Real-time preemption

This documentation is intended for Linux kernel developers and contributors interested in the inner workings of PREEMPT_RT. It explains key concepts and the required changes compared to a non-PREEMPT_RT configuration.

• Theory of operation
  • Preface
  • Scheduling
  • Sleeping spin locks
  • Priority inheritance
  • Threaded interrupts
  • Summary
• How realtime kernels differ
  • Preface
  • Locking
  • Execution context
  • Spin until ready
• Porting an architecture to support PREEMPT_RT
  • Requirements
  • Optional features