Re: [PATCH 2/2] perf: SNB exclusive PMU access forINST_RETIRED:PREC_DIST

[Andi Kleen]

> > > This isn't limited to admin, right? So the above turns into a DoS on the
> > > console.
> > >
> > Ok, so how about a WARN_ON_ONCE() instead?
> 
> That should be fine I guess ;-)

imho there is need for a generic mechanism to return an error string
to the user program without such hacks.

-Andi

-- 
ak@xxxxxxxxxxxxxxx -- Speaking for myself only
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