AuxXxilium/linux_dsm_epyc7002
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net/mlx5: EQ, Use the right place to store/read IRQ affinity hint

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Currently the cpu affinity hint mask for completion EQs is stored and
read from the wrong place, since reading and storing is done from the
same index, there is no actual issue with that, but internal irq_info
for completion EQs stars at MLX5_EQ_VEC_COMP_BASE offset in irq_info
array, this patch changes the code to use the correct offset to store
and read the IRQ affinity hint.

Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Reviewed-by: Leon Romanovsky <leonro@mellanox.com>
Reviewed-by: Tariq Toukan <tariqt@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
This commit is contained in:
Saeed Mahameed 2018-11-19 10:52:31 -08:00 committed by Leon Romanovsky
parent b02394aa75
commit 1e86ace4c1
3 changed files with 10 additions and 8 deletions
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2
drivers/net/ethernet/mellanox/mlx5/core/en_main.c
View File

@ -1760,7 +1760,7 @@ static void mlx5e_close_cq(struct mlx5e_cq *cq)
static int mlx5e_get_cpu(struct mlx5e_priv *priv, int ix)
{
return cpumask_first(priv->mdev->priv.irq_info[ix].mask);
return cpumask_first(priv->mdev->priv.irq_info[ix + MLX5_EQ_VEC_COMP_BASE].mask);
}
static int mlx5e_open_tx_cqs(struct mlx5e_channel *c,

14
drivers/net/ethernet/mellanox/mlx5/core/main.c
View File

@ -640,18 +640,19 @@ u64 mlx5_read_internal_timer(struct mlx5_core_dev *dev)
static int mlx5_irq_set_affinity_hint(struct mlx5_core_dev *mdev, int i)
{
struct mlx5_priv *priv = &mdev->priv;
int irq = pci_irq_vector(mdev->pdev, MLX5_EQ_VEC_COMP_BASE + i);
int vecidx = MLX5_EQ_VEC_COMP_BASE + i;
int irq = pci_irq_vector(mdev->pdev, vecidx);
if (!zalloc_cpumask_var(&priv->irq_info[i].mask, GFP_KERNEL)) {
if (!zalloc_cpumask_var(&priv->irq_info[vecidx].mask, GFP_KERNEL)) {
mlx5_core_warn(mdev, "zalloc_cpumask_var failed");
return -ENOMEM;
}
cpumask_set_cpu(cpumask_local_spread(i, priv->numa_node),
priv->irq_info[i].mask);
priv->irq_info[vecidx].mask);
if (IS_ENABLED(CONFIG_SMP) &&
irq_set_affinity_hint(irq, priv->irq_info[i].mask))
irq_set_affinity_hint(irq, priv->irq_info[vecidx].mask))
mlx5_core_warn(mdev, "irq_set_affinity_hint failed, irq 0x%.4x", irq);
return 0;
@ -659,11 +660,12 @@ static int mlx5_irq_set_affinity_hint(struct mlx5_core_dev *mdev, int i)
static void mlx5_irq_clear_affinity_hint(struct mlx5_core_dev *mdev, int i)
{
int vecidx = MLX5_EQ_VEC_COMP_BASE + i;
struct mlx5_priv *priv = &mdev->priv;
int irq = pci_irq_vector(mdev->pdev, MLX5_EQ_VEC_COMP_BASE + i);
int irq = pci_irq_vector(mdev->pdev, vecidx);
irq_set_affinity_hint(irq, NULL);
free_cpumask_var(priv->irq_info[i].mask);
free_cpumask_var(priv->irq_info[vecidx].mask);
}
static int mlx5_irq_set_affinity_hints(struct mlx5_core_dev *mdev)

2
include/linux/mlx5/driver.h
View File

@ -1309,7 +1309,7 @@ enum {
static inline const struct cpumask *
mlx5_get_vector_affinity_hint(struct mlx5_core_dev *dev, int vector)
{
return dev->priv.irq_info[vector].mask;
return dev->priv.irq_info[vector + MLX5_EQ_VEC_COMP_BASE].mask;
}
#endif /* MLX5_DRIVER_H */