Messages in this thread | | | Date | Wed, 31 May 2006 23:47:29 +0200 | From | Ingo Molnar <> | Subject | Re: [patch, -rc5-mm1] locking validator: special rule: 8390.c disable_irq() |
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* Arjan van de Ven <arjan@infradead.org> wrote:
> On Wed, 2006-05-31 at 17:41 -0400, Alan Cox wrote: > > On Wed, May 31, 2006 at 10:31:40PM +0200, Arjan van de Ven wrote: > > > > 8390.c knows that ei_local->page_lock can only be used by an irq > > > > context that it disabled - > > > > > > btw I think this is no longer correct with the irq polling stuff Alan > > > added to the kernel recently... > > > > We could make the misrouted IRQ logic skip all handlers on a disabled IRQ > > but that might actually be worse than the disease we are trying to cure by > > doing so. > > yeah since misrouted irqs will cause the kernel do disable irqs 'at > random' more or less .. for which the handlers now would become > unreachable which isn't good.
couldnt most of these problems be avoided by tracking whether a handler _ever_ returned a success status? That means that irqpoll could safely poll handlers for which we know that they somehow arent yet matched up to any IRQ line?
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