[PATCH] mempool: add object usage counts for the telemetry api

[Morten Brørup]

+CC mempool maintainers

> From: Robin Jarry [mailto:rjarry at redhat.com]
> Sent: Tuesday, 15 November 2022 16.36
> 
> rte_mempool_dump() already returns the number of objects available and
> in the cache. This information is missing from the telemetry API. Add
> it
> albeit with less granularity for cached counts (only report the
> total_cache_count).
> 
> Signed-off-by: Robin Jarry <rjarry at redhat.com>
> ---

Please consider that the individual per-lcore cache lengths could be informative for some applications too.

Anyway, they could be provided in a later patch.

Acked-by: Morten Brørup <mb at smartsharesystems.com>