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
  95 #define OBD_FAIL_OST                     0x200
  96 #define OBD_FAIL_OST_CONNECT_NET         0x201
  97 #define OBD_FAIL_OST_DISCONNECT_NET      0x202
  98 #define OBD_FAIL_OST_GET_INFO_NET        0x203
  99 #define OBD_FAIL_OST_CREATE_NET          0x204
 100 #define OBD_FAIL_OST_DESTROY_NET         0x205
 101 #define OBD_FAIL_OST_GETATTR_NET         0x206
 102 #define OBD_FAIL_OST_SETATTR_NET         0x207
 103 #define OBD_FAIL_OST_OPEN_NET            0x208
 104 #define OBD_FAIL_OST_CLOSE_NET           0x209
 105 #define OBD_FAIL_OST_BRW_NET             0x20a
 106 #define OBD_FAIL_OST_PUNCH_NET           0x20b
 107 #define OBD_FAIL_OST_STATFS_NET          0x20c
 108 #define OBD_FAIL_OST_HANDLE_UNPACK       0x20d
 109 #define OBD_FAIL_OST_BRW_WRITE_BULK      0x20e
 110 #define OBD_FAIL_OST_BRW_READ_BULK       0x20f
 111 #define OBD_FAIL_OST_SYNC_NET            0x210
 112 #define OBD_FAIL_OST_ALL_REPLY_NET       0x211
 113 #define OBD_FAIL_OST_ALL_REQUESTS_NET    0x212
 114 #define OBD_FAIL_OST_LDLM_REPLY_NET      0x213
 115 #define OBD_FAIL_OST_BRW_PAUSE_BULK      0x214
 116 #define OBD_FAIL_OST_ENOSPC              0x215
 117 #define OBD_FAIL_OST_EROFS               0x216
 118
 119
 120 #define OBD_FAIL_LDLM                    0x300
 121 #define OBD_FAIL_LDLM_NAMESPACE_NEW      0x301
 122 #define OBD_FAIL_LDLM_ENQUEUE            0x302
 123 #define OBD_FAIL_LDLM_CONVERT            0x303
 124 #define OBD_FAIL_LDLM_CANCEL             0x304
 125 #define OBD_FAIL_LDLM_BL_CALLBACK        0x305
 126 #define OBD_FAIL_LDLM_CP_CALLBACK        0x306
 127 #define OBD_FAIL_LDLM_GL_CALLBACK        0x307
 128 #define OBD_FAIL_LDLM_ENQUEUE_EXTENT_ERR 0x308
 129 #define OBD_FAIL_LDLM_ENQUEUE_INTENT_ERR 0x309
 130 #define OBD_FAIL_LDLM_CREATE_RESOURCE    0x30a
 131 #define OBD_FAIL_LDLM_ENQUEUE_BLOCKED    0x30b
 132 #define OBD_FAIL_LDLM_REPLY              0x30c
 133
 134
 135 #define OBD_FAIL_OSC                     0x400
 136 #define OBD_FAIL_OSC_BRW_READ_BULK       0x401
 137 #define OBD_FAIL_OSC_BRW_WRITE_BULK      0x402
 138 #define OBD_FAIL_OSC_LOCK_BL_AST         0x403
 139 #define OBD_FAIL_OSC_LOCK_CP_AST         0x404
 140 #define OBD_FAIL_OSC_MATCH               0x405
 141
 142 #define OBD_FAIL_PTLRPC                  0x500
 143 #define OBD_FAIL_PTLRPC_ACK              0x501
 144 #define OBD_FAIL_PTLRPC_RQBD             0x502
 145 #define OBD_FAIL_PTLRPC_BULK_GET_NET     0x503
 146 #define OBD_FAIL_PTLRPC_BULK_PUT_NET     0x504
 147
 148 #define OBD_FAIL_OBD_PING_NET            0x600
 149 #define OBD_FAIL_OBD_LOG_CANCEL_NET      0x601
 150 #define OBD_FAIL_OBD_LOGD_NET            0x602
 151
 152 #define OBD_FAIL_TGT_REPLY_NET           0x700
 153 #define OBD_FAIL_TGT_CONN_RACE           0x701
 154
 155 #define OBD_FAIL_SVCSEC_ACCEPT_BEG       0x750
 156 #define OBD_FAIL_SVCSEC_ACCEPT_END       0x751
 157 #define OBD_FAIL_SVCSEC_WRAP_BEG         0x752
 158 #define OBD_FAIL_SVCSEC_WRAP_END         0x753
 159 #define OBD_FAIL_SVCGSS_ERR_NOTIFY       0x760
 160 #define OBD_FAIL_SVCGSS_INIT_REQ         0x780
 161 #define OBD_FAIL_SVCGSS_INIT_REP         0x781
 162
 163 #define OBD_FAIL_MDC_REVALIDATE_PAUSE    0x800
 164
 165 /* preparation for a more advanced failure testbed (not functional yet) */
 166 #define OBD_FAIL_MASK_SYS    0x0000FF00
 167 #define OBD_FAIL_MASK_LOC    (0x000000FF | OBD_FAIL_MASK_SYS)
 168 #define OBD_FAIL_ONCE        0x80000000
 169 #define OBD_FAILED           0x40000000
 170 #define OBD_FAIL_MDS_ALL_NET 0x01000000
 171 #define OBD_FAIL_OST_ALL_NET 0x02000000
 172
 173 #define OBD_FAIL_CHECK(id)   (((obd_fail_loc & OBD_FAIL_MASK_LOC) ==           \
 174                               ((id) & OBD_FAIL_MASK_LOC)) &&                   \
 175                               ((obd_fail_loc & (OBD_FAILED | OBD_FAIL_ONCE))!= \
 176                                 (OBD_FAILED | OBD_FAIL_ONCE)))
 177
 178 #define OBD_FAIL_CHECK_ONCE(id)                                              \
 179 ({      int _ret_ = 0;                                                       \
 180         if (OBD_FAIL_CHECK(id)) {                                            \
 181                 CERROR("obd_fail_loc=%x\n", id);                             \
 182                 obd_fail_loc |= OBD_FAILED;                                  \
 183                 if ((id) & OBD_FAIL_ONCE)                                    \
 184                         obd_fail_loc |= OBD_FAIL_ONCE;                       \
 185                 _ret_ = 1;                                                   \
 186         }                                                                    \
 187         _ret_;                                                               \
 188 })
 189
 190 #define OBD_FAIL_RETURN(id, ret)                                             \
 191 do {                                                                         \
 192         if (OBD_FAIL_CHECK_ONCE(id)) {                                       \
 193                 RETURN(ret);                                                 \
 194         }                                                                    \
 195 } while(0)
 196
 197 #define OBD_FAIL_GOTO(id, label, ret)                                        \
 198 do {                                                                         \
 199         if (OBD_FAIL_CHECK_ONCE(id)) {                                       \
 200                 GOTO(label, (ret));                                          \
 201         }                                                                    \
 202 } while(0)
 203
 204 #define OBD_FAIL_TIMEOUT(id, secs)                                           \
 205 do {                                                                         \
 206         if  (OBD_FAIL_CHECK_ONCE(id)) {                                      \
 207                CERROR("obd_fail_timeout id %x sleeping for %d secs\n",       \
 208                         (id), (secs));                                       \
 209                 set_current_state(TASK_UNINTERRUPTIBLE);                     \
 210                 schedule_timeout((secs) * HZ);                               \
 211                 set_current_state(TASK_RUNNING);                             \
 212                 CERROR("obd_fail_timeout id %x awake\n", (id));              \
 213        }                                                                     \
 214 } while(0)
 215
 216 #ifdef __KERNEL__
 217
 218 /*
 219  * sleep_on() is known to be racy, using wait_event() interface instead as
 220  * recommended. --umka
 221  */
 222 #define OBD_SLEEP_ON(wq)                                                     \
 223 do {                                                                         \
 224         DEFINE_WAIT(__wait);                                                 \
 225         prepare_to_wait(&wq, &__wait, TASK_INTERRUPTIBLE);                   \
 226         schedule();                                                          \
 227         finish_wait(&wq, &__wait);                                           \
 228 } while (0)
 229
 230 /* The idea here is to synchronise two threads to force a race. The
 231  * first thread that calls this with a matching fail_loc is put to
 232  * sleep. The next thread that calls with the same fail_loc wakes up
 233  * the first and continues. */
 234 #define OBD_RACE(id)                                            \
 235 do {                                                            \
 236         if  (OBD_FAIL_CHECK_ONCE(id)) {                         \
 237                 CERROR("obd_race id %x sleeping\n", (id));      \
 238                 OBD_SLEEP_ON(obd_race_waitq);                   \
 239                 CERROR("obd_fail_race id %x awake\n", (id));    \
 240         } else if ((obd_fail_loc & OBD_FAIL_MASK_LOC) ==        \
 241                     ((id) & OBD_FAIL_MASK_LOC)) {               \
 242                 wake_up(&obd_race_waitq);                       \
 243         }                                                       \
 244 } while(0)
 245 #else
 246 /* sigh.  an expedient fix until OBD_RACE is fixed up */
 247 #define OBD_RACE(foo) LBUG()
 248 #endif
 249
 250 #define fixme() CDEBUG(D_OTHER, "FIXME\n");
 251
 252 #ifdef __KERNEL__
 253 # include <linux/types.h>
 254 # include <linux/blkdev.h>
 255
 256
 257 # if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0))
 258 #  define BDEVNAME_DECLARE_STORAGE(foo) char foo[BDEVNAME_SIZE]
 259 #  define ll_bdevname(SB, STORAGE) __bdevname(kdev_t_to_nr(SB->s_dev), STORAGE)
 260 #  define ll_lock_kernel lock_kernel()
 261 #  define ll_sbdev(SB)    ((SB)->s_bdev)
 262 #  define ll_sbdev_type      struct block_device *
 263 #  define ll_sbdev_sync      fsync_bdev
 264 # else
 265 #  define BDEVNAME_DECLARE_STORAGE(foo) char __unused_##foo
 266 #  define ll_sbdev(SB)    (kdev_t_to_nr((SB)->s_dev))
 267 #  define ll_sbdev_type      kdev_t
 268 #  define ll_sbdev_sync      fsync_dev
 269 #  define ll_bdevname(SB,STORAGE) ((void)__unused_##STORAGE,bdevname(ll_sbdev(SB)))
 270 #  define ll_lock_kernel
 271 # endif
 272
 273 #ifdef HAVE_OLD_DEV_SET_RDONLY
 274   void dev_set_rdonly(ll_sbdev_type dev, int no_write);
 275   void dev_clear_rdonly(int no_write);
 276 #else
 277   void dev_set_rdonly(ll_sbdev_type dev);
 278   void dev_clear_rdonly(ll_sbdev_type dev);
 279 #endif
 280 int dev_check_rdonly(ll_sbdev_type dev);
 281 #define ll_check_rdonly(dev) dev_check_rdonly(dev)
 282
 283 static inline void ll_set_rdonly(ll_sbdev_type dev)
 284 {
 285         CDEBUG(D_IOCTL | D_HA, "set dev %ld rdonly\n", (long)dev);
 286         ll_sbdev_sync(dev);
 287 #ifdef HAVE_OLD_DEV_SET_RDONLY
 288         dev_set_rdonly(dev, 2);
 289 #else
 290         dev_set_rdonly(dev);
 291 #endif
 292 }
 293
 294 static inline void ll_clear_rdonly(ll_sbdev_type dev)
 295 {
 296         CDEBUG(D_IOCTL | D_HA, "unset dev %ld rdonly\n", (long)dev);
 297         if (ll_check_rdonly(dev)) {
 298                 ll_sbdev_sync(dev);
 299 #ifdef HAVE_OLD_DEV_SET_RDONLY
 300                 dev_clear_rdonly(2);
 301 #else
 302                 dev_clear_rdonly(dev);
 303 #endif
 304         }
 305 }
 306
 307 static inline void OBD_FAIL_WRITE(int id, struct super_block *sb)
 308 {
 309         if (OBD_FAIL_CHECK(id)) {
 310                 BDEVNAME_DECLARE_STORAGE(tmp);
 311                 CERROR("obd_fail_loc=%x, fail write operation on %s\n",
 312                        id, ll_bdevname(sb, tmp));
 313                 ll_set_rdonly(ll_sbdev(sb));
 314                 /* We set FAIL_ONCE because we never "un-fail" a device */
 315                 obd_fail_loc |= OBD_FAILED | OBD_FAIL_ONCE;
 316         }
 317 }
 318 #else /* !__KERNEL__ */
 319 # define LTIME_S(time) (time)
 320 /* for obd_class.h */
 321 # ifndef ERR_PTR
 322 #  define ERR_PTR(a) ((void *)(a))
 323 # endif
 324 #endif  /* __KERNEL__ */
 325
 326 extern atomic_t portal_kmemory;
 327
 328 #if defined (CONFIG_DEBUG_MEMORY) && defined(__KERNEL__)
 329
 330 #define MT_FLAGS_WRONG_SIZE (1 << 0)
 331 #define MEM_LOC_LEN 128
 332
 333 struct mem_track {
 334         struct hlist_node m_hash;
 335         char m_loc[MEM_LOC_LEN];
 336         int m_flags;
 337         void *m_ptr;
 338         int m_size;
 339 };
 340
 341 void lvfs_memdbg_show(void);
 342 void lvfs_memdbg_insert(struct mem_track *mt);
 343 void lvfs_memdbg_remove(struct mem_track *mt);
 344 struct mem_track *lvfs_memdbg_find(void *ptr);
 345
 346 int lvfs_memdbg_check_insert(struct mem_track *mt);
 347 struct mem_track *lvfs_memdbg_check_remove(void *ptr);
 348
 349 static inline struct mem_track *
 350 __new_mem_track(void *ptr, int size,
 351                 char *file, int line)
 352 {
 353         struct mem_track *mt;
 354
 355         mt = kmalloc(sizeof(*mt), GFP_KERNEL);
 356         if (!mt)
 357                 return NULL;
 358
 359         snprintf(mt->m_loc, sizeof(mt->m_loc) - 1,
 360                  "%s:%d", file, line);
 361
 362         mt->m_size = size;
 363         mt->m_ptr = ptr;
 364         mt->m_flags = 0;
 365         return mt;
 366 }
 367
 368 static inline void
 369 __free_mem_track(struct mem_track *mt)
 370 {
 371         kfree(mt);
 372 }
 373
 374 static inline int
 375 __get_mem_track(void *ptr, int size,
 376                 char *file, int line)
 377 {
 378         struct mem_track *mt;
 379
 380         mt = __new_mem_track(ptr, size, file, line);
 381         if (!mt) {
 382                 CWARN("can't allocate new memory track\n");
 383                 return 0;
 384         }
 385
 386         if (!lvfs_memdbg_check_insert(mt))
 387                 __free_mem_track(mt);
 388
 389         return 1;
 390 }
 391
 392 static inline int
 393 __put_mem_track(void *ptr, int size,
 394                 char *file, int line)
 395 {
 396         struct mem_track *mt;
 397
 398         if (!(mt = lvfs_memdbg_check_remove(ptr))) {
 399                 CWARN("ptr 0x%p is not allocated. Attempt to free "
 400                       "not allocated memory at %s:%d\n", ptr,
 401                       file, line);
 402                 return 0;
 403         } else {
 404                 if (mt->m_size != size) {
 405                         mt->m_flags |= MT_FLAGS_WRONG_SIZE;
 406                         CWARN("freeing memory chunk of different size "
 407                               "than allocated (%d != %d) at %s:%d\n",
 408                               mt->m_size, size, file, line);
 409                 } else {
 410                         __free_mem_track(mt);
 411                 }
 412                 return 1;
 413         }
 414 }
 415
 416 #define get_mem_track(ptr, size, file, line)                                         \
 417         __get_mem_track((ptr), (size), (file), (line))
 418
 419 #define put_mem_track(ptr, size, file, line)                                         \
 420         __put_mem_track((ptr), (size), (file), (line))
 421
 422 #else /* !CONFIG_DEBUG_MEMORY */
 423
 424 #define get_mem_track(ptr, size, file, line)                                         \
 425         do {} while (0)
 426
 427 #define put_mem_track(ptr, size, file, line)                                         \
 428         do {} while (0)
 429 #endif /* !CONFIG_DEBUG_MEMORY */
 430
 431 #define OBD_ALLOC_GFP(ptr, size, gfp_mask)                                           \
 432 do {                                                                                 \
 433         (ptr) = kmalloc(size, (gfp_mask));                                           \
 434         if ((ptr) == NULL) {                                                         \
 435                 CERROR("kmalloc of '" #ptr "' (%d bytes) failed at %s:%d\n",         \
 436                        (int)(size), __FILE__, __LINE__);                             \
 437                 CERROR("%d total bytes allocated by Lustre, %d by Portals\n",        \
 438                        atomic_read(&obd_memory), atomic_read(&portal_kmemory));      \
 439         } else {                                                                     \
 440                 memset(ptr, 0, size);                                                \
 441                 atomic_add(size, &obd_memory);                                       \
 442                 if (atomic_read(&obd_memory) > obd_memmax)                           \
 443                         obd_memmax = atomic_read(&obd_memory);                       \
 444                 get_mem_track((ptr), (size), __FILE__, __LINE__);                    \
 445                 CDEBUG(D_MALLOC, "kmalloced '" #ptr "': %d at %p (tot %d)\n",        \
 446                        (int)(size), (ptr), atomic_read(&obd_memory));                \
 447         }                                                                            \
 448 } while (0)
 449
 450 #ifndef OBD_GFP_MASK
 451 # define OBD_GFP_MASK GFP_NOFS
 452 #endif
 453
 454 #ifdef __KERNEL__
 455 #define OBD_ALLOC(ptr, size) OBD_ALLOC_GFP(ptr, size, OBD_GFP_MASK)
 456 #else
 457 #define OBD_ALLOC(ptr, size) (ptr = malloc(size))
 458 #endif
 459
 460 #define OBD_ALLOC_WAIT(ptr, size) OBD_ALLOC_GFP(ptr, size, GFP_KERNEL)
 461
 462 #ifdef __arch_um__
 463 # define OBD_VMALLOC(ptr, size) OBD_ALLOC(ptr, size)
 464 #else
 465 # define OBD_VMALLOC(ptr, size)                                                      \
 466 do {                                                                                 \
 467         (ptr) = vmalloc(size);                                                       \
 468         if ((ptr) == NULL) {                                                         \
 469                 CERROR("vmalloc of '" #ptr "' (%d bytes) failed at %s:%d\n",         \
 470                        (int)(size), __FILE__, __LINE__);                             \
 471                 CERROR("%d total bytes allocated by Lustre, %d by Portals\n",        \
 472                        atomic_read(&obd_memory), atomic_read(&portal_kmemory));      \
 473         } else {                                                                     \
 474                 memset(ptr, 0, size);                                                \
 475                 atomic_add(size, &obd_memory);                                       \
 476                 if (atomic_read(&obd_memory) > obd_memmax)                           \
 477                         obd_memmax = atomic_read(&obd_memory);                       \
 478                 get_mem_track((ptr), (size), __FILE__, __LINE__);                    \
 479                 CDEBUG(D_MALLOC, "vmalloced '" #ptr "': %d at %p (tot %d)\n",        \
 480                        (int)(size), ptr, atomic_read(&obd_memory));                  \
 481         }                                                                            \
 482 } while (0)
 483 #endif
 484
 485 #ifdef CONFIG_DEBUG_SLAB
 486 #define POISON(ptr, c, s) do {} while (0)
 487 #else
 488 #define POISON(ptr, c, s) memset(ptr, c, s)
 489 #endif
 490
 491 #if POISON_BULK
 492 #define POISON_PAGE(page, val) do { memset(kmap(page), val, PAGE_SIZE);              \
 493                                     kunmap(page); } while (0)
 494 #else
 495 #define POISON_PAGE(page, val) do { } while (0)
 496 #endif
 497
 498 #ifdef __KERNEL__
 499 #define OBD_FREE(ptr, size)                                                          \
 500 do {                                                                                 \
 501         LASSERT(ptr);                                                                \
 502         put_mem_track((ptr), (size), __FILE__, __LINE__);                            \
 503         atomic_sub(size, &obd_memory);                                               \
 504         CDEBUG(D_MALLOC, "kfreed '" #ptr "': %d at %p (tot %d).\n",                  \
 505                (int)(size), ptr, atomic_read(&obd_memory));                          \
 506         POISON(ptr, 0x5a, size);                                                     \
 507         kfree(ptr);                                                                  \
 508         (ptr) = (void *)0xdeadbeef;                                                  \
 509 } while (0)
 510 #else
 511 #define OBD_FREE(ptr, size) ((void)(size), free((ptr)))
 512 #endif
 513
 514 #ifdef __arch_um__
 515 # define OBD_VFREE(ptr, size) OBD_FREE(ptr, size)
 516 #else
 517 # define OBD_VFREE(ptr, size)                                                        \
 518 do {                                                                                 \
 519         LASSERT(ptr);                                                                \
 520         put_mem_track((ptr), (size), __FILE__, __LINE__);                            \
 521         atomic_sub(size, &obd_memory);                                               \
 522         CDEBUG(D_MALLOC, "vfreed '" #ptr "': %d at %p (tot %d).\n",                  \
 523                (int)(size), ptr, atomic_read(&obd_memory));                          \
 524         POISON(ptr, 0x5a, size);                                                     \
 525         vfree(ptr);                                                                  \
 526         (ptr) = (void *)0xdeadbeef;                                                  \
 527 } while (0)
 528 #endif
 529
 530 /*
 531  * we memset() the slab object to 0 when allocation succeeds, so DO NOT HAVE A
 532  * CTOR THAT DOES ANYTHING. Its work will be cleared here. We'd love to assert
 533  * on that, but slab.c keeps kmem_cache_s all to itself.
 534  */
 535 #define OBD_SLAB_ALLOC(ptr, slab, type, size)                                         \
 536 do {                                                                                  \
 537         LASSERT(!in_interrupt());                                                     \
 538         (ptr) = kmem_cache_alloc(slab, (type));                                       \
 539         if ((ptr) == NULL) {                                                          \
 540                 CERROR("slab-alloc of '"#ptr"' (%d bytes) failed at %s:%d\n",         \
 541                        (int)(size), __FILE__, __LINE__);                              \
 542                 CERROR("%d total bytes allocated by Lustre, %d by Portals\n",         \
 543                        atomic_read(&obd_memory), atomic_read(&portal_kmemory));       \
 544         } else {                                                                      \
 545                 memset(ptr, 0, size);                                                 \
 546                 atomic_add(size, &obd_memory);                                        \
 547                 if (atomic_read(&obd_memory) > obd_memmax)                            \
 548                         obd_memmax = atomic_read(&obd_memory);                        \
 549                 get_mem_track((ptr), (size), __FILE__, __LINE__);                     \
 550                 CDEBUG(D_MALLOC, "slab-alloced '"#ptr"': %d at %p (tot %d)\n",        \
 551                        (int)(size), ptr, atomic_read(&obd_memory));                   \
 552         }                                                                             \
 553 } while (0)
 554
 555 #define OBD_SLAB_FREE(ptr, slab, size)                                                \
 556 do {                                                                                  \
 557         LASSERT(ptr);                                                                 \
 558         CDEBUG(D_MALLOC, "slab-freed '" #ptr "': %d at %p (tot %d).\n",               \
 559                (int)(size), ptr, atomic_read(&obd_memory));                           \
 560         put_mem_track((ptr), (size), __FILE__, __LINE__);                             \
 561         atomic_sub(size, &obd_memory);                                                \
 562         POISON(ptr, 0x5a, size);                                                      \
 563         kmem_cache_free(slab, ptr);                                                   \
 564         (ptr) = (void *)0xdeadbeef;                                                   \
 565 } while (0)
 566
 567 #endif