linux-kernel - Re: [PATCH 11/48] perf data: Support converting data from bpf_perf_event

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Date:	Tue, 23 Feb 2016 13:14:42 -0300
From:	Arnaldo Carvalho de Melo <acme@...nel.org>
To:	Wang Nan <wangnan0@...wei.com>
Cc:	Alexei Starovoitov <ast@...nel.org>,
	Arnaldo Carvalho de Melo <acme@...hat.com>,
	Brendan Gregg <brendan.d.gregg@...il.com>,
	Adrian Hunter <adrian.hunter@...el.com>,
	Cody P Schafer <dev@...yps.com>,
	"David S. Miller" <davem@...emloft.net>,
	He Kuang <hekuang@...wei.com>,
	Jérémie Galarneau 
	<jeremie.galarneau@...icios.com>, Jiri Olsa <jolsa@...nel.org>,
	Kirill Smelkov <kirr@...edi.com>,
	Li Zefan <lizefan@...wei.com>,
	Masami Hiramatsu <masami.hiramatsu.pt@...achi.com>,
	Namhyung Kim <namhyung@...nel.org>,
	Peter Zijlstra <peterz@...radead.org>, pi3orama@....com,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 11/48] perf data: Support converting data from
 bpf_perf_event_output()

Em Mon, Feb 22, 2016 at 09:10:38AM +0000, Wang Nan escreveu:
> bpf_perf_event_output() outputs data through sample->raw_data. This
> patch adds support to convert those data into CTF. A python script
> then can be used to process output data from BPF programs.
> 
> Test result:

Trying to test this I get:

[acme@...et linux]$ make O=/tmp/build/perf LIBBABELTRACE=1 -C tools/perf install-bin 2>&1 | grep babel
config/Makefile:663: No libbabeltrace found, disables 'perf data' CTF format support, please install libbabeltrace-dev[el]/libbabeltrace-ctf-dev
[acme@...et linux]$ rpm -q libbabeltrace-devel
libbabeltrace-devel-1.2.4-2.fc23.x86_64
[acme@...et linux]$ 

Guess we better improve this message... Anyway, trying to find libbabeltrace's
git tree to see if with its master branch this works...

- Arnaldo