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author | Eric Dumazet <edumazet@google.com> | 2014-10-05 12:35:13 +0300 |
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committer | David S. Miller <davem@davemloft.net> | 2014-10-06 01:04:15 -0400 |
commit | 3d03641cb4ea050f969dd3ab34113adb95287f36 (patch) | |
tree | b1cbd2ba62c956e93d88ccde59437d46b21e13da /fs | |
parent | dc9b06d156cefb95f7f6a3ac0521a3efa31d6805 (diff) | |
download | op-kernel-dev-3d03641cb4ea050f969dd3ab34113adb95287f36.zip op-kernel-dev-3d03641cb4ea050f969dd3ab34113adb95287f36.tar.gz |
net/mlx4_en: Avoid a cache line miss in TX completion for single frag skb's
Add frag0_dma/frag0_byte_count into mlx4_en_tx_info to avoid a cache
line miss in TX completion for frames having one dma element. (We avoid
reading back the tx descriptor)
Note this could be extended to 2/3 dma elements later, as we have free
room in mlx4_en_tx_info
Also, mlx4_en_free_tx_desc() no longer accesses skb_shinfo(). We use a
new nr_maps fields in mlx4_en_tx_info to avoid 2 or 3 cache misses.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Amir Vadai <amirv@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'fs')
0 files changed, 0 insertions, 0 deletions