This patchset adds PMU driver for Cavium's ThunderX2 SoC UNCORE devices. The SoC has PMU support in L3 cache controller (L3C) and in the DDR4 Memory Controller (DMC). v7: Incorporated review comments [3]. Modified driver as loadable module. Updated Documentation with Event description. Removed per-channel(no SMC calls) sampling implementation( Since DMC and L3C channels are interleave, we have decided to sample channel zero and prorate it to account for a Device). [3] https://patchwork.kernel.org/patch/10479203/ v6: Rebased to 4.18-rc1 Updated with comments from John Garry[3] [3] https://lkml.org/lkml/2018/5/17/408 v5: Incorporated review comments from Mark Rutland[2] v4: Incorporated review comments from Mark Rutland[1] [1] https://www.spinics.net/lists/arm-kernel/msg588563.html [2] https://lkml.org/lkml/2018/4/26/376 v3: Fixed warning reported by kbuild robot v2: Rebased to 4.12-rc1 Removed Arch VULCAN dependency. Update SMC call parameters as per latest firmware. v1: Initial patch Ganapatrao Kulkarni (2): perf, uncore: Adding documentation for ThunderX2 pmu uncore driver ThunderX2, perf : Add Cavium ThunderX2 SoC UNCORE PMU driver Documentation/perf/thunderx2-pmu.txt | 106 ++++ drivers/perf/Kconfig | 9 + drivers/perf/Makefile | 1 + drivers/perf/thunderx2_pmu.c | 867 +++++++++++++++++++++++++++ include/linux/cpuhotplug.h | 1 + 5 files changed, 984 insertions(+) create mode 100644 Documentation/perf/thunderx2-pmu.txt create mode 100644 drivers/perf/thunderx2_pmu.c -- 2.18.0
