37 	struct cma *cma = data;  in cma_used_get()  local
40 	mutex_lock(&cma->lock);  in cma_used_get()
42 	used = bitmap_weight(cma->bitmap, (int)cma_bitmap_maxno(cma));  in cma_used_get()
43 	mutex_unlock(&cma->lock);  in cma_used_get()
44 	*val = (u64)used << cma->order_per_bit;  in cma_used_get()
52 	struct cma *cma = data;  in cma_maxchunk_get()  local
55 	unsigned long bitmap_maxno = cma_bitmap_maxno(cma);  in cma_maxchunk_get()
57 	mutex_lock(&cma->lock);  in cma_maxchunk_get()
59 		start = find_next_zero_bit(cma->bitmap, bitmap_maxno, end);  in cma_maxchunk_get()
60 		if (start >= cma->count)  in cma_maxchunk_get()
62 		end = find_next_bit(cma->bitmap, bitmap_maxno, start);  in cma_maxchunk_get()
65 	mutex_unlock(&cma->lock);  in cma_maxchunk_get()
66 	*val = (u64)maxchunk << cma->order_per_bit;  in cma_maxchunk_get()
72 static void cma_add_to_cma_mem_list(struct cma *cma, struct cma_mem *mem)  in cma_add_to_cma_mem_list()  argument
74 	spin_lock(&cma->mem_head_lock);  in cma_add_to_cma_mem_list()
75 	hlist_add_head(&mem->node, &cma->mem_head);  in cma_add_to_cma_mem_list()
76 	spin_unlock(&cma->mem_head_lock);  in cma_add_to_cma_mem_list()
79 static struct cma_mem *cma_get_entry_from_list(struct cma *cma)  in cma_get_entry_from_list()  argument
83 	spin_lock(&cma->mem_head_lock);  in cma_get_entry_from_list()
84 	if (!hlist_empty(&cma->mem_head)) {  in cma_get_entry_from_list()
85 		mem = hlist_entry(cma->mem_head.first, struct cma_mem, node);  in cma_get_entry_from_list()
88 	spin_unlock(&cma->mem_head_lock);  in cma_get_entry_from_list()
93 static int cma_free_mem(struct cma *cma, int count)  in cma_free_mem()  argument
98 		mem = cma_get_entry_from_list(cma);  in cma_free_mem()
103 			cma_release(cma, mem->p, mem->n);  in cma_free_mem()
106 		} else if (cma->order_per_bit == 0) {  in cma_free_mem()
107 			cma_release(cma, mem->p, count);  in cma_free_mem()
111 			cma_add_to_cma_mem_list(cma, mem);  in cma_free_mem()
114 			cma_add_to_cma_mem_list(cma, mem);  in cma_free_mem()
126 	struct cma *cma = data;  in cma_free_write()  local
128 	return cma_free_mem(cma, pages);  in cma_free_write()
132 static int cma_alloc_mem(struct cma *cma, int count)  in cma_alloc_mem()  argument
141 	p = cma_alloc(cma, count, 0);  in cma_alloc_mem()
150 	cma_add_to_cma_mem_list(cma, mem);  in cma_alloc_mem()
158 	struct cma *cma = data;  in cma_alloc_write()  local
160 	return cma_alloc_mem(cma, pages);  in cma_alloc_write()
164 static void cma_debugfs_add_one(struct cma *cma, int idx)  in cma_debugfs_add_one()  argument
174 	debugfs_create_file("alloc", S_IWUSR, tmp, cma,  in cma_debugfs_add_one()
177 	debugfs_create_file("free", S_IWUSR, tmp, cma,  in cma_debugfs_add_one()
181 				&cma->base_pfn, &cma_debugfs_fops);  in cma_debugfs_add_one()
183 				&cma->count, &cma_debugfs_fops);  in cma_debugfs_add_one()
185 				&cma->order_per_bit, &cma_debugfs_fops);  in cma_debugfs_add_one()
186 	debugfs_create_file("used", S_IRUGO, tmp, cma, &cma_used_fops);  in cma_debugfs_add_one()
187 	debugfs_create_file("maxchunk", S_IRUGO, tmp, cma, &cma_maxchunk_fops);  in cma_debugfs_add_one()
189 	u32s = DIV_ROUND_UP(cma_bitmap_maxno(cma), BITS_PER_BYTE * sizeof(u32));  in cma_debugfs_add_one()
190 	debugfs_create_u32_array("bitmap", S_IRUGO, tmp, (u32*)cma->bitmap, u32s);  in cma_debugfs_add_one()