linux-kernel - Re: [PATCH 2/2] kmsg_dump: adding to reboot, halt, poweroff and emergency

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Message-Id: <20101123175450.7BCE.A69D9226@jp.fujitsu.com>
Date:	Tue, 23 Nov 2010 17:58:04 +0900 (JST)
From:	KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>
To:	Seiji Aguchi <seiji.aguchi@....com>
Cc:	kosaki.motohiro@...fujitsu.com,
	Andrew Morton <akpm@...ux-foundation.org>,
	"Artem.Bityutskiy@...ia.com" <Artem.Bityutskiy@...ia.com>,
	"simon.kagstrom@...insight.net" <simon.kagstrom@...insight.net>,
	"David.Woodhouse@...el.com" <David.Woodhouse@...el.com>,
	"anders.grafstrom@...insight.net" <anders.grafstrom@...insight.net>,
	"jason.wessel@...driver.com" <jason.wessel@...driver.com>,
	"jslaby@...e.cz" <jslaby@...e.cz>,
	"jmorris@...ei.org" <jmorris@...ei.org>,
	"eparis@...hat.com" <eparis@...hat.com>, "hch@....de" <hch@....de>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"kyungmin.park@...sung.com" <kyungmin.park@...sung.com>,
	"marco.stornelli@...il.com" <marco.stornelli@...il.com>,
	"namhyung@...il.com" <namhyung@...il.com>,
	Aaron Durbin <adurbin@...gle.com>,
	"randy.dunlap@...cle.com" <randy.dunlap@...cle.com>,
	"dle-develop@...ts.sourceforge.net" 
	<dle-develop@...ts.sourceforge.net>,
	Satoru Moriya <satoru.moriya@....com>
Subject: Re: [PATCH 2/2] kmsg_dump: adding to reboot, halt, poweroff and emergency_restart path

>  We need to know the reason why system rebooted in support service.
>  However, we can't inform our customers of the reason because
>  final messages are lost on current Linux kernel.
>  
>  This patch improves the situation above because the final messages 
>  are saved by adding kmsg_dump() to reboot, halt, poweroff and 
>  emergency_restart path.
> 
>  Signed-off-by: Seiji Aguchi <seiji.aguchi@....com>

This patch doesn't have any notification consumer. It's too bad.
As far as I know, some poeple are now discussing to make generic
firmware access interface. perhaps your one can be integrate it.
Please see and join following discussion.


From: "Luck, Tony" <tony.luck@...el.com>
Subject: [RFC] persistent store



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