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| author |   Eric Dumazet <edumazet@google.com> | 2024-10-18 05:23:10 +0000 |
|---|---|---|
| committer |   Paolo Abeni <pabeni@redhat.com> | 2024-10-23 13:31:45 +0200 |
| commit | 7cfc1b1fa8673fe386304194d4cc2c8fe555bbf9 (patch) | |
| tree | efde842719e85046a316d77f0ea98ca2f35e1837 | |
| parent | netpoll: remove ndo_netpoll_setup() second argument (diff) | |
| download | wireguard-linux-7cfc1b1fa8673fe386304194d4cc2c8fe555bbf9.tar.xz wireguard-linux-7cfc1b1fa8673fe386304194d4cc2c8fe555bbf9.zip | |
net: netdev_tx_sent_queue() small optimization
Change smp_mb() imediately following a set_bit()
with smp_mb__after_atomic().
Signed-off-by: Eric Dumazet <edumazet@google.com>
Link: https://patch.msgid.link/20241018052310.2612084-1-edumazet@google.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
| -rw-r--r-- | include/linux/netdevice.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h index 86a0b7eb9461..bbd30f3c5d29 100644 --- a/include/linux/netdevice.h +++ b/include/linux/netdevice.h @@ -3517,7 +3517,7 @@ static inline void netdev_tx_sent_queue(struct netdev_queue *dev_queue, * because in netdev_tx_completed_queue we update the dql_completed * before checking the XOFF flag. */ - smp_mb(); + smp_mb__after_atomic(); /* check again in case another CPU has just made room avail */ if (unlikely(dql_avail(&dev_queue->dql) >= 0)) |