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Date:	Mon, 1 Jun 2015 17:48:38 -0700
From:	Alexei Starovoitov <>
To:	Wang Nan <>
Subject: Re: [RFC PATCH v5 00/30] perf tools: filtering events using eBPF

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 <>

>  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 :)

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