DEVICE AND METHOD FOR EXECUTING APPLICATIONS UNDER REAL-TIME CONDITIONS IN AN EMBEDDED SYSTEM

摘要

Embedded systems operate in numerous application areas and devices. Even if there are hard real-time requirements for a computer deployment in the embedded field depending on the deployment and application, tasks without real-time requirements must also be processed in large volume. The aim of the invention is to specify a method that enables in particular Linux to be deployed on a two-kernel system for real-time requirements. Practically every interrupt controller has the ability to deactivate each individual interrupt. This is realized by a mask register, which is located between the interrupt request register and the CPU. Occurring interrupts are stored or delayed until the mask is lifted. Said ability is commonly used for protection (e.g., masking unconnected interrupt lines) or by special device drivers (e.g., for overlapped work between a device and an ISR). The use of said hardware function for the interrupt logging of a two-kernel solution is novel. If the real-time domain is always active (processing of real-time ISR or real-time threads), all Linux interrupts are masked.