Top Struct

• linux/percpu.h:
  • Needed for making CPU-local allocations.
• linux/sched.h:
  • Needed for the definition of struct task_struct.
• litmus/litmus.h:
  • Contains many necessary definitions for working with LITMUSRT.
• litmus/rt_domain.h:
  • Contains definitions relating to “real-time domains”, and includes ready-made definitions for release and ready queues.

• litmus/edf_common.h:

  • Contains common definitions related to EDF priority and EDF-related helper functions.

• litmus/sched_plugin.h

• litmus/jobs.h

• litmus/budget.h

Detail

• sched_plugin
  • .plugin_name = "DEMO",
  • .schedule = demo_schedule
    1. raw_spin_lock
    2. check if is real-time task and need to be preempted
    3. if need rescheduled, add to ready queue

* .task_wake_up 
* .admit_task         
* .task_new             
* .task_exit              
* .get_domain_proc_info           
* .activate_plugin   : 
    * is invoked when the plugin is selected by the user (with setsched in liblitmus) and is a good place to implement plugin initialization tasks.
* .deactivate_plugin = demo_deactivate_plugin

PFP