lustre/include/obd_support.h

   1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
   2  * vim:expandtab:shiftwidth=8:tabstop=8:
   3  *
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  10  * as published by the Free Software Foundation.
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  28 /*
  29  * Copyright  2008 Sun Microsystems, Inc. All rights reserved
  30  * Use is subject to license terms.
  31  */
  32 /*
  33  * This file is part of Lustre, http://www.lustre.org/
  34  * Lustre is a trademark of Sun Microsystems, Inc.
  35  */
  36
  37 #ifndef _OBD_SUPPORT
  38 #define _OBD_SUPPORT
  39
  40 #include <libcfs/libcfs.h>
  41 #include <lvfs.h>
  42 #include <lprocfs_status.h>
  43
  44 #if defined(__linux__)
  45 #include <linux/obd_support.h>
  46 #elif defined(__APPLE__)
  47 #include <darwin/obd_support.h>
  48 #elif defined(__WINNT__)
  49 #include <winnt/obd_support.h>
  50 #else
  51 #error Unsupported operating system.
  52 #endif
  53
  54 /* global variables */
  55 extern struct lprocfs_stats *obd_memory;
  56 enum {
  57         OBD_MEMORY_STAT = 0,
  58         OBD_MEMORY_PAGES_STAT = 1,
  59         OBD_STATS_NUM,
  60 };
  61
  62 enum {
  63         OBD_FAIL_LOC_NOSET      = 0,
  64         OBD_FAIL_LOC_ORSET      = 1,
  65         OBD_FAIL_LOC_RESET      = 2
  66 };
  67
  68 extern unsigned long obd_fail_loc;
  69 extern unsigned int obd_fail_val;
  70 extern unsigned int obd_debug_peer_on_timeout;
  71 extern unsigned int obd_dump_on_timeout;
  72 extern unsigned int obd_dump_on_eviction;
  73 /* obd_timeout should only be used for recovery, not for
  74    networking / disk / timings affected by load (use Adaptive Timeouts) */
  75 extern unsigned int obd_timeout;          /* seconds */
  76 extern unsigned int ldlm_timeout;         /* seconds */
  77 extern unsigned int obd_sync_filter;
  78 extern unsigned int obd_max_dirty_pages;
  79 extern atomic_t obd_dirty_pages;
  80 extern atomic_t obd_dirty_transit_pages;
  81 extern cfs_waitq_t obd_race_waitq;
  82 extern int obd_race_state;
  83 extern unsigned int obd_alloc_fail_rate;
  84
  85 int __obd_fail_check_set(__u32 id, __u32 value, int set);
  86 int __obd_fail_timeout_set(__u32 id, __u32 value, int ms, int set);
  87
  88 /* lvfs.c */
  89 int obd_alloc_fail(const void *ptr, const char *name, const char *type,
  90                    size_t size, const char *file, int line);
  91
  92 /* Timeout definitions */
  93 #define OBD_TIMEOUT_DEFAULT             100
  94 #define LDLM_TIMEOUT_DEFAULT            20
  95 #define MDS_LDLM_TIMEOUT_DEFAULT        6
  96 /* Time to wait for all clients to reconnect during recovery */
  97 /* Should be very conservative; must catch the first reconnect after reboot */
  98 #define OBD_RECOVERY_FACTOR (3) /* times obd_timeout */
  99 /* Change recovery-small 26b time if you change this */
 100 #define PING_INTERVAL max(obd_timeout / 4, 1U)
 101 /* Client may skip 1 ping; we must wait at least 2.5. But for multiple
 102  * failover targets the client only pings one server at a time, and pings
 103  * can be lost on a loaded network. Since eviction has serious consequences,
 104  * and there's no urgent need to evict a client just because it's idle, we
 105  * should be very conservative here. */
 106 #define PING_EVICT_TIMEOUT (PING_INTERVAL * 6)
 107 #define DISK_TIMEOUT 50          /* Beyond this we warn about disk speed */
 108 #define CONNECTION_SWITCH_MIN 5U /* Connection switching rate limiter */
 109  /* Max connect interval for nonresponsive servers; ~50s to avoid building up
 110     connect requests in the LND queues, but within obd_timeout so we don't
 111     miss the recovery window */
 112 #define CONNECTION_SWITCH_MAX min(50U, max(CONNECTION_SWITCH_MIN,obd_timeout))
 113 #define CONNECTION_SWITCH_INC 5  /* Connection timeout backoff */
 114 #ifndef CRAY_XT3
 115 /* In general this should be low to have quick detection of a system
 116    running on a backup server. (If it's too low, import_select_connection
 117    will increase the timeout anyhow.)  */
 118 #define INITIAL_CONNECT_TIMEOUT max(CONNECTION_SWITCH_MIN,obd_timeout/20)
 119 #else
 120 /* ...but for very large systems (e.g. CRAY) we need to keep the initial
 121    connect t.o. high (bz 10803), because they will nearly ALWAYS be doing the
 122    connects for the first time (clients "reboot" after every process, so no
 123    chance to generate adaptive timeout data. */
 124 #define INITIAL_CONNECT_TIMEOUT max(CONNECTION_SWITCH_MIN,obd_timeout/2)
 125 #endif
 126 #define LONG_UNLINK 300          /* Unlink should happen before now */
 127
 128
 129 #define OBD_FAIL_MDS                     0x100
 130 #define OBD_FAIL_MDS_HANDLE_UNPACK       0x101
 131 #define OBD_FAIL_MDS_GETATTR_NET         0x102
 132 #define OBD_FAIL_MDS_GETATTR_PACK        0x103
 133 #define OBD_FAIL_MDS_READPAGE_NET        0x104
 134 #define OBD_FAIL_MDS_READPAGE_PACK       0x105
 135 #define OBD_FAIL_MDS_SENDPAGE            0x106
 136 #define OBD_FAIL_MDS_REINT_NET           0x107
 137 #define OBD_FAIL_MDS_REINT_UNPACK        0x108
 138 #define OBD_FAIL_MDS_REINT_SETATTR       0x109
 139 #define OBD_FAIL_MDS_REINT_SETATTR_WRITE 0x10a
 140 #define OBD_FAIL_MDS_REINT_CREATE        0x10b
 141 #define OBD_FAIL_MDS_REINT_CREATE_WRITE  0x10c
 142 #define OBD_FAIL_MDS_REINT_UNLINK        0x10d
 143 #define OBD_FAIL_MDS_REINT_UNLINK_WRITE  0x10e
 144 #define OBD_FAIL_MDS_REINT_LINK          0x10f
 145 #define OBD_FAIL_MDS_REINT_LINK_WRITE    0x110
 146 #define OBD_FAIL_MDS_REINT_RENAME        0x111
 147 #define OBD_FAIL_MDS_REINT_RENAME_WRITE  0x112
 148 #define OBD_FAIL_MDS_OPEN_NET            0x113
 149 #define OBD_FAIL_MDS_OPEN_PACK           0x114
 150 #define OBD_FAIL_MDS_CLOSE_NET           0x115
 151 #define OBD_FAIL_MDS_CLOSE_PACK          0x116
 152 #define OBD_FAIL_MDS_CONNECT_NET         0x117
 153 #define OBD_FAIL_MDS_CONNECT_PACK        0x118
 154 #define OBD_FAIL_MDS_REINT_NET_REP       0x119
 155 #define OBD_FAIL_MDS_DISCONNECT_NET      0x11a
 156 #define OBD_FAIL_MDS_GETSTATUS_NET       0x11b
 157 #define OBD_FAIL_MDS_GETSTATUS_PACK      0x11c
 158 #define OBD_FAIL_MDS_STATFS_PACK         0x11d
 159 #define OBD_FAIL_MDS_STATFS_NET          0x11e
 160 #define OBD_FAIL_MDS_GETATTR_NAME_NET    0x11f
 161 #define OBD_FAIL_MDS_PIN_NET             0x120
 162 #define OBD_FAIL_MDS_UNPIN_NET           0x121
 163 #define OBD_FAIL_MDS_ALL_REPLY_NET       0x122
 164 #define OBD_FAIL_MDS_ALL_REQUEST_NET     0x123
 165 #define OBD_FAIL_MDS_SYNC_NET            0x124
 166 #define OBD_FAIL_MDS_SYNC_PACK           0x125
 167 #define OBD_FAIL_MDS_DONE_WRITING_NET    0x126
 168 #define OBD_FAIL_MDS_DONE_WRITING_PACK   0x127
 169 #define OBD_FAIL_MDS_ALLOC_OBDO          0x128
 170 #define OBD_FAIL_MDS_PAUSE_OPEN          0x129
 171 #define OBD_FAIL_MDS_STATFS_LCW_SLEEP    0x12a
 172 #define OBD_FAIL_MDS_OPEN_CREATE         0x12b
 173 #define OBD_FAIL_MDS_OST_SETATTR         0x12c
 174 #define OBD_FAIL_MDS_QUOTACHECK_NET      0x12d
 175 #define OBD_FAIL_MDS_QUOTACTL_NET        0x12e
 176 #define OBD_FAIL_MDS_CLIENT_ADD          0x12f
 177 #define OBD_FAIL_MDS_GETXATTR_NET        0x130
 178 #define OBD_FAIL_MDS_GETXATTR_PACK       0x131
 179 #define OBD_FAIL_MDS_SETXATTR_NET        0x132
 180 #define OBD_FAIL_MDS_SETXATTR            0x133
 181 #define OBD_FAIL_MDS_SETXATTR_WRITE      0x134
 182 #define OBD_FAIL_MDS_FS_SETUP            0x135
 183 #define OBD_FAIL_MDS_RESEND              0x136
 184 #define OBD_FAIL_MDS_IS_SUBDIR_NET       0x137
 185 #define OBD_FAIL_MDS_IS_SUBDIR_PACK      0x138
 186 #define OBD_FAIL_MDS_SET_INFO_NET        0x139
 187 #define OBD_FAIL_MDS_WRITEPAGE_NET       0x13a
 188 #define OBD_FAIL_MDS_WRITEPAGE_PACK      0x13b
 189 #define OBD_FAIL_MDS_LLOG_CREATE_FAILED  0x13c
 190 #define OBD_FAIL_MDS_OSC_PRECREATE       0x13d
 191 #define OBD_FAIL_MDS_LOV_SYNC_RACE       0x13e
 192 #define OBD_FAIL_MDS_CLOSE_NET_REP       0x13f
 193 #define OBD_FAIL_MDS_LLOG_SYNC_TIMEOUT   0x140
 194 #define OBD_FAIL_MDS_RECOVERY_ACCEPTS_GAPS 0x141
 195 #define OBD_FAIL_MDS_BLOCK_QUOTA_REQ     0x142
 196 #define OBD_FAIL_MDS_DROP_QUOTA_REQ      0x143
 197
 198 #define OBD_FAIL_OST                     0x200
 199 #define OBD_FAIL_OST_CONNECT_NET         0x201
 200 #define OBD_FAIL_OST_DISCONNECT_NET      0x202
 201 #define OBD_FAIL_OST_GET_INFO_NET        0x203
 202 #define OBD_FAIL_OST_CREATE_NET          0x204
 203 #define OBD_FAIL_OST_DESTROY_NET         0x205
 204 #define OBD_FAIL_OST_GETATTR_NET         0x206
 205 #define OBD_FAIL_OST_SETATTR_NET         0x207
 206 #define OBD_FAIL_OST_OPEN_NET            0x208
 207 #define OBD_FAIL_OST_CLOSE_NET           0x209
 208 #define OBD_FAIL_OST_BRW_NET             0x20a
 209 #define OBD_FAIL_OST_PUNCH_NET           0x20b
 210 #define OBD_FAIL_OST_STATFS_NET          0x20c
 211 #define OBD_FAIL_OST_HANDLE_UNPACK       0x20d
 212 #define OBD_FAIL_OST_BRW_WRITE_BULK      0x20e
 213 #define OBD_FAIL_OST_BRW_READ_BULK       0x20f
 214 #define OBD_FAIL_OST_SYNC_NET            0x210
 215 #define OBD_FAIL_OST_ALL_REPLY_NET       0x211
 216 #define OBD_FAIL_OST_ALL_REQUEST_NET     0x212
 217 #define OBD_FAIL_OST_LDLM_REPLY_NET      0x213
 218 #define OBD_FAIL_OST_BRW_PAUSE_BULK      0x214
 219 #define OBD_FAIL_OST_ENOSPC              0x215
 220 #define OBD_FAIL_OST_EROFS               0x216
 221 #define OBD_FAIL_OST_ENOENT              0x217
 222 #define OBD_FAIL_OST_QUOTACHECK_NET      0x218
 223 #define OBD_FAIL_OST_QUOTACTL_NET        0x219
 224 #define OBD_FAIL_OST_CHECKSUM_RECEIVE    0x21a
 225 #define OBD_FAIL_OST_CHECKSUM_SEND       0x21b
 226 #define OBD_FAIL_OST_BRW_SIZE            0x21c
 227 #define OBD_FAIL_OST_DROP_REQ            0x21d
 228 #define OBD_FAIL_OST_SETATTR_CREDITS     0x21e
 229 #define OBD_FAIL_OST_HOLD_WRITE_RPC      0x21f
 230 #define OBD_FAIL_OST_BRW_WRITE_BULK2     0x220
 231 #define OBD_FAIL_OST_LLOG_RECOVERY_TIMEOUT 0x221
 232 #define OBD_FAIL_OST_CANCEL_COOKIE_TIMEOUT 0x222
 233 #define OBD_FAIL_OST_PAUSE_CREATE        0x223
 234 #define OBD_FAIL_OST_BRW_PAUSE_PACK      0x224
 235 #define OBD_FAIL_OST_CONNECT_NET2        0x225
 236 #define OBD_FAIL_OST_NOMEM               0x226
 237
 238 #define OBD_FAIL_LDLM                    0x300
 239 #define OBD_FAIL_LDLM_NAMESPACE_NEW      0x301
 240 #define OBD_FAIL_LDLM_ENQUEUE            0x302
 241 #define OBD_FAIL_LDLM_CONVERT            0x303
 242 #define OBD_FAIL_LDLM_CANCEL             0x304
 243 #define OBD_FAIL_LDLM_BL_CALLBACK        0x305
 244 #define OBD_FAIL_LDLM_CP_CALLBACK        0x306
 245 #define OBD_FAIL_LDLM_GL_CALLBACK        0x307
 246 #define OBD_FAIL_LDLM_ENQUEUE_EXTENT_ERR 0x308
 247 #define OBD_FAIL_LDLM_ENQUEUE_INTENT_ERR 0x309
 248 #define OBD_FAIL_LDLM_CREATE_RESOURCE    0x30a
 249 #define OBD_FAIL_LDLM_ENQUEUE_BLOCKED    0x30b
 250 #define OBD_FAIL_LDLM_REPLY              0x30c
 251 #define OBD_FAIL_LDLM_RECOV_CLIENTS      0x30d
 252 #define OBD_FAIL_LDLM_ENQUEUE_OLD_EXPORT 0x30e
 253 #define OBD_FAIL_LDLM_GLIMPSE            0x30f
 254 #define OBD_FAIL_LDLM_CANCEL_RACE        0x310
 255 #define OBD_FAIL_LDLM_CANCEL_EVICT_RACE  0x311
 256 #define OBD_FAIL_LDLM_PAUSE_CANCEL       0x312
 257 #define OBD_FAIL_LDLM_CLOSE_THREAD       0x313
 258 #define OBD_FAIL_LDLM_CANCEL_BL_CB_RACE  0x314
 259 #define OBD_FAIL_LDLM_CP_CB_WAIT         0x315
 260 #define OBD_FAIL_LDLM_OST_FAIL_RACE      0x316
 261
 262 /* LOCKLESS IO */
 263 #define OBD_FAIL_LDLM_SET_CONTENTION     0x315
 264
 265 #define OBD_FAIL_OSC                     0x400
 266 #define OBD_FAIL_OSC_BRW_READ_BULK       0x401
 267 #define OBD_FAIL_OSC_BRW_WRITE_BULK      0x402
 268 #define OBD_FAIL_OSC_LOCK_BL_AST         0x403
 269 #define OBD_FAIL_OSC_LOCK_CP_AST         0x404
 270 #define OBD_FAIL_OSC_MATCH               0x405
 271 #define OBD_FAIL_OSC_BRW_PREP_REQ        0x406
 272 #define OBD_FAIL_OSC_SHUTDOWN            0x407
 273 #define OBD_FAIL_OSC_CHECKSUM_RECEIVE    0x408
 274 #define OBD_FAIL_OSC_CHECKSUM_SEND       0x409
 275 #define OBD_FAIL_OSC_BRW_PREP_REQ2       0x40a
 276 #define OBD_FAIL_OSC_CONNECT_CKSUM       0x40b
 277 #define OBD_FAIL_OSC_CKSUM_ADLER_ONLY    0x40c
 278 #define OBD_FAIL_OSC_DIO_PAUSE           0x40d
 279 #define OBD_FAIL_OSC_OBJECT_CONTENTION   0x40e
 280
 281 #define OBD_FAIL_PTLRPC                  0x500
 282 #define OBD_FAIL_PTLRPC_ACK              0x501
 283 #define OBD_FAIL_PTLRPC_RQBD             0x502
 284 #define OBD_FAIL_PTLRPC_BULK_GET_NET     0x503
 285 #define OBD_FAIL_PTLRPC_BULK_PUT_NET     0x504
 286 #define OBD_FAIL_PTLRPC_DROP_RPC         0x505
 287 #define OBD_FAIL_PTLRPC_DELAY_SEND       0x506
 288 #define OBD_FAIL_PTLRPC_DELAY_RECOV      0x507
 289 #define OBD_FAIL_PTLRPC_CLIENT_BULK_CB   0x508
 290 #define OBD_FAIL_PTLRPC_PAUSE_REQ        0x50a
 291 #define OBD_FAIL_PTLRPC_PAUSE_REP        0x50c
 292
 293 #define OBD_FAIL_PTLRPC_DUMP_LOG         0x50e
 294 #define OBD_FAIL_PTLRPC_LONG_UNLINK      0x50f
 295 #define OBD_FAIL_PTLRPC_HPREQ_TIMEOUT    0x510
 296 #define OBD_FAIL_PTLRPC_HPREQ_NOTIMEOUT  0x511
 297
 298 #define OBD_FAIL_OBD_PING_NET            0x600
 299 #define OBD_FAIL_OBD_LOG_CANCEL_NET      0x601
 300 #define OBD_FAIL_OBD_LOGD_NET            0x602
 301 #define OBD_FAIL_OBD_QC_CALLBACK_NET     0x603
 302 #define OBD_FAIL_OBD_DQACQ               0x604
 303 #define OBD_FAIL_OBD_LLOG_SETUP          0x605
 304 #define OBD_FAIL_OBD_LOG_CANCEL_REP      0x606
 305
 306 #define OBD_FAIL_TGT_REPLY_NET           0x700
 307 #define OBD_FAIL_TGT_CONN_RACE           0x701
 308 #define OBD_FAIL_TGT_FORCE_RECONNECT     0x702
 309 #define OBD_FAIL_TGT_DELAY_CONNECT       0x703
 310 #define OBD_FAIL_TGT_DELAY_RECONNECT     0x704
 311 #define OBD_FAIL_TGT_DELAY_PRECREATE     0x705
 312 #define OBD_FAIL_TGT_TOOMANY_THREADS     0x706
 313 #define OBD_FAIL_TGT_REPLAY_DROP         0x707
 314
 315 #define OBD_FAIL_MDC_REVALIDATE_PAUSE    0x800
 316 #define OBD_FAIL_MDC_ENQUEUE_PAUSE       0x801
 317 #define OBD_FAIL_MDC_OLD_EXT_FLAGS       0x802
 318 #define OBD_FAIL_MDC_GETATTR_ENQUEUE     0x803
 319
 320 #define OBD_FAIL_MGS                     0x900
 321 #define OBD_FAIL_MGS_ALL_REQUEST_NET     0x901
 322 #define OBD_FAIL_MGS_ALL_REPLY_NET       0x902
 323 #define OBD_FAIL_MGC_PAUSE_PROCESS_LOG   0x903
 324 #define OBD_FAIL_MGS_PAUSE_REQ           0x904
 325 #define OBD_FAIL_MGS_PAUSE_TARGET_REG    0x905
 326
 327 #define OBD_FAIL_QUOTA_RET_QDATA         0xA02
 328
 329 #define OBD_FAIL_LPROC_REMOVE            0xB00
 330
 331 #define OBD_FAIL_GENERAL_ALLOC           0xC00
 332
 333 #define OBD_FAIL_SEQ                     0x1000
 334 #define OBD_FAIL_SEQ_QUERY_NET           0x1001
 335
 336 #define OBD_FAIL_FLD                     0x1100
 337 #define OBD_FAIL_FLD_QUERY_NET           0x1101
 338
 339 #define OBD_FAIL_SEC_CTX                 0x1200
 340 #define OBD_FAIL_SEC_CTX_INIT_NET        0x1201
 341 #define OBD_FAIL_SEC_CTX_INIT_CONT_NET   0x1202
 342 #define OBD_FAIL_SEC_CTX_FINI_NET        0x1203
 343 #define OBD_FAIL_SEC_CTX_HDL_PAUSE       0x1204
 344
 345 /* Failure injection control */
 346 #define OBD_FAIL_MASK_SYS    0x0000FF00
 347 #define OBD_FAIL_MASK_LOC   (0x000000FF | OBD_FAIL_MASK_SYS)
 348
 349 #define OBD_FAILED_BIT       30
 350 /* OBD_FAILED is 0x40000000 */
 351 #define OBD_FAILED          (1 << OBD_FAILED_BIT)
 352
 353 #define OBD_FAIL_ONCE_BIT    31
 354 /* OBD_FAIL_ONCE is 0x80000000 */
 355 #define OBD_FAIL_ONCE       (1 << OBD_FAIL_ONCE_BIT)
 356
 357 /* The following flags aren't made to be combined */
 358 #define OBD_FAIL_SKIP        0x20000000 /* skip N times then fail */
 359 #define OBD_FAIL_SOME        0x10000000 /* only fail N times */
 360 #define OBD_FAIL_RAND        0x08000000 /* fail 1/N of the times */
 361 #define OBD_FAIL_USR1        0x04000000 /* user flag */
 362
 363 #define OBD_FAIL_PRECHECK(id) (obd_fail_loc &&                                \
 364                               (obd_fail_loc & OBD_FAIL_MASK_LOC) ==           \
 365                               ((id) & OBD_FAIL_MASK_LOC))
 366
 367 static inline int obd_fail_check_set(__u32 id, __u32 value, int set)
 368 {
 369         int ret = 0;
 370         if (unlikely(OBD_FAIL_PRECHECK(id) &&
 371             (ret = __obd_fail_check_set(id, value, set)))) {
 372                 CERROR("*** obd_fail_loc=%x ***\n", id);
 373         }
 374         return ret;
 375 }
 376
 377 /* If id hit obd_fail_loc, return 1, otherwise return 0 */
 378 #define OBD_FAIL_CHECK(id) \
 379         obd_fail_check_set(id, 0, OBD_FAIL_LOC_NOSET)
 380
 381 /* If id hit obd_fail_loc, obd_fail_loc |= value and return 1,
 382  * otherwise return 0 */
 383 #define OBD_FAIL_CHECK_ORSET(id, value) \
 384         obd_fail_check_set(id, value, OBD_FAIL_LOC_ORSET)
 385
 386 /* If id hit obd_fail_loc, obd_fail_loc = value and return 1,
 387  * otherwise return 0 */
 388 #define OBD_FAIL_CHECK_RESET(id, value) \
 389         obd_fail_check_set(id, value, OBD_FAIL_LOC_RESET)
 390
 391
 392 static inline int obd_fail_timeout_set(__u32 id, __u32 value, int ms, int set)
 393 {
 394         if (unlikely(OBD_FAIL_PRECHECK(id)))
 395                 return __obd_fail_timeout_set(id, value, ms, set);
 396         else
 397                 return 0;
 398 }
 399
 400 /* If id hit obd_fail_loc, sleep for seconds or milliseconds */
 401 #define OBD_FAIL_TIMEOUT(id, secs) \
 402         obd_fail_timeout_set(id, 0, secs * 1000, OBD_FAIL_LOC_NOSET)
 403
 404 #define OBD_FAIL_TIMEOUT_MS(id, ms) \
 405         obd_fail_timeout_set(id, 0, ms, OBD_FAIL_LOC_NOSET)
 406
 407 /* If id hit obd_fail_loc, obd_fail_loc |= value and
 408  * sleep seconds or milliseconds */
 409 #define OBD_FAIL_TIMEOUT_ORSET(id, value, secs) \
 410         obd_fail_timeout_set(id, value, secs * 1000, OBD_FAIL_LOC_ORSET)
 411
 412 #define OBD_FAIL_TIMEOUT_MS_ORSET(id, value, ms) \
 413         obd_fail_timeout_set(id, value, ms, OBD_FAIL_LOC_ORSET)
 414
 415 #ifdef __KERNEL__
 416 static inline void obd_fail_write(int id, struct super_block *sb)
 417 {
 418         /* We set FAIL_ONCE because we never "un-fail" a device */
 419         if (OBD_FAIL_CHECK_ORSET(id & ~OBD_FAIL_ONCE, OBD_FAIL_ONCE)) {
 420 #ifdef LIBCFS_DEBUG
 421                 BDEVNAME_DECLARE_STORAGE(tmp);
 422                 CERROR("obd_fail_loc=%x, fail write operation on %s\n",
 423                        id, ll_bdevname(sb, tmp));
 424 #endif
 425                 /* TODO-CMD: fix getting jdev */
 426                 __lvfs_set_rdonly(lvfs_sbdev(sb), (lvfs_sbdev_type)0);
 427         }
 428 }
 429 #define OBD_FAIL_WRITE(id, sb) obd_fail_write(id, sb)
 430
 431 /* The idea here is to synchronise two threads to force a race. The
 432  * first thread that calls this with a matching fail_loc is put to
 433  * sleep. The next thread that calls with the same fail_loc wakes up
 434  * the first and continues. */
 435 static inline void obd_race(__u32 id)
 436 {
 437         if (OBD_FAIL_PRECHECK(id)) {
 438                 if (unlikely(__obd_fail_check_set(id, 0, OBD_FAIL_LOC_NOSET))) {
 439                         obd_race_state = 0;
 440                         CERROR("obd_race id %x sleeping\n", id);
 441                         OBD_SLEEP_ON(obd_race_waitq, obd_race_state != 0);
 442                         CERROR("obd_fail_race id %x awake\n", id);
 443                 } else {
 444                         CERROR("obd_fail_race id %x waking\n", id);
 445                         obd_race_state = 1;
 446                         wake_up(&obd_race_waitq);
 447                 }
 448         }
 449 }
 450 #define OBD_RACE(id) obd_race(id)
 451 #else
 452 /* sigh.  an expedient fix until OBD_RACE is fixed up */
 453 #define OBD_RACE(foo) do {} while(0)
 454 #endif
 455
 456 #define fixme() CDEBUG(D_OTHER, "FIXME\n");
 457
 458 extern atomic_t libcfs_kmemory;
 459
 460 #ifdef LPROCFS
 461 #define obd_memory_add(size)                                                  \
 462         lprocfs_counter_add(obd_memory, OBD_MEMORY_STAT, (long)(size))
 463 #define obd_memory_sub(size)                                                  \
 464         lprocfs_counter_sub(obd_memory, OBD_MEMORY_STAT, (long)(size))
 465 #define obd_memory_sum()                                                      \
 466         lprocfs_stats_collector(obd_memory, OBD_MEMORY_STAT,                  \
 467                                 LPROCFS_FIELDS_FLAGS_SUM)
 468 #define obd_pages_add(order)                                                  \
 469         lprocfs_counter_add(obd_memory, OBD_MEMORY_PAGES_STAT,                \
 470                             (long)(1 << (order)))
 471 #define obd_pages_sub(order)                                                  \
 472         lprocfs_counter_sub(obd_memory, OBD_MEMORY_PAGES_STAT,                \
 473                             (long)(1 << (order)))
 474 #define obd_pages_sum()                                                       \
 475         lprocfs_stats_collector(obd_memory, OBD_MEMORY_PAGES_STAT,            \
 476                                 LPROCFS_FIELDS_FLAGS_SUM)
 477
 478 extern void obd_update_maxusage(void);
 479 extern __u64 obd_memory_max(void);
 480 extern __u64 obd_pages_max(void);
 481
 482 #else
 483
 484 extern __u64 obd_alloc;
 485 extern __u64 obd_pages;
 486
 487 extern __u64 obd_max_alloc;
 488 extern __u64 obd_max_pages;
 489
 490 static inline void obd_memory_add(long size)
 491 {
 492         obd_alloc += size;
 493         if (obd_alloc > obd_max_alloc)
 494                 obd_max_alloc = obd_alloc;
 495 }
 496
 497 static inline void obd_memory_sub(long size)
 498 {
 499         obd_alloc -= size;
 500 }
 501
 502 static inline void obd_pages_add(int order)
 503 {
 504         obd_pages += 1<< order;
 505         if (obd_pages > obd_max_pages)
 506                 obd_max_pages = obd_pages;
 507 }
 508
 509 static inline void obd_pages_sub(int order)
 510 {
 511         obd_pages -= 1<< order;
 512 }
 513
 514 #define obd_memory_sum() (obd_alloc)
 515 #define obd_pages_sum()  (obd_pages)
 516
 517 #define obd_memory_max() (obd_max_alloc)
 518 #define obd_pages_max() (obd_max_pages)
 519
 520 #endif
 521
 522 #define OBD_DEBUG_MEMUSAGE (1)
 523
 524 #if OBD_DEBUG_MEMUSAGE
 525 #define OBD_ALLOC_POST(ptr, size, name)                                 \
 526                 obd_memory_add(size);                                   \
 527                 CDEBUG(D_MALLOC, name " '" #ptr "': %d at %p.\n",       \
 528                        (int)(size), ptr)
 529
 530 #define OBD_FREE_PRE(ptr, size, name)                                   \
 531         LASSERT(ptr);                                                   \
 532         obd_memory_sub(size);                                           \
 533         CDEBUG(D_MALLOC, name " '" #ptr "': %d at %p.\n",               \
 534                (int)(size), ptr);                                       \
 535         POISON(ptr, 0x5a, size)
 536
 537 #else /* !OBD_DEBUG_MEMUSAGE */
 538
 539 #define OBD_ALLOC_POST(ptr, size, name) ((void)0)
 540 #define OBD_FREE_PRE(ptr, size, name)   ((void)0)
 541
 542 #endif /* !OBD_DEBUG_MEMUSAGE */
 543
 544 #ifdef RANDOM_FAIL_ALLOC
 545 #define HAS_FAIL_ALLOC_FLAG OBD_FAIL_CHECK(OBD_FAIL_GENERAL_ALLOC)
 546 #else
 547 #define HAS_FAIL_ALLOC_FLAG 0
 548 #endif
 549
 550 #define OBD_ALLOC_FAIL_BITS 24
 551 #define OBD_ALLOC_FAIL_MASK ((1 << OBD_ALLOC_FAIL_BITS) - 1)
 552 #define OBD_ALLOC_FAIL_MULT (OBD_ALLOC_FAIL_MASK / 100)
 553
 554 #if defined(LUSTRE_UTILS) /* this version is for utils only */
 555 #define OBD_ALLOC_GFP(ptr, size, gfp_mask)                                    \
 556 do {                                                                          \
 557         (ptr) = cfs_alloc(size, (gfp_mask));                                  \
 558         if (unlikely((ptr) == NULL)) {                                        \
 559                 CERROR("kmalloc of '" #ptr "' (%d bytes) failed at %s:%d\n",  \
 560                        (int)(size), __FILE__, __LINE__);                      \
 561         } else {                                                              \
 562                 memset(ptr, 0, size);                                         \
 563                 CDEBUG(D_MALLOC, "kmalloced '" #ptr "': %d at %p\n",          \
 564                        (int)(size), ptr);                                     \
 565         }                                                                     \
 566 } while (0)
 567 #else /* this version is for the kernel and liblustre */
 568 #define OBD_FREE_RTN0(ptr)                                                    \
 569 ({                                                                            \
 570         cfs_free(ptr);                                                        \
 571         (ptr) = NULL;                                                         \
 572         0;                                                                    \
 573 })
 574 #define OBD_ALLOC_GFP(ptr, size, gfp_mask)                                    \
 575 do {                                                                          \
 576         (ptr) = cfs_alloc(size, (gfp_mask));                                  \
 577         if (likely((ptr) != NULL &&                                           \
 578                    (!HAS_FAIL_ALLOC_FLAG || obd_alloc_fail_rate == 0 ||       \
 579                     !obd_alloc_fail(ptr, #ptr, "km", size,                    \
 580                                     __FILE__, __LINE__) ||                    \
 581                     OBD_FREE_RTN0(ptr)))){                                    \
 582                 memset(ptr, 0, size);                                         \
 583                 OBD_ALLOC_POST(ptr, size, "kmalloced");                       \
 584         }                                                                     \
 585 } while (0)
 586 #endif
 587
 588 #ifndef OBD_ALLOC_MASK
 589 # define OBD_ALLOC_MASK CFS_ALLOC_IO
 590 #endif
 591
 592 #define OBD_ALLOC(ptr, size) OBD_ALLOC_GFP(ptr, size, OBD_ALLOC_MASK)
 593 #define OBD_ALLOC_WAIT(ptr, size) OBD_ALLOC_GFP(ptr, size, CFS_ALLOC_STD)
 594 #define OBD_ALLOC_PTR(ptr) OBD_ALLOC(ptr, sizeof *(ptr))
 595 #define OBD_ALLOC_PTR_WAIT(ptr) OBD_ALLOC_WAIT(ptr, sizeof *(ptr))
 596
 597 #ifdef __arch_um__
 598 # define OBD_VMALLOC(ptr, size) OBD_ALLOC(ptr, size)
 599 #else
 600 # define OBD_VMALLOC(ptr, size)                                               \
 601 do {                                                                          \
 602         (ptr) = cfs_alloc_large(size);                                        \
 603         if (unlikely((ptr) == NULL)) {                                        \
 604                 CERROR("vmalloc of '" #ptr "' (%d bytes) failed\n",           \
 605                        (int)(size));                                          \
 606                 CERROR(LPU64" total bytes allocated by Lustre, %d by LNET\n", \
 607                        obd_memory_sum(), atomic_read(&libcfs_kmemory));       \
 608         } else {                                                              \
 609                 memset(ptr, 0, size);                                         \
 610                 OBD_ALLOC_POST(ptr, size, "vmalloced");                       \
 611         }                                                                     \
 612 } while(0)
 613 #endif
 614
 615 #ifdef CONFIG_DEBUG_SLAB
 616 #define POISON(ptr, c, s) do {} while (0)
 617 #define POISON_PTR(ptr)  ((void)0)
 618 #else
 619 #define POISON(ptr, c, s) memset(ptr, c, s)
 620 #define POISON_PTR(ptr)  (ptr) = (void *)0xdeadbeef
 621 #endif
 622
 623 #ifdef POISON_BULK
 624 #define POISON_PAGE(page, val) do { memset(kmap(page), val, CFS_PAGE_SIZE);   \
 625                                     kunmap(page); } while (0)
 626 #else
 627 #define POISON_PAGE(page, val) do { } while (0)
 628 #endif
 629
 630 #ifdef __KERNEL__
 631 #define OBD_FREE(ptr, size)                                                   \
 632 do {                                                                          \
 633         OBD_FREE_PRE(ptr, size, "kfreed");                                    \
 634         cfs_free(ptr);                                                        \
 635         POISON_PTR(ptr);                                                      \
 636 } while(0)
 637
 638
 639 #ifdef HAVE_RCU
 640 # ifdef HAVE_CALL_RCU_PARAM
 641 #  define my_call_rcu(rcu, cb)            call_rcu(rcu, cb, rcu)
 642 # else
 643 #  define my_call_rcu(rcu, cb)            call_rcu(rcu, cb)
 644 # endif
 645 #else
 646 # define my_call_rcu(rcu, cb)             (cb)(rcu)
 647 #endif
 648
 649 #define OBD_FREE_RCU_CB(ptr, size, handle, free_cb)                           \
 650 do {                                                                          \
 651         struct portals_handle *__h = (handle);                                \
 652         LASSERT(handle);                                                      \
 653         __h->h_ptr = (ptr);                                                   \
 654         __h->h_size = (size);                                                 \
 655         __h->h_free_cb = (void (*)(void *, size_t))(free_cb);                 \
 656         my_call_rcu(&__h->h_rcu, class_handle_free_cb);                       \
 657         POISON_PTR(ptr);                                                      \
 658 } while(0)
 659 #define OBD_FREE_RCU(ptr, size, handle) OBD_FREE_RCU_CB(ptr, size, handle, NULL)
 660
 661 #else
 662 #define OBD_FREE(ptr, size) ((void)(size), free((ptr)))
 663 #define OBD_FREE_RCU(ptr, size, handle) (OBD_FREE(ptr, size))
 664 #define OBD_FREE_RCU_CB(ptr, size, handle, cb)     ((*(cb))(ptr, size))
 665 #endif /* ifdef __KERNEL__ */
 666
 667 #ifdef __arch_um__
 668 # define OBD_VFREE(ptr, size) OBD_FREE(ptr, size)
 669 #else
 670 # define OBD_VFREE(ptr, size)                                                 \
 671 do {                                                                          \
 672         OBD_FREE_PRE(ptr, size, "vfreed");                                    \
 673         cfs_free_large(ptr);                                                  \
 674         POISON_PTR(ptr);                                                      \
 675 } while(0)
 676 #endif
 677
 678 /* we memset() the slab object to 0 when allocation succeeds, so DO NOT
 679  * HAVE A CTOR THAT DOES ANYTHING.  its work will be cleared here.  we'd
 680  * love to assert on that, but slab.c keeps kmem_cache_s all to itself. */
 681 #define OBD_SLAB_FREE_RTN0(ptr, slab)                                         \
 682 ({                                                                            \
 683         cfs_mem_cache_free((slab), (ptr));                                    \
 684         (ptr) = NULL;                                                         \
 685         0;                                                                    \
 686 })
 687 #define OBD_SLAB_ALLOC(ptr, slab, type, size)                                 \
 688 do {                                                                          \
 689         LASSERT(!in_interrupt());                                             \
 690         (ptr) = cfs_mem_cache_alloc(slab, (type));                            \
 691         if (likely((ptr) != NULL &&                                           \
 692                    (!HAS_FAIL_ALLOC_FLAG || obd_alloc_fail_rate == 0 ||       \
 693                     !obd_alloc_fail(ptr, #ptr, "slab-", size,                 \
 694                                     __FILE__, __LINE__) ||                    \
 695                     OBD_SLAB_FREE_RTN0(ptr, slab)))) {                        \
 696                 memset(ptr, 0, size);                                         \
 697                 OBD_ALLOC_POST(ptr, size, "slab-alloced");                    \
 698         }                                                                     \
 699 } while(0)
 700
 701 #define OBD_FREE_PTR(ptr) OBD_FREE(ptr, sizeof *(ptr))
 702
 703 #define OBD_SLAB_FREE(ptr, slab, size)                                        \
 704 do {                                                                          \
 705         OBD_FREE_PRE(ptr, size, "slab-freed");                                \
 706         cfs_mem_cache_free(slab, ptr);                                        \
 707         POISON_PTR(ptr);                                                      \
 708 } while(0)
 709
 710 #define OBD_SLAB_ALLOC_PTR(ptr, slab)                                         \
 711         OBD_SLAB_ALLOC((ptr), (slab), CFS_ALLOC_STD, sizeof *(ptr))
 712 #define OBD_SLAB_FREE_PTR(ptr, slab)                                          \
 713         OBD_SLAB_FREE((ptr), (slab), sizeof *(ptr))
 714
 715 #define KEY_IS(str) \
 716         (keylen >= (sizeof(str)-1) && memcmp(key, str, (sizeof(str)-1)) == 0)
 717
 718 /* Wrapper for contiguous page frame allocation */
 719 #define OBD_PAGES_ALLOC(ptr, order, gfp_mask)                                 \
 720 do {                                                                          \
 721         (ptr) = cfs_alloc_pages(gfp_mask, order);                             \
 722         if (unlikely((ptr) == NULL)) {                                        \
 723                 CERROR("alloc_pages of '" #ptr "' %d page(s) / "LPU64" bytes "\
 724                        "failed\n", (int)(1 << (order)),                       \
 725                        (__u64)((1 << (order)) << CFS_PAGE_SHIFT));            \
 726                 CERROR(LPU64" total bytes and "LPU64" total pages "           \
 727                        "("LPU64" bytes) allocated by Lustre, "                \
 728                        "%d total bytes by LNET\n",                            \
 729                        obd_memory_sum(),                                      \
 730                        obd_pages_sum() << CFS_PAGE_SHIFT,                     \
 731                        obd_pages_sum(),                                       \
 732                        atomic_read(&libcfs_kmemory));                         \
 733         } else {                                                              \
 734                 obd_pages_add(order);                                         \
 735                 CDEBUG(D_MALLOC, "alloc_pages '" #ptr "': %d page(s) / "      \
 736                        LPU64" bytes at %p.\n",                                \
 737                        (int)(1 << (order)),                                   \
 738                        (__u64)((1 << (order)) << CFS_PAGE_SHIFT), ptr);       \
 739         }                                                                     \
 740 } while (0)
 741
 742 #define OBD_PAGE_ALLOC(ptr, gfp_mask)                                         \
 743         OBD_PAGES_ALLOC(ptr, 0, gfp_mask)
 744
 745 #define OBD_PAGES_FREE(ptr, order)                                            \
 746 do {                                                                          \
 747         LASSERT(ptr);                                                         \
 748         obd_pages_sub(order);                                                 \
 749         CDEBUG(D_MALLOC, "free_pages '" #ptr "': %d page(s) / "LPU64" bytes " \
 750                "at %p.\n",                                                    \
 751                (int)(1 << (order)), (__u64)((1 << (order)) << CFS_PAGE_SHIFT),\
 752                ptr);                                                          \
 753         __cfs_free_pages(ptr, order);                                         \
 754         (ptr) = (void *)0xdeadbeef;                                           \
 755 } while (0)
 756
 757 #define OBD_PAGE_FREE(ptr) OBD_PAGES_FREE(ptr, 0)
 758
 759 #endif