Re: [PATCH v1 1/1] Add kernel parameter for kernel version

[Richard Weinberger]

On Fri, Jun 6, 2014 at 12:56 AM, eric ernst <eric.ernst@xxxxxxxxxxxxxxx> wrote:
>
> On 14-06-05 03:29 PM, Randy Dunlap wrote:
>>
>> On 06/05/2014 03:15 PM, eric ernst wrote:
>>>
>>> On 14-06-05 03:16 PM, Andrew Morton wrote:
>>>>
>>>> On Thu,  5 Jun 2014 15:09:17 -0700 eric.ernst@xxxxxxxxxxxxxxx wrote:
>>>>
>>>>> Create a kernel cmdline parameter, "version_addendum", which can be
>>>>> used to add text to the kernel version that is reported from
>>>>> /proc/version.
>>>>
>>>> why?
>>>
>>> We have a need to keep a single product binary (kernel) across multiple
>>> android devices.  A subset of these platforms are looking for extra
>>> versioning information appended to it, accessible via /proc/version.  Rather
>>> than build multiple otherwise identical kernels with only this extended
>>> versioning as differentiation, we are looking to make this a command line
>>> parameter.  Understandable if there isn't enough value-add for the community
>>> in this patch, but I figured I'd give the patch a shot, as we need this
>>> functionality locally.  Thanks.
>>
>> Please use a newline character every 70-72 characters instead of assuming
>> that all email programs will break that extra long line up into a readable
>> format.  (mine does not.)
>
> Ack - sorry Randy - it was a quick cp / paste from earlier in the thread.
>
>>
>> What software needs to know the version info?  how early does it run?
>> Could it get the version info from 'uname -r' instead of from
>> /proc/version?
>>
>> thanks,
>
> This'll end up being used by a third party customer for tracking particular
> devices, so I'm sure "much, much later" in user space. While I'm sure they
> could use uname instead, the specific request was for /proc/version.


sandpuppy:/home/rw # echo "Windows" > /tmp/version
sandpuppy:/home/rw # mount --bind /tmp/version /proc/version
sandpuppy:/home/rw # cat /proc/version
Windows

-- 
Thanks,
//richard
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/