[cascardo/linux.git] / drivers / staging / lustre / lustre / include / obd_support.h

/*
 * GPL HEADER START
 *
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 only,
 * as published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * General Public License version 2 for more details (a copy is included
 * in the LICENSE file that accompanied this code).
 *
 * You should have received a copy of the GNU General Public License
 * version 2 along with this program; If not, see
 * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
 *
 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
 * CA 95054 USA or visit www.sun.com if you need additional information or
 * have any questions.
 *
 * GPL HEADER END
 */
/*
 * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
 * Use is subject to license terms.
 *
 * Copyright (c) 2011, 2012, Intel Corporation.
 */
/*
 * This file is part of Lustre, http://www.lustre.org/
 * Lustre is a trademark of Sun Microsystems, Inc.
 */

#ifndef _OBD_SUPPORT
#define _OBD_SUPPORT

#include <linux/libcfs/libcfs.h>
#include <lvfs.h>
#include <lprocfs_status.h>

#include <linux/obd_support.h>

/* global variables */
extern struct lprocfs_stats *obd_memory;
enum {
        OBD_MEMORY_STAT = 0,
        OBD_MEMORY_PAGES_STAT = 1,
        OBD_STATS_NUM,
};

extern unsigned int obd_debug_peer_on_timeout;
extern unsigned int obd_dump_on_timeout;
extern unsigned int obd_dump_on_eviction;
/* obd_timeout should only be used for recovery, not for
   networking / disk / timings affected by load (use Adaptive Timeouts) */
extern unsigned int obd_timeout;          /* seconds */
extern unsigned int ldlm_timeout;        /* seconds */
extern unsigned int obd_timeout_set;
extern unsigned int ldlm_timeout_set;
extern unsigned int at_min;
extern unsigned int at_max;
extern unsigned int at_history;
extern int at_early_margin;
extern int at_extra;
extern unsigned int obd_sync_filter;
extern unsigned int obd_max_dirty_pages;
extern atomic_t obd_dirty_pages;
extern atomic_t obd_dirty_transit_pages;
extern unsigned int obd_alloc_fail_rate;
extern char obd_jobid_var[];

/* lvfs.c */
int obd_alloc_fail(const void *ptr, const char *name, const char *type,
                   size_t size, const char *file, int line);

/* Some hash init argument constants */
#define HASH_POOLS_BKT_BITS 3
#define HASH_POOLS_CUR_BITS 3
#define HASH_POOLS_MAX_BITS 7
#define HASH_UUID_BKT_BITS 5
#define HASH_UUID_CUR_BITS 7
#define HASH_UUID_MAX_BITS 12
#define HASH_NID_BKT_BITS 5
#define HASH_NID_CUR_BITS 7
#define HASH_NID_MAX_BITS 12
#define HASH_NID_STATS_BKT_BITS 5
#define HASH_NID_STATS_CUR_BITS 7
#define HASH_NID_STATS_MAX_BITS 12
#define HASH_LQE_BKT_BITS 5
#define HASH_LQE_CUR_BITS 7
#define HASH_LQE_MAX_BITS 12
#define HASH_CONN_BKT_BITS 5
#define HASH_CONN_CUR_BITS 5
#define HASH_CONN_MAX_BITS 15
#define HASH_EXP_LOCK_BKT_BITS  5
#define HASH_EXP_LOCK_CUR_BITS  7
#define HASH_EXP_LOCK_MAX_BITS  16
#define HASH_CL_ENV_BKT_BITS    5
#define HASH_CL_ENV_BITS        10
#define HASH_JOB_STATS_BKT_BITS 5
#define HASH_JOB_STATS_CUR_BITS 7
#define HASH_JOB_STATS_MAX_BITS 12

/* Timeout definitions */
#define OBD_TIMEOUT_DEFAULT          100
#define LDLM_TIMEOUT_DEFAULT        20
#define MDS_LDLM_TIMEOUT_DEFAULT        6
/* Time to wait for all clients to reconnect during recovery (hard limit) */
#define OBD_RECOVERY_TIME_HARD    (obd_timeout * 9)
/* Time to wait for all clients to reconnect during recovery (soft limit) */
/* Should be very conservative; must catch the first reconnect after reboot */
#define OBD_RECOVERY_TIME_SOFT    (obd_timeout * 3)
/* Change recovery-small 26b time if you change this */
#define PING_INTERVAL max(obd_timeout / 4, 1U)
/* a bit more than maximal journal commit time in seconds */
#define PING_INTERVAL_SHORT min(PING_INTERVAL, 7U)
/* Client may skip 1 ping; we must wait at least 2.5. But for multiple
 * failover targets the client only pings one server at a time, and pings
 * can be lost on a loaded network. Since eviction has serious consequences,
 * and there's no urgent need to evict a client just because it's idle, we
 * should be very conservative here. */
#define PING_EVICT_TIMEOUT (PING_INTERVAL * 6)
#define DISK_TIMEOUT 50   /* Beyond this we warn about disk speed */
#define CONNECTION_SWITCH_MIN 5U /* Connection switching rate limiter */
 /* Max connect interval for nonresponsive servers; ~50s to avoid building up
    connect requests in the LND queues, but within obd_timeout so we don't
    miss the recovery window */
#define CONNECTION_SWITCH_MAX min(50U, max(CONNECTION_SWITCH_MIN,obd_timeout))
#define CONNECTION_SWITCH_INC 5  /* Connection timeout backoff */
/* In general this should be low to have quick detection of a system
   running on a backup server. (If it's too low, import_select_connection
   will increase the timeout anyhow.)  */
#define INITIAL_CONNECT_TIMEOUT max(CONNECTION_SWITCH_MIN,obd_timeout/20)
/* The max delay between connects is SWITCH_MAX + SWITCH_INC + INITIAL */
#define RECONNECT_DELAY_MAX (CONNECTION_SWITCH_MAX + CONNECTION_SWITCH_INC + \
                             INITIAL_CONNECT_TIMEOUT)
/* The min time a target should wait for clients to reconnect in recovery */
#define OBD_RECOVERY_TIME_MIN    (2*RECONNECT_DELAY_MAX)
#define OBD_IR_FACTOR_MIN        1
#define OBD_IR_FACTOR_MAX        10
#define OBD_IR_FACTOR_DEFAULT    (OBD_IR_FACTOR_MAX/2)
/* default timeout for the MGS to become IR_FULL */
#define OBD_IR_MGS_TIMEOUT       (4*obd_timeout)
#define LONG_UNLINK 300   /* Unlink should happen before now */

/**
 * Time interval of shrink, if the client is "idle" more than this interval,
 * then the ll_grant thread will return the requested grant space to filter
 */
#define GRANT_SHRINK_INTERVAL       1200/*20 minutes*/

#define OBD_FAIL_MDS                 0x100
#define OBD_FAIL_MDS_HANDLE_UNPACK       0x101
#define OBD_FAIL_MDS_GETATTR_NET         0x102
#define OBD_FAIL_MDS_GETATTR_PACK       0x103
#define OBD_FAIL_MDS_READPAGE_NET       0x104
#define OBD_FAIL_MDS_READPAGE_PACK       0x105
#define OBD_FAIL_MDS_SENDPAGE       0x106
#define OBD_FAIL_MDS_REINT_NET     0x107
#define OBD_FAIL_MDS_REINT_UNPACK       0x108
#define OBD_FAIL_MDS_REINT_SETATTR       0x109
#define OBD_FAIL_MDS_REINT_SETATTR_WRITE 0x10a
#define OBD_FAIL_MDS_REINT_CREATE       0x10b
#define OBD_FAIL_MDS_REINT_CREATE_WRITE  0x10c
#define OBD_FAIL_MDS_REINT_UNLINK       0x10d
#define OBD_FAIL_MDS_REINT_UNLINK_WRITE  0x10e
#define OBD_FAIL_MDS_REINT_LINK   0x10f
#define OBD_FAIL_MDS_REINT_LINK_WRITE    0x110
#define OBD_FAIL_MDS_REINT_RENAME       0x111
#define OBD_FAIL_MDS_REINT_RENAME_WRITE  0x112
#define OBD_FAIL_MDS_OPEN_NET       0x113
#define OBD_FAIL_MDS_OPEN_PACK     0x114
#define OBD_FAIL_MDS_CLOSE_NET     0x115
#define OBD_FAIL_MDS_CLOSE_PACK   0x116
#define OBD_FAIL_MDS_CONNECT_NET         0x117
#define OBD_FAIL_MDS_CONNECT_PACK       0x118
#define OBD_FAIL_MDS_REINT_NET_REP       0x119
#define OBD_FAIL_MDS_DISCONNECT_NET      0x11a
#define OBD_FAIL_MDS_GETSTATUS_NET       0x11b
#define OBD_FAIL_MDS_GETSTATUS_PACK      0x11c
#define OBD_FAIL_MDS_STATFS_PACK         0x11d
#define OBD_FAIL_MDS_STATFS_NET   0x11e
#define OBD_FAIL_MDS_GETATTR_NAME_NET    0x11f
#define OBD_FAIL_MDS_PIN_NET         0x120
#define OBD_FAIL_MDS_UNPIN_NET     0x121
#define OBD_FAIL_MDS_ALL_REPLY_NET       0x122
#define OBD_FAIL_MDS_ALL_REQUEST_NET     0x123
#define OBD_FAIL_MDS_SYNC_NET       0x124
#define OBD_FAIL_MDS_SYNC_PACK     0x125
#define OBD_FAIL_MDS_DONE_WRITING_NET    0x126
#define OBD_FAIL_MDS_DONE_WRITING_PACK   0x127
#define OBD_FAIL_MDS_ALLOC_OBDO   0x128
#define OBD_FAIL_MDS_PAUSE_OPEN   0x129
#define OBD_FAIL_MDS_STATFS_LCW_SLEEP    0x12a
#define OBD_FAIL_MDS_OPEN_CREATE         0x12b
#define OBD_FAIL_MDS_OST_SETATTR         0x12c
#define OBD_FAIL_MDS_QUOTACHECK_NET      0x12d
#define OBD_FAIL_MDS_QUOTACTL_NET       0x12e
#define OBD_FAIL_MDS_CLIENT_ADD   0x12f
#define OBD_FAIL_MDS_GETXATTR_NET       0x130
#define OBD_FAIL_MDS_GETXATTR_PACK       0x131
#define OBD_FAIL_MDS_SETXATTR_NET       0x132
#define OBD_FAIL_MDS_SETXATTR       0x133
#define OBD_FAIL_MDS_SETXATTR_WRITE      0x134
#define OBD_FAIL_MDS_FS_SETUP       0x135
#define OBD_FAIL_MDS_RESEND           0x136
#define OBD_FAIL_MDS_LLOG_CREATE_FAILED  0x137
#define OBD_FAIL_MDS_LOV_SYNC_RACE       0x138
#define OBD_FAIL_MDS_OSC_PRECREATE       0x139
#define OBD_FAIL_MDS_LLOG_SYNC_TIMEOUT   0x13a
#define OBD_FAIL_MDS_CLOSE_NET_REP       0x13b
#define OBD_FAIL_MDS_BLOCK_QUOTA_REQ     0x13c
#define OBD_FAIL_MDS_DROP_QUOTA_REQ      0x13d
#define OBD_FAIL_MDS_REMOVE_COMMON_EA    0x13e
#define OBD_FAIL_MDS_ALLOW_COMMON_EA_SETTING   0x13f
#define OBD_FAIL_MDS_FAIL_LOV_LOG_ADD    0x140
#define OBD_FAIL_MDS_LOV_PREP_CREATE     0x141
#define OBD_FAIL_MDS_REINT_DELAY         0x142
#define OBD_FAIL_MDS_READLINK_EPROTO     0x143
#define OBD_FAIL_MDS_OPEN_WAIT_CREATE    0x144
#define OBD_FAIL_MDS_PDO_LOCK       0x145
#define OBD_FAIL_MDS_PDO_LOCK2     0x146
#define OBD_FAIL_MDS_OSC_CREATE_FAIL     0x147
#define OBD_FAIL_MDS_NEGATIVE_POSITIVE   0x148
#define OBD_FAIL_MDS_HSM_STATE_GET_NET          0x149
#define OBD_FAIL_MDS_HSM_STATE_SET_NET          0x14a
#define OBD_FAIL_MDS_HSM_PROGRESS_NET           0x14b
#define OBD_FAIL_MDS_HSM_REQUEST_NET            0x14c
#define OBD_FAIL_MDS_HSM_CT_REGISTER_NET        0x14d
#define OBD_FAIL_MDS_HSM_CT_UNREGISTER_NET      0x14e
#define OBD_FAIL_MDS_SWAP_LAYOUTS_NET           0x14f
#define OBD_FAIL_MDS_HSM_ACTION_NET             0x150
#define OBD_FAIL_MDS_CHANGELOG_INIT             0x151

/* layout lock */
#define OBD_FAIL_MDS_NO_LL_GETATTR       0x170
#define OBD_FAIL_MDS_NO_LL_OPEN          0x171
#define OBD_FAIL_MDS_LL_BLOCK            0x172

/* CMD */
#define OBD_FAIL_MDS_IS_SUBDIR_NET       0x180
#define OBD_FAIL_MDS_IS_SUBDIR_PACK      0x181
#define OBD_FAIL_MDS_SET_INFO_NET       0x182
#define OBD_FAIL_MDS_WRITEPAGE_NET       0x183
#define OBD_FAIL_MDS_WRITEPAGE_PACK      0x184
#define OBD_FAIL_MDS_RECOVERY_ACCEPTS_GAPS 0x185
#define OBD_FAIL_MDS_GET_INFO_NET       0x186
#define OBD_FAIL_MDS_DQACQ_NET     0x187

/* OI scrub */
#define OBD_FAIL_OSD_SCRUB_DELAY                        0x190
#define OBD_FAIL_OSD_SCRUB_CRASH                        0x191
#define OBD_FAIL_OSD_SCRUB_FATAL                        0x192
#define OBD_FAIL_OSD_FID_MAPPING                        0x193
#define OBD_FAIL_OSD_LMA_INCOMPAT                       0x194

#define OBD_FAIL_OST                 0x200
#define OBD_FAIL_OST_CONNECT_NET         0x201
#define OBD_FAIL_OST_DISCONNECT_NET      0x202
#define OBD_FAIL_OST_GET_INFO_NET       0x203
#define OBD_FAIL_OST_CREATE_NET   0x204
#define OBD_FAIL_OST_DESTROY_NET         0x205
#define OBD_FAIL_OST_GETATTR_NET         0x206
#define OBD_FAIL_OST_SETATTR_NET         0x207
#define OBD_FAIL_OST_OPEN_NET       0x208
#define OBD_FAIL_OST_CLOSE_NET     0x209
#define OBD_FAIL_OST_BRW_NET         0x20a
#define OBD_FAIL_OST_PUNCH_NET     0x20b
#define OBD_FAIL_OST_STATFS_NET   0x20c
#define OBD_FAIL_OST_HANDLE_UNPACK       0x20d
#define OBD_FAIL_OST_BRW_WRITE_BULK      0x20e
#define OBD_FAIL_OST_BRW_READ_BULK       0x20f
#define OBD_FAIL_OST_SYNC_NET       0x210
#define OBD_FAIL_OST_ALL_REPLY_NET       0x211
#define OBD_FAIL_OST_ALL_REQUEST_NET     0x212
#define OBD_FAIL_OST_LDLM_REPLY_NET      0x213
#define OBD_FAIL_OST_BRW_PAUSE_BULK      0x214
#define OBD_FAIL_OST_ENOSPC           0x215
#define OBD_FAIL_OST_EROFS             0x216
#define OBD_FAIL_OST_ENOENT           0x217
#define OBD_FAIL_OST_QUOTACHECK_NET      0x218
#define OBD_FAIL_OST_QUOTACTL_NET       0x219
#define OBD_FAIL_OST_CHECKSUM_RECEIVE    0x21a
#define OBD_FAIL_OST_CHECKSUM_SEND       0x21b
#define OBD_FAIL_OST_BRW_SIZE       0x21c
#define OBD_FAIL_OST_DROP_REQ       0x21d
#define OBD_FAIL_OST_SETATTR_CREDITS     0x21e
#define OBD_FAIL_OST_HOLD_WRITE_RPC      0x21f
#define OBD_FAIL_OST_BRW_WRITE_BULK2     0x220
#define OBD_FAIL_OST_LLOG_RECOVERY_TIMEOUT 0x221
#define OBD_FAIL_OST_CANCEL_COOKIE_TIMEOUT 0x222
#define OBD_FAIL_OST_PAUSE_CREATE       0x223
#define OBD_FAIL_OST_BRW_PAUSE_PACK      0x224
#define OBD_FAIL_OST_CONNECT_NET2       0x225
#define OBD_FAIL_OST_NOMEM             0x226
#define OBD_FAIL_OST_BRW_PAUSE_BULK2     0x227
#define OBD_FAIL_OST_MAPBLK_ENOSPC       0x228
#define OBD_FAIL_OST_ENOINO           0x229
#define OBD_FAIL_OST_DQACQ_NET     0x230
#define OBD_FAIL_OST_STATFS_EINPROGRESS  0x231

#define OBD_FAIL_LDLM               0x300
#define OBD_FAIL_LDLM_NAMESPACE_NEW      0x301
#define OBD_FAIL_LDLM_ENQUEUE_NET                       0x302
#define OBD_FAIL_LDLM_CONVERT_NET                       0x303
#define OBD_FAIL_LDLM_CANCEL_NET                        0x304
#define OBD_FAIL_LDLM_BL_CALLBACK_NET                   0x305
#define OBD_FAIL_LDLM_CP_CALLBACK_NET                   0x306
#define OBD_FAIL_LDLM_GL_CALLBACK_NET                   0x307
#define OBD_FAIL_LDLM_ENQUEUE_EXTENT_ERR 0x308
#define OBD_FAIL_LDLM_ENQUEUE_INTENT_ERR 0x309
#define OBD_FAIL_LDLM_CREATE_RESOURCE    0x30a
#define OBD_FAIL_LDLM_ENQUEUE_BLOCKED    0x30b
#define OBD_FAIL_LDLM_REPLY           0x30c
#define OBD_FAIL_LDLM_RECOV_CLIENTS      0x30d
#define OBD_FAIL_LDLM_ENQUEUE_OLD_EXPORT 0x30e
#define OBD_FAIL_LDLM_GLIMPSE       0x30f
#define OBD_FAIL_LDLM_CANCEL_RACE       0x310
#define OBD_FAIL_LDLM_CANCEL_EVICT_RACE  0x311
#define OBD_FAIL_LDLM_PAUSE_CANCEL       0x312
#define OBD_FAIL_LDLM_CLOSE_THREAD       0x313
#define OBD_FAIL_LDLM_CANCEL_BL_CB_RACE  0x314
#define OBD_FAIL_LDLM_CP_CB_WAIT         0x315
#define OBD_FAIL_LDLM_OST_FAIL_RACE      0x316
#define OBD_FAIL_LDLM_INTR_CP_AST       0x317
#define OBD_FAIL_LDLM_CP_BL_RACE         0x318
#define OBD_FAIL_LDLM_NEW_LOCK     0x319
#define OBD_FAIL_LDLM_AGL_DELAY   0x31a
#define OBD_FAIL_LDLM_AGL_NOLOCK         0x31b
#define OBD_FAIL_LDLM_OST_LVB            0x31c

/* LOCKLESS IO */
#define OBD_FAIL_LDLM_SET_CONTENTION     0x385

#define OBD_FAIL_OSC                 0x400
#define OBD_FAIL_OSC_BRW_READ_BULK       0x401
#define OBD_FAIL_OSC_BRW_WRITE_BULK      0x402
#define OBD_FAIL_OSC_LOCK_BL_AST         0x403
#define OBD_FAIL_OSC_LOCK_CP_AST         0x404
#define OBD_FAIL_OSC_MATCH             0x405
#define OBD_FAIL_OSC_BRW_PREP_REQ       0x406
#define OBD_FAIL_OSC_SHUTDOWN       0x407
#define OBD_FAIL_OSC_CHECKSUM_RECEIVE    0x408
#define OBD_FAIL_OSC_CHECKSUM_SEND       0x409
#define OBD_FAIL_OSC_BRW_PREP_REQ2       0x40a
#define OBD_FAIL_OSC_CONNECT_CKSUM       0x40b
#define OBD_FAIL_OSC_CKSUM_ADLER_ONLY    0x40c
#define OBD_FAIL_OSC_DIO_PAUSE     0x40d
#define OBD_FAIL_OSC_OBJECT_CONTENTION   0x40e
#define OBD_FAIL_OSC_CP_CANCEL_RACE      0x40f
#define OBD_FAIL_OSC_CP_ENQ_RACE         0x410
#define OBD_FAIL_OSC_NO_GRANT       0x411
#define OBD_FAIL_OSC_DELAY_SETTIME       0x412

#define OBD_FAIL_PTLRPC           0x500
#define OBD_FAIL_PTLRPC_ACK           0x501
#define OBD_FAIL_PTLRPC_RQBD         0x502
#define OBD_FAIL_PTLRPC_BULK_GET_NET     0x503
#define OBD_FAIL_PTLRPC_BULK_PUT_NET     0x504
#define OBD_FAIL_PTLRPC_DROP_RPC         0x505
#define OBD_FAIL_PTLRPC_DELAY_SEND       0x506
#define OBD_FAIL_PTLRPC_DELAY_RECOV      0x507
#define OBD_FAIL_PTLRPC_CLIENT_BULK_CB   0x508
#define OBD_FAIL_PTLRPC_PAUSE_REQ       0x50a
#define OBD_FAIL_PTLRPC_PAUSE_REP       0x50c
#define OBD_FAIL_PTLRPC_IMP_DEACTIVE     0x50d
#define OBD_FAIL_PTLRPC_DUMP_LOG         0x50e
#define OBD_FAIL_PTLRPC_LONG_REPL_UNLINK 0x50f
#define OBD_FAIL_PTLRPC_LONG_BULK_UNLINK 0x510
#define OBD_FAIL_PTLRPC_HPREQ_TIMEOUT    0x511
#define OBD_FAIL_PTLRPC_HPREQ_NOTIMEOUT  0x512
#define OBD_FAIL_PTLRPC_DROP_REQ_OPC     0x513
#define OBD_FAIL_PTLRPC_FINISH_REPLAY    0x514
#define OBD_FAIL_PTLRPC_CLIENT_BULK_CB2  0x515
#define OBD_FAIL_PTLRPC_DELAY_IMP_FULL   0x516
#define OBD_FAIL_PTLRPC_CANCEL_RESEND    0x517

#define OBD_FAIL_OBD_PING_NET       0x600
#define OBD_FAIL_OBD_LOG_CANCEL_NET      0x601
#define OBD_FAIL_OBD_LOGD_NET       0x602
#define OBD_FAIL_OBD_QC_CALLBACK_NET     0x603
#define OBD_FAIL_OBD_DQACQ             0x604
#define OBD_FAIL_OBD_LLOG_SETUP   0x605
#define OBD_FAIL_OBD_LOG_CANCEL_REP      0x606
#define OBD_FAIL_OBD_IDX_READ_NET       0x607
#define OBD_FAIL_OBD_IDX_READ_BREAK      0x608
#define OBD_FAIL_OBD_NO_LRU              0x609

#define OBD_FAIL_TGT_REPLY_NET     0x700
#define OBD_FAIL_TGT_CONN_RACE     0x701
#define OBD_FAIL_TGT_FORCE_RECONNECT     0x702
#define OBD_FAIL_TGT_DELAY_CONNECT       0x703
#define OBD_FAIL_TGT_DELAY_RECONNECT     0x704
#define OBD_FAIL_TGT_DELAY_PRECREATE     0x705
#define OBD_FAIL_TGT_TOOMANY_THREADS     0x706
#define OBD_FAIL_TGT_REPLAY_DROP         0x707
#define OBD_FAIL_TGT_FAKE_EXP       0x708
#define OBD_FAIL_TGT_REPLAY_DELAY       0x709
#define OBD_FAIL_TGT_LAST_REPLAY         0x710
#define OBD_FAIL_TGT_CLIENT_ADD   0x711
#define OBD_FAIL_TGT_RCVG_FLAG     0x712

#define OBD_FAIL_MDC_REVALIDATE_PAUSE    0x800
#define OBD_FAIL_MDC_ENQUEUE_PAUSE       0x801
#define OBD_FAIL_MDC_OLD_EXT_FLAGS       0x802
#define OBD_FAIL_MDC_GETATTR_ENQUEUE     0x803
#define OBD_FAIL_MDC_RPCS_SEM            0x804
#define OBD_FAIL_MDC_LIGHTWEIGHT         0x805

#define OBD_FAIL_MGS                 0x900
#define OBD_FAIL_MGS_ALL_REQUEST_NET     0x901
#define OBD_FAIL_MGS_ALL_REPLY_NET       0x902
#define OBD_FAIL_MGC_PAUSE_PROCESS_LOG   0x903
#define OBD_FAIL_MGS_PAUSE_REQ     0x904
#define OBD_FAIL_MGS_PAUSE_TARGET_REG    0x905

#define OBD_FAIL_QUOTA_DQACQ_NET                        0xA01
#define OBD_FAIL_QUOTA_EDQUOT       0xA02
#define OBD_FAIL_QUOTA_DELAY_REINT       0xA03
#define OBD_FAIL_QUOTA_RECOVERABLE_ERR   0xA04

#define OBD_FAIL_LPROC_REMOVE       0xB00

#define OBD_FAIL_GENERAL_ALLOC     0xC00

#define OBD_FAIL_SEQ                 0x1000
#define OBD_FAIL_SEQ_QUERY_NET     0x1001
#define OBD_FAIL_SEQ_EXHAUST             0x1002

#define OBD_FAIL_FLD                 0x1100
#define OBD_FAIL_FLD_QUERY_NET     0x1101

#define OBD_FAIL_SEC_CTX                 0x1200
#define OBD_FAIL_SEC_CTX_INIT_NET       0x1201
#define OBD_FAIL_SEC_CTX_INIT_CONT_NET   0x1202
#define OBD_FAIL_SEC_CTX_FINI_NET       0x1203
#define OBD_FAIL_SEC_CTX_HDL_PAUSE       0x1204

#define OBD_FAIL_LLOG                          0x1300
#define OBD_FAIL_LLOG_ORIGIN_CONNECT_NET            0x1301
#define OBD_FAIL_LLOG_ORIGIN_HANDLE_CREATE_NET      0x1302
#define OBD_FAIL_LLOG_ORIGIN_HANDLE_DESTROY_NET     0x1303
#define OBD_FAIL_LLOG_ORIGIN_HANDLE_READ_HEADER_NET 0x1304
#define OBD_FAIL_LLOG_ORIGIN_HANDLE_NEXT_BLOCK_NET  0x1305
#define OBD_FAIL_LLOG_ORIGIN_HANDLE_PREV_BLOCK_NET  0x1306
#define OBD_FAIL_LLOG_ORIGIN_HANDLE_WRITE_REC_NET   0x1307
#define OBD_FAIL_LLOG_ORIGIN_HANDLE_CLOSE_NET       0x1308
#define OBD_FAIL_LLOG_CATINFO_NET                  0x1309
#define OBD_FAIL_MDS_SYNC_CAPA_SL                  0x1310
#define OBD_FAIL_SEQ_ALLOC                        0x1311

#define OBD_FAIL_LLITE                        0x1400
#define OBD_FAIL_LLITE_FAULT_TRUNC_RACE      0x1401
#define OBD_FAIL_LOCK_STATE_WAIT_INTR          0x1402
#define OBD_FAIL_LOV_INIT                           0x1403
#define OBD_FAIL_GLIMPSE_DELAY                      0x1404

#define OBD_FAIL_FID_INDIR      0x1501
#define OBD_FAIL_FID_INLMA      0x1502
#define OBD_FAIL_FID_IGIF       0x1504
#define OBD_FAIL_FID_LOOKUP     0x1505
#define OBD_FAIL_FID_NOLMA      0x1506

/* LFSCK */
#define OBD_FAIL_LFSCK_DELAY1           0x1600
#define OBD_FAIL_LFSCK_DELAY2           0x1601
#define OBD_FAIL_LFSCK_DELAY3           0x1602
#define OBD_FAIL_LFSCK_LINKEA_CRASH     0x1603
#define OBD_FAIL_LFSCK_LINKEA_MORE      0x1604
#define OBD_FAIL_LFSCK_FATAL1           0x1608
#define OBD_FAIL_LFSCK_FATAL2           0x1609
#define OBD_FAIL_LFSCK_CRASH            0x160a
#define OBD_FAIL_LFSCK_NO_AUTO          0x160b
#define OBD_FAIL_LFSCK_NO_DOUBLESCAN    0x160c

/* UPDATE */
#define OBD_FAIL_UPDATE_OBJ_NET                 0x1700
#define OBD_FAIL_UPDATE_OBJ_NET_REP             0x1701


/* Assign references to moved code to reduce code changes */
#define OBD_FAIL_PRECHECK(id)              CFS_FAIL_PRECHECK(id)
#define OBD_FAIL_CHECK(id)                    CFS_FAIL_CHECK(id)
#define OBD_FAIL_CHECK_VALUE(id, value)  CFS_FAIL_CHECK_VALUE(id, value)
#define OBD_FAIL_CHECK_ORSET(id, value)  CFS_FAIL_CHECK_ORSET(id, value)
#define OBD_FAIL_CHECK_RESET(id, value)  CFS_FAIL_CHECK_RESET(id, value)
#define OBD_FAIL_RETURN(id, ret)                CFS_FAIL_RETURN(id, ret)
#define OBD_FAIL_TIMEOUT(id, secs)            CFS_FAIL_TIMEOUT(id, secs)
#define OBD_FAIL_TIMEOUT_MS(id, ms)          CFS_FAIL_TIMEOUT_MS(id, ms)
#define OBD_FAIL_TIMEOUT_ORSET(id, value, secs) CFS_FAIL_TIMEOUT_ORSET(id, value, secs)
#define OBD_RACE(id)                        CFS_RACE(id)
#define OBD_FAIL_ONCE                      CFS_FAIL_ONCE
#define OBD_FAILED                            CFS_FAILED

extern atomic_t libcfs_kmemory;

#ifdef LPROCFS
#define obd_memory_add(size)                                              \
        lprocfs_counter_add(obd_memory, OBD_MEMORY_STAT, (long)(size))
#define obd_memory_sub(size)                                              \
        lprocfs_counter_sub(obd_memory, OBD_MEMORY_STAT, (long)(size))
#define obd_memory_sum()                                                      \
        lprocfs_stats_collector(obd_memory, OBD_MEMORY_STAT,              \
                                LPROCFS_FIELDS_FLAGS_SUM)
#define obd_pages_add(order)                                              \
        lprocfs_counter_add(obd_memory, OBD_MEMORY_PAGES_STAT,          \
                            (long)(1 << (order)))
#define obd_pages_sub(order)                                              \
        lprocfs_counter_sub(obd_memory, OBD_MEMORY_PAGES_STAT,          \
                            (long)(1 << (order)))
#define obd_pages_sum()                                                \
        lprocfs_stats_collector(obd_memory, OBD_MEMORY_PAGES_STAT,          \
                                LPROCFS_FIELDS_FLAGS_SUM)

extern void obd_update_maxusage(void);
extern __u64 obd_memory_max(void);
extern __u64 obd_pages_max(void);

#else

extern __u64 obd_alloc;
extern __u64 obd_pages;

extern __u64 obd_max_alloc;
extern __u64 obd_max_pages;

static inline void obd_memory_add(long size)
{
        obd_alloc += size;
        if (obd_alloc > obd_max_alloc)
                obd_max_alloc = obd_alloc;
}

static inline void obd_memory_sub(long size)
{
        obd_alloc -= size;
}

static inline void obd_pages_add(int order)
{
        obd_pages += 1<< order;
        if (obd_pages > obd_max_pages)
                obd_max_pages = obd_pages;
}

static inline void obd_pages_sub(int order)
{
        obd_pages -= 1<< order;
}

#define obd_memory_sum() (obd_alloc)
#define obd_pages_sum()  (obd_pages)

#define obd_memory_max() (obd_max_alloc)
#define obd_pages_max() (obd_max_pages)

#endif

#define OBD_DEBUG_MEMUSAGE (1)

#if OBD_DEBUG_MEMUSAGE
#define OBD_ALLOC_POST(ptr, size, name)                          \
                obd_memory_add(size);                              \
                CDEBUG(D_MALLOC, name " '" #ptr "': %d at %p.\n",       \
                       (int)(size), ptr)

#define OBD_FREE_PRE(ptr, size, name)                              \
        LASSERT(ptr);                                              \
        obd_memory_sub(size);                                      \
        CDEBUG(D_MALLOC, name " '" #ptr "': %d at %p.\n",              \
               (int)(size), ptr);                                      \
        POISON(ptr, 0x5a, size)

#else /* !OBD_DEBUG_MEMUSAGE */

#define OBD_ALLOC_POST(ptr, size, name) ((void)0)
#define OBD_FREE_PRE(ptr, size, name)   ((void)0)

#endif /* !OBD_DEBUG_MEMUSAGE */

#define HAS_FAIL_ALLOC_FLAG OBD_FAIL_CHECK(OBD_FAIL_GENERAL_ALLOC)

#define OBD_ALLOC_FAIL_BITS 24
#define OBD_ALLOC_FAIL_MASK ((1 << OBD_ALLOC_FAIL_BITS) - 1)
#define OBD_ALLOC_FAIL_MULT (OBD_ALLOC_FAIL_MASK / 100)

#if defined(LUSTRE_UTILS) /* this version is for utils only */
#define __OBD_MALLOC_VERBOSE(ptr, cptab, cpt, size, flags)                    \
do {                                                                          \
        (ptr) = (cptab) == NULL ?                                             \
                kmalloc(size, flags) :                                \
                kmalloc_node(size, flags, cfs_cpt_spread_node(cptab, cpt));   \
        if (unlikely((ptr) == NULL)) {                                  \
                CERROR("kmalloc of '" #ptr "' (%d bytes) failed at %s:%d\n",  \
                       (int)(size), __FILE__, __LINE__);                      \
        } else {                                                              \
                memset(ptr, 0, size);                                         \
                CDEBUG(D_MALLOC, "kmalloced '" #ptr "': %d at %p\n",          \
                       (int)(size), ptr);                                     \
        }                                                                     \
} while (0)

#else /* this version is for the kernel and liblustre */
#define OBD_FREE_RTN0(ptr)                                                  \
({                                                                          \
        kfree(ptr);                                                     \
        (ptr) = NULL;                                                    \
        0;                                                                  \
})

#define __OBD_MALLOC_VERBOSE(ptr, cptab, cpt, size, flags)                    \
do {                                                                          \
        (ptr) = (cptab) == NULL ?                                             \
                kmalloc(size, flags | __GFP_ZERO) :                           \
                kmalloc_node(size, flags | __GFP_ZERO,                        \
                             cfs_cpt_spread_node(cptab, cpt));                \
        if (likely((ptr) != NULL &&                                        \
                   (!HAS_FAIL_ALLOC_FLAG || obd_alloc_fail_rate == 0 ||       \
                    !obd_alloc_fail(ptr, #ptr, "km", size,                  \
                                    __FILE__, __LINE__) ||                  \
                    OBD_FREE_RTN0(ptr)))){                                  \
                OBD_ALLOC_POST(ptr, size, "kmalloced");                \
        }                                                                    \
} while (0)
#endif

#define OBD_ALLOC_GFP(ptr, size, gfp_mask)                                    \
        __OBD_MALLOC_VERBOSE(ptr, NULL, 0, size, gfp_mask)

#define OBD_ALLOC(ptr, size) OBD_ALLOC_GFP(ptr, size, __GFP_IO)
#define OBD_ALLOC_WAIT(ptr, size) OBD_ALLOC_GFP(ptr, size, GFP_IOFS)
#define OBD_ALLOC_PTR(ptr) OBD_ALLOC(ptr, sizeof *(ptr))
#define OBD_ALLOC_PTR_WAIT(ptr) OBD_ALLOC_WAIT(ptr, sizeof *(ptr))

#define OBD_CPT_ALLOC_GFP(ptr, cptab, cpt, size, gfp_mask)                    \
        __OBD_MALLOC_VERBOSE(ptr, cptab, cpt, size, gfp_mask)

#define OBD_CPT_ALLOC(ptr, cptab, cpt, size)                                  \
        OBD_CPT_ALLOC_GFP(ptr, cptab, cpt, size, __GFP_IO)

#define OBD_CPT_ALLOC_PTR(ptr, cptab, cpt)                                    \
        OBD_CPT_ALLOC(ptr, cptab, cpt, sizeof *(ptr))

# define __OBD_VMALLOC_VEROBSE(ptr, cptab, cpt, size)                         \
do {                                                                          \
        (ptr) = cptab == NULL ?                                               \
                vzalloc(size) :                                               \
                vzalloc_node(size, cfs_cpt_spread_node(cptab, cpt));          \
        if (unlikely((ptr) == NULL)) {                                  \
                CERROR("vmalloc of '" #ptr "' (%d bytes) failed\n",        \
                       (int)(size));                                      \
                CERROR(LPU64" total bytes allocated by Lustre, %d by LNET\n", \
                       obd_memory_sum(), atomic_read(&libcfs_kmemory));   \
        } else {                                                              \
                OBD_ALLOC_POST(ptr, size, "vmalloced");                \
        }                                                                    \
} while(0)

# define OBD_VMALLOC(ptr, size)                                               \
         __OBD_VMALLOC_VEROBSE(ptr, NULL, 0, size)
# define OBD_CPT_VMALLOC(ptr, cptab, cpt, size)                               \
         __OBD_VMALLOC_VEROBSE(ptr, cptab, cpt, size)


/* Allocations above this size are considered too big and could not be done
 * atomically.
 *
 * Be very careful when changing this value, especially when decreasing it,
 * since vmalloc in Linux doesn't perform well on multi-cores system, calling
 * vmalloc in critical path would hurt peformance badly. See LU-66.
 */
#define OBD_ALLOC_BIG (4 * PAGE_CACHE_SIZE)

#define OBD_ALLOC_LARGE(ptr, size)                                          \
do {                                                                      \
        if (size > OBD_ALLOC_BIG)                                            \
                OBD_VMALLOC(ptr, size);                                \
        else                                                              \
                OBD_ALLOC(ptr, size);                                    \
} while (0)

#define OBD_CPT_ALLOC_LARGE(ptr, cptab, cpt, size)                            \
do {                                                                          \
        if (size > OBD_ALLOC_BIG)                                             \
                OBD_CPT_VMALLOC(ptr, cptab, cpt, size);                       \
        else                                                                  \
                OBD_CPT_ALLOC(ptr, cptab, cpt, size);                         \
} while (0)

#define OBD_FREE_LARGE(ptr, size)                                            \
do {                                                                      \
        if (size > OBD_ALLOC_BIG)                                            \
                OBD_VFREE(ptr, size);                                    \
        else                                                              \
                OBD_FREE(ptr, size);                                      \
} while (0)


#ifdef CONFIG_DEBUG_SLAB
#define POISON(ptr, c, s) do {} while (0)
#define POISON_PTR(ptr)  ((void)0)
#else
#define POISON(ptr, c, s) memset(ptr, c, s)
#define POISON_PTR(ptr)  (ptr) = (void *)0xdeadbeef
#endif

#ifdef POISON_BULK
#define POISON_PAGE(page, val) do { memset(kmap(page), val, PAGE_CACHE_SIZE);   \
                                    kunmap(page); } while (0)
#else
#define POISON_PAGE(page, val) do { } while (0)
#endif

#define OBD_FREE(ptr, size)                                                \
do {                                                                      \
        OBD_FREE_PRE(ptr, size, "kfreed");                                  \
        kfree(ptr);                                                     \
        POISON_PTR(ptr);                                                      \
} while(0)


#define OBD_FREE_RCU(ptr, size, handle)                                       \
do {                                                                          \
        struct portals_handle *__h = (handle);                                \
                                                                              \
        LASSERT(handle != NULL);                                              \
        __h->h_cookie = (unsigned long)(ptr);                                 \
        __h->h_size = (size);                                                 \
        call_rcu(&__h->h_rcu, class_handle_free_cb);                          \
        POISON_PTR(ptr);                                                      \
} while(0)


#define OBD_VFREE(ptr, size)                            \
        do {                                            \
                OBD_FREE_PRE(ptr, size, "vfreed");      \
                vfree(ptr);                     \
                POISON_PTR(ptr);                        \
        } while (0)

/* we memset() the slab object to 0 when allocation succeeds, so DO NOT
 * HAVE A CTOR THAT DOES ANYTHING.  its work will be cleared here.  we'd
 * love to assert on that, but slab.c keeps kmem_cache_s all to itself. */
#define OBD_SLAB_FREE_RTN0(ptr, slab)                                    \
({                                                                          \
        kmem_cache_free((slab), (ptr));                             \
        (ptr) = NULL;                                                    \
        0;                                                                  \
})

#define __OBD_SLAB_ALLOC_VERBOSE(ptr, slab, cptab, cpt, size, type)           \
do {                                                                          \
        LASSERT(ergo((type) != GFP_ATOMIC, !in_interrupt()));         \
        (ptr) = (cptab) == NULL ?                                             \
                kmem_cache_alloc(slab, type | __GFP_ZERO) :             \
                kmem_cache_alloc_node(slab, type | __GFP_ZERO,          \
                                      cfs_cpt_spread_node(cptab, cpt)); \
        if (likely((ptr) != NULL &&                                        \
                   (!HAS_FAIL_ALLOC_FLAG || obd_alloc_fail_rate == 0 ||       \
                    !obd_alloc_fail(ptr, #ptr, "slab-", size,            \
                                    __FILE__, __LINE__) ||                  \
                    OBD_SLAB_FREE_RTN0(ptr, slab)))) {                  \
                OBD_ALLOC_POST(ptr, size, "slab-alloced");                  \
        }                                                                    \
} while(0)

#define OBD_SLAB_ALLOC_GFP(ptr, slab, size, flags)                            \
        __OBD_SLAB_ALLOC_VERBOSE(ptr, slab, NULL, 0, size, flags)
#define OBD_SLAB_CPT_ALLOC_GFP(ptr, slab, cptab, cpt, size, flags)            \
        __OBD_SLAB_ALLOC_VERBOSE(ptr, slab, cptab, cpt, size, flags)

#define OBD_FREE_PTR(ptr) OBD_FREE(ptr, sizeof *(ptr))

#define OBD_SLAB_FREE(ptr, slab, size)                                  \
do {                                                                      \
        OBD_FREE_PRE(ptr, size, "slab-freed");                          \
        kmem_cache_free(slab, ptr);                                     \
        POISON_PTR(ptr);                                                      \
} while(0)

#define OBD_SLAB_ALLOC(ptr, slab, size)                                       \
        OBD_SLAB_ALLOC_GFP(ptr, slab, size, __GFP_IO)

#define OBD_SLAB_CPT_ALLOC(ptr, slab, cptab, cpt, size)                       \
        OBD_SLAB_CPT_ALLOC_GFP(ptr, slab, cptab, cpt, size, __GFP_IO)

#define OBD_SLAB_ALLOC_PTR(ptr, slab)                                         \
        OBD_SLAB_ALLOC(ptr, slab, sizeof *(ptr))

#define OBD_SLAB_CPT_ALLOC_PTR(ptr, slab, cptab, cpt)                         \
        OBD_SLAB_CPT_ALLOC(ptr, slab, cptab, cpt, sizeof *(ptr))

#define OBD_SLAB_ALLOC_PTR_GFP(ptr, slab, flags)                              \
        OBD_SLAB_ALLOC_GFP(ptr, slab, sizeof *(ptr), flags)

#define OBD_SLAB_CPT_ALLOC_PTR_GFP(ptr, slab, cptab, cpt, flags)                      \
        OBD_SLAB_CPT_ALLOC_GFP(ptr, slab, cptab, cpt, sizeof *(ptr), flags)

#define OBD_SLAB_FREE_PTR(ptr, slab)                                          \
        OBD_SLAB_FREE((ptr), (slab), sizeof *(ptr))

#define KEY_IS(str) \
        (keylen >= (sizeof(str)-1) && memcmp(key, str, (sizeof(str)-1)) == 0)

/* Wrapper for contiguous page frame allocation */
#define __OBD_PAGE_ALLOC_VERBOSE(ptr, cptab, cpt, gfp_mask)                   \
do {                                                                          \
        (ptr) = (cptab) == NULL ?                                             \
                alloc_page(gfp_mask) :                                \
                alloc_pages_node(cfs_cpt_spread_node(cptab, cpt), gfp_mask, 0);\
        if (unlikely((ptr) == NULL)) {                                  \
                CERROR("alloc_pages of '" #ptr "' %d page(s) / "LPU64" bytes "\
                       "failed\n", (int)1,                                  \
                       (__u64)(1 << PAGE_CACHE_SHIFT));                  \
                CERROR(LPU64" total bytes and "LPU64" total pages "        \
                       "("LPU64" bytes) allocated by Lustre, "          \
                       "%d total bytes by LNET\n",                          \
                       obd_memory_sum(),                                      \
                       obd_pages_sum() << PAGE_CACHE_SHIFT,                  \
                       obd_pages_sum(),                                \
                       atomic_read(&libcfs_kmemory));                \
        } else {                                                              \
                obd_pages_add(0);                                            \
                CDEBUG(D_MALLOC, "alloc_pages '" #ptr "': %d page(s) / "      \
                       LPU64" bytes at %p.\n",                          \
                       (int)1,                                          \
                       (__u64)(1 << PAGE_CACHE_SHIFT), ptr);                \
        }                                                                    \
} while (0)

#define OBD_PAGE_ALLOC(ptr, gfp_mask)                                         \
        __OBD_PAGE_ALLOC_VERBOSE(ptr, NULL, 0, gfp_mask)
#define OBD_PAGE_CPT_ALLOC(ptr, cptab, cpt, gfp_mask)                         \
        __OBD_PAGE_ALLOC_VERBOSE(ptr, cptab, cpt, gfp_mask)

#define OBD_PAGE_FREE(ptr)                                                  \
do {                                                                      \
        LASSERT(ptr);                                                    \
        obd_pages_sub(0);                                                    \
        CDEBUG(D_MALLOC, "free_pages '" #ptr "': %d page(s) / "LPU64" bytes " \
               "at %p.\n",                                                  \
               (int)1, (__u64)(1 << PAGE_CACHE_SHIFT),                    \
               ptr);                                                      \
        __free_page(ptr);                                                  \
        (ptr) = (void *)0xdeadbeef;                                        \
} while (0)

#endif