On 11/27/19 8:35 PM, Alexei Starovoitov wrote:
> Some kconfigs can have BPF enabled without a single valid program type.
> In such configurations the build will fail with:
> ./kernel/bpf/btf.c:3466:1: error: empty enum is invalid
>
> Fix it by adding unused value to the enum.
>
> Reported-by: Randy Dunlap <rdunlap@xxxxxxxxxxxxx>
> Signed-off-by: Alexei Starovoitov <ast@xxxxxxxxxx>
Acked-by: Randy Dunlap <rdunlap@xxxxxxxxxxxxx> # build-tested
Thanks.
> ---
> kernel/bpf/btf.c | 1 +
> 1 file changed, 1 insertion(+)
>
> diff --git a/kernel/bpf/btf.c b/kernel/bpf/btf.c
> index bd5e11881ba3..7d40da240891 100644
> --- a/kernel/bpf/btf.c
> +++ b/kernel/bpf/btf.c
> @@ -3463,6 +3463,7 @@ enum {
> __ctx_convert##_id,
> #include <linux/bpf_types.h>
> #undef BPF_PROG_TYPE
> + __ctx_convert_unused, /* to avoid empty enum in extreme .config */
> };
> static u8 bpf_ctx_convert_map[] = {
> #define BPF_PROG_TYPE(_id, _name, prog_ctx_type, kern_ctx_type) \
>
--
~Randy
