lustre/include/linux/obd_support.h

   1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
   2  * vim:expandtab:shiftwidth=8:tabstop=8:
   3  *
   4  *  Copyright (C) 2001, 2002 Cluster File Systems, Inc.
   5  *
   6  *   This file is part of Lustre, http://www.lustre.org.
   7  *
   8  *   Lustre is free software; you can redistribute it and/or
   9  *   modify it under the terms of version 2 of the GNU General Public
  10  *   License as published by the Free Software Foundation.
  11  *
  12  *   Lustre is distributed in the hope that it will be useful,
  13  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  *   GNU General Public License for more details.
  16  *
  17  *   You should have received a copy of the GNU General Public License
  18  *   along with Lustre; if not, write to the Free Software
  19  *   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  20  *
  21  */
  22
  23 #ifndef _OBD_SUPPORT
  24 #define _OBD_SUPPORT
  25
  26 #ifdef __KERNEL__
  27 #include <linux/config.h>
  28 #include <linux/autoconf.h>
  29 #include <linux/slab.h>
  30 #include <linux/highmem.h>
  31 #include <linux/buffer_head.h>
  32 #endif
  33 #include <libcfs/kp30.h>
  34 #include <linux/lustre_compat25.h>
  35
  36 /* global variables */
  37 extern int obd_memmax;
  38 extern atomic_t obd_memory;
  39
  40 extern unsigned int obd_fail_loc;
  41 extern unsigned int obd_timeout;
  42 extern unsigned int ldlm_timeout;
  43 extern char obd_lustre_upcall[128];
  44 extern unsigned int obd_sync_filter;
  45 extern unsigned int obd_dump_on_timeout;
  46 extern wait_queue_head_t obd_race_waitq;
  47
  48 #define OBD_FAIL_MDS                     0x100
  49 #define OBD_FAIL_MDS_HANDLE_UNPACK       0x101
  50 #define OBD_FAIL_MDS_GETATTR_NET         0x102
  51 #define OBD_FAIL_MDS_GETATTR_PACK        0x103
  52 #define OBD_FAIL_MDS_READPAGE_NET        0x104
  53 #define OBD_FAIL_MDS_READPAGE_PACK       0x105
  54 #define OBD_FAIL_MDS_SENDPAGE            0x106
  55 #define OBD_FAIL_MDS_REINT_NET           0x107
  56 #define OBD_FAIL_MDS_REINT_UNPACK        0x108
  57 #define OBD_FAIL_MDS_REINT_SETATTR       0x109
  58 #define OBD_FAIL_MDS_REINT_SETATTR_WRITE 0x10a
  59 #define OBD_FAIL_MDS_REINT_CREATE        0x10b
  60 #define OBD_FAIL_MDS_REINT_CREATE_WRITE  0x10c
  61 #define OBD_FAIL_MDS_REINT_UNLINK        0x10d
  62 #define OBD_FAIL_MDS_REINT_UNLINK_WRITE  0x10e
  63 #define OBD_FAIL_MDS_REINT_LINK          0x10f
  64 #define OBD_FAIL_MDS_REINT_LINK_WRITE    0x110
  65 #define OBD_FAIL_MDS_REINT_RENAME        0x111
  66 #define OBD_FAIL_MDS_REINT_RENAME_WRITE  0x112
  67 #define OBD_FAIL_MDS_OPEN_NET            0x113
  68 #define OBD_FAIL_MDS_OPEN_PACK           0x114
  69 #define OBD_FAIL_MDS_CLOSE_NET           0x115
  70 #define OBD_FAIL_MDS_CLOSE_PACK          0x116
  71 #define OBD_FAIL_MDS_CONNECT_NET         0x117
  72 #define OBD_FAIL_MDS_CONNECT_PACK        0x118
  73 #define OBD_FAIL_MDS_REINT_NET_REP       0x119
  74 #define OBD_FAIL_MDS_DISCONNECT_NET      0x11a
  75 #define OBD_FAIL_MDS_GETSTATUS_NET       0x11b
  76 #define OBD_FAIL_MDS_GETSTATUS_PACK      0x11c
  77 #define OBD_FAIL_MDS_STATFS_PACK         0x11d
  78 #define OBD_FAIL_MDS_STATFS_NET          0x11e
  79 #define OBD_FAIL_MDS_GETATTR_LOCK_NET    0x11f
  80 #define OBD_FAIL_MDS_PIN_NET             0x120
  81 #define OBD_FAIL_MDS_UNPIN_NET           0x121
  82 #define OBD_FAIL_MDS_ALL_REPLY_NET       0x122
  83 #define OBD_FAIL_MDS_ALL_REQUEST_NET     0x123
  84 #define OBD_FAIL_MDS_SYNC_NET            0x124
  85 #define OBD_FAIL_MDS_SYNC_PACK           0x125
  86 #define OBD_FAIL_MDS_DONE_WRITING_NET    0x126
  87 #define OBD_FAIL_MDS_DONE_WRITING_PACK   0x127
  88 #define OBD_FAIL_MDS_ALLOC_OBDO          0x128
  89 #define OBD_FAIL_MDS_PAUSE_OPEN          0x129
  90 #define OBD_FAIL_MDS_STATFS_LCW_SLEEP    0x12a
  91 #define OBD_FAIL_MDS_OPEN_CREATE         0x12b
  92 #define OBD_FAIL_MDS_ACCESS_CHECK_NET    0x12c
  93 #define OBD_FAIL_MDS_ACCESS_CHECK_PACK   0x12d
  94 #define OBD_FAIL_MDS_PACK_CAPA           0x12e
  95
  96 #define OBD_FAIL_OST                     0x200
  97 #define OBD_FAIL_OST_CONNECT_NET         0x201
  98 #define OBD_FAIL_OST_DISCONNECT_NET      0x202
  99 #define OBD_FAIL_OST_GET_INFO_NET        0x203
 100 #define OBD_FAIL_OST_CREATE_NET          0x204
 101 #define OBD_FAIL_OST_DESTROY_NET         0x205
 102 #define OBD_FAIL_OST_GETATTR_NET         0x206
 103 #define OBD_FAIL_OST_SETATTR_NET         0x207
 104 #define OBD_FAIL_OST_OPEN_NET            0x208
 105 #define OBD_FAIL_OST_CLOSE_NET           0x209
 106 #define OBD_FAIL_OST_BRW_NET             0x20a
 107 #define OBD_FAIL_OST_PUNCH_NET           0x20b
 108 #define OBD_FAIL_OST_STATFS_NET          0x20c
 109 #define OBD_FAIL_OST_HANDLE_UNPACK       0x20d
 110 #define OBD_FAIL_OST_BRW_WRITE_BULK      0x20e
 111 #define OBD_FAIL_OST_BRW_READ_BULK       0x20f
 112 #define OBD_FAIL_OST_SYNC_NET            0x210
 113 #define OBD_FAIL_OST_ALL_REPLY_NET       0x211
 114 #define OBD_FAIL_OST_ALL_REQUESTS_NET    0x212
 115 #define OBD_FAIL_OST_LDLM_REPLY_NET      0x213
 116 #define OBD_FAIL_OST_BRW_PAUSE_BULK      0x214
 117 #define OBD_FAIL_OST_ENOSPC              0x215
 118 #define OBD_FAIL_OST_EROFS               0x216
 119
 120
 121 #define OBD_FAIL_LDLM                    0x300
 122 #define OBD_FAIL_LDLM_NAMESPACE_NEW      0x301
 123 #define OBD_FAIL_LDLM_ENQUEUE            0x302
 124 #define OBD_FAIL_LDLM_CONVERT            0x303
 125 #define OBD_FAIL_LDLM_CANCEL             0x304
 126 #define OBD_FAIL_LDLM_BL_CALLBACK        0x305
 127 #define OBD_FAIL_LDLM_CP_CALLBACK        0x306
 128 #define OBD_FAIL_LDLM_GL_CALLBACK        0x307
 129 #define OBD_FAIL_LDLM_ENQUEUE_EXTENT_ERR 0x308
 130 #define OBD_FAIL_LDLM_ENQUEUE_INTENT_ERR 0x309
 131 #define OBD_FAIL_LDLM_CREATE_RESOURCE    0x30a
 132 #define OBD_FAIL_LDLM_ENQUEUE_BLOCKED    0x30b
 133 #define OBD_FAIL_LDLM_REPLY              0x30c
 134
 135
 136 #define OBD_FAIL_OSC                     0x400
 137 #define OBD_FAIL_OSC_BRW_READ_BULK       0x401
 138 #define OBD_FAIL_OSC_BRW_WRITE_BULK      0x402
 139 #define OBD_FAIL_OSC_LOCK_BL_AST         0x403
 140 #define OBD_FAIL_OSC_LOCK_CP_AST         0x404
 141 #define OBD_FAIL_OSC_MATCH               0x405
 142
 143 #define OBD_FAIL_PTLRPC                  0x500
 144 #define OBD_FAIL_PTLRPC_ACK              0x501
 145 #define OBD_FAIL_PTLRPC_RQBD             0x502
 146 #define OBD_FAIL_PTLRPC_BULK_GET_NET     0x503
 147 #define OBD_FAIL_PTLRPC_BULK_PUT_NET     0x504
 148
 149 #define OBD_FAIL_OBD_PING_NET            0x600
 150 #define OBD_FAIL_OBD_LOG_CANCEL_NET      0x601
 151 #define OBD_FAIL_OBD_LOGD_NET            0x602
 152
 153 #define OBD_FAIL_TGT_REPLY_NET           0x700
 154 #define OBD_FAIL_TGT_CONN_RACE           0x701
 155
 156 #define OBD_FAIL_SVCSEC_ACCEPT_BEG       0x750
 157 #define OBD_FAIL_SVCSEC_ACCEPT_END       0x751
 158 #define OBD_FAIL_SVCSEC_WRAP_BEG         0x752
 159 #define OBD_FAIL_SVCSEC_WRAP_END         0x753
 160 #define OBD_FAIL_SVCGSS_ERR_NOTIFY       0x760
 161 #define OBD_FAIL_SVCGSS_INIT_REQ         0x780
 162 #define OBD_FAIL_SVCGSS_INIT_REP         0x781
 163
 164 #define OBD_FAIL_MDC_REVALIDATE_PAUSE    0x800
 165
 166 #define OBD_FAIL_FILTER_VERIFY_CAPA      0x900
 167
 168 /* preparation for a more advanced failure testbed (not functional yet) */
 169 #define OBD_FAIL_MASK_SYS    0x0000FF00
 170 #define OBD_FAIL_MASK_LOC    (0x000000FF | OBD_FAIL_MASK_SYS)
 171 #define OBD_FAIL_ONCE        0x80000000
 172 #define OBD_FAILED           0x40000000
 173 #define OBD_FAIL_MDS_ALL_NET 0x01000000
 174 #define OBD_FAIL_OST_ALL_NET 0x02000000
 175
 176 #define OBD_FAIL_CHECK(id)   (((obd_fail_loc & OBD_FAIL_MASK_LOC) ==           \
 177                               ((id) & OBD_FAIL_MASK_LOC)) &&                   \
 178                               ((obd_fail_loc & (OBD_FAILED | OBD_FAIL_ONCE))!= \
 179                                 (OBD_FAILED | OBD_FAIL_ONCE)))
 180
 181 #define OBD_FAIL_CHECK_ONCE(id)                                              \
 182 ({      int _ret_ = 0;                                                       \
 183         if (OBD_FAIL_CHECK(id)) {                                            \
 184                 CERROR("obd_fail_loc=%x\n", id);                             \
 185                 obd_fail_loc |= OBD_FAILED;                                  \
 186                 if ((id) & OBD_FAIL_ONCE)                                    \
 187                         obd_fail_loc |= OBD_FAIL_ONCE;                       \
 188                 _ret_ = 1;                                                   \
 189         }                                                                    \
 190         _ret_;                                                               \
 191 })
 192
 193 #define OBD_FAIL_RETURN(id, ret)                                             \
 194 do {                                                                         \
 195         if (OBD_FAIL_CHECK_ONCE(id)) {                                       \
 196                 RETURN(ret);                                                 \
 197         }                                                                    \
 198 } while(0)
 199
 200 #define OBD_FAIL_GOTO(id, label, ret)                                        \
 201 do {                                                                         \
 202         if (OBD_FAIL_CHECK_ONCE(id)) {                                       \
 203                 GOTO(label, (ret));                                          \
 204         }                                                                    \
 205 } while(0)
 206
 207 #define OBD_FAIL_TIMEOUT(id, secs)                                           \
 208 do {                                                                         \
 209         if  (OBD_FAIL_CHECK_ONCE(id)) {                                      \
 210                CERROR("obd_fail_timeout id %x sleeping for %d secs\n",       \
 211                         (id), (secs));                                       \
 212                 set_current_state(TASK_UNINTERRUPTIBLE);                     \
 213                 schedule_timeout((secs) * HZ);                               \
 214                 set_current_state(TASK_RUNNING);                             \
 215                 CERROR("obd_fail_timeout id %x awake\n", (id));              \
 216        }                                                                     \
 217 } while(0)
 218
 219 #ifdef __KERNEL__
 220
 221 /*
 222  * sleep_on() is known to be racy, using wait_event() interface instead as
 223  * recommended. --umka
 224  */
 225 #define OBD_SLEEP_ON(wq)                                                     \
 226 do {                                                                         \
 227         DEFINE_WAIT(__wait);                                                 \
 228         prepare_to_wait(&wq, &__wait, TASK_INTERRUPTIBLE);                   \
 229         schedule();                                                          \
 230         finish_wait(&wq, &__wait);                                           \
 231 } while (0)
 232
 233 /* The idea here is to synchronise two threads to force a race. The
 234  * first thread that calls this with a matching fail_loc is put to
 235  * sleep. The next thread that calls with the same fail_loc wakes up
 236  * the first and continues. */
 237 #define OBD_RACE(id)                                            \
 238 do {                                                            \
 239         if  (OBD_FAIL_CHECK_ONCE(id)) {                         \
 240                 CERROR("obd_race id %x sleeping\n", (id));      \
 241                 OBD_SLEEP_ON(obd_race_waitq);                   \
 242                 CERROR("obd_fail_race id %x awake\n", (id));    \
 243         } else if ((obd_fail_loc & OBD_FAIL_MASK_LOC) ==        \
 244                     ((id) & OBD_FAIL_MASK_LOC)) {               \
 245                 wake_up(&obd_race_waitq);                       \
 246         }                                                       \
 247 } while(0)
 248 #else
 249 /* sigh.  an expedient fix until OBD_RACE is fixed up */
 250 #define OBD_RACE(foo) LBUG()
 251 #endif
 252
 253 #define fixme() CDEBUG(D_OTHER, "FIXME\n");
 254
 255 #ifdef __KERNEL__
 256 # include <linux/types.h>
 257 # include <linux/blkdev.h>
 258
 259
 260 # if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0))
 261 #  define BDEVNAME_DECLARE_STORAGE(foo) char foo[BDEVNAME_SIZE]
 262 #  define ll_bdevname(SB, STORAGE) __bdevname(kdev_t_to_nr(SB->s_dev), STORAGE)
 263 #  define ll_lock_kernel lock_kernel()
 264 #  define ll_sbdev(SB)    ((SB)->s_bdev)
 265 #  define ll_sbdev_type      struct block_device *
 266 #  define ll_sbdev_sync      fsync_bdev
 267 # else
 268 #  define BDEVNAME_DECLARE_STORAGE(foo) char __unused_##foo
 269 #  define ll_sbdev(SB)    (kdev_t_to_nr((SB)->s_dev))
 270 #  define ll_sbdev_type      kdev_t
 271 #  define ll_sbdev_sync      fsync_dev
 272 #  define ll_bdevname(SB,STORAGE) ((void)__unused_##STORAGE,bdevname(ll_sbdev(SB)))
 273 #  define ll_lock_kernel
 274 # endif
 275
 276 #ifdef HAVE_OLD_DEV_SET_RDONLY
 277   void dev_set_rdonly(ll_sbdev_type dev, int no_write);
 278   void dev_clear_rdonly(int no_write);
 279 #else
 280   void dev_set_rdonly(ll_sbdev_type dev);
 281   void dev_clear_rdonly(ll_sbdev_type dev);
 282 #endif
 283 int dev_check_rdonly(ll_sbdev_type dev);
 284 #define ll_check_rdonly(dev) dev_check_rdonly(dev)
 285
 286 static inline void ll_set_rdonly(ll_sbdev_type dev)
 287 {
 288         CDEBUG(D_IOCTL | D_HA, "set dev %ld rdonly\n", (long)dev);
 289         ll_sbdev_sync(dev);
 290 #ifdef HAVE_OLD_DEV_SET_RDONLY
 291         dev_set_rdonly(dev, 2);
 292 #else
 293         dev_set_rdonly(dev);
 294 #endif
 295 }
 296
 297 static inline void ll_clear_rdonly(ll_sbdev_type dev)
 298 {
 299         CDEBUG(D_IOCTL | D_HA, "unset dev %ld rdonly\n", (long)dev);
 300         if (ll_check_rdonly(dev)) {
 301                 ll_sbdev_sync(dev);
 302 #ifdef HAVE_OLD_DEV_SET_RDONLY
 303                 dev_clear_rdonly(2);
 304 #else
 305                 dev_clear_rdonly(dev);
 306 #endif
 307         }
 308 }
 309
 310 static inline void OBD_FAIL_WRITE(int id, struct super_block *sb)
 311 {
 312         if (OBD_FAIL_CHECK(id)) {
 313                 BDEVNAME_DECLARE_STORAGE(tmp);
 314                 CERROR("obd_fail_loc=%x, fail write operation on %s\n",
 315                        id, ll_bdevname(sb, tmp));
 316                 ll_set_rdonly(ll_sbdev(sb));
 317                 /* We set FAIL_ONCE because we never "un-fail" a device */
 318                 obd_fail_loc |= OBD_FAILED | OBD_FAIL_ONCE;
 319         }
 320 }
 321 #else /* !__KERNEL__ */
 322 # define LTIME_S(time) (time)
 323 /* for obd_class.h */
 324 # ifndef ERR_PTR
 325 #  define ERR_PTR(a) ((void *)(a))
 326 # endif
 327 #endif  /* __KERNEL__ */
 328
 329 extern atomic_t portal_kmemory;
 330
 331 #if defined (CONFIG_DEBUG_MEMORY) && defined(__KERNEL__)
 332
 333 #define MT_FLAGS_WRONG_SIZE (1 << 0)
 334 #define MEM_LOC_LEN 128
 335
 336 struct mem_track {
 337         struct hlist_node m_hash;
 338         char m_loc[MEM_LOC_LEN];
 339         int m_flags;
 340         void *m_ptr;
 341         int m_size;
 342 };
 343
 344 void lvfs_memdbg_show(void);
 345 void lvfs_memdbg_insert(struct mem_track *mt);
 346 void lvfs_memdbg_remove(struct mem_track *mt);
 347 struct mem_track *lvfs_memdbg_find(void *ptr);
 348
 349 int lvfs_memdbg_check_insert(struct mem_track *mt);
 350 struct mem_track *lvfs_memdbg_check_remove(void *ptr);
 351
 352 static inline struct mem_track *
 353 __new_mem_track(void *ptr, int size,
 354                 char *file, int line)
 355 {
 356         struct mem_track *mt;
 357
 358         mt = kmalloc(sizeof(*mt), GFP_KERNEL);
 359         if (!mt)
 360                 return NULL;
 361
 362         snprintf(mt->m_loc, sizeof(mt->m_loc) - 1,
 363                  "%s:%d", file, line);
 364
 365         mt->m_size = size;
 366         mt->m_ptr = ptr;
 367         mt->m_flags = 0;
 368         return mt;
 369 }
 370
 371 static inline void
 372 __free_mem_track(struct mem_track *mt)
 373 {
 374         kfree(mt);
 375 }
 376
 377 static inline int
 378 __get_mem_track(void *ptr, int size,
 379                 char *file, int line)
 380 {
 381         struct mem_track *mt;
 382
 383         mt = __new_mem_track(ptr, size, file, line);
 384         if (!mt) {
 385                 CWARN("can't allocate new memory track\n");
 386                 return 0;
 387         }
 388
 389         if (!lvfs_memdbg_check_insert(mt))
 390                 __free_mem_track(mt);
 391
 392         return 1;
 393 }
 394
 395 static inline int
 396 __put_mem_track(void *ptr, int size,
 397                 char *file, int line)
 398 {
 399         struct mem_track *mt;
 400
 401         if (!(mt = lvfs_memdbg_check_remove(ptr))) {
 402                 CWARN("ptr 0x%p is not allocated. Attempt to free "
 403                       "not allocated memory at %s:%d\n", ptr,
 404                       file, line);
 405                 return 0;
 406         } else {
 407                 if (mt->m_size != size) {
 408                         mt->m_flags |= MT_FLAGS_WRONG_SIZE;
 409                         CWARN("freeing memory chunk of different size "
 410                               "than allocated (%d != %d) at %s:%d\n",
 411                               mt->m_size, size, file, line);
 412                 } else {
 413                         __free_mem_track(mt);
 414                 }
 415                 return 1;
 416         }
 417 }
 418
 419 #define get_mem_track(ptr, size, file, line)                                         \
 420         __get_mem_track((ptr), (size), (file), (line))
 421
 422 #define put_mem_track(ptr, size, file, line)                                         \
 423         __put_mem_track((ptr), (size), (file), (line))
 424
 425 #else /* !CONFIG_DEBUG_MEMORY */
 426
 427 #define get_mem_track(ptr, size, file, line)                                         \
 428         do {} while (0)
 429
 430 #define put_mem_track(ptr, size, file, line)                                         \
 431         do {} while (0)
 432 #endif /* !CONFIG_DEBUG_MEMORY */
 433
 434 #define OBD_ALLOC_GFP(ptr, size, gfp_mask)                                           \
 435 do {                                                                                 \
 436         (ptr) = kmalloc(size, (gfp_mask));                                           \
 437         if ((ptr) == NULL) {                                                         \
 438                 CERROR("kmalloc of '" #ptr "' (%d bytes) failed at %s:%d\n",         \
 439                        (int)(size), __FILE__, __LINE__);                             \
 440                 CERROR("%d total bytes allocated by Lustre, %d by Portals\n",        \
 441                        atomic_read(&obd_memory), atomic_read(&portal_kmemory));      \
 442         } else {                                                                     \
 443                 memset(ptr, 0, size);                                                \
 444                 atomic_add(size, &obd_memory);                                       \
 445                 if (atomic_read(&obd_memory) > obd_memmax)                           \
 446                         obd_memmax = atomic_read(&obd_memory);                       \
 447                 get_mem_track((ptr), (size), __FILE__, __LINE__);                    \
 448                 CDEBUG(D_MALLOC, "kmalloced '" #ptr "': %d at %p (tot %d)\n",        \
 449                        (int)(size), (ptr), atomic_read(&obd_memory));                \
 450         }                                                                            \
 451 } while (0)
 452
 453 #ifndef OBD_GFP_MASK
 454 # define OBD_GFP_MASK GFP_NOFS
 455 #endif
 456
 457 #ifdef __KERNEL__
 458 #define OBD_ALLOC(ptr, size) OBD_ALLOC_GFP(ptr, size, OBD_GFP_MASK)
 459 #else
 460 #define OBD_ALLOC(ptr, size) (ptr = malloc(size))
 461 #endif
 462
 463 #define OBD_ALLOC_WAIT(ptr, size) OBD_ALLOC_GFP(ptr, size, GFP_KERNEL)
 464
 465 #ifdef __arch_um__
 466 # define OBD_VMALLOC(ptr, size) OBD_ALLOC(ptr, size)
 467 #else
 468 # define OBD_VMALLOC(ptr, size)                                                      \
 469 do {                                                                                 \
 470         (ptr) = vmalloc(size);                                                       \
 471         if ((ptr) == NULL) {                                                         \
 472                 CERROR("vmalloc of '" #ptr "' (%d bytes) failed at %s:%d\n",         \
 473                        (int)(size), __FILE__, __LINE__);                             \
 474                 CERROR("%d total bytes allocated by Lustre, %d by Portals\n",        \
 475                        atomic_read(&obd_memory), atomic_read(&portal_kmemory));      \
 476         } else {                                                                     \
 477                 memset(ptr, 0, size);                                                \
 478                 atomic_add(size, &obd_memory);                                       \
 479                 if (atomic_read(&obd_memory) > obd_memmax)                           \
 480                         obd_memmax = atomic_read(&obd_memory);                       \
 481                 get_mem_track((ptr), (size), __FILE__, __LINE__);                    \
 482                 CDEBUG(D_MALLOC, "vmalloced '" #ptr "': %d at %p (tot %d)\n",        \
 483                        (int)(size), ptr, atomic_read(&obd_memory));                  \
 484         }                                                                            \
 485 } while (0)
 486 #endif
 487
 488 #ifdef CONFIG_DEBUG_SLAB
 489 #define POISON(ptr, c, s) do {} while (0)
 490 #else
 491 #define POISON(ptr, c, s) memset(ptr, c, s)
 492 #endif
 493
 494 #if POISON_BULK
 495 #define POISON_PAGE(page, val) do { memset(kmap(page), val, PAGE_SIZE);              \
 496                                     kunmap(page); } while (0)
 497 #else
 498 #define POISON_PAGE(page, val) do { } while (0)
 499 #endif
 500
 501 #ifdef __KERNEL__
 502 #define OBD_FREE(ptr, size)                                                          \
 503 do {                                                                                 \
 504         LASSERT(ptr);                                                                \
 505         put_mem_track((ptr), (size), __FILE__, __LINE__);                            \
 506         atomic_sub(size, &obd_memory);                                               \
 507         CDEBUG(D_MALLOC, "kfreed '" #ptr "': %d at %p (tot %d).\n",                  \
 508                (int)(size), ptr, atomic_read(&obd_memory));                          \
 509         POISON(ptr, 0x5a, size);                                                     \
 510         kfree(ptr);                                                                  \
 511         (ptr) = (void *)0xdeadbeef;                                                  \
 512 } while (0)
 513 #else
 514 #define OBD_FREE(ptr, size) ((void)(size), free((ptr)))
 515 #endif
 516
 517 #ifdef __arch_um__
 518 # define OBD_VFREE(ptr, size) OBD_FREE(ptr, size)
 519 #else
 520 # define OBD_VFREE(ptr, size)                                                        \
 521 do {                                                                                 \
 522         LASSERT(ptr);                                                                \
 523         put_mem_track((ptr), (size), __FILE__, __LINE__);                            \
 524         atomic_sub(size, &obd_memory);                                               \
 525         CDEBUG(D_MALLOC, "vfreed '" #ptr "': %d at %p (tot %d).\n",                  \
 526                (int)(size), ptr, atomic_read(&obd_memory));                          \
 527         POISON(ptr, 0x5a, size);                                                     \
 528         vfree(ptr);                                                                  \
 529         (ptr) = (void *)0xdeadbeef;                                                  \
 530 } while (0)
 531 #endif
 532
 533 /*
 534  * we memset() the slab object to 0 when allocation succeeds, so DO NOT HAVE A
 535  * CTOR THAT DOES ANYTHING. Its work will be cleared here. We'd love to assert
 536  * on that, but slab.c keeps kmem_cache_s all to itself.
 537  */
 538 #define OBD_SLAB_ALLOC(ptr, slab, type, size)                                         \
 539 do {                                                                                  \
 540         LASSERT(!in_interrupt());                                                     \
 541         (ptr) = kmem_cache_alloc(slab, (type));                                       \
 542         if ((ptr) == NULL) {                                                          \
 543                 CERROR("slab-alloc of '"#ptr"' (%d bytes) failed at %s:%d\n",         \
 544                        (int)(size), __FILE__, __LINE__);                              \
 545                 CERROR("%d total bytes allocated by Lustre, %d by Portals\n",         \
 546                        atomic_read(&obd_memory), atomic_read(&portal_kmemory));       \
 547         } else {                                                                      \
 548                 memset(ptr, 0, size);                                                 \
 549                 atomic_add(size, &obd_memory);                                        \
 550                 if (atomic_read(&obd_memory) > obd_memmax)                            \
 551                         obd_memmax = atomic_read(&obd_memory);                        \
 552                 get_mem_track((ptr), (size), __FILE__, __LINE__);                     \
 553                 CDEBUG(D_MALLOC, "slab-alloced '"#ptr"': %d at %p (tot %d)\n",        \
 554                        (int)(size), ptr, atomic_read(&obd_memory));                   \
 555         }                                                                             \
 556 } while (0)
 557
 558 #define OBD_SLAB_FREE(ptr, slab, size)                                                \
 559 do {                                                                                  \
 560         LASSERT(ptr);                                                                 \
 561         CDEBUG(D_MALLOC, "slab-freed '" #ptr "': %d at %p (tot %d).\n",               \
 562                (int)(size), ptr, atomic_read(&obd_memory));                           \
 563         put_mem_track((ptr), (size), __FILE__, __LINE__);                             \
 564         atomic_sub(size, &obd_memory);                                                \
 565         POISON(ptr, 0x5a, size);                                                      \
 566         kmem_cache_free(slab, ptr);                                                   \
 567         (ptr) = (void *)0xdeadbeef;                                                   \
 568 } while (0)
 569
 570 #endif