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| author | Alexander Lobakin <alexandr.lobakin@intel.com> | 2021-11-23 18:18:34 +0100 |
|---|---|---|
| committer | Tony Nguyen <anthony.l.nguyen@intel.com> | 2021-12-28 09:42:33 -0800 |
| commit | 6e19cf7d3815c009bfd213832a6feac4bafc37ae (patch) | |
| tree | d8adf19bccc5255c8c42527f0221d00756b32056 /drivers | |
| parent | 89a354c03b2d097f9d580cc48249ca396d027e68 (diff) | |
| download | lwn-6e19cf7d3815c009bfd213832a6feac4bafc37ae.tar.gz lwn-6e19cf7d3815c009bfd213832a6feac4bafc37ae.zip | |
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 <alexandr.lobakin@intel.com>
Reviewed-by: Michal Swiatkowski <michal.swiatkowski@linux.intel.com>
Tested-by: Gurucharan G <gurucharanx.g@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/net/ethernet/intel/i40e/i40e_txrx.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/net/ethernet/intel/i40e/i40e_txrx.c b/drivers/net/ethernet/intel/i40e/i40e_txrx.c index 10a83e5385c7..9e3991caa5c9 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; |