| #ifndef __LINUX_MEMORY_HOTPLUG_H |
| #define __LINUX_MEMORY_HOTPLUG_H |
| |
| #include <linux/mmzone.h> |
| #include <linux/spinlock.h> |
| |
| #ifdef CONFIG_MEMORY_HOTPLUG |
| /* |
| * pgdat resizing functions |
| */ |
| static inline |
| void pgdat_resize_lock(struct pglist_data *pgdat, unsigned long *flags) |
| { |
| spin_lock_irqsave(&pgdat->node_size_lock, *flags); |
| } |
| static inline |
| void pgdat_resize_unlock(struct pglist_data *pgdat, unsigned long *flags) |
| { |
| spin_lock_irqrestore(&pgdat->node_size_lock, *flags); |
| } |
| static inline |
| void pgdat_resize_init(struct pglist_data *pgdat) |
| { |
| spin_lock_init(&pgdat->node_size_lock); |
| } |
| #else /* ! CONFIG_MEMORY_HOTPLUG */ |
| /* |
| * Stub functions for when hotplug is off |
| */ |
| static inline void pgdat_resize_lock(struct pglist_data *p, unsigned long *f) {} |
| static inline void pgdat_resize_unlock(struct pglist_data *p, unsigned long *f) {} |
| static inline void pgdat_resize_init(struct pglist_data *pgdat) {} |
| #endif |
| #endif /* __LINUX_MEMORY_HOTPLUG_H */ |