linux-kernel - Re: [PATCHSET] workqueue: remove gcwq and make worker

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Date:	Thu, 24 Jan 2013 11:03:07 -0800
From:	Tejun Heo <tj@...nel.org>
To:	linux-kernel@...r.kernel.org
Cc:	Lai Jiangshan <laijs@...fujitsu.com>,
	Joonsoo Kim <js1304@...il.com>
Subject: Re: [PATCHSET] workqueue: remove gcwq and make worker_pool the only
 backend abstraction

On Wed, Jan 16, 2013 at 05:42:32PM -0800, Tejun Heo wrote:
> Currently, on the backend side, there are two layers of abstraction.
> For each CPU and the special unbound wq-specific CPU, there's one
> global_cwq.  gcwq in turn hosts two worker_pools - one for normal
> priority, the other for highpri - each of which actually serves the
> work items.
> 
> worker_pool is the later addition to support separate pool of workers
> for highpri workqueues.  Stuff was moved to worker_pool on as-needed
> basis and, as a result, the two pools belonging to the same CPU share
> some stuff in the gcwq - most notably the lock and the hash table for
> work items currently being executed.

Applied to wq/for-3.9.

Thanks!

-- 
tejun
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