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  • linux-arm
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  • sock.h
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  • Eric Dumazet's avatar
    udp: use atomic_inc_not_zero_hint · c31504dc
    Eric Dumazet authored Nov 15, 2010
    
    
    UDP sockets refcount is usually 2, unless an incoming frame is going to
    be queued in receive or backlog queue.
    
    Using atomic_inc_not_zero_hint() permits to reduce latency, because
    processor issues less memory transactions.
    
    Signed-off-by: default avatarEric Dumazet <eric.dumazet@gmail.com>
    Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
    c31504dc