netdev - [PATCH net-next] nfp: take numa node into account when setting irq affinity

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Date:   Wed,  9 Nov 2022 15:04:42 -0500
From:   Simon Horman <simon.horman@...igine.com>
To:     David Miller <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>
Cc:     netdev@...r.kernel.org, oss-drivers@...igine.com,
        Yinjun Zhang <yinjun.zhang@...igine.com>,
        Louis Peens <louis.peens@...igine.com>,
        Niklas Söderlund <niklas.soderlund@...igine.com>,
        Simon Horman <simon.horman@...igine.com>
Subject: [PATCH net-next] nfp: take numa node into account when setting irq affinity

From: Yinjun Zhang <yinjun.zhang@...igine.com>

Set irq affinity to cpus that belong to the same numa node with
NIC device first.

Signed-off-by: Yinjun Zhang <yinjun.zhang@...igine.com>
Reviewed-by: Louis Peens <louis.peens@...igine.com>
Reviewed-by: Niklas Söderlund <niklas.soderlund@...igine.com>
Signed-off-by: Simon Horman <simon.horman@...igine.com>
---
 drivers/net/ethernet/netronome/nfp/nfp_net_common.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/net/ethernet/netronome/nfp/nfp_net_common.c b/drivers/net/ethernet/netronome/nfp/nfp_net_common.c
index 8c1a870bc0e5..184ffae2ac94 100644
--- a/drivers/net/ethernet/netronome/nfp/nfp_net_common.c
+++ b/drivers/net/ethernet/netronome/nfp/nfp_net_common.c
@@ -735,8 +735,9 @@ static unsigned int nfp_net_calc_fl_bufsz_xsk(struct nfp_net_dp *dp)
  */
 static void nfp_net_vecs_init(struct nfp_net *nn)
 {
+	int numa_node = dev_to_node(&nn->pdev->dev);
 	struct nfp_net_r_vector *r_vec;
-	int r;
+	unsigned int r;
 
 	nn->lsc_handler = nfp_net_irq_lsc;
 	nn->exn_handler = nfp_net_irq_exn;
@@ -762,7 +763,7 @@ static void nfp_net_vecs_init(struct nfp_net *nn)
 			tasklet_disable(&r_vec->tasklet);
 		}
 
-		cpumask_set_cpu(r, &r_vec->affinity_mask);
+		cpumask_set_cpu(cpumask_local_spread(r, numa_node), &r_vec->affinity_mask);
 	}
 }
 
-- 
2.30.2