Set default CPU period and quota for LCOW containers

For LCOW containers, if the CPU Period and Quota are not set in the Linux Resource Limits, then we set the default values for the same. This commit adds the change.

Signed-off-by: Harsh Rawat <harshrawat@microsoft.com>

Author: rawahars

internal/hcsoci/hcsdoc_lcow.go

@@ -16,6 +16,19 @@ import (
 )
 
 func createLCOWSpec(ctx context.Context, coi *createOptionsInternal) (*specs.Spec, error) {
+	// Set default CPU period and quota if not set for LCOW containers.
+	if coi.Spec.Linux != nil &&
+		coi.Spec.Linux.Resources != nil &&
+		coi.Spec.Linux.Resources.CPU != nil {
+
+		if coi.Spec.Linux.Resources.CPU.Period != nil && *coi.Spec.Linux.Resources.CPU.Period == 0 {
+			*coi.Spec.Linux.Resources.CPU.Period = 100000 // Default CPU period
+		}
+		if coi.Spec.Linux.Resources.CPU.Quota != nil && *coi.Spec.Linux.Resources.CPU.Quota == 0 {
+			*coi.Spec.Linux.Resources.CPU.Quota = -1 // No CPU limit
+		}
+	}
+
 	// Remarshal the spec to perform a deep copy.
 	j, err := json.Marshal(coi.Spec)
 	if err != nil {