workqueue: add wq_numa_tbl_len and wq_numa_possible_cpumask[]
authorTejun Heo <tj@kernel.org>
Mon, 1 Apr 2013 18:23:32 +0000 (11:23 -0700)
committerTejun Heo <tj@kernel.org>
Mon, 1 Apr 2013 18:23:32 +0000 (11:23 -0700)
commitbce903809ab3f29eca97e0be5537778c1689c82b
tree6015d477e4b7a43693ad8b12a6ce3a84781e5ecd
parenta892cacc7f4960a39c0fad7bbdf04c5cbf7c229e
workqueue: add wq_numa_tbl_len and wq_numa_possible_cpumask[]

Unbound workqueues are going to be NUMA-affine.  Add wq_numa_tbl_len
and wq_numa_possible_cpumask[] in preparation.  The former is the
highest NUMA node ID + 1 and the latter is masks of possibles CPUs for
each NUMA node.

This patch only introduces these.  Future patches will make use of
them.

v2: NUMA initialization move into wq_numa_init().  Also, the possible
    cpumask array is not created if there aren't multiple nodes on the
    system.  wq_numa_enabled bool added.

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