Index: arch/ppc64/include/proc/task.h
===================================================================
--- arch/ppc64/include/proc/task.h	(revision c034b164fce2965ed6484d251876ad7e153978a3)
+++ arch/ppc64/include/proc/task.h	(revision d8f7362433d8362e6786d4323938f5439281167a)
@@ -34,4 +34,5 @@
 
 #define task_create_arch(t)
+#define task_destroy_arch(t)
 
 #endif