lustre/include/obd_support.h

   1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
   2  * vim:expandtab:shiftwidth=8:tabstop=8:
   3  *
   4  * GPL HEADER START
   5  *
   6  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License version 2 only,
  10  * as published by the Free Software Foundation.
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  12  * This program is distributed in the hope that it will be useful, but
  13  * WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * General Public License version 2 for more details (a copy is included
  16  * in the LICENSE file that accompanied this code).
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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 /* The max delay between connects is SWITCH_MAX + SWITCH_INC + INITIAL */
 127 #define RECONNECT_DELAY_MAX (CONNECTION_SWITCH_MAX + CONNECTION_SWITCH_INC + \
 128                              INITIAL_CONNECT_TIMEOUT)
 129 #define LONG_UNLINK 300          /* Unlink should happen before now */
 130
 131 /**
 132  * Time interval of shrink, if the client is "idle" more than this interval,
 133  * then the ll_grant thread will return the requested grant space to filter
 134  */
 135 #define GRANT_SHRINK_INTERVAL             360/*6 minutes*/
 136
 137
 138 #define OBD_FAIL_MDS                     0x100
 139 #define OBD_FAIL_MDS_HANDLE_UNPACK       0x101
 140 #define OBD_FAIL_MDS_GETATTR_NET         0x102
 141 #define OBD_FAIL_MDS_GETATTR_PACK        0x103
 142 #define OBD_FAIL_MDS_READPAGE_NET        0x104
 143 #define OBD_FAIL_MDS_READPAGE_PACK       0x105
 144 #define OBD_FAIL_MDS_SENDPAGE            0x106
 145 #define OBD_FAIL_MDS_REINT_NET           0x107
 146 #define OBD_FAIL_MDS_REINT_UNPACK        0x108
 147 #define OBD_FAIL_MDS_REINT_SETATTR       0x109
 148 #define OBD_FAIL_MDS_REINT_SETATTR_WRITE 0x10a
 149 #define OBD_FAIL_MDS_REINT_CREATE        0x10b
 150 #define OBD_FAIL_MDS_REINT_CREATE_WRITE  0x10c
 151 #define OBD_FAIL_MDS_REINT_UNLINK        0x10d
 152 #define OBD_FAIL_MDS_REINT_UNLINK_WRITE  0x10e
 153 #define OBD_FAIL_MDS_REINT_LINK          0x10f
 154 #define OBD_FAIL_MDS_REINT_LINK_WRITE    0x110
 155 #define OBD_FAIL_MDS_REINT_RENAME        0x111
 156 #define OBD_FAIL_MDS_REINT_RENAME_WRITE  0x112
 157 #define OBD_FAIL_MDS_OPEN_NET            0x113
 158 #define OBD_FAIL_MDS_OPEN_PACK           0x114
 159 #define OBD_FAIL_MDS_CLOSE_NET           0x115
 160 #define OBD_FAIL_MDS_CLOSE_PACK          0x116
 161 #define OBD_FAIL_MDS_CONNECT_NET         0x117
 162 #define OBD_FAIL_MDS_CONNECT_PACK        0x118
 163 #define OBD_FAIL_MDS_REINT_NET_REP       0x119
 164 #define OBD_FAIL_MDS_DISCONNECT_NET      0x11a
 165 #define OBD_FAIL_MDS_GETSTATUS_NET       0x11b
 166 #define OBD_FAIL_MDS_GETSTATUS_PACK      0x11c
 167 #define OBD_FAIL_MDS_STATFS_PACK         0x11d
 168 #define OBD_FAIL_MDS_STATFS_NET          0x11e
 169 #define OBD_FAIL_MDS_GETATTR_NAME_NET    0x11f
 170 #define OBD_FAIL_MDS_PIN_NET             0x120
 171 #define OBD_FAIL_MDS_UNPIN_NET           0x121
 172 #define OBD_FAIL_MDS_ALL_REPLY_NET       0x122
 173 #define OBD_FAIL_MDS_ALL_REQUEST_NET     0x123
 174 #define OBD_FAIL_MDS_SYNC_NET            0x124
 175 #define OBD_FAIL_MDS_SYNC_PACK           0x125
 176 #define OBD_FAIL_MDS_DONE_WRITING_NET    0x126
 177 #define OBD_FAIL_MDS_DONE_WRITING_PACK   0x127
 178 #define OBD_FAIL_MDS_ALLOC_OBDO          0x128
 179 #define OBD_FAIL_MDS_PAUSE_OPEN          0x129
 180 #define OBD_FAIL_MDS_STATFS_LCW_SLEEP    0x12a
 181 #define OBD_FAIL_MDS_OPEN_CREATE         0x12b
 182 #define OBD_FAIL_MDS_OST_SETATTR         0x12c
 183 #define OBD_FAIL_MDS_QUOTACHECK_NET      0x12d
 184 #define OBD_FAIL_MDS_QUOTACTL_NET        0x12e
 185 #define OBD_FAIL_MDS_CLIENT_ADD          0x12f
 186 #define OBD_FAIL_MDS_GETXATTR_NET        0x130
 187 #define OBD_FAIL_MDS_GETXATTR_PACK       0x131
 188 #define OBD_FAIL_MDS_SETXATTR_NET        0x132
 189 #define OBD_FAIL_MDS_SETXATTR            0x133
 190 #define OBD_FAIL_MDS_SETXATTR_WRITE      0x134
 191 #define OBD_FAIL_MDS_FS_SETUP            0x135
 192 #define OBD_FAIL_MDS_RESEND              0x136
 193 #define OBD_FAIL_MDS_LLOG_CREATE_FAILED  0x137
 194 #define OBD_FAIL_MDS_LOV_SYNC_RACE       0x138
 195 #define OBD_FAIL_MDS_OSC_PRECREATE       0x139
 196 #define OBD_FAIL_MDS_LLOG_SYNC_TIMEOUT   0x13a
 197 #define OBD_FAIL_MDS_CLOSE_NET_REP       0x13b
 198 #define OBD_FAIL_MDS_BLOCK_QUOTA_REQ     0x13c
 199 #define OBD_FAIL_MDS_DROP_QUOTA_REQ      0x13d
 200 #define OBD_FAIL_MDS_REMOVE_COMMON_EA    0x13e
 201 #define OBD_FAIL_MDS_ALLOW_COMMON_EA_SETTING   0x13f
 202 #define OBD_FAIL_MDS_LOV_PREP_CREATE     0x141
 203
 204 /* CMD */
 205 #define OBD_FAIL_MDS_IS_SUBDIR_NET       0x180
 206 #define OBD_FAIL_MDS_IS_SUBDIR_PACK      0x181
 207 #define OBD_FAIL_MDS_SET_INFO_NET        0x182
 208 #define OBD_FAIL_MDS_WRITEPAGE_NET       0x183
 209 #define OBD_FAIL_MDS_WRITEPAGE_PACK      0x184
 210 #define OBD_FAIL_MDS_RECOVERY_ACCEPTS_GAPS 0x185
 211 #define OBD_FAIL_MDS_GET_INFO_NET        0x186
 212
 213 #define OBD_FAIL_OST                     0x200
 214 #define OBD_FAIL_OST_CONNECT_NET         0x201
 215 #define OBD_FAIL_OST_DISCONNECT_NET      0x202
 216 #define OBD_FAIL_OST_GET_INFO_NET        0x203
 217 #define OBD_FAIL_OST_CREATE_NET          0x204
 218 #define OBD_FAIL_OST_DESTROY_NET         0x205
 219 #define OBD_FAIL_OST_GETATTR_NET         0x206
 220 #define OBD_FAIL_OST_SETATTR_NET         0x207
 221 #define OBD_FAIL_OST_OPEN_NET            0x208
 222 #define OBD_FAIL_OST_CLOSE_NET           0x209
 223 #define OBD_FAIL_OST_BRW_NET             0x20a
 224 #define OBD_FAIL_OST_PUNCH_NET           0x20b
 225 #define OBD_FAIL_OST_STATFS_NET          0x20c
 226 #define OBD_FAIL_OST_HANDLE_UNPACK       0x20d
 227 #define OBD_FAIL_OST_BRW_WRITE_BULK      0x20e
 228 #define OBD_FAIL_OST_BRW_READ_BULK       0x20f
 229 #define OBD_FAIL_OST_SYNC_NET            0x210
 230 #define OBD_FAIL_OST_ALL_REPLY_NET       0x211
 231 #define OBD_FAIL_OST_ALL_REQUEST_NET     0x212
 232 #define OBD_FAIL_OST_LDLM_REPLY_NET      0x213
 233 #define OBD_FAIL_OST_BRW_PAUSE_BULK      0x214
 234 #define OBD_FAIL_OST_ENOSPC              0x215
 235 #define OBD_FAIL_OST_EROFS               0x216
 236 #define OBD_FAIL_OST_ENOENT              0x217
 237 #define OBD_FAIL_OST_QUOTACHECK_NET      0x218
 238 #define OBD_FAIL_OST_QUOTACTL_NET        0x219
 239 #define OBD_FAIL_OST_CHECKSUM_RECEIVE    0x21a
 240 #define OBD_FAIL_OST_CHECKSUM_SEND       0x21b
 241 #define OBD_FAIL_OST_BRW_SIZE            0x21c
 242 #define OBD_FAIL_OST_DROP_REQ            0x21d
 243 #define OBD_FAIL_OST_SETATTR_CREDITS     0x21e
 244 #define OBD_FAIL_OST_HOLD_WRITE_RPC      0x21f
 245 #define OBD_FAIL_OST_BRW_WRITE_BULK2     0x220
 246 #define OBD_FAIL_OST_LLOG_RECOVERY_TIMEOUT 0x221
 247 #define OBD_FAIL_OST_CANCEL_COOKIE_TIMEOUT 0x222
 248 #define OBD_FAIL_OST_PAUSE_CREATE        0x223
 249 #define OBD_FAIL_OST_BRW_PAUSE_PACK      0x224
 250 #define OBD_FAIL_OST_CONNECT_NET2        0x225
 251 #define OBD_FAIL_OST_NOMEM               0x226
 252
 253 #define OBD_FAIL_LDLM                    0x300
 254 #define OBD_FAIL_LDLM_NAMESPACE_NEW      0x301
 255 #define OBD_FAIL_LDLM_ENQUEUE            0x302
 256 #define OBD_FAIL_LDLM_CONVERT            0x303
 257 #define OBD_FAIL_LDLM_CANCEL             0x304
 258 #define OBD_FAIL_LDLM_BL_CALLBACK        0x305
 259 #define OBD_FAIL_LDLM_CP_CALLBACK        0x306
 260 #define OBD_FAIL_LDLM_GL_CALLBACK        0x307
 261 #define OBD_FAIL_LDLM_ENQUEUE_EXTENT_ERR 0x308
 262 #define OBD_FAIL_LDLM_ENQUEUE_INTENT_ERR 0x309
 263 #define OBD_FAIL_LDLM_CREATE_RESOURCE    0x30a
 264 #define OBD_FAIL_LDLM_ENQUEUE_BLOCKED    0x30b
 265 #define OBD_FAIL_LDLM_REPLY              0x30c
 266 #define OBD_FAIL_LDLM_RECOV_CLIENTS      0x30d
 267 #define OBD_FAIL_LDLM_ENQUEUE_OLD_EXPORT 0x30e
 268 #define OBD_FAIL_LDLM_GLIMPSE            0x30f
 269 #define OBD_FAIL_LDLM_CANCEL_RACE        0x310
 270 #define OBD_FAIL_LDLM_CANCEL_EVICT_RACE  0x311
 271 #define OBD_FAIL_LDLM_PAUSE_CANCEL       0x312
 272 #define OBD_FAIL_LDLM_CLOSE_THREAD       0x313
 273 #define OBD_FAIL_LDLM_CANCEL_BL_CB_RACE  0x314
 274 #define OBD_FAIL_LDLM_CP_CB_WAIT         0x315
 275 #define OBD_FAIL_LDLM_OST_FAIL_RACE      0x316
 276 #define OBD_FAIL_LDLM_INTR_CP_AST        0x317
 277 #define OBD_FAIL_LDLM_CP_BL_RACE         0x318
 278
 279 /* LOCKLESS IO */
 280 #define OBD_FAIL_LDLM_SET_CONTENTION     0x385
 281
 282 #define OBD_FAIL_OSC                     0x400
 283 #define OBD_FAIL_OSC_BRW_READ_BULK       0x401
 284 #define OBD_FAIL_OSC_BRW_WRITE_BULK      0x402
 285 #define OBD_FAIL_OSC_LOCK_BL_AST         0x403
 286 #define OBD_FAIL_OSC_LOCK_CP_AST         0x404
 287 #define OBD_FAIL_OSC_MATCH               0x405
 288 #define OBD_FAIL_OSC_BRW_PREP_REQ        0x406
 289 #define OBD_FAIL_OSC_SHUTDOWN            0x407
 290 #define OBD_FAIL_OSC_CHECKSUM_RECEIVE    0x408
 291 #define OBD_FAIL_OSC_CHECKSUM_SEND       0x409
 292 #define OBD_FAIL_OSC_BRW_PREP_REQ2       0x40a
 293 #define OBD_FAIL_OSC_CONNECT_CKSUM       0x40b
 294 #define OBD_FAIL_OSC_CKSUM_ADLER_ONLY    0x40c
 295 #define OBD_FAIL_OSC_DIO_PAUSE           0x40d
 296 #define OBD_FAIL_OSC_OBJECT_CONTENTION   0x40e
 297 #define OBD_FAIL_OSC_CP_CANCEL_RACE      0x40f
 298
 299 #define OBD_FAIL_PTLRPC                  0x500
 300 #define OBD_FAIL_PTLRPC_ACK              0x501
 301 #define OBD_FAIL_PTLRPC_RQBD             0x502
 302 #define OBD_FAIL_PTLRPC_BULK_GET_NET     0x503
 303 #define OBD_FAIL_PTLRPC_BULK_PUT_NET     0x504
 304 #define OBD_FAIL_PTLRPC_DROP_RPC         0x505
 305 #define OBD_FAIL_PTLRPC_DELAY_SEND       0x506
 306 #define OBD_FAIL_PTLRPC_DELAY_RECOV      0x507
 307 #define OBD_FAIL_PTLRPC_CLIENT_BULK_CB   0x508
 308 #define OBD_FAIL_PTLRPC_PAUSE_REQ        0x50a
 309 #define OBD_FAIL_PTLRPC_PAUSE_REP        0x50c
 310 #define OBD_FAIL_PTLRPC_IMP_DEACTIVE     0x50d
 311
 312 #define OBD_FAIL_PTLRPC_DUMP_LOG         0x50e
 313 #define OBD_FAIL_PTLRPC_LONG_REPL_UNLINK 0x50f
 314 #define OBD_FAIL_PTLRPC_LONG_BULK_UNLINK 0x510
 315 #define OBD_FAIL_PTLRPC_HPREQ_TIMEOUT    0x511
 316 #define OBD_FAIL_PTLRPC_HPREQ_NOTIMEOUT  0x512
 317
 318 #define OBD_FAIL_OBD_PING_NET            0x600
 319 #define OBD_FAIL_OBD_LOG_CANCEL_NET      0x601
 320 #define OBD_FAIL_OBD_LOGD_NET            0x602
 321 #define OBD_FAIL_OBD_QC_CALLBACK_NET     0x603
 322 #define OBD_FAIL_OBD_DQACQ               0x604
 323 #define OBD_FAIL_OBD_LLOG_SETUP          0x605
 324 #define OBD_FAIL_OBD_LOG_CANCEL_REP      0x606
 325
 326 #define OBD_FAIL_TGT_REPLY_NET           0x700
 327 #define OBD_FAIL_TGT_CONN_RACE           0x701
 328 #define OBD_FAIL_TGT_FORCE_RECONNECT     0x702
 329 #define OBD_FAIL_TGT_DELAY_CONNECT       0x703
 330 #define OBD_FAIL_TGT_DELAY_RECONNECT     0x704
 331 #define OBD_FAIL_TGT_DELAY_PRECREATE     0x705
 332 #define OBD_FAIL_TGT_TOOMANY_THREADS     0x706
 333 #define OBD_FAIL_TGT_REPLAY_DROP         0x707
 334 #define OBD_FAIL_TGT_FAKE_EXP            0x708
 335 #define OBD_FAIL_TGT_REPLAY_DELAY        0x709
 336 #define OBD_FAIL_TGT_LAST_REPLAY         0x710
 337
 338 #define OBD_FAIL_MDC_REVALIDATE_PAUSE    0x800
 339 #define OBD_FAIL_MDC_ENQUEUE_PAUSE       0x801
 340 #define OBD_FAIL_MDC_OLD_EXT_FLAGS       0x802
 341 #define OBD_FAIL_MDC_GETATTR_ENQUEUE     0x803
 342
 343 #define OBD_FAIL_MGS                     0x900
 344 #define OBD_FAIL_MGS_ALL_REQUEST_NET     0x901
 345 #define OBD_FAIL_MGS_ALL_REPLY_NET       0x902
 346 #define OBD_FAIL_MGC_PAUSE_PROCESS_LOG   0x903
 347 #define OBD_FAIL_MGS_PAUSE_REQ           0x904
 348 #define OBD_FAIL_MGS_PAUSE_TARGET_REG    0x905
 349
 350 #define OBD_FAIL_QUOTA_RET_QDATA         0xA02
 351 #define OBD_FAIL_QUOTA_DELAY_REL         0xA03
 352
 353 #define OBD_FAIL_LPROC_REMOVE            0xB00
 354
 355 #define OBD_FAIL_GENERAL_ALLOC           0xC00
 356
 357 #define OBD_FAIL_SEQ                     0x1000
 358 #define OBD_FAIL_SEQ_QUERY_NET           0x1001
 359
 360 #define OBD_FAIL_FLD                     0x1100
 361 #define OBD_FAIL_FLD_QUERY_NET           0x1101
 362
 363 #define OBD_FAIL_SEC_CTX                 0x1200
 364 #define OBD_FAIL_SEC_CTX_INIT_NET        0x1201
 365 #define OBD_FAIL_SEC_CTX_INIT_CONT_NET   0x1202
 366 #define OBD_FAIL_SEC_CTX_FINI_NET        0x1203
 367 #define OBD_FAIL_SEC_CTX_HDL_PAUSE       0x1204
 368
 369 #define OBD_FAIL_LLOG                               0x1300
 370 #define OBD_FAIL_LLOG_ORIGIN_CONNECT_NET            0x1301
 371 #define OBD_FAIL_LLOG_ORIGIN_HANDLE_CREATE_NET      0x1302
 372 #define OBD_FAIL_LLOG_ORIGIN_HANDLE_DESTROY_NET     0x1303
 373 #define OBD_FAIL_LLOG_ORIGIN_HANDLE_READ_HEADER_NET 0x1304
 374 #define OBD_FAIL_LLOG_ORIGIN_HANDLE_NEXT_BLOCK_NET  0x1305
 375 #define OBD_FAIL_LLOG_ORIGIN_HANDLE_PREV_BLOCK_NET  0x1306
 376 #define OBD_FAIL_LLOG_ORIGIN_HANDLE_WRITE_REC_NET   0x1307
 377 #define OBD_FAIL_LLOG_ORIGIN_HANDLE_CLOSE_NET       0x1308
 378 #define OBD_FAIL_LLOG_CATINFO_NET                   0x1309
 379
 380
 381 /* Failure injection control */
 382 #define OBD_FAIL_MASK_SYS    0x0000FF00
 383 #define OBD_FAIL_MASK_LOC   (0x000000FF | OBD_FAIL_MASK_SYS)
 384
 385 #define OBD_FAILED_BIT       30
 386 /* OBD_FAILED is 0x40000000 */
 387 #define OBD_FAILED          (1 << OBD_FAILED_BIT)
 388
 389 #define OBD_FAIL_ONCE_BIT    31
 390 /* OBD_FAIL_ONCE is 0x80000000 */
 391 #define OBD_FAIL_ONCE       (1 << OBD_FAIL_ONCE_BIT)
 392
 393 /* The following flags aren't made to be combined */
 394 #define OBD_FAIL_SKIP        0x20000000 /* skip N times then fail */
 395 #define OBD_FAIL_SOME        0x10000000 /* only fail N times */
 396 #define OBD_FAIL_RAND        0x08000000 /* fail 1/N of the times */
 397 #define OBD_FAIL_USR1        0x04000000 /* user flag */
 398
 399 #define OBD_FAIL_PRECHECK(id) (obd_fail_loc &&                                \
 400                               (obd_fail_loc & OBD_FAIL_MASK_LOC) ==           \
 401                               ((id) & OBD_FAIL_MASK_LOC))
 402
 403 static inline int obd_fail_check_set(__u32 id, __u32 value, int set)
 404 {
 405         int ret = 0;
 406         if (unlikely(OBD_FAIL_PRECHECK(id) &&
 407             (ret = __obd_fail_check_set(id, value, set)))) {
 408                 CERROR("*** obd_fail_loc=%x ***\n", id);
 409         }
 410         return ret;
 411 }
 412
 413 /* If id hit obd_fail_loc, return 1, otherwise return 0 */
 414 #define OBD_FAIL_CHECK(id) \
 415         obd_fail_check_set(id, 0, OBD_FAIL_LOC_NOSET)
 416
 417 /* If id hit obd_fail_loc, obd_fail_loc |= value and return 1,
 418  * otherwise return 0 */
 419 #define OBD_FAIL_CHECK_ORSET(id, value) \
 420         obd_fail_check_set(id, value, OBD_FAIL_LOC_ORSET)
 421
 422 /* If id hit obd_fail_loc, obd_fail_loc = value and return 1,
 423  * otherwise return 0 */
 424 #define OBD_FAIL_CHECK_RESET(id, value) \
 425         obd_fail_check_set(id, value, OBD_FAIL_LOC_RESET)
 426
 427
 428 static inline int obd_fail_timeout_set(__u32 id, __u32 value, int ms, int set)
 429 {
 430         if (unlikely(OBD_FAIL_PRECHECK(id)))
 431                 return __obd_fail_timeout_set(id, value, ms, set);
 432         else
 433                 return 0;
 434 }
 435
 436 /* If id hit obd_fail_loc, sleep for seconds or milliseconds */
 437 #define OBD_FAIL_TIMEOUT(id, secs) \
 438         obd_fail_timeout_set(id, 0, secs * 1000, OBD_FAIL_LOC_NOSET)
 439
 440 #define OBD_FAIL_TIMEOUT_MS(id, ms) \
 441         obd_fail_timeout_set(id, 0, ms, OBD_FAIL_LOC_NOSET)
 442
 443 /* If id hit obd_fail_loc, obd_fail_loc |= value and
 444  * sleep seconds or milliseconds */
 445 #define OBD_FAIL_TIMEOUT_ORSET(id, value, secs) \
 446         obd_fail_timeout_set(id, value, secs * 1000, OBD_FAIL_LOC_ORSET)
 447
 448 #define OBD_FAIL_TIMEOUT_MS_ORSET(id, value, ms) \
 449         obd_fail_timeout_set(id, value, ms, OBD_FAIL_LOC_ORSET)
 450
 451 #ifdef __KERNEL__
 452 static inline void obd_fail_write(int id, struct super_block *sb)
 453 {
 454         /* We set FAIL_ONCE because we never "un-fail" a device */
 455         if (OBD_FAIL_CHECK_ORSET(id & ~OBD_FAIL_ONCE, OBD_FAIL_ONCE)) {
 456 #ifdef LIBCFS_DEBUG
 457                 BDEVNAME_DECLARE_STORAGE(tmp);
 458                 CERROR("obd_fail_loc=%x, fail write operation on %s\n",
 459                        id, ll_bdevname(sb, tmp));
 460 #endif
 461                 /* TODO-CMD: fix getting jdev */
 462                 __lvfs_set_rdonly(lvfs_sbdev(sb), (lvfs_sbdev_type)0);
 463         }
 464 }
 465 #define OBD_FAIL_WRITE(id, sb) obd_fail_write(id, sb)
 466
 467 /* The idea here is to synchronise two threads to force a race. The
 468  * first thread that calls this with a matching fail_loc is put to
 469  * sleep. The next thread that calls with the same fail_loc wakes up
 470  * the first and continues. */
 471 static inline void obd_race(__u32 id)
 472 {
 473         if (OBD_FAIL_PRECHECK(id)) {
 474                 if (unlikely(__obd_fail_check_set(id, 0, OBD_FAIL_LOC_NOSET))) {
 475                         obd_race_state = 0;
 476                         CERROR("obd_race id %x sleeping\n", id);
 477                         OBD_SLEEP_ON(obd_race_waitq, obd_race_state != 0);
 478                         CERROR("obd_fail_race id %x awake\n", id);
 479                 } else {
 480                         CERROR("obd_fail_race id %x waking\n", id);
 481                         obd_race_state = 1;
 482                         wake_up(&obd_race_waitq);
 483                 }
 484         }
 485 }
 486 #define OBD_RACE(id) obd_race(id)
 487 #else
 488 /* sigh.  an expedient fix until OBD_RACE is fixed up */
 489 #define OBD_RACE(foo) do {} while(0)
 490 #endif
 491
 492 #define fixme() CDEBUG(D_OTHER, "FIXME\n");
 493
 494 extern atomic_t libcfs_kmemory;
 495
 496 #ifdef LPROCFS
 497 #define obd_memory_add(size)                                                  \
 498         lprocfs_counter_add(obd_memory, OBD_MEMORY_STAT, (long)(size))
 499 #define obd_memory_sub(size)                                                  \
 500         lprocfs_counter_sub(obd_memory, OBD_MEMORY_STAT, (long)(size))
 501 #define obd_memory_sum()                                                      \
 502         lprocfs_stats_collector(obd_memory, OBD_MEMORY_STAT,                  \
 503                                 LPROCFS_FIELDS_FLAGS_SUM)
 504 #define obd_pages_add(order)                                                  \
 505         lprocfs_counter_add(obd_memory, OBD_MEMORY_PAGES_STAT,                \
 506                             (long)(1 << (order)))
 507 #define obd_pages_sub(order)                                                  \
 508         lprocfs_counter_sub(obd_memory, OBD_MEMORY_PAGES_STAT,                \
 509                             (long)(1 << (order)))
 510 #define obd_pages_sum()                                                       \
 511         lprocfs_stats_collector(obd_memory, OBD_MEMORY_PAGES_STAT,            \
 512                                 LPROCFS_FIELDS_FLAGS_SUM)
 513
 514 extern void obd_update_maxusage(void);
 515 extern __u64 obd_memory_max(void);
 516 extern __u64 obd_pages_max(void);
 517
 518 #else
 519
 520 extern __u64 obd_alloc;
 521 extern __u64 obd_pages;
 522
 523 extern __u64 obd_max_alloc;
 524 extern __u64 obd_max_pages;
 525
 526 static inline void obd_memory_add(long size)
 527 {
 528         obd_alloc += size;
 529         if (obd_alloc > obd_max_alloc)
 530                 obd_max_alloc = obd_alloc;
 531 }
 532
 533 static inline void obd_memory_sub(long size)
 534 {
 535         obd_alloc -= size;
 536 }
 537
 538 static inline void obd_pages_add(int order)
 539 {
 540         obd_pages += 1<< order;
 541         if (obd_pages > obd_max_pages)
 542                 obd_max_pages = obd_pages;
 543 }
 544
 545 static inline void obd_pages_sub(int order)
 546 {
 547         obd_pages -= 1<< order;
 548 }
 549
 550 #define obd_memory_sum() (obd_alloc)
 551 #define obd_pages_sum()  (obd_pages)
 552
 553 #define obd_memory_max() (obd_max_alloc)
 554 #define obd_pages_max() (obd_max_pages)
 555
 556 #endif
 557
 558 #define OBD_DEBUG_MEMUSAGE (1)
 559
 560 #if OBD_DEBUG_MEMUSAGE
 561 #define OBD_ALLOC_POST(ptr, size, name)                                 \
 562                 obd_memory_add(size);                                   \
 563                 CDEBUG(D_MALLOC, name " '" #ptr "': %d at %p.\n",       \
 564                        (int)(size), ptr)
 565
 566 #define OBD_FREE_PRE(ptr, size, name)                                   \
 567         LASSERT(ptr);                                                   \
 568         obd_memory_sub(size);                                           \
 569         CDEBUG(D_MALLOC, name " '" #ptr "': %d at %p.\n",               \
 570                (int)(size), ptr);                                       \
 571         POISON(ptr, 0x5a, size)
 572
 573 #else /* !OBD_DEBUG_MEMUSAGE */
 574
 575 #define OBD_ALLOC_POST(ptr, size, name) ((void)0)
 576 #define OBD_FREE_PRE(ptr, size, name)   ((void)0)
 577
 578 #endif /* !OBD_DEBUG_MEMUSAGE */
 579
 580 #ifdef RANDOM_FAIL_ALLOC
 581 #define HAS_FAIL_ALLOC_FLAG OBD_FAIL_CHECK(OBD_FAIL_GENERAL_ALLOC)
 582 #else
 583 #define HAS_FAIL_ALLOC_FLAG 0
 584 #endif
 585
 586 #define OBD_ALLOC_FAIL_BITS 24
 587 #define OBD_ALLOC_FAIL_MASK ((1 << OBD_ALLOC_FAIL_BITS) - 1)
 588 #define OBD_ALLOC_FAIL_MULT (OBD_ALLOC_FAIL_MASK / 100)
 589
 590 #if defined(LUSTRE_UTILS) /* this version is for utils only */
 591 #define OBD_ALLOC_GFP(ptr, size, gfp_mask)                                    \
 592 do {                                                                          \
 593         (ptr) = cfs_alloc(size, (gfp_mask));                                  \
 594         if (unlikely((ptr) == NULL)) {                                        \
 595                 CERROR("kmalloc of '" #ptr "' (%d bytes) failed at %s:%d\n",  \
 596                        (int)(size), __FILE__, __LINE__);                      \
 597         } else {                                                              \
 598                 memset(ptr, 0, size);                                         \
 599                 CDEBUG(D_MALLOC, "kmalloced '" #ptr "': %d at %p\n",          \
 600                        (int)(size), ptr);                                     \
 601         }                                                                     \
 602 } while (0)
 603 #else /* this version is for the kernel and liblustre */
 604 #define OBD_FREE_RTN0(ptr)                                                    \
 605 ({                                                                            \
 606         cfs_free(ptr);                                                        \
 607         (ptr) = NULL;                                                         \
 608         0;                                                                    \
 609 })
 610 #define OBD_ALLOC_GFP(ptr, size, gfp_mask)                                    \
 611 do {                                                                          \
 612         (ptr) = cfs_alloc(size, (gfp_mask));                                  \
 613         if (likely((ptr) != NULL &&                                           \
 614                    (!HAS_FAIL_ALLOC_FLAG || obd_alloc_fail_rate == 0 ||       \
 615                     !obd_alloc_fail(ptr, #ptr, "km", size,                    \
 616                                     __FILE__, __LINE__) ||                    \
 617                     OBD_FREE_RTN0(ptr)))){                                    \
 618                 memset(ptr, 0, size);                                         \
 619                 OBD_ALLOC_POST(ptr, size, "kmalloced");                       \
 620         }                                                                     \
 621 } while (0)
 622 #endif
 623
 624 #ifndef OBD_ALLOC_MASK
 625 # define OBD_ALLOC_MASK CFS_ALLOC_IO
 626 #endif
 627
 628 #define OBD_ALLOC(ptr, size) OBD_ALLOC_GFP(ptr, size, OBD_ALLOC_MASK)
 629 #define OBD_ALLOC_WAIT(ptr, size) OBD_ALLOC_GFP(ptr, size, CFS_ALLOC_STD)
 630 #define OBD_ALLOC_PTR(ptr) OBD_ALLOC(ptr, sizeof *(ptr))
 631 #define OBD_ALLOC_PTR_WAIT(ptr) OBD_ALLOC_WAIT(ptr, sizeof *(ptr))
 632
 633 #ifdef __arch_um__
 634 # define OBD_VMALLOC(ptr, size) OBD_ALLOC(ptr, size)
 635 #else
 636 # define OBD_VMALLOC(ptr, size)                                               \
 637 do {                                                                          \
 638         (ptr) = cfs_alloc_large(size);                                        \
 639         if (unlikely((ptr) == NULL)) {                                        \
 640                 CERROR("vmalloc of '" #ptr "' (%d bytes) failed\n",           \
 641                        (int)(size));                                          \
 642                 CERROR(LPU64" total bytes allocated by Lustre, %d by LNET\n", \
 643                        obd_memory_sum(), atomic_read(&libcfs_kmemory));       \
 644         } else {                                                              \
 645                 memset(ptr, 0, size);                                         \
 646                 OBD_ALLOC_POST(ptr, size, "vmalloced");                       \
 647         }                                                                     \
 648 } while(0)
 649 #endif
 650
 651 #ifdef CONFIG_DEBUG_SLAB
 652 #define POISON(ptr, c, s) do {} while (0)
 653 #define POISON_PTR(ptr)  ((void)0)
 654 #else
 655 #define POISON(ptr, c, s) memset(ptr, c, s)
 656 #define POISON_PTR(ptr)  (ptr) = (void *)0xdeadbeef
 657 #endif
 658
 659 #ifdef POISON_BULK
 660 #define POISON_PAGE(page, val) do { memset(kmap(page), val, CFS_PAGE_SIZE);   \
 661                                     kunmap(page); } while (0)
 662 #else
 663 #define POISON_PAGE(page, val) do { } while (0)
 664 #endif
 665
 666 #ifdef __KERNEL__
 667 #define OBD_FREE(ptr, size)                                                   \
 668 do {                                                                          \
 669         OBD_FREE_PRE(ptr, size, "kfreed");                                    \
 670         cfs_free(ptr);                                                        \
 671         POISON_PTR(ptr);                                                      \
 672 } while(0)
 673
 674
 675 #ifdef HAVE_RCU
 676 # ifdef HAVE_CALL_RCU_PARAM
 677 #  define my_call_rcu(rcu, cb)            call_rcu(rcu, cb, rcu)
 678 # else
 679 #  define my_call_rcu(rcu, cb)            call_rcu(rcu, cb)
 680 # endif
 681 #else
 682 # define my_call_rcu(rcu, cb)             (cb)(rcu)
 683 #endif
 684
 685 #define OBD_FREE_RCU_CB(ptr, size, handle, free_cb)                           \
 686 do {                                                                          \
 687         struct portals_handle *__h = (handle);                                \
 688         LASSERT(handle);                                                      \
 689         __h->h_ptr = (ptr);                                                   \
 690         __h->h_size = (size);                                                 \
 691         __h->h_free_cb = (void (*)(void *, size_t))(free_cb);                 \
 692         my_call_rcu(&__h->h_rcu, class_handle_free_cb);                       \
 693         POISON_PTR(ptr);                                                      \
 694 } while(0)
 695 #define OBD_FREE_RCU(ptr, size, handle) OBD_FREE_RCU_CB(ptr, size, handle, NULL)
 696
 697 #else
 698 #define OBD_FREE(ptr, size) ((void)(size), free((ptr)))
 699 #define OBD_FREE_RCU(ptr, size, handle) (OBD_FREE(ptr, size))
 700 #define OBD_FREE_RCU_CB(ptr, size, handle, cb)     ((*(cb))(ptr, size))
 701 #endif /* ifdef __KERNEL__ */
 702
 703 #ifdef __arch_um__
 704 # define OBD_VFREE(ptr, size) OBD_FREE(ptr, size)
 705 #else
 706 # define OBD_VFREE(ptr, size)                                                 \
 707 do {                                                                          \
 708         OBD_FREE_PRE(ptr, size, "vfreed");                                    \
 709         cfs_free_large(ptr);                                                  \
 710         POISON_PTR(ptr);                                                      \
 711 } while(0)
 712 #endif
 713
 714 /* we memset() the slab object to 0 when allocation succeeds, so DO NOT
 715  * HAVE A CTOR THAT DOES ANYTHING.  its work will be cleared here.  we'd
 716  * love to assert on that, but slab.c keeps kmem_cache_s all to itself. */
 717 #define OBD_SLAB_FREE_RTN0(ptr, slab)                                         \
 718 ({                                                                            \
 719         cfs_mem_cache_free((slab), (ptr));                                    \
 720         (ptr) = NULL;                                                         \
 721         0;                                                                    \
 722 })
 723 #define OBD_SLAB_ALLOC(ptr, slab, type, size)                                 \
 724 do {                                                                          \
 725         LASSERT(ergo(type != CFS_ALLOC_ATOMIC, !in_interrupt()));             \
 726         (ptr) = cfs_mem_cache_alloc(slab, (type));                            \
 727         if (likely((ptr) != NULL &&                                           \
 728                    (!HAS_FAIL_ALLOC_FLAG || obd_alloc_fail_rate == 0 ||       \
 729                     !obd_alloc_fail(ptr, #ptr, "slab-", size,                 \
 730                                     __FILE__, __LINE__) ||                    \
 731                     OBD_SLAB_FREE_RTN0(ptr, slab)))) {                        \
 732                 memset(ptr, 0, size);                                         \
 733                 OBD_ALLOC_POST(ptr, size, "slab-alloced");                    \
 734         }                                                                     \
 735 } while(0)
 736
 737 #define OBD_FREE_PTR(ptr) OBD_FREE(ptr, sizeof *(ptr))
 738
 739 #define OBD_SLAB_FREE(ptr, slab, size)                                        \
 740 do {                                                                          \
 741         OBD_FREE_PRE(ptr, size, "slab-freed");                                \
 742         cfs_mem_cache_free(slab, ptr);                                        \
 743         POISON_PTR(ptr);                                                      \
 744 } while(0)
 745
 746 #define OBD_SLAB_ALLOC_PTR(ptr, slab)                                         \
 747         OBD_SLAB_ALLOC((ptr), (slab), CFS_ALLOC_STD, sizeof *(ptr))
 748 #define OBD_SLAB_FREE_PTR(ptr, slab)                                          \
 749         OBD_SLAB_FREE((ptr), (slab), sizeof *(ptr))
 750 #define OBD_SLAB_ALLOC_PTR_GFP(ptr, slab, gfp)                              \
 751         OBD_SLAB_ALLOC((ptr), (slab), (gfp), sizeof *(ptr))
 752
 753 #define KEY_IS(str) \
 754         (keylen >= (sizeof(str)-1) && memcmp(key, str, (sizeof(str)-1)) == 0)
 755
 756 /* Wrapper for contiguous page frame allocation */
 757 #define OBD_PAGES_ALLOC(ptr, order, gfp_mask)                                 \
 758 do {                                                                          \
 759         (ptr) = cfs_alloc_pages(gfp_mask, order);                             \
 760         if (unlikely((ptr) == NULL)) {                                        \
 761                 CERROR("alloc_pages of '" #ptr "' %d page(s) / "LPU64" bytes "\
 762                        "failed\n", (int)(1 << (order)),                       \
 763                        (__u64)((1 << (order)) << CFS_PAGE_SHIFT));            \
 764                 CERROR(LPU64" total bytes and "LPU64" total pages "           \
 765                        "("LPU64" bytes) allocated by Lustre, "                \
 766                        "%d total bytes by LNET\n",                            \
 767                        obd_memory_sum(),                                      \
 768                        obd_pages_sum() << CFS_PAGE_SHIFT,                     \
 769                        obd_pages_sum(),                                       \
 770                        atomic_read(&libcfs_kmemory));                         \
 771         } else {                                                              \
 772                 obd_pages_add(order);                                         \
 773                 CDEBUG(D_MALLOC, "alloc_pages '" #ptr "': %d page(s) / "      \
 774                        LPU64" bytes at %p.\n",                                \
 775                        (int)(1 << (order)),                                   \
 776                        (__u64)((1 << (order)) << CFS_PAGE_SHIFT), ptr);       \
 777         }                                                                     \
 778 } while (0)
 779
 780 #define OBD_PAGE_ALLOC(ptr, gfp_mask)                                         \
 781         OBD_PAGES_ALLOC(ptr, 0, gfp_mask)
 782
 783 #define OBD_PAGES_FREE(ptr, order)                                            \
 784 do {                                                                          \
 785         LASSERT(ptr);                                                         \
 786         obd_pages_sub(order);                                                 \
 787         CDEBUG(D_MALLOC, "free_pages '" #ptr "': %d page(s) / "LPU64" bytes " \
 788                "at %p.\n",                                                    \
 789                (int)(1 << (order)), (__u64)((1 << (order)) << CFS_PAGE_SHIFT),\
 790                ptr);                                                          \
 791         __cfs_free_pages(ptr, order);                                         \
 792         (ptr) = (void *)0xdeadbeef;                                           \
 793 } while (0)
 794
 795 #define OBD_PAGE_FREE(ptr) OBD_PAGES_FREE(ptr, 0)
 796
 797 #endif