Re: Bumping required kernels to 3.0 for Linux backports ?

[Luis R. Rodriguez]

On Wed, Apr 9, 2014 at 1:22 PM, Greg Kroah-Hartman
<gregkh@xxxxxxxxxxxxxxxxxxx> wrote:
> On Wed, Apr 09, 2014 at 01:01:23PM -0700, Luis R. Rodriguez wrote:
>> On Wed, Apr 9, 2014 at 12:12 PM, Greg Kroah-Hartman
>> <gregkh@xxxxxxxxxxxxxxxxxxx> wrote:
>> > On Wed, Apr 09, 2014 at 11:28:55AM -0700, Luis R. Rodriguez wrote:
>> >> On Wed, Apr 9, 2014 at 2:18 AM, Felix Fietkau <nbd@xxxxxxxxxxx> wrote:
>> >> > The oldest kernel in OpenWrt that we're still supporting with updates of
>> >> > the backports tree is 3.3, so raising the minimum requirement to 3.0 is
>> >> > completely fine with me.
>> >>
>> >> OK note that 3.3 is not listed on kernel.org as supported. I'm fine in
>> >> carrying the stuff for those for now but ultimately it'd also be nice
>> >> if we didn't even have to test the kernels in between which are not
>> >> listed. This does however raise the question of how often a kernel in
>> >> between a list of supported kernels gets picked up to be supported
>> >> eventually. Greg, Jiri, do you happen to know what the likelyhood of
>> >> that can be?
>> >
>> > I don't know of anything ever getting picked up after I have said it
>> > would not be supported anymore.
>>
>> Great! How soon after a release do you mention whether or not it will
>> be supported? Like say, 3.14, which was just released.
>
> I only mention it around the time that it would normally go end-of-life.
>
> For example, if 3.13 were to be a release that was going to be "long
> term", I would only say something around the normal time I would be no
> longer supporting it.  Like in 2-3 weeks from now.
>
> So for 3.14, I'll not say anything about that until 3.16-rc1 is out,
> give or take a week or two.
>
>> Also, as of late are you aware any distribution picking an unsupported
>> kernel for their next choice of kernel?
>
> Sure, lots do, as they don't line up with my release cycles (I only pick
> 1 long term kernel to maintain each year).  Look at the Ubuntu releases
> for examples of that.  Also openSUSE and Fedora (although Fedora does
> rev their kernel pretty regularly) don't usually line up.  The
> "enterprise" distros are different, but even then, they don't always
> line up either (which is why Jiri is maintaining 3.12...)
>
> Hope this helps,

It does! Unless I don't hear any complaints then given that some
distributions might choose a kernel in between and given also your
great documented story behind the gains on trying to steer folks
together on the 'ol 2.6.32 [0] and this now being faded, I'll be
bumping backports to only support >= 3.0 soon, but we'll include all
the series from 3.0 up to the latest. That should shrink compile /
test time / support time on backports to 1/2.

[0] http://www.kroah.com/log/linux/2.6.32-stable.html

  Luis
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