Re: [Xen-devel] [PATCH 00/12] cpumask handling scalability improvements

[Keir Fraser <keir@xxxxxxx>]

On 20/10/2011 16:19, "Jan Beulich" <JBeulich@xxxxxxxx> wrote:

>>> 06: allow efficient allocation of multiple CPU masks at once
>> 
>> That is utterly hideous and for insignificant saving.
> 
> I was afraid you would say that, and I'm not fully convinced
> either. But I wanted to give it a try to see how bad it is. The
> more significant saving here really comes from not allocating
> the CPU masks at all for unused irq_desc-s.

Aren't we planning to dynamically allocate irq_desc-s? That would seem the
nicer solution here.

 -- Keir



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