1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
2 * vim:expandtab:shiftwidth=8:tabstop=8:
4 * Copyright (C) 2002 Cluster File Systems, Inc.
6 * This file is part of Lustre, http://www.lustre.org.
8 * Lustre is free software; you can redistribute it and/or
9 * modify it under the terms of version 2 of the GNU General Public
10 * License as published by the Free Software Foundation.
12 * Lustre is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with Lustre; if not, write to the Free Software
19 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
21 * Top level header file for LProc SNMP
22 * Author: Hariharan Thantry thantry@users.sourceforge.net
24 #ifndef _LPROCFS_SNMP_H
25 #define _LPROCFS_SNMP_H
27 #include <lustre/lustre_idl.h>
28 #if defined(__linux__)
29 #include <linux/lprocfs_status.h>
30 #elif defined(__APPLE__)
31 #include <darwin/lprocfs_status.h>
32 #elif defined(__WINNT__)
33 #include <winnt/lprocfs_status.h>
35 #error Unsupported operating system.
39 #if (defined(__KERNEL__) && defined(CONFIG_PROC_FS))
45 cfs_read_proc_t *read_fptr;
46 cfs_write_proc_t *write_fptr;
48 struct file_operations *fops;
51 struct lprocfs_static_vars {
52 struct lprocfs_vars *module_vars;
53 struct lprocfs_vars *obd_vars;
56 /* if we find more consumers this could be generalized */
57 #define OBD_HIST_MAX 32
58 struct obd_histogram {
60 unsigned long oh_buckets[OBD_HIST_MAX];
82 struct obd_histogram hist[BRW_LAST];
86 /* An lprocfs counter can be configured using the enum bit masks below.
88 * LPROCFS_CNTR_EXTERNALLOCK indicates that an external lock already
89 * protects this counter from concurrent updates. If not specified,
90 * lprocfs an internal per-counter lock variable. External locks are
91 * not used to protect counter increments, but are used to protect
92 * counter readout and resets.
94 * LPROCFS_CNTR_AVGMINMAX indicates a multi-valued counter samples,
95 * (i.e. counter can be incremented by more than "1"). When specified,
96 * the counter maintains min, max and sum in addition to a simple
97 * invocation count. This allows averages to be be computed.
98 * If not specified, the counter is an increment-by-1 counter.
99 * min, max, sum, etc. are not maintained.
101 * LPROCFS_CNTR_STDDEV indicates that the counter should track sum of
102 * squares (for multi-valued counter samples only). This allows
103 * external computation of standard deviation, but involves a 64-bit
104 * multiply per counter increment.
108 LPROCFS_CNTR_EXTERNALLOCK = 0x0001,
109 LPROCFS_CNTR_AVGMINMAX = 0x0002,
110 LPROCFS_CNTR_STDDEV = 0x0004,
112 /* counter data type */
113 LPROCFS_TYPE_REGS = 0x0100,
114 LPROCFS_TYPE_BYTES = 0x0200,
115 LPROCFS_TYPE_PAGES = 0x0400,
116 LPROCFS_TYPE_CYCLE = 0x0800,
119 struct lprocfs_atomic {
124 struct lprocfs_counter {
125 struct lprocfs_atomic lc_cntl; /* may need to move to per set */
126 unsigned int lc_config;
132 const char *lc_name; /* must be static */
133 const char *lc_units; /* must be static */
136 struct lprocfs_percpu {
137 struct lprocfs_counter lp_cntr[0];
140 #define LPROCFS_GET_NUM_CPU 0x0001
141 #define LPROCFS_GET_SMP_ID 0x0002
143 enum lprocfs_stats_flags {
144 LPROCFS_STATS_FLAG_PERCPU = 0x0000, /* per cpu counter */
145 LPROCFS_STATS_FLAG_NOPERCPU = 0x0001, /* stats have no percpu
146 * area and need locking */
149 enum lprocfs_fields_flags {
150 LPROCFS_FIELDS_FLAGS_CONFIG = 0x0001,
151 LPROCFS_FIELDS_FLAGS_SUM = 0x0002,
152 LPROCFS_FIELDS_FLAGS_MIN = 0x0003,
153 LPROCFS_FIELDS_FLAGS_MAX = 0x0004,
154 LPROCFS_FIELDS_FLAGS_AVG = 0x0005,
155 LPROCFS_FIELDS_FLAGS_SUMSQUARE = 0x0006,
156 LPROCFS_FIELDS_FLAGS_COUNT = 0x0007,
159 struct lprocfs_stats {
160 unsigned int ls_num; /* # of counters */
161 unsigned int ls_percpu_size;
162 int ls_flags; /* See LPROCFS_STATS_FLAG_* */
163 spinlock_t ls_lock; /* Lock used only when there are
164 * no percpu stats areas */
165 struct lprocfs_percpu *ls_percpu[0];
168 static inline int opcode_offset(__u32 opc) {
169 if (opc < OST_LAST_OPC) {
171 return (opc - OST_FIRST_OPC);
172 } else if (opc < MDS_LAST_OPC) {
174 return (opc - MDS_FIRST_OPC +
175 (OST_LAST_OPC - OST_FIRST_OPC));
176 } else if (opc < LDLM_LAST_OPC) {
178 return (opc - LDLM_FIRST_OPC +
179 (MDS_LAST_OPC - MDS_FIRST_OPC) +
180 (OST_LAST_OPC - OST_FIRST_OPC));
181 } else if (opc < MGS_LAST_OPC) {
183 return (opc - MGS_FIRST_OPC +
184 (LDLM_LAST_OPC - LDLM_FIRST_OPC) +
185 (MDS_LAST_OPC - MDS_FIRST_OPC) +
186 (OST_LAST_OPC - OST_FIRST_OPC));
187 } else if (opc < OBD_LAST_OPC) {
189 return (opc - OBD_FIRST_OPC +
190 (MGS_LAST_OPC - MGS_FIRST_OPC) +
191 (LDLM_LAST_OPC - LDLM_FIRST_OPC) +
192 (MDS_LAST_OPC - MDS_FIRST_OPC) +
193 (OST_LAST_OPC - OST_FIRST_OPC));
194 } else if (opc < LLOG_LAST_OPC) {
196 return (opc - LLOG_FIRST_OPC +
197 (OBD_LAST_OPC - OBD_FIRST_OPC) +
198 (MGS_LAST_OPC - MGS_FIRST_OPC) +
199 (LDLM_LAST_OPC - LDLM_FIRST_OPC) +
200 (MDS_LAST_OPC - MDS_FIRST_OPC) +
201 (OST_LAST_OPC - OST_FIRST_OPC));
202 } else if (opc < FLD_LAST_OPC) {
204 return (opc - FLD_FIRST_OPC +
205 (LLOG_LAST_OPC - LLOG_FIRST_OPC) +
206 (OBD_LAST_OPC - OBD_FIRST_OPC) +
207 (MGS_LAST_OPC - MGS_FIRST_OPC) +
208 (LDLM_LAST_OPC - LDLM_FIRST_OPC) +
209 (MDS_LAST_OPC - MDS_FIRST_OPC) +
210 (OST_LAST_OPC - OST_FIRST_OPC));
211 } else if (opc < SEQ_LAST_OPC) {
213 return (opc - SEQ_FIRST_OPC +
214 (FLD_LAST_OPC - FLD_FIRST_OPC) +
215 (LLOG_LAST_OPC - LLOG_FIRST_OPC) +
216 (OBD_LAST_OPC - OBD_FIRST_OPC) +
217 (MGS_LAST_OPC - MGS_FIRST_OPC) +
218 (LDLM_LAST_OPC - LDLM_FIRST_OPC) +
219 (MDS_LAST_OPC - MDS_FIRST_OPC) +
220 (OST_LAST_OPC - OST_FIRST_OPC));
221 } else if (opc < SEC_LAST_OPC) {
223 return (opc - SEC_FIRST_OPC +
224 (SEQ_LAST_OPC - SEQ_FIRST_OPC) +
225 (FLD_LAST_OPC - FLD_FIRST_OPC) +
226 (LLOG_LAST_OPC - LLOG_FIRST_OPC) +
227 (OBD_LAST_OPC - OBD_FIRST_OPC) +
228 (MGS_LAST_OPC - MGS_FIRST_OPC) +
229 (LDLM_LAST_OPC - LDLM_FIRST_OPC) +
230 (MDS_LAST_OPC - MDS_FIRST_OPC) +
231 (OST_LAST_OPC - OST_FIRST_OPC));
238 #define LUSTRE_MAX_OPCODES ((LDLM_LAST_OPC - LDLM_FIRST_OPC) + \
239 (MDS_LAST_OPC - MDS_FIRST_OPC) + \
240 (OST_LAST_OPC - OST_FIRST_OPC) + \
241 (OBD_LAST_OPC - OBD_FIRST_OPC) + \
242 (FLD_LAST_OPC - FLD_FIRST_OPC) + \
243 (SEQ_LAST_OPC - SEQ_FIRST_OPC) + \
244 (MGS_LAST_OPC - MGS_FIRST_OPC) + \
245 (LLOG_LAST_OPC - LLOG_FIRST_OPC) + \
246 (SEC_LAST_OPC - SEC_FIRST_OPC))
248 #define EXTRA_MAX_OPCODES ((PTLRPC_LAST_CNTR - PTLRPC_FIRST_CNTR) + \
249 (EXTRA_LAST_OPC - EXTRA_FIRST_OPC))
252 PTLRPC_REQWAIT_CNTR = 0,
253 PTLRPC_REQQDEPTH_CNTR,
254 PTLRPC_REQACTIVE_CNTR,
256 PTLRPC_REQBUF_AVAIL_CNTR,
260 #define PTLRPC_FIRST_CNTR PTLRPC_REQWAIT_CNTR
263 LDLM_GLIMPSE_ENQUEUE = 0,
277 #define EXTRA_FIRST_OPC LDLM_GLIMPSE_ENQUEUE
279 extern cfs_proc_dir_entry_t *proc_lustre_root;
283 struct obd_histogram;
287 static inline int lprocfs_stats_lock(struct lprocfs_stats *stats, int type)
291 if (stats->ls_flags & LPROCFS_STATS_FLAG_NOPERCPU) {
292 if (type & LPROCFS_GET_NUM_CPU)
294 if (type & LPROCFS_GET_SMP_ID)
296 spin_lock(&stats->ls_lock);
298 if (type & LPROCFS_GET_NUM_CPU)
299 rc = num_possible_cpus();
300 if (type & LPROCFS_GET_SMP_ID)
301 rc = smp_processor_id();
306 static inline void lprocfs_stats_unlock(struct lprocfs_stats *stats)
308 if (stats->ls_flags & LPROCFS_STATS_FLAG_NOPERCPU)
309 spin_unlock(&stats->ls_lock);
312 /* Two optimized LPROCFS counter increment functions are provided:
313 * lprocfs_counter_incr(cntr, value) - optimized for by-one counters
314 * lprocfs_counter_add(cntr) - use for multi-valued counters
315 * Counter data layout allows config flag, counter lock and the
316 * count itself to reside within a single cache line.
319 static inline void lprocfs_counter_add(struct lprocfs_stats *stats, int idx,
322 struct lprocfs_counter *percpu_cntr;
328 /* With per-client stats, statistics are allocated only for
329 * single CPU area, so the smp_id should be 0 always. */
330 smp_id = lprocfs_stats_lock(stats, LPROCFS_GET_SMP_ID);
332 percpu_cntr = &(stats->ls_percpu[smp_id]->lp_cntr[idx]);
333 atomic_inc(&percpu_cntr->lc_cntl.la_entry);
334 percpu_cntr->lc_count++;
336 if (percpu_cntr->lc_config & LPROCFS_CNTR_AVGMINMAX) {
337 percpu_cntr->lc_sum += amount;
338 if (percpu_cntr->lc_config & LPROCFS_CNTR_STDDEV)
339 percpu_cntr->lc_sumsquare += (__u64)amount * amount;
340 if (amount < percpu_cntr->lc_min)
341 percpu_cntr->lc_min = amount;
342 if (amount > percpu_cntr->lc_max)
343 percpu_cntr->lc_max = amount;
345 atomic_inc(&percpu_cntr->lc_cntl.la_exit);
346 lprocfs_stats_unlock(stats);
349 #define lprocfs_counter_incr(stats, idx) \
350 lprocfs_counter_add(stats, idx, 1)
352 static inline void lprocfs_counter_sub(struct lprocfs_stats *stats, int idx,
355 struct lprocfs_counter *percpu_cntr;
361 /* With per-client stats, statistics are allocated only for
362 * single CPU area, so the smp_id should be 0 always. */
363 smp_id = lprocfs_stats_lock(stats, LPROCFS_GET_SMP_ID);
365 percpu_cntr = &(stats->ls_percpu[smp_id]->lp_cntr[idx]);
366 atomic_inc(&percpu_cntr->lc_cntl.la_entry);
367 if (percpu_cntr->lc_config & LPROCFS_CNTR_AVGMINMAX)
368 percpu_cntr->lc_sum -= amount;
369 atomic_inc(&percpu_cntr->lc_cntl.la_exit);
370 lprocfs_stats_unlock(stats);
372 #define lprocfs_counter_decr(stats, idx) \
373 lprocfs_counter_sub(stats, idx, 1)
375 extern __s64 lprocfs_read_helper(struct lprocfs_counter *lc,
376 enum lprocfs_fields_flags field);
377 static inline __u64 lprocfs_stats_collector(struct lprocfs_stats *stats,
379 enum lprocfs_fields_flags field)
384 LASSERT(stats != NULL);
385 for (i = 0; i < num_possible_cpus(); i++)
386 ret += lprocfs_read_helper(&(stats->ls_percpu[i]->lp_cntr[idx]),
391 extern struct lprocfs_stats *lprocfs_alloc_stats(unsigned int num,
392 enum lprocfs_stats_flags flags);
393 extern void lprocfs_clear_stats(struct lprocfs_stats *stats);
394 extern void lprocfs_free_stats(struct lprocfs_stats **stats);
395 extern void lprocfs_init_ops_stats(int num_private_stats,
396 struct lprocfs_stats *stats);
397 extern int lprocfs_alloc_obd_stats(struct obd_device *obddev,
398 unsigned int num_private_stats);
399 extern void lprocfs_counter_init(struct lprocfs_stats *stats, int index,
400 unsigned conf, const char *name,
402 extern void lprocfs_free_obd_stats(struct obd_device *obddev);
404 extern int lprocfs_exp_setup(struct obd_export *exp);
405 extern int lprocfs_exp_cleanup(struct obd_export *exp);
406 extern int lprocfs_register_stats(cfs_proc_dir_entry_t *root, const char *name,
407 struct lprocfs_stats *stats);
409 /* lprocfs_status.c */
410 extern int lprocfs_add_vars(cfs_proc_dir_entry_t *root,
411 struct lprocfs_vars *var,
414 extern cfs_proc_dir_entry_t *lprocfs_register(const char *name,
415 cfs_proc_dir_entry_t *parent,
416 struct lprocfs_vars *list,
419 extern void lprocfs_remove(cfs_proc_dir_entry_t **root);
421 extern cfs_proc_dir_entry_t *lprocfs_srch(cfs_proc_dir_entry_t *root,
424 extern int lprocfs_obd_setup(struct obd_device *obd, struct lprocfs_vars *list);
425 extern int lprocfs_obd_cleanup(struct obd_device *obd);
426 extern struct file_operations lprocfs_evict_client_fops;
428 extern int lprocfs_seq_create(cfs_proc_dir_entry_t *parent, char *name,
429 mode_t mode, struct file_operations *seq_fops,
431 extern int lprocfs_obd_seq_create(struct obd_device *dev, char *name,
432 mode_t mode, struct file_operations *seq_fops,
435 /* Generic callbacks */
437 extern int lprocfs_rd_u64(char *page, char **start, off_t off,
438 int count, int *eof, void *data);
439 extern int lprocfs_rd_atomic(char *page, char **start, off_t off,
440 int count, int *eof, void *data);
441 extern int lprocfs_wr_atomic(struct file *file, const char *buffer,
442 unsigned long count, void *data);
443 extern int lprocfs_rd_uint(char *page, char **start, off_t off,
444 int count, int *eof, void *data);
445 extern int lprocfs_wr_uint(struct file *file, const char *buffer,
446 unsigned long count, void *data);
447 extern int lprocfs_rd_uuid(char *page, char **start, off_t off,
448 int count, int *eof, void *data);
449 extern int lprocfs_rd_name(char *page, char **start, off_t off,
450 int count, int *eof, void *data);
451 extern int lprocfs_rd_fstype(char *page, char **start, off_t off,
452 int count, int *eof, void *data);
453 extern int lprocfs_rd_server_uuid(char *page, char **start, off_t off,
454 int count, int *eof, void *data);
455 extern int lprocfs_rd_conn_uuid(char *page, char **start, off_t off,
456 int count, int *eof, void *data);
457 extern int lprocfs_rd_connect_flags(char *page, char **start, off_t off,
458 int count, int *eof, void *data);
459 extern int lprocfs_rd_num_exports(char *page, char **start, off_t off,
460 int count, int *eof, void *data);
461 extern int lprocfs_rd_numrefs(char *page, char **start, off_t off,
462 int count, int *eof, void *data);
463 extern int lprocfs_wr_evict_client(struct file *file, const char *buffer,
464 unsigned long count, void *data);
465 extern int lprocfs_wr_ping(struct file *file, const char *buffer,
466 unsigned long count, void *data);
469 extern int lprocfs_rd_blksize(char *page, char **start, off_t off,
470 int count, int *eof, void *data);
471 extern int lprocfs_rd_kbytestotal(char *page, char **start, off_t off,
472 int count, int *eof, void *data);
473 extern int lprocfs_rd_kbytesfree(char *page, char **start, off_t off,
474 int count, int *eof, void *data);
475 extern int lprocfs_rd_kbytesavail(char *page, char **start, off_t off,
476 int count, int *eof, void *data);
477 extern int lprocfs_rd_filestotal(char *page, char **start, off_t off,
478 int count, int *eof, void *data);
479 extern int lprocfs_rd_filesfree(char *page, char **start, off_t off,
480 int count, int *eof, void *data);
481 extern int lprocfs_rd_filegroups(char *page, char **start, off_t off,
482 int count, int *eof, void *data);
484 extern int lprocfs_write_helper(const char *buffer, unsigned long count,
486 extern int lprocfs_write_frac_helper(const char *buffer, unsigned long count,
488 extern int lprocfs_read_frac_helper(char *buffer, unsigned long count,
490 extern int lprocfs_write_u64_helper(const char *buffer, unsigned long count,
492 extern int lprocfs_write_frac_u64_helper(const char *buffer, unsigned long count,
493 __u64 *val, int mult);
494 void lprocfs_oh_tally(struct obd_histogram *oh, unsigned int value);
495 void lprocfs_oh_tally_log2(struct obd_histogram *oh, unsigned int value);
496 void lprocfs_oh_clear(struct obd_histogram *oh);
497 unsigned long lprocfs_oh_sum(struct obd_histogram *oh);
499 /* lprocfs_status.c: counter read/write functions */
500 extern int lprocfs_counter_read(char *page, char **start, off_t off,
501 int count, int *eof, void *data);
502 extern int lprocfs_counter_write(struct file *file, const char *buffer,
503 unsigned long count, void *data);
505 /* lprocfs_status.c: recovery status */
506 int lprocfs_obd_rd_recovery_status(char *page, char **start, off_t off,
507 int count, int *eof, void *data);
509 extern int lprocfs_seq_release(struct inode *, struct file *);
511 /* in lprocfs_stat.c, to protect the private data for proc entries */
512 extern struct rw_semaphore _lprocfs_lock;
513 #define LPROCFS_ENTRY() do { \
514 down_read(&_lprocfs_lock); \
516 #define LPROCFS_EXIT() do { \
517 up_read(&_lprocfs_lock); \
519 #define LPROCFS_ENTRY_AND_CHECK(dp) do { \
520 typecheck(struct proc_dir_entry *, dp); \
522 if ((dp)->deleted) { \
528 /* You must use these macros when you want to refer to
529 * the import in a client obd_device for a lprocfs entry */
530 #define LPROCFS_CLIMP_CHECK(obd) do { \
531 typecheck(struct obd_device *, obd); \
532 mutex_down(&(obd)->u.cli.cl_sem); \
533 if ((obd)->u.cli.cl_import == NULL) { \
534 mutex_up(&(obd)->u.cli.cl_sem); \
538 #define LPROCFS_CLIMP_EXIT(obd) \
539 mutex_up(&(obd)->u.cli.cl_sem);
542 /* write the name##_seq_show function, call LPROC_SEQ_FOPS_RO for read-only
543 proc entries; otherwise, you will define name##_seq_write function also for
544 a read-write proc entry, and then call LPROC_SEQ_SEQ instead. Finally,
545 call lprocfs_obd_seq_create(obd, filename, 0444, &name#_fops, data); */
546 #define __LPROC_SEQ_FOPS(name, custom_seq_write) \
547 static int name##_seq_open(struct inode *inode, struct file *file) { \
548 struct proc_dir_entry *dp = PDE(inode); \
550 LPROCFS_ENTRY_AND_CHECK(dp); \
551 rc = single_open(file, name##_seq_show, dp->data); \
558 struct file_operations name##_fops = { \
559 .owner = THIS_MODULE, \
560 .open = name##_seq_open, \
562 .write = custom_seq_write, \
563 .llseek = seq_lseek, \
564 .release = lprocfs_seq_release, \
567 #define LPROC_SEQ_FOPS_RO(name) __LPROC_SEQ_FOPS(name, NULL)
568 #define LPROC_SEQ_FOPS(name) __LPROC_SEQ_FOPS(name, name##_seq_write)
570 /* lprocfs_status.c: read recovery max time bz13079 */
571 int lprocfs_obd_rd_recovery_maxtime(char *page, char **start, off_t off,
572 int count, int *eof, void *data);
574 /* lprocfs_status.c: write recovery max time bz13079 */
575 int lprocfs_obd_wr_recovery_maxtime(struct file *file, const char *buffer,
576 unsigned long count, void *data);
578 /* LPROCFS is not defined */
579 static inline void lprocfs_counter_add(struct lprocfs_stats *stats,
580 int index, long amount) { return; }
581 static inline void lprocfs_counter_incr(struct lprocfs_stats *stats,
582 int index) { return; }
583 static inline void lprocfs_counter_sub(struct lprocfs_stats *stats,
584 int index, long amount) { return; }
585 static inline void lprocfs_counter_init(struct lprocfs_stats *stats,
586 int index, unsigned conf,
587 const char *name, const char *units)
590 static inline __u64 lc_read_helper(struct lprocfs_counter *lc,
591 enum lprocfs_fields_flags field)
594 static inline struct lprocfs_stats* lprocfs_alloc_stats(unsigned int num,
595 enum lprocfs_stats_flags flags)
597 static inline void lprocfs_clear_stats(struct lprocfs_stats *stats)
599 static inline void lprocfs_free_stats(struct lprocfs_stats **stats)
601 static inline int lprocfs_register_stats(cfs_proc_dir_entry_t *root,
603 struct lprocfs_stats *stats)
605 static inline void lprocfs_init_ops_stats(int num_private_stats,
606 struct lprocfs_stats *stats)
608 static inline int lprocfs_alloc_obd_stats(struct obd_device *obddev,
609 unsigned int num_private_stats)
611 static inline void lprocfs_free_obd_stats(struct obd_device *obddev)
615 static inline int lprocfs_exp_setup(struct obd_export *exp)
617 static inline int lprocfs_exp_cleanup(struct obd_export *exp)
620 static inline cfs_proc_dir_entry_t *
621 lprocfs_register(const char *name, cfs_proc_dir_entry_t *parent,
622 struct lprocfs_vars *list, void *data) { return NULL; }
623 static inline int lprocfs_add_vars(cfs_proc_dir_entry_t *root,
624 struct lprocfs_vars *var,
625 void *data) { return 0; }
626 static inline void lprocfs_remove(cfs_proc_dir_entry_t **root) {};
627 static inline cfs_proc_dir_entry_t *lprocfs_srch(cfs_proc_dir_entry_t *head,
628 const char *name) {return 0;}
629 static inline int lprocfs_obd_setup(struct obd_device *dev,
630 struct lprocfs_vars *list) { return 0; }
631 static inline int lprocfs_obd_cleanup(struct obd_device *dev) { return 0; }
632 static inline int lprocfs_rd_u64(char *page, char **start, off_t off,
633 int count, int *eof, void *data) { return 0; }
634 static inline int lprocfs_rd_uuid(char *page, char **start, off_t off,
635 int count, int *eof, void *data) { return 0; }
636 static inline int lprocfs_rd_name(char *page, char **start, off_t off,
637 int count, int *eof, void *data) { return 0; }
638 static inline int lprocfs_rd_server_uuid(char *page, char **start, off_t off,
639 int count, int *eof, void *data)
641 static inline int lprocfs_rd_conn_uuid(char *page, char **start, off_t off,
642 int count, int *eof, void *data)
644 static inline int lprocfs_rd_connect_flags(char *page, char **start, off_t off,
645 int count, int *eof, void *data)
647 static inline int lprocfs_rd_num_exports(char *page, char **start, off_t off,
648 int count, int *eof, void *data)
650 static inline int lprocfs_rd_numrefs(char *page, char **start, off_t off,
651 int count, int *eof, void *data)
653 static inline int lprocfs_wr_evict_client(struct file *file, const char *buffer,
654 unsigned long count, void *data)
656 static inline int lprocfs_wr_ping(struct file *file, const char *buffer,
657 unsigned long count, void *data)
663 int lprocfs_rd_blksize(char *page, char **start, off_t off,
664 int count, int *eof, void *data) { return 0; }
666 int lprocfs_rd_kbytestotal(char *page, char **start, off_t off,
667 int count, int *eof, void *data) { return 0; }
669 int lprocfs_rd_kbytesfree(char *page, char **start, off_t off,
670 int count, int *eof, void *data) { return 0; }
672 int lprocfs_rd_kbytesavail(char *page, char **start, off_t off,
673 int count, int *eof, void *data) { return 0; }
675 int lprocfs_rd_filestotal(char *page, char **start, off_t off,
676 int count, int *eof, void *data) { return 0; }
678 int lprocfs_rd_filesfree(char *page, char **start, off_t off,
679 int count, int *eof, void *data) { return 0; }
681 int lprocfs_rd_filegroups(char *page, char **start, off_t off,
682 int count, int *eof, void *data) { return 0; }
684 void lprocfs_oh_tally(struct obd_histogram *oh, unsigned int value) {}
686 void lprocfs_oh_tally_log2(struct obd_histogram *oh, unsigned int value) {}
688 void lprocfs_oh_clear(struct obd_histogram *oh) {}
690 unsigned long lprocfs_oh_sum(struct obd_histogram *oh) { return 0; }
692 int lprocfs_counter_read(char *page, char **start, off_t off,
693 int count, int *eof, void *data) { return 0; }
695 int lprocfs_counter_write(struct file *file, const char *buffer,
696 unsigned long count, void *data) { return 0; }
699 __u64 lprocfs_stats_collector(struct lprocfs_stats *stats, int idx,
700 enum lprocfs_fields_flags field)
703 #define LPROCFS_ENTRY()
704 #define LPROCFS_EXIT()
705 #define LPROCFS_ENTRY_AND_CHECK(dp)
706 #define LPROC_SEQ_FOPS_RO(name)
707 #define LPROC_SEQ_FOPS(name)
711 #endif /* LPROCFS_SNMP_H */