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, Version 1.0 only 6 * (the "License"). You may not use this file except in compliance 7 * with the License. 8 * 9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10 * or http://www.opensolaris.org/os/licensing. 11 * See the License for the specific language governing permissions 12 * and limitations under the License. 13 * 14 * When distributing Covered Code, include this CDDL HEADER in each 15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16 * If applicable, add the following below this CDDL HEADER, with the 17 * fields enclosed by brackets "[]" replaced with your own identifying 18 * information: Portions Copyright [yyyy] [name of copyright owner] 19 * 20 * CDDL HEADER END 21 */ 22 /* 23 * Copyright 2005 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 /* 28 * UNIX machine dependent virtual memory support. 29 */ 30 31 #ifndef _VM_DEP_H 32 #define _VM_DEP_H 33 34 #pragma ident "%Z%%M% %I% %E% SMI" 35 36 #ifdef __cplusplus 37 extern "C" { 38 #endif 39 40 #include <sys/clock.h> 41 #include <vm/hat_pte.h> 42 43 /* 44 * WARNING: vm_dep.h is included by files in common. As such, macros 45 * dependent upon PTE36 such as LARGEPAGESIZE cannot be used in this file. 46 */ 47 48 #define GETTICK() tsc_read() 49 50 /* memranges in descending order */ 51 extern pfn_t *memranges; 52 53 #define MEMRANGEHI(mtype) \ 54 ((mtype > 0) ? memranges[mtype - 1] - 1: physmax) 55 #define MEMRANGELO(mtype) (memranges[mtype]) 56 57 /* 58 * combined memory ranges from mnode and memranges[] to manage single 59 * mnode/mtype dimension in the page lists. 60 */ 61 typedef struct { 62 pfn_t mnr_pfnlo; 63 pfn_t mnr_pfnhi; 64 int mnr_mnode; 65 int mnr_memrange; /* index into memranges[] */ 66 /* maintain page list stats */ 67 pgcnt_t mnr_mt_pgmax; /* mnode/mtype max page cnt */ 68 pgcnt_t mnr_mt_clpgcnt; /* cache list cnt */ 69 pgcnt_t mnr_mt_flpgcnt; /* free list cnt - small pages */ 70 pgcnt_t mnr_mt_lgpgcnt; /* free list cnt - large pages */ 71 #ifdef DEBUG 72 struct mnr_mts { /* mnode/mtype szc stats */ 73 pgcnt_t mnr_mts_pgcnt; 74 int mnr_mts_colors; 75 pgcnt_t *mnr_mtsc_pgcnt; 76 } *mnr_mts; 77 #endif 78 } mnoderange_t; 79 80 #ifdef DEBUG 81 #define PLCNT_SZ(ctrs_sz) { \ 82 int szc, colors; \ 83 ctrs_sz += mnoderangecnt * sizeof (struct mnr_mts) * \ 84 mmu_page_sizes; \ 85 for (szc = 0; szc < mmu_page_sizes; szc++) { \ 86 colors = page_get_pagecolors(szc); \ 87 ctrs_sz += mnoderangecnt * sizeof (pgcnt_t) * colors; \ 88 } \ 89 } 90 91 #define PLCNT_INIT(addr) { \ 92 int mt, szc, colors; \ 93 for (mt = 0; mt < mnoderangecnt; mt++) { \ 94 mnoderanges[mt].mnr_mts = (struct mnr_mts *)addr; \ 95 addr += (sizeof (struct mnr_mts) * mmu_page_sizes); \ 96 for (szc = 0; szc < mmu_page_sizes; szc++) { \ 97 colors = page_get_pagecolors(szc); \ 98 mnoderanges[mt].mnr_mts[szc].mnr_mts_colors = \ 99 colors; \ 100 mnoderanges[mt].mnr_mts[szc].mnr_mtsc_pgcnt = \ 101 (pgcnt_t *)addr; \ 102 addr += (sizeof (pgcnt_t) * colors); \ 103 } \ 104 } \ 105 } 106 #define PLCNT_DO(pp, mtype, szc, cnt, flags) { \ 107 int bin = PP_2_BIN(pp); \ 108 if (flags & PG_LIST_ISINIT) \ 109 mnoderanges[mtype].mnr_mt_pgmax += cnt; \ 110 ASSERT((flags & PG_LIST_ISCAGE) == 0); \ 111 if (flags & PG_CACHE_LIST) \ 112 atomic_add_long(&mnoderanges[mtype]. \ 113 mnr_mt_clpgcnt, cnt); \ 114 else if (szc) \ 115 atomic_add_long(&mnoderanges[mtype]. \ 116 mnr_mt_lgpgcnt, cnt); \ 117 else \ 118 atomic_add_long(&mnoderanges[mtype]. \ 119 mnr_mt_flpgcnt, cnt); \ 120 atomic_add_long(&mnoderanges[mtype].mnr_mts[szc]. \ 121 mnr_mts_pgcnt, cnt); \ 122 atomic_add_long(&mnoderanges[mtype].mnr_mts[szc]. \ 123 mnr_mtsc_pgcnt[bin], cnt); \ 124 } 125 #else 126 #define PLCNT_SZ(ctrs_sz) 127 #define PLCNT_INIT(base) 128 #define PLCNT_DO(pp, mtype, szc, cnt, flags) { \ 129 if (flags & PG_LIST_ISINIT) \ 130 mnoderanges[mtype].mnr_mt_pgmax += cnt; \ 131 if (flags & PG_CACHE_LIST) \ 132 atomic_add_long(&mnoderanges[mtype]. \ 133 mnr_mt_clpgcnt, cnt); \ 134 else if (szc) \ 135 atomic_add_long(&mnoderanges[mtype]. \ 136 mnr_mt_lgpgcnt, cnt); \ 137 else \ 138 atomic_add_long(&mnoderanges[mtype]. \ 139 mnr_mt_flpgcnt, cnt); \ 140 } 141 #endif 142 143 #define PLCNT_INCR(pp, mnode, mtype, szc, flags) { \ 144 long cnt = (1 << PAGE_BSZS_SHIFT(szc)); \ 145 ASSERT(mtype == PP_2_MTYPE(pp)); \ 146 if (physmax4g && mtype <= mtype4g) \ 147 atomic_add_long(&freemem4g, cnt); \ 148 if (flags & PG_LIST_ISINIT) { \ 149 if (physmax4g && mtype <= mtype4g) \ 150 maxmem4g += cnt; \ 151 } \ 152 PLCNT_DO(pp, mtype, szc, cnt, flags); \ 153 } 154 155 #define PLCNT_DECR(pp, mnode, mtype, szc, flags) { \ 156 long cnt = ((-1) << PAGE_BSZS_SHIFT(szc)); \ 157 ASSERT(mtype == PP_2_MTYPE(pp)); \ 158 if (physmax4g && mtype <= mtype4g) \ 159 atomic_add_long(&freemem4g, cnt); \ 160 PLCNT_DO(pp, mtype, szc, cnt, flags); \ 161 } 162 163 /* 164 * macros to update page list max counts. no-op on x86. 165 */ 166 #define PLCNT_MAX_INCR(pp, mnode, mtype, szc) 167 #define PLCNT_MAX_DECR(pp, mnode, mtype, szc) 168 169 extern mnoderange_t *mnoderanges; 170 extern int mnoderangecnt; 171 extern int mtype4g; 172 173 /* 174 * 4g memory management variables for systems with more than 4g of memory: 175 * 176 * physical memory below 4g is required for 32bit dma devices and, currently, 177 * for kmem memory. On systems with more than 4g of memory, the pool of memory 178 * below 4g can be depleted without any paging activity given that there is 179 * likely to be sufficient memory above 4g. 180 * 181 * physmax4g is set true if the largest pfn is over 4g. The rest of the 182 * 4g memory management code is enabled only when physmax4g is true. 183 * 184 * maxmem4g is the count of the maximum number of pages on the page lists 185 * with physical addresses below 4g. It can be a lot less then 4g given that 186 * BIOS may reserve large chunks of space below 4g for hot plug pci devices, 187 * agp aperture etc. 188 * 189 * freemem4g maintains the count of the number of available pages on the 190 * page lists with physical addresses below 4g. 191 * 192 * DESFREE4G specifies the desired amount of below 4g memory. It defaults to 193 * 6% (desfree4gshift = 4) of maxmem4g. 194 * 195 * RESTRICT4G_ALLOC returns true if freemem4g falls below DESFREE4G 196 * and the amount of physical memory above 4g is greater than freemem4g. 197 * In this case, page_get_* routines will restrict below 4g allocations 198 * for requests that don't specifically require it. 199 */ 200 201 extern int physmax4g; 202 extern pgcnt_t maxmem4g; 203 extern pgcnt_t freemem4g; 204 extern int lotsfree4gshift; 205 extern int desfree4gshift; 206 #define LOTSFREE4G (maxmem4g >> lotsfree4gshift) 207 #define DESFREE4G (maxmem4g >> desfree4gshift) 208 209 #define RESTRICT4G_ALLOC \ 210 (physmax4g && (freemem4g < DESFREE4G) && ((freemem4g << 1) < freemem)) 211 212 extern int restricted_kmemalloc; 213 extern int memrange_num(pfn_t); 214 extern int pfn_2_mtype(pfn_t); 215 extern int mtype_func(int, int, uint_t); 216 extern int mnode_pgcnt(int); 217 218 #define NUM_MEM_RANGES 4 /* memory range types */ 219 220 /* 221 * Per page size free lists. Allocated dynamically. 222 * dimensions [mtype][mmu_page_sizes][colors] 223 * 224 * mtype specifies a physical memory range with a unique mnode. 225 */ 226 227 extern page_t ****page_freelists; 228 229 #define PAGE_FREELISTS(mnode, szc, color, mtype) \ 230 (*(page_freelists[mtype][szc] + (color))) 231 232 /* 233 * For now there is only a single size cache list. Allocated dynamically. 234 * dimensions [mtype][colors] 235 * 236 * mtype specifies a physical memory range with a unique mnode. 237 */ 238 extern page_t ***page_cachelists; 239 240 #define PAGE_CACHELISTS(mnode, color, mtype) \ 241 (*(page_cachelists[mtype] + (color))) 242 243 /* 244 * There are mutexes for both the page freelist 245 * and the page cachelist. We want enough locks to make contention 246 * reasonable, but not too many -- otherwise page_freelist_lock() gets 247 * so expensive that it becomes the bottleneck! 248 */ 249 250 #define NPC_MUTEX 16 251 252 extern kmutex_t *fpc_mutex[NPC_MUTEX]; 253 extern kmutex_t *cpc_mutex[NPC_MUTEX]; 254 255 extern page_t *page_get_mnode_freelist(int, uint_t, int, uchar_t, uint_t); 256 extern page_t *page_get_mnode_cachelist(uint_t, uint_t, int, int); 257 258 /* Find the bin for the given page if it was of size szc */ 259 #define PP_2_BIN_SZC(pp, szc) \ 260 (((pp->p_pagenum) & page_colors_mask) >> \ 261 (hw_page_array[szc].hp_shift - hw_page_array[0].hp_shift)) 262 263 #define PP_2_BIN(pp) (PP_2_BIN_SZC(pp, pp->p_szc)) 264 265 #define PP_2_MEM_NODE(pp) (PFN_2_MEM_NODE(pp->p_pagenum)) 266 #define PP_2_MTYPE(pp) (pfn_2_mtype(pp->p_pagenum)) 267 #define PP_2_SZC(pp) (pp->p_szc) 268 269 #define SZCPAGES(szc) (1 << PAGE_BSZS_SHIFT(szc)) 270 #define PFN_BASE(pfnum, szc) (pfnum & ~(SZCPAGES(szc) - 1)) 271 272 extern struct cpu cpus[]; 273 #define CPU0 cpus 274 275 #if defined(__amd64) 276 277 /* 278 * set the mtype range (called from page_get_{free,cache}list) 279 * - set range to above 4g if the system has more than 4g of memory and the 280 * amount of memory below 4g runs low otherwise set range to all of memory 281 * starting from the hi pfns. 282 * 283 * page_get_anylist gets its mtype range from the specified ddi_dma_attr_t. 284 */ 285 #define MTYPE_INIT(mtype, vp, vaddr, flags) { \ 286 mtype = mnoderangecnt - 1; \ 287 if (RESTRICT4G_ALLOC) { \ 288 VM_STAT_ADD(vmm_vmstats.restrict4gcnt); \ 289 /* here only for > 4g systems */ \ 290 flags |= PGI_MT_RANGE4G; \ 291 } else { \ 292 flags |= PGI_MT_RANGE0; \ 293 } \ 294 } 295 296 #elif defined(__i386) 297 298 /* 299 * set the mtype range 300 * - kmem requests needs to be below 4g if restricted_kmemalloc is set. 301 * - for non kmem requests, set range to above 4g if the amount of memory 302 * below 4g runs low. 303 */ 304 305 #define MTYPE_INIT(mtype, vp, vaddr, flags) { \ 306 if (restricted_kmemalloc && (vp) == &kvp && \ 307 (caddr_t)(vaddr) >= kernelheap && \ 308 (caddr_t)(vaddr) < ekernelheap) { \ 309 ASSERT(physmax4g); \ 310 mtype = mtype4g; \ 311 flags |= PGI_MT_RANGE0; \ 312 } else { \ 313 mtype = mnoderangecnt - 1; \ 314 if (RESTRICT4G_ALLOC) { \ 315 VM_STAT_ADD(vmm_vmstats.restrict4gcnt); \ 316 /* here only for > 4g systems */ \ 317 flags |= PGI_MT_RANGE4G; \ 318 } else { \ 319 flags |= PGI_MT_RANGE0; \ 320 } \ 321 } \ 322 } 323 324 #endif /* __i386 */ 325 326 /* 327 * macros to loop through the mtype range (page_get_mnode_{free,cache,any}list, 328 * and page_get_contig_pages) 329 * 330 * MTYPE_START sets the initial mtype. -1 if the mtype range specified does 331 * not contain mnode. 332 * 333 * MTYPE_NEXT sets the next mtype. -1 if there are no more valid 334 * mtype in the range. 335 */ 336 337 #define MTYPE_START(mnode, mtype, flags) \ 338 (mtype = mtype_func(mnode, mtype, flags)) 339 340 #define MTYPE_NEXT(mnode, mtype, flags) { \ 341 if (flags & PGI_MT_RANGE) { \ 342 mtype = mtype_func(mnode, mtype, flags | PGI_MT_NEXT); \ 343 } else { \ 344 mtype = -1; \ 345 } \ 346 } 347 348 /* mtype init for page_get_replacement_page */ 349 350 #define MTYPE_PGR_INIT(mtype, flags, pp, mnode) { \ 351 mtype = mnoderangecnt - 1; \ 352 flags |= PGI_MT_RANGE0; \ 353 } 354 355 #define MNODE_PGCNT(mnode) mnode_pgcnt(mnode) 356 357 #define MNODETYPE_2_PFN(mnode, mtype, pfnlo, pfnhi) \ 358 ASSERT(mnoderanges[mtype].mnr_mnode == mnode); \ 359 pfnlo = mnoderanges[mtype].mnr_pfnlo; \ 360 pfnhi = mnoderanges[mtype].mnr_pfnhi; 361 362 #define PC_BIN_MUTEX(mnode, bin, flags) ((flags & PG_FREE_LIST) ? \ 363 &fpc_mutex[(bin) & (NPC_MUTEX - 1)][mnode] : \ 364 &cpc_mutex[(bin) & (NPC_MUTEX - 1)][mnode]) 365 366 #define FPC_MUTEX(mnode, i) (&fpc_mutex[i][mnode]) 367 #define CPC_MUTEX(mnode, i) (&cpc_mutex[i][mnode]) 368 369 #ifdef DEBUG 370 #define CHK_LPG(pp, szc) chk_lpg(pp, szc) 371 extern void chk_lpg(page_t *, uchar_t); 372 #else 373 #define CHK_LPG(pp, szc) 374 #endif 375 376 #define FULL_REGION_CNT(rg_szc) \ 377 (LEVEL_SIZE(rg_szc) >> LEVEL_SHIFT(rg_szc - 1)) 378 379 /* Return the leader for this mapping size */ 380 #define PP_GROUPLEADER(pp, szc) \ 381 (&(pp)[-(int)((pp)->p_pagenum & (SZCPAGES(szc)-1))]) 382 383 /* Return the root page for this page based on p_szc */ 384 #define PP_PAGEROOT(pp) ((pp)->p_szc == 0 ? (pp) : \ 385 PP_GROUPLEADER((pp), (pp)->p_szc)) 386 387 /* 388 * The counter base must be per page_counter element to prevent 389 * races when re-indexing, and the base page size element should 390 * be aligned on a boundary of the given region size. 391 * 392 * We also round up the number of pages spanned by the counters 393 * for a given region to PC_BASE_ALIGN in certain situations to simplify 394 * the coding for some non-performance critical routines. 395 */ 396 397 #define PC_BASE_ALIGN ((pfn_t)1 << PAGE_BSZS_SHIFT(MMU_PAGE_SIZES-1)) 398 #define PC_BASE_ALIGN_MASK (PC_BASE_ALIGN - 1) 399 400 /* 401 * cpu/mmu-dependent vm variables 402 */ 403 extern uint_t mmu_page_sizes; 404 extern uint_t mmu_exported_page_sizes; 405 406 /* For x86, userszc is the same as the kernel's szc */ 407 #define USERSZC_2_SZC(userszc) (userszc) 408 #define SZC_2_USERSZC(szc) (szc) 409 410 /* 411 * for hw_page_map_t, sized to hold the ratio of large page to base 412 * pagesize (1024 max) 413 */ 414 typedef short hpmctr_t; 415 416 /* 417 * get the setsize of the current cpu - assume homogenous for x86 418 */ 419 extern int l2cache_sz, l2cache_linesz, l2cache_assoc; 420 421 #define L2CACHE_ALIGN l2cache_linesz 422 #define L2CACHE_ALIGN_MAX 64 423 #define CPUSETSIZE() \ 424 (l2cache_assoc ? (l2cache_sz / l2cache_assoc) : MMU_PAGESIZE) 425 426 /* 427 * Return the log2(pagesize(szc) / MMU_PAGESIZE) --- or the shift count 428 * for the number of base pages in this pagesize 429 */ 430 #define PAGE_BSZS_SHIFT(szc) (LEVEL_SHIFT(szc) - MMU_PAGESHIFT) 431 432 /* 433 * Internal PG_ flags. 434 */ 435 #define PGI_RELOCONLY 0x010000 /* opposite of PG_NORELOC */ 436 #define PGI_NOCAGE 0x020000 /* cage is disabled */ 437 #define PGI_PGCPHIPRI 0x040000 /* page_get_contig_page pri alloc */ 438 #define PGI_PGCPSZC0 0x080000 /* relocate base pagesize page */ 439 440 /* 441 * PGI range flags - should not overlap PGI flags 442 */ 443 #define PGI_MT_RANGE0 0x1000000 /* mtype range to 0 */ 444 #define PGI_MT_RANGE4G 0x2000000 /* mtype range to 4g */ 445 #define PGI_MT_NEXT 0x4000000 /* get next mtype */ 446 #define PGI_MT_RANGE (PGI_MT_RANGE0 | PGI_MT_RANGE4G) 447 448 /* 449 * hash as and addr to get a bin. 450 */ 451 452 #define AS_2_BIN(as, seg, vp, addr, bin) \ 453 bin = ((((uintptr_t)(addr) >> PAGESHIFT) + ((uintptr_t)(as) >> 4)) \ 454 & page_colors_mask) 455 456 /* 457 * cpu private vm data - accessed thru CPU->cpu_vm_data 458 * vc_pnum_memseg: tracks last memseg visited in page_numtopp_nolock() 459 * vc_pnext_memseg: tracks last memseg visited in page_nextn() 460 * vc_kmptr: orignal unaligned kmem pointer for this vm_cpu_data_t 461 */ 462 463 typedef struct { 464 struct memseg *vc_pnum_memseg; 465 struct memseg *vc_pnext_memseg; 466 void *vc_kmptr; 467 } vm_cpu_data_t; 468 469 /* allocation size to ensure vm_cpu_data_t resides in its own cache line */ 470 #define VM_CPU_DATA_PADSIZE \ 471 (P2ROUNDUP(sizeof (vm_cpu_data_t), L2CACHE_ALIGN_MAX)) 472 473 /* for boot cpu before kmem is initialized */ 474 extern char vm_cpu_data0[]; 475 476 /* 477 * When a bin is empty, and we can't satisfy a color request correctly, 478 * we scan. If we assume that the programs have reasonable spatial 479 * behavior, then it will not be a good idea to use the adjacent color. 480 * Using the adjacent color would result in virtually adjacent addresses 481 * mapping into the same spot in the cache. So, if we stumble across 482 * an empty bin, skip a bunch before looking. After the first skip, 483 * then just look one bin at a time so we don't miss our cache on 484 * every look. Be sure to check every bin. Page_create() will panic 485 * if we miss a page. 486 * 487 * This also explains the `<=' in the for loops in both page_get_freelist() 488 * and page_get_cachelist(). Since we checked the target bin, skipped 489 * a bunch, then continued one a time, we wind up checking the target bin 490 * twice to make sure we get all of them bins. 491 */ 492 #define BIN_STEP 19 493 494 #ifdef VM_STATS 495 struct vmm_vmstats_str { 496 ulong_t pgf_alloc[MMU_PAGE_SIZES]; /* page_get_freelist */ 497 ulong_t pgf_allocok[MMU_PAGE_SIZES]; 498 ulong_t pgf_allocokrem[MMU_PAGE_SIZES]; 499 ulong_t pgf_allocfailed[MMU_PAGE_SIZES]; 500 ulong_t pgf_allocdeferred; 501 ulong_t pgf_allocretry[MMU_PAGE_SIZES]; 502 ulong_t pgc_alloc; /* page_get_cachelist */ 503 ulong_t pgc_allocok; 504 ulong_t pgc_allocokrem; 505 ulong_t pgc_allocokdeferred; 506 ulong_t pgc_allocfailed; 507 ulong_t pgcp_alloc[MMU_PAGE_SIZES]; /* page_get_contig_pages */ 508 ulong_t pgcp_allocfailed[MMU_PAGE_SIZES]; 509 ulong_t pgcp_allocempty[MMU_PAGE_SIZES]; 510 ulong_t pgcp_allocok[MMU_PAGE_SIZES]; 511 ulong_t ptcp[MMU_PAGE_SIZES]; /* page_trylock_contig_pages */ 512 ulong_t ptcpfreethresh[MMU_PAGE_SIZES]; 513 ulong_t ptcpfailexcl[MMU_PAGE_SIZES]; 514 ulong_t ptcpfailszc[MMU_PAGE_SIZES]; 515 ulong_t ptcpfailcage[MMU_PAGE_SIZES]; 516 ulong_t ptcpok[MMU_PAGE_SIZES]; 517 ulong_t pgmf_alloc[MMU_PAGE_SIZES]; /* page_get_mnode_freelist */ 518 ulong_t pgmf_allocfailed[MMU_PAGE_SIZES]; 519 ulong_t pgmf_allocempty[MMU_PAGE_SIZES]; 520 ulong_t pgmf_allocok[MMU_PAGE_SIZES]; 521 ulong_t pgmc_alloc; /* page_get_mnode_cachelist */ 522 ulong_t pgmc_allocfailed; 523 ulong_t pgmc_allocempty; 524 ulong_t pgmc_allocok; 525 ulong_t pladd_free[MMU_PAGE_SIZES]; /* page_list_add/sub */ 526 ulong_t plsub_free[MMU_PAGE_SIZES]; 527 ulong_t pladd_cache; 528 ulong_t plsub_cache; 529 ulong_t plsubpages_szcbig; 530 ulong_t plsubpages_szc0; 531 ulong_t pff_req[MMU_PAGE_SIZES]; /* page_freelist_fill */ 532 ulong_t pff_demote[MMU_PAGE_SIZES]; 533 ulong_t pff_coalok[MMU_PAGE_SIZES]; 534 ulong_t ppr_reloc[MMU_PAGE_SIZES]; /* page_relocate */ 535 ulong_t ppr_relocnoroot[MMU_PAGE_SIZES]; 536 ulong_t ppr_reloc_replnoroot[MMU_PAGE_SIZES]; 537 ulong_t ppr_relocnolock[MMU_PAGE_SIZES]; 538 ulong_t ppr_relocnomem[MMU_PAGE_SIZES]; 539 ulong_t ppr_relocok[MMU_PAGE_SIZES]; 540 ulong_t page_ctrs_coalesce; /* page coalesce counter */ 541 ulong_t page_ctrs_cands_skip; /* candidates useful */ 542 ulong_t page_ctrs_changed; /* ctrs changed after locking */ 543 ulong_t page_ctrs_failed; /* page_freelist_coalesce failed */ 544 ulong_t page_ctrs_coalesce_all; /* page coalesce all counter */ 545 ulong_t page_ctrs_cands_skip_all; /* candidates useful for all func */ 546 ulong_t restrict4gcnt; 547 }; 548 extern struct vmm_vmstats_str vmm_vmstats; 549 #endif /* VM_STATS */ 550 551 extern size_t page_ctrs_sz(void); 552 extern caddr_t page_ctrs_alloc(caddr_t); 553 extern void page_ctr_sub(int, int, page_t *, int); 554 extern page_t *page_freelist_fill(uchar_t, int, int, int, pfn_t); 555 extern uint_t page_get_pagecolors(uint_t); 556 557 #ifdef __cplusplus 558 } 559 #endif 560 561 #endif /* _VM_DEP_H */ 562