• Eric Dumazet's avatar
    inetpeer: Optimize inet_getid() · 2c1409a0
    Eric Dumazet authored
    While investigating for network latencies, I found inet_getid() was a
    contention point for some workloads, as inet_peer_idlock is shared
    by all inet_getid() users regardless of peers.
    One way to fix this is to make ip_id_count an atomic_t instead
    of __u16, and use atomic_add_return().
    In order to keep sizeof(struct inet_peer) = 64 on 64bit arches
    tcp_ts_stamp is also converted to __u32 instead of "unsigned long".
    Signed-off-by: default avatarEric Dumazet <eric.dumazet@gmail.com>
    Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
inetpeer.h 1.2 KB