linux-kernel - Re: [PATCH] Documentation: Fix the wrong command `echo -1 > set_ftrace

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Message-ID: <20150209105729.0410df4a@lwn.net>
Date:	Mon, 9 Feb 2015 10:57:29 -0500
From:	Jonathan Corbet <corbet@....net>
To:	Wang Long <long.wanglong@...wei.com>
Cc:	<rostedt@...dmis.org>, <mingo@...hat.com>,
	<linux-doc@...r.kernel.or>, <linux-kernel@...r.kernel.org>,
	<peifeiyue@...wei.com>
Subject: Re: [PATCH] Documentation: Fix the wrong command `echo -1 > 
 set_ftrace_pid` for cleaning the filter.

On Thu, 5 Feb 2015 05:16:14 +0000
Wang Long <long.wanglong@...wei.com> wrote:

> The command `echo > set_ftrace_pid` should be used to clean the filter quietly.
> because the command `echo -1 >  set_ftrace_pid` will output the following:
> "bash: echo: write error: Invalid argument".
> 
> so update the file Documentation/trace/ftrace.txt.

So this is in my pile for the docs tree, but I was hoping to see an ack
from Steve first...?

Thanks,

jon
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