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ibmvnic: queue reset work in system_long_wq

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The reset process for ibmvnic commonly takes multiple seconds, clearly
making it inappropriate for schedule_work/system_wq. The reason to make
this change is that ibmvnic's use of the default system-wide workqueue
for a relatively long-running work item can negatively affect other
workqueue users. So, queue the relatively slow reset job to the
system_long_wq.

Suggested-by: Nathan Lynch <nathanl@linux.ibm.com>
Signed-off-by: Lijun Pan <lijunp213@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Lijun Pan 2021-04-13 14:33:39 -05:00 committed by David S. Miller
parent 9fb434bcf8
commit 870e04ae45
1 changed files with 4 additions and 3 deletions
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7
drivers/net/ethernet/ibm/ibmvnic.c
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@ -2292,8 +2292,9 @@ static void __ibmvnic_reset(struct work_struct *work)
adapter = container_of(work, struct ibmvnic_adapter, ibmvnic_reset);
if (test_and_set_bit_lock(0, &adapter->resetting)) {
schedule_delayed_work(&adapter->ibmvnic_delayed_reset,
IBMVNIC_RESET_DELAY);
queue_delayed_work(system_long_wq,
&adapter->ibmvnic_delayed_reset,
IBMVNIC_RESET_DELAY);
return;
}
@ -2437,7 +2438,7 @@ static int ibmvnic_reset(struct ibmvnic_adapter *adapter,
list_add_tail(&rwi->list, &adapter->rwi_list);
netdev_dbg(adapter->netdev, "Scheduling reset (reason %s)\n",
reset_reason_to_string(reason));
schedule_work(&adapter->ibmvnic_reset);
queue_work(system_long_wq, &adapter->ibmvnic_reset);
ret = 0;
err: