On 12/22/2017 7:29 PM, Olivier MATZ wrote:
On Wed, Dec 20, 2017 at 05:29:59PM +0530, Hemant Agrawal wrote:
On 12/19/2017 6:38 PM, Hemant Agrawal wrote:

That's true, I commented too fast :)
And what about using mp->nb_mem_chunks instead? Would it do the job
in your use-case?

It should work.  Let me check it out.

There is a slight problem with nb_mem_chunks.

It is getting incremented in the end of "rte_mempool_populate_phys",
while the elements are getting populated before it in the call of
mempool_add_elem.

I can use nb_mem_chunks are '0' check. However it can break in future if
mempool_populate_phys changes.

Sorry, I'm not sure I'm getting what you say.

My question was about using mp->nb_mem_chunks instead of a new flag in the
dppa driver. Am I missing something?


mp->nb_mem_chunks gets finalized when the mempool is fully created. It's value is transient before that i.e. it will keep on changing on the every call to rte_mempool_populate_phys.

However, we need this information on the very first element allocation. So, nb_mem_chunks will not work.

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