linux-kernel - [PATCH 5/5] SHOWCASE: net/mlx5e: Leverage for_each_numa_hop

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Message-Id: <20220816180727.387807-6-vschneid@redhat.com>
Date:   Tue, 16 Aug 2022 19:07:27 +0100
From:   Valentin Schneider <vschneid@...hat.com>
To:     netdev@...r.kernel.org, linux-rdma@...r.kernel.org,
        linux-kernel@...r.kernel.org
Cc:     Saeed Mahameed <saeedm@...dia.com>,
        Leon Romanovsky <leon@...nel.org>,
        "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>,
        Yury Norov <yury.norov@...il.com>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Rasmus Villemoes <linux@...musvillemoes.dk>,
        Ingo Molnar <mingo@...nel.org>,
        Peter Zijlstra <peterz@...radead.org>,
        Vincent Guittot <vincent.guittot@...aro.org>,
        Dietmar Eggemann <dietmar.eggemann@....com>,
        Steven Rostedt <rostedt@...dmis.org>,
        Mel Gorman <mgorman@...e.de>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Barry Song <song.bao.hua@...ilicon.com>,
        Heiko Carstens <hca@...ux.ibm.com>,
        Tony Luck <tony.luck@...el.com>,
        Jonathan Cameron <Jonathan.Cameron@...wei.com>,
        Gal Pressman <gal@...dia.com>, Tariq Toukan <tariqt@...dia.com>
Subject: [PATCH 5/5] SHOWCASE: net/mlx5e: Leverage for_each_numa_hop_cpu()

Not-signed-off-by: Valentin Schneider <vschneid@...hat.com>
---
 drivers/net/ethernet/mellanox/mlx5/core/eq.c | 12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/eq.c b/drivers/net/ethernet/mellanox/mlx5/core/eq.c
index 229728c80233..0a5432903edd 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/eq.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/eq.c
@@ -812,6 +812,7 @@ static int comp_irqs_request(struct mlx5_core_dev *dev)
 	int ncomp_eqs = table->num_comp_eqs;
 	u16 *cpus;
 	int ret;
+	int cpu;
 	int i;
 
 	ncomp_eqs = table->num_comp_eqs;
@@ -830,8 +831,15 @@ static int comp_irqs_request(struct mlx5_core_dev *dev)
 		ret = -ENOMEM;
 		goto free_irqs;
 	}
-	for (i = 0; i < ncomp_eqs; i++)
-		cpus[i] = cpumask_local_spread(i, dev->priv.numa_node);
+
+	rcu_read_lock();
+	for_each_numa_hop_cpus(cpu, dev->priv.numa_node) {
+		cpus[i] = cpu;
+		if (++i == ncomp_eqs)
+			goto spread_done;
+	}
+spread_done:
+	rcu_read_unlock();
 	ret = mlx5_irqs_request_vectors(dev, cpus, ncomp_eqs, table->comp_irqs);
 	kfree(cpus);
 	if (ret < 0)
-- 
2.31.1