linux-kernel - Re: [PATCH v4 3/3] printk: Remove redundant CONFIG_BASE

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Date: Tue, 6 Feb 2024 22:25:43 +0900
From: Masahiro Yamada <masahiroy@...nel.org>
To: Yoann Congal <yoann.congal@...le.fr>
Cc: linux-fsdevel@...r.kernel.org, linux-kbuild@...r.kernel.org, 
	linux-kernel@...r.kernel.org, linux-serial@...r.kernel.org, x86@...nel.org, 
	André Almeida <andrealmeid@...lia.com>, 
	Borislav Petkov <bp@...en8.de>, Darren Hart <dvhart@...radead.org>, 
	Dave Hansen <dave.hansen@...ux.intel.com>, Davidlohr Bueso <dave@...olabs.net>, 
	Geert Uytterhoeven <geert@...ux-m68k.org>, Greg Kroah-Hartman <gregkh@...uxfoundation.org>, 
	"H . Peter Anvin" <hpa@...or.com>, Ingo Molnar <mingo@...hat.com>, Jiri Slaby <jirislaby@...nel.org>, 
	John Ogness <john.ogness@...utronix.de>, Josh Triplett <josh@...htriplett.org>, 
	Matthew Wilcox <willy@...radead.org>, Peter Zijlstra <peterz@...radead.org>, 
	Petr Mladek <pmladek@...e.com>, Sergey Senozhatsky <senozhatsky@...omium.org>, 
	Steven Rostedt <rostedt@...dmis.org>, Thomas Gleixner <tglx@...utronix.de>, 
	Willem de Bruijn <willemdebruijn.kernel@...il.com>
Subject: Re: [PATCH v4 3/3] printk: Remove redundant CONFIG_BASE_FULL

On Tue, Feb 6, 2024 at 9:13 AM Yoann Congal <yoann.congal@...le.fr> wrote:
>
> CONFIG_BASE_FULL is equivalent to !CONFIG_BASE_SMALL and is enabled by
> default: CONFIG_BASE_SMALL is the special case to take care of.
> So, remove CONFIG_BASE_FULL and move the config choice to
> CONFIG_BASE_SMALL (which defaults to 'n')
>
> Signed-off-by: Yoann Congal <yoann.congal@...le.fr>
> ---
> v3->v4:
> * Split "switch CONFIG_BASE_SMALL to bool" and "Remove the redundant
>   config" (this patch) into two patches
> * keep CONFIG_BASE_SMALL instead of CONFIG_BASE_FULL
> ---
>  init/Kconfig | 13 ++++---------
>  1 file changed, 4 insertions(+), 9 deletions(-)
>
> diff --git a/init/Kconfig b/init/Kconfig
> index d4b16cad98502..4ecf2572d00ee 100644
> --- a/init/Kconfig
> +++ b/init/Kconfig
> @@ -1581,11 +1581,11 @@ config PCSPKR_PLATFORM
>           This option allows to disable the internal PC-Speaker
>           support, saving some memory.
>
> -config BASE_FULL
> -       default y
> -       bool "Enable full-sized data structures for core" if EXPERT
> +config BASE_SMALL
> +       default n



A nit.

Please drop the redundant 'default n' next time
(as it seems you will have a change to send v5)







> +       bool "Enable smaller-sized data structures for core" if EXPERT
>         help
> -         Disabling this option reduces the size of miscellaneous core
> +         Enabling this option reduces the size of miscellaneous core
>           kernel data structures. This saves memory on small machines,
>           but may reduce performance.
>
> @@ -1940,11 +1940,6 @@ config RT_MUTEXES
>         bool
>         default y if PREEMPT_RT
>
> -config BASE_SMALL
> -       bool
> -       default y if !BASE_FULL
> -       default n
> -
>  config MODULE_SIG_FORMAT
>         def_bool n
>         select SYSTEM_DATA_VERIFICATION
> --
> 2.39.2
>


-- 
Best Regards
Masahiro Yamada