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