kubernetes/pkg/apis/scheduling/v1/helpers.go

var systemPriorityClasses …

// SystemPriorityClasses returns the list of system priority classes.
// NOTE: be careful not to modify any of elements of the returned array directly.
func SystemPriorityClasses() []*v1.PriorityClass { … }

// IsKnownSystemPriorityClass returns true if there's any of the system priority classes exactly
// matches "name", "value", "globalDefault". otherwise it will return an error.
func IsKnownSystemPriorityClass(name string, value int32, globalDefault bool) (bool, error) { … }