linux-kernel - Re: [PATCH 1/2] ARM: dump: Convert to use DEFINE_SHOW

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Date:   Thu, 27 Dec 2018 22:56:10 +0800
From:   Donglin Peng <dolinux.peng@...il.com>
To:     catalin.marinas@....com, will.deacon@....com
Cc:     linux-arm-kernel@...ts.infradead.org,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 1/2] ARM: dump: Convert to use DEFINE_SHOW_ATTRIBUTE macro

On Wed, Jun 13, 2018 at 9:15 AM Peng Donglin <dolinux.peng@...il.com> wrote:
>
> Use DEFINE_SHOW_ATTRIBUTE macro to simplify the code.
>
> Signed-off-by: Peng Donglin <dolinux.peng@...il.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 be8d87b..79002fe 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);
>
>  int ptdump_debugfs_register(struct ptdump_info *info, const char *name)
>  {
> --
> 2.7.4
>

any suggestion?