net: macvlan: change schedule system_wq to system_unbound_wq

For FT2000+/64 devices,
when four virtual machines share the same physical network interface,
DROP will occur due to the single core CPU performance problem.

ip_check_defrag and macvlan_process_broadcast is on the same CPU.
When the MACVLAN PORT increases, the CPU usage reaches more than 90%.
bc_queue > bc_queue_len_used (default 1000), causing DROP.

Signed-off-by: zhangxiangqian <zhangxiangqian@kylinos.cn>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/macvlan.c b/drivers/net/macvlan.c
index 8f8f73099de8d8308b45b7e3bf9179e8311182ee..c5cfe85551992a07f8c6d9878eff4f292d30763a 100644 (file)
--- a/drivers/net/macvlan.c
+++ b/drivers/net/macvlan.c
@@ -361,7 +361,7 @@ static void macvlan_broadcast_enqueue(struct macvlan_port *port,
        }
        spin_unlock(&port->bc_queue.lock);
 
-       schedule_work(&port->bc_work);
+       queue_work(system_unbound_wq, &port->bc_work);
 
        if (err)
                goto free_nskb;