diff options
| -rw-r--r-- | tools/perf/pmu-events/metric.py | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/tools/perf/pmu-events/metric.py b/tools/perf/pmu-events/metric.py index b39189182608..dd8fd06940e6 100644 --- a/tools/perf/pmu-events/metric.py +++ b/tools/perf/pmu-events/metric.py @@ -493,13 +493,15 @@ class MetricGroup: """ def __init__(self, name: str, - metric_list: List[Union[Metric, 'MetricGroup']], + metric_list: List[Union[Optional[Metric], Optional['MetricGroup']]], description: Optional[str] = None): self.name = name - self.metric_list = metric_list + self.metric_list = [] self.description = description for metric in metric_list: - metric.AddToMetricGroup(self) + if metric: + self.metric_list.append(metric) + metric.AddToMetricGroup(self) def AddToMetricGroup(self, group): """Callback used when a MetricGroup is added into another.""" |