linux-kernel - Re: [PATCH RESEND 9/9] block, trace: implement ioblame

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Message-ID: <20120111170635.GE26832@google.com>
Date:	Wed, 11 Jan 2012 09:06:35 -0800
From:	Tejun Heo <tj@...nel.org>
To:	Namhyung Kim <namhyung.kim@....com>
Cc:	axboe@...nel.dk, mingo@...hat.com, rostedt@...dmis.org,
	fweisbec@...il.com, teravest@...gle.com, slavapestov@...gle.com,
	ctalbott@...gle.com, dhsharp@...gle.com,
	linux-kernel@...r.kernel.org, winget@...gle.com,
	Chanho Park <chanho61.park@...sung.com>, namhyung@...il.com
Subject: Re: [PATCH RESEND 9/9] block, trace: implement ioblame - IO tracer
 with origin tracking

Hello,

On Wed, Jan 11, 2012 at 03:15:54PM +0900, Namhyung Kim wrote:
> How about adding another tracepoint for intent creation to provide
> raw data as well, somewhere in iob_get_intent() or
> iob_intent_create() maybe? It can be useful to get those data for
> further processing IMHO.

While I don't particularly object to that, information and
notification (via inotify) for that is already available via
ioblame/intents file which we need regardless of the new tracepoint,
so it's kinda redundant, isn't it?

Thanks.

-- 
tejun
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