kernel/cpu.c: create a CPU_STARTING cpu_chain notifier
[linux-2.6.git] / include / linux / notifier.h
index da2698b..b86fa2f 100644 (file)
@@ -213,9 +213,16 @@ static inline int notifier_to_errno(int ret)
 #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 */
+                                       * 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 occuring while tasks are frozen due to a suspend
  * operation in progress
@@ -229,6 +236,7 @@ static inline int notifier_to_errno(int ret)
 #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)
 
 /* Hibernation and suspend events */
 #define PM_HIBERNATION_PREPARE 0x0001 /* Going to hibernate */