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Date:	Thu, 19 Jun 2014 11:00:28 -0700
From:	Andi Kleen <>
To:	Stephane Eranian <>
Subject: Re: [PATCH 1/2] perf/x86: update Haswell PEBS event constraints

On Thu, Jun 19, 2014 at 05:58:28PM +0200, Stephane Eranian wrote:
> The following events support PEBS for all umasks,
> thus use INTEL_EVENT_CONSTRAINT() instead of
> For event 0xd0 (MEM_UOPS_RETIRED), the same is true, except
> we need to distinguish precise store (umask 0x82) from load
> latency events, thus we keep the breakdown per umask. But all
> umasks do support PEBS.

I sent a similar patch some time ago

However these days I'm actually thinking of just getting
rid of the detailed table except for PREC_DIST. All the PEBS
controls should be noops if the event does not support PEBS

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