linux-kernel - Re: [PATCH 08/11] sysctl: Add size to register_sysctl

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Date:   Wed, 21 Jun 2023 12:47:58 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     Joel Granados <j.granados@...sung.com>
Cc:     mcgrof@...nel.org, Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>,
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Subject: Re: [PATCH 08/11] sysctl: Add size to register_sysctl_init

On Wed, Jun 21, 2023 at 11:09:57AM +0200, Joel Granados wrote:
>  static int __init random_sysctls_init(void)
>  {
> -	register_sysctl_init("kernel/random", random_table);
> +	register_sysctl_init("kernel/random", random_table,
> +			     ARRAY_SIZE(random_table));

As mentioned before, why not just do:

#define register_sysctl_init(string, table)	\
	__register_sysctl_init(string, table, ARRAY_SIZE(table);

or something like that?

That way no callers need to change AND you prevent the size from ever
being incorrect?

thanks,

greg k-h