From: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
To: Lin Ming <ming.m.lin@intel.com>
Cc: Arnaldo Carvalho de Melo <acme@infradead.org>,
Peter Zijlstra <peterz@infradead.org>,
Frederic Weisbecker <fweisbec@gmail.com>,
LKML <linux-kernel@vger.kernel.org>,
"2nddept-manager@sdl.hitachi.co.jp"
<2nddept-manager@sdl.hitachi.co.jp>
Subject: Re: [RFC PATCH] perf report: add sort by file lines
Date: Fri, 01 Apr 2011 19:48:08 +0900 [thread overview]
Message-ID: <4D95AD68.6030500@hitachi.com> (raw)
In-Reply-To: <1301554645.14111.215.camel@minggr.sh.intel.com>
(2011/03/31 15:57), Lin Ming wrote:
>> So that what we need is a kind of the reverse compiler which generates
>> intermediate code (a sequence of register assignments) from
>> instruction code. That's not impossible task, but just hard and fun. :)
>> For that purpose, we'll need an instruction decoder and an evaluator
>> which allows us to trace the sequence of address dereferences.
>
> I may borrow code from objdump to decode instruction.
> But not sure about the instruction evaluator, any hints?
I think using objdump is a fast path to make it.
But since we already have a decoder(insn.c) and an evaluator like code (in kvm)
inside the kernel, we'd better reuse it in user space tools too :)
Thank you,
--
Masami HIRAMATSU
Software Platform Research Dept. Linux Technology Center
Hitachi, Ltd., Yokohama Research Laboratory
E-mail: masami.hiramatsu.pt@hitachi.com
next prev parent reply other threads:[~2011-04-01 10:48 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-03-29 9:32 [RFC PATCH] perf report: add sort by file lines Lin Ming
2011-03-29 9:46 ` Masami Hiramatsu
2011-03-29 9:54 ` Peter Zijlstra
2011-03-29 16:45 ` Lin Ming
2011-03-29 17:03 ` Peter Zijlstra
2011-03-29 17:06 ` Peter Zijlstra
2011-03-29 17:08 ` Peter Zijlstra
2011-03-29 17:45 ` Arnaldo Carvalho de Melo
2011-03-30 1:04 ` Masami Hiramatsu
2011-03-30 2:18 ` Arnaldo Carvalho de Melo
2011-03-31 6:57 ` Lin Ming
2011-04-01 10:48 ` Masami Hiramatsu [this message]
2011-03-31 8:45 ` Lin Ming
2011-03-31 13:46 ` Arnaldo Carvalho de Melo
2011-03-31 14:19 ` Lin Ming
2011-03-31 15:35 ` Arnaldo Carvalho de Melo
2011-03-31 14:01 ` Peter Zijlstra
2011-03-31 14:34 ` Lin Ming
2011-03-31 14:51 ` Lin Ming
2011-03-31 16:28 ` Peter Zijlstra
2011-03-31 16:32 ` Peter Zijlstra
2011-04-01 13:02 ` Lin Ming
2011-04-01 13:48 ` Peter Zijlstra
2011-04-01 10:44 ` Masami Hiramatsu
2011-04-01 11:05 ` Peter Zijlstra
2011-04-01 13:22 ` Lin Ming
2011-04-01 13:49 ` Peter Zijlstra
2011-04-01 13:57 ` Lin Ming
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