stats: allow stats to be reset even if no objects have been instantiated

diff --git a/src/python/m5/stats.py b/src/python/m5/stats.py
index 76729d5ee42a5b9c772df02320a52dda15bd6cb0..907fad5319c6d7607a190bec91b75dc3d37de03f 100644 (file)
--- a/src/python/m5/stats.py
+++ b/src/python/m5/stats.py
@@ -59,6 +59,8 @@ def dump():
 def reset():
     # call reset stats on all SimObjects
     root = Root.getInstance()
-    for obj in root.descendants(): obj.resetStats()
+    if root:
+        for obj in root.descendants(): obj.resetStats()
+
     # call any other registered stats reset callbacks
     internal.stats.reset()