[PATCH v8 0/7] Lcore variables

[Mattias Rönnblom]

On 2024-10-11 16:23, Stephen Hemminger wrote:
> On Thu, 10 Oct 2024 16:13:42 +0200
> Mattias Rönnblom <mattias.ronnblom at ericsson.com> wrote:
> 
>> This patch set introduces a new API <rte_lcore_var.h> for static
>> per-lcore id data allocation.
>>
>> Please refer to the <rte_lcore_var.h> API documentation for both a
>> rationale for this new API, and a comparison to the alternatives
>> available.
>>
>> The adoption of this API would affect many different DPDK modules, but
>> the author updated only a few, mostly to serve as examples in this
>> RFC, and to iron out some, but surely not all, wrinkles in the API.
>>
>> The question on how to best allocate static per-lcore memory has been
>> up several times on the dev mailing list, for example in the thread on
>> "random: use per lcore state" RFC by Stephen Hemminger.
>>
>> Lcore variables are surely not the answer to all your per-lcore-data
>> needs, since it only allows for more-or-less static allocation. In the
>> author's opinion, it does however provide a reasonably simple and
>> clean and seemingly very much performant solution to a real problem.
> 
> There should be a mention about whether this storage can be
> shared with other threads and processes. Is it like huge page
> memory or stack or heap?

Sure. I'll mention the memory is not in huge pages in the API docs.