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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
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@ -114,6 +114,9 @@ static int bpf_test_finish(const union bpf_attr *kattr,
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* architecture dependent calling conventions. 7+ can be supported in the
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* future.
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*/
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__diag_push();
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__diag_ignore(GCC, 8, "-Wmissing-prototypes",
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"Global functions as their definitions will be in vmlinux BTF");
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int noinline bpf_fentry_test1(int a)
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{
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return a + 1;
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@ -149,6 +152,7 @@ int noinline bpf_modify_return_test(int a, int *b)
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*b += 1;
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return a + *b;
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}
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__diag_pop();
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ALLOW_ERROR_INJECTION(bpf_modify_return_test, ERRNO);
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