linux-kernel - Re: [REPOST PATCH] ftrace: Remove the unused variant ftrace_update

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Message-ID: <20150915153739.GA5896@t440s.lenovo>
Date:	Tue, 15 Sep 2015 23:37:39 +0800
From:	Minfei Huang <mnfhuang@...il.com>
To:	Steven Rostedt <rostedt@...dmis.org>
Cc:	Minfei Huang <mhuang@...hat.com>, mingo@...hat.com,
	linux-kernel@...r.kernel.org
Subject: Re: [REPOST PATCH] ftrace: Remove the unused variant
 ftrace_update_time

On 09/15/15 at 09:35am, Steven Rostedt wrote:
> On Tue, 15 Sep 2015 15:10:43 +0800
> Minfei Huang <mhuang@...hat.com> wrote:
> 
> > From: Minfei Huang <mnfhuang@...il.com>
> > 
> > Since the patch "ftrace: remove daemon(cb7be3b)" remove the function
> > ftraced, the variant ftrace_update_time never be used any more.
> > 
> > Remove the unused variant ftrace_update_time.
> 
> Actually, the patch I would like to see is this variable being used.
> I'd like to know this statistic.

Hi, Steven.

I think the variant ftrace_update_time is not used any more. Previously,
it is used to print the time how long ftrace will spend to update the
code in fucntion ftraced. 

> 
> Maybe add it to the dyn_ftrace_total_info file?
> 

This file only uses the variant ftrace_update_tot_cnt which is stored
the updated function number.

Thanks
Minfei
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