[PATCH] [34/45] i386: no need to make enable_cpu_hotplug a variable

Andi Kleen
2007-09-21T20:56:23Z

From: Adrian Bunk <bunk@stusta.de>

As long as there's no write access to this variable there's no reason to let
gcc check it at runtime.

Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Andi Kleen <ak@suse.de>
Cc: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

arch/i386/kernel/topology.c | 2 --
include/asm-i386/cpu.h | 2 +-
2 files changed, 1 insertion(+), 3 deletions(-)

Index: linux/arch/i386/kernel/topology.c
===================================================================
--- linux.orig/arch/i386/kernel/topology.c
+++ linux/arch/i386/kernel/topology.c
@@ -51,8 +51,6 @@ int arch_register_cpu(int num)
}

#ifdef CONFIG_HOTPLUG_CPU
-int enable_cpu_hotplug = 1;
-
void arch_unregister_cpu(int num) {
return unregister_cpu(&cpu_devices[num].cpu);
}
Index: linux/include/asm-i386/cpu.h
===================================================================
--- linux.orig/include/asm-i386/cpu.h
+++ linux/include/asm-i386/cpu.h
@@ -13,7 +13,7 @@ struct i386_cpu {
extern int arch_register_cpu(int num);
#ifdef CONFIG_HOTPLUG_CPU
extern void arch_unregister_cpu(int);
-extern int enable_cpu_hotplug;
+#define enable_cpu_hotplug 1
#else
#define enable_cpu_hotplug 0
#endif