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

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Message-ID: <4F0E3A1C.5000105@gmail.com>
Date:	Thu, 12 Jan 2012 10:40:44 +0900
From:	Namhyung Kim <namhyung@...il.com>
To:	linux-kernel@...r.kernel.org
Cc:	Namhyung Kim <namhyung@...il.com>, 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>
Subject: Re: [PATCH RESEND 9/9] block, trace: implement ioblame - IO tracer
 with origin tracking

2012-01-12 10:37 AM, Tejun Heo wrote:
> Hello,
>
> On Wed, Jan 11, 2012 at 5:35 PM, Namhyung Kim<namhyung.kim@....com>  wrote:
>> Why do we need to trigger the TP for existing ones as we keep each entry at
>> its creation? Maybe I'm missing something?
>
> If a userland program starts to watch the TP after some intents are
> created, how is it gonna find out the existing ones?
>

Hi,

OK, but that can be controlled from userspace, I guess? Do we have to 
care about that?

Thanks,
Namhyung Kim

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