1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 /* 22 * Copyright 2007 Sun Microsystems, Inc. All rights reserved. 23 * Use is subject to license terms. 24 */ 25 26 /* 27 * UNIX machine dependent virtual memory support. 28 */ 29 30 #ifndef _VM_DEP_H 31 #define _VM_DEP_H 32 33 #pragma ident "%Z%%M% %I% %E% SMI" 34 35 #ifdef __cplusplus 36 extern "C" { 37 #endif 38 39 #include <sys/clock.h> 40 #include <vm/hat_pte.h> 41 #include <sys/param.h> 42 #include <sys/memnode.h> 43 44 /* 45 * WARNING: vm_dep.h is included by files in common. 46 */ 47 48 #define GETTICK() tsc_read() 49 50 extern uint_t page_create_update_flags_x86(uint_t); 51 52 extern size_t plcnt_sz(size_t); 53 #define PLCNT_SZ(ctrs_sz) (ctrs_sz = plcnt_sz(ctrs_sz)) 54 55 extern caddr_t plcnt_init(caddr_t); 56 #define PLCNT_INIT(addr) (addr = plcnt_init(addr)) 57 58 extern void plcnt_inc_dec(page_t *, int, int, long, int); 59 #define PLCNT_INCR(pp, mnode, mtype, szc, flags) \ 60 plcnt_inc_dec(pp, mtype, szc, 1l << PAGE_BSZS_SHIFT(szc), flags) 61 #define PLCNT_DECR(pp, mnode, mtype, szc, flags) \ 62 plcnt_inc_dec(pp, mtype, szc, -1l << PAGE_BSZS_SHIFT(szc), flags) 63 64 /* 65 * macro to update page list max counts. no-op on x86. 66 */ 67 #define PLCNT_XFER_NORELOC(pp) 68 69 #define PLCNT_MODIFY_MAX(pfn, cnt) mtype_modify_max(pfn, (pgcnt_t)cnt) 70 extern int memrange_num(pfn_t); 71 extern int pfn_2_mtype(pfn_t); 72 extern int mtype_func(int, int, uint_t); 73 extern void mtype_modify_max(pfn_t, long); 74 extern int mnode_pgcnt(int); 75 extern int mnode_range_cnt(int); 76 77 /* 78 * candidate counters in vm_pagelist.c are indexed by color and range 79 */ 80 #define NUM_MEM_RANGES 4 /* memory range types */ 81 #define MAX_MNODE_MRANGES NUM_MEM_RANGES 82 #define MNODE_RANGE_CNT(mnode) mnode_range_cnt(mnode) 83 #define MNODE_MAX_MRANGE(mnode) memrange_num(mem_node_config[mnode].physbase) 84 85 /* 86 * This was really badly defined, it implicitly uses mnode_maxmrange[] 87 * which is a static in vm_pagelist.c 88 */ 89 extern int mtype_2_mrange(int); 90 #define MTYPE_2_MRANGE(mnode, mtype) \ 91 (mnode_maxmrange[mnode] - mtype_2_mrange(mtype)) 92 93 /* 94 * Per page size free lists. Allocated dynamically. 95 * dimensions [mtype][mmu_page_sizes][colors] 96 * 97 * mtype specifies a physical memory range with a unique mnode. 98 */ 99 100 extern page_t ****page_freelists; 101 102 #define PAGE_FREELISTS(mnode, szc, color, mtype) \ 103 (*(page_freelists[mtype][szc] + (color))) 104 105 /* 106 * For now there is only a single size cache list. Allocated dynamically. 107 * dimensions [mtype][colors] 108 * 109 * mtype specifies a physical memory range with a unique mnode. 110 */ 111 extern page_t ***page_cachelists; 112 113 #define PAGE_CACHELISTS(mnode, color, mtype) \ 114 (*(page_cachelists[mtype] + (color))) 115 116 /* 117 * There are mutexes for both the page freelist 118 * and the page cachelist. We want enough locks to make contention 119 * reasonable, but not too many -- otherwise page_freelist_lock() gets 120 * so expensive that it becomes the bottleneck! 121 */ 122 123 #define NPC_MUTEX 16 124 125 extern kmutex_t *fpc_mutex[NPC_MUTEX]; 126 extern kmutex_t *cpc_mutex[NPC_MUTEX]; 127 128 extern page_t *page_get_mnode_freelist(int, uint_t, int, uchar_t, uint_t); 129 extern page_t *page_get_mnode_cachelist(uint_t, uint_t, int, int); 130 131 /* mem node iterator is not used on x86 */ 132 #define MEM_NODE_ITERATOR_DECL(it) 133 #define MEM_NODE_ITERATOR_INIT(pfn, mnode, it) 134 135 /* 136 * interleaved_mnodes mode is never set on x86, therefore, 137 * simply return the limits of the given mnode, which then 138 * determines the length of hpm_counters array for the mnode. 139 */ 140 #define HPM_COUNTERS_LIMITS(mnode, physbase, physmax, first) \ 141 { \ 142 (physbase) = mem_node_config[(mnode)].physbase; \ 143 (physmax) = mem_node_config[(mnode)].physmax; \ 144 (first) = (mnode); \ 145 } 146 147 #define PAGE_CTRS_WRITE_LOCK(mnode) \ 148 { \ 149 rw_enter(&page_ctrs_rwlock[(mnode)], RW_WRITER);\ 150 page_freelist_lock(mnode); \ 151 } 152 153 #define PAGE_CTRS_WRITE_UNLOCK(mnode) \ 154 { \ 155 page_freelist_unlock(mnode); \ 156 rw_exit(&page_ctrs_rwlock[(mnode)]); \ 157 } 158 159 #define PAGE_GET_COLOR_SHIFT(szc, nszc) \ 160 (hw_page_array[(nszc)].hp_shift - hw_page_array[(szc)].hp_shift) 161 162 #define PAGE_CONVERT_COLOR(ncolor, szc, nszc) \ 163 ((ncolor) << PAGE_GET_COLOR_SHIFT((szc), (nszc))) 164 165 #define PFN_2_COLOR(pfn, szc, it) \ 166 (((pfn) & page_colors_mask) >> \ 167 (hw_page_array[szc].hp_shift - hw_page_array[0].hp_shift)) 168 169 #define PNUM_SIZE(szc) \ 170 (hw_page_array[(szc)].hp_pgcnt) 171 #define PNUM_SHIFT(szc) \ 172 (hw_page_array[(szc)].hp_shift - hw_page_array[0].hp_shift) 173 #define PAGE_GET_SHIFT(szc) \ 174 (hw_page_array[(szc)].hp_shift) 175 #define PAGE_GET_PAGECOLORS(szc) \ 176 (hw_page_array[(szc)].hp_colors) 177 178 /* 179 * This macro calculates the next sequential pfn with the specified 180 * color using color equivalency mask 181 */ 182 #define PAGE_NEXT_PFN_FOR_COLOR(pfn, szc, color, ceq_mask, color_mask, it) \ 183 ASSERT(((color) & ~(ceq_mask)) == 0); \ 184 { \ 185 uint_t pfn_shift = PAGE_BSZS_SHIFT(szc); \ 186 pfn_t spfn = pfn >> pfn_shift; \ 187 pfn_t stride = (ceq_mask) + 1; \ 188 ASSERT((((ceq_mask) + 1) & (ceq_mask)) == 0); \ 189 if (((spfn ^ (color)) & (ceq_mask)) == 0) { \ 190 pfn += stride << pfn_shift; \ 191 } else { \ 192 pfn = (spfn & ~(pfn_t)(ceq_mask)) | (color); \ 193 pfn = (pfn > spfn ? pfn : pfn + stride) << pfn_shift; \ 194 } \ 195 } 196 197 /* get the color equivalency mask for the next szc */ 198 #define PAGE_GET_NSZ_MASK(szc, mask) \ 199 ((mask) >> (PAGE_GET_SHIFT((szc) + 1) - PAGE_GET_SHIFT(szc))) 200 201 /* get the color of the next szc */ 202 #define PAGE_GET_NSZ_COLOR(szc, color) \ 203 ((color) >> (PAGE_GET_SHIFT((szc) + 1) - PAGE_GET_SHIFT(szc))) 204 205 /* Find the bin for the given page if it was of size szc */ 206 #define PP_2_BIN_SZC(pp, szc) (PFN_2_COLOR(pp->p_pagenum, szc, NULL)) 207 208 #define PP_2_BIN(pp) (PP_2_BIN_SZC(pp, pp->p_szc)) 209 210 #define PP_2_MEM_NODE(pp) (PFN_2_MEM_NODE(pp->p_pagenum)) 211 #define PP_2_MTYPE(pp) (pfn_2_mtype(pp->p_pagenum)) 212 #define PP_2_SZC(pp) (pp->p_szc) 213 214 #define SZCPAGES(szc) (1 << PAGE_BSZS_SHIFT(szc)) 215 #define PFN_BASE(pfnum, szc) (pfnum & ~(SZCPAGES(szc) - 1)) 216 217 /* 218 * this structure is used for walking free page lists 219 * controls when to split large pages into smaller pages, 220 * and when to coalesce smaller pages into larger pages 221 */ 222 typedef struct page_list_walker { 223 uint_t plw_colors; /* num of colors for szc */ 224 uint_t plw_color_mask; /* colors-1 */ 225 uint_t plw_bin_step; /* next bin: 1 or 2 */ 226 uint_t plw_count; /* loop count */ 227 uint_t plw_bin0; /* starting bin */ 228 uint_t plw_bin_marker; /* bin after initial jump */ 229 uint_t plw_bin_split_prev; /* last bin we tried to split */ 230 uint_t plw_do_split; /* set if OK to split */ 231 uint_t plw_split_next; /* next bin to split */ 232 uint_t plw_ceq_dif; /* number of different color groups */ 233 /* to check */ 234 uint_t plw_ceq_mask[MMU_PAGE_SIZES + 1]; /* color equiv mask */ 235 uint_t plw_bins[MMU_PAGE_SIZES + 1]; /* num of bins */ 236 } page_list_walker_t; 237 238 void page_list_walk_init(uchar_t szc, uint_t flags, uint_t bin, 239 int can_split, int use_ceq, page_list_walker_t *plw); 240 241 uint_t page_list_walk_next_bin(uchar_t szc, uint_t bin, 242 page_list_walker_t *plw); 243 244 extern struct cpu cpus[]; 245 #define CPU0 cpus 246 247 extern int mtype_init(vnode_t *, caddr_t, uint_t *, size_t); 248 #define MTYPE_INIT(mtype, vp, vaddr, flags, pgsz) \ 249 (mtype = mtype_init(vp, vaddr, &(flags), pgsz)) 250 251 /* 252 * macros to loop through the mtype range (page_get_mnode_{free,cache,any}list, 253 * and page_get_contig_pages) 254 * 255 * MTYPE_START sets the initial mtype. -1 if the mtype range specified does 256 * not contain mnode. 257 * 258 * MTYPE_NEXT sets the next mtype. -1 if there are no more valid 259 * mtype in the range. 260 */ 261 262 #define MTYPE_START(mnode, mtype, flags) \ 263 (mtype = mtype_func(mnode, mtype, flags)) 264 265 #define MTYPE_NEXT(mnode, mtype, flags) { \ 266 if (flags & PGI_MT_RANGE) { \ 267 mtype = mtype_func(mnode, mtype, flags | PGI_MT_NEXT); \ 268 } else { \ 269 mtype = -1; \ 270 } \ 271 } 272 273 extern int mtype_pgr_init(int *, page_t *, int, pgcnt_t); 274 #define MTYPE_PGR_INIT(mtype, flags, pp, mnode, pgcnt) \ 275 (mtype = mtype_pgr_init(&flags, pp, mnode, pgcnt)) 276 277 #define MNODE_PGCNT(mnode) mnode_pgcnt(mnode) 278 279 extern void mnodetype_2_pfn(int, int, pfn_t *, pfn_t *); 280 #define MNODETYPE_2_PFN(mnode, mtype, pfnlo, pfnhi) \ 281 mnodetype_2_pfn(mnode, mtype, &pfnlo, &pfnhi) 282 283 #define PC_BIN_MUTEX(mnode, bin, flags) ((flags & PG_FREE_LIST) ? \ 284 &fpc_mutex[(bin) & (NPC_MUTEX - 1)][mnode] : \ 285 &cpc_mutex[(bin) & (NPC_MUTEX - 1)][mnode]) 286 287 #define FPC_MUTEX(mnode, i) (&fpc_mutex[i][mnode]) 288 #define CPC_MUTEX(mnode, i) (&cpc_mutex[i][mnode]) 289 290 #ifdef DEBUG 291 #define CHK_LPG(pp, szc) chk_lpg(pp, szc) 292 extern void chk_lpg(page_t *, uchar_t); 293 #else 294 #define CHK_LPG(pp, szc) 295 #endif 296 297 #define FULL_REGION_CNT(rg_szc) \ 298 (LEVEL_SIZE(rg_szc) >> LEVEL_SHIFT(rg_szc - 1)) 299 300 /* Return the leader for this mapping size */ 301 #define PP_GROUPLEADER(pp, szc) \ 302 (&(pp)[-(int)((pp)->p_pagenum & (SZCPAGES(szc)-1))]) 303 304 /* Return the root page for this page based on p_szc */ 305 #define PP_PAGEROOT(pp) ((pp)->p_szc == 0 ? (pp) : \ 306 PP_GROUPLEADER((pp), (pp)->p_szc)) 307 308 /* 309 * The counter base must be per page_counter element to prevent 310 * races when re-indexing, and the base page size element should 311 * be aligned on a boundary of the given region size. 312 * 313 * We also round up the number of pages spanned by the counters 314 * for a given region to PC_BASE_ALIGN in certain situations to simplify 315 * the coding for some non-performance critical routines. 316 */ 317 318 #define PC_BASE_ALIGN ((pfn_t)1 << PAGE_BSZS_SHIFT(MMU_PAGE_SIZES-1)) 319 #define PC_BASE_ALIGN_MASK (PC_BASE_ALIGN - 1) 320 321 /* 322 * cpu/mmu-dependent vm variables 323 */ 324 extern uint_t mmu_page_sizes; 325 extern uint_t mmu_exported_page_sizes; 326 /* 327 * page sizes that legacy applications can see via getpagesizes(3c). 328 * Used to prevent legacy applications from inadvertantly using the 329 * 'new' large pagesizes (1g and above). 330 */ 331 extern uint_t mmu_legacy_page_sizes; 332 333 /* For x86, userszc is the same as the kernel's szc */ 334 #define USERSZC_2_SZC(userszc) (userszc) 335 #define SZC_2_USERSZC(szc) (szc) 336 337 /* 338 * for hw_page_map_t, sized to hold the ratio of large page to base 339 * pagesize (1024 max) 340 */ 341 typedef short hpmctr_t; 342 343 /* 344 * get the setsize of the current cpu - assume homogenous for x86 345 */ 346 extern int l2cache_sz, l2cache_linesz, l2cache_assoc; 347 348 #define L2CACHE_ALIGN l2cache_linesz 349 #define L2CACHE_ALIGN_MAX 64 350 #define CPUSETSIZE() \ 351 (l2cache_assoc ? (l2cache_sz / l2cache_assoc) : MMU_PAGESIZE) 352 353 /* 354 * Return the log2(pagesize(szc) / MMU_PAGESIZE) --- or the shift count 355 * for the number of base pages in this pagesize 356 */ 357 #define PAGE_BSZS_SHIFT(szc) (LEVEL_SHIFT(szc) - MMU_PAGESHIFT) 358 359 /* 360 * Internal PG_ flags. 361 */ 362 #define PGI_RELOCONLY 0x010000 /* opposite of PG_NORELOC */ 363 #define PGI_NOCAGE 0x020000 /* cage is disabled */ 364 #define PGI_PGCPHIPRI 0x040000 /* page_get_contig_page pri alloc */ 365 #define PGI_PGCPSZC0 0x080000 /* relocate base pagesize page */ 366 367 /* 368 * PGI range flags - should not overlap PGI flags 369 */ 370 #define PGI_MT_RANGE0 0x1000000 /* mtype range to 0 */ 371 #define PGI_MT_RANGE16M 0x2000000 /* mtype range to 16m */ 372 #define PGI_MT_RANGE4G 0x4000000 /* mtype range to 4g */ 373 #define PGI_MT_NEXT 0x8000000 /* get next mtype */ 374 #define PGI_MT_RANGE (PGI_MT_RANGE0 | PGI_MT_RANGE16M | PGI_MT_RANGE4G) 375 376 377 /* 378 * Maximum and default values for user heap, stack, private and shared 379 * anonymous memory, and user text and initialized data. 380 * Used by map_pgsz*() routines. 381 */ 382 extern size_t max_uheap_lpsize; 383 extern size_t default_uheap_lpsize; 384 extern size_t max_ustack_lpsize; 385 extern size_t default_ustack_lpsize; 386 extern size_t max_privmap_lpsize; 387 extern size_t max_uidata_lpsize; 388 extern size_t max_utext_lpsize; 389 extern size_t max_shm_lpsize; 390 extern size_t mcntl0_lpsize; 391 392 /* 393 * Sanity control. Don't use large pages regardless of user 394 * settings if there's less than priv or shm_lpg_min_physmem memory installed. 395 * The units for this variable are 8K pages. 396 */ 397 extern pgcnt_t privm_lpg_min_physmem; 398 extern pgcnt_t shm_lpg_min_physmem; 399 400 /* 401 * hash as and addr to get a bin. 402 */ 403 404 #define AS_2_BIN(as, seg, vp, addr, bin, szc) \ 405 bin = (((((uintptr_t)(addr) >> PAGESHIFT) + ((uintptr_t)(as) >> 4)) \ 406 & page_colors_mask) >> \ 407 (hw_page_array[szc].hp_shift - hw_page_array[0].hp_shift)) 408 409 /* 410 * cpu private vm data - accessed thru CPU->cpu_vm_data 411 * vc_pnum_memseg: tracks last memseg visited in page_numtopp_nolock() 412 * vc_pnext_memseg: tracks last memseg visited in page_nextn() 413 * vc_kmptr: orignal unaligned kmem pointer for this vm_cpu_data_t 414 * vc_kmsize: orignal kmem size for this vm_cpu_data_t 415 */ 416 417 typedef struct { 418 struct memseg *vc_pnum_memseg; 419 struct memseg *vc_pnext_memseg; 420 void *vc_kmptr; 421 size_t vc_kmsize; 422 } vm_cpu_data_t; 423 424 /* allocation size to ensure vm_cpu_data_t resides in its own cache line */ 425 #define VM_CPU_DATA_PADSIZE \ 426 (P2ROUNDUP(sizeof (vm_cpu_data_t), L2CACHE_ALIGN_MAX)) 427 428 /* for boot cpu before kmem is initialized */ 429 extern char vm_cpu_data0[]; 430 431 /* 432 * When a bin is empty, and we can't satisfy a color request correctly, 433 * we scan. If we assume that the programs have reasonable spatial 434 * behavior, then it will not be a good idea to use the adjacent color. 435 * Using the adjacent color would result in virtually adjacent addresses 436 * mapping into the same spot in the cache. So, if we stumble across 437 * an empty bin, skip a bunch before looking. After the first skip, 438 * then just look one bin at a time so we don't miss our cache on 439 * every look. Be sure to check every bin. Page_create() will panic 440 * if we miss a page. 441 * 442 * This also explains the `<=' in the for loops in both page_get_freelist() 443 * and page_get_cachelist(). Since we checked the target bin, skipped 444 * a bunch, then continued one a time, we wind up checking the target bin 445 * twice to make sure we get all of them bins. 446 */ 447 #define BIN_STEP 19 448 449 #ifdef VM_STATS 450 struct vmm_vmstats_str { 451 ulong_t pgf_alloc[MMU_PAGE_SIZES]; /* page_get_freelist */ 452 ulong_t pgf_allocok[MMU_PAGE_SIZES]; 453 ulong_t pgf_allocokrem[MMU_PAGE_SIZES]; 454 ulong_t pgf_allocfailed[MMU_PAGE_SIZES]; 455 ulong_t pgf_allocdeferred; 456 ulong_t pgf_allocretry[MMU_PAGE_SIZES]; 457 ulong_t pgc_alloc; /* page_get_cachelist */ 458 ulong_t pgc_allocok; 459 ulong_t pgc_allocokrem; 460 ulong_t pgc_allocokdeferred; 461 ulong_t pgc_allocfailed; 462 ulong_t pgcp_alloc[MMU_PAGE_SIZES]; /* page_get_contig_pages */ 463 ulong_t pgcp_allocfailed[MMU_PAGE_SIZES]; 464 ulong_t pgcp_allocempty[MMU_PAGE_SIZES]; 465 ulong_t pgcp_allocok[MMU_PAGE_SIZES]; 466 ulong_t ptcp[MMU_PAGE_SIZES]; /* page_trylock_contig_pages */ 467 ulong_t ptcpfreethresh[MMU_PAGE_SIZES]; 468 ulong_t ptcpfailexcl[MMU_PAGE_SIZES]; 469 ulong_t ptcpfailszc[MMU_PAGE_SIZES]; 470 ulong_t ptcpfailcage[MMU_PAGE_SIZES]; 471 ulong_t ptcpok[MMU_PAGE_SIZES]; 472 ulong_t pgmf_alloc[MMU_PAGE_SIZES]; /* page_get_mnode_freelist */ 473 ulong_t pgmf_allocfailed[MMU_PAGE_SIZES]; 474 ulong_t pgmf_allocempty[MMU_PAGE_SIZES]; 475 ulong_t pgmf_allocok[MMU_PAGE_SIZES]; 476 ulong_t pgmc_alloc; /* page_get_mnode_cachelist */ 477 ulong_t pgmc_allocfailed; 478 ulong_t pgmc_allocempty; 479 ulong_t pgmc_allocok; 480 ulong_t pladd_free[MMU_PAGE_SIZES]; /* page_list_add/sub */ 481 ulong_t plsub_free[MMU_PAGE_SIZES]; 482 ulong_t pladd_cache; 483 ulong_t plsub_cache; 484 ulong_t plsubpages_szcbig; 485 ulong_t plsubpages_szc0; 486 ulong_t pfs_req[MMU_PAGE_SIZES]; /* page_freelist_split */ 487 ulong_t pfs_demote[MMU_PAGE_SIZES]; 488 ulong_t pfc_coalok[MMU_PAGE_SIZES][MAX_MNODE_MRANGES]; 489 ulong_t ppr_reloc[MMU_PAGE_SIZES]; /* page_relocate */ 490 ulong_t ppr_relocnoroot[MMU_PAGE_SIZES]; 491 ulong_t ppr_reloc_replnoroot[MMU_PAGE_SIZES]; 492 ulong_t ppr_relocnolock[MMU_PAGE_SIZES]; 493 ulong_t ppr_relocnomem[MMU_PAGE_SIZES]; 494 ulong_t ppr_relocok[MMU_PAGE_SIZES]; 495 ulong_t ppr_copyfail; 496 /* page coalesce counter */ 497 ulong_t page_ctrs_coalesce[MMU_PAGE_SIZES][MAX_MNODE_MRANGES]; 498 /* candidates useful */ 499 ulong_t page_ctrs_cands_skip[MMU_PAGE_SIZES][MAX_MNODE_MRANGES]; 500 /* ctrs changed after locking */ 501 ulong_t page_ctrs_changed[MMU_PAGE_SIZES][MAX_MNODE_MRANGES]; 502 /* page_freelist_coalesce failed */ 503 ulong_t page_ctrs_failed[MMU_PAGE_SIZES][MAX_MNODE_MRANGES]; 504 ulong_t page_ctrs_coalesce_all; /* page coalesce all counter */ 505 ulong_t page_ctrs_cands_skip_all; /* candidates useful for all func */ 506 ulong_t restrict4gcnt; 507 ulong_t unrestrict16mcnt; /* non-DMA 16m allocs allowed */ 508 ulong_t pgpanicalloc; /* PG_PANIC allocation */ 509 ulong_t pcf_deny[MMU_PAGE_SIZES]; /* page_chk_freelist */ 510 ulong_t pcf_allow[MMU_PAGE_SIZES]; 511 }; 512 extern struct vmm_vmstats_str vmm_vmstats; 513 #endif /* VM_STATS */ 514 515 extern size_t page_ctrs_sz(void); 516 extern caddr_t page_ctrs_alloc(caddr_t); 517 extern void page_ctr_sub(int, int, page_t *, int); 518 extern page_t *page_freelist_split(uchar_t, 519 uint_t, int, int, pfn_t, page_list_walker_t *); 520 extern page_t *page_freelist_coalesce(int, uchar_t, uint_t, uint_t, int, 521 pfn_t); 522 extern uint_t page_get_pagecolors(uint_t); 523 extern void pfnzero(pfn_t, uint_t, uint_t); 524 525 #ifdef __cplusplus 526 } 527 #endif 528 529 #endif /* _VM_DEP_H */ 530