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See my latest patch that tries to use a different hyperthread on the same CPU core, or falls back to a different core in the same NUMA node if that fails: https://lore.kernel.org/all/20220811190433.1213179-1-Felix.Kuehling@amd.com/ Dave pointed out that the driver may not be the best place to implement such logic and suggested that we should have an abstraction, maybe in the workqueue code. Do you feel this is something that could or should be provided by the core workqueue code? Or maybe some other place? Thank you,   Felix -- F e l i x K u e h l i n g PMTS Software Development Engineer | Linux Compute Kernel 1 Commerce Valley Dr. East, Markham, ON L3T 7X6 Canada (O) +1(289)695-1597 _ _ _ _____ _____ / \ | \ / | | _ \ \ _ | / A \ | \M/ | | |D) ) /|_| | /_/ \_\ |_| |_| |_____/ |__/ \| facebook.com/AMD | amd.com