Re: [dpdk-dev] free a memzone

["Richardson, Bruce" <bruce.richardson@intel.com>]

Rather than freeing the previously allocated memzone, could you not just re-initialize the mempool using something like rte_mempool_xmem_create?

> -----Original Message-----
> From: dev [mailto:dev-bounces@dpdk.org] On Behalf Of Mahdi Dashtbozorgi
> Sent: Wednesday, July 23, 2014 2:05 AM
> To: dev@dpdk.org
> Subject: Re: [dpdk-dev] free a memzone
> 
> 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.
> >