linux-kernel - Re: [PATCH v3 09/14] ixgbe: Use irq_update_affinity

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Message-ID: <1f083139-4faf-126d-b14c-29d228474d6b@intel.com>
Date:   Tue, 13 Jul 2021 15:01:53 -0700
From:   Jesse Brandeburg <jesse.brandeburg@...el.com>
To:     Nitesh Narayan Lal <nitesh@...hat.com>,
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Subject: Re: [PATCH v3 09/14] ixgbe: Use irq_update_affinity_hint

On 7/13/2021 2:14 PM, 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@...hat.com>

Thanks!

Acked-by: Jesse Brandeburg <jesse.brandeburg@...el.com>