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authorJacob Pan <jacob.jun.pan@linux.intel.com>2013-10-14 16:02:27 -0700
committerZhang Rui <rui.zhang@intel.com>2013-11-07 08:45:34 +0800
commit94f69966faf8e70bd655ea25f9dd5b9400567b75 (patch)
tree945feaba76156c31be528c32f85aafb44efce366 /Documentation/thermal
parent959f58544b7f20c92d5eb43d1232c96c15c01bfb (diff)
tools/thermal: Introduce tmon, a tool for thermal subsystem
Increasingly, Linux is running on thermally constrained devices. The simple thermal relationship between processor and fan has become past for modern computers. As hardware vendors cope with the thermal constraints on their products, more sensors are added, new cooling capabilities are introduced. The complexity of the thermal relationship can grow exponentially among cooling devices, zones, sensors, and trip points. They can also change dynamically. To expose such relationship to the userspace, Linux generic thermal layer introduced sysfs entry at /sys/class/thermal with a matrix of symbolic links, trip point bindings, and device instances. To traverse such matrix by hand is not a trivial task. Testing is also difficult in that thermal conditions are often exception cases that hard to reach in normal operations. TMON is conceived as a tool to help visualize, tune, and test the complex thermal subsystem. Signed-off-by: Jacob Pan <jacob.jun.pan@linux.intel.com> Signed-off-by: Zhang Rui <rui.zhang@intel.com>
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