--- zzzz-none-000/linux-2.6.39.4/mm/vmstat.c	2011-08-03 19:43:28.000000000 +0000
+++ puma6-atom-6490-729/linux-2.6.39.4/mm/vmstat.c	2021-11-10 13:38:18.000000000 +0000
@@ -52,6 +52,15 @@
 }
 EXPORT_SYMBOL_GPL(all_vm_events);
 
+#if defined(CONFIG_AVM_POWERMETER)
+/**--------------------------------------------------------------------------------**\
+ * unprotected - for bh/irq-context 
+\**--------------------------------------------------------------------------------**/
+void __all_vm_events(unsigned long *ret) {
+	sum_vm_events(ret);
+}
+#endif/*--- #if defined(CONFIG_AVM_POWERMETER) ---*/
+
 #ifdef CONFIG_HOTPLUG
 /*
  * Fold the foreign cpu events into our own.