netdev - [PATCH v12 iwl-next 01/11] idpf: change the method for mailbox workqueue allocation

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Message-ID: <20250416122142.86176-4-milena.olech@intel.com>
Date: Wed, 16 Apr 2025 14:19:00 +0200
From: Milena Olech <milena.olech@...el.com>
To: intel-wired-lan@...ts.osuosl.org
Cc: netdev@...r.kernel.org,
	anthony.l.nguyen@...el.com,
	przemyslaw.kitszel@...el.com,
	Milena Olech <milena.olech@...el.com>,
	Alexander Lobakin <aleksander.lobakin@...el.com>,
	Jacob Keller <jacob.e.keller@...el.com>
Subject: [PATCH v12 iwl-next 01/11] idpf: change the method for mailbox workqueue allocation

Since workqueues are created per CPU, the works scheduled to this
workqueues are run on the CPU they were assigned. It may result in
overloaded CPU that is not able to handle virtchnl messages in
relatively short time. Allocating workqueue with WQ_UNBOUND and
WQ_HIGHPRI flags allows scheduler to queue virtchl messages on less loaded
CPUs, what eliminates delays.

Reviewed-by: Alexander Lobakin <aleksander.lobakin@...el.com>
Reviewed-by: Jacob Keller <jacob.e.keller@...el.com>
Signed-off-by: Milena Olech <milena.olech@...el.com>
---
 drivers/net/ethernet/intel/idpf/idpf_main.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/drivers/net/ethernet/intel/idpf/idpf_main.c b/drivers/net/ethernet/intel/idpf/idpf_main.c
index b35713036a54..ae7066b506e6 100644
--- a/drivers/net/ethernet/intel/idpf/idpf_main.c
+++ b/drivers/net/ethernet/intel/idpf/idpf_main.c
@@ -199,9 +199,8 @@ static int idpf_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
 		goto err_serv_wq_alloc;
 	}
 
-	adapter->mbx_wq = alloc_workqueue("%s-%s-mbx",
-					  WQ_UNBOUND | WQ_MEM_RECLAIM, 0,
-					  dev_driver_string(dev),
+	adapter->mbx_wq = alloc_workqueue("%s-%s-mbx", WQ_UNBOUND | WQ_HIGHPRI,
+					  0, dev_driver_string(dev),
 					  dev_name(dev));
 	if (!adapter->mbx_wq) {
 		dev_err(dev, "Failed to allocate mailbox workqueue\n");
-- 
2.43.5