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Date: Tue, 29 Sep 2020 18:10:48 -0700 (PDT) From: David Miller <davem@...emloft.net> To: lorenzo@...nel.org Cc: netdev@...r.kernel.org, brouer@...hat.com, lorenzo.bianconi@...hat.com, ilias.apalodimas@...aro.org Subject: Re: [PATCH net-next] net: mvneta: avoid possible cache misses in mvneta_rx_swbm From: Lorenzo Bianconi <lorenzo@...nel.org> Date: Tue, 29 Sep 2020 23:58:57 +0200 > Do not use rx_desc pointers if possible since rx descriptors are stored in > uncached memory and dereferencing rx_desc pointers generate extra loads. > This patch improves XDP_DROP performance of ~ 110Kpps (700Kpps vs 590Kpps) > on Marvell Espressobin > > Analyzed-by: Ilias Apalodimas <ilias.apalodimas@...aro.org> > Signed-off-by: Lorenzo Bianconi <lorenzo@...nel.org> Applied.
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