diff options
| author | Wenliang Wang <wangwenliang.1995@bytedance.com> | 2023-05-04 10:27:06 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2023-05-17 11:50:19 +0200 |
| commit | a0cb00295dbeeacfbdf316f9d10e856f5b4ae2d3 (patch) | |
| tree | 4ceddd8b3974ce247559194b09135fa209bffdb1 /drivers/net/virtio_net.c | |
| parent | b4e16ea5f14655183133bf93b557321c291648b7 (diff) | |
virtio_net: suppress cpu stall when free_unused_bufs
[ Upstream commit f8bb5104394560e29017c25bcade4c6b7aabd108 ]
For multi-queue and large ring-size use case, the following error
occurred when free_unused_bufs:
rcu: INFO: rcu_sched self-detected stall on CPU.
Fixes: 986a4f4d452d ("virtio_net: multiqueue support")
Signed-off-by: Wenliang Wang <wangwenliang.1995@bytedance.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'drivers/net/virtio_net.c')
| -rw-r--r-- | drivers/net/virtio_net.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c index cff3e2a7ce7f..9f2d691908b4 100644 --- a/drivers/net/virtio_net.c +++ b/drivers/net/virtio_net.c @@ -2844,12 +2844,14 @@ static void free_unused_bufs(struct virtnet_info *vi) struct virtqueue *vq = vi->sq[i].vq; while ((buf = virtqueue_detach_unused_buf(vq)) != NULL) virtnet_sq_free_unused_buf(vq, buf); + cond_resched(); } for (i = 0; i < vi->max_queue_pairs; i++) { struct virtqueue *vq = vi->rq[i].vq; while ((buf = virtqueue_detach_unused_buf(vq)) != NULL) virtnet_rq_free_unused_buf(vq, buf); + cond_resched(); } } |