mlx4: Invoke softirqs after napi_reschedule
authorBenjamin Poirier <bpoirier@suse.com>
Mon, 6 Feb 2017 18:14:31 +0000 (10:14 -0800)
committerDavid S. Miller <davem@davemloft.net>
Tue, 7 Feb 2017 17:50:43 +0000 (12:50 -0500)
commitbd4ce941c8d5b862b2f83364be5dbe8fc8ab48f8
tree8ea7e9d7ea1bba5e9f98ed8fdb22a6d9b2e2c67f
parent69629464e0b587f3711739b3aa2bcdaf2e075276
mlx4: Invoke softirqs after napi_reschedule

mlx4 may schedule napi from a workqueue. Afterwards, softirqs are not run
in a deterministic time frame and the following message may be logged:
NOHZ: local_softirq_pending 08

The problem is the same as what was described in commit ec13ee80145c
("virtio_net: invoke softirqs after __napi_schedule") and this patch
applies the same fix to mlx4.

Fixes: 07841f9d94c1 ("net/mlx4_en: Schedule napi when RX buffers allocation fails")
Cc: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: Benjamin Poirier <bpoirier@suse.com>
Acked-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: Tariq Toukan <tariqt@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
drivers/net/ethernet/mellanox/mlx4/en_rx.c