linux-kernel - Re: [PATCH 1/1] driver core: use NUMA_NO_NODE during device

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Date:   Thu, 30 Sep 2021 16:41:13 +0200
From:   Krzysztof Wilczyński <kw@...ux.com>
To:     Max Gurtovoy <mgurtovoy@...dia.com>
Cc:     hch@...radead.org, linux-kernel@...r.kernel.org,
        gregkh@...uxfoundation.org, stefanha@...hat.com, oren@...dia.com,
        linux-pci@...r.kernel.org
Subject: Re: [PATCH 1/1] driver core: use NUMA_NO_NODE during
 device_initialize

Hi Max,

> Don't use (-1) constant for setting initial device node. Instead, use
> the generic NUMA_NO_NODE definition to indicate that "no node id
> specified".
> 
> Signed-off-by: Max Gurtovoy <mgurtovoy@...dia.com>
> ---
>  drivers/base/core.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/base/core.c b/drivers/base/core.c
> index e65dd803a453..2b4b46f6c676 100644
> --- a/drivers/base/core.c
> +++ b/drivers/base/core.c
> @@ -2838,7 +2838,7 @@ void device_initialize(struct device *dev)
>  	spin_lock_init(&dev->devres_lock);
>  	INIT_LIST_HEAD(&dev->devres_head);
>  	device_pm_init(dev);
> -	set_dev_node(dev, -1);
> +	set_dev_node(dev, NUMA_NO_NODE);

We might have one of these to fix in the PCI tree, as per:

  https://elixir.bootlin.com/linux/v5.15-rc3/source/drivers/pci/pci-sysfs.c#L84

Would this be of interest to you for a potential v2?

	Krzysztof