A patch to simplify the MD interrupt code a bit..

[Sam Leffler]

Sam Leffler wrote:
> John Baldwin wrote:
>> This patch adds an MI intr_event_handle() routine for the non-FILTER 
>> case so that the MD code becomes identical in both cases and all the 
>> INTR_FILTER #ifdef's end up in kern_intr.c.  It's been tested on 
>> amd64, i386, and sparc64 and cross-compiled on ppc, arm, and ia64.  
>> I'd like to get it tested on arm as I slightly adjusted the MD code 
>> to just not bother masking the interrupt unless we are going to run 
>> an ithread which is mostly what the existing FILTER code did except 
>> that it unmasked the interrupt when it wasn't masked in the first 
>> place if a filter handled the interrupt.  Patch is at 
>> http://www.freebsd.org/~jhb/patches/intr_filter.patch
>>
>>   
> Seems to be ok on an AVILA board w/ latest HEAD.

Ooops, hold that.  Your patch doesn't apply cleanly and I missed that.  
Will try again tomorrow.

    Sam