Index: linux-2.6.19-rc2-mm2/include/asm-ia64/timex.h
===================================================================
--- linux-2.6.19-rc2-mm2.orig/include/asm-ia64/timex.h	2006-10-13 11:25:04.000000000 -0500
+++ linux-2.6.19-rc2-mm2/include/asm-ia64/timex.h	2006-10-23 15:48:05.565981377 -0500
@@ -39,4 +39,6 @@ get_cycles (void)
 	return ret;
 }
 
+extern unsigned long long (*ia64_timestamp_clock)(void);
+
 #endif /* _ASM_IA64_TIMEX_H */