diff options
| author |   Eric Dumazet <eric.dumazet@gmail.com> | 2011-11-17 03:13:26 +0000 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2011-11-17 17:06:08 -0500 |
| commit | adc9300e78e6091a7eaa1821213836379d4dbaa8 (patch) | |
| tree | b2d075990b32e8c21129851bf1b1adf4cdc441f1 /include/linux/console_struct.h | |
| parent | ibm/emac: fix improper cleanup when device is removed to allow re-bind (diff) | |
net: use jump_label to shortcut RPS if not setup
Most machines dont use RPS/RFS, and pay a fair amount of instructions in
netif_receive_skb() / netif_rx() / get_rps_cpu() just to discover
RPS/RFS is not setup.
Add a jump_label named rps_needed.
If no device rps_map or global rps_sock_flow_table is setup,
netif_receive_skb() / netif_rx() do a single instruction instead of many
ones, including conditional jumps.
jmp +0 (if CONFIG_JUMP_LABEL=y)
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
CC: Tom Herbert <therbert@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/linux/console_struct.h')
0 files changed, 0 insertions, 0 deletions