Eric Dumazet 042a53a9e4 net: skb_shared_info optimization ... 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>		2009-06-08 00:21:48 -07:00
..
e1000_ethtool.c	e1000: Use device_set_wakeup_enable	2008-11-16 01:35:56 -08:00
e1000_hw.c	trivial: fix then -> than typos in comments and documentation	2009-01-06 11:28:06 +01:00
e1000_hw.h	e1000: convert uint16_t style integers to u16	2008-04-16 20:41:45 -04:00
e1000_main.c	net: skb_shared_info optimization	2009-06-08 00:21:48 -07:00
e1000_osdep.h	e1000: Remove spaces after casts and function names	2008-07-22 19:38:52 -04:00
e1000_param.c	e1000: fix stack size	2008-08-27 13:56:27 -07:00
e1000.h	e1000: drop lltx, remove unnecessary lock	2009-01-21 14:42:47 -08:00
Makefile	e100, e1000, ixgb: update copyright header and remove LICENSE	2006-09-27 12:53:14 -07:00