Re: [RFC][PATCH] irq_work

Peter Zijlstra
2010-06-24T07:20:02Z

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.