From: David Ahern <dsahern@gmail.com>
To: Akihiro Nagai <akihiro.nagai.hw@hitachi.com>
Cc: Arnaldo Carvalho de Melo <acme@infradead.org>,
Ingo Molnar <mingo@elte.hu>,
Peter Zijlstra <peterz@infradead.org>,
Frederic Weisbecker <fweisbec@gmail.com>,
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
Date: Mon, 28 Mar 2011 08:31:23 -0600 [thread overview]
Message-ID: <4D909BBB.5020500@gmail.com> (raw)
In-Reply-To: <4D906450.1040809@hitachi.com>
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.
>>
>>>
>>> Can perf-script do it by writing scripts?
>>
>> If you are pulling the data from a perf sample then you can accomplish
>> the same goal within perf-script.
> It seems that perf-script doesn't have the interface of converting
> sample->addr to symbol, pid, comm and others. Of course, we can add
> the interface to perf-script, and it could be another way to implement
> this function using perf-script.
> However, since BTS output usually becomes huge, it would be very slow
> to convert all the data by python/perl.
Custom fields are not run through python/perl; they are generated from
C-code. Take a look at tools/perf/builtin-script.c
next prev parent reply other threads:[~2011-03-28 14:31 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-03-24 11:31 [PATCH -tip v3 0/6] perf: Introduce branch sub commands Akihiro Nagai
2011-03-24 11:31 ` [PATCH -tip v3 1/6] perf: new subcommand perf branch record Akihiro Nagai
2011-03-24 11:32 ` [PATCH -tip v3 2/6] perf branch: Introduce new sub command 'perf branch trace' Akihiro Nagai
2011-03-24 11:32 ` [PATCH -tip v3 3/6] perf branch trace: print pid and command Akihiro Nagai
2011-03-24 17:05 ` David Ahern
2011-03-25 10:14 ` Akihiro Nagai
2011-03-25 15:02 ` David Ahern
2011-03-28 10:34 ` Akihiro Nagai
2011-03-28 14:31 ` David Ahern [this message]
2011-04-01 15:13 ` Frederic Weisbecker
2011-04-01 15:15 ` Peter Zijlstra
2011-04-01 15:24 ` Arnaldo Carvalho de Melo
2011-04-01 17:11 ` David Ahern
2011-04-01 20:20 ` Peter Zijlstra
2011-04-06 12:15 ` Frederic Weisbecker
2011-04-06 14:09 ` Arnaldo Carvalho de Melo
2011-04-06 14:15 ` Peter Zijlstra
2011-04-06 14:30 ` Frederic Weisbecker
2011-04-06 14:34 ` David Ahern
2011-04-06 14:43 ` Frederic Weisbecker
2011-04-06 14:42 ` Frederic Weisbecker
2011-04-06 14:55 ` Frederic Weisbecker
2011-04-06 17:18 ` Arnaldo Carvalho de Melo
2011-04-04 10:00 ` Akihiro Nagai
2011-04-06 12:52 ` Frederic Weisbecker
2011-04-11 4:54 ` Akihiro Nagai
2011-03-24 11:32 ` [PATCH -tip v3 4/6] perf branch trace: print file path of the executed elf Akihiro Nagai
2011-03-24 11:32 ` [PATCH -tip v3 5/6] perf branch trace: print function+offset Akihiro Nagai
2011-03-24 11:32 ` [PATCH -tip v3 6/6] perf branch trace: add print all option Akihiro Nagai
2011-03-30 14:46 ` [PATCH -tip v3 0/6] perf: Introduce branch sub commands Frederic Weisbecker
2011-04-01 10:57 ` Akihiro Nagai
2011-04-01 12:51 ` Frederic Weisbecker
2011-04-01 14:43 ` Frederic Weisbecker
2011-04-04 10:06 ` Akihiro Nagai
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