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    SubjectRE: [PATCH v2 0/4] arm64 SMMUv3 PMU driver with IORT support
    Date
    Hi Lorenzo/Robin,

    Just a gentle ping on this series. This is a v2 for smmu pmcg support
    based on Neil Leeder's v1[1].

    Main changes include,
    -an helper function to IORT to retrieve the associated SMMU info.
    -MSI support to the PMU driver.

    Please take a look and let me know your thoughts.

    Thanks,
    Shameer

    [1]https://www.spinics.net/lists/arm-kernel/msg598591.html

    > -----Original Message-----
    > From: Linuxarm [mailto:linuxarm-bounces@huawei.com] On Behalf Of
    > Shameer Kolothum
    > Sent: 24 July 2018 12:45
    > To: lorenzo.pieralisi@arm.com; robin.murphy@arm.com
    > Cc: mark.rutland@arm.com; vkilari@codeaurora.org;
    > neil.m.leeder@gmail.com; pabba@codeaurora.org; will.deacon@arm.com;
    > rruigrok@codeaurora.org; Linuxarm <linuxarm@huawei.com>; linux-
    > kernel@vger.kernel.org; linux-acpi@vger.kernel.org; linux-arm-
    > kernel@lists.infradead.org
    > Subject: [PATCH v2 0/4] arm64 SMMUv3 PMU driver with IORT support
    >
    > This adds a driver for the SMMUv3 PMU into the perf framework.
    > It includes an IORT update to support PM Counter Groups.
    >
    > This is based on the initial work done by Neil Leeder[1]
    >
    > SMMUv3 PMCG devices are named as arm_smmu_v3_x_pmcg_y where x
    > denotes the associated smmuv3 dev id(if any) and y denotes the
    > pmu dev id.
    >
    > Usage example:
    > For common arch supported events:
    > perf stat -e arm_smmu_v3_0_pmcg_6/transaction,filter_enable=1,
    > filter_span=1,filter_stream_id=0x42/ -a pwd
    >
    > For IMP DEF events:
    > perf stat -e arm_smmu_v3.0_pmcg.6/event=id/ -a pwd
    >
    > Sanity tested on HiSilicon platform. Further testing on supported
    > platforms are very much welcome.
    >
    > v1 --> v2
    >
    > - Addressed comments from Robin.
    > - Added an helper to retrieve the associated smmu dev and named PMUs
    > to make the association visible to user.
    > - Added MSI support for overflow irq
    >
    > [1]https://www.spinics.net/lists/arm-kernel/msg598591.html
    >
    > Neil Leeder (2):
    > acpi: arm64: add iort support for PMCG
    > perf: add arm64 smmuv3 pmu driver
    >
    > Shameer Kolothum (2):
    > acpi: arm64: iort helper to find the associated smmu of pmcg node
    > perf/smmuv3: Add MSI irq support
    >
    > drivers/acpi/arm64/iort.c | 179 +++++++--
    > drivers/perf/Kconfig | 9 +
    > drivers/perf/Makefile | 1 +
    > drivers/perf/arm_smmuv3_pmu.c | 901
    > ++++++++++++++++++++++++++++++++++++++++++
    > include/linux/acpi_iort.h | 4 +
    > 5 files changed, 1063 insertions(+), 31 deletions(-)
    > create mode 100644 drivers/perf/arm_smmuv3_pmu.c
    >
    > --
    > 2.7.4
    >
    >
    > _______________________________________________
    > Linuxarm mailing list
    > Linuxarm@huawei.com
    > http://hulk.huawei.com/mailman/listinfo/linuxarm

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