linux-kernel - Re: [RFC][PATCH 6/7] printk: Poke printk extra hard

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Message-ID: <1324549195.24803.13.camel@twins>
Date:	Thu, 22 Dec 2011 11:19:55 +0100
From:	Peter Zijlstra <a.p.zijlstra@...llo.nl>
To:	Ingo Molnar <mingo@...e.hu>
Cc:	Linus Torvalds <torvalds@...ux-foundation.org>,
	Ted Ts'o <tytso@....edu>, Greg KH <greg@...ah.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	akpm@...ux-foundation.org,
	linux-kernel <linux-kernel@...r.kernel.org>
Subject: Re: [RFC][PATCH 6/7] printk: Poke printk extra hard

On Thu, 2011-12-22 at 11:15 +0100, Ingo Molnar wrote:
> * Peter Zijlstra <a.p.zijlstra@...llo.nl> wrote:
> 
> > On Thu, 2011-12-22 at 10:03 +0100, Ingo Molnar wrote:
> > 
> > > Could be made part of the locking self-tests - that way it 
> > > does not add an extra config option! ;-)
> > 
> > Fair chance it will blow up and disable lockdep for pretty 
> > much every console implementation out there, except 8250serial 
> > when used in conjunction with all patches in this thread.
> 
> If it blows up without being fixed then it's not a good idea.

Right, and we can't fix them, its 'allowed'. I just wanted to make sure
I had the debug option so that I can debug my own serial consoles to
make sure they do behave nicely.

> > Maybe not the normal vga console, but I haven't tried on a 
> > machine that has a monitor attached yet (they're usually not 
> > on remote power switches and I'm too lazy to reach over and 
> > press reset).
> 
> The VGA console does not require a monitor attached.

Ah, right, I could just add it to the console list together with the
serial thing.
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