linux-kernel - Re: [PATCH v2 net-next 0/2] split BPF out of core networking

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Message-ID: <CAMEtUuxZQuyJaTfoNECnZCJ=q8A_aMpncGwUgWNm9Huxm=bynw@mail.gmail.com>
Date:	Mon, 2 Jun 2014 07:57:33 -0700
From:	Alexei Starovoitov <ast@...mgrid.com>
To:	Arnaldo Carvalho de Melo <acme@...nel.org>
Cc:	Steven Rostedt <rostedt@...dmis.org>,
	Jonathan Corbet <corbet@....net>,
	"David S. Miller" <davem@...emloft.net>,
	Ingo Molnar <mingo@...nel.org>,
	Daniel Borkmann <dborkman@...hat.com>,
	Chema Gonzalez <chema@...gle.com>,
	Eric Dumazet <edumazet@...gle.com>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Jiri Olsa <jolsa@...hat.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	"H. Peter Anvin" <hpa@...or.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Kees Cook <keescook@...omium.org>,
	Network Development <netdev@...r.kernel.org>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v2 net-next 0/2] split BPF out of core networking

On Mon, Jun 2, 2014 at 7:16 AM, Arnaldo Carvalho de Melo
<acme@...nel.org> wrote:
> Em Mon, Jun 02, 2014 at 09:24:56AM -0400, Steven Rostedt escreveu:
>> On Mon, 2 Jun 2014 08:15:45 -0500
>> Jonathan Corbet <corbet@....net> wrote:
>
>> > On Mon,  2 Jun 2014 00:01:44 -0700
>> > Alexei Starovoitov <ast@...mgrid.com> wrote:
>
>> > > This patch set splits BPF out of core networking into generic component
>
>> > Quick, probably dumb question: if you're going to split it out, why not
>> > split it out entirely, into kernel/ or (perhaps better) lib/?  The
>> > whole point seems to be that BPF is outgrowing its networking home, so
>> > it seems like it might be better to make it truly generic.
>
>> I believe this is what Ingo suggested as well. If it is become generic,
>> it belongs in lib/
>
> Yes, that was his suggestion, which I agree with, FWIW.

I guess I posted v2 too quickly :) v2 splits filter.c into kernel/bpf/.
I think it's a better location than lib/bpf, since lib feels too constrained
by definition of 'library'. bpf is more than a set of library calls.
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