x86: move this_cpu_offset
Impact: Small cleanup
Define BOOT_PERCPU_OFFSET and use it for this_cpu_offset and
__per_cpu_offset initializers.
Signed-off-by: Brian Gerst <brgerst@gmail.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
diff --git a/arch/x86/kernel/setup_percpu.c b/arch/x86/kernel/setup_percpu.c
index f30ff69..36c2e81 100644
--- a/arch/x86/kernel/setup_percpu.c
+++ b/arch/x86/kernel/setup_percpu.c
@@ -25,15 +25,20 @@
DEFINE_PER_CPU(int, cpu_number);
EXPORT_PER_CPU_SYMBOL(cpu_number);
+#ifdef CONFIG_X86_64
+#define BOOT_PERCPU_OFFSET ((unsigned long)__per_cpu_load)
+#else
+#define BOOT_PERCPU_OFFSET 0
+#endif
+
+DEFINE_PER_CPU(unsigned long, this_cpu_off) = BOOT_PERCPU_OFFSET;
+EXPORT_PER_CPU_SYMBOL(this_cpu_off);
+
#ifdef CONFIG_HAVE_SETUP_PER_CPU_AREA
-#ifdef CONFIG_X86_64
unsigned long __per_cpu_offset[NR_CPUS] __read_mostly = {
- [0] = (unsigned long)__per_cpu_load,
+ [0] = BOOT_PERCPU_OFFSET,
};
-#else
-unsigned long __per_cpu_offset[NR_CPUS] __read_mostly;
-#endif
EXPORT_SYMBOL(__per_cpu_offset);
/*
diff --git a/arch/x86/kernel/smpcommon.c b/arch/x86/kernel/smpcommon.c
index add36b4..5ec29a1 100644
--- a/arch/x86/kernel/smpcommon.c
+++ b/arch/x86/kernel/smpcommon.c
@@ -5,13 +5,6 @@
#include <asm/smp.h>
#include <asm/sections.h>
-#ifdef CONFIG_X86_64
-DEFINE_PER_CPU(unsigned long, this_cpu_off) = (unsigned long)__per_cpu_load;
-#else
-DEFINE_PER_CPU(unsigned long, this_cpu_off);
-#endif
-EXPORT_PER_CPU_SYMBOL(this_cpu_off);
-
#ifdef CONFIG_X86_32
/*
* Initialize the CPU's GDT. This is either the boot CPU doing itself