1/* 2 * Copyright (c) 2008 Vijay Kumar B. <vijaykumar@bravegnu.org> 3 * 4 * Based on testcases/kernel/syscalls/waitpid/waitpid01.c 5 * Original copyright message: 6 * 7 * Copyright (c) International Business Machines Corp., 2001 8 * 9 * This program is free software; you can redistribute it and/or modify 10 * it under the terms of the GNU General Public License as published by 11 * the Free Software Foundation; either version 2 of the License, or 12 * (at your option) any later version. 13 * 14 * This program is distributed in the hope that it will be useful, 15 * but WITHOUT ANY WARRANTY; without even the implied warranty of 16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See 17 * the GNU General Public License for more details. 18 * 19 * You should have received a copy of the GNU General Public License 20 * along with this program; if not, write to the Free Software 21 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 22 */ 23 24/* 25 * NAME 26 * move_pages04.c 27 * 28 * DESCRIPTION 29 * Failure when page does not exit. 30 * 31 * ALGORITHM 32 * 33 * 1. Pass zero page (allocated, but not written to) as one of the 34 * page addresses to move_pages(). 35 * 2. Check if the corresponding status is set to: 36 * -ENOENT for kernels < 4.3 37 * -EFAULT for kernels >= 4.3 [1] 38 * 39 * [1] 40 * d899844e9c98 "mm: fix status code which move_pages() returns for zero page" 41 * 42 * USAGE: <for command-line> 43 * move_pages04 [-c n] [-i n] [-I x] [-P x] [-t] 44 * where, -c n : Run n copies concurrently. 45 * -i n : Execute test n times. 46 * -I x : Execute test for x seconds. 47 * -P x : Pause for x seconds between iterations. 48 * -t : Turn on syscall timing. 49 * 50 * History 51 * 05/2008 Vijay Kumar 52 * Initial Version. 53 * 54 * Restrictions 55 * None 56 */ 57 58#include <sys/mman.h> 59#include <sys/types.h> 60#include <sys/wait.h> 61#include <unistd.h> 62#include <signal.h> 63#include <errno.h> 64#include "test.h" 65#include "move_pages_support.h" 66 67#define TEST_PAGES 2 68#define TEST_NODES 2 69#define TOUCHED_PAGES 1 70#define UNTOUCHED_PAGE (TEST_PAGES - 1) 71 72void setup(void); 73void cleanup(void); 74 75char *TCID = "move_pages04"; 76int TST_TOTAL = 1; 77 78typedef void (*sighandler_t) (int); 79 80int main(int argc, char **argv) 81{ 82 83 tst_parse_opts(argc, argv, NULL, NULL); 84 85 setup(); 86 87#ifdef HAVE_NUMA_V2 88 unsigned int i; 89 int lc; 90 unsigned int from_node; 91 unsigned int to_node; 92 int ret, exp_status; 93 94 if ((tst_kvercmp(4, 3, 0)) >= 0) 95 exp_status = -EFAULT; 96 else 97 exp_status = -ENOENT; 98 99 ret = get_allowed_nodes(NH_MEMS, 2, &from_node, &to_node); 100 if (ret < 0) 101 tst_brkm(TBROK | TERRNO, cleanup, "get_allowed_nodes: %d", ret); 102 103 /* check for looping state if -i option is given */ 104 for (lc = 0; TEST_LOOPING(lc); lc++) { 105 void *pages[TEST_PAGES] = { 0 }; 106 int nodes[TEST_PAGES]; 107 int status[TEST_PAGES]; 108 unsigned long onepage = get_page_size(); 109 110 /* reset tst_count in case we are looping */ 111 tst_count = 0; 112 113 ret = alloc_pages_on_node(pages, TOUCHED_PAGES, from_node); 114 if (ret == -1) 115 continue; 116 117 /* Allocate page and do not touch it. */ 118 pages[UNTOUCHED_PAGE] = numa_alloc_onnode(onepage, from_node); 119 if (pages[UNTOUCHED_PAGE] == NULL) { 120 tst_resm(TBROK, "failed allocating page on node %d", 121 from_node); 122 goto err_free_pages; 123 } 124 125 for (i = 0; i < TEST_PAGES; i++) 126 nodes[i] = to_node; 127 128 ret = numa_move_pages(0, TEST_PAGES, pages, nodes, 129 status, MPOL_MF_MOVE); 130 if (ret == -1) { 131 tst_resm(TFAIL | TERRNO, 132 "move_pages unexpectedly failed"); 133 goto err_free_pages; 134 } 135 136 if (status[UNTOUCHED_PAGE] == exp_status) { 137 tst_resm(TPASS, "status[%d] has expected value", 138 UNTOUCHED_PAGE); 139 } else { 140 tst_resm(TFAIL, "status[%d] is %s, expected %s", 141 UNTOUCHED_PAGE, 142 tst_strerrno(-status[UNTOUCHED_PAGE]), 143 tst_strerrno(-exp_status)); 144 } 145 146err_free_pages: 147 /* This is capable of freeing both the touched and 148 * untouched pages. 149 */ 150 free_pages(pages, TEST_PAGES); 151 } 152#else 153 tst_resm(TCONF, "test requires libnuma >= 2 and it's development packages"); 154#endif 155 156 cleanup(); 157 tst_exit(); 158 159} 160 161/* 162 * setup() - performs all ONE TIME setup for this test 163 */ 164void setup(void) 165{ 166 167 tst_sig(FORK, DEF_HANDLER, cleanup); 168 169 check_config(TEST_NODES); 170 171 /* Pause if that option was specified 172 * TEST_PAUSE contains the code to fork the test with the -c option. 173 */ 174 TEST_PAUSE; 175} 176 177/* 178 * cleanup() - performs all ONE TIME cleanup for this test at completion 179 */ 180void cleanup(void) 181{ 182 183} 184