--- zzzz-none-000/linux-2.6.19.2/arch/um/kernel/tt/tracer.c	2007-01-10 19:10:37.000000000 +0000
+++ davinci-8020-5505/linux-2.6.19.2/arch/um/kernel/tt/tracer.c	2007-01-11 07:38:19.000000000 +0000
@@ -176,6 +176,7 @@
 int signal_index[32];
 int nsignals = 0;
 int debug_trace = 0;
+extern int io_nsignals, io_count, intr_count;
 
 extern void signal_usr1(int sig);