robbiew | c44203a | 2003-01-10 18:05:10 +0000 | [diff] [blame] | 1 | /* IBM Corporation */ |
| 2 | /* 01/02/2003 Port to LTP avenakt@us.ibm.com */ |
| 3 | /* 06/30/2001 Port to Linux nsharoff@us.ibm.com */ |
Garrett Cooper | 2c28215 | 2010-12-16 00:55:50 -0800 | [diff] [blame] | 4 | /* |
robbiew | c44203a | 2003-01-10 18:05:10 +0000 | [diff] [blame] | 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. |
Garrett Cooper | 2c28215 | 2010-12-16 00:55:50 -0800 | [diff] [blame] | 9 | * |
robbiew | c44203a | 2003-01-10 18:05:10 +0000 | [diff] [blame] | 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 | c44203a | 2003-01-10 18:05:10 +0000 | [diff] [blame] | 18 | */ |
| 19 | |
| 20 | #define _GNU_SOURCE 1 |
| 21 | #include <sys/types.h> |
| 22 | #include <stdio.h> |
| 23 | #include <fcntl.h> |
| 24 | #include <signal.h> |
| 25 | #include <sys/mman.h> |
| 26 | #include <sys/wait.h> |
| 27 | #include <sys/stat.h> |
| 28 | #include <unistd.h> |
| 29 | #include <errno.h> |
| 30 | /***** LTP Port *****/ |
| 31 | #include "test.h" |
robbiew | c44203a | 2003-01-10 18:05:10 +0000 | [diff] [blame] | 32 | #define FAILED 0 |
| 33 | #define PASSED 1 |
| 34 | |
| 35 | int local_flag = PASSED; |
| 36 | char *TCID = "mmapstress09"; |
| 37 | FILE *temp; |
| 38 | int TST_TOTAL = 1; |
robbiew | c44203a | 2003-01-10 18:05:10 +0000 | [diff] [blame] | 39 | |
| 40 | int anyfail(); |
| 41 | void ok_exit(); |
| 42 | /***** ** ** *****/ |
| 43 | |
| 44 | /* |
| 45 | * This test is mostly duplicated from the tmmap test, but tests |
| 46 | * stress tests anonymous maps. It forks a specified number of children, |
| 47 | * who inherit an anonymous shared map, and who, make a given number of |
| 48 | * accesses to random pages in the map (reading & writing and comparing data). |
| 49 | * Then the child exits and the parent forks another to take its place. |
| 50 | * The test fails if a child sees incorrect data. |
| 51 | * |
| 52 | * This program continues to run until it either receives a SIGINT, |
| 53 | * or times out (if a timeout value is specified). When either of |
subrata_modak | 4bb656a | 2009-02-26 12:02:09 +0000 | [diff] [blame] | 54 | * these things happens, it cleans up its kids, then checks |
robbiew | c44203a | 2003-01-10 18:05:10 +0000 | [diff] [blame] | 55 | * the map to make sure it has the correct data. |
| 56 | * |
| 57 | * usage: |
| 58 | * mmapstress09 -p nprocs [-t minutes -s mapsize -m msync -r -d] |
| 59 | * |
| 60 | * where: |
| 61 | * -p nprocs - specifies the number of mapping children |
| 62 | * to create. (nprocs + 1 children actually |
| 63 | * get created, since one is the writer child) |
| 64 | * -t minutes - specifies minutes to run. If not specified, |
| 65 | * default is to run forever until a SIGINT |
| 66 | * is received. |
| 67 | * -s mapsize - mapsize (defaults to MAPSIZE) |
| 68 | * -m - do msyncs |
| 69 | * -r - randomize number of pages map children check. |
| 70 | * (random % MAXLOOPS). If not specified, each |
| 71 | * child checks MAXLOOPS pages. |
| 72 | * -d - enable debug outputd |
| 73 | */ |
| 74 | |
| 75 | #define MAXLOOPS 500 /* max pages for map children to write */ |
Wanlong Gao | 354ebb4 | 2012-12-07 10:10:04 +0800 | [diff] [blame] | 76 | #define MAPSIZE (64*1024) /* default mapsize set up by parent */ |
robbiew | 4be9098 | 2003-07-31 15:15:25 +0000 | [diff] [blame] | 77 | #ifdef roundup |
| 78 | #undef roundup |
| 79 | #endif |
robbiew | c44203a | 2003-01-10 18:05:10 +0000 | [diff] [blame] | 80 | #define roundup(x, y) ((((x)+((y)-1))/(y))*(y)) |
| 81 | #define min(x, y) (((x) < (y)) ? (x) : (y)) |
| 82 | |
Wanlong Gao | 354ebb4 | 2012-12-07 10:10:04 +0800 | [diff] [blame] | 83 | extern time_t time(time_t *); |
| 84 | extern char *ctime(const time_t *); |
robbiew | c44203a | 2003-01-10 18:05:10 +0000 | [diff] [blame] | 85 | extern void *malloc(size_t); |
| 86 | extern void exit(int); |
| 87 | extern long lrand48(void); |
| 88 | extern void srand(unsigned); |
| 89 | extern void srand48(long); |
Wanlong Gao | 354ebb4 | 2012-12-07 10:10:04 +0800 | [diff] [blame] | 90 | extern int rand(void); |
| 91 | extern int atoi(const char *); |
robbiew | c44203a | 2003-01-10 18:05:10 +0000 | [diff] [blame] | 92 | |
| 93 | typedef unsigned char uchar_t; |
| 94 | |
Wanlong Gao | 354ebb4 | 2012-12-07 10:10:04 +0800 | [diff] [blame] | 95 | char *usage = "-p nprocs [-t minutes -s mapsize -m -r -d]"; |
robbiew | c44203a | 2003-01-10 18:05:10 +0000 | [diff] [blame] | 96 | |
| 97 | unsigned int initrand(void); |
| 98 | void finish(int sig); |
| 99 | void child_mapper(unsigned procno, unsigned nprocs); |
Wanlong Gao | 354ebb4 | 2012-12-07 10:10:04 +0800 | [diff] [blame] | 100 | int mapokay(uchar_t * expbuf); |
robbiew | c44203a | 2003-01-10 18:05:10 +0000 | [diff] [blame] | 101 | |
| 102 | int finished = 0; |
| 103 | int debug = 0; |
| 104 | int mapsize = MAPSIZE; |
| 105 | unsigned mappages; |
| 106 | int pagesize; |
| 107 | unsigned randloops = 0; |
| 108 | unsigned dosync = 0; |
| 109 | unsigned pattern = 0; |
| 110 | caddr_t mapaddr; |
| 111 | |
Wanlong Gao | 354ebb4 | 2012-12-07 10:10:04 +0800 | [diff] [blame] | 112 | int main(int argc, char *argv[]) |
robbiew | c44203a | 2003-01-10 18:05:10 +0000 | [diff] [blame] | 113 | { |
| 114 | char *progname; |
| 115 | unsigned c; |
| 116 | extern char *optarg; |
| 117 | unsigned nprocs = 0; |
| 118 | unsigned procno; |
Wanlong Gao | 354ebb4 | 2012-12-07 10:10:04 +0800 | [diff] [blame] | 119 | pid_t *pidarray = NULL; |
robbiew | c44203a | 2003-01-10 18:05:10 +0000 | [diff] [blame] | 120 | pid_t pid; |
| 121 | uchar_t *buf, *ptr; |
| 122 | unsigned int seed; |
subrata_modak | ae1b395 | 2008-10-30 03:53:09 +0000 | [diff] [blame] | 123 | float alarmtime = 0; |
robbiew | c44203a | 2003-01-10 18:05:10 +0000 | [diff] [blame] | 124 | struct sigaction sa; |
| 125 | unsigned i, j; |
| 126 | uchar_t data; |
| 127 | int no_prob = 0; |
| 128 | time_t t; |
| 129 | int wait_stat; |
| 130 | |
| 131 | progname = *argv; |
| 132 | pagesize = sysconf(_SC_PAGE_SIZE); |
| 133 | |
| 134 | if (argc < 2) { |
| 135 | (void)fprintf(stderr, "usage: %s %s\n", progname, usage); |
| 136 | anyfail(); |
| 137 | } |
| 138 | |
| 139 | while ((c = getopt(argc, argv, "mdrp:t:s:")) != -1) { |
| 140 | switch (c) { |
| 141 | case 'd': |
| 142 | debug = 1; |
| 143 | break; |
| 144 | case 't': |
subrata_modak | ae1b395 | 2008-10-30 03:53:09 +0000 | [diff] [blame] | 145 | alarmtime = atof(optarg) * 60; |
robbiew | c44203a | 2003-01-10 18:05:10 +0000 | [diff] [blame] | 146 | break; |
| 147 | case 'p': |
| 148 | nprocs = atoi(optarg); |
| 149 | break; |
| 150 | case 'm': |
| 151 | dosync = 1; |
| 152 | break; |
| 153 | case 's': |
| 154 | mapsize = atoi(optarg); |
| 155 | if (mapsize < 0) { |
| 156 | (void)fprintf(stderr, "error: negative " |
Wanlong Gao | 354ebb4 | 2012-12-07 10:10:04 +0800 | [diff] [blame] | 157 | "mapsize\n"); |
| 158 | anyfail(); |
robbiew | c44203a | 2003-01-10 18:05:10 +0000 | [diff] [blame] | 159 | } |
| 160 | break; |
| 161 | case 'r': |
| 162 | randloops = 1; |
| 163 | break; |
| 164 | default: |
| 165 | (void)fprintf(stderr, "usage: %s %s\n", progname, |
Wanlong Gao | 354ebb4 | 2012-12-07 10:10:04 +0800 | [diff] [blame] | 166 | usage); |
| 167 | anyfail(); |
robbiew | c44203a | 2003-01-10 18:05:10 +0000 | [diff] [blame] | 168 | } |
| 169 | } |
| 170 | |
| 171 | /* nprocs is unsigned */ |
| 172 | if (nprocs > 255) { |
| 173 | (void)fprintf(stderr, "invalid nprocs %d - (range 0-255)\n", |
Wanlong Gao | 354ebb4 | 2012-12-07 10:10:04 +0800 | [diff] [blame] | 174 | nprocs); |
| 175 | anyfail(); |
robbiew | c44203a | 2003-01-10 18:05:10 +0000 | [diff] [blame] | 176 | } |
| 177 | (void)time(&t); |
Wanlong Gao | 354ebb4 | 2012-12-07 10:10:04 +0800 | [diff] [blame] | 178 | // (void)printf("%s: Started %s", argv[0], ctime(&t)); LTP Port |
robbiew | c44203a | 2003-01-10 18:05:10 +0000 | [diff] [blame] | 179 | |
| 180 | seed = initrand(); |
| 181 | pattern = seed & 0xff; |
| 182 | |
| 183 | if (debug) { |
subrata_modak | 4bb656a | 2009-02-26 12:02:09 +0000 | [diff] [blame] | 184 | (void)printf("%s mapsize %d bytes, pattern %d\n", |
Wanlong Gao | 354ebb4 | 2012-12-07 10:10:04 +0800 | [diff] [blame] | 185 | progname, mapsize, pattern); |
robbiew | c44203a | 2003-01-10 18:05:10 +0000 | [diff] [blame] | 186 | if (alarmtime) |
Wanlong Gao | 354ebb4 | 2012-12-07 10:10:04 +0800 | [diff] [blame] | 187 | (void)printf("running for %f minutes\n", |
| 188 | alarmtime / 60); |
robbiew | c44203a | 2003-01-10 18:05:10 +0000 | [diff] [blame] | 189 | else |
| 190 | (void)printf("running with no time limit\n"); |
| 191 | } |
| 192 | |
Wanlong Gao | 354ebb4 | 2012-12-07 10:10:04 +0800 | [diff] [blame] | 193 | if ((mapaddr = mmap(0, mapsize, PROT_READ | PROT_WRITE, |
| 194 | MAP_ANONYMOUS | MAP_SHARED, 0, 0)) |
| 195 | == (caddr_t) - 1) { |
robbiew | c44203a | 2003-01-10 18:05:10 +0000 | [diff] [blame] | 196 | perror("mmap error"); |
Wanlong Gao | 354ebb4 | 2012-12-07 10:10:04 +0800 | [diff] [blame] | 197 | anyfail(); |
robbiew | c44203a | 2003-01-10 18:05:10 +0000 | [diff] [blame] | 198 | } |
| 199 | |
Cyril Hrubis | d218f34 | 2014-09-23 13:14:56 +0200 | [diff] [blame] | 200 | if ((buf = malloc(pagesize)) == NULL |
| 201 | || (pidarray = malloc(nprocs * sizeof(pid_t))) == NULL) { |
robbiew | c44203a | 2003-01-10 18:05:10 +0000 | [diff] [blame] | 202 | perror("malloc error"); |
Wanlong Gao | 354ebb4 | 2012-12-07 10:10:04 +0800 | [diff] [blame] | 203 | anyfail(); |
robbiew | c44203a | 2003-01-10 18:05:10 +0000 | [diff] [blame] | 204 | } |
| 205 | |
| 206 | for (i = 0; i < nprocs; i++) |
Wanlong Gao | 354ebb4 | 2012-12-07 10:10:04 +0800 | [diff] [blame] | 207 | *(pidarray + i) = 0; |
robbiew | c44203a | 2003-01-10 18:05:10 +0000 | [diff] [blame] | 208 | |
| 209 | /* |
| 210 | * Initialize page compare buffer, then initialize map. |
| 211 | */ |
| 212 | |
| 213 | for (i = 0, data = 0; i < pagesize; i++) { |
Wanlong Gao | 354ebb4 | 2012-12-07 10:10:04 +0800 | [diff] [blame] | 214 | *(buf + i) = (data + pattern) & 0xff; |
robbiew | c44203a | 2003-01-10 18:05:10 +0000 | [diff] [blame] | 215 | if (++data == nprocs) |
| 216 | data = 0; |
| 217 | } |
| 218 | |
Wanlong Gao | 354ebb4 | 2012-12-07 10:10:04 +0800 | [diff] [blame] | 219 | mappages = roundup(mapsize, pagesize) / pagesize; |
| 220 | ptr = (uchar_t *) mapaddr; |
robbiew | c44203a | 2003-01-10 18:05:10 +0000 | [diff] [blame] | 221 | |
| 222 | for (i = 0; i < mappages; i++) { |
| 223 | for (j = 0; j < pagesize; j++) |
Wanlong Gao | 354ebb4 | 2012-12-07 10:10:04 +0800 | [diff] [blame] | 224 | *ptr++ = *(buf + j); |
robbiew | c44203a | 2003-01-10 18:05:10 +0000 | [diff] [blame] | 225 | } |
| 226 | |
| 227 | /* |
| 228 | * Fork off mmap children. |
| 229 | */ |
| 230 | for (procno = 0; procno < nprocs; procno++) { |
| 231 | switch (pid = fork()) { |
| 232 | |
| 233 | case -1: |
| 234 | perror("fork error"); |
| 235 | goto cleanup; |
| 236 | |
| 237 | case 0: |
| 238 | child_mapper(procno, nprocs); |
| 239 | exit(0); |
| 240 | |
| 241 | default: |
| 242 | pidarray[procno] = pid; |
| 243 | } |
| 244 | } |
| 245 | |
| 246 | /* |
| 247 | * Plan for death by signal. User may have specified |
| 248 | * a time limit, in which set an alarm and catch SIGALRM. |
| 249 | * Also catch and cleanup with SIGINT. |
| 250 | */ |
| 251 | sa.sa_handler = finish; |
| 252 | sa.sa_flags = 0; |
| 253 | if (sigemptyset(&sa.sa_mask)) { |
| 254 | perror("sigemptyset error"); |
| 255 | goto cleanup; |
| 256 | } |
| 257 | |
| 258 | if (sigaction(SIGINT, &sa, 0) == -1) { |
| 259 | perror("sigaction error"); |
| 260 | goto cleanup; |
| 261 | } |
| 262 | |
| 263 | if (alarmtime) { |
| 264 | if (sigaction(SIGALRM, &sa, 0) == -1) { |
| 265 | perror("sigaction error"); |
| 266 | goto cleanup; |
| 267 | } |
| 268 | (void)alarm(alarmtime); |
| 269 | } |
| 270 | |
| 271 | /* |
| 272 | * Now wait for children and refork them as needed. |
| 273 | */ |
subrata_modak | bdbaec5 | 2009-02-26 12:14:51 +0000 | [diff] [blame] | 274 | |
robbiew | c44203a | 2003-01-10 18:05:10 +0000 | [diff] [blame] | 275 | while (!finished) { |
| 276 | do { |
| 277 | pid = wait(&wait_stat); |
| 278 | } while (pid == -1 && errno == EINTR); |
| 279 | /* |
| 280 | * Block signals while processing child exit. |
| 281 | */ |
| 282 | |
| 283 | if (sighold(SIGALRM) || sighold(SIGINT)) { |
| 284 | perror("sighold error"); |
| 285 | goto cleanup; |
| 286 | } |
| 287 | |
| 288 | if (pid != -1) { |
| 289 | /* |
| 290 | * Check exit status, then refork with the |
| 291 | * appropriate procno. |
| 292 | */ |
subrata_modak | 4bb656a | 2009-02-26 12:02:09 +0000 | [diff] [blame] | 293 | if (!WIFEXITED(wait_stat) |
robbiew | c44203a | 2003-01-10 18:05:10 +0000 | [diff] [blame] | 294 | || WEXITSTATUS(wait_stat) != 0) { |
| 295 | (void)fprintf(stderr, "child exit with err " |
Wanlong Gao | 354ebb4 | 2012-12-07 10:10:04 +0800 | [diff] [blame] | 296 | "<x%x>\n", wait_stat); |
robbiew | c44203a | 2003-01-10 18:05:10 +0000 | [diff] [blame] | 297 | goto cleanup; |
| 298 | } |
| 299 | for (i = 0; i < nprocs; i++) |
| 300 | if (pid == pidarray[i]) |
| 301 | break; |
| 302 | if (i == nprocs) { |
subrata_modak | 4bb656a | 2009-02-26 12:02:09 +0000 | [diff] [blame] | 303 | (void)fprintf(stderr, |
Wanlong Gao | 354ebb4 | 2012-12-07 10:10:04 +0800 | [diff] [blame] | 304 | "unknown child pid %d, <x%x>\n", |
| 305 | pid, wait_stat); |
robbiew | c44203a | 2003-01-10 18:05:10 +0000 | [diff] [blame] | 306 | goto cleanup; |
| 307 | } |
| 308 | |
| 309 | if ((pid = fork()) == -1) { |
| 310 | perror("fork error"); |
| 311 | pidarray[i] = 0; |
| 312 | goto cleanup; |
Wanlong Gao | 354ebb4 | 2012-12-07 10:10:04 +0800 | [diff] [blame] | 313 | } else if (pid == 0) { /* child */ |
robbiew | c44203a | 2003-01-10 18:05:10 +0000 | [diff] [blame] | 314 | child_mapper(i, nprocs); |
| 315 | exit(0); |
| 316 | } else |
| 317 | pidarray[i] = pid; |
| 318 | } else { |
| 319 | /* |
| 320 | * wait returned an error. If EINTR, then |
| 321 | * normal finish, else it's an unexpected |
| 322 | * error... |
| 323 | */ |
| 324 | if (errno != EINTR || !finished) { |
| 325 | perror("unexpected wait error"); |
| 326 | goto cleanup; |
| 327 | } |
| 328 | } |
| 329 | if (sigrelse(SIGALRM) || sigrelse(SIGINT)) { |
| 330 | perror("sigrelse error"); |
| 331 | goto cleanup; |
| 332 | } |
| 333 | } |
subrata_modak | bdbaec5 | 2009-02-26 12:14:51 +0000 | [diff] [blame] | 334 | |
robbiew | c44203a | 2003-01-10 18:05:10 +0000 | [diff] [blame] | 335 | /* |
| 336 | * Finished! Check the map for sanity, then kill all |
| 337 | * the children and done!. |
| 338 | */ |
| 339 | |
| 340 | if (sighold(SIGALRM)) { |
| 341 | perror("sighold error"); |
| 342 | goto cleanup; |
| 343 | } |
| 344 | (void)alarm(0); |
| 345 | no_prob = 1; |
| 346 | |
| 347 | cleanup: |
| 348 | for (i = 0; i < nprocs; i++) |
| 349 | (void)kill(pidarray[i], SIGKILL); /* failure? oh well. */ |
| 350 | |
| 351 | while (wait(&wait_stat) != -1 || errno != ECHILD) |
| 352 | continue; |
| 353 | |
| 354 | if (no_prob) { /* only check file if no errors */ |
Garrett Cooper | df3eb16 | 2010-11-28 22:44:32 -0800 | [diff] [blame] | 355 | if (!mapokay(buf)) { |
robbiew | c44203a | 2003-01-10 18:05:10 +0000 | [diff] [blame] | 356 | (void)fprintf(stderr, "map data incorrect!\n"); |
Wanlong Gao | 354ebb4 | 2012-12-07 10:10:04 +0800 | [diff] [blame] | 357 | anyfail(); |
| 358 | } else |
robbiew | c44203a | 2003-01-10 18:05:10 +0000 | [diff] [blame] | 359 | (void)printf("map data okay\n"); |
| 360 | } |
subrata_modak | bdbaec5 | 2009-02-26 12:14:51 +0000 | [diff] [blame] | 361 | |
robbiew | c44203a | 2003-01-10 18:05:10 +0000 | [diff] [blame] | 362 | (void)time(&t); |
Wanlong Gao | 354ebb4 | 2012-12-07 10:10:04 +0800 | [diff] [blame] | 363 | // (void)printf("%s: Finished %s", argv[0], ctime(&t)); LTP POrt |
robbiew | c44203a | 2003-01-10 18:05:10 +0000 | [diff] [blame] | 364 | ok_exit(); |
Garrett Cooper | 2c28215 | 2010-12-16 00:55:50 -0800 | [diff] [blame] | 365 | tst_exit(); |
robbiew | c44203a | 2003-01-10 18:05:10 +0000 | [diff] [blame] | 366 | } |
| 367 | |
robbiew | c44203a | 2003-01-10 18:05:10 +0000 | [diff] [blame] | 368 | /* |
| 369 | * Child process that reads/writes map. The child reads/writes |
| 370 | * its own locations on random pages of the map (its locations being |
| 371 | * determined based on nprocs & procno). After a specific number of |
| 372 | * iterations, it exits. |
| 373 | */ |
Wanlong Gao | 354ebb4 | 2012-12-07 10:10:04 +0800 | [diff] [blame] | 374 | void child_mapper(unsigned procno, unsigned nprocs) |
robbiew | c44203a | 2003-01-10 18:05:10 +0000 | [diff] [blame] | 375 | { |
| 376 | uchar_t *paddr; |
| 377 | unsigned randpage; |
| 378 | unsigned int seed; |
| 379 | unsigned loopcnt; |
| 380 | unsigned nloops; |
| 381 | unsigned i; |
| 382 | |
Wanlong Gao | 354ebb4 | 2012-12-07 10:10:04 +0800 | [diff] [blame] | 383 | seed = initrand(); /* initialize random seed */ |
robbiew | c44203a | 2003-01-10 18:05:10 +0000 | [diff] [blame] | 384 | |
| 385 | nloops = (randloops) ? (lrand48() % MAXLOOPS) : MAXLOOPS; |
| 386 | |
| 387 | if (debug) |
| 388 | (void)printf("child %d (pid %d): seed %d, loop %d\n", |
Wanlong Gao | 354ebb4 | 2012-12-07 10:10:04 +0800 | [diff] [blame] | 389 | procno, getpid(), seed, nloops); |
robbiew | c44203a | 2003-01-10 18:05:10 +0000 | [diff] [blame] | 390 | |
| 391 | /* |
| 392 | * Now loop read/writing random pages. |
| 393 | */ |
| 394 | |
Wanlong Gao | 354ebb4 | 2012-12-07 10:10:04 +0800 | [diff] [blame] | 395 | for (loopcnt = 0; loopcnt < nloops; loopcnt++) { |
robbiew | c44203a | 2003-01-10 18:05:10 +0000 | [diff] [blame] | 396 | randpage = lrand48() % mappages; |
| 397 | /* find the page address */ |
Wanlong Gao | 354ebb4 | 2012-12-07 10:10:04 +0800 | [diff] [blame] | 398 | paddr = (uchar_t *) (mapaddr + (randpage * pagesize)); |
robbiew | c44203a | 2003-01-10 18:05:10 +0000 | [diff] [blame] | 399 | |
| 400 | for (i = procno; i < pagesize; i += nprocs) { |
Wanlong Gao | 354ebb4 | 2012-12-07 10:10:04 +0800 | [diff] [blame] | 401 | if (*((unsigned char *)(paddr + i)) |
robbiew | c44203a | 2003-01-10 18:05:10 +0000 | [diff] [blame] | 402 | != ((procno + pattern) & 0xff)) { |
| 403 | (void)fprintf(stderr, |
Wanlong Gao | 354ebb4 | 2012-12-07 10:10:04 +0800 | [diff] [blame] | 404 | "child %d: invalid data <x%x>", |
| 405 | procno, |
| 406 | *((unsigned char *)(paddr + i))); |
robbiew | c44203a | 2003-01-10 18:05:10 +0000 | [diff] [blame] | 407 | (void)fprintf(stderr, |
Wanlong Gao | 354ebb4 | 2012-12-07 10:10:04 +0800 | [diff] [blame] | 408 | " at pg %d off %d, exp <x%x>\n", |
| 409 | randpage, i, |
| 410 | (procno + pattern) & 0xff); |
| 411 | anyfail(); |
robbiew | c44203a | 2003-01-10 18:05:10 +0000 | [diff] [blame] | 412 | } |
| 413 | /* |
| 414 | * Now write it. |
| 415 | */ |
| 416 | |
Wanlong Gao | 354ebb4 | 2012-12-07 10:10:04 +0800 | [diff] [blame] | 417 | *(paddr + i) = (procno + pattern) & 0xff; |
robbiew | c44203a | 2003-01-10 18:05:10 +0000 | [diff] [blame] | 418 | } |
| 419 | } |
| 420 | |
| 421 | if (dosync) { |
| 422 | randpage = (unsigned)lrand48() % mappages; |
Wanlong Gao | 354ebb4 | 2012-12-07 10:10:04 +0800 | [diff] [blame] | 423 | paddr = (uchar_t *) mapaddr + (randpage * pagesize); |
| 424 | if (msync((caddr_t) paddr, (mappages - randpage) * pagesize, |
| 425 | MS_SYNC) == -1) { |
robbiew | c44203a | 2003-01-10 18:05:10 +0000 | [diff] [blame] | 426 | perror("msync error"); |
Wanlong Gao | 354ebb4 | 2012-12-07 10:10:04 +0800 | [diff] [blame] | 427 | anyfail(); |
robbiew | c44203a | 2003-01-10 18:05:10 +0000 | [diff] [blame] | 428 | } |
| 429 | } |
| 430 | |
| 431 | exit(0); |
| 432 | } |
| 433 | |
robbiew | c44203a | 2003-01-10 18:05:10 +0000 | [diff] [blame] | 434 | /* |
| 435 | * Make sure file has all the correct data. |
| 436 | */ |
Wanlong Gao | 354ebb4 | 2012-12-07 10:10:04 +0800 | [diff] [blame] | 437 | int mapokay(uchar_t * expbuf) |
robbiew | c44203a | 2003-01-10 18:05:10 +0000 | [diff] [blame] | 438 | { |
| 439 | uchar_t *ptr; |
| 440 | unsigned i, j; |
| 441 | |
Wanlong Gao | 354ebb4 | 2012-12-07 10:10:04 +0800 | [diff] [blame] | 442 | ptr = (uchar_t *) mapaddr; |
robbiew | c44203a | 2003-01-10 18:05:10 +0000 | [diff] [blame] | 443 | for (i = 0; i < mappages; i++) { |
| 444 | /* |
| 445 | * Compare read bytes of data. |
| 446 | */ |
| 447 | for (j = 0; j < pagesize; j++) { |
| 448 | if (*ptr != expbuf[j]) { |
subrata_modak | 4bb656a | 2009-02-26 12:02:09 +0000 | [diff] [blame] | 449 | (void)fprintf(stderr, |
Wanlong Gao | 354ebb4 | 2012-12-07 10:10:04 +0800 | [diff] [blame] | 450 | "bad map data: exp %c got %c)", |
| 451 | expbuf[j], *ptr); |
robbiew | c44203a | 2003-01-10 18:05:10 +0000 | [diff] [blame] | 452 | (void)fprintf(stderr, ", pg %d off %d\n", i, j); |
Wanlong Gao | 354ebb4 | 2012-12-07 10:10:04 +0800 | [diff] [blame] | 453 | anyfail(); |
robbiew | c44203a | 2003-01-10 18:05:10 +0000 | [diff] [blame] | 454 | } |
| 455 | ptr++; |
| 456 | } |
| 457 | } |
Garrett Cooper | 2c28215 | 2010-12-16 00:55:50 -0800 | [diff] [blame] | 458 | |
subrata_modak | 134e896 | 2009-02-26 11:46:54 +0000 | [diff] [blame] | 459 | return 1; |
robbiew | c44203a | 2003-01-10 18:05:10 +0000 | [diff] [blame] | 460 | } |
| 461 | |
Wanlong Gao | 354ebb4 | 2012-12-07 10:10:04 +0800 | [diff] [blame] | 462 | /*ARGSUSED*/ void finish(int sig) |
robbiew | c44203a | 2003-01-10 18:05:10 +0000 | [diff] [blame] | 463 | { |
| 464 | finished++; |
| 465 | return; |
| 466 | } |
| 467 | |
Wanlong Gao | 354ebb4 | 2012-12-07 10:10:04 +0800 | [diff] [blame] | 468 | unsigned int initrand(void) |
robbiew | c44203a | 2003-01-10 18:05:10 +0000 | [diff] [blame] | 469 | { |
| 470 | unsigned int seed; |
| 471 | |
| 472 | /* |
| 473 | * Initialize random seed... Got this from a test written |
| 474 | * by scooter: |
Wanlong Gao | 354ebb4 | 2012-12-07 10:10:04 +0800 | [diff] [blame] | 475 | * Use srand/rand to diffuse the information from the |
| 476 | * time and pid. If you start several processes, then |
| 477 | * the time and pid information don't provide much |
| 478 | * variation. |
robbiew | c44203a | 2003-01-10 18:05:10 +0000 | [diff] [blame] | 479 | */ |
| 480 | srand((unsigned int)getpid()); |
| 481 | seed = rand(); |
Cyril Hrubis | 4e2bab8 | 2014-09-24 16:34:35 +0200 | [diff] [blame] | 482 | srand((unsigned int)time(NULL)); |
robbiew | c44203a | 2003-01-10 18:05:10 +0000 | [diff] [blame] | 483 | seed = (seed ^ rand()) % 100000; |
| 484 | srand48((long int)seed); |
| 485 | return (seed); |
| 486 | } |
| 487 | |
| 488 | /***** LTP Port *****/ |
| 489 | void ok_exit() |
| 490 | { |
Wanlong Gao | 354ebb4 | 2012-12-07 10:10:04 +0800 | [diff] [blame] | 491 | tst_resm(TPASS, "Test passed\n"); |
robbiew | c44203a | 2003-01-10 18:05:10 +0000 | [diff] [blame] | 492 | tst_exit(); |
| 493 | } |
| 494 | |
robbiew | c44203a | 2003-01-10 18:05:10 +0000 | [diff] [blame] | 495 | int anyfail() |
| 496 | { |
Cyril Hrubis | 526fdf8 | 2014-12-04 14:35:01 +0100 | [diff] [blame] | 497 | tst_brkm(TFAIL, NULL, "Test failed\n"); |
robbiew | c44203a | 2003-01-10 18:05:10 +0000 | [diff] [blame] | 498 | } |
| 499 | |
Chris Dearman | ec6edca | 2012-10-17 19:54:01 -0700 | [diff] [blame] | 500 | /***** ** ** *****/ |