On Mon, Jan 29, 2024 at 05:51:37PM +0800, Ji Sheng Teoh wrote: > This patch series adds support for StarFive's Starlink Performance > Monitor Unit(PMU). > StarFive's StarLink PMU integrates one or more CPU cores with > a shared L3 memory system. The PMU supports overflow interrupt, > up to 16 programmable 64bit event counters, and an independent > 64bit cycle counter. > StarLink PMU is accessed via MMIO. > > Example Perf stat output: > [root@user]# perf stat -a -e /starfive_starlink_pmu/cycles/ \ > -e /starfive_starlink_pmu/read_miss/ \ > -e /starfive_starlink_pmu/read_hit/ \ > -e /starfive_starlink_pmu/release_request/ \ > -e /starfive_starlink_pmu/write_hit/ \ > -e /starfive_starlink_pmu/write_miss/ \ > -e /starfive_starlink_pmu/write_request/ \ > -e /starfive_starlink_pmu/writeback/ \ > -e /starfive_starlink_pmu/read_request/ \ > -- openssl speed rsa2048 > Doing 2048 bits private rsa's for 10s: 5 2048 bits private RSA's in > 2.84s > Doing 2048 bits public rsa's for 10s: 169 2048 bits public RSA's in > 2.42s > version: 3.0.11 > built on: Tue Sep 19 13:02:31 2023 UTC > options: bn(64,64) > CPUINFO: N/A > sign verify sign/s verify/s > rsa 2048 bits 0.568000s 0.014320s 1.8 69.8 > ///////// > Performance counter stats for 'system wide': > > 649991998 starfive_starlink_pmu/cycles/ > 1009690 starfive_starlink_pmu/read_miss/ > 1079750 starfive_starlink_pmu/read_hit/ > 2089405 starfive_starlink_pmu/release_request/ > 129 starfive_starlink_pmu/write_hit/ > 70 starfive_starlink_pmu/write_miss/ > 194 starfive_starlink_pmu/write_request/ > 150080 starfive_starlink_pmu/writeback/ > 2089423 starfive_starlink_pmu/read_request/ > > 27.062755678 seconds time elapsed > > Ji Sheng Teoh (4): > perf: starfive: Add StarLink PMU support > dt-bindings: perf: starfive: Add JH8100 StarLink PMU > docs: perf: Add description for StarFive's StarLink PMU > MAINTAINERS: Add entry for StarFive StarLink PMU > > Documentation/admin-guide/perf/index.rst | 1 + > .../perf/starfive_starlink_pmu.rst | 46 ++ > .../perf/starfive,jh8100-starlink-pmu.yaml | 46 ++ > MAINTAINERS | 7 + > drivers/perf/Kconfig | 9 + > drivers/perf/Makefile | 1 + > drivers/perf/starfive_starlink_pmu.c | 643 ++++++++++++++++++ > 7 files changed, 753 insertions(+) > create mode 100644 Documentation/admin-guide/perf/starfive_starlink_pmu.rst > create mode 100644 Documentation/devicetree/bindings/perf/starfive,jh8100-starlink-pmu.yaml > create mode 100644 drivers/perf/starfive_starlink_pmu.c Palmer, are you ok with me taking this via the perf tree? I usually leave the Risc-V stuff for you, but this one doesn't touch the arch code at all. Cheers, Will
