Development: Driver Performance Optimisations

In some cases it may be critical to do things really right, so here are just a list of the most important points when working on a DVB driver:

• Don't do heavy work in interrupt context. Use work queues.
• Avoid busy-polling.
• Don't use extra-threads unless really necessairy. They are usually avoidable.
• Don't call the Software Demultiplexer from interrupt context if avoidable.