• Eric Dumazet's avatar
    [IPV4]: Optimize inet_getpeer() · 243bbcaa
    Eric Dumazet authored
    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: default avatarEric Dumazet <dada1@cosmosbay.com>
    Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
    243bbcaa
inetpeer.c 14.9 KB