config LEGACY_ENERGY_MODEL_DT bool "Legacy DT-based Energy Model of CPUs" default n help The Energy Aware Scheduler (EAS) used to rely on Energy Models (EMs) statically defined in the Device Tree. More recent versions of EAS now rely on the EM framework to get the power costs of CPUs. This driver reads old-style static EMs in DT and feeds them in the EM framework, hence enabling to use EAS on platforms with old DT files. Since EAS now uses only the active costs of CPUs, the cluster-related costs and idle-costs of the old EM are ignored. If in doubt, say N.