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Message-Id: <20230502223851.2234828-42-irogers@google.com>
Date: Tue, 2 May 2023 15:38:48 -0700
From: Ian Rogers <irogers@...gle.com>
To: Arnaldo Carvalho de Melo <acme@...nel.org>,
Kan Liang <kan.liang@...ux.intel.com>,
Ahmad Yasin <ahmad.yasin@...el.com>,
Peter Zijlstra <peterz@...radead.org>,
Ingo Molnar <mingo@...hat.com>,
Stephane Eranian <eranian@...gle.com>,
Andi Kleen <ak@...ux.intel.com>,
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>,
Mark Rutland <mark.rutland@....com>,
Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
Jiri Olsa <jolsa@...nel.org>,
Namhyung Kim <namhyung@...nel.org>,
Adrian Hunter <adrian.hunter@...el.com>,
Florian Fischer <florian.fischer@...q.space>,
Rob Herring <robh@...nel.org>,
Zhengjun Xing <zhengjun.xing@...ux.intel.com>,
John Garry <john.g.garry@...cle.com>,
Kajol Jain <kjain@...ux.ibm.com>,
Sumanth Korikkar <sumanthk@...ux.ibm.com>,
Thomas Richter <tmricht@...ux.ibm.com>,
Tiezhu Yang <yangtiezhu@...ngson.cn>,
Ravi Bangoria <ravi.bangoria@....com>,
Leo Yan <leo.yan@...aro.org>,
Yang Jihong <yangjihong1@...wei.com>,
James Clark <james.clark@....com>,
Suzuki Poulouse <suzuki.poulose@....com>,
Kang Minchul <tegongkang@...il.com>,
Athira Rajeev <atrajeev@...ux.vnet.ibm.com>,
linux-perf-users@...r.kernel.org, linux-kernel@...r.kernel.org
Cc: Ian Rogers <irogers@...gle.com>
Subject: [PATCH v4 41/44] perf jevents: Don't rewrite metrics across PMUs
Don't rewrite metrics across PMUs as the result events likely won't be
found. Identify metrics with a pair of PMU name and metric name.
Signed-off-by: Ian Rogers <irogers@...gle.com>
---
tools/perf/pmu-events/jevents.py | 4 ++--
tools/perf/pmu-events/metric.py | 28 +++++++++++++++++-----------
tools/perf/pmu-events/metric_test.py | 6 +++---
3 files changed, 22 insertions(+), 16 deletions(-)
diff --git a/tools/perf/pmu-events/jevents.py b/tools/perf/pmu-events/jevents.py
index b18dd2fcbf04..487ff01baf1b 100755
--- a/tools/perf/pmu-events/jevents.py
+++ b/tools/perf/pmu-events/jevents.py
@@ -391,11 +391,11 @@ def read_json_events(path: str, topic: str) -> Sequence[JsonEvent]:
except BaseException as err:
print(f"Exception processing {path}")
raise
- metrics: list[Tuple[str, metric.Expression]] = []
+ metrics: list[Tuple[str, str, metric.Expression]] = []
for event in events:
event.topic = topic
if event.metric_name and '-' not in event.metric_name:
- metrics.append((event.metric_name, event.metric_expr))
+ metrics.append((event.pmu, event.metric_name, event.metric_expr))
updates = metric.RewriteMetricsInTermsOfOthers(metrics)
if updates:
for event in events:
diff --git a/tools/perf/pmu-events/metric.py b/tools/perf/pmu-events/metric.py
index 8ec0ba884673..af58b74d1644 100644
--- a/tools/perf/pmu-events/metric.py
+++ b/tools/perf/pmu-events/metric.py
@@ -552,28 +552,34 @@ def ParsePerfJson(orig: str) -> Expression:
return _Constify(eval(compile(parsed, orig, 'eval')))
-def RewriteMetricsInTermsOfOthers(metrics: List[Tuple[str, Expression]]
- )-> Dict[str, Expression]:
+def RewriteMetricsInTermsOfOthers(metrics: List[Tuple[str, str, Expression]]
+ )-> Dict[Tuple[str, str], Expression]:
"""Shorten metrics by rewriting in terms of others.
Args:
- metrics (list): pairs of metric names and their expressions.
+ metrics (list): pmus, metric names and their expressions.
Returns:
- Dict: mapping from a metric name to a shortened expression.
+ Dict: mapping from a pmu, metric name pair to a shortened expression.
"""
- updates: Dict[str, Expression] = dict()
- for outer_name, outer_expression in metrics:
+ updates: Dict[Tuple[str, str], Expression] = dict()
+ for outer_pmu, outer_name, outer_expression in metrics:
+ if outer_pmu is None:
+ outer_pmu = 'cpu'
updated = outer_expression
while True:
- for inner_name, inner_expression in metrics:
+ for inner_pmu, inner_name, inner_expression in metrics:
+ if inner_pmu is None:
+ inner_pmu = 'cpu'
+ if inner_pmu.lower() != outer_pmu.lower():
+ continue
if inner_name.lower() == outer_name.lower():
continue
- if inner_name in updates:
- inner_expression = updates[inner_name]
+ if (inner_pmu, inner_name) in updates:
+ inner_expression = updates[(inner_pmu, inner_name)]
updated = updated.Substitute(inner_name, inner_expression)
if updated.Equals(outer_expression):
break
- if outer_name in updates and updated.Equals(updates[outer_name]):
+ if (outer_pmu, outer_name) in updates and updated.Equals(updates[(outer_pmu, outer_name)]):
break
- updates[outer_name] = updated
+ updates[(outer_pmu, outer_name)] = updated
return updates
diff --git a/tools/perf/pmu-events/metric_test.py b/tools/perf/pmu-events/metric_test.py
index 40a3c7d8b2bc..ee22ff43ddd7 100755
--- a/tools/perf/pmu-events/metric_test.py
+++ b/tools/perf/pmu-events/metric_test.py
@@ -158,9 +158,9 @@ class TestMetricExpressions(unittest.TestCase):
def test_RewriteMetricsInTermsOfOthers(self):
Expression.__eq__ = lambda e1, e2: e1.Equals(e2)
- before = [('m1', ParsePerfJson('a + b + c + d')),
- ('m2', ParsePerfJson('a + b + c'))]
- after = {'m1': ParsePerfJson('m2 + d')}
+ before = [('cpu', 'm1', ParsePerfJson('a + b + c + d')),
+ ('cpu', 'm2', ParsePerfJson('a + b + c'))]
+ after = {('cpu', 'm1'): ParsePerfJson('m2 + d')}
self.assertEqual(RewriteMetricsInTermsOfOthers(before), after)
Expression.__eq__ = None
--
2.40.1.495.gc816e09b53d-goog
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