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
72 void setup(void);
73 void cleanup(void);
74
75 char *TCID = "move_pages04";
76 int TST_TOTAL = 1;
77
78 typedef void (*sighandler_t) (int);
79
main(int argc,char ** argv)80 int 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 } else if (ret > 0) {
135 tst_resm(TINFO, "move_pages() returned %d\n", ret);
136 }
137
138 if (status[UNTOUCHED_PAGE] == exp_status) {
139 tst_resm(TPASS, "status[%d] has expected value",
140 UNTOUCHED_PAGE);
141 } else {
142 tst_resm(TFAIL, "status[%d] is %s, expected %s",
143 UNTOUCHED_PAGE,
144 tst_strerrno(-status[UNTOUCHED_PAGE]),
145 tst_strerrno(-exp_status));
146 }
147
148 err_free_pages:
149 /* This is capable of freeing both the touched and
150 * untouched pages.
151 */
152 free_pages(pages, TEST_PAGES);
153 }
154 #else
155 tst_resm(TCONF, NUMA_ERROR_MSG);
156 #endif
157
158 cleanup();
159 tst_exit();
160 }
161
162 /*
163 * setup() - performs all ONE TIME setup for this test
164 */
setup(void)165 void setup(void)
166 {
167
168 tst_sig(FORK, DEF_HANDLER, cleanup);
169
170 check_config(TEST_NODES);
171
172 /* Pause if that option was specified
173 * TEST_PAUSE contains the code to fork the test with the -c option.
174 */
175 TEST_PAUSE;
176 }
177
178 /*
179 * cleanup() - performs all ONE TIME cleanup for this test at completion
180 */
cleanup(void)181 void cleanup(void)
182 {
183
184 }
185