From: Govindarajulu Varadarajan <[email protected]> Date: Thu, 25 Jun 2015 16:02:04 +0530
> We use spinlock to access a single flag. We can avoid spin_locks by using > atomic variable and atomic_cmpxchg(). Use atomic_cmpxchg to set the flag > for idle to poll. And a simple atomic_set to unlock (set idle from poll). > > In napi poll, if gro is enabled, we call napi_gro_receive() to deliver the > packets. Before we call napi_complete(), i.e while re-polling, if low > latency busy poll is called, we use netif_receive_skb() to deliver the > packets. > At this point if there are some skb's held in GRO, busy poll could deliver the > packets out of order. So we call napi_gro_flush() to flush skbs before we > move the napi poll to idle. > > Signed-off-by: Govindarajulu Varadarajan <[email protected]> Applied, thanks. -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
