linux-kernel - Re: [PATCH 07/10] printk: Remove the now superfluous sentinel elements from ctl

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Message-ID: <ZWX0L4lV8TWOgcpv@alley>
Date:   Tue, 28 Nov 2023 15:07:43 +0100
From:   Petr Mladek <pmladek@...e.com>
To:     j.granados@...sung.com
Cc:     Luis Chamberlain <mcgrof@...nel.org>, willy@...radead.org,
        josh@...htriplett.org, Kees Cook <keescook@...omium.org>,
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Subject: Re: [PATCH 07/10] printk: Remove the now superfluous sentinel
 elements from ctl_table array

On Tue 2023-11-07 14:45:07, Joel Granados via B4 Relay wrote:
> From: Joel Granados <j.granados@...sung.com>
> 
> This commit comes at the tail end of a greater effort to remove the
> empty elements at the end of the ctl_table arrays (sentinels) which
> will reduce the overall build time size of the kernel and run time
> memory bloat by ~64 bytes per sentinel (further information Link :
> https://lore.kernel.org/all/ZO5Yx5JFogGi%2FcBo@bombadil.infradead.org/)
> 
> rm sentinel element from printk_sysctls
> 
> Signed-off-by: Joel Granados <j.granados@...sung.com>

I am a bit sceptical if the size and time reduction is worth the
effort. I feel that this change makes the access a bit less secure.

Well, almost all arrays are static so that it should just work.
The patch does what it says. Feel free to use:

Reviewed-by: Petr Mladek <pmladek@...e.com>

Best Regards,
Petr