Arcabouço para o escalonamento de processos em tempo real para linux embarcado.

Abstract

Using the Linux operating system on embedded systems enables reuse of a large number of applications. Embedded systems used in industrial systems may require the processing of tasks in real time. In Linux there are several alternatives to provide the execution of tasks in real time, but none of them meets the requirements to be officially incorporated into its core. The integration of RT-Preempt and LITMUSrt solutions is an interesting alternative for the provision of real-time services on Linux. The first deals with problems such as long critical sections with disabled interruptions and inversions of priorities, while the second introduces algorithms such as EDF and allows the use of proportional integral controllers for the scheduling of closed-loop processes. In this way, the objective of this work is the integration of RT-Preempt and LITMUSrt solutions in a framework that allows the development and execution of control and automation applications in a typical embedded platform.