[RFC PATCH] bpf: __pcpu_scope_irq_work can be static

[kbuild test robot]

Fixes: 1bd02fb7c12e ("bpf: enable stackmap with build_id in nmi context")
Signed-off-by: Fengguang Wu <fengguang...@intel.com>
---
 stackmap.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/kernel/bpf/stackmap.c b/kernel/bpf/stackmap.c
index c33fec1..5d0a951 100644
--- a/kernel/bpf/stackmap.c
+++ b/kernel/bpf/stackmap.c
@@ -48,7 +48,7 @@ static void up_read_work(struct irq_work *entry)
        work->sem = NULL;
 }
 
-DEFINE_PER_CPU(struct stack_map_irq_work, irq_work);
+static DEFINE_PER_CPU(struct stack_map_irq_work, irq_work);
 
 static inline bool stack_map_use_build_id(struct bpf_map *map)
 {