linux-kernel - Re: [RFC PATCH v5 00/30] perf tools: filtering events using eBPF programs

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Date:	Mon, 1 Jun 2015 22:15:10 -0300
From:	Arnaldo Carvalho de Melo <acme@...nel.org>
To:	Alexei Starovoitov <alexei.starovoitov@...il.com>
Cc:	Wang Nan <wangnan0@...wei.com>, namhyung@...nel.org,
	masami.hiramatsu.pt@...achi.com, paulus@...ba.org,
	a.p.zijlstra@...llo.nl, mingo@...hat.com, jolsa@...nel.org,
	dsahern@...il.com, daniel@...earbox.net, brendan.d.gregg@...il.com,
	lizefan@...wei.com, hekuang@...wei.com, xiakaixu@...wei.com,
	linux-kernel@...r.kernel.org, pi3orama@....com
Subject: Re: [RFC PATCH v5 00/30] perf tools: filtering events using eBPF
 programs

Em Mon, Jun 01, 2015 at 05:48:38PM -0700, Alexei Starovoitov escreveu:
> On Mon, Jun 01, 2015 at 07:37:46AM +0000, Wang Nan wrote:
> > This is the 5th version of patch series which tries to introduce eBPF
> > programs to perf. It enables 'perf record' to filter events using eBPF
> 
> thanks! As far as I could review this set addresses all of my earlier comments.
> 
> >  Patch 4/30 - 22/30 introduce libbpf, which first parse eBPF object
> >    files then load maps and programs into kernel.
> 
> the libbpf side looks good.
> For the patches that I haven't explictly acked yet:
> Acked-by: Alexei Starovoitov <ast@...mgrid.com>
> 
> >  Patch 23-30 - 30/30 are perf side modifications, introducing
> >    new syntax: '--event [.*].(o|bpf)' to enable passing eBPF object
> >    files to 'perf record', create probing points and attach programs
> >    to those points.
> 
> Looks good to me as well.
> Arnaldo, please take a deep look :)

I'll try applying and testing it, from looking at the description of the
changes it looks as well that my concerns have been addressed,

Thanks!

- Arnaldo
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