lustre/include/obd_support.h

   1 /*
   2  * GPL HEADER START
   3  *
   4  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License version 2 only,
   8  * as published by the Free Software Foundation.
   9  *
  10  * This program is distributed in the hope that it will be useful, but
  11  * WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13  * General Public License version 2 for more details (a copy is included
  14  * in the LICENSE file that accompanied this code).
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * version 2 along with this program; If not, see
  18  * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
  19  *
  20  * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
  21  * CA 95054 USA or visit www.sun.com if you need additional information or
  22  * have any questions.
  23  *
  24  * GPL HEADER END
  25  */
  26 /*
  27  * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
  28  * Use is subject to license terms.
  29  *
  30  * Copyright (c) 2011, 2014, Intel Corporation.
  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 #ifndef __KERNEL__
  41 # error Userspace should not include obd_support.h.
  42 #endif /* !__KERNEL__ */
  43
  44 #include <linux/atomic.h>
  45 #include <linux/highmem.h>
  46 #include <linux/slab.h>
  47 #include <linux/types.h>
  48
  49 #include <libcfs/libcfs.h>
  50 #include <lprocfs_status.h>
  51 #include <lustre_handles.h>
  52
  53 /* global variables */
  54 extern struct lprocfs_stats *obd_memory;
  55 enum {
  56         OBD_MEMORY_STAT = 0,
  57         OBD_MEMORY_PAGES_STAT = 1,
  58         OBD_STATS_NUM,
  59 };
  60
  61 extern unsigned int obd_debug_peer_on_timeout;
  62 extern unsigned int obd_dump_on_timeout;
  63 extern unsigned int obd_dump_on_eviction;
  64 /* obd_timeout should only be used for recovery, not for
  65    networking / disk / timings affected by load (use Adaptive Timeouts) */
  66 extern unsigned int obd_timeout;          /* seconds */
  67 extern unsigned int ldlm_timeout;         /* seconds */
  68 extern unsigned int obd_timeout_set;
  69 extern unsigned int ldlm_timeout_set;
  70 extern unsigned int bulk_timeout;
  71 extern unsigned int at_min;
  72 extern unsigned int at_max;
  73 extern unsigned int at_history;
  74 extern int at_early_margin;
  75 extern int at_extra;
  76 extern unsigned long obd_max_dirty_pages;
  77 extern atomic_long_t obd_dirty_pages;
  78 extern atomic_long_t obd_dirty_transit_pages;
  79 extern unsigned int obd_alloc_fail_rate;
  80 extern char obd_jobid_var[];
  81
  82 /* lvfs.c */
  83 int obd_alloc_fail(const void *ptr, const char *name, const char *type,
  84                    size_t size, const char *file, int line);
  85
  86 /* Some hash init argument constants */
  87 #define HASH_POOLS_BKT_BITS 3
  88 #define HASH_POOLS_CUR_BITS 3
  89 #define HASH_POOLS_MAX_BITS 7
  90 #define HASH_UUID_BKT_BITS 5
  91 #define HASH_UUID_CUR_BITS 7
  92 #define HASH_UUID_MAX_BITS 12
  93 #define HASH_NID_BKT_BITS 5
  94 #define HASH_NID_CUR_BITS 7
  95 #define HASH_NID_MAX_BITS 12
  96 #define HASH_NID_STATS_BKT_BITS 5
  97 #define HASH_NID_STATS_CUR_BITS 7
  98 #define HASH_NID_STATS_MAX_BITS 12
  99 #define HASH_LQE_BKT_BITS 5
 100 #define HASH_LQE_CUR_BITS 7
 101 #define HASH_LQE_MAX_BITS 12
 102 #define HASH_CONN_BKT_BITS 5
 103 #define HASH_CONN_CUR_BITS 5
 104 #define HASH_CONN_MAX_BITS 15
 105 #define HASH_EXP_LOCK_BKT_BITS  5
 106 #define HASH_EXP_LOCK_CUR_BITS  7
 107 #define HASH_EXP_LOCK_MAX_BITS  16
 108 #define HASH_CL_ENV_BKT_BITS    5
 109 #define HASH_CL_ENV_BITS        10
 110 #define HASH_JOB_STATS_BKT_BITS 5
 111 #define HASH_JOB_STATS_CUR_BITS 7
 112 #define HASH_JOB_STATS_MAX_BITS 12
 113
 114 /* Timeout definitions */
 115 #define OBD_TIMEOUT_DEFAULT             100
 116 #define LDLM_TIMEOUT_DEFAULT            20
 117 #define MDS_LDLM_TIMEOUT_DEFAULT        6
 118 /* Time to wait for all clients to reconnect during recovery (hard limit) */
 119 #define OBD_RECOVERY_TIME_HARD          (obd_timeout * 9)
 120 /* Time to wait for all clients to reconnect during recovery (soft limit) */
 121 /* Should be very conservative; must catch the first reconnect after reboot */
 122 #define OBD_RECOVERY_TIME_SOFT          (obd_timeout * 3)
 123 /* Change recovery-small 26b time if you change this */
 124 #define PING_INTERVAL max(obd_timeout / 4, 1U)
 125 /* a bit more than maximal journal commit time in seconds */
 126 #define PING_INTERVAL_SHORT min(PING_INTERVAL, 7U)
 127 /* Client may skip 1 ping; we must wait at least 2.5. But for multiple
 128  * failover targets the client only pings one server at a time, and pings
 129  * can be lost on a loaded network. Since eviction has serious consequences,
 130  * and there's no urgent need to evict a client just because it's idle, we
 131  * should be very conservative here. */
 132 #define PING_EVICT_TIMEOUT (PING_INTERVAL * 6)
 133 #define DISK_TIMEOUT 50          /* Beyond this we warn about disk speed */
 134 #define CONNECTION_SWITCH_MIN 5U /* Connection switching rate limiter */
 135  /* Max connect interval for nonresponsive servers; ~50s to avoid building up
 136     connect requests in the LND queues, but within obd_timeout so we don't
 137     miss the recovery window */
 138 #define CONNECTION_SWITCH_MAX min(50U, max(CONNECTION_SWITCH_MIN,obd_timeout))
 139 #define CONNECTION_SWITCH_INC 5  /* Connection timeout backoff */
 140 /* In general this should be low to have quick detection of a system
 141    running on a backup server. (If it's too low, import_select_connection
 142    will increase the timeout anyhow.)  */
 143 #define INITIAL_CONNECT_TIMEOUT max(CONNECTION_SWITCH_MIN,obd_timeout/20)
 144 /* The max delay between connects is SWITCH_MAX + SWITCH_INC + INITIAL */
 145 #define RECONNECT_DELAY_MAX (CONNECTION_SWITCH_MAX + CONNECTION_SWITCH_INC + \
 146                              INITIAL_CONNECT_TIMEOUT)
 147 /* The min time a target should wait for clients to reconnect in recovery */
 148 #define OBD_RECOVERY_TIME_MIN    (2*RECONNECT_DELAY_MAX)
 149 #define OBD_IR_FACTOR_MIN         1
 150 #define OBD_IR_FACTOR_MAX         10
 151 #define OBD_IR_FACTOR_DEFAULT    (OBD_IR_FACTOR_MAX/2)
 152 /* default timeout for the MGS to become IR_FULL */
 153 #define OBD_IR_MGS_TIMEOUT       (4*obd_timeout)
 154 #define LONG_UNLINK 300          /* Unlink should happen before now */
 155
 156 /**
 157  * Time interval of shrink, if the client is "idle" more than this interval,
 158  * then the ll_grant thread will return the requested grant space to filter
 159  */
 160 #define GRANT_SHRINK_INTERVAL            1200/*20 minutes*/
 161
 162 #define OBD_FAIL_MDS                     0x100
 163 #define OBD_FAIL_MDS_HANDLE_UNPACK       0x101
 164 #define OBD_FAIL_MDS_GETATTR_NET         0x102
 165 #define OBD_FAIL_MDS_GETATTR_PACK        0x103
 166 #define OBD_FAIL_MDS_READPAGE_NET        0x104
 167 #define OBD_FAIL_MDS_READPAGE_PACK       0x105
 168 #define OBD_FAIL_MDS_SENDPAGE            0x106
 169 #define OBD_FAIL_MDS_REINT_NET           0x107
 170 #define OBD_FAIL_MDS_REINT_UNPACK        0x108
 171 #define OBD_FAIL_MDS_REINT_SETATTR       0x109
 172 #define OBD_FAIL_MDS_REINT_SETATTR_WRITE 0x10a
 173 #define OBD_FAIL_MDS_REINT_CREATE        0x10b
 174 #define OBD_FAIL_MDS_REINT_CREATE_WRITE  0x10c
 175 #define OBD_FAIL_MDS_REINT_UNLINK        0x10d
 176 #define OBD_FAIL_MDS_REINT_UNLINK_WRITE  0x10e
 177 #define OBD_FAIL_MDS_REINT_LINK          0x10f
 178 #define OBD_FAIL_MDS_REINT_LINK_WRITE    0x110
 179 #define OBD_FAIL_MDS_REINT_RENAME        0x111
 180 #define OBD_FAIL_MDS_REINT_RENAME_WRITE  0x112
 181 #define OBD_FAIL_MDS_OPEN_NET            0x113
 182 #define OBD_FAIL_MDS_OPEN_PACK           0x114
 183 #define OBD_FAIL_MDS_CLOSE_NET           0x115
 184 #define OBD_FAIL_MDS_CLOSE_PACK          0x116
 185 #define OBD_FAIL_MDS_CONNECT_NET         0x117
 186 #define OBD_FAIL_MDS_CONNECT_PACK        0x118
 187 #define OBD_FAIL_MDS_REINT_NET_REP       0x119
 188 #define OBD_FAIL_MDS_DISCONNECT_NET      0x11a
 189 #define OBD_FAIL_MDS_GETSTATUS_NET       0x11b
 190 #define OBD_FAIL_MDS_GETSTATUS_PACK      0x11c
 191 #define OBD_FAIL_MDS_STATFS_PACK         0x11d
 192 #define OBD_FAIL_MDS_STATFS_NET          0x11e
 193 #define OBD_FAIL_MDS_GETATTR_NAME_NET    0x11f
 194 #define OBD_FAIL_MDS_PIN_NET             0x120
 195 #define OBD_FAIL_MDS_UNPIN_NET           0x121
 196 #define OBD_FAIL_MDS_ALL_REPLY_NET       0x122
 197 #define OBD_FAIL_MDS_ALL_REQUEST_NET     0x123
 198 #define OBD_FAIL_MDS_SYNC_NET            0x124
 199 #define OBD_FAIL_MDS_SYNC_PACK           0x125
 200 /*      OBD_FAIL_MDS_DONE_WRITING_NET    0x126 obsolete since 2.8.0 */
 201 /*      OBD_FAIL_MDS_DONE_WRITING_PACK   0x127 obsolete since 2.8.0 */
 202 #define OBD_FAIL_MDS_ALLOC_OBDO          0x128
 203 #define OBD_FAIL_MDS_PAUSE_OPEN          0x129
 204 #define OBD_FAIL_MDS_STATFS_LCW_SLEEP    0x12a
 205 #define OBD_FAIL_MDS_OPEN_CREATE         0x12b
 206 #define OBD_FAIL_MDS_OST_SETATTR         0x12c
 207 /*      OBD_FAIL_MDS_QUOTACHECK_NET      0x12d obsolete since 2.4 */
 208 #define OBD_FAIL_MDS_QUOTACTL_NET        0x12e
 209 #define OBD_FAIL_MDS_CLIENT_ADD          0x12f
 210 #define OBD_FAIL_MDS_GETXATTR_NET        0x130
 211 #define OBD_FAIL_MDS_GETXATTR_PACK       0x131
 212 #define OBD_FAIL_MDS_SETXATTR_NET        0x132
 213 #define OBD_FAIL_MDS_SETXATTR            0x133
 214 #define OBD_FAIL_MDS_SETXATTR_WRITE      0x134
 215 #define OBD_FAIL_MDS_FS_SETUP            0x135
 216 #define OBD_FAIL_MDS_RESEND              0x136
 217 #define OBD_FAIL_MDS_LLOG_CREATE_FAILED  0x137
 218 #define OBD_FAIL_MDS_LOV_SYNC_RACE       0x138
 219 #define OBD_FAIL_MDS_OSC_PRECREATE       0x139
 220 #define OBD_FAIL_MDS_LLOG_SYNC_TIMEOUT   0x13a
 221 #define OBD_FAIL_MDS_CLOSE_NET_REP       0x13b
 222 #define OBD_FAIL_MDS_BLOCK_QUOTA_REQ     0x13c
 223 #define OBD_FAIL_MDS_DROP_QUOTA_REQ      0x13d
 224 #define OBD_FAIL_MDS_REMOVE_COMMON_EA    0x13e
 225 #define OBD_FAIL_MDS_ALLOW_COMMON_EA_SETTING   0x13f
 226 #define OBD_FAIL_MDS_FAIL_LOV_LOG_ADD    0x140
 227 #define OBD_FAIL_MDS_LOV_PREP_CREATE     0x141
 228 #define OBD_FAIL_MDS_REINT_DELAY         0x142
 229 #define OBD_FAIL_MDS_READLINK_EPROTO     0x143
 230 #define OBD_FAIL_MDS_OPEN_WAIT_CREATE    0x144
 231 #define OBD_FAIL_MDS_PDO_LOCK            0x145
 232 #define OBD_FAIL_MDS_PDO_LOCK2           0x146
 233 #define OBD_FAIL_MDS_OSC_CREATE_FAIL     0x147
 234 #define OBD_FAIL_MDS_NEGATIVE_POSITIVE   0x148
 235 #define OBD_FAIL_MDS_HSM_STATE_GET_NET          0x149
 236 #define OBD_FAIL_MDS_HSM_STATE_SET_NET          0x14a
 237 #define OBD_FAIL_MDS_HSM_PROGRESS_NET           0x14b
 238 #define OBD_FAIL_MDS_HSM_REQUEST_NET            0x14c
 239 #define OBD_FAIL_MDS_HSM_CT_REGISTER_NET        0x14d
 240 #define OBD_FAIL_MDS_HSM_CT_UNREGISTER_NET      0x14e
 241 #define OBD_FAIL_MDS_SWAP_LAYOUTS_NET           0x14f
 242 #define OBD_FAIL_MDS_HSM_ACTION_NET             0x150
 243 #define OBD_FAIL_MDS_CHANGELOG_INIT             0x151
 244 #define OBD_FAIL_MDS_HSM_SWAP_LAYOUTS           0x152
 245 #define OBD_FAIL_MDS_RENAME              0x153
 246 #define OBD_FAIL_MDS_RENAME2             0x154
 247 #define OBD_FAIL_MDS_RENAME3             0x155
 248 #define OBD_FAIL_MDS_RENAME4             0x156
 249 #define OBD_FAIL_MDS_LDLM_REPLY_NET      0x157
 250
 251 /* layout lock */
 252 #define OBD_FAIL_MDS_NO_LL_GETATTR       0x170
 253 #define OBD_FAIL_MDS_NO_LL_OPEN          0x171
 254 #define OBD_FAIL_MDS_LL_BLOCK            0x172
 255
 256 /* CMD */
 257 #define OBD_FAIL_MDS_IS_SUBDIR_NET       0x180
 258 #define OBD_FAIL_MDS_IS_SUBDIR_PACK      0x181
 259 #define OBD_FAIL_MDS_SET_INFO_NET        0x182
 260 #define OBD_FAIL_MDS_WRITEPAGE_NET       0x183
 261 #define OBD_FAIL_MDS_WRITEPAGE_PACK      0x184
 262 #define OBD_FAIL_MDS_RECOVERY_ACCEPTS_GAPS 0x185
 263 #define OBD_FAIL_MDS_GET_INFO_NET        0x186
 264 #define OBD_FAIL_MDS_DQACQ_NET           0x187
 265
 266 /* OI scrub */
 267 #define OBD_FAIL_OSD_SCRUB_DELAY                        0x190
 268 #define OBD_FAIL_OSD_SCRUB_CRASH                        0x191
 269 #define OBD_FAIL_OSD_SCRUB_FATAL                        0x192
 270 #define OBD_FAIL_OSD_FID_MAPPING                        0x193
 271 #define OBD_FAIL_OSD_LMA_INCOMPAT                       0x194
 272 #define OBD_FAIL_OSD_COMPAT_INVALID_ENTRY               0x195
 273 #define OBD_FAIL_OSD_COMPAT_NO_ENTRY                    0x196
 274
 275 #define OBD_FAIL_OST                     0x200
 276 #define OBD_FAIL_OST_CONNECT_NET         0x201
 277 #define OBD_FAIL_OST_DISCONNECT_NET      0x202
 278 #define OBD_FAIL_OST_GET_INFO_NET        0x203
 279 #define OBD_FAIL_OST_CREATE_NET          0x204
 280 #define OBD_FAIL_OST_DESTROY_NET         0x205
 281 #define OBD_FAIL_OST_GETATTR_NET         0x206
 282 #define OBD_FAIL_OST_SETATTR_NET         0x207
 283 #define OBD_FAIL_OST_OPEN_NET            0x208
 284 #define OBD_FAIL_OST_CLOSE_NET           0x209
 285 #define OBD_FAIL_OST_BRW_NET             0x20a
 286 #define OBD_FAIL_OST_PUNCH_NET           0x20b
 287 #define OBD_FAIL_OST_STATFS_NET          0x20c
 288 #define OBD_FAIL_OST_HANDLE_UNPACK       0x20d
 289 #define OBD_FAIL_OST_BRW_WRITE_BULK      0x20e
 290 #define OBD_FAIL_OST_BRW_READ_BULK       0x20f
 291 #define OBD_FAIL_OST_SYNC_NET            0x210
 292 #define OBD_FAIL_OST_ALL_REPLY_NET       0x211
 293 #define OBD_FAIL_OST_ALL_REQUEST_NET     0x212
 294 #define OBD_FAIL_OST_LDLM_REPLY_NET      0x213
 295 #define OBD_FAIL_OST_BRW_PAUSE_BULK      0x214
 296 #define OBD_FAIL_OST_ENOSPC              0x215
 297 #define OBD_FAIL_OST_EROFS               0x216
 298 #define OBD_FAIL_OST_ENOENT              0x217
 299 /*      OBD_FAIL_OST_QUOTACHECK_NET      0x218 obsolete since 2.4 */
 300 #define OBD_FAIL_OST_QUOTACTL_NET        0x219
 301 #define OBD_FAIL_OST_CHECKSUM_RECEIVE    0x21a
 302 #define OBD_FAIL_OST_CHECKSUM_SEND       0x21b
 303 #define OBD_FAIL_OST_BRW_SIZE            0x21c
 304 #define OBD_FAIL_OST_DROP_REQ            0x21d
 305 #define OBD_FAIL_OST_SETATTR_CREDITS     0x21e
 306 #define OBD_FAIL_OST_HOLD_WRITE_RPC      0x21f
 307 #define OBD_FAIL_OST_BRW_WRITE_BULK2     0x220
 308 #define OBD_FAIL_OST_LLOG_RECOVERY_TIMEOUT 0x221
 309 #define OBD_FAIL_OST_CANCEL_COOKIE_TIMEOUT 0x222
 310 #define OBD_FAIL_OST_PAUSE_CREATE        0x223
 311 #define OBD_FAIL_OST_BRW_PAUSE_PACK      0x224
 312 #define OBD_FAIL_OST_CONNECT_NET2        0x225
 313 #define OBD_FAIL_OST_NOMEM               0x226
 314 #define OBD_FAIL_OST_BRW_PAUSE_BULK2     0x227
 315 #define OBD_FAIL_OST_MAPBLK_ENOSPC       0x228
 316 #define OBD_FAIL_OST_ENOINO              0x229
 317 #define OBD_FAIL_OST_DQACQ_NET           0x230
 318 #define OBD_FAIL_OST_STATFS_EINPROGRESS  0x231
 319 #define OBD_FAIL_OST_SET_INFO_NET        0x232
 320 #define OBD_FAIL_OST_NODESTROY           0x233
 321
 322 #define OBD_FAIL_LDLM                    0x300
 323 #define OBD_FAIL_LDLM_NAMESPACE_NEW      0x301
 324 #define OBD_FAIL_LDLM_ENQUEUE_NET                       0x302
 325 #define OBD_FAIL_LDLM_CONVERT_NET                       0x303
 326 #define OBD_FAIL_LDLM_CANCEL_NET                        0x304
 327 #define OBD_FAIL_LDLM_BL_CALLBACK_NET                   0x305
 328 #define OBD_FAIL_LDLM_CP_CALLBACK_NET                   0x306
 329 #define OBD_FAIL_LDLM_GL_CALLBACK_NET                   0x307
 330 #define OBD_FAIL_LDLM_ENQUEUE_EXTENT_ERR 0x308
 331 #define OBD_FAIL_LDLM_ENQUEUE_INTENT_ERR 0x309
 332 #define OBD_FAIL_LDLM_CREATE_RESOURCE    0x30a
 333 #define OBD_FAIL_LDLM_ENQUEUE_BLOCKED    0x30b
 334 #define OBD_FAIL_LDLM_REPLY              0x30c
 335 #define OBD_FAIL_LDLM_RECOV_CLIENTS      0x30d
 336 #define OBD_FAIL_LDLM_ENQUEUE_OLD_EXPORT 0x30e
 337 #define OBD_FAIL_LDLM_GLIMPSE            0x30f
 338 #define OBD_FAIL_LDLM_CANCEL_RACE        0x310
 339 #define OBD_FAIL_LDLM_CANCEL_EVICT_RACE  0x311
 340 #define OBD_FAIL_LDLM_PAUSE_CANCEL       0x312
 341 #define OBD_FAIL_LDLM_CLOSE_THREAD       0x313
 342 #define OBD_FAIL_LDLM_CANCEL_BL_CB_RACE  0x314
 343 #define OBD_FAIL_LDLM_CP_CB_WAIT         0x315
 344 #define OBD_FAIL_LDLM_OST_FAIL_RACE      0x316
 345 #define OBD_FAIL_LDLM_INTR_CP_AST        0x317
 346 #define OBD_FAIL_LDLM_CP_BL_RACE         0x318
 347 #define OBD_FAIL_LDLM_NEW_LOCK           0x319
 348 #define OBD_FAIL_LDLM_AGL_DELAY          0x31a
 349 #define OBD_FAIL_LDLM_AGL_NOLOCK         0x31b
 350 #define OBD_FAIL_LDLM_OST_LVB            0x31c
 351 #define OBD_FAIL_LDLM_ENQUEUE_HANG       0x31d
 352 #define OBD_FAIL_LDLM_PAUSE_CANCEL2      0x31f
 353 #define OBD_FAIL_LDLM_CP_CB_WAIT2        0x320
 354 #define OBD_FAIL_LDLM_CP_CB_WAIT3        0x321
 355 #define OBD_FAIL_LDLM_CP_CB_WAIT4        0x322
 356 #define OBD_FAIL_LDLM_CP_CB_WAIT5        0x323
 357
 358 #define OBD_FAIL_LDLM_SRV_BL_AST         0x324
 359 #define OBD_FAIL_LDLM_SRV_CP_AST         0x325
 360 #define OBD_FAIL_LDLM_SRV_GL_AST         0x326
 361
 362 /* LOCKLESS IO */
 363 #define OBD_FAIL_LDLM_SET_CONTENTION     0x385
 364
 365 #define OBD_FAIL_OSC                     0x400
 366 #define OBD_FAIL_OSC_BRW_READ_BULK       0x401
 367 #define OBD_FAIL_OSC_BRW_WRITE_BULK      0x402
 368 #define OBD_FAIL_OSC_LOCK_BL_AST         0x403
 369 #define OBD_FAIL_OSC_LOCK_CP_AST         0x404
 370 #define OBD_FAIL_OSC_MATCH               0x405
 371 #define OBD_FAIL_OSC_BRW_PREP_REQ        0x406
 372 #define OBD_FAIL_OSC_SHUTDOWN            0x407
 373 #define OBD_FAIL_OSC_CHECKSUM_RECEIVE    0x408
 374 #define OBD_FAIL_OSC_CHECKSUM_SEND       0x409
 375 #define OBD_FAIL_OSC_BRW_PREP_REQ2       0x40a
 376 #define OBD_FAIL_OSC_CONNECT_CKSUM       0x40b
 377 #define OBD_FAIL_OSC_CKSUM_ADLER_ONLY    0x40c
 378 #define OBD_FAIL_OSC_DIO_PAUSE           0x40d
 379 #define OBD_FAIL_OSC_OBJECT_CONTENTION   0x40e
 380 #define OBD_FAIL_OSC_CP_CANCEL_RACE      0x40f
 381 #define OBD_FAIL_OSC_CP_ENQ_RACE         0x410
 382 #define OBD_FAIL_OSC_NO_GRANT            0x411
 383 #define OBD_FAIL_OSC_DELAY_SETTIME       0x412
 384
 385 #define OBD_FAIL_PTLRPC                  0x500
 386 #define OBD_FAIL_PTLRPC_ACK              0x501
 387 #define OBD_FAIL_PTLRPC_RQBD             0x502
 388 #define OBD_FAIL_PTLRPC_BULK_GET_NET     0x503
 389 #define OBD_FAIL_PTLRPC_BULK_PUT_NET     0x504
 390 #define OBD_FAIL_PTLRPC_DROP_RPC         0x505
 391 #define OBD_FAIL_PTLRPC_DELAY_SEND       0x506
 392 #define OBD_FAIL_PTLRPC_DELAY_RECOV      0x507
 393 #define OBD_FAIL_PTLRPC_CLIENT_BULK_CB   0x508
 394 #define OBD_FAIL_PTLRPC_PAUSE_REQ        0x50a
 395 #define OBD_FAIL_PTLRPC_PAUSE_REP        0x50c
 396 #define OBD_FAIL_PTLRPC_IMP_DEACTIVE     0x50d
 397 #define OBD_FAIL_PTLRPC_DUMP_LOG         0x50e
 398 #define OBD_FAIL_PTLRPC_LONG_REPL_UNLINK 0x50f
 399 #define OBD_FAIL_PTLRPC_LONG_BULK_UNLINK 0x510
 400 #define OBD_FAIL_PTLRPC_HPREQ_TIMEOUT    0x511
 401 #define OBD_FAIL_PTLRPC_HPREQ_NOTIMEOUT  0x512
 402 #define OBD_FAIL_PTLRPC_DROP_REQ_OPC     0x513
 403 #define OBD_FAIL_PTLRPC_FINISH_REPLAY    0x514
 404 #define OBD_FAIL_PTLRPC_CLIENT_BULK_CB2  0x515
 405 #define OBD_FAIL_PTLRPC_DELAY_IMP_FULL   0x516
 406 #define OBD_FAIL_PTLRPC_CANCEL_RESEND    0x517
 407 #define OBD_FAIL_PTLRPC_CLIENT_BULK_CB3  0x520
 408
 409 #define OBD_FAIL_OBD_PING_NET            0x600
 410 #define OBD_FAIL_OBD_LOG_CANCEL_NET      0x601
 411 #define OBD_FAIL_OBD_LOGD_NET            0x602
 412 /*      OBD_FAIL_OBD_QC_CALLBACK_NET     0x603 obsolete since 2.4 */
 413 #define OBD_FAIL_OBD_DQACQ               0x604
 414 #define OBD_FAIL_OBD_LLOG_SETUP          0x605
 415 #define OBD_FAIL_OBD_LOG_CANCEL_REP      0x606
 416 #define OBD_FAIL_OBD_IDX_READ_NET        0x607
 417 #define OBD_FAIL_OBD_IDX_READ_BREAK      0x608
 418 #define OBD_FAIL_OBD_NO_LRU              0x609
 419
 420 #define OBD_FAIL_TGT_REPLY_NET           0x700
 421 #define OBD_FAIL_TGT_CONN_RACE           0x701
 422 #define OBD_FAIL_TGT_FORCE_RECONNECT     0x702
 423 #define OBD_FAIL_TGT_DELAY_CONNECT       0x703
 424 #define OBD_FAIL_TGT_DELAY_RECONNECT     0x704
 425 #define OBD_FAIL_TGT_DELAY_PRECREATE     0x705
 426 #define OBD_FAIL_TGT_TOOMANY_THREADS     0x706
 427 #define OBD_FAIL_TGT_REPLAY_DROP         0x707
 428 #define OBD_FAIL_TGT_FAKE_EXP            0x708
 429 #define OBD_FAIL_TGT_REPLAY_DELAY        0x709
 430 /* #define OBD_FAIL_TGT_LAST_REPLAY         0x710 (obsoleted) */
 431 #define OBD_FAIL_TGT_CLIENT_ADD          0x711
 432 #define OBD_FAIL_TGT_RCVG_FLAG           0x712
 433 #define OBD_FAIL_TGT_DELAY_CONDITIONAL   0x713
 434 #define OBD_FAIL_TGT_REPLAY_DELAY2       0x714
 435 #define OBD_FAIL_TGT_REPLAY_RECONNECT    0x715
 436
 437 #define OBD_FAIL_MDC_REVALIDATE_PAUSE    0x800
 438 #define OBD_FAIL_MDC_ENQUEUE_PAUSE       0x801
 439 #define OBD_FAIL_MDC_OLD_EXT_FLAGS       0x802
 440 #define OBD_FAIL_MDC_GETATTR_ENQUEUE     0x803
 441 #define OBD_FAIL_MDC_RPCS_SEM            0x804
 442 #define OBD_FAIL_MDC_LIGHTWEIGHT         0x805
 443
 444 #define OBD_FAIL_MGS                     0x900
 445 #define OBD_FAIL_MGS_ALL_REQUEST_NET     0x901
 446 #define OBD_FAIL_MGS_ALL_REPLY_NET       0x902
 447 #define OBD_FAIL_MGC_PAUSE_PROCESS_LOG   0x903
 448 #define OBD_FAIL_MGS_PAUSE_REQ           0x904
 449 #define OBD_FAIL_MGS_PAUSE_TARGET_REG    0x905
 450 #define OBD_FAIL_MGS_CONNECT_NET         0x906
 451 #define OBD_FAIL_MGS_DISCONNECT_NET      0x907
 452 #define OBD_FAIL_MGS_SET_INFO_NET        0x908
 453 #define OBD_FAIL_MGS_EXCEPTION_NET       0x909
 454 #define OBD_FAIL_MGS_TARGET_REG_NET      0x90a
 455 #define OBD_FAIL_MGS_TARGET_DEL_NET      0x90b
 456 #define OBD_FAIL_MGS_CONFIG_READ_NET     0x90c
 457 #define OBD_FAIL_MGS_LDLM_REPLY_NET      0x90d
 458
 459 #define OBD_FAIL_QUOTA_DQACQ_NET                        0xA01
 460 #define OBD_FAIL_QUOTA_EDQUOT            0xA02
 461 #define OBD_FAIL_QUOTA_DELAY_REINT       0xA03
 462 #define OBD_FAIL_QUOTA_RECOVERABLE_ERR   0xA04
 463
 464 #define OBD_FAIL_LPROC_REMOVE            0xB00
 465
 466 #define OBD_FAIL_GENERAL_ALLOC           0xC00
 467
 468 #define OBD_FAIL_SEQ                     0x1000
 469 #define OBD_FAIL_SEQ_QUERY_NET           0x1001
 470 #define OBD_FAIL_SEQ_EXHAUST             0x1002
 471
 472 #define OBD_FAIL_FLD                     0x1100
 473 #define OBD_FAIL_FLD_QUERY_NET           0x1101
 474 #define OBD_FAIL_FLD_READ_NET            0x1102
 475
 476 #define OBD_FAIL_SEC_CTX                 0x1200
 477 #define OBD_FAIL_SEC_CTX_INIT_NET        0x1201
 478 #define OBD_FAIL_SEC_CTX_INIT_CONT_NET   0x1202
 479 #define OBD_FAIL_SEC_CTX_FINI_NET        0x1203
 480 #define OBD_FAIL_SEC_CTX_HDL_PAUSE       0x1204
 481
 482 #define OBD_FAIL_LLOG                               0x1300
 483 #define OBD_FAIL_LLOG_ORIGIN_CONNECT_NET            0x1301
 484 #define OBD_FAIL_LLOG_ORIGIN_HANDLE_CREATE_NET      0x1302
 485 #define OBD_FAIL_LLOG_ORIGIN_HANDLE_DESTROY_NET     0x1303
 486 #define OBD_FAIL_LLOG_ORIGIN_HANDLE_READ_HEADER_NET 0x1304
 487 #define OBD_FAIL_LLOG_ORIGIN_HANDLE_NEXT_BLOCK_NET  0x1305
 488 #define OBD_FAIL_LLOG_ORIGIN_HANDLE_PREV_BLOCK_NET  0x1306
 489 #define OBD_FAIL_LLOG_ORIGIN_HANDLE_WRITE_REC_NET   0x1307
 490 #define OBD_FAIL_LLOG_ORIGIN_HANDLE_CLOSE_NET       0x1308
 491 #define OBD_FAIL_LLOG_CATINFO_NET                   0x1309
 492 #define OBD_FAIL_MDS_SYNC_CAPA_SL                   0x1310
 493 #define OBD_FAIL_SEQ_ALLOC                          0x1311
 494
 495 #define OBD_FAIL_LLITE                              0x1400
 496 #define OBD_FAIL_LLITE_FAULT_TRUNC_RACE             0x1401
 497 #define OBD_FAIL_LOCK_STATE_WAIT_INTR               0x1402
 498 #define OBD_FAIL_LOV_INIT                           0x1403
 499 #define OBD_FAIL_GLIMPSE_DELAY                      0x1404
 500 #define OBD_FAIL_LLITE_XATTR_ENOMEM                 0x1405
 501
 502 #define OBD_FAIL_FID_INDIR      0x1501
 503 #define OBD_FAIL_FID_INLMA      0x1502
 504 #define OBD_FAIL_FID_IGIF       0x1504
 505 #define OBD_FAIL_FID_LOOKUP     0x1505
 506 #define OBD_FAIL_FID_NOLMA      0x1506
 507
 508 /* LFSCK */
 509 #define OBD_FAIL_LFSCK_DELAY1           0x1600
 510 #define OBD_FAIL_LFSCK_DELAY2           0x1601
 511 #define OBD_FAIL_LFSCK_DELAY3           0x1602
 512 #define OBD_FAIL_LFSCK_LINKEA_CRASH     0x1603
 513 #define OBD_FAIL_LFSCK_LINKEA_MORE      0x1604
 514 #define OBD_FAIL_LFSCK_LINKEA_MORE2     0x1605
 515 #define OBD_FAIL_LFSCK_FATAL1           0x1608
 516 #define OBD_FAIL_LFSCK_FATAL2           0x1609
 517 #define OBD_FAIL_LFSCK_CRASH            0x160a
 518 #define OBD_FAIL_LFSCK_NO_AUTO          0x160b
 519 #define OBD_FAIL_LFSCK_NO_DOUBLESCAN    0x160c
 520 #define OBD_FAIL_LFSCK_SKIP_LASTID      0x160d
 521 #define OBD_FAIL_LFSCK_DELAY4           0x160e
 522 #define OBD_FAIL_LFSCK_BAD_LMMOI        0x160f
 523 #define OBD_FAIL_LFSCK_DANGLING         0x1610
 524 #define OBD_FAIL_LFSCK_UNMATCHED_PAIR1  0x1611
 525 #define OBD_FAIL_LFSCK_UNMATCHED_PAIR2  0x1612
 526 #define OBD_FAIL_LFSCK_BAD_OWNER        0x1613
 527 #define OBD_FAIL_LFSCK_MULTIPLE_REF     0x1614
 528 #define OBD_FAIL_LFSCK_LOST_STRIPE      0x1615
 529 #define OBD_FAIL_LFSCK_LOST_MDTOBJ      0x1616
 530 #define OBD_FAIL_LFSCK_NOPFID           0x1617
 531 #define OBD_FAIL_LFSCK_CHANGE_STRIPE    0x1618
 532 #define OBD_FAIL_LFSCK_INVALID_PFID     0x1619
 533 #define OBD_FAIL_LFSCK_LOST_SPEOBJ      0x161a
 534 #define OBD_FAIL_LFSCK_DELAY5           0x161b
 535 #define OBD_FAIL_LFSCK_BAD_NETWORK      0x161c
 536 #define OBD_FAIL_LFSCK_NO_LINKEA        0x161d
 537 #define OBD_FAIL_LFSCK_BAD_PARENT       0x161e
 538 #define OBD_FAIL_LFSCK_DANGLING2        0x1620
 539 #define OBD_FAIL_LFSCK_DANGLING3        0x1621
 540 #define OBD_FAIL_LFSCK_MUL_REF          0x1622
 541 #define OBD_FAIL_LFSCK_BAD_TYPE         0x1623
 542 #define OBD_FAIL_LFSCK_NO_NAMEENTRY     0x1624
 543 #define OBD_FAIL_LFSCK_MORE_NLINK       0x1625
 544 #define OBD_FAIL_LFSCK_LESS_NLINK       0x1626
 545 #define OBD_FAIL_LFSCK_LINKEA_OVERFLOW  0x1627
 546 #define OBD_FAIL_LFSCK_BAD_NAME_HASH    0x1628
 547 #define OBD_FAIL_LFSCK_LOST_MASTER_LMV  0x1629
 548 #define OBD_FAIL_LFSCK_LOST_SLAVE_LMV   0x162a
 549 #define OBD_FAIL_LFSCK_BAD_SLAVE_LMV    0x162b
 550 #define OBD_FAIL_LFSCK_BAD_SLAVE_NAME   0x162c
 551
 552 #define OBD_FAIL_LFSCK_NOTIFY_NET       0x16f0
 553 #define OBD_FAIL_LFSCK_QUERY_NET        0x16f1
 554
 555 /* UPDATE */
 556 #define OBD_FAIL_OUT_UPDATE_NET         0x1700
 557 #define OBD_FAIL_OUT_UPDATE_NET_REP     0x1701
 558
 559 /* MIGRATE */
 560 #define OBD_FAIL_MIGRATE_NET_REP                0x1800
 561 #define OBD_FAIL_MIGRATE_ENTRIES                0x1801
 562 #define OBD_FAIL_MIGRATE_LINKEA                 0x1802
 563 #define OBD_FAIL_MIGRATE_DELAY                  0x1803
 564
 565 /* LMV */
 566 #define OBD_FAIL_UNKNOWN_LMV_STRIPE             0x1901
 567
 568 /* DT */
 569 #define OBD_FAIL_DT_DECLARE_ATTR_GET            0x2000
 570 #define OBD_FAIL_DT_ATTR_GET                    0x2001
 571 #define OBD_FAIL_DT_DECLARE_ATTR_SET            0x2002
 572 #define OBD_FAIL_DT_ATTR_SET                    0x2003
 573 #define OBD_FAIL_DT_DECLARE_XATTR_GET           0x2004
 574 #define OBD_FAIL_DT_XATTR_GET                   0x2005
 575 #define OBD_FAIL_DT_DECLARE_XATTR_SET           0x2006
 576 #define OBD_FAIL_DT_XATTR_SET                   0x2007
 577 #define OBD_FAIL_DT_DECLARE_XATTR_DEL           0x2008
 578 #define OBD_FAIL_DT_XATTR_DEL                   0x2009
 579 #define OBD_FAIL_DT_XATTR_LIST                  0x200a
 580 #define OBD_FAIL_DT_DECLARE_CREATE              0x200b
 581 #define OBD_FAIL_DT_CREATE                      0x200c
 582 #define OBD_FAIL_DT_DECLARE_DESTROY             0x200d
 583 #define OBD_FAIL_DT_DESTROY                     0x200e
 584 #define OBD_FAIL_DT_INDEX_TRY                   0x200f
 585 #define OBD_FAIL_DT_DECLARE_REF_ADD             0x2010
 586 #define OBD_FAIL_DT_REF_ADD                     0x2011
 587 #define OBD_FAIL_DT_DECLARE_REF_DEL             0x2012
 588 #define OBD_FAIL_DT_REF_DEL                     0x2013
 589 #define OBD_FAIL_DT_DECLARE_INSERT              0x2014
 590 #define OBD_FAIL_DT_INSERT                      0x2015
 591 #define OBD_FAIL_DT_DECLARE_DELETE              0x2016
 592 #define OBD_FAIL_DT_DELETE                      0x2017
 593 #define OBD_FAIL_DT_LOOKUP                      0x2018
 594
 595 /* Assign references to moved code to reduce code changes */
 596 #define OBD_FAIL_PRECHECK(id)                   CFS_FAIL_PRECHECK(id)
 597 #define OBD_FAIL_CHECK(id)                      CFS_FAIL_CHECK(id)
 598 #define OBD_FAIL_CHECK_VALUE(id, value)         CFS_FAIL_CHECK_VALUE(id, value)
 599 #define OBD_FAIL_CHECK_ORSET(id, value)         CFS_FAIL_CHECK_ORSET(id, value)
 600 #define OBD_FAIL_CHECK_RESET(id, value)         CFS_FAIL_CHECK_RESET(id, value)
 601 #define OBD_FAIL_RETURN(id, ret)                CFS_FAIL_RETURN(id, ret)
 602 #define OBD_FAIL_TIMEOUT(id, secs)              CFS_FAIL_TIMEOUT(id, secs)
 603 #define OBD_FAIL_TIMEOUT_MS(id, ms)             CFS_FAIL_TIMEOUT_MS(id, ms)
 604 #define OBD_FAIL_TIMEOUT_ORSET(id, value, secs) CFS_FAIL_TIMEOUT_ORSET(id, value, secs)
 605 #define OBD_RACE(id)                            CFS_RACE(id)
 606 #define OBD_FAIL_ONCE                           CFS_FAIL_ONCE
 607 #define OBD_FAILED                              CFS_FAILED
 608
 609 #define LUT_FAIL_CLASS(fail_id)                 (((fail_id) >> 8) << 16)
 610 #define LUT_FAIL_MGT                            LUT_FAIL_CLASS(OBD_FAIL_MGS)
 611 #define LUT_FAIL_MDT                            LUT_FAIL_CLASS(OBD_FAIL_MDS)
 612 #define LUT_FAIL_OST                            LUT_FAIL_CLASS(OBD_FAIL_OST)
 613
 614 extern atomic_t libcfs_kmemory;
 615
 616 #ifdef CONFIG_PROC_FS
 617 #define obd_memory_add(size)                                                  \
 618         lprocfs_counter_add(obd_memory, OBD_MEMORY_STAT, (long)(size))
 619 #define obd_memory_sub(size)                                                  \
 620         lprocfs_counter_sub(obd_memory, OBD_MEMORY_STAT, (long)(size))
 621 #define obd_memory_sum()                                                      \
 622         lprocfs_stats_collector(obd_memory, OBD_MEMORY_STAT,                  \
 623                                 LPROCFS_FIELDS_FLAGS_SUM)
 624 #define obd_pages_add(order)                                                  \
 625         lprocfs_counter_add(obd_memory, OBD_MEMORY_PAGES_STAT,                \
 626                             (long)(1 << (order)))
 627 #define obd_pages_sub(order)                                                  \
 628         lprocfs_counter_sub(obd_memory, OBD_MEMORY_PAGES_STAT,                \
 629                             (long)(1 << (order)))
 630 #define obd_pages_sum()                                                       \
 631         lprocfs_stats_collector(obd_memory, OBD_MEMORY_PAGES_STAT,            \
 632                                 LPROCFS_FIELDS_FLAGS_SUM)
 633
 634 extern void obd_update_maxusage(void);
 635 extern __u64 obd_memory_max(void);
 636 extern __u64 obd_pages_max(void);
 637
 638 #else /* CONFIG_PROC_FS */
 639
 640 extern __u64 obd_alloc;
 641 extern __u64 obd_pages;
 642
 643 extern __u64 obd_max_alloc;
 644 extern __u64 obd_max_pages;
 645
 646 static inline void obd_memory_add(long size)
 647 {
 648         obd_alloc += size;
 649         if (obd_alloc > obd_max_alloc)
 650                 obd_max_alloc = obd_alloc;
 651 }
 652
 653 static inline void obd_memory_sub(long size)
 654 {
 655         obd_alloc -= size;
 656 }
 657
 658 static inline void obd_pages_add(int order)
 659 {
 660         obd_pages += 1<< order;
 661         if (obd_pages > obd_max_pages)
 662                 obd_max_pages = obd_pages;
 663 }
 664
 665 static inline void obd_pages_sub(int order)
 666 {
 667         obd_pages -= 1<< order;
 668 }
 669
 670 #define obd_memory_sum() (obd_alloc)
 671 #define obd_pages_sum()  (obd_pages)
 672
 673 #define obd_memory_max() (obd_max_alloc)
 674 #define obd_pages_max() (obd_max_pages)
 675
 676 #endif /* !CONFIG_PROC_FS */
 677
 678 #define OBD_DEBUG_MEMUSAGE (1)
 679
 680 #if OBD_DEBUG_MEMUSAGE
 681 #define OBD_ALLOC_POST(ptr, size, name)                                 \
 682                 obd_memory_add(size);                                   \
 683                 CDEBUG(D_MALLOC, name " '" #ptr "': %d at %p.\n",       \
 684                        (int)(size), ptr)
 685
 686 #define OBD_FREE_PRE(ptr, size, name)                                   \
 687         LASSERT(ptr);                                                   \
 688         obd_memory_sub(size);                                           \
 689         CDEBUG(D_MALLOC, name " '" #ptr "': %d at %p.\n",               \
 690                (int)(size), ptr);                                       \
 691         POISON(ptr, 0x5a, size)
 692
 693 #else /* !OBD_DEBUG_MEMUSAGE */
 694
 695 #define OBD_ALLOC_POST(ptr, size, name) ((void)0)
 696 #define OBD_FREE_PRE(ptr, size, name)   ((void)0)
 697
 698 #endif /* !OBD_DEBUG_MEMUSAGE */
 699
 700 #ifdef RANDOM_FAIL_ALLOC
 701 #define HAS_FAIL_ALLOC_FLAG OBD_FAIL_CHECK(OBD_FAIL_GENERAL_ALLOC)
 702 #else
 703 #define HAS_FAIL_ALLOC_FLAG 0
 704 #endif
 705
 706 #define OBD_ALLOC_FAIL_BITS 24
 707 #define OBD_ALLOC_FAIL_MASK ((1 << OBD_ALLOC_FAIL_BITS) - 1)
 708 #define OBD_ALLOC_FAIL_MULT (OBD_ALLOC_FAIL_MASK / 100)
 709
 710 #define OBD_FREE_RTN0(ptr)                                                    \
 711 ({                                                                            \
 712         kfree(ptr);                                                        \
 713         (ptr) = NULL;                                                         \
 714         0;                                                                    \
 715 })
 716
 717 #define __OBD_MALLOC_VERBOSE(ptr, cptab, cpt, size, flags)                    \
 718 do {                                                                          \
 719         (ptr) = (cptab) == NULL ?                                             \
 720                 kmalloc(size, flags | __GFP_ZERO) :                           \
 721                 cfs_cpt_malloc(cptab, cpt, size, flags | __GFP_ZERO);         \
 722         if (likely((ptr) != NULL &&                                           \
 723                    (!HAS_FAIL_ALLOC_FLAG || obd_alloc_fail_rate == 0 ||       \
 724                     !obd_alloc_fail(ptr, #ptr, "km", size,                    \
 725                                     __FILE__, __LINE__) ||                    \
 726                     OBD_FREE_RTN0(ptr)))){                                    \
 727                 OBD_ALLOC_POST(ptr, size, "kmalloced");                       \
 728         }                                                                     \
 729 } while (0)
 730
 731 #define OBD_ALLOC_GFP(ptr, size, gfp_mask)                                    \
 732         __OBD_MALLOC_VERBOSE(ptr, NULL, 0, size, gfp_mask)
 733
 734 #define OBD_ALLOC(ptr, size) OBD_ALLOC_GFP(ptr, size, GFP_NOFS)
 735 #define OBD_ALLOC_WAIT(ptr, size) OBD_ALLOC_GFP(ptr, size, GFP_KERNEL)
 736 #define OBD_ALLOC_PTR(ptr) OBD_ALLOC(ptr, sizeof *(ptr))
 737 #define OBD_ALLOC_PTR_WAIT(ptr) OBD_ALLOC_WAIT(ptr, sizeof *(ptr))
 738
 739 #define OBD_CPT_ALLOC_GFP(ptr, cptab, cpt, size, gfp_mask)                    \
 740         __OBD_MALLOC_VERBOSE(ptr, cptab, cpt, size, gfp_mask)
 741
 742 #define OBD_CPT_ALLOC(ptr, cptab, cpt, size)                                  \
 743         OBD_CPT_ALLOC_GFP(ptr, cptab, cpt, size, GFP_NOFS)
 744
 745 #define OBD_CPT_ALLOC_PTR(ptr, cptab, cpt)                                    \
 746         OBD_CPT_ALLOC(ptr, cptab, cpt, sizeof *(ptr))
 747
 748 /* Direct use of __vmalloc() allows for protection flag specification
 749  * (and particularly to not set __GFP_FS, which is likely to cause some
 750  * deadlock situations in our code).
 751  */
 752 #define __OBD_VMALLOC_VERBOSE(ptr, cptab, cpt, size)                          \
 753 do {                                                                          \
 754         (ptr) = cptab == NULL ?                                               \
 755                 __vmalloc(size, GFP_NOFS | __GFP_HIGHMEM | __GFP_ZERO,        \
 756                           PAGE_KERNEL) :                                      \
 757                 cfs_cpt_vzalloc(cptab, cpt, size);                            \
 758         if (unlikely((ptr) == NULL)) {                                        \
 759                 CERROR("vmalloc of '" #ptr "' (%d bytes) failed\n",           \
 760                        (int)(size));                                          \
 761                 CERROR(LPU64" total bytes allocated by Lustre, %d by LNET\n", \
 762                        obd_memory_sum(), atomic_read(&libcfs_kmemory));       \
 763         } else {                                                              \
 764                 OBD_ALLOC_POST(ptr, size, "vmalloced");                       \
 765         }                                                                     \
 766 } while(0)
 767
 768 #define OBD_VMALLOC(ptr, size)                                                \
 769          __OBD_VMALLOC_VERBOSE(ptr, NULL, 0, size)
 770 #define OBD_CPT_VMALLOC(ptr, cptab, cpt, size)                                \
 771          __OBD_VMALLOC_VERBOSE(ptr, cptab, cpt, size)
 772
 773 /* Allocations above this size are considered too big and could not be done
 774  * atomically.
 775  *
 776  * Be very careful when changing this value, especially when decreasing it,
 777  * since vmalloc in Linux doesn't perform well on multi-cores system, calling
 778  * vmalloc in critical path would hurt performance badly. See LU-66.
 779  */
 780 #define OBD_ALLOC_BIG (4 * PAGE_CACHE_SIZE)
 781
 782 #define OBD_ALLOC_LARGE(ptr, size)                                            \
 783 do {                                                                          \
 784         if (size > OBD_ALLOC_BIG)                                             \
 785                 OBD_VMALLOC(ptr, size);                                       \
 786         else                                                                  \
 787                 OBD_ALLOC(ptr, size);                                         \
 788 } while (0)
 789
 790 #define OBD_CPT_ALLOC_LARGE(ptr, cptab, cpt, size)                            \
 791 do {                                                                          \
 792         if (size > OBD_ALLOC_BIG)                                             \
 793                 OBD_CPT_VMALLOC(ptr, cptab, cpt, size);                       \
 794         else                                                                  \
 795                 OBD_CPT_ALLOC(ptr, cptab, cpt, size);                         \
 796 } while (0)
 797
 798 #define OBD_FREE_LARGE(ptr, size)                                             \
 799 do {                                                                          \
 800         if (size > OBD_ALLOC_BIG)                                             \
 801                 OBD_VFREE(ptr, size);                                         \
 802         else                                                                  \
 803                 OBD_FREE(ptr, size);                                          \
 804 } while (0)
 805
 806 #ifdef CONFIG_DEBUG_SLAB
 807 #define POISON(ptr, c, s) do {} while (0)
 808 #define POISON_PTR(ptr)  ((void)0)
 809 #else
 810 #define POISON(ptr, c, s) memset(ptr, c, s)
 811 #define POISON_PTR(ptr)  (ptr) = (void *)0xdeadbeef
 812 #endif
 813
 814 #ifdef POISON_BULK
 815 #define POISON_PAGE(page, val) do { memset(kmap(page), val, PAGE_CACHE_SIZE);   \
 816                                     kunmap(page); } while (0)
 817 #else
 818 #define POISON_PAGE(page, val) do { } while (0)
 819 #endif
 820
 821 #define OBD_FREE(ptr, size)                                                   \
 822 do {                                                                          \
 823         OBD_FREE_PRE(ptr, size, "kfreed");                                    \
 824         kfree(ptr);                                                        \
 825         POISON_PTR(ptr);                                                      \
 826 } while(0)
 827
 828
 829 #define OBD_FREE_RCU(ptr, size, handle)                                       \
 830 do {                                                                          \
 831         struct portals_handle *__h = (handle);                                \
 832                                                                               \
 833         LASSERT(handle != NULL);                                              \
 834         __h->h_cookie = (unsigned long)(ptr);                                 \
 835         __h->h_size = (size);                                                 \
 836         call_rcu(&__h->h_rcu, class_handle_free_cb);                          \
 837         POISON_PTR(ptr);                                                      \
 838 } while(0)
 839
 840 #define OBD_VFREE(ptr, size)                            \
 841         do {                                            \
 842                 OBD_FREE_PRE(ptr, size, "vfreed");      \
 843                 vfree(ptr);                     \
 844                 POISON_PTR(ptr);                        \
 845         } while (0)
 846
 847 /* we memset() the slab object to 0 when allocation succeeds, so DO NOT
 848  * HAVE A CTOR THAT DOES ANYTHING.  its work will be cleared here.  we'd
 849  * love to assert on that, but slab.c keeps kmem_cache_s all to itself. */
 850 #define OBD_SLAB_FREE_RTN0(ptr, slab)                                         \
 851 ({                                                                            \
 852         kmem_cache_free((slab), (ptr));                                    \
 853         (ptr) = NULL;                                                         \
 854         0;                                                                    \
 855 })
 856
 857 #define __OBD_SLAB_ALLOC_VERBOSE(ptr, slab, cptab, cpt, size, type)           \
 858 do {                                                                          \
 859         LASSERT(ergo((type) != GFP_ATOMIC, !in_interrupt()));         \
 860         (ptr) = (cptab) == NULL ?                                             \
 861                 kmem_cache_alloc(slab, type | __GFP_ZERO) :                   \
 862                 cfs_mem_cache_cpt_alloc(slab, cptab, cpt, type | __GFP_ZERO); \
 863         if (likely((ptr) != NULL &&                                           \
 864                    (!HAS_FAIL_ALLOC_FLAG || obd_alloc_fail_rate == 0 ||       \
 865                     !obd_alloc_fail(ptr, #ptr, "slab-", size,                 \
 866                                     __FILE__, __LINE__) ||                    \
 867                     OBD_SLAB_FREE_RTN0(ptr, slab)))) {                        \
 868                 OBD_ALLOC_POST(ptr, size, "slab-alloced");                    \
 869         }                                                                     \
 870 } while(0)
 871
 872 #define OBD_SLAB_ALLOC_GFP(ptr, slab, size, flags)                            \
 873         __OBD_SLAB_ALLOC_VERBOSE(ptr, slab, NULL, 0, size, flags)
 874 #define OBD_SLAB_CPT_ALLOC_GFP(ptr, slab, cptab, cpt, size, flags)            \
 875         __OBD_SLAB_ALLOC_VERBOSE(ptr, slab, cptab, cpt, size, flags)
 876
 877 #define OBD_FREE_PTR(ptr) OBD_FREE(ptr, sizeof *(ptr))
 878
 879 #define OBD_SLAB_FREE(ptr, slab, size)                                        \
 880 do {                                                                          \
 881         OBD_FREE_PRE(ptr, size, "slab-freed");                                \
 882         kmem_cache_free(slab, ptr);                                        \
 883         POISON_PTR(ptr);                                                      \
 884 } while(0)
 885
 886 #define OBD_SLAB_ALLOC(ptr, slab, size)                                       \
 887         OBD_SLAB_ALLOC_GFP(ptr, slab, size, GFP_NOFS)
 888
 889 #define OBD_SLAB_CPT_ALLOC(ptr, slab, cptab, cpt, size)                       \
 890         OBD_SLAB_CPT_ALLOC_GFP(ptr, slab, cptab, cpt, size, GFP_NOFS)
 891
 892 #define OBD_SLAB_ALLOC_PTR(ptr, slab)                                         \
 893         OBD_SLAB_ALLOC(ptr, slab, sizeof *(ptr))
 894
 895 #define OBD_SLAB_CPT_ALLOC_PTR(ptr, slab, cptab, cpt)                         \
 896         OBD_SLAB_CPT_ALLOC(ptr, slab, cptab, cpt, sizeof *(ptr))
 897
 898 #define OBD_SLAB_ALLOC_PTR_GFP(ptr, slab, flags)                              \
 899         OBD_SLAB_ALLOC_GFP(ptr, slab, sizeof *(ptr), flags)
 900
 901 #define OBD_SLAB_CPT_ALLOC_PTR_GFP(ptr, slab, cptab, cpt, flags)                      \
 902         OBD_SLAB_CPT_ALLOC_GFP(ptr, slab, cptab, cpt, sizeof *(ptr), flags)
 903
 904 #define OBD_SLAB_FREE_PTR(ptr, slab)                                          \
 905         OBD_SLAB_FREE((ptr), (slab), sizeof *(ptr))
 906
 907 #define KEY_IS(str) \
 908         (keylen >= (sizeof(str)-1) && memcmp(key, str, (sizeof(str)-1)) == 0)
 909
 910 /* Wrapper for contiguous page frame allocation */
 911 #define __OBD_PAGE_ALLOC_VERBOSE(ptr, cptab, cpt, gfp_mask)                   \
 912 do {                                                                          \
 913         (ptr) = (cptab) == NULL ?                                             \
 914                 alloc_page(gfp_mask) :                                \
 915                 cfs_page_cpt_alloc(cptab, cpt, gfp_mask);                     \
 916         if (unlikely((ptr) == NULL)) {                                        \
 917                 CERROR("alloc_pages of '" #ptr "' %d page(s) / "LPU64" bytes "\
 918                        "failed\n", (int)1,                                    \
 919                        (__u64)(1 << PAGE_CACHE_SHIFT));                         \
 920                 CERROR(LPU64" total bytes and "LPU64" total pages "           \
 921                        "("LPU64" bytes) allocated by Lustre, "                \
 922                        "%d total bytes by LNET\n",                            \
 923                        obd_memory_sum(),                                      \
 924                        obd_pages_sum() << PAGE_CACHE_SHIFT,                   \
 925                        obd_pages_sum(),                                       \
 926                        atomic_read(&libcfs_kmemory));                         \
 927         } else {                                                              \
 928                 obd_pages_add(0);                                             \
 929                 CDEBUG(D_MALLOC, "alloc_pages '" #ptr "': %d page(s) / "      \
 930                        LPU64" bytes at %p.\n",                                \
 931                        (int)1,                                                \
 932                        (__u64)(1 << PAGE_CACHE_SHIFT), ptr);                    \
 933         }                                                                     \
 934 } while (0)
 935
 936 #define OBD_PAGE_ALLOC(ptr, gfp_mask)                                         \
 937         __OBD_PAGE_ALLOC_VERBOSE(ptr, NULL, 0, gfp_mask)
 938 #define OBD_PAGE_CPT_ALLOC(ptr, cptab, cpt, gfp_mask)                         \
 939         __OBD_PAGE_ALLOC_VERBOSE(ptr, cptab, cpt, gfp_mask)
 940
 941 #define OBD_PAGE_FREE(ptr)                                                    \
 942 do {                                                                          \
 943         LASSERT(ptr);                                                         \
 944         obd_pages_sub(0);                                                     \
 945         CDEBUG(D_MALLOC, "free_pages '" #ptr "': %d page(s) / "LPU64" bytes " \
 946                "at %p.\n",                                                    \
 947                (int)1, (__u64)(1 << PAGE_CACHE_SHIFT),                          \
 948                ptr);                                                          \
 949         __free_page(ptr);                                                   \
 950         (ptr) = (void *)0xdeadbeef;                                           \
 951 } while (0)
 952
 953 #endif