[RFC PATCH] bpf: bpf_timer_callback() can be static

[kbuild test robot]

Signed-off-by: Fengguang Wu <fengguang.wu@xxxxxxxxx>
---
 arraymap.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/kernel/bpf/arraymap.c b/kernel/bpf/arraymap.c
index 1e03c70..dbdad0c 100644
--- a/kernel/bpf/arraymap.c
+++ b/kernel/bpf/arraymap.c
@@ -338,7 +338,7 @@ static int __init register_perf_event_array_map(void)
 late_initcall(register_perf_event_array_map);
 
 /* Intended empty function as ebpf stub */
-enum hrtimer_restart bpf_timer_callback(struct hrtimer *timer __maybe_unused)
+static enum hrtimer_restart bpf_timer_callback(struct hrtimer *timer __maybe_unused)
 {
 	return HRTIMER_NORESTART;
 }
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