# # CPU Frequency scaling # menu "CPU Frequency scaling" config CPU_FREQ bool "CPU Frequency scaling" help Clock scaling allows you to change the clock speed of CPUs on the fly. This is a nice method to save battery power on notebooks, because the lower the clock speed, the less power the CPU consumes. For more information, take a look at or at If in doubt, say N. source "drivers/cpufreq/Kconfig" config CPU_FREQ_TABLE tristate "CPU frequency table helpers" depends on CPU_FREQ default y help Many CPUFreq drivers use these helpers, so only say N here if the CPUFreq driver of your choice doesn't need these helpers. If in doubt, say Y. comment "CPUFreq processor drivers" depends on CPU_FREQ config X86_POWERNOW_K8 tristate "AMD Opteron/Athlon64 PowerNow!" depends on CPU_FREQ_TABLE help This adds the CPUFreq driver for mobile AMD Opteron/Athlon64 processors. For details, take a look at . If in doubt, say N. endmenu