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Merge tag 'armsoc-cleanup' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
[mirror_ubuntu-eoan-kernel.git] / drivers / staging / lustre / lustre / include / lprocfs_status.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, 2012, 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 * lustre/include/lprocfs_status.h
37 *
38 * Top level header file for LProc SNMP
39 *
40 * Author: Hariharan Thantry thantry@users.sourceforge.net
41 */
42 #ifndef _LPROCFS_SNMP_H
43 #define _LPROCFS_SNMP_H
44
45 #include <linux/debugfs.h>
46 #include <linux/seq_file.h>
47 #include <linux/spinlock.h>
48 #include <linux/types.h>
49
50 #include "lustre/lustre_idl.h"
51
52 struct lprocfs_vars {
53 const char *name;
54 struct file_operations *fops;
55 void *data;
56 /**
57 * /proc file mode.
58 */
59 umode_t proc_mode;
60 };
61
62 struct lprocfs_static_vars {
63 struct lprocfs_vars *obd_vars;
64 struct attribute_group *sysfs_vars;
65 };
66
67 /* if we find more consumers this could be generalized */
68 #define OBD_HIST_MAX 32
69 struct obd_histogram {
70 spinlock_t oh_lock;
71 unsigned long oh_buckets[OBD_HIST_MAX];
72 };
73
74 enum {
75 BRW_R_PAGES = 0,
76 BRW_W_PAGES,
77 BRW_R_RPC_HIST,
78 BRW_W_RPC_HIST,
79 BRW_R_IO_TIME,
80 BRW_W_IO_TIME,
81 BRW_R_DISCONT_PAGES,
82 BRW_W_DISCONT_PAGES,
83 BRW_R_DISCONT_BLOCKS,
84 BRW_W_DISCONT_BLOCKS,
85 BRW_R_DISK_IOSIZE,
86 BRW_W_DISK_IOSIZE,
87 BRW_R_DIO_FRAGS,
88 BRW_W_DIO_FRAGS,
89 BRW_LAST,
90 };
91
92 struct brw_stats {
93 struct obd_histogram hist[BRW_LAST];
94 };
95
96 enum {
97 RENAME_SAMEDIR_SIZE = 0,
98 RENAME_CROSSDIR_SRC_SIZE,
99 RENAME_CROSSDIR_TGT_SIZE,
100 RENAME_LAST,
101 };
102
103 struct rename_stats {
104 struct obd_histogram hist[RENAME_LAST];
105 };
106
107 /* An lprocfs counter can be configured using the enum bit masks below.
108 *
109 * LPROCFS_CNTR_EXTERNALLOCK indicates that an external lock already
110 * protects this counter from concurrent updates. If not specified,
111 * lprocfs an internal per-counter lock variable. External locks are
112 * not used to protect counter increments, but are used to protect
113 * counter readout and resets.
114 *
115 * LPROCFS_CNTR_AVGMINMAX indicates a multi-valued counter samples,
116 * (i.e. counter can be incremented by more than "1"). When specified,
117 * the counter maintains min, max and sum in addition to a simple
118 * invocation count. This allows averages to be be computed.
119 * If not specified, the counter is an increment-by-1 counter.
120 * min, max, sum, etc. are not maintained.
121 *
122 * LPROCFS_CNTR_STDDEV indicates that the counter should track sum of
123 * squares (for multi-valued counter samples only). This allows
124 * external computation of standard deviation, but involves a 64-bit
125 * multiply per counter increment.
126 */
127
128 enum {
129 LPROCFS_CNTR_EXTERNALLOCK = 0x0001,
130 LPROCFS_CNTR_AVGMINMAX = 0x0002,
131 LPROCFS_CNTR_STDDEV = 0x0004,
132
133 /* counter data type */
134 LPROCFS_TYPE_REGS = 0x0100,
135 LPROCFS_TYPE_BYTES = 0x0200,
136 LPROCFS_TYPE_PAGES = 0x0400,
137 LPROCFS_TYPE_CYCLE = 0x0800,
138 };
139
140 #define LC_MIN_INIT ((~(__u64)0) >> 1)
141
142 struct lprocfs_counter_header {
143 unsigned int lc_config;
144 const char *lc_name; /* must be static */
145 const char *lc_units; /* must be static */
146 };
147
148 struct lprocfs_counter {
149 __s64 lc_count;
150 __s64 lc_min;
151 __s64 lc_max;
152 __s64 lc_sumsquare;
153 /*
154 * Every counter has lc_array_sum[0], while lc_array_sum[1] is only
155 * for irq context counter, i.e. stats with
156 * LPROCFS_STATS_FLAG_IRQ_SAFE flag, its counter need
157 * lc_array_sum[1]
158 */
159 __s64 lc_array_sum[1];
160 };
161 #define lc_sum lc_array_sum[0]
162 #define lc_sum_irq lc_array_sum[1]
163
164 struct lprocfs_percpu {
165 #ifndef __GNUC__
166 __s64 pad;
167 #endif
168 struct lprocfs_counter lp_cntr[0];
169 };
170
171 #define LPROCFS_GET_NUM_CPU 0x0001
172 #define LPROCFS_GET_SMP_ID 0x0002
173
174 enum lprocfs_stats_flags {
175 LPROCFS_STATS_FLAG_NONE = 0x0000, /* per cpu counter */
176 LPROCFS_STATS_FLAG_NOPERCPU = 0x0001, /* stats have no percpu
177 * area and need locking */
178 LPROCFS_STATS_FLAG_IRQ_SAFE = 0x0002, /* alloc need irq safe */
179 };
180
181 enum lprocfs_fields_flags {
182 LPROCFS_FIELDS_FLAGS_CONFIG = 0x0001,
183 LPROCFS_FIELDS_FLAGS_SUM = 0x0002,
184 LPROCFS_FIELDS_FLAGS_MIN = 0x0003,
185 LPROCFS_FIELDS_FLAGS_MAX = 0x0004,
186 LPROCFS_FIELDS_FLAGS_AVG = 0x0005,
187 LPROCFS_FIELDS_FLAGS_SUMSQUARE = 0x0006,
188 LPROCFS_FIELDS_FLAGS_COUNT = 0x0007,
189 };
190
191 struct lprocfs_stats {
192 /* # of counters */
193 unsigned short ls_num;
194 /* 1 + the biggest cpu # whose ls_percpu slot has been allocated */
195 unsigned short ls_biggest_alloc_num;
196 enum lprocfs_stats_flags ls_flags;
197 /* Lock used when there are no percpu stats areas; For percpu stats,
198 * it is used to protect ls_biggest_alloc_num change */
199 spinlock_t ls_lock;
200
201 /* has ls_num of counter headers */
202 struct lprocfs_counter_header *ls_cnt_header;
203 struct lprocfs_percpu *ls_percpu[0];
204 };
205
206 #define OPC_RANGE(seg) (seg ## _LAST_OPC - seg ## _FIRST_OPC)
207
208 /* Pack all opcodes down into a single monotonically increasing index */
209 static inline int opcode_offset(__u32 opc) {
210 if (opc < OST_LAST_OPC) {
211 /* OST opcode */
212 return (opc - OST_FIRST_OPC);
213 } else if (opc < MDS_LAST_OPC) {
214 /* MDS opcode */
215 return (opc - MDS_FIRST_OPC +
216 OPC_RANGE(OST));
217 } else if (opc < LDLM_LAST_OPC) {
218 /* LDLM Opcode */
219 return (opc - LDLM_FIRST_OPC +
220 OPC_RANGE(MDS) +
221 OPC_RANGE(OST));
222 } else if (opc < MGS_LAST_OPC) {
223 /* MGS Opcode */
224 return (opc - MGS_FIRST_OPC +
225 OPC_RANGE(LDLM) +
226 OPC_RANGE(MDS) +
227 OPC_RANGE(OST));
228 } else if (opc < OBD_LAST_OPC) {
229 /* OBD Ping */
230 return (opc - OBD_FIRST_OPC +
231 OPC_RANGE(MGS) +
232 OPC_RANGE(LDLM) +
233 OPC_RANGE(MDS) +
234 OPC_RANGE(OST));
235 } else if (opc < LLOG_LAST_OPC) {
236 /* LLOG Opcode */
237 return (opc - LLOG_FIRST_OPC +
238 OPC_RANGE(OBD) +
239 OPC_RANGE(MGS) +
240 OPC_RANGE(LDLM) +
241 OPC_RANGE(MDS) +
242 OPC_RANGE(OST));
243 } else if (opc < QUOTA_LAST_OPC) {
244 /* LQUOTA Opcode */
245 return (opc - QUOTA_FIRST_OPC +
246 OPC_RANGE(LLOG) +
247 OPC_RANGE(OBD) +
248 OPC_RANGE(MGS) +
249 OPC_RANGE(LDLM) +
250 OPC_RANGE(MDS) +
251 OPC_RANGE(OST));
252 } else if (opc < SEQ_LAST_OPC) {
253 /* SEQ opcode */
254 return (opc - SEQ_FIRST_OPC +
255 OPC_RANGE(QUOTA) +
256 OPC_RANGE(LLOG) +
257 OPC_RANGE(OBD) +
258 OPC_RANGE(MGS) +
259 OPC_RANGE(LDLM) +
260 OPC_RANGE(MDS) +
261 OPC_RANGE(OST));
262 } else if (opc < SEC_LAST_OPC) {
263 /* SEC opcode */
264 return (opc - SEC_FIRST_OPC +
265 OPC_RANGE(SEQ) +
266 OPC_RANGE(QUOTA) +
267 OPC_RANGE(LLOG) +
268 OPC_RANGE(OBD) +
269 OPC_RANGE(MGS) +
270 OPC_RANGE(LDLM) +
271 OPC_RANGE(MDS) +
272 OPC_RANGE(OST));
273 } else if (opc < FLD_LAST_OPC) {
274 /* FLD opcode */
275 return (opc - FLD_FIRST_OPC +
276 OPC_RANGE(SEC) +
277 OPC_RANGE(SEQ) +
278 OPC_RANGE(QUOTA) +
279 OPC_RANGE(LLOG) +
280 OPC_RANGE(OBD) +
281 OPC_RANGE(MGS) +
282 OPC_RANGE(LDLM) +
283 OPC_RANGE(MDS) +
284 OPC_RANGE(OST));
285 } else if (opc < UPDATE_LAST_OPC) {
286 /* update opcode */
287 return (opc - UPDATE_FIRST_OPC +
288 OPC_RANGE(FLD) +
289 OPC_RANGE(SEC) +
290 OPC_RANGE(SEQ) +
291 OPC_RANGE(QUOTA) +
292 OPC_RANGE(LLOG) +
293 OPC_RANGE(OBD) +
294 OPC_RANGE(MGS) +
295 OPC_RANGE(LDLM) +
296 OPC_RANGE(MDS) +
297 OPC_RANGE(OST));
298 } else {
299 /* Unknown Opcode */
300 return -1;
301 }
302 }
303
304
305 #define LUSTRE_MAX_OPCODES (OPC_RANGE(OST) + \
306 OPC_RANGE(MDS) + \
307 OPC_RANGE(LDLM) + \
308 OPC_RANGE(MGS) + \
309 OPC_RANGE(OBD) + \
310 OPC_RANGE(LLOG) + \
311 OPC_RANGE(SEC) + \
312 OPC_RANGE(SEQ) + \
313 OPC_RANGE(SEC) + \
314 OPC_RANGE(FLD) + \
315 OPC_RANGE(UPDATE))
316
317 #define EXTRA_MAX_OPCODES ((PTLRPC_LAST_CNTR - PTLRPC_FIRST_CNTR) + \
318 OPC_RANGE(EXTRA))
319
320 enum {
321 PTLRPC_REQWAIT_CNTR = 0,
322 PTLRPC_REQQDEPTH_CNTR,
323 PTLRPC_REQACTIVE_CNTR,
324 PTLRPC_TIMEOUT,
325 PTLRPC_REQBUF_AVAIL_CNTR,
326 PTLRPC_LAST_CNTR
327 };
328
329 #define PTLRPC_FIRST_CNTR PTLRPC_REQWAIT_CNTR
330
331 enum {
332 LDLM_GLIMPSE_ENQUEUE = 0,
333 LDLM_PLAIN_ENQUEUE,
334 LDLM_EXTENT_ENQUEUE,
335 LDLM_FLOCK_ENQUEUE,
336 LDLM_IBITS_ENQUEUE,
337 MDS_REINT_SETATTR,
338 MDS_REINT_CREATE,
339 MDS_REINT_LINK,
340 MDS_REINT_UNLINK,
341 MDS_REINT_RENAME,
342 MDS_REINT_OPEN,
343 MDS_REINT_SETXATTR,
344 BRW_READ_BYTES,
345 BRW_WRITE_BYTES,
346 EXTRA_LAST_OPC
347 };
348
349 #define EXTRA_FIRST_OPC LDLM_GLIMPSE_ENQUEUE
350 /* class_obd.c */
351 extern struct dentry *debugfs_lustre_root;
352 extern struct kobject *lustre_kobj;
353
354 struct obd_device;
355 struct obd_histogram;
356
357 /* Days / hours / mins / seconds format */
358 struct dhms {
359 int d, h, m, s;
360 };
361 static inline void s2dhms(struct dhms *ts, time_t secs)
362 {
363 ts->d = secs / 86400;
364 secs = secs % 86400;
365 ts->h = secs / 3600;
366 secs = secs % 3600;
367 ts->m = secs / 60;
368 ts->s = secs % 60;
369 }
370 #define DHMS_FMT "%dd%dh%02dm%02ds"
371 #define DHMS_VARS(x) (x)->d, (x)->h, (x)->m, (x)->s
372
373 #define JOBSTATS_JOBID_VAR_MAX_LEN 20
374 #define JOBSTATS_DISABLE "disable"
375 #define JOBSTATS_PROCNAME_UID "procname_uid"
376 #define JOBSTATS_NODELOCAL "nodelocal"
377
378 int lprocfs_write_frac_helper(const char __user *buffer,
379 unsigned long count, int *val, int mult);
380 int lprocfs_read_frac_helper(char *buffer, unsigned long count,
381 long val, int mult);
382 int lprocfs_stats_alloc_one(struct lprocfs_stats *stats, unsigned int cpuid);
383 /*
384 * \return value
385 * < 0 : on error (only possible for opc as LPROCFS_GET_SMP_ID)
386 */
387 static inline int lprocfs_stats_lock(struct lprocfs_stats *stats, int opc,
388 unsigned long *flags)
389 {
390 int rc = 0;
391
392 switch (opc) {
393 default:
394 LBUG();
395
396 case LPROCFS_GET_SMP_ID:
397 if (stats->ls_flags & LPROCFS_STATS_FLAG_NOPERCPU) {
398 if (stats->ls_flags & LPROCFS_STATS_FLAG_IRQ_SAFE)
399 spin_lock_irqsave(&stats->ls_lock, *flags);
400 else
401 spin_lock(&stats->ls_lock);
402 return 0;
403 } else {
404 unsigned int cpuid = get_cpu();
405
406 if (unlikely(stats->ls_percpu[cpuid] == NULL)) {
407 rc = lprocfs_stats_alloc_one(stats, cpuid);
408 if (rc < 0) {
409 put_cpu();
410 return rc;
411 }
412 }
413 return cpuid;
414 }
415
416 case LPROCFS_GET_NUM_CPU:
417 if (stats->ls_flags & LPROCFS_STATS_FLAG_NOPERCPU) {
418 if (stats->ls_flags & LPROCFS_STATS_FLAG_IRQ_SAFE)
419 spin_lock_irqsave(&stats->ls_lock, *flags);
420 else
421 spin_lock(&stats->ls_lock);
422 return 1;
423 }
424 return stats->ls_biggest_alloc_num;
425 }
426 }
427
428 static inline void lprocfs_stats_unlock(struct lprocfs_stats *stats, int opc,
429 unsigned long *flags)
430 {
431 switch (opc) {
432 default:
433 LBUG();
434
435 case LPROCFS_GET_SMP_ID:
436 if (stats->ls_flags & LPROCFS_STATS_FLAG_NOPERCPU) {
437 if (stats->ls_flags & LPROCFS_STATS_FLAG_IRQ_SAFE) {
438 spin_unlock_irqrestore(&stats->ls_lock,
439 *flags);
440 } else {
441 spin_unlock(&stats->ls_lock);
442 }
443 } else {
444 put_cpu();
445 }
446 return;
447
448 case LPROCFS_GET_NUM_CPU:
449 if (stats->ls_flags & LPROCFS_STATS_FLAG_NOPERCPU) {
450 if (stats->ls_flags & LPROCFS_STATS_FLAG_IRQ_SAFE) {
451 spin_unlock_irqrestore(&stats->ls_lock,
452 *flags);
453 } else {
454 spin_unlock(&stats->ls_lock);
455 }
456 }
457 return;
458 }
459 }
460
461 static inline unsigned int
462 lprocfs_stats_counter_size(struct lprocfs_stats *stats)
463 {
464 unsigned int percpusize;
465
466 percpusize = offsetof(struct lprocfs_percpu, lp_cntr[stats->ls_num]);
467
468 /* irq safe stats need lc_array_sum[1] */
469 if ((stats->ls_flags & LPROCFS_STATS_FLAG_IRQ_SAFE) != 0)
470 percpusize += stats->ls_num * sizeof(__s64);
471
472 if ((stats->ls_flags & LPROCFS_STATS_FLAG_NOPERCPU) == 0)
473 percpusize = L1_CACHE_ALIGN(percpusize);
474
475 return percpusize;
476 }
477
478 static inline struct lprocfs_counter *
479 lprocfs_stats_counter_get(struct lprocfs_stats *stats, unsigned int cpuid,
480 int index)
481 {
482 struct lprocfs_counter *cntr;
483
484 cntr = &stats->ls_percpu[cpuid]->lp_cntr[index];
485
486 if ((stats->ls_flags & LPROCFS_STATS_FLAG_IRQ_SAFE) != 0)
487 cntr = (void *)cntr + index * sizeof(__s64);
488
489 return cntr;
490 }
491
492 /* Two optimized LPROCFS counter increment functions are provided:
493 * lprocfs_counter_incr(cntr, value) - optimized for by-one counters
494 * lprocfs_counter_add(cntr) - use for multi-valued counters
495 * Counter data layout allows config flag, counter lock and the
496 * count itself to reside within a single cache line.
497 */
498
499 void lprocfs_counter_add(struct lprocfs_stats *stats, int idx, long amount);
500 void lprocfs_counter_sub(struct lprocfs_stats *stats, int idx, long amount);
501
502 #define lprocfs_counter_incr(stats, idx) \
503 lprocfs_counter_add(stats, idx, 1)
504 #define lprocfs_counter_decr(stats, idx) \
505 lprocfs_counter_sub(stats, idx, 1)
506
507 __s64 lprocfs_read_helper(struct lprocfs_counter *lc,
508 struct lprocfs_counter_header *header,
509 enum lprocfs_stats_flags flags,
510 enum lprocfs_fields_flags field);
511 static inline __u64 lprocfs_stats_collector(struct lprocfs_stats *stats,
512 int idx,
513 enum lprocfs_fields_flags field)
514 {
515 int i;
516 unsigned int num_cpu;
517 unsigned long flags = 0;
518 __u64 ret = 0;
519
520 LASSERT(stats != NULL);
521
522 num_cpu = lprocfs_stats_lock(stats, LPROCFS_GET_NUM_CPU, &flags);
523 for (i = 0; i < num_cpu; i++) {
524 if (stats->ls_percpu[i] == NULL)
525 continue;
526 ret += lprocfs_read_helper(
527 lprocfs_stats_counter_get(stats, i, idx),
528 &stats->ls_cnt_header[idx], stats->ls_flags,
529 field);
530 }
531 lprocfs_stats_unlock(stats, LPROCFS_GET_NUM_CPU, &flags);
532 return ret;
533 }
534
535 extern struct lprocfs_stats *
536 lprocfs_alloc_stats(unsigned int num, enum lprocfs_stats_flags flags);
537 void lprocfs_clear_stats(struct lprocfs_stats *stats);
538 void lprocfs_free_stats(struct lprocfs_stats **stats);
539 void lprocfs_init_ops_stats(int num_private_stats, struct lprocfs_stats *stats);
540 void lprocfs_init_mps_stats(int num_private_stats, struct lprocfs_stats *stats);
541 void lprocfs_init_ldlm_stats(struct lprocfs_stats *ldlm_stats);
542 int lprocfs_alloc_obd_stats(struct obd_device *obddev,
543 unsigned int num_private_stats);
544 int lprocfs_alloc_md_stats(struct obd_device *obddev,
545 unsigned int num_private_stats);
546 void lprocfs_counter_init(struct lprocfs_stats *stats, int index,
547 unsigned conf, const char *name, const char *units);
548 void lprocfs_free_obd_stats(struct obd_device *obddev);
549 void lprocfs_free_md_stats(struct obd_device *obddev);
550 struct obd_export;
551 int lprocfs_exp_cleanup(struct obd_export *exp);
552 struct dentry *ldebugfs_add_simple(struct dentry *root,
553 char *name,
554 void *data,
555 struct file_operations *fops);
556 struct dentry *
557 ldebugfs_add_symlink(const char *name, struct dentry *parent,
558 const char *format, ...);
559
560 int ldebugfs_register_stats(struct dentry *parent,
561 const char *name,
562 struct lprocfs_stats *stats);
563
564 /* lprocfs_status.c */
565 int ldebugfs_add_vars(struct dentry *parent,
566 struct lprocfs_vars *var,
567 void *data);
568
569 struct dentry *ldebugfs_register(const char *name,
570 struct dentry *parent,
571 struct lprocfs_vars *list,
572 void *data);
573
574 void ldebugfs_remove(struct dentry **entryp);
575
576 int lprocfs_obd_setup(struct obd_device *obd, struct lprocfs_vars *list,
577 struct attribute_group *attrs);
578 int lprocfs_obd_cleanup(struct obd_device *obd);
579
580 int ldebugfs_seq_create(struct dentry *parent,
581 const char *name,
582 umode_t mode,
583 const struct file_operations *seq_fops,
584 void *data);
585 int ldebugfs_obd_seq_create(struct obd_device *dev,
586 const char *name,
587 umode_t mode,
588 const struct file_operations *seq_fops,
589 void *data);
590
591 /* Generic callbacks */
592
593 int lprocfs_rd_u64(struct seq_file *m, void *data);
594 int lprocfs_rd_atomic(struct seq_file *m, void *data);
595 int lprocfs_wr_atomic(struct file *file, const char __user *buffer,
596 unsigned long count, void *data);
597 int lprocfs_rd_uint(struct seq_file *m, void *data);
598 int lprocfs_wr_uint(struct file *file, const char __user *buffer,
599 unsigned long count, void *data);
600 int lprocfs_rd_name(struct seq_file *m, void *data);
601 int lprocfs_rd_server_uuid(struct seq_file *m, void *data);
602 int lprocfs_rd_conn_uuid(struct seq_file *m, void *data);
603 int lprocfs_rd_import(struct seq_file *m, void *data);
604 int lprocfs_rd_state(struct seq_file *m, void *data);
605 int lprocfs_rd_connect_flags(struct seq_file *m, void *data);
606
607 struct adaptive_timeout;
608 int lprocfs_at_hist_helper(struct seq_file *m, struct adaptive_timeout *at);
609 int lprocfs_rd_timeouts(struct seq_file *m, void *data);
610 int lprocfs_wr_timeouts(struct file *file, const char __user *buffer,
611 unsigned long count, void *data);
612 int lprocfs_wr_evict_client(struct file *file, const char __user *buffer,
613 size_t count, loff_t *off);
614 int lprocfs_wr_ping(struct file *file, const char __user *buffer,
615 size_t count, loff_t *off);
616 int lprocfs_wr_import(struct file *file, const char __user *buffer,
617 size_t count, loff_t *off);
618 int lprocfs_rd_pinger_recov(struct seq_file *m, void *n);
619 int lprocfs_wr_pinger_recov(struct file *file, const char __user *buffer,
620 size_t count, loff_t *off);
621
622 /* Statfs helpers */
623
624 int lprocfs_write_helper(const char __user *buffer, unsigned long count,
625 int *val);
626 int lprocfs_seq_read_frac_helper(struct seq_file *m, long val, int mult);
627 int lprocfs_write_u64_helper(const char __user *buffer,
628 unsigned long count, __u64 *val);
629 int lprocfs_write_frac_u64_helper(const char *buffer,
630 unsigned long count,
631 __u64 *val, int mult);
632 char *lprocfs_find_named_value(const char *buffer, const char *name,
633 size_t *count);
634 void lprocfs_oh_tally(struct obd_histogram *oh, unsigned int value);
635 void lprocfs_oh_tally_log2(struct obd_histogram *oh, unsigned int value);
636 void lprocfs_oh_clear(struct obd_histogram *oh);
637 unsigned long lprocfs_oh_sum(struct obd_histogram *oh);
638
639 void lprocfs_stats_collect(struct lprocfs_stats *stats, int idx,
640 struct lprocfs_counter *cnt);
641
642 int lprocfs_single_release(struct inode *, struct file *);
643 int lprocfs_seq_release(struct inode *, struct file *);
644
645 /* You must use these macros when you want to refer to
646 * the import in a client obd_device for a lprocfs entry */
647 #define LPROCFS_CLIMP_CHECK(obd) do { \
648 typecheck(struct obd_device *, obd); \
649 down_read(&(obd)->u.cli.cl_sem); \
650 if ((obd)->u.cli.cl_import == NULL) { \
651 up_read(&(obd)->u.cli.cl_sem); \
652 return -ENODEV; \
653 } \
654 } while (0)
655 #define LPROCFS_CLIMP_EXIT(obd) \
656 up_read(&(obd)->u.cli.cl_sem)
657
658
659 /* write the name##_seq_show function, call LPROC_SEQ_FOPS_RO for read-only
660 proc entries; otherwise, you will define name##_seq_write function also for
661 a read-write proc entry, and then call LPROC_SEQ_SEQ instead. Finally,
662 call ldebugfs_obd_seq_create(obd, filename, 0444, &name#_fops, data); */
663 #define __LPROC_SEQ_FOPS(name, custom_seq_write) \
664 static int name##_single_open(struct inode *inode, struct file *file) \
665 { \
666 return single_open(file, name##_seq_show, inode->i_private); \
667 } \
668 static struct file_operations name##_fops = { \
669 .owner = THIS_MODULE, \
670 .open = name##_single_open, \
671 .read = seq_read, \
672 .write = custom_seq_write, \
673 .llseek = seq_lseek, \
674 .release = lprocfs_single_release, \
675 }
676
677 #define LPROC_SEQ_FOPS_RO(name) __LPROC_SEQ_FOPS(name, NULL)
678 #define LPROC_SEQ_FOPS(name) __LPROC_SEQ_FOPS(name, name##_seq_write)
679
680 #define LPROC_SEQ_FOPS_RO_TYPE(name, type) \
681 static int name##_##type##_seq_show(struct seq_file *m, void *v)\
682 { \
683 return lprocfs_rd_##type(m, m->private); \
684 } \
685 LPROC_SEQ_FOPS_RO(name##_##type)
686
687 #define LPROC_SEQ_FOPS_RW_TYPE(name, type) \
688 static int name##_##type##_seq_show(struct seq_file *m, void *v)\
689 { \
690 return lprocfs_rd_##type(m, m->private); \
691 } \
692 static ssize_t name##_##type##_seq_write(struct file *file, \
693 const char __user *buffer, size_t count, \
694 loff_t *off) \
695 { \
696 struct seq_file *seq = file->private_data; \
697 return lprocfs_wr_##type(file, buffer, \
698 count, seq->private); \
699 } \
700 LPROC_SEQ_FOPS(name##_##type)
701
702 #define LPROC_SEQ_FOPS_WR_ONLY(name, type) \
703 static ssize_t name##_##type##_write(struct file *file, \
704 const char __user *buffer, size_t count, \
705 loff_t *off) \
706 { \
707 return lprocfs_wr_##type(file, buffer, count, off); \
708 } \
709 static int name##_##type##_open(struct inode *inode, struct file *file) \
710 { \
711 return single_open(file, NULL, inode->i_private); \
712 } \
713 static struct file_operations name##_##type##_fops = { \
714 .open = name##_##type##_open, \
715 .write = name##_##type##_write, \
716 .release = lprocfs_single_release, \
717 }
718
719 struct lustre_attr {
720 struct attribute attr;
721 ssize_t (*show)(struct kobject *kobj, struct attribute *attr,
722 char *buf);
723 ssize_t (*store)(struct kobject *kobj, struct attribute *attr,
724 const char *buf, size_t len);
725 };
726
727 #define LUSTRE_ATTR(name, mode, show, store) \
728 static struct lustre_attr lustre_attr_##name = __ATTR(name, mode, show, store)
729
730 #define LUSTRE_RO_ATTR(name) LUSTRE_ATTR(name, 0444, name##_show, NULL)
731 #define LUSTRE_RW_ATTR(name) LUSTRE_ATTR(name, 0644, name##_show, name##_store)
732
733 ssize_t lustre_attr_show(struct kobject *kobj, struct attribute *attr,
734 char *buf);
735 ssize_t lustre_attr_store(struct kobject *kobj, struct attribute *attr,
736 const char *buf, size_t len);
737
738 extern const struct sysfs_ops lustre_sysfs_ops;
739
740 /* lproc_ptlrpc.c */
741 struct ptlrpc_request;
742 void target_print_req(void *seq_file, struct ptlrpc_request *req);
743
744 /* lproc_status.c */
745 int lprocfs_obd_rd_max_pages_per_rpc(struct seq_file *m, void *data);
746 int lprocfs_obd_wr_max_pages_per_rpc(struct file *file, const char *buffer,
747 size_t count, loff_t *off);
748
749 /* all quota proc functions */
750 int lprocfs_quota_rd_bunit(char *page, char **start,
751 loff_t off, int count,
752 int *eof, void *data);
753 int lprocfs_quota_wr_bunit(struct file *file, const char *buffer,
754 unsigned long count, void *data);
755 int lprocfs_quota_rd_btune(char *page, char **start,
756 loff_t off, int count,
757 int *eof, void *data);
758 int lprocfs_quota_wr_btune(struct file *file, const char *buffer,
759 unsigned long count, void *data);
760 int lprocfs_quota_rd_iunit(char *page, char **start,
761 loff_t off, int count,
762 int *eof, void *data);
763 int lprocfs_quota_wr_iunit(struct file *file, const char *buffer,
764 unsigned long count, void *data);
765 int lprocfs_quota_rd_itune(char *page, char **start,
766 loff_t off, int count,
767 int *eof, void *data);
768 int lprocfs_quota_wr_itune(struct file *file, const char *buffer,
769 unsigned long count, void *data);
770 int lprocfs_quota_rd_type(char *page, char **start, loff_t off, int count,
771 int *eof, void *data);
772 int lprocfs_quota_wr_type(struct file *file, const char *buffer,
773 unsigned long count, void *data);
774 int lprocfs_quota_rd_switch_seconds(char *page, char **start, loff_t off,
775 int count, int *eof, void *data);
776 int lprocfs_quota_wr_switch_seconds(struct file *file,
777 const char *buffer,
778 unsigned long count, void *data);
779 int lprocfs_quota_rd_sync_blk(char *page, char **start, loff_t off,
780 int count, int *eof, void *data);
781 int lprocfs_quota_wr_sync_blk(struct file *file, const char *buffer,
782 unsigned long count, void *data);
783 int lprocfs_quota_rd_switch_qs(char *page, char **start, loff_t off,
784 int count, int *eof, void *data);
785 int lprocfs_quota_wr_switch_qs(struct file *file,
786 const char *buffer, unsigned long count,
787 void *data);
788 int lprocfs_quota_rd_boundary_factor(char *page, char **start, loff_t off,
789 int count, int *eof, void *data);
790 int lprocfs_quota_wr_boundary_factor(struct file *file,
791 const char *buffer, unsigned long count,
792 void *data);
793 int lprocfs_quota_rd_least_bunit(char *page, char **start, loff_t off,
794 int count, int *eof, void *data);
795 int lprocfs_quota_wr_least_bunit(struct file *file,
796 const char *buffer, unsigned long count,
797 void *data);
798 int lprocfs_quota_rd_least_iunit(char *page, char **start, loff_t off,
799 int count, int *eof, void *data);
800 int lprocfs_quota_wr_least_iunit(struct file *file,
801 const char *buffer, unsigned long count,
802 void *data);
803 int lprocfs_quota_rd_qs_factor(char *page, char **start, loff_t off,
804 int count, int *eof, void *data);
805 int lprocfs_quota_wr_qs_factor(struct file *file,
806 const char *buffer, unsigned long count,
807 void *data);
808 #endif /* LPROCFS_SNMP_H */
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