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SubjectRe: [PATCH 00/12] perf: introduce model specific events and AMD IBS
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On Tue, 2010-04-13 at 22:23 +0200, Robert Richter wrote:
> This patch series introduces model specific events and impments AMD
> IBS (Instruction Based Sampling) for perf_events.

I would much rather it uses the ->precise thing PEBS also uses,
otherwise we keep growing funny arch extensions and end up with a
totally fragmented trainwreck of an ABI.

> The general approach is to introduce a flag to mark an event as model
> specific. With that flag set a model specific ibs (raw) config value
> can be passed to the pmu for setup. When there are ibs samples
> available, it is sent back as a raw data sample to the userland. So we
> have a raw config value and raw sampling data. This requires the
> userland to setup ibs and further extract and process sampling data.
>
> Patches 1-8 rework and refactor the code to prepare the ibs
> implementation. This is done in patches 9-12.
>
> I will add ibs example code to libpfm4.

Please add a valid usecase to tools/perf/ instead.



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