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-rw-r--r--include/linux/cpu.h5
1 files changed, 5 insertions, 0 deletions
diff --git a/include/linux/cpu.h b/include/linux/cpu.h
index 1f7b2c097503..43c44530ef9d 100644
--- a/include/linux/cpu.h
+++ b/include/linux/cpu.h
@@ -42,6 +42,7 @@ struct notifier_block;
/* 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);
@@ -54,6 +55,10 @@ 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;