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Date: Fri,  1 Mar 2024 16:59:41 -0800
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Subject: [PATCH v2 03/12] perf jevents: Add descriptions to metricgroup abstraction
From: Ian Rogers <irogers@google.com>
To: Peter Zijlstra <peterz@infradead.org>, Ingo Molnar <mingo@redhat.com>, 
	Arnaldo Carvalho de Melo <acme@kernel.org>, Namhyung Kim <namhyung@kernel.org>, 
	Mark Rutland <mark.rutland@arm.com>, 
	Alexander Shishkin <alexander.shishkin@linux.intel.com>, Jiri Olsa <jolsa@kernel.org>, 
	Ian Rogers <irogers@google.com>, Adrian Hunter <adrian.hunter@intel.com>, 
	John Garry <john.g.garry@oracle.com>, Kan Liang <kan.liang@linux.intel.com>, 
	Jing Zhang <renyu.zj@linux.alibaba.com>, Thomas Richter <tmricht@linux.ibm.com>, 
	James Clark <james.clark@arm.com>, linux-kernel@vger.kernel.org, 
	linux-perf-users@vger.kernel.org, Andi Kleen <ak@linux.intel.com>, 
	Kajol Jain <kjain@linux.ibm.com>, Sandipan Das <sandipan.das@amd.com>, 
	Ravi Bangoria <ravi.bangoria@amd.com>, Perry Taylor <perry.taylor@intel.com>, 
	Samantha Alt <samantha.alt@intel.com>, Caleb Biggers <caleb.biggers@intel.com>, 
	Weilin Wang <weilin.wang@intel.com>, Edward Baker <edward.baker@intel.com>, 
	Stephane Eranian <eranian@google.com>
Content-Type: text/plain; charset="UTF-8"

Add a function to recursively generate metric group descriptions.

Signed-off-by: Ian Rogers <irogers@google.com>
---
 tools/perf/pmu-events/metric.py | 14 ++++++++++++--
 1 file changed, 12 insertions(+), 2 deletions(-)

diff --git a/tools/perf/pmu-events/metric.py b/tools/perf/pmu-events/metric.py
index 8a718dd4b1fe..1de4fb72c75e 100644
--- a/tools/perf/pmu-events/metric.py
+++ b/tools/perf/pmu-events/metric.py
@@ -475,6 +475,8 @@ class Metric:
 
     return result
 
+  def ToMetricGroupDescriptions(self, root: bool = True) -> Dict[str, str]:
+    return {}
 
 class _MetricJsonEncoder(json.JSONEncoder):
   """Special handling for Metric objects."""
@@ -493,10 +495,12 @@ class MetricGroup:
   which can facilitate arrangements similar to trees.
   """
 
-  def __init__(self, name: str, metric_list: List[Union[Metric,
-                                                        'MetricGroup']]):
+  def __init__(self, name: str,
+               metric_list: List[Union[Metric, 'MetricGroup']],
+               description: Optional[str] = None):
     self.name = name
     self.metric_list = metric_list
+    self.description = description
     for metric in metric_list:
       metric.AddToMetricGroup(self)
 
@@ -516,6 +520,12 @@ class MetricGroup:
   def ToPerfJson(self) -> str:
     return json.dumps(sorted(self.Flatten()), indent=2, cls=_MetricJsonEncoder)
 
+  def ToMetricGroupDescriptions(self, root: bool = True) -> Dict[str, str]:
+    result = {self.name: self.description} if self.description else {}
+    for x in self.metric_list:
+      result.update(x.ToMetricGroupDescriptions(False))
+    return result
+
   def __str__(self) -> str:
     return self.ToPerfJson()
 
-- 
2.44.0.278.ge034bb2e1d-goog