1 /* 2 * Out Of Memory (OOM) for mempolicy - need NUMA system support 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 32 #include "config.h" 33 #include <sys/types.h> 34 #include <sys/stat.h> 35 #include <errno.h> 36 #include <fcntl.h> 37 #include <stdio.h> 38 #include "numa_helper.h" 39 #include "test.h" 40 #include "mem.h" 41 42 char *TCID = "oom02"; 43 int TST_TOTAL = 1; 44 45 #if HAVE_NUMA_H && HAVE_LINUX_MEMPOLICY_H && HAVE_NUMAIF_H \ 46 && HAVE_MPOL_CONSTANTS 47 48 int main(int argc, char *argv[]) 49 { 50 int lc; 51 52 tst_parse_opts(argc, argv, NULL, NULL); 53 54 #if __WORDSIZE == 32 55 tst_brkm(TCONF, NULL, "test is not designed for 32-bit system."); 56 #endif 57 58 setup(); 59 60 for (lc = 0; TEST_LOOPING(lc); lc++) { 61 tst_count = 0; 62 63 tst_resm(TINFO, "OOM on MPOL_BIND mempolicy..."); 64 testoom(MPOL_BIND, 0, ENOMEM, 1); 65 66 tst_resm(TINFO, "OOM on MPOL_INTERLEAVE mempolicy..."); 67 testoom(MPOL_INTERLEAVE, 0, ENOMEM, 1); 68 69 tst_resm(TINFO, "OOM on MPOL_PREFERRED mempolicy..."); 70 testoom(MPOL_PREFERRED, 0, ENOMEM, 1); 71 } 72 cleanup(); 73 tst_exit(); 74 } 75 76 void setup(void) 77 { 78 tst_require_root(); 79 tst_sig(FORK, DEF_HANDLER, cleanup); 80 TEST_PAUSE; 81 82 if (!is_numa(NULL, NH_MEMS, 2)) 83 tst_brkm(TCONF, NULL, "The case need a NUMA system."); 84 85 overcommit = get_sys_tune("overcommit_memory"); 86 set_sys_tune("overcommit_memory", 1, 1); 87 } 88 89 void cleanup(void) 90 { 91 set_sys_tune("overcommit_memory", overcommit, 0); 92 } 93 94 #else /* no NUMA */ 95 int main(void) 96 { 97 tst_brkm(TCONF, NULL, "no NUMA development packages installed."); 98 } 99 #endif 100
