[ltp] T40 cpufreq
Marius Gedminas
linux-thinkpad@linux-thinkpad.org
Sun, 17 Aug 2003 13:12:22 +0300
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On Sat, Aug 16, 2003 at 04:04:36PM -0500, Dan Borello wrote:
> I have apm support in my 2.4.21-ac4 kernel. I also am using the cpufreq
> support in the ac patches. When I insmod the proper module,
> speedstep_centrino I see a /proc/cpufreq. I am able to change the
> values and percentages of this file. It seems that they do not take
> affect. /proc/cpuinfo continues to show the speed at which it was
> booted with.
I have a T23. I've added cpufreq patch from Con Kolivas' page to
vanilla 2.4.21. I can change the CPU speed by writing to
/proc/sys/cpu/0/speed, and see the results there, but /proc/cpuinfo
always stays the same.
I assume cpufreq "works", as I see the time regularily jumping backwards
by several microseconds at 866 MHz, and no such effects at 666 MHz.
I think /proc/cpuinfo is just not kept up to date by the patch.
Marius Gedminas
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