From: Mike Travis <travis@sgi.com>
Date: Sun, 11 Jan 2009 06:24:07 +0000 (-0800)
Subject: irq: initialize nr_irqs based on nr_cpu_ids
X-Git-Tag: v2.6.30-rc1~3^2~6^2~30
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=9332fccdedf8e09448f3b69b624211ae879f6c45;p=pandora-kernel.git

irq: initialize nr_irqs based on nr_cpu_ids

Impact: Reduce memory usage.

This is the second half of the changes to make the irq_desc_ptrs be
variable sized based on nr_cpu_ids.  This is done by adding a new
"max_nr_irqs" macro to irq_vectors.h (and a dummy in irqnr.h) to
return a max NR_IRQS value based on NR_CPUS or nr_cpu_ids.

This necessitated moving the define of MAX_IO_APICS to a separate
file (asm/apicnum.h) so it could be included without the baggage
of the other asm/apicdef.h declarations.

Signed-off-by: Mike Travis <travis@sgi.com>
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