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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 "../include/obd_class.h"
45 #include "../include/lprocfs_status.h"
46 #include "../include/lustre/lustre_idl.h"
47 #include <linux/seq_file.h>
48 #include <linux/ctype.h>
49
50 static const char * const obd_connect_names[] = {
51 "read_only",
52 "lov_index",
53 "unused",
54 "write_grant",
55 "server_lock",
56 "version",
57 "request_portal",
58 "acl",
59 "xattr",
60 "create_on_write",
61 "truncate_lock",
62 "initial_transno",
63 "inode_bit_locks",
64 "join_file(obsolete)",
65 "getattr_by_fid",
66 "no_oh_for_devices",
67 "remote_client",
68 "remote_client_by_force",
69 "max_byte_per_rpc",
70 "64bit_qdata",
71 "mds_capability",
72 "oss_capability",
73 "early_lock_cancel",
74 "som",
75 "adaptive_timeouts",
76 "lru_resize",
77 "mds_mds_connection",
78 "real_conn",
79 "change_qunit_size",
80 "alt_checksum_algorithm",
81 "fid_is_enabled",
82 "version_recovery",
83 "pools",
84 "grant_shrink",
85 "skip_orphan",
86 "large_ea",
87 "full20",
88 "layout_lock",
89 "64bithash",
90 "object_max_bytes",
91 "imp_recov",
92 "jobstats",
93 "umask",
94 "einprogress",
95 "grant_param",
96 "flock_owner",
97 "lvb_type",
98 "nanoseconds_times",
99 "lightweight_conn",
100 "short_io",
101 "pingless",
102 "flock_deadlock",
103 "disp_stripe",
104 "unknown",
105 NULL
106 };
107
108 int obd_connect_flags2str(char *page, int count, __u64 flags, char *sep)
109 {
110 __u64 mask = 1;
111 int i, ret = 0;
112
113 for (i = 0; obd_connect_names[i] != NULL; i++, mask <<= 1) {
114 if (flags & mask)
115 ret += snprintf(page + ret, count - ret, "%s%s",
116 ret ? sep : "", obd_connect_names[i]);
117 }
118 if (flags & ~(mask - 1))
119 ret += snprintf(page + ret, count - ret,
120 "%sunknown flags %#llx",
121 ret ? sep : "", flags & ~(mask - 1));
122 return ret;
123 }
124 EXPORT_SYMBOL(obd_connect_flags2str);
125
126 int lprocfs_read_frac_helper(char *buffer, unsigned long count, long val,
127 int mult)
128 {
129 long decimal_val, frac_val;
130 int prtn;
131
132 if (count < 10)
133 return -EINVAL;
134
135 decimal_val = val / mult;
136 prtn = snprintf(buffer, count, "%ld", decimal_val);
137 frac_val = val % mult;
138
139 if (prtn < (count - 4) && frac_val > 0) {
140 long temp_frac;
141 int i, temp_mult = 1, frac_bits = 0;
142
143 temp_frac = frac_val * 10;
144 buffer[prtn++] = '.';
145 while (frac_bits < 2 && (temp_frac / mult) < 1) {
146 /* only reserved 2 bits fraction */
147 buffer[prtn++] = '0';
148 temp_frac *= 10;
149 frac_bits++;
150 }
151 /*
152 * Need to think these cases :
153 * 1. #echo x.00 > /proc/xxx output result : x
154 * 2. #echo x.0x > /proc/xxx output result : x.0x
155 * 3. #echo x.x0 > /proc/xxx output result : x.x
156 * 4. #echo x.xx > /proc/xxx output result : x.xx
157 * Only reserved 2 bits fraction.
158 */
159 for (i = 0; i < (5 - prtn); i++)
160 temp_mult *= 10;
161
162 frac_bits = min((int)count - prtn, 3 - frac_bits);
163 prtn += snprintf(buffer + prtn, frac_bits, "%ld",
164 frac_val * temp_mult / mult);
165
166 prtn--;
167 while (buffer[prtn] < '1' || buffer[prtn] > '9') {
168 prtn--;
169 if (buffer[prtn] == '.') {
170 prtn--;
171 break;
172 }
173 }
174 prtn++;
175 }
176 buffer[prtn++] = '\n';
177 return prtn;
178 }
179 EXPORT_SYMBOL(lprocfs_read_frac_helper);
180
181 int lprocfs_write_frac_helper(const char __user *buffer, unsigned long count,
182 int *val, int mult)
183 {
184 char kernbuf[20], *end, *pbuf;
185
186 if (count > (sizeof(kernbuf) - 1))
187 return -EINVAL;
188
189 if (copy_from_user(kernbuf, buffer, count))
190 return -EFAULT;
191
192 kernbuf[count] = '\0';
193 pbuf = kernbuf;
194 if (*pbuf == '-') {
195 mult = -mult;
196 pbuf++;
197 }
198
199 *val = (int)simple_strtoul(pbuf, &end, 10) * mult;
200 if (pbuf == end)
201 return -EINVAL;
202
203 if (end != NULL && *end == '.') {
204 int temp_val, pow = 1;
205 int i;
206
207 pbuf = end + 1;
208 if (strlen(pbuf) > 5)
209 pbuf[5] = '\0'; /*only allow 5bits fractional*/
210
211 temp_val = (int)simple_strtoul(pbuf, &end, 10) * mult;
212
213 if (pbuf < end) {
214 for (i = 0; i < (end - pbuf); i++)
215 pow *= 10;
216
217 *val += temp_val / pow;
218 }
219 }
220 return 0;
221 }
222 EXPORT_SYMBOL(lprocfs_write_frac_helper);
223
224 #if defined (CONFIG_PROC_FS)
225
226 static int lprocfs_no_percpu_stats = 0;
227 module_param(lprocfs_no_percpu_stats, int, 0644);
228 MODULE_PARM_DESC(lprocfs_no_percpu_stats, "Do not alloc percpu data for lprocfs stats");
229
230 #define MAX_STRING_SIZE 128
231
232 int lprocfs_single_release(struct inode *inode, struct file *file)
233 {
234 return single_release(inode, file);
235 }
236 EXPORT_SYMBOL(lprocfs_single_release);
237
238 int lprocfs_seq_release(struct inode *inode, struct file *file)
239 {
240 return seq_release(inode, file);
241 }
242 EXPORT_SYMBOL(lprocfs_seq_release);
243
244 /* lprocfs API calls */
245
246 struct proc_dir_entry *lprocfs_add_simple(struct proc_dir_entry *root,
247 char *name, void *data,
248 struct file_operations *fops)
249 {
250 struct proc_dir_entry *proc;
251 umode_t mode = 0;
252
253 if (root == NULL || name == NULL || fops == NULL)
254 return ERR_PTR(-EINVAL);
255
256 if (fops->read)
257 mode = 0444;
258 if (fops->write)
259 mode |= 0200;
260 proc = proc_create_data(name, mode, root, fops, data);
261 if (!proc) {
262 CERROR("LprocFS: No memory to create /proc entry %s", name);
263 return ERR_PTR(-ENOMEM);
264 }
265 return proc;
266 }
267 EXPORT_SYMBOL(lprocfs_add_simple);
268
269 struct proc_dir_entry *lprocfs_add_symlink(const char *name,
270 struct proc_dir_entry *parent, const char *format, ...)
271 {
272 struct proc_dir_entry *entry;
273 char *dest;
274 va_list ap;
275
276 if (parent == NULL || format == NULL)
277 return NULL;
278
279 OBD_ALLOC_WAIT(dest, MAX_STRING_SIZE + 1);
280 if (dest == NULL)
281 return NULL;
282
283 va_start(ap, format);
284 vsnprintf(dest, MAX_STRING_SIZE, format, ap);
285 va_end(ap);
286
287 entry = proc_symlink(name, parent, dest);
288 if (entry == NULL)
289 CERROR("LprocFS: Could not create symbolic link from %s to %s",
290 name, dest);
291
292 OBD_FREE(dest, MAX_STRING_SIZE + 1);
293 return entry;
294 }
295 EXPORT_SYMBOL(lprocfs_add_symlink);
296
297 static struct file_operations lprocfs_generic_fops = { };
298
299 /**
300 * Add /proc entries.
301 *
302 * \param root [in] The parent proc entry on which new entry will be added.
303 * \param list [in] Array of proc entries to be added.
304 * \param data [in] The argument to be passed when entries read/write routines
305 * are called through /proc file.
306 *
307 * \retval 0 on success
308 * < 0 on error
309 */
310 int lprocfs_add_vars(struct proc_dir_entry *root, struct lprocfs_vars *list,
311 void *data)
312 {
313 if (root == NULL || list == NULL)
314 return -EINVAL;
315
316 while (list->name != NULL) {
317 struct proc_dir_entry *proc;
318 umode_t mode = 0;
319
320 if (list->proc_mode != 0000) {
321 mode = list->proc_mode;
322 } else if (list->fops) {
323 if (list->fops->read)
324 mode = 0444;
325 if (list->fops->write)
326 mode |= 0200;
327 }
328 proc = proc_create_data(list->name, mode, root,
329 list->fops ?: &lprocfs_generic_fops,
330 list->data ?: data);
331 if (proc == NULL)
332 return -ENOMEM;
333 list++;
334 }
335 return 0;
336 }
337 EXPORT_SYMBOL(lprocfs_add_vars);
338
339 void lprocfs_remove(struct proc_dir_entry **rooth)
340 {
341 proc_remove(*rooth);
342 *rooth = NULL;
343 }
344 EXPORT_SYMBOL(lprocfs_remove);
345
346 void lprocfs_remove_proc_entry(const char *name, struct proc_dir_entry *parent)
347 {
348 LASSERT(parent != NULL);
349 remove_proc_entry(name, parent);
350 }
351 EXPORT_SYMBOL(lprocfs_remove_proc_entry);
352
353 struct proc_dir_entry *lprocfs_register(const char *name,
354 struct proc_dir_entry *parent,
355 struct lprocfs_vars *list, void *data)
356 {
357 struct proc_dir_entry *entry;
358
359 entry = proc_mkdir(name, parent);
360 if (entry == NULL) {
361 entry = ERR_PTR(-ENOMEM);
362 goto out;
363 }
364
365 if (list != NULL) {
366 int rc = lprocfs_add_vars(entry, list, data);
367 if (rc != 0) {
368 lprocfs_remove(&entry);
369 entry = ERR_PTR(rc);
370 }
371 }
372 out:
373 return entry;
374 }
375 EXPORT_SYMBOL(lprocfs_register);
376
377 /* Generic callbacks */
378 int lprocfs_rd_uint(struct seq_file *m, void *data)
379 {
380 return seq_printf(m, "%u\n", *(unsigned int *)data);
381 }
382 EXPORT_SYMBOL(lprocfs_rd_uint);
383
384 int lprocfs_wr_uint(struct file *file, const char __user *buffer,
385 unsigned long count, void *data)
386 {
387 unsigned *p = data;
388 char dummy[MAX_STRING_SIZE + 1], *end;
389 unsigned long tmp;
390
391 dummy[MAX_STRING_SIZE] = '\0';
392 if (copy_from_user(dummy, buffer, MAX_STRING_SIZE))
393 return -EFAULT;
394
395 tmp = simple_strtoul(dummy, &end, 0);
396 if (dummy == end)
397 return -EINVAL;
398
399 *p = (unsigned int)tmp;
400 return count;
401 }
402 EXPORT_SYMBOL(lprocfs_wr_uint);
403
404 int lprocfs_rd_u64(struct seq_file *m, void *data)
405 {
406 return seq_printf(m, "%llu\n", *(__u64 *)data);
407 }
408 EXPORT_SYMBOL(lprocfs_rd_u64);
409
410 int lprocfs_rd_atomic(struct seq_file *m, void *data)
411 {
412 atomic_t *atom = data;
413 LASSERT(atom != NULL);
414 return seq_printf(m, "%d\n", atomic_read(atom));
415 }
416 EXPORT_SYMBOL(lprocfs_rd_atomic);
417
418 int lprocfs_wr_atomic(struct file *file, const char __user *buffer,
419 unsigned long count, void *data)
420 {
421 atomic_t *atm = data;
422 int val = 0;
423 int rc;
424
425 rc = lprocfs_write_helper(buffer, count, &val);
426 if (rc < 0)
427 return rc;
428
429 if (val <= 0)
430 return -ERANGE;
431
432 atomic_set(atm, val);
433 return count;
434 }
435 EXPORT_SYMBOL(lprocfs_wr_atomic);
436
437 int lprocfs_rd_uuid(struct seq_file *m, void *data)
438 {
439 struct obd_device *obd = data;
440
441 LASSERT(obd != NULL);
442 return seq_printf(m, "%s\n", obd->obd_uuid.uuid);
443 }
444 EXPORT_SYMBOL(lprocfs_rd_uuid);
445
446 int lprocfs_rd_name(struct seq_file *m, void *data)
447 {
448 struct obd_device *dev = data;
449
450 LASSERT(dev != NULL);
451 return seq_printf(m, "%s\n", dev->obd_name);
452 }
453 EXPORT_SYMBOL(lprocfs_rd_name);
454
455 int lprocfs_rd_blksize(struct seq_file *m, void *data)
456 {
457 struct obd_device *obd = data;
458 struct obd_statfs osfs;
459 int rc = obd_statfs(NULL, obd->obd_self_export, &osfs,
460 cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS),
461 OBD_STATFS_NODELAY);
462 if (!rc)
463 rc = seq_printf(m, "%u\n", osfs.os_bsize);
464 return rc;
465 }
466 EXPORT_SYMBOL(lprocfs_rd_blksize);
467
468 int lprocfs_rd_kbytestotal(struct seq_file *m, void *data)
469 {
470 struct obd_device *obd = data;
471 struct obd_statfs osfs;
472 int rc = obd_statfs(NULL, obd->obd_self_export, &osfs,
473 cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS),
474 OBD_STATFS_NODELAY);
475 if (!rc) {
476 __u32 blk_size = osfs.os_bsize >> 10;
477 __u64 result = osfs.os_blocks;
478
479 while (blk_size >>= 1)
480 result <<= 1;
481
482 rc = seq_printf(m, "%llu\n", result);
483 }
484 return rc;
485 }
486 EXPORT_SYMBOL(lprocfs_rd_kbytestotal);
487
488 int lprocfs_rd_kbytesfree(struct seq_file *m, void *data)
489 {
490 struct obd_device *obd = data;
491 struct obd_statfs osfs;
492 int rc = obd_statfs(NULL, obd->obd_self_export, &osfs,
493 cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS),
494 OBD_STATFS_NODELAY);
495 if (!rc) {
496 __u32 blk_size = osfs.os_bsize >> 10;
497 __u64 result = osfs.os_bfree;
498
499 while (blk_size >>= 1)
500 result <<= 1;
501
502 rc = seq_printf(m, "%llu\n", result);
503 }
504 return rc;
505 }
506 EXPORT_SYMBOL(lprocfs_rd_kbytesfree);
507
508 int lprocfs_rd_kbytesavail(struct seq_file *m, void *data)
509 {
510 struct obd_device *obd = data;
511 struct obd_statfs osfs;
512 int rc = obd_statfs(NULL, obd->obd_self_export, &osfs,
513 cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS),
514 OBD_STATFS_NODELAY);
515 if (!rc) {
516 __u32 blk_size = osfs.os_bsize >> 10;
517 __u64 result = osfs.os_bavail;
518
519 while (blk_size >>= 1)
520 result <<= 1;
521
522 rc = seq_printf(m, "%llu\n", result);
523 }
524 return rc;
525 }
526 EXPORT_SYMBOL(lprocfs_rd_kbytesavail);
527
528 int lprocfs_rd_filestotal(struct seq_file *m, void *data)
529 {
530 struct obd_device *obd = data;
531 struct obd_statfs osfs;
532 int rc = obd_statfs(NULL, obd->obd_self_export, &osfs,
533 cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS),
534 OBD_STATFS_NODELAY);
535 if (!rc)
536 rc = seq_printf(m, "%llu\n", osfs.os_files);
537
538 return rc;
539 }
540 EXPORT_SYMBOL(lprocfs_rd_filestotal);
541
542 int lprocfs_rd_filesfree(struct seq_file *m, void *data)
543 {
544 struct obd_device *obd = data;
545 struct obd_statfs osfs;
546 int rc = obd_statfs(NULL, obd->obd_self_export, &osfs,
547 cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS),
548 OBD_STATFS_NODELAY);
549 if (!rc)
550 rc = seq_printf(m, "%llu\n", osfs.os_ffree);
551 return rc;
552 }
553 EXPORT_SYMBOL(lprocfs_rd_filesfree);
554
555 int lprocfs_rd_server_uuid(struct seq_file *m, void *data)
556 {
557 struct obd_device *obd = data;
558 struct obd_import *imp;
559 char *imp_state_name = NULL;
560 int rc = 0;
561
562 LASSERT(obd != NULL);
563 LPROCFS_CLIMP_CHECK(obd);
564 imp = obd->u.cli.cl_import;
565 imp_state_name = ptlrpc_import_state_name(imp->imp_state);
566 rc = seq_printf(m, "%s\t%s%s\n", obd2cli_tgt(obd), imp_state_name,
567 imp->imp_deactive ? "\tDEACTIVATED" : "");
568
569 LPROCFS_CLIMP_EXIT(obd);
570 return rc;
571 }
572 EXPORT_SYMBOL(lprocfs_rd_server_uuid);
573
574 int lprocfs_rd_conn_uuid(struct seq_file *m, void *data)
575 {
576 struct obd_device *obd = data;
577 struct ptlrpc_connection *conn;
578 int rc = 0;
579
580 LASSERT(obd != NULL);
581
582 LPROCFS_CLIMP_CHECK(obd);
583 conn = obd->u.cli.cl_import->imp_connection;
584 if (conn && obd->u.cli.cl_import)
585 rc = seq_printf(m, "%s\n", conn->c_remote_uuid.uuid);
586 else
587 rc = seq_printf(m, "%s\n", "<none>");
588
589 LPROCFS_CLIMP_EXIT(obd);
590 return rc;
591 }
592 EXPORT_SYMBOL(lprocfs_rd_conn_uuid);
593
594 /** add up per-cpu counters */
595 void lprocfs_stats_collect(struct lprocfs_stats *stats, int idx,
596 struct lprocfs_counter *cnt)
597 {
598 unsigned int num_entry;
599 struct lprocfs_counter *percpu_cntr;
600 int i;
601 unsigned long flags = 0;
602
603 memset(cnt, 0, sizeof(*cnt));
604
605 if (stats == NULL) {
606 /* set count to 1 to avoid divide-by-zero errs in callers */
607 cnt->lc_count = 1;
608 return;
609 }
610
611 cnt->lc_min = LC_MIN_INIT;
612
613 num_entry = lprocfs_stats_lock(stats, LPROCFS_GET_NUM_CPU, &flags);
614
615 for (i = 0; i < num_entry; i++) {
616 if (stats->ls_percpu[i] == NULL)
617 continue;
618 percpu_cntr = lprocfs_stats_counter_get(stats, i, idx);
619
620 cnt->lc_count += percpu_cntr->lc_count;
621 cnt->lc_sum += percpu_cntr->lc_sum;
622 if (percpu_cntr->lc_min < cnt->lc_min)
623 cnt->lc_min = percpu_cntr->lc_min;
624 if (percpu_cntr->lc_max > cnt->lc_max)
625 cnt->lc_max = percpu_cntr->lc_max;
626 cnt->lc_sumsquare += percpu_cntr->lc_sumsquare;
627 }
628
629 lprocfs_stats_unlock(stats, LPROCFS_GET_NUM_CPU, &flags);
630 }
631 EXPORT_SYMBOL(lprocfs_stats_collect);
632
633 /**
634 * Append a space separated list of current set flags to str.
635 */
636 #define flag2str(flag, first) \
637 do { \
638 if (imp->imp_##flag) \
639 seq_printf(m, "%s" #flag, first ? "" : ", "); \
640 } while (0)
641 static int obd_import_flags2str(struct obd_import *imp, struct seq_file *m)
642 {
643 bool first = true;
644
645 if (imp->imp_obd->obd_no_recov) {
646 seq_printf(m, "no_recov");
647 first = false;
648 }
649
650 flag2str(invalid, first);
651 first = false;
652 flag2str(deactive, first);
653 flag2str(replayable, first);
654 flag2str(pingable, first);
655 return 0;
656 }
657 #undef flags2str
658
659 static void obd_connect_seq_flags2str(struct seq_file *m, __u64 flags, char *sep)
660 {
661 __u64 mask = 1;
662 int i;
663 bool first = true;
664
665 for (i = 0; obd_connect_names[i] != NULL; i++, mask <<= 1) {
666 if (flags & mask) {
667 seq_printf(m, "%s%s",
668 first ? sep : "", obd_connect_names[i]);
669 first = false;
670 }
671 }
672 if (flags & ~(mask - 1))
673 seq_printf(m, "%sunknown flags %#llx",
674 first ? sep : "", flags & ~(mask - 1));
675 }
676
677 int lprocfs_rd_import(struct seq_file *m, void *data)
678 {
679 struct lprocfs_counter ret;
680 struct lprocfs_counter_header *header;
681 struct obd_device *obd = (struct obd_device *)data;
682 struct obd_import *imp;
683 struct obd_import_conn *conn;
684 int j;
685 int k;
686 int rw = 0;
687
688 LASSERT(obd != NULL);
689 LPROCFS_CLIMP_CHECK(obd);
690 imp = obd->u.cli.cl_import;
691
692 seq_printf(m,
693 "import:\n"
694 " name: %s\n"
695 " target: %s\n"
696 " state: %s\n"
697 " instance: %u\n"
698 " connect_flags: [",
699 obd->obd_name,
700 obd2cli_tgt(obd),
701 ptlrpc_import_state_name(imp->imp_state),
702 imp->imp_connect_data.ocd_instance);
703 obd_connect_seq_flags2str(m, imp->imp_connect_data.ocd_connect_flags, ", ");
704 seq_printf(m,
705 "]\n"
706 " import_flags: [");
707 obd_import_flags2str(imp, m);
708
709 seq_printf(m,
710 "]\n"
711 " connection:\n"
712 " failover_nids: [");
713 spin_lock(&imp->imp_lock);
714 j = 0;
715 list_for_each_entry(conn, &imp->imp_conn_list, oic_item) {
716 seq_printf(m, "%s%s", j ? ", " : "",
717 libcfs_nid2str(conn->oic_conn->c_peer.nid));
718 j++;
719 }
720 seq_printf(m,
721 "]\n"
722 " current_connection: %s\n"
723 " connection_attempts: %u\n"
724 " generation: %u\n"
725 " in-progress_invalidations: %u\n",
726 imp->imp_connection == NULL ? "<none>" :
727 libcfs_nid2str(imp->imp_connection->c_peer.nid),
728 imp->imp_conn_cnt,
729 imp->imp_generation,
730 atomic_read(&imp->imp_inval_count));
731 spin_unlock(&imp->imp_lock);
732
733 if (obd->obd_svc_stats == NULL)
734 goto out_climp;
735
736 header = &obd->obd_svc_stats->ls_cnt_header[PTLRPC_REQWAIT_CNTR];
737 lprocfs_stats_collect(obd->obd_svc_stats, PTLRPC_REQWAIT_CNTR, &ret);
738 if (ret.lc_count != 0) {
739 /* first argument to do_div MUST be __u64 */
740 __u64 sum = ret.lc_sum;
741 do_div(sum, ret.lc_count);
742 ret.lc_sum = sum;
743 } else
744 ret.lc_sum = 0;
745 seq_printf(m,
746 " rpcs:\n"
747 " inflight: %u\n"
748 " unregistering: %u\n"
749 " timeouts: %u\n"
750 " avg_waittime: %llu %s\n",
751 atomic_read(&imp->imp_inflight),
752 atomic_read(&imp->imp_unregistering),
753 atomic_read(&imp->imp_timeouts),
754 ret.lc_sum, header->lc_units);
755
756 k = 0;
757 for (j = 0; j < IMP_AT_MAX_PORTALS; j++) {
758 if (imp->imp_at.iat_portal[j] == 0)
759 break;
760 k = max_t(unsigned int, k,
761 at_get(&imp->imp_at.iat_service_estimate[j]));
762 }
763 seq_printf(m,
764 " service_estimates:\n"
765 " services: %u sec\n"
766 " network: %u sec\n",
767 k,
768 at_get(&imp->imp_at.iat_net_latency));
769
770 seq_printf(m,
771 " transactions:\n"
772 " last_replay: %llu\n"
773 " peer_committed: %llu\n"
774 " last_checked: %llu\n",
775 imp->imp_last_replay_transno,
776 imp->imp_peer_committed_transno,
777 imp->imp_last_transno_checked);
778
779 /* avg data rates */
780 for (rw = 0; rw <= 1; rw++) {
781 lprocfs_stats_collect(obd->obd_svc_stats,
782 PTLRPC_LAST_CNTR + BRW_READ_BYTES + rw,
783 &ret);
784 if (ret.lc_sum > 0 && ret.lc_count > 0) {
785 /* first argument to do_div MUST be __u64 */
786 __u64 sum = ret.lc_sum;
787 do_div(sum, ret.lc_count);
788 ret.lc_sum = sum;
789 seq_printf(m,
790 " %s_data_averages:\n"
791 " bytes_per_rpc: %llu\n",
792 rw ? "write" : "read",
793 ret.lc_sum);
794 }
795 k = (int)ret.lc_sum;
796 j = opcode_offset(OST_READ + rw) + EXTRA_MAX_OPCODES;
797 header = &obd->obd_svc_stats->ls_cnt_header[j];
798 lprocfs_stats_collect(obd->obd_svc_stats, j, &ret);
799 if (ret.lc_sum > 0 && ret.lc_count != 0) {
800 /* first argument to do_div MUST be __u64 */
801 __u64 sum = ret.lc_sum;
802 do_div(sum, ret.lc_count);
803 ret.lc_sum = sum;
804 seq_printf(m,
805 " %s_per_rpc: %llu\n",
806 header->lc_units, ret.lc_sum);
807 j = (int)ret.lc_sum;
808 if (j > 0)
809 seq_printf(m,
810 " MB_per_sec: %u.%.02u\n",
811 k / j, (100 * k / j) % 100);
812 }
813 }
814
815 out_climp:
816 LPROCFS_CLIMP_EXIT(obd);
817 return 0;
818 }
819 EXPORT_SYMBOL(lprocfs_rd_import);
820
821 int lprocfs_rd_state(struct seq_file *m, void *data)
822 {
823 struct obd_device *obd = (struct obd_device *)data;
824 struct obd_import *imp;
825 int j, k;
826
827 LASSERT(obd != NULL);
828 LPROCFS_CLIMP_CHECK(obd);
829 imp = obd->u.cli.cl_import;
830
831 seq_printf(m, "current_state: %s\n",
832 ptlrpc_import_state_name(imp->imp_state));
833 seq_printf(m, "state_history:\n");
834 k = imp->imp_state_hist_idx;
835 for (j = 0; j < IMP_STATE_HIST_LEN; j++) {
836 struct import_state_hist *ish =
837 &imp->imp_state_hist[(k + j) % IMP_STATE_HIST_LEN];
838 if (ish->ish_state == 0)
839 continue;
840 seq_printf(m, " - ["CFS_TIME_T", %s]\n",
841 ish->ish_time,
842 ptlrpc_import_state_name(ish->ish_state));
843 }
844
845 LPROCFS_CLIMP_EXIT(obd);
846 return 0;
847 }
848 EXPORT_SYMBOL(lprocfs_rd_state);
849
850 int lprocfs_at_hist_helper(struct seq_file *m, struct adaptive_timeout *at)
851 {
852 int i;
853 for (i = 0; i < AT_BINS; i++)
854 seq_printf(m, "%3u ", at->at_hist[i]);
855 seq_printf(m, "\n");
856 return 0;
857 }
858 EXPORT_SYMBOL(lprocfs_at_hist_helper);
859
860 /* See also ptlrpc_lprocfs_rd_timeouts */
861 int lprocfs_rd_timeouts(struct seq_file *m, void *data)
862 {
863 struct obd_device *obd = (struct obd_device *)data;
864 struct obd_import *imp;
865 unsigned int cur, worst;
866 time_t now, worstt;
867 struct dhms ts;
868 int i;
869
870 LASSERT(obd != NULL);
871 LPROCFS_CLIMP_CHECK(obd);
872 imp = obd->u.cli.cl_import;
873
874 now = get_seconds();
875
876 /* Some network health info for kicks */
877 s2dhms(&ts, now - imp->imp_last_reply_time);
878 seq_printf(m, "%-10s : %ld, "DHMS_FMT" ago\n",
879 "last reply", imp->imp_last_reply_time, DHMS_VARS(&ts));
880
881 cur = at_get(&imp->imp_at.iat_net_latency);
882 worst = imp->imp_at.iat_net_latency.at_worst_ever;
883 worstt = imp->imp_at.iat_net_latency.at_worst_time;
884 s2dhms(&ts, now - worstt);
885 seq_printf(m, "%-10s : cur %3u worst %3u (at %ld, "DHMS_FMT" ago) ",
886 "network", cur, worst, worstt, DHMS_VARS(&ts));
887 lprocfs_at_hist_helper(m, &imp->imp_at.iat_net_latency);
888
889 for (i = 0; i < IMP_AT_MAX_PORTALS; i++) {
890 if (imp->imp_at.iat_portal[i] == 0)
891 break;
892 cur = at_get(&imp->imp_at.iat_service_estimate[i]);
893 worst = imp->imp_at.iat_service_estimate[i].at_worst_ever;
894 worstt = imp->imp_at.iat_service_estimate[i].at_worst_time;
895 s2dhms(&ts, now - worstt);
896 seq_printf(m, "portal %-2d : cur %3u worst %3u (at %ld, "
897 DHMS_FMT" ago) ", imp->imp_at.iat_portal[i],
898 cur, worst, worstt, DHMS_VARS(&ts));
899 lprocfs_at_hist_helper(m, &imp->imp_at.iat_service_estimate[i]);
900 }
901
902 LPROCFS_CLIMP_EXIT(obd);
903 return 0;
904 }
905 EXPORT_SYMBOL(lprocfs_rd_timeouts);
906
907 int lprocfs_rd_connect_flags(struct seq_file *m, void *data)
908 {
909 struct obd_device *obd = data;
910 __u64 flags;
911
912 LPROCFS_CLIMP_CHECK(obd);
913 flags = obd->u.cli.cl_import->imp_connect_data.ocd_connect_flags;
914 seq_printf(m, "flags=%#llx\n", flags);
915 obd_connect_seq_flags2str(m, flags, "\n");
916 seq_printf(m, "\n");
917 LPROCFS_CLIMP_EXIT(obd);
918 return 0;
919 }
920 EXPORT_SYMBOL(lprocfs_rd_connect_flags);
921
922 int lprocfs_rd_num_exports(struct seq_file *m, void *data)
923 {
924 struct obd_device *obd = data;
925
926 LASSERT(obd != NULL);
927 return seq_printf(m, "%u\n", obd->obd_num_exports);
928 }
929 EXPORT_SYMBOL(lprocfs_rd_num_exports);
930
931 int lprocfs_rd_numrefs(struct seq_file *m, void *data)
932 {
933 struct obd_type *class = (struct obd_type *) data;
934
935 LASSERT(class != NULL);
936 return seq_printf(m, "%d\n", class->typ_refcnt);
937 }
938 EXPORT_SYMBOL(lprocfs_rd_numrefs);
939
940 int lprocfs_obd_setup(struct obd_device *obd, struct lprocfs_vars *list)
941 {
942 int rc = 0;
943
944 LASSERT(obd != NULL);
945 LASSERT(obd->obd_magic == OBD_DEVICE_MAGIC);
946 LASSERT(obd->obd_type->typ_procroot != NULL);
947
948 obd->obd_proc_entry = lprocfs_register(obd->obd_name,
949 obd->obd_type->typ_procroot,
950 list, obd);
951 if (IS_ERR(obd->obd_proc_entry)) {
952 rc = PTR_ERR(obd->obd_proc_entry);
953 CERROR("error %d setting up lprocfs for %s\n",
954 rc, obd->obd_name);
955 obd->obd_proc_entry = NULL;
956 }
957 return rc;
958 }
959 EXPORT_SYMBOL(lprocfs_obd_setup);
960
961 int lprocfs_obd_cleanup(struct obd_device *obd)
962 {
963 if (!obd)
964 return -EINVAL;
965 if (obd->obd_proc_exports_entry) {
966 /* Should be no exports left */
967 lprocfs_remove(&obd->obd_proc_exports_entry);
968 obd->obd_proc_exports_entry = NULL;
969 }
970 if (obd->obd_proc_entry) {
971 lprocfs_remove(&obd->obd_proc_entry);
972 obd->obd_proc_entry = NULL;
973 }
974 return 0;
975 }
976 EXPORT_SYMBOL(lprocfs_obd_cleanup);
977
978 static void lprocfs_free_client_stats(struct nid_stat *client_stat)
979 {
980 CDEBUG(D_CONFIG, "stat %p - data %p/%p\n", client_stat,
981 client_stat->nid_proc, client_stat->nid_stats);
982
983 LASSERTF(atomic_read(&client_stat->nid_exp_ref_count) == 0,
984 "nid %s:count %d\n", libcfs_nid2str(client_stat->nid),
985 atomic_read(&client_stat->nid_exp_ref_count));
986
987 if (client_stat->nid_proc)
988 lprocfs_remove(&client_stat->nid_proc);
989
990 if (client_stat->nid_stats)
991 lprocfs_free_stats(&client_stat->nid_stats);
992
993 if (client_stat->nid_ldlm_stats)
994 lprocfs_free_stats(&client_stat->nid_ldlm_stats);
995
996 OBD_FREE_PTR(client_stat);
997 return;
998
999 }
1000
1001 void lprocfs_free_per_client_stats(struct obd_device *obd)
1002 {
1003 struct cfs_hash *hash = obd->obd_nid_stats_hash;
1004 struct nid_stat *stat;
1005
1006 /* we need extra list - because hash_exit called to early */
1007 /* not need locking because all clients is died */
1008 while (!list_empty(&obd->obd_nid_stats)) {
1009 stat = list_entry(obd->obd_nid_stats.next,
1010 struct nid_stat, nid_list);
1011 list_del_init(&stat->nid_list);
1012 cfs_hash_del(hash, &stat->nid, &stat->nid_hash);
1013 lprocfs_free_client_stats(stat);
1014 }
1015 }
1016 EXPORT_SYMBOL(lprocfs_free_per_client_stats);
1017
1018 int lprocfs_stats_alloc_one(struct lprocfs_stats *stats, unsigned int cpuid)
1019 {
1020 struct lprocfs_counter *cntr;
1021 unsigned int percpusize;
1022 int rc = -ENOMEM;
1023 unsigned long flags = 0;
1024 int i;
1025
1026 LASSERT(stats->ls_percpu[cpuid] == NULL);
1027 LASSERT((stats->ls_flags & LPROCFS_STATS_FLAG_NOPERCPU) == 0);
1028
1029 percpusize = lprocfs_stats_counter_size(stats);
1030 LIBCFS_ALLOC_ATOMIC(stats->ls_percpu[cpuid], percpusize);
1031 if (stats->ls_percpu[cpuid] != NULL) {
1032 rc = 0;
1033 if (unlikely(stats->ls_biggest_alloc_num <= cpuid)) {
1034 if (stats->ls_flags & LPROCFS_STATS_FLAG_IRQ_SAFE)
1035 spin_lock_irqsave(&stats->ls_lock, flags);
1036 else
1037 spin_lock(&stats->ls_lock);
1038 if (stats->ls_biggest_alloc_num <= cpuid)
1039 stats->ls_biggest_alloc_num = cpuid + 1;
1040 if (stats->ls_flags & LPROCFS_STATS_FLAG_IRQ_SAFE)
1041 spin_unlock_irqrestore(&stats->ls_lock, flags);
1042 else
1043 spin_unlock(&stats->ls_lock);
1044 }
1045 /* initialize the ls_percpu[cpuid] non-zero counter */
1046 for (i = 0; i < stats->ls_num; ++i) {
1047 cntr = lprocfs_stats_counter_get(stats, cpuid, i);
1048 cntr->lc_min = LC_MIN_INIT;
1049 }
1050 }
1051 return rc;
1052 }
1053 EXPORT_SYMBOL(lprocfs_stats_alloc_one);
1054
1055 struct lprocfs_stats *lprocfs_alloc_stats(unsigned int num,
1056 enum lprocfs_stats_flags flags)
1057 {
1058 struct lprocfs_stats *stats;
1059 unsigned int num_entry;
1060 unsigned int percpusize = 0;
1061 int i;
1062
1063 if (num == 0)
1064 return NULL;
1065
1066 if (lprocfs_no_percpu_stats != 0)
1067 flags |= LPROCFS_STATS_FLAG_NOPERCPU;
1068
1069 if (flags & LPROCFS_STATS_FLAG_NOPERCPU)
1070 num_entry = 1;
1071 else
1072 num_entry = num_possible_cpus();
1073
1074 /* alloc percpu pointers for all possible cpu slots */
1075 LIBCFS_ALLOC(stats, offsetof(typeof(*stats), ls_percpu[num_entry]));
1076 if (stats == NULL)
1077 return NULL;
1078
1079 stats->ls_num = num;
1080 stats->ls_flags = flags;
1081 spin_lock_init(&stats->ls_lock);
1082
1083 /* alloc num of counter headers */
1084 LIBCFS_ALLOC(stats->ls_cnt_header,
1085 stats->ls_num * sizeof(struct lprocfs_counter_header));
1086 if (stats->ls_cnt_header == NULL)
1087 goto fail;
1088
1089 if ((flags & LPROCFS_STATS_FLAG_NOPERCPU) != 0) {
1090 /* contains only one set counters */
1091 percpusize = lprocfs_stats_counter_size(stats);
1092 LIBCFS_ALLOC_ATOMIC(stats->ls_percpu[0], percpusize);
1093 if (stats->ls_percpu[0] == NULL)
1094 goto fail;
1095 stats->ls_biggest_alloc_num = 1;
1096 } else if ((flags & LPROCFS_STATS_FLAG_IRQ_SAFE) != 0) {
1097 /* alloc all percpu data, currently only obd_memory use this */
1098 for (i = 0; i < num_entry; ++i)
1099 if (lprocfs_stats_alloc_one(stats, i) < 0)
1100 goto fail;
1101 }
1102
1103 return stats;
1104
1105 fail:
1106 lprocfs_free_stats(&stats);
1107 return NULL;
1108 }
1109 EXPORT_SYMBOL(lprocfs_alloc_stats);
1110
1111 void lprocfs_free_stats(struct lprocfs_stats **statsh)
1112 {
1113 struct lprocfs_stats *stats = *statsh;
1114 unsigned int num_entry;
1115 unsigned int percpusize;
1116 unsigned int i;
1117
1118 if (stats == NULL || stats->ls_num == 0)
1119 return;
1120 *statsh = NULL;
1121
1122 if (stats->ls_flags & LPROCFS_STATS_FLAG_NOPERCPU)
1123 num_entry = 1;
1124 else
1125 num_entry = num_possible_cpus();
1126
1127 percpusize = lprocfs_stats_counter_size(stats);
1128 for (i = 0; i < num_entry; i++)
1129 if (stats->ls_percpu[i] != NULL)
1130 LIBCFS_FREE(stats->ls_percpu[i], percpusize);
1131 if (stats->ls_cnt_header != NULL)
1132 LIBCFS_FREE(stats->ls_cnt_header, stats->ls_num *
1133 sizeof(struct lprocfs_counter_header));
1134 LIBCFS_FREE(stats, offsetof(typeof(*stats), ls_percpu[num_entry]));
1135 }
1136 EXPORT_SYMBOL(lprocfs_free_stats);
1137
1138 void lprocfs_clear_stats(struct lprocfs_stats *stats)
1139 {
1140 struct lprocfs_counter *percpu_cntr;
1141 int i;
1142 int j;
1143 unsigned int num_entry;
1144 unsigned long flags = 0;
1145
1146 num_entry = lprocfs_stats_lock(stats, LPROCFS_GET_NUM_CPU, &flags);
1147
1148 for (i = 0; i < num_entry; i++) {
1149 if (stats->ls_percpu[i] == NULL)
1150 continue;
1151 for (j = 0; j < stats->ls_num; j++) {
1152 percpu_cntr = lprocfs_stats_counter_get(stats, i, j);
1153 percpu_cntr->lc_count = 0;
1154 percpu_cntr->lc_min = LC_MIN_INIT;
1155 percpu_cntr->lc_max = 0;
1156 percpu_cntr->lc_sumsquare = 0;
1157 percpu_cntr->lc_sum = 0;
1158 if (stats->ls_flags & LPROCFS_STATS_FLAG_IRQ_SAFE)
1159 percpu_cntr->lc_sum_irq = 0;
1160 }
1161 }
1162
1163 lprocfs_stats_unlock(stats, LPROCFS_GET_NUM_CPU, &flags);
1164 }
1165 EXPORT_SYMBOL(lprocfs_clear_stats);
1166
1167 static ssize_t lprocfs_stats_seq_write(struct file *file,
1168 const char __user *buf,
1169 size_t len, loff_t *off)
1170 {
1171 struct seq_file *seq = file->private_data;
1172 struct lprocfs_stats *stats = seq->private;
1173
1174 lprocfs_clear_stats(stats);
1175
1176 return len;
1177 }
1178
1179 static void *lprocfs_stats_seq_start(struct seq_file *p, loff_t *pos)
1180 {
1181 struct lprocfs_stats *stats = p->private;
1182
1183 return (*pos < stats->ls_num) ? pos : NULL;
1184 }
1185
1186 static void lprocfs_stats_seq_stop(struct seq_file *p, void *v)
1187 {
1188 }
1189
1190 static void *lprocfs_stats_seq_next(struct seq_file *p, void *v, loff_t *pos)
1191 {
1192 (*pos)++;
1193 return lprocfs_stats_seq_start(p, pos);
1194 }
1195
1196 /* seq file export of one lprocfs counter */
1197 static int lprocfs_stats_seq_show(struct seq_file *p, void *v)
1198 {
1199 struct lprocfs_stats *stats = p->private;
1200 struct lprocfs_counter_header *hdr;
1201 struct lprocfs_counter ctr;
1202 int idx = *(loff_t *)v;
1203 int rc = 0;
1204
1205 if (idx == 0) {
1206 struct timeval now;
1207 do_gettimeofday(&now);
1208 rc = seq_printf(p, "%-25s %lu.%lu secs.usecs\n",
1209 "snapshot_time", now.tv_sec, (unsigned long)now.tv_usec);
1210 if (rc < 0)
1211 return rc;
1212 }
1213 hdr = &stats->ls_cnt_header[idx];
1214 lprocfs_stats_collect(stats, idx, &ctr);
1215
1216 if (ctr.lc_count == 0)
1217 goto out;
1218
1219 rc = seq_printf(p, "%-25s %lld samples [%s]", hdr->lc_name,
1220 ctr.lc_count, hdr->lc_units);
1221
1222 if (rc < 0)
1223 goto out;
1224
1225 if ((hdr->lc_config & LPROCFS_CNTR_AVGMINMAX) && (ctr.lc_count > 0)) {
1226 rc = seq_printf(p, " %lld %lld %lld",
1227 ctr.lc_min, ctr.lc_max, ctr.lc_sum);
1228 if (rc < 0)
1229 goto out;
1230 if (hdr->lc_config & LPROCFS_CNTR_STDDEV)
1231 rc = seq_printf(p, " %lld", ctr.lc_sumsquare);
1232 if (rc < 0)
1233 goto out;
1234 }
1235 rc = seq_printf(p, "\n");
1236 out:
1237 return (rc < 0) ? rc : 0;
1238 }
1239
1240 static const struct seq_operations lprocfs_stats_seq_sops = {
1241 .start = lprocfs_stats_seq_start,
1242 .stop = lprocfs_stats_seq_stop,
1243 .next = lprocfs_stats_seq_next,
1244 .show = lprocfs_stats_seq_show,
1245 };
1246
1247 static int lprocfs_stats_seq_open(struct inode *inode, struct file *file)
1248 {
1249 struct seq_file *seq;
1250 int rc;
1251
1252 rc = seq_open(file, &lprocfs_stats_seq_sops);
1253 if (rc)
1254 return rc;
1255 seq = file->private_data;
1256 seq->private = PDE_DATA(inode);
1257 return 0;
1258 }
1259
1260 struct file_operations lprocfs_stats_seq_fops = {
1261 .owner = THIS_MODULE,
1262 .open = lprocfs_stats_seq_open,
1263 .read = seq_read,
1264 .write = lprocfs_stats_seq_write,
1265 .llseek = seq_lseek,
1266 .release = lprocfs_seq_release,
1267 };
1268
1269 int lprocfs_register_stats(struct proc_dir_entry *root, const char *name,
1270 struct lprocfs_stats *stats)
1271 {
1272 struct proc_dir_entry *entry;
1273 LASSERT(root != NULL);
1274
1275 entry = proc_create_data(name, 0644, root,
1276 &lprocfs_stats_seq_fops, stats);
1277 if (entry == NULL)
1278 return -ENOMEM;
1279
1280 return 0;
1281 }
1282 EXPORT_SYMBOL(lprocfs_register_stats);
1283
1284 void lprocfs_counter_init(struct lprocfs_stats *stats, int index,
1285 unsigned conf, const char *name, const char *units)
1286 {
1287 struct lprocfs_counter_header *header;
1288 struct lprocfs_counter *percpu_cntr;
1289 unsigned long flags = 0;
1290 unsigned int i;
1291 unsigned int num_cpu;
1292
1293 LASSERT(stats != NULL);
1294
1295 header = &stats->ls_cnt_header[index];
1296 LASSERTF(header != NULL, "Failed to allocate stats header:[%d]%s/%s\n",
1297 index, name, units);
1298
1299 header->lc_config = conf;
1300 header->lc_name = name;
1301 header->lc_units = units;
1302
1303 num_cpu = lprocfs_stats_lock(stats, LPROCFS_GET_NUM_CPU, &flags);
1304 for (i = 0; i < num_cpu; ++i) {
1305 if (stats->ls_percpu[i] == NULL)
1306 continue;
1307 percpu_cntr = lprocfs_stats_counter_get(stats, i, index);
1308 percpu_cntr->lc_count = 0;
1309 percpu_cntr->lc_min = LC_MIN_INIT;
1310 percpu_cntr->lc_max = 0;
1311 percpu_cntr->lc_sumsquare = 0;
1312 percpu_cntr->lc_sum = 0;
1313 if ((stats->ls_flags & LPROCFS_STATS_FLAG_IRQ_SAFE) != 0)
1314 percpu_cntr->lc_sum_irq = 0;
1315 }
1316 lprocfs_stats_unlock(stats, LPROCFS_GET_NUM_CPU, &flags);
1317 }
1318 EXPORT_SYMBOL(lprocfs_counter_init);
1319
1320 #define LPROCFS_OBD_OP_INIT(base, stats, op) \
1321 do { \
1322 unsigned int coffset = base + OBD_COUNTER_OFFSET(op); \
1323 LASSERT(coffset < stats->ls_num); \
1324 lprocfs_counter_init(stats, coffset, 0, #op, "reqs"); \
1325 } while (0)
1326
1327 void lprocfs_init_ops_stats(int num_private_stats, struct lprocfs_stats *stats)
1328 {
1329 LPROCFS_OBD_OP_INIT(num_private_stats, stats, iocontrol);
1330 LPROCFS_OBD_OP_INIT(num_private_stats, stats, get_info);
1331 LPROCFS_OBD_OP_INIT(num_private_stats, stats, set_info_async);
1332 LPROCFS_OBD_OP_INIT(num_private_stats, stats, attach);
1333 LPROCFS_OBD_OP_INIT(num_private_stats, stats, detach);
1334 LPROCFS_OBD_OP_INIT(num_private_stats, stats, setup);
1335 LPROCFS_OBD_OP_INIT(num_private_stats, stats, precleanup);
1336 LPROCFS_OBD_OP_INIT(num_private_stats, stats, cleanup);
1337 LPROCFS_OBD_OP_INIT(num_private_stats, stats, process_config);
1338 LPROCFS_OBD_OP_INIT(num_private_stats, stats, postrecov);
1339 LPROCFS_OBD_OP_INIT(num_private_stats, stats, add_conn);
1340 LPROCFS_OBD_OP_INIT(num_private_stats, stats, del_conn);
1341 LPROCFS_OBD_OP_INIT(num_private_stats, stats, connect);
1342 LPROCFS_OBD_OP_INIT(num_private_stats, stats, reconnect);
1343 LPROCFS_OBD_OP_INIT(num_private_stats, stats, disconnect);
1344 LPROCFS_OBD_OP_INIT(num_private_stats, stats, fid_init);
1345 LPROCFS_OBD_OP_INIT(num_private_stats, stats, fid_fini);
1346 LPROCFS_OBD_OP_INIT(num_private_stats, stats, fid_alloc);
1347 LPROCFS_OBD_OP_INIT(num_private_stats, stats, statfs);
1348 LPROCFS_OBD_OP_INIT(num_private_stats, stats, statfs_async);
1349 LPROCFS_OBD_OP_INIT(num_private_stats, stats, packmd);
1350 LPROCFS_OBD_OP_INIT(num_private_stats, stats, unpackmd);
1351 LPROCFS_OBD_OP_INIT(num_private_stats, stats, preallocate);
1352 LPROCFS_OBD_OP_INIT(num_private_stats, stats, create);
1353 LPROCFS_OBD_OP_INIT(num_private_stats, stats, destroy);
1354 LPROCFS_OBD_OP_INIT(num_private_stats, stats, setattr);
1355 LPROCFS_OBD_OP_INIT(num_private_stats, stats, setattr_async);
1356 LPROCFS_OBD_OP_INIT(num_private_stats, stats, getattr);
1357 LPROCFS_OBD_OP_INIT(num_private_stats, stats, getattr_async);
1358 LPROCFS_OBD_OP_INIT(num_private_stats, stats, adjust_kms);
1359 LPROCFS_OBD_OP_INIT(num_private_stats, stats, preprw);
1360 LPROCFS_OBD_OP_INIT(num_private_stats, stats, commitrw);
1361 LPROCFS_OBD_OP_INIT(num_private_stats, stats, find_cbdata);
1362 LPROCFS_OBD_OP_INIT(num_private_stats, stats, init_export);
1363 LPROCFS_OBD_OP_INIT(num_private_stats, stats, destroy_export);
1364 LPROCFS_OBD_OP_INIT(num_private_stats, stats, import_event);
1365 LPROCFS_OBD_OP_INIT(num_private_stats, stats, notify);
1366 LPROCFS_OBD_OP_INIT(num_private_stats, stats, health_check);
1367 LPROCFS_OBD_OP_INIT(num_private_stats, stats, get_uuid);
1368 LPROCFS_OBD_OP_INIT(num_private_stats, stats, quotacheck);
1369 LPROCFS_OBD_OP_INIT(num_private_stats, stats, quotactl);
1370 LPROCFS_OBD_OP_INIT(num_private_stats, stats, pool_new);
1371 LPROCFS_OBD_OP_INIT(num_private_stats, stats, pool_rem);
1372 LPROCFS_OBD_OP_INIT(num_private_stats, stats, pool_add);
1373 LPROCFS_OBD_OP_INIT(num_private_stats, stats, pool_del);
1374 LPROCFS_OBD_OP_INIT(num_private_stats, stats, getref);
1375 LPROCFS_OBD_OP_INIT(num_private_stats, stats, putref);
1376 }
1377 EXPORT_SYMBOL(lprocfs_init_ops_stats);
1378
1379 int lprocfs_alloc_obd_stats(struct obd_device *obd, unsigned num_private_stats)
1380 {
1381 struct lprocfs_stats *stats;
1382 unsigned int num_stats;
1383 int rc, i;
1384
1385 LASSERT(obd->obd_stats == NULL);
1386 LASSERT(obd->obd_proc_entry != NULL);
1387 LASSERT(obd->obd_cntr_base == 0);
1388
1389 num_stats = ((int)sizeof(*obd->obd_type->typ_dt_ops) / sizeof(void *)) +
1390 num_private_stats - 1 /* o_owner */;
1391 stats = lprocfs_alloc_stats(num_stats, 0);
1392 if (stats == NULL)
1393 return -ENOMEM;
1394
1395 lprocfs_init_ops_stats(num_private_stats, stats);
1396
1397 for (i = num_private_stats; i < num_stats; i++) {
1398 /* If this LBUGs, it is likely that an obd
1399 * operation was added to struct obd_ops in
1400 * <obd.h>, and that the corresponding line item
1401 * LPROCFS_OBD_OP_INIT(.., .., opname)
1402 * is missing from the list above. */
1403 LASSERTF(stats->ls_cnt_header[i].lc_name != NULL,
1404 "Missing obd_stat initializer obd_op operation at offset %d.\n",
1405 i - num_private_stats);
1406 }
1407 rc = lprocfs_register_stats(obd->obd_proc_entry, "stats", stats);
1408 if (rc < 0) {
1409 lprocfs_free_stats(&stats);
1410 } else {
1411 obd->obd_stats = stats;
1412 obd->obd_cntr_base = num_private_stats;
1413 }
1414 return rc;
1415 }
1416 EXPORT_SYMBOL(lprocfs_alloc_obd_stats);
1417
1418 void lprocfs_free_obd_stats(struct obd_device *obd)
1419 {
1420 if (obd->obd_stats)
1421 lprocfs_free_stats(&obd->obd_stats);
1422 }
1423 EXPORT_SYMBOL(lprocfs_free_obd_stats);
1424
1425 #define LPROCFS_MD_OP_INIT(base, stats, op) \
1426 do { \
1427 unsigned int coffset = base + MD_COUNTER_OFFSET(op); \
1428 LASSERT(coffset < stats->ls_num); \
1429 lprocfs_counter_init(stats, coffset, 0, #op, "reqs"); \
1430 } while (0)
1431
1432 void lprocfs_init_mps_stats(int num_private_stats, struct lprocfs_stats *stats)
1433 {
1434 LPROCFS_MD_OP_INIT(num_private_stats, stats, getstatus);
1435 LPROCFS_MD_OP_INIT(num_private_stats, stats, null_inode);
1436 LPROCFS_MD_OP_INIT(num_private_stats, stats, find_cbdata);
1437 LPROCFS_MD_OP_INIT(num_private_stats, stats, close);
1438 LPROCFS_MD_OP_INIT(num_private_stats, stats, create);
1439 LPROCFS_MD_OP_INIT(num_private_stats, stats, done_writing);
1440 LPROCFS_MD_OP_INIT(num_private_stats, stats, enqueue);
1441 LPROCFS_MD_OP_INIT(num_private_stats, stats, getattr);
1442 LPROCFS_MD_OP_INIT(num_private_stats, stats, getattr_name);
1443 LPROCFS_MD_OP_INIT(num_private_stats, stats, intent_lock);
1444 LPROCFS_MD_OP_INIT(num_private_stats, stats, link);
1445 LPROCFS_MD_OP_INIT(num_private_stats, stats, rename);
1446 LPROCFS_MD_OP_INIT(num_private_stats, stats, is_subdir);
1447 LPROCFS_MD_OP_INIT(num_private_stats, stats, setattr);
1448 LPROCFS_MD_OP_INIT(num_private_stats, stats, sync);
1449 LPROCFS_MD_OP_INIT(num_private_stats, stats, readpage);
1450 LPROCFS_MD_OP_INIT(num_private_stats, stats, unlink);
1451 LPROCFS_MD_OP_INIT(num_private_stats, stats, setxattr);
1452 LPROCFS_MD_OP_INIT(num_private_stats, stats, getxattr);
1453 LPROCFS_MD_OP_INIT(num_private_stats, stats, init_ea_size);
1454 LPROCFS_MD_OP_INIT(num_private_stats, stats, get_lustre_md);
1455 LPROCFS_MD_OP_INIT(num_private_stats, stats, free_lustre_md);
1456 LPROCFS_MD_OP_INIT(num_private_stats, stats, set_open_replay_data);
1457 LPROCFS_MD_OP_INIT(num_private_stats, stats, clear_open_replay_data);
1458 LPROCFS_MD_OP_INIT(num_private_stats, stats, set_lock_data);
1459 LPROCFS_MD_OP_INIT(num_private_stats, stats, lock_match);
1460 LPROCFS_MD_OP_INIT(num_private_stats, stats, cancel_unused);
1461 LPROCFS_MD_OP_INIT(num_private_stats, stats, renew_capa);
1462 LPROCFS_MD_OP_INIT(num_private_stats, stats, unpack_capa);
1463 LPROCFS_MD_OP_INIT(num_private_stats, stats, get_remote_perm);
1464 LPROCFS_MD_OP_INIT(num_private_stats, stats, intent_getattr_async);
1465 LPROCFS_MD_OP_INIT(num_private_stats, stats, revalidate_lock);
1466 }
1467 EXPORT_SYMBOL(lprocfs_init_mps_stats);
1468
1469 int lprocfs_alloc_md_stats(struct obd_device *obd,
1470 unsigned num_private_stats)
1471 {
1472 struct lprocfs_stats *stats;
1473 unsigned int num_stats;
1474 int rc, i;
1475
1476 LASSERT(obd->md_stats == NULL);
1477 LASSERT(obd->obd_proc_entry != NULL);
1478 LASSERT(obd->md_cntr_base == 0);
1479
1480 num_stats = 1 + MD_COUNTER_OFFSET(revalidate_lock) +
1481 num_private_stats;
1482 stats = lprocfs_alloc_stats(num_stats, 0);
1483 if (stats == NULL)
1484 return -ENOMEM;
1485
1486 lprocfs_init_mps_stats(num_private_stats, stats);
1487
1488 for (i = num_private_stats; i < num_stats; i++) {
1489 if (stats->ls_cnt_header[i].lc_name == NULL) {
1490 CERROR("Missing md_stat initializer md_op operation at offset %d. Aborting.\n",
1491 i - num_private_stats);
1492 LBUG();
1493 }
1494 }
1495 rc = lprocfs_register_stats(obd->obd_proc_entry, "md_stats", stats);
1496 if (rc < 0) {
1497 lprocfs_free_stats(&stats);
1498 } else {
1499 obd->md_stats = stats;
1500 obd->md_cntr_base = num_private_stats;
1501 }
1502 return rc;
1503 }
1504 EXPORT_SYMBOL(lprocfs_alloc_md_stats);
1505
1506 void lprocfs_free_md_stats(struct obd_device *obd)
1507 {
1508 struct lprocfs_stats *stats = obd->md_stats;
1509
1510 if (stats != NULL) {
1511 obd->md_stats = NULL;
1512 obd->md_cntr_base = 0;
1513 lprocfs_free_stats(&stats);
1514 }
1515 }
1516 EXPORT_SYMBOL(lprocfs_free_md_stats);
1517
1518 void lprocfs_init_ldlm_stats(struct lprocfs_stats *ldlm_stats)
1519 {
1520 lprocfs_counter_init(ldlm_stats,
1521 LDLM_ENQUEUE - LDLM_FIRST_OPC,
1522 0, "ldlm_enqueue", "reqs");
1523 lprocfs_counter_init(ldlm_stats,
1524 LDLM_CONVERT - LDLM_FIRST_OPC,
1525 0, "ldlm_convert", "reqs");
1526 lprocfs_counter_init(ldlm_stats,
1527 LDLM_CANCEL - LDLM_FIRST_OPC,
1528 0, "ldlm_cancel", "reqs");
1529 lprocfs_counter_init(ldlm_stats,
1530 LDLM_BL_CALLBACK - LDLM_FIRST_OPC,
1531 0, "ldlm_bl_callback", "reqs");
1532 lprocfs_counter_init(ldlm_stats,
1533 LDLM_CP_CALLBACK - LDLM_FIRST_OPC,
1534 0, "ldlm_cp_callback", "reqs");
1535 lprocfs_counter_init(ldlm_stats,
1536 LDLM_GL_CALLBACK - LDLM_FIRST_OPC,
1537 0, "ldlm_gl_callback", "reqs");
1538 }
1539 EXPORT_SYMBOL(lprocfs_init_ldlm_stats);
1540
1541 int lprocfs_exp_print_uuid(struct cfs_hash *hs, struct cfs_hash_bd *bd,
1542 struct hlist_node *hnode, void *data)
1543
1544 {
1545 struct obd_export *exp = cfs_hash_object(hs, hnode);
1546 struct seq_file *m = (struct seq_file *)data;
1547
1548 if (exp->exp_nid_stats)
1549 seq_printf(m, "%s\n", obd_uuid2str(&exp->exp_client_uuid));
1550
1551 return 0;
1552 }
1553
1554 static int
1555 lproc_exp_uuid_seq_show(struct seq_file *m, void *unused)
1556 {
1557 struct nid_stat *stats = (struct nid_stat *)m->private;
1558 struct obd_device *obd = stats->nid_obd;
1559
1560 cfs_hash_for_each_key(obd->obd_nid_hash, &stats->nid,
1561 lprocfs_exp_print_uuid, m);
1562 return 0;
1563 }
1564
1565 LPROC_SEQ_FOPS_RO(lproc_exp_uuid);
1566
1567 struct exp_hash_cb_data {
1568 struct seq_file *m;
1569 bool first;
1570 };
1571
1572 int lprocfs_exp_print_hash(struct cfs_hash *hs, struct cfs_hash_bd *bd,
1573 struct hlist_node *hnode, void *cb_data)
1574
1575 {
1576 struct exp_hash_cb_data *data = (struct exp_hash_cb_data *)cb_data;
1577 struct obd_export *exp = cfs_hash_object(hs, hnode);
1578
1579 if (exp->exp_lock_hash != NULL) {
1580 if (data->first) {
1581 cfs_hash_debug_header(data->m);
1582 data->first = false;
1583 }
1584 cfs_hash_debug_str(hs, data->m);
1585 }
1586
1587 return 0;
1588 }
1589
1590 static int
1591 lproc_exp_hash_seq_show(struct seq_file *m, void *unused)
1592 {
1593 struct nid_stat *stats = (struct nid_stat *)m->private;
1594 struct obd_device *obd = stats->nid_obd;
1595 struct exp_hash_cb_data cb_data = {
1596 .m = m,
1597 .first = true
1598 };
1599
1600 cfs_hash_for_each_key(obd->obd_nid_hash, &stats->nid,
1601 lprocfs_exp_print_hash, &cb_data);
1602 return 0;
1603 }
1604
1605 LPROC_SEQ_FOPS_RO(lproc_exp_hash);
1606
1607 int lprocfs_nid_stats_clear_read(struct seq_file *m, void *data)
1608 {
1609 return seq_printf(m, "%s\n",
1610 "Write into this file to clear all nid stats and stale nid entries");
1611 }
1612 EXPORT_SYMBOL(lprocfs_nid_stats_clear_read);
1613
1614 static int lprocfs_nid_stats_clear_write_cb(void *obj, void *data)
1615 {
1616 struct nid_stat *stat = obj;
1617
1618 CDEBUG(D_INFO, "refcnt %d\n", atomic_read(&stat->nid_exp_ref_count));
1619 if (atomic_read(&stat->nid_exp_ref_count) == 1) {
1620 /* object has only hash references. */
1621 spin_lock(&stat->nid_obd->obd_nid_lock);
1622 list_move(&stat->nid_list, data);
1623 spin_unlock(&stat->nid_obd->obd_nid_lock);
1624 return 1;
1625 }
1626 /* we has reference to object - only clear data*/
1627 if (stat->nid_stats)
1628 lprocfs_clear_stats(stat->nid_stats);
1629
1630 return 0;
1631 }
1632
1633 int lprocfs_nid_stats_clear_write(struct file *file, const char *buffer,
1634 unsigned long count, void *data)
1635 {
1636 struct obd_device *obd = (struct obd_device *)data;
1637 struct nid_stat *client_stat;
1638 LIST_HEAD(free_list);
1639
1640 cfs_hash_cond_del(obd->obd_nid_stats_hash,
1641 lprocfs_nid_stats_clear_write_cb, &free_list);
1642
1643 while (!list_empty(&free_list)) {
1644 client_stat = list_entry(free_list.next, struct nid_stat,
1645 nid_list);
1646 list_del_init(&client_stat->nid_list);
1647 lprocfs_free_client_stats(client_stat);
1648 }
1649
1650 return count;
1651 }
1652 EXPORT_SYMBOL(lprocfs_nid_stats_clear_write);
1653
1654 int lprocfs_exp_setup(struct obd_export *exp, lnet_nid_t *nid, int *newnid)
1655 {
1656 struct nid_stat *new_stat, *old_stat;
1657 struct obd_device *obd = NULL;
1658 struct proc_dir_entry *entry;
1659 char *buffer = NULL;
1660 int rc = 0;
1661
1662 *newnid = 0;
1663
1664 if (!exp || !exp->exp_obd || !exp->exp_obd->obd_proc_exports_entry ||
1665 !exp->exp_obd->obd_nid_stats_hash)
1666 return -EINVAL;
1667
1668 /* not test against zero because eric say:
1669 * You may only test nid against another nid, or LNET_NID_ANY.
1670 * Anything else is nonsense.*/
1671 if (!nid || *nid == LNET_NID_ANY)
1672 return 0;
1673
1674 obd = exp->exp_obd;
1675
1676 CDEBUG(D_CONFIG, "using hash %p\n", obd->obd_nid_stats_hash);
1677
1678 OBD_ALLOC_PTR(new_stat);
1679 if (new_stat == NULL)
1680 return -ENOMEM;
1681
1682 new_stat->nid = *nid;
1683 new_stat->nid_obd = exp->exp_obd;
1684 /* we need set default refcount to 1 to balance obd_disconnect */
1685 atomic_set(&new_stat->nid_exp_ref_count, 1);
1686
1687 old_stat = cfs_hash_findadd_unique(obd->obd_nid_stats_hash,
1688 nid, &new_stat->nid_hash);
1689 CDEBUG(D_INFO, "Found stats %p for nid %s - ref %d\n",
1690 old_stat, libcfs_nid2str(*nid),
1691 atomic_read(&new_stat->nid_exp_ref_count));
1692
1693 /* We need to release old stats because lprocfs_exp_cleanup() hasn't
1694 * been and will never be called. */
1695 if (exp->exp_nid_stats) {
1696 nidstat_putref(exp->exp_nid_stats);
1697 exp->exp_nid_stats = NULL;
1698 }
1699
1700 /* Return -EALREADY here so that we know that the /proc
1701 * entry already has been created */
1702 if (old_stat != new_stat) {
1703 exp->exp_nid_stats = old_stat;
1704 rc = -EALREADY;
1705 goto destroy_new;
1706 }
1707 /* not found - create */
1708 OBD_ALLOC(buffer, LNET_NIDSTR_SIZE);
1709 if (buffer == NULL) {
1710 rc = -ENOMEM;
1711 goto destroy_new;
1712 }
1713
1714 memcpy(buffer, libcfs_nid2str(*nid), LNET_NIDSTR_SIZE);
1715 new_stat->nid_proc = lprocfs_register(buffer,
1716 obd->obd_proc_exports_entry,
1717 NULL, NULL);
1718 OBD_FREE(buffer, LNET_NIDSTR_SIZE);
1719
1720 if (IS_ERR(new_stat->nid_proc)) {
1721 CERROR("Error making export directory for nid %s\n",
1722 libcfs_nid2str(*nid));
1723 rc = PTR_ERR(new_stat->nid_proc);
1724 new_stat->nid_proc = NULL;
1725 goto destroy_new_ns;
1726 }
1727
1728 entry = lprocfs_add_simple(new_stat->nid_proc, "uuid",
1729 new_stat, &lproc_exp_uuid_fops);
1730 if (IS_ERR(entry)) {
1731 CWARN("Error adding the NID stats file\n");
1732 rc = PTR_ERR(entry);
1733 goto destroy_new_ns;
1734 }
1735
1736 entry = lprocfs_add_simple(new_stat->nid_proc, "hash",
1737 new_stat, &lproc_exp_hash_fops);
1738 if (IS_ERR(entry)) {
1739 CWARN("Error adding the hash file\n");
1740 rc = PTR_ERR(entry);
1741 goto destroy_new_ns;
1742 }
1743
1744 exp->exp_nid_stats = new_stat;
1745 *newnid = 1;
1746 /* protect competitive add to list, not need locking on destroy */
1747 spin_lock(&obd->obd_nid_lock);
1748 list_add(&new_stat->nid_list, &obd->obd_nid_stats);
1749 spin_unlock(&obd->obd_nid_lock);
1750
1751 return rc;
1752
1753 destroy_new_ns:
1754 if (new_stat->nid_proc != NULL)
1755 lprocfs_remove(&new_stat->nid_proc);
1756 cfs_hash_del(obd->obd_nid_stats_hash, nid, &new_stat->nid_hash);
1757
1758 destroy_new:
1759 nidstat_putref(new_stat);
1760 OBD_FREE_PTR(new_stat);
1761 return rc;
1762 }
1763 EXPORT_SYMBOL(lprocfs_exp_setup);
1764
1765 int lprocfs_exp_cleanup(struct obd_export *exp)
1766 {
1767 struct nid_stat *stat = exp->exp_nid_stats;
1768
1769 if (!stat || !exp->exp_obd)
1770 return 0;
1771
1772 nidstat_putref(exp->exp_nid_stats);
1773 exp->exp_nid_stats = NULL;
1774
1775 return 0;
1776 }
1777 EXPORT_SYMBOL(lprocfs_exp_cleanup);
1778
1779 __s64 lprocfs_read_helper(struct lprocfs_counter *lc,
1780 struct lprocfs_counter_header *header,
1781 enum lprocfs_stats_flags flags,
1782 enum lprocfs_fields_flags field)
1783 {
1784 __s64 ret = 0;
1785
1786 if (lc == NULL || header == NULL)
1787 return 0;
1788
1789 switch (field) {
1790 case LPROCFS_FIELDS_FLAGS_CONFIG:
1791 ret = header->lc_config;
1792 break;
1793 case LPROCFS_FIELDS_FLAGS_SUM:
1794 ret = lc->lc_sum;
1795 if ((flags & LPROCFS_STATS_FLAG_IRQ_SAFE) != 0)
1796 ret += lc->lc_sum_irq;
1797 break;
1798 case LPROCFS_FIELDS_FLAGS_MIN:
1799 ret = lc->lc_min;
1800 break;
1801 case LPROCFS_FIELDS_FLAGS_MAX:
1802 ret = lc->lc_max;
1803 break;
1804 case LPROCFS_FIELDS_FLAGS_AVG:
1805 ret = (lc->lc_max - lc->lc_min) / 2;
1806 break;
1807 case LPROCFS_FIELDS_FLAGS_SUMSQUARE:
1808 ret = lc->lc_sumsquare;
1809 break;
1810 case LPROCFS_FIELDS_FLAGS_COUNT:
1811 ret = lc->lc_count;
1812 break;
1813 default:
1814 break;
1815 }
1816
1817 return 0;
1818 }
1819 EXPORT_SYMBOL(lprocfs_read_helper);
1820
1821 int lprocfs_write_helper(const char __user *buffer, unsigned long count,
1822 int *val)
1823 {
1824 return lprocfs_write_frac_helper(buffer, count, val, 1);
1825 }
1826 EXPORT_SYMBOL(lprocfs_write_helper);
1827
1828 int lprocfs_seq_read_frac_helper(struct seq_file *m, long val, int mult)
1829 {
1830 long decimal_val, frac_val;
1831
1832 decimal_val = val / mult;
1833 seq_printf(m, "%ld", decimal_val);
1834 frac_val = val % mult;
1835
1836 if (frac_val > 0) {
1837 frac_val *= 100;
1838 frac_val /= mult;
1839 }
1840 if (frac_val > 0) {
1841 /* Three cases: x0, xx, 0x */
1842 if ((frac_val % 10) != 0)
1843 seq_printf(m, ".%ld", frac_val);
1844 else
1845 seq_printf(m, ".%ld", frac_val / 10);
1846 }
1847
1848 seq_printf(m, "\n");
1849 return 0;
1850 }
1851 EXPORT_SYMBOL(lprocfs_seq_read_frac_helper);
1852
1853 int lprocfs_write_u64_helper(const char __user *buffer, unsigned long count,
1854 __u64 *val)
1855 {
1856 return lprocfs_write_frac_u64_helper(buffer, count, val, 1);
1857 }
1858 EXPORT_SYMBOL(lprocfs_write_u64_helper);
1859
1860 int lprocfs_write_frac_u64_helper(const char *buffer, unsigned long count,
1861 __u64 *val, int mult)
1862 {
1863 char kernbuf[22], *end, *pbuf;
1864 __u64 whole, frac = 0, units;
1865 unsigned frac_d = 1;
1866 int sign = 1;
1867
1868 if (count > (sizeof(kernbuf) - 1))
1869 return -EINVAL;
1870
1871 if (copy_from_user(kernbuf, buffer, count))
1872 return -EFAULT;
1873
1874 kernbuf[count] = '\0';
1875 pbuf = kernbuf;
1876 if (*pbuf == '-') {
1877 sign = -1;
1878 pbuf++;
1879 }
1880
1881 whole = simple_strtoull(pbuf, &end, 10);
1882 if (pbuf == end)
1883 return -EINVAL;
1884
1885 if (*end == '.') {
1886 int i;
1887 pbuf = end + 1;
1888
1889 /* need to limit frac_d to a __u32 */
1890 if (strlen(pbuf) > 10)
1891 pbuf[10] = '\0';
1892
1893 frac = simple_strtoull(pbuf, &end, 10);
1894 /* count decimal places */
1895 for (i = 0; i < (end - pbuf); i++)
1896 frac_d *= 10;
1897 }
1898
1899 units = 1;
1900 switch (tolower(*end)) {
1901 case 'p':
1902 units <<= 10;
1903 case 't':
1904 units <<= 10;
1905 case 'g':
1906 units <<= 10;
1907 case 'm':
1908 units <<= 10;
1909 case 'k':
1910 units <<= 10;
1911 }
1912 /* Specified units override the multiplier */
1913 if (units > 1)
1914 mult = units;
1915
1916 frac *= mult;
1917 do_div(frac, frac_d);
1918 *val = sign * (whole * mult + frac);
1919 return 0;
1920 }
1921 EXPORT_SYMBOL(lprocfs_write_frac_u64_helper);
1922
1923 static char *lprocfs_strnstr(const char *s1, const char *s2, size_t len)
1924 {
1925 size_t l2;
1926
1927 l2 = strlen(s2);
1928 if (!l2)
1929 return (char *)s1;
1930 while (len >= l2) {
1931 len--;
1932 if (!memcmp(s1, s2, l2))
1933 return (char *)s1;
1934 s1++;
1935 }
1936 return NULL;
1937 }
1938
1939 /**
1940 * Find the string \a name in the input \a buffer, and return a pointer to the
1941 * value immediately following \a name, reducing \a count appropriately.
1942 * If \a name is not found the original \a buffer is returned.
1943 */
1944 char *lprocfs_find_named_value(const char *buffer, const char *name,
1945 size_t *count)
1946 {
1947 char *val;
1948 size_t buflen = *count;
1949
1950 /* there is no strnstr() in rhel5 and ubuntu kernels */
1951 val = lprocfs_strnstr(buffer, name, buflen);
1952 if (val == NULL)
1953 return (char *)buffer;
1954
1955 val += strlen(name); /* skip prefix */
1956 while (val < buffer + buflen && isspace(*val)) /* skip separator */
1957 val++;
1958
1959 *count = 0;
1960 while (val < buffer + buflen && isalnum(*val)) {
1961 ++*count;
1962 ++val;
1963 }
1964
1965 return val - *count;
1966 }
1967 EXPORT_SYMBOL(lprocfs_find_named_value);
1968
1969 int lprocfs_seq_create(struct proc_dir_entry *parent,
1970 const char *name,
1971 umode_t mode,
1972 const struct file_operations *seq_fops,
1973 void *data)
1974 {
1975 struct proc_dir_entry *entry;
1976
1977 /* Disallow secretly (un)writable entries. */
1978 LASSERT((seq_fops->write == NULL) == ((mode & 0222) == 0));
1979 entry = proc_create_data(name, mode, parent, seq_fops, data);
1980
1981 if (entry == NULL)
1982 return -ENOMEM;
1983
1984 return 0;
1985 }
1986 EXPORT_SYMBOL(lprocfs_seq_create);
1987
1988 int lprocfs_obd_seq_create(struct obd_device *dev,
1989 const char *name,
1990 umode_t mode,
1991 const struct file_operations *seq_fops,
1992 void *data)
1993 {
1994 return lprocfs_seq_create(dev->obd_proc_entry, name,
1995 mode, seq_fops, data);
1996 }
1997 EXPORT_SYMBOL(lprocfs_obd_seq_create);
1998
1999 void lprocfs_oh_tally(struct obd_histogram *oh, unsigned int value)
2000 {
2001 if (value >= OBD_HIST_MAX)
2002 value = OBD_HIST_MAX - 1;
2003
2004 spin_lock(&oh->oh_lock);
2005 oh->oh_buckets[value]++;
2006 spin_unlock(&oh->oh_lock);
2007 }
2008 EXPORT_SYMBOL(lprocfs_oh_tally);
2009
2010 void lprocfs_oh_tally_log2(struct obd_histogram *oh, unsigned int value)
2011 {
2012 unsigned int val;
2013
2014 for (val = 0; ((1 << val) < value) && (val <= OBD_HIST_MAX); val++)
2015 ;
2016
2017 lprocfs_oh_tally(oh, val);
2018 }
2019 EXPORT_SYMBOL(lprocfs_oh_tally_log2);
2020
2021 unsigned long lprocfs_oh_sum(struct obd_histogram *oh)
2022 {
2023 unsigned long ret = 0;
2024 int i;
2025
2026 for (i = 0; i < OBD_HIST_MAX; i++)
2027 ret += oh->oh_buckets[i];
2028 return ret;
2029 }
2030 EXPORT_SYMBOL(lprocfs_oh_sum);
2031
2032 void lprocfs_oh_clear(struct obd_histogram *oh)
2033 {
2034 spin_lock(&oh->oh_lock);
2035 memset(oh->oh_buckets, 0, sizeof(oh->oh_buckets));
2036 spin_unlock(&oh->oh_lock);
2037 }
2038 EXPORT_SYMBOL(lprocfs_oh_clear);
2039
2040 int lprocfs_obd_rd_max_pages_per_rpc(struct seq_file *m, void *data)
2041 {
2042 struct obd_device *dev = data;
2043 struct client_obd *cli = &dev->u.cli;
2044 int rc;
2045
2046 client_obd_list_lock(&cli->cl_loi_list_lock);
2047 rc = seq_printf(m, "%d\n", cli->cl_max_pages_per_rpc);
2048 client_obd_list_unlock(&cli->cl_loi_list_lock);
2049 return rc;
2050 }
2051 EXPORT_SYMBOL(lprocfs_obd_rd_max_pages_per_rpc);
2052
2053 #endif
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