diff --git a/fs/proc/meminfo.c b/fs/proc/meminfo.c
index f2dab6c2edb3..35cbb7bcbfd3 100644
--- a/fs/proc/meminfo.c
+++ b/fs/proc/meminfo.c
@@ -144,6 +144,8 @@ static int meminfo_proc_show(struct seq_file *m, void *v)
 
 #ifdef CONFIG_CMA
 	show_val_kb(m, "CmaTotal:       ", totalcma_pages);
+	show_val_kb(m, "CmaAllocated:   ", cma_used_pages());
+	show_val_kb(m, "CmaReleased:    ", totalcma_pages - cma_used_pages());
 	show_val_kb(m, "CmaFree:        ",
 		    global_zone_page_state(NR_FREE_CMA_PAGES));
 #endif
diff --git a/include/linux/cma.h b/include/linux/cma.h
index 20cac3e866dc..28f59c1f6f38 100644
--- a/include/linux/cma.h
+++ b/include/linux/cma.h
@@ -35,6 +35,7 @@ extern int cma_init_reserved_mem(phys_addr_t base, phys_addr_t size,
 extern struct page *cma_alloc(struct cma *cma, size_t count, unsigned int align,
 			      bool no_warn);
 extern bool cma_release(struct cma *cma, const struct page *pages, unsigned int count);
+extern unsigned long cma_used_pages(void);
 
 extern int cma_for_each_area(int (*it)(struct cma *cma, void *data), void *data);
 
diff --git a/mm/cma.c b/mm/cma.c
index ca0e116fb3a9..0fa4d338303d 100644
--- a/mm/cma.c
+++ b/mm/cma.c
@@ -555,6 +555,24 @@ bool cma_release(struct cma *cma, const struct page *pages, unsigned int count)
 }
 EXPORT_SYMBOL_GPL(cma_release);
 
+unsigned long cma_used_pages(void)
+{
+	struct cma *cma;
+	unsigned long used;
+	unsigned long val = 0;
+	int i;
+
+	for (i = 0; i < cma_area_count; i++) {
+		cma = &cma_areas[i];
+		mutex_lock(&cma->lock);
+		used = bitmap_weight(cma->bitmap, (int)cma_bitmap_maxno(cma));
+		mutex_unlock(&cma->lock);
+		val += used << cma->order_per_bit;
+	}
+	return val;
+}
+EXPORT_SYMBOL_GPL(cma_used_pages);
+
 int cma_for_each_area(int (*it)(struct cma *cma, void *data), void *data)
 {
 	int i;