Re: [dpdk-dev] free a memzone

[Mahdi Dashtbozorgi <mdasht@gmail.com>]

Hi guys,

Is there any suggestion to free the previously allocated memzone?
I really need help in this issue.
Any help is appreciated.

Best Regards,
Mahdi.



On Tue, Jul 22, 2014 at 4:03 PM, Mahdi Dashtbozorgi <mdasht@gmail.com>
wrote:

> Hi,
>
> I have two processes, which uses DPDK multi-process feature to communicate.
> Master process captures packets from NIC and put them to a ring buffer,
> which is shared between master and slave process.
> The slave process looks up the shared ring buffer using rte_ring_lookup
> function and reads the packets.
> The slave process needs a memory pool, too. Therefore, it creates a
> mempool using rte_mempool_create. But If the slave process crashes during
> its processing and runs again, rte_mempool_create function fails and tells
> that there is a memory zone with that name.
> If I use rte_mempool_lookup in this case, the memory pool is not a clean
> memory pool. Because the previous run of slave process did not terminate
> gracefully and did not return all the objects to the pool.
> Is there any function to free an existing memory zone, which I call before
> rte_mempool_create to ensure that previous memory pool does not exists
> anymore?
>
> Best Regards,
> Mahdi.
>