Re: [PATCH 2/5] perf, x86: Enable PDIR precise instruction profiling on IvyBridge

Peter Zijlstra
2012-07-02T20:22:30Z

On Mon, 2012-07-02 at 21:57 +0200, Andi Kleen wrote:
> > Already told you no.
>
> No on what? You don't want PDIR mode? Or you don't like something
> with my implementation?

Both are crap.

If anything its an PEBS alias, we have infrastructure for that, yet you
invent new things.

You do random things like only :pp for no apparent reason.

PDIR is only supported on a single counter, regular PEBS 'instructions'
events allow for 4+ counters. Therefore a direct substitution is not
valid.