From: Tony Luck <tony.luck@intel.com>
Date: Fri, 8 Jan 2010 00:10:57 +0000 (-0800)
Subject: [IA64] __per_cpu_idtrs[] is a memory hog
X-Git-Tag: v2.6.33-rc4~74^2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=6c57a332901f851bd092aba7a2b4d8ef4e643829;p=pandora-kernel.git

[IA64] __per_cpu_idtrs[] is a memory hog

__per_cpu_idtrs is statically allocated ... on CONFIG_NR_CPUS=4096
systems it hogs 16MB of memory. This is way too much for a quite
probably unused facility (only KVM uses dynamic TR registers).

Change to an array of pointers, and allocate entries as needed on
a per cpu basis.  Change the name too as the __per_cpu_ prefix is
confusing (this isn't a classic <linux/percpu.h> type object).

Signed-off-by: Tony Luck <tony.luck@intel.com>
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