Re: [PATCHSET] workqueue: concurrency managed workqueue, take#4

[Tejun Heo]

Hello,

On 03/10/2010 11:52 PM, David Howells wrote:
>  * queue_work - queue work on a workqueue
>  * @wq: workqueue to use
>  * @work: work to queue
>  *
>  * Returns 0 if @work was already on a queue, non-zero otherwise.
>  *
>  * We queue the work to the CPU on which it was submitted, but if the CPU dies
>  * it can be processed by another CPU.
> 
> So when a work item is running on a CPU, any work items it queues (including
> requeueing itself) will be queued upon that CPU for attention only by that CPU
> (assuming that CPU doesn't get pulled out)?

Yes, that's the one of the characteristics of workqueue.  For IO bound
stuff, it usually is a plus.

Thanks.

-- 
tejun
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