Re: [PATCH wq/for-3.9] workqueue: move nr_running into worker_pool

[Tejun Heo <tj@kernel.org>]

On Thu, Jan 24, 2013 at 11:39:44AM -0800, Tejun Heo wrote:
> As nr_running is likely to be accessed from other CPUs during
> try_to_wake_up(), it was kept outside worker_pool; however, while less
> frequent, other fields in worker_pool are accessed from other CPUs
> for, e.g., non-reentrancy check.  Also, with recent pool related
> changes, accessing nr_running matching the worker_pool isn't as simple
> as it used to be.
> 
> Move nr_running inside worker_pool.  Keep it aligned to cacheline and
> define CPU pools using DEFINE_PER_CPU_SHARED_ALIGNED().  This should
> give at least the same cacheline behavior.
> 
> get_pool_nr_running() is replaced with direct pool->nr_running
> accesses.
> 
> Signed-off-by: Tejun Heo <tj@kernel.org>
> Cc: Joonsoo Kim <js1304@gmail.com>

Applied to wq/for-3.9.

Thanks.

-- 
tejun