Re: [PATCH 5/5] perf tools: Enhance parsing events tracepoint error output

From: RaphaÃl Beamonte
Date: Fri Sep 11 2015 - 13:50:46 EST


2015-09-11 12:16 GMT-04:00 Jiri Olsa <jolsa@xxxxxxxxxx>:
> On Sat, Sep 12, 2015 at 01:09:31AM +0900, Namhyung Kim wrote:
<SNIP>
>> has a problem - if tracefs is mounted under debugfs, the access mode
>> of debugfs also affects, so in this case I had to change it both for
>> debugfs and tracefs..
>
>
> hum, I wonder the error message needs to be that smart..
>
> jirka

Hmm... If tracefs is mounted under debugfs, wouldn't remounting
debugfs do the trick, as it was done before?
If so, why couldn't we just check the paths with a basic strcmp to
verify if tracefs starts by debugfs, and in that case offer to remount
debugfs, else offer to remount tracefs?
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