This disables the "smart scan" KSM feature to make sure that the volatile count remains at 0. Signed-off-by: Stefan Roesch <devkernel.io> Reported-by: kernel test robot <oliver.sang@xxxxxxxxx> Closes: https://lore.kernel.org/oe-lkp/202311161132.13d8ce5a-oliver.sang@xxxxxxxxx --- testcases/kernel/mem/lib/mem.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/testcases/kernel/mem/lib/mem.c b/testcases/kernel/mem/lib/mem.c index fbfeef026..ef274a3ac 100644 --- a/testcases/kernel/mem/lib/mem.c +++ b/testcases/kernel/mem/lib/mem.c @@ -454,6 +454,9 @@ void create_same_memory(int size, int num, int unit) {'a', size*MB}, {'a', size*MB}, {'d', size*MB}, {'d', size*MB}, }; + /* Disable smart scan for correct volatile counts. */ + SAFE_FILE_PRINTF(PATH_KSM "smart_scan", "0"); + ps = sysconf(_SC_PAGE_SIZE); pages = MB / ps; @@ -526,6 +529,7 @@ void create_same_memory(int size, int num, int unit) tst_res(TINFO, "stop KSM."); SAFE_FILE_PRINTF(PATH_KSM "run", "0"); + SAFE_FILE_PRINTF(PATH_KSM "smart_scan", "1"); final_group_check(0, 0, 0, 0, 0, 0, size * pages * num); while (waitpid(-1, &status, 0) > 0) base-commit: 8c89ef3d451087ed6e18750bd5eedd10e5ab3d2e -- 2.39.3
