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tools/bpftool: Add BTF_KIND_FLOAT support 

Only dumping support needs to be adjusted, the code structure follows
that of BTF_KIND_INT. Example plain and JSON outputs:

    [4] FLOAT 'float' size=4
    {"id":4,"kind":"FLOAT","name":"float","size":4}

Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Yonghong Song <yhs@fb.com>
Link: https://lore.kernel.org/bpf/20210226202256.116518-5-iii@linux.ibm.com
This commit is contained in:
Ilya Leoshkevich 2021-02-26 21:22:50 +01:00 committed by Alexei Starovoitov
parent 22541a9eeb
commit 737e0f919a
2 changed files with 9 additions and 0 deletions
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8
tools/bpf/bpftool/btf.c
View File

@ -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 +328,13 @@ static int dump_btf_type(const struct btf *btf, __u32 id,
jsonw_end_array(w);
break;
}
case BTF_KIND_FLOAT: {
if (json_output)
jsonw_uint_field(w, "size", t->size);
else
printf(" size=%u", t->size);
break;
}
default:
break;
}

1
tools/bpf/bpftool/btf_dumper.c
View File

@ -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: