From: Ian Rogers <irogers@google.com>
Date: Tue, 2 Dec 2025 17:50:01 +0000 (-0800)
Subject: perf jevents: Allow metric groups not to be named
X-Git-Tag: v6.19-rc1~61^2~53
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=e90c66c37c646962d5a7e525f5e04c75ea31f167;p=thirdparty%2Flinux.git

perf jevents: Allow metric groups not to be named

It can be convenient to have unnamed metric groups for the sake of
organizing other metrics and metric groups. An unspecified name
shouldn't contribute to the MetricGroup json value, so don't record
it.

Signed-off-by: Ian Rogers <irogers@google.com>
Tested-by: Thomas Falcon <thomas.falcon@intel.com>
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
---

diff --git a/tools/perf/pmu-events/metric.py b/tools/perf/pmu-events/metric.py
index 1de4fb72c75ed..847b614d40d5f 100644
--- a/tools/perf/pmu-events/metric.py
+++ b/tools/perf/pmu-events/metric.py
@@ -455,7 +455,8 @@ class Metric:
 
   def AddToMetricGroup(self, group):
     """Callback used when being added to a MetricGroup."""
-    self.groups.add(group.name)
+    if group.name:
+      self.groups.add(group.name)
 
   def Flatten(self) -> Set['Metric']:
     """Return a leaf metric."""