Messages in this thread | | | From | Daniel Phillips <> | Subject | Re: [2.4.17/18pre] VM and swap - it's really unusable | Date | Sun, 13 Jan 2002 23:02:27 +0100 |
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On January 12, 2002 09:21 pm, Alan Cox wrote: > > > 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. > > > > Well, if IRQs are disabled we won't have the timer... would not the > > system panic anyhow if schedule() was called while in an interrupt > > handler? > > You completely misunderstand. > > disable_irq(n) > > I disable a single specific interrupt, I don't disable the timer interrupt. > Your code doesn't seem to handle that. Its just one of the examples of where > you really need priority handling, and thats a horrible dark and slippery > slope
He just needs to disable preemption there, it's just a slight mod to disable/enable_irq. You probably have a few more of those, though...
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