linux-kernel - Re: [announce] "kill the Big Kernel Lock (BKL)" tree

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Message-ID: <20080514224600.5bb5db5c@core>
Date:	Wed, 14 May 2008 22:46:00 +0100
From:	Alan Cox <alan@...rguk.ukuu.org.uk>
To:	Ingo Molnar <mingo@...e.hu>
Cc:	linux-kernel@...r.kernel.org,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Thomas Gleixner <tglx@...utronix.de>,
	Alexander Viro <viro@....linux.org.uk>
Subject: Re: [announce] "kill the Big Kernel Lock (BKL)" tree

Out of amusement I took the watchdog drivers and started looking for
large cans of worms in the BKL drop arena.

Here is a fun one for general discussion - right now driver probe
functions request resources. We have no ordering on the requests so we
have deadlocks if two drivers do resource requests for conflicting
resources in reverse order.

"Discuss"

Alan
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