From: Alan Cox <alan@lxorguk.ukuu.org.uk>
To: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>, Greg KH <greg@kroah.com>,
"Theodore Ts'o" <tytso@mit.edu>,
linux-kernel <linux-kernel@vger.kernel.org>,
Ingo Molnar <mingo@elte.hu>
Subject: Re: printk() vs tty_io
Date: Wed, 14 Dec 2011 10:43:08 +0000 [thread overview]
Message-ID: <20111214104308.14d0500c@pyramind.ukuu.org.uk> (raw)
In-Reply-To: <CA+55aFxNWiRQ1CkifhgcnnBqBa-xRNdM9Ze6bnxhsYd4ZYPg6A@mail.gmail.com>
On Tue, 13 Dec 2011 15:52:35 -0800
Linus Torvalds <torvalds@linux-foundation.org> wrote:
> On Tue, Dec 13, 2011 at 11:33 AM, Peter Zijlstra <peterz@infradead.org> wrote:
> >
> > I've been poking at reducing the constraints on printk(), like make it
> > work under rq->lock etc..
>
> You aren't supposed register a console that wakes things up. But the
> only console that honors that afaik is the traditional vt console.
> *Maybe* the network console, I didn't check.
Serial console tries to be good as does netconsole. Serial USB console
can't so just does its best.
Not sure about some of the DRM framebuffer ones either.
next prev parent reply other threads:[~2011-12-14 10:42 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-12-13 19:33 Peter Zijlstra
2011-12-13 23:52 ` Linus Torvalds
2011-12-14 9:38 ` Peter Zijlstra
2011-12-14 10:43 ` Alan Cox [this message]
2011-12-14 10:56 ` Peter Zijlstra
2011-12-14 14:05 ` Ted Ts'o
2011-12-14 14:23 ` Peter Zijlstra
2011-12-14 15:54 ` Linus Torvalds
2011-12-15 9:56 ` Peter Zijlstra
2011-12-15 10:32 ` Alan Cox
2011-12-15 10:55 ` Peter Zijlstra
2011-12-15 17:08 ` Linus Torvalds
2011-12-15 18:07 ` Ingo Molnar
2011-12-15 21:22 ` Alan Cox
2011-12-16 13:25 ` Peter Zijlstra
2011-12-15 19:02 ` Greg KH
2011-12-14 6:59 ` Ingo Molnar
2011-12-14 9:40 ` [PATCH] arch, early_printk: Consolidate early_printk() implementations Peter Zijlstra
2011-12-14 9:41 ` [PATCH] lockdep: Enable earlyprintk output Peter Zijlstra
2011-12-14 9:43 ` printk() vs tty_io Peter Zijlstra
2011-12-14 9:46 ` Ingo Molnar
2011-12-21 12:03 ` Stijn Devriendt
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