diff options
Diffstat (limited to 'include/linux/mmzone.h')
| -rw-r--r-- | include/linux/mmzone.h | 20 |
1 files changed, 18 insertions, 2 deletions
diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h index bab4053fb795..ddb3b927de39 100644 --- a/include/linux/mmzone.h +++ b/include/linux/mmzone.h @@ -39,8 +39,6 @@ enum { MIGRATE_UNMOVABLE, MIGRATE_MOVABLE, MIGRATE_RECLAIMABLE, - MIGRATE_PCPTYPES, /* the number of types on the pcp lists */ - MIGRATE_HIGHATOMIC = MIGRATE_PCPTYPES, #ifdef CONFIG_CMA /* * MIGRATE_CMA migration type is designed to mimic the way @@ -57,17 +55,31 @@ enum { */ MIGRATE_CMA, #endif + MIGRATE_PCPTYPES, /* the number of types on the pcp lists */ + MIGRATE_HIGHATOMIC = MIGRATE_PCPTYPES, #ifdef CONFIG_MEMORY_ISOLATION MIGRATE_ISOLATE, /* can't allocate from here */ #endif MIGRATE_TYPES }; +/* + * Returns a list which contains the migrate types on to which + * an allocation falls back when the free list for the migrate + * type mtype is depleted. + * The end of the list is delimited by the type MIGRATE_TYPES. + */ +extern int *get_migratetype_fallbacks(int mtype); + #ifdef CONFIG_CMA +bool is_cma_pageblock(struct page *page); # define is_migrate_cma(migratetype) unlikely((migratetype) == MIGRATE_CMA) +# define get_cma_migrate_type() MIGRATE_CMA # define is_migrate_cma_page(_page) (get_pageblock_migratetype(_page) == MIGRATE_CMA) #else +# define is_cma_pageblock(page) false # define is_migrate_cma(migratetype) false +# define get_cma_migrate_type() MIGRATE_MOVABLE # define is_migrate_cma_page(_page) false #endif @@ -159,6 +171,7 @@ enum zone_stat_item { WORKINGSET_NODERECLAIM, NR_ANON_TRANSPARENT_HUGEPAGES, NR_FREE_CMA_PAGES, + NR_SWAPCACHE, NR_VM_ZONE_STAT_ITEMS }; /* @@ -367,6 +380,9 @@ struct zone { * considered dirtyable memory. */ unsigned long dirty_balance_reserve; +#ifdef CONFIG_CMA + bool cma_alloc; +#endif #ifndef CONFIG_SPARSEMEM /* |