Hi, On 03/17/2016 04:49 PM, Lazaros Koromilas wrote: > Issuing a zero objects dequeue with a single consumer has no effect. > Doing so with multiple consumers, can get more than one thread to succeed > the compare-and-set operation and observe starvation or even deadlock in > the while loop that checks for preceding dequeues. The problematic piece > of code when n = 0: > > cons_next = cons_head + n; > success = rte_atomic32_cmpset(&r->cons.head, cons_head, cons_next); > > The same is possible on the enqueue path. > > Signed-off-by: Lazaros Koromilas <l at nofutznetworks.com>
Acked-by: Olivier Matz <olivier.matz at 6wind.com>
