commit fa07fb6a4ecad41d373eaf1574b9d54b4f0c1e75
author Tejun Heo <tj@kernel.org> Mon Sep 05 08:54:06 2016 -0400
committer Tejun Heo <tj@kernel.org> Fri Sep 16 11:08:39 2016 -0400
tree 6443de8db4ce01d1cb351b59559190a72985abd5
parent 77e5bdf9f7b2d20939c8d807f3e68778d6e1557a

workqueue: dump workqueue state on sanity check failures in destroy_workqueue()

destroy_workqueue() performs a number of sanity checks to ensure that
the workqueue is empty before proceeding with destruction.  However,
it's not always easy to tell what's going on just from the warning
message.  Let's dump workqueue state after sanity check failures to
help debugging.

Signed-off-by: Tejun Heo <tj@kernel.org>
Link: http://lkml.kernel.org/r/CACT4Y+Zs6vkjHo9qHb4TrEiz3S4+quvvVQ9VWvj2Mx6pETGb9Q@mail.gmail.com
Cc: Dmitry Vyukov <dvyukov@google.com>