tree 8c2f14e708367cb67dd9d29f2da0f7e5f454cf31
parent d320c03830b17af64e4547075003b1eeb274bc6c
author Tejun Heo <tj@kernel.org> 1277798834 +0200
committer Tejun Heo <tj@kernel.org> 1277798834 +0200

workqueue: implement several utility APIs

Implement the following utility APIs.

 workqueue_set_max_active()	: adjust max_active of a wq
 workqueue_congested()		: test whether a wq is contested
 work_cpu()			: determine the last / current cpu of a work
 work_busy()			: query whether a work is busy

* Anton Blanchard fixed missing ret initialization in work_busy().

Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Anton Blanchard <anton@samba.org>