linux-kernel - Re: [PATCH] parisc: add sysctl file interface panic_on

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Message-ID: <e43deb0d-d01e-dde7-b8dc-7988ae38f1b0@gmx.de>
Date:   Fri, 8 May 2020 23:37:34 +0200
From:   Helge Deller <deller@....de>
To:     Xiaoming Ni <nixiaoming@...wei.com>, mcgrof@...nel.org,
        keescook@...omium.org, yzaikin@...gle.com,
        James.Bottomley@...senPartnership.com
Cc:     linux-kernel@...r.kernel.org, linux-fsdevel@...r.kernel.org,
        linux-parisc@...r.kernel.org, wangle6@...wei.com,
        victor.lisheng@...wei.com
Subject: Re: [PATCH] parisc: add sysctl file interface panic_on_stackoverflow

On 11.04.20 15:06, Xiaoming Ni wrote:
> The variable sysctl_panic_on_stackoverflow is used in
> arch/parisc/kernel/irq.c and arch/x86/kernel/irq_32.c, but the sysctl file
> interface panic_on_stackoverflow only exists on x86.
>
> Add sysctl file interface panic_on_stackoverflow for parisc
>
> Signed-off-by: Xiaoming Ni <nixiaoming@...wei.com>

Acked-by: Helge Deller <deller@....de>

Helge


> ---
>  kernel/sysctl.c | 20 +++++++++++---------
>  1 file changed, 11 insertions(+), 9 deletions(-)
>
> diff --git a/kernel/sysctl.c b/kernel/sysctl.c
> index 8a176d8..b9ff323 100644
> --- a/kernel/sysctl.c
> +++ b/kernel/sysctl.c
> @@ -994,30 +994,32 @@ static int sysrq_sysctl_handler(struct ctl_table *table, int write,
>  		.proc_handler   = proc_dointvec,
>  	},
>  #endif
> -#if defined(CONFIG_X86)
> +
> +#if (defined(CONFIG_X86_32) || defined(CONFIG_PARISC)) && \
> +	defined(CONFIG_DEBUG_STACKOVERFLOW)
>  	{
> -		.procname	= "panic_on_unrecovered_nmi",
> -		.data		= &panic_on_unrecovered_nmi,
> +		.procname	= "panic_on_stackoverflow",
> +		.data		= &sysctl_panic_on_stackoverflow,
>  		.maxlen		= sizeof(int),
>  		.mode		= 0644,
>  		.proc_handler	= proc_dointvec,
>  	},
> +#endif
> +#if defined(CONFIG_X86)
>  	{
> -		.procname	= "panic_on_io_nmi",
> -		.data		= &panic_on_io_nmi,
> +		.procname	= "panic_on_unrecovered_nmi",
> +		.data		= &panic_on_unrecovered_nmi,
>  		.maxlen		= sizeof(int),
>  		.mode		= 0644,
>  		.proc_handler	= proc_dointvec,
>  	},
> -#ifdef CONFIG_DEBUG_STACKOVERFLOW
>  	{
> -		.procname	= "panic_on_stackoverflow",
> -		.data		= &sysctl_panic_on_stackoverflow,
> +		.procname	= "panic_on_io_nmi",
> +		.data		= &panic_on_io_nmi,
>  		.maxlen		= sizeof(int),
>  		.mode		= 0644,
>  		.proc_handler	= proc_dointvec,
>  	},
> -#endif
>  	{
>  		.procname	= "bootloader_type",
>  		.data		= &bootloader_type,
>