[PATCH v7 0/2] Add ThunderX2 SoC Performance Monitoring Unit driver

From: Kulkarni, Ganapatrao
Date: Thu Oct 25 2018 - 01:59:25 EST


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

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2.18.0