diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c
index d2a658349ca16a7ce76087445152220e3a312042..ca9b7dfed8ef59ee2f19e067f657e3f68b3639a4 100644
--- a/kernel/trace/trace.c
+++ b/kernel/trace/trace.c
@@ -4506,7 +4506,7 @@ struct dentry *tracing_init_dentry(void)
 
 static struct dentry *d_percpu;
 
-struct dentry *tracing_dentry_percpu(void)
+static struct dentry *tracing_dentry_percpu(void)
 {
 	static int once;
 	struct dentry *d_tracer;