[PATCH v8 RFC 0/3] Generic IOMMU pooled allocator

[Benjamin Herrenschmidt]

On Tue, 2015-03-31 at 14:06 -0400, Sowmini Varadhan wrote:
> Having bravely said that..
> 
> the IB team informs me that they see a 10% degradation using 
> the spin_lock as opposed to the trylock.
> 
> one path going forward is to continue processing this patch-set 
> as is. I can investigate this further, and later revise the spin_lock
> to the trylock, after we are certain that it is good/necessary.

Have they tried using more pools instead ?

Cheers,
Ben.