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-boun...@huawei.com] On Behalf Of > Shameer Kolothum > Sent: 24 July 2018 12:45 > To: lorenzo.pieral...@arm.com; robin.mur...@arm.com > Cc: mark.rutl...@arm.com; vkil...@codeaurora.org; > neil.m.lee...@gmail.com; pa...@codeaurora.org; will.dea...@arm.com; > rruig...@codeaurora.org; Linuxarm <linux...@huawei.com>; linux- > ker...@vger.kernel.org; linux-a...@vger.kernel.org; linux-arm- > ker...@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 > linux...@huawei.com > http://hulk.huawei.com/mailman/listinfo/linuxarm
