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| author |   Jonghwa Lee <jonghwa3.lee@samsung.com> | 2012-08-23 20:00:46 +0900 |
|---|---|---|
| committer |   MyungJoo Ham <myungjoo.ham@samsung.com> | 2012-11-20 16:05:44 +0900 |
| commit | e552bbaf5b987f57c43e6981a452b8a3c700b1ae (patch) | |
| tree | d48111ab3d5c71ea4ed9e8ae3cb7bfb32b06bdec /Documentation/ABI | |
| parent | PM / devfreq: Add sysfs node to expose available frequencies (diff) | |
| download | linux-dev-e552bbaf5b987f57c43e6981a452b8a3c700b1ae.tar.xz linux-dev-e552bbaf5b987f57c43e6981a452b8a3c700b1ae.zip | |
PM / devfreq: Add sysfs node for representing frequency transition information.
This patch adds sysfs node which can be used to get information of frequency
transition. It represents transition table which contains total number of transition of
each freqeuncy state and time spent. It is inspired CPUFREQ's status driver.
Signed-off-by: Jonghwa Lee <jonghwa3.lee@samsung.com>
[Added Documentation/ABI entry, updated kernel-doc, and resolved merge conflict]
Signed-off-by: MyungJoo Ham <myungjoo.ham@samsung.com>
Diffstat (limited to 'Documentation/ABI')
| -rw-r--r-- | Documentation/ABI/testing/sysfs-class-devfreq | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/Documentation/ABI/testing/sysfs-class-devfreq b/Documentation/ABI/testing/sysfs-class-devfreq index e672ccb02e7f..40f98a9428dc 100644 --- a/Documentation/ABI/testing/sysfs-class-devfreq +++ b/Documentation/ABI/testing/sysfs-class-devfreq @@ -44,6 +44,17 @@ Description: (/sys/class/devfreq/.../central_polling is 0), this value may be useless. +What: /sys/class/devfreq/.../trans_stat +Date: October 2012 +Contact: MyungJoo Ham <myungjoo.ham@samsung.com> +Descrtiption: + This ABI shows the statistics of devfreq behavior on a + specific device. It shows the time spent in each state and + the number of transitions between states. + In order to activate this ABI, the devfreq target device + driver should provide the list of available frequencies + with its profile. + What: /sys/class/devfreq/.../userspace/set_freq Date: September 2011 Contact: MyungJoo Ham <myungjoo.ham@samsung.com> |