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

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Message-ID: <17090.1292842179@redhat.com>
Date:	Mon, 20 Dec 2010 10:49:39 +0000
From:	David Howells <dhowells@...hat.com>
To:	Tony Luck <tony.luck@...el.com>
Cc:	dhowells@...hat.com, Borislav Petkov <bp@...en8.de>,
	Tony Luck <tony.luck@...il.com>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	"H. Peter Anvin" <hpa@...or.com>, 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,
	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>
Subject: Re: [concept & "good taste" review] persistent store

Tony Luck <tony.luck@...el.com> wrote:

> I'm not sure how big the store is on my system ... the ACPI/ERST
> interface on this machine limits each entry to just under 8KB. But
> that isn't inherent to to ERST, both larger and smaller values would
> be an option. 8K seems quite useful for kmsg_dump purposes as
> it grabs a significant number of lines leading up to the oops/panic.

How are things written to the store?  Is it a record-based affair?

David
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