string: factorize skip_spaces and export it to be generally available

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

diff --git a/include/linux/cpu.h b/include/linux/cpu.h
index 43c4453..e287863 100644 (file)
--- a/include/linux/cpu.h
+++ b/include/linux/cpu.h
@@ -23,41 +23,85 @@
 #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);
+extern ssize_t arch_cpu_probe(const char *, size_t);
+extern ssize_t arch_cpu_release(const char *, size_t);
 #endif
 struct notifier_block;
 
 #ifdef CONFIG_SMP
 /* Need to know about CPUs going up/down? */
+#if defined(CONFIG_HOTPLUG_CPU) || !defined(MODULE)
+#define cpu_notifier(fn, pri) {                                        \
+       static struct notifier_block fn##_nb __cpuinitdata =    \
+               { .notifier_call = fn, .priority = pri };       \
+       register_cpu_notifier(&fn##_nb);                        \
+}
+#else /* #if defined(CONFIG_HOTPLUG_CPU) || !defined(MODULE) */
+#define cpu_notifier(fn, pri)  do { (void)(fn); } while (0)
+#endif /* #else #if defined(CONFIG_HOTPLUG_CPU) || !defined(MODULE) */
+#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 */
+
+#define cpu_notifier(fn, pri)  do { (void)(fn); } while (0)
 
 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 +109,47 @@ 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)
-#define hotcpu_notifier(fn, pri) {                             \
-       static struct notifier_block fn##_nb =                  \
-               { .notifier_call = fn, .priority = pri };       \
-       register_cpu_notifier(&fn##_nb);                        \
-}
+
+extern void get_online_cpus(void);
+extern void put_online_cpus(void);
+#define hotcpu_notifier(fn, pri)       cpu_notifier(fn, pri)
+#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))
+
+#ifdef CONFIG_ARCH_CPU_PROBE_RELEASE
+extern void cpu_hotplug_driver_lock(void);
+extern void cpu_hotplug_driver_unlock(void);
 #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)
+static inline void cpu_hotplug_driver_lock(void)
+{
+}
 
-/* CPUs don't go offline once they're online w/o CONFIG_HOTPLUG_CPU */
-static inline int cpu_is_offline(int cpu) { return 0; }
+static inline void cpu_hotplug_driver_unlock(void)
+{
+}
 #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_ */