I'm sorry for the late response.
(2016/09/22 18:31), Agustin Benito Bethencourt wrote:
during the Technical Committee Meeting, last Monday, Ben Hutchings
brought to the attention of the participants several topics to consider.
I would like to bring them here. This is the first one
++ When do CIP should pick up a kernel?
+++ Maintainability effort
New major versions of commercial Linux Distributions are released at 3-4
year intervals, so that typically only 4 versions need to be supported
at one time. Given that CIP's support period is meant to be even
longer, it won?t be sustainable to extend every 'long term' branch, but
only takes on a new branch every 2-4 years.
Assuming we release new products in every 2 years, 2-3-year release
cycle would be feasible.
Maintaining multiple branches is hard work, but its effort would be
decreased after 5 years from the release.
Hitachi, Ltd. Research & Development Group
+++ Backport effort
The longer the intervals between new CIP branches, the greater need
there will be for CIP or individual members to backport new hardware
support (which carries its own risks).
This trade-off is perhaps the most difficult issue to decide.