Re: [PATCH 0/2 V3] perf/x86/amd: IOMMU Performance Counter Support

From: Suravee Suthikulanit
Date: Mon May 20 2013 - 11:41:48 EST


Please let me know if you have any questions/concerns regarding the PMU implementation.

Please let me know if you have any questions/concerns regarding the changes in the IOMMU driver.

Thank you,


On 5/17/2013 2:43 PM, suravee.suthikulpanit@xxxxxxx wrote:
From: Suravee Suthikulpanit <suravee.suthikulpanit@xxxxxxx>

These patches implement the AMD IOMMU Performance Counter functionality
via custom perf PMU and implement static counting for various IOMMU

1) Extend the AMD IOMMU initialization to include performance
counter enablement.

2) The perf AMD IOMMU PMU to manage performance counters, which
interface with the AMD IOMMU core driver.

Steven L Kinney (1):
perf/x86/amd: Adding IOMMU PC resource management

Suravee Suthikulpanit (1):
perf/x86/amd: AMD IOMMU PC PERF uncore PMU implementation

arch/x86/kernel/cpu/Makefile | 2 +-
arch/x86/kernel/cpu/perf_event_amd_iommu.c | 500 ++++++++++++++++++++++++++++
arch/x86/kernel/cpu/perf_event_amd_iommu.h | 40 +++
drivers/iommu/amd_iommu_init.c | 121 ++++++-
drivers/iommu/amd_iommu_proto.h | 7 +
drivers/iommu/amd_iommu_types.h | 12 +-
6 files changed, 675 insertions(+), 7 deletions(-)
create mode 100644 arch/x86/kernel/cpu/perf_event_amd_iommu.c
create mode 100644 arch/x86/kernel/cpu/perf_event_amd_iommu.h

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