powertop mini2440

Trying to run powertop.  

CONFIG_DEBUG_KERNEL is enabled but I don't get any stats.

< Detailed C-state information is not available.>

Is there something else I need to enable in the kernel?

Thanks,
Dave

I didn't use this tool yet on ARM, but maybe this text from the archive's
README will help you:

[...]
Kernel Parameters:
------------------

PowerTOP needs some kernel config options enabled in order function
properly.
As of linux-3.3.0 these are (list probably incomplete):

CONFIG_NO_HZ
CONFIG_HIGH_RES_TIMERS
CONFIG_HPET_TIMER
CONFIG_CPU_FREQ_GOV_ONDEMAND
CONFIG_USB_SUSPEND
CONFIG_SND_AC97_POWER_SAVE
CONFIG_TIMER_STATS
CONFIG_PERF_EVENTS
CONFIG_PERF_COUNTERS
CONFIG_TRACEPOINTS
CONFIG_TRACING
CONFIG_EVENT_POWER_TRACING_DEPRECATED
ACPI_PROCFS_POWER
[...]

At least the "ACPI"-keyword in the list suggests x86 architecture. Also the
"C-state" error message you face makes me feel it will work on x86 only.
But I'm not sure.

Thanks.

I read some comments about it may not work on ARM platforms.  3 or 4
suggestions are given at random every 5 seconds, one of them suggesting to
enable CONFIG_NO_HZ

Spent quite a bit of time reading about tickless kernels becoming the norm
back in 2.6.? then noticed the default on 3.7.1-ptx-2012.12.0 was
CONFIG_NO_HZ disabled.

Which README are you reading?  The one in the powertop-1.11 folder says
nothing about kernel options.

Dave

The README in this archive:

https://01.org/powertop/sites/default/files/downloads/powertop-2.3.tar.gz