drivers/acpi/utilities/utalloc.c

   1 /******************************************************************************
   2  *
   3  * Module Name: utalloc - local cache and memory allocation routines
   4  *
   5  *****************************************************************************/
   6
   7 /*
   8  * Copyright (C) 2000 - 2005, R. Byron Moore
   9  * All rights reserved.
  10  *
  11  * Redistribution and use in source and binary forms, with or without
  12  * modification, are permitted provided that the following conditions
  13  * are met:
  14  * 1. Redistributions of source code must retain the above copyright
  15  *    notice, this list of conditions, and the following disclaimer,
  16  *    without modification.
  17  * 2. Redistributions in binary form must reproduce at minimum a disclaimer
  18  *    substantially similar to the "NO WARRANTY" disclaimer below
  19  *    ("Disclaimer") and any redistribution must be conditioned upon
  20  *    including a substantially similar Disclaimer requirement for further
  21  *    binary redistribution.
  22  * 3. Neither the names of the above-listed copyright holders nor the names
  23  *    of any contributors may be used to endorse or promote products derived
  24  *    from this software without specific prior written permission.
  25  *
  26  * Alternatively, this software may be distributed under the terms of the
  27  * GNU General Public License ("GPL") version 2 as published by the Free
  28  * Software Foundation.
  29  *
  30  * NO WARRANTY
  31  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  32  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  33  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
  34  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  35  * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  36  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  37  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  38  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
  39  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
  40  * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  41  * POSSIBILITY OF SUCH DAMAGES.
  42  */
  43
  44
  45 #include <acpi/acpi.h>
  46
  47 #define _COMPONENT          ACPI_UTILITIES
  48          ACPI_MODULE_NAME    ("utalloc")
  49
  50
  51 /******************************************************************************
  52  *
  53  * FUNCTION:    acpi_ut_release_to_cache
  54  *
  55  * PARAMETERS:  list_id             - Memory list/cache ID
  56  *              Object              - The object to be released
  57  *
  58  * RETURN:      None
  59  *
  60  * DESCRIPTION: Release an object to the specified cache.  If cache is full,
  61  *              the object is deleted.
  62  *
  63  ******************************************************************************/
  64
  65 void
  66 acpi_ut_release_to_cache (
  67         u32                             list_id,
  68         void                            *object)
  69 {
  70         struct acpi_memory_list         *cache_info;
  71
  72
  73         ACPI_FUNCTION_ENTRY ();
  74
  75
  76         cache_info = &acpi_gbl_memory_lists[list_id];
  77
  78 #ifdef ACPI_ENABLE_OBJECT_CACHE
  79
  80         /* If walk cache is full, just free this wallkstate object */
  81
  82         if (cache_info->cache_depth >= cache_info->max_cache_depth) {
  83                 ACPI_MEM_FREE (object);
  84                 ACPI_MEM_TRACKING (cache_info->total_freed++);
  85         }
  86
  87         /* Otherwise put this object back into the cache */
  88
  89         else {
  90                 if (ACPI_FAILURE (acpi_ut_acquire_mutex (ACPI_MTX_CACHES))) {
  91                         return;
  92                 }
  93
  94                 /* Mark the object as cached */
  95
  96                 ACPI_MEMSET (object, 0xCA, cache_info->object_size);
  97                 ACPI_SET_DESCRIPTOR_TYPE (object, ACPI_DESC_TYPE_CACHED);
  98
  99                 /* Put the object at the head of the cache list */
 100
 101                 * (ACPI_CAST_INDIRECT_PTR (char, &(((char *) object)[cache_info->link_offset]))) = cache_info->list_head;
 102                 cache_info->list_head = object;
 103                 cache_info->cache_depth++;
 104
 105                 (void) acpi_ut_release_mutex (ACPI_MTX_CACHES);
 106         }
 107
 108 #else
 109
 110         /* Object cache is disabled; just free the object */
 111
 112         ACPI_MEM_FREE (object);
 113         ACPI_MEM_TRACKING (cache_info->total_freed++);
 114 #endif
 115 }
 116
 117
 118 /******************************************************************************
 119  *
 120  * FUNCTION:    acpi_ut_acquire_from_cache
 121  *
 122  * PARAMETERS:  list_id             - Memory list ID
 123  *
 124  * RETURN:      A requested object.  NULL if the object could not be
 125  *              allocated.
 126  *
 127  * DESCRIPTION: Get an object from the specified cache.  If cache is empty,
 128  *              the object is allocated.
 129  *
 130  ******************************************************************************/
 131
 132 void *
 133 acpi_ut_acquire_from_cache (
 134         u32                             list_id)
 135 {
 136         struct acpi_memory_list         *cache_info;
 137         void                            *object;
 138
 139
 140         ACPI_FUNCTION_NAME ("ut_acquire_from_cache");
 141
 142
 143         cache_info = &acpi_gbl_memory_lists[list_id];
 144
 145 #ifdef ACPI_ENABLE_OBJECT_CACHE
 146
 147         if (ACPI_FAILURE (acpi_ut_acquire_mutex (ACPI_MTX_CACHES))) {
 148                 return (NULL);
 149         }
 150
 151         ACPI_MEM_TRACKING (cache_info->cache_requests++);
 152
 153         /* Check the cache first */
 154
 155         if (cache_info->list_head) {
 156                 /* There is an object available, use it */
 157
 158                 object = cache_info->list_head;
 159                 cache_info->list_head = *(ACPI_CAST_INDIRECT_PTR (char, &(((char *) object)[cache_info->link_offset])));
 160
 161                 ACPI_MEM_TRACKING (cache_info->cache_hits++);
 162                 cache_info->cache_depth--;
 163
 164 #ifdef ACPI_DBG_TRACK_ALLOCATIONS
 165                 ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "Object %p from %s\n",
 166                         object, acpi_gbl_memory_lists[list_id].list_name));
 167 #endif
 168
 169                 if (ACPI_FAILURE (acpi_ut_release_mutex (ACPI_MTX_CACHES))) {
 170                         return (NULL);
 171                 }
 172
 173                 /* Clear (zero) the previously used Object */
 174
 175                 ACPI_MEMSET (object, 0, cache_info->object_size);
 176         }
 177
 178         else {
 179                 /* The cache is empty, create a new object */
 180
 181                 /* Avoid deadlock with ACPI_MEM_CALLOCATE */
 182
 183                 if (ACPI_FAILURE (acpi_ut_release_mutex (ACPI_MTX_CACHES))) {
 184                         return (NULL);
 185                 }
 186
 187                 object = ACPI_MEM_CALLOCATE (cache_info->object_size);
 188                 ACPI_MEM_TRACKING (cache_info->total_allocated++);
 189         }
 190
 191 #else
 192
 193         /* Object cache is disabled; just allocate the object */
 194
 195         object = ACPI_MEM_CALLOCATE (cache_info->object_size);
 196         ACPI_MEM_TRACKING (cache_info->total_allocated++);
 197 #endif
 198
 199         return (object);
 200 }
 201
 202
 203 #ifdef ACPI_ENABLE_OBJECT_CACHE
 204 /******************************************************************************
 205  *
 206  * FUNCTION:    acpi_ut_delete_generic_cache
 207  *
 208  * PARAMETERS:  list_id         - Memory list ID
 209  *
 210  * RETURN:      None
 211  *
 212  * DESCRIPTION: Free all objects within the requested cache.
 213  *
 214  ******************************************************************************/
 215
 216 void
 217 acpi_ut_delete_generic_cache (
 218         u32                             list_id)
 219 {
 220         struct acpi_memory_list         *cache_info;
 221         char                            *next;
 222
 223
 224         ACPI_FUNCTION_ENTRY ();
 225
 226
 227         cache_info = &acpi_gbl_memory_lists[list_id];
 228         while (cache_info->list_head) {
 229                 /* Delete one cached state object */
 230
 231                 next = *(ACPI_CAST_INDIRECT_PTR (char, &(((char *) cache_info->list_head)[cache_info->link_offset])));
 232                 ACPI_MEM_FREE (cache_info->list_head);
 233
 234                 cache_info->list_head = next;
 235                 cache_info->cache_depth--;
 236         }
 237 }
 238 #endif
 239
 240
 241 /*******************************************************************************
 242  *
 243  * FUNCTION:    acpi_ut_validate_buffer
 244  *
 245  * PARAMETERS:  Buffer              - Buffer descriptor to be validated
 246  *
 247  * RETURN:      Status
 248  *
 249  * DESCRIPTION: Perform parameter validation checks on an struct acpi_buffer
 250  *
 251  ******************************************************************************/
 252
 253 acpi_status
 254 acpi_ut_validate_buffer (
 255         struct acpi_buffer              *buffer)
 256 {
 257
 258         /* Obviously, the structure pointer must be valid */
 259
 260         if (!buffer) {
 261                 return (AE_BAD_PARAMETER);
 262         }
 263
 264         /* Special semantics for the length */
 265
 266         if ((buffer->length == ACPI_NO_BUFFER)              ||
 267                 (buffer->length == ACPI_ALLOCATE_BUFFER)        ||
 268                 (buffer->length == ACPI_ALLOCATE_LOCAL_BUFFER)) {
 269                 return (AE_OK);
 270         }
 271
 272         /* Length is valid, the buffer pointer must be also */
 273
 274         if (!buffer->pointer) {
 275                 return (AE_BAD_PARAMETER);
 276         }
 277
 278         return (AE_OK);
 279 }
 280
 281
 282 /*******************************************************************************
 283  *
 284  * FUNCTION:    acpi_ut_initialize_buffer
 285  *
 286  * PARAMETERS:  Buffer              - Buffer to be validated
 287  *              required_length     - Length needed
 288  *
 289  * RETURN:      Status
 290  *
 291  * DESCRIPTION: Validate that the buffer is of the required length or
 292  *              allocate a new buffer.  Returned buffer is always zeroed.
 293  *
 294  ******************************************************************************/
 295
 296 acpi_status
 297 acpi_ut_initialize_buffer (
 298         struct acpi_buffer              *buffer,
 299         acpi_size                       required_length)
 300 {
 301         acpi_status                     status = AE_OK;
 302
 303
 304         switch (buffer->length) {
 305         case ACPI_NO_BUFFER:
 306
 307                 /* Set the exception and returned the required length */
 308
 309                 status = AE_BUFFER_OVERFLOW;
 310                 break;
 311
 312
 313         case ACPI_ALLOCATE_BUFFER:
 314
 315                 /* Allocate a new buffer */
 316
 317                 buffer->pointer = acpi_os_allocate (required_length);
 318                 if (!buffer->pointer) {
 319                         return (AE_NO_MEMORY);
 320                 }
 321
 322                 /* Clear the buffer */
 323
 324                 ACPI_MEMSET (buffer->pointer, 0, required_length);
 325                 break;
 326
 327
 328         case ACPI_ALLOCATE_LOCAL_BUFFER:
 329
 330                 /* Allocate a new buffer with local interface to allow tracking */
 331
 332                 buffer->pointer = ACPI_MEM_CALLOCATE (required_length);
 333                 if (!buffer->pointer) {
 334                         return (AE_NO_MEMORY);
 335                 }
 336                 break;
 337
 338
 339         default:
 340
 341                 /* Existing buffer: Validate the size of the buffer */
 342
 343                 if (buffer->length < required_length) {
 344                         status = AE_BUFFER_OVERFLOW;
 345                         break;
 346                 }
 347
 348                 /* Clear the buffer */
 349
 350                 ACPI_MEMSET (buffer->pointer, 0, required_length);
 351                 break;
 352         }
 353
 354         buffer->length = required_length;
 355         return (status);
 356 }
 357
 358
 359 /*******************************************************************************
 360  *
 361  * FUNCTION:    acpi_ut_allocate
 362  *
 363  * PARAMETERS:  Size                - Size of the allocation
 364  *              Component           - Component type of caller
 365  *              Module              - Source file name of caller
 366  *              Line                - Line number of caller
 367  *
 368  * RETURN:      Address of the allocated memory on success, NULL on failure.
 369  *
 370  * DESCRIPTION: The subsystem's equivalent of malloc.
 371  *
 372  ******************************************************************************/
 373
 374 void *
 375 acpi_ut_allocate (
 376         acpi_size                       size,
 377         u32                             component,
 378         char                            *module,
 379         u32                             line)
 380 {
 381         void                            *allocation;
 382
 383
 384         ACPI_FUNCTION_TRACE_U32 ("ut_allocate", size);
 385
 386
 387         /* Check for an inadvertent size of zero bytes */
 388
 389         if (!size) {
 390                 _ACPI_REPORT_ERROR (module, line, component,
 391                                 ("ut_allocate: Attempt to allocate zero bytes\n"));
 392                 size = 1;
 393         }
 394
 395         allocation = acpi_os_allocate (size);
 396         if (!allocation) {
 397                 /* Report allocation error */
 398
 399                 _ACPI_REPORT_ERROR (module, line, component,
 400                                 ("ut_allocate: Could not allocate size %X\n", (u32) size));
 401
 402                 return_PTR (NULL);
 403         }
 404
 405         return_PTR (allocation);
 406 }
 407
 408
 409 /*******************************************************************************
 410  *
 411  * FUNCTION:    acpi_ut_callocate
 412  *
 413  * PARAMETERS:  Size                - Size of the allocation
 414  *              Component           - Component type of caller
 415  *              Module              - Source file name of caller
 416  *              Line                - Line number of caller
 417  *
 418  * RETURN:      Address of the allocated memory on success, NULL on failure.
 419  *
 420  * DESCRIPTION: Subsystem equivalent of calloc.
 421  *
 422  ******************************************************************************/
 423
 424 void *
 425 acpi_ut_callocate (
 426         acpi_size                       size,
 427         u32                             component,
 428         char                            *module,
 429         u32                             line)
 430 {
 431         void                            *allocation;
 432
 433
 434         ACPI_FUNCTION_TRACE_U32 ("ut_callocate", size);
 435
 436
 437         /* Check for an inadvertent size of zero bytes */
 438
 439         if (!size) {
 440                 _ACPI_REPORT_ERROR (module, line, component,
 441                                 ("ut_callocate: Attempt to allocate zero bytes\n"));
 442                 return_PTR (NULL);
 443         }
 444
 445         allocation = acpi_os_allocate (size);
 446         if (!allocation) {
 447                 /* Report allocation error */
 448
 449                 _ACPI_REPORT_ERROR (module, line, component,
 450                                 ("ut_callocate: Could not allocate size %X\n", (u32) size));
 451                 return_PTR (NULL);
 452         }
 453
 454         /* Clear the memory block */
 455
 456         ACPI_MEMSET (allocation, 0, size);
 457         return_PTR (allocation);
 458 }
 459
 460
 461 #ifdef ACPI_DBG_TRACK_ALLOCATIONS
 462 /*
 463  * These procedures are used for tracking memory leaks in the subsystem, and
 464  * they get compiled out when the ACPI_DBG_TRACK_ALLOCATIONS is not set.
 465  *
 466  * Each memory allocation is tracked via a doubly linked list.  Each
 467  * element contains the caller's component, module name, function name, and
 468  * line number.  acpi_ut_allocate and acpi_ut_callocate call
 469  * acpi_ut_track_allocation to add an element to the list; deletion
 470  * occurs in the body of acpi_ut_free.
 471  */
 472
 473
 474 /*******************************************************************************
 475  *
 476  * FUNCTION:    acpi_ut_allocate_and_track
 477  *
 478  * PARAMETERS:  Size                - Size of the allocation
 479  *              Component           - Component type of caller
 480  *              Module              - Source file name of caller
 481  *              Line                - Line number of caller
 482  *
 483  * RETURN:      Address of the allocated memory on success, NULL on failure.
 484  *
 485  * DESCRIPTION: The subsystem's equivalent of malloc.
 486  *
 487  ******************************************************************************/
 488
 489 void *
 490 acpi_ut_allocate_and_track (
 491         acpi_size                       size,
 492         u32                             component,
 493         char                            *module,
 494         u32                             line)
 495 {
 496         struct acpi_debug_mem_block     *allocation;
 497         acpi_status                     status;
 498
 499
 500         allocation = acpi_ut_allocate (size + sizeof (struct acpi_debug_mem_header), component,
 501                           module, line);
 502         if (!allocation) {
 503                 return (NULL);
 504         }
 505
 506         status = acpi_ut_track_allocation (ACPI_MEM_LIST_GLOBAL, allocation, size,
 507                           ACPI_MEM_MALLOC, component, module, line);
 508         if (ACPI_FAILURE (status)) {
 509                 acpi_os_free (allocation);
 510                 return (NULL);
 511         }
 512
 513         acpi_gbl_memory_lists[ACPI_MEM_LIST_GLOBAL].total_allocated++;
 514         acpi_gbl_memory_lists[ACPI_MEM_LIST_GLOBAL].current_total_size += (u32) size;
 515
 516         return ((void *) &allocation->user_space);
 517 }
 518
 519
 520 /*******************************************************************************
 521  *
 522  * FUNCTION:    acpi_ut_callocate_and_track
 523  *
 524  * PARAMETERS:  Size                - Size of the allocation
 525  *              Component           - Component type of caller
 526  *              Module              - Source file name of caller
 527  *              Line                - Line number of caller
 528  *
 529  * RETURN:      Address of the allocated memory on success, NULL on failure.
 530  *
 531  * DESCRIPTION: Subsystem equivalent of calloc.
 532  *
 533  ******************************************************************************/
 534
 535 void *
 536 acpi_ut_callocate_and_track (
 537         acpi_size                       size,
 538         u32                             component,
 539         char                            *module,
 540         u32                             line)
 541 {
 542         struct acpi_debug_mem_block     *allocation;
 543         acpi_status                     status;
 544
 545
 546         allocation = acpi_ut_callocate (size + sizeof (struct acpi_debug_mem_header), component,
 547                           module, line);
 548         if (!allocation) {
 549                 /* Report allocation error */
 550
 551                 _ACPI_REPORT_ERROR (module, line, component,
 552                                 ("ut_callocate: Could not allocate size %X\n", (u32) size));
 553                 return (NULL);
 554         }
 555
 556         status = acpi_ut_track_allocation (ACPI_MEM_LIST_GLOBAL, allocation, size,
 557                            ACPI_MEM_CALLOC, component, module, line);
 558         if (ACPI_FAILURE (status)) {
 559                 acpi_os_free (allocation);
 560                 return (NULL);
 561         }
 562
 563         acpi_gbl_memory_lists[ACPI_MEM_LIST_GLOBAL].total_allocated++;
 564         acpi_gbl_memory_lists[ACPI_MEM_LIST_GLOBAL].current_total_size += (u32) size;
 565
 566         return ((void *) &allocation->user_space);
 567 }
 568
 569
 570 /*******************************************************************************
 571  *
 572  * FUNCTION:    acpi_ut_free_and_track
 573  *
 574  * PARAMETERS:  Allocation          - Address of the memory to deallocate
 575  *              Component           - Component type of caller
 576  *              Module              - Source file name of caller
 577  *              Line                - Line number of caller
 578  *
 579  * RETURN:      None
 580  *
 581  * DESCRIPTION: Frees the memory at Allocation
 582  *
 583  ******************************************************************************/
 584
 585 void
 586 acpi_ut_free_and_track (
 587         void                            *allocation,
 588         u32                             component,
 589         char                            *module,
 590         u32                             line)
 591 {
 592         struct acpi_debug_mem_block     *debug_block;
 593         acpi_status                     status;
 594
 595
 596         ACPI_FUNCTION_TRACE_PTR ("ut_free", allocation);
 597
 598
 599         if (NULL == allocation) {
 600                 _ACPI_REPORT_ERROR (module, line, component,
 601                         ("acpi_ut_free: Attempt to delete a NULL address\n"));
 602
 603                 return_VOID;
 604         }
 605
 606         debug_block = ACPI_CAST_PTR (struct acpi_debug_mem_block,
 607                           (((char *) allocation) - sizeof (struct acpi_debug_mem_header)));
 608
 609         acpi_gbl_memory_lists[ACPI_MEM_LIST_GLOBAL].total_freed++;
 610         acpi_gbl_memory_lists[ACPI_MEM_LIST_GLOBAL].current_total_size -= debug_block->size;
 611
 612         status = acpi_ut_remove_allocation (ACPI_MEM_LIST_GLOBAL, debug_block,
 613                           component, module, line);
 614         if (ACPI_FAILURE (status)) {
 615                 ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Could not free memory, %s\n",
 616                         acpi_format_exception (status)));
 617         }
 618
 619         acpi_os_free (debug_block);
 620
 621         ACPI_DEBUG_PRINT ((ACPI_DB_ALLOCATIONS, "%p freed\n", allocation));
 622
 623         return_VOID;
 624 }
 625
 626
 627 /*******************************************************************************
 628  *
 629  * FUNCTION:    acpi_ut_find_allocation
 630  *
 631  * PARAMETERS:  list_id                 - Memory list to search
 632  *              Allocation              - Address of allocated memory
 633  *
 634  * RETURN:      A list element if found; NULL otherwise.
 635  *
 636  * DESCRIPTION: Searches for an element in the global allocation tracking list.
 637  *
 638  ******************************************************************************/
 639
 640 struct acpi_debug_mem_block *
 641 acpi_ut_find_allocation (
 642         u32                             list_id,
 643         void                            *allocation)
 644 {
 645         struct acpi_debug_mem_block     *element;
 646
 647
 648         ACPI_FUNCTION_ENTRY ();
 649
 650
 651         if (list_id > ACPI_MEM_LIST_MAX) {
 652                 return (NULL);
 653         }
 654
 655         element = acpi_gbl_memory_lists[list_id].list_head;
 656
 657         /* Search for the address. */
 658
 659         while (element) {
 660                 if (element == allocation) {
 661                         return (element);
 662                 }
 663
 664                 element = element->next;
 665         }
 666
 667         return (NULL);
 668 }
 669
 670
 671 /*******************************************************************************
 672  *
 673  * FUNCTION:    acpi_ut_track_allocation
 674  *
 675  * PARAMETERS:  list_id             - Memory list to search
 676  *              Allocation          - Address of allocated memory
 677  *              Size                - Size of the allocation
 678  *              alloc_type          - MEM_MALLOC or MEM_CALLOC
 679  *              Component           - Component type of caller
 680  *              Module              - Source file name of caller
 681  *              Line                - Line number of caller
 682  *
 683  * RETURN:      None.
 684  *
 685  * DESCRIPTION: Inserts an element into the global allocation tracking list.
 686  *
 687  ******************************************************************************/
 688
 689 acpi_status
 690 acpi_ut_track_allocation (
 691         u32                             list_id,
 692         struct acpi_debug_mem_block     *allocation,
 693         acpi_size                       size,
 694         u8                              alloc_type,
 695         u32                             component,
 696         char                            *module,
 697         u32                             line)
 698 {
 699         struct acpi_memory_list         *mem_list;
 700         struct acpi_debug_mem_block     *element;
 701         acpi_status                     status = AE_OK;
 702
 703
 704         ACPI_FUNCTION_TRACE_PTR ("ut_track_allocation", allocation);
 705
 706
 707         if (list_id > ACPI_MEM_LIST_MAX) {
 708                 return_ACPI_STATUS (AE_BAD_PARAMETER);
 709         }
 710
 711         mem_list = &acpi_gbl_memory_lists[list_id];
 712         status = acpi_ut_acquire_mutex (ACPI_MTX_MEMORY);
 713         if (ACPI_FAILURE (status)) {
 714                 return_ACPI_STATUS (status);
 715         }
 716
 717         /*
 718          * Search list for this address to make sure it is not already on the list.
 719          * This will catch several kinds of problems.
 720          */
 721
 722         element = acpi_ut_find_allocation (list_id, allocation);
 723         if (element) {
 724                 ACPI_REPORT_ERROR (("ut_track_allocation: Allocation already present in list! (%p)\n",
 725                         allocation));
 726
 727                 ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Element %p Address %p\n", element, allocation));
 728
 729                 goto unlock_and_exit;
 730         }
 731
 732         /* Fill in the instance data. */
 733
 734         allocation->size      = (u32) size;
 735         allocation->alloc_type = alloc_type;
 736         allocation->component = component;
 737         allocation->line      = line;
 738
 739         ACPI_STRNCPY (allocation->module, module, ACPI_MAX_MODULE_NAME);
 740         allocation->module[ACPI_MAX_MODULE_NAME-1] = 0;
 741
 742         /* Insert at list head */
 743
 744         if (mem_list->list_head) {
 745                 ((struct acpi_debug_mem_block *)(mem_list->list_head))->previous = allocation;
 746         }
 747
 748         allocation->next = mem_list->list_head;
 749         allocation->previous = NULL;
 750
 751         mem_list->list_head = allocation;
 752
 753
 754 unlock_and_exit:
 755         status = acpi_ut_release_mutex (ACPI_MTX_MEMORY);
 756         return_ACPI_STATUS (status);
 757 }
 758
 759
 760 /*******************************************************************************
 761  *
 762  * FUNCTION:    acpi_ut_remove_allocation
 763  *
 764  * PARAMETERS:  list_id             - Memory list to search
 765  *              Allocation          - Address of allocated memory
 766  *              Component           - Component type of caller
 767  *              Module              - Source file name of caller
 768  *              Line                - Line number of caller
 769  *
 770  * RETURN:
 771  *
 772  * DESCRIPTION: Deletes an element from the global allocation tracking list.
 773  *
 774  ******************************************************************************/
 775
 776 acpi_status
 777 acpi_ut_remove_allocation (
 778         u32                             list_id,
 779         struct acpi_debug_mem_block     *allocation,
 780         u32                             component,
 781         char                            *module,
 782         u32                             line)
 783 {
 784         struct acpi_memory_list         *mem_list;
 785         acpi_status                     status;
 786
 787
 788         ACPI_FUNCTION_TRACE ("ut_remove_allocation");
 789
 790
 791         if (list_id > ACPI_MEM_LIST_MAX) {
 792                 return_ACPI_STATUS (AE_BAD_PARAMETER);
 793         }
 794
 795         mem_list = &acpi_gbl_memory_lists[list_id];
 796         if (NULL == mem_list->list_head) {
 797                 /* No allocations! */
 798
 799                 _ACPI_REPORT_ERROR (module, line, component,
 800                                 ("ut_remove_allocation: Empty allocation list, nothing to free!\n"));
 801
 802                 return_ACPI_STATUS (AE_OK);
 803         }
 804
 805         status = acpi_ut_acquire_mutex (ACPI_MTX_MEMORY);
 806         if (ACPI_FAILURE (status)) {
 807                 return_ACPI_STATUS (status);
 808         }
 809
 810         /* Unlink */
 811
 812         if (allocation->previous) {
 813                 (allocation->previous)->next = allocation->next;
 814         }
 815         else {
 816                 mem_list->list_head = allocation->next;
 817         }
 818
 819         if (allocation->next) {
 820                 (allocation->next)->previous = allocation->previous;
 821         }
 822
 823         /* Mark the segment as deleted */
 824
 825         ACPI_MEMSET (&allocation->user_space, 0xEA, allocation->size);
 826
 827         ACPI_DEBUG_PRINT ((ACPI_DB_ALLOCATIONS, "Freeing size 0%X\n", allocation->size));
 828
 829         status = acpi_ut_release_mutex (ACPI_MTX_MEMORY);
 830         return_ACPI_STATUS (status);
 831 }
 832
 833
 834 /*******************************************************************************
 835  *
 836  * FUNCTION:    acpi_ut_dump_allocation_info
 837  *
 838  * PARAMETERS:
 839  *
 840  * RETURN:      None
 841  *
 842  * DESCRIPTION: Print some info about the outstanding allocations.
 843  *
 844  ******************************************************************************/
 845 #ifdef ACPI_FUTURE_USAGE
 846 void
 847 acpi_ut_dump_allocation_info (
 848         void)
 849 {
 850 /*
 851         struct acpi_memory_list         *mem_list;
 852 */
 853
 854         ACPI_FUNCTION_TRACE ("ut_dump_allocation_info");
 855
 856 /*
 857         ACPI_DEBUG_PRINT (TRACE_ALLOCATIONS | TRACE_TABLES,
 858                           ("%30s: %4d (%3d Kb)\n", "Current allocations",
 859                           mem_list->current_count,
 860                           ROUND_UP_TO_1K (mem_list->current_size)));
 861
 862         ACPI_DEBUG_PRINT (TRACE_ALLOCATIONS | TRACE_TABLES,
 863                           ("%30s: %4d (%3d Kb)\n", "Max concurrent allocations",
 864                           mem_list->max_concurrent_count,
 865                           ROUND_UP_TO_1K (mem_list->max_concurrent_size)));
 866
 867
 868         ACPI_DEBUG_PRINT (TRACE_ALLOCATIONS | TRACE_TABLES,
 869                           ("%30s: %4d (%3d Kb)\n", "Total (all) internal objects",
 870                           running_object_count,
 871                           ROUND_UP_TO_1K (running_object_size)));
 872
 873         ACPI_DEBUG_PRINT (TRACE_ALLOCATIONS | TRACE_TABLES,
 874                           ("%30s: %4d (%3d Kb)\n", "Total (all) allocations",
 875                           running_alloc_count,
 876                           ROUND_UP_TO_1K (running_alloc_size)));
 877
 878
 879         ACPI_DEBUG_PRINT (TRACE_ALLOCATIONS | TRACE_TABLES,
 880                           ("%30s: %4d (%3d Kb)\n", "Current Nodes",
 881                           acpi_gbl_current_node_count,
 882                           ROUND_UP_TO_1K (acpi_gbl_current_node_size)));
 883
 884         ACPI_DEBUG_PRINT (TRACE_ALLOCATIONS | TRACE_TABLES,
 885                           ("%30s: %4d (%3d Kb)\n", "Max Nodes",
 886                           acpi_gbl_max_concurrent_node_count,
 887                           ROUND_UP_TO_1K ((acpi_gbl_max_concurrent_node_count * sizeof (struct acpi_namespace_node)))));
 888 */
 889         return_VOID;
 890 }
 891 #endif  /*  ACPI_FUTURE_USAGE  */
 892
 893
 894 /*******************************************************************************
 895  *
 896  * FUNCTION:    acpi_ut_dump_allocations
 897  *
 898  * PARAMETERS:  Component           - Component(s) to dump info for.
 899  *              Module              - Module to dump info for.  NULL means all.
 900  *
 901  * RETURN:      None
 902  *
 903  * DESCRIPTION: Print a list of all outstanding allocations.
 904  *
 905  ******************************************************************************/
 906
 907 void
 908 acpi_ut_dump_allocations (
 909         u32                             component,
 910         char                            *module)
 911 {
 912         struct acpi_debug_mem_block     *element;
 913         union acpi_descriptor           *descriptor;
 914         u32                             num_outstanding = 0;
 915
 916
 917         ACPI_FUNCTION_TRACE ("ut_dump_allocations");
 918
 919
 920         /*
 921          * Walk the allocation list.
 922          */
 923         if (ACPI_FAILURE (acpi_ut_acquire_mutex (ACPI_MTX_MEMORY))) {
 924                 return;
 925         }
 926
 927         element = acpi_gbl_memory_lists[0].list_head;
 928         while (element) {
 929                 if ((element->component & component) &&
 930                         ((module == NULL) || (0 == ACPI_STRCMP (module, element->module)))) {
 931                         /* Ignore allocated objects that are in a cache */
 932
 933                         descriptor = ACPI_CAST_PTR (union acpi_descriptor, &element->user_space);
 934                         if (descriptor->descriptor_id != ACPI_DESC_TYPE_CACHED) {
 935                                 acpi_os_printf ("%p Len %04X %9.9s-%d [%s] ",
 936                                                  descriptor, element->size, element->module,
 937                                                  element->line, acpi_ut_get_descriptor_name (descriptor));
 938
 939                                 /* Most of the elements will be Operand objects. */
 940
 941                                 switch (ACPI_GET_DESCRIPTOR_TYPE (descriptor)) {
 942                                 case ACPI_DESC_TYPE_OPERAND:
 943                                         acpi_os_printf ("%12.12s R%hd",
 944                                                         acpi_ut_get_type_name (descriptor->object.common.type),
 945                                                         descriptor->object.common.reference_count);
 946                                         break;
 947
 948                                 case ACPI_DESC_TYPE_PARSER:
 949                                         acpi_os_printf ("aml_opcode %04hX",
 950                                                         descriptor->op.asl.aml_opcode);
 951                                         break;
 952
 953                                 case ACPI_DESC_TYPE_NAMED:
 954                                         acpi_os_printf ("%4.4s",
 955                                                         acpi_ut_get_node_name (&descriptor->node));
 956                                         break;
 957
 958                                 default:
 959                                         break;
 960                                 }
 961
 962                                 acpi_os_printf ( "\n");
 963                                 num_outstanding++;
 964                         }
 965                 }
 966                 element = element->next;
 967         }
 968
 969         (void) acpi_ut_release_mutex (ACPI_MTX_MEMORY);
 970
 971         /* Print summary */
 972
 973         if (!num_outstanding) {
 974                 ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
 975                         "No outstanding allocations.\n"));
 976         }
 977         else {
 978                 ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
 979                         "%d(%X) Outstanding allocations\n",
 980                         num_outstanding, num_outstanding));
 981         }
 982
 983         return_VOID;
 984 }
 985
 986
 987 #endif  /* #ifdef ACPI_DBG_TRACK_ALLOCATIONS */
 988