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Power Management in Mobile Devices
book

Power Management in Mobile Devices

by Findlay Shearer
April 2011
Intermediate to advanced content levelIntermediate to advanced
336 pages
13h 59m
English
Newnes
Content preview from Power Management in Mobile Devices
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www.newnespress.com
System-Level Approach to Energy Conservation
7.6.1 IEM Policies and Operating System Events
IEM Policies are short, modifi able software routines that control what to do when an
OS event occurs. An IEM kernel employs policies to determine a response to an event
like increase or decrease the voltage and frequency to the CPU. Some software tasks are
predictable in their behavior and can track past behavior to predict future performance
requirements. IEM policies and their relationship to the IEM software architechture are
illustrated in Figure 7.10 .
Task Info
Policies
Control
Operating
systems
layer
Communications
layer
IEM
Kernel ...
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Publisher Resources

ISBN: 9780750679589