From: Peter Zijlstra <a.p.zijlstra@chello.nl>
To: Ingo Molnar <mingo@elte.hu>
Cc: Linus Torvalds <torvalds@linux-foundation.org>,
"Ted Ts'o" <tytso@mit.edu>, Greg KH <greg@kroah.com>,
Thomas Gleixner <tglx@linutronix.de>,
akpm@linux-foundation.org,
linux-kernel <linux-kernel@vger.kernel.org>
Subject: Re: [RFC][PATCH 6/7] printk: Poke printk extra hard
Date: Thu, 22 Dec 2011 11:19:55 +0100 [thread overview]
Message-ID: <1324549195.24803.13.camel@twins> (raw)
In-Reply-To: <20111222101556.GA12976@elte.hu>
On Thu, 2011-12-22 at 11:15 +0100, Ingo Molnar wrote:
> * Peter Zijlstra <a.p.zijlstra@chello.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.
next prev parent reply other threads:[~2011-12-22 10:20 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-12-21 10:57 [RFC][PATCH 0/7] improve printk reliability Peter Zijlstra
2011-12-21 10:57 ` [RFC][PATCH 1/7] arch, early_printk: Consolidate early_printk() implementations Peter Zijlstra
2011-12-21 17:01 ` Mike Frysinger
2011-12-21 17:03 ` Peter Zijlstra
2011-12-21 19:23 ` David Miller
2011-12-21 10:57 ` [RFC][PATCH 2/7] lockdep: Provide early_printk() support Peter Zijlstra
2011-12-21 10:57 ` [RFC][PATCH 3/7] printk, lockdep: Remove lockdep_off() usage Peter Zijlstra
2011-12-21 10:57 ` [RFC][PATCH 4/7] printk: Rework printk recursion Peter Zijlstra
2011-12-21 10:57 ` [RFC][PATCH 5/7] semaphore: Pull wakeup out from under sem->lock Peter Zijlstra
2011-12-21 10:57 ` [RFC][PATCH 6/7] printk: Poke printk extra hard Peter Zijlstra
2011-12-22 1:17 ` Linus Torvalds
2011-12-22 7:02 ` Ingo Molnar
2011-12-22 8:43 ` Peter Zijlstra
2011-12-22 9:03 ` Ingo Molnar
2011-12-22 9:14 ` Peter Zijlstra
2011-12-22 10:15 ` Ingo Molnar
2011-12-22 10:19 ` Peter Zijlstra [this message]
2011-12-21 10:57 ` [RFC][PATCH 7/7] serial, 8250: Mostly avoid wakeups from under port->lock Peter Zijlstra
2011-12-21 16:03 ` Alan Cox
2011-12-21 16:22 ` Peter Zijlstra
2011-12-21 16:30 ` Peter Zijlstra
2011-12-21 18:51 ` Alan Cox
2011-12-21 11:23 ` [RFC][PATCH 0/7] improve printk reliability Peter Zijlstra
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