Trying to compile a kernel module

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Trying to compile a kernel module

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Started 12 years ago by MendelGusmao
Latest reply from dariosalvi
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MendelGusmao

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Well, I've installed SliTaz on my Eee 900 after decided to turn it in a NAS because its LCD screen got broken a few weeks ago. Now I need to use a kernel module called eee.ko to adjust the processor's clock because when setted to 900 MHz it goes real hot and it's not proper for a device that will be working 24/7.

When I try to compile with make, I get a message saying that /lib/modules/2.6.30.6-slitaz/build doesn't exist. I tried to install linux-source from tazpkg but it hangs when connecting to http://www.eu.kernel.org. I think it was taken offline when kernel.org detected a flaw in its servers security.

So, my questions are:
- Am I doing it right?
- The origin of the files in build directory under /lib/modules/.../ is eu.kernel.org?
- If positive, how do I change the source of the files?

Thanks!

Posted 12 years ago #
kultex

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why eee.ko - try this:

http://doc.slitaz.org/en:guides:cpu-frequency

Posted 12 years ago #
MendelGusmao

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Thank you, kultex!

Well, I thought of it first because when the Eee had Windows installed, I was using eeectl to control the processor speed directly, almost with fine-tuning and this approached looked fine to be used in SliTaz.

I installed those packages but it didn't work:

mendel@servidor:~$ modprobe acpi-cpufreq
insmod: cannot insert '/lib/modules/2.6.30.6-slitaz/kernel/arch/x86/kernel/cpu/cpufreq/acpi-cpufreq.ko.gz': Operation not permitted
modprobe: failed to load module acpi-cpufreq: No such file or directory

Posted 12 years ago #
kultex

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its because you cannot load a module as user - you must be root

Posted 12 years ago #
MendelGusmao

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Oh, sorry, I posted the wrong line.

Even logged as root it gives me that error

Posted 12 years ago #
mojo

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Did you install the tazpkg that owns acpi-cpufreq ?
#tazpkg get-install linux-cpufreq --forced
#modprobe -l | grep -i acpi-cpufreq

Posted 12 years ago #
MendelGusmao

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Yes, it is installed and the modprobe line returns a valid path...

I'm confused about what module I must choose to control a Celeron M 353 ULV processor

Also, doc.slitaz.org is not loading right now

Thank you guys for trying to help!

Posted 12 years ago #
kultex

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as far as I know, old Celerons dont speedstep...

http://www.computing.net/answers/cpus/pentium-m-vs-celeron-m/10977.html

only newer ones do

Posted 12 years ago #
mojo

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@MendelGusmao
Welcome to SliTaz
Tank replicas for mirrored backup:
http://mirror.slitaz.org/info/
http://mirror.slitaz.org/doc/
http://mirror.slitaz.org/www/
http://mirror.slitaz.org/hg/
http://mirror.slitaz.org/pkgs/

Posted 12 years ago #
MendelGusmao

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Well, if the packages described in en:guides:cpu-frequency aren't compatible with my processor, I think I will get back to the idea of compiling the eee.ko, which makes me ask how can I tell tazpkg to not to request data from http://www.eu.kernel.org and use another host that is up, instead.

Once again, thanks!

Posted 12 years ago #
mojo

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root@slitaz:# cat /usr/src/linux-2.6.30.6-slitaz/slitaz/url
http://www.kernel.org/pub/linux/kernel/v2.6/linux-2.6.30.6.tar.bz2

linux-source url was changed so it works.
I just tested on a clean install of slitaz-3.0

Posted 12 years ago #
kultex

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@MendelGusmao

I dont want to keep you away from compiling, but when I reed the project site http://code.google.com/p/eeepc-linux/ it tells olny, that this module allows the eee pc to run on 900 MHz - by default its running on 633 Mhz - and it is not scaling.
And I think, that Asus did this only because of temerature problems....

Posted 12 years ago #
MendelGusmao

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@mojo I tested with a clean install in a vbox and it worked fine! Later I'll try in my Eee

@kultex Yeah, it was first designed to allow the older Eees to run at 900 MHz by providing a way to set the FSB directly, so, it's possible to set any FSB value

http://wiki.eeeuser.com/howto:overclockfsb

Thanks, guys!

Posted 12 years ago #
mojo

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You will have to compile i2c_i801 module :

http://wiki.eeeuser.com/howto:overclockfsb
"Before the version 0.2 eee.ko module can be installed, the i2c_i801.ko module must be installed, since eee.ko uses that interface to the hardware.'

root@slitaz:/home/tux# zcat /proc/config.gz | grep -i i2c_i801
# CONFIG_I2C_I801 is not set

Posted 12 years ago #
MendelGusmao

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I think it's just put i2c_i801.c in modules/ with eee.c, add "obj-m += i2c_i801.o" to Makefile and run make, am I right?

Posted 12 years ago #

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