The attrs are where the affinity scope lives, and a per-cpu workqueue
will need one once per-cpu becomes a scope rather than a separate
backend. Allocate them unconditionally.
wq_dump.py used a non-NULL wq->attrs as its test for an unbound
workqueue, which no longer holds; test WQ_UNBOUND there instead.
Signed-off-by: Breno Leitao <leitao@debian.org>
Signed-off-by: Tejun Heo <tj@kernel.org>
f784d9ce8d