From 40a13e2493c9882cb4d09054d81a5063cd1589a2 Mon Sep 17 00:00:00 2001 From: Mark Rustad Date: Wed, 21 Oct 2015 17:21:15 -0700 Subject: [PATCH] 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: Mark Rustad Tested-by: Darin Miller Signed-off-by: Jeff Kirsher --- drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c | 15 +++++++++++++-- 1 file changed, 13 insertions(+), 2 deletions(-) diff --git a/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c b/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c index dbbd1be47462..18f1c2232cad 100644 --- a/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c +++ b/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c @@ -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 -- 2.20.1