From: Alexander Lobakin Date: Tue, 23 Nov 2021 17:18:34 +0000 (+0100) Subject: i40e: switch to napi_build_skb() X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=6e19cf7d3815c009bfd213832a6feac4bafc37ae;p=linux.git i40e: switch to napi_build_skb() napi_build_skb() reuses per-cpu NAPI skbuff_head cache in order to save some cycles on freeing/allocating skbuff_heads on every new Rx or completed Tx. i40e driver runs Tx completion polling cycle right before the Rx one and uses napi_consume_skb() to feed the cache with skbuff_heads of completed entries, so it's never empty and always warm at that moment. Switch to the napi_build_skb() to relax mm pressure on heavy Rx. Signed-off-by: Alexander Lobakin Reviewed-by: Michal Swiatkowski Tested-by: Gurucharan G Signed-off-by: Tony Nguyen --- diff --git a/drivers/net/ethernet/intel/i40e/i40e_txrx.c b/drivers/net/ethernet/intel/i40e/i40e_txrx.c index 10a83e5385c70..9e3991caa5c9d 100644 --- a/drivers/net/ethernet/intel/i40e/i40e_txrx.c +++ b/drivers/net/ethernet/intel/i40e/i40e_txrx.c @@ -2204,7 +2204,7 @@ static struct sk_buff *i40e_build_skb(struct i40e_ring *rx_ring, net_prefetch(xdp->data_meta); /* build an skb around the page buffer */ - skb = build_skb(xdp->data_hard_start, truesize); + skb = napi_build_skb(xdp->data_hard_start, truesize); if (unlikely(!skb)) return NULL;