Re: [PATCH 00/17] Add memberof(), split some headers, and slightly simplify code

Hi Andy,

On 11/19/21 16:34, Andy Shevchenko wrote:

On Fri, Nov 19, 2021 at 04:06:27PM +0100, Alejandro Colomar (man-pages) wrote:

quoted

Yes, I would like to untangle the dependencies.

The main reason I started doing this splitting
is because I wouldn't be able to include
<linux/stddef.h> in some headers,
because it pulled too much stuff that broke unrelated things.

So that's why I started from there.

I for example would like to get NULL in memberof()
without puling anything else,
so <linux/NULL.h> makes sense for that.

I don't believe that the code that uses NULL won't include types.h.

I'm not sure about the error I got (I didn't write it down),
but I got a compilation error.
That's why I split NULL.

If one could anwer my doubt,
I would be in better position to learn how to avoid them.
See below.

On 11/19/21 16:06, Alejandro Colomar (man-pages) wrote:

BTW, I also have a longstanding doubt about
how header files are organized in the kernel,
and which headers can and cannot be included
from which other files.

For example I see that files in samples or scripts or tools,
that redefine many things such as offsetof() or ARRAY_SIZE(),
and I don't know if there's a good reason for that,
or if I should simply remove all that stuff and
include <linux/offsetof.h> everywhere I see offsetof() being used.

Thanks,
Alex



-- 
Alejandro Colomar
Linux man-pages comaintainer; https://www.kernel.org/doc/man-pages/
http://www.alejandro-colomar.es/

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