linux-kernel - Re: [PATCH v3 2/3] ipc: remove linebreaks from arguments of __register_sysctl

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Message-ID: <20240223095918.karsamdx3a2w3v7w@joelS2.panther.com>
Date: Fri, 23 Feb 2024 10:59:18 +0100
From: Joel Granados <j.granados@...sung.com>
To: Thomas Weißschuh <linux@...ssschuh.net>
CC: Luis Chamberlain <mcgrof@...nel.org>, <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v3 2/3] ipc: remove linebreaks from arguments of
 __register_sysctl_table

On Mon, Feb 19, 2024 at 09:19:23PM +0100, Thomas Weißschuh wrote:
> Calls to __register_sysctl_table will be validated by
> scripts/check-sysctl-docs. As this script is line-based remove the
> linebreak which would confuse the script.
> 
> Signed-off-by: Thomas Weißschuh <linux@...ssschuh.net>
> ---
>  ipc/ipc_sysctl.c | 3 +--
>  1 file changed, 1 insertion(+), 2 deletions(-)
> 
> diff --git a/ipc/ipc_sysctl.c b/ipc/ipc_sysctl.c
> index 8c62e443f78b..e4008288a3ba 100644
> --- a/ipc/ipc_sysctl.c
> +++ b/ipc/ipc_sysctl.c
> @@ -259,8 +259,7 @@ bool setup_ipc_sysctls(struct ipc_namespace *ns)
>  				tbl[i].data = NULL;
>  		}
>  
> -		ns->ipc_sysctls = __register_sysctl_table(&ns->ipc_set,
> -							  "kernel", tbl,
> +		ns->ipc_sysctls = __register_sysctl_table(&ns->ipc_set, "kernel", tbl,
>  							  ARRAY_SIZE(ipc_sysctls));
>  	}
>  	if (!ns->ipc_sysctls) {
This is very interesting and points to a bigger issue with the
check-sysctl-docs: which is that the AWK record separator is "\n" and it
require that the lines being analyzed follow a strict pattern; even if
that meant having a loooong line (not the case in this patch).

The final solution would be to change the separator to something less
line based to something more C based like RS=";{}". This is not a
blocker to this patchset as it actually fixes a broken script. But is an
interesting observation for whomever wants to continue this work.

Thx Thomas.

Best

-- 

Joel Granados

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