CONFIG_ACPI_CPPC_LIB (not configurable)

modulename: cppc_acpi.ko

and/or

cppc_msr.ko

configname: CONFIG_ACPI_CPPC_LIB

Linux Kernel Configuration
└─>Power management and ACPI options
└─>ACPI (Advanced Configuration and Power Interface) Support
└─>ACPI_CPPC_LIB
In linux kernel since version 3.10 (release Date: 2013-06-30)  
If this option is enabled, this file implements common functionality
to parse CPPC tables as described in the ACPI 5.1+ spec. The
routines implemented are meant to be used by other
drivers to control CPU performance using CPPC semantics.
If your platform does not support CPPC in firmware,
leave this option disabled.

source code:
drivers/acpi/cppc_acpi.c