Messages in this thread |  | | Subject | Re: [RFC PATCH V5 5/5] workqueue: introduce a way to set workqueue's scheduler | From | Mike Galbraith <> | Date | Mon, 29 Jan 2018 05:41:20 +0100 |
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On Mon, 2018-01-29 at 12:15 +0800, Lai Jiangshan wrote: > I think adding priority boost to workqueue(flush_work()) is the best > way to fix the problem.
I disagree, priority boosting is needlessly invasive, takes control out of user hands. The kernel wanting to run a workqueue does not justify perturbing the user's critical task.
I think "give userspace rope" is always the best option, how rope is used is none of our business. Giving the user a means to draw a simple line in the sand, above which they run only critical stuff, below which, they can do whatever they want, sane in our opinions or not, lets users do whatever craziness they want/need to do, and puts the responsibility for consequences squarely on the right set of shoulders.
-Mike
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