feat(qrm): Support for OOM priority as a QoS enhancement

Signed-off-by: ricky <[email protected]>

pkg/consts/qos.go

@@ -37,6 +37,8 @@ const (
 
 	PodAnnotationMemoryEnhancementNumaExclusive       = "numa_exclusive"
 	PodAnnotationMemoryEnhancementNumaExclusiveEnable = "true"
+
+	PodAnnotationMemoryEnhancementOOMPriority = "oom_priority"
 )
 
 // const variables for pod annotations about qos level enhancement in cpu

pkg/consts/qrm.go

@@ -0,0 +1,31 @@
+/*
+Copyright 2022 The Katalyst Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package consts
+
+// QRMPhase is the phase of each rpc call in qrm plugin lifecycle
+type QRMPhase int
+
+const (
+	QRMPhaseGetTopologyHints QRMPhase = iota
+	QRMPhaseRemovePod
+	QRMPhaseGetResourcesAllocation
+	QRMPhaseGetTopologyAwareResources
+	QRMPhaseGetTopologyAwareAllocatableResources
+	QRMPhaseGetResourcePluginOptions
+	QRMPhaseAllocate
+	QRMPhasePreStartContainer
+)