[PATCH 0/4 V6] workqueue: Introduce low-level unbound wq sysfs cpumask v5

[Lai Jiangshan <laijs@cn.fujitsu.com>]

This patchset mostly copies from Frederic and split the apply_workqueue_attrs()
as TJ's suggest.

This patchset still doesn't include the patch "workqueue: Allow changing attributions
of ordered workqueues", I hope to reduce the review processing. The handling
for the ordered workqueue will be repose after this patchset accepted.

changed from v5:
Apply TJ's comment, rename, error-path .etc.

The default pwq fallback to the low level global cpumask when (and ONLY when) the
cpumask set by the user doesn't overlap with the low level cpumask.

Changed from V4
Add workqueue_unbounds_cpumask_set() kernel API and minimally restruct the patch4.



Cc: Tejun Heo <tj@kernel.org>
Cc: Christoph Lameter <cl@linux.com>
Cc: Kevin Hilman <khilman@linaro.org>
Cc: Lai Jiangshan <laijs@cn.fujitsu.com>
Cc: Mike Galbraith <bitbucket@online.de>
Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: Tejun Heo <tj@kernel.org>
Cc: Viresh Kumar <viresh.kumar@linaro.org>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
---

Frederic Weisbecker (2):
  workqueue: Reorder sysfs code
  workqueue: Create low-level unbound workqueues cpumask

Lai Jiangshan (2):
  workqueue: split apply_workqueue_attrs() into 3 stages
  workqueue: Allow modifying low level unbound workqueue cpumask

 include/linux/workqueue.h |   1 +
 kernel/workqueue.c        | 971 +++++++++++++++++++++++++++-------------------
 2 files changed, 568 insertions(+), 404 deletions(-)

-- 
2.1.0