net: mvneta: avoid possible cache misses in mvneta_rx_swbm

Browse source

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@linaro.org>
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

...

This commit is contained in:

Lorenzo Bianconi 2020-09-29 23:58:57 +02:00 • committed by David S. Miller

parent 2b2706aaae

commit 879456bedb

1 changed files with 6 additions and 6 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

12

drivers/net/ethernet/marvell/mvneta.c

View file