The help text says "Use ACPI tables to decode..." but there is no such option. However there is "ACPI Processor P-states driver", which seems to be meant. Reproducible: Always Steps to Reproduce: 1. cd /usr/src/linux-2.6.23-gentoo-r3 2. make menuconfig 3. select "Power management options (ACPI, APM) --->" 4. select "CPU Frequency Scaling --->" 5. Open help for "Intel Enhanced SpeedStep". Actual Results: The text says: However, you also need to say Y to "Use ACPI tables to decode..." below [which might imply enabling ACPI] if you want to use this driver on non-Banias CPUs. Expected Results: The text should say: However, you also need to say Y to "ACPI Processor P-states driver" above [which might imply enabling ACPI] if you want to use this driver on non-Banias CPUs. Note the change: -"Use ACPI tables to decode..." below +"ACPI Processor P-states driver" above I had no /sys/devices/system/cpu. Then I enabled "ACPI Processor P-states driver", rebuilt, copied to /boot and rebooted. Now I have /sys/devices/system/cpu so "ACPI Processor P-states driver" seems to be the correct option indeed.
Thanks for this but this driver is deprecated in 2.6.24. CONFIG_X86_SPEEDSTEP_CENTRINO: This is deprecated and this functionality is now merged into acpi_cpufreq X86_ACPI_CPUFREQ). Use that driver instead of speedstep_centrino. The suggested driver (X86_ACPI_CPU_FREQ) contains the text you referenced: (Prompt: ACPI Processor P-States driver) <*> ACPI Processor P-States driver Please note that at this time we have no plans to release an additional gentoo-sources-2.6.23-rX kernel.
