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

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Date:	Tue, 03 Nov 2009 23:43:02 -0500
From:	Steven Rostedt <rostedt@...dmis.org>
To:	Li Zefan <lizf@...fujitsu.com>
Cc:	Frederic Weisbecker <fweisbec@...il.com>,
	Ingo Molnar <mingo@...e.hu>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 2/3] ftrace: Return EINVAL when writing invalid val to
 set_ftrace_filter

On Wed, 2009-11-04 at 10:58 +0800, Li Zefan wrote:
> 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.
> 

Only the first patch is urgent. I'll get that out and wait for you to
update these other two (or just this one).

Thanks,

-- Steve


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