Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / include / linux / cma.h

diff --git a/kernel/include/linux/cma.h b/kernel/include/linux/cma.h
new file mode 100644 (file)
index 0000000..f7ef093
--- /dev/null
+++ b/kernel/include/linux/cma.h
@@ -0,0 +1,31 @@
+#ifndef __CMA_H__
+#define __CMA_H__
+
+/*
+ * There is always at least global CMA area and a few optional
+ * areas configured in kernel .config.
+ */
+#ifdef CONFIG_CMA_AREAS
+#define MAX_CMA_AREAS  (1 + CONFIG_CMA_AREAS)
+
+#else
+#define MAX_CMA_AREAS  (0)
+
+#endif
+
+struct cma;
+
+extern unsigned long totalcma_pages;
+extern phys_addr_t cma_get_base(const struct cma *cma);
+extern unsigned long cma_get_size(const struct cma *cma);
+
+extern int __init cma_declare_contiguous(phys_addr_t base,
+                       phys_addr_t size, phys_addr_t limit,
+                       phys_addr_t alignment, unsigned int order_per_bit,
+                       bool fixed, struct cma **res_cma);
+extern int cma_init_reserved_mem(phys_addr_t base, phys_addr_t size,
+                                       unsigned int order_per_bit,
+                                       struct cma **res_cma);
+extern struct page *cma_alloc(struct cma *cma, unsigned int count, unsigned int align);
+extern bool cma_release(struct cma *cma, const struct page *pages, unsigned int count);
+#endif