Messages in this thread | | | Date | Wed, 26 Sep 2012 11:38:33 -0700 | From | Tejun Heo <> | Subject | Re: [RFC PATCH 11/12] workqueue: add WQ_CPU_INTENSIVE to system_long_wq |
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On Thu, Sep 27, 2012 at 01:20:42AM +0800, Lai Jiangshan wrote: > works in system_long_wq will be running long. > add WQ_CPU_INTENSIVE to system_long_wq to avoid these kinds of works occupy > the running wokers which delay the normal works. > > if system_long_wq is designed for only sleep-long works, not running-long works, > this patch makes no sense.
There "long" doesn't mean it's gonna consume a lot of CPU cycles, so it should contribute to concurrency management. The plan is to remove system_long_wq once we got rid of flushing of system_wq via flush_scheduled_work() and directly through flush_workqueue(). I think we're pretty close, so let's not add more usage of it.
Thanks.
-- tejun
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