Subject: Re: [PATCH] trace: Add tracepoints to fs subsystem
From: Steven Rostedt <rostedt@goodmis.org>
To: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Cc: Vaibhav Nagarnaik <vnagarnaik@google.com>,
        Alexander Viro <viro@zeniv.linux.org.uk>,
        Ingo Molnar <mingo@redhat.com>, Michael Rubin <mrubin@google.com>,
        David Sharp <dhsharp@google.com>, linux-kernel@vger.kernel.org,
        linux-fsdevel@vger.kernel.org, linux-mm@kvack.org,
        Jiaying Zhang <jiayingz@google.com>
In-Reply-To: <20110425113723.2666.A69D9226@jp.fujitsu.com>
References: <1303513209-26436-1-git-send-email-vnagarnaik@google.com>
	 <20110425113723.2666.A69D9226@jp.fujitsu.com>
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Date: Mon, 25 Apr 2011 11:39:45 -0400
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On Mon, 2011-04-25 at 11:35 +0900, KOSAKI Motohiro wrote:
> > From: Jiaying Zhang <jiayingz@google.com>
> > 
> > Many fs tracepoints can now be traced via ftrace, however there are a
> > few other tracepoints needed. This patch adds entry and exit tracepoints
> > for a few additional functions, viz.:
> > wait_on_buffer
> > block_write_full_page
> > mpage_readpages
> > file_read
> 
> Zero background description?
> 

Good point.

Could you please describe how this is useful, and how one can benefit
from these tracepoints.

-- Steve


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