[PATCH] Summit: config options and hooks

This just adds the config option for summit, and it's Config.help entry,
puts the hooks for the new mach_apic.h subarch file into the right
places, and creates empty shells of the header files.

arch/i386/Config.help

@@ -73,6 +73,12 @@ CONFIG_X86_CYCLONE
   If you are suffering from time skew using a multi-CEC system, say YES.
   Otherwise it is safe to say NO.
 
+CONFIG_X86_SUMMIT
+  This option is needed for IBM systems that use the Summit/EXA chipset.
+  In particular, it is needed for the x440.
+
+  If you don't have one of these computers, you should say N here.
+
 CONFIG_X86_UP_IOAPIC
   An IO-APIC (I/O Advanced Programmable Interrupt Controller) is an
   SMP-capable replacement for PC-style interrupt controllers. Most

arch/i386/config.in

@@ -172,7 +172,8 @@ else
   if [ "$CONFIG_X86_NUMA" = "y" ]; then
      #Platform Choices
      bool 'Multiquad (IBM/Sequent) NUMAQ support' CONFIG_X86_NUMAQ
-     if [ "$CONFIG_X86_NUMAQ" = "y" ]; then
+     bool 'IBM x440 (Summit/EXA) support' CONFIG_X86_SUMMIT
+     if [ "$CONFIG_X86_NUMAQ" = "y" -o "$CONFIG_X86_SUMMIT" = "y" ]; then
         define_bool CONFIG_CLUSTERED_APIC y
      fi
      # Common NUMA Features

arch/i386/kernel/apic.c

@@ -31,6 +31,7 @@
 #include <asm/pgalloc.h>
 #include <asm/desc.h>
 #include <asm/arch_hooks.h>
+#include "mach_apic.h"
 
 void __init apic_intr_init(void)
 {

arch/i386/kernel/io_apic.c

@@ -35,6 +35,7 @@
 #include <asm/io.h>
 #include <asm/smp.h>
 #include <asm/desc.h>
+#include "mach_apic.h"
 
 #undef APIC_LOCKUP_DEBUG
 

arch/i386/mach-generic/mach_apic.h

+#ifndef __ASM_MACH_APIC_H
+#define __ASM_MACH_APIC_H
+
+#endif /* __ASM_MACH_APIC_H */

arch/i386/mach-summit/mach_apic.h

+#ifndef __ASM_MACH_APIC_H
+#define __ASM_MACH_APIC_H
+
+#endif /* __ASM_MACH_APIC_H */