linux-kernel - Re: [PATCH] mmc: Provide tracepoints for request processing

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Date:	Thu, 24 Mar 2016 08:08:53 -0600
From:	Jens Axboe <axboe@...com>
To:	Baolin Wang <baolin.wang@...aro.org>, <ulf.hansson@...aro.org>,
	<rostedt@...dmis.org>, <mingo@...hat.com>
CC:	<adrian.hunter@...el.com>, <yangbo.lu@...escale.com>,
	<akpm@...ux-foundation.org>, <JBottomley@...n.com>,
	<lporzio@...ron.com>, <jonathanh@...dia.com>,
	<grundler@...omium.org>, <fabf@...net.be>, <yunpeng.gao@...el.com>,
	<dan.j.williams@...el.com>, <rabin.vincent@...s.com>,
	<chuanxiao.dong@...el.com>, <shawn.lin@...k-chips.com>,
	<heiko@...ech.de>, <dianders@...omium.org>, <david@...tonic.nl>,
	<broonie@...nel.org>, <linus.walleij@...aro.org>,
	<takahiro.akashi@...aro.org>, <linux-kernel@...r.kernel.org>,
	<linux-mmc@...r.kernel.org>
Subject: Re: [PATCH] mmc: Provide tracepoints for request processing

On 03/24/2016 05:54 AM, Baolin Wang wrote:
> This patch provides some tracepoints for the lifecycle of a request from
> fetching to completion to help with performance analysis of MMC subsystem.

Most of these already exist as block layer trace points, why do we need 
mmc specific ones?


-- 
Jens Axboe