[PATCH RFC 3/6] tools/bpftool: Add BTF_KIND_FLOAT support
From: Ilya Leoshkevich <iii@linux.ibm.com>
Date: 2021-02-10 03:05:06
Subsystem:
bpf [general] (safe dynamic programs and tools), bpf [tooling] (bpftool), the rest · Maintainers:
Alexei Starovoitov, Daniel Borkmann, Andrii Nakryiko, Eduard Zingerman, Kumar Kartikeya Dwivedi, Quentin Monnet, Linus Torvalds
Only dumping support needs to be adjusted, the code structure follows that of BTF_KIND_INT. Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com> --- tools/bpf/bpftool/btf.c | 13 +++++++++++++ tools/bpf/bpftool/btf_dumper.c | 1 + 2 files changed, 14 insertions(+)
diff --git a/tools/bpf/bpftool/btf.c b/tools/bpf/bpftool/btf.c
index fe9e7b3a4b50..7e72527b0409 100644
--- a/tools/bpf/bpftool/btf.c
+++ b/tools/bpf/bpftool/btf.c@@ -36,6 +36,7 @@ static const char * const btf_kind_str[NR_BTF_KINDS] = { [BTF_KIND_FUNC_PROTO] = "FUNC_PROTO", [BTF_KIND_VAR] = "VAR", [BTF_KIND_DATASEC] = "DATASEC", + [BTF_KIND_FLOAT] = "FLOAT", }; struct btf_attach_table {
@@ -327,6 +328,18 @@ static int dump_btf_type(const struct btf *btf, __u32 id, jsonw_end_array(w); break; } + case BTF_KIND_FLOAT: { + __u32 v = *(__u32 *)(t + 1); + + if (json_output) { + jsonw_uint_field(w, "size", t->size); + jsonw_uint_field(w, "nr_bits", BTF_FLOAT_BITS(v)); + } else { + printf(" size=%u nr_bits=%u", + t->size, BTF_FLOAT_BITS(v)); + } + break; + } default: break; }
diff --git a/tools/bpf/bpftool/btf_dumper.c b/tools/bpf/bpftool/btf_dumper.c
index 0e9310727281..7ca54d046362 100644
--- a/tools/bpf/bpftool/btf_dumper.c
+++ b/tools/bpf/bpftool/btf_dumper.c@@ -596,6 +596,7 @@ static int __btf_dumper_type_only(const struct btf *btf, __u32 type_id, switch (BTF_INFO_KIND(t->info)) { case BTF_KIND_INT: case BTF_KIND_TYPEDEF: + case BTF_KIND_FLOAT: BTF_PRINT_ARG("%s ", btf__name_by_offset(btf, t->name_off)); break; case BTF_KIND_STRUCT:
--
2.29.2