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authorYunhong Jiang <yunhong.jiang@intel.com>2015-08-04 12:17:53 -0700
committerYunhong Jiang <yunhong.jiang@intel.com>2015-08-04 15:44:42 -0700
commit9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 (patch)
tree1c9cafbcd35f783a87880a10f85d1a060db1a563 /kernel/Documentation/ABI/testing/sysfs-class-powercap
parent98260f3884f4a202f9ca5eabed40b1354c489b29 (diff)
Add the rt linux 4.1.3-rt3 as base
Import the rt linux 4.1.3-rt3 as OPNFV kvm base. It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and the base is: commit 0917f823c59692d751951bf5ea699a2d1e2f26a2 Author: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Date: Sat Jul 25 12:13:34 2015 +0200 Prepare v4.1.3-rt3 Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> We lose all the git history this way and it's not good. We should apply another opnfv project repo in future. Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423 Signed-off-by: Yunhong Jiang <yunhong.jiang@intel.com>
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+What: /sys/class/powercap/
+Date: September 2013
+KernelVersion: 3.13
+Contact: linux-pm@vger.kernel.org
+Description:
+ The powercap/ class sub directory belongs to the power cap
+ subsystem. Refer to
+ Documentation/power/powercap/powercap.txt for details.
+
+What: /sys/class/powercap/<control type>
+Date: September 2013
+KernelVersion: 3.13
+Contact: linux-pm@vger.kernel.org
+Description:
+ A <control type> is a unique name under /sys/class/powercap.
+ Here <control type> determines how the power is going to be
+ controlled. A <control type> can contain multiple power zones.
+
+What: /sys/class/powercap/<control type>/enabled
+Date: September 2013
+KernelVersion: 3.13
+Contact: linux-pm@vger.kernel.org
+Description:
+ This allows to enable/disable power capping for a "control type".
+ This status affects every power zone using this "control_type.
+
+What: /sys/class/powercap/<control type>/<power zone>
+Date: September 2013
+KernelVersion: 3.13
+Contact: linux-pm@vger.kernel.org
+Description:
+ A power zone is a single or a collection of devices, which can
+ be independently monitored and controlled. A power zone sysfs
+ entry is qualified with the name of the <control type>.
+ E.g. intel-rapl:0:1:1.
+
+What: /sys/class/powercap/<control type>/<power zone>/<child power zone>
+Date: September 2013
+KernelVersion: 3.13
+Contact: linux-pm@vger.kernel.org
+Description:
+ Power zones may be organized in a hierarchy in which child
+ power zones provide monitoring and control for a subset of
+ devices under the parent. For example, if there is a parent
+ power zone for a whole CPU package, each CPU core in it can
+ be a child power zone.
+
+What: /sys/class/powercap/.../<power zone>/name
+Date: September 2013
+KernelVersion: 3.13
+Contact: linux-pm@vger.kernel.org
+Description:
+ Specifies the name of this power zone.
+
+What: /sys/class/powercap/.../<power zone>/energy_uj
+Date: September 2013
+KernelVersion: 3.13
+Contact: linux-pm@vger.kernel.org
+Description:
+ Current energy counter in micro-joules. Write "0" to reset.
+ If the counter can not be reset, then this attribute is
+ read-only.
+
+What: /sys/class/powercap/.../<power zone>/max_energy_range_uj
+Date: September 2013
+KernelVersion: 3.13
+Contact: linux-pm@vger.kernel.org
+Description:
+ Range of the above energy counter in micro-joules.
+
+
+What: /sys/class/powercap/.../<power zone>/power_uw
+Date: September 2013
+KernelVersion: 3.13
+Contact: linux-pm@vger.kernel.org
+Description:
+ Current power in micro-watts.
+
+What: /sys/class/powercap/.../<power zone>/max_power_range_uw
+Date: September 2013
+KernelVersion: 3.13
+Contact: linux-pm@vger.kernel.org
+Description:
+ Range of the above power value in micro-watts.
+
+What: /sys/class/powercap/.../<power zone>/constraint_X_name
+Date: September 2013
+KernelVersion: 3.13
+Contact: linux-pm@vger.kernel.org
+Description:
+ Each power zone can define one or more constraints. Each
+ constraint can have an optional name. Here "X" can have values
+ from 0 to max integer.
+
+What: /sys/class/powercap/.../<power zone>/constraint_X_power_limit_uw
+Date: September 2013
+KernelVersion: 3.13
+Contact: linux-pm@vger.kernel.org
+Description:
+ Power limit in micro-watts should be applicable for
+ the time window specified by "constraint_X_time_window_us".
+ Here "X" can have values from 0 to max integer.
+
+What: /sys/class/powercap/.../<power zone>/constraint_X_time_window_us
+Date: September 2013
+KernelVersion: 3.13
+Contact: linux-pm@vger.kernel.org
+Description:
+ Time window in micro seconds. This is used along with
+ constraint_X_power_limit_uw to define a power constraint.
+ Here "X" can have values from 0 to max integer.
+
+
+What: /sys/class/powercap/<control type>/.../constraint_X_max_power_uw
+Date: September 2013
+KernelVersion: 3.13
+Contact: linux-pm@vger.kernel.org
+Description:
+ Maximum allowed power in micro watts for this constraint.
+ Here "X" can have values from 0 to max integer.
+
+What: /sys/class/powercap/<control type>/.../constraint_X_min_power_uw
+Date: September 2013
+KernelVersion: 3.13
+Contact: linux-pm@vger.kernel.org
+Description:
+ Minimum allowed power in micro watts for this constraint.
+ Here "X" can have values from 0 to max integer.
+
+What: /sys/class/powercap/.../<power zone>/constraint_X_max_time_window_us
+Date: September 2013
+KernelVersion: 3.13
+Contact: linux-pm@vger.kernel.org
+Description:
+ Maximum allowed time window in micro seconds for this
+ constraint. Here "X" can have values from 0 to max integer.
+
+What: /sys/class/powercap/.../<power zone>/constraint_X_min_time_window_us
+Date: September 2013
+KernelVersion: 3.13
+Contact: linux-pm@vger.kernel.org
+Description:
+ Minimum allowed time window in micro seconds for this
+ constraint. Here "X" can have values from 0 to max integer.
+
+What: /sys/class/powercap/.../<power zone>/enabled
+Date: September 2013
+KernelVersion: 3.13
+Contact: linux-pm@vger.kernel.org
+Description
+ This allows to enable/disable power capping at power zone level.
+ This applies to current power zone and its children.