net: Avoid extra wakeups of threads blocked in wait_for_packet()

[safe/jmp/linux-2.6] / include / linux / cpu.h

diff --git a/include/linux/cpu.h b/include/linux/cpu.h
index 0be8d65..2643d84 100644 (file)
--- a/include/linux/cpu.h
+++ b/include/linux/cpu.h
@@ -23,8 +23,6 @@
 #include <linux/node.h>
 #include <linux/compiler.h>
 #include <linux/cpumask.h>
-#include <asm/semaphore.h>
-#include <linux/mutex.h>
 
 struct cpu {
        int node_id;            /* The node which contains the CPU */
@@ -70,10 +68,12 @@ static inline void unregister_cpu_notifier(struct notifier_block *nb)
 #endif
 
 int cpu_up(unsigned int cpu);
-
+void notify_cpu_starting(unsigned int cpu);
 extern void cpu_hotplug_init(void);
+extern void cpu_maps_update_begin(void);
+extern void cpu_maps_update_done(void);
 
-#else
+#else  /* CONFIG_SMP */
 
 static inline int register_cpu_notifier(struct notifier_block *nb)
 {
@@ -88,28 +88,24 @@ static inline void cpu_hotplug_init(void)
 {
 }
 
-#endif /* CONFIG_SMP */
-extern struct sysdev_class cpu_sysdev_class;
-extern void cpu_maps_update_begin(void);
-extern void cpu_maps_update_done(void);
-
-#ifdef CONFIG_HOTPLUG_CPU
-/* Stop CPUs going up and down. */
-
-static inline void cpuhotplug_mutex_lock(struct mutex *cpu_hp_mutex)
+static inline void cpu_maps_update_begin(void)
 {
-       mutex_lock(cpu_hp_mutex);
 }
 
-static inline void cpuhotplug_mutex_unlock(struct mutex *cpu_hp_mutex)
+static inline void cpu_maps_update_done(void)
 {
-       mutex_unlock(cpu_hp_mutex);
 }
 
+#endif /* CONFIG_SMP */
+extern struct sysdev_class cpu_sysdev_class;
+
+#ifdef CONFIG_HOTPLUG_CPU
+/* Stop CPUs going up and down. */
+
 extern void get_online_cpus(void);
 extern void put_online_cpus(void);
 #define hotcpu_notifier(fn, pri) {                             \
-       static struct notifier_block fn##_nb =                  \
+       static struct notifier_block fn##_nb __cpuinitdata =    \
                { .notifier_call = fn, .priority = pri };       \
        register_cpu_notifier(&fn##_nb);                        \
 }
@@ -119,11 +115,6 @@ int cpu_down(unsigned int cpu);
 
 #else          /* CONFIG_HOTPLUG_CPU */
 
-static inline void cpuhotplug_mutex_lock(struct mutex *cpu_hp_mutex)
-{ }
-static inline void cpuhotplug_mutex_unlock(struct mutex *cpu_hp_mutex)
-{ }
-
 #define get_online_cpus()      do { } while (0)
 #define put_online_cpus()      do { } while (0)
 #define hotcpu_notifier(fn, pri)       do { (void)(fn); } while (0)