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Currently, a global wakeup queue is used for all CPUs on the system. This leads to inefficient behavior regarding preemption. When the scheduler requests a preemption event, it is inserted into a global list alongside events from all other CPUs. When processing IRQs, there is no guarantee which CPU will handle the timer interrupt. If the current CPU processes a preemption event intended for a different CPU, it must signal the target CPU via an IPI. This causes a severe bottleneck, as one CPU may end up distributing preemption events for the entire system. Fix this by implementing a per-cpu wakeup queue. Preemption events are now strictly scheduled for the current CPU, ensuring they are handled locally by the core that scheduled them. This significantly simplifies the preemption logic and eliminates the need for IPIs to signal preemption events.