linux-kernel - Re: [PATCH 3/4] kgdb: Respect that flush op is optional

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Message-ID: <4F63362E.1090701@windriver.com>
Date:	Fri, 16 Mar 2012 07:46:38 -0500
From:	Jason Wessel <jason.wessel@...driver.com>
To:	Jan Kiszka <jan.kiszka@...mens.com>
CC:	<linux-kernel@...r.kernel.org>,
	<kgdb-bugreport@...ts.sourceforge.net>
Subject: Re: [PATCH 3/4] kgdb: Respect that flush op is optional

On 03/16/2012 07:17 AM, Jan Kiszka wrote:
> Not all kgdb I/O drivers implement a flush operation. Adjust
> gdbstub_exit accordingly.

The flush is certainly optional.  The reason we never saw this bug is because it was only used by some code not in the mainline, where it is in fact patched.  The out of tree patch hooked into the reboot notifier.

It makes me wonder if using the reboot notifier is enough vs the call backs you placed in the critical power off points in your patch [4/4].   I'll respond separately to that thread because there are other folks in the CC line.

If we decide to roll with this series, I will definitely merge this patch, else I will remove the code since it is not used except for out of tree patches.

Thanks,
Jason.

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