Re: [PATCH V5 4/6] perf, x86: handle multiple records in PEBS buffer

From: Peter Zijlstra
Date: Mon Mar 30 2015 - 17:25:13 EST


On Mon, Mar 30, 2015 at 10:11:16PM +0200, Andi Kleen wrote:
>
> Fair enough.
>
> For now we can simply only allow multi pebs if only a single
> PEBS event is active (non PEBS events don't matter, as we
> can just ignore those)
>
> This would be always on Atom, which only has a single PEBS
> counter.

I didn't say we can't do this for the big cores; I just said I want a
coherent story about what and why we're doing this.

The explanation was missing half the story, that's not good.
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