utalloc.c

linux-2.6.15.6

		return (NULL);
	}

	status = acpi_ut_track_allocation(allocation, size,
					  ACPI_MEM_MALLOC, component, module,
					  line);
	if (ACPI_FAILURE(status)) {
		acpi_os_free(allocation);
		return (NULL);
	}

	acpi_gbl_global_list->total_allocated++;
	acpi_gbl_global_list->current_total_size += (u32) size;

	return ((void *)&allocation->user_space);
}

/*******************************************************************************
 *
 * FUNCTION:    acpi_ut_callocate_and_track
 *
 * PARAMETERS:  Size                - Size of the allocation
 *              Component           - Component type of caller
 *              Module              - Source file name of caller
 *              Line                - Line number of caller
 *
 * RETURN:      Address of the allocated memory on success, NULL on failure.
 *
 * DESCRIPTION: Subsystem equivalent of calloc.
 *
 ******************************************************************************/

void *acpi_ut_callocate_and_track(acpi_size size,
				  u32 component, char *module, u32 line)
{
	struct acpi_debug_mem_block *allocation;
	acpi_status status;

	allocation =
	    acpi_ut_callocate(size + sizeof(struct acpi_debug_mem_header),
			      component, module, line);
	if (!allocation) {
		/* Report allocation error */

		_ACPI_REPORT_ERROR(module, line, component,
				   ("ut_callocate: Could not allocate size %X\n",
				    (u32) size));
		return (NULL);
	}

	status = acpi_ut_track_allocation(allocation, size,
					  ACPI_MEM_CALLOC, component, module,
					  line);
	if (ACPI_FAILURE(status)) {
		acpi_os_free(allocation);
		return (NULL);
	}

	acpi_gbl_global_list->total_allocated++;
	acpi_gbl_global_list->current_total_size += (u32) size;

	return ((void *)&allocation->user_space);
}

/*******************************************************************************
 *
 * FUNCTION:    acpi_ut_free_and_track
 *
 * PARAMETERS:  Allocation          - Address of the memory to deallocate
 *              Component           - Component type of caller
 *              Module              - Source file name of caller
 *              Line                - Line number of caller
 *
 * RETURN:      None
 *
 * DESCRIPTION: Frees the memory at Allocation
 *
 ******************************************************************************/

void
acpi_ut_free_and_track(void *allocation, u32 component, char *module, u32 line)
{
	struct acpi_debug_mem_block *debug_block;
	acpi_status status;

	ACPI_FUNCTION_TRACE_PTR("ut_free", allocation);

	if (NULL == allocation) {
		_ACPI_REPORT_ERROR(module, line, component,
				   ("acpi_ut_free: Attempt to delete a NULL address\n"));

		return_VOID;
	}

	debug_block = ACPI_CAST_PTR(struct acpi_debug_mem_block,
				    (((char *)allocation) -
				     sizeof(struct acpi_debug_mem_header)));

	acpi_gbl_global_list->total_freed++;
	acpi_gbl_global_list->current_total_size -= debug_block->size;

	status = acpi_ut_remove_allocation(debug_block,
					   component, module, line);
	if (ACPI_FAILURE(status)) {
		ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "Could not free memory, %s\n",
				  acpi_format_exception(status)));
	}

	acpi_os_free(debug_block);

	ACPI_DEBUG_PRINT((ACPI_DB_ALLOCATIONS, "%p freed\n", allocation));

	return_VOID;
}

/*******************************************************************************
 *
 * FUNCTION:    acpi_ut_find_allocation
 *
 * PARAMETERS:  Allocation              - Address of allocated memory
 *
 * RETURN:      A list element if found; NULL otherwise.
 *
 * DESCRIPTION: Searches for an element in the global allocation tracking list.
 *
 ******************************************************************************/

static struct acpi_debug_mem_block *acpi_ut_find_allocation(void *allocation)
{
	struct acpi_debug_mem_block *element;

	ACPI_FUNCTION_ENTRY();

	element = acpi_gbl_global_list->list_head;

	/* Search for the address. */

	while (element) {
		if (element == allocation) {
			return (element);
		}

		element = element->next;
	}

	return (NULL);
}

/*******************************************************************************
 *
 * FUNCTION:    acpi_ut_track_allocation
 *
 * PARAMETERS:  Allocation          - Address of allocated memory
 *              Size                - Size of the allocation
 *              alloc_type          - MEM_MALLOC or MEM_CALLOC
 *              Component           - Component type of caller
 *              Module              - Source file name of caller
 *              Line                - Line number of caller
 *
 * RETURN:      None.
 *
 * DESCRIPTION: Inserts an element into the global allocation tracking list.
 *
 ******************************************************************************/

static acpi_status
acpi_ut_track_allocation(struct acpi_debug_mem_block *allocation,
			 acpi_size size,
			 u8 alloc_type, u32 component, char *module, u32 line)
{
	struct acpi_memory_list *mem_list;
	struct acpi_debug_mem_block *element;
	acpi_status status = AE_OK;

	ACPI_FUNCTION_TRACE_PTR("ut_track_allocation", allocation);

	mem_list = acpi_gbl_global_list;
	status = acpi_ut_acquire_mutex(ACPI_MTX_MEMORY);
	if (ACPI_FAILURE(status)) {
		return_ACPI_STATUS(status);
	}

	/*
	 * Search list for this address to make sure it is not already on the list.
	 * This will catch several kinds of problems.
	 */
	element = acpi_ut_find_allocation(allocation);
	if (element) {
		ACPI_REPORT_ERROR(("ut_track_allocation: Allocation already present in list! (%p)\n", allocation));

		ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "Element %p Address %p\n",
				  element, allocation));

		goto unlock_and_exit;
	}

	/* Fill in the instance data. */

	allocation->size = (u32) size;
	allocation->alloc_type = alloc_type;
	allocation->component = component;
	allocation->line = line;

	ACPI_STRNCPY(allocation->module, module, ACPI_MAX_MODULE_NAME);
	allocation->module[ACPI_MAX_MODULE_NAME - 1] = 0;

	/* Insert at list head */

	if (mem_list->list_head) {
		((struct acpi_debug_mem_block *)(mem_list->list_head))->
		    previous = allocation;
	}

	allocation->next = mem_list->list_head;
	allocation->previous = NULL;

	mem_list->list_head = allocation;

      unlock_and_exit:
	status = acpi_ut_release_mutex(ACPI_MTX_MEMORY);
	return_ACPI_STATUS(status);
}

/*******************************************************************************
 *
 * FUNCTION:    acpi_ut_remove_allocation
 *
 * PARAMETERS:  Allocation          - Address of allocated memory
 *              Component           - Component type of caller
 *              Module              - Source file name of caller
 *              Line                - Line number of caller
 *
 * RETURN:
 *
 * DESCRIPTION: Deletes an element from the global allocation tracking list.
 *
 ******************************************************************************/

static acpi_status
acpi_ut_remove_allocation(struct acpi_debug_mem_block *allocation,
			  u32 component, char *module, u32 line)
{
	struct acpi_memory_list *mem_list;
	acpi_status status;

	ACPI_FUNCTION_TRACE("ut_remove_allocation");

	mem_list = acpi_gbl_global_list;
	if (NULL == mem_list->list_head) {
		/* No allocations! */

		_ACPI_REPORT_ERROR(module, line, component,
				   ("ut_remove_allocation: Empty allocation list, nothing to free!\n"));

		return_ACPI_STATUS(AE_OK);
	}

	status = acpi_ut_acquire_mutex(ACPI_MTX_MEMORY);
	if (ACPI_FAILURE(status)) {
		return_ACPI_STATUS(status);
	}

	/* Unlink */

	if (allocation->previous) {
		(allocation->previous)->next = allocation->next;
	} else {
		mem_list->list_head = allocation->next;
	}

	if (allocation->next) {
		(allocation->next)->previous = allocation->previous;
	}

	/* Mark the segment as deleted */

	ACPI_MEMSET(&allocation->user_space, 0xEA, allocation->size);

	ACPI_DEBUG_PRINT((ACPI_DB_ALLOCATIONS, "Freeing size 0%X\n",
			  allocation->size));

	status = acpi_ut_release_mutex(ACPI_MTX_MEMORY);
	return_ACPI_STATUS(status);
}

/*******************************************************************************
 *
 * FUNCTION:    acpi_ut_dump_allocation_info
 *
 * PARAMETERS:
 *
 * RETURN:      None
 *
 * DESCRIPTION: Print some info about the outstanding allocations.
 *
 ******************************************************************************/

#ifdef ACPI_FUTURE_USAGE
void acpi_ut_dump_allocation_info(void)
{
/*
	struct acpi_memory_list         *mem_list;
*/

	ACPI_FUNCTION_TRACE("ut_dump_allocation_info");

/*
	ACPI_DEBUG_PRINT (TRACE_ALLOCATIONS | TRACE_TABLES,
			  ("%30s: %4d (%3d Kb)\n", "Current allocations",
			  mem_list->current_count,
			  ROUND_UP_TO_1K (mem_list->current_size)));

	ACPI_DEBUG_PRINT (TRACE_ALLOCATIONS | TRACE_TABLES,
			  ("%30s: %4d (%3d Kb)\n", "Max concurrent allocations",
			  mem_list->max_concurrent_count,
			  ROUND_UP_TO_1K (mem_list->max_concurrent_size)));

	ACPI_DEBUG_PRINT (TRACE_ALLOCATIONS | TRACE_TABLES,
			  ("%30s: %4d (%3d Kb)\n", "Total (all) internal objects",
			  running_object_count,
			  ROUND_UP_TO_1K (running_object_size)));

	ACPI_DEBUG_PRINT (TRACE_ALLOCATIONS | TRACE_TABLES,
			  ("%30s: %4d (%3d Kb)\n", "Total (all) allocations",
			  running_alloc_count,
			  ROUND_UP_TO_1K (running_alloc_size)));

	ACPI_DEBUG_PRINT (TRACE_ALLOCATIONS | TRACE_TABLES,
			  ("%30s: %4d (%3d Kb)\n", "Current Nodes",
			  acpi_gbl_current_node_count,
			  ROUND_UP_TO_1K (acpi_gbl_current_node_size)));

	ACPI_DEBUG_PRINT (TRACE_ALLOCATIONS | TRACE_TABLES,
			  ("%30s: %4d (%3d Kb)\n", "Max Nodes",
			  acpi_gbl_max_concurrent_node_count,
			  ROUND_UP_TO_1K ((acpi_gbl_max_concurrent_node_count *
					 sizeof (struct acpi_namespace_node)))));
*/
	return_VOID;
}
#endif				/*  ACPI_FUTURE_USAGE  */

/*******************************************************************************
 *
 * FUNCTION:    acpi_ut_dump_allocations
 *
 * PARAMETERS:  Component           - Component(s) to dump info for.
 *              Module              - Module to dump info for.  NULL means all.
 *
 * RETURN:      None
 *
 * DESCRIPTION: Print a list of all outstanding allocations.
 *
 ******************************************************************************/

void acpi_ut_dump_allocations(u32 component, char *module)
{
	struct acpi_debug_mem_block *element;
	union acpi_descriptor *descriptor;
	u32 num_outstanding = 0;

	ACPI_FUNCTION_TRACE("ut_dump_allocations");

	/*
	 * Walk the allocation list.
	 */
	if (ACPI_FAILURE(acpi_ut_acquire_mutex(ACPI_MTX_MEMORY))) {
		return;
	}

	element = acpi_gbl_global_list->list_head;
	while (element) {
		if ((element->component & component) &&
		    ((module == NULL)
		     || (0 == ACPI_STRCMP(module, element->module)))) {
			/* Ignore allocated objects that are in a cache */

			descriptor =
			    ACPI_CAST_PTR(union acpi_descriptor,
					  &element->user_space);
			if (descriptor->descriptor_id != ACPI_DESC_TYPE_CACHED) {
				acpi_os_printf("%p Len %04X %9.9s-%d [%s] ",
					       descriptor, element->size,
					       element->module, element->line,
					       acpi_ut_get_descriptor_name
					       (descriptor));

				/* Most of the elements will be Operand objects. */

				switch (ACPI_GET_DESCRIPTOR_TYPE(descriptor)) {
				case ACPI_DESC_TYPE_OPERAND:
					acpi_os_printf("%12.12s R%hd",
						       acpi_ut_get_type_name
						       (descriptor->object.
							common.type),
						       descriptor->object.
						       common.reference_count);
					break;

				case ACPI_DESC_TYPE_PARSER:
					acpi_os_printf("aml_opcode %04hX",
						       descriptor->op.asl.
						       aml_opcode);
					break;

				case ACPI_DESC_TYPE_NAMED:
					acpi_os_printf("%4.4s",
						       acpi_ut_get_node_name
						       (&descriptor->node));
					break;

				default:
					break;
				}

				acpi_os_printf("\n");
				num_outstanding++;
			}
		}
		element = element->next;
	}

	(void)acpi_ut_release_mutex(ACPI_MTX_MEMORY);

	/* Print summary */

	if (!num_outstanding) {
		ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
				  "No outstanding allocations.\n"));
	} else {
		ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
				  "%d(%X) Outstanding allocations\n",
				  num_outstanding, num_outstanding));
	}

	return_VOID;
}

#endif				/* #ifdef ACPI_DBG_TRACK_ALLOCATIONS */