Re: [PATCH v5 1/3] Provide in-kernel headers to make extending kernel easier

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On Sun, 14 Apr 2019 12:38:34 -0700
Olof Johansson <olof@xxxxxxxxx> wrote:

> >From my perspective, this is where we're at:  
> 
> This patch seems to have been met with a lot of responses in the tone
> of "this is not an appealing solution". Meanwhile, some of the
> suggested alternative solutions have not worked out, and we are now at
> a point where there's less interest in exploring alternatives and
> arguments to merge as-is with only minor adjustments.

Another consideration to make is difficulty of support. Having a
tarball compressed headers may not be an appealing solution, but it
isn't one that would be too much of an issue to support. Having a
better interface would be difficult to get right, and if you get it
wrong, you are now stuck with supporting something that may become a
big pain to do so in the future.

> I'd be a *lot* less hesitant if this went into debugfs or another
> location than /proc, which is one of the most regression-sensitive
> interfaces we have in the kernel.
> 

I agree with this assessment. We shouldn't use config.gz as precedence
for this solution. config.gz should have been in debugfs to begin with,
but I don't believe debugfs was around when config.gz was introduced.
(Don't have time to look into the history of the two).

-- Steve



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