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Merge branch 'for-3.15' of git://linux-nfs.org/~bfields/linux
[deliverable/linux.git] / drivers / staging / lustre / lustre / obdclass / lprocfs_status.c
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) 2002, 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/obdclass/lprocfs_status.c
37 *
38 * Author: Hariharan Thantry <thantry@users.sourceforge.net>
39 */
40
41 #define DEBUG_SUBSYSTEM S_CLASS
42
43
44 #include <obd_class.h>
45 #include <lprocfs_status.h>
46 #include <lustre/lustre_idl.h>
47 #include <linux/seq_file.h>
48
49 static const char * const obd_connect_names[] = {
50 "read_only",
51 "lov_index",
52 "unused",
53 "write_grant",
54 "server_lock",
55 "version",
56 "request_portal",
57 "acl",
58 "xattr",
59 "create_on_write",
60 "truncate_lock",
61 "initial_transno",
62 "inode_bit_locks",
63 "join_file(obsolete)",
64 "getattr_by_fid",
65 "no_oh_for_devices",
66 "remote_client",
67 "remote_client_by_force",
68 "max_byte_per_rpc",
69 "64bit_qdata",
70 "mds_capability",
71 "oss_capability",
72 "early_lock_cancel",
73 "som",
74 "adaptive_timeouts",
75 "lru_resize",
76 "mds_mds_connection",
77 "real_conn",
78 "change_qunit_size",
79 "alt_checksum_algorithm",
80 "fid_is_enabled",
81 "version_recovery",
82 "pools",
83 "grant_shrink",
84 "skip_orphan",
85 "large_ea",
86 "full20",
87 "layout_lock",
88 "64bithash",
89 "object_max_bytes",
90 "imp_recov",
91 "jobstats",
92 "umask",
93 "einprogress",
94 "grant_param",
95 "flock_owner",
96 "lvb_type",
97 "nanoseconds_times",
98 "lightweight_conn",
99 "short_io",
100 "pingless",
101 "flock_deadlock",
102 "disp_stripe",
103 "unknown",
104 NULL
105 };
106
107 int obd_connect_flags2str(char *page, int count, __u64 flags, char *sep)
108 {
109 __u64 mask = 1;
110 int i, ret = 0;
111
112 for (i = 0; obd_connect_names[i] != NULL; i++, mask <<= 1) {
113 if (flags & mask)
114 ret += snprintf(page + ret, count - ret, "%s%s",
115 ret ? sep : "", obd_connect_names[i]);
116 }
117 if (flags & ~(mask - 1))
118 ret += snprintf(page + ret, count - ret,
119 "%sunknown flags "LPX64,
120 ret ? sep : "", flags & ~(mask - 1));
121 return ret;
122 }
123 EXPORT_SYMBOL(obd_connect_flags2str);
124
125 int lprocfs_read_frac_helper(char *buffer, unsigned long count, long val,
126 int mult)
127 {
128 long decimal_val, frac_val;
129 int prtn;
130
131 if (count < 10)
132 return -EINVAL;
133
134 decimal_val = val / mult;
135 prtn = snprintf(buffer, count, "%ld", decimal_val);
136 frac_val = val % mult;
137
138 if (prtn < (count - 4) && frac_val > 0) {
139 long temp_frac;
140 int i, temp_mult = 1, frac_bits = 0;
141
142 temp_frac = frac_val * 10;
143 buffer[prtn++] = '.';
144 while (frac_bits < 2 && (temp_frac / mult) < 1) {
145 /* only reserved 2 bits fraction */
146 buffer[prtn++] = '0';
147 temp_frac *= 10;
148 frac_bits++;
149 }
150 /*
151 * Need to think these cases :
152 * 1. #echo x.00 > /proc/xxx output result : x
153 * 2. #echo x.0x > /proc/xxx output result : x.0x
154 * 3. #echo x.x0 > /proc/xxx output result : x.x
155 * 4. #echo x.xx > /proc/xxx output result : x.xx
156 * Only reserved 2 bits fraction.
157 */
158 for (i = 0; i < (5 - prtn); i++)
159 temp_mult *= 10;
160
161 frac_bits = min((int)count - prtn, 3 - frac_bits);
162 prtn += snprintf(buffer + prtn, frac_bits, "%ld",
163 frac_val * temp_mult / mult);
164
165 prtn--;
166 while (buffer[prtn] < '1' || buffer[prtn] > '9') {
167 prtn--;
168 if (buffer[prtn] == '.') {
169 prtn--;
170 break;
171 }
172 }
173 prtn++;
174 }
175 buffer[prtn++] = '\n';
176 return prtn;
177 }
178 EXPORT_SYMBOL(lprocfs_read_frac_helper);
179
180 int lprocfs_write_frac_helper(const char *buffer, unsigned long count,
181 int *val, int mult)
182 {
183 char kernbuf[20], *end, *pbuf;
184
185 if (count > (sizeof(kernbuf) - 1))
186 return -EINVAL;
187
188 if (copy_from_user(kernbuf, buffer, count))
189 return -EFAULT;
190
191 kernbuf[count] = '\0';
192 pbuf = kernbuf;
193 if (*pbuf == '-') {
194 mult = -mult;
195 pbuf++;
196 }
197
198 *val = (int)simple_strtoul(pbuf, &end, 10) * mult;
199 if (pbuf == end)
200 return -EINVAL;
201
202 if (end != NULL && *end == '.') {
203 int temp_val, pow = 1;
204 int i;
205
206 pbuf = end + 1;
207 if (strlen(pbuf) > 5)
208 pbuf[5] = '\0'; /*only allow 5bits fractional*/
209
210 temp_val = (int)simple_strtoul(pbuf, &end, 10) * mult;
211
212 if (pbuf < end) {
213 for (i = 0; i < (end - pbuf); i++)
214 pow *= 10;
215
216 *val += temp_val / pow;
217 }
218 }
219 return 0;
220 }
221 EXPORT_SYMBOL(lprocfs_write_frac_helper);
222
223 #ifdef LPROCFS
224
225 static int lprocfs_no_percpu_stats = 0;
226 module_param(lprocfs_no_percpu_stats, int, 0644);
227 MODULE_PARM_DESC(lprocfs_no_percpu_stats, "Do not alloc percpu data for lprocfs stats");
228
229 #define MAX_STRING_SIZE 128
230
231 int lprocfs_single_release(struct inode *inode, struct file *file)
232 {
233 return single_release(inode, file);
234 }
235 EXPORT_SYMBOL(lprocfs_single_release);
236
237 int lprocfs_seq_release(struct inode *inode, struct file *file)
238 {
239 return seq_release(inode, file);
240 }
241 EXPORT_SYMBOL(lprocfs_seq_release);
242
243 /* lprocfs API calls */
244
245 struct proc_dir_entry *lprocfs_add_simple(struct proc_dir_entry *root,
246 char *name, void *data,
247 struct file_operations *fops)
248 {
249 struct proc_dir_entry *proc;
250 umode_t mode = 0;
251
252 if (root == NULL || name == NULL || fops == NULL)
253 return ERR_PTR(-EINVAL);
254
255 if (fops->read)
256 mode = 0444;
257 if (fops->write)
258 mode |= 0200;
259 proc = proc_create_data(name, mode, root, fops, data);
260 if (!proc) {
261 CERROR("LprocFS: No memory to create /proc entry %s", name);
262 return ERR_PTR(-ENOMEM);
263 }
264 return proc;
265 }
266 EXPORT_SYMBOL(lprocfs_add_simple);
267
268 struct proc_dir_entry *lprocfs_add_symlink(const char *name,
269 struct proc_dir_entry *parent, const char *format, ...)
270 {
271 struct proc_dir_entry *entry;
272 char *dest;
273 va_list ap;
274
275 if (parent == NULL || format == NULL)
276 return NULL;
277
278 OBD_ALLOC_WAIT(dest, MAX_STRING_SIZE + 1);
279 if (dest == NULL)
280 return NULL;
281
282 va_start(ap, format);
283 vsnprintf(dest, MAX_STRING_SIZE, format, ap);
284 va_end(ap);
285
286 entry = proc_symlink(name, parent, dest);
287 if (entry == NULL)
288 CERROR("LprocFS: Could not create symbolic link from %s to %s",
289 name, dest);
290
291 OBD_FREE(dest, MAX_STRING_SIZE + 1);
292 return entry;
293 }
294 EXPORT_SYMBOL(lprocfs_add_symlink);
295
296 static struct file_operations lprocfs_generic_fops = { };
297
298 /**
299 * Add /proc entries.
300 *
301 * \param root [in] The parent proc entry on which new entry will be added.
302 * \param list [in] Array of proc entries to be added.
303 * \param data [in] The argument to be passed when entries read/write routines
304 * are called through /proc file.
305 *
306 * \retval 0 on success
307 * < 0 on error
308 */
309 int lprocfs_add_vars(struct proc_dir_entry *root, struct lprocfs_vars *list,
310 void *data)
311 {
312 if (root == NULL || list == NULL)
313 return -EINVAL;
314
315 while (list->name != NULL) {
316 struct proc_dir_entry *proc;
317 umode_t mode = 0;
318
319 if (list->proc_mode != 0000) {
320 mode = list->proc_mode;
321 } else if (list->fops) {
322 if (list->fops->read)
323 mode = 0444;
324 if (list->fops->write)
325 mode |= 0200;
326 }
327 proc = proc_create_data(list->name, mode, root,
328 list->fops ?: &lprocfs_generic_fops,
329 list->data ?: data);
330 if (proc == NULL)
331 return -ENOMEM;
332 list++;
333 }
334 return 0;
335 }
336 EXPORT_SYMBOL(lprocfs_add_vars);
337
338 void lprocfs_remove(struct proc_dir_entry **rooth)
339 {
340 proc_remove(*rooth);
341 *rooth = NULL;
342 }
343 EXPORT_SYMBOL(lprocfs_remove);
344
345 void lprocfs_remove_proc_entry(const char *name, struct proc_dir_entry *parent)
346 {
347 LASSERT(parent != NULL);
348 remove_proc_entry(name, parent);
349 }
350 EXPORT_SYMBOL(lprocfs_remove_proc_entry);
351
352 struct proc_dir_entry *lprocfs_register(const char *name,
353 struct proc_dir_entry *parent,
354 struct lprocfs_vars *list, void *data)
355 {
356 struct proc_dir_entry *entry;
357
358 entry = proc_mkdir(name, parent);
359 if (entry == NULL)
360 GOTO(out, entry = ERR_PTR(-ENOMEM));
361
362 if (list != NULL) {
363 int rc = lprocfs_add_vars(entry, list, data);
364 if (rc != 0) {
365 lprocfs_remove(&entry);
366 entry = ERR_PTR(rc);
367 }
368 }
369 out:
370 return entry;
371 }
372 EXPORT_SYMBOL(lprocfs_register);
373
374 /* Generic callbacks */
375 int lprocfs_rd_uint(struct seq_file *m, void *data)
376 {
377 return seq_printf(m, "%u\n", *(unsigned int *)data);
378 }
379 EXPORT_SYMBOL(lprocfs_rd_uint);
380
381 int lprocfs_wr_uint(struct file *file, const char __user *buffer,
382 unsigned long count, void *data)
383 {
384 unsigned *p = data;
385 char dummy[MAX_STRING_SIZE + 1], *end;
386 unsigned long tmp;
387
388 dummy[MAX_STRING_SIZE] = '\0';
389 if (copy_from_user(dummy, buffer, MAX_STRING_SIZE))
390 return -EFAULT;
391
392 tmp = simple_strtoul(dummy, &end, 0);
393 if (dummy == end)
394 return -EINVAL;
395
396 *p = (unsigned int)tmp;
397 return count;
398 }
399 EXPORT_SYMBOL(lprocfs_wr_uint);
400
401 int lprocfs_rd_u64(struct seq_file *m, void *data)
402 {
403 return seq_printf(m, LPU64"\n", *(__u64 *)data);
404 }
405 EXPORT_SYMBOL(lprocfs_rd_u64);
406
407 int lprocfs_rd_atomic(struct seq_file *m, void *data)
408 {
409 atomic_t *atom = data;
410 LASSERT(atom != NULL);
411 return seq_printf(m, "%d\n", atomic_read(atom));
412 }
413 EXPORT_SYMBOL(lprocfs_rd_atomic);
414
415 int lprocfs_wr_atomic(struct file *file, const char __user *buffer,
416 unsigned long count, void *data)
417 {
418 atomic_t *atm = data;
419 int val = 0;
420 int rc;
421
422 rc = lprocfs_write_helper(buffer, count, &val);
423 if (rc < 0)
424 return rc;
425
426 if (val <= 0)
427 return -ERANGE;
428
429 atomic_set(atm, val);
430 return count;
431 }
432 EXPORT_SYMBOL(lprocfs_wr_atomic);
433
434 int lprocfs_rd_uuid(struct seq_file *m, void *data)
435 {
436 struct obd_device *obd = data;
437
438 LASSERT(obd != NULL);
439 return seq_printf(m, "%s\n", obd->obd_uuid.uuid);
440 }
441 EXPORT_SYMBOL(lprocfs_rd_uuid);
442
443 int lprocfs_rd_name(struct seq_file *m, void *data)
444 {
445 struct obd_device *dev = data;
446
447 LASSERT(dev != NULL);
448 return seq_printf(m, "%s\n", dev->obd_name);
449 }
450 EXPORT_SYMBOL(lprocfs_rd_name);
451
452 int lprocfs_rd_blksize(struct seq_file *m, void *data)
453 {
454 struct obd_device *obd = data;
455 struct obd_statfs osfs;
456 int rc = obd_statfs(NULL, obd->obd_self_export, &osfs,
457 cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS),
458 OBD_STATFS_NODELAY);
459 if (!rc)
460 rc = seq_printf(m, "%u\n", osfs.os_bsize);
461 return rc;
462 }
463 EXPORT_SYMBOL(lprocfs_rd_blksize);
464
465 int lprocfs_rd_kbytestotal(struct seq_file *m, void *data)
466 {
467 struct obd_device *obd = data;
468 struct obd_statfs osfs;
469 int rc = obd_statfs(NULL, obd->obd_self_export, &osfs,
470 cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS),
471 OBD_STATFS_NODELAY);
472 if (!rc) {
473 __u32 blk_size = osfs.os_bsize >> 10;
474 __u64 result = osfs.os_blocks;
475
476 while (blk_size >>= 1)
477 result <<= 1;
478
479 rc = seq_printf(m, LPU64"\n", result);
480 }
481 return rc;
482 }
483 EXPORT_SYMBOL(lprocfs_rd_kbytestotal);
484
485 int lprocfs_rd_kbytesfree(struct seq_file *m, void *data)
486 {
487 struct obd_device *obd = data;
488 struct obd_statfs osfs;
489 int rc = obd_statfs(NULL, obd->obd_self_export, &osfs,
490 cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS),
491 OBD_STATFS_NODELAY);
492 if (!rc) {
493 __u32 blk_size = osfs.os_bsize >> 10;
494 __u64 result = osfs.os_bfree;
495
496 while (blk_size >>= 1)
497 result <<= 1;
498
499 rc = seq_printf(m, LPU64"\n", result);
500 }
501 return rc;
502 }
503 EXPORT_SYMBOL(lprocfs_rd_kbytesfree);
504
505 int lprocfs_rd_kbytesavail(struct seq_file *m, void *data)
506 {
507 struct obd_device *obd = data;
508 struct obd_statfs osfs;
509 int rc = obd_statfs(NULL, obd->obd_self_export, &osfs,
510 cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS),
511 OBD_STATFS_NODELAY);
512 if (!rc) {
513 __u32 blk_size = osfs.os_bsize >> 10;
514 __u64 result = osfs.os_bavail;
515
516 while (blk_size >>= 1)
517 result <<= 1;
518
519 rc = seq_printf(m, LPU64"\n", result);
520 }
521 return rc;
522 }
523 EXPORT_SYMBOL(lprocfs_rd_kbytesavail);
524
525 int lprocfs_rd_filestotal(struct seq_file *m, void *data)
526 {
527 struct obd_device *obd = data;
528 struct obd_statfs osfs;
529 int rc = obd_statfs(NULL, obd->obd_self_export, &osfs,
530 cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS),
531 OBD_STATFS_NODELAY);
532 if (!rc)
533 rc = seq_printf(m, LPU64"\n", osfs.os_files);
534
535 return rc;
536 }
537 EXPORT_SYMBOL(lprocfs_rd_filestotal);
538
539 int lprocfs_rd_filesfree(struct seq_file *m, void *data)
540 {
541 struct obd_device *obd = data;
542 struct obd_statfs osfs;
543 int rc = obd_statfs(NULL, obd->obd_self_export, &osfs,
544 cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS),
545 OBD_STATFS_NODELAY);
546 if (!rc)
547 rc = seq_printf(m, LPU64"\n", osfs.os_ffree);
548 return rc;
549 }
550 EXPORT_SYMBOL(lprocfs_rd_filesfree);
551
552 int lprocfs_rd_server_uuid(struct seq_file *m, void *data)
553 {
554 struct obd_device *obd = data;
555 struct obd_import *imp;
556 char *imp_state_name = NULL;
557 int rc = 0;
558
559 LASSERT(obd != NULL);
560 LPROCFS_CLIMP_CHECK(obd);
561 imp = obd->u.cli.cl_import;
562 imp_state_name = ptlrpc_import_state_name(imp->imp_state);
563 rc = seq_printf(m, "%s\t%s%s\n", obd2cli_tgt(obd), imp_state_name,
564 imp->imp_deactive ? "\tDEACTIVATED" : "");
565
566 LPROCFS_CLIMP_EXIT(obd);
567 return rc;
568 }
569 EXPORT_SYMBOL(lprocfs_rd_server_uuid);
570
571 int lprocfs_rd_conn_uuid(struct seq_file *m, void *data)
572 {
573 struct obd_device *obd = data;
574 struct ptlrpc_connection *conn;
575 int rc = 0;
576
577 LASSERT(obd != NULL);
578
579 LPROCFS_CLIMP_CHECK(obd);
580 conn = obd->u.cli.cl_import->imp_connection;
581 if (conn && obd->u.cli.cl_import)
582 rc = seq_printf(m, "%s\n", conn->c_remote_uuid.uuid);
583 else
584 rc = seq_printf(m, "%s\n", "<none>");
585
586 LPROCFS_CLIMP_EXIT(obd);
587 return rc;
588 }
589 EXPORT_SYMBOL(lprocfs_rd_conn_uuid);
590
591 /** add up per-cpu counters */
592 void lprocfs_stats_collect(struct lprocfs_stats *stats, int idx,
593 struct lprocfs_counter *cnt)
594 {
595 unsigned int num_entry;
596 struct lprocfs_counter *percpu_cntr;
597 int i;
598 unsigned long flags = 0;
599
600 memset(cnt, 0, sizeof(*cnt));
601
602 if (stats == NULL) {
603 /* set count to 1 to avoid divide-by-zero errs in callers */
604 cnt->lc_count = 1;
605 return;
606 }
607
608 cnt->lc_min = LC_MIN_INIT;
609
610 num_entry = lprocfs_stats_lock(stats, LPROCFS_GET_NUM_CPU, &flags);
611
612 for (i = 0; i < num_entry; i++) {
613 if (stats->ls_percpu[i] == NULL)
614 continue;
615 percpu_cntr = lprocfs_stats_counter_get(stats, i, idx);
616
617 cnt->lc_count += percpu_cntr->lc_count;
618 cnt->lc_sum += percpu_cntr->lc_sum;
619 if (percpu_cntr->lc_min < cnt->lc_min)
620 cnt->lc_min = percpu_cntr->lc_min;
621 if (percpu_cntr->lc_max > cnt->lc_max)
622 cnt->lc_max = percpu_cntr->lc_max;
623 cnt->lc_sumsquare += percpu_cntr->lc_sumsquare;
624 }
625
626 lprocfs_stats_unlock(stats, LPROCFS_GET_NUM_CPU, &flags);
627 }
628 EXPORT_SYMBOL(lprocfs_stats_collect);
629
630 /**
631 * Append a space separated list of current set flags to str.
632 */
633 #define flag2str(flag, first) \
634 do { \
635 if (imp->imp_##flag) \
636 seq_printf(m, "%s" #flag, first ? "" : ", "); \
637 } while (0)
638 static int obd_import_flags2str(struct obd_import *imp, struct seq_file *m)
639 {
640 bool first = true;
641
642 if (imp->imp_obd->obd_no_recov) {
643 seq_printf(m, "no_recov");
644 first = false;
645 }
646
647 flag2str(invalid, first);
648 first = false;
649 flag2str(deactive, first);
650 flag2str(replayable, first);
651 flag2str(pingable, first);
652 return 0;
653 }
654 #undef flags2str
655
656 static void obd_connect_seq_flags2str(struct seq_file *m, __u64 flags, char *sep)
657 {
658 __u64 mask = 1;
659 int i;
660 bool first = true;
661
662 for (i = 0; obd_connect_names[i] != NULL; i++, mask <<= 1) {
663 if (flags & mask) {
664 seq_printf(m, "%s%s",
665 first ? sep : "", obd_connect_names[i]);
666 first = false;
667 }
668 }
669 if (flags & ~(mask - 1))
670 seq_printf(m, "%sunknown flags "LPX64,
671 first ? sep : "", flags & ~(mask - 1));
672 }
673
674 int lprocfs_rd_import(struct seq_file *m, void *data)
675 {
676 struct lprocfs_counter ret;
677 struct lprocfs_counter_header *header;
678 struct obd_device *obd = (struct obd_device *)data;
679 struct obd_import *imp;
680 struct obd_import_conn *conn;
681 int j;
682 int k;
683 int rw = 0;
684
685 LASSERT(obd != NULL);
686 LPROCFS_CLIMP_CHECK(obd);
687 imp = obd->u.cli.cl_import;
688
689 seq_printf(m,
690 "import:\n"
691 " name: %s\n"
692 " target: %s\n"
693 " state: %s\n"
694 " instance: %u\n"
695 " connect_flags: [",
696 obd->obd_name,
697 obd2cli_tgt(obd),
698 ptlrpc_import_state_name(imp->imp_state),
699 imp->imp_connect_data.ocd_instance);
700 obd_connect_seq_flags2str(m, imp->imp_connect_data.ocd_connect_flags, ", ");
701 seq_printf(m,
702 "]\n"
703 " import_flags: [");
704 obd_import_flags2str(imp, m);
705
706 seq_printf(m,
707 "]\n"
708 " connection:\n"
709 " failover_nids: [");
710 spin_lock(&imp->imp_lock);
711 j = 0;
712 list_for_each_entry(conn, &imp->imp_conn_list, oic_item) {
713 seq_printf(m, "%s%s", j ? ", " : "",
714 libcfs_nid2str(conn->oic_conn->c_peer.nid));
715 j++;
716 }
717 seq_printf(m,
718 "]\n"
719 " current_connection: %s\n"
720 " connection_attempts: %u\n"
721 " generation: %u\n"
722 " in-progress_invalidations: %u\n",
723 imp->imp_connection == NULL ? "<none>" :
724 libcfs_nid2str(imp->imp_connection->c_peer.nid),
725 imp->imp_conn_cnt,
726 imp->imp_generation,
727 atomic_read(&imp->imp_inval_count));
728 spin_unlock(&imp->imp_lock);
729
730 if (obd->obd_svc_stats == NULL)
731 goto out_climp;
732
733 header = &obd->obd_svc_stats->ls_cnt_header[PTLRPC_REQWAIT_CNTR];
734 lprocfs_stats_collect(obd->obd_svc_stats, PTLRPC_REQWAIT_CNTR, &ret);
735 if (ret.lc_count != 0) {
736 /* first argument to do_div MUST be __u64 */
737 __u64 sum = ret.lc_sum;
738 do_div(sum, ret.lc_count);
739 ret.lc_sum = sum;
740 } else
741 ret.lc_sum = 0;
742 seq_printf(m,
743 " rpcs:\n"
744 " inflight: %u\n"
745 " unregistering: %u\n"
746 " timeouts: %u\n"
747 " avg_waittime: "LPU64" %s\n",
748 atomic_read(&imp->imp_inflight),
749 atomic_read(&imp->imp_unregistering),
750 atomic_read(&imp->imp_timeouts),
751 ret.lc_sum, header->lc_units);
752
753 k = 0;
754 for(j = 0; j < IMP_AT_MAX_PORTALS; j++) {
755 if (imp->imp_at.iat_portal[j] == 0)
756 break;
757 k = max_t(unsigned int, k,
758 at_get(&imp->imp_at.iat_service_estimate[j]));
759 }
760 seq_printf(m,
761 " service_estimates:\n"
762 " services: %u sec\n"
763 " network: %u sec\n",
764 k,
765 at_get(&imp->imp_at.iat_net_latency));
766
767 seq_printf(m,
768 " transactions:\n"
769 " last_replay: "LPU64"\n"
770 " peer_committed: "LPU64"\n"
771 " last_checked: "LPU64"\n",
772 imp->imp_last_replay_transno,
773 imp->imp_peer_committed_transno,
774 imp->imp_last_transno_checked);
775
776 /* avg data rates */
777 for (rw = 0; rw <= 1; rw++) {
778 lprocfs_stats_collect(obd->obd_svc_stats,
779 PTLRPC_LAST_CNTR + BRW_READ_BYTES + rw,
780 &ret);
781 if (ret.lc_sum > 0 && ret.lc_count > 0) {
782 /* first argument to do_div MUST be __u64 */
783 __u64 sum = ret.lc_sum;
784 do_div(sum, ret.lc_count);
785 ret.lc_sum = sum;
786 seq_printf(m,
787 " %s_data_averages:\n"
788 " bytes_per_rpc: "LPU64"\n",
789 rw ? "write" : "read",
790 ret.lc_sum);
791 }
792 k = (int)ret.lc_sum;
793 j = opcode_offset(OST_READ + rw) + EXTRA_MAX_OPCODES;
794 header = &obd->obd_svc_stats->ls_cnt_header[j];
795 lprocfs_stats_collect(obd->obd_svc_stats, j, &ret);
796 if (ret.lc_sum > 0 && ret.lc_count != 0) {
797 /* first argument to do_div MUST be __u64 */
798 __u64 sum = ret.lc_sum;
799 do_div(sum, ret.lc_count);
800 ret.lc_sum = sum;
801 seq_printf(m,
802 " %s_per_rpc: "LPU64"\n",
803 header->lc_units, ret.lc_sum);
804 j = (int)ret.lc_sum;
805 if (j > 0)
806 seq_printf(m,
807 " MB_per_sec: %u.%.02u\n",
808 k / j, (100 * k / j) % 100);
809 }
810 }
811
812 out_climp:
813 LPROCFS_CLIMP_EXIT(obd);
814 return 0;
815 }
816 EXPORT_SYMBOL(lprocfs_rd_import);
817
818 int lprocfs_rd_state(struct seq_file *m, void *data)
819 {
820 struct obd_device *obd = (struct obd_device *)data;
821 struct obd_import *imp;
822 int j, k;
823
824 LASSERT(obd != NULL);
825 LPROCFS_CLIMP_CHECK(obd);
826 imp = obd->u.cli.cl_import;
827
828 seq_printf(m, "current_state: %s\n",
829 ptlrpc_import_state_name(imp->imp_state));
830 seq_printf(m, "state_history:\n");
831 k = imp->imp_state_hist_idx;
832 for (j = 0; j < IMP_STATE_HIST_LEN; j++) {
833 struct import_state_hist *ish =
834 &imp->imp_state_hist[(k + j) % IMP_STATE_HIST_LEN];
835 if (ish->ish_state == 0)
836 continue;
837 seq_printf(m, " - ["CFS_TIME_T", %s]\n",
838 ish->ish_time,
839 ptlrpc_import_state_name(ish->ish_state));
840 }
841
842 LPROCFS_CLIMP_EXIT(obd);
843 return 0;
844 }
845 EXPORT_SYMBOL(lprocfs_rd_state);
846
847 int lprocfs_at_hist_helper(struct seq_file *m, struct adaptive_timeout *at)
848 {
849 int i;
850 for (i = 0; i < AT_BINS; i++)
851 seq_printf(m, "%3u ", at->at_hist[i]);
852 seq_printf(m, "\n");
853 return 0;
854 }
855 EXPORT_SYMBOL(lprocfs_at_hist_helper);
856
857 /* See also ptlrpc_lprocfs_rd_timeouts */
858 int lprocfs_rd_timeouts(struct seq_file *m, void *data)
859 {
860 struct obd_device *obd = (struct obd_device *)data;
861 struct obd_import *imp;
862 unsigned int cur, worst;
863 time_t now, worstt;
864 struct dhms ts;
865 int i;
866
867 LASSERT(obd != NULL);
868 LPROCFS_CLIMP_CHECK(obd);
869 imp = obd->u.cli.cl_import;
870
871 now = cfs_time_current_sec();
872
873 /* Some network health info for kicks */
874 s2dhms(&ts, now - imp->imp_last_reply_time);
875 seq_printf(m, "%-10s : %ld, "DHMS_FMT" ago\n",
876 "last reply", imp->imp_last_reply_time, DHMS_VARS(&ts));
877
878 cur = at_get(&imp->imp_at.iat_net_latency);
879 worst = imp->imp_at.iat_net_latency.at_worst_ever;
880 worstt = imp->imp_at.iat_net_latency.at_worst_time;
881 s2dhms(&ts, now - worstt);
882 seq_printf(m, "%-10s : cur %3u worst %3u (at %ld, "DHMS_FMT" ago) ",
883 "network", cur, worst, worstt, DHMS_VARS(&ts));
884 lprocfs_at_hist_helper(m, &imp->imp_at.iat_net_latency);
885
886 for(i = 0; i < IMP_AT_MAX_PORTALS; i++) {
887 if (imp->imp_at.iat_portal[i] == 0)
888 break;
889 cur = at_get(&imp->imp_at.iat_service_estimate[i]);
890 worst = imp->imp_at.iat_service_estimate[i].at_worst_ever;
891 worstt = imp->imp_at.iat_service_estimate[i].at_worst_time;
892 s2dhms(&ts, now - worstt);
893 seq_printf(m, "portal %-2d : cur %3u worst %3u (at %ld, "
894 DHMS_FMT" ago) ", imp->imp_at.iat_portal[i],
895 cur, worst, worstt, DHMS_VARS(&ts));
896 lprocfs_at_hist_helper(m, &imp->imp_at.iat_service_estimate[i]);
897 }
898
899 LPROCFS_CLIMP_EXIT(obd);
900 return 0;
901 }
902 EXPORT_SYMBOL(lprocfs_rd_timeouts);
903
904 int lprocfs_rd_connect_flags(struct seq_file *m, void *data)
905 {
906 struct obd_device *obd = data;
907 __u64 flags;
908
909 LPROCFS_CLIMP_CHECK(obd);
910 flags = obd->u.cli.cl_import->imp_connect_data.ocd_connect_flags;
911 seq_printf(m, "flags="LPX64"\n", flags);
912 obd_connect_seq_flags2str(m, flags, "\n");
913 seq_printf(m, "\n");
914 LPROCFS_CLIMP_EXIT(obd);
915 return 0;
916 }
917 EXPORT_SYMBOL(lprocfs_rd_connect_flags);
918
919 int lprocfs_rd_num_exports(struct seq_file *m, void *data)
920 {
921 struct obd_device *obd = data;
922
923 LASSERT(obd != NULL);
924 return seq_printf(m, "%u\n", obd->obd_num_exports);
925 }
926 EXPORT_SYMBOL(lprocfs_rd_num_exports);
927
928 int lprocfs_rd_numrefs(struct seq_file *m, void *data)
929 {
930 struct obd_type *class = (struct obd_type*) data;
931
932 LASSERT(class != NULL);
933 return seq_printf(m, "%d\n", class->typ_refcnt);
934 }
935 EXPORT_SYMBOL(lprocfs_rd_numrefs);
936
937 int lprocfs_obd_setup(struct obd_device *obd, struct lprocfs_vars *list)
938 {
939 int rc = 0;
940
941 LASSERT(obd != NULL);
942 LASSERT(obd->obd_magic == OBD_DEVICE_MAGIC);
943 LASSERT(obd->obd_type->typ_procroot != NULL);
944
945 obd->obd_proc_entry = lprocfs_register(obd->obd_name,
946 obd->obd_type->typ_procroot,
947 list, obd);
948 if (IS_ERR(obd->obd_proc_entry)) {
949 rc = PTR_ERR(obd->obd_proc_entry);
950 CERROR("error %d setting up lprocfs for %s\n",rc,obd->obd_name);
951 obd->obd_proc_entry = NULL;
952 }
953 return rc;
954 }
955 EXPORT_SYMBOL(lprocfs_obd_setup);
956
957 int lprocfs_obd_cleanup(struct obd_device *obd)
958 {
959 if (!obd)
960 return -EINVAL;
961 if (obd->obd_proc_exports_entry) {
962 /* Should be no exports left */
963 lprocfs_remove(&obd->obd_proc_exports_entry);
964 obd->obd_proc_exports_entry = NULL;
965 }
966 if (obd->obd_proc_entry) {
967 lprocfs_remove(&obd->obd_proc_entry);
968 obd->obd_proc_entry = NULL;
969 }
970 return 0;
971 }
972 EXPORT_SYMBOL(lprocfs_obd_cleanup);
973
974 static void lprocfs_free_client_stats(struct nid_stat *client_stat)
975 {
976 CDEBUG(D_CONFIG, "stat %p - data %p/%p\n", client_stat,
977 client_stat->nid_proc, client_stat->nid_stats);
978
979 LASSERTF(atomic_read(&client_stat->nid_exp_ref_count) == 0,
980 "nid %s:count %d\n", libcfs_nid2str(client_stat->nid),
981 atomic_read(&client_stat->nid_exp_ref_count));
982
983 if (client_stat->nid_proc)
984 lprocfs_remove(&client_stat->nid_proc);
985
986 if (client_stat->nid_stats)
987 lprocfs_free_stats(&client_stat->nid_stats);
988
989 if (client_stat->nid_ldlm_stats)
990 lprocfs_free_stats(&client_stat->nid_ldlm_stats);
991
992 OBD_FREE_PTR(client_stat);
993 return;
994
995 }
996
997 void lprocfs_free_per_client_stats(struct obd_device *obd)
998 {
999 struct cfs_hash *hash = obd->obd_nid_stats_hash;
1000 struct nid_stat *stat;
1001
1002 /* we need extra list - because hash_exit called to early */
1003 /* not need locking because all clients is died */
1004 while (!list_empty(&obd->obd_nid_stats)) {
1005 stat = list_entry(obd->obd_nid_stats.next,
1006 struct nid_stat, nid_list);
1007 list_del_init(&stat->nid_list);
1008 cfs_hash_del(hash, &stat->nid, &stat->nid_hash);
1009 lprocfs_free_client_stats(stat);
1010 }
1011 }
1012 EXPORT_SYMBOL(lprocfs_free_per_client_stats);
1013
1014 struct lprocfs_stats *lprocfs_alloc_stats(unsigned int num,
1015 enum lprocfs_stats_flags flags)
1016 {
1017 struct lprocfs_stats *stats;
1018 unsigned int num_entry;
1019 unsigned int percpusize = 0;
1020 int i;
1021
1022 if (num == 0)
1023 return NULL;
1024
1025 if (lprocfs_no_percpu_stats != 0)
1026 flags |= LPROCFS_STATS_FLAG_NOPERCPU;
1027
1028 if (flags & LPROCFS_STATS_FLAG_NOPERCPU)
1029 num_entry = 1;
1030 else
1031 num_entry = num_possible_cpus();
1032
1033 /* alloc percpu pointers for all possible cpu slots */
1034 LIBCFS_ALLOC(stats, offsetof(typeof(*stats), ls_percpu[num_entry]));
1035 if (stats == NULL)
1036 return NULL;
1037
1038 stats->ls_num = num;
1039 stats->ls_flags = flags;
1040 spin_lock_init(&stats->ls_lock);
1041
1042 /* alloc num of counter headers */
1043 LIBCFS_ALLOC(stats->ls_cnt_header,
1044 stats->ls_num * sizeof(struct lprocfs_counter_header));
1045 if (stats->ls_cnt_header == NULL)
1046 goto fail;
1047
1048 if ((flags & LPROCFS_STATS_FLAG_NOPERCPU) != 0) {
1049 /* contains only one set counters */
1050 percpusize = lprocfs_stats_counter_size(stats);
1051 LIBCFS_ALLOC_ATOMIC(stats->ls_percpu[0], percpusize);
1052 if (stats->ls_percpu[0] == NULL)
1053 goto fail;
1054 stats->ls_biggest_alloc_num = 1;
1055 } else if ((flags & LPROCFS_STATS_FLAG_IRQ_SAFE) != 0) {
1056 /* alloc all percpu data, currently only obd_memory use this */
1057 for (i = 0; i < num_entry; ++i)
1058 if (lprocfs_stats_alloc_one(stats, i) < 0)
1059 goto fail;
1060 }
1061
1062 return stats;
1063
1064 fail:
1065 lprocfs_free_stats(&stats);
1066 return NULL;
1067 }
1068 EXPORT_SYMBOL(lprocfs_alloc_stats);
1069
1070 void lprocfs_free_stats(struct lprocfs_stats **statsh)
1071 {
1072 struct lprocfs_stats *stats = *statsh;
1073 unsigned int num_entry;
1074 unsigned int percpusize;
1075 unsigned int i;
1076
1077 if (stats == NULL || stats->ls_num == 0)
1078 return;
1079 *statsh = NULL;
1080
1081 if (stats->ls_flags & LPROCFS_STATS_FLAG_NOPERCPU)
1082 num_entry = 1;
1083 else
1084 num_entry = num_possible_cpus();
1085
1086 percpusize = lprocfs_stats_counter_size(stats);
1087 for (i = 0; i < num_entry; i++)
1088 if (stats->ls_percpu[i] != NULL)
1089 LIBCFS_FREE(stats->ls_percpu[i], percpusize);
1090 if (stats->ls_cnt_header != NULL)
1091 LIBCFS_FREE(stats->ls_cnt_header, stats->ls_num *
1092 sizeof(struct lprocfs_counter_header));
1093 LIBCFS_FREE(stats, offsetof(typeof(*stats), ls_percpu[num_entry]));
1094 }
1095 EXPORT_SYMBOL(lprocfs_free_stats);
1096
1097 void lprocfs_clear_stats(struct lprocfs_stats *stats)
1098 {
1099 struct lprocfs_counter *percpu_cntr;
1100 int i;
1101 int j;
1102 unsigned int num_entry;
1103 unsigned long flags = 0;
1104
1105 num_entry = lprocfs_stats_lock(stats, LPROCFS_GET_NUM_CPU, &flags);
1106
1107 for (i = 0; i < num_entry; i++) {
1108 if (stats->ls_percpu[i] == NULL)
1109 continue;
1110 for (j = 0; j < stats->ls_num; j++) {
1111 percpu_cntr = lprocfs_stats_counter_get(stats, i, j);
1112 percpu_cntr->lc_count = 0;
1113 percpu_cntr->lc_min = LC_MIN_INIT;
1114 percpu_cntr->lc_max = 0;
1115 percpu_cntr->lc_sumsquare = 0;
1116 percpu_cntr->lc_sum = 0;
1117 if (stats->ls_flags & LPROCFS_STATS_FLAG_IRQ_SAFE)
1118 percpu_cntr->lc_sum_irq = 0;
1119 }
1120 }
1121
1122 lprocfs_stats_unlock(stats, LPROCFS_GET_NUM_CPU, &flags);
1123 }
1124 EXPORT_SYMBOL(lprocfs_clear_stats);
1125
1126 static ssize_t lprocfs_stats_seq_write(struct file *file,
1127 const char __user *buf,
1128 size_t len, loff_t *off)
1129 {
1130 struct seq_file *seq = file->private_data;
1131 struct lprocfs_stats *stats = seq->private;
1132
1133 lprocfs_clear_stats(stats);
1134
1135 return len;
1136 }
1137
1138 static void *lprocfs_stats_seq_start(struct seq_file *p, loff_t *pos)
1139 {
1140 struct lprocfs_stats *stats = p->private;
1141
1142 return (*pos < stats->ls_num) ? pos : NULL;
1143 }
1144
1145 static void lprocfs_stats_seq_stop(struct seq_file *p, void *v)
1146 {
1147 }
1148
1149 static void *lprocfs_stats_seq_next(struct seq_file *p, void *v, loff_t *pos)
1150 {
1151 (*pos)++;
1152 return lprocfs_stats_seq_start(p, pos);
1153 }
1154
1155 /* seq file export of one lprocfs counter */
1156 static int lprocfs_stats_seq_show(struct seq_file *p, void *v)
1157 {
1158 struct lprocfs_stats *stats = p->private;
1159 struct lprocfs_counter_header *hdr;
1160 struct lprocfs_counter ctr;
1161 int idx = *(loff_t *)v;
1162 int rc = 0;
1163
1164 if (idx == 0) {
1165 struct timeval now;
1166 do_gettimeofday(&now);
1167 rc = seq_printf(p, "%-25s %lu.%lu secs.usecs\n",
1168 "snapshot_time", now.tv_sec, (unsigned long)now.tv_usec);
1169 if (rc < 0)
1170 return rc;
1171 }
1172 hdr = &stats->ls_cnt_header[idx];
1173 lprocfs_stats_collect(stats, idx, &ctr);
1174
1175 if (ctr.lc_count == 0)
1176 goto out;
1177
1178 rc = seq_printf(p, "%-25s "LPD64" samples [%s]", hdr->lc_name,
1179 ctr.lc_count, hdr->lc_units);
1180
1181 if (rc < 0)
1182 goto out;
1183
1184 if ((hdr->lc_config & LPROCFS_CNTR_AVGMINMAX) && (ctr.lc_count > 0)) {
1185 rc = seq_printf(p, " "LPD64" "LPD64" "LPD64,
1186 ctr.lc_min, ctr.lc_max, ctr.lc_sum);
1187 if (rc < 0)
1188 goto out;
1189 if (hdr->lc_config & LPROCFS_CNTR_STDDEV)
1190 rc = seq_printf(p, " "LPD64, ctr.lc_sumsquare);
1191 if (rc < 0)
1192 goto out;
1193 }
1194 rc = seq_printf(p, "\n");
1195 out:
1196 return (rc < 0) ? rc : 0;
1197 }
1198
1199 struct seq_operations lprocfs_stats_seq_sops = {
1200 .start = lprocfs_stats_seq_start,
1201 .stop = lprocfs_stats_seq_stop,
1202 .next = lprocfs_stats_seq_next,
1203 .show = lprocfs_stats_seq_show,
1204 };
1205
1206 static int lprocfs_stats_seq_open(struct inode *inode, struct file *file)
1207 {
1208 struct seq_file *seq;
1209 int rc;
1210
1211 rc = seq_open(file, &lprocfs_stats_seq_sops);
1212 if (rc)
1213 return rc;
1214 seq = file->private_data;
1215 seq->private = PDE_DATA(inode);
1216 return 0;
1217 }
1218
1219 struct file_operations lprocfs_stats_seq_fops = {
1220 .owner = THIS_MODULE,
1221 .open = lprocfs_stats_seq_open,
1222 .read = seq_read,
1223 .write = lprocfs_stats_seq_write,
1224 .llseek = seq_lseek,
1225 .release = lprocfs_seq_release,
1226 };
1227
1228 int lprocfs_register_stats(struct proc_dir_entry *root, const char *name,
1229 struct lprocfs_stats *stats)
1230 {
1231 struct proc_dir_entry *entry;
1232 LASSERT(root != NULL);
1233
1234 entry = proc_create_data(name, 0644, root,
1235 &lprocfs_stats_seq_fops, stats);
1236 if (entry == NULL)
1237 return -ENOMEM;
1238
1239 return 0;
1240 }
1241 EXPORT_SYMBOL(lprocfs_register_stats);
1242
1243 void lprocfs_counter_init(struct lprocfs_stats *stats, int index,
1244 unsigned conf, const char *name, const char *units)
1245 {
1246 struct lprocfs_counter_header *header;
1247 struct lprocfs_counter *percpu_cntr;
1248 unsigned long flags = 0;
1249 unsigned int i;
1250 unsigned int num_cpu;
1251
1252 LASSERT(stats != NULL);
1253
1254 header = &stats->ls_cnt_header[index];
1255 LASSERTF(header != NULL, "Failed to allocate stats header:[%d]%s/%s\n",
1256 index, name, units);
1257
1258 header->lc_config = conf;
1259 header->lc_name = name;
1260 header->lc_units = units;
1261
1262 num_cpu = lprocfs_stats_lock(stats, LPROCFS_GET_NUM_CPU, &flags);
1263 for (i = 0; i < num_cpu; ++i) {
1264 if (stats->ls_percpu[i] == NULL)
1265 continue;
1266 percpu_cntr = lprocfs_stats_counter_get(stats, i, index);
1267 percpu_cntr->lc_count = 0;
1268 percpu_cntr->lc_min = LC_MIN_INIT;
1269 percpu_cntr->lc_max = 0;
1270 percpu_cntr->lc_sumsquare = 0;
1271 percpu_cntr->lc_sum = 0;
1272 if ((stats->ls_flags & LPROCFS_STATS_FLAG_IRQ_SAFE) != 0)
1273 percpu_cntr->lc_sum_irq = 0;
1274 }
1275 lprocfs_stats_unlock(stats, LPROCFS_GET_NUM_CPU, &flags);
1276 }
1277 EXPORT_SYMBOL(lprocfs_counter_init);
1278
1279 #define LPROCFS_OBD_OP_INIT(base, stats, op) \
1280 do { \
1281 unsigned int coffset = base + OBD_COUNTER_OFFSET(op); \
1282 LASSERT(coffset < stats->ls_num); \
1283 lprocfs_counter_init(stats, coffset, 0, #op, "reqs"); \
1284 } while (0)
1285
1286 void lprocfs_init_ops_stats(int num_private_stats, struct lprocfs_stats *stats)
1287 {
1288 LPROCFS_OBD_OP_INIT(num_private_stats, stats, iocontrol);
1289 LPROCFS_OBD_OP_INIT(num_private_stats, stats, get_info);
1290 LPROCFS_OBD_OP_INIT(num_private_stats, stats, set_info_async);
1291 LPROCFS_OBD_OP_INIT(num_private_stats, stats, attach);
1292 LPROCFS_OBD_OP_INIT(num_private_stats, stats, detach);
1293 LPROCFS_OBD_OP_INIT(num_private_stats, stats, setup);
1294 LPROCFS_OBD_OP_INIT(num_private_stats, stats, precleanup);
1295 LPROCFS_OBD_OP_INIT(num_private_stats, stats, cleanup);
1296 LPROCFS_OBD_OP_INIT(num_private_stats, stats, process_config);
1297 LPROCFS_OBD_OP_INIT(num_private_stats, stats, postrecov);
1298 LPROCFS_OBD_OP_INIT(num_private_stats, stats, add_conn);
1299 LPROCFS_OBD_OP_INIT(num_private_stats, stats, del_conn);
1300 LPROCFS_OBD_OP_INIT(num_private_stats, stats, connect);
1301 LPROCFS_OBD_OP_INIT(num_private_stats, stats, reconnect);
1302 LPROCFS_OBD_OP_INIT(num_private_stats, stats, disconnect);
1303 LPROCFS_OBD_OP_INIT(num_private_stats, stats, fid_init);
1304 LPROCFS_OBD_OP_INIT(num_private_stats, stats, fid_fini);
1305 LPROCFS_OBD_OP_INIT(num_private_stats, stats, fid_alloc);
1306 LPROCFS_OBD_OP_INIT(num_private_stats, stats, statfs);
1307 LPROCFS_OBD_OP_INIT(num_private_stats, stats, statfs_async);
1308 LPROCFS_OBD_OP_INIT(num_private_stats, stats, packmd);
1309 LPROCFS_OBD_OP_INIT(num_private_stats, stats, unpackmd);
1310 LPROCFS_OBD_OP_INIT(num_private_stats, stats, preallocate);
1311 LPROCFS_OBD_OP_INIT(num_private_stats, stats, precreate);
1312 LPROCFS_OBD_OP_INIT(num_private_stats, stats, create);
1313 LPROCFS_OBD_OP_INIT(num_private_stats, stats, create_async);
1314 LPROCFS_OBD_OP_INIT(num_private_stats, stats, destroy);
1315 LPROCFS_OBD_OP_INIT(num_private_stats, stats, setattr);
1316 LPROCFS_OBD_OP_INIT(num_private_stats, stats, setattr_async);
1317 LPROCFS_OBD_OP_INIT(num_private_stats, stats, getattr);
1318 LPROCFS_OBD_OP_INIT(num_private_stats, stats, getattr_async);
1319 LPROCFS_OBD_OP_INIT(num_private_stats, stats, brw);
1320 LPROCFS_OBD_OP_INIT(num_private_stats, stats, merge_lvb);
1321 LPROCFS_OBD_OP_INIT(num_private_stats, stats, adjust_kms);
1322 LPROCFS_OBD_OP_INIT(num_private_stats, stats, punch);
1323 LPROCFS_OBD_OP_INIT(num_private_stats, stats, sync);
1324 LPROCFS_OBD_OP_INIT(num_private_stats, stats, migrate);
1325 LPROCFS_OBD_OP_INIT(num_private_stats, stats, copy);
1326 LPROCFS_OBD_OP_INIT(num_private_stats, stats, iterate);
1327 LPROCFS_OBD_OP_INIT(num_private_stats, stats, preprw);
1328 LPROCFS_OBD_OP_INIT(num_private_stats, stats, commitrw);
1329 LPROCFS_OBD_OP_INIT(num_private_stats, stats, enqueue);
1330 LPROCFS_OBD_OP_INIT(num_private_stats, stats, change_cbdata);
1331 LPROCFS_OBD_OP_INIT(num_private_stats, stats, find_cbdata);
1332 LPROCFS_OBD_OP_INIT(num_private_stats, stats, cancel);
1333 LPROCFS_OBD_OP_INIT(num_private_stats, stats, cancel_unused);
1334 LPROCFS_OBD_OP_INIT(num_private_stats, stats, init_export);
1335 LPROCFS_OBD_OP_INIT(num_private_stats, stats, destroy_export);
1336 LPROCFS_OBD_OP_INIT(num_private_stats, stats, extent_calc);
1337 LPROCFS_OBD_OP_INIT(num_private_stats, stats, llog_init);
1338 LPROCFS_OBD_OP_INIT(num_private_stats, stats, llog_connect);
1339 LPROCFS_OBD_OP_INIT(num_private_stats, stats, llog_finish);
1340 LPROCFS_OBD_OP_INIT(num_private_stats, stats, pin);
1341 LPROCFS_OBD_OP_INIT(num_private_stats, stats, unpin);
1342 LPROCFS_OBD_OP_INIT(num_private_stats, stats, import_event);
1343 LPROCFS_OBD_OP_INIT(num_private_stats, stats, notify);
1344 LPROCFS_OBD_OP_INIT(num_private_stats, stats, health_check);
1345 LPROCFS_OBD_OP_INIT(num_private_stats, stats, get_uuid);
1346 LPROCFS_OBD_OP_INIT(num_private_stats, stats, quotacheck);
1347 LPROCFS_OBD_OP_INIT(num_private_stats, stats, quotactl);
1348 LPROCFS_OBD_OP_INIT(num_private_stats, stats, ping);
1349 LPROCFS_OBD_OP_INIT(num_private_stats, stats, pool_new);
1350 LPROCFS_OBD_OP_INIT(num_private_stats, stats, pool_rem);
1351 LPROCFS_OBD_OP_INIT(num_private_stats, stats, pool_add);
1352 LPROCFS_OBD_OP_INIT(num_private_stats, stats, pool_del);
1353 LPROCFS_OBD_OP_INIT(num_private_stats, stats, getref);
1354 LPROCFS_OBD_OP_INIT(num_private_stats, stats, putref);
1355 }
1356 EXPORT_SYMBOL(lprocfs_init_ops_stats);
1357
1358 int lprocfs_alloc_obd_stats(struct obd_device *obd, unsigned num_private_stats)
1359 {
1360 struct lprocfs_stats *stats;
1361 unsigned int num_stats;
1362 int rc, i;
1363
1364 LASSERT(obd->obd_stats == NULL);
1365 LASSERT(obd->obd_proc_entry != NULL);
1366 LASSERT(obd->obd_cntr_base == 0);
1367
1368 num_stats = ((int)sizeof(*obd->obd_type->typ_dt_ops) / sizeof(void *)) +
1369 num_private_stats - 1 /* o_owner */;
1370 stats = lprocfs_alloc_stats(num_stats, 0);
1371 if (stats == NULL)
1372 return -ENOMEM;
1373
1374 lprocfs_init_ops_stats(num_private_stats, stats);
1375
1376 for (i = num_private_stats; i < num_stats; i++) {
1377 /* If this LBUGs, it is likely that an obd
1378 * operation was added to struct obd_ops in
1379 * <obd.h>, and that the corresponding line item
1380 * LPROCFS_OBD_OP_INIT(.., .., opname)
1381 * is missing from the list above. */
1382 LASSERTF(stats->ls_cnt_header[i].lc_name != NULL,
1383 "Missing obd_stat initializer obd_op "
1384 "operation at offset %d.\n", i - num_private_stats);
1385 }
1386 rc = lprocfs_register_stats(obd->obd_proc_entry, "stats", stats);
1387 if (rc < 0) {
1388 lprocfs_free_stats(&stats);
1389 } else {
1390 obd->obd_stats = stats;
1391 obd->obd_cntr_base = num_private_stats;
1392 }
1393 return rc;
1394 }
1395 EXPORT_SYMBOL(lprocfs_alloc_obd_stats);
1396
1397 void lprocfs_free_obd_stats(struct obd_device *obd)
1398 {
1399 if (obd->obd_stats)
1400 lprocfs_free_stats(&obd->obd_stats);
1401 }
1402 EXPORT_SYMBOL(lprocfs_free_obd_stats);
1403
1404 #define LPROCFS_MD_OP_INIT(base, stats, op) \
1405 do { \
1406 unsigned int coffset = base + MD_COUNTER_OFFSET(op); \
1407 LASSERT(coffset < stats->ls_num); \
1408 lprocfs_counter_init(stats, coffset, 0, #op, "reqs"); \
1409 } while (0)
1410
1411 void lprocfs_init_mps_stats(int num_private_stats, struct lprocfs_stats *stats)
1412 {
1413 LPROCFS_MD_OP_INIT(num_private_stats, stats, getstatus);
1414 LPROCFS_MD_OP_INIT(num_private_stats, stats, null_inode);
1415 LPROCFS_MD_OP_INIT(num_private_stats, stats, find_cbdata);
1416 LPROCFS_MD_OP_INIT(num_private_stats, stats, close);
1417 LPROCFS_MD_OP_INIT(num_private_stats, stats, create);
1418 LPROCFS_MD_OP_INIT(num_private_stats, stats, done_writing);
1419 LPROCFS_MD_OP_INIT(num_private_stats, stats, enqueue);
1420 LPROCFS_MD_OP_INIT(num_private_stats, stats, getattr);
1421 LPROCFS_MD_OP_INIT(num_private_stats, stats, getattr_name);
1422 LPROCFS_MD_OP_INIT(num_private_stats, stats, intent_lock);
1423 LPROCFS_MD_OP_INIT(num_private_stats, stats, link);
1424 LPROCFS_MD_OP_INIT(num_private_stats, stats, rename);
1425 LPROCFS_MD_OP_INIT(num_private_stats, stats, is_subdir);
1426 LPROCFS_MD_OP_INIT(num_private_stats, stats, setattr);
1427 LPROCFS_MD_OP_INIT(num_private_stats, stats, sync);
1428 LPROCFS_MD_OP_INIT(num_private_stats, stats, readpage);
1429 LPROCFS_MD_OP_INIT(num_private_stats, stats, unlink);
1430 LPROCFS_MD_OP_INIT(num_private_stats, stats, setxattr);
1431 LPROCFS_MD_OP_INIT(num_private_stats, stats, getxattr);
1432 LPROCFS_MD_OP_INIT(num_private_stats, stats, init_ea_size);
1433 LPROCFS_MD_OP_INIT(num_private_stats, stats, get_lustre_md);
1434 LPROCFS_MD_OP_INIT(num_private_stats, stats, free_lustre_md);
1435 LPROCFS_MD_OP_INIT(num_private_stats, stats, set_open_replay_data);
1436 LPROCFS_MD_OP_INIT(num_private_stats, stats, clear_open_replay_data);
1437 LPROCFS_MD_OP_INIT(num_private_stats, stats, set_lock_data);
1438 LPROCFS_MD_OP_INIT(num_private_stats, stats, lock_match);
1439 LPROCFS_MD_OP_INIT(num_private_stats, stats, cancel_unused);
1440 LPROCFS_MD_OP_INIT(num_private_stats, stats, renew_capa);
1441 LPROCFS_MD_OP_INIT(num_private_stats, stats, unpack_capa);
1442 LPROCFS_MD_OP_INIT(num_private_stats, stats, get_remote_perm);
1443 LPROCFS_MD_OP_INIT(num_private_stats, stats, intent_getattr_async);
1444 LPROCFS_MD_OP_INIT(num_private_stats, stats, revalidate_lock);
1445 }
1446 EXPORT_SYMBOL(lprocfs_init_mps_stats);
1447
1448 int lprocfs_alloc_md_stats(struct obd_device *obd,
1449 unsigned num_private_stats)
1450 {
1451 struct lprocfs_stats *stats;
1452 unsigned int num_stats;
1453 int rc, i;
1454
1455 LASSERT(obd->md_stats == NULL);
1456 LASSERT(obd->obd_proc_entry != NULL);
1457 LASSERT(obd->md_cntr_base == 0);
1458
1459 num_stats = 1 + MD_COUNTER_OFFSET(revalidate_lock) +
1460 num_private_stats;
1461 stats = lprocfs_alloc_stats(num_stats, 0);
1462 if (stats == NULL)
1463 return -ENOMEM;
1464
1465 lprocfs_init_mps_stats(num_private_stats, stats);
1466
1467 for (i = num_private_stats; i < num_stats; i++) {
1468 if (stats->ls_cnt_header[i].lc_name == NULL) {
1469 CERROR("Missing md_stat initializer md_op "
1470 "operation at offset %d. Aborting.\n",
1471 i - num_private_stats);
1472 LBUG();
1473 }
1474 }
1475 rc = lprocfs_register_stats(obd->obd_proc_entry, "md_stats", stats);
1476 if (rc < 0) {
1477 lprocfs_free_stats(&stats);
1478 } else {
1479 obd->md_stats = stats;
1480 obd->md_cntr_base = num_private_stats;
1481 }
1482 return rc;
1483 }
1484 EXPORT_SYMBOL(lprocfs_alloc_md_stats);
1485
1486 void lprocfs_free_md_stats(struct obd_device *obd)
1487 {
1488 struct lprocfs_stats *stats = obd->md_stats;
1489
1490 if (stats != NULL) {
1491 obd->md_stats = NULL;
1492 obd->md_cntr_base = 0;
1493 lprocfs_free_stats(&stats);
1494 }
1495 }
1496 EXPORT_SYMBOL(lprocfs_free_md_stats);
1497
1498 void lprocfs_init_ldlm_stats(struct lprocfs_stats *ldlm_stats)
1499 {
1500 lprocfs_counter_init(ldlm_stats,
1501 LDLM_ENQUEUE - LDLM_FIRST_OPC,
1502 0, "ldlm_enqueue", "reqs");
1503 lprocfs_counter_init(ldlm_stats,
1504 LDLM_CONVERT - LDLM_FIRST_OPC,
1505 0, "ldlm_convert", "reqs");
1506 lprocfs_counter_init(ldlm_stats,
1507 LDLM_CANCEL - LDLM_FIRST_OPC,
1508 0, "ldlm_cancel", "reqs");
1509 lprocfs_counter_init(ldlm_stats,
1510 LDLM_BL_CALLBACK - LDLM_FIRST_OPC,
1511 0, "ldlm_bl_callback", "reqs");
1512 lprocfs_counter_init(ldlm_stats,
1513 LDLM_CP_CALLBACK - LDLM_FIRST_OPC,
1514 0, "ldlm_cp_callback", "reqs");
1515 lprocfs_counter_init(ldlm_stats,
1516 LDLM_GL_CALLBACK - LDLM_FIRST_OPC,
1517 0, "ldlm_gl_callback", "reqs");
1518 }
1519 EXPORT_SYMBOL(lprocfs_init_ldlm_stats);
1520
1521 int lprocfs_exp_print_uuid(struct cfs_hash *hs, struct cfs_hash_bd *bd,
1522 struct hlist_node *hnode, void *data)
1523
1524 {
1525 struct obd_export *exp = cfs_hash_object(hs, hnode);
1526 struct seq_file *m = (struct seq_file *)data;
1527
1528 if (exp->exp_nid_stats)
1529 seq_printf(m, "%s\n", obd_uuid2str(&exp->exp_client_uuid));
1530
1531 return 0;
1532 }
1533
1534 static int
1535 lproc_exp_uuid_seq_show(struct seq_file *m, void *unused)
1536 {
1537 struct nid_stat *stats = (struct nid_stat *)m->private;
1538 struct obd_device *obd = stats->nid_obd;
1539
1540 cfs_hash_for_each_key(obd->obd_nid_hash, &stats->nid,
1541 lprocfs_exp_print_uuid, m);
1542 return 0;
1543 }
1544
1545 LPROC_SEQ_FOPS_RO(lproc_exp_uuid);
1546
1547 struct exp_hash_cb_data {
1548 struct seq_file *m;
1549 bool first;
1550 };
1551
1552 int lprocfs_exp_print_hash(struct cfs_hash *hs, struct cfs_hash_bd *bd,
1553 struct hlist_node *hnode, void *cb_data)
1554
1555 {
1556 struct exp_hash_cb_data *data = (struct exp_hash_cb_data *)cb_data;
1557 struct obd_export *exp = cfs_hash_object(hs, hnode);
1558
1559 if (exp->exp_lock_hash != NULL) {
1560 if (data->first) {
1561 cfs_hash_debug_header(data->m);
1562 data->first = false;
1563 }
1564 cfs_hash_debug_str(hs, data->m);
1565 }
1566
1567 return 0;
1568 }
1569
1570 static int
1571 lproc_exp_hash_seq_show(struct seq_file *m, void *unused)
1572 {
1573 struct nid_stat *stats = (struct nid_stat *)m->private;
1574 struct obd_device *obd = stats->nid_obd;
1575 struct exp_hash_cb_data cb_data = {m, true};
1576
1577 cfs_hash_for_each_key(obd->obd_nid_hash, &stats->nid,
1578 lprocfs_exp_print_hash, &cb_data);
1579 return 0;
1580 }
1581
1582 LPROC_SEQ_FOPS_RO(lproc_exp_hash);
1583
1584 int lprocfs_nid_stats_clear_read(struct seq_file *m, void *data)
1585 {
1586 return seq_printf(m, "%s\n",
1587 "Write into this file to clear all nid stats and "
1588 "stale nid entries");
1589 }
1590 EXPORT_SYMBOL(lprocfs_nid_stats_clear_read);
1591
1592 static int lprocfs_nid_stats_clear_write_cb(void *obj, void *data)
1593 {
1594 struct nid_stat *stat = obj;
1595
1596 CDEBUG(D_INFO,"refcnt %d\n", atomic_read(&stat->nid_exp_ref_count));
1597 if (atomic_read(&stat->nid_exp_ref_count) == 1) {
1598 /* object has only hash references. */
1599 spin_lock(&stat->nid_obd->obd_nid_lock);
1600 list_move(&stat->nid_list, data);
1601 spin_unlock(&stat->nid_obd->obd_nid_lock);
1602 return 1;
1603 }
1604 /* we has reference to object - only clear data*/
1605 if (stat->nid_stats)
1606 lprocfs_clear_stats(stat->nid_stats);
1607
1608 return 0;
1609 }
1610
1611 int lprocfs_nid_stats_clear_write(struct file *file, const char *buffer,
1612 unsigned long count, void *data)
1613 {
1614 struct obd_device *obd = (struct obd_device *)data;
1615 struct nid_stat *client_stat;
1616 LIST_HEAD(free_list);
1617
1618 cfs_hash_cond_del(obd->obd_nid_stats_hash,
1619 lprocfs_nid_stats_clear_write_cb, &free_list);
1620
1621 while (!list_empty(&free_list)) {
1622 client_stat = list_entry(free_list.next, struct nid_stat,
1623 nid_list);
1624 list_del_init(&client_stat->nid_list);
1625 lprocfs_free_client_stats(client_stat);
1626 }
1627
1628 return count;
1629 }
1630 EXPORT_SYMBOL(lprocfs_nid_stats_clear_write);
1631
1632 int lprocfs_exp_setup(struct obd_export *exp, lnet_nid_t *nid, int *newnid)
1633 {
1634 struct nid_stat *new_stat, *old_stat;
1635 struct obd_device *obd = NULL;
1636 struct proc_dir_entry *entry;
1637 char *buffer = NULL;
1638 int rc = 0;
1639
1640 *newnid = 0;
1641
1642 if (!exp || !exp->exp_obd || !exp->exp_obd->obd_proc_exports_entry ||
1643 !exp->exp_obd->obd_nid_stats_hash)
1644 return -EINVAL;
1645
1646 /* not test against zero because eric say:
1647 * You may only test nid against another nid, or LNET_NID_ANY.
1648 * Anything else is nonsense.*/
1649 if (!nid || *nid == LNET_NID_ANY)
1650 return 0;
1651
1652 obd = exp->exp_obd;
1653
1654 CDEBUG(D_CONFIG, "using hash %p\n", obd->obd_nid_stats_hash);
1655
1656 OBD_ALLOC_PTR(new_stat);
1657 if (new_stat == NULL)
1658 return -ENOMEM;
1659
1660 new_stat->nid = *nid;
1661 new_stat->nid_obd = exp->exp_obd;
1662 /* we need set default refcount to 1 to balance obd_disconnect */
1663 atomic_set(&new_stat->nid_exp_ref_count, 1);
1664
1665 old_stat = cfs_hash_findadd_unique(obd->obd_nid_stats_hash,
1666 nid, &new_stat->nid_hash);
1667 CDEBUG(D_INFO, "Found stats %p for nid %s - ref %d\n",
1668 old_stat, libcfs_nid2str(*nid),
1669 atomic_read(&new_stat->nid_exp_ref_count));
1670
1671 /* We need to release old stats because lprocfs_exp_cleanup() hasn't
1672 * been and will never be called. */
1673 if (exp->exp_nid_stats) {
1674 nidstat_putref(exp->exp_nid_stats);
1675 exp->exp_nid_stats = NULL;
1676 }
1677
1678 /* Return -EALREADY here so that we know that the /proc
1679 * entry already has been created */
1680 if (old_stat != new_stat) {
1681 exp->exp_nid_stats = old_stat;
1682 GOTO(destroy_new, rc = -EALREADY);
1683 }
1684 /* not found - create */
1685 OBD_ALLOC(buffer, LNET_NIDSTR_SIZE);
1686 if (buffer == NULL)
1687 GOTO(destroy_new, rc = -ENOMEM);
1688
1689 memcpy(buffer, libcfs_nid2str(*nid), LNET_NIDSTR_SIZE);
1690 new_stat->nid_proc = lprocfs_register(buffer,
1691 obd->obd_proc_exports_entry,
1692 NULL, NULL);
1693 OBD_FREE(buffer, LNET_NIDSTR_SIZE);
1694
1695 if (IS_ERR(new_stat->nid_proc)) {
1696 CERROR("Error making export directory for nid %s\n",
1697 libcfs_nid2str(*nid));
1698 rc = PTR_ERR(new_stat->nid_proc);
1699 new_stat->nid_proc = NULL;
1700 GOTO(destroy_new_ns, rc);
1701 }
1702
1703 entry = lprocfs_add_simple(new_stat->nid_proc, "uuid",
1704 new_stat, &lproc_exp_uuid_fops);
1705 if (IS_ERR(entry)) {
1706 CWARN("Error adding the NID stats file\n");
1707 rc = PTR_ERR(entry);
1708 GOTO(destroy_new_ns, rc);
1709 }
1710
1711 entry = lprocfs_add_simple(new_stat->nid_proc, "hash",
1712 new_stat, &lproc_exp_hash_fops);
1713 if (IS_ERR(entry)) {
1714 CWARN("Error adding the hash file\n");
1715 rc = PTR_ERR(entry);
1716 GOTO(destroy_new_ns, rc);
1717 }
1718
1719 exp->exp_nid_stats = new_stat;
1720 *newnid = 1;
1721 /* protect competitive add to list, not need locking on destroy */
1722 spin_lock(&obd->obd_nid_lock);
1723 list_add(&new_stat->nid_list, &obd->obd_nid_stats);
1724 spin_unlock(&obd->obd_nid_lock);
1725
1726 return rc;
1727
1728 destroy_new_ns:
1729 if (new_stat->nid_proc != NULL)
1730 lprocfs_remove(&new_stat->nid_proc);
1731 cfs_hash_del(obd->obd_nid_stats_hash, nid, &new_stat->nid_hash);
1732
1733 destroy_new:
1734 nidstat_putref(new_stat);
1735 OBD_FREE_PTR(new_stat);
1736 return rc;
1737 }
1738 EXPORT_SYMBOL(lprocfs_exp_setup);
1739
1740 int lprocfs_exp_cleanup(struct obd_export *exp)
1741 {
1742 struct nid_stat *stat = exp->exp_nid_stats;
1743
1744 if(!stat || !exp->exp_obd)
1745 return 0;
1746
1747 nidstat_putref(exp->exp_nid_stats);
1748 exp->exp_nid_stats = NULL;
1749
1750 return 0;
1751 }
1752 EXPORT_SYMBOL(lprocfs_exp_cleanup);
1753
1754 int lprocfs_write_helper(const char *buffer, unsigned long count,
1755 int *val)
1756 {
1757 return lprocfs_write_frac_helper(buffer, count, val, 1);
1758 }
1759 EXPORT_SYMBOL(lprocfs_write_helper);
1760
1761 int lprocfs_seq_read_frac_helper(struct seq_file *m, long val, int mult)
1762 {
1763 long decimal_val, frac_val;
1764
1765 decimal_val = val / mult;
1766 seq_printf(m, "%ld", decimal_val);
1767 frac_val = val % mult;
1768
1769 if (frac_val > 0) {
1770 frac_val *= 100;
1771 frac_val /= mult;
1772 }
1773 if (frac_val > 0) {
1774 /* Three cases: x0, xx, 0x */
1775 if ((frac_val % 10) != 0)
1776 seq_printf(m, ".%ld", frac_val);
1777 else
1778 seq_printf(m, ".%ld", frac_val / 10);
1779 }
1780
1781 seq_printf(m, "\n");
1782 return 0;
1783 }
1784 EXPORT_SYMBOL(lprocfs_seq_read_frac_helper);
1785
1786 int lprocfs_write_u64_helper(const char *buffer, unsigned long count,__u64 *val)
1787 {
1788 return lprocfs_write_frac_u64_helper(buffer, count, val, 1);
1789 }
1790 EXPORT_SYMBOL(lprocfs_write_u64_helper);
1791
1792 int lprocfs_write_frac_u64_helper(const char *buffer, unsigned long count,
1793 __u64 *val, int mult)
1794 {
1795 char kernbuf[22], *end, *pbuf;
1796 __u64 whole, frac = 0, units;
1797 unsigned frac_d = 1;
1798
1799 if (count > (sizeof(kernbuf) - 1))
1800 return -EINVAL;
1801
1802 if (copy_from_user(kernbuf, buffer, count))
1803 return -EFAULT;
1804
1805 kernbuf[count] = '\0';
1806 pbuf = kernbuf;
1807 if (*pbuf == '-') {
1808 mult = -mult;
1809 pbuf++;
1810 }
1811
1812 whole = simple_strtoull(pbuf, &end, 10);
1813 if (pbuf == end)
1814 return -EINVAL;
1815
1816 if (end != NULL && *end == '.') {
1817 int i;
1818 pbuf = end + 1;
1819
1820 /* need to limit frac_d to a __u32 */
1821 if (strlen(pbuf) > 10)
1822 pbuf[10] = '\0';
1823
1824 frac = simple_strtoull(pbuf, &end, 10);
1825 /* count decimal places */
1826 for (i = 0; i < (end - pbuf); i++)
1827 frac_d *= 10;
1828 }
1829
1830 units = 1;
1831 switch(*end) {
1832 case 'p': case 'P':
1833 units <<= 10;
1834 case 't': case 'T':
1835 units <<= 10;
1836 case 'g': case 'G':
1837 units <<= 10;
1838 case 'm': case 'M':
1839 units <<= 10;
1840 case 'k': case 'K':
1841 units <<= 10;
1842 }
1843 /* Specified units override the multiplier */
1844 if (units)
1845 mult = mult < 0 ? -units : units;
1846
1847 frac *= mult;
1848 do_div(frac, frac_d);
1849 *val = whole * mult + frac;
1850 return 0;
1851 }
1852 EXPORT_SYMBOL(lprocfs_write_frac_u64_helper);
1853
1854 static char *lprocfs_strnstr(const char *s1, const char *s2, size_t len)
1855 {
1856 size_t l2;
1857
1858 l2 = strlen(s2);
1859 if (!l2)
1860 return (char *)s1;
1861 while (len >= l2) {
1862 len--;
1863 if (!memcmp(s1, s2, l2))
1864 return (char *)s1;
1865 s1++;
1866 }
1867 return NULL;
1868 }
1869
1870 /**
1871 * Find the string \a name in the input \a buffer, and return a pointer to the
1872 * value immediately following \a name, reducing \a count appropriately.
1873 * If \a name is not found the original \a buffer is returned.
1874 */
1875 char *lprocfs_find_named_value(const char *buffer, const char *name,
1876 size_t *count)
1877 {
1878 char *val;
1879 size_t buflen = *count;
1880
1881 /* there is no strnstr() in rhel5 and ubuntu kernels */
1882 val = lprocfs_strnstr(buffer, name, buflen);
1883 if (val == NULL)
1884 return (char *)buffer;
1885
1886 val += strlen(name); /* skip prefix */
1887 while (val < buffer + buflen && isspace(*val)) /* skip separator */
1888 val++;
1889
1890 *count = 0;
1891 while (val < buffer + buflen && isalnum(*val)) {
1892 ++*count;
1893 ++val;
1894 }
1895
1896 return val - *count;
1897 }
1898 EXPORT_SYMBOL(lprocfs_find_named_value);
1899
1900 int lprocfs_seq_create(struct proc_dir_entry *parent,
1901 const char *name,
1902 umode_t mode,
1903 const struct file_operations *seq_fops,
1904 void *data)
1905 {
1906 struct proc_dir_entry *entry;
1907
1908 /* Disallow secretly (un)writable entries. */
1909 LASSERT((seq_fops->write == NULL) == ((mode & 0222) == 0));
1910 entry = proc_create_data(name, mode, parent, seq_fops, data);
1911
1912 if (entry == NULL)
1913 return -ENOMEM;
1914
1915 return 0;
1916 }
1917 EXPORT_SYMBOL(lprocfs_seq_create);
1918
1919 int lprocfs_obd_seq_create(struct obd_device *dev,
1920 const char *name,
1921 umode_t mode,
1922 const struct file_operations *seq_fops,
1923 void *data)
1924 {
1925 return (lprocfs_seq_create(dev->obd_proc_entry, name,
1926 mode, seq_fops, data));
1927 }
1928 EXPORT_SYMBOL(lprocfs_obd_seq_create);
1929
1930 void lprocfs_oh_tally(struct obd_histogram *oh, unsigned int value)
1931 {
1932 if (value >= OBD_HIST_MAX)
1933 value = OBD_HIST_MAX - 1;
1934
1935 spin_lock(&oh->oh_lock);
1936 oh->oh_buckets[value]++;
1937 spin_unlock(&oh->oh_lock);
1938 }
1939 EXPORT_SYMBOL(lprocfs_oh_tally);
1940
1941 void lprocfs_oh_tally_log2(struct obd_histogram *oh, unsigned int value)
1942 {
1943 unsigned int val;
1944
1945 for (val = 0; ((1 << val) < value) && (val <= OBD_HIST_MAX); val++)
1946 ;
1947
1948 lprocfs_oh_tally(oh, val);
1949 }
1950 EXPORT_SYMBOL(lprocfs_oh_tally_log2);
1951
1952 unsigned long lprocfs_oh_sum(struct obd_histogram *oh)
1953 {
1954 unsigned long ret = 0;
1955 int i;
1956
1957 for (i = 0; i < OBD_HIST_MAX; i++)
1958 ret += oh->oh_buckets[i];
1959 return ret;
1960 }
1961 EXPORT_SYMBOL(lprocfs_oh_sum);
1962
1963 void lprocfs_oh_clear(struct obd_histogram *oh)
1964 {
1965 spin_lock(&oh->oh_lock);
1966 memset(oh->oh_buckets, 0, sizeof(oh->oh_buckets));
1967 spin_unlock(&oh->oh_lock);
1968 }
1969 EXPORT_SYMBOL(lprocfs_oh_clear);
1970
1971 int lprocfs_obd_rd_max_pages_per_rpc(struct seq_file *m, void *data)
1972 {
1973 struct obd_device *dev = data;
1974 struct client_obd *cli = &dev->u.cli;
1975 int rc;
1976
1977 client_obd_list_lock(&cli->cl_loi_list_lock);
1978 rc = seq_printf(m, "%d\n", cli->cl_max_pages_per_rpc);
1979 client_obd_list_unlock(&cli->cl_loi_list_lock);
1980 return rc;
1981 }
1982 EXPORT_SYMBOL(lprocfs_obd_rd_max_pages_per_rpc);
1983
1984 #endif
Linux kernel - Deliverables
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