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bpf: btf: Add pretty print capability for data with BTF type info

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This patch adds pretty print capability for data with BTF type info.
The current usage is to allow pretty print for a BPF map.

The next few patches will allow a read() on a pinned map with BTF
type info for its key and value.

This patch uses the seq_printf() infra.

Signed-off-by: Martin KaFai Lau <kafai@fb.com>
Acked-by: Alexei Starovoitov <ast@fb.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
This commit is contained in:
Martin KaFai Lau 2018-04-18 15:56:00 -07:00 • committed by Daniel Borkmann
parent 179cde8cef
commit b00b8daec8
2 changed files with 200 additions and 0 deletions
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2
include/linux/btf.h
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@ -33,5 +33,7 @@ struct btf_type;
const struct btf_type *btf_type_id_size(const struct btf *btf,
u32 *type_id,
u32 *ret_size);
void btf_type_seq_show(const struct btf *btf, u32 type_id, void *obj,
struct seq_file *m);
#endif