linux-kernel - Re: Re: [RFC PATCH 00/28] ktap: A lightweight dynamic tracing tool for Linux

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Message-ID: <5343A7F4.80702@hitachi.com>
Date:	Tue, 08 Apr 2014 16:40:36 +0900
From:	Masami Hiramatsu <masami.hiramatsu.pt@...achi.com>
To:	Peter Zijlstra <peterz@...radead.org>
Cc:	Ingo Molnar <mingo@...nel.org>,
	Alexei Starovoitov <ast@...mgrid.com>,
	Jovi Zhangwei <jovi.zhangwei@...il.com>,
	Ingo Molnar <mingo@...hat.com>,
	Steven Rostedt <rostedt@...dmis.org>,
	LKML <linux-kernel@...r.kernel.org>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Frederic Weisbecker <fweisbec@...il.com>,
	Daniel Borkmann <dborkman@...hat.com>,
	Arnaldo Carvalho de Melo <acme@...radead.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Jiri Olsa <jolsa@...hat.com>, Geoff.Levand@...wei.com
Subject: Re: Re: [RFC PATCH 00/28] ktap: A lightweight dynamic tracing
 tool for Linux

(2014/04/07 22:55), Peter Zijlstra wrote:
> On Wed, Apr 02, 2014 at 09:42:03AM +0200, Ingo Molnar wrote:
>> I'd suggest using C syntax instead initially, because that's what the 
>> kernel is using.
>>
>> The overwhelming majority of people probing the kernel are 
>> programmers, so there's no point in inventing new syntax, we should 
>> reuse existing syntax!
> 
> Yes please, keep it C, I forever forget all other syntaxes. While I have
> in the past known other languages, I never use them frequently enough to
> remember them. And there's nothing more frustrating than having to fight
> a tool/language when you just want to get work done.

Why wouldn't you write a kernel module in C directly? :)
It seems that all what you need is not a tracing language nor a bytecode
engine, but an well organized tracing APIs(library?) for writing a kernel
module for tracing...

Thank you,

-- 
Masami HIRAMATSU
Software Platform Research Dept. Linux Technology Center
Hitachi, Ltd., Yokohama Research Laboratory
E-mail: masami.hiramatsu.pt@...achi.com


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