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[CPUFREQ] document the currently undocumented parts of the sysfs interface 

There is a description of some of the sysfs files.  However, there are some
that are not mentioned in the documentation, so add them to the user's guide.

Signed-off-by: Darrick J. Wong <djwong@us.ibm.com>
Cc: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Dave Jones <davej@redhat.com>
This commit is contained in:
Darrick J. Wong 2008-04-18 13:31:13 -07:00 committed by Dave Jones
parent e8628dd06d
commit 605400a8ab
1 changed files with 14 additions and 0 deletions
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Documentation/cpu-freq/user-guide.txt
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@ -154,6 +154,11 @@ scaling_governor, and by "echoing" the name of another
that some governors won't load - they only that some governors won't load - they only
work on some specific architectures or work on some specific architectures or
processors. processors.
cpuinfo_cur_freq : Current speed of the CPU, in KHz.
scaling_available_frequencies : List of available frequencies, in KHz.
scaling_min_freq and scaling_min_freq and
scaling_max_freq show the current "policy limits" (in scaling_max_freq show the current "policy limits" (in
kHz). By echoing new values into these kHz). By echoing new values into these
@ -162,6 +167,15 @@ scaling_max_freq show the current "policy limits" (in
first set scaling_max_freq, then first set scaling_max_freq, then
scaling_min_freq. scaling_min_freq.
affected_cpus : List of CPUs that require software coordination
of frequency.
related_cpus : List of CPUs that need some sort of frequency
coordination, whether software or hardware.
scaling_driver : Hardware driver for cpufreq.
scaling_cur_freq : Current frequency of the CPU, in KHz.
If you have selected the "userspace" governor which allows you to If you have selected the "userspace" governor which allows you to
set the CPU operating frequency to a specific value, you can read out set the CPU operating frequency to a specific value, you can read out