[05/16] tools/include: Add mm.h file

Commit Message

Karolina Drobnik Jan. 27, 2022, 1:21 p.m. UTC

Add a stubbed mm.h file with dummy page-related definitions,
memory alignment and physical to virtual address conversions,
so they can be used in testing.

Signed-off-by: Karolina Drobnik <[e-mail]>
---
 tools/include/linux/mm.h | 42 ++++++++++++++++++++++++++++++++++++++++
 1 file changed, 42 insertions(+)
 create mode 100644 tools/include/linux/mm.h

--
2.30.2

Patch

diff --git a/tools/include/linux/mm.h b/tools/include/linux/mm.h
new file mode 100644
index 000000000000..a03d9bba5151
--- /dev/null
+++ b/tools/include/linux/mm.h
@@ -0,0 +1,42 @@ 
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _TOOLS_LINUX_MM_H
+#define _TOOLS_LINUX_MM_H
+
+#include <linux/mmzone.h>
+#include <uapi/linux/const.h>
+
+#define PAGE_SHIFT		12
+#define PAGE_SIZE		(_AC(1, UL) << PAGE_SHIFT)
+#define PAGE_MASK		(~(PAGE_SIZE - 1))
+
+#define PHYS_ADDR_MAX	(~(phys_addr_t)0)
+
+#define __ALIGN_KERNEL(x, a)		__ALIGN_KERNEL_MASK(x, (typeof(x))(a) - 1)
+#define __ALIGN_KERNEL_MASK(x, mask)	(((x) + (mask)) & ~(mask))
+#define ALIGN(x, a)			__ALIGN_KERNEL((x), (a))
+#define ALIGN_DOWN(x, a)		__ALIGN_KERNEL((x) - ((a) - 1), (a))
+
+#define PAGE_ALIGN(addr) ALIGN(addr, PAGE_SIZE)
+
+#define __va(x) ((void *)((unsigned long)(x)))
+#define __pa(x) ((unsigned long)(x))
+
+#define pfn_to_page(pfn) ((void *)((pfn) * PAGE_SIZE))
+
+#define phys_to_virt phys_to_virt
+static inline void *phys_to_virt(unsigned long address)
+{
+	return __va(address);
+}
+
+void reserve_bootmem_region(phys_addr_t start, phys_addr_t end);
+
+static inline void totalram_pages_inc(void)
+{
+}
+
+static inline void totalram_pages_add(long count)
+{
+}
+
+#endif