1 /* SPDX-License-Identifier: GPL-2.0 */
14 /* 1) Cache tunables. Protected by slab_mutex */
19 	unsigned int size;  member
33 	size_t colour;			/* cache colouring range */
41 /* 4) cache creation/removal */
67 	 * fields and/or padding to every object. 'size' contains the total
68 	 * object size including these internal fields, while 'obj_offset'
70 	 * size.
84 	unsigned int usersize;		/* Usercopy region size */
89 static inline void *nearest_obj(struct kmem_cache *cache, struct page *page,  in nearest_obj()  argument
92 	void *object = x - (x - page->s_mem) % cache->size;  in nearest_obj()
93 	void *last_object = page->s_mem + (cache->num - 1) * cache->size;  in nearest_obj()
102  * We want to avoid an expensive divide : (offset / cache->size)
103  *   Using the fact that size is a constant for a particular cache,
104  *   we can replace (offset / cache->size) by
105  *   reciprocal_divide(offset, cache->reciprocal_buffer_size)
107 static inline unsigned int obj_to_index(const struct kmem_cache *cache,  in obj_to_index()  argument
110 	u32 offset = (obj - page->s_mem);  in obj_to_index()
111 	return reciprocal_divide(offset, cache->reciprocal_buffer_size);  in obj_to_index()
114 static inline int objs_per_slab_page(const struct kmem_cache *cache,  in objs_per_slab_page()  argument
117 	return cache->num;  in objs_per_slab_page()