locking/qspinlock: Avoid moving certain threads between waiting queues in CNA
Prohibit moving certain threads (e.g., in irq and nmi contexts) to the secondary queue. Those prioritized threads will always stay in the primary queue, and so will have a shorter wait time for the lock. Signed-off-by:Alex Kogan <alex.kogan@oracle.com> Reviewed-by:
Steve Sistare <steven.sistare@oracle.com> Reviewed-by:
Waiman Long <longman@redhat.com>
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8517fecc
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