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From: Qianqiang Liu <qianqiang.liu@163.com>
To: Jinchao Wang <wangjinchao600@gmail.com>
Cc: pmladek@suse.com, akpm@linux-foundation.org,
	"Simona Vetter" <simona@ffwll.ch>, "Helge Deller" <deller@gmx.de>,
	"Thomas Zimmermann" <tzimmermann@suse.de>,
	"Ville Syrjälä" <ville.syrjala@linux.intel.com>,
	"Shixiong Ou" <oushixiong@kylinos.cn>,
	"Sravan Kumar Gundu" <sravankumarlpu@gmail.com>,
	"Zsolt Kajtar" <soci@c64.rulez.org>,
	"Kees Cook" <kees@kernel.org>,
	linux-kernel@vger.kernel.org, feng.tang@linux.alibaba.com,
	joel.granados@kernel.org, john.ogness@linutronix.de,
	namcao@linutronix.de, linux-fbdev@vger.kernel.org,
	dri-devel@lists.freedesktop.org
Subject: Re: [PATCH 2/9] fbdev: Use panic_in_progress() helper
Date: Wed, 20 Aug 2025 18:44:27 +0800	[thread overview]
Message-ID: <aKWnC4N8d4lBPrNi@debian.debian.local> (raw)
In-Reply-To: <20250820091702.512524-3-wangjinchao600@gmail.com>

On Wed, Aug 20, 2025 at 05:14:47PM +0800, Jinchao Wang wrote:
> This patch updates the fbcon_skip_panic() function to use
> the panic_in_progress() helper.
> 
> The previous direct access to panic_cpu is less
> readable and is being replaced by a dedicated function
> that more clearly expresses the intent.
> 
> This change is part of a series to refactor the kernel's
> panic handling logic for better clarity and robustness.
> 
> Signed-off-by: Jinchao Wang <wangjinchao600@gmail.com>
> ---
>  drivers/video/fbdev/core/fbcon.c | 9 +--------
>  1 file changed, 1 insertion(+), 8 deletions(-)
> 
> diff --git a/drivers/video/fbdev/core/fbcon.c b/drivers/video/fbdev/core/fbcon.c
> index 55f5731e94c3..b062b05f4128 100644
> --- a/drivers/video/fbdev/core/fbcon.c
> +++ b/drivers/video/fbdev/core/fbcon.c
> @@ -279,14 +279,7 @@ static int fbcon_get_rotate(struct fb_info *info)
>  
>  static bool fbcon_skip_panic(struct fb_info *info)
>  {
> -/* panic_cpu is not exported, and can't be used if built as module. Use
> - * oops_in_progress instead, but non-fatal oops won't be printed.
> - */
> -#if defined(MODULE)
> -	return (info->skip_panic && unlikely(oops_in_progress));
> -#else
> -	return (info->skip_panic && unlikely(atomic_read(&panic_cpu) != PANIC_CPU_INVALID));
> -#endif
> +	return (info->skip_panic && unlikely(panic_in_progress()));
>  }
>  
>  static inline bool fbcon_is_active(struct vc_data *vc, struct fb_info *info)
> -- 
> 2.43.0

Acked-by Qianqiang Liu <qianqiang.liu@163.com>

-- 
Best,
Qianqiang Liu


      parent reply	other threads:[~2025-08-20 10:45 UTC|newest]

Thread overview: 20+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-08-20  9:14 [PATCH 0/9] panic: introduce panic status function family Jinchao Wang
2025-08-20  9:14 ` [PATCH 1/9] panic: Introduce helper functions for panic state Jinchao Wang
2025-08-20  9:14   ` [PATCH 2/9] fbdev: Use panic_in_progress() helper Jinchao Wang
2025-08-20  9:14     ` [PATCH 3/9] crash_core: use panic_try_start() in crash_kexec() Jinchao Wang
2025-08-20  9:14       ` [PATCH 4/9] panic: use panic_try_start() in nmi_panic() Jinchao Wang
2025-08-20  9:14         ` [PATCH 5/9] panic: use panic_try_start() in vpanic() Jinchao Wang
2025-08-20  9:14           ` [PATCH 6/9] printk/nbcon: use panic_on_this_cpu() helper Jinchao Wang
2025-08-20  9:14             ` [PATCH 7/9] panic/printk: replace this_cpu_in_panic() with panic_on_this_cpu() Jinchao Wang
2025-08-20  9:14               ` [PATCH 8/9] panic/printk: replace other_cpu_in_panic() with panic_on_other_cpu() Jinchao Wang
2025-08-20  9:14                 ` [PATCH 9/9] watchdog: skip checks when panic is in progress Jinchao Wang
2025-08-20 15:18                   ` Yury Norov
2025-08-21  1:29                     ` Jinchao Wang
2025-08-25 10:05                 ` [PATCH 8/9] panic/printk: replace other_cpu_in_panic() with panic_on_other_cpu() John Ogness
2025-08-25  9:53             ` [PATCH 6/9] printk/nbcon: use panic_on_this_cpu() helper John Ogness
2025-08-26  0:58               ` Jinchao Wang
2025-08-20 13:35       ` [PATCH 3/9] crash_core: use panic_try_start() in crash_kexec() Baoquan He
2025-08-20 13:43         ` Baoquan He
2025-08-21  2:43       ` Baoquan He
2025-08-21  3:41         ` Jinchao Wang
2025-08-20 10:44     ` Qianqiang Liu [this message]

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