diff --git a/packages/SystemUI/src/com/android/systemui/statusbar/policy/ZenModeControllerImpl.java b/packages/SystemUI/src/com/android/systemui/statusbar/policy/ZenModeControllerImpl.java
index b135d0d..1c3a8850 100644
--- a/packages/SystemUI/src/com/android/systemui/statusbar/policy/ZenModeControllerImpl.java
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/policy/ZenModeControllerImpl.java
@@ -28,6 +28,7 @@
 import android.net.Uri;
 import android.os.Handler;
 import android.os.HandlerExecutor;
+import android.os.Trace;
 import android.os.UserHandle;
 import android.os.UserManager;
 import android.provider.Settings.Global;
@@ -122,7 +123,12 @@
                 userTracker.getUserId()) {
             @Override
             protected void handleValueChanged(int value, boolean observedChange) {
-                updateZenModeConfig();
+                try {
+                    Trace.beginSection("updateZenModeConfig");
+                    updateZenModeConfig();
+                } finally {
+                    Trace.endSection();
+                }
             }
         };
         mNoMan = (NotificationManager) context.getSystemService(Context.NOTIFICATION_SERVICE);