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 2008 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 34 #ifdef __cplusplus 35 extern "C" { 36 #endif 37 38 #include <sys/clock.h> 39 #include <vm/hat_pte.h> 40 #include <sys/param.h> 41 #include <sys/memnode.h> 42 43 /* 44 * WARNING: vm_dep.h is included by files in common. 45 */ 46 47 #define GETTICK() tsc_read() 48 /* 49 * Do not use this function for obtaining clock tick. This 50 * is called by callers who do not need to have a guarenteed 51 * correct tick value. The proper routine to use is tsc_read(). 52 */ 53 54 extern hrtime_t randtick(); 55 extern uint_t page_create_update_flags_x86(uint_t); 56 57 extern size_t plcnt_sz(size_t); 58 #define PLCNT_SZ(ctrs_sz) (ctrs_sz = plcnt_sz(ctrs_sz)) 59 60 extern caddr_t plcnt_init(caddr_t); 61 #define PLCNT_INIT(addr) (addr = plcnt_init(addr)) 62 63 extern void plcnt_inc_dec(page_t *, int, int, long, int); 64 #define PLCNT_INCR(pp, mnode, mtype, szc, flags) \ 65 plcnt_inc_dec(pp, mtype, szc, 1l << PAGE_BSZS_SHIFT(szc), flags) 66 #define PLCNT_DECR(pp, mnode, mtype, szc, flags) \ 67 plcnt_inc_dec(pp, mtype, szc, -1l << PAGE_BSZS_SHIFT(szc), flags) 68 69 /* 70 * macro to update page list max counts. no-op on x86. 71 */ 72 #define PLCNT_XFER_NORELOC(pp) 73 74 #define PLCNT_MODIFY_MAX(pfn, cnt) mtype_modify_max(pfn, (pgcnt_t)cnt) 75 extern int memrange_num(pfn_t); 76 extern int pfn_2_mtype(pfn_t); 77 extern int mtype_func(int, int, uint_t); 78 extern void mtype_modify_max(pfn_t, long); 79 extern int mnode_pgcnt(int); 80 extern int mnode_range_cnt(int); 81 82 /* 83 * candidate counters in vm_pagelist.c are indexed by color and range 84 */ 85 #define NUM_MEM_RANGES 4 /* memory range types */ 86 #define MAX_MNODE_MRANGES NUM_MEM_RANGES 87 #define MNODE_RANGE_CNT(mnode) mnode_range_cnt(mnode) 88 #define MNODE_MAX_MRANGE(mnode) memrange_num(mem_node_config[mnode].physbase) 89 90 /* 91 * This was really badly defined, it implicitly uses mnode_maxmrange[] 92 * which is a static in vm_pagelist.c 93 */ 94 extern int mtype_2_mrange(int); 95 #define MTYPE_2_MRANGE(mnode, mtype) \ 96 (mnode_maxmrange[mnode] - mtype_2_mrange(mtype)) 97 98 /* 99 * Per page size free lists. Allocated dynamically. 100 * dimensions [mtype][mmu_page_sizes][colors] 101 * 102 * mtype specifies a physical memory range with a unique mnode. 103 */ 104 105 extern page_t ****page_freelists; 106 107 #define PAGE_FREELISTS(mnode, szc, color, mtype) \ 108 (*(page_freelists[mtype][szc] + (color))) 109 110 /* 111 * For now there is only a single size cache list. Allocated dynamically. 112 * dimensions [mtype][colors] 113 * 114 * mtype specifies a physical memory range with a unique mnode. 115 */ 116 extern page_t ***page_cachelists; 117 118 #define PAGE_CACHELISTS(mnode, color, mtype) \ 119 (*(page_cachelists[mtype] + (color))) 120 121 /* 122 * There are mutexes for both the page freelist 123 * and the page cachelist. We want enough locks to make contention 124 * reasonable, but not too many -- otherwise page_freelist_lock() gets 125 * so expensive that it becomes the bottleneck! 126 */ 127 128 #define NPC_MUTEX 16 129 130 extern kmutex_t *fpc_mutex[NPC_MUTEX]; 131 extern kmutex_t *cpc_mutex[NPC_MUTEX]; 132 133 extern page_t *page_get_mnode_freelist(int, uint_t, int, uchar_t, uint_t); 134 extern page_t *page_get_mnode_cachelist(uint_t, uint_t, int, int); 135 136 /* mem node iterator is not used on x86 */ 137 #define MEM_NODE_ITERATOR_DECL(it) 138 #define MEM_NODE_ITERATOR_INIT(pfn, mnode, szc, it) 139 140 /* 141 * interleaved_mnodes mode is never set on x86, therefore, 142 * simply return the limits of the given mnode, which then 143 * determines the length of hpm_counters array for the mnode. 144 */ 145 #define HPM_COUNTERS_LIMITS(mnode, physbase, physmax, first) \ 146 { \ 147 (physbase) = mem_node_config[(mnode)].physbase; \ 148 (physmax) = mem_node_config[(mnode)].physmax; \ 149 (first) = (mnode); \ 150 } 151 152 #define PAGE_CTRS_WRITE_LOCK(mnode) \ 153 { \ 154 rw_enter(&page_ctrs_rwlock[(mnode)], RW_WRITER);\ 155 page_freelist_lock(mnode); \ 156 } 157 158 #define PAGE_CTRS_WRITE_UNLOCK(mnode) \ 159 { \ 160 page_freelist_unlock(mnode); \ 161 rw_exit(&page_ctrs_rwlock[(mnode)]); \ 162 } 163 164 #define PAGE_GET_COLOR_SHIFT(szc, nszc) \ 165 (hw_page_array[(nszc)].hp_shift - hw_page_array[(szc)].hp_shift) 166 167 #define PAGE_CONVERT_COLOR(ncolor, szc, nszc) \ 168 ((ncolor) << PAGE_GET_COLOR_SHIFT((szc), (nszc))) 169 170 #define PFN_2_COLOR(pfn, szc, it) \ 171 (((pfn) & page_colors_mask) >> \ 172 (hw_page_array[szc].hp_shift - hw_page_array[0].hp_shift)) 173 174 #define PNUM_SIZE(szc) \ 175 (hw_page_array[(szc)].hp_pgcnt) 176 #define PNUM_SHIFT(szc) \ 177 (hw_page_array[(szc)].hp_shift - hw_page_array[0].hp_shift) 178 #define PAGE_GET_SHIFT(szc) \ 179 (hw_page_array[(szc)].hp_shift) 180 #define PAGE_GET_PAGECOLORS(szc) \ 181 (hw_page_array[(szc)].hp_colors) 182 183 /* 184 * This macro calculates the next sequential pfn with the specified 185 * color using color equivalency mask 186 */ 187 #define PAGE_NEXT_PFN_FOR_COLOR(pfn, szc, color, ceq_mask, color_mask, it) \ 188 { \ 189 uint_t pfn_shift = PAGE_BSZS_SHIFT(szc); \ 190 pfn_t spfn = pfn >> pfn_shift; \ 191 pfn_t stride = (ceq_mask) + 1; \ 192 ASSERT(((color) & ~(ceq_mask)) == 0); \ 193 ASSERT((((ceq_mask) + 1) & (ceq_mask)) == 0); \ 194 if (((spfn ^ (color)) & (ceq_mask)) == 0) { \ 195 pfn += stride << pfn_shift; \ 196 } else { \ 197 pfn = (spfn & ~(pfn_t)(ceq_mask)) | (color); \ 198 pfn = (pfn > spfn ? pfn : pfn + stride) << pfn_shift; \ 199 } \ 200 } 201 202 /* get the color equivalency mask for the next szc */ 203 #define PAGE_GET_NSZ_MASK(szc, mask) \ 204 ((mask) >> (PAGE_GET_SHIFT((szc) + 1) - PAGE_GET_SHIFT(szc))) 205 206 /* get the color of the next szc */ 207 #define PAGE_GET_NSZ_COLOR(szc, color) \ 208 ((color) >> (PAGE_GET_SHIFT((szc) + 1) - PAGE_GET_SHIFT(szc))) 209 210 /* Find the bin for the given page if it was of size szc */ 211 #define PP_2_BIN_SZC(pp, szc) (PFN_2_COLOR(pp->p_pagenum, szc, NULL)) 212 213 #define PP_2_BIN(pp) (PP_2_BIN_SZC(pp, pp->p_szc)) 214 215 #define PP_2_MEM_NODE(pp) (PFN_2_MEM_NODE(pp->p_pagenum)) 216 #define PP_2_MTYPE(pp) (pfn_2_mtype(pp->p_pagenum)) 217 #define PP_2_SZC(pp) (pp->p_szc) 218 219 #define SZCPAGES(szc) (1 << PAGE_BSZS_SHIFT(szc)) 220 #define PFN_BASE(pfnum, szc) (pfnum & ~(SZCPAGES(szc) - 1)) 221 222 /* 223 * this structure is used for walking free page lists 224 * controls when to split large pages into smaller pages, 225 * and when to coalesce smaller pages into larger pages 226 */ 227 typedef struct page_list_walker { 228 uint_t plw_colors; /* num of colors for szc */ 229 uint_t plw_color_mask; /* colors-1 */ 230 uint_t plw_bin_step; /* next bin: 1 or 2 */ 231 uint_t plw_count; /* loop count */ 232 uint_t plw_bin0; /* starting bin */ 233 uint_t plw_bin_marker; /* bin after initial jump */ 234 uint_t plw_bin_split_prev; /* last bin we tried to split */ 235 uint_t plw_do_split; /* set if OK to split */ 236 uint_t plw_split_next; /* next bin to split */ 237 uint_t plw_ceq_dif; /* number of different color groups */ 238 /* to check */ 239 uint_t plw_ceq_mask[MMU_PAGE_SIZES + 1]; /* color equiv mask */ 240 uint_t plw_bins[MMU_PAGE_SIZES + 1]; /* num of bins */ 241 } page_list_walker_t; 242 243 void page_list_walk_init(uchar_t szc, uint_t flags, uint_t bin, 244 int can_split, int use_ceq, page_list_walker_t *plw); 245 246 uint_t page_list_walk_next_bin(uchar_t szc, uint_t bin, 247 page_list_walker_t *plw); 248 249 extern struct cpu cpus[]; 250 #define CPU0 cpus 251 252 extern int mtype_init(vnode_t *, caddr_t, uint_t *, size_t); 253 #define MTYPE_INIT(mtype, vp, vaddr, flags, pgsz) \ 254 (mtype = mtype_init(vp, vaddr, &(flags), pgsz)) 255 256 /* 257 * macros to loop through the mtype range (page_get_mnode_{free,cache,any}list, 258 * and page_get_contig_pages) 259 * 260 * MTYPE_START sets the initial mtype. -1 if the mtype range specified does 261 * not contain mnode. 262 * 263 * MTYPE_NEXT sets the next mtype. -1 if there are no more valid 264 * mtype in the range. 265 */ 266 267 #define MTYPE_START(mnode, mtype, flags) \ 268 (mtype = mtype_func(mnode, mtype, flags)) 269 270 #define MTYPE_NEXT(mnode, mtype, flags) { \ 271 if (flags & PGI_MT_RANGE) { \ 272 mtype = mtype_func(mnode, mtype, flags | PGI_MT_NEXT); \ 273 } else { \ 274 mtype = -1; \ 275 } \ 276 } 277 278 extern int mtype_pgr_init(int *, page_t *, int, pgcnt_t); 279 #define MTYPE_PGR_INIT(mtype, flags, pp, mnode, pgcnt) \ 280 (mtype = mtype_pgr_init(&flags, pp, mnode, pgcnt)) 281 282 #define MNODE_PGCNT(mnode) mnode_pgcnt(mnode) 283 284 extern void mnodetype_2_pfn(int, int, pfn_t *, pfn_t *); 285 #define MNODETYPE_2_PFN(mnode, mtype, pfnlo, pfnhi) \ 286 mnodetype_2_pfn(mnode, mtype, &pfnlo, &pfnhi) 287 288 #define PC_BIN_MUTEX(mnode, bin, flags) ((flags & PG_FREE_LIST) ? \ 289 &fpc_mutex[(bin) & (NPC_MUTEX - 1)][mnode] : \ 290 &cpc_mutex[(bin) & (NPC_MUTEX - 1)][mnode]) 291 292 #define FPC_MUTEX(mnode, i) (&fpc_mutex[i][mnode]) 293 #define CPC_MUTEX(mnode, i) (&cpc_mutex[i][mnode]) 294 295 #ifdef DEBUG 296 #define CHK_LPG(pp, szc) chk_lpg(pp, szc) 297 extern void chk_lpg(page_t *, uchar_t); 298 #else 299 #define CHK_LPG(pp, szc) 300 #endif 301 302 #define FULL_REGION_CNT(rg_szc) \ 303 (LEVEL_SIZE(rg_szc) >> LEVEL_SHIFT(rg_szc - 1)) 304 305 /* Return the leader for this mapping size */ 306 #define PP_GROUPLEADER(pp, szc) \ 307 (&(pp)[-(int)((pp)->p_pagenum & (SZCPAGES(szc)-1))]) 308 309 /* Return the root page for this page based on p_szc */ 310 #define PP_PAGEROOT(pp) ((pp)->p_szc == 0 ? (pp) : \ 311 PP_GROUPLEADER((pp), (pp)->p_szc)) 312 313 /* 314 * The counter base must be per page_counter element to prevent 315 * races when re-indexing, and the base page size element should 316 * be aligned on a boundary of the given region size. 317 * 318 * We also round up the number of pages spanned by the counters 319 * for a given region to PC_BASE_ALIGN in certain situations to simplify 320 * the coding for some non-performance critical routines. 321 */ 322 323 #define PC_BASE_ALIGN ((pfn_t)1 << PAGE_BSZS_SHIFT(MMU_PAGE_SIZES-1)) 324 #define PC_BASE_ALIGN_MASK (PC_BASE_ALIGN - 1) 325 326 /* 327 * cpu/mmu-dependent vm variables 328 */ 329 extern uint_t mmu_page_sizes; 330 extern uint_t mmu_exported_page_sizes; 331 /* 332 * page sizes that legacy applications can see via getpagesizes(3c). 333 * Used to prevent legacy applications from inadvertantly using the 334 * 'new' large pagesizes (1g and above). 335 */ 336 extern uint_t mmu_legacy_page_sizes; 337 338 /* For x86, userszc is the same as the kernel's szc */ 339 #define USERSZC_2_SZC(userszc) (userszc) 340 #define SZC_2_USERSZC(szc) (szc) 341 342 /* 343 * for hw_page_map_t, sized to hold the ratio of large page to base 344 * pagesize (1024 max) 345 */ 346 typedef short hpmctr_t; 347 348 /* 349 * get the setsize of the current cpu - assume homogenous for x86 350 */ 351 extern int l2cache_sz, l2cache_linesz, l2cache_assoc; 352 353 #define L2CACHE_ALIGN l2cache_linesz 354 #define L2CACHE_ALIGN_MAX 64 355 #define CPUSETSIZE() \ 356 (l2cache_assoc ? (l2cache_sz / l2cache_assoc) : MMU_PAGESIZE) 357 358 /* 359 * Return the log2(pagesize(szc) / MMU_PAGESIZE) --- or the shift count 360 * for the number of base pages in this pagesize 361 */ 362 #define PAGE_BSZS_SHIFT(szc) (LEVEL_SHIFT(szc) - MMU_PAGESHIFT) 363 364 /* 365 * Internal PG_ flags. 366 */ 367 #define PGI_RELOCONLY 0x010000 /* opposite of PG_NORELOC */ 368 #define PGI_NOCAGE 0x020000 /* cage is disabled */ 369 #define PGI_PGCPHIPRI 0x040000 /* page_get_contig_page pri alloc */ 370 #define PGI_PGCPSZC0 0x080000 /* relocate base pagesize page */ 371 372 /* 373 * PGI range flags - should not overlap PGI flags 374 */ 375 #define PGI_MT_RANGE0 0x1000000 /* mtype range to 0 */ 376 #define PGI_MT_RANGE16M 0x2000000 /* mtype range to 16m */ 377 #define PGI_MT_RANGE4G 0x4000000 /* mtype range to 4g */ 378 #define PGI_MT_NEXT 0x8000000 /* get next mtype */ 379 #define PGI_MT_RANGE (PGI_MT_RANGE0 | PGI_MT_RANGE16M | PGI_MT_RANGE4G) 380 381 382 /* 383 * Maximum and default values for user heap, stack, private and shared 384 * anonymous memory, and user text and initialized data. 385 * Used by map_pgsz*() routines. 386 */ 387 extern size_t max_uheap_lpsize; 388 extern size_t default_uheap_lpsize; 389 extern size_t max_ustack_lpsize; 390 extern size_t default_ustack_lpsize; 391 extern size_t max_privmap_lpsize; 392 extern size_t max_uidata_lpsize; 393 extern size_t max_utext_lpsize; 394 extern size_t max_shm_lpsize; 395 extern size_t mcntl0_lpsize; 396 397 /* 398 * Sanity control. Don't use large pages regardless of user 399 * settings if there's less than priv or shm_lpg_min_physmem memory installed. 400 * The units for this variable are 8K pages. 401 */ 402 extern pgcnt_t privm_lpg_min_physmem; 403 extern pgcnt_t shm_lpg_min_physmem; 404 405 /* 406 * hash as and addr to get a bin. 407 */ 408 409 #define AS_2_BIN(as, seg, vp, addr, bin, szc) \ 410 bin = (((((uintptr_t)(addr) >> PAGESHIFT) + ((uintptr_t)(as) >> 4)) \ 411 & page_colors_mask) >> \ 412 (hw_page_array[szc].hp_shift - hw_page_array[0].hp_shift)) 413 414 /* 415 * cpu private vm data - accessed thru CPU->cpu_vm_data 416 * vc_pnum_memseg: tracks last memseg visited in page_numtopp_nolock() 417 * vc_pnext_memseg: tracks last memseg visited in page_nextn() 418 * vc_kmptr: orignal unaligned kmem pointer for this vm_cpu_data_t 419 * vc_kmsize: orignal kmem size for this vm_cpu_data_t 420 */ 421 422 typedef struct { 423 struct memseg *vc_pnum_memseg; 424 struct memseg *vc_pnext_memseg; 425 void *vc_kmptr; 426 size_t vc_kmsize; 427 } vm_cpu_data_t; 428 429 /* allocation size to ensure vm_cpu_data_t resides in its own cache line */ 430 #define VM_CPU_DATA_PADSIZE \ 431 (P2ROUNDUP(sizeof (vm_cpu_data_t), L2CACHE_ALIGN_MAX)) 432 433 /* for boot cpu before kmem is initialized */ 434 extern char vm_cpu_data0[]; 435 436 /* 437 * When a bin is empty, and we can't satisfy a color request correctly, 438 * we scan. If we assume that the programs have reasonable spatial 439 * behavior, then it will not be a good idea to use the adjacent color. 440 * Using the adjacent color would result in virtually adjacent addresses 441 * mapping into the same spot in the cache. So, if we stumble across 442 * an empty bin, skip a bunch before looking. After the first skip, 443 * then just look one bin at a time so we don't miss our cache on 444 * every look. Be sure to check every bin. Page_create() will panic 445 * if we miss a page. 446 * 447 * This also explains the `<=' in the for loops in both page_get_freelist() 448 * and page_get_cachelist(). Since we checked the target bin, skipped 449 * a bunch, then continued one a time, we wind up checking the target bin 450 * twice to make sure we get all of them bins. 451 */ 452 #define BIN_STEP 19 453 454 #ifdef VM_STATS 455 struct vmm_vmstats_str { 456 ulong_t pgf_alloc[MMU_PAGE_SIZES]; /* page_get_freelist */ 457 ulong_t pgf_allocok[MMU_PAGE_SIZES]; 458 ulong_t pgf_allocokrem[MMU_PAGE_SIZES]; 459 ulong_t pgf_allocfailed[MMU_PAGE_SIZES]; 460 ulong_t pgf_allocdeferred; 461 ulong_t pgf_allocretry[MMU_PAGE_SIZES]; 462 ulong_t pgc_alloc; /* page_get_cachelist */ 463 ulong_t pgc_allocok; 464 ulong_t pgc_allocokrem; 465 ulong_t pgc_allocokdeferred; 466 ulong_t pgc_allocfailed; 467 ulong_t pgcp_alloc[MMU_PAGE_SIZES]; /* page_get_contig_pages */ 468 ulong_t pgcp_allocfailed[MMU_PAGE_SIZES]; 469 ulong_t pgcp_allocempty[MMU_PAGE_SIZES]; 470 ulong_t pgcp_allocok[MMU_PAGE_SIZES]; 471 ulong_t ptcp[MMU_PAGE_SIZES]; /* page_trylock_contig_pages */ 472 ulong_t ptcpfreethresh[MMU_PAGE_SIZES]; 473 ulong_t ptcpfailexcl[MMU_PAGE_SIZES]; 474 ulong_t ptcpfailszc[MMU_PAGE_SIZES]; 475 ulong_t ptcpfailcage[MMU_PAGE_SIZES]; 476 ulong_t ptcpok[MMU_PAGE_SIZES]; 477 ulong_t pgmf_alloc[MMU_PAGE_SIZES]; /* page_get_mnode_freelist */ 478 ulong_t pgmf_allocfailed[MMU_PAGE_SIZES]; 479 ulong_t pgmf_allocempty[MMU_PAGE_SIZES]; 480 ulong_t pgmf_allocok[MMU_PAGE_SIZES]; 481 ulong_t pgmc_alloc; /* page_get_mnode_cachelist */ 482 ulong_t pgmc_allocfailed; 483 ulong_t pgmc_allocempty; 484 ulong_t pgmc_allocok; 485 ulong_t pladd_free[MMU_PAGE_SIZES]; /* page_list_add/sub */ 486 ulong_t plsub_free[MMU_PAGE_SIZES]; 487 ulong_t pladd_cache; 488 ulong_t plsub_cache; 489 ulong_t plsubpages_szcbig; 490 ulong_t plsubpages_szc0; 491 ulong_t pfs_req[MMU_PAGE_SIZES]; /* page_freelist_split */ 492 ulong_t pfs_demote[MMU_PAGE_SIZES]; 493 ulong_t pfc_coalok[MMU_PAGE_SIZES][MAX_MNODE_MRANGES]; 494 ulong_t ppr_reloc[MMU_PAGE_SIZES]; /* page_relocate */ 495 ulong_t ppr_relocnoroot[MMU_PAGE_SIZES]; 496 ulong_t ppr_reloc_replnoroot[MMU_PAGE_SIZES]; 497 ulong_t ppr_relocnolock[MMU_PAGE_SIZES]; 498 ulong_t ppr_relocnomem[MMU_PAGE_SIZES]; 499 ulong_t ppr_relocok[MMU_PAGE_SIZES]; 500 ulong_t ppr_copyfail; 501 /* page coalesce counter */ 502 ulong_t page_ctrs_coalesce[MMU_PAGE_SIZES][MAX_MNODE_MRANGES]; 503 /* candidates useful */ 504 ulong_t page_ctrs_cands_skip[MMU_PAGE_SIZES][MAX_MNODE_MRANGES]; 505 /* ctrs changed after locking */ 506 ulong_t page_ctrs_changed[MMU_PAGE_SIZES][MAX_MNODE_MRANGES]; 507 /* page_freelist_coalesce failed */ 508 ulong_t page_ctrs_failed[MMU_PAGE_SIZES][MAX_MNODE_MRANGES]; 509 ulong_t page_ctrs_coalesce_all; /* page coalesce all counter */ 510 ulong_t page_ctrs_cands_skip_all; /* candidates useful for all func */ 511 ulong_t restrict4gcnt; 512 ulong_t unrestrict16mcnt; /* non-DMA 16m allocs allowed */ 513 ulong_t pgpanicalloc; /* PG_PANIC allocation */ 514 ulong_t pcf_deny[MMU_PAGE_SIZES]; /* page_chk_freelist */ 515 ulong_t pcf_allow[MMU_PAGE_SIZES]; 516 }; 517 extern struct vmm_vmstats_str vmm_vmstats; 518 #endif /* VM_STATS */ 519 520 extern size_t page_ctrs_sz(void); 521 extern caddr_t page_ctrs_alloc(caddr_t); 522 extern void page_ctr_sub(int, int, page_t *, int); 523 extern page_t *page_freelist_split(uchar_t, 524 uint_t, int, int, pfn_t, pfn_t, page_list_walker_t *); 525 extern page_t *page_freelist_coalesce(int, uchar_t, uint_t, uint_t, int, 526 pfn_t); 527 extern uint_t page_get_pagecolors(uint_t); 528 extern void pfnzero(pfn_t, uint_t, uint_t); 529 530 #ifdef __cplusplus 531 } 532 #endif 533 534 #endif /* _VM_DEP_H */ 535