linux-kernel - Re: [PATCH]: mce: don't print "human readable" message for corrected errors

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Message-ID: <20110413030033.GB31652@sgi.com>
Date:	Tue, 12 Apr 2011 22:00:34 -0500
From:	Russ Anderson <rja@....com>
To:	Borislav Petkov <bp@...en8.de>,
	Prarit Bhargava <prarit@...hat.com>,
	"Luck, Tony" <tony.luck@...el.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"dzickus@...hat.com" <dzickus@...hat.com>,
	"mstowe@...hat.com" <mstowe@...hat.com>,
	"dnelson@...hat.com" <dnelson@...hat.com>
Cc:	rja@...ricas.sgi.com
Subject: Re: [PATCH]: mce: don't print "human readable" message for corrected errors

On Tue, Apr 12, 2011 at 10:28:54PM +0200, Borislav Petkov wrote:
> 
> Yeah, there's the TAINT thing too, good point Tony. Well, we definitely
> don't want to get tainted for correctable errors - they're too "normal"
> to do so, IMHO.

I agreed.

> I'm thinking remove the TAINT for CEs and don't call the default
> notifier if it is the only notifier call registered. Maybe something like
> 
> 	if (num_notifiers(&x86_mce_decoder_chain) > 1)
> 		atomic_notifier_call_chain(&x86_mce_decoder_chain, 0, &m);
> 
> or since the notifiers are priority sorted, don't call notifiers with -1
> prio.
> 
> Or something to that effect.

What is the point of having a default notifier if it doesn't get called?

Any consideration of adding thresholding (ie only log the first X number
of corrected errors) as is done on IA64?  (see arch/ia64/kernel/mca.c)

Thanks,
-- 
Russ Anderson, OS RAS/Partitioning Project Lead  
SGI - Silicon Graphics Inc          rja@....com
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