglist; 208struct proc; 209struct ucred; 210struct uio; 211struct uvm_object; 212struct vm_anon; 213struct vmspace; 214struct pmap; 215struct vnode; 216struct simplelock; 217 218/* 219 * uvmexp: global data structures that are exported to parts of the kernel 220 * other than the vm system. 221 */ 222 223struct uvmexp { 224 /* vm_page constants */ 225 int pagesize; /* size of a page (PAGE_SIZE): must be power of 2 */ 226 int pagemask; /* page mask */ 227 int pageshift; /* page shift */ 228 229 /* vm_page counters */ 230 int npages; /* number of pages we manage */ 231 int free; /* number of free pages */ 232 int active; /* number of active pages */ 233 int inactive; /* number of pages that we free'd but may want back */ 234 int paging; /* number of pages in the process of being paged out */ 235 int wired; /* number of wired pages */ 236 int zeropages; /* number of zero'd pages */ 237 int reserve_pagedaemon; /* number of pages reserved for pagedaemon */ 238 int reserve_kernel; /* number of pages reserved for kernel */ 239 240 /* pageout params */ 241 int freemin; /* min number of free pages */ 242 int freetarg; /* target number of free pages */ 243 int inactarg; /* target number of inactive pages */ 244 int wiredmax; /* max number of wired pages */ 245 246 /* swap */ 247 int nswapdev; /* number of configured swap devices in system */ 248 int swpages; /* number of PAGE_SIZE'ed swap pages */ 249 int swpguniq; /* number of swap pages in use, not also in RAM */ 250 int swpginuse; /* number of swap pages in use */ 251 int swpgonly; /* number of swap pages in use, not also in RAM */ 252 int nswget; /* number of times fault calls uvm_swap_get() */ 253 int nanon; /* number total of anon's in system */ 254 int nanonneeded;/* number of anons currently needed */ 255 int nfreeanon; /* number of free anon's */ 256 257 /* stat counters */ 258 int faults; /* page fault count */ 259 int traps; /* trap count */ 260 int intrs; /* interrupt count */ 261 int swtch; /* context switch count */ 262 int softs; /* software interrupt count */ 263 int syscalls; /* system calls */ 264 int pageins; /* pagein operation count */ 265 /* pageouts are in pdpageouts below */ 266 int swapins; /* swapins */ 267 int swapouts; /* swapouts */ 268 int pgswapin; /* pages swapped in */ 269 int pgswapout; /* pages swapped out */ 270 int forks; /* forks */ 271 int forks_ppwait; /* forks where parent waits */ 272 int forks_sharevm; /* forks where vmspace is shared */ 273 int pga_zerohit; /* pagealloc where zero wanted and zero 274 was available */ 275 int pga_zeromiss; /* pagealloc where zero wanted and zero 276 not available */ 277 int zeroaborts; /* number of times page zeroing was 278 aborted */ 279 280 /* fault subcounters */ 281 int fltnoram; /* number of times fault was out of ram */ 282 int fltnoanon; /* number of times fault was out of anons */ 283 int fltpgwait; /* number of times fault had to wait on a page */ 284 int fltpgrele; /* number of times fault found a released page */ 285 int fltrelck; /* number of times fault relock called */ 286 int fltrelckok; /* number of times fault relock is a success */ 287 int fltanget; /* number of times fault gets anon page */ 288 int fltanretry; /* number of times fault retrys an anon get */ 289 int fltamcopy; /* number of times fault clears "needs copy" */ 290 int fltnamap; /* number of times fault maps a neighbor anon page */ 291 int fltnomap; /* number of times fault maps a neighbor obj page */ 292 int fltlget; /* number of times fault does a locked pgo_get */ 293 int fltget; /* number of times fault does an unlocked get */ 294 int flt_anon; /* number of times fault anon (case 1a) */ 295 int flt_acow; /* number of times fault anon cow (case 1b) */ 296 int flt_obj; /* number of times fault is on object page (2a) */ 297 int flt_prcopy; /* number of times fault promotes with copy (2b) */ 298 int flt_przero; /* number of times fault promotes with zerofill (2b) */ 299 300 /* daemon counters */ 301 int pdwoke; /* number of times daemon woke up */ 302 int pdrevs; /* number of times daemon rev'd clock hand */ 303 int pdswout; /* number of times daemon called for swapout */ 304 int pdfreed; /* number of pages daemon freed since boot */ 305 int pdscans; /* number of pages daemon scaned since boot */ 306 int pdanscan; /* number of anonymous pages scanned by daemon */ 307 int pdobscan; /* number of object pages scanned by daemon */ 308 int pdreact; /* number of pages daemon reactivated since boot */ 309 int pdbusy; /* number of times daemon found a busy page */ 310 int pdpageouts; /* number of times daemon started a pageout */ 311 int pdpending; /* number of times daemon got a pending pagout */ 312 int pddeact; /* number of pages daemon deactivates */ 313 314 /* kernel memory objects: managed by uvm_km_kmemalloc() only! */ 315 struct uvm_object *kmem_object; 316 struct uvm_object *mb_object; 317}; 318 319#ifdef _KERNEL 320extern struct uvmexp uvmexp; 321#endif 322 323/* 324 * Finally, bring in standard UVM headers. 325 */ 326#include <sys/vmmeter.h> 327#include <sys/queue.h> 328#include <uvm/uvm_param.h> 329#include <sys/lock.h> 330#include <uvm/uvm_prot.h> 331#include <uvm/uvm_page.h> 332#include <uvm/uvm_pmap.h> 333#include <uvm/uvm_map.h> 334#include <uvm/uvm_fault.h> 335#include <uvm/uvm_pager.h> 336 337/* 338 * Shareable process virtual address space. 339 * May eventually be merged with vm_map. 340 * Several fields are temporary (text, data stuff). 341 */ 342struct vmspace { 343 struct vm_map vm_map; /* VM address map */ 344 int vm_refcnt; /* number of references */ 345 caddr_t vm_shm; /* SYS5 shared memory private data XXX */ 346/* we copy from vm_startcopy to the end of the structure on fork */ 347#define vm_startcopy vm_rssize 348 segsz_t vm_rssize; /* current resident set size in pages */ 349 segsz_t vm_swrss; /* resident set size before last swap */ 350 segsz_t vm_tsize; /* text size (pages) XXX */ 351 segsz_t vm_dsize; /* data size (pages) XXX */ 352 segsz_t vm_ssize; /* stack size (pages) */ 353 caddr_t vm_taddr; /* user virtual address of text XXX */ 354 caddr_t vm_daddr; /* user virtual address of data XXX */ 355 caddr_t vm_maxsaddr; /* user VA at max stack growth */ 356 caddr_t vm_minsaddr; /* user VA at top of stack */ 357}; 358 359#ifdef _KERNEL 360 361/* 362 * the various kernel maps, owned by MD code 363 */ 364extern vm_map_t exec_map; 365extern vm_map_t kernel_map; 366extern vm_map_t kmem_map; 367extern vm_map_t mb_map; 368extern vm_map_t phys_map; 369 370/* 371 * macros 372 */ 373 374/* zalloc zeros memory, alloc does not */ 375#define uvm_km_zalloc(MAP,SIZE) uvm_km_alloc1(MAP,SIZE,TRUE) 376#define uvm_km_alloc(MAP,SIZE) uvm_km_alloc1(MAP,SIZE,FALSE) 377 378#endif /* _KERNEL */ 379 380#ifdef pmap_resident_count 381#define vm_resident_count(vm) (pmap_resident_count((vm)->vm_map.pmap)) 382#else 383#define vm_resident_count(vm) ((vm)->vm_rssize) 384#endif 385 386/* XXX clean up later */ 387struct buf; 388struct loadavg; 389struct proc; 390struct pmap; 391struct vmspace; 392struct vmtotal; 393struct mount; 394struct vnode; 395struct core; 396 397#ifdef _KERNEL 398 399/* vm_machdep.c */ 400void vmapbuf __P((struct buf *, vsize_t)); 401void vunmapbuf __P((struct buf *, vsize_t)); 402void pagemove __P((caddr_t, caddr_t, size_t)); 403#ifndef cpu_swapin 404void cpu_swapin __P((struct proc *)); 405#endif 406#ifndef cpu_swapout 407void cpu_swapout __P((struct proc *)); 408#endif 409 410/* uvm_aobj.c */ 411struct uvm_object *uao_create __P((vsize_t, int)); 412void uao_detach __P((struct uvm_object *)); 413void uao_detach_locked __P((struct uvm_object *)); 414void uao_reference __P((struct uvm_object *)); 415void uao_reference_locked __P((struct uvm_object *)); 416 417/* uvm_fault.c */ 418int uvm_fault __P((vm_map_t, vaddr_t, 419 vm_fault_t, vm_prot_t)); 420 /* handle a page fault */ 421 422/* uvm_glue.c */ 423#if defined(KGDB) 424void uvm_chgkprot __P((caddr_t, size_t, int)); 425#endif 426void uvm_fork __P((struct proc *, struct proc *, boolean_t, 427 void *, size_t, void (*)(void *), void *)); 428void uvm_exit __P((struct proc *)); 429void uvm_init_limits __P((struct proc *)); 430boolean_t uvm_kernacc __P((caddr_t, size_t, int)); 431__dead void uvm_scheduler __P((void)) __attribute__((noreturn)); 432void uvm_swapin __P((struct proc *)); 433boolean_t uvm_useracc __P((caddr_t, size_t, int)); 434int uvm_vslock __P((struct proc *, caddr_t, size_t, 435 vm_prot_t)); 436void uvm_vsunlock __P((struct proc *, caddr_t, size_t)); 437 438 439/* uvm_init.c */ 440void uvm_init __P((void)); 441 /* init the uvm system */ 442 443/* uvm_io.c */ 444int uvm_io __P((vm_map_t, struct uio *)); 445 446/* uvm_km.c */ 447vaddr_t uvm_km_alloc1 __P((vm_map_t, vsize_t, boolean_t)); 448void uvm_km_free __P((vm_map_t, vaddr_t, vsize_t)); 449void uvm_km_free_wakeup __P((vm_map_t, vaddr_t, 450 vsize_t)); 451vaddr_t uvm_km_kmemalloc __P((vm_map_t, struct uvm_object *, 452 vsize_t, int)); 453struct vm_map *uvm_km_suballoc __P((vm_map_t, vaddr_t *, 454 vaddr_t *, vsize_t, int, 455 boolean_t, vm_map_t)); 456vaddr_t uvm_km_valloc __P((vm_map_t, vsize_t)); 457vaddr_t uvm_km_valloc_align __P((vm_map_t, vsize_t, vsize_t)); 458vaddr_t uvm_km_valloc_wait __P((vm_map_t, vsize_t)); 459vaddr_t uvm_km_valloc_prefer_wait __P((vm_map_t, vsize_t, 460 voff_t)); 461vaddr_t uvm_km_alloc_poolpage1 __P((vm_map_t, 462 struct uvm_object *, boolean_t)); 463void uvm_km_free_poolpage1 __P((vm_map_t, vaddr_t)); 464 465#define uvm_km_alloc_poolpage(waitok) uvm_km_alloc_poolpage1(kmem_map, \ 466 uvmexp.kmem_object, (waitok)) 467#define uvm_km_free_poolpage(addr) uvm_km_free_poolpage1(kmem_map, (addr)) 468 469/* uvm_map.c */ 470int uvm_map __P((vm_map_t, vaddr_t *, vsize_t, 471 struct uvm_object *, voff_t, vsize_t, 472 uvm_flag_t)); 473int uvm_map_pageable __P((vm_map_t, vaddr_t, 474 vaddr_t, boolean_t, int)); 475int uvm_map_pageable_all __P((vm_map_t, int, vsize_t)); 476boolean_t uvm_map_checkprot __P((vm_map_t, vaddr_t, 477 vaddr_t, vm_prot_t)); 478int uvm_map_protect __P((vm_map_t, vaddr_t, 479 vaddr_t, vm_prot_t, boolean_t)); 480struct vmspace *uvmspace_alloc __P((vaddr_t, vaddr_t, 481 boolean_t)); 482void uvmspace_init __P((struct vmspace *, struct pmap *, 483 vaddr_t, vaddr_t, boolean_t)); 484void uvmspace_exec __P((struct proc *)); 485struct vmspace *uvmspace_fork __P((struct vmspace *)); 486void uvmspace_free __P((struct vmspace *)); 487void uvmspace_share __P((struct proc *, struct proc *)); 488void uvmspace_unshare __P((struct proc *)); 489 490 491/* uvm_meter.c */ 492void uvm_meter __P((void)); 493int uvm_sysctl __P((int *, u_int, void *, size_t *, 494 void *, size_t, struct proc *)); 495 496/* uvm_mmap.c */ 497int uvm_mmap __P((vm_map_t, vaddr_t *, vsize_t, 498 vm_prot_t, vm_prot_t, int, 499 caddr_t, voff_t, vsize_t)); 500 501/* uvm_page.c */ 502struct vm_page *uvm_pagealloc_strat __P((struct uvm_object *, 503 voff_t, struct vm_anon *, int, int, int)); 504#define uvm_pagealloc(obj, off, anon, flags) \ 505 uvm_pagealloc_strat((obj), (off), (anon), (flags), \ 506 UVM_PGA_STRAT_NORMAL, 0) 507void uvm_pagerealloc __P((struct vm_page *, 508 struct uvm_object *, voff_t)); 509/* Actually, uvm_page_physload takes PF#s which need their own type */ 510void uvm_page_physload __P((paddr_t, paddr_t, 511 paddr_t, paddr_t, int)); 512void uvm_setpagesize __P((void)); 513 514/* uvm_pdaemon.c */ 515void uvm_pageout __P((void *)); 516 517/* uvm_pglist.c */ 518int uvm_pglistalloc __P((psize_t, paddr_t, 519 paddr_t, paddr_t, paddr_t, 520 struct pglist *, int, int)); 521void uvm_pglistfree __P((struct pglist *)); 522 523/* uvm_swap.c */ 524void uvm_swap_init __P((void)); 525 526/* uvm_unix.c */ 527int uvm_coredump __P((struct proc *, struct vnode *, 528 struct ucred *, struct core *)); 529int uvm_grow __P((struct proc *, vaddr_t)); 530/* should only be needed if COMPAT_NETBSD32 is defined */ 531struct core32; 532int uvm_coredump32 __P((struct proc *, struct vnode *, 533 struct ucred *, struct core32 *)); 534 535/* uvm_user.c */ 536int uvm_deallocate __P((vm_map_t, vaddr_t, vsize_t)); 537 538/* uvm_vnode.c */ 539void uvm_vnp_setsize __P((struct vnode *, voff_t)); 540void uvm_vnp_sync __P((struct mount *)); 541void uvm_vnp_terminate __P((struct vnode *)); 542 /* terminate a uvm/uvn object */ 543boolean_t uvm_vnp_uncache __P((struct vnode *)); 544struct uvm_object *uvn_attach __P((void *, vm_prot_t)); 545 546/* kern_malloc.c */ 547void kmeminit_nkmempages __P((void)); 548void kmeminit __P((void)); 549extern int nkmempages; 550 551#endif /* _KERNEL */ 552 553#endif /* _UVM_UVM_EXTERN_H_ */ 554