diff --git a/kernel/sched.c b/kernel/sched.c
index b41ef663b9935eece852b67de775231ffd8e884c..a3c3ec825f426479bad4c23eec8045cb0cca8c96 100644
--- a/kernel/sched.c
+++ b/kernel/sched.c
@@ -470,6 +470,7 @@ unsigned long long cpu_clock(int cpu)
 
 	return now;
 }
+EXPORT_SYMBOL_GPL(cpu_clock);
 
 #ifndef prepare_arch_switch
 # define prepare_arch_switch(next)	do { } while (0)