Re: [RFC PATCH 1/6] mm: huge_memory: add new debugfs interface to trigger split huge page on any page range.

[Ralph Campbell]

On 11/11/20 12:40 PM, Zi Yan wrote:
> From: Zi Yan <ziy@xxxxxxxxxx>
>
> Huge pages in the process with the given pid and virtual address range
> are split. It is used to test split huge page function. In addition,
> a testing program is added to tools/testing/selftests/vm to utilize the
> interface by splitting PMD THPs.
>
> Signed-off-by: Zi Yan <ziy@xxxxxxxxxx>
> ---
>   mm/huge_memory.c                              |  98 +++++++++++
>   mm/internal.h                                 |   1 +
>   mm/migrate.c                                  |   2 +-
>   tools/testing/selftests/vm/Makefile           |   1 +
>   .../selftests/vm/split_huge_page_test.c       | 161 ++++++++++++++++++
>   5 files changed, 262 insertions(+), 1 deletion(-)
>   create mode 100644 tools/testing/selftests/vm/split_huge_page_test.c

Don't forget to update ".gitignore" to include "split_huge_page_test".