X-Git-Url: http://ftp.safe.ca/?a=blobdiff_plain;f=include%2Flinux%2Fcpu.h;h=4d668e05d45810078783c10137f2738ca8ec27da;hb=886e3b7fe6054230c89ae078a09565ed183ecc73;hp=43c44530ef9dc02297c6a27e8478c80e7cbf5c79;hpb=90d45d17f3e68608ac7ba8fc3d7acce022a19c8e;p=safe%2Fjmp%2Flinux-2.6

diff --git a/include/linux/cpu.h b/include/linux/cpu.h
index 43c4453..4d668e0 100644
--- a/include/linux/cpu.h
+++ b/include/linux/cpu.h
@@ -23,41 +23,72 @@
 #include <linux/node.h>
 #include <linux/compiler.h>
 #include <linux/cpumask.h>
-#include <asm/semaphore.h>
 
 struct cpu {
 	int node_id;		/* The node which contains the CPU */
-	int no_control;		/* Should the sysfs control file be created? */
+	int hotpluggable;	/* creates sysfs control file if hotpluggable */
 	struct sys_device sysdev;
 };
 
-extern int register_cpu(struct cpu *, int, struct node *);
-extern struct sys_device *get_cpu_sysdev(int cpu);
+extern int register_cpu(struct cpu *cpu, int num);
+extern struct sys_device *get_cpu_sysdev(unsigned cpu);
+
+extern int cpu_add_sysdev_attr(struct sysdev_attribute *attr);
+extern void cpu_remove_sysdev_attr(struct sysdev_attribute *attr);
+
+extern int cpu_add_sysdev_attr_group(struct attribute_group *attrs);
+extern void cpu_remove_sysdev_attr_group(struct attribute_group *attrs);
+
+extern int sched_create_sysfs_power_savings_entries(struct sysdev_class *cls);
+
 #ifdef CONFIG_HOTPLUG_CPU
-extern void unregister_cpu(struct cpu *, struct node *);
+extern void unregister_cpu(struct cpu *cpu);
 #endif
 struct notifier_block;
 
 #ifdef CONFIG_SMP
 /* Need to know about CPUs going up/down? */
+#ifdef CONFIG_HOTPLUG_CPU
 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);
+#else
+
+#ifndef MODULE
+extern int register_cpu_notifier(struct notifier_block *nb);
+#else
+static inline int register_cpu_notifier(struct notifier_block *nb)
+{
+	return 0;
+}
+#endif
+
+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_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)
 {
 	return 0;
 }
+
 static inline void unregister_cpu_notifier(struct notifier_block *nb)
 {
 }
-static inline int current_in_cpu_hotplug(void)
+
+static inline void cpu_maps_update_begin(void)
+{
+}
+
+static inline void cpu_maps_update_done(void)
 {
-	return 0;
 }
 
 #endif /* CONFIG_SMP */
@@ -65,26 +96,38 @@ 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 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);			\
 }
+#define register_hotcpu_notifier(nb)	register_cpu_notifier(nb)
+#define unregister_hotcpu_notifier(nb)	unregister_cpu_notifier(nb)
 int cpu_down(unsigned int cpu);
-extern int __attribute__((weak)) smp_prepare_cpu(int cpu);
-#define cpu_is_offline(cpu) unlikely(!cpu_online(cpu))
-#else
-#define lock_cpu_hotplug()	do { } while (0)
-#define unlock_cpu_hotplug()	do { } while (0)
-#define lock_cpu_hotplug_interruptible() 0
-#define hotcpu_notifier(fn, pri)
 
-/* CPUs don't go offline once they're online w/o CONFIG_HOTPLUG_CPU */
-static inline int cpu_is_offline(int cpu) { return 0; }
-#endif
+#else		/* CONFIG_HOTPLUG_CPU */
+
+#define get_online_cpus()	do { } while (0)
+#define put_online_cpus()	do { } while (0)
+#define hotcpu_notifier(fn, pri)	do { (void)(fn); } while (0)
+/* These aren't inline functions due to a GCC bug. */
+#define register_hotcpu_notifier(nb)	({ (void)(nb); 0; })
+#define unregister_hotcpu_notifier(nb)	({ (void)(nb); })
+#endif		/* CONFIG_HOTPLUG_CPU */
+
+#ifdef CONFIG_PM_SLEEP_SMP
+extern int suspend_cpu_hotplug;
+
+extern int disable_nonboot_cpus(void);
+extern void enable_nonboot_cpus(void);
+#else /* !CONFIG_PM_SLEEP_SMP */
+#define suspend_cpu_hotplug	0
+
+static inline int disable_nonboot_cpus(void) { return 0; }
+static inline void enable_nonboot_cpus(void) {}
+#endif /* !CONFIG_PM_SLEEP_SMP */
 
 #endif /* _LINUX_CPU_H_ */