pub unsafe fn preempt_guard_exit(__arg0: PreemptGuardToken)Expand description
Leaves one nested task-preemption guard.
The final exit may enter the scheduler when work is pending. When the caller already owns a scheduler frame, it must consume only this nested depth and preserve the scheduler baton and raw IRQ state.
ยงSafety
A non-NONE token must have been returned by
preempt_guard_enter on this task execution context and must be exited
exactly once. Tokens may be exited in non-LIFO order.