Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / drivers / cpuidle / cpuidle.h

diff --git a/kernel/drivers/cpuidle/cpuidle.h b/kernel/drivers/cpuidle/cpuidle.h
new file mode 100644 (file)
index 0000000..ee97e96
--- /dev/null
+++ b/kernel/drivers/cpuidle/cpuidle.h
@@ -0,0 +1,66 @@
+/*
+ * cpuidle.h - The internal header file
+ */
+
+#ifndef __DRIVER_CPUIDLE_H
+#define __DRIVER_CPUIDLE_H
+
+/* For internal use only */
+extern struct cpuidle_governor *cpuidle_curr_governor;
+extern struct list_head cpuidle_governors;
+extern struct list_head cpuidle_detected_devices;
+extern struct mutex cpuidle_lock;
+extern spinlock_t cpuidle_driver_lock;
+extern int cpuidle_disabled(void);
+extern int cpuidle_enter_state(struct cpuidle_device *dev,
+               struct cpuidle_driver *drv, int next_state);
+
+/* idle loop */
+extern void cpuidle_install_idle_handler(void);
+extern void cpuidle_uninstall_idle_handler(void);
+
+/* governors */
+extern int cpuidle_switch_governor(struct cpuidle_governor *gov);
+
+/* sysfs */
+
+struct device;
+
+extern int cpuidle_add_interface(struct device *dev);
+extern void cpuidle_remove_interface(struct device *dev);
+extern int cpuidle_add_device_sysfs(struct cpuidle_device *device);
+extern void cpuidle_remove_device_sysfs(struct cpuidle_device *device);
+extern int cpuidle_add_sysfs(struct cpuidle_device *dev);
+extern void cpuidle_remove_sysfs(struct cpuidle_device *dev);
+
+#ifdef CONFIG_ARCH_NEEDS_CPU_IDLE_COUPLED
+bool cpuidle_state_is_coupled(struct cpuidle_device *dev,
+               struct cpuidle_driver *drv, int state);
+int cpuidle_enter_state_coupled(struct cpuidle_device *dev,
+               struct cpuidle_driver *drv, int next_state);
+int cpuidle_coupled_register_device(struct cpuidle_device *dev);
+void cpuidle_coupled_unregister_device(struct cpuidle_device *dev);
+#else
+static inline bool cpuidle_state_is_coupled(struct cpuidle_device *dev,
+               struct cpuidle_driver *drv, int state)
+{
+       return false;
+}
+
+static inline int cpuidle_enter_state_coupled(struct cpuidle_device *dev,
+               struct cpuidle_driver *drv, int next_state)
+{
+       return -1;
+}
+
+static inline int cpuidle_coupled_register_device(struct cpuidle_device *dev)
+{
+       return 0;
+}
+
+static inline void cpuidle_coupled_unregister_device(struct cpuidle_device *dev)
+{
+}
+#endif
+
+#endif /* __DRIVER_CPUIDLE_H */