lnet/libcfs/debug.c

   1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
   2  * vim:expandtab:shiftwidth=8:tabstop=8:
   3  *
   4  * Copyright (C) 2002 Cluster File Systems, Inc.
   5  *   Author: Phil Schwan <phil@clusterfs.com>
   6  *
   7  *   This file is part of Lustre, http://www.lustre.org.
   8  *
   9  *   Lustre is free software; you can redistribute it and/or
  10  *   modify it under the terms of version 2 of the GNU General Public
  11  *   License as published by the Free Software Foundation.
  12  *
  13  *   Lustre is distributed in the hope that it will be useful,
  14  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  *   GNU General Public License for more details.
  17  *
  18  *   You should have received a copy of the GNU General Public License
  19  *   along with Lustre; if not, write to the Free Software
  20  *   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  21  */
  22
  23 #ifndef EXPORT_SYMTAB
  24 # define EXPORT_SYMTAB
  25 #endif
  26
  27 # define DEBUG_SUBSYSTEM S_LNET
  28
  29 #include <libcfs/kp30.h>
  30 #include <libcfs/libcfs.h>
  31 #include "tracefile.h"
  32
  33 static char debug_file_name[1024];
  34
  35 #ifdef __KERNEL__
  36 unsigned int libcfs_subsystem_debug = ~0;
  37 EXPORT_SYMBOL(libcfs_subsystem_debug);
  38
  39 unsigned int libcfs_debug = (D_EMERG | D_ERROR | D_WARNING | D_CONSOLE |
  40                              D_NETERROR | D_HA | D_CONFIG | D_IOCTL |
  41                              D_DLMTRACE | D_RPCTRACE | D_VFSTRACE);
  42 EXPORT_SYMBOL(libcfs_debug);
  43
  44 unsigned int libcfs_printk;
  45 EXPORT_SYMBOL(libcfs_printk);
  46
  47 unsigned int libcfs_console_ratelimit = 1;
  48 EXPORT_SYMBOL(libcfs_console_ratelimit);
  49
  50 unsigned int libcfs_debug_binary = 1;
  51 EXPORT_SYMBOL(libcfs_debug_binary);
  52
  53 unsigned int libcfs_stack;
  54 EXPORT_SYMBOL(libcfs_stack);
  55
  56 unsigned int portal_enter_debugger;
  57 EXPORT_SYMBOL(portal_enter_debugger);
  58
  59 unsigned int libcfs_catastrophe;
  60 EXPORT_SYMBOL(libcfs_catastrophe);
  61
  62 unsigned int libcfs_panic_on_lbug = 0;
  63 EXPORT_SYMBOL(libcfs_panic_on_lbug);
  64
  65 atomic_t libcfs_kmemory = ATOMIC_INIT(0);
  66 EXPORT_SYMBOL(libcfs_kmemory);
  67
  68 static cfs_waitq_t debug_ctlwq;
  69
  70 char debug_file_path[1024] = "/tmp/lustre-log";
  71
  72 int libcfs_panic_in_progress;
  73
  74 /* libcfs_debug_token2mask() expects the returned
  75  * string in lower-case */
  76 const char *
  77 libcfs_debug_subsys2str(int subsys)
  78 {
  79         switch (subsys) {
  80         default:
  81                 return NULL;
  82         case S_UNDEFINED:
  83                 return "undefined";
  84         case S_MDC:
  85                 return "mdc";
  86         case S_MDS:
  87                 return "mds";
  88         case S_OSC:
  89                 return "osc";
  90         case S_OST:
  91                 return "ost";
  92         case S_CLASS:
  93                 return "class";
  94         case S_LOG:
  95                 return "log";
  96         case S_LLITE:
  97                 return "llite";
  98         case S_RPC:
  99                 return "rpc";
 100         case S_LNET:
 101                 return "lnet";
 102         case S_LND:
 103                 return "lnd";
 104         case S_PINGER:
 105                 return "pinger";
 106         case S_FILTER:
 107                 return "filter";
 108         case S_ECHO:
 109                 return "echo";
 110         case S_LDLM:
 111                 return "ldlm";
 112         case S_LOV:
 113                 return "lov";
 114         case S_LMV:
 115                 return "lmv";
 116         case S_SEC:
 117                 return "sec";
 118         case S_GSS:
 119                 return "gss";
 120         case S_MGC:
 121                 return "mgc";
 122         case S_MGS:
 123                 return "mgs";
 124         case S_FID:
 125                 return "fid";
 126         case S_FLD:
 127                 return "fld";
 128         }
 129 }
 130
 131 /* libcfs_debug_token2mask() expects the returned
 132  * string in lower-case */
 133 const char *
 134 libcfs_debug_dbg2str(int debug)
 135 {
 136         switch (debug) {
 137         default:
 138                 return NULL;
 139         case D_TRACE:
 140                 return "trace";
 141         case D_INODE:
 142                 return "inode";
 143         case D_SUPER:
 144                 return "super";
 145         case D_EXT2:
 146                 return "ext2";
 147         case D_MALLOC:
 148                 return "malloc";
 149         case D_CACHE:
 150                 return "cache";
 151         case D_INFO:
 152                 return "info";
 153         case D_IOCTL:
 154                 return "ioctl";
 155         case D_NETERROR:
 156                 return "neterror";
 157         case D_NET:
 158                 return "net";
 159         case D_WARNING:
 160                 return "warning";
 161         case D_BUFFS:
 162                 return "buffs";
 163         case D_OTHER:
 164                 return "other";
 165         case D_DENTRY:
 166                 return "dentry";
 167         case D_NETTRACE:
 168                 return "nettrace";
 169         case D_PAGE:
 170                 return "page";
 171         case D_DLMTRACE:
 172                 return "dlmtrace";
 173         case D_ERROR:
 174                 return "error";
 175         case D_EMERG:
 176                 return "emerg";
 177         case D_HA:
 178                 return "ha";
 179         case D_RPCTRACE:
 180                 return "rpctrace";
 181         case D_VFSTRACE:
 182                 return "vfstrace";
 183         case D_READA:
 184                 return "reada";
 185         case D_MMAP:
 186                 return "mmap";
 187         case D_CONFIG:
 188                 return "config";
 189         case D_CONSOLE:
 190                 return "console";
 191         case D_QUOTA:
 192                 return "quota";
 193         case D_SEC:
 194                 return "sec";
 195         }
 196 }
 197
 198 int
 199 libcfs_debug_mask2str(char *str, int size, int mask, int is_subsys)
 200 {
 201         const char *(*fn)(int bit) = is_subsys ? libcfs_debug_subsys2str :
 202                                                  libcfs_debug_dbg2str;
 203         int           len = 0;
 204         const char   *token;
 205         int           bit;
 206         int           i;
 207
 208         if (mask == 0) {                        /* "0" */
 209                 if (size > 0)
 210                         str[0] = '0';
 211                 len = 1;
 212         } else {                                /* space-separated tokens */
 213                 for (i = 0; i < 32; i++) {
 214                         bit = 1 << i;
 215
 216                         if ((mask & bit) == 0)
 217                                 continue;
 218
 219                         token = fn(bit);
 220                         if (token == NULL)              /* unused bit */
 221                                 continue;
 222
 223                         if (len > 0) {                  /* separator? */
 224                                 if (len < size)
 225                                         str[len] = ' ';
 226                                 len++;
 227                         }
 228
 229                         while (*token != 0) {
 230                                 if (len < size)
 231                                         str[len] = *token;
 232                                 token++;
 233                                 len++;
 234                         }
 235                 }
 236         }
 237
 238         /* terminate 'str' */
 239         if (len < size)
 240                 str[len] = 0;
 241         else
 242                 str[size - 1] = 0;
 243
 244         return len;
 245 }
 246
 247 int
 248 libcfs_debug_token2mask(int *mask, const char *str, int len, int is_subsys)
 249 {
 250         const char *(*fn)(int bit) = is_subsys ? libcfs_debug_subsys2str :
 251                                                  libcfs_debug_dbg2str;
 252         int           i;
 253         int           j;
 254         int           bit;
 255         const char   *token;
 256
 257         /* match against known tokens */
 258         for (i = 0; i < 32; i++) {
 259                 bit = 1 << i;
 260
 261                 token = fn(bit);
 262                 if (token == NULL)              /* unused? */
 263                         continue;
 264
 265                 /* strcasecmp */
 266                 for (j = 0; ; j++) {
 267                         if (j == len) {         /* end of token */
 268                                 if (token[j] == 0) {
 269                                         *mask = bit;
 270                                         return 0;
 271                                 }
 272                                 break;
 273                         }
 274
 275                         if (token[j] == 0)
 276                                 break;
 277
 278                         if (str[j] == token[j])
 279                                 continue;
 280
 281                         if (str[j] < 'A' || 'Z' < str[j])
 282                                 break;
 283
 284                         if (str[j] - 'A' + 'a' != token[j])
 285                                 break;
 286                 }
 287         }
 288
 289         return -EINVAL;                         /* no match */
 290 }
 291
 292 int
 293 libcfs_debug_str2mask(int *mask, const char *str, int is_subsys)
 294 {
 295         int         m = 0;
 296         int         matched = 0;
 297         char        op = 0;
 298         int         n;
 299         int         t;
 300
 301         /* <str> must be a list of debug tokens or numbers separated by
 302          * whitespace and optionally an operator ('+' or '-').  If an operator
 303          * appears first in <str>, '*mask' is used as the starting point
 304          * (relative), otherwise 0 is used (absolute).  An operator applies to
 305          * all following tokens up to the next operator. */
 306
 307         while (*str != 0) {
 308                 while (isspace(*str)) /* skip whitespace */
 309                         str++;
 310
 311                 if (*str == 0)
 312                         break;
 313
 314                 if (*str == '+' || *str == '-') {
 315                         op = *str++;
 316
 317                         /* op on first token == relative */
 318                         if (!matched)
 319                                 m = *mask;
 320
 321                         while (isspace(*str)) /* skip whitespace */
 322                                 str++;
 323
 324                         if (*str == 0)          /* trailing op */
 325                                 return -EINVAL;
 326                 }
 327
 328                 /* find token length */
 329                 for (n = 0; str[n] != 0 && !isspace(str[n]); n++);
 330
 331                 /* match token */
 332                 if (libcfs_debug_token2mask(&t, str, n, is_subsys) != 0)
 333                         return -EINVAL;
 334
 335                 matched = 1;
 336                 if (op == '-')
 337                         m &= ~t;
 338                 else
 339                         m |= t;
 340
 341                 str += n;
 342         }
 343
 344         if (!matched)
 345                 return -EINVAL;
 346
 347         *mask = m;
 348         return 0;
 349 }
 350
 351 void libcfs_debug_dumplog_internal(void *arg)
 352 {
 353         CFS_DECL_JOURNAL_DATA;
 354
 355         CFS_PUSH_JOURNAL;
 356
 357         snprintf(debug_file_name, sizeof(debug_file_path) - 1, "%s.%ld.%ld",
 358                  debug_file_path, cfs_time_current_sec(), (long)arg);
 359         printk(KERN_ALERT "LustreError: dumping log to %s\n", debug_file_name);
 360         tracefile_dump_all_pages(debug_file_name);
 361
 362         CFS_POP_JOURNAL;
 363 }
 364
 365 int libcfs_debug_dumplog_thread(void *arg)
 366 {
 367         cfs_daemonize("");
 368         libcfs_debug_dumplog_internal(arg);
 369         cfs_waitq_signal(&debug_ctlwq);
 370         return 0;
 371 }
 372
 373 void libcfs_debug_dumplog(void)
 374 {
 375         int            rc;
 376         cfs_waitlink_t wait;
 377         ENTRY;
 378
 379         /* we're being careful to ensure that the kernel thread is
 380          * able to set our state to running as it exits before we
 381          * get to schedule() */
 382         cfs_waitlink_init(&wait);
 383         set_current_state(TASK_INTERRUPTIBLE);
 384         cfs_waitq_add(&debug_ctlwq, &wait);
 385
 386         rc = cfs_kernel_thread(libcfs_debug_dumplog_thread,
 387                                (void *)(long)cfs_curproc_pid(),
 388                                CLONE_VM | CLONE_FS | CLONE_FILES);
 389         if (rc < 0)
 390                 printk(KERN_ERR "LustreError: cannot start log dump thread: "
 391                        "%d\n", rc);
 392         else
 393                 cfs_waitq_wait(&wait, CFS_TASK_INTERRUPTIBLE);
 394
 395         /* be sure to teardown if kernel_thread() failed */
 396         cfs_waitq_del(&debug_ctlwq, &wait);
 397         set_current_state(TASK_RUNNING);
 398 }
 399
 400 int libcfs_debug_init(unsigned long bufsize)
 401 {
 402         int    rc;
 403
 404         cfs_waitq_init(&debug_ctlwq);
 405         rc = tracefile_init();
 406
 407         if (rc == 0)
 408                 libcfs_register_panic_notifier();
 409
 410         return rc;
 411 }
 412
 413 int libcfs_debug_cleanup(void)
 414 {
 415         libcfs_unregister_panic_notifier();
 416         tracefile_exit();
 417         return 0;
 418 }
 419
 420 int libcfs_debug_clear_buffer(void)
 421 {
 422         trace_flush_pages();
 423         return 0;
 424 }
 425
 426 /* Debug markers, although printed by S_LNET
 427  * should not be be marked as such. */
 428 #undef DEBUG_SUBSYSTEM
 429 #define DEBUG_SUBSYSTEM S_UNDEFINED
 430 int libcfs_debug_mark_buffer(char *text)
 431 {
 432         CDEBUG(D_TRACE,"***************************************************\n");
 433         CDEBUG(D_WARNING, "DEBUG MARKER: %s\n", text);
 434         CDEBUG(D_TRACE,"***************************************************\n");
 435
 436         return 0;
 437 }
 438 #undef DEBUG_SUBSYSTEM
 439 #define DEBUG_SUBSYSTEM S_LNET
 440
 441 void libcfs_debug_set_level(unsigned int debug_level)
 442 {
 443         printk(KERN_WARNING "Lustre: Setting portals debug level to %08x\n",
 444                debug_level);
 445         libcfs_debug = debug_level;
 446 }
 447
 448 EXPORT_SYMBOL(libcfs_debug_dumplog);
 449 EXPORT_SYMBOL(libcfs_debug_set_level);
 450
 451
 452 #else /* !__KERNEL__ */
 453
 454 #include <libcfs/libcfs.h>
 455
 456 #ifdef HAVE_SYS_USER_H
 457 # include <sys/user.h>
 458 #endif
 459
 460 #ifdef HAVE_CATAMOUNT_DATA_H
 461 #include <catamount/data.h>
 462 #include <catamount/lputs.h>
 463
 464 static char source_nid[16];
 465 /* 0 indicates no messages to console, 1 is errors, > 1 is all debug messages */
 466 static int toconsole = 1;
 467 unsigned int libcfs_console_ratelimit = 1;
 468 #else /* !HAVE_CATAMOUNT_DATA_H */
 469 #ifdef HAVE_NETDB_H
 470 #include <sys/utsname.h>
 471 #endif /* HAVE_CATAMOUNT_DATA_H */
 472 struct utsname *tmp_utsname;
 473 static char source_nid[sizeof(tmp_utsname->nodename)];
 474 #endif /* __KERNEL__ */
 475
 476 static int source_pid;
 477 int smp_processor_id = 1;
 478 char debug_file_path[1024];
 479 FILE *debug_file_fd;
 480
 481 int portals_do_debug_dumplog(void *arg)
 482 {
 483         printf("Look in %s\n", debug_file_name);
 484         return 0;
 485 }
 486
 487
 488 void portals_debug_print(void)
 489 {
 490         return;
 491 }
 492
 493
 494 void libcfs_debug_dumplog(void)
 495 {
 496         printf("Look in %s\n", debug_file_name);
 497         return;
 498 }
 499
 500 int libcfs_debug_init(unsigned long bufsize)
 501 {
 502         char *debug_mask = NULL;
 503         char *debug_subsys = NULL;
 504         char *debug_filename;
 505
 506 #ifdef HAVE_CATAMOUNT_DATA_H
 507         char *debug_console = NULL;
 508         char *debug_ratelimit = NULL;
 509
 510         snprintf(source_nid, sizeof(source_nid) - 1, "%u", _my_pnid);
 511         source_pid = _my_pid;
 512
 513         debug_console = getenv("LIBLUSTRE_DEBUG_CONSOLE");
 514         if (debug_console != NULL) {
 515                 toconsole = strtoul(debug_console, NULL, 0);
 516                 CDEBUG(D_INFO, "set liblustre toconsole to %u\n", toconsole);
 517         }
 518         debug_ratelimit = getenv("LIBLUSTRE_DEBUG_CONSOLE_RATELIMIT");
 519         if (debug_ratelimit != NULL) {
 520                 libcfs_console_ratelimit = strtoul(debug_ratelimit, NULL, 0);
 521                 CDEBUG(D_INFO, "set liblustre console ratelimit to %u\n", libcfs_console_ratelimit);
 522         }
 523 #else
 524         struct utsname myname;
 525
 526         if (uname(&myname) == 0)
 527                 strcpy(source_nid, myname.nodename);
 528         source_pid = getpid();
 529 #endif
 530         /* debug masks */
 531         debug_mask = getenv("LIBLUSTRE_DEBUG_MASK");
 532         if (debug_mask)
 533                 libcfs_debug = (unsigned int) strtol(debug_mask, NULL, 0);
 534
 535         debug_subsys = getenv("LIBLUSTRE_DEBUG_SUBSYS");
 536         if (debug_subsys)
 537                 libcfs_subsystem_debug =
 538                                 (unsigned int) strtol(debug_subsys, NULL, 0);
 539
 540         debug_filename = getenv("LIBLUSTRE_DEBUG_BASE");
 541         if (debug_filename)
 542                 strncpy(debug_file_path,debug_filename,sizeof(debug_file_path));
 543
 544         debug_filename = getenv("LIBLUSTRE_DEBUG_FILE");
 545         if (debug_filename)
 546                 strncpy(debug_file_name,debug_filename,sizeof(debug_file_path));
 547
 548         if (debug_file_name[0] == '\0' && debug_file_path[0] != '\0')
 549                 snprintf(debug_file_name, sizeof(debug_file_name) - 1,
 550                          "%s-%s-%lu.log", debug_file_path, source_nid, time(0));
 551
 552         if (strcmp(debug_file_name, "stdout") == 0 ||
 553             strcmp(debug_file_name, "-") == 0) {
 554                 debug_file_fd = stdout;
 555         } else if (strcmp(debug_file_name, "stderr") == 0) {
 556                 debug_file_fd = stderr;
 557         } else if (debug_file_name[0] != '\0') {
 558                 debug_file_fd = fopen(debug_file_name, "w");
 559                 if (debug_file_fd == NULL)
 560                         fprintf(stderr, "%s: unable to open '%s': %s\n",
 561                                 source_nid, debug_file_name, strerror(errno));
 562         }
 563
 564         if (debug_file_fd == NULL)
 565                 debug_file_fd = stdout;
 566
 567         return 0;
 568 }
 569
 570 int libcfs_debug_cleanup(void)
 571 {
 572         if (debug_file_fd != stdout && debug_file_fd != stderr)
 573                 fclose(debug_file_fd);
 574         return 0;
 575 }
 576
 577 int libcfs_debug_clear_buffer(void)
 578 {
 579         return 0;
 580 }
 581
 582 int libcfs_debug_mark_buffer(char *text)
 583 {
 584
 585         fprintf(debug_file_fd, "*******************************************************************************\n");
 586         fprintf(debug_file_fd, "DEBUG MARKER: %s\n", text);
 587         fprintf(debug_file_fd, "*******************************************************************************\n");
 588
 589         return 0;
 590 }
 591
 592 #ifdef HAVE_CATAMOUNT_DATA_H
 593 #define CATAMOUNT_MAXLINE (256-4)
 594 void catamount_printline(char *buf, size_t size)
 595 {
 596     char *pos = buf;
 597     int prsize = size;
 598
 599     while (prsize > 0){
 600         lputs(pos);
 601         pos += CATAMOUNT_MAXLINE;
 602         prsize -= CATAMOUNT_MAXLINE;
 603     }
 604 }
 605 #endif
 606
 607 int
 608 libcfs_debug_vmsg2(cfs_debug_limit_state_t *cdls,
 609                    int subsys, int mask,
 610                    const char *file, const char *fn, const int line,
 611                    const char *format1, va_list args,
 612                    const char *format2, ...)
 613 {
 614         struct timeval tv;
 615         int            nob;
 616         int            remain;
 617         va_list        ap;
 618         char           buf[PAGE_SIZE]; /* size 4096 used for compatimble with linux,
 619                                         * where message can`t be exceed PAGE_SIZE */
 620         int            console = 0;
 621         char *prefix = "Lustre";
 622
 623 #ifdef HAVE_CATAMOUNT_DATA_H
 624         /* toconsole == 0 - all messages to debug_file_fd
 625          * toconsole == 1 - warnings to console, all to debug_file_fd
 626          * toconsole >  1 - all debug to console */
 627         if ( ((mask & D_CANTMASK) &&
 628              (toconsole == 1)) || (toconsole > 1)) {
 629                 console = 1;
 630         }
 631 #endif
 632
 633         if ((!console) && (!debug_file_fd)) {
 634                 return 0;
 635         }
 636
 637         if (mask & (D_EMERG | D_ERROR))
 638                prefix = "LustreError";
 639
 640         nob = snprintf(buf, sizeof(buf), "%s: %u-%s:(%s:%d:%s()): ", prefix,
 641                        source_pid, source_nid, file, line, fn);
 642
 643         remain = sizeof(buf) - nob;
 644         if (format1) {
 645                 nob += vsnprintf(&buf[nob], remain, format1, args);
 646         }
 647
 648         remain = sizeof(buf) - nob;
 649         if ((format2) && (remain > 0)) {
 650                 va_start(ap, format2);
 651                 nob += vsnprintf(&buf[nob], remain, format2, ap);
 652                 va_end(ap);
 653         }
 654
 655 #ifdef HAVE_CATAMOUNT_DATA_H
 656         if (console) {
 657                 /* check rate limit for console */
 658                 if (cdls != NULL) {
 659                         cfs_time_t t = cdls->cdls_next +
 660                                        cfs_time_seconds(CDEBUG_MAX_LIMIT + 10);
 661                         cfs_duration_t  dmax = cfs_time_seconds(CDEBUG_MAX_LIMIT);
 662
 663                         if (libcfs_console_ratelimit &&
 664                                 cdls->cdls_next != 0 &&     /* not first time ever */
 665                                 !cfs_time_after(cfs_time_current(), cdls->cdls_next)) {
 666
 667                                 /* skipping a console message */
 668                                 cdls->cdls_count++;
 669                                 goto out_file;
 670                         }
 671
 672                         if (cfs_time_after(cfs_time_current(), t)) {
 673                                 /* last timeout was a long time ago */
 674                                 cdls->cdls_delay /= 8;
 675                         } else {
 676                                 cdls->cdls_delay *= 2;
 677
 678                                 if (cdls->cdls_delay < CFS_TICK)
 679                                         cdls->cdls_delay = CFS_TICK;
 680                                 else if (cdls->cdls_delay > dmax)
 681                                         cdls->cdls_delay = dmax;
 682                         }
 683
 684                         /* ensure cdls_next is never zero after it's been seen */
 685                         cdls->cdls_next = (cfs_time_current() + cdls->cdls_delay) | 1;
 686                 }
 687
 688                 if (cdls != NULL && cdls->cdls_count != 0) {
 689                         char buf2[100];
 690
 691                         nob = snprintf(buf2, sizeof(buf2),
 692                                        "Skipped %d previous similar message%s\n",
 693                                        cdls->cdls_count, (cdls->cdls_count > 1) ? "s" : "");
 694
 695                         catamount_printline(buf2, nob);
 696                         cdls->cdls_count = 0;
 697                         goto out_file;
 698                 }
 699                 catamount_printline(buf, nob);
 700        }
 701 out_file:
 702         /* return on toconsole > 1, as we don't want the user getting
 703         * spammed by the debug data */
 704         if (toconsole > 1)
 705                 return 0;
 706 #endif
 707         if (debug_file_fd == NULL)
 708                 return 0;
 709
 710         gettimeofday(&tv, NULL);
 711
 712         fprintf(debug_file_fd, "%lu.%06lu:%u:%s:(%s:%d:%s()): %s",
 713                 tv.tv_sec, tv.tv_usec, source_pid, source_nid,
 714                 file, line, fn, buf);
 715
 716         return 0;
 717 }
 718
 719 void
 720 libcfs_assertion_failed(const char *expr, const char *file, const char *func,
 721                         const int line)
 722 {
 723         libcfs_debug_msg(NULL, 0, D_EMERG, file, func, line,
 724                          "ASSERTION(%s) failed\n", expr);
 725         abort();
 726 }
 727
 728 #endif /* __KERNEL__ */