On Thursday 24 April 2014 10:13:39 Neil Bothwick wrote:
> On Thu, 24 Apr 2014 02:27:05 -0400, Walter Dnes wrote:
> > [aa1][root][/usr/src/linux] /etc/init.d/cpufrequtils start
> >
> > * Caching service dependencies ... [ ok ]
> > * Running cpufreq-set --governor conservative -- ...
> >
> > /usr/libexec/cpufrequtils-change.sh: line 26: cd:
> > /sys/devices/system/cpu/cpufreq: No such file or directory [ !! ]
> >
> > * ERROR: cpufrequtils failed to start
>
> I get a similar message, it appears to be looking in the wrong place.
>
> /sys/devices/system/cpu/cpufreq does not exist but
> /sys/devices/system/cpu/cpu{0..3}/cpufreq do
Strange, on my system it does exist:
# ls -lsa /sys/devices/system/cpu/cpufreq*
total 0
0 drwxr-xr-x 2 root root 0 Apr 24 11:19 .
0 drwxr-xr-x 10 root root 0 Apr 24 07:06 ..
0 -r--r--r-- 1 root root 4096 Apr 24 11:19 boost
along with the cpu{0..3} options.
When going through the CPUFREQ options in menuconfig, the following option
mentions a "boost" entry:
**********
CONFIG_X86_ACPI_CPUFREQ_CPB:
The powernow-k8 driver used to provide a sysfs knob called "cpb"
to disable the Core Performance Boosting feature of AMD CPUs. This
file has now been superseeded by the more generic "boost" entry.
By enabling this option the acpi_cpufreq driver provides the old
entry in addition to the new boost ones, for compatibility reasons.
Symbol: X86_ACPI_CPUFREQ_CPB [=y]
Type : boolean
Prompt: Legacy cpb sysfs knob support for AMD CPUs
*********
--
Joost
