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Message-ID: <20250508061439.8900-1-jagadeesharm14@gmail.com>
Date: Thu, 8 May 2025 06:14:25 +0000
From: Jagadeesh Yalapalli <jagadeesharm14@...il.com>
To: Tony Nguyen <anthony.l.nguyen@...el.com>,
Przemek Kitszel <przemyslaw.kitszel@...el.com>
Cc: Andrew Lunn <andrew+netdev@...n.ch>,
"David S . Miller" <davem@...emloft.net>,
Eric Dumazet <edumazet@...gle.com>,
Jakub Kicinski <kuba@...nel.org>,
Paolo Abeni <pabeni@...hat.com>,
intel-wired-lan@...ts.osuosl.org,
netdev@...r.kernel.org,
linux-kernel@...r.kernel.org,
Jagadeesh <jagadeesh.yalapalli@...fochips.com>
Subject: [PATCH v1] e1000e: Replace schedule_work with delayed workqueue for watchdog.
From: Jagadeesh <jagadeesh.yalapalli@...fochips.com>
Replace direct schedule_work() usage with queue_delayed_work() to allow
better timing control for the watchdog task. This resolves potential
race conditions during interface reset operations.
- Added watchdog_wq workqueue_struct and watchdog_dq delayed_work
- Updated e1000_watchdog() to use queue_delayed_work()
- Removed obsolete TODO comment about delayed workqueue
Tested in Qemu :
/ # for i in {1..1000}; do
> echo 1 > /sys/class/net/eth0/device/reset
> sleep 0.1
> done
[ 726.357499] e1000e 0000:00:02.0: resetting
[ 726.390737] e1000e 0000:00:02.0: reset done
Signed-off-by: Jagadeesh <jagadeesh.yalapalli@...fochips.com>
---
drivers/net/ethernet/intel/e1000e/e1000.h | 2 ++
drivers/net/ethernet/intel/e1000e/netdev.c | 3 +--
2 files changed, 3 insertions(+), 2 deletions(-)
diff --git a/drivers/net/ethernet/intel/e1000e/e1000.h b/drivers/net/ethernet/intel/e1000e/e1000.h
index ba9c19e6994c..1e7b365c4f31 100644
--- a/drivers/net/ethernet/intel/e1000e/e1000.h
+++ b/drivers/net/ethernet/intel/e1000e/e1000.h
@@ -194,6 +194,8 @@ struct e1000_adapter {
struct timer_list blink_timer;
struct work_struct reset_task;
+ struct workqueue_struct *watchdog_wq;
+ struct delayed_work watchdog_dq;
struct work_struct watchdog_task;
const struct e1000_info *ei;
diff --git a/drivers/net/ethernet/intel/e1000e/netdev.c b/drivers/net/ethernet/intel/e1000e/netdev.c
index 8ebcb6a7d608..87a915d09f4e 100644
--- a/drivers/net/ethernet/intel/e1000e/netdev.c
+++ b/drivers/net/ethernet/intel/e1000e/netdev.c
@@ -5178,9 +5178,8 @@ 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);
+ queue_delayed_work(adapter->watchdog_wq, &adapter->watchdog_dq, 0);
- /* TODO: make this use queue_delayed_work() */
}
static void e1000_watchdog_task(struct work_struct *work)
--
2.43.0
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