diff --git a/kernel/semaphore.c b/kernel/semaphore.c
index 1a064ad..aaaeae8 100644
--- a/kernel/semaphore.c
+++ b/kernel/semaphore.c
@@ -54,7 +54,6 @@
 {
 	unsigned long flags;
 
-	ftrace_special(sem->count, 0, __LINE__);
 	spin_lock_irqsave(&sem->lock, flags);
 	if (likely(sem->count > 0))
 		sem->count--;