netdev - RE: [net-next 10/17] i40e: clean up PTP log messages

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Message-ID: <FC41C24E35F18A40888AACA1A36F3E418ADD011A@fmsmsx115.amr.corp.intel.com>
Date:	Thu, 15 Jan 2015 15:01:42 +0000
From:	"Nelson, Shannon" <shannon.nelson@...el.com>
To:	David Laight <David.Laight@...LAB.COM>,
	"Kirsher, Jeffrey T" <jeffrey.t.kirsher@...el.com>,
	"davem@...emloft.net" <davem@...emloft.net>
CC:	"netdev@...r.kernel.org" <netdev@...r.kernel.org>,
	"nhorman@...hat.com" <nhorman@...hat.com>,
	"sassmann@...hat.com" <sassmann@...hat.com>,
	"jogreene@...hat.com" <jogreene@...hat.com>,
	"Keller, Jacob E" <jacob.e.keller@...el.com>
Subject: RE: [net-next 10/17] i40e: clean up PTP log messages

> From: David Laight [mailto:David.Laight@...LAB.COM]
> Sent: Thursday, January 15, 2015 4:35 AM
> 
> From: Jeff Kirsher
> > From: Shannon Nelson <shannon.nelson@...el.com>
> >
> > The netdev name at init time often defaults to eth0 but later gets
> changed
> > by UDEV, so printing it here is misleading.
> 
> Without the interface name you stand zero chance of working out which
> one it is.
> With it, and provided all the interface renames get into dmesg, you
> stand
> at least some chance.

The dev_info() messages have the PCI device and function number in the string, so it's really not too hard to track down the resulting netdev port:
Jan 13 15:46:55 snelson3-cup kernel: [621235.401627] i40e 0000:84:00.1: PHC enabled

Later messages use netdev_info() and have both the device number and the netdev name:
Jan 13 15:46:56 snelson3-cup kernel: [621236.508868] i40e 0000:04:00.1 p261p2: NIC Link is Up 10 Gbps Full Duplex, Flow Control: None

Note that the driver name appears in both as well.

sln

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