042a53a9e4
skb_dma_unmap() is quite expensive for small packets, because we use two different cache lines from skb_shared_info. One to access nr_frags, one to access dma_maps[0] Instead of dma_maps being an array of MAX_SKB_FRAGS + 1 elements, let dma_head alone in a new dma_head field, close to nr_frags, to reduce cache lines misses. Tested on my dev machine (bnx2 & tg3 adapters), nice speedup ! Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net> |
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| .. | ||
| e1000_ethtool.c | ||
| e1000_hw.c | ||
| e1000_hw.h | ||
| e1000_main.c | ||
| e1000_osdep.h | ||
| e1000_param.c | ||
| e1000.h | ||
| Makefile | ||