Commit 197d2370 authored Dec 10, 2020 by Thomas Gleixner

net/mlx4: Use effective interrupt affinity



Using the interrupt affinity mask for checking locality is not really
working well on architectures which support effective affinity masks.

The affinity mask is either the system wide default or set by user space,
but the architecture can or even must reduce the mask to the effective set,
which means that checking the affinity mask itself does not really tell
about the actual target CPUs.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Tariq Toukan <tariqt@nvidia.com>
Link: https://lore.kernel.org/r/20201210194044.672935978@linutronix.de

parent 80a62dee

drivers/net/ethernet/mellanox/mlx4/en_cq.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -117,7 +117,7 @@ int mlx4_en_activate_cq(struct mlx4_en_priv priv, struct mlx4_en_cq cq,
		assigned_eq = true;
		}
		irq = mlx4_eq_get_irq(mdev->dev, cq->vector);
		cq->aff_mask = irq_get_affinity_mask(irq);
		cq->aff_mask = irq_get_effective_affinity_mask(irq);
		} else {
		/* For TX we use the same irq per
		ring we assigned for the RX */

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