On Fri, Jan 23, 2004 at 01:50:14PM -0800, Johannes Graumann wrote: > Hello, > > I have compiled for my Crusoe laptop the following into my new kernel: > CPU_FREQ > CPU_FREQ_DEFAULT_GOV_USERSPACE > CPU_FREQ_GOV_POWERSAVE > CPU_FREQ_GOV_USERSPACE > CPU_FREQ_TABLE > X86_LONGRUN > > However, if I do 'dpkg-reconfigure cpufreqd' I keep getting this error: > >Unable to find a CpuFreq interface in your kernel. > > Any hints as to what I am doing wrong?
Crusoe processor do not need any kind of governors. Please look at Documentation/cpu-freq/user-guide.txt why. To resume, this processor is able to determine itself what will be the correct frequency to run, according to two kind of policies (powersave and performance). Therefore, this processor don't need any kind of software like cpufreqd in order to switch frequencies. Since the cpufreqd is a daemon that should use the userspace governor IIRC, it is a bad idea to apt-get install cpufreqd, or any daemon, which use actually the userspace governor. (Of course, installing a daemon that will set one of powersave or performance policy depending of AC presence is a good idea, but if you enable ACPI, you should be able to do that via acpid(8)). Instead, you have under /sys/devices/system/cpu/cpu0 some files which will show the current policy, and the min and max at which the processor is allowed to run, according to that policy. Soon, you should be able to get the current frequency as well (just that CPUFreq developpers forgot that feature...). Cheers, -- Ducrot Bruno -- Which is worse: ignorance or apathy? -- Don't know. Don't care.
