Messages in this thread | | | Subject | Re: [PATCH 1/3] Separate IRQ-stacks from 4K-stacks option | From | Alan Cox <> | Date | Wed, 20 Oct 2004 19:51:53 +0100 |
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On Mer, 2004-10-20 at 17:39, Lee Revell wrote: > The IDE I/O completion in hardirq context means that one can run for > almost 3ms. Apparently at OLS it was decided that the target for > desktop responsiveness was 1ms. So this is a real problem. > > What exactly do you mean by "draconian"?
It means "fix the ide layer", patches welcome.
Doing 4K IRQ stacks is actually not the problem - nor really is nesting. If that worries you then get_free_page() the irq structure and use the rest for the stack for _that_ IRQ handler. You won't need that much memory.
Alan
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