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 /*
23 * Copyright 2009 Sun Microsystems, Inc. All rights reserved.
24 * Use is subject to license terms.
25 */
26
27 #ifndef _LGRP_H
28 #define _LGRP_H
29
30 /*
31 * locality group definitions for kernel
32 */
33
34 #include <sys/types.h>
35
36 #ifdef __cplusplus
37 extern "C" {
38 #endif
39
40 #define LGRP_NONE (-1) /* non-existent lgroup ID */
41
42 #if (!defined(_KERNEL) && !defined(_KMEMUSER))
43 typedef struct lgrp_mem_policy_info { int opaque[2]; } lgrp_mem_policy_info_t;
44 #endif /* !_KERNEL && !_KMEMUSER */
45
46 #if (defined(_KERNEL) || defined(_KMEMUSER))
47 #include <sys/cpuvar.h>
48 #include <sys/bitmap.h>
49 #include <sys/vnode.h>
50 #include <vm/anon.h>
51 #include <vm/seg.h>
52 #include <sys/lgrp_user.h>
53 #include <sys/param.h>
54
55 typedef uint32_t lgrp_load_t; /* lgrp_loadavg type */
56 typedef uintptr_t lgrp_handle_t; /* lgrp handle */
57
58 #define LGRP_NONE_SUCH LGRP_NONE /* non-existent lgroup ID */
59 /* null platform handle */
60 #define LGRP_NULL_HANDLE ((lgrp_handle_t)0xbadbad)
61 #define LGRP_DEFAULT_HANDLE ((lgrp_handle_t)0xbabecafe) /* uma handle */
62 #define LGRP_ROOTID (0) /* root lgroup ID */
63
64 /*
65 * Maximum number of lgrps a platform may define.
66 */
67 #define NLGRPS_MAX 64
68 #define LGRP_LOADAVG_MAX UINT32_MAX
69
70 /*
71 * The load-average we expect for one cpu-bound thread's worth of load
72 */
73 #define LGRP_LOADAVG_THREAD_MAX 65516
74
75 /*
76 * The input to the load-average generating function for one cpu-bound thread's
77 * worth of load
78 */
79
80 #define LGRP_LOADAVG_IN_THREAD_MAX 128
81
82 /*
83 * LPL actions
84 */
85
86 typedef enum {
87 LPL_INCREMENT,
88 LPL_DECREMENT
89 } lpl_act_t;
90
91 /*
92 * lgroup statistics. Most of these are counters that are updated
93 * dynamically so they are hashed to CPU buckets to reduce cache
94 * interference. The remaining statistics are snapshots of kernel
95 * data, so they aren't stored in the array of counter stats.
96 *
97 * For the hashed stats to make sense, you have to sum all the buckets for
98 * that stat, hence macros are provided to read the stats.
99 */
100
101 #define LGRP_NUM_CPU_BUCKETS 8 /* must be power of 2 */
102 #define LGRP_CPU_BUCKET_MASK (LGRP_NUM_CPU_BUCKETS - 1)
103
104 /*
105 * Flags for what to do with lgroup memory policy
106 * Used for heap and stack where policy is extended to new segments added to
107 * the end
108 */
109 #define LGRP_MP_FLAG_EXTEND_UP 0x1 /* policy should extend up */
110 #define LGRP_MP_FLAG_EXTEND_DOWN 0x2 /* policy should extend down */
111
112 #define LGRP_STAT(stats, bucket, whichstat) \
113 ((stats)->ls_data[bucket][whichstat])
114
115 /* Return a pointer suitable for an atomic 64-bit op on the bucket */
116 #define LGRP_STAT_WRITE_PTR(stats, whichstat) \
117 (&LGRP_STAT(stats, (CPU->cpu_id) & LGRP_CPU_BUCKET_MASK, \
118 whichstat))
119
120 /* Sum up all the buckets and return the value in 'val' */
121 #define LGRP_STAT_READ(stats, whichstat, val) { \
122 int bkt; \
123 for (val = 0, bkt = 0; bkt < LGRP_NUM_CPU_BUCKETS; bkt++) \
124 val += LGRP_STAT(stats, bkt, whichstat); \
125 }
126
127 /* Reset all buckets for the stat to 0 */
128 #define LGRP_STAT_RESET(stats, stat) { \
129 int i; \
130 for (i = 0; i < LGRP_NUM_CPU_BUCKETS; i++) \
131 LGRP_STAT(stats, i, stat) = 0; \
132 }
133
134 /*
135 * Define all of the statistics that are kept for lgrp kstats,
136 * and their corresponding text names.
137 */
138
139 typedef enum lgrp_stat_types {
140 LGRP_NUM_MIGR, /* # migrations away from this lgrp */
141 LGRP_NUM_ALLOC_FAIL, /* # times alloc fails for chosen lgrp */
142 LGRP_PM_SRC_PGS, /* # pages migrated from this lgrp */
143 LGRP_PM_DEST_PGS, /* # pages migrated to this lgrp */
144 LGRP_PM_FAIL_ALLOC_PGS, /* # pages failed to migrate to this lgrp */
145 LGRP_PM_FAIL_LOCK_PGS, /* # pages failed to migrate from this lgrp */
146 LGRP_PMM_PGS, /* # pages marked to migrate from this lgrp */
147 LGRP_PMM_FAIL_PGS, /* # pages marked to migrate from this lgrp */
148 LGRP_NUM_DEFAULT, /* # of times default policy applied */
149 LGRP_NUM_NEXT, /* # of times next touch policy applied */
150 LGRP_NUM_RANDOM, /* # of times random policy applied */
151 LGRP_NUM_RANDOM_PROC, /* # of times random proc policy applied */
152 LGRP_NUM_RANDOM_PSET, /* # of times random pset policy applied */
153 LGRP_NUM_ROUNDROBIN, /* # of times round robin policy applied */
154 LGRP_NUM_NEXT_SEG, /* # of times next to seg policy applied */
155 LGRP_NUM_COUNTER_STATS, /* always last */
156 LGRP_CTR_STATS_ALLOC = 16 /* cache-align pad - multiple of 8 */
157 /* always keep >= LGRP_NUM_COUNTER_STATS */
158 } lgrp_stat_t;
159
160 typedef enum lgrp_snap_stat_types {
161 LGRP_NUM_CPUS, /* number of CPUs */
162 LGRP_NUM_PG_FREE, /* # of free pages */
163 LGRP_NUM_PG_AVAIL, /* # of allocatable physical pages */
164 LGRP_NUM_PG_INSTALL, /* # of installed physical pages */
165 LGRP_LOADAVG, /* unscaled load average of this lgrp */
166 LGRP_LOADAVG_SCALE, /* load unit of one CPU bound thread */
167 LGRP_NUM_SNAPSHOT_STATS /* always last */
168 } lgrp_snap_stat_t;
169
170 #define LGRP_KSTAT_NAMES \
171 static char *lgrp_kstat_names[] = { \
172 \
173 /* Counter stats */ \
174 "lwp migrations", \
175 "alloc fail", \
176 "pages migrated from", \
177 "pages migrated to", \
178 "pages failed to migrate to", \
179 "pages failed to migrate from", \
180 "pages marked for migration", \
181 "pages failed to mark", \
182 "default policy", \
183 "next-touch policy", \
184 "random policy", \
185 "span process policy", \
186 "span psrset policy", \
187 "round robin policy", \
188 "next-seg policy", \
189 \
190 /* Snapshot stats */ \
191 "cpus", \
192 "pages free", \
193 "pages avail", \
194 "pages installed", \
195 "load average", \
196 "loadscale" \
197 }
198
199 #define LGRP_NUM_STATS ((int)LGRP_NUM_COUNTER_STATS + \
200 (int)LGRP_NUM_SNAPSHOT_STATS)
201
202 /*
203 * The contents of this structure are opaque and should only be
204 * accessed through the LGRP_STAT macro.
205 */
206 struct lgrp_stats {
207 int64_t ls_data[LGRP_NUM_CPU_BUCKETS][LGRP_CTR_STATS_ALLOC];
208 };
209
210 /* The kernel's version of a bitmap of lgroups */
211 typedef uint64_t klgrpset_t;
212
213 /*
214 * This really belongs in memnode.h, but it must be defined here to avoid
215 * recursive inclusion problems. Note that memnode.h includes this header.
216 */
217 typedef uint64_t mnodeset_t;
218
219 /*
220 * lgroup structure
221 *
222 * Visible to generic code and contains the lgroup ID, CPUs in this lgroup,
223 * and a platform handle used to identify this lgroup to the lgroup platform
224 * support code
225 */
226 typedef struct lgrp {
227
228 lgrp_id_t lgrp_id; /* which lgroup */
229 int lgrp_latency;
230 lgrp_handle_t lgrp_plathand; /* handle for platform calls */
231 struct lgrp *lgrp_parent; /* parent lgroup */
232 uint_t lgrp_reserved1; /* filler */
233 uint_t lgrp_childcnt; /* number of children lgroups */
234 klgrpset_t lgrp_children; /* children lgroups */
235 klgrpset_t lgrp_leaves; /* (direct decendant) leaf lgroups */
236
237 /*
238 * set of lgroups containing a given type of resource
239 * at this level of locality
240 */
241 klgrpset_t lgrp_set[LGRP_RSRC_COUNT];
242
243 mnodeset_t lgrp_mnodes; /* set of memory nodes in this lgroup */
244 uint_t lgrp_nmnodes; /* number of memnodes */
245 uint_t lgrp_reserved2; /* filler */
246
247 struct cpu *lgrp_cpu; /* pointer to a cpu may be null */
248 uint_t lgrp_cpucnt; /* number of cpus in this lgrp */
249 kstat_t *lgrp_kstat; /* per-lgrp kstats */
250 } lgrp_t;
251
252 /*
253 * lgroup load average structure
254 */
255
256 typedef struct lgrp_ld {
257 lgrp_load_t lpl_loadavg; /* load average */
258 uint_t lpl_ncpu; /* how many cpus */
259 lgrp_id_t lpl_lgrpid; /* which group this lpl part of */
260 lgrp_t *lpl_lgrp; /* ptr to lpl's lgrp */
261 struct lgrp_ld *lpl_parent; /* lpl of parent lgrp */
262 struct cpu *lpl_cpus; /* list of cpus in lpl */
263 /* NULL for non-leaf lgrps */
264 uint_t lpl_nrset; /* no. of leaf lpls for lgrp */
265 hrtime_t lpl_homed_time; /* time of last homing to this lpl */
266 uint_t lpl_rset_sz; /* Resource set capacity */
267 struct lgrp_ld **lpl_rset; /* leaf lpls for lgrp */
268 /* contains ptr to self for leaf lgrp */
269 int *lpl_id2rset; /* mapping of lgrpid to rset index */
270 } lpl_t;
271
272 /*
273 * 1 << LGRP_MAX_EFFECT_SHFT == lgrp_loadavg_max_effect
274 */
275 #define LGRP_MAX_EFFECT_SHFT 16
276
277 /*
278 * Operations handled by lgrp_config()
279 */
280 typedef enum lgrp_config_flag {
281 LGRP_CONFIG_NOP,
282 LGRP_CONFIG_CPU_ADD,
283 LGRP_CONFIG_CPU_DEL,
284 LGRP_CONFIG_CPU_ONLINE,
285 LGRP_CONFIG_CPU_OFFLINE,
286 LGRP_CONFIG_CPUPART_ADD,
287 LGRP_CONFIG_CPUPART_DEL,
288 LGRP_CONFIG_MEM_ADD,
289 LGRP_CONFIG_MEM_DEL,
290 LGRP_CONFIG_MEM_RENAME,
291 LGRP_CONFIG_GEN_UPDATE,
292 LGRP_CONFIG_FLATTEN,
293 LGRP_CONFIG_LAT_CHANGE_ALL,
294 LGRP_CONFIG_LAT_CHANGE
295 } lgrp_config_flag_t;
296
297 /*
298 * Stages of lgroup framework initialization (done through lgrp_init()):
299 *
300 * 1) Initialize common and platform specific code (called in mlsetup())
301 *
302 * 2) Setup root lgroup and add CPU 0 to lgroup(s) (called near beginning of
303 * main() before startup())
304 *
305 * 3) Probe from CPU 0 and copy and release any BOP_ALLOC-ed memory temporarily
306 * allocated before kernel memory allocator is setup (called in main()
307 * after startup(), gethrtime() is setup, and before interrupts enabled)
308 *
309 * 4) Check for null proc LPA on Starcat, collapse lgroup topology (if
310 * necessary), setup lgroup kstats, etc. (called before start_other_cpus())
311 *
312 * 5) Finish any lgroup initialization needed including updating lgroup
313 * topology after all CPUs started (called after start_other_cpus())
314 */
315 typedef enum lgrp_init_stages {
316 LGRP_INIT_STAGE1,
317 LGRP_INIT_STAGE2,
318 LGRP_INIT_STAGE3,
319 LGRP_INIT_STAGE4,
320 LGRP_INIT_STAGE5
321 } lgrp_init_stages_t;
322
323 /*
324 * Memory allocation policies
325 */
326 typedef enum lgrp_mem_policy {
327 LGRP_MEM_POLICY_DEFAULT,
328 LGRP_MEM_POLICY_NEXT, /* near LWP to next touch */
329 LGRP_MEM_POLICY_RANDOM_PROC, /* randomly across process */
330 LGRP_MEM_POLICY_RANDOM_PSET, /* randomly across processor set */
331 LGRP_MEM_POLICY_RANDOM, /* randomly across all lgroups */
332 LGRP_MEM_POLICY_ROUNDROBIN, /* round robin across all lgroups */
333 LGRP_MEM_POLICY_NEXT_CPU, /* Near next CPU to touch memory */
334 LGRP_MEM_POLICY_NEXT_SEG, /* lgrp specified directly by seg */
335 LGRP_NUM_MEM_POLICIES
336 } lgrp_mem_policy_t;
337
338 /*
339 * Search scopes for finding resouces
340 */
341 typedef enum lgrp_res_ss {
342 LGRP_SRCH_LOCAL, /* Search local lgroup only */
343 LGRP_SRCH_HIER /* Search entire hierarchy */
344 } lgrp_res_ss_t;
345
346 /*
347 * Cookie used for lgrp mnode selection
348 */
349 typedef struct lgrp_mnode_cookie {
350 lgrp_t *lmc_lgrp; /* lgrp under consideration */
351 mnodeset_t lmc_nodes; /* nodes not yet tried in lgrp */
352 int lmc_cnt; /* how many nodes in untried set */
353 mnodeset_t lmc_tried; /* nodes already tried */
354 int lmc_ntried; /* how many nodes in tried set */
355 lgrp_res_ss_t lmc_scope; /* consider non-local nodes? */
356 ushort_t lmc_rand; /* a "random" number */
357 } lgrp_mnode_cookie_t;
358
359 /*
360 * Information needed to implement memory allocation policy
361 */
362 typedef struct lgrp_mem_policy_info {
363 int mem_policy; /* memory allocation policy */
364 lgrp_id_t mem_lgrpid; /* lgroup id */
365 } lgrp_mem_policy_info_t;
366
367 /*
368 * Shared memory policy segment
369 */
370 typedef struct lgrp_shm_policy_seg {
371 u_offset_t shm_off; /* offset into shared object */
372 size_t shm_size; /* size of segment */
373 lgrp_mem_policy_info_t shm_policy; /* memory allocation policy */
374 avl_node_t shm_tree; /* AVL tree */
375 } lgrp_shm_policy_seg_t;
376
377 /*
378 * Shared memory locality info
379 */
380 typedef struct lgrp_shm_locality {
381 size_t loc_count; /* reference count */
382 avl_tree_t *loc_tree; /* policy segment tree */
383 krwlock_t loc_lock; /* protects tree */
384 } lgrp_shm_locality_t;
385
386 /*
387 * Queries that may be made to determine lgroup memory size
388 */
389 typedef enum {
390 LGRP_MEM_SIZE_FREE, /* number of free pages */
391 LGRP_MEM_SIZE_AVAIL, /* number of pages in phys_avail */
392 LGRP_MEM_SIZE_INSTALL /* number of pages in phys_install */
393 } lgrp_mem_query_t;
394
395 /*
396 * Argument for the memory copy-rename operation, contains the source and the
397 * destination platform handles.
398 */
399 typedef struct lgrp_config_mem_rename {
400 lgrp_handle_t lmem_rename_from;
401 lgrp_handle_t lmem_rename_to;
402 } lgrp_config_mem_rename_t;
403
404 /* Macro to clear an lgroup bitmap */
405 #define klgrpset_clear(klgrpset) \
406 (klgrpset) = (klgrpset_t)0
407
408 /* Macro to fill an lgroup bitmap */
409 #define klgrpset_fill(klgrpset) \
410 (klgrpset) = (klgrpset_t)(-1)
411
412 /* Macro to add an lgroup to an lgroup bitmap */
413 #define klgrpset_add(klgrpset, lgrpid) \
414 (klgrpset) |= ((klgrpset_t)1 << (lgrpid))
415
416 /* Macro to delete an lgroup from an lgroup bitmap */
417 #define klgrpset_del(klgrpset, lgrpid) \
418 (klgrpset) &= ~((klgrpset_t)1 << (lgrpid))
419
420 /* Macro to copy a klgrpset into another klgrpset */
421 #define klgrpset_copy(klgrpset_to, klgrpset_from) \
422 (klgrpset_to) = (klgrpset_from)
423
424 /* Macro to perform an 'and' operation on a pair of lgroup bitmaps */
425 #define klgrpset_and(klgrpset_rslt, klgrpset_arg) \
426 (klgrpset_rslt) &= (klgrpset_arg)
427
428 /* Macro to perform an 'or' operation on a pair of lgroup bitmaps */
429 #define klgrpset_or(klgrpset_rslt, klgrpset_arg) \
430 (klgrpset_rslt) |= (klgrpset_arg)
431
432 /* Macro to perform a 'diff' operation on a pair of lgroup bitmaps */
433 #define klgrpset_diff(klgrpset_rslt, klgrpset_arg) \
434 (klgrpset_rslt) &= ~(klgrpset_arg)
435
436 /* Macro to check if an lgroup is a member of an lgrpset */
437 #define klgrpset_ismember(klgrpset, lgrpid) \
438 ((klgrpset) & ((klgrpset_t)1 << (lgrpid)))
439
440 /* Macro to check if an lgroup bitmap is empty */
441 #define klgrpset_isempty(klgrpset) \
442 ((klgrpset) == (klgrpset_t)0)
443
444 /* Macro to check if two lgrpsets intersect */
445 #define klgrpset_intersects(klgrpset1, klgrpset2) \
446 ((klgrpset1) & (klgrpset2))
447
448 /* Macro to count the number of members in an lgrpset */
449 #define klgrpset_nlgrps(klgrpset, count) \
450 { \
451 lgrp_id_t lgrpid; \
452 for (lgrpid = 0, count = 0; lgrpid <= lgrp_alloc_max; lgrpid++) {\
453 if (klgrpset_ismember(klgrpset, lgrpid)) \
454 count++; \
455 } \
456 }
457
458 /* Macro to get total memory size (in bytes) of a given set of lgroups */
459 #define klgrpset_totalsize(klgrpset, size) \
460 { \
461 lgrp_handle_t hand; \
462 lgrp_id_t lgrpid; \
463 \
464 for (lgrpid = 0, size = 0; lgrpid <= lgrp_alloc_max; lgrpid++) {\
465 if (klgrpset_ismember(klgrpset, lgrpid) && \
466 lgrp_table[lgrpid]) { \
467 hand = lgrp_table[lgrpid]->lgrp_plathand; \
468 size += lgrp_plat_mem_size(hand, \
469 LGRP_MEM_SIZE_AVAIL) * PAGESIZE; \
470 } \
471 } \
472 }
473
474 /*
475 * Does this lgroup exist?
476 */
477 #define LGRP_EXISTS(lgrp) \
478 (lgrp != NULL && lgrp->lgrp_id != LGRP_NONE)
479
480 /*
481 * Macro for testing if a CPU is contained in an lgrp.
482 */
483 #define LGRP_CONTAINS_CPU(lgrp, cpu) \
484 (klgrpset_ismember(lgrp->lgrp_set[LGRP_RSRC_CPU], \
485 cpu->cpu_lpl->lpl_lgrpid))
486
487 /*
488 * Initialize an lgrp_mnode_cookie
489 */
490 #define LGRP_MNODE_COOKIE_INIT(c, lgrp, scope) \
491 { \
492 bzero(&(c), sizeof (lgrp_mnode_cookie_t)); \
493 (&(c))->lmc_lgrp = lgrp; \
494 (&(c))->lmc_nodes = lgrp->lgrp_mnodes; \
495 (&(c))->lmc_cnt = lgrp->lgrp_nmnodes; \
496 (&(c))->lmc_scope = scope; \
497 (&(c))->lmc_rand = (ushort_t)gethrtime_unscaled() >> 4; \
498 }
499
500 /*
501 * Upgrade cookie scope from LGRP_SRCH_LOCAL to LGRP_SRCH_HIER.
502 */
503 #define LGRP_MNODE_COOKIE_UPGRADE(c) \
504 { \
505 ASSERT((&(c))->lmc_scope == LGRP_SRCH_LOCAL); \
506 (&(c))->lmc_scope = LGRP_SRCH_HIER; \
507 }
508
509 /*
510 * Macro to see whether memory allocation policy can be reapplied
511 */
512 #define LGRP_MEM_POLICY_REAPPLICABLE(p) \
513 (p == LGRP_MEM_POLICY_NEXT)
514
515 /*
516 * Return true if lgrp has CPU resources in the cpupart
517 */
518 #define LGRP_CPUS_IN_PART(lgrpid, cpupart) \
519 (cpupart->cp_lgrploads[lgrpid].lpl_ncpu > 0)
520
521 extern int lgrp_alloc_max;
522 extern lgrp_t *lgrp_table[NLGRPS_MAX]; /* indexed by lgrp_id */
523 extern int nlgrps; /* number of lgroups in machine */
524 extern int nlgrpsmax; /* max number of lgroups on platform */
525 extern lgrp_gen_t lgrp_gen; /* generation of lgroup hierarchy */
526 extern int lgrp_initialized; /* single-CPU initialization done */
527 extern int lgrp_topo_initialized; /* lgrp topology constructed */
528 extern lgrp_t *lgrp_root; /* root lgroup */
529 extern unsigned int lgrp_topo_levels;
530 extern lpl_t *lpl_bootstrap; /* bootstrap lpl for non-active CPUs */
531
532
533 /* generic interfaces */
534
535 /*
536 * lgroup management
537 */
538 int lgrp_optimizations(void);
539 void lgrp_init(lgrp_init_stages_t);
540 lgrp_t *lgrp_create(void);
541 void lgrp_destroy(lgrp_t *);
542 void lgrp_config(lgrp_config_flag_t, uintptr_t, uintptr_t);
543 lgrp_t *lgrp_hand_to_lgrp(lgrp_handle_t);
544
545 /*
546 * lgroup stats
547 */
548 void lgrp_kstat_create(struct cpu *);
549 void lgrp_kstat_destroy(struct cpu *);
550 void lgrp_stat_add(lgrp_id_t, lgrp_stat_t, int64_t);
551 int64_t lgrp_stat_read(lgrp_id_t, lgrp_stat_t);
552
553 /*
554 * lgroup memory
555 */
556 lgrp_mem_policy_t lgrp_madv_to_policy(uchar_t, size_t, int);
557 pgcnt_t lgrp_mem_size(lgrp_id_t, lgrp_mem_query_t);
558 lgrp_t *lgrp_mem_choose(struct seg *, caddr_t, size_t);
559 int lgrp_memnode_choose(lgrp_mnode_cookie_t *);
560 lgrp_mem_policy_t lgrp_mem_policy_default(size_t, int);
561 int lgrp_mnode_update(klgrpset_t, klgrpset_t *);
562 lgrp_t *lgrp_pfn_to_lgrp(pfn_t);
563 lgrp_t *lgrp_phys_to_lgrp(u_longlong_t); /* used by numat driver */
564 int lgrp_privm_policy_set(lgrp_mem_policy_t, lgrp_mem_policy_info_t *,
565 size_t);
566 void lgrp_shm_policy_init(struct anon_map *, vnode_t *);
567 void lgrp_shm_policy_fini(struct anon_map *, vnode_t *);
568 lgrp_mem_policy_info_t *lgrp_shm_policy_get(struct anon_map *, ulong_t,
569 vnode_t *, u_offset_t);
570 int lgrp_shm_policy_set(lgrp_mem_policy_t, struct anon_map *, ulong_t,
571 vnode_t *, u_offset_t, size_t);
572
573 /*
574 * Used by numat driver
575 */
576 int lgrp_query_cpu(processorid_t, lgrp_id_t *);
577 int lgrp_query_load(processorid_t, lgrp_load_t *);
578
579 /*
580 * lgroup thread placement
581 */
582 lpl_t *lgrp_affinity_best(kthread_t *, struct cpupart *, lgrp_id_t,
583 boolean_t);
584 void lgrp_affinity_init(lgrp_affinity_t **);
585 void lgrp_affinity_free(lgrp_affinity_t **);
586 lpl_t *lgrp_choose(kthread_t *t, struct cpupart *);
587 lgrp_t *lgrp_home_lgrp(void);
588 lgrp_id_t lgrp_home_id(kthread_t *);
589 void lgrp_loadavg(lpl_t *, uint_t, int);
590 void lgrp_move_thread(kthread_t *, lpl_t *, int);
591 uint64_t lgrp_get_trthr_migrations(void);
592 void lgrp_update_trthr_migrations(uint64_t);
593
594 /*
595 * lgroup topology
596 */
597 int lgrp_leaf_add(lgrp_t *, lgrp_t **, int, klgrpset_t *);
598 int lgrp_leaf_delete(lgrp_t *, lgrp_t **, int, klgrpset_t *);
599 int lgrp_rsets_empty(klgrpset_t *);
600 int lgrp_rsets_member(klgrpset_t *, lgrp_id_t);
601 int lgrp_topo_flatten(int, lgrp_t **, int, klgrpset_t *);
602 int lgrp_topo_ht_limit(void);
603 int lgrp_topo_ht_limit_default(void);
604 int lgrp_topo_ht_limit_set(int);
605 int lgrp_topo_update(lgrp_t **, int, klgrpset_t *);
606
607 /*
608 * lpl topology
609 */
610 void lpl_topo_bootstrap(lpl_t *, int);
611 int lpl_topo_flatten(int);
612 int lpl_topo_verify(struct cpupart *);
613
614
615 /* platform interfaces */
616 void lgrp_plat_init(lgrp_init_stages_t);
617 lgrp_t *lgrp_plat_alloc(lgrp_id_t lgrpid);
618 void lgrp_plat_config(lgrp_config_flag_t, uintptr_t);
619 lgrp_handle_t lgrp_plat_cpu_to_hand(processorid_t);
620 lgrp_handle_t lgrp_plat_pfn_to_hand(pfn_t);
621 int lgrp_plat_max_lgrps(void);
622 pgcnt_t lgrp_plat_mem_size(lgrp_handle_t, lgrp_mem_query_t);
623 int lgrp_plat_latency(lgrp_handle_t, lgrp_handle_t);
624 lgrp_handle_t lgrp_plat_root_hand(void);
625
626 extern uint32_t lgrp_expand_proc_thresh;
627 extern uint32_t lgrp_expand_proc_diff;
628 extern pgcnt_t lgrp_mem_free_thresh;
629 extern uint32_t lgrp_loadavg_tolerance;
630 extern uint32_t lgrp_loadavg_max_effect;
631 extern uint32_t lgrp_load_thresh;
632 extern lgrp_mem_policy_t lgrp_mem_policy_root;
633
634 #endif /* _KERNEL && _KMEMUSER */
635
636 #ifdef __cplusplus
637 }
638 #endif
639
640 #endif /* _LGRP_H */