diff options
| author | Wei Yang <richard.weiyang@gmail.com> | 2025-08-19 08:00:46 +0000 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2025-09-13 16:55:13 -0700 |
| commit | b27f292de6b1a39e9fb0f83c79dfe902a9ea86c3 (patch) | |
| tree | 43354213ec489c240b0f13b585509014aa82213c /tools/testing/selftests/mm/vm_util.h | |
| parent | 63ec0c26b682ca235953490dfa82b8fa4d4ab4a0 (diff) | |
selftests/mm: put general ksm operation into vm_util
Patch series "test that rmap behaves as expected", v4.
As David suggested, currently we don't have a high level test case to
verify the behavior of rmap. This patch set introduce the verification
on rmap by migration.
Patch 1 is a preparation to move ksm related operations into vm_util.
Patch 2 is the new test case for rmap.
Currently it covers following four scenarios:
* anonymous page
* shmem page
* pagecache page
* ksm page
This patch (of 2):
There are some general ksm operations could be used by other related
test cases. Put them into vm_util for common use.
This is a preparation patch for later use.
Link: https://lkml.kernel.org/r/20250819080047.10063-1-richard.weiyang@gmail.com
Link: https://lkml.kernel.org/r/20250819080047.10063-2-richard.weiyang@gmail.com
Signed-off-by: Wei Yang <richard.weiyang@gmail.com>
Suggested-by: David Hildenbrand <david@redhat.com>
Cc: David Hildenbrand <david@redhat.com>
Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
Cc: Rik van Riel <riel@surriel.com>
Cc: Liam R. Howlett <Liam.Howlett@oracle.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Harry Yoo <harry.yoo@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'tools/testing/selftests/mm/vm_util.h')
| -rw-r--r-- | tools/testing/selftests/mm/vm_util.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/tools/testing/selftests/mm/vm_util.h b/tools/testing/selftests/mm/vm_util.h index ab8722f482ae..07c4acfd84b6 100644 --- a/tools/testing/selftests/mm/vm_util.h +++ b/tools/testing/selftests/mm/vm_util.h @@ -139,6 +139,13 @@ static inline int sz2ord(size_t size, size_t pagesize) void *sys_mremap(void *old_address, unsigned long old_size, unsigned long new_size, int flags, void *new_address); +long ksm_get_self_zero_pages(void); +long ksm_get_self_merging_pages(void); +long ksm_get_full_scans(void); +int ksm_use_zero_pages(void); +int ksm_start(void); +int ksm_stop(void); + /* * On ppc64 this will only work with radix 2M hugepage size */ |