Re: [PATCH v3 6/9] perf, x86: handle multiple records in PEBS buffer
From: Peter Zijlstra
Date: Mon Jul 28 2014 - 02:53:16 EST
On Mon, Jul 28, 2014 at 10:24:30AM +0800, Yan, Zheng wrote:
> I don't think this method works for interrupt threshold > 1 case. When collision
> happens, the hardware only create one PEBS record. The status in next record has
> nothing to do with the collision record.
Andi previously stated that the hardware will always generate a record
for each event:
http://marc.info/?l=linux-kernel&m=140129731708247
Please lock yourselves in room and do not come out until you can give a
straight and coherent answer.
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