linux-kernel - Re: [rft, PATCH v1 4/4] kernel.h: Split out ARRAY

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Message-ID: <Y1bWBedax9lP2E3K@p183>
Date:   Mon, 24 Oct 2022 21:14:29 +0300
From:   Alexey Dobriyan <adobriyan@...il.com>
To:     Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Cc:     mingo@...nel.org, akpm@...ux-foundation.org,
        linux-kernel@...r.kernel.org
Subject: Re: [rft, PATCH v1 4/4] kernel.h: Split out ARRAY_SZIE()

On Mon, Oct 24, 2022 at 07:05:18PM +0300, Andy Shevchenko wrote:
> On Mon, Oct 24, 2022 at 06:44:50PM +0300, Alexey Dobriyan wrote:
> > > include/linux/array_size.h | 13 +++++++++++++
> > 
> > All of this is pessimisation unless you're removing
> > 
> > 	+#include <linux/array_size.h>
> > 
> > from kernel.h which you aren't doing.
> > 
> > container_of.h is just as silly.
> > 
> > kernel.h might need _some_ cleanup (like panic and tainted stuff) which
> > is rarely used but ARRAY_SIZE()?
> 
> Are you suggesting to slow down compilation with inclusion of tons of unneeded
> stuff in the zillions of drivers?
> 
> Or you are talking that we need to abandon most of the headers and combine
> everything into kernel.h? I think this is what is silly.

It hard to escape kernel.h so you will be including it anyway.
Unless you delete, say, kstrtox.h from kernel.h, it is pointless busywork.