From: "Andi Kleen" <ak@suse.de>

Minor cleanup.

Move things into their include files, remove obsolete includes, fix
indentation, remove obsolete special cases etc.

I also added the per cpu section to asm-generic/sections.h and fixed
init/main.c to use it.

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
---

 arch/x86_64/kernel/setup64.c   |   18 ++++--------------
 include/asm-generic/sections.h |    1 +
 include/asm-x86_64/desc.h      |    1 +
 init/main.c                    |    3 +--
 4 files changed, 7 insertions(+), 16 deletions(-)

diff -puN arch/x86_64/kernel/setup64.c~x86_64-some-cleanup-in-setup64c arch/x86_64/kernel/setup64.c
--- devel/arch/x86_64/kernel/setup64.c~x86_64-some-cleanup-in-setup64c	2005-07-27 12:36:13.000000000 -0700
+++ devel-akpm/arch/x86_64/kernel/setup64.c	2005-07-27 12:36:13.000000000 -0700
@@ -12,6 +12,7 @@
 #include <linux/string.h>
 #include <linux/bootmem.h>
 #include <linux/bitops.h>
+#include <linux/module.h>
 #include <asm/bootsetup.h>
 #include <asm/pda.h>
 #include <asm/pgtable.h>
@@ -22,10 +23,8 @@
 #include <asm/smp.h>
 #include <asm/i387.h>
 #include <asm/percpu.h>
-#include <asm/mtrr.h>
 #include <asm/proto.h>
-#include <asm/mman.h>
-#include <asm/numa.h>
+#include <asm/sections.h>
 
 char x86_boot_params[BOOT_PARAM_SIZE] __initdata = {0,};
 
@@ -33,11 +32,6 @@ cpumask_t cpu_initialized __cpuinitdata 
 
 struct x8664_pda cpu_pda[NR_CPUS] __cacheline_aligned; 
 
-extern struct task_struct init_task;
-
-extern unsigned char __per_cpu_start[], __per_cpu_end[]; 
-
-extern struct desc_ptr cpu_gdt_descr[];
 struct desc_ptr idt_descr = { 256 * 16, (unsigned long) idt_table }; 
 
 char boot_cpu_stack[IRQSTACKSIZE] __attribute__((section(".bss.page_aligned")));
@@ -101,7 +95,7 @@ void __init setup_per_cpu_areas(void)
 #endif
 
 	for (i = 0; i < NR_CPUS; i++) { 
-		unsigned char *ptr;
+		char *ptr;
 
 		if (!NODE_DATA(cpu_to_node(i))) {
 			printk("cpu with no node %d, num_online_nodes %d\n",
@@ -190,11 +184,7 @@ void __cpuinit check_efer(void)
  */
 void __cpuinit cpu_init (void)
 {
-#ifdef CONFIG_SMP
 	int cpu = stack_smp_processor_id();
-#else
-	int cpu = smp_processor_id();
-#endif
 	struct tss_struct *t = &per_cpu(init_tss, cpu);
 	unsigned long v; 
 	char *estacks = NULL; 
@@ -214,7 +204,7 @@ void __cpuinit cpu_init (void)
 
 	printk("Initializing CPU#%d\n", cpu);
 
-		clear_in_cr4(X86_CR4_VME|X86_CR4_PVI|X86_CR4_TSD|X86_CR4_DE);
+	clear_in_cr4(X86_CR4_VME|X86_CR4_PVI|X86_CR4_TSD|X86_CR4_DE);
 
 	/*
 	 * Initialize the per-CPU GDT with the boot GDT,
diff -puN include/asm-generic/sections.h~x86_64-some-cleanup-in-setup64c include/asm-generic/sections.h
--- devel/include/asm-generic/sections.h~x86_64-some-cleanup-in-setup64c	2005-07-27 12:36:13.000000000 -0700
+++ devel-akpm/include/asm-generic/sections.h	2005-07-27 12:36:13.000000000 -0700
@@ -11,5 +11,6 @@ extern char _sinittext[], _einittext[];
 extern char _sextratext[] __attribute__((weak));
 extern char _eextratext[] __attribute__((weak));
 extern char _end[];
+extern char __per_cpu_start[], __per_cpu_end[];
 
 #endif /* _ASM_GENERIC_SECTIONS_H_ */
diff -puN include/asm-x86_64/desc.h~x86_64-some-cleanup-in-setup64c include/asm-x86_64/desc.h
--- devel/include/asm-x86_64/desc.h~x86_64-some-cleanup-in-setup64c	2005-07-27 12:36:13.000000000 -0700
+++ devel-akpm/include/asm-x86_64/desc.h	2005-07-27 12:36:13.000000000 -0700
@@ -75,6 +75,7 @@ struct desc_ptr {
  */
 extern struct desc_struct default_ldt[];
 extern struct gate_struct idt_table[]; 
+extern struct desc_ptr cpu_gdt_descr[];
 
 static inline void _set_gate(void *adr, unsigned type, unsigned long func, unsigned dpl, unsigned ist)  
 {
diff -puN init/main.c~x86_64-some-cleanup-in-setup64c init/main.c
--- devel/init/main.c~x86_64-some-cleanup-in-setup64c	2005-07-27 12:36:13.000000000 -0700
+++ devel-akpm/init/main.c	2005-07-27 12:36:13.000000000 -0700
@@ -51,6 +51,7 @@
 #include <asm/io.h>
 #include <asm/bugs.h>
 #include <asm/setup.h>
+#include <asm/sections.h>
 
 /*
  * This is one of the first .c files built. Error out early
@@ -323,8 +324,6 @@ static void __init setup_per_cpu_areas(v
 {
 	unsigned long size, i;
 	char *ptr;
-	/* Created by linker magic */
-	extern char __per_cpu_start[], __per_cpu_end[];
 
 	/* Copy section for each CPU (we discard the original) */
 	size = ALIGN(__per_cpu_end - __per_cpu_start, SMP_CACHE_BYTES);
_