Priority inversion is a operating system scenario in which a higher priority process is preempted by a lower priority process. This implies the inversion of the priorities of the two processes.
Some of the problems that occur due to priority inversion are given as follows −
Some of the solutions to handle priority inversion are given as follows −
All of the resources are assigned a priority that is equal to the highest priority of any task that may attempt to claim them. This helps in avoiding priority inversion.
There are only two priorities in this case i.e. interrupts disabled and preemptible. So priority inversion is impossible as there is no third option.
This solution temporarily elevates the priority of the low priority task that is executing to the highest priority task that needs the resource. This means that medium priority tasks cannot intervene and lead to priority inversion.
Priority inversion can be avoided by avoiding blocking as the low priority task blocks the high priority task.
The priority of the ready tasks can be randomly boosted until they exit the critical section.