x86: replace CONFIG_X86_SMP with CONFIG_SMP

The x86/Voyager subarch used to have this distinction between
 'x86 SMP support' and 'Voyager SMP support':

 config X86_SMP
	bool
	depends on SMP && ((X86_32 && !X86_VOYAGER) || X86_64)

This is a pointless distinction - Voyager can (and already does) use
smp_ops to implement various SMP quirks it has - and it can be extended
more to cover all the specialities of Voyager.

So remove this complication in the Kconfig space.

Signed-off-by: Ingo Molnar <mingo@elte.hu>

arch/x86/Kconfig

@@ -173,11 +173,6 @@ config GENERIC_PENDING_IRQ
 	depends on GENERIC_HARDIRQS && SMP
 	default y
 
-config X86_SMP
-	bool
-	depends on SMP && ((X86_32 && !X86_VOYAGER) || X86_64)
-	default y
-
 config USE_GENERIC_SMP_HELPERS
 	def_bool y
 	depends on SMP
@@ -203,7 +198,7 @@ config X86_BIOS_REBOOT
 
 config X86_TRAMPOLINE
 	bool
-	depends on X86_SMP || (X86_VOYAGER && SMP) || (64BIT && ACPI_SLEEP)
+	depends on SMP || (64BIT && ACPI_SLEEP)
 	default y
 
 config KTIME_SCALAR

arch/x86/Kconfig.debug

@@ -83,7 +83,7 @@ config DEBUG_PAGEALLOC
 config DEBUG_PER_CPU_MAPS
 	bool "Debug access to per_cpu maps"
 	depends on DEBUG_KERNEL
-	depends on X86_SMP
+	depends on SMP
 	default n
 	help
 	  Say Y to verify that the per_cpu map being accessed has

arch/x86/include/asm/entry_arch.h

@@ -9,7 +9,7 @@
  * is no hardware IRQ pin equivalent for them, they are triggered
  * through the ICC by us (IPIs)
  */
-#ifdef CONFIG_X86_SMP
+#ifdef CONFIG_SMP
 BUILD_INTERRUPT(reschedule_interrupt,RESCHEDULE_VECTOR)
 BUILD_INTERRUPT(call_function_interrupt,CALL_FUNCTION_VECTOR)
 BUILD_INTERRUPT(call_function_single_interrupt,CALL_FUNCTION_SINGLE_VECTOR)

arch/x86/include/asm/hw_irq.h

@@ -98,7 +98,7 @@ extern asmlinkage void qic_call_function_interrupt(void);
 extern void smp_apic_timer_interrupt(struct pt_regs *);
 extern void smp_spurious_interrupt(struct pt_regs *);
 extern void smp_error_interrupt(struct pt_regs *);
-#ifdef CONFIG_X86_SMP
+#ifdef CONFIG_SMP
 extern void smp_reschedule_interrupt(struct pt_regs *);
 extern void smp_call_function_interrupt(struct pt_regs *);
 extern void smp_call_function_single_interrupt(struct pt_regs *);

arch/x86/kernel/Makefile

@@ -57,8 +57,8 @@ obj-$(CONFIG_X86_CPUID)		+= cpuid.o
 obj-$(CONFIG_PCI)		+= early-quirks.o
 apm-y				:= apm_32.o
 obj-$(CONFIG_APM)		+= apm.o
-obj-$(CONFIG_X86_SMP)		+= smp.o
-obj-$(CONFIG_X86_SMP)		+= smpboot.o tsc_sync.o ipi.o
+obj-$(CONFIG_SMP)		+= smp.o
+obj-$(CONFIG_SMP)		+= smpboot.o tsc_sync.o ipi.o
 obj-$(CONFIG_SMP)		+= setup_percpu.o
 obj-$(CONFIG_X86_64_SMP)	+= tsc_sync.o
 obj-$(CONFIG_X86_TRAMPOLINE)	+= trampoline_$(BITS).o

arch/x86/kernel/apic.c

@@ -1900,7 +1900,7 @@ void __cpuinit generic_processor_info(int apicid, int version)
 	}
 #endif
 
-#if defined(CONFIG_X86_SMP) || defined(CONFIG_X86_64)
+#if defined(CONFIG_SMP) || defined(CONFIG_X86_64)
 	early_per_cpu(x86_cpu_to_apicid, cpu) = apicid;
 	early_per_cpu(x86_bios_cpu_apicid, cpu) = apicid;
 #endif

arch/x86/kernel/cpu/addon_cpuid_features.c

@@ -69,7 +69,7 @@ void __cpuinit init_scattered_cpuid_features(struct cpuinfo_x86 *c)
  */
 void __cpuinit detect_extended_topology(struct cpuinfo_x86 *c)
 {
-#ifdef CONFIG_X86_SMP
+#ifdef CONFIG_SMP
 	unsigned int eax, ebx, ecx, edx, sub_index;
 	unsigned int ht_mask_width, core_plus_mask_width;
 	unsigned int core_select_mask, core_level_siblings;

arch/x86/kernel/process.c

@@ -344,7 +344,7 @@ static void c1e_idle(void)
 
 void __cpuinit select_idle_routine(const struct cpuinfo_x86 *c)
 {
-#ifdef CONFIG_X86_SMP
+#ifdef CONFIG_SMP
 	if (pm_idle == poll_idle && smp_num_siblings > 1) {
 		printk(KERN_WARNING "WARNING: polling idle and HT enabled,"
 			" performance may degrade.\n");

arch/x86/kernel/setup.c

@@ -588,7 +588,7 @@ early_param("elfcorehdr", setup_elfcorehdr);
 
 static int __init default_update_genapic(void)
 {
-#ifdef CONFIG_X86_SMP
+#ifdef CONFIG_SMP
 	if (!apic->wakeup_cpu)
 		apic->wakeup_cpu = wakeup_secondary_cpu_via_init;
 #endif

arch/x86/kernel/tsc.c

@@ -773,7 +773,7 @@ __cpuinit int unsynchronized_tsc(void)
 	if (!cpu_has_tsc || tsc_unstable)
 		return 1;
 
-#ifdef CONFIG_X86_SMP
+#ifdef CONFIG_SMP
 	if (apic_is_clustered_box())
 		return 1;
 #endif

arch/x86/kernel/vmiclock_32.c

@@ -256,7 +256,7 @@ void __devinit vmi_time_bsp_init(void)
 	 */
 	clockevents_notify(CLOCK_EVT_NOTIFY_SUSPEND, NULL);
 	local_irq_disable();
-#ifdef CONFIG_X86_SMP
+#ifdef CONFIG_SMP
 	/*
 	 * XXX handle_percpu_irq only defined for SMP; we need to switch over
 	 * to using it, since this is a local interrupt, which each CPU must

arch/x86/mm/Makefile

@@ -1,7 +1,7 @@
 obj-y	:=  init_$(BITS).o fault.o ioremap.o extable.o pageattr.o mmap.o \
 	    pat.o pgtable.o gup.o
 
-obj-$(CONFIG_X86_SMP)		+= tlb.o
+obj-$(CONFIG_SMP)		+= tlb.o
 
 obj-$(CONFIG_X86_32)		+= pgtable_32.o iomap_32.o