Messages in this thread | | | Subject | Re: [PATCH 1/5] perf, x86: Don't assume the alternative cycles encoding is architectural | From | Peter Zijlstra <> | Date | Wed, 06 Jun 2012 12:39:48 +0200 |
| |
On Tue, 2012-06-05 at 17:56 -0700, Andi Kleen wrote: > From: Andi Kleen <ak@linux.intel.com> > > cycles:p uses an special cycles encoding by default. However that is not > architectural, so it can only be used when the CPU is known > (it already caused problems on Sandy Bridge). It may or may not work > on future CPUs. > > So make it opt-in only. Right now I enabled it on Core2, Nehalem, Westmere > and not on Sandy-Bridge or Atom.
No. Also, c0 is a PEBS capable event on Atom just fine.
| |