netdev - Re: [PATCH] bpftool: Allow to read btf as raw data

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Message-ID: <20191025071526.GB31679@krava>
Date:   Fri, 25 Oct 2019 09:15:26 +0200
From:   Jiri Olsa <jolsa@...hat.com>
To:     Jakub Kicinski <jakub.kicinski@...ronome.com>
Cc:     Jiri Olsa <jolsa@...nel.org>, Alexei Starovoitov <ast@...nel.org>,
        Daniel Borkmann <daniel@...earbox.net>, netdev@...r.kernel.org,
        bpf@...r.kernel.org, Andrii Nakryiko <andriin@...com>,
        Yonghong Song <yhs@...com>, Martin KaFai Lau <kafai@...com>
Subject: Re: [PATCH] bpftool: Allow to read btf as raw data

On Thu, Oct 24, 2019 at 10:55:37AM -0700, Jakub Kicinski wrote:
> On Thu, 24 Oct 2019 15:30:25 +0200, Jiri Olsa wrote:
> > The bpftool interface stays the same, but now it's possible
> > to run it over BTF raw data, like:
> > 
> >   $ bpftool btf dump file /sys/kernel/btf/vmlinux
> >   [1] INT '(anon)' size=4 bits_offset=0 nr_bits=32 encoding=(none)
> >   [2] INT 'long unsigned int' size=8 bits_offset=0 nr_bits=64 encoding=(none)
> >   [3] CONST '(anon)' type_id=2
> > 
> > Signed-off-by: Jiri Olsa <jolsa@...nel.org>
> > ---
> > v3 changes:
> >  - fix title
> > 
> > v2 changes:
> >  - added is_btf_raw to find out which btf__parse_* function to call
> >  - changed labels and error propagation in btf__parse_raw
> >  - drop the err initialization, which is not needed under this change
> 
> 
> Aw, this is v3? Looks like I replied to the older now, such confusion :)

yea, that went well.. sry, missed the v3 in title

jirka