1 /* SPDX-License-Identifier: GPL-2.0 */
15 /* 1) Cache tunables. Protected by slab_mutex */
20 	unsigned int size;  member
34 	size_t colour;			/* cache colouring range */
42 /* 4) cache creation/removal */
68 	 * fields and/or padding to every object. 'size' contains the total
69 	 * object size including these internal fields, while 'obj_offset'
71 	 * size.
85 	unsigned int usersize;		/* Usercopy region size */
90 static inline void *nearest_obj(struct kmem_cache *cache, struct page *page,  in nearest_obj()  argument
93 	void *object = x - (x - page->s_mem) % cache->size;  in nearest_obj()
94 	void *last_object = page->s_mem + (cache->num - 1) * cache->size;  in nearest_obj()
103  * We want to avoid an expensive divide : (offset / cache->size)
104  *   Using the fact that size is a constant for a particular cache,
105  *   we can replace (offset / cache->size) by
106  *   reciprocal_divide(offset, cache->reciprocal_buffer_size)
108 static inline unsigned int obj_to_index(const struct kmem_cache *cache,  in obj_to_index()  argument
111 	u32 offset = (obj - page->s_mem);  in obj_to_index()
112 	return reciprocal_divide(offset, cache->reciprocal_buffer_size);  in obj_to_index()
115 static inline int objs_per_slab_page(const struct kmem_cache *cache,  in objs_per_slab_page()  argument
120 	return cache->num;  in objs_per_slab_page()