linux-kernel - Purpose of numa

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Message-ID: <47A11ACD.1090400@redhat.com>
Date:	Wed, 30 Jan 2008 19:48:13 -0500
From:	Chris Snook <csnook@...hat.com>
To:	linux-kernel@...r.kernel.org
Subject: Purpose of numa_node?

While pondering ways to optimize I/O and swapping on large NUMA machines, I 
noticed that the numa_node field in struct device isn't actually used anywhere. 
  We just have a couple dozen lines of code to conditionally create a sysfs file 
that will always return -1.  Is anyone even working on code to actually use this 
field?  I think it's a good piece of information to keep track of, so I'm not 
suggesting we remove it, but I want to make sure I'm not stepping on toes or 
duplicating effort if I try to make it useful.

	-- Chris
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