linux-kernel - Re: [PATCH 2/3] ftrace: Return EINVAL when writing invalid val to set_ftrace

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Date:	Wed, 04 Nov 2009 10:58:34 +0800
From:	Li Zefan <lizf@...fujitsu.com>
To:	Frederic Weisbecker <fweisbec@...il.com>
CC:	Ingo Molnar <mingo@...e.hu>, Steven Rostedt <rostedt@...dmis.org>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 2/3] ftrace: Return EINVAL when writing invalid val to
 set_ftrace_filter

Frederic Weisbecker wrote:
> On Tue, Nov 03, 2009 at 08:56:28AM +0800, Li Zefan wrote:
>> Currently it doesn't warn user on invald value:
>>
>>  # echo nonexist_symbol > set_ftrace_filter
>>
>> Better make it return failure.
>>
>> Signed-off-by: Li Zefan <lizf@...fujitsu.com>
>> ---
> 
> 
> Acked-by: Frederic Weisbecker <fweisbec@...il.com>
> 
> But shouldn't we have the same kind of check from
> ftrace_match_module_records() if we haven't matched
> anything with the regex?
> 

Right, I overlooked it.

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