linux-kernel - Re: [PATCH net-next 2/3] bpf: introduce bpf_perf_event

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Message-ID: <562A4BE8.2060603@plumgrid.com>
Date:	Fri, 23 Oct 2015 08:02:00 -0700
From:	Alexei Starovoitov <ast@...mgrid.com>
To:	Peter Zijlstra <peterz@...radead.org>
Cc:	"David S. Miller" <davem@...emloft.net>,
	Ingo Molnar <mingo@...nel.org>, Wang Nan <wangnan0@...wei.com>,
	He Kuang <hekuang@...wei.com>,
	Arnaldo Carvalho de Melo <acme@...radead.org>,
	Daniel Borkmann <daniel@...earbox.net>, netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH net-next 2/3] bpf: introduce bpf_perf_event_output()
 helper

On 10/23/15 7:39 AM, Peter Zijlstra wrote:
> On Tue, Oct 20, 2015 at 08:02:34PM -0700, Alexei Starovoitov wrote:
>> >+static const struct bpf_func_proto bpf_perf_event_output_proto = {
>> >+	.func		= bpf_perf_event_output,
>> >+	.gpl_only	= false,
> Oh ?

no particular reason. key helper bpf_probe_read() is gpl, so all
bpf for tracing progs have to be gpl.
If you feel strongly about it, I can change it.

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