usr/src/uts/i86pc/vm/vm_dep.h

   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 (c) 2004, 2010, Oracle and/or its affiliates. All rights reserved.
  23  */
  24 /*
  25  * Copyright (c) 2010, Intel Corporation.
  26  * All rights reserved.
  27  */
  28
  29 /*
  30  * UNIX machine dependent virtual memory support.
  31  */
  32
  33 #ifndef _VM_DEP_H
  34 #define _VM_DEP_H
  35
  36
  37 #ifdef  __cplusplus
  38 extern "C" {
  39 #endif
  40
  41 #include <sys/clock.h>
  42 #include <vm/hat_pte.h>
  43 #include <sys/param.h>
  44 #include <sys/memnode.h>
  45
  46 /*
  47  * WARNING: vm_dep.h is included by files in common.
  48  */
  49
  50 #define GETTICK()       tsc_read()
  51 /*
  52  * Do not use this function for obtaining clock tick.  This
  53  * is called by callers who do not need to have a guarenteed
  54  * correct tick value.  The proper routine to use is tsc_read().
  55  */
  56
  57 extern u_longlong_t     randtick();
  58 extern uint_t page_create_update_flags_x86(uint_t);
  59
  60 extern size_t plcnt_sz(size_t);
  61 #define PLCNT_SZ(ctrs_sz) (ctrs_sz = plcnt_sz(ctrs_sz))
  62
  63 extern caddr_t plcnt_init(caddr_t);
  64 #define PLCNT_INIT(addr) (addr = plcnt_init(addr))
  65
  66 extern void plcnt_inc_dec(page_t *, int, int, long, int);
  67 #define PLCNT_INCR(pp, mnode, mtype, szc, flags)                        \
  68         plcnt_inc_dec(pp, mtype, szc, 1l << PAGE_BSZS_SHIFT(szc), flags)
  69 #define PLCNT_DECR(pp, mnode, mtype, szc, flags)                        \
  70         plcnt_inc_dec(pp, mtype, szc, \
  71         (long)(ULONG_MAX << PAGE_BSZS_SHIFT(szc)), flags)
  72
  73 /*
  74  * macro to update page list max counts.  no-op on x86.
  75  */
  76 #define PLCNT_XFER_NORELOC(pp)
  77
  78 /*
  79  * macro to modify the page list max counts when memory is added to
  80  * the page lists during startup (add_physmem) or during a DR operation
  81  * when memory is added (kphysm_add_memory_dynamic) or deleted
  82  * (kphysm_del_cleanup).
  83  */
  84 #define PLCNT_MODIFY_MAX(pfn, cnt)      mtype_modify_max(pfn, cnt)
  85
  86 extern int memrange_num(pfn_t);
  87 extern int pfn_2_mtype(pfn_t);
  88 extern int mtype_func(int, int, uint_t);
  89 extern void mtype_modify_max(pfn_t, long);
  90 extern int mnode_pgcnt(int);
  91 extern int mnode_range_cnt(int);
  92
  93 /*
  94  * candidate counters in vm_pagelist.c are indexed by color and range
  95  */
  96 #define NUM_MEM_RANGES          4               /* memory range types */
  97 #define MAX_MNODE_MRANGES       NUM_MEM_RANGES
  98 #define MNODE_RANGE_CNT(mnode)  mnode_range_cnt(mnode)
  99 #define MNODE_MAX_MRANGE(mnode) memrange_num(mem_node_config[mnode].physbase)
 100
 101 /*
 102  * This was really badly defined, it implicitly uses mnode_maxmrange[]
 103  * which is a static in vm_pagelist.c
 104  */
 105 extern int mtype_2_mrange(int);
 106 #define MTYPE_2_MRANGE(mnode, mtype)    \
 107         (mnode_maxmrange[mnode] - mtype_2_mrange(mtype))
 108
 109 /*
 110  * Per page size free lists. Allocated dynamically.
 111  * dimensions [mtype][mmu_page_sizes][colors]
 112  *
 113  * mtype specifies a physical memory range with a unique mnode.
 114  */
 115
 116 extern page_t ****page_freelists;
 117
 118 #define PAGE_FREELISTS(mnode, szc, color, mtype)                \
 119         (*(page_freelists[mtype][szc] + (color)))
 120
 121 /*
 122  * For now there is only a single size cache list. Allocated dynamically.
 123  * dimensions [mtype][colors]
 124  *
 125  * mtype specifies a physical memory range with a unique mnode.
 126  */
 127 extern page_t ***page_cachelists;
 128
 129 #define PAGE_CACHELISTS(mnode, color, mtype)            \
 130         (*(page_cachelists[mtype] + (color)))
 131
 132 /*
 133  * There are mutexes for both the page freelist
 134  * and the page cachelist.  We want enough locks to make contention
 135  * reasonable, but not too many -- otherwise page_freelist_lock() gets
 136  * so expensive that it becomes the bottleneck!
 137  */
 138
 139 #define NPC_MUTEX       16
 140
 141 extern kmutex_t *fpc_mutex[NPC_MUTEX];
 142 extern kmutex_t *cpc_mutex[NPC_MUTEX];
 143
 144 extern page_t *page_get_mnode_freelist(int, uint_t, int, uchar_t, uint_t);
 145 extern page_t *page_get_mnode_cachelist(uint_t, uint_t, int, int);
 146
 147 /* mem node iterator is not used on x86 */
 148 #define MEM_NODE_ITERATOR_DECL(it)
 149 #define MEM_NODE_ITERATOR_INIT(pfn, mnode, szc, it)
 150
 151 /*
 152  * interleaved_mnodes mode is never set on x86, therefore,
 153  * simply return the limits of the given mnode, which then
 154  * determines the length of hpm_counters array for the mnode.
 155  */
 156 #define HPM_COUNTERS_LIMITS(mnode, physbase, physmax, first)    \
 157         {                                                       \
 158                 (physbase) = mem_node_config[(mnode)].physbase; \
 159                 (physmax) = mem_node_config[(mnode)].physmax;   \
 160                 (first) = (mnode);                              \
 161         }
 162
 163 #define PAGE_CTRS_WRITE_LOCK(mnode)                             \
 164         {                                                       \
 165                 rw_enter(&page_ctrs_rwlock[(mnode)], RW_WRITER);\
 166                 page_freelist_lock(mnode);                      \
 167         }
 168
 169 #define PAGE_CTRS_WRITE_UNLOCK(mnode)                           \
 170         {                                                       \
 171                 page_freelist_unlock(mnode);                    \
 172                 rw_exit(&page_ctrs_rwlock[(mnode)]);            \
 173         }
 174
 175 /*
 176  * macro to call page_ctrs_adjust() when memory is added
 177  * during a DR operation.
 178  */
 179 #define PAGE_CTRS_ADJUST(pfn, cnt, rv) {                                       \
 180         spgcnt_t _cnt = (spgcnt_t)(cnt);                                       \
 181         int _mn;                                                               \
 182         pgcnt_t _np;                                                           \
 183         pfn_t _pfn = (pfn);                                                    \
 184         pfn_t _endpfn = _pfn + _cnt;                                           \
 185         while (_pfn < _endpfn) {                                               \
 186                 _mn = PFN_2_MEM_NODE(_pfn);                                    \
 187                 _np = MIN(_endpfn, mem_node_config[_mn].physmax + 1) - _pfn;   \
 188                 _pfn += _np;                                                   \
 189                 if ((rv = page_ctrs_adjust(_mn)) != 0)                         \
 190                         break;                                                 \
 191         }                                                                      \
 192 }
 193
 194 #define PAGE_GET_COLOR_SHIFT(szc, nszc)                         \
 195             (hw_page_array[(nszc)].hp_shift - hw_page_array[(szc)].hp_shift)
 196
 197 #define PAGE_CONVERT_COLOR(ncolor, szc, nszc)                   \
 198             ((ncolor) << PAGE_GET_COLOR_SHIFT((szc), (nszc)))
 199
 200 #define PFN_2_COLOR(pfn, szc, it)                                       \
 201         (((pfn) & page_colors_mask) >>                                  \
 202         (hw_page_array[szc].hp_shift - hw_page_array[0].hp_shift))
 203
 204 #define PNUM_SIZE(szc)                                                  \
 205         (hw_page_array[(szc)].hp_pgcnt)
 206 #define PNUM_SHIFT(szc)                                                 \
 207         (hw_page_array[(szc)].hp_shift - hw_page_array[0].hp_shift)
 208 #define PAGE_GET_SHIFT(szc)                                             \
 209         (hw_page_array[(szc)].hp_shift)
 210 #define PAGE_GET_PAGECOLORS(szc)                                        \
 211         (hw_page_array[(szc)].hp_colors)
 212
 213 /*
 214  * This macro calculates the next sequential pfn with the specified
 215  * color using color equivalency mask
 216  */
 217 #define PAGE_NEXT_PFN_FOR_COLOR(pfn, szc, color, ceq_mask, color_mask, it)    \
 218         {                                                                     \
 219                 uint_t  pfn_shift = PAGE_BSZS_SHIFT(szc);                     \
 220                 pfn_t   spfn = pfn >> pfn_shift;                              \
 221                 pfn_t   stride = (ceq_mask) + 1;                              \
 222                 ASSERT(((color) & ~(ceq_mask)) == 0);                         \
 223                 ASSERT((((ceq_mask) + 1) & (ceq_mask)) == 0);                 \
 224                 if (((spfn ^ (color)) & (ceq_mask)) == 0) {                   \
 225                         pfn += stride << pfn_shift;                           \
 226                 } else {                                                      \
 227                         pfn = (spfn & ~(pfn_t)(ceq_mask)) | (color);          \
 228                         pfn = (pfn > spfn ? pfn : pfn + stride) << pfn_shift; \
 229                 }                                                             \
 230         }
 231
 232 /* get the color equivalency mask for the next szc */
 233 #define PAGE_GET_NSZ_MASK(szc, mask)                                         \
 234         ((mask) >> (PAGE_GET_SHIFT((szc) + 1) - PAGE_GET_SHIFT(szc)))
 235
 236 /* get the color of the next szc */
 237 #define PAGE_GET_NSZ_COLOR(szc, color)                                       \
 238         ((color) >> (PAGE_GET_SHIFT((szc) + 1) - PAGE_GET_SHIFT(szc)))
 239
 240 /* Find the bin for the given page if it was of size szc */
 241 #define PP_2_BIN_SZC(pp, szc)   (PFN_2_COLOR(pp->p_pagenum, szc, NULL))
 242
 243 #define PP_2_BIN(pp)            (PP_2_BIN_SZC(pp, pp->p_szc))
 244
 245 #define PP_2_MEM_NODE(pp)       (PFN_2_MEM_NODE(pp->p_pagenum))
 246 #define PP_2_MTYPE(pp)          (pfn_2_mtype(pp->p_pagenum))
 247 #define PP_2_SZC(pp)            (pp->p_szc)
 248
 249 #define SZCPAGES(szc)           (1 << PAGE_BSZS_SHIFT(szc))
 250 #define PFN_BASE(pfnum, szc)    (pfnum & ~(SZCPAGES(szc) - 1))
 251
 252 /*
 253  * this structure is used for walking free page lists
 254  * controls when to split large pages into smaller pages,
 255  * and when to coalesce smaller pages into larger pages
 256  */
 257 typedef struct page_list_walker {
 258         uint_t  plw_colors;             /* num of colors for szc */
 259         uint_t  plw_color_mask;         /* colors-1 */
 260         uint_t  plw_bin_step;           /* next bin: 1 or 2 */
 261         uint_t  plw_count;              /* loop count */
 262         uint_t  plw_bin0;               /* starting bin */
 263         uint_t  plw_bin_marker;         /* bin after initial jump */
 264         uint_t  plw_bin_split_prev;     /* last bin we tried to split */
 265         uint_t  plw_do_split;           /* set if OK to split */
 266         uint_t  plw_split_next;         /* next bin to split */
 267         uint_t  plw_ceq_dif;            /* number of different color groups */
 268                                         /* to check */
 269         uint_t  plw_ceq_mask[MMU_PAGE_SIZES + 1]; /* color equiv mask */
 270         uint_t  plw_bins[MMU_PAGE_SIZES + 1];   /* num of bins */
 271 } page_list_walker_t;
 272
 273 void    page_list_walk_init(uchar_t szc, uint_t flags, uint_t bin,
 274     int can_split, int use_ceq, page_list_walker_t *plw);
 275
 276 uint_t  page_list_walk_next_bin(uchar_t szc, uint_t bin,
 277     page_list_walker_t *plw);
 278
 279 extern struct cpu       cpus[];
 280 #define CPU0            cpus
 281
 282 extern int mtype_init(vnode_t *, caddr_t, uint_t *, size_t);
 283 #define MTYPE_INIT(mtype, vp, vaddr, flags, pgsz)               \
 284         (mtype = mtype_init(vp, vaddr, &(flags), pgsz))
 285
 286 /*
 287  * macros to loop through the mtype range (page_get_mnode_{free,cache,any}list,
 288  * and page_get_contig_pages)
 289  *
 290  * MTYPE_START sets the initial mtype. -1 if the mtype range specified does
 291  * not contain mnode.
 292  *
 293  * MTYPE_NEXT sets the next mtype. -1 if there are no more valid
 294  * mtype in the range.
 295  */
 296
 297 #define MTYPE_START(mnode, mtype, flags)                                \
 298         (mtype = mtype_func(mnode, mtype, flags))
 299
 300 #define MTYPE_NEXT(mnode, mtype, flags) {                               \
 301         if (flags & PGI_MT_RANGE) {                                     \
 302                 mtype = mtype_func(mnode, mtype, flags | PGI_MT_NEXT);  \
 303         } else {                                                        \
 304                 mtype = -1;                                             \
 305         }                                                               \
 306 }
 307
 308 extern int mtype_pgr_init(int *, page_t *, int, pgcnt_t);
 309 #define MTYPE_PGR_INIT(mtype, flags, pp, mnode, pgcnt)                  \
 310         (mtype = mtype_pgr_init(&flags, pp, mnode, pgcnt))
 311
 312 #define MNODE_PGCNT(mnode)              mnode_pgcnt(mnode)
 313
 314 extern void mnodetype_2_pfn(int, int, pfn_t *, pfn_t *);
 315 #define MNODETYPE_2_PFN(mnode, mtype, pfnlo, pfnhi)                     \
 316         mnodetype_2_pfn(mnode, mtype, &pfnlo, &pfnhi)
 317
 318 #define PC_BIN_MUTEX(mnode, bin, flags) ((flags & PG_FREE_LIST) ?       \
 319         &fpc_mutex[(bin) & (NPC_MUTEX - 1)][mnode] :                    \
 320         &cpc_mutex[(bin) & (NPC_MUTEX - 1)][mnode])
 321
 322 #define FPC_MUTEX(mnode, i)     (&fpc_mutex[i][mnode])
 323 #define CPC_MUTEX(mnode, i)     (&cpc_mutex[i][mnode])
 324
 325 #ifdef DEBUG
 326 #define CHK_LPG(pp, szc)        chk_lpg(pp, szc)
 327 extern void     chk_lpg(page_t *, uchar_t);
 328 #else
 329 #define CHK_LPG(pp, szc)
 330 #endif
 331
 332 #define FULL_REGION_CNT(rg_szc) \
 333         (LEVEL_SIZE(rg_szc) >> LEVEL_SHIFT(rg_szc - 1))
 334
 335 /* Return the leader for this mapping size */
 336 #define PP_GROUPLEADER(pp, szc) \
 337         (&(pp)[-(int)((pp)->p_pagenum & (SZCPAGES(szc)-1))])
 338
 339 /* Return the root page for this page based on p_szc */
 340 #define PP_PAGEROOT(pp) ((pp)->p_szc == 0 ? (pp) : \
 341         PP_GROUPLEADER((pp), (pp)->p_szc))
 342
 343 /*
 344  * The counter base must be per page_counter element to prevent
 345  * races when re-indexing, and the base page size element should
 346  * be aligned on a boundary of the given region size.
 347  *
 348  * We also round up the number of pages spanned by the counters
 349  * for a given region to PC_BASE_ALIGN in certain situations to simplify
 350  * the coding for some non-performance critical routines.
 351  */
 352
 353 #define PC_BASE_ALIGN           ((pfn_t)1 << PAGE_BSZS_SHIFT(MMU_PAGE_SIZES-1))
 354 #define PC_BASE_ALIGN_MASK      (PC_BASE_ALIGN - 1)
 355
 356 /*
 357  * cpu/mmu-dependent vm variables
 358  */
 359 extern uint_t mmu_page_sizes;
 360 extern uint_t mmu_exported_page_sizes;
 361 /*
 362  * page sizes that legacy applications can see via getpagesizes(3c).
 363  * Used to prevent legacy applications from inadvertantly using the
 364  * 'new' large pagesizes (1g and above).
 365  */
 366 extern uint_t mmu_legacy_page_sizes;
 367
 368 /* For x86, userszc is the same as the kernel's szc */
 369 #define USERSZC_2_SZC(userszc)  (userszc)
 370 #define SZC_2_USERSZC(szc)      (szc)
 371
 372 /*
 373  * for hw_page_map_t, sized to hold the ratio of large page to base
 374  * pagesize (1024 max)
 375  */
 376 typedef short   hpmctr_t;
 377
 378 /*
 379  * get the setsize of the current cpu - assume homogenous for x86
 380  */
 381 extern int      l2cache_sz, l2cache_linesz, l2cache_assoc;
 382
 383 #define L2CACHE_ALIGN           l2cache_linesz
 384 #define L2CACHE_ALIGN_MAX       64
 385 #define CPUSETSIZE()            \
 386         (l2cache_assoc ? (l2cache_sz / l2cache_assoc) : MMU_PAGESIZE)
 387
 388 /*
 389  * Return the log2(pagesize(szc) / MMU_PAGESIZE) --- or the shift count
 390  * for the number of base pages in this pagesize
 391  */
 392 #define PAGE_BSZS_SHIFT(szc) (LEVEL_SHIFT(szc) - MMU_PAGESHIFT)
 393
 394 /*
 395  * Internal PG_ flags.
 396  */
 397 #define PGI_RELOCONLY   0x010000        /* opposite of PG_NORELOC */
 398 #define PGI_NOCAGE      0x020000        /* cage is disabled */
 399 #define PGI_PGCPHIPRI   0x040000        /* page_get_contig_page pri alloc */
 400 #define PGI_PGCPSZC0    0x080000        /* relocate base pagesize page */
 401
 402 /*
 403  * PGI range flags - should not overlap PGI flags
 404  */
 405 #define PGI_MT_RANGE0   0x1000000       /* mtype range to 0 */
 406 #define PGI_MT_RANGE16M 0x2000000       /* mtype range to 16m */
 407 #define PGI_MT_RANGE4G  0x4000000       /* mtype range to 4g */
 408 #define PGI_MT_NEXT     0x8000000       /* get next mtype */
 409 #define PGI_MT_RANGE    (PGI_MT_RANGE0 | PGI_MT_RANGE16M | PGI_MT_RANGE4G)
 410
 411
 412 /*
 413  * Maximum and default values for user heap, stack, private and shared
 414  * anonymous memory, and user text and initialized data.
 415  * Used by map_pgsz*() routines.
 416  */
 417 extern size_t max_uheap_lpsize;
 418 extern size_t default_uheap_lpsize;
 419 extern size_t max_ustack_lpsize;
 420 extern size_t default_ustack_lpsize;
 421 extern size_t max_privmap_lpsize;
 422 extern size_t max_uidata_lpsize;
 423 extern size_t max_utext_lpsize;
 424 extern size_t max_shm_lpsize;
 425 extern size_t mcntl0_lpsize;
 426
 427 /*
 428  * Sanity control. Don't use large pages regardless of user
 429  * settings if there's less than priv or shm_lpg_min_physmem memory installed.
 430  * The units for this variable are 8K pages.
 431  */
 432 extern pgcnt_t privm_lpg_min_physmem;
 433 extern pgcnt_t shm_lpg_min_physmem;
 434
 435 /*
 436  * hash as and addr to get a bin.
 437  */
 438
 439 #define AS_2_BIN(as, seg, vp, addr, bin, szc)                               \
 440         bin = (((((uintptr_t)(addr) >> PAGESHIFT) + ((uintptr_t)(as) >> 4)) \
 441             & page_colors_mask) >>                                          \
 442             (hw_page_array[szc].hp_shift - hw_page_array[0].hp_shift))
 443
 444 /*
 445  * cpu private vm data - accessed thru CPU->cpu_vm_data
 446  *      vc_pnum_memseg: tracks last memseg visited in page_numtopp_nolock()
 447  *      vc_pnext_memseg: tracks last memseg visited in page_nextn()
 448  *      vc_kmptr: orignal unaligned kmem pointer for this vm_cpu_data_t
 449  *      vc_kmsize: orignal kmem size for this vm_cpu_data_t
 450  */
 451
 452 typedef struct {
 453         struct memseg   *vc_pnum_memseg;
 454         struct memseg   *vc_pnext_memseg;
 455         void            *vc_kmptr;
 456         size_t          vc_kmsize;
 457 } vm_cpu_data_t;
 458
 459 /* allocation size to ensure vm_cpu_data_t resides in its own cache line */
 460 #define VM_CPU_DATA_PADSIZE                                             \
 461         (P2ROUNDUP(sizeof (vm_cpu_data_t), L2CACHE_ALIGN_MAX))
 462
 463 /*
 464  * When a bin is empty, and we can't satisfy a color request correctly,
 465  * we scan.  If we assume that the programs have reasonable spatial
 466  * behavior, then it will not be a good idea to use the adjacent color.
 467  * Using the adjacent color would result in virtually adjacent addresses
 468  * mapping into the same spot in the cache.  So, if we stumble across
 469  * an empty bin, skip a bunch before looking.  After the first skip,
 470  * then just look one bin at a time so we don't miss our cache on
 471  * every look. Be sure to check every bin.  Page_create() will panic
 472  * if we miss a page.
 473  *
 474  * This also explains the `<=' in the for loops in both page_get_freelist()
 475  * and page_get_cachelist().  Since we checked the target bin, skipped
 476  * a bunch, then continued one a time, we wind up checking the target bin
 477  * twice to make sure we get all of them bins.
 478  */
 479 #define BIN_STEP        19
 480
 481 #ifdef VM_STATS
 482 struct vmm_vmstats_str {
 483         ulong_t pgf_alloc[MMU_PAGE_SIZES];      /* page_get_freelist */
 484         ulong_t pgf_allocok[MMU_PAGE_SIZES];
 485         ulong_t pgf_allocokrem[MMU_PAGE_SIZES];
 486         ulong_t pgf_allocfailed[MMU_PAGE_SIZES];
 487         ulong_t pgf_allocdeferred;
 488         ulong_t pgf_allocretry[MMU_PAGE_SIZES];
 489         ulong_t pgc_alloc;                      /* page_get_cachelist */
 490         ulong_t pgc_allocok;
 491         ulong_t pgc_allocokrem;
 492         ulong_t pgc_allocokdeferred;
 493         ulong_t pgc_allocfailed;
 494         ulong_t pgcp_alloc[MMU_PAGE_SIZES];     /* page_get_contig_pages */
 495         ulong_t pgcp_allocfailed[MMU_PAGE_SIZES];
 496         ulong_t pgcp_allocempty[MMU_PAGE_SIZES];
 497         ulong_t pgcp_allocok[MMU_PAGE_SIZES];
 498         ulong_t ptcp[MMU_PAGE_SIZES];           /* page_trylock_contig_pages */
 499         ulong_t ptcpfreethresh[MMU_PAGE_SIZES];
 500         ulong_t ptcpfailexcl[MMU_PAGE_SIZES];
 501         ulong_t ptcpfailszc[MMU_PAGE_SIZES];
 502         ulong_t ptcpfailcage[MMU_PAGE_SIZES];
 503         ulong_t ptcpok[MMU_PAGE_SIZES];
 504         ulong_t pgmf_alloc[MMU_PAGE_SIZES];     /* page_get_mnode_freelist */
 505         ulong_t pgmf_allocfailed[MMU_PAGE_SIZES];
 506         ulong_t pgmf_allocempty[MMU_PAGE_SIZES];
 507         ulong_t pgmf_allocok[MMU_PAGE_SIZES];
 508         ulong_t pgmc_alloc;                     /* page_get_mnode_cachelist */
 509         ulong_t pgmc_allocfailed;
 510         ulong_t pgmc_allocempty;
 511         ulong_t pgmc_allocok;
 512         ulong_t pladd_free[MMU_PAGE_SIZES];     /* page_list_add/sub */
 513         ulong_t plsub_free[MMU_PAGE_SIZES];
 514         ulong_t pladd_cache;
 515         ulong_t plsub_cache;
 516         ulong_t plsubpages_szcbig;
 517         ulong_t plsubpages_szc0;
 518         ulong_t pfs_req[MMU_PAGE_SIZES];        /* page_freelist_split */
 519         ulong_t pfs_demote[MMU_PAGE_SIZES];
 520         ulong_t pfc_coalok[MMU_PAGE_SIZES][MAX_MNODE_MRANGES];
 521         ulong_t ppr_reloc[MMU_PAGE_SIZES];      /* page_relocate */
 522         ulong_t ppr_relocnoroot[MMU_PAGE_SIZES];
 523         ulong_t ppr_reloc_replnoroot[MMU_PAGE_SIZES];
 524         ulong_t ppr_relocnolock[MMU_PAGE_SIZES];
 525         ulong_t ppr_relocnomem[MMU_PAGE_SIZES];
 526         ulong_t ppr_relocok[MMU_PAGE_SIZES];
 527         ulong_t ppr_copyfail;
 528         /* page coalesce counter */
 529         ulong_t page_ctrs_coalesce[MMU_PAGE_SIZES][MAX_MNODE_MRANGES];
 530         /* candidates useful */
 531         ulong_t page_ctrs_cands_skip[MMU_PAGE_SIZES][MAX_MNODE_MRANGES];
 532         /* ctrs changed after locking */
 533         ulong_t page_ctrs_changed[MMU_PAGE_SIZES][MAX_MNODE_MRANGES];
 534         /* page_freelist_coalesce failed */
 535         ulong_t page_ctrs_failed[MMU_PAGE_SIZES][MAX_MNODE_MRANGES];
 536         ulong_t page_ctrs_coalesce_all; /* page coalesce all counter */
 537         ulong_t page_ctrs_cands_skip_all; /* candidates useful for all func */
 538         ulong_t restrict4gcnt;
 539         ulong_t unrestrict16mcnt;       /* non-DMA 16m allocs allowed */
 540         ulong_t pgpanicalloc;           /* PG_PANIC allocation */
 541         ulong_t pcf_deny[MMU_PAGE_SIZES];       /* page_chk_freelist */
 542         ulong_t pcf_allow[MMU_PAGE_SIZES];
 543 };
 544 extern struct vmm_vmstats_str vmm_vmstats;
 545 #endif  /* VM_STATS */
 546
 547 extern size_t page_ctrs_sz(void);
 548 extern caddr_t page_ctrs_alloc(caddr_t);
 549 extern void page_ctr_sub(int, int, page_t *, int);
 550 extern page_t *page_freelist_split(uchar_t,
 551     uint_t, int, int, pfn_t, pfn_t, page_list_walker_t *);
 552 extern page_t *page_freelist_coalesce(int, uchar_t, uint_t, uint_t, int,
 553     pfn_t);
 554 extern void page_freelist_coalesce_all(int);
 555 extern uint_t page_get_pagecolors(uint_t);
 556 extern void pfnzero(pfn_t, uint_t, uint_t);
 557
 558 #ifdef  __cplusplus
 559 }
 560 #endif
 561
 562 #endif  /* _VM_DEP_H */