linux-kernel - Re: [PATCH 10/10] csky/vdso: Use generic union vdso_data

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Message-ID: <CAJF2gTRtNJUw6rr0w2xR5gNMw6ab8diTq-h-bX8HcaX5qbmoVQ@mail.gmail.com>
Date: Tue, 20 Feb 2024 09:13:10 +0800
From: Guo Ren <guoren@...nel.org>
To: Anna-Maria Behnsen <anna-maria@...utronix.de>
Cc: linux-kernel@...r.kernel.org, Andy Lutomirski <luto@...nel.org>, 
	Thomas Gleixner <tglx@...utronix.de>, Vincenzo Frascino <vincenzo.frascino@....com>, 
	linux-csky@...r.kernel.org
Subject: Re: [PATCH 10/10] csky/vdso: Use generic union vdso_data_store

On Mon, Feb 19, 2024 at 11:40 PM Anna-Maria Behnsen
<anna-maria@...utronix.de> wrote:
>
> There is already a generic union definition for vdso_data_store in vdso
> datapage header.
>
> Use this definition to prevent code duplication.
>
> Signed-off-by: Anna-Maria Behnsen <anna-maria@...utronix.de>
> Cc: Guo Ren <guoren@...nel.org>
> Cc: linux-csky@...r.kernel.org
> ---
>  arch/csky/kernel/vdso.c | 10 ++--------
>  1 file changed, 2 insertions(+), 8 deletions(-)
>
> diff --git a/arch/csky/kernel/vdso.c b/arch/csky/kernel/vdso.c
> index e74a2504d331..2ca886e4a458 100644
> --- a/arch/csky/kernel/vdso.c
> +++ b/arch/csky/kernel/vdso.c
> @@ -15,14 +15,8 @@ extern char vdso_start[], vdso_end[];
>  static unsigned int vdso_pages;
>  static struct page **vdso_pagelist;
>
> -/*
> - * The vDSO data page.
> - */
> -static union {
> -       struct vdso_data        data;
> -       u8                      page[PAGE_SIZE];
> -} vdso_data_store __page_aligned_data;
> -struct vdso_data *vdso_data = &vdso_data_store.data;
> +static union vdso_data_store vdso_data_store __page_aligned_data;
> +struct vdso_data *vdso_data = vdso_data_store.data;
>
>  static int __init vdso_init(void)
>  {
> --
> 2.39.2
>

Acked-by: Guo Ren <guoren@...nel.org>

-- 
Best Regards
 Guo Ren