From fdd4044ffdc8313b91353af7879a39ef9c683bec Mon Sep 17 00:00:00 2001 From: Jakub Pawlak Date: Tue, 14 May 2019 10:37:05 -0700 Subject: iavf: Remove timer for work triggering, use delaying work instead Remove the watchdog timer, instead declare watchdog task as delayed work and use dedicated workqueue to service driver tasks. The dedicated driver workqueue iavf_wq is common for all driver instances. Signed-off-by: Jakub Pawlak Tested-by: Andrew Bowers Signed-off-by: Jeff Kirsher --- drivers/net/ethernet/intel/iavf/iavf.h | 4 +- drivers/net/ethernet/intel/iavf/iavf_ethtool.c | 4 +- drivers/net/ethernet/intel/iavf/iavf_main.c | 66 ++++++++++--------------- drivers/net/ethernet/intel/iavf/iavf_virtchnl.c | 2 +- 4 files changed, 31 insertions(+), 45 deletions(-) (limited to 'drivers/net/ethernet') diff --git a/drivers/net/ethernet/intel/iavf/iavf.h b/drivers/net/ethernet/intel/iavf/iavf.h index 657019418693..45dfb1a3bb40 100644 --- a/drivers/net/ethernet/intel/iavf/iavf.h +++ b/drivers/net/ethernet/intel/iavf/iavf.h @@ -216,7 +216,6 @@ struct iavf_cloud_filter { /* board specific private data structure */ struct iavf_adapter { - struct timer_list watchdog_timer; struct work_struct reset_task; struct work_struct adminq_task; struct delayed_work client_task; @@ -303,7 +302,7 @@ struct iavf_adapter { enum iavf_state_t state; unsigned long crit_section; - struct work_struct watchdog_task; + struct delayed_work watchdog_task; bool netdev_registered; bool link_up; enum virtchnl_link_speed link_speed; @@ -359,6 +358,7 @@ struct iavf_device { /* needed by iavf_ethtool.c */ extern char iavf_driver_name[]; extern const char iavf_driver_version[]; +extern struct workqueue_struct *iavf_wq; int iavf_up(struct iavf_adapter *adapter); void iavf_down(struct iavf_adapter *adapter); diff --git a/drivers/net/ethernet/intel/iavf/iavf_ethtool.c b/drivers/net/ethernet/intel/iavf/iavf_ethtool.c index 5bdcd78f216d..dad3eec8ccd8 100644 --- a/drivers/net/ethernet/intel/iavf/iavf_ethtool.c +++ b/drivers/net/ethernet/intel/iavf/iavf_ethtool.c @@ -510,7 +510,7 @@ static int iavf_set_priv_flags(struct net_device *netdev, u32 flags) if (changed_flags & IAVF_FLAG_LEGACY_RX) { if (netif_running(netdev)) { adapter->flags |= IAVF_FLAG_RESET_NEEDED; - schedule_work(&adapter->reset_task); + queue_work(iavf_wq, &adapter->reset_task); } } @@ -622,7 +622,7 @@ static int iavf_set_ringparam(struct net_device *netdev, if (netif_running(netdev)) { adapter->flags |= IAVF_FLAG_RESET_NEEDED; - schedule_work(&adapter->reset_task); + queue_work(iavf_wq, &adapter->reset_task); } return 0; diff --git a/drivers/net/ethernet/intel/iavf/iavf_main.c b/drivers/net/ethernet/intel/iavf/iavf_main.c index d5f452e4aca8..f9c0d50810bb 100644 --- a/drivers/net/ethernet/intel/iavf/iavf_main.c +++ b/drivers/net/ethernet/intel/iavf/iavf_main.c @@ -57,7 +57,7 @@ MODULE_DESCRIPTION("Intel(R) Ethernet Adaptive Virtual Function Network Driver") MODULE_LICENSE("GPL v2"); MODULE_VERSION(DRV_VERSION); -static struct workqueue_struct *iavf_wq; +struct workqueue_struct *iavf_wq; /** * iavf_allocate_dma_mem_d - OS specific memory alloc for shared code @@ -170,7 +170,7 @@ void iavf_schedule_reset(struct iavf_adapter *adapter) if (!(adapter->flags & (IAVF_FLAG_RESET_PENDING | IAVF_FLAG_RESET_NEEDED))) { adapter->flags |= IAVF_FLAG_RESET_NEEDED; - schedule_work(&adapter->reset_task); + queue_work(iavf_wq, &adapter->reset_task); } } @@ -289,7 +289,7 @@ static irqreturn_t iavf_msix_aq(int irq, void *data) rd32(hw, IAVF_VFINT_ICR0_ENA1); /* schedule work on the private workqueue */ - schedule_work(&adapter->adminq_task); + queue_work(iavf_wq, &adapter->adminq_task); return IRQ_HANDLED; } @@ -980,7 +980,7 @@ static void iavf_up_complete(struct iavf_adapter *adapter) adapter->aq_required |= IAVF_FLAG_AQ_ENABLE_QUEUES; if (CLIENT_ENABLED(adapter)) adapter->flags |= IAVF_FLAG_CLIENT_NEEDS_OPEN; - mod_timer_pending(&adapter->watchdog_timer, jiffies + 1); + mod_delayed_work(iavf_wq, &adapter->watchdog_task, 0); } /** @@ -1044,7 +1044,7 @@ void iavf_down(struct iavf_adapter *adapter) adapter->aq_required |= IAVF_FLAG_AQ_DISABLE_QUEUES; } - mod_timer_pending(&adapter->watchdog_timer, jiffies + 1); + mod_delayed_work(iavf_wq, &adapter->watchdog_task, 0); } /** @@ -1532,19 +1532,6 @@ err: return err; } -/** - * iavf_watchdog_timer - Periodic call-back timer - * @data: pointer to adapter disguised as unsigned long - **/ -static void iavf_watchdog_timer(struct timer_list *t) -{ - struct iavf_adapter *adapter = from_timer(adapter, t, - watchdog_timer); - - schedule_work(&adapter->watchdog_task); - /* timer will be rescheduled in watchdog task */ -} - /** * iavf_process_aq_command - process aq_required flags * and sends aq command @@ -1680,7 +1667,7 @@ static void iavf_watchdog_task(struct work_struct *work) { struct iavf_adapter *adapter = container_of(work, struct iavf_adapter, - watchdog_task); + watchdog_task.work); struct iavf_hw *hw = &adapter->hw; u32 reg_val; @@ -1696,7 +1683,7 @@ static void iavf_watchdog_task(struct work_struct *work) dev_err(&adapter->pdev->dev, "Hardware came out of reset. Attemptingreinit.\n"); adapter->state = __IAVF_STARTUP; adapter->flags &= ~IAVF_FLAG_PF_COMMS_FAILED; - schedule_delayed_work(&adapter->init_task, 10); + queue_delayed_work(iavf_wq, &adapter->init_task, 10); clear_bit(__IAVF_IN_CRITICAL_TASK, &adapter->crit_section); /* Don't reschedule the watchdog, since we've restarted @@ -1721,7 +1708,7 @@ static void iavf_watchdog_task(struct work_struct *work) adapter->state = __IAVF_RESETTING; adapter->flags |= IAVF_FLAG_RESET_PENDING; dev_err(&adapter->pdev->dev, "Hardware reset detected\n"); - schedule_work(&adapter->reset_task); + queue_work(iavf_wq, &adapter->reset_task); adapter->aq_required = 0; adapter->current_op = VIRTCHNL_OP_UNKNOWN; goto watchdog_done; @@ -1753,11 +1740,11 @@ restart_watchdog: if (adapter->state == __IAVF_REMOVE) return; if (adapter->aq_required) - mod_timer(&adapter->watchdog_timer, - jiffies + msecs_to_jiffies(20)); + queue_delayed_work(iavf_wq, &adapter->watchdog_task, + msecs_to_jiffies(20)); else - mod_timer(&adapter->watchdog_timer, jiffies + (HZ * 2)); - schedule_work(&adapter->adminq_task); + queue_delayed_work(iavf_wq, &adapter->watchdog_task, HZ * 2); + queue_work(iavf_wq, &adapter->adminq_task); } static void iavf_disable_vf(struct iavf_adapter *adapter) @@ -1981,7 +1968,7 @@ continue_reset: adapter->aq_required |= IAVF_FLAG_AQ_ADD_CLOUD_FILTER; iavf_misc_irq_enable(adapter); - mod_timer(&adapter->watchdog_timer, jiffies + 2); + mod_delayed_work(iavf_wq, &adapter->watchdog_task, 2); /* We were running when the reset started, so we need to restore some * state here. @@ -2922,7 +2909,7 @@ static int iavf_setup_tc(struct net_device *netdev, enum tc_setup_type type, * The open entry point is called when a network interface is made * active by the system (IFF_UP). At this point all resources needed * for transmit and receive operations are allocated, the interrupt - * handler is registered with the OS, the watchdog timer is started, + * handler is registered with the OS, the watchdog is started, * and the stack is notified that the interface is ready. **/ static int iavf_open(struct net_device *netdev) @@ -3057,7 +3044,7 @@ static int iavf_change_mtu(struct net_device *netdev, int new_mtu) adapter->flags |= IAVF_FLAG_SERVICE_CLIENT_REQUESTED; } adapter->flags |= IAVF_FLAG_RESET_NEEDED; - schedule_work(&adapter->reset_task); + queue_work(iavf_wq, &adapter->reset_task); return 0; } @@ -3492,8 +3479,7 @@ static void iavf_init_task(struct work_struct *work) ether_addr_copy(netdev->perm_addr, adapter->hw.mac.addr); } - timer_setup(&adapter->watchdog_timer, iavf_watchdog_timer, 0); - mod_timer(&adapter->watchdog_timer, jiffies + 1); + queue_delayed_work(iavf_wq, &adapter->watchdog_task, 1); adapter->tx_desc_count = IAVF_DEFAULT_TXD; adapter->rx_desc_count = IAVF_DEFAULT_RXD; @@ -3544,13 +3530,14 @@ static void iavf_init_task(struct work_struct *work) if (RSS_AQ(adapter)) { adapter->aq_required |= IAVF_FLAG_AQ_CONFIGURE_RSS; - mod_timer_pending(&adapter->watchdog_timer, jiffies + 1); + mod_delayed_work(iavf_wq, &adapter->watchdog_task, 1); } else { iavf_init_rss(adapter); } return; restart: - schedule_delayed_work(&adapter->init_task, msecs_to_jiffies(30)); + queue_delayed_work(iavf_wq, &adapter->init_task, + msecs_to_jiffies(30)); return; err_mem: iavf_free_rss(adapter); @@ -3568,10 +3555,10 @@ err: adapter->flags |= IAVF_FLAG_PF_COMMS_FAILED; iavf_shutdown_adminq(hw); adapter->state = __IAVF_STARTUP; - schedule_delayed_work(&adapter->init_task, HZ * 5); + queue_delayed_work(iavf_wq, &adapter->init_task, HZ * 5); return; } - schedule_delayed_work(&adapter->init_task, HZ); + queue_delayed_work(iavf_wq, &adapter->init_task, HZ); } /** @@ -3696,11 +3683,11 @@ static int iavf_probe(struct pci_dev *pdev, const struct pci_device_id *ent) INIT_WORK(&adapter->reset_task, iavf_reset_task); INIT_WORK(&adapter->adminq_task, iavf_adminq_task); - INIT_WORK(&adapter->watchdog_task, iavf_watchdog_task); + INIT_DELAYED_WORK(&adapter->watchdog_task, iavf_watchdog_task); INIT_DELAYED_WORK(&adapter->client_task, iavf_client_task); INIT_DELAYED_WORK(&adapter->init_task, iavf_init_task); - schedule_delayed_work(&adapter->init_task, - msecs_to_jiffies(5 * (pdev->devfn & 0x07))); + queue_delayed_work(iavf_wq, &adapter->init_task, + msecs_to_jiffies(5 * (pdev->devfn & 0x07))); /* Setup the wait queue for indicating transition to down status */ init_waitqueue_head(&adapter->down_waitqueue); @@ -3796,7 +3783,7 @@ static int iavf_resume(struct pci_dev *pdev) return err; } - schedule_work(&adapter->reset_task); + queue_work(iavf_wq, &adapter->reset_task); netif_device_attach(netdev); @@ -3856,8 +3843,7 @@ static void iavf_remove(struct pci_dev *pdev) iavf_reset_interrupt_capability(adapter); iavf_free_q_vectors(adapter); - if (adapter->watchdog_timer.function) - del_timer_sync(&adapter->watchdog_timer); + cancel_delayed_work_sync(&adapter->watchdog_task); cancel_work_sync(&adapter->adminq_task); diff --git a/drivers/net/ethernet/intel/iavf/iavf_virtchnl.c b/drivers/net/ethernet/intel/iavf/iavf_virtchnl.c index dd97509e2da1..cb7c56c5afe6 100644 --- a/drivers/net/ethernet/intel/iavf/iavf_virtchnl.c +++ b/drivers/net/ethernet/intel/iavf/iavf_virtchnl.c @@ -1238,7 +1238,7 @@ void iavf_virtchnl_completion(struct iavf_adapter *adapter, if (!(adapter->flags & IAVF_FLAG_RESET_PENDING)) { adapter->flags |= IAVF_FLAG_RESET_PENDING; dev_info(&adapter->pdev->dev, "Scheduling reset task\n"); - schedule_work(&adapter->reset_task); + queue_work(iavf_wq, &adapter->reset_task); } break; default: -- cgit v1.2.3-55-g7522