X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=include%2Flinux%2Fcpu.h;h=08d50c53aab401ef79c20e85213027d854e5d199;hb=df34bf452e57697f9dac01d6975dac7f33582bf8;hp=7130cef0f1375213714bd25b2aa7d5e46391dc75;hpb=ec9397bab20a628530ce3051167d3d0fcc2c1af7;p=linux-2.6.git

diff --git a/include/linux/cpu.h b/include/linux/cpu.h
index 7130cef0f..08d50c53a 100644
--- a/include/linux/cpu.h
+++ b/include/linux/cpu.h
@@ -8,7 +8,7 @@
  * Basic handling of the devices is done in drivers/base/cpu.c
  * and system devices are handled in drivers/base/sys.c. 
  *
- * CPUs are exported via driverfs in the class/cpu/devices/
+ * CPUs are exported via sysfs in the class/cpu/devices/
  * directory. 
  *
  * Per-cpu interfaces can be implemented using a struct device_interface. 
@@ -32,12 +32,17 @@ struct cpu {
 };
 
 extern int register_cpu(struct cpu *, int, struct node *);
+extern struct sys_device *get_cpu_sysdev(unsigned cpu);
+#ifdef CONFIG_HOTPLUG_CPU
+extern void unregister_cpu(struct cpu *, struct node *);
+#endif
 struct notifier_block;
 
 #ifdef CONFIG_SMP
 /* Need to know about CPUs going up/down? */
 extern int register_cpu_notifier(struct notifier_block *nb);
 extern void unregister_cpu_notifier(struct notifier_block *nb);
+extern int current_in_cpu_hotplug(void);
 
 int cpu_up(unsigned int cpu);
 
@@ -50,16 +55,19 @@ static inline int register_cpu_notifier(struct notifier_block *nb)
 static inline void unregister_cpu_notifier(struct notifier_block *nb)
 {
 }
+static inline int current_in_cpu_hotplug(void)
+{
+	return 0;
+}
 
 #endif /* CONFIG_SMP */
 extern struct sysdev_class cpu_sysdev_class;
 
 #ifdef CONFIG_HOTPLUG_CPU
 /* Stop CPUs going up and down. */
-extern struct semaphore cpucontrol;
-#define lock_cpu_hotplug()	down(&cpucontrol)
-#define unlock_cpu_hotplug()	up(&cpucontrol)
-#define lock_cpu_hotplug_interruptible() down_interruptible(&cpucontrol)
+extern void lock_cpu_hotplug(void);
+extern void unlock_cpu_hotplug(void);
+extern int lock_cpu_hotplug_interruptible(void);
 #define hotcpu_notifier(fn, pri) {				\
 	static struct notifier_block fn##_nb =			\
 		{ .notifier_call = fn, .priority = pri };	\