linux-kernel - Re: [PATCH 03/20] x86, mce: Add persistent MCE event

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Date:	Wed, 10 Nov 2010 16:15:47 -0500
From:	Ben Gamari <bgamari@...il.com>
To:	Borislav Petkov <bp@...64.org>, acme@...radead.org,
	fweisbec@...il.com, mingo@...e.hu, peterz@...radead.org,
	rostedt@...dmis.org
Cc:	linux-kernel@...r.kernel.org,
	Borislav Petkov <borislav.petkov@....com>
Subject: Re: [PATCH 03/20] x86, mce: Add persistent MCE event

On Thu,  4 Nov 2010 16:36:39 +0100, Borislav Petkov <bp@...64.org> wrote:
> From: Borislav Petkov <borislav.petkov@....com>
> 
> Add the necessary glue to enable the mce_record tracepoint on boot
> turning it into a persistent event. This exports the MCE buffer
> read-only to a userspace daemon which will hook into it through debugfs
> when booting is finished.
> 
While MCE technically is a diagnostics service, do we want to start
adding dependencies on debugfs in long-running, common-place daemons? I
was under the impression we were to avoid using debugfs for anything
other than values for one-off debugging.

Cheers,

- Ben
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