4 files changed, 26 insertions, 0 deletions

diff --git a/drivers/acpi/namespace/nsalloc.c b/drivers/acpi/namespace/nsalloc.c
index 55b407aae266..1e6a1b02dfd7 100644
--- a/drivers/acpi/namespace/nsalloc.c
+++ b/drivers/acpi/namespace/nsalloc.c
@@ -61,6 +61,9 @@ ACPI_MODULE_NAME("nsalloc")
 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 @@ struct acpi_namespace_node *acpi_ns_create_node(u32 name)
 
         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);
diff --git a/drivers/acpi/utilities/utcache.c b/drivers/acpi/utilities/utcache.c
index 1a1f8109159c..d796fcac33af 100644
--- a/drivers/acpi/utilities/utcache.c
+++ b/drivers/acpi/utilities/utcache.c
@@ -289,6 +289,14 @@ void *acpi_os_acquire_object(struct acpi_memory_list *cache)
 
                 ACPI_MEM_TRACKING(cache->total_allocated++);
 
+#ifdef ACPI_DBG_TRACK_ALLOCATIONS
+                if ((cache->total_allocated - cache->total_freed) >
+                    cache->max_occupied) {
+                        cache->max_occupied =
+                            cache->total_allocated - cache->total_freed;
+                }
+#endif
+
                 /* Avoid deadlock with ACPI_ALLOCATE_ZEROED */
 
                 status = acpi_ut_release_mutex(ACPI_MTX_CACHES);
diff --git a/include/acpi/acdebug.h b/include/acpi/acdebug.h
index 47296ffef7dd..c46a33abe457 100644
--- a/include/acpi/acdebug.h
+++ b/include/acpi/acdebug.h
@@ -159,6 +159,10 @@ void
 acpi_db_create_execution_threads(char *num_threads_arg,
                                  char *num_loops_arg, char *method_name_arg);
 
+#ifdef ACPI_DBG_TRACK_ALLOCATIONS
+u32 acpi_db_get_cache_info(struct acpi_memory_list *cache);
+#endif
+
 /*
  * dbfileio - Debugger file I/O commands
  */
diff --git a/include/acpi/aclocal.h b/include/acpi/aclocal.h
index 9b7e05c87595..e135dab905f8 100644
--- a/include/acpi/aclocal.h
+++ b/include/acpi/aclocal.h
@@ -954,6 +954,8 @@ struct acpi_memory_list {
 
         u32 total_allocated;
         u32 total_freed;
+        u32 max_occupied;
+        u32 total_size;
         u32 current_total_size;
         u32 requests;
         u32 hits;