[PATCH 00/12] perf: introduce model specific events and AMD IBS
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From: Robert Richter on 13 Apr 2010 16:30 This patch series introduces model specific events and impments AMD IBS (Instruction Based Sampling) for perf_events. IBS is documented here: BIOS and Kernel Developer's Guide (BKDG) For AMD Family 10h Processors http://support.amd.com/us/Processor_TechDocs/31116.pdf AMD64 Architecture Programmer's Manual Volume 2: System Programming http://support.amd.com/us/Processor_TechDocs/24593.pdf 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. -Robert -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo(a)vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/ |