tree 49a8e4496ad0ffa99386f6566bc9ffc0c0cc39b2
parent 502ca9d819792e7d79b6e002afe9094c641fe410
author Tejun Heo <tj@kernel.org> 1277798833 +0200
committer Tejun Heo <tj@kernel.org> 1277798833 +0200

workqueue: add find_worker_executing_work() and track current_cwq

Now that all the workers are tracked by gcwq, we can find which worker
is executing a work from gcwq.  Implement find_worker_executing_work()
and make worker track its current_cwq so that we can find things the
other way around.  This will be used to implement non-reentrant wqs.

Signed-off-by: Tejun Heo <tj@kernel.org>