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| author | Darrick J. Wong <djwong@us.ibm.com> | 2008-04-18 13:31:13 -0700 |
|---|---|---|
| committer | Dave Jones <davej@redhat.com> | 2008-04-28 16:27:08 -0400 |
| commit | 605400a8ab44131698b206cbe253e48380daaa69 (patch) | |
| tree | 0f336c5fb1b14dca380156b775c74815753eaea7 /Documentation/cpu-freq | |
| parent | e8628dd06d66f2e3965ec9742029b401d63434f1 (diff) | |
| download | lwn-605400a8ab44131698b206cbe253e48380daaa69.tar.gz lwn-605400a8ab44131698b206cbe253e48380daaa69.zip | |
[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.txt | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/Documentation/cpu-freq/user-guide.txt b/Documentation/cpu-freq/user-guide.txt index af3b925ece08..6c442d8426b5 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 |