linux-kernel - [PATCH 0/3] printk: Remove lockdep

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Message-Id: <20110609130647.937204592@chello.nl>
Date:	Thu, 09 Jun 2011 15:06:47 +0200
From:	Peter Zijlstra <a.p.zijlstra@...llo.nl>
To:	Linus Torvalds <torvalds@...ux-foundation.org>,
	Ingo Molnar <mingo@...e.hu>,
	Thomas Gleixner <tglx@...utronix.de>
Cc:	linux-kernel@...r.kernel.org, akpm@...ux-foundation.org,
	efault@....de, Arne Jansen <lists@...-jansens.de>
Subject: [PATCH 0/3] printk: Remove lockdep_off() and wakeups

These three patches rework printk() to remove the lockdep_off() hackery and
remove the need for printk() to do wakeups, which should make it much more
reliable in various contexts.

The first patch is already in -tip, the others are not. Ingo reported some
problems with #2, but I've been unable to reproduce so far.

The third patch has the semaphore trickery in and keeps it private to printk.c
as per Thomas' request.

A kernel with all three applied and lockdep enabled seems to have no problem
booting.

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