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authorDarrick J. Wong <djwong@us.ibm.com>2008-04-18 13:31:13 -0700
committerDave Jones <davej@redhat.com>2008-04-28 16:27:08 -0400
commit605400a8ab44131698b206cbe253e48380daaa69 (patch)
tree0f336c5fb1b14dca380156b775c74815753eaea7 /Documentation/cpu-freq
parente8628dd06d66f2e3965ec9742029b401d63434f1 (diff)
downloadlinux-605400a8ab44131698b206cbe253e48380daaa69.tar.gz
[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>
Diffstat (limited to 'Documentation/cpu-freq')
-rw-r--r--Documentation/cpu-freq/user-guide.txt14
1 files changed, 14 insertions, 0 deletions
diff --git a/Documentation/cpu-freq/user-guide.txt b/Documentation/cpu-freq/user-guide.txt
index af3b925ece0..6c442d8426b 100644
--- a/Documentation/cpu-freq/user-guide.txt
+++ b/Documentation/cpu-freq/user-guide.txt
@@ -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