Re: [Xen-devel] [PATCH for-4.5 7/8] xen/irq: Handle multiple action per IRQ

[Julien Grall <julien.grall@xxxxxxxxxx>]

(Adding Jan for x86 part).

On 02/20/2014 09:29 PM, Julien Grall wrote:
> Hi Ian,
> 
> On 02/19/2014 11:55 AM, Ian Campbell wrote:
>> On Fri, 2014-01-24 at 16:43 +0000, Julien Grall wrote:
>>> On ARM, it may happen (eg ARM SMMU) to setup multiple handler for the same
>>> interrupt.
>>
>> Mention here that you are therefore creating a linked list of actions
>> for each interrupt.
>>
>> If you use xen/list.h for this then you get a load of helpers and
>> iterators which would save you open coding them.
> 
> After thinking, using xen/list.h won't really remove open code, except
> removing "action_ptr" in release_dt_irq.
> 
> Calling release_dt_irq to an IRQ with multiple action shouldn't be
> called often. Therefore, having both prev and next is a waste of space.

Jan, as it's common code, do you have any thoughts?

-- 
Julien Grall

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