linux-kernel - Re: [PATCH] arm: ptdump: convert to DEFINE_SHOW

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Message-ID: <1f066306-570e-dfc7-8b4f-f787a6d40554@arm.com>
Date:   Wed, 7 Apr 2021 14:48:04 +0100
From:   Steven Price <steven.price@....com>
To:     Jisheng Zhang <Jisheng.Zhang@...aptics.com>,
        Russell King <linux@...linux.org.uk>
Cc:     linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] arm: ptdump: convert to DEFINE_SHOW_ATTRIBUTE

On 30/03/2021 04:20, Jisheng Zhang wrote:
> Use DEFINE_SHOW_ATTRIBUTE macro to simplify the code.
> 
> Signed-off-by: Jisheng Zhang <Jisheng.Zhang@...aptics.com>

Reviewed-by: Steven Price <steven.price@....com>

> ---
>   arch/arm/mm/ptdump_debugfs.c | 13 +------------
>   1 file changed, 1 insertion(+), 12 deletions(-)
> 
> diff --git a/arch/arm/mm/ptdump_debugfs.c b/arch/arm/mm/ptdump_debugfs.c
> index 8df9afac8d81..318de969ae0f 100644
> --- a/arch/arm/mm/ptdump_debugfs.c
> +++ b/arch/arm/mm/ptdump_debugfs.c
> @@ -11,18 +11,7 @@ static int ptdump_show(struct seq_file *m, void *v)
>   	ptdump_walk_pgd(m, info);
>   	return 0;
>   }
> -
> -static int ptdump_open(struct inode *inode, struct file *file)
> -{
> -	return single_open(file, ptdump_show, inode->i_private);
> -}
> -
> -static const struct file_operations ptdump_fops = {
> -	.open		= ptdump_open,
> -	.read		= seq_read,
> -	.llseek		= seq_lseek,
> -	.release	= single_release,
> -};
> +DEFINE_SHOW_ATTRIBUTE(ptdump);
>   
>   void __init ptdump_debugfs_register(struct ptdump_info *info, const char *name)
>   {
>