Subject: Re: [PATCH net-next 2/3] bpf: introduce bpf_perf_event_output() helper

From: Alexei Starovoitov <[email-masked]>
Date: Fri, 23 Oct 2015 08:02:00 -0700

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.