bpftool: Add support for KIND_RESTRICT to gen min_core_btf command

This change adjusts bpftool's type marking logic, as used in conjunction
with TYPE_EXISTS relocations, to correctly recognize and handle the
RESTRICT BTF kind.

Suggested-by: Andrii Nakryiko <andrii@kernel.org>
Signed-off-by: Daniel Müller <deso@posteo.net>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Quentin Monnet <quentin@isovalent.com>
Link: https://lore.kernel.org/bpf/20220623212205.2805002-1-deso@posteo.net/T/#m4c75205145701762a4b398e0cdb911d5b5305ffc
Link: https://lore.kernel.org/bpf/20220706212855.1700615-2-deso@posteo.net

diff --git a/tools/bpf/bpftool/gen.c b/tools/bpf/bpftool/gen.c
index 3d35fbc5fe16a9442345f46121300e5c03281f1d..1cf53bb01936654b3422fd15864b929d2281ad63 100644 (file)
--- a/tools/bpf/bpftool/gen.c
+++ b/tools/bpf/bpftool/gen.c
@@ -1762,6 +1762,7 @@ btfgen_mark_type(struct btfgen_info *info, unsigned int type_id, bool follow_poi
                }
                break;
        case BTF_KIND_CONST:
+       case BTF_KIND_RESTRICT:
        case BTF_KIND_VOLATILE:
        case BTF_KIND_TYPEDEF:
                err = btfgen_mark_type(info, btf_type->type, follow_pointers);