15d902ee5SPerry Yuan# SPDX-License-Identifier: GPL-2.0-only 25d902ee5SPerry Yuan# 35d902ee5SPerry Yuan# AMD Hardware Feedback Interface Driver 45d902ee5SPerry Yuan# 55d902ee5SPerry Yuan 65d902ee5SPerry Yuanconfig AMD_HFI 75d902ee5SPerry Yuan bool "AMD Hetero Core Hardware Feedback Driver" 85d902ee5SPerry Yuan depends on ACPI 95d902ee5SPerry Yuan depends on CPU_SUP_AMD 10*216fe0d7SMario Limonciello depends on SCHED_MC_PRIO 115d902ee5SPerry Yuan help 125d902ee5SPerry Yuan Select this option to enable the AMD Heterogeneous Core Hardware 135d902ee5SPerry Yuan Feedback Interface. If selected, hardware provides runtime thread 145d902ee5SPerry Yuan classification guidance to the operating system on the performance and 155d902ee5SPerry Yuan energy efficiency capabilities of each heterogeneous CPU core. These 165d902ee5SPerry Yuan capabilities may vary due to the inherent differences in the core types 175d902ee5SPerry Yuan and can also change as a result of variations in the operating 185d902ee5SPerry Yuan conditions of the system such as power and thermal limits. 19