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Date:   Tue, 12 Mar 2019 11:26:50 -0400
From:   Steven Rostedt <rostedt@goodmis.org>
To:     Alexei Starovoitov <alexei.starovoitov@gmail.com>
Cc:     Joel Fernandes <joel@joelfernandes.org>,
        Daniel Colascione <dancol@google.com>,
        Karim Yaghmour <karim.yaghmour@opersys.com>,
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        Greg KH <gregkh@linuxfoundation.org>,
        LKML <linux-kernel@vger.kernel.org>,
        Andrew Morton <akpm@linux-foundation.org>,
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        Qais Yousef <qais.yousef@arm.com>,
        Randy Dunlap <rdunlap@infradead.org>,
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Subject: Re: [PATCH v4 1/2] Provide in-kernel headers for making it easy to
 extend the kernel
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On Mon, 11 Mar 2019 18:45:24 -0700
Alexei Starovoitov <alexei.starovoitov@gmail.com> wrote:

> what you're asking for we already have. It's called BTF.

Cool.

> pahole takes vmlinux dwarf and convert it into ~1Mbyte of BTF that includes
> all kernel types.
> With gzip it can be compressed further if necessary.
> We also have a prototype to generate all_vmlinux_types.h from BTF.
> But it's not a substitute for kernel headers.
> We've had a long discussion during last LPC regarding this:
> http://vger.kernel.org/lpc-bpf2018.html#session-2
> tldr: many tracing use cases will be solved with BTF, but kernel headers
> are here to stay.

Is this work a result of that session? (I was only able to attend part
of the BPF sessions due to conflicts). I guess I should watch the
videos.

-- Steve