i compiled 2.6 kernel - all modules of ACPI and trying to
use cpufreq...
i looked in LQ and found this:
http://thinkwiki.org/wiki/How_to_mak...quency_Scaling
l /sys/devices/system/cpu/cpu0/cpufreq/
total 0
modprobe cpufreq_performance cpufreq_ondemand cpufreq_conservative cpufreq_powersave cpufreq_userspace
FATAL: Error inserting cpufreq_performance (/lib/modules/2.6.122/kernel/drivers/cpufreq/cpufreq_performance.ko): Unknown symbol in module, or unknown parameter (see dmesg)
l /lib/modules/2.6.122/kernel/drivers/cpufreq total 24
-rw-r--r-- 1 root root 3239 2006-08-21 03:38 cpufreq_performance.ko
-rw-r--r-- 1 root root 2783 2006-08-21 03:38 cpufreq_powersave.ko
-rw-r--r-- 1 root root 6244 2006-08-21 03:38 cpufreq_stats.ko
-rw-r--r-- 1 root root 4914 2006-08-21 03:38 freq_table.ko
cpufreq_ondemand is built as part of the kernel
/proc/acpi/processor/CPU0]# cat info
processor id: 0
acpi id: 1
bus mastering control: no
power management: no
throttling control: yes
limit interface: yes
/proc/acpi/processor/CPU0]# cat limit \
>
active limit: P0:T0
user limit: P0:T0
thermal limit: P0:T0
/proc/acpi/processor/CPU0]# cat power
active state: C0
max_cstate: C8
bus master activity: 00000000
states:
/proc/acpi/processor/CPU0]# cat throttling
state count: 8
active state: T0
states:
*T0: 00%
T1: 12%
T2: 25%
T3: 37%
T4: 50%
T5: 62%
T6: 75%
T7: 87%
