[PATCH] rcu: add deprecation notice about limit on defer queue element size

[Thomas Monjalon]

23/05/2025 01:37, Andre Muezerie:
> The functions rte_rcu_qsbr_dq_create and rte_rcu_qsbr_dq_reclaim establish
> no limit on the size of each element in the defer queue.

Very good, we need more unlimited API in DPDK.

> With DPDK 25.11 a hard limit will be set (``RTE_QSBR_ESIZE_MAX``).

I think it is a step in the wrong direction.
I prefer having no limit.

> This will allow fixed C arrays to be used in the functions' implementations,
> avoiding VLAs and use of alloca().

I don't understand this justification.
Why trying to remove the 2 alloca() in the lib RCU?