Re: [RFC PATCH 0/3] Add device tree build information

Frank Rowand
2020-01-21T03:20:58Z

On 1/20/20 12:28 PM, Steve McIntyre wrote:
> Hi Frank!
>
> Thanks for the link back to the previous discussion, it's very
> helpful.
>
> On Mon, Jan 20, 2020 at 10:14:22AM -0600, Frank Rowand wrote:
>> On 1/20/20 4:56 AM, Alexandre Torgue wrote:
>
> ...
>
>>> and the date). There are no "dtb versions", and "absolute/relative"
>>> path which created concerns. One remaining concern is "reproducible
>>
>> Here is an example of the info from one of my builds:
>>
>> From Linux 5.5.0-rc2-dirty by frowand the Mon Jan 20 09:50:58 CST 2020.
>>
>> The information 'Linux 5.5.0-rc2-dirty' is precisely what was most objected
>> to in my proposal.
>
> ACK. :-( I'm surprised to see so much push-back on what looks like a
> simple piece of information here.

Me too.

>
> I've had users *specifically* asking for this kind of identification
> so that they can verify the version of the DTB they're using at
> runtime. Right now it can be a guessing game, which does not help
> people trying to debug problems.
>
> Cheers,
>

If the information was reported as debug information via pr_debug(),
would that work for your use case? Or would the users' kernels
not have debug enabled in the configuration?

-Frank