INTR_FILTER?

[Andriy Gapon]

on 30/01/2009 15:08 Paolo Pisati said the following:
> Andriy Gapon wrote:
>> INTR_FILTER - what does it do?
>> It doesn't seem to be documented anywhere, but seems to affect interrupt
>> code.
>>
>>   
> for a bit more information about interrupt filtering, see here:
> 
> http://lists.freebsd.org/pipermail/freebsd-hackers/2007-February/019704.html

Paolo,

so would it be correct to say that INTR_FILTER is designed to make life
much easier in view of shared interrupts.
>From the code it seems that there would be virtually no difference when
there are no shared interrupt, but with shared interrupts INTR_FILTER
removes all the churn and makes interrupt handling nice and clean (from
device drivers point of view).



-- 
Andriy Gapon