From e9ff9d52540a53ce8c9eff5bf8b66467fe81eb2b Mon Sep 17 00:00:00 2001
From: Jean-Philippe Menil <jpmenil@gmail.com>
Date: Fri, 27 Mar 2020 21:47:13 +0100
Subject: [PATCH] bpf: Fix build warning regarding missing prototypes
Fix build warnings when building net/bpf/test_run.o with W=1 due
to missing prototype for bpf_fentry_test{1..6}.
Instead of declaring prototypes, turn off warnings with
__diag_{push,ignore,pop} as pointed out by Alexei.
Signed-off-by: Jean-Philippe Menil <jpmenil@gmail.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/bpf/20200327204713.28050-1-jpmenil@gmail.com
---
net/bpf/test_run.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/net/bpf/test_run.c b/net/bpf/test_run.c
index 4c921f5154e03..29dbdd4c29f68 100644
--- a/net/bpf/test_run.c
+++ b/net/bpf/test_run.c
@@ -114,6 +114,9 @@ static int bpf_test_finish(const union bpf_attr *kattr,
* architecture dependent calling conventions. 7+ can be supported in the
* future.
*/
+__diag_push();
+__diag_ignore(GCC, 8, "-Wmissing-prototypes",
+ "Global functions as their definitions will be in vmlinux BTF");
int noinline bpf_fentry_test1(int a)
{
return a + 1;
@@ -149,6 +152,7 @@ int noinline bpf_modify_return_test(int a, int *b)
*b += 1;
return a + *b;
}
+__diag_pop();
ALLOW_ERROR_INJECTION(bpf_modify_return_test, ERRNO);
--
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