v4.19.13 snapshot.
diff --git a/drivers/acpi/acpica/uttrack.c b/drivers/acpi/acpica/uttrack.c
new file mode 100644
index 0000000..016a662
--- /dev/null
+++ b/drivers/acpi/acpica/uttrack.c
@@ -0,0 +1,693 @@
+// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
+/******************************************************************************
+ *
+ * Module Name: uttrack - Memory allocation tracking routines (debug only)
+ *
+ * Copyright (C) 2000 - 2018, Intel Corp.
+ *
+ *****************************************************************************/
+
+/*
+ * These procedures are used for tracking memory leaks in the subsystem, and
+ * they get compiled out when the ACPI_DBG_TRACK_ALLOCATIONS is not set.
+ *
+ * Each memory allocation is tracked via a doubly linked list. Each
+ * element contains the caller's component, module name, function name, and
+ * line number. acpi_ut_allocate and acpi_ut_allocate_zeroed call
+ * acpi_ut_track_allocation to add an element to the list; deletion
+ * occurs in the body of acpi_ut_free.
+ */
+
+#include <acpi/acpi.h>
+#include "accommon.h"
+
+#ifdef ACPI_DBG_TRACK_ALLOCATIONS
+
+#define _COMPONENT ACPI_UTILITIES
+ACPI_MODULE_NAME("uttrack")
+
+/* Local prototypes */
+static struct acpi_debug_mem_block *acpi_ut_find_allocation(struct
+ acpi_debug_mem_block
+ *allocation);
+
+static acpi_status
+acpi_ut_track_allocation(struct acpi_debug_mem_block *address,
+ acpi_size size,
+ u8 alloc_type,
+ u32 component, const char *module, u32 line);
+
+static acpi_status
+acpi_ut_remove_allocation(struct acpi_debug_mem_block *address,
+ u32 component, const char *module, u32 line);
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_ut_create_list
+ *
+ * PARAMETERS: cache_name - Ascii name for the cache
+ * object_size - Size of each cached object
+ * return_cache - Where the new cache object is returned
+ *
+ * RETURN: Status
+ *
+ * DESCRIPTION: Create a local memory list for tracking purposed
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_ut_create_list(const char *list_name,
+ u16 object_size, struct acpi_memory_list **return_cache)
+{
+ struct acpi_memory_list *cache;
+
+ cache = acpi_os_allocate_zeroed(sizeof(struct acpi_memory_list));
+ if (!cache) {
+ return (AE_NO_MEMORY);
+ }
+
+ cache->list_name = list_name;
+ cache->object_size = object_size;
+
+ *return_cache = cache;
+ return (AE_OK);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_ut_allocate_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: The subsystem's equivalent of malloc.
+ *
+ ******************************************************************************/
+
+void *acpi_ut_allocate_and_track(acpi_size size,
+ u32 component, const char *module, u32 line)
+{
+ struct acpi_debug_mem_block *allocation;
+ acpi_status status;
+
+ /* Check for an inadvertent size of zero bytes */
+
+ if (!size) {
+ ACPI_WARNING((module, line,
+ "Attempt to allocate zero bytes, allocating 1 byte"));
+ size = 1;
+ }
+
+ allocation =
+ acpi_os_allocate(size + sizeof(struct acpi_debug_mem_header));
+ if (!allocation) {
+
+ /* Report allocation error */
+
+ ACPI_WARNING((module, line,
+ "Could not allocate size %u", (u32)size));
+
+ 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->total_size += (u32)size;
+ acpi_gbl_global_list->current_total_size += (u32)size;
+
+ if (acpi_gbl_global_list->current_total_size >
+ acpi_gbl_global_list->max_occupied) {
+ acpi_gbl_global_list->max_occupied =
+ acpi_gbl_global_list->current_total_size;
+ }
+
+ return ((void *)&allocation->user_space);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_ut_allocate_zeroed_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_allocate_zeroed_and_track(acpi_size size,
+ u32 component,
+ const char *module, u32 line)
+{
+ struct acpi_debug_mem_block *allocation;
+ acpi_status status;
+
+ /* Check for an inadvertent size of zero bytes */
+
+ if (!size) {
+ ACPI_WARNING((module, line,
+ "Attempt to allocate zero bytes, allocating 1 byte"));
+ size = 1;
+ }
+
+ allocation =
+ acpi_os_allocate_zeroed(size +
+ sizeof(struct acpi_debug_mem_header));
+ if (!allocation) {
+
+ /* Report allocation error */
+
+ ACPI_ERROR((module, line,
+ "Could not allocate size %u", (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->total_size += (u32)size;
+ acpi_gbl_global_list->current_total_size += (u32)size;
+
+ if (acpi_gbl_global_list->current_total_size >
+ acpi_gbl_global_list->max_occupied) {
+ acpi_gbl_global_list->max_occupied =
+ acpi_gbl_global_list->current_total_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, const 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_ERROR((module, line, "Attempt to delete a NULL address"));
+
+ 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_EXCEPTION((AE_INFO, status, "Could not free memory"));
+ }
+
+ acpi_os_free(debug_block);
+ ACPI_DEBUG_PRINT((ACPI_DB_ALLOCATIONS, "%p freed (block %p)\n",
+ allocation, debug_block));
+ return_VOID;
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_ut_find_allocation
+ *
+ * PARAMETERS: allocation - Address of allocated memory
+ *
+ * RETURN: Three cases:
+ * 1) List is empty, NULL is returned.
+ * 2) Element was found. Returns Allocation parameter.
+ * 3) Element was not found. Returns position where it should be
+ * inserted into the list.
+ *
+ * DESCRIPTION: Searches for an element in the global allocation tracking list.
+ * If the element is not found, returns the location within the
+ * list where the element should be inserted.
+ *
+ * Note: The list is ordered by larger-to-smaller addresses.
+ *
+ * This global list is used to detect memory leaks in ACPICA as
+ * well as other issues such as an attempt to release the same
+ * internal object more than once. Although expensive as far
+ * as cpu time, this list is much more helpful for finding these
+ * types of issues than using memory leak detectors outside of
+ * the ACPICA code.
+ *
+ ******************************************************************************/
+
+static struct acpi_debug_mem_block *acpi_ut_find_allocation(struct
+ acpi_debug_mem_block
+ *allocation)
+{
+ struct acpi_debug_mem_block *element;
+
+ element = acpi_gbl_global_list->list_head;
+ if (!element) {
+ return (NULL);
+ }
+
+ /*
+ * Search for the address.
+ *
+ * Note: List is ordered by larger-to-smaller addresses, on the
+ * assumption that a new allocation usually has a larger address
+ * than previous allocations.
+ */
+ while (element > allocation) {
+
+ /* Check for end-of-list */
+
+ if (!element->next) {
+ return (element);
+ }
+
+ element = element->next;
+ }
+
+ if (element == allocation) {
+ return (element);
+ }
+
+ return (element->previous);
+}
+
+/*******************************************************************************
+ *
+ * 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: Status
+ *
+ * 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, const 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);
+
+ if (acpi_gbl_disable_mem_tracking) {
+ return_ACPI_STATUS(AE_OK);
+ }
+
+ mem_list = acpi_gbl_global_list;
+ status = acpi_ut_acquire_mutex(ACPI_MTX_MEMORY);
+ if (ACPI_FAILURE(status)) {
+ return_ACPI_STATUS(status);
+ }
+
+ /*
+ * Search the global list for this address to make sure it is not
+ * already present. This will catch several kinds of problems.
+ */
+ element = acpi_ut_find_allocation(allocation);
+ if (element == allocation) {
+ ACPI_ERROR((AE_INFO,
+ "UtTrackAllocation: Allocation (%p) already present in global list!",
+ 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_ut_safe_strncpy(allocation->module, (char *)module,
+ ACPI_MAX_MODULE_NAME);
+
+ if (!element) {
+
+ /* 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;
+ } else {
+ /* Insert after element */
+
+ allocation->next = element->next;
+ allocation->previous = element;
+
+ if (element->next) {
+ (element->next)->previous = allocation;
+ }
+
+ element->next = 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: Status
+ *
+ * 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, const char *module, u32 line)
+{
+ struct acpi_memory_list *mem_list;
+ acpi_status status;
+
+ ACPI_FUNCTION_NAME(ut_remove_allocation);
+
+ if (acpi_gbl_disable_mem_tracking) {
+ return (AE_OK);
+ }
+
+ mem_list = acpi_gbl_global_list;
+ if (NULL == mem_list->list_head) {
+
+ /* No allocations! */
+
+ ACPI_ERROR((module, line,
+ "Empty allocation list, nothing to free!"));
+
+ return (AE_OK);
+ }
+
+ status = acpi_ut_acquire_mutex(ACPI_MTX_MEMORY);
+ if (ACPI_FAILURE(status)) {
+ return (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;
+ }
+
+ ACPI_DEBUG_PRINT((ACPI_DB_ALLOCATIONS, "Freeing %p, size 0%X\n",
+ &allocation->user_space, allocation->size));
+
+ /* Mark the segment as deleted */
+
+ memset(&allocation->user_space, 0xEA, allocation->size);
+
+ status = acpi_ut_release_mutex(ACPI_MTX_MEMORY);
+ return (status);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_ut_dump_allocation_info
+ *
+ * PARAMETERS: None
+ *
+ * RETURN: None
+ *
+ * DESCRIPTION: Print some info about the outstanding allocations.
+ *
+ ******************************************************************************/
+
+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;
+}
+
+/*******************************************************************************
+ *
+ * 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, const char *module)
+{
+ struct acpi_debug_mem_block *element;
+ union acpi_descriptor *descriptor;
+ u32 num_outstanding = 0;
+ u8 descriptor_type;
+
+ ACPI_FUNCTION_TRACE(ut_dump_allocations);
+
+ if (acpi_gbl_disable_mem_tracking) {
+ return_VOID;
+ }
+
+ /*
+ * Walk the allocation list.
+ */
+ if (ACPI_FAILURE(acpi_ut_acquire_mutex(ACPI_MTX_MEMORY))) {
+ return_VOID;
+ }
+
+ if (!acpi_gbl_global_list) {
+ goto exit;
+ }
+
+ element = acpi_gbl_global_list->list_head;
+ while (element) {
+ if ((element->component & component) &&
+ ((module == NULL)
+ || (0 == strcmp(module, element->module)))) {
+ descriptor =
+ ACPI_CAST_PTR(union acpi_descriptor,
+ &element->user_space);
+
+ if (element->size <
+ sizeof(struct acpi_common_descriptor)) {
+ acpi_os_printf("%p Length 0x%04X %9.9s-%4.4u "
+ "[Not a Descriptor - too small]\n",
+ descriptor, element->size,
+ element->module, element->line);
+ } else {
+ /* Ignore allocated objects that are in a cache */
+
+ if (ACPI_GET_DESCRIPTOR_TYPE(descriptor) !=
+ ACPI_DESC_TYPE_CACHED) {
+ acpi_os_printf
+ ("%p Length 0x%04X %9.9s-%4.4u [%s] ",
+ descriptor, element->size,
+ element->module, element->line,
+ acpi_ut_get_descriptor_name
+ (descriptor));
+
+ /* Validate the descriptor type using Type field and length */
+
+ descriptor_type = 0; /* Not a valid descriptor type */
+
+ switch (ACPI_GET_DESCRIPTOR_TYPE
+ (descriptor)) {
+ case ACPI_DESC_TYPE_OPERAND:
+
+ if (element->size ==
+ sizeof(union
+ acpi_operand_object))
+ {
+ descriptor_type =
+ ACPI_DESC_TYPE_OPERAND;
+ }
+ break;
+
+ case ACPI_DESC_TYPE_PARSER:
+
+ if (element->size ==
+ sizeof(union
+ acpi_parse_object)) {
+ descriptor_type =
+ ACPI_DESC_TYPE_PARSER;
+ }
+ break;
+
+ case ACPI_DESC_TYPE_NAMED:
+
+ if (element->size ==
+ sizeof(struct
+ acpi_namespace_node))
+ {
+ descriptor_type =
+ ACPI_DESC_TYPE_NAMED;
+ }
+ break;
+
+ default:
+
+ break;
+ }
+
+ /* Display additional info for the major descriptor types */
+
+ switch (descriptor_type) {
+ case ACPI_DESC_TYPE_OPERAND:
+
+ acpi_os_printf
+ ("%12.12s RefCount 0x%04X\n",
+ acpi_ut_get_type_name
+ (descriptor->object.common.
+ type),
+ descriptor->object.common.
+ reference_count);
+ break;
+
+ case ACPI_DESC_TYPE_PARSER:
+
+ acpi_os_printf
+ ("AmlOpcode 0x%04hX\n",
+ descriptor->op.asl.
+ aml_opcode);
+ break;
+
+ case ACPI_DESC_TYPE_NAMED:
+
+ acpi_os_printf("%4.4s\n",
+ acpi_ut_get_node_name
+ (&descriptor->
+ node));
+ break;
+
+ default:
+
+ acpi_os_printf("\n");
+ break;
+ }
+ }
+ }
+
+ num_outstanding++;
+ }
+
+ element = element->next;
+ }
+
+exit:
+ (void)acpi_ut_release_mutex(ACPI_MTX_MEMORY);
+
+ /* Print summary */
+
+ if (!num_outstanding) {
+ ACPI_INFO(("No outstanding allocations"));
+ } else {
+ ACPI_ERROR((AE_INFO, "%u (0x%X) Outstanding cache allocations",
+ num_outstanding, num_outstanding));
+ }
+
+ return_VOID;
+}
+
+#endif /* ACPI_DBG_TRACK_ALLOCATIONS */