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