1 files changed, 0 insertions, 2 deletions

diff --git a/include/asm-x86_64/proto.h b/include/asm-x86_64/proto.h
index a6d2ff5c69b7..2ce3adf7bfdc 100644
--- a/include/asm-x86_64/proto.h
+++ b/include/asm-x86_64/proto.h
@@ -91,8 +91,6 @@ extern void check_efer(void);
 
 extern int unhandled_signal(struct task_struct *tsk, int sig);
 
-extern int unsynchronized_tsc(void);
-
 extern void select_idle_routine(const struct cpuinfo_x86 *c);
 
 extern unsigned long table_start, table_end;