[ACPI] enable SMP C-states on x86_64

http://bugzilla.kernel.org/show_bug.cgi?id=5653Signed-off-by: David Shaohua Li <shaohua.li@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>

arch/x86_64/kernel/acpi/Makefile

@@ -4,5 +4,6 @@ obj-$(CONFIG_ACPI_SLEEP)	+= sleep.o wakeup.o
 
 ifneq ($(CONFIG_ACPI_PROCESSOR),)
 obj-y			+= processor.o
+processor-y		:= ../../../i386/kernel/acpi/processor.o ../../../i386/kernel/acpi/cstate.o
 endif
 

arch/x86_64/kernel/acpi/processor.c

-/*
- * arch/x86_64/kernel/acpi/processor.c
- *
- * Copyright (C) 2005 Intel Corporation
- * 	Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
- * 	- Added _PDC for platforms with Intel CPUs
- */
-
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/init.h>
-#include <linux/acpi.h>
-
-#include <acpi/processor.h>
-#include <asm/acpi.h>
-
-static void init_intel_pdc(struct acpi_processor *pr, struct cpuinfo_x86 *c)
-{
-	struct acpi_object_list *obj_list;
-	union acpi_object *obj;
-	u32 *buf;
-
-	/* allocate and initialize pdc. It will be used later. */
-	obj_list = kmalloc(sizeof(struct acpi_object_list), GFP_KERNEL);
-	if (!obj_list) {
-		printk(KERN_ERR "Memory allocation error\n");
-		return;
-	}
-
-	obj = kmalloc(sizeof(union acpi_object), GFP_KERNEL);
-	if (!obj) {
-		printk(KERN_ERR "Memory allocation error\n");
-		kfree(obj_list);
-		return;
-	}
-
-	buf = kmalloc(12, GFP_KERNEL);
-	if (!buf) {
-		printk(KERN_ERR "Memory allocation error\n");
-		kfree(obj);
-		kfree(obj_list);
-		return;
-	}
-
-	buf[0] = ACPI_PDC_REVISION_ID;
-	buf[1] = 1;
-	buf[2] = ACPI_PDC_EST_CAPABILITY_SMP;
-
-	obj->type = ACPI_TYPE_BUFFER;
-	obj->buffer.length = 12;
-	obj->buffer.pointer = (u8 *) buf;
-	obj_list->count = 1;
-	obj_list->pointer = obj;
-	pr->pdc = obj_list;
-
-	return;
-}
-
-/* Initialize _PDC data based on the CPU vendor */
-void arch_acpi_processor_init_pdc(struct acpi_processor *pr)
-{
-	unsigned int cpu = pr->id;
-	struct cpuinfo_x86 *c = cpu_data + cpu;
-
-	pr->pdc = NULL;
-	if (c->x86_vendor == X86_VENDOR_INTEL && cpu_has(c, X86_FEATURE_EST))
-		init_intel_pdc(pr, c);
-
-	return;
-}
-
-EXPORT_SYMBOL(arch_acpi_processor_init_pdc);

include/asm-x86_64/acpi.h

@@ -162,6 +162,8 @@ extern int acpi_pci_disabled;
 
 extern u8 x86_acpiid_to_apicid[];
 
+#define ARCH_HAS_POWER_INIT 1
+
 extern int acpi_skip_timer_override;
 
 #endif /*__KERNEL__*/