Messages in this thread | | | Date | Mon, 14 Mar 2005 14:06:10 +1100 | From | Peter Chubb <> | Subject | Re: User mode drivers: part 1, interrupt handling (patch for 2.6.11) |
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>>>>> "Jon" == Jon Smirl <jonsmirl@gmail.com> writes:
Jon> On Mon, 14 Mar 2005 12:42:27 +1100, Peter Chubb Jon> <peterc@gelato.unsw.edu.au> wrote: >> >>>>> "Jon" == Jon Smirl <jonsmirl@gmail.com> writes: >> >> >> The scenario I'm thinking about with these patches are things >> like >> low-latency user-level networking between nodes in a >> cluster, where >> for good performance even with a kernel driver >> you don't want to >> share your interrupt line with anything else.
Jon> Instead of making up a new API what about making a library of Jon> calls that emulates the common entry points used by device Jon> drivers. The version I did for UML could take the same driver and Jon> run it in user space or the kernel without changing source Jon> code. I found this very useful.
The in-kernel device drivers interface is very large --- I want to start with something a bit simpler. We do have a compatibility library, as yet unreleased, that allows the same drivers to run in-kernel or in user space.
-- Dr Peter Chubb http://www.gelato.unsw.edu.au peterc AT gelato.unsw.edu.au The technical we do immediately, the political takes *forever* - 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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