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| author |   Andrii Nakryiko <andriin@fb.com> | 2019-12-18 16:28:36 -0800 |
|---|---|---|
| committer |   Alexei Starovoitov <ast@kernel.org> | 2019-12-18 17:33:36 -0800 |
| commit | 630628cb7dc39780660d8fcedc66e0298a82f9da (patch) | |
| tree | 3b5e3706df1729956cdd345108858418713ee117 /tools | |
| parent | libbpf: Allow to augment system Kconfig through extra optional config (diff) | |
| download | linux-dev-630628cb7dc39780660d8fcedc66e0298a82f9da.tar.xz linux-dev-630628cb7dc39780660d8fcedc66e0298a82f9da.zip | |
libbpf: BTF is required when externs are present
BTF is required to get type information about extern variables.
Signed-off-by: Andrii Nakryiko <andriin@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20191219002837.3074619-4-andriin@fb.com
Diffstat (limited to '')
| -rw-r--r-- | tools/lib/bpf/libbpf.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/tools/lib/bpf/libbpf.c b/tools/lib/bpf/libbpf.c index 7b74382c7977..6340b81b555b 100644 --- a/tools/lib/bpf/libbpf.c +++ b/tools/lib/bpf/libbpf.c @@ -1887,7 +1887,8 @@ static void bpf_object__sanitize_btf_ext(struct bpf_object *obj) static bool bpf_object__is_btf_mandatory(const struct bpf_object *obj) { - return obj->efile.btf_maps_shndx >= 0; + return obj->efile.btf_maps_shndx >= 0 || + obj->nr_extern > 0; } static int bpf_object__init_btf(struct bpf_object *obj, |