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8fec62b2d9
ACPI works need to be executed on cpu0 and acpi/osl.c achieves this by creating singlethread workqueue and then binding it to cpu0 from a work which is quite unorthodox. Make it create regular workqueues and use queue_work_on() instead. This is in preparation of concurrency managed workqueue and the extra workers won't be a problem after it's implemented. Signed-off-by: Tejun Heo <tj@kernel.org>