Actually, by version, I meant the cpufreq version... i.e. if the one you just compiled is an older revision than the one included with DSL-N.Althought I'm using the most recent cpufreq patch I could find for DSL/2.4.26, for sure this is older than the version of cpufreq included in the kernel in DSL-N/2.6.12 - but this got me to thinking...
I discovered the interface to cpufreq is different in 2.4.x to that in 2.6.x When I look at /proc/cpufreq in DSL (it doesn't exist in DSL-N) before and after loading a cpufreq module, I see the following:
# cat /proc/cpufreq minimum CPU frequency - maximum CPU frequency - policy # insmod p4-clockmod Using /lib/modules/2.4.26/kernel/arch/i386/kernel/p4-clockmod.o # cat /proc/cpufreq minimum CPU frequency - maximum CPU frequency - policy CPU 0 199357 kHz ( 12 %) - 1594858 kHz (100 %) - performance
Trawling Google on /proc/cpufreq turned up all kinds of info - I smell the home straight in sight, watch this space...Well http://www.kernel.org/pub/linux/utils/kernel/cpufreq/cpufreq.html seems to indicate that they are only backports. And the last one (which I think you used), was made just over 2 years ago. So perhaps your cpu setup is newer and/or that revision doesn't support it. I guess this is one reason why new laptop users like 2.6 kernels...Finally, I got there - thanks to all who helped - unfortunately, it seems that in 2.4.26 I will have to be content with the p4-clockmod module for cpufreq rather than the speedstep-centrino module. Anyway, here's how to do this for anybody that might be interested.
Materials required:
Download gcc-2.95.dsl, gcc1-with-libs.dsl & gnu-utils.dsl from the DSL repository Download linux-2.4.26.tar.gz from "www.kernel.org" or mirror sites Obtain knoppix 3.4 kernel patch and .config Download cpufreq-LINUX_2_4-20040813.tar.gz from http://ftp.linux.org.uk/pub/linux/cpufreq/ Make a copy of the instructions for fixing the broken 2.4.26 drmP.h file at http://lkml.org/lkml/2004/4/19/202
# cd /ramdisk/kernelsource/linux-2.4.26 # make mrproper
Overwrite the default configuration with the knoppix kernel configuration and select the required cpufreq options for your cpu:
# cp -f /path-to-file/.config /ramdisk/kernelsource/linux-2.4.26/arch/i386/defconfig # make oldconfig
# # CPU Frequency scaling # CONFIG_CPU_FREQ=y CONFIG_CPU_FREQ_TABLE=y CONFIG_CPU_FREQ_PROC_INTF=y CONFIG_CPU_FREQ_GOV_USERSPACE=y CONFIG_CPU_FREQ_24_API=y # CONFIG_X86_POWERNOW_K6 is not set # CONFIG_X86_POWERNOW_K7 is not set # CONFIG_X86_POWERNOW_K8 is not set # CONFIG_X86_LONGHAUL is not set # CONFIG_X86_SPEEDSTEP_PIIX4 is not set # CONFIG_X86_SPEEDSTEP_SMI is not set # CONFIG_X86_SPEEDSTEP_ICH is not set # CONFIG_X86_SPEEDSTEP_CENTRINO is not set CONFIG_X86_P4_CLOCKMOD=m # CONFIG_X86_LONGRUN is not set # CONFIG_X86_GX_SUSPMOD is not set
Build dependencies and cleanup:
# make dep # make clean
Build kernel boot image, copy to the root directory of your USB stick & make rw:
# make bzImage # make install # cp /boot/vmlinuz-2.4.26 /path-to-boot-usb-root-dir/vmlinuz # rdev -R /path-to-boot-usb-root-dir/vmlinuz 0
Build new cpufreq module and save it:
# make modules # make modules_install # cp /lib/modules/2.4.26/kernel/arch/i386/kernel/p4-clockmod.o /path-to-safe-place
Reboot chosing vmlinuz at boot prompt, install new module and get setup:
Modify /etc/cpufreqd.conf to your taste then check things work:
# cat /proc/cpufreq minimum CPU frequency - maximum CPU frequency - policy CPU 0 199354 kHz ( 12 %) - 1594837 kHz (100 %) - performance
# cpufreqd -V5 -D parse_config(): Rule "conservative" has Profile "lo_boost" parse_config(): Rule "lo_cpu_boost" has Profile "medium_boost" parse_config(): Rule "hi_cpu_boost" has Profile "medium_boost" parse_config(): Rule "AC_on" has Profile "hi_boost" Starting operations. libsys_init(): ACPICA version 20040326 set_policy(): 66%100%performance - profile name: hi_boost. main_loop(): profile set "hi_boost" for rule "AC_on".
[remove power cord]
set_policy(): 0%33%performance - profile name: lo_boost. main_loop(): profile set "lo_boost" for rule "conservative".
<ctrl-c>
Caught INT signal (Interrupt).
# cat /proc/cpufreq minimum CPU frequency - maximum CPU frequency - policy CPU 0 199354 kHz ( 12 %) - 526296 kHz ( 32 %) - performance
And that's it. I can't help thinking (in hindsight) that it would have been better to have written a simple acpi script to set the speedstep setting manually - i.e. "echo x > /proc/acpi/processor/CPU0/performance" but that would have been too easy.Great guide!
Way to go to summarize all these pages
Just some other idea if you want to check em out... speedstep-detect from http://www.poupinou.org/cpufreq/ .. maybe you have to pass something to the module.
Also just a general comment...
Quote
Copy the kernel sources to the new directory and un-pack them:
# cp /path-to-file/linux-2.4.26.tar.gz /ramdisk/kernelsource # cd /ramdisk/kernelsource # tar -xzvf linux-2.4.26.tar.gz -C /ramdisk/kernelsource # rm linux-2.4.26.tar.gz
You can just "cd /ramdisk/kernelsource && tar zxvf /path-to-file/linux-2.4.26.tar.gz" or use that -C option, no need to copy it (may save some people some space/time since the kernel sources can take up a bit)Next Page...
original here.
