diff --git a/arch/s390/include/asm/thread_info.h b/arch/s390/include/asm/thread_info.h
index 13a04fcf77625618221ee68cb77d8a4715b213ba..97983e99ec27490983509d3410544bb7bbcb295c 100644
--- a/arch/s390/include/asm/thread_info.h
+++ b/arch/s390/include/asm/thread_info.h
@@ -36,6 +36,7 @@
  */
 struct thread_info {
 	unsigned long		flags;		/* low level flags */
+	unsigned int		cpu;		/* current CPU */
 };
 
 /*