On 05/13/2015 12:14 PM, Gonzalez Monroy, Sergio wrote: > On 12/05/2015 15:48, Olivier MATZ wrote: >> Hi Sergio, >> >> On 05/06/2015 06:10 PM, Gonzalez Monroy, Sergio wrote: >>> Hi, >>> >>> I was wondering about the use case of rte_memzone_reserve_xxxx APIs with >>> len=0. >>> >>> From the docs (http://dpdk.org/doc/api/rte__memzone_8h.html): >>> len The size of the memory to be reserved. If it is 0, the >>> biggest contiguous zone will be reserved. >>> >>> What are the use cases? >>> When would you want a memzone of undetermined size? >>> >>> Any thoughts appreciated. >> >> As the application does not have access to the lengths of memory >> segments, probably the initial idea is when an application wants >> to allocate more memory that the biggest segment. >> >> Example, the application wants to allocate 1G (even fragmented): >> >> - the easy case is when it can be done in one call to >> rte_memzone_reserve(1G) >> >> - else, the application can iterate like in this sample: >> >> remain = 1 * 1024 * 1024 * 1024; >> while (remain > 0) { >> mz = rte_memzone_reserve(remain); >> if (mz != NULL) >> return 0; >> mz = rte_memzone_reserve(remain); > You meant rte_memzone_reserve(0) here, right?
yes, sorry for the typo
