diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c
index 1c80521..83e08b7 100644
--- a/kernel/trace/trace.c
+++ b/kernel/trace/trace.c
@@ -6923,7 +6923,7 @@
 
 static DEFINE_MUTEX(tracing_err_log_lock);
 
-struct tracing_log_err *get_tracing_log_err(struct trace_array *tr)
+static struct tracing_log_err *get_tracing_log_err(struct trace_array *tr)
 {
 	struct tracing_log_err *err;
 
@@ -8192,7 +8192,7 @@
 	.llseek		= default_llseek,
 };
 
-struct dentry *trace_instance_dir;
+static struct dentry *trace_instance_dir;
 
 static void
 init_tracer_tracefs(struct trace_array *tr, struct dentry *d_tracer);