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Subject[PATCH v2 0/2] workqueue: Make the workqueue code PREEMPT_RT safe
The series changes `wq_manager_wait' from waitqueues to simple
waitqueues and its internal locking (pool::lock and wq_mayday_lock) to
raw spinlocks so that workqueues can be used on PREEMPT_RT from truly
atomic context.

v1…v2: Use rcuwait instead of swait.

v1 can be found at


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