netdev - [PATCH net-next v2 5/8] bnxt: use napi's irq affinity

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Message-ID: <20241218165843.744647-6-ahmed.zaki@intel.com>
Date: Wed, 18 Dec 2024 09:58:40 -0700
From: Ahmed Zaki <ahmed.zaki@...el.com>
To: netdev@...r.kernel.org
Cc: intel-wired-lan@...ts.osuosl.org,
	andrew+netdev@...n.ch,
	edumazet@...gle.com,
	kuba@...nel.org,
	pabeni@...hat.com,
	davem@...emloft.net,
	michael.chan@...adcom.com,
	tariqt@...dia.com,
	anthony.l.nguyen@...el.com,
	przemyslaw.kitszel@...el.com,
	jdamato@...tly.com,
	shayd@...dia.com,
	akpm@...ux-foundation.org,
	Ahmed Zaki <ahmed.zaki@...el.com>
Subject: [PATCH net-next v2 5/8] bnxt: use napi's irq affinity

Delete the driver CPU affinity info and use the core's napi config
instead.

Signed-off-by: Ahmed Zaki <ahmed.zaki@...el.com>
---
 drivers/net/ethernet/broadcom/bnxt/bnxt.c | 28 ++++-------------------
 drivers/net/ethernet/broadcom/bnxt/bnxt.h |  2 --
 2 files changed, 4 insertions(+), 26 deletions(-)

diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.c b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
index ac729a25ba52..f68f07686105 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
@@ -11177,14 +11177,8 @@ static void bnxt_free_irq(struct bnxt *bp)
 		int map_idx = bnxt_cp_num_to_irq_num(bp, i);
 
 		irq = &bp->irq_tbl[map_idx];
-		if (irq->requested) {
-			if (irq->have_cpumask) {
-				irq_update_affinity_hint(irq->vector, NULL);
-				free_cpumask_var(irq->cpu_mask);
-				irq->have_cpumask = 0;
-			}
+		if (irq->requested)
 			free_irq(irq->vector, bp->bnapi[i]);
-		}
 
 		irq->requested = 0;
 	}
@@ -11213,26 +11207,12 @@ static int bnxt_request_irq(struct bnxt *bp)
 
 #ifdef CONFIG_RFS_ACCEL
 		netif_napi_set_irq(&bp->bnapi[i]->napi, irq->vector,
-				   NAPIF_IRQ_ARFS_RMAP);
+				   NAPIF_IRQ_AFFINITY | NAPIF_IRQ_ARFS_RMAP);
 #else
-		netif_napi_set_irq(&bp->bnapi[i]->napi, irq->vector, 0);
+		netif_napi_set_irq(&bp->bnapi[i]->napi, irq->vector,
+				   NAPIF_IRQ_AFFINITY);
 #endif
 		irq->requested = 1;
-
-		if (zalloc_cpumask_var(&irq->cpu_mask, GFP_KERNEL)) {
-			int numa_node = dev_to_node(&bp->pdev->dev);
-
-			irq->have_cpumask = 1;
-			cpumask_set_cpu(cpumask_local_spread(i, numa_node),
-					irq->cpu_mask);
-			rc = irq_update_affinity_hint(irq->vector, irq->cpu_mask);
-			if (rc) {
-				netdev_warn(bp->dev,
-					    "Update affinity hint failed, IRQ = %d\n",
-					    irq->vector);
-				break;
-			}
-		}
 	}
 	return rc;
 }
diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.h b/drivers/net/ethernet/broadcom/bnxt/bnxt.h
index 7df7a2233307..8a97c1fb2083 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt.h
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.h
@@ -1228,9 +1228,7 @@ struct bnxt_irq {
 	irq_handler_t	handler;
 	unsigned int	vector;
 	u8		requested:1;
-	u8		have_cpumask:1;
 	char		name[IFNAMSIZ + BNXT_IRQ_NAME_EXTRA];
-	cpumask_var_t	cpu_mask;
 };
 
 #define HWRM_RING_ALLOC_TX	0x1
-- 
2.43.0