Keith Owens wrote:
> It takes time to do all the analysis to work out what has changed and
> what has been affected. You might know that you only changed one file
> but kernel build and make don't know that until they have checked
> everything. Changing one file or specifying a command override might
> affect one file or it might affect the entire kernel.
Doing that analysis once is fine. After that it should know what it has
to check if I only want foo/bar.o recompiled and that shouldn't take
> Otherwise let kbuild work out what has been affected.
That's the problem with kernel hackers, they want to know what's going
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