projects / GitHub / mt8127 / android_kernel_alcatel_ttab.git / blame
| Commit | Line | Data |
|---|---|---|
| 208d54e5 DH |
1 | #ifndef __LINUX_MEMORY_HOTPLUG_H |
| 2 | #define __LINUX_MEMORY_HOTPLUG_H | |
| 3 | ||
| 4 | #include <linux/mmzone.h> | |
| 5 | #include <linux/spinlock.h> | |
| 3947be19 DH |
6 | #include <linux/mmzone.h> |
| 7 | #include <linux/notifier.h> | |
| 208d54e5 | 8 | |
| 78679302 KH |
9 | struct page; |
| 10 | struct zone; | |
| 11 | struct pglist_data; | |
| 12 | ||
| 208d54e5 DH |
13 | #ifdef CONFIG_MEMORY_HOTPLUG |
| 14 | /* | |
| 15 | * pgdat resizing functions | |
| 16 | */ | |
| 17 | static inline | |
| 18 | void pgdat_resize_lock(struct pglist_data *pgdat, unsigned long *flags) | |
| 19 | { | |
| 20 | spin_lock_irqsave(&pgdat->node_size_lock, *flags); | |
| 21 | } | |
| 22 | static inline | |
| 23 | void pgdat_resize_unlock(struct pglist_data *pgdat, unsigned long *flags) | |
| 24 | { | |
| bdc8cb98 | 25 | spin_unlock_irqrestore(&pgdat->node_size_lock, *flags); |
| 208d54e5 DH |
26 | } |
| 27 | static inline | |
| 28 | void pgdat_resize_init(struct pglist_data *pgdat) | |
| 29 | { | |
| 30 | spin_lock_init(&pgdat->node_size_lock); | |
| 31 | } | |
| bdc8cb98 DH |
32 | /* |
| 33 | * Zone resizing functions | |
| 34 | */ | |
| 35 | static inline unsigned zone_span_seqbegin(struct zone *zone) | |
| 36 | { | |
| 37 | return read_seqbegin(&zone->span_seqlock); | |
| 38 | } | |
| 39 | static inline int zone_span_seqretry(struct zone *zone, unsigned iv) | |
| 40 | { | |
| 41 | return read_seqretry(&zone->span_seqlock, iv); | |
| 42 | } | |
| 43 | static inline void zone_span_writelock(struct zone *zone) | |
| 44 | { | |
| 45 | write_seqlock(&zone->span_seqlock); | |
| 46 | } | |
| 47 | static inline void zone_span_writeunlock(struct zone *zone) | |
| 48 | { | |
| 49 | write_sequnlock(&zone->span_seqlock); | |
| 50 | } | |
| 51 | static inline void zone_seqlock_init(struct zone *zone) | |
| 52 | { | |
| 53 | seqlock_init(&zone->span_seqlock); | |
| 54 | } | |
| 3947be19 DH |
55 | extern int zone_grow_free_lists(struct zone *zone, unsigned long new_nr_pages); |
| 56 | extern int zone_grow_waitqueues(struct zone *zone, unsigned long nr_pages); | |
| 57 | extern int add_one_highpage(struct page *page, int pfn, int bad_ppro); | |
| 58 | /* need some defines for these for archs that don't support it */ | |
| 59 | extern void online_page(struct page *page); | |
| 60 | /* VM interface that may be used by firmware interface */ | |
| 61 | extern int add_memory(u64 start, u64 size); | |
| 62 | extern int remove_memory(u64 start, u64 size); | |
| 63 | extern int online_pages(unsigned long, unsigned long); | |
| 64 | ||
| 65 | /* reasonably generic interface to expand the physical pages in a zone */ | |
| 66 | extern int __add_pages(struct zone *zone, unsigned long start_pfn, | |
| 67 | unsigned long nr_pages); | |
| 208d54e5 DH |
68 | #else /* ! CONFIG_MEMORY_HOTPLUG */ |
| 69 | /* | |
| 70 | * Stub functions for when hotplug is off | |
| 71 | */ | |
| 72 | static inline void pgdat_resize_lock(struct pglist_data *p, unsigned long *f) {} | |
| 73 | static inline void pgdat_resize_unlock(struct pglist_data *p, unsigned long *f) {} | |
| 74 | static inline void pgdat_resize_init(struct pglist_data *pgdat) {} | |
| bdc8cb98 DH |
75 | |
| 76 | static inline unsigned zone_span_seqbegin(struct zone *zone) | |
| 77 | { | |
| 78 | return 0; | |
| 79 | } | |
| 80 | static inline int zone_span_seqretry(struct zone *zone, unsigned iv) | |
| 81 | { | |
| 82 | return 0; | |
| 83 | } | |
| 84 | static inline void zone_span_writelock(struct zone *zone) {} | |
| 85 | static inline void zone_span_writeunlock(struct zone *zone) {} | |
| 86 | static inline void zone_seqlock_init(struct zone *zone) {} | |
| 3947be19 DH |
87 | |
| 88 | static inline int mhp_notimplemented(const char *func) | |
| 89 | { | |
| 90 | printk(KERN_WARNING "%s() called, with CONFIG_MEMORY_HOTPLUG disabled\n", func); | |
| 91 | dump_stack(); | |
| 92 | return -ENOSYS; | |
| 93 | } | |
| 94 | ||
| 95 | static inline int __add_pages(struct zone *zone, unsigned long start_pfn, | |
| 96 | unsigned long nr_pages) | |
| 97 | { | |
| 98 | return mhp_notimplemented(__FUNCTION__); | |
| 99 | } | |
| bdc8cb98 | 100 | #endif /* ! CONFIG_MEMORY_HOTPLUG */ |
| 3947be19 DH |
101 | static inline int __remove_pages(struct zone *zone, unsigned long start_pfn, |
| 102 | unsigned long nr_pages) | |
| 103 | { | |
| 104 | printk(KERN_WARNING "%s() called, not yet supported\n", __FUNCTION__); | |
| 105 | dump_stack(); | |
| 106 | return -ENOSYS; | |
| 107 | } | |
| 208d54e5 | 108 | #endif /* __LINUX_MEMORY_HOTPLUG_H */ |