netdev - Re: [PATCH net-next v10 1/2] driver core: auxiliary bus: show auxiliary device IRQs

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Message-ID: <2024071041-frosted-stonework-2c60@gregkh>
Date: Wed, 10 Jul 2024 15:01:04 +0200
From: Greg KH <gregkh@...uxfoundation.org>
To: Shay Drory <shayd@...dia.com>
Cc: netdev@...r.kernel.org, pabeni@...hat.com, davem@...emloft.net,
	kuba@...nel.org, edumazet@...gle.com, david.m.ertman@...el.com,
	rafael@...nel.org, ira.weiny@...el.com, linux-rdma@...r.kernel.org,
	leon@...nel.org, tariqt@...dia.com, Simon Horman <horms@...nel.org>,
	Parav Pandit <parav@...dia.com>
Subject: Re: [PATCH net-next v10 1/2] driver core: auxiliary bus: show
 auxiliary device IRQs

On Mon, Jul 08, 2024 at 08:55:36AM +0300, Shay Drory wrote:
> PCI subfunctions (SF) are anchored on the auxiliary bus. PCI physical
> and virtual functions are anchored on the PCI bus. The irq information
> of each such function is visible to users via sysfs directory "msi_irqs"
> containing files for each irq entry. However, for PCI SFs such
> information is unavailable. Due to this users have no visibility on IRQs
> used by the SFs.
> Secondly, an SF can be multi function device supporting rdma, netdevice
> and more. Without irq information at the bus level, the user is unable
> to view or use the affinity of the SF IRQs.
> 
> Hence to match to the equivalent PCI PFs and VFs, add "irqs" directory,
> for supporting auxiliary devices, containing file for each irq entry.
> 
> For example:
> $ ls /sys/bus/auxiliary/devices/mlx5_core.sf.1/irqs/
> 50  51  52  53  54  55  56  57  58
> 
> Cc: Simon Horman <horms@...nel.org>
> Reviewed-by: Parav Pandit <parav@...dia.com>
> Signed-off-by: Shay Drory <shayd@...dia.com>

Thanks for sticking with this.  As I'm guessing this is for the
networking tree, feel free for it to go through there:

Reviewed-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>