Re: [PATCH] selftests: ftrace: Use md5sum to take less time of checking logs

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On 06/28/2017 08:59 AM, Steven Rostedt wrote:
> On Wed, 28 Jun 2017 08:30:24 -0600
> Shuah Khan <shuah@xxxxxxxxxx> wrote:
> 
>> On 06/28/2017 08:17 AM, Steven Rostedt wrote:
>>> On Tue, 27 Jun 2017 19:28:32 +0900
>>> Masami Hiramatsu <mhiramat@xxxxxxxxxx> wrote:
>>>   
>>>> Use md5sum so that it takes less time of checking
>>>> trace logs update. Since busybox tail/cat takes too
>>>> long time to read the trace log, this uses md5sum
>>>> to check whether trace log is updated or not.  
>>>
>>> How much faster is md5sum? I can see this causing issues in other
>>> environments.
>>>
>>> -- Steve  
>>
>> Sorry Steve. I pulled this into linux-ksefltest next. Are you concerned
>> about any specific environments? I can try this out and see if it is a
>> problem.
> 
> Yes please. I should probably do some playing too. I would like to fix
> that test anyway, as it is one of the longer ones as I do a lot of
> "paranoid checks". That is, I may go overboard in testing if tracing is
> off or not, by checking to make sure its off using different tactics.
> 

Please let me know how your trials go. I have a few things I have to get
to before I get around to trying this patch.

thanks,
-- Shuah

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