Commit ce27709b authored by Alexei Starovoitov's avatar Alexei Starovoitov Committed by Daniel Borkmann

bpf: Fix build in minimal configurations

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: default avatarRandy Dunlap <rdunlap@infradead.org>
Signed-off-by: default avatarAlexei Starovoitov <ast@kernel.org>
Signed-off-by: default avatarDaniel Borkmann <daniel@iogearbox.net>
Acked-by: Randy Dunlap <rdunlap@infradead.org> # build-tested
Link: https://lore.kernel.org/bpf/20191128043508.2346723-1-ast@kernel.org
parent 7c3977d1
...@@ -3463,6 +3463,7 @@ enum { ...@@ -3463,6 +3463,7 @@ enum {
__ctx_convert##_id, __ctx_convert##_id,
#include <linux/bpf_types.h> #include <linux/bpf_types.h>
#undef BPF_PROG_TYPE #undef BPF_PROG_TYPE
__ctx_convert_unused, /* to avoid empty enum in extreme .config */
}; };
static u8 bpf_ctx_convert_map[] = { static u8 bpf_ctx_convert_map[] = {
#define BPF_PROG_TYPE(_id, _name, prog_ctx_type, kern_ctx_type) \ #define BPF_PROG_TYPE(_id, _name, prog_ctx_type, kern_ctx_type) \
......
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