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[fs/lustre-release.git] / 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 #define OBD_FAIL_MDS_DONE_WRITING_NET    0x126
201 #define OBD_FAIL_MDS_DONE_WRITING_PACK   0x127
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 #define OBD_FAIL_MDS_QUOTACHECK_NET      0x12d
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
250 /* layout lock */
251 #define OBD_FAIL_MDS_NO_LL_GETATTR       0x170
252 #define OBD_FAIL_MDS_NO_LL_OPEN          0x171
253 #define OBD_FAIL_MDS_LL_BLOCK            0x172
254
255 /* CMD */
256 #define OBD_FAIL_MDS_IS_SUBDIR_NET       0x180
257 #define OBD_FAIL_MDS_IS_SUBDIR_PACK      0x181
258 #define OBD_FAIL_MDS_SET_INFO_NET        0x182
259 #define OBD_FAIL_MDS_WRITEPAGE_NET       0x183
260 #define OBD_FAIL_MDS_WRITEPAGE_PACK      0x184
261 #define OBD_FAIL_MDS_RECOVERY_ACCEPTS_GAPS 0x185
262 #define OBD_FAIL_MDS_GET_INFO_NET        0x186
263 #define OBD_FAIL_MDS_DQACQ_NET           0x187
264
265 /* OI scrub */
266 #define OBD_FAIL_OSD_SCRUB_DELAY                        0x190
267 #define OBD_FAIL_OSD_SCRUB_CRASH                        0x191
268 #define OBD_FAIL_OSD_SCRUB_FATAL                        0x192
269 #define OBD_FAIL_OSD_FID_MAPPING                        0x193
270 #define OBD_FAIL_OSD_LMA_INCOMPAT                       0x194
271 #define OBD_FAIL_OSD_COMPAT_INVALID_ENTRY               0x195
272 #define OBD_FAIL_OSD_COMPAT_NO_ENTRY                    0x196
273
274 #define OBD_FAIL_OST                     0x200
275 #define OBD_FAIL_OST_CONNECT_NET         0x201
276 #define OBD_FAIL_OST_DISCONNECT_NET      0x202
277 #define OBD_FAIL_OST_GET_INFO_NET        0x203
278 #define OBD_FAIL_OST_CREATE_NET          0x204
279 #define OBD_FAIL_OST_DESTROY_NET         0x205
280 #define OBD_FAIL_OST_GETATTR_NET         0x206
281 #define OBD_FAIL_OST_SETATTR_NET         0x207
282 #define OBD_FAIL_OST_OPEN_NET            0x208
283 #define OBD_FAIL_OST_CLOSE_NET           0x209
284 #define OBD_FAIL_OST_BRW_NET             0x20a
285 #define OBD_FAIL_OST_PUNCH_NET           0x20b
286 #define OBD_FAIL_OST_STATFS_NET          0x20c
287 #define OBD_FAIL_OST_HANDLE_UNPACK       0x20d
288 #define OBD_FAIL_OST_BRW_WRITE_BULK      0x20e
289 #define OBD_FAIL_OST_BRW_READ_BULK       0x20f
290 #define OBD_FAIL_OST_SYNC_NET            0x210
291 #define OBD_FAIL_OST_ALL_REPLY_NET       0x211
292 #define OBD_FAIL_OST_ALL_REQUEST_NET     0x212
293 #define OBD_FAIL_OST_LDLM_REPLY_NET      0x213
294 #define OBD_FAIL_OST_BRW_PAUSE_BULK      0x214
295 #define OBD_FAIL_OST_ENOSPC              0x215
296 #define OBD_FAIL_OST_EROFS               0x216
297 #define OBD_FAIL_OST_ENOENT              0x217
298 #define OBD_FAIL_OST_QUOTACHECK_NET      0x218
299 #define OBD_FAIL_OST_QUOTACTL_NET        0x219
300 #define OBD_FAIL_OST_CHECKSUM_RECEIVE    0x21a
301 #define OBD_FAIL_OST_CHECKSUM_SEND       0x21b
302 #define OBD_FAIL_OST_BRW_SIZE            0x21c
303 #define OBD_FAIL_OST_DROP_REQ            0x21d
304 #define OBD_FAIL_OST_SETATTR_CREDITS     0x21e
305 #define OBD_FAIL_OST_HOLD_WRITE_RPC      0x21f
306 #define OBD_FAIL_OST_BRW_WRITE_BULK2     0x220
307 #define OBD_FAIL_OST_LLOG_RECOVERY_TIMEOUT 0x221
308 #define OBD_FAIL_OST_CANCEL_COOKIE_TIMEOUT 0x222
309 #define OBD_FAIL_OST_PAUSE_CREATE        0x223
310 #define OBD_FAIL_OST_BRW_PAUSE_PACK      0x224
311 #define OBD_FAIL_OST_CONNECT_NET2        0x225
312 #define OBD_FAIL_OST_NOMEM               0x226
313 #define OBD_FAIL_OST_BRW_PAUSE_BULK2     0x227
314 #define OBD_FAIL_OST_MAPBLK_ENOSPC       0x228
315 #define OBD_FAIL_OST_ENOINO              0x229
316 #define OBD_FAIL_OST_DQACQ_NET           0x230
317 #define OBD_FAIL_OST_STATFS_EINPROGRESS  0x231
318 #define OBD_FAIL_OST_SET_INFO_NET        0x232
319 #define OBD_FAIL_OST_NODESTROY           0x233
320
321 #define OBD_FAIL_LDLM                    0x300
322 #define OBD_FAIL_LDLM_NAMESPACE_NEW      0x301
323 #define OBD_FAIL_LDLM_ENQUEUE_NET                       0x302
324 #define OBD_FAIL_LDLM_CONVERT_NET                       0x303
325 #define OBD_FAIL_LDLM_CANCEL_NET                        0x304
326 #define OBD_FAIL_LDLM_BL_CALLBACK_NET                   0x305
327 #define OBD_FAIL_LDLM_CP_CALLBACK_NET                   0x306
328 #define OBD_FAIL_LDLM_GL_CALLBACK_NET                   0x307
329 #define OBD_FAIL_LDLM_ENQUEUE_EXTENT_ERR 0x308
330 #define OBD_FAIL_LDLM_ENQUEUE_INTENT_ERR 0x309
331 #define OBD_FAIL_LDLM_CREATE_RESOURCE    0x30a
332 #define OBD_FAIL_LDLM_ENQUEUE_BLOCKED    0x30b
333 #define OBD_FAIL_LDLM_REPLY              0x30c
334 #define OBD_FAIL_LDLM_RECOV_CLIENTS      0x30d
335 #define OBD_FAIL_LDLM_ENQUEUE_OLD_EXPORT 0x30e
336 #define OBD_FAIL_LDLM_GLIMPSE            0x30f
337 #define OBD_FAIL_LDLM_CANCEL_RACE        0x310
338 #define OBD_FAIL_LDLM_CANCEL_EVICT_RACE  0x311
339 #define OBD_FAIL_LDLM_PAUSE_CANCEL       0x312
340 #define OBD_FAIL_LDLM_CLOSE_THREAD       0x313
341 #define OBD_FAIL_LDLM_CANCEL_BL_CB_RACE  0x314
342 #define OBD_FAIL_LDLM_CP_CB_WAIT         0x315
343 #define OBD_FAIL_LDLM_OST_FAIL_RACE      0x316
344 #define OBD_FAIL_LDLM_INTR_CP_AST        0x317
345 #define OBD_FAIL_LDLM_CP_BL_RACE         0x318
346 #define OBD_FAIL_LDLM_NEW_LOCK           0x319
347 #define OBD_FAIL_LDLM_AGL_DELAY          0x31a
348 #define OBD_FAIL_LDLM_AGL_NOLOCK         0x31b
349 #define OBD_FAIL_LDLM_OST_LVB            0x31c
350 #define OBD_FAIL_LDLM_ENQUEUE_HANG       0x31d
351 #define OBD_FAIL_LDLM_PAUSE_CANCEL2      0x31f
352 #define OBD_FAIL_LDLM_CP_CB_WAIT2        0x320
353 #define OBD_FAIL_LDLM_CP_CB_WAIT3        0x321
354 #define OBD_FAIL_LDLM_CP_CB_WAIT4        0x322
355 #define OBD_FAIL_LDLM_CP_CB_WAIT5        0x323
356
357 /* LOCKLESS IO */
358 #define OBD_FAIL_LDLM_SET_CONTENTION     0x385
359
360 #define OBD_FAIL_OSC                     0x400
361 #define OBD_FAIL_OSC_BRW_READ_BULK       0x401
362 #define OBD_FAIL_OSC_BRW_WRITE_BULK      0x402
363 #define OBD_FAIL_OSC_LOCK_BL_AST         0x403
364 #define OBD_FAIL_OSC_LOCK_CP_AST         0x404
365 #define OBD_FAIL_OSC_MATCH               0x405
366 #define OBD_FAIL_OSC_BRW_PREP_REQ        0x406
367 #define OBD_FAIL_OSC_SHUTDOWN            0x407
368 #define OBD_FAIL_OSC_CHECKSUM_RECEIVE    0x408
369 #define OBD_FAIL_OSC_CHECKSUM_SEND       0x409
370 #define OBD_FAIL_OSC_BRW_PREP_REQ2       0x40a
371 #define OBD_FAIL_OSC_CONNECT_CKSUM       0x40b
372 #define OBD_FAIL_OSC_CKSUM_ADLER_ONLY    0x40c
373 #define OBD_FAIL_OSC_DIO_PAUSE           0x40d
374 #define OBD_FAIL_OSC_OBJECT_CONTENTION   0x40e
375 #define OBD_FAIL_OSC_CP_CANCEL_RACE      0x40f
376 #define OBD_FAIL_OSC_CP_ENQ_RACE         0x410
377 #define OBD_FAIL_OSC_NO_GRANT            0x411
378 #define OBD_FAIL_OSC_DELAY_SETTIME       0x412
379
380 #define OBD_FAIL_PTLRPC                  0x500
381 #define OBD_FAIL_PTLRPC_ACK              0x501
382 #define OBD_FAIL_PTLRPC_RQBD             0x502
383 #define OBD_FAIL_PTLRPC_BULK_GET_NET     0x503
384 #define OBD_FAIL_PTLRPC_BULK_PUT_NET     0x504
385 #define OBD_FAIL_PTLRPC_DROP_RPC         0x505
386 #define OBD_FAIL_PTLRPC_DELAY_SEND       0x506
387 #define OBD_FAIL_PTLRPC_DELAY_RECOV      0x507
388 #define OBD_FAIL_PTLRPC_CLIENT_BULK_CB   0x508
389 #define OBD_FAIL_PTLRPC_PAUSE_REQ        0x50a
390 #define OBD_FAIL_PTLRPC_PAUSE_REP        0x50c
391 #define OBD_FAIL_PTLRPC_IMP_DEACTIVE     0x50d
392 #define OBD_FAIL_PTLRPC_DUMP_LOG         0x50e
393 #define OBD_FAIL_PTLRPC_LONG_REPL_UNLINK 0x50f
394 #define OBD_FAIL_PTLRPC_LONG_BULK_UNLINK 0x510
395 #define OBD_FAIL_PTLRPC_HPREQ_TIMEOUT    0x511
396 #define OBD_FAIL_PTLRPC_HPREQ_NOTIMEOUT  0x512
397 #define OBD_FAIL_PTLRPC_DROP_REQ_OPC     0x513
398 #define OBD_FAIL_PTLRPC_FINISH_REPLAY    0x514
399 #define OBD_FAIL_PTLRPC_CLIENT_BULK_CB2  0x515
400 #define OBD_FAIL_PTLRPC_DELAY_IMP_FULL   0x516
401 #define OBD_FAIL_PTLRPC_CANCEL_RESEND    0x517
402
403 #define OBD_FAIL_OBD_PING_NET            0x600
404 #define OBD_FAIL_OBD_LOG_CANCEL_NET      0x601
405 #define OBD_FAIL_OBD_LOGD_NET            0x602
406 #define OBD_FAIL_OBD_QC_CALLBACK_NET     0x603
407 #define OBD_FAIL_OBD_DQACQ               0x604
408 #define OBD_FAIL_OBD_LLOG_SETUP          0x605
409 #define OBD_FAIL_OBD_LOG_CANCEL_REP      0x606
410 #define OBD_FAIL_OBD_IDX_READ_NET        0x607
411 #define OBD_FAIL_OBD_IDX_READ_BREAK      0x608
412 #define OBD_FAIL_OBD_NO_LRU              0x609
413
414 #define OBD_FAIL_TGT_REPLY_NET           0x700
415 #define OBD_FAIL_TGT_CONN_RACE           0x701
416 #define OBD_FAIL_TGT_FORCE_RECONNECT     0x702
417 #define OBD_FAIL_TGT_DELAY_CONNECT       0x703
418 #define OBD_FAIL_TGT_DELAY_RECONNECT     0x704
419 #define OBD_FAIL_TGT_DELAY_PRECREATE     0x705
420 #define OBD_FAIL_TGT_TOOMANY_THREADS     0x706
421 #define OBD_FAIL_TGT_REPLAY_DROP         0x707
422 #define OBD_FAIL_TGT_FAKE_EXP            0x708
423 #define OBD_FAIL_TGT_REPLAY_DELAY        0x709
424 #define OBD_FAIL_TGT_LAST_REPLAY         0x710
425 #define OBD_FAIL_TGT_CLIENT_ADD          0x711
426 #define OBD_FAIL_TGT_RCVG_FLAG           0x712
427 #define OBD_FAIL_TGT_DELAY_CONDITIONAL   0x713
428 #define OBD_FAIL_TGT_REPLAY_DELAY2       0x714
429 #define OBD_FAIL_TGT_REPLAY_RECONNECT    0x715
430
431 #define OBD_FAIL_MDC_REVALIDATE_PAUSE    0x800
432 #define OBD_FAIL_MDC_ENQUEUE_PAUSE       0x801
433 #define OBD_FAIL_MDC_OLD_EXT_FLAGS       0x802
434 #define OBD_FAIL_MDC_GETATTR_ENQUEUE     0x803
435 #define OBD_FAIL_MDC_RPCS_SEM            0x804
436 #define OBD_FAIL_MDC_LIGHTWEIGHT         0x805
437
438 #define OBD_FAIL_MGS                     0x900
439 #define OBD_FAIL_MGS_ALL_REQUEST_NET     0x901
440 #define OBD_FAIL_MGS_ALL_REPLY_NET       0x902
441 #define OBD_FAIL_MGC_PAUSE_PROCESS_LOG   0x903
442 #define OBD_FAIL_MGS_PAUSE_REQ           0x904
443 #define OBD_FAIL_MGS_PAUSE_TARGET_REG    0x905
444 #define OBD_FAIL_MGS_CONNECT_NET         0x906
445 #define OBD_FAIL_MGS_DISCONNECT_NET      0x907
446 #define OBD_FAIL_MGS_SET_INFO_NET        0x908
447 #define OBD_FAIL_MGS_EXCEPTION_NET       0x909
448 #define OBD_FAIL_MGS_TARGET_REG_NET      0x90a
449 #define OBD_FAIL_MGS_TARGET_DEL_NET      0x90b
450 #define OBD_FAIL_MGS_CONFIG_READ_NET     0x90c
451
452 #define OBD_FAIL_QUOTA_DQACQ_NET                        0xA01
453 #define OBD_FAIL_QUOTA_EDQUOT            0xA02
454 #define OBD_FAIL_QUOTA_DELAY_REINT       0xA03
455 #define OBD_FAIL_QUOTA_RECOVERABLE_ERR   0xA04
456
457 #define OBD_FAIL_LPROC_REMOVE            0xB00
458
459 #define OBD_FAIL_GENERAL_ALLOC           0xC00
460
461 #define OBD_FAIL_SEQ                     0x1000
462 #define OBD_FAIL_SEQ_QUERY_NET           0x1001
463 #define OBD_FAIL_SEQ_EXHAUST             0x1002
464
465 #define OBD_FAIL_FLD                     0x1100
466 #define OBD_FAIL_FLD_QUERY_NET           0x1101
467 #define OBD_FAIL_FLD_READ_NET            0x1102
468
469 #define OBD_FAIL_SEC_CTX                 0x1200
470 #define OBD_FAIL_SEC_CTX_INIT_NET        0x1201
471 #define OBD_FAIL_SEC_CTX_INIT_CONT_NET   0x1202
472 #define OBD_FAIL_SEC_CTX_FINI_NET        0x1203
473 #define OBD_FAIL_SEC_CTX_HDL_PAUSE       0x1204
474
475 #define OBD_FAIL_LLOG                               0x1300
476 #define OBD_FAIL_LLOG_ORIGIN_CONNECT_NET            0x1301
477 #define OBD_FAIL_LLOG_ORIGIN_HANDLE_CREATE_NET      0x1302
478 #define OBD_FAIL_LLOG_ORIGIN_HANDLE_DESTROY_NET     0x1303
479 #define OBD_FAIL_LLOG_ORIGIN_HANDLE_READ_HEADER_NET 0x1304
480 #define OBD_FAIL_LLOG_ORIGIN_HANDLE_NEXT_BLOCK_NET  0x1305
481 #define OBD_FAIL_LLOG_ORIGIN_HANDLE_PREV_BLOCK_NET  0x1306
482 #define OBD_FAIL_LLOG_ORIGIN_HANDLE_WRITE_REC_NET   0x1307
483 #define OBD_FAIL_LLOG_ORIGIN_HANDLE_CLOSE_NET       0x1308
484 #define OBD_FAIL_LLOG_CATINFO_NET                   0x1309
485 #define OBD_FAIL_MDS_SYNC_CAPA_SL                   0x1310
486 #define OBD_FAIL_SEQ_ALLOC                          0x1311
487
488 #define OBD_FAIL_LLITE                              0x1400
489 #define OBD_FAIL_LLITE_FAULT_TRUNC_RACE             0x1401
490 #define OBD_FAIL_LOCK_STATE_WAIT_INTR               0x1402
491 #define OBD_FAIL_LOV_INIT                           0x1403
492 #define OBD_FAIL_GLIMPSE_DELAY                      0x1404
493 #define OBD_FAIL_LLITE_XATTR_ENOMEM                 0x1405
494
495 #define OBD_FAIL_FID_INDIR      0x1501
496 #define OBD_FAIL_FID_INLMA      0x1502
497 #define OBD_FAIL_FID_IGIF       0x1504
498 #define OBD_FAIL_FID_LOOKUP     0x1505
499 #define OBD_FAIL_FID_NOLMA      0x1506
500
501 /* LFSCK */
502 #define OBD_FAIL_LFSCK_DELAY1           0x1600
503 #define OBD_FAIL_LFSCK_DELAY2           0x1601
504 #define OBD_FAIL_LFSCK_DELAY3           0x1602
505 #define OBD_FAIL_LFSCK_LINKEA_CRASH     0x1603
506 #define OBD_FAIL_LFSCK_LINKEA_MORE      0x1604
507 #define OBD_FAIL_LFSCK_LINKEA_MORE2     0x1605
508 #define OBD_FAIL_LFSCK_FATAL1           0x1608
509 #define OBD_FAIL_LFSCK_FATAL2           0x1609
510 #define OBD_FAIL_LFSCK_CRASH            0x160a
511 #define OBD_FAIL_LFSCK_NO_AUTO          0x160b
512 #define OBD_FAIL_LFSCK_NO_DOUBLESCAN    0x160c
513 #define OBD_FAIL_LFSCK_SKIP_LASTID      0x160d
514 #define OBD_FAIL_LFSCK_DELAY4           0x160e
515 #define OBD_FAIL_LFSCK_BAD_LMMOI        0x160f
516 #define OBD_FAIL_LFSCK_DANGLING         0x1610
517 #define OBD_FAIL_LFSCK_UNMATCHED_PAIR1  0x1611
518 #define OBD_FAIL_LFSCK_UNMATCHED_PAIR2  0x1612
519 #define OBD_FAIL_LFSCK_BAD_OWNER        0x1613
520 #define OBD_FAIL_LFSCK_MULTIPLE_REF     0x1614
521 #define OBD_FAIL_LFSCK_LOST_STRIPE      0x1615
522 #define OBD_FAIL_LFSCK_LOST_MDTOBJ      0x1616
523 #define OBD_FAIL_LFSCK_NOPFID           0x1617
524 #define OBD_FAIL_LFSCK_CHANGE_STRIPE    0x1618
525 #define OBD_FAIL_LFSCK_INVALID_PFID     0x1619
526 #define OBD_FAIL_LFSCK_LOST_SPEOBJ      0x161a
527 #define OBD_FAIL_LFSCK_DELAY5           0x161b
528 #define OBD_FAIL_LFSCK_BAD_NETWORK      0x161c
529 #define OBD_FAIL_LFSCK_NO_LINKEA        0x161d
530 #define OBD_FAIL_LFSCK_BAD_PARENT       0x161e
531 #define OBD_FAIL_LFSCK_DANGLING2        0x1620
532 #define OBD_FAIL_LFSCK_DANGLING3        0x1621
533 #define OBD_FAIL_LFSCK_MUL_REF          0x1622
534 #define OBD_FAIL_LFSCK_BAD_TYPE         0x1623
535 #define OBD_FAIL_LFSCK_NO_NAMEENTRY     0x1624
536 #define OBD_FAIL_LFSCK_MORE_NLINK       0x1625
537 #define OBD_FAIL_LFSCK_LESS_NLINK       0x1626
538 #define OBD_FAIL_LFSCK_LINKEA_OVERFLOW  0x1627
539 #define OBD_FAIL_LFSCK_BAD_NAME_HASH    0x1628
540 #define OBD_FAIL_LFSCK_LOST_MASTER_LMV  0x1629
541 #define OBD_FAIL_LFSCK_LOST_SLAVE_LMV   0x162a
542 #define OBD_FAIL_LFSCK_BAD_SLAVE_LMV    0x162b
543 #define OBD_FAIL_LFSCK_BAD_SLAVE_NAME   0x162c
544
545 #define OBD_FAIL_LFSCK_NOTIFY_NET       0x16f0
546 #define OBD_FAIL_LFSCK_QUERY_NET        0x16f1
547
548 /* UPDATE */
549 #define OBD_FAIL_OUT_UPDATE_NET         0x1700
550 #define OBD_FAIL_OUT_UPDATE_NET_REP     0x1701
551
552 /* MIGRATE */
553 #define OBD_FAIL_MIGRATE_NET_REP                0x1800
554 #define OBD_FAIL_MIGRATE_ENTRIES                0x1801
555 #define OBD_FAIL_MIGRATE_LINKEA                 0x1802
556
557 /* LMV */
558 #define OBD_FAIL_UNKNOWN_LMV_STRIPE             0x1901
559
560 /* DT */
561 #define OBD_FAIL_DT_DECLARE_ATTR_GET            0x2000
562 #define OBD_FAIL_DT_ATTR_GET                    0x2001
563 #define OBD_FAIL_DT_DECLARE_ATTR_SET            0x2002
564 #define OBD_FAIL_DT_ATTR_SET                    0x2003
565 #define OBD_FAIL_DT_DECLARE_XATTR_GET           0x2004
566 #define OBD_FAIL_DT_XATTR_GET                   0x2005
567 #define OBD_FAIL_DT_DECLARE_XATTR_SET           0x2006
568 #define OBD_FAIL_DT_XATTR_SET                   0x2007
569 #define OBD_FAIL_DT_DECLARE_XATTR_DEL           0x2008
570 #define OBD_FAIL_DT_XATTR_DEL                   0x2009
571 #define OBD_FAIL_DT_XATTR_LIST                  0x200a
572 #define OBD_FAIL_DT_DECLARE_CREATE              0x200b
573 #define OBD_FAIL_DT_CREATE                      0x200c
574 #define OBD_FAIL_DT_DECLARE_DESTROY             0x200d
575 #define OBD_FAIL_DT_DESTROY                     0x200e
576 #define OBD_FAIL_DT_INDEX_TRY                   0x200f
577 #define OBD_FAIL_DT_DECLARE_REF_ADD             0x2010
578 #define OBD_FAIL_DT_REF_ADD                     0x2011
579 #define OBD_FAIL_DT_DECLARE_REF_DEL             0x2012
580 #define OBD_FAIL_DT_REF_DEL                     0x2013
581 #define OBD_FAIL_DT_DECLARE_INSERT              0x2014
582 #define OBD_FAIL_DT_INSERT                      0x2015
583 #define OBD_FAIL_DT_DECLARE_DELETE              0x2016
584 #define OBD_FAIL_DT_DELETE                      0x2017
585 #define OBD_FAIL_DT_LOOKUP                      0x2018
586
587 /* Assign references to moved code to reduce code changes */
588 #define OBD_FAIL_PRECHECK(id)                   CFS_FAIL_PRECHECK(id)
589 #define OBD_FAIL_CHECK(id)                      CFS_FAIL_CHECK(id)
590 #define OBD_FAIL_CHECK_VALUE(id, value)         CFS_FAIL_CHECK_VALUE(id, value)
591 #define OBD_FAIL_CHECK_ORSET(id, value)         CFS_FAIL_CHECK_ORSET(id, value)
592 #define OBD_FAIL_CHECK_RESET(id, value)         CFS_FAIL_CHECK_RESET(id, value)
593 #define OBD_FAIL_RETURN(id, ret)                CFS_FAIL_RETURN(id, ret)
594 #define OBD_FAIL_TIMEOUT(id, secs)              CFS_FAIL_TIMEOUT(id, secs)
595 #define OBD_FAIL_TIMEOUT_MS(id, ms)             CFS_FAIL_TIMEOUT_MS(id, ms)
596 #define OBD_FAIL_TIMEOUT_ORSET(id, value, secs) CFS_FAIL_TIMEOUT_ORSET(id, value, secs)
597 #define OBD_RACE(id)                            CFS_RACE(id)
598 #define OBD_FAIL_ONCE                           CFS_FAIL_ONCE
599 #define OBD_FAILED                              CFS_FAILED
600
601 extern atomic_t libcfs_kmemory;
602
603 #ifdef CONFIG_PROC_FS
604 #define obd_memory_add(size)                                                  \
605         lprocfs_counter_add(obd_memory, OBD_MEMORY_STAT, (long)(size))
606 #define obd_memory_sub(size)                                                  \
607         lprocfs_counter_sub(obd_memory, OBD_MEMORY_STAT, (long)(size))
608 #define obd_memory_sum()                                                      \
609         lprocfs_stats_collector(obd_memory, OBD_MEMORY_STAT,                  \
610                                 LPROCFS_FIELDS_FLAGS_SUM)
611 #define obd_pages_add(order)                                                  \
612         lprocfs_counter_add(obd_memory, OBD_MEMORY_PAGES_STAT,                \
613                             (long)(1 << (order)))
614 #define obd_pages_sub(order)                                                  \
615         lprocfs_counter_sub(obd_memory, OBD_MEMORY_PAGES_STAT,                \
616                             (long)(1 << (order)))
617 #define obd_pages_sum()                                                       \
618         lprocfs_stats_collector(obd_memory, OBD_MEMORY_PAGES_STAT,            \
619                                 LPROCFS_FIELDS_FLAGS_SUM)
620
621 extern void obd_update_maxusage(void);
622 extern __u64 obd_memory_max(void);
623 extern __u64 obd_pages_max(void);
624
625 #else /* CONFIG_PROC_FS */
626
627 extern __u64 obd_alloc;
628 extern __u64 obd_pages;
629
630 extern __u64 obd_max_alloc;
631 extern __u64 obd_max_pages;
632
633 static inline void obd_memory_add(long size)
634 {
635         obd_alloc += size;
636         if (obd_alloc > obd_max_alloc)
637                 obd_max_alloc = obd_alloc;
638 }
639
640 static inline void obd_memory_sub(long size)
641 {
642         obd_alloc -= size;
643 }
644
645 static inline void obd_pages_add(int order)
646 {
647         obd_pages += 1<< order;
648         if (obd_pages > obd_max_pages)
649                 obd_max_pages = obd_pages;
650 }
651
652 static inline void obd_pages_sub(int order)
653 {
654         obd_pages -= 1<< order;
655 }
656
657 #define obd_memory_sum() (obd_alloc)
658 #define obd_pages_sum()  (obd_pages)
659
660 #define obd_memory_max() (obd_max_alloc)
661 #define obd_pages_max() (obd_max_pages)
662
663 #endif /* !CONFIG_PROC_FS */
664
665 #define OBD_DEBUG_MEMUSAGE (1)
666
667 #if OBD_DEBUG_MEMUSAGE
668 #define OBD_ALLOC_POST(ptr, size, name)                                 \
669                 obd_memory_add(size);                                   \
670                 CDEBUG(D_MALLOC, name " '" #ptr "': %d at %p.\n",       \
671                        (int)(size), ptr)
672
673 #define OBD_FREE_PRE(ptr, size, name)                                   \
674         LASSERT(ptr);                                                   \
675         obd_memory_sub(size);                                           \
676         CDEBUG(D_MALLOC, name " '" #ptr "': %d at %p.\n",               \
677                (int)(size), ptr);                                       \
678         POISON(ptr, 0x5a, size)
679
680 #else /* !OBD_DEBUG_MEMUSAGE */
681
682 #define OBD_ALLOC_POST(ptr, size, name) ((void)0)
683 #define OBD_FREE_PRE(ptr, size, name)   ((void)0)
684
685 #endif /* !OBD_DEBUG_MEMUSAGE */
686
687 #ifdef RANDOM_FAIL_ALLOC
688 #define HAS_FAIL_ALLOC_FLAG OBD_FAIL_CHECK(OBD_FAIL_GENERAL_ALLOC)
689 #else
690 #define HAS_FAIL_ALLOC_FLAG 0
691 #endif
692
693 #define OBD_ALLOC_FAIL_BITS 24
694 #define OBD_ALLOC_FAIL_MASK ((1 << OBD_ALLOC_FAIL_BITS) - 1)
695 #define OBD_ALLOC_FAIL_MULT (OBD_ALLOC_FAIL_MASK / 100)
696
697 #define OBD_FREE_RTN0(ptr)                                                    \
698 ({                                                                            \
699         kfree(ptr);                                                        \
700         (ptr) = NULL;                                                         \
701         0;                                                                    \
702 })
703
704 #define __OBD_MALLOC_VERBOSE(ptr, cptab, cpt, size, flags)                    \
705 do {                                                                          \
706         (ptr) = (cptab) == NULL ?                                             \
707                 kmalloc(size, flags | __GFP_ZERO) :                           \
708                 cfs_cpt_malloc(cptab, cpt, size, flags | __GFP_ZERO);         \
709         if (likely((ptr) != NULL &&                                           \
710                    (!HAS_FAIL_ALLOC_FLAG || obd_alloc_fail_rate == 0 ||       \
711                     !obd_alloc_fail(ptr, #ptr, "km", size,                    \
712                                     __FILE__, __LINE__) ||                    \
713                     OBD_FREE_RTN0(ptr)))){                                    \
714                 OBD_ALLOC_POST(ptr, size, "kmalloced");                       \
715         }                                                                     \
716 } while (0)
717
718 #define OBD_ALLOC_GFP(ptr, size, gfp_mask)                                    \
719         __OBD_MALLOC_VERBOSE(ptr, NULL, 0, size, gfp_mask)
720
721 #define OBD_ALLOC(ptr, size) OBD_ALLOC_GFP(ptr, size, GFP_NOFS)
722 #define OBD_ALLOC_WAIT(ptr, size) OBD_ALLOC_GFP(ptr, size, GFP_KERNEL)
723 #define OBD_ALLOC_PTR(ptr) OBD_ALLOC(ptr, sizeof *(ptr))
724 #define OBD_ALLOC_PTR_WAIT(ptr) OBD_ALLOC_WAIT(ptr, sizeof *(ptr))
725
726 #define OBD_CPT_ALLOC_GFP(ptr, cptab, cpt, size, gfp_mask)                    \
727         __OBD_MALLOC_VERBOSE(ptr, cptab, cpt, size, gfp_mask)
728
729 #define OBD_CPT_ALLOC(ptr, cptab, cpt, size)                                  \
730         OBD_CPT_ALLOC_GFP(ptr, cptab, cpt, size, GFP_NOFS)
731
732 #define OBD_CPT_ALLOC_PTR(ptr, cptab, cpt)                                    \
733         OBD_CPT_ALLOC(ptr, cptab, cpt, sizeof *(ptr))
734
735 /* Direct use of __vmalloc() allows for protection flag specification
736  * (and particularly to not set __GFP_FS, which is likely to cause some
737  * deadlock situations in our code).
738  */
739 #define __OBD_VMALLOC_VERBOSE(ptr, cptab, cpt, size)                          \
740 do {                                                                          \
741         (ptr) = cptab == NULL ?                                               \
742                 __vmalloc(size, GFP_NOFS | __GFP_HIGHMEM | __GFP_ZERO,        \
743                           PAGE_KERNEL) :                                      \
744                 cfs_cpt_vzalloc(cptab, cpt, size);                            \
745         if (unlikely((ptr) == NULL)) {                                        \
746                 CERROR("vmalloc of '" #ptr "' (%d bytes) failed\n",           \
747                        (int)(size));                                          \
748                 CERROR(LPU64" total bytes allocated by Lustre, %d by LNET\n", \
749                        obd_memory_sum(), atomic_read(&libcfs_kmemory));       \
750         } else {                                                              \
751                 OBD_ALLOC_POST(ptr, size, "vmalloced");                       \
752         }                                                                     \
753 } while(0)
754
755 #define OBD_VMALLOC(ptr, size)                                                \
756          __OBD_VMALLOC_VERBOSE(ptr, NULL, 0, size)
757 #define OBD_CPT_VMALLOC(ptr, cptab, cpt, size)                                \
758          __OBD_VMALLOC_VERBOSE(ptr, cptab, cpt, size)
759
760 /* Allocations above this size are considered too big and could not be done
761  * atomically.
762  *
763  * Be very careful when changing this value, especially when decreasing it,
764  * since vmalloc in Linux doesn't perform well on multi-cores system, calling
765  * vmalloc in critical path would hurt peformance badly. See LU-66.
766  */
767 #define OBD_ALLOC_BIG (4 * PAGE_CACHE_SIZE)
768
769 #define OBD_ALLOC_LARGE(ptr, size)                                            \
770 do {                                                                          \
771         if (size > OBD_ALLOC_BIG)                                             \
772                 OBD_VMALLOC(ptr, size);                                       \
773         else                                                                  \
774                 OBD_ALLOC(ptr, size);                                         \
775 } while (0)
776
777 #define OBD_CPT_ALLOC_LARGE(ptr, cptab, cpt, size)                            \
778 do {                                                                          \
779         if (size > OBD_ALLOC_BIG)                                             \
780                 OBD_CPT_VMALLOC(ptr, cptab, cpt, size);                       \
781         else                                                                  \
782                 OBD_CPT_ALLOC(ptr, cptab, cpt, size);                         \
783 } while (0)
784
785 #define OBD_FREE_LARGE(ptr, size)                                             \
786 do {                                                                          \
787         if (size > OBD_ALLOC_BIG)                                             \
788                 OBD_VFREE(ptr, size);                                         \
789         else                                                                  \
790                 OBD_FREE(ptr, size);                                          \
791 } while (0)
792
793 #ifdef CONFIG_DEBUG_SLAB
794 #define POISON(ptr, c, s) do {} while (0)
795 #define POISON_PTR(ptr)  ((void)0)
796 #else
797 #define POISON(ptr, c, s) memset(ptr, c, s)
798 #define POISON_PTR(ptr)  (ptr) = (void *)0xdeadbeef
799 #endif
800
801 #ifdef POISON_BULK
802 #define POISON_PAGE(page, val) do { memset(kmap(page), val, PAGE_CACHE_SIZE);   \
803                                     kunmap(page); } while (0)
804 #else
805 #define POISON_PAGE(page, val) do { } while (0)
806 #endif
807
808 #define OBD_FREE(ptr, size)                                                   \
809 do {                                                                          \
810         OBD_FREE_PRE(ptr, size, "kfreed");                                    \
811         kfree(ptr);                                                        \
812         POISON_PTR(ptr);                                                      \
813 } while(0)
814
815
816 #define OBD_FREE_RCU(ptr, size, handle)                                       \
817 do {                                                                          \
818         struct portals_handle *__h = (handle);                                \
819                                                                               \
820         LASSERT(handle != NULL);                                              \
821         __h->h_cookie = (unsigned long)(ptr);                                 \
822         __h->h_size = (size);                                                 \
823         call_rcu(&__h->h_rcu, class_handle_free_cb);                          \
824         POISON_PTR(ptr);                                                      \
825 } while(0)
826
827 #define OBD_VFREE(ptr, size)                            \
828         do {                                            \
829                 OBD_FREE_PRE(ptr, size, "vfreed");      \
830                 vfree(ptr);                     \
831                 POISON_PTR(ptr);                        \
832         } while (0)
833
834 /* we memset() the slab object to 0 when allocation succeeds, so DO NOT
835  * HAVE A CTOR THAT DOES ANYTHING.  its work will be cleared here.  we'd
836  * love to assert on that, but slab.c keeps kmem_cache_s all to itself. */
837 #define OBD_SLAB_FREE_RTN0(ptr, slab)                                         \
838 ({                                                                            \
839         kmem_cache_free((slab), (ptr));                                    \
840         (ptr) = NULL;                                                         \
841         0;                                                                    \
842 })
843
844 #define __OBD_SLAB_ALLOC_VERBOSE(ptr, slab, cptab, cpt, size, type)           \
845 do {                                                                          \
846         LASSERT(ergo((type) != GFP_ATOMIC, !in_interrupt()));         \
847         (ptr) = (cptab) == NULL ?                                             \
848                 kmem_cache_alloc(slab, type | __GFP_ZERO) :                   \
849                 cfs_mem_cache_cpt_alloc(slab, cptab, cpt, type | __GFP_ZERO); \
850         if (likely((ptr) != NULL &&                                           \
851                    (!HAS_FAIL_ALLOC_FLAG || obd_alloc_fail_rate == 0 ||       \
852                     !obd_alloc_fail(ptr, #ptr, "slab-", size,                 \
853                                     __FILE__, __LINE__) ||                    \
854                     OBD_SLAB_FREE_RTN0(ptr, slab)))) {                        \
855                 OBD_ALLOC_POST(ptr, size, "slab-alloced");                    \
856         }                                                                     \
857 } while(0)
858
859 #define OBD_SLAB_ALLOC_GFP(ptr, slab, size, flags)                            \
860         __OBD_SLAB_ALLOC_VERBOSE(ptr, slab, NULL, 0, size, flags)
861 #define OBD_SLAB_CPT_ALLOC_GFP(ptr, slab, cptab, cpt, size, flags)            \
862         __OBD_SLAB_ALLOC_VERBOSE(ptr, slab, cptab, cpt, size, flags)
863
864 #define OBD_FREE_PTR(ptr) OBD_FREE(ptr, sizeof *(ptr))
865
866 #define OBD_SLAB_FREE(ptr, slab, size)                                        \
867 do {                                                                          \
868         OBD_FREE_PRE(ptr, size, "slab-freed");                                \
869         kmem_cache_free(slab, ptr);                                        \
870         POISON_PTR(ptr);                                                      \
871 } while(0)
872
873 #define OBD_SLAB_ALLOC(ptr, slab, size)                                       \
874         OBD_SLAB_ALLOC_GFP(ptr, slab, size, GFP_NOFS)
875
876 #define OBD_SLAB_CPT_ALLOC(ptr, slab, cptab, cpt, size)                       \
877         OBD_SLAB_CPT_ALLOC_GFP(ptr, slab, cptab, cpt, size, GFP_NOFS)
878
879 #define OBD_SLAB_ALLOC_PTR(ptr, slab)                                         \
880         OBD_SLAB_ALLOC(ptr, slab, sizeof *(ptr))
881
882 #define OBD_SLAB_CPT_ALLOC_PTR(ptr, slab, cptab, cpt)                         \
883         OBD_SLAB_CPT_ALLOC(ptr, slab, cptab, cpt, sizeof *(ptr))
884
885 #define OBD_SLAB_ALLOC_PTR_GFP(ptr, slab, flags)                              \
886         OBD_SLAB_ALLOC_GFP(ptr, slab, sizeof *(ptr), flags)
887
888 #define OBD_SLAB_CPT_ALLOC_PTR_GFP(ptr, slab, cptab, cpt, flags)                      \
889         OBD_SLAB_CPT_ALLOC_GFP(ptr, slab, cptab, cpt, sizeof *(ptr), flags)
890
891 #define OBD_SLAB_FREE_PTR(ptr, slab)                                          \
892         OBD_SLAB_FREE((ptr), (slab), sizeof *(ptr))
893
894 #define KEY_IS(str) \
895         (keylen >= (sizeof(str)-1) && memcmp(key, str, (sizeof(str)-1)) == 0)
896
897 /* Wrapper for contiguous page frame allocation */
898 #define __OBD_PAGE_ALLOC_VERBOSE(ptr, cptab, cpt, gfp_mask)                   \
899 do {                                                                          \
900         (ptr) = (cptab) == NULL ?                                             \
901                 alloc_page(gfp_mask) :                                \
902                 cfs_page_cpt_alloc(cptab, cpt, gfp_mask);                     \
903         if (unlikely((ptr) == NULL)) {                                        \
904                 CERROR("alloc_pages of '" #ptr "' %d page(s) / "LPU64" bytes "\
905                        "failed\n", (int)1,                                    \
906                        (__u64)(1 << PAGE_CACHE_SHIFT));                         \
907                 CERROR(LPU64" total bytes and "LPU64" total pages "           \
908                        "("LPU64" bytes) allocated by Lustre, "                \
909                        "%d total bytes by LNET\n",                            \
910                        obd_memory_sum(),                                      \
911                        obd_pages_sum() << PAGE_CACHE_SHIFT,                   \
912                        obd_pages_sum(),                                       \
913                        atomic_read(&libcfs_kmemory));                         \
914         } else {                                                              \
915                 obd_pages_add(0);                                             \
916                 CDEBUG(D_MALLOC, "alloc_pages '" #ptr "': %d page(s) / "      \
917                        LPU64" bytes at %p.\n",                                \
918                        (int)1,                                                \
919                        (__u64)(1 << PAGE_CACHE_SHIFT), ptr);                    \
920         }                                                                     \
921 } while (0)
922
923 #define OBD_PAGE_ALLOC(ptr, gfp_mask)                                         \
924         __OBD_PAGE_ALLOC_VERBOSE(ptr, NULL, 0, gfp_mask)
925 #define OBD_PAGE_CPT_ALLOC(ptr, cptab, cpt, gfp_mask)                         \
926         __OBD_PAGE_ALLOC_VERBOSE(ptr, cptab, cpt, gfp_mask)
927
928 #define OBD_PAGE_FREE(ptr)                                                    \
929 do {                                                                          \
930         LASSERT(ptr);                                                         \
931         obd_pages_sub(0);                                                     \
932         CDEBUG(D_MALLOC, "free_pages '" #ptr "': %d page(s) / "LPU64" bytes " \
933                "at %p.\n",                                                    \
934                (int)1, (__u64)(1 << PAGE_CACHE_SHIFT),                          \
935                ptr);                                                          \
936         __free_page(ptr);                                                   \
937         (ptr) = (void *)0xdeadbeef;                                           \
938 } while (0)
939
940 #endif