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ixgbe: Use private workqueue to avoid certain possible hangs

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Use a private workqueue to avoid hangs that were otherwise possible
when performing stress tests, such as creating and destroying many
VFS repeatedly.

Signed-off-by: Mark Rustad <mark.d.rustad@intel.com>
Tested-by: Darin Miller <darin.j.miller@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
This commit is contained in:
Mark Rustad 2015-10-21 17:21:10 -07:00 committed by Jeff Kirsher
parent 83a9fb20ec
commit 780484d853
1 changed files with 13 additions and 1 deletions
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14
drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
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@ -172,6 +172,8 @@ MODULE_DESCRIPTION("Intel(R) 10 Gigabit PCI Express Network Driver");
MODULE_LICENSE("GPL");
MODULE_VERSION(DRV_VERSION);
static struct workqueue_struct *ixgbe_wq;
static bool ixgbe_check_cfg_remove(struct ixgbe_hw *hw, struct pci_dev *pdev);
static int ixgbe_read_pci_cfg_word_parent(struct ixgbe_adapter *adapter,
@ -313,7 +315,7 @@ static void ixgbe_service_event_schedule(struct ixgbe_adapter *adapter)
if (!test_bit(__IXGBE_DOWN, &adapter->state) &&
!test_bit(__IXGBE_REMOVING, &adapter->state) &&
!test_and_set_bit(__IXGBE_SERVICE_SCHED, &adapter->state))
schedule_work(&adapter->service_task);
queue_work(ixgbe_wq, &adapter->service_task);
}
static void ixgbe_remove_adapter(struct ixgbe_hw *hw)
@ -9320,6 +9322,12 @@ static int __init ixgbe_init_module(void)
pr_info("%s - version %s\n", ixgbe_driver_string, ixgbe_driver_version);
pr_info("%s\n", ixgbe_copyright);
ixgbe_wq = create_singlethread_workqueue(ixgbe_driver_name);
if (!ixgbe_wq) {
pr_err("%s: Failed to create workqueue\n", ixgbe_driver_name);
return -ENOMEM;
}
ixgbe_dbg_init();
ret = pci_register_driver(&ixgbe_driver);
@ -9351,6 +9359,10 @@ static void __exit ixgbe_exit_module(void)
pci_unregister_driver(&ixgbe_driver);
ixgbe_dbg_exit();
if (ixgbe_wq) {
destroy_workqueue(ixgbe_wq);
ixgbe_wq = NULL;
}
}
#ifdef CONFIG_IXGBE_DCA