sfc: When waking a stopped tx_queue, only lock that tx_queue

Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/sfc/tx.c b/drivers/net/sfc/tx.c
index 1172698..03194f7 100644 (file)
--- a/drivers/net/sfc/tx.c
+++ b/drivers/net/sfc/tx.c
@@ -401,6 +401,7 @@ void efx_xmit_done(struct efx_tx_queue *tx_queue, unsigned int index)
 {
        unsigned fill_level;
        struct efx_nic *efx = tx_queue->efx;
+       struct netdev_queue *queue;
 
        EFX_BUG_ON_PARANOID(index > tx_queue->ptr_mask);
 
@@ -417,12 +418,15 @@ void efx_xmit_done(struct efx_tx_queue *tx_queue, unsigned int index)
 
                        /* Do this under netif_tx_lock(), to avoid racing
                         * with efx_xmit(). */
-                       netif_tx_lock(efx->net_dev);
+                       queue = netdev_get_tx_queue(
+                               efx->net_dev,
+                               tx_queue->queue / EFX_TXQ_TYPES);
+                       __netif_tx_lock(queue, smp_processor_id());
                        if (tx_queue->stopped) {
                                tx_queue->stopped = 0;
                                efx_wake_queue(tx_queue->channel);
                        }
-                       netif_tx_unlock(efx->net_dev);
+                       __netif_tx_unlock(queue);
                }
        }
 }