Re: Interrupt handling in multi-processor environment
Re: Interrupt handling in multi-processor environment
- Subject: Re: Interrupt handling in multi-processor environment
- From: "Rob Cas" <email@hidden>
- Date: Wed, 19 Nov 2008 09:24:37 +1100
On Tue, Nov 18, 2008 at 8:46 PM, Chris Suter <email@hidden> wrote:
<snip>
> Is there a reason you need to use IOFilterInterruptEventSource rather than
> IOInterruptEventSource? I mean, is performance that critical and will there
> be a large number of ghost interrupts?
> -- Chris
I think filter event sources are appropriate (but am happy to stand
corrected). Our device generates several different kinds of interrupt
that are handled by different child IOService nubs containing their
own filter event sources that test whether the interrupt is of concern
to that nub.
Additionally, being attached to a shared interrupt controller
provided by our top nub's provider there appears to be interrupts
generated every 10usec - most of which are not generated by our device
and we should filter out and ignore.
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