ACPICA: Enhance debugger statistics/memory command.

Debugger: Enhanced the Statistics/Memory command to emit the
total (maximum) memory used during execution, as well as the
maximum memory consumed by each of the various object types.

Signed-off-by: Alexey Starikovskiy <alexey.y.starikovskiy@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
diff --git a/drivers/acpi/namespace/nsalloc.c b/drivers/acpi/namespace/nsalloc.c
index 55b407a..1e6a1b0 100644
--- a/drivers/acpi/namespace/nsalloc.c
+++ b/drivers/acpi/namespace/nsalloc.c
@@ -61,6 +61,9 @@
 struct acpi_namespace_node *acpi_ns_create_node(u32 name)
 {
 	struct acpi_namespace_node *node;
+#ifdef ACPI_DBG_TRACK_ALLOCATIONS
+	u32 temp;
+#endif
 
 	ACPI_FUNCTION_TRACE(ns_create_node);
 
@@ -71,6 +74,15 @@
 
 	ACPI_MEM_TRACKING(acpi_gbl_ns_node_list->total_allocated++);
 
+#ifdef ACPI_DBG_TRACK_ALLOCATIONS
+	temp =
+	    acpi_gbl_ns_node_list->total_allocated -
+	    acpi_gbl_ns_node_list->total_freed;
+	if (temp > acpi_gbl_ns_node_list->max_occupied) {
+		acpi_gbl_ns_node_list->max_occupied = temp;
+	}
+#endif
+
 	node->name.integer = name;
 	ACPI_SET_DESCRIPTOR_TYPE(node, ACPI_DESC_TYPE_NAMED);
 	return_PTR(node);