[PATCH net-next] ibmvnic: Increase driver logging
Thomas Falcon
tlfalcon at linux.ibm.com
Fri Jul 17 01:59:58 AEST 2020
On 7/15/20 8:29 PM, David Miller wrote:
> From: Jakub Kicinski <kuba at kernel.org>
> Date: Wed, 15 Jul 2020 17:06:32 -0700
>
>> On Wed, 15 Jul 2020 18:51:55 -0500 Thomas Falcon wrote:
>>> free_netdev(netdev);
>>> dev_set_drvdata(&dev->dev, NULL);
>>> + netdev_info(netdev, "VNIC client device has been successfully removed.\n");
>> A step too far, perhaps.
>>
>> In general this patch looks a little questionable IMHO, this amount of
>> logging output is not commonly seen in drivers. All the the info
>> messages are just static text, not even carrying any extra information.
>> In an era of ftrace, and bpftrace, do we really need this?
> Agreed, this is too much. This is debugging, and thus suitable for tracing
> facilities, at best.
Thanks for your feedback. I see now that I was overly aggressive with
this patch to be sure, but it would help with narrowing down problems at
a first glance, should they arise. The driver in its current state logs
very little of what is it doing without the use of additional debugging
or tracing facilities. Would it be worth it to pursue a less aggressive
version or would that be dead on arrival? What are acceptable driver
operations to log at this level?
Thanks,
Tom
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