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

From: Zi Yan
Date: Thu Nov 12 2020 - 17:38:24 EST


On 12 Nov 2020, at 17:22, Ralph Campbell wrote:

> 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".

Sure. Thanks for pointing this out.


Best Regards,
Yan Zi

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