linux-kernel - [RFC net-next 3/6] gve: Use napi_affinity_no

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Message-Id: <20240812145633.52911-4-jdamato@fastly.com>
Date: Mon, 12 Aug 2024 14:56:24 +0000
From: Joe Damato <jdamato@...tly.com>
To: netdev@...r.kernel.org
Cc: Joe Damato <jdamato@...tly.com>,
	Jeroen de Borst <jeroendb@...gle.com>,
	Praveen Kaligineedi <pkaligineedi@...gle.com>,
	Shailend Chand <shailend@...gle.com>,
	"David S. Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>,
	Paolo Abeni <pabeni@...hat.com>,
	Willem de Bruijn <willemb@...gle.com>,
	Harshitha Ramamurthy <hramamurthy@...gle.com>,
	Ziwei Xiao <ziweixiao@...gle.com>,
	linux-kernel@...r.kernel.org (open list)
Subject: [RFC net-next 3/6] gve: Use napi_affinity_no_change

Use napi_affinity_no_change instead of gve's internal implementation,
simplifying and centralizing the logic.

Signed-off-by: Joe Damato <jdamato@...tly.com>
---
 drivers/net/ethernet/google/gve/gve_main.c | 14 +-------------
 1 file changed, 1 insertion(+), 13 deletions(-)

diff --git a/drivers/net/ethernet/google/gve/gve_main.c b/drivers/net/ethernet/google/gve/gve_main.c
index 661566db68c8..ad5e85b8c6a5 100644
--- a/drivers/net/ethernet/google/gve/gve_main.c
+++ b/drivers/net/ethernet/google/gve/gve_main.c
@@ -298,18 +298,6 @@ static irqreturn_t gve_intr_dqo(int irq, void *arg)
 	return IRQ_HANDLED;
 }
 
-static int gve_is_napi_on_home_cpu(struct gve_priv *priv, u32 irq)
-{
-	int cpu_curr = smp_processor_id();
-	const struct cpumask *aff_mask;
-
-	aff_mask = irq_get_effective_affinity_mask(irq);
-	if (unlikely(!aff_mask))
-		return 1;
-
-	return cpumask_test_cpu(cpu_curr, aff_mask);
-}
-
 int gve_napi_poll(struct napi_struct *napi, int budget)
 {
 	struct gve_notify_block *block;
@@ -383,7 +371,7 @@ int gve_napi_poll_dqo(struct napi_struct *napi, int budget)
 		/* Reschedule by returning budget only if already on the correct
 		 * cpu.
 		 */
-		if (likely(gve_is_napi_on_home_cpu(priv, block->irq)))
+		if (likely(napi_affinity_no_change(block->irq)))
 			return budget;
 
 		/* If not on the cpu with which this queue's irq has affinity
-- 
2.25.1