diff --git a/kernel/trace/ftrace.c b/kernel/trace/ftrace.c
index b532e4a68c7440886c6d1a52ce6fd56e4d0352fb..0d5bcf69952d9889a17cc9f1b06dbd8a0df54e24 100644
--- a/kernel/trace/ftrace.c
+++ b/kernel/trace/ftrace.c
@@ -50,7 +50,7 @@ static struct ftrace_ops ftrace_list_end __read_mostly =
 static struct ftrace_ops *ftrace_list __read_mostly = &ftrace_list_end;
 ftrace_func_t ftrace_trace_function __read_mostly = ftrace_stub;
 
-void ftrace_list_func(unsigned long ip, unsigned long parent_ip)
+static void ftrace_list_func(unsigned long ip, unsigned long parent_ip)
 {
 	struct ftrace_ops *op = ftrace_list;
 
diff --git a/kernel/trace/trace_sched_switch.c b/kernel/trace/trace_sched_switch.c
index c16935d3bc5cd53f601a0a5961d01c7af3eac7de..93a66200915181591c034b113226883f5696a31a 100644
--- a/kernel/trace/trace_sched_switch.c
+++ b/kernel/trace/trace_sched_switch.c
@@ -196,7 +196,7 @@ static void tracing_sched_unregister(void)
 				&ctx_trace);
 }
 
-void tracing_start_sched_switch(void)
+static void tracing_start_sched_switch(void)
 {
 	long ref;
 
@@ -205,7 +205,7 @@ void tracing_start_sched_switch(void)
 		tracing_sched_register();
 }
 
-void tracing_stop_sched_switch(void)
+static void tracing_stop_sched_switch(void)
 {
 	long ref;