netdev - Re: [PATCH bpf-next 0/4] libbpf: add raw BTF type dumping

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Message-ID: <20200930000329.bfcrg6qqvmbmlawk@ast-mbp.dhcp.thefacebook.com>
Date:   Tue, 29 Sep 2020 17:03:29 -0700
From:   Alexei Starovoitov <alexei.starovoitov@...il.com>
To:     Andrii Nakryiko <andriin@...com>
Cc:     bpf@...r.kernel.org, netdev@...r.kernel.org, ast@...com,
        daniel@...earbox.net, andrii.nakryiko@...il.com, kernel-team@...com
Subject: Re: [PATCH bpf-next 0/4] libbpf: add raw BTF type dumping

On Tue, Sep 29, 2020 at 04:28:39PM -0700, Andrii Nakryiko wrote:
> Add btf_dump__dump_type_raw() API that emits human-readable low-level BTF type
> information, same as bpftool output. bpftool is not switched to this API
> because bpftool still needs to perform all the same BTF type processing logic
> to do JSON output, so benefits are pretty much zero.

If the only existing user cannot actually use such api it speaks heavily
against adding such api to libbpf. Comparing strings in tests is nice, but
could be done with C output just as well.