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authorNi Wade <wni@nvidia.com>2015-07-14 10:40:56 +0300
committerZhang Rui <rui.zhang@intel.com>2015-08-03 18:15:50 +0300
commit25a0a5ce16ecd7e60c4cf1436892433873e9d99d (patch)
tree4debaeb56d0784c137b0b91afb5cfd9b7da41bc6 /Documentation/thermal
parent74d33293e467df61de1b1d8b2fbe29e550dec33b (diff)
downloadlinux-25a0a5ce16ecd7e60c4cf1436892433873e9d99d.tar.xz
thermal: add available policies sysfs attribute
The Linux thermal framework support to change thermal governor policy in userspace, but it can't show what available policies supported. This patch adds available_policies attribute to the thermal framework, it can list the thermal governors which can be used for a particular zone. This attribute is read only. Signed-off-by: Wei Ni <wni@nvidia.com> Reviewed-by: Javi Merino <javi.merino@arm.com> Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Diffstat (limited to 'Documentation/thermal')
-rw-r--r--Documentation/thermal/sysfs-api.txt6
1 files changed, 6 insertions, 0 deletions
diff --git a/Documentation/thermal/sysfs-api.txt b/Documentation/thermal/sysfs-api.txt
index c1f6864a8c5d..10f062ea6bc2 100644
--- a/Documentation/thermal/sysfs-api.txt
+++ b/Documentation/thermal/sysfs-api.txt
@@ -180,6 +180,7 @@ Thermal zone device sys I/F, created once it's registered:
|---temp: Current temperature
|---mode: Working mode of the thermal zone
|---policy: Thermal governor used for this zone
+ |---available_policies: Available thermal governors for this zone
|---trip_point_[0-*]_temp: Trip point temperature
|---trip_point_[0-*]_type: Trip point type
|---trip_point_[0-*]_hyst: Hysteresis value for this trip point
@@ -256,6 +257,10 @@ policy
One of the various thermal governors used for a particular zone.
RW, Required
+available_policies
+ Available thermal governors which can be used for a particular zone.
+ RO, Required
+
trip_point_[0-*]_temp
The temperature above which trip point will be fired.
Unit: millidegree Celsius
@@ -417,6 +422,7 @@ method, the sys I/F structure will be built like this:
|---temp: 37000
|---mode: enabled
|---policy: step_wise
+ |---available_policies: step_wise fair_share
|---trip_point_0_temp: 100000
|---trip_point_0_type: critical
|---trip_point_1_temp: 80000