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ixgbe: Use irq_update_affinity_hint()

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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>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Link: https://lore.kernel.org/r/20210903152430.244937-10-nitesh@redhat.com
This commit is contained in:
Nitesh Narayan Lal 2021-09-03 11:24:25 -04:00 committed by Thomas Gleixner
parent b8b9dd5252
commit cc493264c0
1 changed files with 5 additions and 5 deletions
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10
drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
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@ -3247,8 +3247,8 @@ static int ixgbe_request_msix_irqs(struct ixgbe_adapter *adapter)
/* If Flow Director is enabled, set interrupt affinity */
if (adapter->flags & IXGBE_FLAG_FDIR_HASH_CAPABLE) {
/* assign the mask for this irq */
irq_set_affinity_hint(entry->vector,
&q_vector->affinity_mask);
irq_update_affinity_hint(entry->vector,
&q_vector->affinity_mask);
}
}
@ -3264,8 +3264,8 @@ static int ixgbe_request_msix_irqs(struct ixgbe_adapter *adapter)
free_queue_irqs:
while (vector) {
vector--;
irq_set_affinity_hint(adapter->msix_entries[vector].vector,
NULL);
irq_update_affinity_hint(adapter->msix_entries[vector].vector,
NULL);
free_irq(adapter->msix_entries[vector].vector,
adapter->q_vector[vector]);
}
@ -3398,7 +3398,7 @@ static void ixgbe_free_irq(struct ixgbe_adapter *adapter)
continue;
/* clear the affinity_mask in the IRQ descriptor */
irq_set_affinity_hint(entry->vector, NULL);
irq_update_affinity_hint(entry->vector, NULL);
free_irq(entry->vector, q_vector);
}