1 /* 2 * Out Of Memory (OOM) for Memory Resource Controller 3 * 4 * The program is designed to cope with unpredictable like amount and 5 * system physical memory, swap size and other VMM technology like KSM, 6 * memcg, memory hotplug and so on which may affect the OOM 7 * behaviours. It simply increase the memory consumption 3G each time 8 * until all the available memory is consumed and OOM is triggered. 9 * 10 * Copyright (C) 2010 Red Hat, Inc. 11 * This program is free software; you can redistribute it and/or 12 * modify it under the terms of version 2 of the GNU General Public 13 * License as published by the Free Software Foundation. 14 * 15 * This program is distributed in the hope that it would be useful, 16 * but WITHOUT ANY WARRANTY; without even the implied warranty of 17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. 18 * 19 * Further, this software is distributed without any warranty that it 20 * is free of the rightful claim of any third person regarding 21 * infringement or the like. Any license provided herein, whether 22 * implied or otherwise, applies only to this software file. Patent 23 * licenses, if any, provided herein do not apply to combinations of 24 * this program with other software, or any other product whatsoever. 25 * 26 * You should have received a copy of the GNU General Public License 27 * along with this program; if not, write the Free Software 28 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 29 * 02110-1301, USA. 30 */ 31 #include <sys/types.h> 32 #include <sys/stat.h> 33 #include <errno.h> 34 #include <fcntl.h> 35 #include <stdio.h> 36 #include "numa_helper.h" 37 #include "test.h" 38 #include "mem.h" 39 40 char *TCID = "oom03"; 41 int TST_TOTAL = 1; 42 43 #if HAVE_NUMA_H && HAVE_LINUX_MEMPOLICY_H && HAVE_NUMAIF_H \ 44 && HAVE_MPOL_CONSTANTS 45 46 int main(int argc, char *argv[]) 47 { 48 int lc; 49 50 tst_parse_opts(argc, argv, NULL, NULL); 51 52 #if __WORDSIZE == 32 53 tst_brkm(TCONF, NULL, "test is not designed for 32-bit system."); 54 #endif 55 56 setup(); 57 58 for (lc = 0; TEST_LOOPING(lc); lc++) { 59 tst_count = 0; 60 61 SAFE_FILE_PRINTF(cleanup, MEMCG_PATH_NEW "/tasks", 62 "%d", getpid()); 63 SAFE_FILE_PRINTF(cleanup, MEMCG_LIMIT, "%ld", TESTMEM); 64 65 testoom(0, 0, ENOMEM, 1); 66 67 if (access(MEMCG_SW_LIMIT, F_OK) == -1) { 68 if (errno == ENOENT) 69 tst_resm(TCONF, 70 "memcg swap accounting is disabled"); 71 else 72 tst_brkm(TBROK | TERRNO, cleanup, "access"); 73 } else { 74 SAFE_FILE_PRINTF(cleanup, MEMCG_SW_LIMIT, 75 "%ld", TESTMEM); 76 testoom(0, 1, ENOMEM, 1); 77 } 78 79 /* OOM for MEMCG with mempolicy */ 80 if (is_numa(cleanup, NH_MEMS, 2)) { 81 tst_resm(TINFO, "OOM on MEMCG & mempolicy..."); 82 testoom(MPOL_BIND, 0, ENOMEM, 1); 83 testoom(MPOL_INTERLEAVE, 0, ENOMEM, 1); 84 testoom(MPOL_PREFERRED, 0, ENOMEM, 1); 85 } 86 } 87 cleanup(); 88 tst_exit(); 89 } 90 91 void setup(void) 92 { 93 tst_require_root(); 94 tst_sig(FORK, DEF_HANDLER, cleanup); 95 TEST_PAUSE; 96 97 overcommit = get_sys_tune("overcommit_memory"); 98 set_sys_tune("overcommit_memory", 1, 1); 99 mount_mem("memcg", "cgroup", "memory", MEMCG_PATH, MEMCG_PATH_NEW); 100 } 101 102 void cleanup(void) 103 { 104 set_sys_tune("overcommit_memory", overcommit, 0); 105 umount_mem(MEMCG_PATH, MEMCG_PATH_NEW); 106 } 107 108 #else 109 int main(void) 110 { 111 tst_brkm(TCONF, NULL, "no NUMA development packages installed."); 112 } 113 #endif 114
