| Dave Hansen | 208d54e | 2005-10-29 18:16:52 -0700 | [diff] [blame^] | 1 | #ifndef __LINUX_MEMORY_HOTPLUG_H |
| 2 | #define __LINUX_MEMORY_HOTPLUG_H |
| 3 | |
| 4 | #include <linux/mmzone.h> |
| 5 | #include <linux/spinlock.h> |
| 6 | |
| 7 | #ifdef CONFIG_MEMORY_HOTPLUG |
| 8 | /* |
| 9 | * pgdat resizing functions |
| 10 | */ |
| 11 | static inline |
| 12 | void pgdat_resize_lock(struct pglist_data *pgdat, unsigned long *flags) |
| 13 | { |
| 14 | spin_lock_irqsave(&pgdat->node_size_lock, *flags); |
| 15 | } |
| 16 | static inline |
| 17 | void pgdat_resize_unlock(struct pglist_data *pgdat, unsigned long *flags) |
| 18 | { |
| 19 | spin_lock_irqrestore(&pgdat->node_size_lock, *flags); |
| 20 | } |
| 21 | static inline |
| 22 | void pgdat_resize_init(struct pglist_data *pgdat) |
| 23 | { |
| 24 | spin_lock_init(&pgdat->node_size_lock); |
| 25 | } |
| 26 | #else /* ! CONFIG_MEMORY_HOTPLUG */ |
| 27 | /* |
| 28 | * Stub functions for when hotplug is off |
| 29 | */ |
| 30 | static inline void pgdat_resize_lock(struct pglist_data *p, unsigned long *f) {} |
| 31 | static inline void pgdat_resize_unlock(struct pglist_data *p, unsigned long *f) {} |
| 32 | static inline void pgdat_resize_init(struct pglist_data *pgdat) {} |
| 33 | #endif |
| 34 | #endif /* __LINUX_MEMORY_HOTPLUG_H */ |