linux-kernel - Re: [PATCH 3/4] printk: use a clever macro

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Date:	Wed, 9 Jul 2014 19:58:01 +0200
From:	Geert Uytterhoeven <geert@...ux-m68k.org>
To:	Alex Elder <elder@...aro.org>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	Andi Kleen <ak@...ux.intel.com>, bp@...e.de,
	Jan Kara <jack@...e.cz>, John Stultz <john.stultz@...aro.org>,
	pmladek@...e.cz, Steven Rostedt <rostedt@...dmis.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 3/4] printk: use a clever macro

Hi Alex,

On Wed, Jul 9, 2014 at 3:04 PM, Alex Elder <elder@...aro.org> wrote:
> --- a/kernel/printk/printk.c
> +++ b/kernel/printk/printk.c
> @@ -453,11 +453,7 @@ static int log_store(int facility, int level,
>         return msg->text_len;
>  }
>
> -#ifdef CONFIG_SECURITY_DMESG_RESTRICT
> -int dmesg_restrict = 1;
> -#else
> -int dmesg_restrict;
> -#endif
> +int dmesg_restrict = IS_ENABLED(CONFIG_SECURITY_DMESG_RESTRICT);

Doesn't this move dmesg_restrict from the bss to the data section
in case CONFIG_SECURITY_DMESG_RESTRICT is not enabled, due
to the explicit initialization to zero?

Gr{oetje,eeting}s,

                        Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@...ux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds
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