linux-kernel - [PATCH v5 0/3] Python generated Arm64 metrics

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Message-ID: <20250829053235.21994-1-irogers@google.com>
Date: Thu, 28 Aug 2025 22:32:32 -0700
From: Ian Rogers <irogers@...gle.com>
To: Peter Zijlstra <peterz@...radead.org>, Ingo Molnar <mingo@...hat.com>, 
	Arnaldo Carvalho de Melo <acme@...nel.org>, Namhyung Kim <namhyung@...nel.org>, 
	Mark Rutland <mark.rutland@....com>, 
	Alexander Shishkin <alexander.shishkin@...ux.intel.com>, Jiri Olsa <jolsa@...nel.org>, 
	Ian Rogers <irogers@...gle.com>, Adrian Hunter <adrian.hunter@...el.com>, 
	Kan Liang <kan.liang@...ux.intel.com>, James Clark <james.clark@...aro.org>, 
	Xu Yang <xu.yang_2@....com>, linux-kernel@...r.kernel.org, 
	linux-perf-users@...r.kernel.org, John Garry <john.g.garry@...cle.com>, 
	Jing Zhang <renyu.zj@...ux.alibaba.com>, Sandipan Das <sandipan.das@....com>, 
	Benjamin Gray <bgray@...ux.ibm.com>, Leo Yan <leo.yan@....com>
Subject: [PATCH v5 0/3] Python generated Arm64 metrics

Generate two sets of additional metrics for Arm64, where the topdown
set decomposes yet further. The metrcs primarily use json events,
where the json contains architecture standard events. Not all events
are in the json, such as for a53 where the events are in
sysfs. Workaround this by adding the sysfs events to the metrics but
longer-term such events should be added to the json.

The patches should be applied on top of:
https://lore.kernel.org/lkml/20250829041104.4186320-1-irogers@google.com/

v5. Rebase. Address review comments from Leo Yan
    <leo.yan@....com>. Prefix all metric names with lpm_ (short for
    Linux Perf Metric) so that python generated metrics are clearly
    namespaced. Use cpu-cycles rather than cycles legacy event for
    cycles metrics to avoid confusion with ARM PMUs. Add patch that
    checks events to ensure all possible event names are present in at
    least one json file.

v4. Tweak to build dependencies and rebase.
    https://lore.kernel.org/lkml/20240926175709.410022-1-irogers@google.com/

v3. Some minor code cleanup changes.
    https://lore.kernel.org/lkml/20240314055801.1973422-1-irogers@google.com/

v2. The cycles metrics are now made common and shared with AMD and
    Intel, suggested by Kan Liang <kan.liang@...ux.intel.com>. This
    assumes these patches come after the AMD and Intel sets.
    https://lore.kernel.org/lkml/20240301184942.2660478-1-irogers@google.com/

v1. https://lore.kernel.org/lkml/20240229001325.4157655-1-irogers@google.com/

Ian Rogers (3):
  perf jevents: Add collection of topdown like metrics for arm64
  perf jevents: Add cycles breakdown metric for arm64/AMD/Intel
  perf jevents: Validate that all names given an Event

 tools/perf/pmu-events/Build             |   2 +-
 tools/perf/pmu-events/amd_metrics.py    |   3 +
 tools/perf/pmu-events/arm64_metrics.py  | 150 +++++++++++++++++++++++-
 tools/perf/pmu-events/common_metrics.py |  18 +++
 tools/perf/pmu-events/intel_metrics.py  |   2 +
 tools/perf/pmu-events/metric.py         |  37 ++++++
 6 files changed, 207 insertions(+), 5 deletions(-)
 create mode 100644 tools/perf/pmu-events/common_metrics.py

-- 
2.51.0.318.gd7df087d1a-goog