1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 3 * 4 * Copyright (c) 2002, 2003, 2004, 2005 Jeffrey Roberson <jeff@FreeBSD.org> 5 * Copyright (c) 2004, 2005 Bosko Milekic <bmilekic@FreeBSD.org> 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice unmodified, this list of conditions, and the following 13 * disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 19 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 20 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 21 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 23 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 24 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 25 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 27 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 28 * 29 * $FreeBSD$ 30 * 31 */ 32 33 /* 34 * uma.h - External definitions for the Universal Memory Allocator 35 * 36 */ 37 38 #ifndef _VM_UMA_H_ 39 #define _VM_UMA_H_ 40 41 #include <sys/param.h> /* For NULL */ 42 #include <sys/malloc.h> /* For M_* */ 43 44 /* User visible parameters */ 45 #define UMA_SMALLEST_UNIT (PAGE_SIZE / 256) /* Smallest item allocated */ 46 47 /* Types and type defs */ 48 49 struct uma_zone; 50 /* Opaque type used as a handle to the zone */ 51 typedef struct uma_zone * uma_zone_t; 52 53 void zone_drain(uma_zone_t); 54 55 /* 56 * Item constructor 57 * 58 * Arguments: 59 * item A pointer to the memory which has been allocated. 60 * arg The arg field passed to uma_zalloc_arg 61 * size The size of the allocated item 62 * flags See zalloc flags 63 * 64 * Returns: 65 * 0 on success 66 * errno on failure 67 * 68 * Discussion: 69 * The constructor is called just before the memory is returned 70 * to the user. It may block if necessary. 71 */ 72 typedef int (*uma_ctor)(void *mem, int size, void *arg, int flags); 73 74 /* 75 * Item destructor 76 * 77 * Arguments: 78 * item A pointer to the memory which has been allocated. 79 * size The size of the item being destructed. 80 * arg Argument passed through uma_zfree_arg 81 * 82 * Returns: 83 * Nothing 84 * 85 * Discussion: 86 * The destructor may perform operations that differ from those performed 87 * by the initializer, but it must leave the object in the same state. 88 * This IS type stable storage. This is called after EVERY zfree call. 89 */ 90 typedef void (*uma_dtor)(void *mem, int size, void *arg); 91 92 /* 93 * Item initializer 94 * 95 * Arguments: 96 * item A pointer to the memory which has been allocated. 97 * size The size of the item being initialized. 98 * flags See zalloc flags 99 * 100 * Returns: 101 * 0 on success 102 * errno on failure 103 * 104 * Discussion: 105 * The initializer is called when the memory is cached in the uma zone. 106 * The initializer and the destructor should leave the object in the same 107 * state. 108 */ 109 typedef int (*uma_init)(void *mem, int size, int flags); 110 111 /* 112 * Item discard function 113 * 114 * Arguments: 115 * item A pointer to memory which has been 'freed' but has not left the 116 * zone's cache. 117 * size The size of the item being discarded. 118 * 119 * Returns: 120 * Nothing 121 * 122 * Discussion: 123 * This routine is called when memory leaves a zone and is returned to the 124 * system for other uses. It is the counter-part to the init function. 125 */ 126 typedef void (*uma_fini)(void *mem, int size); 127 128 /* 129 * Import new memory into a cache zone. 130 */ 131 typedef int (*uma_import)(void *arg, void **store, int count, int flags); 132 133 /* 134 * Free memory from a cache zone. 135 */ 136 typedef void (*uma_release)(void *arg, void **store, int count); 137 138 /* 139 * What's the difference between initializing and constructing? 140 * 141 * The item is initialized when it is cached, and this is the state that the 142 * object should be in when returned to the allocator. The purpose of this is 143 * to remove some code which would otherwise be called on each allocation by 144 * utilizing a known, stable state. This differs from the constructor which 145 * will be called on EVERY allocation. 146 * 147 * For example, in the initializer you may want to initialize embedded locks, 148 * NULL list pointers, set up initial states, magic numbers, etc. This way if 149 * the object is held in the allocator and re-used it won't be necessary to 150 * re-initialize it. 151 * 152 * The constructor may be used to lock a data structure, link it on to lists, 153 * bump reference counts or total counts of outstanding structures, etc. 154 * 155 */ 156 157 158 /* Function proto types */ 159 160 /* 161 * Create a new uma zone 162 * 163 * Arguments: 164 * name The text name of the zone for debugging and stats. This memory 165 * should not be freed until the zone has been deallocated. 166 * size The size of the object that is being created. 167 * ctor The constructor that is called when the object is allocated. 168 * dtor The destructor that is called when the object is freed. 169 * init An initializer that sets up the initial state of the memory. 170 * fini A discard function that undoes initialization done by init. 171 * ctor/dtor/init/fini may all be null, see notes above. 172 * align A bitmask that corresponds to the requested alignment 173 * eg 4 would be 0x3 174 * flags A set of parameters that control the behavior of the zone. 175 * 176 * Returns: 177 * A pointer to a structure which is intended to be opaque to users of 178 * the interface. The value may be null if the wait flag is not set. 179 */ 180 uma_zone_t uma_zcreate(const char *name, size_t size, uma_ctor ctor, 181 uma_dtor dtor, uma_init uminit, uma_fini fini, 182 int align, uint32_t flags); 183 184 /* 185 * Create a secondary uma zone 186 * 187 * Arguments: 188 * name The text name of the zone for debugging and stats. This memory 189 * should not be freed until the zone has been deallocated. 190 * ctor The constructor that is called when the object is allocated. 191 * dtor The destructor that is called when the object is freed. 192 * zinit An initializer that sets up the initial state of the memory 193 * as the object passes from the Keg's slab to the Zone's cache. 194 * zfini A discard function that undoes initialization done by init 195 * as the object passes from the Zone's cache to the Keg's slab. 196 * 197 * ctor/dtor/zinit/zfini may all be null, see notes above. 198 * Note that the zinit and zfini specified here are NOT 199 * exactly the same as the init/fini specified to uma_zcreate() 200 * when creating a master zone. These zinit/zfini are called 201 * on the TRANSITION from keg to zone (and vice-versa). Once 202 * these are set, the primary zone may alter its init/fini 203 * (which are called when the object passes from VM to keg) 204 * using uma_zone_set_init/fini()) as well as its own 205 * zinit/zfini (unset by default for master zone) with 206 * uma_zone_set_zinit/zfini() (note subtle 'z' prefix). 207 * 208 * master A reference to this zone's Master Zone (Primary Zone), 209 * which contains the backing Keg for the Secondary Zone 210 * being added. 211 * 212 * Returns: 213 * A pointer to a structure which is intended to be opaque to users of 214 * the interface. The value may be null if the wait flag is not set. 215 */ 216 uma_zone_t uma_zsecond_create(char *name, uma_ctor ctor, uma_dtor dtor, 217 uma_init zinit, uma_fini zfini, uma_zone_t master); 218 219 /* 220 * Add a second master to a secondary zone. This provides multiple data 221 * backends for objects with the same size. Both masters must have 222 * compatible allocation flags. Presently, UMA_ZONE_MALLOC type zones are 223 * the only supported. 224 * 225 * Returns: 226 * Error on failure, 0 on success. 227 */ 228 int uma_zsecond_add(uma_zone_t zone, uma_zone_t master); 229 230 /* 231 * Create cache-only zones. 232 * 233 * This allows uma's per-cpu cache facilities to handle arbitrary 234 * pointers. Consumers must specify the import and release functions to 235 * fill and destroy caches. UMA does not allocate any memory for these 236 * zones. The 'arg' parameter is passed to import/release and is caller 237 * specific. 238 */ 239 uma_zone_t uma_zcache_create(char *name, int size, uma_ctor ctor, uma_dtor dtor, 240 uma_init zinit, uma_fini zfini, uma_import zimport, 241 uma_release zrelease, void *arg, int flags); 242 243 /* 244 * Definitions for uma_zcreate flags 245 * 246 * These flags share space with UMA_ZFLAGs in uma_int.h. Be careful not to 247 * overlap when adding new features. 0xff000000 is in use by uma_int.h. 248 */ 249 #define UMA_ZONE_PAGEABLE 0x0001 /* Return items not fully backed by 250 physical memory XXX Not yet */ 251 #define UMA_ZONE_ZINIT 0x0002 /* Initialize with zeros */ 252 #define UMA_ZONE_STATIC 0x0004 /* Statically sized zone */ 253 #define UMA_ZONE_OFFPAGE 0x0008 /* Force the slab structure allocation 254 off of the real memory */ 255 #define UMA_ZONE_MALLOC 0x0010 /* For use by malloc(9) only! */ 256 #define UMA_ZONE_NOFREE 0x0020 /* Do not free slabs of this type! */ 257 #define UMA_ZONE_MTXCLASS 0x0040 /* Create a new lock class */ 258 #define UMA_ZONE_VM 0x0080 /* 259 * Used for internal vm datastructures 260 * only. 261 */ 262 #define UMA_ZONE_HASH 0x0100 /* 263 * Use a hash table instead of caching 264 * information in the vm_page. 265 */ 266 #define UMA_ZONE_SECONDARY 0x0200 /* Zone is a Secondary Zone */ 267 /* 0x0400 Unused */ 268 #define UMA_ZONE_MAXBUCKET 0x0800 /* Use largest buckets */ 269 #define UMA_ZONE_CACHESPREAD 0x1000 /* 270 * Spread memory start locations across 271 * all possible cache lines. May 272 * require many virtually contiguous 273 * backend pages and can fail early. 274 */ 275 #define UMA_ZONE_VTOSLAB 0x2000 /* Zone uses vtoslab for lookup. */ 276 #define UMA_ZONE_NODUMP 0x4000 /* 277 * Zone's pages will not be included in 278 * mini-dumps. 279 */ 280 #define UMA_ZONE_PCPU 0x8000 /* 281 * Allocates mp_maxid + 1 slabs sized to 282 * sizeof(struct pcpu). 283 */ 284 285 /* 286 * These flags are shared between the keg and zone. In zones wishing to add 287 * new kegs these flags must be compatible. Some are determined based on 288 * physical parameters of the request and may not be provided by the consumer. 289 */ 290 #define UMA_ZONE_INHERIT \ 291 (UMA_ZONE_OFFPAGE | UMA_ZONE_MALLOC | UMA_ZONE_NOFREE | \ 292 UMA_ZONE_HASH | UMA_ZONE_VTOSLAB | UMA_ZONE_PCPU) 293 294 /* Definitions for align */ 295 #define UMA_ALIGN_PTR (sizeof(void *) - 1) /* Alignment fit for ptr */ 296 #define UMA_ALIGN_LONG (sizeof(long) - 1) /* "" long */ 297 #define UMA_ALIGN_INT (sizeof(int) - 1) /* "" int */ 298 #define UMA_ALIGN_SHORT (sizeof(short) - 1) /* "" short */ 299 #define UMA_ALIGN_CHAR (sizeof(char) - 1) /* "" char */ 300 #define UMA_ALIGN_CACHE (0 - 1) /* Cache line size align */ 301 #define UMA_ALIGNOF(type) (_Alignof(type) - 1) /* Alignment fit for 'type' */ 302 303 /* 304 * Destroys an empty uma zone. If the zone is not empty uma complains loudly. 305 * 306 * Arguments: 307 * zone The zone we want to destroy. 308 * 309 */ 310 void uma_zdestroy(uma_zone_t zone); 311 312 /* 313 * Allocates an item out of a zone 314 * 315 * Arguments: 316 * zone The zone we are allocating from 317 * arg This data is passed to the ctor function 318 * flags See sys/malloc.h for available flags. 319 * 320 * Returns: 321 * A non-null pointer to an initialized element from the zone is 322 * guaranteed if the wait flag is M_WAITOK. Otherwise a null pointer 323 * may be returned if the zone is empty or the ctor failed. 324 */ 325 326 void *uma_zalloc_arg(uma_zone_t zone, void *arg, int flags); 327 328 /* 329 * Allocates an item out of a zone without supplying an argument 330 * 331 * This is just a wrapper for uma_zalloc_arg for convenience. 332 * 333 */ 334 static __inline void *uma_zalloc(uma_zone_t zone, int flags); 335 336 static __inline void * 337 uma_zalloc(uma_zone_t zone, int flags) 338 { 339 return uma_zalloc_arg(zone, NULL, flags); 340 } 341 342 /* 343 * Frees an item back into the specified zone. 344 * 345 * Arguments: 346 * zone The zone the item was originally allocated out of. 347 * item The memory to be freed. 348 * arg Argument passed to the destructor 349 * 350 * Returns: 351 * Nothing. 352 */ 353 354 void uma_zfree_arg(uma_zone_t zone, void *item, void *arg); 355 356 /* 357 * Frees an item back to a zone without supplying an argument 358 * 359 * This is just a wrapper for uma_zfree_arg for convenience. 360 * 361 */ 362 static __inline void uma_zfree(uma_zone_t zone, void *item); 363 364 static __inline void 365 uma_zfree(uma_zone_t zone, void *item) 366 { 367 uma_zfree_arg(zone, item, NULL); 368 } 369 370 /* 371 * Wait until the specified zone can allocate an item. 372 */ 373 void uma_zwait(uma_zone_t zone); 374 375 /* 376 * XXX The rest of the prototypes in this header are h0h0 magic for the VM. 377 * If you think you need to use it for a normal zone you're probably incorrect. 378 */ 379 380 /* 381 * Backend page supplier routines 382 * 383 * Arguments: 384 * zone The zone that is requesting pages. 385 * size The number of bytes being requested. 386 * pflag Flags for these memory pages, see below. 387 * wait Indicates our willingness to block. 388 * 389 * Returns: 390 * A pointer to the allocated memory or NULL on failure. 391 */ 392 393 typedef void *(*uma_alloc)(uma_zone_t zone, vm_size_t size, uint8_t *pflag, 394 int wait); 395 396 /* 397 * Backend page free routines 398 * 399 * Arguments: 400 * item A pointer to the previously allocated pages. 401 * size The original size of the allocation. 402 * pflag The flags for the slab. See UMA_SLAB_* below. 403 * 404 * Returns: 405 * None 406 */ 407 typedef void (*uma_free)(void *item, vm_size_t size, uint8_t pflag); 408 409 410 411 /* 412 * Sets up the uma allocator. (Called by vm_mem_init) 413 * 414 * Arguments: 415 * bootmem A pointer to memory used to bootstrap the system. 416 * 417 * Returns: 418 * Nothing 419 * 420 * Discussion: 421 * This memory is used for zones which allocate things before the 422 * backend page supplier can give us pages. It should be 423 * UMA_SLAB_SIZE * boot_pages bytes. (see uma_int.h) 424 * 425 */ 426 427 void uma_startup(void *bootmem, int boot_pages); 428 429 /* 430 * Finishes starting up the allocator. This should 431 * be called when kva is ready for normal allocs. 432 * 433 * Arguments: 434 * None 435 * 436 * Returns: 437 * Nothing 438 * 439 * Discussion: 440 * uma_startup2 is called by kmeminit() to enable us of uma for malloc. 441 */ 442 443 void uma_startup2(void); 444 445 /* 446 * Reclaims unused memory for all zones 447 * 448 * Arguments: 449 * None 450 * Returns: 451 * None 452 * 453 * This should only be called by the page out daemon. 454 */ 455 456 void uma_reclaim(void); 457 458 /* 459 * Sets the alignment mask to be used for all zones requesting cache 460 * alignment. Should be called by MD boot code prior to starting VM/UMA. 461 * 462 * Arguments: 463 * align The alignment mask 464 * 465 * Returns: 466 * Nothing 467 */ 468 void uma_set_align(int align); 469 470 /* 471 * Set a reserved number of items to hold for M_USE_RESERVE allocations. All 472 * other requests must allocate new backing pages. 473 */ 474 void uma_zone_reserve(uma_zone_t zone, int nitems); 475 476 /* 477 * Reserves the maximum KVA space required by the zone and configures the zone 478 * to use a VM_ALLOC_NOOBJ-based backend allocator. 479 * 480 * Arguments: 481 * zone The zone to update. 482 * nitems The upper limit on the number of items that can be allocated. 483 * 484 * Returns: 485 * 0 if KVA space can not be allocated 486 * 1 if successful 487 * 488 * Discussion: 489 * When the machine supports a direct map and the zone's items are smaller 490 * than a page, the zone will use the direct map instead of allocating KVA 491 * space. 492 */ 493 int uma_zone_reserve_kva(uma_zone_t zone, int nitems); 494 495 /* 496 * Sets a high limit on the number of items allowed in a zone 497 * 498 * Arguments: 499 * zone The zone to limit 500 * nitems The requested upper limit on the number of items allowed 501 * 502 * Returns: 503 * int The effective value of nitems after rounding up based on page size 504 */ 505 int uma_zone_set_max(uma_zone_t zone, int nitems); 506 507 /* 508 * Obtains the effective limit on the number of items in a zone 509 * 510 * Arguments: 511 * zone The zone to obtain the effective limit from 512 * 513 * Return: 514 * 0 No limit 515 * int The effective limit of the zone 516 */ 517 int uma_zone_get_max(uma_zone_t zone); 518 519 /* 520 * Sets a warning to be printed when limit is reached 521 * 522 * Arguments: 523 * zone The zone we will warn about 524 * warning Warning content 525 * 526 * Returns: 527 * Nothing 528 */ 529 void uma_zone_set_warning(uma_zone_t zone, const char *warning); 530 531 /* 532 * Sets a function to run when limit is reached 533 * 534 * Arguments: 535 * zone The zone to which this applies 536 * fx The function ro run 537 * 538 * Returns: 539 * Nothing 540 */ 541 typedef void (*uma_maxaction_t)(uma_zone_t, int); 542 void uma_zone_set_maxaction(uma_zone_t zone, uma_maxaction_t); 543 544 /* 545 * Obtains the approximate current number of items allocated from a zone 546 * 547 * Arguments: 548 * zone The zone to obtain the current allocation count from 549 * 550 * Return: 551 * int The approximate current number of items allocated from the zone 552 */ 553 int uma_zone_get_cur(uma_zone_t zone); 554 555 /* 556 * The following two routines (uma_zone_set_init/fini) 557 * are used to set the backend init/fini pair which acts on an 558 * object as it becomes allocated and is placed in a slab within 559 * the specified zone's backing keg. These should probably not 560 * be changed once allocations have already begun, but only be set 561 * immediately upon zone creation. 562 */ 563 void uma_zone_set_init(uma_zone_t zone, uma_init uminit); 564 void uma_zone_set_fini(uma_zone_t zone, uma_fini fini); 565 566 /* 567 * The following two routines (uma_zone_set_zinit/zfini) are 568 * used to set the zinit/zfini pair which acts on an object as 569 * it passes from the backing Keg's slab cache to the 570 * specified Zone's bucket cache. These should probably not 571 * be changed once allocations have already begun, but only be set 572 * immediately upon zone creation. 573 */ 574 void uma_zone_set_zinit(uma_zone_t zone, uma_init zinit); 575 void uma_zone_set_zfini(uma_zone_t zone, uma_fini zfini); 576 577 /* 578 * Replaces the standard backend allocator for this zone. 579 * 580 * Arguments: 581 * zone The zone whose backend allocator is being changed. 582 * allocf A pointer to the allocation function 583 * 584 * Returns: 585 * Nothing 586 * 587 * Discussion: 588 * This could be used to implement pageable allocation, or perhaps 589 * even DMA allocators if used in conjunction with the OFFPAGE 590 * zone flag. 591 */ 592 593 void uma_zone_set_allocf(uma_zone_t zone, uma_alloc allocf); 594 595 /* 596 * Used for freeing memory provided by the allocf above 597 * 598 * Arguments: 599 * zone The zone that intends to use this free routine. 600 * freef The page freeing routine. 601 * 602 * Returns: 603 * Nothing 604 */ 605 606 void uma_zone_set_freef(uma_zone_t zone, uma_free freef); 607 608 /* 609 * These flags are setable in the allocf and visible in the freef. 610 */ 611 #define UMA_SLAB_BOOT 0x01 /* Slab alloced from boot pages */ 612 #define UMA_SLAB_KERNEL 0x04 /* Slab alloced from kernel_map */ 613 #define UMA_SLAB_PRIV 0x08 /* Slab alloced from priv allocator */ 614 #define UMA_SLAB_OFFP 0x10 /* Slab is managed separately */ 615 #define UMA_SLAB_MALLOC 0x20 /* Slab is a large malloc slab */ 616 /* 0x02, 0x40 and 0x80 are available */ 617 618 /* 619 * Used to pre-fill a zone with some number of items 620 * 621 * Arguments: 622 * zone The zone to fill 623 * itemcnt The number of items to reserve 624 * 625 * Returns: 626 * Nothing 627 * 628 * NOTE: This is blocking and should only be done at startup 629 */ 630 void uma_prealloc(uma_zone_t zone, int itemcnt); 631 632 /* 633 * Used to determine if a fixed-size zone is exhausted. 634 * 635 * Arguments: 636 * zone The zone to check 637 * 638 * Returns: 639 * Non-zero if zone is exhausted. 640 */ 641 int uma_zone_exhausted(uma_zone_t zone); 642 int uma_zone_exhausted_nolock(uma_zone_t zone); 643 644 /* 645 * Common UMA_ZONE_PCPU zones. 646 */ 647 extern uma_zone_t pcpu_zone_64; 648 extern uma_zone_t pcpu_zone_ptr; 649 650 /* 651 * Exported statistics structures to be used by user space monitoring tools. 652 * Statistics stream consists of a uma_stream_header, followed by a series of 653 * alternative uma_type_header and uma_type_stat structures. 654 */ 655 #define UMA_STREAM_VERSION 0x00000001 656 struct uma_stream_header { 657 uint32_t ush_version; /* Stream format version. */ 658 uint32_t ush_maxcpus; /* Value of MAXCPU for stream. */ 659 uint32_t ush_count; /* Number of records. */ 660 uint32_t _ush_pad; /* Pad/reserved field. */ 661 }; 662 663 #define UTH_MAX_NAME 32 664 #define UTH_ZONE_SECONDARY 0x00000001 665 struct uma_type_header { 666 /* 667 * Static per-zone data, some extracted from the supporting keg. 668 */ 669 char uth_name[UTH_MAX_NAME]; 670 uint32_t uth_align; /* Keg: alignment. */ 671 uint32_t uth_size; /* Keg: requested size of item. */ 672 uint32_t uth_rsize; /* Keg: real size of item. */ 673 uint32_t uth_maxpages; /* Keg: maximum number of pages. */ 674 uint32_t uth_limit; /* Keg: max items to allocate. */ 675 676 /* 677 * Current dynamic zone/keg-derived statistics. 678 */ 679 uint32_t uth_pages; /* Keg: pages allocated. */ 680 uint32_t uth_keg_free; /* Keg: items free. */ 681 uint32_t uth_zone_free; /* Zone: items free. */ 682 uint32_t uth_bucketsize; /* Zone: desired bucket size. */ 683 uint32_t uth_zone_flags; /* Zone: flags. */ 684 uint64_t uth_allocs; /* Zone: number of allocations. */ 685 uint64_t uth_frees; /* Zone: number of frees. */ 686 uint64_t uth_fails; /* Zone: number of alloc failures. */ 687 uint64_t uth_sleeps; /* Zone: number of alloc sleeps. */ 688 uint64_t _uth_reserved1[2]; /* Reserved. */ 689 }; 690 691 struct uma_percpu_stat { 692 uint64_t ups_allocs; /* Cache: number of allocations. */ 693 uint64_t ups_frees; /* Cache: number of frees. */ 694 uint64_t ups_cache_free; /* Cache: free items in cache. */ 695 uint64_t _ups_reserved[5]; /* Reserved. */ 696 }; 697 698 void uma_reclaim_wakeup(void); 699 void uma_reclaim_worker(void *); 700 701 #endif /* _VM_UMA_H_ */ 702