From 2e6d88e9d455fae9c4ac95c893362258f9540dfa Mon Sep 17 00:00:00 2001 From: Baolin Wang Date: Tue, 20 Aug 2024 17:49:17 +0800 Subject: selftests: mm: support shmem mTHP collapse testing Add shmem mTHP collpase testing. Similar to the anonymous page, users can use the '-s' parameter to specify the shmem mTHP size for testing. Link: https://lkml.kernel.org/r/fa44bfa20ca5b9fd6f9163a048f3d3c1e53cd0a8.1724140601.git.baolin.wang@linux.alibaba.com Signed-off-by: Baolin Wang Cc: Barry Song <21cnbao@gmail.com> Cc: David Hildenbrand Cc: Hugh Dickins Cc: Matthew Wilcox Cc: Ryan Roberts Cc: Yang Shi Cc: Zi Yan Signed-off-by: Andrew Morton --- tools/testing/selftests/mm/thp_settings.h | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) (limited to 'tools/testing/selftests/mm/thp_settings.h') diff --git a/tools/testing/selftests/mm/thp_settings.h b/tools/testing/selftests/mm/thp_settings.h index 71cbff05f4c7..876235a23460 100644 --- a/tools/testing/selftests/mm/thp_settings.h +++ b/tools/testing/selftests/mm/thp_settings.h @@ -22,10 +22,11 @@ enum thp_defrag { }; enum shmem_enabled { + SHMEM_NEVER, SHMEM_ALWAYS, SHMEM_WITHIN_SIZE, SHMEM_ADVISE, - SHMEM_NEVER, + SHMEM_INHERIT, SHMEM_DENY, SHMEM_FORCE, }; @@ -46,6 +47,10 @@ struct khugepaged_settings { unsigned long pages_to_scan; }; +struct shmem_hugepages_settings { + enum shmem_enabled enabled; +}; + struct thp_settings { enum thp_enabled thp_enabled; enum thp_defrag thp_defrag; @@ -54,6 +59,7 @@ struct thp_settings { struct khugepaged_settings khugepaged; unsigned long read_ahead_kb; struct hugepages_settings hugepages[NR_ORDERS]; + struct shmem_hugepages_settings shmem_hugepages[NR_ORDERS]; }; int read_file(const char *path, char *buf, size_t buflen); @@ -76,5 +82,6 @@ void thp_save_settings(void); void thp_set_read_ahead_path(char *path); unsigned long thp_supported_orders(void); +unsigned long thp_shmem_supported_orders(void); #endif /* __THP_SETTINGS_H__ */ -- cgit v1.2.3