Re: [PATCH 2/2] perf, x86: Enable PDIR precise instruction profilingon IvyBridge

[Andi Kleen]

On Wed, Jun 13, 2012 at 11:58:58PM +0200, Peter Zijlstra wrote:
> On Wed, 2012-06-13 at 14:54 -0700, Andi Kleen wrote:
> > Yes it's in effect, and it forces the event to counter 1. 
> > That is correct and that restriction is still there. 
> 
> OK, when we cannot magically replace 'instructions' with pdir.

Why not?  You want a new event?

It's still retired instructions, just sampled in a slightly different way.

Today instructions:pp just errors out BTW, so nothing should rely on it.

-Andi


-- 
ak@xxxxxxxxxxxxxxx -- Speaking for myself only
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