linux-kernel - Re: [PATCH v3] fs/pstore: provide panic data even in suspend

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Date:	Thu, 13 Aug 2015 10:53:05 -0700
From:	Joe Perches <joe@...ches.com>
To:	check.kernel@...il.com
Cc:	Petr Mladek <pmladek@...e.cz>, Alex Elder <elder@...aro.org>,
	Anton Vorontsov <anton@...msg.org>,
	Colin Cross <ccross@...roid.com>,
	Kees Cook <keescook@...omium.org>,
	Tony Luck <tony.luck@...el.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	"Luis R. Rodriguez" <mcgrof@...e.com>,
	Peter Hurley <peter@...leysoftware.com>,
	Tejun Heo <tj@...nel.org>, Ethan du <duhui@...omi.com>,
	Linghua Gu <gulinghua@...omi.com>,
	linux-kernel@...r.kernel.org,
	yangdongdong <yangdongdong@...omi.com>
Subject: Re: [PATCH v3] fs/pstore: provide panic data even in suspend

On Wed, 2015-08-12 at 11:45 +0800, check.kernel@...il.com wrote:
> From: yangdongdong <yangdongdong@...omi.com>
> 
> If system restart after panic, this patch also enables
> panic and oops messages which in suspend context to be
> logged into ramoops console buffer where it can be read
> back at some later point.

trivia:

> diff --git a/include/linux/pstore_ram.h b/include/linux/pstore_ram.h
[]
> @@ -52,6 +52,7 @@ struct persistent_ram_zone {
>  	size_t old_log_size;
>  };
>  
> +extern void emergency_unlock_console(void);

None of the other function prototypes in this file use extern.
This one shouldn't either.

>  struct persistent_ram_zone *persistent_ram_new(phys_addr_t start, size_t size,
>  			u32 sig, struct persistent_ram_ecc_info *ecc_info,
>  			unsigned int memtype);


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