bpf: Make btf_check_func_type_match() static

Fix the following sparse warning:

kernel/bpf/btf.c:4131:5: warning: symbol 'btf_check_func_type_match' was
not declared. Should it be static?

Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Hongbo Yao <yaohongbo@huawei.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/bpf/20200210011441.147102-1-yaohongbo@huawei.com

diff --git a/kernel/bpf/btf.c b/kernel/bpf/btf.c
index 805c43b..7871400 100644 (file)
--- a/kernel/bpf/btf.c
+++ b/kernel/bpf/btf.c
@@ -4142,9 +4142,9 @@ int btf_distill_func_proto(struct bpf_verifier_log *log,
  * EFAULT - verifier bug
  * 0 - 99% match. The last 1% is validated by the verifier.
  */
-int btf_check_func_type_match(struct bpf_verifier_log *log,
-                             struct btf *btf1, const struct btf_type *t1,
-                             struct btf *btf2, const struct btf_type *t2)
+static int btf_check_func_type_match(struct bpf_verifier_log *log,
+                                    struct btf *btf1, const struct btf_type *t1,
+                                    struct btf *btf2, const struct btf_type *t2)
 {
        const struct btf_param *args1, *args2;
        const char *fn1, *fn2, *s1, *s2;