On Sun, 3 Sep 2006 20:40:53 +0200
Juan RP <juan@xtrarom.org> wrote:

> 
> I have the following code:
> 
> http://www.xtrarom.org/~juan/sysmon_cpufreq/cpufreq.diff <- kernel
> part http://www.xtrarom.org/~juan/sysmon_cpufreq/dict_kern.c <-
> userland
> 
> But when I run it, prop_dictionary_recv_ioctl returns:
> 
> [juan@nocturno][~/proplib_tests/dict_kern]> ./dict_kern 
> dict_kern: rval=5: Undefined error: 0
> [juan@nocturno][~/proplib_tests/dict_kern]>
> 
> I can see the following kernel printfs:
> 
> sysmonioctl_cpufreq: before the for loop
> sysmonioctl_cpufreq: before the 2nd for loop
> sysmonioctl_cpufreq: prop_dictionary_set called
> sysmonioctl_cpufreq: before the 2nd for loop
> sysmonioctl_cpufreq: prop_dictionary_set called
> sysmonioctl_cpufreq: before copyout_ioctl
> sysmonioctl_cpufreq: error=0
> sysmonioctl_cpufreq: after copyout_ioctl
> sysmonioctl_cpufreq: prop_object_release called
> 
> prop_dictionary_copyout_ioctl returns 0.

And yes, /dev/cpufreq exists:

[juan@nocturno][~/proplib_tests/dict_kern]> ls -l /dev/cpufreq 
crw-r--r--  1 root  wheel  67, 3 Sep  3 15:58 /dev/cpufreq
[juan@nocturno][~/proplib_tests/dict_kern]>