linux-kernel - [PATCH AUTOSEL 6.8 37/68] ionic: set adminq irq affinity

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Date: Fri, 29 Mar 2024 08:25:33 -0400
From: Sasha Levin <sashal@...nel.org>
To: linux-kernel@...r.kernel.org,
	stable@...r.kernel.org
Cc: Shannon Nelson <shannon.nelson@....com>,
	Brett Creeley <brett.creeley@....com>,
	Jacob Keller <jacob.e.keller@...el.com>,
	"David S . Miller" <davem@...emloft.net>,
	Sasha Levin <sashal@...nel.org>,
	drivers@...sando.io,
	edumazet@...gle.com,
	kuba@...nel.org,
	pabeni@...hat.com,
	nitya.sunkad@....com,
	netdev@...r.kernel.org
Subject: [PATCH AUTOSEL 6.8 37/68] ionic: set adminq irq affinity

From: Shannon Nelson <shannon.nelson@....com>

[ Upstream commit c699f35d658f3c21b69ed24e64b2ea26381e941d ]

We claim to have the AdminQ on our irq0 and thus cpu id 0,
but we need to be sure we set the affinity hint to try to
keep it there.

Signed-off-by: Shannon Nelson <shannon.nelson@....com>
Reviewed-by: Brett Creeley <brett.creeley@....com>
Reviewed-by: Jacob Keller <jacob.e.keller@...el.com>
Signed-off-by: David S. Miller <davem@...emloft.net>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/net/ethernet/pensando/ionic/ionic_lif.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/pensando/ionic/ionic_lif.c b/drivers/net/ethernet/pensando/ionic/ionic_lif.c
index fcb44ceeb6aa5..44d30115ded13 100644
--- a/drivers/net/ethernet/pensando/ionic/ionic_lif.c
+++ b/drivers/net/ethernet/pensando/ionic/ionic_lif.c
@@ -3391,9 +3391,12 @@ static int ionic_lif_adminq_init(struct ionic_lif *lif)
 
 	napi_enable(&qcq->napi);
 
-	if (qcq->flags & IONIC_QCQ_F_INTR)
+	if (qcq->flags & IONIC_QCQ_F_INTR) {
+		irq_set_affinity_hint(qcq->intr.vector,
+				      &qcq->intr.affinity_mask);
 		ionic_intr_mask(idev->intr_ctrl, qcq->intr.index,
 				IONIC_INTR_MASK_CLEAR);
+	}
 
 	qcq->flags |= IONIC_QCQ_F_INITED;
 
-- 
2.43.0