diff options
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/page_cgroup.h | 33 |
1 files changed, 0 insertions, 33 deletions
diff --git a/include/linux/page_cgroup.h b/include/linux/page_cgroup.h index 5bae7535c202..aaa60da8783c 100644 --- a/include/linux/page_cgroup.h +++ b/include/linux/page_cgroup.h @@ -121,39 +121,6 @@ static inline void move_unlock_page_cgroup(struct page_cgroup *pc, local_irq_restore(*flags); } -#ifdef CONFIG_SPARSEMEM -#define PCG_ARRAYID_WIDTH SECTIONS_SHIFT -#else -#define PCG_ARRAYID_WIDTH NODES_SHIFT -#endif - -#if (PCG_ARRAYID_WIDTH > BITS_PER_LONG - NR_PCG_FLAGS) -#error Not enough space left in pc->flags to store page_cgroup array IDs -#endif - -/* pc->flags: ARRAY-ID | FLAGS */ - -#define PCG_ARRAYID_MASK ((1UL << PCG_ARRAYID_WIDTH) - 1) - -#define PCG_ARRAYID_OFFSET (BITS_PER_LONG - PCG_ARRAYID_WIDTH) -/* - * Zero the shift count for non-existent fields, to prevent compiler - * warnings and ensure references are optimized away. - */ -#define PCG_ARRAYID_SHIFT (PCG_ARRAYID_OFFSET * (PCG_ARRAYID_WIDTH != 0)) - -static inline void set_page_cgroup_array_id(struct page_cgroup *pc, - unsigned long id) -{ - pc->flags &= ~(PCG_ARRAYID_MASK << PCG_ARRAYID_SHIFT); - pc->flags |= (id & PCG_ARRAYID_MASK) << PCG_ARRAYID_SHIFT; -} - -static inline unsigned long page_cgroup_array_id(struct page_cgroup *pc) -{ - return (pc->flags >> PCG_ARRAYID_SHIFT) & PCG_ARRAYID_MASK; -} - #else /* CONFIG_CGROUP_MEM_RES_CTLR */ struct page_cgroup; |