linux-kernel - [RFC] Circular include dependencies

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Message-ID: <20080523132034.GB15384@flint.arm.linux.org.uk>
Date:	Fri, 23 May 2008 14:20:34 +0100
From:	Russell King <rmk+lkml@....linux.org.uk>
To:	Linux Kernel List <linux-kernel@...r.kernel.org>
Subject: [RFC] Circular include dependencies

Hi,

Having discovered some circular include dependencies in the ARM header
files which were causing build issues, I created a script to walk ARM
includes and report any similar issues found - which includes traversing
any referenced linux/ includes.

It identified the following two in include/linux/:

  linux/mmzone.h <- linux/memory_hotplug.h <- linux/mmzone.h
  linux/mmzone.h <- linux/topology.h <- linux/mmzone.h

Checking them by hand reveals that these are real.  Whether they're
capable of causing a problem or not, I'm not going to comment on.
However, they're not a good idea and someone should probably look at
resolving the loops.

-- 
Russell King
 Linux kernel    2.6 ARM Linux   - http://www.arm.linux.org.uk/
 maintainer of:
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