Skip PreScore when the TopologySpreadConstraints is specified

`DefaultPodTopologySpread` need't score when the `TopologySpreadConstraints`
is specified.

`PreScore` needn't do this as well, this cut off the cost of `PreScore` if
possible.

Signed-off-by: Dave Chen <[email protected]>

Author: chendave

pkg/scheduler/framework/plugins/defaultpodtopologyspread/default_pod_topology_spread.go

@@ -171,6 +171,9 @@ func (pl *DefaultPodTopologySpread) ScoreExtensions() framework.ScoreExtensions
 
 // PreScore builds and writes cycle state used by Score and NormalizeScore.
 func (pl *DefaultPodTopologySpread) PreScore(ctx context.Context, cycleState *framework.CycleState, pod *v1.Pod, nodes []*v1.Node) *framework.Status {
+	if skipDefaultPodTopologySpread(pod) {
+		return nil
+	}
 	var selector labels.Selector
 	informerFactory := pl.handle.SharedInformerFactory()
 	selector = helper.DefaultSelector(