On Mon, Jan 21, 2013 at 02:20:55PM -0600, Steven L. Kinney wrote: > From: "Steven L. Kinney" <steven.kin...@amd.com> > > These patches implement the AMD IOMMUv2.5 Performance Counter functionality > via custom perf PMU and implement static counting for various IOMMU > translations. The patches address three areas of functionality: > > 1) Add a PCI quirk for the enablement of IOMMUv2 EFR PC within a specific > AMD family/model in which BIOS has not enabled. Based on code > implemented by Andreas Herrmann at AMD Dresden. > 2) Extend the AMD IOMMU initialization to include IOMMUv2 PC enablement > and access to IOMMUv2 counter registers. For all AMD family/models > that implement IOMMUv2.5 functionality. > 3) Code the perf IOMMUv2 PMU to manage IOMMUv2 perf events, which call > the function(s) extending the AMD IOMMU core driver. For all AMD > family/models that implement IOMMUv2.5 functionality. > > The command-line, to invoke the iommuv2 PMU, is: > > perf stat -e iommuv2/config=[data],config1=[data]/{u,r} [command] > > For information regarding AMD IOMMU v2.5 PC configuration, see the public > specification.
Is there a name for it? I see http://support.amd.com/us/Processor_TechDocs/48882.pdf but that looks to be for v2.0? > > Steven L. Kinney (3): > AMD x86 quirks: Quirk for enabling IOMMUv2 PC feature > AMD IOMMUv2 PC resource management hooks > AMD IOMMUv2 PC perf PMU implementation > > arch/x86/kernel/cpu/Makefile | 1 + > arch/x86/kernel/cpu/perf_event_amd_iommuv2.c | 429 > ++++++++++++++++++++++++++ > arch/x86/kernel/cpu/perf_event_amd_iommuv2.h | 42 +++ > arch/x86/kernel/quirks.c | 17 + > drivers/iommu/Kconfig | 10 + > drivers/iommu/amd_iommu_init.c | 99 ++++++ > drivers/iommu/amd_iommu_types.h | 12 + > include/linux/pci_ids.h | 2 + > 8 files changed, 612 insertions(+) > create mode 100644 arch/x86/kernel/cpu/perf_event_amd_iommuv2.c > create mode 100644 arch/x86/kernel/cpu/perf_event_amd_iommuv2.h > > -- > 1.7.9.5 > > > _______________________________________________ > iommu mailing list > io...@lists.linux-foundation.org > https://lists.linuxfoundation.org/mailman/listinfo/iommu -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/