diff options
Diffstat (limited to 'include/linux/page_cgroup.h')
-rw-r--r-- | include/linux/page_cgroup.h | 105 |
1 files changed, 0 insertions, 105 deletions
diff --git a/include/linux/page_cgroup.h b/include/linux/page_cgroup.h deleted file mode 100644 index 5c831f1..0000000 --- a/include/linux/page_cgroup.h +++ /dev/null @@ -1,105 +0,0 @@ -#ifndef __LINUX_PAGE_CGROUP_H -#define __LINUX_PAGE_CGROUP_H - -enum { - /* flags for mem_cgroup */ - PCG_USED = 0x01, /* This page is charged to a memcg */ - PCG_MEM = 0x02, /* This page holds a memory charge */ - PCG_MEMSW = 0x04, /* This page holds a memory+swap charge */ -}; - -struct pglist_data; - -#ifdef CONFIG_MEMCG -struct mem_cgroup; - -/* - * Page Cgroup can be considered as an extended mem_map. - * A page_cgroup page is associated with every page descriptor. The - * page_cgroup helps us identify information about the cgroup - * All page cgroups are allocated at boot or memory hotplug event, - * then the page cgroup for pfn always exists. - */ -struct page_cgroup { - unsigned long flags; - struct mem_cgroup *mem_cgroup; -}; - -extern void pgdat_page_cgroup_init(struct pglist_data *pgdat); - -#ifdef CONFIG_SPARSEMEM -static inline void page_cgroup_init_flatmem(void) -{ -} -extern void page_cgroup_init(void); -#else -extern void page_cgroup_init_flatmem(void); -static inline void page_cgroup_init(void) -{ -} -#endif - -struct page_cgroup *lookup_page_cgroup(struct page *page); - -static inline int PageCgroupUsed(struct page_cgroup *pc) -{ - return !!(pc->flags & PCG_USED); -} -#else /* !CONFIG_MEMCG */ -struct page_cgroup; - -static inline void pgdat_page_cgroup_init(struct pglist_data *pgdat) -{ -} - -static inline struct page_cgroup *lookup_page_cgroup(struct page *page) -{ - return NULL; -} - -static inline void page_cgroup_init(void) -{ -} - -static inline void page_cgroup_init_flatmem(void) -{ -} -#endif /* CONFIG_MEMCG */ - -#include <linux/swap.h> - -#ifdef CONFIG_MEMCG_SWAP -extern unsigned short swap_cgroup_cmpxchg(swp_entry_t ent, - unsigned short old, unsigned short new); -extern unsigned short swap_cgroup_record(swp_entry_t ent, unsigned short id); -extern unsigned short lookup_swap_cgroup_id(swp_entry_t ent); -extern int swap_cgroup_swapon(int type, unsigned long max_pages); -extern void swap_cgroup_swapoff(int type); -#else - -static inline -unsigned short swap_cgroup_record(swp_entry_t ent, unsigned short id) -{ - return 0; -} - -static inline -unsigned short lookup_swap_cgroup_id(swp_entry_t ent) -{ - return 0; -} - -static inline int -swap_cgroup_swapon(int type, unsigned long max_pages) -{ - return 0; -} - -static inline void swap_cgroup_swapoff(int type) -{ - return; -} - -#endif /* CONFIG_MEMCG_SWAP */ - -#endif /* __LINUX_PAGE_CGROUP_H */ |