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authorAdrian Bunk <bunk@stusta.de>2007-10-17 18:04:38 +0200
committerThomas Gleixner <tglx@inhelltoy.tec.linutronix.de>2007-10-17 20:16:16 +0200
commita850cef77f148c2e305022a1ed86ca6cff5ee300 (patch)
tree4bae5d03aabdfa5f3a96a38c885cc943df8bb1b4
parentfb7ae26df0b1218b39049b659064d57b58616c94 (diff)
i386: no need to make enable_cpu_hotplug a variable
As long as there's no write access to this variable there's no reason to let gcc check it at runtime. [ tglx: arch/x86 adaptation ] Signed-off-by: Adrian Bunk <bunk@stusta.de> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
-rw-r--r--arch/x86/kernel/topology.c6
-rw-r--r--include/asm-x86/cpu.h3
2 files changed, 3 insertions, 6 deletions
diff --git a/arch/x86/kernel/topology.c b/arch/x86/kernel/topology.c
index c25f23eb397c..8caa0b777466 100644
--- a/arch/x86/kernel/topology.c
+++ b/arch/x86/kernel/topology.c
@@ -44,15 +44,15 @@ int arch_register_cpu(int num)
* Also certain PCI quirks require not to enable hotplug control
* for all CPU's.
*/
- if (num && enable_cpu_hotplug)
+#ifdef CONFIG_HOTPLUG_CPU
+ if (num)
cpu_devices[num].cpu.hotpluggable = 1;
+#endif
return register_cpu(&cpu_devices[num].cpu, num);
}
#ifdef CONFIG_HOTPLUG_CPU
-int enable_cpu_hotplug = 1;
-
void arch_unregister_cpu(int num) {
return unregister_cpu(&cpu_devices[num].cpu);
}
diff --git a/include/asm-x86/cpu.h b/include/asm-x86/cpu.h
index 9d914e1e4aad..b1bc7b1b64b0 100644
--- a/include/asm-x86/cpu.h
+++ b/include/asm-x86/cpu.h
@@ -13,9 +13,6 @@ 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;
-#else
-#define enable_cpu_hotplug 0
#endif
DECLARE_PER_CPU(int, cpu_state);