linux-kernel - Re: [PATCH v1 13/14] net/mlx5: Use irq_update_affinity

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Message-ID: <YNBHUMRqc+s0JesY@unreal>
Date:   Mon, 21 Jun 2021 11:01:20 +0300
From:   Leon Romanovsky <leon@...nel.org>
To:     Nitesh Narayan Lal <nitesh@...hat.com>
Cc:     linux-kernel@...r.kernel.org, linux-scsi@...r.kernel.org,
        intel-wired-lan@...ts.osuosl.org, netdev@...r.kernel.org,
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Subject: Re: [PATCH v1 13/14] net/mlx5: Use irq_update_affinity_hint

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@...hat.com>
> ---
>  drivers/net/ethernet/mellanox/mlx5/core/pci_irq.c | 6 +++---
>  1 file changed, 3 insertions(+), 3 deletions(-)
> 

Thanks,
Reviewed-by: Leon Romanovsky <leonro@...dia.com>