linux-kernel - Re: [RFC PATCH] ppc: don't override CONFIG_PPC_PSERIES

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Date:	Fri, 15 Oct 2010 11:29:59 +1100
From:	Michael Ellerman <michael@...erman.id.au>
To:	Nishanth Aravamudan <nacc@...ibm.com>
Cc:	Michael Neuling <mikey@...ling.org>, Frans Pop <elendil@...net.nl>,
	linux-kernel@...r.kernel.org, Paul Mackerras <paulus@...ba.org>,
	Anton Blanchard <anton@...ba.org>,
	Linas Vepstas <linasvepstas@...il.com>,
	linuxppc-dev@...ts.ozlabs.org, Thomas Gleixner <tglx@...utronix.de>
Subject: Re: [RFC PATCH] ppc: don't override CONFIG_PPC_PSERIES_DEBUG

On Thu, 2010-10-14 at 17:23 -0700, Nishanth Aravamudan wrote:
> On 15.10.2010 [11:14:23 +1100], Michael Ellerman wrote:
> > On Thu, 2010-10-14 at 10:48 -0700, Nishanth Aravamudan wrote:
> > > Because the lpar and pci_dlpar code is pretty low-level & verbose,
> > > perhaps it makes sense to add another Kconfig variable for really
> > > low-level stuff? But it's annoying to have DEBUG *somewhat* effective,
> > > especially in the EEH area when doing PCI stuff.
> > 
> > I really don't think you want to enable the lpar debug by default.
> > Have you tried it? It can make for a pretty unusable system, just
> > because of the console spam.
> 
> Yeah, you're right. After enabling it, I had to kill my boot and start
> over w/o the lpar DEBUG on. 

:)

> I assume dlpar_pci is similar?

That should be OK to enable I think. Suck it and see I guess.

> I dunno, would a patch to a least remove the EEH one be ok? Seems like
> it isn't super-verbose, and does have some handy output.

Yeah definitely. That undef was merged as part of a cleanup/fix patch
but shouldn't have been.

cheers



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