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Commit 40a13e24 authored by Mark Rustad's avatar Mark Rustad Committed by Jeff Kirsher
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ixgbevf: Use a private workqueue to avoid certain possible hangs 



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: default avatarMark Rustad <mark.d.rustad@intel.com>
Tested-by: default avatarDarin Miller <darin.j.miller@intel.com>
Signed-off-by: default avatarJeff Kirsher <jeffrey.t.kirsher@intel.com>
parent 780484d8

drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c

+13 −2
Original line number Diff line number Diff line
@@ -59,7 +59,7 @@ static const char ixgbevf_driver_string[] = 
#define DRV_VERSION "2.12.1-k"

const char ixgbevf_driver_version[] = DRV_VERSION;

static char ixgbevf_copyright[] =

	"Copyright (c) 2009 - 2012 Intel Corporation.";

	"Copyright (c) 2009 - 2015 Intel Corporation.";



static const struct ixgbevf_info *ixgbevf_info_tbl[] = {

	[board_82599_vf] = &ixgbevf_82599_vf_info,
@@ -96,12 +96,14 @@ static int debug = -1; 
module_param(debug, int, 0);

MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all)");



static struct workqueue_struct *ixgbevf_wq;



static void ixgbevf_service_event_schedule(struct ixgbevf_adapter *adapter)

{

	if (!test_bit(__IXGBEVF_DOWN, &adapter->state) &&

	    !test_bit(__IXGBEVF_REMOVING, &adapter->state) &&

	    !test_and_set_bit(__IXGBEVF_SERVICE_SCHED, &adapter->state))

		schedule_work(&adapter->service_task);

		queue_work(ixgbevf_wq, &adapter->service_task);

}



static void ixgbevf_service_event_complete(struct ixgbevf_adapter *adapter)
@@ -4250,6 +4252,11 @@ static int __init ixgbevf_init_module(void) 
		ixgbevf_driver_version);



	pr_info("%s\n", ixgbevf_copyright);

	ixgbevf_wq = create_singlethread_workqueue(ixgbevf_driver_name);

	if (!ixgbevf_wq) {

		pr_err("%s: Failed to create workqueue\n", ixgbevf_driver_name);

		return -ENOMEM;

	}



	ret = pci_register_driver(&ixgbevf_driver);

	return ret;
@@ -4266,6 +4273,10 @@ module_init(ixgbevf_init_module); 
static void __exit ixgbevf_exit_module(void)

{

	pci_unregister_driver(&ixgbevf_driver);

	if (ixgbevf_wq) {

		destroy_workqueue(ixgbevf_wq);

		ixgbevf_wq = NULL;

	}

}



#ifdef DEBUG