From: "Wei Hu (Xavier)" <xavier.huwei@huawei.com>
To: <dledford@redhat.com>
Cc: <linux-rdma@vger.kernel.org>, <xavier.huwei@huawei.com>,
<lijun_nudt@163.com>, <oulijun@huawei.com>,
<charles.chenxin@huawei.com>, <liuyixian@huawei.com>,
<xushaobo2@huawei.com>, <zhangxiping3@huawei.com>,
<xavier.huwei@tom.com>, <linuxarm@huawei.com>,
<linux-kernel@vger.kernel.org>, <shaobohsu@163.com>
Subject: [PATCH for-next 9/9] RDMA/hns: Replace usleep_range with udelay when checking command status
Date: Thu, 28 Sep 2017 12:57:34 +0800 [thread overview]
Message-ID: <1506574654-56699-10-git-send-email-xavier.huwei@huawei.com> (raw)
In-Reply-To: <1506574654-56699-1-git-send-email-xavier.huwei@huawei.com>
From: Lijun Ou <oulijun@huawei.com>
It replaces usleep_range with udelay to avoid using usleep_range function
in spin_lock_bh spin region, because it probably cause calltrace.
BUG: scheduling while atomic: insmod/1428/0x00000002
Modules linked in: hns-roce-hw-v2(+) hns_roce rdma_ucm rdma_cm iw_cm ib_uverbs ib_cm ib_core
CPU: 0 PID: 1428 Comm: insmod Not tainted 4.12.0-rc1-00677-g252e8fd-dirty #43
Hardware name: (null) (DT)
Call trace:
[<ffff000008089d20>] dump_backtrace+0x0/0x274
[<ffff00000808a068>] show_stack+0x20/0x28
[<ffff00000844ea58>] dump_stack+0x94/0xb4
[<ffff0000080f975c>] __schedule_bug+0x68/0x84
[<ffff000008a988d4>] __schedule+0x5fc/0x70c
[<ffff000008a98a24>] schedule+0x40/0xa4
[<ffff000008a9c6f0>] schedule_hrtimeout_range_clock+0x98/0xfc
[<ffff000008a9c788>] schedule_hrtimeout_range+0x34/0x40
[<ffff000008a9c098>] usleep_range+0x6c/0x80
[<ffff000000b9ae68>] hns_roce_cmd_send+0xe4/0x264 [hns-roce-hw-v2]
[<ffff000000b9b748>] hns_roce_cmd_query_hw_info+0x40/0x60 [hns-roce-hw-v2]
[<ffff000000b9b790>] hns_roce_v2_profile+0x28/0x668 [hns-roce-hw-v2]
[<ffff000000b6b1f4>] hns_roce_init+0x6c/0x948 [hns-roce-hw-v2]
Signed-off-by: Lijun Ou <oulijun@huawei.com>
Signed-off-by: Wei Hu (Xavier) <xavier.huwei@huawei.com>
Signed-off-by: Shaobo Xu <xushaobo2@huawei.com>
---
drivers/infiniband/hw/hns/hns_roce_hw_v2.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/infiniband/hw/hns/hns_roce_hw_v2.c b/drivers/infiniband/hw/hns/hns_roce_hw_v2.c
index 90ef5c6..915d1d5 100644
--- a/drivers/infiniband/hw/hns/hns_roce_hw_v2.c
+++ b/drivers/infiniband/hw/hns/hns_roce_hw_v2.c
@@ -589,7 +589,7 @@ int hns_roce_cmq_send(struct hns_roce_dev *hr_dev,
do {
if (hns_roce_cmq_csq_done(hr_dev))
break;
- usleep_range(1000, 2000);
+ udelay(1);
timeout++;
} while (timeout < priv->cmq.tx_timeout);
}
--
1.9.1
prev parent reply other threads:[~2017-09-28 4:31 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-09-28 4:57 [PATCH for-next 0/9] Bug fixes & Code improvements in hip06 and hip08 RoCE driver Wei Hu (Xavier)
2017-09-28 4:57 ` [PATCH for-next 1/9] RDMA/hns: Modify the value with rd&dest_rd of qp_attr Wei Hu (Xavier)
2017-09-28 4:57 ` [PATCH for-next 2/9] RDMA/hns: Factor out the code for checking sdb status into a new function Wei Hu (Xavier)
2017-09-28 13:50 ` Leon Romanovsky
2017-09-29 2:05 ` Wei Hu (Xavier)
2017-09-28 4:57 ` [PATCH for-next 3/9] RDMA/hns: Add return statement when kzalloc return NULL in hns_roce_v1_recreate_lp_qp Wei Hu (Xavier)
2017-09-28 9:13 ` Leon Romanovsky
2017-09-28 11:56 ` Wei Hu (Xavier)
2017-09-28 12:59 ` Leon Romanovsky
2017-09-29 6:07 ` Wei Hu (Xavier)
2017-09-29 10:23 ` Leon Romanovsky
2017-09-29 13:15 ` Wei Hu (Xavier)
2017-09-28 4:57 ` [PATCH for-next 4/9] RDMA/hns: Set mask for destination qp field of qp context assignment Wei Hu (Xavier)
2017-09-28 4:57 ` [PATCH for-next 5/9] RDMA/hns: Set rdma_ah_attr type for querying qp Wei Hu (Xavier)
2017-09-28 4:57 ` [PATCH for-next 6/9] RDMA/hns: Add return statement when checking error in hns_roce_v1_mr_free_work_fn Wei Hu (Xavier)
2017-09-28 4:57 ` [PATCH for-next 7/9] RDMA/hns: Remove unnecessarily calling unregister_inetaddr_notifier function Wei Hu (Xavier)
2017-09-28 4:57 ` [PATCH for-next 8/9] RDMA/hns: Remove unused struct members in hns-abi.h Wei Hu (Xavier)
2017-09-28 9:02 ` Leon Romanovsky
2017-09-28 11:56 ` Wei Hu (Xavier)
2017-09-28 13:04 ` Leon Romanovsky
2017-09-28 16:12 ` Wei Hu (Xavier)
2017-09-28 4:57 ` Wei Hu (Xavier) [this message]
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