2012/10/21 Tejun Heo <tj@kernel.org>:
> On Sun, Oct 21, 2012 at 01:30:07AM +0900, Joonsoo Kim wrote:
>> Commit 63d95a91 ('workqueue: use @pool instead of @gcwq or @cpu where
>> applicable') changes an approach to access nr_running.
>> Thus, wq_worker_waking_up() doesn't use @cpu anymore.
>> Remove it and remove comment related to it.
>>
>> Signed-off-by: Joonsoo Kim <js1304@gmail.com>
>
> I'm not sure whether I wanna remove or add WARN_ON_ONCE() on it.  That
> part has gone through some changes and seen some bugs.  Can we please
> do the following instead at least for now?
>
>         if (!(worker->flags & WORKER_NOT_RUNNING)) {
>                 WARN_ON_ONCE(worker->pool->gcwq->cpu != cpu);
>                 atomic_inc(get_pool_nr_running(worker->pool));
>         }
>

I have no objection to do this for now.
Thanks.