acpi/acpica/uttrack.c

4  * Module Name: uttrack - Memory allocation tracking routines (debug only)
14  * Each memory allocation is tracked via a doubly linked list. Each
32 							    *allocation);
80  * PARAMETERS:  size                - Size of the allocation
94 	struct acpi_debug_mem_block *allocation;
105 	allocation =
107 	if (!allocation) {
109 		/* Report allocation error */
118 	    acpi_ut_track_allocation(allocation, size, ACPI_MEM_MALLOC,
121 		acpi_os_free(allocation);
135 	return ((void *)&allocation->user_space);
142  * PARAMETERS:  size                - Size of the allocation
157 	struct acpi_debug_mem_block *allocation;
168 	allocation =
171 	if (!allocation) {
173 		/* Report allocation error */
180 	status = acpi_ut_track_allocation(allocation, size,
184 		acpi_os_free(allocation);
198 	return ((void *)&allocation->user_space);
205  * PARAMETERS:  allocation          - Address of the memory to deallocate
217 acpi_ut_free_and_track(void *allocation,
223 	ACPI_FUNCTION_TRACE_PTR(ut_free, allocation);
225 	if (NULL == allocation) {
232 				    (((char *)allocation) -
246 			  allocation, debug_block));
254  * PARAMETERS:  allocation              - Address of allocated memory
262  * DESCRIPTION: Searches for an element in the global allocation tracking list.
279 							    *allocation)
292 	 * assumption that a new allocation usually has a larger address
295 	while (element > allocation) {
306 	if (element == allocation) {
317  * PARAMETERS:  allocation          - Address of allocated memory
318  *              size                - Size of the allocation
326  * DESCRIPTION: Inserts an element into the global allocation tracking list.
331 acpi_ut_track_allocation(struct acpi_debug_mem_block *allocation,
340 	ACPI_FUNCTION_TRACE_PTR(ut_track_allocation, allocation);
356 	element = acpi_ut_find_allocation(allocation);
357 	if (element == allocation) {
360 			    allocation));
366 	allocation->size = (u32)size;
367 	allocation->alloc_type = alloc_type;
368 	allocation->component = component;
369 	allocation->line = line;
371 	acpi_ut_safe_strncpy(allocation->module, (char *)module,
380 			    previous = allocation;
383 		allocation->next = mem_list->list_head;
384 		allocation->previous = NULL;
386 		mem_list->list_head = allocation;
390 		allocation->next = element->next;
391 		allocation->previous = element;
394 			(element->next)->previous = allocation;
397 		element->next = allocation;
409  * PARAMETERS:  allocation          - Address of allocated memory
416  * DESCRIPTION: Deletes an element from the global allocation tracking list.
421 acpi_ut_remove_allocation(struct acpi_debug_mem_block *allocation,
439 			    "Empty allocation list, nothing to free!"));
451 	if (allocation->previous) {
452 		(allocation->previous)->next = allocation->next;
454 		mem_list->list_head = allocation->next;
457 	if (allocation->next) {
458 		(allocation->next)->previous = allocation->previous;
462 			  &allocation->user_space, allocation->size));
466 	memset(&allocation->user_space, 0xEA, allocation->size);
554 	 * Walk the allocation list.