linux-kernel - [PATCH] bpf: Make function btf_name_offset

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Message-Id: <20190116192940.32104-1-malat@debian.org>
Date:   Wed, 16 Jan 2019 20:29:40 +0100
From:   Mathieu Malaterre <malat@...ian.org>
To:     Martin KaFai Lau <kafai@...com>
Cc:     Mathieu Malaterre <malat@...ian.org>,
        Alexei Starovoitov <ast@...nel.org>,
        Daniel Borkmann <daniel@...earbox.net>, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH] bpf: Make function btf_name_offset_valid static

Initially in commit 69b693f0aefa ("bpf: btf: Introduce BPF Type Format
(BTF)") the function 'btf_name_offset_valid' was introduced as static
function it was later on changed to a non-static one, and then finally
in commit c454a46b5efd ("bpf: Add bpf_line_info support") the function
prototype was removed.

Revert back to original implementation and make the function static.
Remove warning triggered with W=1:

  kernel/bpf/btf.c:470:6: warning: no previous prototype for 'btf_name_offset_valid' [-Wmissing-prototypes]

Signed-off-by: Mathieu Malaterre <malat@...ian.org>
---
 kernel/bpf/btf.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/kernel/bpf/btf.c b/kernel/bpf/btf.c
index a2f53642592b..befe570be5ba 100644
--- a/kernel/bpf/btf.c
+++ b/kernel/bpf/btf.c
@@ -467,7 +467,7 @@ static const struct btf_kind_operations *btf_type_ops(const struct btf_type *t)
 	return kind_ops[BTF_INFO_KIND(t->info)];
 }
 
-bool btf_name_offset_valid(const struct btf *btf, u32 offset)
+static bool btf_name_offset_valid(const struct btf *btf, u32 offset)
 {
 	return BTF_STR_OFFSET_VALID(offset) &&
 		offset < btf->hdr.str_len;
-- 
2.19.2