* Benjamin Herrenschmidt <benh@kernel.crashing.org> wrote: > > dont worry, it's -rt only stuff. > > Still, I'm curious :-) Besides, there have been people talking about > having -rt work on ppc64 so ... ok :) > What do you need an ack() for on fasteoi ? On all fasteoi controllers > I have, ack is implicit by obtaining the vector number and all there > is is an eoi... it's a compatibility hack only. Threaded handlers are a different type of flow, but often the fasteoi handler is not changed to the threaded handler so i changed it to be a threaded handler too. threaded handlers need a mask() + an ack(), because that's the correct model to map them to kernel threads - threaded handlers can be delayed for a long time if something higher-prio is preempting them. Ingo - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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