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 #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 * Do not use this function for obtaining clock tick. This 51 * is called by callers who do not need to have a guarenteed 52 * correct tick value. The proper routine to use is tsc_read(). 53 */ 54 55 extern hrtime_t randtick(); 56 extern uint_t page_create_update_flags_x86(uint_t); 57 58 extern size_t plcnt_sz(size_t); 59 #define PLCNT_SZ(ctrs_sz) (ctrs_sz = plcnt_sz(ctrs_sz)) 60 61 extern caddr_t plcnt_init(caddr_t); 62 #define PLCNT_INIT(addr) (addr = plcnt_init(addr)) 63 64 extern void plcnt_inc_dec(page_t *, int, int, long, int); 65 #define PLCNT_INCR(pp, mnode, mtype, szc, flags) \ 66 plcnt_inc_dec(pp, mtype, szc, 1l << PAGE_BSZS_SHIFT(szc), flags) 67 #define PLCNT_DECR(pp, mnode, mtype, szc, flags) \ 68 plcnt_inc_dec(pp, mtype, szc, -1l << PAGE_BSZS_SHIFT(szc), flags) 69 70 /* 71 * macro to update page list max counts. no-op on x86. 72 */ 73 #define PLCNT_XFER_NORELOC(pp) 74 75 #define PLCNT_MODIFY_MAX(pfn, cnt) mtype_modify_max(pfn, (pgcnt_t)cnt) 76 extern int memrange_num(pfn_t); 77 extern int pfn_2_mtype(pfn_t); 78 extern int mtype_func(int, int, uint_t); 79 extern void mtype_modify_max(pfn_t, long); 80 extern int mnode_pgcnt(int); 81 extern int mnode_range_cnt(int); 82 83 /* 84 * candidate counters in vm_pagelist.c are indexed by color and range 85 */ 86 #define NUM_MEM_RANGES 4 /* memory range types */ 87 #define MAX_MNODE_MRANGES NUM_MEM_RANGES 88 #define MNODE_RANGE_CNT(mnode) mnode_range_cnt(mnode) 89 #define MNODE_MAX_MRANGE(mnode) memrange_num(mem_node_config[mnode].physbase) 90 91 /* 92 * This was really badly defined, it implicitly uses mnode_maxmrange[] 93 * which is a static in vm_pagelist.c 94 */ 95 extern int mtype_2_mrange(int); 96 #define MTYPE_2_MRANGE(mnode, mtype) \ 97 (mnode_maxmrange[mnode] - mtype_2_mrange(mtype)) 98 99 /* 100 * Per page size free lists. Allocated dynamically. 101 * dimensions [mtype][mmu_page_sizes][colors] 102 * 103 * mtype specifies a physical memory range with a unique mnode. 104 */ 105 106 extern page_t ****page_freelists; 107 108 #define PAGE_FREELISTS(mnode, szc, color, mtype) \ 109 (*(page_freelists[mtype][szc] + (color))) 110 111 /* 112 * For now there is only a single size cache list. Allocated dynamically. 113 * dimensions [mtype][colors] 114 * 115 * mtype specifies a physical memory range with a unique mnode. 116 */ 117 extern page_t ***page_cachelists; 118 119 #define PAGE_CACHELISTS(mnode, color, mtype) \ 120 (*(page_cachelists[mtype] + (color))) 121 122 /* 123 * There are mutexes for both the page freelist 124 * and the page cachelist. We want enough locks to make contention 125 * reasonable, but not too many -- otherwise page_freelist_lock() gets 126 * so expensive that it becomes the bottleneck! 127 */ 128 129 #define NPC_MUTEX 16 130 131 extern kmutex_t *fpc_mutex[NPC_MUTEX]; 132 extern kmutex_t *cpc_mutex[NPC_MUTEX]; 133 134 extern page_t *page_get_mnode_freelist(int, uint_t, int, uchar_t, uint_t); 135 extern page_t *page_get_mnode_cachelist(uint_t, uint_t, int, int); 136 137 /* mem node iterator is not used on x86 */ 138 #define MEM_NODE_ITERATOR_DECL(it) 139 #define MEM_NODE_ITERATOR_INIT(pfn, mnode, szc, it) 140 141 /* 142 * interleaved_mnodes mode is never set on x86, therefore, 143 * simply return the limits of the given mnode, which then 144 * determines the length of hpm_counters array for the mnode. 145 */ 146 #define HPM_COUNTERS_LIMITS(mnode, physbase, physmax, first) \ 147 { \ 148 (physbase) = mem_node_config[(mnode)].physbase; \ 149 (physmax) = mem_node_config[(mnode)].physmax; \ 150 (first) = (mnode); \ 151 } 152 153 #define PAGE_CTRS_WRITE_LOCK(mnode) \ 154 { \ 155 rw_enter(&page_ctrs_rwlock[(mnode)], RW_WRITER);\ 156 page_freelist_lock(mnode); \ 157 } 158 159 #define PAGE_CTRS_WRITE_UNLOCK(mnode) \ 160 { \ 161 page_freelist_unlock(mnode); \ 162 rw_exit(&page_ctrs_rwlock[(mnode)]); \ 163 } 164 165 #define PAGE_GET_COLOR_SHIFT(szc, nszc) \ 166 (hw_page_array[(nszc)].hp_shift - hw_page_array[(szc)].hp_shift) 167 168 #define PAGE_CONVERT_COLOR(ncolor, szc, nszc) \ 169 ((ncolor) << PAGE_GET_COLOR_SHIFT((szc), (nszc))) 170 171 #define PFN_2_COLOR(pfn, szc, it) \ 172 (((pfn) & page_colors_mask) >> \ 173 (hw_page_array[szc].hp_shift - hw_page_array[0].hp_shift)) 174 175 #define PNUM_SIZE(szc) \ 176 (hw_page_array[(szc)].hp_pgcnt) 177 #define PNUM_SHIFT(szc) \ 178 (hw_page_array[(szc)].hp_shift - hw_page_array[0].hp_shift) 179 #define PAGE_GET_SHIFT(szc) \ 180 (hw_page_array[(szc)].hp_shift) 181 #define PAGE_GET_PAGECOLORS(szc) \ 182 (hw_page_array[(szc)].hp_colors) 183 184 /* 185 * This macro calculates the next sequential pfn with the specified 186 * color using color equivalency mask 187 */ 188 #define PAGE_NEXT_PFN_FOR_COLOR(pfn, szc, color, ceq_mask, color_mask, it) \ 189 { \ 190 uint_t pfn_shift = PAGE_BSZS_SHIFT(szc); \ 191 pfn_t spfn = pfn >> pfn_shift; \ 192 pfn_t stride = (ceq_mask) + 1; \ 193 ASSERT(((color) & ~(ceq_mask)) == 0); \ 194 ASSERT((((ceq_mask) + 1) & (ceq_mask)) == 0); \ 195 if (((spfn ^ (color)) & (ceq_mask)) == 0) { \ 196 pfn += stride << pfn_shift; \ 197 } else { \ 198 pfn = (spfn & ~(pfn_t)(ceq_mask)) | (color); \ 199 pfn = (pfn > spfn ? pfn : pfn + stride) << pfn_shift; \ 200 } \ 201 } 202 203 /* get the color equivalency mask for the next szc */ 204 #define PAGE_GET_NSZ_MASK(szc, mask) \ 205 ((mask) >> (PAGE_GET_SHIFT((szc) + 1) - PAGE_GET_SHIFT(szc))) 206 207 /* get the color of the next szc */ 208 #define PAGE_GET_NSZ_COLOR(szc, color) \ 209 ((color) >> (PAGE_GET_SHIFT((szc) + 1) - PAGE_GET_SHIFT(szc))) 210 211 /* Find the bin for the given page if it was of size szc */ 212 #define PP_2_BIN_SZC(pp, szc) (PFN_2_COLOR(pp->p_pagenum, szc, NULL)) 213 214 #define PP_2_BIN(pp) (PP_2_BIN_SZC(pp, pp->p_szc)) 215 216 #define PP_2_MEM_NODE(pp) (PFN_2_MEM_NODE(pp->p_pagenum)) 217 #define PP_2_MTYPE(pp) (pfn_2_mtype(pp->p_pagenum)) 218 #define PP_2_SZC(pp) (pp->p_szc) 219 220 #define SZCPAGES(szc) (1 << PAGE_BSZS_SHIFT(szc)) 221 #define PFN_BASE(pfnum, szc) (pfnum & ~(SZCPAGES(szc) - 1)) 222 223 /* 224 * this structure is used for walking free page lists 225 * controls when to split large pages into smaller pages, 226 * and when to coalesce smaller pages into larger pages 227 */ 228 typedef struct page_list_walker { 229 uint_t plw_colors; /* num of colors for szc */ 230 uint_t plw_color_mask; /* colors-1 */ 231 uint_t plw_bin_step; /* next bin: 1 or 2 */ 232 uint_t plw_count; /* loop count */ 233 uint_t plw_bin0; /* starting bin */ 234 uint_t plw_bin_marker; /* bin after initial jump */ 235 uint_t plw_bin_split_prev; /* last bin we tried to split */ 236 uint_t plw_do_split; /* set if OK to split */ 237 uint_t plw_split_next; /* next bin to split */ 238 uint_t plw_ceq_dif; /* number of different color groups */ 239 /* to check */ 240 uint_t plw_ceq_mask[MMU_PAGE_SIZES + 1]; /* color equiv mask */ 241 uint_t plw_bins[MMU_PAGE_SIZES + 1]; /* num of bins */ 242 } page_list_walker_t; 243 244 void page_list_walk_init(uchar_t szc, uint_t flags, uint_t bin, 245 int can_split, int use_ceq, page_list_walker_t *plw); 246 247 uint_t page_list_walk_next_bin(uchar_t szc, uint_t bin, 248 page_list_walker_t *plw); 249 250 extern struct cpu cpus[]; 251 #define CPU0 cpus 252 253 extern int mtype_init(vnode_t *, caddr_t, uint_t *, size_t); 254 #define MTYPE_INIT(mtype, vp, vaddr, flags, pgsz) \ 255 (mtype = mtype_init(vp, vaddr, &(flags), pgsz)) 256 257 /* 258 * macros to loop through the mtype range (page_get_mnode_{free,cache,any}list, 259 * and page_get_contig_pages) 260 * 261 * MTYPE_START sets the initial mtype. -1 if the mtype range specified does 262 * not contain mnode. 263 * 264 * MTYPE_NEXT sets the next mtype. -1 if there are no more valid 265 * mtype in the range. 266 */ 267 268 #define MTYPE_START(mnode, mtype, flags) \ 269 (mtype = mtype_func(mnode, mtype, flags)) 270 271 #define MTYPE_NEXT(mnode, mtype, flags) { \ 272 if (flags & PGI_MT_RANGE) { \ 273 mtype = mtype_func(mnode, mtype, flags | PGI_MT_NEXT); \ 274 } else { \ 275 mtype = -1; \ 276 } \ 277 } 278 279 extern int mtype_pgr_init(int *, page_t *, int, pgcnt_t); 280 #define MTYPE_PGR_INIT(mtype, flags, pp, mnode, pgcnt) \ 281 (mtype = mtype_pgr_init(&flags, pp, mnode, pgcnt)) 282 283 #define MNODE_PGCNT(mnode) mnode_pgcnt(mnode) 284 285 extern void mnodetype_2_pfn(int, int, pfn_t *, pfn_t *); 286 #define MNODETYPE_2_PFN(mnode, mtype, pfnlo, pfnhi) \ 287 mnodetype_2_pfn(mnode, mtype, &pfnlo, &pfnhi) 288 289 #define PC_BIN_MUTEX(mnode, bin, flags) ((flags & PG_FREE_LIST) ? \ 290 &fpc_mutex[(bin) & (NPC_MUTEX - 1)][mnode] : \ 291 &cpc_mutex[(bin) & (NPC_MUTEX - 1)][mnode]) 292 293 #define FPC_MUTEX(mnode, i) (&fpc_mutex[i][mnode]) 294 #define CPC_MUTEX(mnode, i) (&cpc_mutex[i][mnode]) 295 296 #ifdef DEBUG 297 #define CHK_LPG(pp, szc) chk_lpg(pp, szc) 298 extern void chk_lpg(page_t *, uchar_t); 299 #else 300 #define CHK_LPG(pp, szc) 301 #endif 302 303 #define FULL_REGION_CNT(rg_szc) \ 304 (LEVEL_SIZE(rg_szc) >> LEVEL_SHIFT(rg_szc - 1)) 305 306 /* Return the leader for this mapping size */ 307 #define PP_GROUPLEADER(pp, szc) \ 308 (&(pp)[-(int)((pp)->p_pagenum & (SZCPAGES(szc)-1))]) 309 310 /* Return the root page for this page based on p_szc */ 311 #define PP_PAGEROOT(pp) ((pp)->p_szc == 0 ? (pp) : \ 312 PP_GROUPLEADER((pp), (pp)->p_szc)) 313 314 /* 315 * The counter base must be per page_counter element to prevent 316 * races when re-indexing, and the base page size element should 317 * be aligned on a boundary of the given region size. 318 * 319 * We also round up the number of pages spanned by the counters 320 * for a given region to PC_BASE_ALIGN in certain situations to simplify 321 * the coding for some non-performance critical routines. 322 */ 323 324 #define PC_BASE_ALIGN ((pfn_t)1 << PAGE_BSZS_SHIFT(MMU_PAGE_SIZES-1)) 325 #define PC_BASE_ALIGN_MASK (PC_BASE_ALIGN - 1) 326 327 /* 328 * cpu/mmu-dependent vm variables 329 */ 330 extern uint_t mmu_page_sizes; 331 extern uint_t mmu_exported_page_sizes; 332 /* 333 * page sizes that legacy applications can see via getpagesizes(3c). 334 * Used to prevent legacy applications from inadvertantly using the 335 * 'new' large pagesizes (1g and above). 336 */ 337 extern uint_t mmu_legacy_page_sizes; 338 339 /* For x86, userszc is the same as the kernel's szc */ 340 #define USERSZC_2_SZC(userszc) (userszc) 341 #define SZC_2_USERSZC(szc) (szc) 342 343 /* 344 * for hw_page_map_t, sized to hold the ratio of large page to base 345 * pagesize (1024 max) 346 */ 347 typedef short hpmctr_t; 348 349 /* 350 * get the setsize of the current cpu - assume homogenous for x86 351 */ 352 extern int l2cache_sz, l2cache_linesz, l2cache_assoc; 353 354 #define L2CACHE_ALIGN l2cache_linesz 355 #define L2CACHE_ALIGN_MAX 64 356 #define CPUSETSIZE() \ 357 (l2cache_assoc ? (l2cache_sz / l2cache_assoc) : MMU_PAGESIZE) 358 359 /* 360 * Return the log2(pagesize(szc) / MMU_PAGESIZE) --- or the shift count 361 * for the number of base pages in this pagesize 362 */ 363 #define PAGE_BSZS_SHIFT(szc) (LEVEL_SHIFT(szc) - MMU_PAGESHIFT) 364 365 /* 366 * Internal PG_ flags. 367 */ 368 #define PGI_RELOCONLY 0x010000 /* opposite of PG_NORELOC */ 369 #define PGI_NOCAGE 0x020000 /* cage is disabled */ 370 #define PGI_PGCPHIPRI 0x040000 /* page_get_contig_page pri alloc */ 371 #define PGI_PGCPSZC0 0x080000 /* relocate base pagesize page */ 372 373 /* 374 * PGI range flags - should not overlap PGI flags 375 */ 376 #define PGI_MT_RANGE0 0x1000000 /* mtype range to 0 */ 377 #define PGI_MT_RANGE16M 0x2000000 /* mtype range to 16m */ 378 #define PGI_MT_RANGE4G 0x4000000 /* mtype range to 4g */ 379 #define PGI_MT_NEXT 0x8000000 /* get next mtype */ 380 #define PGI_MT_RANGE (PGI_MT_RANGE0 | PGI_MT_RANGE16M | PGI_MT_RANGE4G) 381 382 383 /* 384 * Maximum and default values for user heap, stack, private and shared 385 * anonymous memory, and user text and initialized data. 386 * Used by map_pgsz*() routines. 387 */ 388 extern size_t max_uheap_lpsize; 389 extern size_t default_uheap_lpsize; 390 extern size_t max_ustack_lpsize; 391 extern size_t default_ustack_lpsize; 392 extern size_t max_privmap_lpsize; 393 extern size_t max_uidata_lpsize; 394 extern size_t max_utext_lpsize; 395 extern size_t max_shm_lpsize; 396 extern size_t mcntl0_lpsize; 397 398 /* 399 * Sanity control. Don't use large pages regardless of user 400 * settings if there's less than priv or shm_lpg_min_physmem memory installed. 401 * The units for this variable are 8K pages. 402 */ 403 extern pgcnt_t privm_lpg_min_physmem; 404 extern pgcnt_t shm_lpg_min_physmem; 405 406 /* 407 * hash as and addr to get a bin. 408 */ 409 410 #define AS_2_BIN(as, seg, vp, addr, bin, szc) \ 411 bin = (((((uintptr_t)(addr) >> PAGESHIFT) + ((uintptr_t)(as) >> 4)) \ 412 & page_colors_mask) >> \ 413 (hw_page_array[szc].hp_shift - hw_page_array[0].hp_shift)) 414 415 /* 416 * cpu private vm data - accessed thru CPU->cpu_vm_data 417 * vc_pnum_memseg: tracks last memseg visited in page_numtopp_nolock() 418 * vc_pnext_memseg: tracks last memseg visited in page_nextn() 419 * vc_kmptr: orignal unaligned kmem pointer for this vm_cpu_data_t 420 * vc_kmsize: orignal kmem size for this vm_cpu_data_t 421 */ 422 423 typedef struct { 424 struct memseg *vc_pnum_memseg; 425 struct memseg *vc_pnext_memseg; 426 void *vc_kmptr; 427 size_t vc_kmsize; 428 } vm_cpu_data_t; 429 430 /* allocation size to ensure vm_cpu_data_t resides in its own cache line */ 431 #define VM_CPU_DATA_PADSIZE \ 432 (P2ROUNDUP(sizeof (vm_cpu_data_t), L2CACHE_ALIGN_MAX)) 433 434 /* for boot cpu before kmem is initialized */ 435 extern char vm_cpu_data0[]; 436 437 /* 438 * When a bin is empty, and we can't satisfy a color request correctly, 439 * we scan. If we assume that the programs have reasonable spatial 440 * behavior, then it will not be a good idea to use the adjacent color. 441 * Using the adjacent color would result in virtually adjacent addresses 442 * mapping into the same spot in the cache. So, if we stumble across 443 * an empty bin, skip a bunch before looking. After the first skip, 444 * then just look one bin at a time so we don't miss our cache on 445 * every look. Be sure to check every bin. Page_create() will panic 446 * if we miss a page. 447 * 448 * This also explains the `<=' in the for loops in both page_get_freelist() 449 * and page_get_cachelist(). Since we checked the target bin, skipped 450 * a bunch, then continued one a time, we wind up checking the target bin 451 * twice to make sure we get all of them bins. 452 */ 453 #define BIN_STEP 19 454 455 #ifdef VM_STATS 456 struct vmm_vmstats_str { 457 ulong_t pgf_alloc[MMU_PAGE_SIZES]; /* page_get_freelist */ 458 ulong_t pgf_allocok[MMU_PAGE_SIZES]; 459 ulong_t pgf_allocokrem[MMU_PAGE_SIZES]; 460 ulong_t pgf_allocfailed[MMU_PAGE_SIZES]; 461 ulong_t pgf_allocdeferred; 462 ulong_t pgf_allocretry[MMU_PAGE_SIZES]; 463 ulong_t pgc_alloc; /* page_get_cachelist */ 464 ulong_t pgc_allocok; 465 ulong_t pgc_allocokrem; 466 ulong_t pgc_allocokdeferred; 467 ulong_t pgc_allocfailed; 468 ulong_t pgcp_alloc[MMU_PAGE_SIZES]; /* page_get_contig_pages */ 469 ulong_t pgcp_allocfailed[MMU_PAGE_SIZES]; 470 ulong_t pgcp_allocempty[MMU_PAGE_SIZES]; 471 ulong_t pgcp_allocok[MMU_PAGE_SIZES]; 472 ulong_t ptcp[MMU_PAGE_SIZES]; /* page_trylock_contig_pages */ 473 ulong_t ptcpfreethresh[MMU_PAGE_SIZES]; 474 ulong_t ptcpfailexcl[MMU_PAGE_SIZES]; 475 ulong_t ptcpfailszc[MMU_PAGE_SIZES]; 476 ulong_t ptcpfailcage[MMU_PAGE_SIZES]; 477 ulong_t ptcpok[MMU_PAGE_SIZES]; 478 ulong_t pgmf_alloc[MMU_PAGE_SIZES]; /* page_get_mnode_freelist */ 479 ulong_t pgmf_allocfailed[MMU_PAGE_SIZES]; 480 ulong_t pgmf_allocempty[MMU_PAGE_SIZES]; 481 ulong_t pgmf_allocok[MMU_PAGE_SIZES]; 482 ulong_t pgmc_alloc; /* page_get_mnode_cachelist */ 483 ulong_t pgmc_allocfailed; 484 ulong_t pgmc_allocempty; 485 ulong_t pgmc_allocok; 486 ulong_t pladd_free[MMU_PAGE_SIZES]; /* page_list_add/sub */ 487 ulong_t plsub_free[MMU_PAGE_SIZES]; 488 ulong_t pladd_cache; 489 ulong_t plsub_cache; 490 ulong_t plsubpages_szcbig; 491 ulong_t plsubpages_szc0; 492 ulong_t pfs_req[MMU_PAGE_SIZES]; /* page_freelist_split */ 493 ulong_t pfs_demote[MMU_PAGE_SIZES]; 494 ulong_t pfc_coalok[MMU_PAGE_SIZES][MAX_MNODE_MRANGES]; 495 ulong_t ppr_reloc[MMU_PAGE_SIZES]; /* page_relocate */ 496 ulong_t ppr_relocnoroot[MMU_PAGE_SIZES]; 497 ulong_t ppr_reloc_replnoroot[MMU_PAGE_SIZES]; 498 ulong_t ppr_relocnolock[MMU_PAGE_SIZES]; 499 ulong_t ppr_relocnomem[MMU_PAGE_SIZES]; 500 ulong_t ppr_relocok[MMU_PAGE_SIZES]; 501 ulong_t ppr_copyfail; 502 /* page coalesce counter */ 503 ulong_t page_ctrs_coalesce[MMU_PAGE_SIZES][MAX_MNODE_MRANGES]; 504 /* candidates useful */ 505 ulong_t page_ctrs_cands_skip[MMU_PAGE_SIZES][MAX_MNODE_MRANGES]; 506 /* ctrs changed after locking */ 507 ulong_t page_ctrs_changed[MMU_PAGE_SIZES][MAX_MNODE_MRANGES]; 508 /* page_freelist_coalesce failed */ 509 ulong_t page_ctrs_failed[MMU_PAGE_SIZES][MAX_MNODE_MRANGES]; 510 ulong_t page_ctrs_coalesce_all; /* page coalesce all counter */ 511 ulong_t page_ctrs_cands_skip_all; /* candidates useful for all func */ 512 ulong_t restrict4gcnt; 513 ulong_t unrestrict16mcnt; /* non-DMA 16m allocs allowed */ 514 ulong_t pgpanicalloc; /* PG_PANIC allocation */ 515 ulong_t pcf_deny[MMU_PAGE_SIZES]; /* page_chk_freelist */ 516 ulong_t pcf_allow[MMU_PAGE_SIZES]; 517 }; 518 extern struct vmm_vmstats_str vmm_vmstats; 519 #endif /* VM_STATS */ 520 521 extern size_t page_ctrs_sz(void); 522 extern caddr_t page_ctrs_alloc(caddr_t); 523 extern void page_ctr_sub(int, int, page_t *, int); 524 extern page_t *page_freelist_split(uchar_t, 525 uint_t, int, int, pfn_t, page_list_walker_t *); 526 extern page_t *page_freelist_coalesce(int, uchar_t, uint_t, uint_t, int, 527 pfn_t); 528 extern uint_t page_get_pagecolors(uint_t); 529 extern void pfnzero(pfn_t, uint_t, uint_t); 530 531 #ifdef __cplusplus 532 } 533 #endif 534 535 #endif /* _VM_DEP_H */ 536