diff --git a/include/asm-alpha/thread_info.h b/include/asm-alpha/thread_info.h
index f4defc2..48a22e3 100644
--- a/include/asm-alpha/thread_info.h
+++ b/include/asm-alpha/thread_info.h
@@ -76,12 +76,14 @@
 #define TIF_UAC_NOFIX		7
 #define TIF_UAC_SIGBUS		8
 #define TIF_MEMDIE		9
+#define TIF_RESTORE_SIGMASK	10	/* restore signal mask in do_signal */
 
 #define _TIF_SYSCALL_TRACE	(1<<TIF_SYSCALL_TRACE)
 #define _TIF_NOTIFY_RESUME	(1<<TIF_NOTIFY_RESUME)
 #define _TIF_SIGPENDING		(1<<TIF_SIGPENDING)
 #define _TIF_NEED_RESCHED	(1<<TIF_NEED_RESCHED)
 #define _TIF_POLLING_NRFLAG	(1<<TIF_POLLING_NRFLAG)
+#define _TIF_RESTORE_SIGMASK	(1<<TIF_RESTORE_SIGMASK)
 
 /* Work to do on interrupt/exception return.  */
 #define _TIF_WORK_MASK		(_TIF_NOTIFY_RESUME	\