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| author | Israel Rukshin <israelr@mellanox.com> | 2018-04-12 09:49:11 +0000 |
|---|---|---|
| committer | Saeed Mahameed <saeedm@mellanox.com> | 2018-04-26 12:43:19 -0700 |
| commit | 6082d9c9c94a408d7409b5f2e4e42ac9e8b16d0d (patch) | |
| tree | cc15d44b4e8d71aaa4cced3961b0ae3c71246f42 /include | |
| parent | 35f80acb24cd53dabd65e0660e46afdf5c45991d (diff) | |
| download | linux-6082d9c9c94a408d7409b5f2e4e42ac9e8b16d0d.tar.bz2 | |
net/mlx5: Fix mlx5_get_vector_affinity function
Adding the vector offset when calling to mlx5_vector2eqn() is wrong.
This is because mlx5_vector2eqn() checks if EQ index is equal to vector number
and the fact that the internal completion vectors that mlx5 allocates
don't get an EQ index.
The second problem here is that using effective_affinity_mask gives the same
CPU for different vectors.
This leads to unmapped queues when calling it from blk_mq_rdma_map_queues().
This doesn't happen when using affinity_hint mask.
Fixes: 2572cf57d75a ("mlx5: fix mlx5_get_vector_affinity to start from completion vector 0")
Fixes: 05e0cc84e00c ("net/mlx5: Fix get vector affinity helper function")
Signed-off-by: Israel Rukshin <israelr@mellanox.com>
Reviewed-by: Max Gurtovoy <maxg@mellanox.com>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/mlx5/driver.h | 12 |
1 files changed, 3 insertions, 9 deletions
diff --git a/include/linux/mlx5/driver.h b/include/linux/mlx5/driver.h index 767d193c269a..2a156c5dfadd 100644 --- a/include/linux/mlx5/driver.h +++ b/include/linux/mlx5/driver.h @@ -1284,25 +1284,19 @@ enum { }; static inline const struct cpumask * -mlx5_get_vector_affinity(struct mlx5_core_dev *dev, int vector) +mlx5_get_vector_affinity_hint(struct mlx5_core_dev *dev, int vector) { - const struct cpumask *mask; struct irq_desc *desc; unsigned int irq; int eqn; int err; - err = mlx5_vector2eqn(dev, MLX5_EQ_VEC_COMP_BASE + vector, &eqn, &irq); + err = mlx5_vector2eqn(dev, vector, &eqn, &irq); if (err) return NULL; desc = irq_to_desc(irq); -#ifdef CONFIG_GENERIC_IRQ_EFFECTIVE_AFF_MASK - mask = irq_data_get_effective_affinity_mask(&desc->irq_data); -#else - mask = desc->irq_common_data.affinity; -#endif - return mask; + return desc->affinity_hint; } #endif /* MLX5_DRIVER_H */ |