diff options
| author | Tom Herbert <therbert@google.com> | 2010-05-05 18:02:27 +0400 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2010-05-06 08:11:25 +0400 |
| commit | 9ed318d546a29d7a591dbe648fd1a2efe3be1180 (patch) | |
| tree | adcccd4b9c015d0d81fbce1928c135b269ac1d26 /drivers/net/e1000e/e1000.h | |
| parent | 4447957a825031b3faf3b5bc2013afe35eff492b (diff) | |
| download | linux-9ed318d546a29d7a591dbe648fd1a2efe3be1180.tar.xz | |
e1000e: save skb counts in TX to avoid cache misses
In e1000_tx_map, precompute number of segements and bytecounts which
are derived from fields in skb; these are stored in buffer_info. When
cleaning tx in e1000_clean_tx_irq use the values in the associated
buffer_info for statistics counting, this eliminates cache misses
on skb fields.
Signed-off-by: Tom Herbert <therbert@google.com>
Acked-by: Bruce Allan <bruce.w.allan@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/e1000e/e1000.h')
| -rw-r--r-- | drivers/net/e1000e/e1000.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/net/e1000e/e1000.h b/drivers/net/e1000e/e1000.h index 906c4daaabe9..c0b3db40bd73 100644 --- a/drivers/net/e1000e/e1000.h +++ b/drivers/net/e1000e/e1000.h @@ -189,6 +189,8 @@ struct e1000_buffer { unsigned long time_stamp; u16 length; u16 next_to_watch; + unsigned int segs; + unsigned int bytecount; u16 mapped_as_page; }; /* Rx */ |