linux-kernel - [PATCH v1 04/20] perf jevents: Add tsx metric group for Intel models

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Date: Wed, 28 Feb 2024 16:17:49 -0800
From: Ian Rogers <irogers@...gle.com>
To: Perry Taylor <perry.taylor@...el.com>, Samantha Alt <samantha.alt@...el.com>, 
	Caleb Biggers <caleb.biggers@...el.com>, Weilin Wang <weilin.wang@...el.com>, 
	Edward Baker <edward.baker@...el.com>, Andi Kleen <ak@...ux.intel.com>, 
	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>, 
	John Garry <john.g.garry@...cle.com>, Kan Liang <kan.liang@...ux.intel.com>, 
	Jing Zhang <renyu.zj@...ux.alibaba.com>, Thomas Richter <tmricht@...ux.ibm.com>, 
	James Clark <james.clark@....com>, linux-kernel@...r.kernel.org, 
	linux-perf-users@...r.kernel.org, Stephane Eranian <eranian@...gle.com>
Subject: [PATCH v1 04/20] perf jevents: Add tsx metric group for Intel models

Allow duplicated metric to be dropped from json files.

Signed-off-by: Ian Rogers <irogers@...gle.com>
---
 tools/perf/pmu-events/intel_metrics.py | 51 ++++++++++++++++++++++++++
 1 file changed, 51 insertions(+)

diff --git a/tools/perf/pmu-events/intel_metrics.py b/tools/perf/pmu-events/intel_metrics.py
index 20c25d142f24..1096accea2aa 100755
--- a/tools/perf/pmu-events/intel_metrics.py
+++ b/tools/perf/pmu-events/intel_metrics.py
@@ -7,6 +7,7 @@ import argparse
 import json
 import math
 import os
+from typing import Optional
 
 parser = argparse.ArgumentParser(description="Intel perf json generator")
 parser.add_argument("-metricgroups", help="Generate metricgroups data", action='store_true')
@@ -77,10 +78,60 @@ def Smi() -> MetricGroup:
     ])
 
 
+def Tsx() -> Optional[MetricGroup]:
+    if args.model not in [
+        'alderlake',
+        'cascadelakex',
+        'icelake',
+        'icelakex',
+        'rocketlake',
+        'sapphirerapids',
+        'skylake',
+        'skylakex',
+        'tigerlake',
+    ]:
+        return None
+
+    pmu = "cpu_core" if args.model == "alderlake" else "cpu"
+    cycles = Event('cycles')
+    cycles_in_tx = Event(f'{pmu}/cycles\-t/')
+    transaction_start = Event(f'{pmu}/tx\-start/')
+    cycles_in_tx_cp = Event(f'{pmu}/cycles\-ct/')
+    metrics = [
+        Metric('tsx_transactional_cycles',
+                      'Percentage of cycles within a transaction region.',
+                      Select(cycles_in_tx / cycles, has_event(cycles_in_tx), 0),
+                      '100%'),
+        Metric('tsx_aborted_cycles', 'Percentage of cycles in aborted transactions.',
+                      Select(max(cycles_in_tx - cycles_in_tx_cp, 0) / cycles,
+                                    has_event(cycles_in_tx),
+                                    0),
+                      '100%'),
+        Metric('tsx_cycles_per_transaction',
+                      'Number of cycles within a transaction divided by the number of transactions.',
+                      Select(cycles_in_tx / transaction_start,
+                                    has_event(cycles_in_tx),
+                                    0),
+                      "cycles / transaction"),
+    ]
+    if args.model != 'sapphirerapids':
+        elision_start = Event(f'{pmu}/el\-start/')
+        metrics += [
+            Metric('tsx_cycles_per_elision',
+                          'Number of cycles within a transaction divided by the number of elisions.',
+                          Select(cycles_in_tx / elision_start,
+                                        has_event(elision_start),
+                                        0),
+                          "cycles / elision"),
+        ]
+    return MetricGroup('transaction', metrics)
+
+
 all_metrics = MetricGroup("", [
     Idle(),
     Rapl(),
     Smi(),
+    Tsx(),
 ])
 
 if args.metricgroups:
-- 
2.44.0.278.ge034bb2e1d-goog