linux-kernel - Re: [PATCH 0/2] [GIT PULL][3.9] tracing: Fix in snapshot API

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Message-ID: <20130308131710.GA26790@gmail.com>
Date:	Fri, 8 Mar 2013 14:17:10 +0100
From:	Ingo Molnar <mingo@...nel.org>
To:	Hiraku Toyooka <hiraku.toyooka.gu@...achi.com>
Cc:	Steven Rostedt <rostedt@...dmis.org>, linux-kernel@...r.kernel.org,
	Andrew Morton <akpm@...ux-foundation.org>,
	Frederic Weisbecker <fweisbec@...il.com>,
	yrl.pp-manager.tt@...achi.com
Subject: Re: [PATCH 0/2] [GIT PULL][3.9] tracing: Fix in snapshot API


* Hiraku Toyooka <hiraku.toyooka.gu@...achi.com> wrote:

> Steven,
> 
> (03/08/2013 12:34 AM), Steven Rostedt wrote:
> >The second patch, returns success on a reset of the buffer even if
> >the buffer wasn't allocated. Returning -EINVAL is just confusing.
> 
> I realized we should update the snapshot documentation together with
> this change.
> I attached a patch to update the documentation. Could you include this
> patch?
> 
> Thanks,
> Hiraku Toyooka
> 
> 
> From: Hiraku Toyooka <hiraku.toyooka.gu@...achi.com>
> Subject: [PATCH] tracing: update documentation of snapshot utility
> 
> Now, "snapshot" file returns success on a reset of snapshot buffer
> even if the buffer wasn't allocated, instead of returning EINVAL.
> This patch updates snapshot desctiption according to the change.
> 
> Signed-off-by: Hiraku Toyooka <hiraku.toyooka.gu@...achi.com>
> ---
>  Documentation/trace/ftrace.txt | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/Documentation/trace/ftrace.txt b/Documentation/trace/ftrace.txt
> index 53d6a3c..a372304 100644
> --- a/Documentation/trace/ftrace.txt
> +++ b/Documentation/trace/ftrace.txt
> @@ -1873,7 +1873,7 @@ feature:
> 
>  	status\input  |     0      |     1      |    else    |
>  	--------------+------------+------------+------------+
> -	not allocated |(do nothing)| alloc+swap |   EINVAL   |
> +	not allocated |(do nothing)| alloc+swap |(do nothing)|
>  	--------------+------------+------------+------------+
>  	allocated     |    free    |    swap    |   clear    |
>  	--------------+------------+------------+------------+

I pulled all the updates - thanks guys!

	Ingo
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