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Re: [Xen-devel] event priority

On 10 Apr 2006, at 15:51, Tian, Kevin wrote:

        Seems current event priority is simple by
earlier-alloc-higher-priority style, because event ports are allocated
incrementally from 1 and event dispatcher uses bit search instruction
to walk pending events sequentially. Is there any plan (or benefit) to
add more flexible priority policy, since by current way the priority is
decided completely by compilation sequence of different drivers?

Sorry, I should say driver init sequence here. :-)

If hardirq 'scheduling' is demonstrated to be an issue then we can certainly work on this. There are various possible solutions -- the easiest being to simply round-robin scan the event_pending array.

 -- Keir

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