rte_ring_elem_pvt historical question

[Konstantin Ananyev]

04/07/2022 12:35, Morten Brørup пишет:
> Does anyone here remember why the __rte_ring_enqueue/dequeue_elems_64/128() functions support unaligned object arrays, when the __rte_ring_enqueue/dequeue_elems_32() functions require 4 byte aligned object arrays?

As I remember, we added 'unaligned' to be able to use rte_ring with 
elements that might have smaller alignment.
For 32 - as I remember we never explicitly require 4B aligned
objects for the rings ... Am I missing something here?
My guess, we just never hit such problem so it gets unnoticed.
Probably worth updating 32-bit version too with explicit 'unaligned' type.


> 
> I'm wondering if the compiler could do better with a simpler implementation than the manually implemented loop unrolls, and if the unalignment silliness would stand in the way.
> 
> Med venlig hilsen / Kind regards,
> -Morten Brørup
>