Message-ID: <4D9996C8.4020703@hitachi.com>
Date: Mon, 04 Apr 2011 19:00:40 +0900
From: Akihiro Nagai <akihiro.nagai.hw@hitachi.com>
User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; ja; rv:1.9.2.15) Gecko/20110303 Thunderbird/3.1.9
MIME-Version: 1.0
To: Frederic Weisbecker <fweisbec@gmail.com>
Cc: David Ahern <dsahern@gmail.com>,
        Arnaldo Carvalho de Melo <acme@infradead.org>,
        Ingo Molnar <mingo@elte.hu>, Peter Zijlstra <peterz@infradead.org>,
        linux-kernel@vger.kernel.org,
        Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>,
        2nddept-manager@sdl.hitachi.co.jp, Paul Mackerras <paulus@samba.org>
Subject: Re: [PATCH -tip v3 3/6] perf branch trace: print pid and command
References: <20110324113137.20235.42265.stgit@localhost6.localdomain6> <20110324113209.20235.61900.stgit@localhost6.localdomain6> <4D8B79E6.2050603@gmail.com> <4D8C6B1B.70409@hitachi.com> <4D8CAE74.9080805@gmail.com> <4D906450.1040809@hitachi.com> <4D909BBB.5020500@gmail.com> <20110401151313.GC2335@nowhere>
In-Reply-To: <20110401151313.GC2335@nowhere>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Content-Transfer-Encoding: 7bit
Sender: linux-kernel-owner@vger.kernel.org
Content-Length: 1804
Lines: 35

(2011/04/02 0:13), Frederic Weisbecker wrote:
> On Mon, Mar 28, 2011 at 08:31:23AM -0600, David Ahern wrote:
>> On 03/28/11 04:34, Akihiro Nagai wrote:
>>>> from is sample->ip? to is sample->addr? In the above example
>>>> 0x39d3015260 is the value from sample->addr, 1526f is sample->ip which
>>>> resolves to _dl_next_ld_env_entry from /lib64/ld-2.13.so.
>>> Yes.
>>> In this example, resolved address is only sample->ip (branch from).
>>> We need the resolved address of sample->addr (branch to) too, because
>>> both of them are addresses of execution code.
>>
>> Ok, now I understand. In that case add conversion of sample->addr to
>> symbols to perf-script.
>
> I agree that we should rather use perf script for branch dumps.
> Sorry Akihiro, I think we suggested you to create this dedicated
> perf branch by the past. But then perf script became the vanilla dump
> tool in the middle and it seems more suitable today.
>
> We can still create a perf branch later in order to produce some more
> advanced post-processing tools. But for sample dumps perf script (which starts
> to show itself as a misnomer BTW) seems to be the right place.
Finally, I would like to create coverage test tools using BTS on perf.
I'm working on the project "Btrax" that is a coverage test tool using BTS.
The URL is: http://sourceforge.net/projects/btrax/

And, I would like to implement other functions on perf-branch too.
For example, call graph, source code browser like perf-annotate which
can show executed codes.
So, I wolud like to continue to develop perf-branch.
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/