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author | Eric Dumazet <eric.dumazet@gmail.com> | 2011-11-17 03:13:26 +0000 |
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committer | David S. Miller <davem@davemloft.net> | 2011-11-17 17:06:08 -0500 |
commit | adc9300e78e6091a7eaa1821213836379d4dbaa8 (patch) | |
tree | b2d075990b32e8c21129851bf1b1adf4cdc441f1 /drivers/net/ethernet/broadcom/bnx2.c | |
parent | d6f144830bdfa5fcf116e9ab8fc6a60d23fa623d (diff) | |
download | op-kernel-dev-adc9300e78e6091a7eaa1821213836379d4dbaa8.zip op-kernel-dev-adc9300e78e6091a7eaa1821213836379d4dbaa8.tar.gz |
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 'drivers/net/ethernet/broadcom/bnx2.c')
0 files changed, 0 insertions, 0 deletions