[ACPI] Split the ACPI Processor P-States library into a different file

Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.de>
Signed-off-by: Len Brown <len.brown@intel.com>

drivers/acpi/Makefile

@@ -29,6 +29,11 @@ obj-$(CONFIG_ACPI_INTERPRETER)	+= osl.o utils.o \
 #
 # ACPI Bus and Device Drivers
 #
+processor_tmp-objs	+= processor.o
+ifdef CONFIG_CPU_FREQ
+processor_tmp-objs	+= processor_perflib.o
+endif
+
 obj-$(CONFIG_ACPI_BUS)		+= sleep/
 obj-$(CONFIG_ACPI_BUS)		+= bus.o
 obj-$(CONFIG_ACPI_AC) 		+= ac.o
@@ -39,7 +44,7 @@ obj-$(CONFIG_ACPI_FAN)		+= fan.o
 obj-$(CONFIG_ACPI_VIDEO)	+= video.o
 obj-$(CONFIG_ACPI_PCI)		+= pci_root.o pci_link.o pci_irq.o pci_bind.o
 obj-$(CONFIG_ACPI_POWER)	+= power.o
-obj-$(CONFIG_ACPI_PROCESSOR)	+= processor.o
+obj-$(CONFIG_ACPI_PROCESSOR)	+= processor_tmp.o
 obj-$(CONFIG_ACPI_CONTAINER)	+= container.o
 obj-$(CONFIG_ACPI_THERMAL)	+= thermal.o
 obj-$(CONFIG_ACPI_SYSTEM)	+= system.o event.o

include/acpi/processor.h

@@ -2,6 +2,7 @@
 #define __ACPI_PROCESSOR_H
 
 #include <linux/kernel.h>
+#include <linux/config.h>
 
 #define ACPI_PROCESSOR_BUSY_METRIC	10
 
@@ -144,4 +145,28 @@ extern void acpi_processor_unregister_performance (
          if a _PPC object exists, rmmod is disallowed then */
 int acpi_processor_notify_smm(struct module *calling_module);
 
+
+
+/* for communication between multiple parts of the processor kernel module */
+extern struct acpi_processor	*processors[NR_CPUS];
+
+/* in processor_perflib.c */
+#ifdef CONFIG_CPU_FREQ
+void acpi_processor_ppc_init(void);
+void acpi_processor_ppc_exit(void);
+int acpi_processor_ppc_has_changed(struct acpi_processor *pr);
+#else
+static inline void acpi_processor_ppc_init(void) { return; }
+static inline void acpi_processor_ppc_exit(void) { return; }
+static inline int acpi_processor_ppc_has_changed(struct acpi_processor *pr) {
+	static unsigned int printout = 1;
+	if (printout) {
+		printk(KERN_WARNING "Warning: Processor Platform Limit event detected, but not handled.\n");
+		printk(KERN_WARNING "Consider compiling CPUfreq support into your kernel.\n");
+		printout = 0;
+	}
+	return 0;
+}
+#endif /* CONFIG_CPU_FREQ */
+
 #endif