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 Original line 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

				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