From: Måns Rullgård <m...@mansr.com> Date: Wed, 11 Nov 2015 00:40:09 +0000
> When the DMA complete interrupt arrives, the next chain should be > kicked off as quickly as possible, and I don't see why that would > benefit from being done in napi context. NAPI isn't about low latency, it's about fairness and interrupt mitigation. You probably don't even realize that all of the TX SKB freeing you do in the hardware interrupt handler end up being actually processed by a scheduled software interrupt anyways. So you are gaining almost nothing by not doing TX completion in NAPI context, whereas by doing so you would be gaining a lot including more simplified locking or even the ability to do no locking at all. -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
