Re: [PATCH v2 1/3] lib/vsprintf: Sort headers alphabetically

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On Mon 2023-08-07 21:47:17, Rasmus Villemoes wrote:
> On 07/08/2023 16.58, Andy Shevchenko wrote:
> > On Mon, Aug 07, 2023 at 04:31:37PM +0200, Petr Mladek wrote:
> >> On Sat 2023-08-05 20:50:25, Andy Shevchenko wrote:
> >>> Sorting headers alphabetically helps locating duplicates, and
> >>> make it easier to figure out where to insert new headers.
> >>
> >> I agree that includes become a mess after some time. But I am
> >> not persuaded that sorting them alphabetically in random source
> >> files help anything.
> >>
> >> Is this part of some grand plan for the entire kernel, please?
> >> Is this outcome from some particular discussion?
> >> Will this become a well know rule checked by checkpatch.pl?
> >>
> >> I am personally not going to reject patches because of wrongly
> >> sorted headers unless there is some real plan behind it.
> >>
> >> I agree that it might look better. An inverse Christmas' tree
> >> also looks better. But it does not mean that it makes the life
> >> easier.
> > 
> > It does from my point of view as maintainability is increased.
> > 
> >> The important things are still hidden in the details
> >> (every single line).
> >>
> >> From my POV, this patch would just create a mess in the git
> >> history and complicate backporting.
> >>
> >> I am sorry but I will not accept this patch unless there
> >> is a wide consensus that this makes sense.
> > 
> > Your choice, of course, But I see in practice dup headers being
> > added, or some unrelated ones left untouched because header list
> > mess, and in those cases sorting can help (a bit) in my opinion.
> 
> I agree with Andy on this one. There doesn't need to be some grand
> master plan to apply this to the entire kernel, but doing it to
> individual files bit by bit does increase the maintainability. And I
> really don't buy the backporting argument. Sure, backporting some patch
> across the release that does the sorting is harder - but then,
> backporting the sorting patch itself is entirely trivial (maybe not the
> textual part, but redoing the semantics of it is). _However_,
> backporting a patch from release z to release y, both of which being
> later than the release x that did the sorting, is going to be _easier_.
> It also reduces merge conflicts - that's also why lots of Makefiles are
> kept sorted.

I am afraid that we will not find a consensus here. I agree that
the sorting has some advantage.

But I would still like to get some wider agreement on this move
from other subsystem. It is a good candidate for a mass change
which would be part of some plan.

I want to avoid reshuffling this more times according to personal
preferences. And I do not want to add this cosmetic subsystem
specific requirement.

Best Regards,
Petr




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