[dpdk-dev] RTE Ring removing
Igor Ryzhov
iryzhov at arccn.ru
Wed May 7 09:54:23 CEST 2014
Hello again.
I did some investigation on the code.
I learned that RTE Ring creation function uses functions related to RTE
Memzone to reserve memory (rte_memzone_reserve).
Documentation states that once reserved memzone can not be unreserved. I
decided to find out why it is so.
I noticed that in Memzone realization there is a special global variable
"free_memseg" containing pointers on free memory segments.
An memzone reserve function just finst the best segment for allocation
from this "free_memseg" variable.
So I think there is a possibility to unreserve already reserved memory
back to "free_memseg", and impossibility of unreserving memory is just
because there is no function for that, not because it is impossible in
principle.
Am I right? Or there are any restrictions?
Best regards,
Igor Ryzhov
06.05.2014 13:05, Igor Ryzhov пишет:
> Hello.
>
> For what reason RTE Rings can not be removed once created?
> In my application I want to use many rings with different names so I
> think there may be a problem with memory because of many ring that
> already not in use, but allocated.
> Or DPDK has a mechanism of reusing memory if rings are not in use?
>
> Best regards,
> Igor Ryzhov
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