Development: Driver Performance Optimisations

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V4L Driver Performance Optimisations

DVB Driver Performance Optimisations

In some cases it may be critical to do things really right, so here is a list of just 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.