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    Subject[PATCH 05/16] tools/include: Add mm.h file
    Date
    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 <karolinadrobnik@gmail.com>
    ---
    tools/include/linux/mm.h | 42 ++++++++++++++++++++++++++++++++++++++++
    1 file changed, 42 insertions(+)
    create mode 100644 tools/include/linux/mm.h

    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
    --
    2.30.2
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