| Message ID | 20210617182242.8637-14-nitesh@redhat.com |
|---|---|
| State | Superseded |
| Headers | show |
| Series | [v1,01/14] genirq: Provide new interfaces for affinity hints | expand |
On Thu, Jun 17, 2021 at 02:22:41PM -0400, Nitesh Narayan Lal wrote: > The driver uses irq_set_affinity_hint() to update the affinity_hint mask > that is consumed by the userspace to distribute the interrupts. However, > under the hood irq_set_affinity_hint() also applies the provided cpumask > (if not NULL) as the affinity for the given interrupt which is an > undocumented side effect. > > To remove this side effect irq_set_affinity_hint() has been marked > as deprecated and new interfaces have been introduced. Hence, replace the > irq_set_affinity_hint() with the new interface irq_update_affinity_hint() > that only updates the affinity_hint pointer. > > Signed-off-by: Nitesh Narayan Lal <nitesh@redhat.com> > --- > drivers/net/ethernet/mellanox/mlx5/core/pci_irq.c | 6 +++--- > 1 file changed, 3 insertions(+), 3 deletions(-) > Thanks, Reviewed-by: Leon Romanovsky <leonro@nvidia.com>
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/pci_irq.c b/drivers/net/ethernet/mellanox/mlx5/core/pci_irq.c index c3373fb1cd7f..a1b9434f4e25 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/pci_irq.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/pci_irq.c @@ -276,8 +276,8 @@ static int set_comp_irq_affinity_hint(struct mlx5_core_dev *mdev, int i) cpumask_set_cpu(cpumask_local_spread(i, mdev->priv.numa_node), irq->mask); if (IS_ENABLED(CONFIG_SMP) && - irq_set_affinity_hint(irqn, irq->mask)) - mlx5_core_warn(mdev, "irq_set_affinity_hint failed, irq 0x%.4x", + irq_update_affinity_hint(irqn, irq->mask)) + mlx5_core_warn(mdev, "irq_update_affinity_hint failed, irq 0x%.4x", irqn); return 0; @@ -291,7 +291,7 @@ static void clear_comp_irq_affinity_hint(struct mlx5_core_dev *mdev, int i) irq = mlx5_irq_get(mdev, vecidx); irqn = pci_irq_vector(mdev->pdev, vecidx); - irq_set_affinity_hint(irqn, NULL); + irq_update_affinity_hint(irqn, NULL); free_cpumask_var(irq->mask); }
The driver uses irq_set_affinity_hint() to update the affinity_hint mask that is consumed by the userspace to distribute the interrupts. However, under the hood irq_set_affinity_hint() also applies the provided cpumask (if not NULL) as the affinity for the given interrupt which is an undocumented side effect. To remove this side effect irq_set_affinity_hint() has been marked as deprecated and new interfaces have been introduced. Hence, replace the irq_set_affinity_hint() with the new interface irq_update_affinity_hint() that only updates the affinity_hint pointer. Signed-off-by: Nitesh Narayan Lal <nitesh@redhat.com> --- drivers/net/ethernet/mellanox/mlx5/core/pci_irq.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-)