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    SubjectRe: [2.4.17/18pre] VM and swap - it's really unusable
    Alan Cox wrote:

    > > > PRE-EMPT:
    > > > We get back and we've missed 300 packets, the serial port sharing
    > > > the IRQ has dropped our internet connection completely.
    > >
    > > We don't preempt while IRQ are disabled.
    >
    > I must have missed that in the code. I can see you check __cli() status but
    > I didn't see anywhere you check disable_irq(). Even if you did it doesnt
    > help when I mask the irq on the chip rather than using disable_irq() calls.
    >
    > Alan

    But you get interrupted by other interrups then so you have the same problem
    reagardless of any preemtion patch you hopefully lose the cpu for a much
    shorter time but still the same problem.


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