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Date: Mon, 02 Feb 2009 14:24:14 +0200
From: Andriy Gapon <avg@icyb.net.ua>
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To: Rui Paulo <rpaulo@freebsd.org>
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Cc: freebsd-hackers@freebsd.org
Subject: Re: INTR_FILTER?
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on 02/02/2009 14:17 Rui Paulo said the following:
> 
> On 2 Feb 2009, at 12:01, Andriy Gapon wrote:
> 
>
>> I may be wrong but this could auto-magically improve some cases where
>> there are shared interrupts between drivers with ithreads. In this case,
>> I think, their interrupt handler would be run "in parallel" instead of
>> sequentially.
> 
> I haven't read the details of the implementation yet, but how does that
> work?

As I understand, in non-INTR_FILTER case there is one ithread per
interrupt vector ("IRQ"), in INTR_FILTER case there is an ithread per
handler ("driver"). This is a little bit simplified.

-- 
Andriy Gapon