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Commit 605400a8 authored by Darrick J. Wong's avatar Darrick J. Wong Committed by Dave Jones
Browse files

[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: default avatarDarrick J. Wong <djwong@us.ibm.com>
Cc: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarDave Jones <davej@redhat.com>
parent e8628dd0

Documentation/cpu-freq/user-guide.txt

+14 −0
Original line number Diff line number Diff line
@@ -154,6 +154,11 @@ scaling_governor, and by "echoing" the name of another 
				that some governors won't load - they only

				work on some specific architectures or

				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_max_freq		show the current "policy limits" (in

				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

				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

set the CPU operating frequency to a specific value, you can read out