sfc: don't score irq moderation points for GRO

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We already scored points when handling the RX event, no-one else does this,
 and looking at the history it appears this was originally meant to only
 score on merges, not on GRO_NORMAL.  Moreover, it gets in the way of
 changing GRO to not immediately pass GRO_NORMAL skbs to the stack.
Performance testing with four TCP streams received on a single CPU (where
 throughput was line rate of 9.4Gbps in all tests) showed a 13.7% reduction
 in RX CPU usage (n=6, p=0.03).

Signed-off-by: Edward Cree <ecree@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

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Edward Cree 2019-08-06 14:53:20 +01:00 • committed by David S. Miller

parent 5e6d9fc761

commit 5e040d4b1a

1 changed files with 1 additions and 4 deletions

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drivers/net/ethernet/sfc/rx.c

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