The driver uses irq_set_affinity_hint() to:
- Set the affinity_hint which is consumed by the userspace for
distributing the interrupts
- Enforce affinity
As per commit
352f58b0d9f2 ("net-next/hinic: Set Rxq irq to specific cpu
for NUMA"), the hinic driver enforces its own affinity to bind IRQs to the
local NUMA node. However, irq_set_affinity_hint() applying the provided
cpumask as an affinity for the interrupt 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_set_affinity_and_hint()
where the provided mask needs to be applied as the affinity and
affinity_hint pointer needs to be set and replace with
irq_update_affinity_hint() where only affinity_hint needs to be updated.
Signed-off-by: Nitesh Narayan Lal <nitesh@redhat.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/r/20210903152430.244937-13-nitesh@redhat.com
goto err_req_irq;
cpumask_set_cpu(qp->q_id % num_online_cpus(), &rq->affinity_mask);
- err = irq_set_affinity_hint(rq->irq, &rq->affinity_mask);
+ err = irq_set_affinity_and_hint(rq->irq, &rq->affinity_mask);
if (err)
goto err_irq_affinity;
{
struct hinic_rq *rq = rxq->rq;
- irq_set_affinity_hint(rq->irq, NULL);
+ irq_update_affinity_hint(rq->irq, NULL);
free_irq(rq->irq, rxq);
rx_del_napi(rxq);
}