On Fri, 4 Sep 2015, Alexander Duyck wrote:

were to create a per-cpu pool for skbs that could be freed and allocated in
NAPI context.  So for example we already have napi_alloc_skb, why not just add
a napi_free_skb and then make the array of objects to be freed part of a pool
that could be used for either allocation or freeing?  If the pool runs empty
you just allocate something like 8 or 16 new skb heads, and if you fill it you
just free half of the list?

The slab allocators provide something like a per cpu pool for you to
optimize object alloc and free.

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