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net/mlx5: 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: Saeed Mahameed <saeedm@nvidia.com>
Link: https://lore.kernel.org/r/20201210194044.876342330@linutronix.de
This commit is contained in:
Thomas Gleixner 2020-12-10 20:25:59 +01:00
parent 6e745db4dd
commit ec7b37b6f0
1 changed files with 1 additions and 1 deletions
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2
drivers/net/ethernet/mellanox/mlx5/core/en_main.c
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@ -1998,7 +1998,7 @@ static int mlx5e_open_channel(struct mlx5e_priv *priv, int ix,
c->num_tc = params->num_tc;
c->xdp = !!params->xdp_prog;
c->stats = &priv->channel_stats[ix].ch;
c->aff_mask = irq_get_affinity_mask(irq);
c->aff_mask = irq_get_effective_affinity_mask(irq);
c->lag_port = mlx5e_enumerate_lag_port(priv->mdev, ix);
netif_napi_add(netdev, &c->napi, mlx5e_napi_poll, 64);