| /* |
| * Out Of Memory (OOM) for MEMCG and CPUSET |
| * |
| * The program is designed to cope with unpredictable like amount and |
| * system physical memory, swap size and other VMM technology like KSM, |
| * memcg, memory hotplug and so on which may affect the OOM |
| * behaviours. It simply increase the memory consumption 3G each time |
| * until all the available memory is consumed and OOM is triggered. |
| * |
| * Copyright (C) 2013 Red Hat, Inc. |
| * This program is free software; you can redistribute it and/or |
| * modify it under the terms of version 2 of the GNU General Public |
| * License as published by the Free Software Foundation. |
| * |
| * This program is distributed in the hope that it would be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. |
| * |
| * Further, this software is distributed without any warranty that it |
| * is free of the rightful claim of any third person regarding |
| * infringement or the like. Any license provided herein, whether |
| * implied or otherwise, applies only to this software file. Patent |
| * licenses, if any, provided herein do not apply to combinations of |
| * this program with other software, or any other product whatsoever. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; if not, write the Free Software |
| * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
| * 02110-1301, USA. |
| */ |
| |
| #include "config.h" |
| #include <sys/types.h> |
| #include <sys/stat.h> |
| #include <errno.h> |
| #include <fcntl.h> |
| #include <stdio.h> |
| #include "numa_helper.h" |
| #include "test.h" |
| #include "mem.h" |
| |
| char *TCID = "oom05"; |
| int TST_TOTAL = 1; |
| |
| #if HAVE_NUMA_H && HAVE_LINUX_MEMPOLICY_H && HAVE_NUMAIF_H \ |
| && HAVE_MPOL_CONSTANTS |
| |
| int main(int argc, char *argv[]) |
| { |
| int lc; |
| int swap_acc_on = 1; |
| |
| tst_parse_opts(argc, argv, NULL, NULL); |
| |
| #if __WORDSIZE == 32 |
| tst_brkm(TCONF, NULL, "test is not designed for 32-bit system."); |
| #endif |
| |
| setup(); |
| |
| for (lc = 0; TEST_LOOPING(lc); lc++) { |
| tst_count = 0; |
| |
| tst_resm(TINFO, "OOM on CPUSET & MEMCG..."); |
| testoom(0, 0, ENOMEM, 1); |
| |
| /* |
| * Under NUMA system, the migration of cpuset's memory |
| * is in charge of cpuset.memory_migrate, we can write |
| * 1 to cpuset.memory_migrate to enable the migration. |
| */ |
| if (is_numa(cleanup)) { |
| write_cpuset_files(CPATH_NEW, "memory_migrate", "1"); |
| tst_resm(TINFO, "OOM on CPUSET & MEMCG with " |
| "cpuset.memory_migrate=1"); |
| testoom(0, 0, ENOMEM, 1); |
| } |
| |
| if (access(MEMCG_SW_LIMIT, F_OK) == -1) { |
| if (errno == ENOENT) { |
| tst_resm(TCONF, |
| "memcg swap accounting is disabled"); |
| swap_acc_on = 0; |
| } else |
| tst_brkm(TBROK|TERRNO, cleanup, "access"); |
| } |
| |
| if (swap_acc_on) { |
| tst_resm(TINFO, "OOM on CPUSET & MEMCG with " |
| "special memswap limitation:"); |
| SAFE_FILE_PRINTF(cleanup, MEMCG_SW_LIMIT, "%ld", TESTMEM); |
| testoom(0, 0, ENOMEM, 1); |
| |
| tst_resm(TINFO, "OOM on CPUSET & MEMCG with " |
| "disabled memswap limitation:"); |
| SAFE_FILE_PRINTF(cleanup, MEMCG_SW_LIMIT, "-1"); |
| testoom(0, 0, ENOMEM, 1); |
| } |
| } |
| |
| cleanup(); |
| tst_exit(); |
| } |
| |
| void setup(void) |
| { |
| int ret, memnode; |
| |
| tst_require_root(); |
| tst_sig(FORK, DEF_HANDLER, cleanup); |
| TEST_PAUSE; |
| |
| overcommit = get_sys_tune("overcommit_memory"); |
| set_sys_tune("overcommit_memory", 1, 1); |
| |
| mount_mem("memcg", "cgroup", "memory", MEMCG_PATH, MEMCG_PATH_NEW); |
| mount_mem("cpuset", "cpuset", NULL, CPATH, CPATH_NEW); |
| write_memcg(); |
| |
| /* |
| * Some nodes do not contain memory, so use |
| * get_allowed_nodes(NH_MEMS) to get a memory |
| * node. This operation also applies to Non-NUMA |
| * systems. |
| */ |
| ret = get_allowed_nodes(NH_MEMS, 1, &memnode); |
| if (ret < 0) |
| tst_brkm(TBROK, cleanup, "Failed to get a memory node " |
| "using get_allowed_nodes()"); |
| write_cpusets(memnode); |
| } |
| |
| void cleanup(void) |
| { |
| set_sys_tune("overcommit_memory", overcommit, 0); |
| umount_mem(CPATH, CPATH_NEW); |
| umount_mem(MEMCG_PATH, MEMCG_PATH_NEW); |
| } |
| |
| #else /* no NUMA */ |
| int main(void) |
| { |
| tst_brkm(TCONF, NULL, "no NUMA development packages installed."); |
| } |
| #endif |