24/02/2024 09:21, Tyler Retzlaff:
> Update prefetch inline functions to access rte_mbuf struct fields
> directly instead of via cacheline{0,1} marker extension fields.
>
> Signed-off-by: Tyler Retzlaff <roret...@linux.microsoft.com>
[...]
> rte_mbuf_prefetch_part1(struct rte_mbuf *m)
> {
> - rte_prefetch0(&m->cacheline0);
> + rte_prefetch0(&m->buf_addr);
Should be simply "m", no need to point to the first field explicitly.
[...]
> rte_mbuf_prefetch_part2(struct rte_mbuf *m)
> {
> #if RTE_CACHE_LINE_SIZE == 64
> - rte_prefetch0(&m->cacheline1);
> +#if RTE_IOVA_IN_MBUF
> + rte_prefetch0(&m->next);
> +#else
> + rte_prefetch0(&m->dynfield2);
> +#endif
I think it is better to calculate m + min cache line size
instead of relying on fields.
