diff options
| author |  Jie Wang <wangjie125@huawei.com>
| 2024-06-05 15:20:58 +0800 |
|---|---|---|
| committer |  David S. Miller <davem@davemloft.net>
| 2024-06-07 12:20:28 +0100 |
| commit | 968fde83841a8c23558dfbd0a0c69d636db52b55 (patch) | |
| tree | 48d34b4cbc01bf25c0ed72ca619ec151d05e0cae /drivers/net | |
| parent | net: hns3: fix kernel crash problem in concurrent scenario (diff) | |
| download | linux-968fde83841a8c23558dfbd0a0c69d636db52b55.tar.gz linux-968fde83841a8c23558dfbd0a0c69d636db52b55.tar.bz2 linux-968fde83841a8c23558dfbd0a0c69d636db52b55.zip | |
net: hns3: add cond_resched() to hns3 ring buffer init process
Currently hns3 ring buffer init process would hold cpu too long with big
Tx/Rx ring depth. This could cause soft lockup.
So this patch adds cond_resched() to the process. Then cpu can break to
run other tasks instead of busy looping.
Fixes: a723fb8efe29 ("net: hns3: refine for set ring parameters")
Signed-off-by: Jie Wang <wangjie125@huawei.com>
Signed-off-by: Jijie Shao <shaojijie@huawei.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net')
| -rw-r--r-- | drivers/net/ethernet/hisilicon/hns3/hns3_enet.c | 4 | ||||
| -rw-r--r-- | drivers/net/ethernet/hisilicon/hns3/hns3_enet.h | 2 |
2 files changed, 6 insertions, 0 deletions
diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c b/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c index ff71fb1eced9..a5fc0209d628 100644 --- a/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c +++ b/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c @@ -3535,6 +3535,9 @@ static int hns3_alloc_ring_buffers(struct hns3_enet_ring *ring) ret = hns3_alloc_and_attach_buffer(ring, i); if (ret) goto out_buffer_fail; + + if (!(i % HNS3_RESCHED_BD_NUM)) + cond_resched(); } return 0; @@ -5107,6 +5110,7 @@ int hns3_init_all_ring(struct hns3_nic_priv *priv) } u64_stats_init(&priv->ring[i].syncp); + cond_resched(); } return 0; diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3_enet.h b/drivers/net/ethernet/hisilicon/hns3/hns3_enet.h index acd756b0c7c9..d36c4ed16d8d 100644 --- a/drivers/net/ethernet/hisilicon/hns3/hns3_enet.h +++ b/drivers/net/ethernet/hisilicon/hns3/hns3_enet.h @@ -214,6 +214,8 @@ enum hns3_nic_state { #define HNS3_CQ_MODE_EQE 1U #define HNS3_CQ_MODE_CQE 0U +#define HNS3_RESCHED_BD_NUM 1024 + enum hns3_pkt_l2t_type { HNS3_L2_TYPE_UNICAST, HNS3_L2_TYPE_MULTICAST, |