Change Details

If an interrupt thread runs for a full quantum without yielding the CPU, demote its priority and schedule a preemption to give other ithreads a turn. Unlike ULE, 4BSD schedules the preemption unconditionally since it doesn't have a cheap way to check the equivalent of tdq_lowpri. Sponsored by: Netflix

If an interrupt thread runs for a full quantum without yielding the CPU, demote its priority and schedule a preemption to give other ithreads a turn. Sponsored by: Netflix

If an interrupt thread runs for a full quantum without yielding the CPU, demote its priority and schedule a preemption to give other ithreads a turn. Unlike ULE, 4BSD schedules the preemption unconditionally since it doesn't have a cheap way to check the equivalent of tdq_lowpri. Sponsored by: Netflix