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