netdev - Re: [net-next 11/15] i40e: Implement debug macro hw_dbg using pr

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Date:   Wed, 28 Aug 2019 15:39:53 -0700
From:   Jakub Kicinski <jakub.kicinski@...ronome.com>
To:     Jeff Kirsher <jeffrey.t.kirsher@...el.com>
Cc:     davem@...emloft.net,
        "Mauro S. M. Rodrigues" <maurosr@...ux.vnet.ibm.com>,
        netdev@...r.kernel.org, nhorman@...hat.com, sassmann@...hat.com,
        Andrew Bowers <andrewx.bowers@...el.com>
Subject: Re: [net-next 11/15] i40e: Implement debug macro hw_dbg using
 pr_debug

On Tue, 27 Aug 2019 23:44:03 -0700, Jeff Kirsher wrote:
> diff --git a/drivers/net/ethernet/intel/i40e/i40e_osdep.h b/drivers/net/ethernet/intel/i40e/i40e_osdep.h
> index a07574bff550..c0c9ce3eab23 100644
> --- a/drivers/net/ethernet/intel/i40e/i40e_osdep.h
> +++ b/drivers/net/ethernet/intel/i40e/i40e_osdep.h
> @@ -18,7 +18,12 @@
>   * actual OS primitives
>   */
>  
> -#define hw_dbg(hw, S, A...)	do {} while (0)
> +#define hw_dbg(hw, S, A...)							\
> +do {										\
> +	int domain = pci_domain_nr(((struct i40e_pf *)(hw)->back)->pdev->bus);	\
> +	pr_debug("i40e %04x:%02x:%02x.%x " S, domain, (hw)->bus.bus_id,		\
> +		 (hw)->bus.device, (hw)->bus.func, ## A);			\

This looks like open coded dev_dbg() / dev_name(), why?

> +} while (0)