linux-kernel - Re: [concept & "good taste" review] persistent store

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Message-ID: <AANLkTim3OpjPysjdCLDuFgFOipmcxyr2ay5cvUAu5PHi@mail.gmail.com>
Date:	Thu, 16 Dec 2010 22:28:35 -0800
From:	Tony Luck <tony.luck@...il.com>
To:	Linus Torvalds <torvalds@...ux-foundation.org>
Cc:	linux-kernel@...r.kernel.org, linux-arch@...r.kernel.org,
	tglx@...utronix.de, mingo@...e.hu, greg@...ah.com,
	akpm@...ux-foundation.org, ying.huang@...el.com,
	Borislav Petkov <bp@...en8.de>,
	David Miller <davem@...emloft.net>,
	Alan Cox <alan@...rguk.ukuu.org.uk>,
	Jim Keniston <jkenisto@...ux.vnet.ibm.com>,
	Kyungmin Park <kmpark@...radead.org>,
	Geert Uytterhoeven <geert@...ux-m68k.org>,
	"H. Peter Anvin" <hpa@...or.com>
Subject: Re: [concept & "good taste" review] persistent store

On Thu, Dec 16, 2010 at 5:57 PM, Linus Torvalds
<torvalds@...ux-foundation.org> wrote:
> Then I hit the
>
>        /* Don't dump oopses to persistent store */
>        if (reason == KMSG_DUMP_OOPS)
>                return;
>
> and I'm like "ok, this is just stupid".
>
> The _only_ valid reason for persistent storage is for things like
> oopses that kill the machine.

Maybe I misunderstood what "KMSG_DUMP_OOPS" meant ... it
looked to me like this code is used for non-fatal OOPsen - ones
that will be logged to /var/log/messages.

You are right that the whole point of this is to save data from
fatal errors ... if I'm not doing that, then I'm happy to change
things until I achieve that goal.

-Tony
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