tree e542a4ed151de034779fa311f8d89a55ac90f685
parent 43e683926f808cec9802466c27cee7499eda3d11
author Eric Dumazet <dada1@cosmosbay.com> 1173241390 -0800
committer David S. Miller <davem@sunset.davemloft.net> 1177565029 -0700

[IPV4]: Optimize inet_getpeer()

1) Some sysctl vars are declared __read_mostly

2) We can avoid updating stack[] when doing an AVL lookup only.

    lookup() macro is extended to receive a second parameter, that may be NULL
in case of a pure lookup (no need to save the AVL path). This removes
unnecessary instructions, because compiler knows if this _stack parameter is
NULL or not.

    text size of net/ipv4/inetpeer.o is 2063 bytes instead of 2107 on x86_64

Signed-off-by: Eric Dumazet <dada1@cosmosbay.com>
Signed-off-by: David S. Miller <davem@davemloft.net>