tools/mm/page_owner_sort.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /*
   3  * User-space helper to sort the output of /sys/kernel/debug/page_owner
   4  *
   5  * Example use:
   6  * cat /sys/kernel/debug/page_owner > page_owner_full.txt
   7  * ./page_owner_sort page_owner_full.txt sorted_page_owner.txt
   8  * Or sort by total memory:
   9  * ./page_owner_sort -m page_owner_full.txt sorted_page_owner.txt
  10  *
  11  * See Documentation/mm/page_owner.rst
  12 */
  13
  14 #include <stdio.h>
  15 #include <stdlib.h>
  16 #include <sys/types.h>
  17 #include <sys/stat.h>
  18 #include <fcntl.h>
  19 #include <unistd.h>
  20 #include <string.h>
  21 #include <regex.h>
  22 #include <errno.h>
  23 #include <linux/types.h>
  24 #include <getopt.h>
  25
  26 #define bool int
  27 #define true 1
  28 #define false 0
  29 #define TASK_COMM_LEN 16
  30
  31 struct block_list {
  32         char *txt;
  33         char *comm; // task command name
  34         char *stacktrace;
  35         __u64 ts_nsec;
  36         __u64 free_ts_nsec;
  37         int len;
  38         int num;
  39         int page_num;
  40         pid_t pid;
  41         pid_t tgid;
  42         int allocator;
  43 };
  44 enum FILTER_BIT {
  45         FILTER_UNRELEASE = 1<<1,
  46         FILTER_PID = 1<<2,
  47         FILTER_TGID = 1<<3,
  48         FILTER_COMM = 1<<4
  49 };
  50 enum CULL_BIT {
  51         CULL_UNRELEASE = 1<<1,
  52         CULL_PID = 1<<2,
  53         CULL_TGID = 1<<3,
  54         CULL_COMM = 1<<4,
  55         CULL_STACKTRACE = 1<<5,
  56         CULL_ALLOCATOR = 1<<6
  57 };
  58 enum ALLOCATOR_BIT {
  59         ALLOCATOR_CMA = 1<<1,
  60         ALLOCATOR_SLAB = 1<<2,
  61         ALLOCATOR_VMALLOC = 1<<3,
  62         ALLOCATOR_OTHERS = 1<<4
  63 };
  64 enum ARG_TYPE {
  65         ARG_TXT, ARG_COMM, ARG_STACKTRACE, ARG_ALLOC_TS, ARG_FREE_TS,
  66         ARG_CULL_TIME, ARG_PAGE_NUM, ARG_PID, ARG_TGID, ARG_UNKNOWN, ARG_FREE,
  67         ARG_ALLOCATOR
  68 };
  69 enum SORT_ORDER {
  70         SORT_ASC = 1,
  71         SORT_DESC = -1,
  72 };
  73 struct filter_condition {
  74         pid_t *pids;
  75         pid_t *tgids;
  76         char **comms;
  77         int pids_size;
  78         int tgids_size;
  79         int comms_size;
  80 };
  81 struct sort_condition {
  82         int (**cmps)(const void *, const void *);
  83         int *signs;
  84         int size;
  85 };
  86 static struct filter_condition fc;
  87 static struct sort_condition sc;
  88 static regex_t order_pattern;
  89 static regex_t pid_pattern;
  90 static regex_t tgid_pattern;
  91 static regex_t comm_pattern;
  92 static regex_t ts_nsec_pattern;
  93 static regex_t free_ts_nsec_pattern;
  94 static struct block_list *list;
  95 static int list_size;
  96 static int max_size;
  97 static int cull;
  98 static int filter;
  99 static bool debug_on;
 100
 101 static void set_single_cmp(int (*cmp)(const void *, const void *), int sign);
 102
 103 int read_block(char *buf, char *ext_buf, int buf_size, FILE *fin)
 104 {
 105         char *curr = buf, *const buf_end = buf + buf_size;
 106
 107         while (buf_end - curr > 1 && fgets(curr, buf_end - curr, fin)) {
 108                 if (*curr == '\n') { /* empty line */
 109                         return curr - buf;
 110                 }
 111                 if (!strncmp(curr, "PFN", 3)) {
 112                         strcpy(ext_buf, curr);
 113                         continue;
 114                 }
 115                 curr += strlen(curr);
 116         }
 117
 118         return -1; /* EOF or no space left in buf. */
 119 }
 120
 121 static int compare_txt(const void *p1, const void *p2)
 122 {
 123         const struct block_list *l1 = p1, *l2 = p2;
 124
 125         return strcmp(l1->txt, l2->txt);
 126 }
 127
 128 static int compare_stacktrace(const void *p1, const void *p2)
 129 {
 130         const struct block_list *l1 = p1, *l2 = p2;
 131
 132         return strcmp(l1->stacktrace, l2->stacktrace);
 133 }
 134
 135 static int compare_num(const void *p1, const void *p2)
 136 {
 137         const struct block_list *l1 = p1, *l2 = p2;
 138
 139         return l1->num - l2->num;
 140 }
 141
 142 static int compare_page_num(const void *p1, const void *p2)
 143 {
 144         const struct block_list *l1 = p1, *l2 = p2;
 145
 146         return l1->page_num - l2->page_num;
 147 }
 148
 149 static int compare_pid(const void *p1, const void *p2)
 150 {
 151         const struct block_list *l1 = p1, *l2 = p2;
 152
 153         return l1->pid - l2->pid;
 154 }
 155
 156 static int compare_tgid(const void *p1, const void *p2)
 157 {
 158         const struct block_list *l1 = p1, *l2 = p2;
 159
 160         return l1->tgid - l2->tgid;
 161 }
 162
 163 static int compare_allocator(const void *p1, const void *p2)
 164 {
 165         const struct block_list *l1 = p1, *l2 = p2;
 166
 167         return l1->allocator - l2->allocator;
 168 }
 169
 170 static int compare_comm(const void *p1, const void *p2)
 171 {
 172         const struct block_list *l1 = p1, *l2 = p2;
 173
 174         return strcmp(l1->comm, l2->comm);
 175 }
 176
 177 static int compare_ts(const void *p1, const void *p2)
 178 {
 179         const struct block_list *l1 = p1, *l2 = p2;
 180
 181         return l1->ts_nsec < l2->ts_nsec ? -1 : 1;
 182 }
 183
 184 static int compare_free_ts(const void *p1, const void *p2)
 185 {
 186         const struct block_list *l1 = p1, *l2 = p2;
 187
 188         return l1->free_ts_nsec < l2->free_ts_nsec ? -1 : 1;
 189 }
 190
 191 static int compare_release(const void *p1, const void *p2)
 192 {
 193         const struct block_list *l1 = p1, *l2 = p2;
 194
 195         if (!l1->free_ts_nsec && !l2->free_ts_nsec)
 196                 return 0;
 197         if (l1->free_ts_nsec && l2->free_ts_nsec)
 198                 return 0;
 199         return l1->free_ts_nsec ? 1 : -1;
 200 }
 201
 202 static int compare_cull_condition(const void *p1, const void *p2)
 203 {
 204         if (cull == 0)
 205                 return compare_txt(p1, p2);
 206         if ((cull & CULL_STACKTRACE) && compare_stacktrace(p1, p2))
 207                 return compare_stacktrace(p1, p2);
 208         if ((cull & CULL_PID) && compare_pid(p1, p2))
 209                 return compare_pid(p1, p2);
 210         if ((cull & CULL_TGID) && compare_tgid(p1, p2))
 211                 return compare_tgid(p1, p2);
 212         if ((cull & CULL_COMM) && compare_comm(p1, p2))
 213                 return compare_comm(p1, p2);
 214         if ((cull & CULL_UNRELEASE) && compare_release(p1, p2))
 215                 return compare_release(p1, p2);
 216         if ((cull & CULL_ALLOCATOR) && compare_allocator(p1, p2))
 217                 return compare_allocator(p1, p2);
 218         return 0;
 219 }
 220
 221 static int compare_sort_condition(const void *p1, const void *p2)
 222 {
 223         int cmp = 0;
 224
 225         for (int i = 0; i < sc.size; ++i)
 226                 if (cmp == 0)
 227                         cmp = sc.signs[i] * sc.cmps[i](p1, p2);
 228         return cmp;
 229 }
 230
 231 static int search_pattern(regex_t *pattern, char *pattern_str, char *buf)
 232 {
 233         int err, val_len;
 234         regmatch_t pmatch[2];
 235
 236         err = regexec(pattern, buf, 2, pmatch, REG_NOTBOL);
 237         if (err != 0 || pmatch[1].rm_so == -1) {
 238                 if (debug_on)
 239                         fprintf(stderr, "no matching pattern in %s\n", buf);
 240                 return -1;
 241         }
 242         val_len = pmatch[1].rm_eo - pmatch[1].rm_so;
 243
 244         memcpy(pattern_str, buf + pmatch[1].rm_so, val_len);
 245
 246         return 0;
 247 }
 248
 249 static bool check_regcomp(regex_t *pattern, const char *regex)
 250 {
 251         int err;
 252
 253         err = regcomp(pattern, regex, REG_EXTENDED | REG_NEWLINE);
 254         if (err != 0 || pattern->re_nsub != 1) {
 255                 fprintf(stderr, "Invalid pattern %s code %d\n", regex, err);
 256                 return false;
 257         }
 258         return true;
 259 }
 260
 261 static char **explode(char sep, const char *str, int *size)
 262 {
 263         int count = 0, len = strlen(str);
 264         int lastindex = -1, j = 0;
 265
 266         for (int i = 0; i < len; i++)
 267                 if (str[i] == sep)
 268                         count++;
 269         char **ret = calloc(++count, sizeof(char *));
 270
 271         for (int i = 0; i < len; i++) {
 272                 if (str[i] == sep) {
 273                         ret[j] = calloc(i - lastindex, sizeof(char));
 274                         memcpy(ret[j++], str + lastindex + 1, i - lastindex - 1);
 275                         lastindex = i;
 276                 }
 277         }
 278         if (lastindex <= len - 1) {
 279                 ret[j] = calloc(len - lastindex, sizeof(char));
 280                 memcpy(ret[j++], str + lastindex + 1, strlen(str) - 1 - lastindex);
 281         }
 282         *size = j;
 283         return ret;
 284 }
 285
 286 static void free_explode(char **arr, int size)
 287 {
 288         for (int i = 0; i < size; i++)
 289                 free(arr[i]);
 290         free(arr);
 291 }
 292
 293 # define FIELD_BUFF 25
 294
 295 static int get_page_num(char *buf)
 296 {
 297         int order_val;
 298         char order_str[FIELD_BUFF] = {0};
 299         char *endptr;
 300
 301         search_pattern(&order_pattern, order_str, buf);
 302         errno = 0;
 303         order_val = strtol(order_str, &endptr, 10);
 304         if (order_val > 64 || errno != 0 || endptr == order_str || *endptr != '\0') {
 305                 if (debug_on)
 306                         fprintf(stderr, "wrong order in follow buf:\n%s\n", buf);
 307                 return 0;
 308         }
 309
 310         return 1 << order_val;
 311 }
 312
 313 static pid_t get_pid(char *buf)
 314 {
 315         pid_t pid;
 316         char pid_str[FIELD_BUFF] = {0};
 317         char *endptr;
 318
 319         search_pattern(&pid_pattern, pid_str, buf);
 320         errno = 0;
 321         pid = strtol(pid_str, &endptr, 10);
 322         if (errno != 0 || endptr == pid_str || *endptr != '\0') {
 323                 if (debug_on)
 324                         fprintf(stderr, "wrong/invalid pid in follow buf:\n%s\n", buf);
 325                 return -1;
 326         }
 327
 328         return pid;
 329
 330 }
 331
 332 static pid_t get_tgid(char *buf)
 333 {
 334         pid_t tgid;
 335         char tgid_str[FIELD_BUFF] = {0};
 336         char *endptr;
 337
 338         search_pattern(&tgid_pattern, tgid_str, buf);
 339         errno = 0;
 340         tgid = strtol(tgid_str, &endptr, 10);
 341         if (errno != 0 || endptr == tgid_str || *endptr != '\0') {
 342                 if (debug_on)
 343                         fprintf(stderr, "wrong/invalid tgid in follow buf:\n%s\n", buf);
 344                 return -1;
 345         }
 346
 347         return tgid;
 348
 349 }
 350
 351 static __u64 get_ts_nsec(char *buf)
 352 {
 353         __u64 ts_nsec;
 354         char ts_nsec_str[FIELD_BUFF] = {0};
 355         char *endptr;
 356
 357         search_pattern(&ts_nsec_pattern, ts_nsec_str, buf);
 358         errno = 0;
 359         ts_nsec = strtoull(ts_nsec_str, &endptr, 10);
 360         if (errno != 0 || endptr == ts_nsec_str || *endptr != '\0') {
 361                 if (debug_on)
 362                         fprintf(stderr, "wrong ts_nsec in follow buf:\n%s\n", buf);
 363                 return -1;
 364         }
 365
 366         return ts_nsec;
 367 }
 368
 369 static __u64 get_free_ts_nsec(char *buf)
 370 {
 371         __u64 free_ts_nsec;
 372         char free_ts_nsec_str[FIELD_BUFF] = {0};
 373         char *endptr;
 374
 375         search_pattern(&free_ts_nsec_pattern, free_ts_nsec_str, buf);
 376         errno = 0;
 377         free_ts_nsec = strtoull(free_ts_nsec_str, &endptr, 10);
 378         if (errno != 0 || endptr == free_ts_nsec_str || *endptr != '\0') {
 379                 if (debug_on)
 380                         fprintf(stderr, "wrong free_ts_nsec in follow buf:\n%s\n", buf);
 381                 return -1;
 382         }
 383
 384         return free_ts_nsec;
 385 }
 386
 387 static char *get_comm(char *buf)
 388 {
 389         char *comm_str = malloc(TASK_COMM_LEN);
 390
 391         memset(comm_str, 0, TASK_COMM_LEN);
 392
 393         search_pattern(&comm_pattern, comm_str, buf);
 394         errno = 0;
 395         if (errno != 0) {
 396                 if (debug_on)
 397                         fprintf(stderr, "wrong comm in follow buf:\n%s\n", buf);
 398                 return NULL;
 399         }
 400
 401         return comm_str;
 402 }
 403
 404 static int get_arg_type(const char *arg)
 405 {
 406         if (!strcmp(arg, "pid") || !strcmp(arg, "p"))
 407                 return ARG_PID;
 408         else if (!strcmp(arg, "tgid") || !strcmp(arg, "tg"))
 409                 return ARG_TGID;
 410         else if (!strcmp(arg, "name") || !strcmp(arg, "n"))
 411                 return  ARG_COMM;
 412         else if (!strcmp(arg, "stacktrace") || !strcmp(arg, "st"))
 413                 return ARG_STACKTRACE;
 414         else if (!strcmp(arg, "free") || !strcmp(arg, "f"))
 415                 return ARG_FREE;
 416         else if (!strcmp(arg, "txt") || !strcmp(arg, "T"))
 417                 return ARG_TXT;
 418         else if (!strcmp(arg, "free_ts") || !strcmp(arg, "ft"))
 419                 return ARG_FREE_TS;
 420         else if (!strcmp(arg, "alloc_ts") || !strcmp(arg, "at"))
 421                 return ARG_ALLOC_TS;
 422         else if (!strcmp(arg, "allocator") || !strcmp(arg, "ator"))
 423                 return ARG_ALLOCATOR;
 424         else {
 425                 return ARG_UNKNOWN;
 426         }
 427 }
 428
 429 static int get_allocator(const char *buf, const char *migrate_info)
 430 {
 431         char *tmp, *first_line, *second_line;
 432         int allocator = 0;
 433
 434         if (strstr(migrate_info, "CMA"))
 435                 allocator |= ALLOCATOR_CMA;
 436         if (strstr(migrate_info, "slab"))
 437                 allocator |= ALLOCATOR_SLAB;
 438         tmp = strstr(buf, "__vmalloc_node_range");
 439         if (tmp) {
 440                 second_line = tmp;
 441                 while (*tmp != '\n')
 442                         tmp--;
 443                 tmp--;
 444                 while (*tmp != '\n')
 445                         tmp--;
 446                 first_line = ++tmp;
 447                 tmp = strstr(tmp, "alloc_pages");
 448                 if (tmp && first_line <= tmp && tmp < second_line)
 449                         allocator |= ALLOCATOR_VMALLOC;
 450         }
 451         if (allocator == 0)
 452                 allocator = ALLOCATOR_OTHERS;
 453         return allocator;
 454 }
 455
 456 static bool match_num_list(int num, int *list, int list_size)
 457 {
 458         for (int i = 0; i < list_size; ++i)
 459                 if (list[i] == num)
 460                         return true;
 461         return false;
 462 }
 463
 464 static bool match_str_list(const char *str, char **list, int list_size)
 465 {
 466         for (int i = 0; i < list_size; ++i)
 467                 if (!strcmp(list[i], str))
 468                         return true;
 469         return false;
 470 }
 471
 472 static bool is_need(char *buf)
 473 {
 474         __u64 ts_nsec, free_ts_nsec;
 475
 476         ts_nsec = get_ts_nsec(buf);
 477         free_ts_nsec = get_free_ts_nsec(buf);
 478
 479         if ((filter & FILTER_UNRELEASE) && free_ts_nsec != 0 && ts_nsec < free_ts_nsec)
 480                 return false;
 481         if ((filter & FILTER_PID) && !match_num_list(get_pid(buf), fc.pids, fc.pids_size))
 482                 return false;
 483         if ((filter & FILTER_TGID) &&
 484                 !match_num_list(get_tgid(buf), fc.tgids, fc.tgids_size))
 485                 return false;
 486
 487         char *comm = get_comm(buf);
 488
 489         if ((filter & FILTER_COMM) &&
 490         !match_str_list(comm, fc.comms, fc.comms_size)) {
 491                 free(comm);
 492                 return false;
 493         }
 494         free(comm);
 495         return true;
 496 }
 497
 498 static bool add_list(char *buf, int len, char *ext_buf)
 499 {
 500         if (list_size != 0 &&
 501                 len == list[list_size-1].len &&
 502                 memcmp(buf, list[list_size-1].txt, len) == 0) {
 503                 list[list_size-1].num++;
 504                 list[list_size-1].page_num += get_page_num(buf);
 505                 return true;
 506         }
 507         if (list_size == max_size) {
 508                 fprintf(stderr, "max_size too small??\n");
 509                 return false;
 510         }
 511         if (!is_need(buf))
 512                 return true;
 513         list[list_size].pid = get_pid(buf);
 514         list[list_size].tgid = get_tgid(buf);
 515         list[list_size].comm = get_comm(buf);
 516         list[list_size].txt = malloc(len+1);
 517         if (!list[list_size].txt) {
 518                 fprintf(stderr, "Out of memory\n");
 519                 return false;
 520         }
 521         memcpy(list[list_size].txt, buf, len);
 522         list[list_size].txt[len] = 0;
 523         list[list_size].len = len;
 524         list[list_size].num = 1;
 525         list[list_size].page_num = get_page_num(buf);
 526
 527         list[list_size].stacktrace = strchr(list[list_size].txt, '\n') ?: "";
 528         if (*list[list_size].stacktrace == '\n')
 529                 list[list_size].stacktrace++;
 530         list[list_size].ts_nsec = get_ts_nsec(buf);
 531         list[list_size].free_ts_nsec = get_free_ts_nsec(buf);
 532         list[list_size].allocator = get_allocator(buf, ext_buf);
 533         list_size++;
 534         if (list_size % 1000 == 0) {
 535                 printf("loaded %d\r", list_size);
 536                 fflush(stdout);
 537         }
 538         return true;
 539 }
 540
 541 static bool parse_cull_args(const char *arg_str)
 542 {
 543         int size = 0;
 544         char **args = explode(',', arg_str, &size);
 545
 546         for (int i = 0; i < size; ++i) {
 547                 int arg_type = get_arg_type(args[i]);
 548
 549                 if (arg_type == ARG_PID)
 550                         cull |= CULL_PID;
 551                 else if (arg_type == ARG_TGID)
 552                         cull |= CULL_TGID;
 553                 else if (arg_type == ARG_COMM)
 554                         cull |= CULL_COMM;
 555                 else if (arg_type == ARG_STACKTRACE)
 556                         cull |= CULL_STACKTRACE;
 557                 else if (arg_type == ARG_FREE)
 558                         cull |= CULL_UNRELEASE;
 559                 else if (arg_type == ARG_ALLOCATOR)
 560                         cull |= CULL_ALLOCATOR;
 561                 else {
 562                         free_explode(args, size);
 563                         return false;
 564                 }
 565         }
 566         free_explode(args, size);
 567         if (sc.size == 0)
 568                 set_single_cmp(compare_num, SORT_DESC);
 569         return true;
 570 }
 571
 572 static void set_single_cmp(int (*cmp)(const void *, const void *), int sign)
 573 {
 574         if (sc.signs == NULL || sc.size < 1)
 575                 sc.signs = calloc(1, sizeof(int));
 576         sc.signs[0] = sign;
 577         if (sc.cmps == NULL || sc.size < 1)
 578                 sc.cmps = calloc(1, sizeof(int *));
 579         sc.cmps[0] = cmp;
 580         sc.size = 1;
 581 }
 582
 583 static bool parse_sort_args(const char *arg_str)
 584 {
 585         int size = 0;
 586
 587         if (sc.size != 0) { /* reset sort_condition */
 588                 free(sc.signs);
 589                 free(sc.cmps);
 590                 size = 0;
 591         }
 592
 593         char **args = explode(',', arg_str, &size);
 594
 595         sc.signs = calloc(size, sizeof(int));
 596         sc.cmps = calloc(size, sizeof(int *));
 597         for (int i = 0; i < size; ++i) {
 598                 int offset = 0;
 599
 600                 sc.signs[i] = SORT_ASC;
 601                 if (args[i][0] == '-' || args[i][0] == '+') {
 602                         if (args[i][0] == '-')
 603                                 sc.signs[i] = SORT_DESC;
 604                         offset = 1;
 605                 }
 606
 607                 int arg_type = get_arg_type(args[i]+offset);
 608
 609                 if (arg_type == ARG_PID)
 610                         sc.cmps[i] = compare_pid;
 611                 else if (arg_type == ARG_TGID)
 612                         sc.cmps[i] = compare_tgid;
 613                 else if (arg_type == ARG_COMM)
 614                         sc.cmps[i] = compare_comm;
 615                 else if (arg_type == ARG_STACKTRACE)
 616                         sc.cmps[i] = compare_stacktrace;
 617                 else if (arg_type == ARG_ALLOC_TS)
 618                         sc.cmps[i] = compare_ts;
 619                 else if (arg_type == ARG_FREE_TS)
 620                         sc.cmps[i] = compare_free_ts;
 621                 else if (arg_type == ARG_TXT)
 622                         sc.cmps[i] = compare_txt;
 623                 else if (arg_type == ARG_ALLOCATOR)
 624                         sc.cmps[i] = compare_allocator;
 625                 else {
 626                         free_explode(args, size);
 627                         sc.size = 0;
 628                         return false;
 629                 }
 630         }
 631         sc.size = size;
 632         free_explode(args, size);
 633         return true;
 634 }
 635
 636 static int *parse_nums_list(char *arg_str, int *list_size)
 637 {
 638         int size = 0;
 639         char **args = explode(',', arg_str, &size);
 640         int *list = calloc(size, sizeof(int));
 641
 642         errno = 0;
 643         for (int i = 0; i < size; ++i) {
 644                 char *endptr = NULL;
 645
 646                 list[i] = strtol(args[i], &endptr, 10);
 647                 if (errno != 0 || endptr == args[i] || *endptr != '\0') {
 648                         free(list);
 649                         return NULL;
 650                 }
 651         }
 652         *list_size = size;
 653         free_explode(args, size);
 654         return list;
 655 }
 656
 657 static void print_allocator(FILE *out, int allocator)
 658 {
 659         fprintf(out, "allocated by ");
 660         if (allocator & ALLOCATOR_CMA)
 661                 fprintf(out, "CMA ");
 662         if (allocator & ALLOCATOR_SLAB)
 663                 fprintf(out, "SLAB ");
 664         if (allocator & ALLOCATOR_VMALLOC)
 665                 fprintf(out, "VMALLOC ");
 666         if (allocator & ALLOCATOR_OTHERS)
 667                 fprintf(out, "OTHERS ");
 668 }
 669
 670 #define BUF_SIZE        (128 * 1024)
 671
 672 static void usage(void)
 673 {
 674         printf("Usage: ./page_owner_sort [OPTIONS] <input> <output>\n"
 675                 "-m\t\tSort by total memory.\n"
 676                 "-s\t\tSort by the stack trace.\n"
 677                 "-t\t\tSort by times (default).\n"
 678                 "-p\t\tSort by pid.\n"
 679                 "-P\t\tSort by tgid.\n"
 680                 "-n\t\tSort by task command name.\n"
 681                 "-a\t\tSort by memory allocate time.\n"
 682                 "-r\t\tSort by memory release time.\n"
 683                 "-f\t\tFilter out the information of blocks whose memory has been released.\n"
 684                 "-d\t\tPrint debug information.\n"
 685                 "--pid <pidlist>\tSelect by pid. This selects the information of blocks whose process ID numbers appear in <pidlist>.\n"
 686                 "--tgid <tgidlist>\tSelect by tgid. This selects the information of blocks whose Thread Group ID numbers appear in <tgidlist>.\n"
 687                 "--name <cmdlist>\n\t\tSelect by command name. This selects the information of blocks whose command name appears in <cmdlist>.\n"
 688                 "--cull <rules>\tCull by user-defined rules.<rules> is a single argument in the form of a comma-separated list with some common fields predefined\n"
 689                 "--sort <order>\tSpecify sort order as: [+|-]key[,[+|-]key[,...]]\n"
 690         );
 691 }
 692
 693 int main(int argc, char **argv)
 694 {
 695         FILE *fin, *fout;
 696         char *buf, *ext_buf;
 697         int i, count;
 698         struct stat st;
 699         int opt;
 700         struct option longopts[] = {
 701                 { "pid", required_argument, NULL, 1 },
 702                 { "tgid", required_argument, NULL, 2 },
 703                 { "name", required_argument, NULL, 3 },
 704                 { "cull",  required_argument, NULL, 4 },
 705                 { "sort",  required_argument, NULL, 5 },
 706                 { 0, 0, 0, 0},
 707         };
 708
 709         while ((opt = getopt_long(argc, argv, "adfmnprstP", longopts, NULL)) != -1)
 710                 switch (opt) {
 711                 case 'a':
 712                         set_single_cmp(compare_ts, SORT_ASC);
 713                         break;
 714                 case 'd':
 715                         debug_on = true;
 716                         break;
 717                 case 'f':
 718                         filter = filter | FILTER_UNRELEASE;
 719                         break;
 720                 case 'm':
 721                         set_single_cmp(compare_page_num, SORT_DESC);
 722                         break;
 723                 case 'p':
 724                         set_single_cmp(compare_pid, SORT_ASC);
 725                         break;
 726                 case 'r':
 727                         set_single_cmp(compare_free_ts, SORT_ASC);
 728                         break;
 729                 case 's':
 730                         set_single_cmp(compare_stacktrace, SORT_ASC);
 731                         break;
 732                 case 't':
 733                         set_single_cmp(compare_num, SORT_DESC);
 734                         break;
 735                 case 'P':
 736                         set_single_cmp(compare_tgid, SORT_ASC);
 737                         break;
 738                 case 'n':
 739                         set_single_cmp(compare_comm, SORT_ASC);
 740                         break;
 741                 case 1:
 742                         filter = filter | FILTER_PID;
 743                         fc.pids = parse_nums_list(optarg, &fc.pids_size);
 744                         if (fc.pids == NULL) {
 745                                 fprintf(stderr, "wrong/invalid pid in from the command line:%s\n",
 746                                                 optarg);
 747                                 exit(1);
 748                         }
 749                         break;
 750                 case 2:
 751                         filter = filter | FILTER_TGID;
 752                         fc.tgids = parse_nums_list(optarg, &fc.tgids_size);
 753                         if (fc.tgids == NULL) {
 754                                 fprintf(stderr, "wrong/invalid tgid in from the command line:%s\n",
 755                                                 optarg);
 756                                 exit(1);
 757                         }
 758                         break;
 759                 case 3:
 760                         filter = filter | FILTER_COMM;
 761                         fc.comms = explode(',', optarg, &fc.comms_size);
 762                         break;
 763                 case 4:
 764                         if (!parse_cull_args(optarg)) {
 765                                 fprintf(stderr, "wrong argument after --cull option:%s\n",
 766                                                 optarg);
 767                                 exit(1);
 768                         }
 769                         break;
 770                 case 5:
 771                         if (!parse_sort_args(optarg)) {
 772                                 fprintf(stderr, "wrong argument after --sort option:%s\n",
 773                                                 optarg);
 774                                 exit(1);
 775                         }
 776                         break;
 777                 default:
 778                         usage();
 779                         exit(1);
 780                 }
 781
 782         if (optind >= (argc - 1)) {
 783                 usage();
 784                 exit(1);
 785         }
 786
 787         fin = fopen(argv[optind], "r");
 788         fout = fopen(argv[optind + 1], "w");
 789         if (!fin || !fout) {
 790                 usage();
 791                 perror("open: ");
 792                 exit(1);
 793         }
 794
 795         if (!check_regcomp(&order_pattern, "order\\s*([0-9]*),"))
 796                 goto out_order;
 797         if (!check_regcomp(&pid_pattern, "pid\\s*([0-9]*),"))
 798                 goto out_pid;
 799         if (!check_regcomp(&tgid_pattern, "tgid\\s*([0-9]*) "))
 800                 goto out_tgid;
 801         if (!check_regcomp(&comm_pattern, "tgid\\s*[0-9]*\\s*\\((.*)\\),\\s*ts"))
 802                 goto out_comm;
 803         if (!check_regcomp(&ts_nsec_pattern, "ts\\s*([0-9]*)\\s*ns,"))
 804                 goto out_ts;
 805         if (!check_regcomp(&free_ts_nsec_pattern, "free_ts\\s*([0-9]*)\\s*ns"))
 806                 goto out_free_ts;
 807
 808         fstat(fileno(fin), &st);
 809         max_size = st.st_size / 100; /* hack ... */
 810
 811         list = malloc(max_size * sizeof(*list));
 812         buf = malloc(BUF_SIZE);
 813         ext_buf = malloc(BUF_SIZE);
 814         if (!list || !buf || !ext_buf) {
 815                 fprintf(stderr, "Out of memory\n");
 816                 goto out_free;
 817         }
 818
 819         for ( ; ; ) {
 820                 int buf_len = read_block(buf, ext_buf, BUF_SIZE, fin);
 821
 822                 if (buf_len < 0)
 823                         break;
 824                 if (!add_list(buf, buf_len, ext_buf))
 825                         goto out_free;
 826         }
 827
 828         printf("loaded %d\n", list_size);
 829
 830         printf("sorting ....\n");
 831
 832         qsort(list, list_size, sizeof(list[0]), compare_cull_condition);
 833
 834         printf("culling\n");
 835
 836         for (i = count = 0; i < list_size; i++) {
 837                 if (count == 0 ||
 838                     compare_cull_condition((void *)(&list[count-1]), (void *)(&list[i])) != 0) {
 839                         list[count++] = list[i];
 840                 } else {
 841                         list[count-1].num += list[i].num;
 842                         list[count-1].page_num += list[i].page_num;
 843                 }
 844         }
 845
 846         qsort(list, count, sizeof(list[0]), compare_sort_condition);
 847
 848         for (i = 0; i < count; i++) {
 849                 if (cull == 0) {
 850                         fprintf(fout, "%d times, %d pages, ", list[i].num, list[i].page_num);
 851                         print_allocator(fout, list[i].allocator);
 852                         fprintf(fout, ":\n%s\n", list[i].txt);
 853                 }
 854                 else {
 855                         fprintf(fout, "%d times, %d pages",
 856                                         list[i].num, list[i].page_num);
 857                         if (cull & CULL_PID || filter & FILTER_PID)
 858                                 fprintf(fout, ", PID %d", list[i].pid);
 859                         if (cull & CULL_TGID || filter & FILTER_TGID)
 860                                 fprintf(fout, ", TGID %d", list[i].pid);
 861                         if (cull & CULL_COMM || filter & FILTER_COMM)
 862                                 fprintf(fout, ", task_comm_name: %s", list[i].comm);
 863                         if (cull & CULL_ALLOCATOR) {
 864                                 fprintf(fout, ", ");
 865                                 print_allocator(fout, list[i].allocator);
 866                         }
 867                         if (cull & CULL_UNRELEASE)
 868                                 fprintf(fout, " (%s)",
 869                                                 list[i].free_ts_nsec ? "UNRELEASED" : "RELEASED");
 870                         if (cull & CULL_STACKTRACE)
 871                                 fprintf(fout, ":\n%s", list[i].stacktrace);
 872                         fprintf(fout, "\n");
 873                 }
 874         }
 875
 876 out_free:
 877         if (ext_buf)
 878                 free(ext_buf);
 879         if (buf)
 880                 free(buf);
 881         if (list)
 882                 free(list);
 883 out_free_ts:
 884         regfree(&free_ts_nsec_pattern);
 885 out_ts:
 886         regfree(&ts_nsec_pattern);
 887 out_comm:
 888         regfree(&comm_pattern);
 889 out_tgid:
 890         regfree(&tgid_pattern);
 891 out_pid:
 892         regfree(&pid_pattern);
 893 out_order:
 894         regfree(&order_pattern);
 895
 896         return 0;
 897 }