pub fn LEAVE_L2()Expand description
LEAVE_L2() mirrors retne for oostubs. It’s important to note that we do
not mirror or implement oostubs’s leave() funciton on purpose: the origin
is IMHO too much coupling. We want to keep our implementation as flat as
possible. The internal logic of clearing Epilogue queue (which includes a.
disabling and re-enabling irq at proper places and b. reschedule decisions)
is explicit and flattened in the irq handling routine. See handle_irq