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 #define LC_MIN_INIT ((~(__u64)0) >> 1)
126 struct lprocfs_counter {
127 struct lprocfs_atomic lc_cntl; /* may need to move to per set */
128 unsigned int lc_config;
134 const char *lc_name; /* must be static */
135 const char *lc_units; /* must be static */
138 struct lprocfs_percpu {
139 struct lprocfs_counter lp_cntr[0];
142 #define LPROCFS_GET_NUM_CPU 0x0001
143 #define LPROCFS_GET_SMP_ID 0x0002
145 enum lprocfs_stats_flags {
146 LPROCFS_STATS_FLAG_PERCPU = 0x0000, /* per cpu counter */
147 LPROCFS_STATS_FLAG_NOPERCPU = 0x0001, /* stats have no percpu
148 * area and need locking */
151 enum lprocfs_fields_flags {
152 LPROCFS_FIELDS_FLAGS_CONFIG = 0x0001,
153 LPROCFS_FIELDS_FLAGS_SUM = 0x0002,
154 LPROCFS_FIELDS_FLAGS_MIN = 0x0003,
155 LPROCFS_FIELDS_FLAGS_MAX = 0x0004,
156 LPROCFS_FIELDS_FLAGS_AVG = 0x0005,
157 LPROCFS_FIELDS_FLAGS_SUMSQUARE = 0x0006,
158 LPROCFS_FIELDS_FLAGS_COUNT = 0x0007,
161 struct lprocfs_stats {
162 unsigned int ls_num; /* # of counters */
163 int ls_flags; /* See LPROCFS_STATS_FLAG_* */
164 spinlock_t ls_lock; /* Lock used only when there are
165 * no percpu stats areas */
166 struct lprocfs_percpu *ls_percpu[0];
169 static inline int opcode_offset(__u32 opc) {
170 if (opc < OST_LAST_OPC) {
172 return (opc - OST_FIRST_OPC);
173 } else if (opc < MDS_LAST_OPC) {
175 return (opc - MDS_FIRST_OPC +
176 (OST_LAST_OPC - OST_FIRST_OPC));
177 } else if (opc < LDLM_LAST_OPC) {
179 return (opc - LDLM_FIRST_OPC +
180 (MDS_LAST_OPC - MDS_FIRST_OPC) +
181 (OST_LAST_OPC - OST_FIRST_OPC));
182 } else if (opc < MGS_LAST_OPC) {
184 return (opc - MGS_FIRST_OPC +
185 (LDLM_LAST_OPC - LDLM_FIRST_OPC) +
186 (MDS_LAST_OPC - MDS_FIRST_OPC) +
187 (OST_LAST_OPC - OST_FIRST_OPC));
188 } else if (opc < OBD_LAST_OPC) {
190 return (opc - OBD_FIRST_OPC +
191 (MGS_LAST_OPC - MGS_FIRST_OPC) +
192 (LDLM_LAST_OPC - LDLM_FIRST_OPC) +
193 (MDS_LAST_OPC - MDS_FIRST_OPC) +
194 (OST_LAST_OPC - OST_FIRST_OPC));
195 } else if (opc < LLOG_LAST_OPC) {
197 return (opc - LLOG_FIRST_OPC +
198 (OBD_LAST_OPC - OBD_FIRST_OPC) +
199 (MGS_LAST_OPC - MGS_FIRST_OPC) +
200 (LDLM_LAST_OPC - LDLM_FIRST_OPC) +
201 (MDS_LAST_OPC - MDS_FIRST_OPC) +
202 (OST_LAST_OPC - OST_FIRST_OPC));
209 #define LUSTRE_MAX_OPCODES ((OST_LAST_OPC - OST_FIRST_OPC) + \
210 (MDS_LAST_OPC - MDS_FIRST_OPC) + \
211 (LDLM_LAST_OPC - LDLM_FIRST_OPC) + \
212 (MGS_LAST_OPC - MGS_FIRST_OPC) + \
213 (OBD_LAST_OPC - OBD_FIRST_OPC) + \
214 (LLOG_LAST_OPC - LLOG_FIRST_OPC))
216 #define EXTRA_MAX_OPCODES ((PTLRPC_LAST_CNTR - PTLRPC_FIRST_CNTR) + \
217 (EXTRA_LAST_OPC - EXTRA_FIRST_OPC))
220 PTLRPC_REQWAIT_CNTR = 0,
221 PTLRPC_REQQDEPTH_CNTR,
222 PTLRPC_REQACTIVE_CNTR,
224 PTLRPC_REQBUF_AVAIL_CNTR,
228 #define PTLRPC_FIRST_CNTR PTLRPC_REQWAIT_CNTR
231 LDLM_GLIMPSE_ENQUEUE = 0,
245 #define EXTRA_FIRST_OPC LDLM_GLIMPSE_ENQUEUE
247 extern cfs_proc_dir_entry_t *proc_lustre_root;
251 struct obd_histogram;
253 /* Days / hours / mins / seconds format */
257 static inline void s2dhms(struct dhms *ts, time_t secs)
259 ts->d = secs / 86400;
266 #define DHMS_FMT "%dd%dh%02dm%02ds"
267 #define DHMS_VARS(x) (x)->d, (x)->h, (x)->m, (x)->s
272 static inline int lprocfs_stats_lock(struct lprocfs_stats *stats, int type)
276 if (stats->ls_flags & LPROCFS_STATS_FLAG_NOPERCPU) {
277 if (type & LPROCFS_GET_NUM_CPU)
279 if (type & LPROCFS_GET_SMP_ID)
281 spin_lock(&stats->ls_lock);
283 if (type & LPROCFS_GET_NUM_CPU)
284 rc = num_possible_cpus();
285 if (type & LPROCFS_GET_SMP_ID)
286 rc = smp_processor_id();
291 static inline void lprocfs_stats_unlock(struct lprocfs_stats *stats)
293 if (stats->ls_flags & LPROCFS_STATS_FLAG_NOPERCPU)
294 spin_unlock(&stats->ls_lock);
297 /* Two optimized LPROCFS counter increment functions are provided:
298 * lprocfs_counter_incr(cntr, value) - optimized for by-one counters
299 * lprocfs_counter_add(cntr) - use for multi-valued counters
300 * Counter data layout allows config flag, counter lock and the
301 * count itself to reside within a single cache line.
304 extern void lprocfs_counter_add(struct lprocfs_stats *stats, int idx,
306 extern void lprocfs_counter_sub(struct lprocfs_stats *stats, int idx,
309 #define lprocfs_counter_incr(stats, idx) \
310 lprocfs_counter_add(stats, idx, 1)
311 #define lprocfs_counter_decr(stats, idx) \
312 lprocfs_counter_sub(stats, idx, 1)
314 extern __s64 lprocfs_read_helper(struct lprocfs_counter *lc,
315 enum lprocfs_fields_flags field);
317 static inline __u64 lprocfs_stats_collector(struct lprocfs_stats *stats,
319 enum lprocfs_fields_flags field)
324 LASSERT(stats != NULL);
325 for (i = 0; i < num_possible_cpus(); i++)
326 ret += lprocfs_read_helper(&(stats->ls_percpu[i]->lp_cntr[idx]),
331 extern struct lprocfs_stats *lprocfs_alloc_stats(unsigned int num,
332 enum lprocfs_stats_flags flags);
333 extern void lprocfs_clear_stats(struct lprocfs_stats *stats);
334 extern void lprocfs_free_stats(struct lprocfs_stats **stats);
335 extern void lprocfs_init_ops_stats(int num_private_stats,
336 struct lprocfs_stats *stats);
337 extern int lprocfs_alloc_obd_stats(struct obd_device *obddev,
338 unsigned int num_private_stats);
339 extern void lprocfs_counter_init(struct lprocfs_stats *stats, int index,
340 unsigned conf, const char *name,
342 extern void lprocfs_free_obd_stats(struct obd_device *obddev);
344 extern int lprocfs_add_clear_entry(struct obd_device * obd,
345 cfs_proc_dir_entry_t *entry);
346 extern int lprocfs_exp_setup(struct obd_export *exp,
347 lnet_nid_t *peer_nid, int *newnid);
348 extern int lprocfs_exp_cleanup(struct obd_export *exp);
349 extern int lprocfs_add_simple(struct proc_dir_entry *root,
350 char *name, read_proc_t *read_proc,
351 write_proc_t *write_proc, void *data);
352 extern int lprocfs_register_stats(cfs_proc_dir_entry_t *root, const char *name,
353 struct lprocfs_stats *stats);
355 /* lprocfs_status.c */
356 extern int lprocfs_add_vars(cfs_proc_dir_entry_t *root,
357 struct lprocfs_vars *var,
360 extern cfs_proc_dir_entry_t *lprocfs_register(const char *name,
361 cfs_proc_dir_entry_t *parent,
362 struct lprocfs_vars *list,
365 extern void lprocfs_remove(cfs_proc_dir_entry_t **root);
367 extern cfs_proc_dir_entry_t *lprocfs_srch(cfs_proc_dir_entry_t *root,
370 extern int lprocfs_obd_setup(struct obd_device *obd, struct lprocfs_vars *list);
371 extern int lprocfs_obd_cleanup(struct obd_device *obd);
372 extern int lprocfs_add_simple(struct proc_dir_entry *root, char *name,
373 read_proc_t *read_proc, write_proc_t *write_proc,
376 extern void lprocfs_free_per_client_stats(struct obd_device *obd);
377 extern int lprocfs_nid_stats_clear_write(struct file *file, const char *buffer,
378 unsigned long count, void *data);
379 extern int lprocfs_nid_stats_clear_read(char *page, char **start, off_t off,
380 int count, int *eof, void *data);
383 extern struct file_operations lprocfs_evict_client_fops;
385 extern int lprocfs_seq_create(cfs_proc_dir_entry_t *parent, char *name,
386 mode_t mode, struct file_operations *seq_fops,
388 extern int lprocfs_obd_seq_create(struct obd_device *dev, char *name,
389 mode_t mode, struct file_operations *seq_fops,
392 /* Generic callbacks */
394 extern int lprocfs_rd_u64(char *page, char **start, off_t off,
395 int count, int *eof, void *data);
396 extern int lprocfs_rd_atomic(char *page, char **start, off_t off,
397 int count, int *eof, void *data);
398 extern int lprocfs_wr_atomic(struct file *file, const char *buffer,
399 unsigned long count, void *data);
400 extern int lprocfs_rd_uint(char *page, char **start, off_t off,
401 int count, int *eof, void *data);
402 extern int lprocfs_wr_uint(struct file *file, const char *buffer,
403 unsigned long count, void *data);
404 extern int lprocfs_rd_uuid(char *page, char **start, off_t off,
405 int count, int *eof, void *data);
406 extern int lprocfs_rd_name(char *page, char **start, off_t off,
407 int count, int *eof, void *data);
408 extern int lprocfs_rd_fstype(char *page, char **start, off_t off,
409 int count, int *eof, void *data);
410 extern int lprocfs_rd_server_uuid(char *page, char **start, off_t off,
411 int count, int *eof, void *data);
412 extern int lprocfs_rd_conn_uuid(char *page, char **start, off_t off,
413 int count, int *eof, void *data);
414 extern int lprocfs_rd_connect_flags(char *page, char **start, off_t off,
415 int count, int *eof, void *data);
416 extern int lprocfs_rd_num_exports(char *page, char **start, off_t off,
417 int count, int *eof, void *data);
418 extern int lprocfs_rd_numrefs(char *page, char **start, off_t off,
419 int count, int *eof, void *data);
420 struct adaptive_timeout;
421 extern int lprocfs_at_hist_helper(char *page, int count, int rc,
422 struct adaptive_timeout *at);
423 extern int lprocfs_rd_timeouts(char *page, char **start, off_t off,
424 int count, int *eof, void *data);
425 extern int lprocfs_wr_timeouts(struct file *file, const char *buffer,
426 unsigned long count, void *data);
427 extern int lprocfs_wr_evict_client(struct file *file, const char *buffer,
428 unsigned long count, void *data);
429 extern int lprocfs_wr_ping(struct file *file, const char *buffer,
430 unsigned long count, void *data);
433 extern int lprocfs_rd_blksize(char *page, char **start, off_t off,
434 int count, int *eof, void *data);
435 extern int lprocfs_rd_kbytestotal(char *page, char **start, off_t off,
436 int count, int *eof, void *data);
437 extern int lprocfs_rd_kbytesfree(char *page, char **start, off_t off,
438 int count, int *eof, void *data);
439 extern int lprocfs_rd_kbytesavail(char *page, char **start, off_t off,
440 int count, int *eof, void *data);
441 extern int lprocfs_rd_filestotal(char *page, char **start, off_t off,
442 int count, int *eof, void *data);
443 extern int lprocfs_rd_filesfree(char *page, char **start, off_t off,
444 int count, int *eof, void *data);
445 extern int lprocfs_rd_filegroups(char *page, char **start, off_t off,
446 int count, int *eof, void *data);
448 extern int lprocfs_write_helper(const char *buffer, unsigned long count,
450 extern int lprocfs_write_frac_helper(const char *buffer, unsigned long count,
452 extern int lprocfs_read_frac_helper(char *buffer, unsigned long count,
454 extern int lprocfs_write_u64_helper(const char *buffer, unsigned long count,
456 extern int lprocfs_write_frac_u64_helper(const char *buffer, unsigned long count,
457 __u64 *val, int mult);
458 void lprocfs_oh_tally(struct obd_histogram *oh, unsigned int value);
459 void lprocfs_oh_tally_log2(struct obd_histogram *oh, unsigned int value);
460 void lprocfs_oh_clear(struct obd_histogram *oh);
461 unsigned long lprocfs_oh_sum(struct obd_histogram *oh);
463 /* lprocfs_status.c: counter read/write functions */
464 extern int lprocfs_counter_read(char *page, char **start, off_t off,
465 int count, int *eof, void *data);
466 extern int lprocfs_counter_write(struct file *file, const char *buffer,
467 unsigned long count, void *data);
469 /* lprocfs_status.c: recovery status */
470 int lprocfs_obd_rd_recovery_status(char *page, char **start, off_t off,
471 int count, int *eof, void *data);
473 extern int lprocfs_seq_release(struct inode *, struct file *);
475 /* in lprocfs_stat.c, to protect the private data for proc entries */
476 extern struct rw_semaphore _lprocfs_lock;
477 #define LPROCFS_ENTRY() do { \
478 down_read(&_lprocfs_lock); \
480 #define LPROCFS_EXIT() do { \
481 up_read(&_lprocfs_lock); \
483 #define LPROCFS_ENTRY_AND_CHECK(dp) do { \
484 typecheck(struct proc_dir_entry *, dp); \
486 if ((dp)->deleted) { \
492 /* You must use these macros when you want to refer to
493 * the import in a client obd_device for a lprocfs entry */
494 #define LPROCFS_CLIMP_CHECK(obd) do { \
495 typecheck(struct obd_device *, obd); \
496 down_read(&(obd)->u.cli.cl_sem); \
497 if ((obd)->u.cli.cl_import == NULL) { \
498 up_read(&(obd)->u.cli.cl_sem); \
502 #define LPROCFS_CLIMP_EXIT(obd) \
503 up_read(&(obd)->u.cli.cl_sem);
506 /* write the name##_seq_show function, call LPROC_SEQ_FOPS_RO for read-only
507 proc entries; otherwise, you will define name##_seq_write function also for
508 a read-write proc entry, and then call LPROC_SEQ_SEQ instead. Finally,
509 call lprocfs_obd_seq_create(obd, filename, 0444, &name#_fops, data); */
510 #define __LPROC_SEQ_FOPS(name, custom_seq_write) \
511 static int name##_seq_open(struct inode *inode, struct file *file) { \
512 struct proc_dir_entry *dp = PDE(inode); \
514 LPROCFS_ENTRY_AND_CHECK(dp); \
515 rc = single_open(file, name##_seq_show, dp->data); \
522 struct file_operations name##_fops = { \
523 .owner = THIS_MODULE, \
524 .open = name##_seq_open, \
526 .write = custom_seq_write, \
527 .llseek = seq_lseek, \
528 .release = lprocfs_seq_release, \
531 #define LPROC_SEQ_FOPS_RO(name) __LPROC_SEQ_FOPS(name, NULL)
532 #define LPROC_SEQ_FOPS(name) __LPROC_SEQ_FOPS(name, name##_seq_write)
535 struct ptlrpc_request;
536 extern void target_print_req(void *seq_file, struct ptlrpc_request *req);
539 /* lprocfs_status.c: read recovery max time bz13079 */
540 int lprocfs_obd_rd_recovery_maxtime(char *page, char **start, off_t off,
541 int count, int *eof, void *data);
543 /* lprocfs_status.c: write recovery max time bz13079 */
544 int lprocfs_obd_wr_recovery_maxtime(struct file *file, const char *buffer,
545 unsigned long count, void *data);
549 /* LPROCFS is not defined */
550 static inline void lprocfs_counter_add(struct lprocfs_stats *stats,
551 int index, long amount) { return; }
552 static inline void lprocfs_counter_incr(struct lprocfs_stats *stats,
553 int index) { return; }
554 static inline void lprocfs_counter_sub(struct lprocfs_stats *stats,
555 int index, long amount) { return; }
556 static inline void lprocfs_counter_init(struct lprocfs_stats *stats,
557 int index, unsigned conf,
558 const char *name, const char *units)
561 static inline __u64 lc_read_helper(struct lprocfs_counter *lc,
562 enum lprocfs_fields_flags field)
565 static inline struct lprocfs_stats* lprocfs_alloc_stats(unsigned int num,
566 enum lprocfs_stats_flags flags)
568 static inline void lprocfs_clear_stats(struct lprocfs_stats *stats)
570 static inline void lprocfs_free_stats(struct lprocfs_stats **stats)
572 static inline int lprocfs_register_stats(cfs_proc_dir_entry_t *root,
574 struct lprocfs_stats *stats)
576 static inline void lprocfs_init_ops_stats(int num_private_stats,
577 struct lprocfs_stats *stats)
579 static inline int lprocfs_alloc_obd_stats(struct obd_device *obddev,
580 unsigned int num_private_stats)
582 static inline void lprocfs_free_obd_stats(struct obd_device *obddev)
586 static inline int lprocfs_add_clear_entry(struct obd_export *exp)
588 static inline int lprocfs_exp_setup(struct obd_export *exp,
589 lnet_nid_t *peer_nid, int *newnid)
591 static inline int lprocfs_exp_cleanup(struct obd_export *exp)
593 static inline int lprocfs_add_simple(struct proc_dir_entry *root,
595 read_proc_t *read_proc,
596 write_proc_t *write_proc,
600 static inline void lprocfs_free_per_client_stats(struct obd_device *obd)
603 int lprocfs_nid_stats_clear_write(struct file *file, const char *buffer,
604 unsigned long count, void *data)
607 int lprocfs_nid_stats_clear_read(char *page, char **start, off_t off,
608 int count, int *eof, void *data)
612 static inline cfs_proc_dir_entry_t *
613 lprocfs_register(const char *name, cfs_proc_dir_entry_t *parent,
614 struct lprocfs_vars *list, void *data) { return NULL; }
615 static inline int lprocfs_add_vars(cfs_proc_dir_entry_t *root,
616 struct lprocfs_vars *var,
617 void *data) { return 0; }
618 static inline void lprocfs_remove(cfs_proc_dir_entry_t **root) {};
619 static inline cfs_proc_dir_entry_t *lprocfs_srch(cfs_proc_dir_entry_t *head,
620 const char *name) {return 0;}
621 static inline int lprocfs_obd_setup(struct obd_device *dev,
622 struct lprocfs_vars *list) { return 0; }
623 static inline int lprocfs_obd_cleanup(struct obd_device *dev) { return 0; }
624 static inline int lprocfs_rd_u64(char *page, char **start, off_t off,
625 int count, int *eof, void *data) { return 0; }
626 static inline int lprocfs_rd_uuid(char *page, char **start, off_t off,
627 int count, int *eof, void *data) { return 0; }
628 static inline int lprocfs_rd_name(char *page, char **start, off_t off,
629 int count, int *eof, void *data) { return 0; }
630 static inline int lprocfs_rd_server_uuid(char *page, char **start, off_t off,
631 int count, int *eof, void *data)
633 static inline int lprocfs_rd_conn_uuid(char *page, char **start, off_t off,
634 int count, int *eof, void *data)
636 static inline int lprocfs_rd_connect_flags(char *page, char **start, off_t off,
637 int count, int *eof, void *data)
639 static inline int lprocfs_rd_num_exports(char *page, char **start, off_t off,
640 int count, int *eof, void *data)
642 static inline int lprocfs_rd_numrefs(char *page, char **start, off_t off,
643 int count, int *eof, void *data)
645 struct adaptive_timeout;
646 static inline int lprocfs_at_hist_helper(char *page, int count, int rc,
647 struct adaptive_timeout *at)
649 static inline int lprocfs_rd_timeouts(char *page, char **start, off_t off,
650 int count, int *eof, void *data)
652 static inline int lprocfs_wr_timeouts(struct file *file, const char *buffer,
653 unsigned long count, void *data)
655 static inline int lprocfs_wr_evict_client(struct file *file, const char *buffer,
656 unsigned long count, void *data)
658 static inline int lprocfs_wr_ping(struct file *file, const char *buffer,
659 unsigned long count, void *data)
665 int lprocfs_rd_blksize(char *page, char **start, off_t off,
666 int count, int *eof, void *data) { return 0; }
668 int lprocfs_rd_kbytestotal(char *page, char **start, off_t off,
669 int count, int *eof, void *data) { return 0; }
671 int lprocfs_rd_kbytesfree(char *page, char **start, off_t off,
672 int count, int *eof, void *data) { return 0; }
674 int lprocfs_rd_kbytesavail(char *page, char **start, off_t off,
675 int count, int *eof, void *data) { return 0; }
677 int lprocfs_rd_filestotal(char *page, char **start, off_t off,
678 int count, int *eof, void *data) { return 0; }
680 int lprocfs_rd_filesfree(char *page, char **start, off_t off,
681 int count, int *eof, void *data) { return 0; }
683 int lprocfs_rd_filegroups(char *page, char **start, off_t off,
684 int count, int *eof, void *data) { return 0; }
686 void lprocfs_oh_tally(struct obd_histogram *oh, unsigned int value) {}
688 void lprocfs_oh_tally_log2(struct obd_histogram *oh, unsigned int value) {}
690 void lprocfs_oh_clear(struct obd_histogram *oh) {}
692 unsigned long lprocfs_oh_sum(struct obd_histogram *oh) { return 0; }
694 int lprocfs_counter_read(char *page, char **start, off_t off,
695 int count, int *eof, void *data) { return 0; }
697 int lprocfs_counter_write(struct file *file, const char *buffer,
698 unsigned long count, void *data) { return 0; }
701 __u64 lprocfs_stats_collector(struct lprocfs_stats *stats, int idx,
702 enum lprocfs_fields_flags field)
705 #define LPROCFS_ENTRY()
706 #define LPROCFS_EXIT()
707 #define LPROCFS_ENTRY_AND_CHECK(dp)
708 #define LPROC_SEQ_FOPS_RO(name)
709 #define LPROC_SEQ_FOPS(name)
712 #define target_print_req NULL
716 #endif /* LPROCFS_SNMP_H */