[ACPI] enable SMP C-states on x86_64

http://bugzilla.kernel.org/show_bug.cgi?id=5653

Signed-off-by: David Shaohua Li <shaohua.li@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>

diff --git a/arch/x86_64/kernel/acpi/Makefile b/arch/x86_64/kernel/acpi/Makefile
index 4fe9707..080b996 100644 (file)
--- a/arch/x86_64/kernel/acpi/Makefile
+++ b/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
 

diff --git a/arch/x86_64/kernel/acpi/processor.c b/arch/x86_64/kernel/acpi/processor.c
deleted file mode 100644 (file)
index 3bdc2ba..0000000
--- a/arch/x86_64/kernel/acpi/processor.c
+++ /dev/null
@@ -1,72 +0,0 @@
-/*
- * 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);

diff --git a/include/asm-x86_64/acpi.h b/include/asm-x86_64/acpi.h
index aa1c7b2..2c95a31 100644 (file)
--- a/include/asm-x86_64/acpi.h
+++ b/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__*/