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The Linux kernel configuration item CONFIG_CPU_THERMAL
has multiple definitions:
drivers/thermal/Kconfig
The configuration item CONFIG_CPU_THERMAL:
CONFIG_THERMAL_OF
cpu_cooling
Enable the CPU cooling features. If the system has no active cooling device available, this option allows to use the CPU as a cooling device.
drivers/thermal/Kconfig
The configuration item CONFIG_CPU_THERMAL:
( CONFIG_CPU_FREQ ) && ( CONFIG_THERMAL_OF ) && ( CONFIG_THERMAL = CONFIG_y )
cpu_cooling
This implements the generic cpu cooling mechanism through frequency reduction. An ACPI version of this already exists (drivers/acpi/processor_thermal.c). This will be useful for platforms using the generic thermal interface and not the ACPI interface.
If you want this support, you should say Y here.
drivers/thermal/Kconfig
The configuration item CONFIG_CPU_THERMAL:
CONFIG_CPU_FREQ
cpu_cooling
This implements the generic cpu cooling mechanism through frequency reduction, cpu hotplug and any other ways of reducing temperature. An ACPI version of this already exists(drivers/acpi/processor_thermal.c). This will be useful for platforms using the generic thermal interface and not the ACPI interface. If you want this support, you should say Y here.
Raw data from LKDDb:
lkddb module cpu_cooling CONFIG_CPU_THERMAL : drivers/thermal/Kconfig : "generic cpu cooling support" # in 3.8–3.9
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