| Subject | Re: [PATCH 00/12] perf: introduce model specific events and AMD IBS | From | Peter Zijlstra <> | Date | Thu, 15 Apr 2010 09:44:21 +0200 |
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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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