Messages in this thread | | | Subject | Re: [RFC][PATCH] irq_work | From | Huang Ying <> | Date | Thu, 24 Jun 2010 15:27:33 +0800 |
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On Thu, 2010-06-24 at 15:19 +0800, Peter Zijlstra wrote: > On Thu, 2010-06-24 at 15:04 +0800, Huang Ying wrote: > > > Yes. NMI is there from 8259 age. > > But do we really care about such systems? > > > That is possible. But in NO_HZ system, we have no tick to rely on. > > Of course you have, you can delay the NO_HZ state when there's pending > callbacks, that's all of 1 line. > > > soft_irq is better here, because it will be triggered for any interrupt. > > Well, you can do the callbacks from irq_exit() as well, that's no > problem.
I think it is not a good idea to add overhead in such a hot path if the overhead can be avoided.
Best Regards, Huang Ying
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