diff options
Diffstat (limited to 'testcases/kernel/mem/ksm/ksm04.c')
| -rw-r--r-- | testcases/kernel/mem/ksm/ksm04.c | 37 |
1 files changed, 12 insertions, 25 deletions
diff --git a/testcases/kernel/mem/ksm/ksm04.c b/testcases/kernel/mem/ksm/ksm04.c index 4f1f2f721..f558b23be 100644 --- a/testcases/kernel/mem/ksm/ksm04.c +++ b/testcases/kernel/mem/ksm/ksm04.c @@ -1,34 +1,19 @@ +// SPDX-License-Identifier: GPL-2.0-or-later /* * Copyright (C) 2010-2017 Red Hat, Inc. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See - * the GNU General Public License for more details. - * - * Kernel Samepage Merging (KSM) for Memory Resource Controller and NUMA - * - * Basic tests were to start several programs with same and different - * memory contents and ensure only to merge the ones with the same - * contents. When changed the content of one of merged pages in a - * process and to the mode "unmerging", it should discard all merged - * pages there. Also tested it is possible to disable KSM. There are - * also command-line options to specify the memory allocation size, and - * number of processes have same memory contents so it is possible to - * test more advanced things like KSM + OOM etc. + */ + +/*\ + * [Description] * * Prerequisites: * - * 1) ksm and ksmtuned daemons need to be disabled. Otherwise, it could - * distrub the testing as they also change some ksm tunables depends - * on current workloads. + * ksm and ksmtuned daemons need to be disabled. Otherwise, it could + * distrub the testing as they also change some ksm tunables depends + * on current workloads. + * + * [Algorithm] * - * The test steps are: * - Check ksm feature and backup current run setting. * - Change run setting to 1 - merging. * - 3 memory allocation programs have the memory contents that 2 of @@ -109,6 +94,8 @@ static struct tst_test test = { TST_SR_SKIP_MISSING | TST_SR_TCONF_RO}, {"/sys/kernel/mm/ksm/merge_across_nodes", "1", TST_SR_SKIP_MISSING | TST_SR_TCONF_RO}, + {"/sys/kernel/mm/ksm/smart_scan", "0", + TST_SR_SKIP_MISSING | TST_SR_TBROK_RO}, {} }, .needs_kconfigs = (const char *const[]){ |