linux-kernel - [PATCH v2 0/5] Add JSON metrics for arm CMN and Yitian710 DDR

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Date:   Mon, 24 Apr 2023 17:44:11 +0800
From:   Jing Zhang <renyu.zj@...ux.alibaba.com>
To:     John Garry <john.g.garry@...cle.com>,
        Ian Rogers <irogers@...gle.com>, Will Deacon <will@...nel.org>,
        Shuai Xue <xueshuai@...ux.alibaba.com>
Cc:     James Clark <james.clark@....com>,
        Mike Leach <mike.leach@...aro.org>,
        Leo Yan <leo.yan@...aro.org>,
        Mark Rutland <mark.rutland@....com>,
        Ilkka Koskinen <ilkka@...amperecomputing.com>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Jiri Olsa <jolsa@...nel.org>,
        Namhyung Kim <namhyung@...nel.org>,
        Adrian Hunter <adrian.hunter@...el.com>,
        linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-perf-users@...r.kernel.org,
        Zhuo Song <zhuo.song@...ux.alibaba.com>,
        Jing Zhang <renyu.zj@...ux.alibaba.com>
Subject: [PATCH v2 0/5] Add JSON metrics for arm CMN and Yitian710 DDR

Changes since RFC:
- Refact arm-cmn PMU identifier.
- Not add arm-cmn PMU aliasing currently because it's Eventcode is
  difficult to define.
- Rename ali_drw PMU identifier and Unit name.
- Divide ali_drw PMU metric and aliasing into two patches.

Add an identifier sysfs file for the yitian710 SoC DDR and arm CMN to
allow userspace to identify the specific implementation of the device,
so that the perf tool can match the corresponding uncore events and
metrics through the identifier. Then added several general CMN700 metrics
and yitian710 soc DDR metrics.

$perf list:
...
ali_drw:
  hif_rmw
       [A Read-Modify-Write Op at HIF interface. 64B. Unit: ali_drw]
  hif_hi_pri_rd
       [A high priority Read at HIF interface. 64B. Unit: ali_drw]
  hif_rd
       [A Read Op at HIF interface. 64B. Unit: ali_drw]
  hif_rd_or_wr
       [A Write or Read Op at HIF interface. 64B. Unit: ali_drw]
  hif_wr
       [A Write Op at HIF interface. 64B. Unit: ali_drw]
...

$perf stat -M ddr_read_bandwidth.all ./test

Performance counter stats for 'system wide':

            38,150      hif_rd        #  2.4 MB/s  ddr_read_bandwidth.all
     1,000,957,941 ns   duration_time

       1.000957941 seconds time elapsed

Jing Zhang (5):
  driver/perf: Add identifier sysfs file for CMN
  perf vendor events: Add JSON metrics for CMN-700
  driver/perf: Add identifier sysfs file for Yitian 710 DDR
  perf jevents: Add support for Yitian 710 DDR PMU aliasing
  perf vendor events: Add JSON metrics for Yitian 710 DDR

 drivers/perf/alibaba_uncore_drw_pmu.c              |  27 ++
 drivers/perf/arm-cmn.c                             |  49 +++
 .../arch/arm64/arm/cmn700/sys/metrics.json         |  74 ++++
 .../arm64/freescale/yitian710/sys/ali_drw.json     | 373 +++++++++++++++++++++
 .../arm64/freescale/yitian710/sys/metrics.json     |  20 ++
 tools/perf/pmu-events/jevents.py                   |   2 +
 6 files changed, 545 insertions(+)
 create mode 100644 tools/perf/pmu-events/arch/arm64/arm/cmn700/sys/metrics.json
 create mode 100644 tools/perf/pmu-events/arch/arm64/freescale/yitian710/sys/ali_drw.json
 create mode 100644 tools/perf/pmu-events/arch/arm64/freescale/yitian710/sys/metrics.json

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1.8.3.1