Arch Linux

magillos

Member

Registered: 2010-07-03

Posts: 34

[Solved] Missing /sys/devices/system/cpu/sched_mc_power_savings

I'm missing two files that are quite desirable on laptop /sys/devices/system/cpu/sched_mc_power_savings and /sys/devices/system/cpu/sched_smt_power_savings. I'm running standard arch 2.6.34 kernel.
   Anything I can do to correct that?[wiki][/wiki]

Last edited by magillos (2010-07-11 18:35:51)

demian

Member

From: Frankfurt, Germany

Registered: 2009-05-06

Posts: 709

Re: [Solved] Missing /sys/devices/system/cpu/sched_mc_power_savings

zgrep SCHED_[SM] /proc/config.gz

Output?

Do you use a cpu frequency module like acpi-cpufreq?

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no place like /home
github

magillos

Member

Registered: 2010-07-03

Posts: 34

Re: [Solved] Missing /sys/devices/system/cpu/sched_mc_power_savings

CONFIG_SCHED_SMT=y
CONFIG_SCHED_MC=y

Yes I use acpi_cpufreq module and it's loaded.

magillos

Member

Registered: 2010-07-03

Posts: 34

Re: [Solved] Missing /sys/devices/system/cpu/sched_mc_power_savings

I compiled my own kernel and it seems that setting processor_type_and_featured->processor_family:core_2 was necessary instead of default Arch's processor_type_and_featured->processor_family'pentium-pro.