robbiew | 9a1e0a3 | 2004-04-19 21:47:15 +0000 | [diff] [blame] | 1 | /* |
| 2 | * |
| 3 | * Copyright (c) International Business Machines Corp., 2004 |
| 4 | * |
| 5 | * This program is free software; you can redistribute it and/or modify |
| 6 | * it under the terms of the GNU General Public License as published by |
| 7 | * the Free Software Foundation; either version 2 of the License, or |
| 8 | * (at your option) any later version. |
| 9 | * |
| 10 | * This program is distributed in the hope that it will be useful, |
| 11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See |
| 13 | * the GNU General Public License for more details. |
| 14 | * |
| 15 | * You should have received a copy of the GNU General Public License |
| 16 | * along with this program; if not, write to the Free Software |
Wanlong Gao | 4548c6c | 2012-10-19 18:03:36 +0800 | [diff] [blame] | 17 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
robbiew | 9a1e0a3 | 2004-04-19 21:47:15 +0000 | [diff] [blame] | 18 | */ |
| 19 | |
| 20 | /* |
| 21 | * Test Name: hugemmap01 |
| 22 | * |
| 23 | * Test Description: |
| 24 | * Verify that, mmap() succeeds when used to map a file in a hugetlbfs. |
| 25 | * |
| 26 | * Expected Result: |
| 27 | * mmap() should succeed returning the address of the hugetlb mapped region. |
| 28 | * The number of free huge pages should decrease. |
| 29 | * |
| 30 | * Algorithm: |
| 31 | * Setup: |
| 32 | * Setup signal handling. |
| 33 | * Pause for SIGUSR1 if option specified. |
| 34 | * Create temporary directory. |
| 35 | * |
Wanlong Gao | a172abf | 2012-02-06 11:16:23 +0800 | [diff] [blame] | 36 | * Test: |
| 37 | * Loop if the proper options are given. |
| 38 | * Execute system call |
| 39 | * Check return code, if system call failed (return=-1) |
| 40 | * Log the errno and Issue a FAIL message. |
| 41 | * Cleanup: |
| 42 | * Print timing stats if options given |
| 43 | * Delete the temporary directory created. |
robbiew | 9a1e0a3 | 2004-04-19 21:47:15 +0000 | [diff] [blame] | 44 | * |
| 45 | * HISTORY |
Wanlong Gao | a172abf | 2012-02-06 11:16:23 +0800 | [diff] [blame] | 46 | * 04/2004 Written by Robbie Williamson |
robbiew | 9a1e0a3 | 2004-04-19 21:47:15 +0000 | [diff] [blame] | 47 | */ |
| 48 | |
Caspar Zhang | 79667fa | 2012-03-12 14:41:46 +0800 | [diff] [blame] | 49 | #include <sys/types.h> |
| 50 | #include <sys/mman.h> |
| 51 | #include <sys/mount.h> |
| 52 | #include <sys/stat.h> |
robbiew | 9a1e0a3 | 2004-04-19 21:47:15 +0000 | [diff] [blame] | 53 | #include <errno.h> |
robbiew | 9a1e0a3 | 2004-04-19 21:47:15 +0000 | [diff] [blame] | 54 | #include <fcntl.h> |
robbiew | 9a1e0a3 | 2004-04-19 21:47:15 +0000 | [diff] [blame] | 55 | #include <signal.h> |
| 56 | #include <stdint.h> |
Caspar Zhang | 79667fa | 2012-03-12 14:41:46 +0800 | [diff] [blame] | 57 | #include <stdio.h> |
| 58 | #include <stdlib.h> |
| 59 | #include <string.h> |
| 60 | #include <unistd.h> |
robbiew | 9a1e0a3 | 2004-04-19 21:47:15 +0000 | [diff] [blame] | 61 | |
| 62 | #include "test.h" |
Wanlong Gao | 56d368c | 2012-02-10 11:16:22 +0800 | [diff] [blame] | 63 | #include "safe_macros.h" |
Caspar Zhang | 79667fa | 2012-03-12 14:41:46 +0800 | [diff] [blame] | 64 | #include "mem.h" |
robbiew | 9a1e0a3 | 2004-04-19 21:47:15 +0000 | [diff] [blame] | 65 | |
Wanlong Gao | d8728dc | 2012-02-09 21:58:00 +0800 | [diff] [blame] | 66 | static char TEMPFILE[MAXPATHLEN]; |
robbiew | 9a1e0a3 | 2004-04-19 21:47:15 +0000 | [diff] [blame] | 67 | |
Wanlong Gao | a172abf | 2012-02-06 11:16:23 +0800 | [diff] [blame] | 68 | char *TCID = "hugemmap01"; |
| 69 | int TST_TOTAL = 1; |
| 70 | static long *addr; |
| 71 | static int fildes; |
| 72 | static char *Hopt; |
Wanlong Gao | d8728dc | 2012-02-09 21:58:00 +0800 | [diff] [blame] | 73 | static char *nr_opt; |
Caspar Zhang | 51725fc | 2012-03-13 11:02:55 +0800 | [diff] [blame] | 74 | static long beforetest; |
| 75 | static long aftertest; |
| 76 | static long hugepagesmapped; |
Wanlong Gao | d8728dc | 2012-02-09 21:58:00 +0800 | [diff] [blame] | 77 | static long hugepages = 128; |
| 78 | static long orig_hugepages; |
robbiew | 9a1e0a3 | 2004-04-19 21:47:15 +0000 | [diff] [blame] | 79 | |
Wanlong Gao | a172abf | 2012-02-06 11:16:23 +0800 | [diff] [blame] | 80 | static void help(void); |
robbiew | 9a1e0a3 | 2004-04-19 21:47:15 +0000 | [diff] [blame] | 81 | |
Wanlong Gao | a172abf | 2012-02-06 11:16:23 +0800 | [diff] [blame] | 82 | int main(int ac, char **av) |
vapier | 5ccd613 | 2006-02-11 04:53:34 +0000 | [diff] [blame] | 83 | { |
Wanlong Gao | a172abf | 2012-02-06 11:16:23 +0800 | [diff] [blame] | 84 | int lc; |
Cyril Hrubis | 0b9589f | 2014-05-27 17:40:33 +0200 | [diff] [blame] | 85 | const char *msg; |
Wanlong Gao | a172abf | 2012-02-06 11:16:23 +0800 | [diff] [blame] | 86 | int Hflag = 0; |
Caspar Zhang | 51725fc | 2012-03-13 11:02:55 +0800 | [diff] [blame] | 87 | long page_sz = 0; |
Wanlong Gao | d8728dc | 2012-02-09 21:58:00 +0800 | [diff] [blame] | 88 | int sflag = 0; |
vapier | 5ccd613 | 2006-02-11 04:53:34 +0000 | [diff] [blame] | 89 | |
Wanlong Gao | a172abf | 2012-02-06 11:16:23 +0800 | [diff] [blame] | 90 | option_t options[] = { |
Wanlong Gao | 354ebb4 | 2012-12-07 10:10:04 +0800 | [diff] [blame] | 91 | {"H:", &Hflag, &Hopt}, |
| 92 | {"s:", &sflag, &nr_opt}, |
| 93 | {NULL, NULL, NULL} |
Wanlong Gao | a172abf | 2012-02-06 11:16:23 +0800 | [diff] [blame] | 94 | }; |
subrata_modak | 1e9bad9 | 2008-08-11 11:05:28 +0000 | [diff] [blame] | 95 | |
robbiew | 9a1e0a3 | 2004-04-19 21:47:15 +0000 | [diff] [blame] | 96 | msg = parse_opts(ac, av, options, &help); |
Wanlong Gao | a172abf | 2012-02-06 11:16:23 +0800 | [diff] [blame] | 97 | if (msg != NULL) |
| 98 | tst_brkm(TBROK, NULL, "OPTION PARSING ERROR - %s," |
| 99 | "use -help", msg); |
robbiew | 9a1e0a3 | 2004-04-19 21:47:15 +0000 | [diff] [blame] | 100 | |
Wanlong Gao | d8728dc | 2012-02-09 21:58:00 +0800 | [diff] [blame] | 101 | if (!Hflag) { |
| 102 | tst_tmpdir(); |
Cyril Hrubis | 9c31ad2 | 2014-05-14 17:15:39 +0200 | [diff] [blame] | 103 | Hopt = tst_get_tmpdir(); |
Wanlong Gao | d8728dc | 2012-02-09 21:58:00 +0800 | [diff] [blame] | 104 | } |
Wanlong Gao | 56d368c | 2012-02-10 11:16:22 +0800 | [diff] [blame] | 105 | if (sflag) |
| 106 | hugepages = SAFE_STRTOL(NULL, nr_opt, 0, LONG_MAX); |
subrata_modak | bdbaec5 | 2009-02-26 12:14:51 +0000 | [diff] [blame] | 107 | |
robbiew | 9a1e0a3 | 2004-04-19 21:47:15 +0000 | [diff] [blame] | 108 | setup(); |
| 109 | |
robbiew | 9a1e0a3 | 2004-04-19 21:47:15 +0000 | [diff] [blame] | 110 | for (lc = 0; TEST_LOOPING(lc); lc++) { |
Wanlong Gao | a172abf | 2012-02-06 11:16:23 +0800 | [diff] [blame] | 111 | /* Creat a temporary file used for mapping */ |
| 112 | fildes = open(TEMPFILE, O_RDWR | O_CREAT, 0666); |
| 113 | if (fildes < 0) |
Wanlong Gao | 354ebb4 | 2012-12-07 10:10:04 +0800 | [diff] [blame] | 114 | tst_brkm(TFAIL | TERRNO, cleanup, "open %s failed", |
Wanlong Gao | a172abf | 2012-02-06 11:16:23 +0800 | [diff] [blame] | 115 | TEMPFILE); |
Garrett Cooper | 2c28215 | 2010-12-16 00:55:50 -0800 | [diff] [blame] | 116 | |
Caspar Zhang | d59a659 | 2013-03-07 14:59:12 +0800 | [diff] [blame] | 117 | tst_count = 0; |
robbiew | 9a1e0a3 | 2004-04-19 21:47:15 +0000 | [diff] [blame] | 118 | |
| 119 | /* Note the number of free huge pages BEFORE testing */ |
Caspar Zhang | 51725fc | 2012-03-13 11:02:55 +0800 | [diff] [blame] | 120 | beforetest = read_meminfo("HugePages_Free:"); |
robbiew | 9a1e0a3 | 2004-04-19 21:47:15 +0000 | [diff] [blame] | 121 | |
subrata_modak | 1e9bad9 | 2008-08-11 11:05:28 +0000 | [diff] [blame] | 122 | /* Note the size of huge page size BEFORE testing */ |
Caspar Zhang | 51725fc | 2012-03-13 11:02:55 +0800 | [diff] [blame] | 123 | page_sz = read_meminfo("Hugepagesize:") * 1024; |
subrata_modak | 1e9bad9 | 2008-08-11 11:05:28 +0000 | [diff] [blame] | 124 | |
Caspar Zhang | 51725fc | 2012-03-13 11:02:55 +0800 | [diff] [blame] | 125 | addr = mmap(NULL, page_sz, PROT_READ | PROT_WRITE, |
robbiew | 9a1e0a3 | 2004-04-19 21:47:15 +0000 | [diff] [blame] | 126 | MAP_SHARED, fildes, 0); |
robbiew | 9a1e0a3 | 2004-04-19 21:47:15 +0000 | [diff] [blame] | 127 | if (addr == MAP_FAILED) { |
Wanlong Gao | 354ebb4 | 2012-12-07 10:10:04 +0800 | [diff] [blame] | 128 | tst_resm(TFAIL | TERRNO, "mmap() Failed on %s", |
| 129 | TEMPFILE); |
Wanlong Gao | d8728dc | 2012-02-09 21:58:00 +0800 | [diff] [blame] | 130 | close(fildes); |
robbiew | 9a1e0a3 | 2004-04-19 21:47:15 +0000 | [diff] [blame] | 131 | continue; |
| 132 | } else { |
Wanlong Gao | d8728dc | 2012-02-09 21:58:00 +0800 | [diff] [blame] | 133 | close(fildes); |
robbiew | 9a1e0a3 | 2004-04-19 21:47:15 +0000 | [diff] [blame] | 134 | tst_resm(TPASS, "call succeeded"); |
mreed10 | 8c6e72c | 2006-09-26 15:33:51 +0000 | [diff] [blame] | 135 | /* force to allocate page and change HugePages_Free */ |
Wanlong Gao | a172abf | 2012-02-06 11:16:23 +0800 | [diff] [blame] | 136 | *(int *)addr = 0; |
robbiew | 9a1e0a3 | 2004-04-19 21:47:15 +0000 | [diff] [blame] | 137 | } |
| 138 | |
Wanlong Gao | a172abf | 2012-02-06 11:16:23 +0800 | [diff] [blame] | 139 | /* |
| 140 | * Make sure the number of free huge pages |
| 141 | * AFTER testing decreased |
| 142 | */ |
Caspar Zhang | 51725fc | 2012-03-13 11:02:55 +0800 | [diff] [blame] | 143 | aftertest = read_meminfo("HugePages_Free:"); |
robbiew | 9a1e0a3 | 2004-04-19 21:47:15 +0000 | [diff] [blame] | 144 | hugepagesmapped = beforetest - aftertest; |
Wanlong Gao | a172abf | 2012-02-06 11:16:23 +0800 | [diff] [blame] | 145 | if (hugepagesmapped < 1) |
| 146 | tst_resm(TWARN, "Number of HUGEPAGES_FREE stayed the" |
| 147 | " same. Okay if multiple copies running due" |
| 148 | " to test collision."); |
| 149 | |
robbiew | 9a1e0a3 | 2004-04-19 21:47:15 +0000 | [diff] [blame] | 150 | /* Clean up things in case we are looping */ |
| 151 | /* Unmap the mapped memory */ |
Caspar Zhang | 51725fc | 2012-03-13 11:02:55 +0800 | [diff] [blame] | 152 | if (munmap(addr, page_sz) != 0) |
Wanlong Gao | 354ebb4 | 2012-12-07 10:10:04 +0800 | [diff] [blame] | 153 | tst_brkm(TFAIL | TERRNO, NULL, "munmap failed"); |
Wanlong Gao | a172abf | 2012-02-06 11:16:23 +0800 | [diff] [blame] | 154 | |
robbiew | 9a1e0a3 | 2004-04-19 21:47:15 +0000 | [diff] [blame] | 155 | close(fildes); |
Garrett Cooper | 2c28215 | 2010-12-16 00:55:50 -0800 | [diff] [blame] | 156 | } |
robbiew | 9a1e0a3 | 2004-04-19 21:47:15 +0000 | [diff] [blame] | 157 | |
robbiew | 9a1e0a3 | 2004-04-19 21:47:15 +0000 | [diff] [blame] | 158 | cleanup(); |
Caspar Zhang | 80dd742 | 2011-04-12 15:06:26 +0800 | [diff] [blame] | 159 | tst_exit(); |
Garrett Cooper | 2c28215 | 2010-12-16 00:55:50 -0800 | [diff] [blame] | 160 | } |
robbiew | 9a1e0a3 | 2004-04-19 21:47:15 +0000 | [diff] [blame] | 161 | |
Wanlong Gao | d8728dc | 2012-02-09 21:58:00 +0800 | [diff] [blame] | 162 | void setup(void) |
robbiew | 9a1e0a3 | 2004-04-19 21:47:15 +0000 | [diff] [blame] | 163 | { |
robbiew | 9a1e0a3 | 2004-04-19 21:47:15 +0000 | [diff] [blame] | 164 | TEST_PAUSE; |
Wanlong Gao | d8728dc | 2012-02-09 21:58:00 +0800 | [diff] [blame] | 165 | tst_require_root(NULL); |
| 166 | if (mount("none", Hopt, "hugetlbfs", 0, NULL) < 0) |
Wanlong Gao | 354ebb4 | 2012-12-07 10:10:04 +0800 | [diff] [blame] | 167 | tst_brkm(TBROK | TERRNO, NULL, "mount failed on %s", Hopt); |
robbiew | 9a1e0a3 | 2004-04-19 21:47:15 +0000 | [diff] [blame] | 168 | |
Wanlong Gao | d8728dc | 2012-02-09 21:58:00 +0800 | [diff] [blame] | 169 | orig_hugepages = get_sys_tune("nr_hugepages"); |
| 170 | set_sys_tune("nr_hugepages", hugepages, 1); |
Wanlong Gao | 354ebb4 | 2012-12-07 10:10:04 +0800 | [diff] [blame] | 171 | snprintf(TEMPFILE, sizeof(TEMPFILE), "%s/mmapfile%d", Hopt, getpid()); |
robbiew | 9a1e0a3 | 2004-04-19 21:47:15 +0000 | [diff] [blame] | 172 | } |
| 173 | |
Wanlong Gao | d8728dc | 2012-02-09 21:58:00 +0800 | [diff] [blame] | 174 | void cleanup(void) |
robbiew | 9a1e0a3 | 2004-04-19 21:47:15 +0000 | [diff] [blame] | 175 | { |
robbiew | 9a1e0a3 | 2004-04-19 21:47:15 +0000 | [diff] [blame] | 176 | unlink(TEMPFILE); |
Wanlong Gao | d8728dc | 2012-02-09 21:58:00 +0800 | [diff] [blame] | 177 | set_sys_tune("nr_hugepages", orig_hugepages, 0); |
robbiew | 9a1e0a3 | 2004-04-19 21:47:15 +0000 | [diff] [blame] | 178 | |
Wanlong Gao | d8728dc | 2012-02-09 21:58:00 +0800 | [diff] [blame] | 179 | umount(Hopt); |
| 180 | tst_rmdir(); |
Caspar Zhang | 80dd742 | 2011-04-12 15:06:26 +0800 | [diff] [blame] | 181 | } |
Wanlong Gao | a172abf | 2012-02-06 11:16:23 +0800 | [diff] [blame] | 182 | |
| 183 | static void help(void) |
| 184 | { |
| 185 | printf(" -H /.. Location of hugetlbfs, i.e. -H /var/hugetlbfs\n"); |
Wanlong Gao | d8728dc | 2012-02-09 21:58:00 +0800 | [diff] [blame] | 186 | printf(" -s num Set the number of the been allocated hugepages\n"); |
Wanlong Gao | a172abf | 2012-02-06 11:16:23 +0800 | [diff] [blame] | 187 | } |