[U-Boot] [PATCH] kconfiglib: update to the latest version

[Ulf Magnusson]

On Fri, Jun 12, 2015 at 6:56 PM, Ulf Magnusson <ulfalizer at gmail.com> wrote:
> Corresponds to 2f319b8 in https://github.com/ulfalizer/Kconfiglib.
>
> Fixes:
>
>   - Unset user values when loading a zero-byte .config. (5e54e2c)
>   - Ignore indented .config assignments. (f8a7510)
>   - Do not require $srctree to be set for non-kernel projects. (d56e9c1)
>
> Also adds Python 3 support and has a lot of internal cleanup and
> optimization. Makes tools/genboardscfg.py run slightly faster.
>
> Signed-off-by: Ulf Magnusson <ulfalizer at gmail.com>
> ---
>  tools/buildman/kconfiglib.py | 2898 +++++++++++++++++++-----------------------
>  1 file changed, 1329 insertions(+), 1569 deletions(-)
>
> diff --git a/tools/buildman/kconfiglib.py b/tools/buildman/kconfiglib.py
> index 655cf44..e71f43e 100644
> --- a/tools/buildman/kconfiglib.py
> +++ b/tools/buildman/kconfiglib.py
> @@ -36,57 +36,61 @@ Kconfig-based configuration systems. Features include the following:
>
> [SNIP]

Adding __slots__ (https://docs.python.org/2/reference/datamodel.html#slots) to
the Kconfiglib classes reduces the runtime of genboardscfg.py further from 1.6
to 1.4 seconds on my system, also saving a lot of memory. It'd remove some
flexibility though (and breaks the kconfig-diff.py example), so it
should probably
be optional if I add it. Maybe genboardscfg.py is fast enough already.

/Ulf