1 files changed, 40 insertions, 0 deletions

diff --git a/include/linux/cpu.h b/include/linux/cpu.h
index 5f09323ee88..54d948ec49a 100644
--- a/include/linux/cpu.h
+++ b/include/linux/cpu.h
@@ -70,6 +70,39 @@ enum {
         CPU_PRI_WORKQUEUE       = 5,
 };
 
+#define CPU_ONLINE              0x0002 /* CPU (unsigned)v is up */
+#define CPU_UP_PREPARE          0x0003 /* CPU (unsigned)v coming up */
+#define CPU_UP_CANCELED         0x0004 /* CPU (unsigned)v NOT coming up */
+#define CPU_DOWN_PREPARE        0x0005 /* CPU (unsigned)v going down */
+#define CPU_DOWN_FAILED         0x0006 /* CPU (unsigned)v NOT going down */
+#define CPU_DEAD                0x0007 /* CPU (unsigned)v dead */
+#define CPU_DYING               0x0008 /* CPU (unsigned)v not running any task,
+                                        * not handling interrupts, soon dead.
+                                        * Called on the dying cpu, interrupts
+                                        * are already disabled. Must not
+                                        * sleep, must not fail */
+#define CPU_POST_DEAD           0x0009 /* CPU (unsigned)v dead, cpu_hotplug
+                                        * lock is dropped */
+#define CPU_STARTING            0x000A /* CPU (unsigned)v soon running.
+                                        * Called on the new cpu, just before
+                                        * enabling interrupts. Must not sleep,
+                                        * must not fail */
+
+/* Used for CPU hotplug events occurring while tasks are frozen due to a suspend
+ * operation in progress
+ */
+#define CPU_TASKS_FROZEN        0x0010
+
+#define CPU_ONLINE_FROZEN       (CPU_ONLINE | CPU_TASKS_FROZEN)
+#define CPU_UP_PREPARE_FROZEN   (CPU_UP_PREPARE | CPU_TASKS_FROZEN)
+#define CPU_UP_CANCELED_FROZEN  (CPU_UP_CANCELED | CPU_TASKS_FROZEN)
+#define CPU_DOWN_PREPARE_FROZEN (CPU_DOWN_PREPARE | CPU_TASKS_FROZEN)
+#define CPU_DOWN_FAILED_FROZEN  (CPU_DOWN_FAILED | CPU_TASKS_FROZEN)
+#define CPU_DEAD_FROZEN         (CPU_DEAD | CPU_TASKS_FROZEN)
+#define CPU_DYING_FROZEN        (CPU_DYING | CPU_TASKS_FROZEN)
+#define CPU_STARTING_FROZEN     (CPU_STARTING | CPU_TASKS_FROZEN)
+
+
 #ifdef CONFIG_SMP
 /* Need to know about CPUs going up/down? */
 #if defined(CONFIG_HOTPLUG_CPU) || !defined(MODULE)
@@ -174,4 +207,11 @@ static inline int disable_nonboot_cpus(void) { return 0; }
 static inline void enable_nonboot_cpus(void) {}
 #endif /* !CONFIG_PM_SLEEP_SMP */
 
+#define IDLE_START 1
+#define IDLE_END 2
+
+void idle_notifier_register(struct notifier_block *n);
+void idle_notifier_unregister(struct notifier_block *n);
+void idle_notifier_call_chain(unsigned long val);
+
 #endif /* _LINUX_CPU_H_ */