Run-Time Resource Management at the Operating System Level - Multi-objective Design Space Exploration of Multiprocessor SoC Architectures - page 135

completely defined by the coordination entity. Instead, this entity will notify proper
constraints to drivers and let their local optimization policies to do the fine-tuning.
In order to efficiently support portability and scalability of the control policy, it
has been defined on the base of abstraction and modeling layers, as depicted in Fig.
6.13 .
The abstraction layer grants portability without compromising the fine-details
requirement. Available resources and devices working modes are represented in
a platform independent way. Resources are abstracted using a set of metrics
(PSM/ASM) which can be used also to setup the multi-objective optimization

Resource
Manager

Tasks

Operating System

Model Layer CPM Core:

− FSC Identification
− FSC Ordering
− FSC Selection

QoS
Requirements

Optimization
Layer

Global Optimization
policies

FSC

Abstraction
Layer

PSM

DWR

Optimal System−Wide
Configuration

ASM

Drivers Local Optimization

policies

Platform Code

HW Platform

Silicon and Architectural
mechanisms

Devices

Fig. 6.13 The CPM framework architecture is based on three layers: abstraction, modeling and
optimization