linux-kernel - [RFC PATCH linux-next] bpf: bpf_kptr_xchg

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Date:   Sat, 30 Apr 2022 06:33:03 +0800
From:   kernel test robot <lkp@...el.com>
To:     Kumar Kartikeya Dwivedi <memxor@...il.com>
Cc:     kbuild-all@...ts.01.org,
        Linux Memory Management List <linux-mm@...ck.org>,
        Alexei Starovoitov <ast@...nel.org>,
        Daniel Borkmann <daniel@...earbox.net>,
        Andrii Nakryiko <andrii@...nel.org>,
        Martin KaFai Lau <kafai@...com>,
        Song Liu <songliubraving@...com>, Yonghong Song <yhs@...com>,
        John Fastabend <john.fastabend@...il.com>,
        KP Singh <kpsingh@...nel.org>, netdev@...r.kernel.org,
        bpf@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [RFC PATCH linux-next] bpf: bpf_kptr_xchg_proto can be static

kernel/bpf/helpers.c:1389:29: warning: symbol 'bpf_kptr_xchg_proto' was not declared. Should it be static?

Fixes: c0a5a21c25f3 ("bpf: Allow storing referenced kptr in map")
Reported-by: kernel test robot <lkp@...el.com>
Signed-off-by: kernel test robot <lkp@...el.com>
---
 kernel/bpf/helpers.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/kernel/bpf/helpers.c b/kernel/bpf/helpers.c
index 3e709fed530612..62864d2c44e4a3 100644
--- a/kernel/bpf/helpers.c
+++ b/kernel/bpf/helpers.c
@@ -1386,7 +1386,7 @@ BPF_CALL_2(bpf_kptr_xchg, void *, map_value, void *, ptr)
  */
 #define BPF_PTR_POISON ((void *)((0xeB9FUL << 2) + POISON_POINTER_DELTA))
 
-const struct bpf_func_proto bpf_kptr_xchg_proto = {
+static const struct bpf_func_proto bpf_kptr_xchg_proto = {
 	.func         = bpf_kptr_xchg,
 	.gpl_only     = false,
 	.ret_type     = RET_PTR_TO_BTF_ID_OR_NULL,