netdev - [PATCH net-next 1/4] net/mlx5: Apply rate-limiting to high temperature warning

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Message-ID: <20250213094641.226501-2-tariqt@nvidia.com>
Date: Thu, 13 Feb 2025 11:46:38 +0200
From: Tariq Toukan <tariqt@...dia.com>
To: "David S. Miller" <davem@...emloft.net>, Jakub Kicinski <kuba@...nel.org>,
	Paolo Abeni <pabeni@...hat.com>, Eric Dumazet <edumazet@...gle.com>, "Andrew
 Lunn" <andrew+netdev@...n.ch>
CC: Shahar Shitrit <shshitrit@...dia.com>, Gal Pressman <gal@...dia.com>,
	Saeed Mahameed <saeedm@...dia.com>, Leon Romanovsky <leon@...nel.org>, "Tariq
 Toukan" <tariqt@...dia.com>, <netdev@...r.kernel.org>,
	<linux-rdma@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: [PATCH net-next 1/4] net/mlx5: Apply rate-limiting to high temperature warning

From: Shahar Shitrit <shshitrit@...dia.com>

Wrap the high temperature warning in a temperature event with
a call to net_ratelimit() to prevent flooding the kernel log
with repeated warning messages when temperature exceeds the
threshold multiple times within a short duration.

Signed-off-by: Shahar Shitrit <shshitrit@...dia.com>
Signed-off-by: Tariq Toukan <tariqt@...dia.com>
---
 drivers/net/ethernet/mellanox/mlx5/core/events.c | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/events.c b/drivers/net/ethernet/mellanox/mlx5/core/events.c
index d91ea53eb394..e8beb6289d01 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/events.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/events.c
@@ -165,9 +165,10 @@ static int temp_warn(struct notifier_block *nb, unsigned long type, void *data)
 	value_lsb = be64_to_cpu(eqe->data.temp_warning.sensor_warning_lsb);
 	value_msb = be64_to_cpu(eqe->data.temp_warning.sensor_warning_msb);
 
-	mlx5_core_warn(events->dev,
-		       "High temperature on sensors with bit set %llx %llx",
-		       value_msb, value_lsb);
+	if (net_ratelimit())
+		mlx5_core_warn(events->dev,
+			       "High temperature on sensors with bit set %llx %llx",
+			       value_msb, value_lsb);
 
 	return NOTIFY_OK;
 }
-- 
2.45.0