linux-kernel - Re: [PATCH 00/14] perf clang: Support compiling BPF script use builtin clang

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Message-ID: <20160924151559.GA49831@ast-mbp.thefacebook.com>
Date:   Sat, 24 Sep 2016 11:16:01 -0400
From:   Alexei Starovoitov <alexei.starovoitov@...il.com>
To:     Wang Nan <wangnan0@...wei.com>
Cc:     acme@...nel.org, ast@...com, pi3orama@....com,
        linux-kernel@...r.kernel.org, lizefan@...wei.com,
        Arnaldo Carvalho de Melo <acme@...hat.com>,
        He Kuang <hekuang@...wei.com>, Jiri Olsa <jolsa@...nel.org>
Subject: Re: [PATCH 00/14] perf clang: Support compiling BPF script use
 builtin clang

On Fri, Sep 23, 2016 at 12:49:47PM +0000, Wang Nan wrote:
> This patch set is the first step to implement features I announced
> in LinuxCon NA 2016. See page 31 of:
> 
>  http://events.linuxfoundation.org/sites/events/files/slides/Performance%20Monitoring%20and%20Analysis%20Using%20perf%20and%20BPF_1.pdf
> 
> This patch set links LLVM and Clang libraries to perf, so perf
> is able to compile BPF script to BPF object on the fly.

Nice!
So single perf binary won't have llvm external dependency anymore
or both ways will be maintained?
The command line stays the same?
If I understand the patches correctly, this set is establishing
the basic functionality and more complex features coming?