linux-kernel - Re: [PATCH 08/10 V2] workqueue: rename manager_mutex to attach

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Message-ID: <20140513141948.GC23710@htj.dyndns.org>
Date:	Tue, 13 May 2014 10:19:48 -0400
From:	Tejun Heo <tj@...nel.org>
To:	Lai Jiangshan <laijs@...fujitsu.com>
Cc:	linux-kernel@...r.kernel.org,
	Peter Zijlstra <peterz@...radead.org>,
	Viresh Kumar <viresh.kumar@...aro.org>,
	Ingo Molnar <mingo@...nel.org>
Subject: Re: [PATCH 08/10 V2] workqueue: rename manager_mutex to attach_mutex

Hello,

On Tue, May 13, 2014 at 02:45:58PM +0800, Lai Jiangshan wrote:
> On 05/13/2014 06:01 AM, Tejun Heo wrote:
> > On Mon, May 12, 2014 at 02:56:20PM +0800, Lai Jiangshan wrote:
> >> manager_mutex is only used to protect the attaching for the pool
> >> and the pool->workers list. It protects the pool->workers and operations
> >> based on this list, such as:
> >> 	cpu-binding for the workers in the pool->workers
> >> 	concurrency management for the workers in the pool->workers
> > 
> > Concurrency management?  What are you referring to?
> 
> The operations to set/clear POOL_DISASSOCIATED and WORKER_UNBOUND
> 
> Which words will be better if I don't use "Concurrency management"

Just be explicit and spell them out?  Concurrency management in wq
context usually means nr_running tracking and the associated worker
suppression / wake up mechanism.

Thanks.

-- 
tejun
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