workqueue: add workqueue->unbound_attrs
authorTejun Heo <tj@kernel.org>
Mon, 1 Apr 2013 18:23:34 +0000 (11:23 -0700)
committerTejun Heo <tj@kernel.org>
Mon, 1 Apr 2013 18:23:34 +0000 (11:23 -0700)
commit6029a91829ad2bd876fed78bc088d3469a9dd777
treeb5767d17ce0ed6f0ecee7d1b2ad8fcfe753505d9
parentf3f90ad46934202eeefac454fd5d89bf73c6aa34
workqueue: add workqueue->unbound_attrs

Currently, when exposing attrs of an unbound workqueue via sysfs, the
workqueue_attrs of first_pwq() is used as that should equal the
current state of the workqueue.

The planned NUMA affinity support will make unbound workqueues make
use of multiple pool_workqueues for different NUMA nodes and the above
assumption will no longer hold.  Introduce workqueue->unbound_attrs
which records the current attrs in effect and use it for sysfs instead
of first_pwq()->attrs.

Signed-off-by: Tejun Heo <tj@kernel.org>
Reviewed-by: Lai Jiangshan <laijs@cn.fujitsu.com>
kernel/workqueue.c