From 2803b16c10ea7eec170c485388f5f26ae30e92fe Mon Sep 17 00:00:00 2001 From: Jesse Brandeburg Date: Tue, 22 Dec 2015 14:25:08 -0800 Subject: [PATCH] i40e/i40evf: Use private workqueue As done per ixgbe, use a private workqueue to avoid blocking the system workqueue. This avoids some strange side effects when some other entity is depending on the system work queue. Change-ID: Ic8ba08f5b03696cf638b21afd25fbae7738d55ee Signed-off-by: Jesse Brandeburg Tested-by: Andrew Bowers Signed-off-by: Jeff Kirsher --- drivers/net/ethernet/intel/i40e/i40e_main.c | 15 ++++++++++++++- drivers/net/ethernet/intel/i40evf/i40evf_main.c | 10 +++++++++- 2 files changed, 23 insertions(+), 2 deletions(-) diff --git a/drivers/net/ethernet/intel/i40e/i40e_main.c b/drivers/net/ethernet/intel/i40e/i40e_main.c index bd81a97..3e482bc 100644 --- a/drivers/net/ethernet/intel/i40e/i40e_main.c +++ b/drivers/net/ethernet/intel/i40e/i40e_main.c @@ -112,6 +112,8 @@ MODULE_DESCRIPTION("Intel(R) Ethernet Connection XL710 Network Driver"); MODULE_LICENSE("GPL"); MODULE_VERSION(DRV_VERSION); +static struct workqueue_struct *i40e_wq; + /** * i40e_allocate_dma_mem_d - OS specific memory alloc for shared code * @hw: pointer to the HW structure @@ -297,7 +299,7 @@ static void i40e_service_event_schedule(struct i40e_pf *pf) if (!test_bit(__I40E_DOWN, &pf->state) && !test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state) && !test_and_set_bit(__I40E_SERVICE_SCHED, &pf->state)) - schedule_work(&pf->service_task); + queue_work(i40e_wq, &pf->service_task); } /** @@ -11470,6 +11472,16 @@ static int __init i40e_init_module(void) i40e_driver_string, i40e_driver_version_str); pr_info("%s: %s\n", i40e_driver_name, i40e_copyright); + /* we will see if single thread per module is enough for now, + * it can't be any worse than using the system workqueue which + * was already single threaded + */ + i40e_wq = create_singlethread_workqueue(i40e_driver_name); + if (!i40e_wq) { + pr_err("%s: Failed to create workqueue\n", i40e_driver_name); + return -ENOMEM; + } + i40e_dbg_init(); return pci_register_driver(&i40e_driver); } @@ -11484,6 +11496,7 @@ module_init(i40e_init_module); static void __exit i40e_exit_module(void) { pci_unregister_driver(&i40e_driver); + destroy_workqueue(i40e_wq); i40e_dbg_exit(); } module_exit(i40e_exit_module); diff --git a/drivers/net/ethernet/intel/i40evf/i40evf_main.c b/drivers/net/ethernet/intel/i40evf/i40evf_main.c index 615ad0f..66964eb 100644 --- a/drivers/net/ethernet/intel/i40evf/i40evf_main.c +++ b/drivers/net/ethernet/intel/i40evf/i40evf_main.c @@ -69,6 +69,8 @@ MODULE_DESCRIPTION("Intel(R) XL710 X710 Virtual Function Network Driver"); MODULE_LICENSE("GPL"); MODULE_VERSION(DRV_VERSION); +static struct workqueue_struct *i40evf_wq; + /** * i40evf_allocate_dma_mem_d - OS specific memory alloc for shared code * @hw: pointer to the HW structure @@ -182,7 +184,7 @@ static void i40evf_tx_timeout(struct net_device *netdev) if (!(adapter->flags & (I40EVF_FLAG_RESET_PENDING | I40EVF_FLAG_RESET_NEEDED))) { adapter->flags |= I40EVF_FLAG_RESET_NEEDED; - schedule_work(&adapter->reset_task); + queue_work(i40evf_wq, &adapter->reset_task); } } @@ -2895,6 +2897,11 @@ static int __init i40evf_init_module(void) pr_info("%s\n", i40evf_copyright); + i40evf_wq = create_singlethread_workqueue(i40evf_driver_name); + if (!i40evf_wq) { + pr_err("%s: Failed to create workqueue\n", i40evf_driver_name); + return -ENOMEM; + } ret = pci_register_driver(&i40evf_driver); return ret; } @@ -2910,6 +2917,7 @@ module_init(i40evf_init_module); static void __exit i40evf_exit_module(void) { pci_unregister_driver(&i40evf_driver); + destroy_workqueue(i40evf_wq); } module_exit(i40evf_exit_module); -- 2.7.4