x86: merge smp_prepare_boot_cpu
it is practically the same between arches now, so it is
moved to smpboot.c. Minor differences (gdt initialization)
live inside an ifdef
Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
diff --git a/arch/x86/kernel/smpboot.c b/arch/x86/kernel/smpboot.c
index a36ae27..b214d8d 100644
--- a/arch/x86/kernel/smpboot.c
+++ b/arch/x86/kernel/smpboot.c
@@ -24,6 +24,9 @@
#include <mach_wakecpu.h>
#include <smpboot_hooks.h>
+/* State of each CPU */
+DEFINE_PER_CPU(int, cpu_state) = { 0 };
+
/* Store all idle threads, this can be reused instead of creating
* a new thread. Also avoids complicated thread destroy functionality
* for idle threads.
@@ -999,6 +1002,21 @@
return 0;
}
+/*
+ * Early setup to make printk work.
+ */
+void __init native_smp_prepare_boot_cpu(void)
+{
+ int me = smp_processor_id();
+#ifdef CONFIG_X86_32
+ init_gdt(me);
+ switch_to_new_gdt();
+#endif
+ /* already set me in cpu_online_map in boot_cpu_init() */
+ cpu_set(me, cpu_callout_map);
+ per_cpu(cpu_state, me) = CPU_ONLINE;
+}
+
#ifdef CONFIG_HOTPLUG_CPU
void remove_siblinginfo(int cpu)
{