[U-Boot] [PATCH 0/4] Accurate boot time measurement

[Detlev Zundel <dzu@denx.de>]

Hi Simon and Wolfgang,

[...]

> In terms of all this discussion I can see your point :-) I did have
> expressions of interest from two people including one I thought was at your
> company, which I why I went to the effort to clean up and submit this. At
> that time I didn't realise it would be such a touchy subject.

I don't believe this topic to be touchy, it's just that Wolfgang trying
to keep the whole code base in shape has a healthy inertia before
introducing changes that may be difficult to keep consistent over the
multitude of SoCs that we support.

To throw in my personal view again, I still would like to see such an
infrastructure to get into U-Boot code.  I fully agree with Wolfgang
that practically the printfs and timing are a method already in place to
do measurements.  On the other hand my experience has shown that for
some reason or other this has never been widely used.  So effectively,
it wasn't too helpful for the project itself.  

So I still believe that if we _had_ an infrastructure like you propose,
we would get more people interested in _actually_ measuring and
improving the code base, which would certainly be a good thing.  

Of course we have systems that are very limited in their ressources, but
this is the reason why many features of U-Boot are opt-in features not
forcing any resource usage on such boards.  So if some of them are so
short on resources that they cannot use such a timing framework, then so
be it.  But as most of the probably are in the legacy code base, they
should not stop us from getting getting positive effects for the
currently important boards and architectures.

Cheers
  Detlev

-- 
A change in language can transform our appreciation of the cosmos
                       -- Benjamin Lee Whorf
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