36 	struct cma *cma = data;  in cma_used_get()  local
39 	spin_lock_irq(&cma->lock);  in cma_used_get()
41 	used = bitmap_weight(cma->bitmap, (int)cma_bitmap_maxno(cma));  in cma_used_get()
42 	spin_unlock_irq(&cma->lock);  in cma_used_get()
43 	*val = (u64)used << cma->order_per_bit;  in cma_used_get()
51 	struct cma *cma = data;  in cma_maxchunk_get()  local
54 	unsigned long bitmap_maxno = cma_bitmap_maxno(cma);  in cma_maxchunk_get()
56 	spin_lock_irq(&cma->lock);  in cma_maxchunk_get()
58 		start = find_next_zero_bit(cma->bitmap, bitmap_maxno, end);  in cma_maxchunk_get()
61 		end = find_next_bit(cma->bitmap, bitmap_maxno, start);  in cma_maxchunk_get()
64 	spin_unlock_irq(&cma->lock);  in cma_maxchunk_get()
65 	*val = (u64)maxchunk << cma->order_per_bit;  in cma_maxchunk_get()
71 static void cma_add_to_cma_mem_list(struct cma *cma, struct cma_mem *mem)  in cma_add_to_cma_mem_list()  argument
73 	spin_lock(&cma->mem_head_lock);  in cma_add_to_cma_mem_list()
74 	hlist_add_head(&mem->node, &cma->mem_head);  in cma_add_to_cma_mem_list()
75 	spin_unlock(&cma->mem_head_lock);  in cma_add_to_cma_mem_list()
78 static struct cma_mem *cma_get_entry_from_list(struct cma *cma)  in cma_get_entry_from_list()  argument
82 	spin_lock(&cma->mem_head_lock);  in cma_get_entry_from_list()
83 	if (!hlist_empty(&cma->mem_head)) {  in cma_get_entry_from_list()
84 		mem = hlist_entry(cma->mem_head.first, struct cma_mem, node);  in cma_get_entry_from_list()
87 	spin_unlock(&cma->mem_head_lock);  in cma_get_entry_from_list()
92 static int cma_free_mem(struct cma *cma, int count)  in cma_free_mem()  argument
97 		mem = cma_get_entry_from_list(cma);  in cma_free_mem()
102 			cma_release(cma, mem->p, mem->n);  in cma_free_mem()
105 		} else if (cma->order_per_bit == 0) {  in cma_free_mem()
106 			cma_release(cma, mem->p, count);  in cma_free_mem()
110 			cma_add_to_cma_mem_list(cma, mem);  in cma_free_mem()
113 			cma_add_to_cma_mem_list(cma, mem);  in cma_free_mem()
125 	struct cma *cma = data;  in cma_free_write()  local
127 	return cma_free_mem(cma, pages);  in cma_free_write()
131 static int cma_alloc_mem(struct cma *cma, int count)  in cma_alloc_mem()  argument
140 	p = cma_alloc(cma, count, 0, GFP_KERNEL);  in cma_alloc_mem()
149 	cma_add_to_cma_mem_list(cma, mem);  in cma_alloc_mem()
157 	struct cma *cma = data;  in cma_alloc_write()  local
159 	return cma_alloc_mem(cma, pages);  in cma_alloc_write()
163 static void cma_debugfs_add_one(struct cma *cma, struct dentry *root_dentry)  in cma_debugfs_add_one()  argument
168 	scnprintf(name, sizeof(name), "cma-%s", cma->name);  in cma_debugfs_add_one()
172 	debugfs_create_file("alloc", 0200, tmp, cma, &cma_alloc_fops);  in cma_debugfs_add_one()
173 	debugfs_create_file("free", 0200, tmp, cma, &cma_free_fops);  in cma_debugfs_add_one()
175 			    &cma->base_pfn, &cma_debugfs_fops);  in cma_debugfs_add_one()
176 	debugfs_create_file("count", 0444, tmp, &cma->count, &cma_debugfs_fops);  in cma_debugfs_add_one()
178 			    &cma->order_per_bit, &cma_debugfs_fops);  in cma_debugfs_add_one()
179 	debugfs_create_file("used", 0444, tmp, cma, &cma_used_fops);  in cma_debugfs_add_one()
180 	debugfs_create_file("maxchunk", 0444, tmp, cma, &cma_maxchunk_fops);  in cma_debugfs_add_one()
182 	cma->dfs_bitmap.array = (u32 *)cma->bitmap;  in cma_debugfs_add_one()
183 	cma->dfs_bitmap.n_elements = DIV_ROUND_UP(cma_bitmap_maxno(cma),  in cma_debugfs_add_one()
185 	debugfs_create_u32_array("bitmap", 0444, tmp, &cma->dfs_bitmap);  in cma_debugfs_add_one()