diff options
| author |   Tariq Toukan <tariqt@mellanox.com> | 2020-08-26 15:54:16 +0300 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2020-08-26 15:55:53 -0700 |
| commit | f468f21b7af0fa472ff8ff70f10b9b4995ef7eb3 (patch) | |
| tree | 28a881ee0878c42efa3e4eb0aa55b75000c2f6d2 /drivers/net/ethernet/intel/i40e/i40e_txrx.c | |
| parent | Merge branch 'Add-Ethernet-support-for-Intel-Keem-Bay-SoC' (diff) | |
| download | linux-dev-f468f21b7af0fa472ff8ff70f10b9b4995ef7eb3.tar.xz linux-dev-f468f21b7af0fa472ff8ff70f10b9b4995ef7eb3.zip | |
net: Take common prefetch code structure into a function
Many device drivers use the same prefetch code structure to
deal with small L1 cacheline size.
Take this code into a function and call it from the drivers.
Suggested-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: Tariq Toukan <tariqt@mellanox.com>
Reviewed-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/intel/i40e/i40e_txrx.c')
| -rw-r--r-- | drivers/net/ethernet/intel/i40e/i40e_txrx.c | 12 |
1 files changed, 4 insertions, 8 deletions
diff --git a/drivers/net/ethernet/intel/i40e/i40e_txrx.c b/drivers/net/ethernet/intel/i40e/i40e_txrx.c index 3e5c566ceb01..432a984ac335 100644 --- a/drivers/net/ethernet/intel/i40e/i40e_txrx.c +++ b/drivers/net/ethernet/intel/i40e/i40e_txrx.c @@ -1992,10 +1992,8 @@ static struct sk_buff *i40e_construct_skb(struct i40e_ring *rx_ring, struct sk_buff *skb; /* prefetch first cache line of first page */ - prefetch(xdp->data); -#if L1_CACHE_BYTES < 128 - prefetch(xdp->data + L1_CACHE_BYTES); -#endif + net_prefetch(xdp->data); + /* Note, we get here by enabling legacy-rx via: * * ethtool --set-priv-flags <dev> legacy-rx on @@ -2078,10 +2076,8 @@ static struct sk_buff *i40e_build_skb(struct i40e_ring *rx_ring, * likely have a consumer accessing first few bytes of meta * data, and then actual data. */ - prefetch(xdp->data_meta); -#if L1_CACHE_BYTES < 128 - prefetch(xdp->data_meta + L1_CACHE_BYTES); -#endif + net_prefetch(xdp->data_meta); + /* build an skb around the page buffer */ skb = build_skb(xdp->data_hard_start, truesize); if (unlikely(!skb)) |