From 59653e6497d16f7ac1d9db088f3959f57ee8c3db Mon Sep 17 00:00:00 2001 From: Detlev Casanova Date: Sat, 22 Jun 2019 23:14:37 -0400 Subject: [PATCH] e1000e: Make watchdog use delayed work Use delayed work instead of timers to run the watchdog of the e1000e driver. Simplify the code with one less middle function. Signed-off-by: Detlev Casanova Tested-by: Aaron Brown Signed-off-by: Jeff Kirsher --- drivers/net/ethernet/intel/e1000e/e1000.h | 5 +- drivers/net/ethernet/intel/e1000e/netdev.c | 54 ++++++++++++---------- 2 files changed, 32 insertions(+), 27 deletions(-) diff --git a/drivers/net/ethernet/intel/e1000e/e1000.h b/drivers/net/ethernet/intel/e1000e/e1000.h index be13227f1697..34cd67951aec 100644 --- a/drivers/net/ethernet/intel/e1000e/e1000.h +++ b/drivers/net/ethernet/intel/e1000e/e1000.h @@ -186,12 +186,13 @@ struct e1000_phy_regs { /* board specific private data structure */ struct e1000_adapter { - struct timer_list watchdog_timer; struct timer_list phy_info_timer; struct timer_list blink_timer; struct work_struct reset_task; - struct work_struct watchdog_task; + struct delayed_work watchdog_task; + + struct workqueue_struct *e1000_workqueue; const struct e1000_info *ei; diff --git a/drivers/net/ethernet/intel/e1000e/netdev.c b/drivers/net/ethernet/intel/e1000e/netdev.c index f6f73d5347db..b5fed6177ad6 100644 --- a/drivers/net/ethernet/intel/e1000e/netdev.c +++ b/drivers/net/ethernet/intel/e1000e/netdev.c @@ -1780,7 +1780,8 @@ static irqreturn_t e1000_intr_msi(int __always_unused irq, void *data) } /* guard against interrupt when we're going down */ if (!test_bit(__E1000_DOWN, &adapter->state)) - mod_timer(&adapter->watchdog_timer, jiffies + 1); + queue_delayed_work(adapter->e1000_workqueue, + &adapter->watchdog_task, 1); } /* Reset on uncorrectable ECC error */ @@ -1860,7 +1861,8 @@ static irqreturn_t e1000_intr(int __always_unused irq, void *data) } /* guard against interrupt when we're going down */ if (!test_bit(__E1000_DOWN, &adapter->state)) - mod_timer(&adapter->watchdog_timer, jiffies + 1); + queue_delayed_work(adapter->e1000_workqueue, + &adapter->watchdog_task, 1); } /* Reset on uncorrectable ECC error */ @@ -1905,7 +1907,8 @@ static irqreturn_t e1000_msix_other(int __always_unused irq, void *data) hw->mac.get_link_status = true; /* guard against interrupt when we're going down */ if (!test_bit(__E1000_DOWN, &adapter->state)) - mod_timer(&adapter->watchdog_timer, jiffies + 1); + queue_delayed_work(adapter->e1000_workqueue, + &adapter->watchdog_task, 1); } if (!test_bit(__E1000_DOWN, &adapter->state)) @@ -4278,7 +4281,6 @@ void e1000e_down(struct e1000_adapter *adapter, bool reset) napi_synchronize(&adapter->napi); - del_timer_sync(&adapter->watchdog_timer); del_timer_sync(&adapter->phy_info_timer); spin_lock(&adapter->stats64_lock); @@ -5150,25 +5152,11 @@ static void e1000e_check_82574_phy_workaround(struct e1000_adapter *adapter) } } -/** - * e1000_watchdog - Timer Call-back - * @data: pointer to adapter cast into an unsigned long - **/ -static void e1000_watchdog(struct timer_list *t) -{ - struct e1000_adapter *adapter = from_timer(adapter, t, watchdog_timer); - - /* Do the rest outside of interrupt context */ - schedule_work(&adapter->watchdog_task); - - /* TODO: make this use queue_delayed_work() */ -} - static void e1000_watchdog_task(struct work_struct *work) { struct e1000_adapter *adapter = container_of(work, struct e1000_adapter, - watchdog_task); + watchdog_task.work); struct net_device *netdev = adapter->netdev; struct e1000_mac_info *mac = &adapter->hw.mac; struct e1000_phy_info *phy = &adapter->hw.phy; @@ -5400,8 +5388,9 @@ link_up: /* Reset the timer */ if (!test_bit(__E1000_DOWN, &adapter->state)) - mod_timer(&adapter->watchdog_timer, - round_jiffies(jiffies + 2 * HZ)); + queue_delayed_work(adapter->e1000_workqueue, + &adapter->watchdog_task, + round_jiffies(2 * HZ)); } #define E1000_TX_FLAGS_CSUM 0x00000001 @@ -7256,11 +7245,21 @@ static int e1000_probe(struct pci_dev *pdev, const struct pci_device_id *ent) goto err_eeprom; } - timer_setup(&adapter->watchdog_timer, e1000_watchdog, 0); + adapter->e1000_workqueue = alloc_workqueue("%s", WQ_MEM_RECLAIM, 0, + e1000e_driver_name); + + if (!adapter->e1000_workqueue) { + err = -ENOMEM; + goto err_workqueue; + } + + INIT_DELAYED_WORK(&adapter->watchdog_task, e1000_watchdog_task); + queue_delayed_work(adapter->e1000_workqueue, &adapter->watchdog_task, + 0); + timer_setup(&adapter->phy_info_timer, e1000_update_phy_info, 0); INIT_WORK(&adapter->reset_task, e1000_reset_task); - INIT_WORK(&adapter->watchdog_task, e1000_watchdog_task); INIT_WORK(&adapter->downshift_task, e1000e_downshift_workaround); INIT_WORK(&adapter->update_phy_task, e1000e_update_phy_task); INIT_WORK(&adapter->print_hang_task, e1000_print_hw_hang); @@ -7354,6 +7353,9 @@ static int e1000_probe(struct pci_dev *pdev, const struct pci_device_id *ent) return 0; err_register: + flush_workqueue(adapter->e1000_workqueue); + destroy_workqueue(adapter->e1000_workqueue); +err_workqueue: if (!(adapter->flags & FLAG_HAS_AMT)) e1000e_release_hw_control(adapter); err_eeprom: @@ -7400,15 +7402,17 @@ static void e1000_remove(struct pci_dev *pdev) */ if (!down) set_bit(__E1000_DOWN, &adapter->state); - del_timer_sync(&adapter->watchdog_timer); del_timer_sync(&adapter->phy_info_timer); cancel_work_sync(&adapter->reset_task); - cancel_work_sync(&adapter->watchdog_task); cancel_work_sync(&adapter->downshift_task); cancel_work_sync(&adapter->update_phy_task); cancel_work_sync(&adapter->print_hang_task); + cancel_delayed_work(&adapter->watchdog_task); + flush_workqueue(adapter->e1000_workqueue); + destroy_workqueue(adapter->e1000_workqueue); + if (adapter->flags & FLAG_HAS_HW_TIMESTAMP) { cancel_work_sync(&adapter->tx_hwtstamp_work); if (adapter->tx_hwtstamp_skb) {