1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41#define DEBUG_SUBSYSTEM S_CLASS
42
43#include "../include/obd_class.h"
44#include "../include/lprocfs_status.h"
45#include "../include/lustre/lustre_idl.h"
46#include <linux/seq_file.h>
47#include <linux/ctype.h>
48
49static 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
107int 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]; 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 %#llx",
120 ret ? sep : "", flags & ~(mask - 1));
121 return ret;
122}
123EXPORT_SYMBOL(obd_connect_flags2str);
124
125int 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
146 buffer[prtn++] = '0';
147 temp_frac *= 10;
148 frac_bits++;
149 }
150
151
152
153
154
155
156
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}
178EXPORT_SYMBOL(lprocfs_read_frac_helper);
179
180int lprocfs_write_frac_helper(const char __user *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 && *end == '.') {
203 int temp_val, pow = 1;
204 int i;
205
206 pbuf = end + 1;
207 if (strlen(pbuf) > 5)
208 pbuf[5] = '\0';
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}
221EXPORT_SYMBOL(lprocfs_write_frac_helper);
222
223static int lprocfs_no_percpu_stats;
224module_param(lprocfs_no_percpu_stats, int, 0644);
225MODULE_PARM_DESC(lprocfs_no_percpu_stats, "Do not alloc percpu data for lprocfs stats");
226
227#define MAX_STRING_SIZE 128
228
229int lprocfs_single_release(struct inode *inode, struct file *file)
230{
231 return single_release(inode, file);
232}
233EXPORT_SYMBOL(lprocfs_single_release);
234
235int lprocfs_seq_release(struct inode *inode, struct file *file)
236{
237 return seq_release(inode, file);
238}
239EXPORT_SYMBOL(lprocfs_seq_release);
240
241
242
243struct dentry *ldebugfs_add_simple(struct dentry *root,
244 char *name, void *data,
245 struct file_operations *fops)
246{
247 struct dentry *entry;
248 umode_t mode = 0;
249
250 if (!root || !name || !fops)
251 return ERR_PTR(-EINVAL);
252
253 if (fops->read)
254 mode = 0444;
255 if (fops->write)
256 mode |= 0200;
257 entry = debugfs_create_file(name, mode, root, data, fops);
258 if (IS_ERR_OR_NULL(entry)) {
259 CERROR("LprocFS: No memory to create <debugfs> entry %s\n", name);
260 return entry ?: ERR_PTR(-ENOMEM);
261 }
262 return entry;
263}
264EXPORT_SYMBOL_GPL(ldebugfs_add_simple);
265
266static struct file_operations lprocfs_generic_fops = { };
267
268int ldebugfs_add_vars(struct dentry *parent,
269 struct lprocfs_vars *list,
270 void *data)
271{
272 if (IS_ERR_OR_NULL(parent) || IS_ERR_OR_NULL(list))
273 return -EINVAL;
274
275 while (list->name) {
276 struct dentry *entry;
277 umode_t mode = 0;
278
279 if (list->proc_mode != 0000) {
280 mode = list->proc_mode;
281 } else if (list->fops) {
282 if (list->fops->read)
283 mode = 0444;
284 if (list->fops->write)
285 mode |= 0200;
286 }
287 entry = debugfs_create_file(list->name, mode, parent,
288 list->data ?: data,
289 list->fops ?: &lprocfs_generic_fops
290 );
291 if (IS_ERR_OR_NULL(entry))
292 return entry ? PTR_ERR(entry) : -ENOMEM;
293 list++;
294 }
295 return 0;
296}
297EXPORT_SYMBOL_GPL(ldebugfs_add_vars);
298
299void ldebugfs_remove(struct dentry **entryp)
300{
301 debugfs_remove_recursive(*entryp);
302 *entryp = NULL;
303}
304EXPORT_SYMBOL_GPL(ldebugfs_remove);
305
306struct dentry *ldebugfs_register(const char *name,
307 struct dentry *parent,
308 struct lprocfs_vars *list, void *data)
309{
310 struct dentry *entry;
311
312 entry = debugfs_create_dir(name, parent);
313 if (IS_ERR_OR_NULL(entry)) {
314 entry = entry ?: ERR_PTR(-ENOMEM);
315 goto out;
316 }
317
318 if (!IS_ERR_OR_NULL(list)) {
319 int rc;
320
321 rc = ldebugfs_add_vars(entry, list, data);
322 if (rc != 0) {
323 debugfs_remove(entry);
324 entry = ERR_PTR(rc);
325 }
326 }
327out:
328 return entry;
329}
330EXPORT_SYMBOL_GPL(ldebugfs_register);
331
332
333int lprocfs_rd_uint(struct seq_file *m, void *data)
334{
335 seq_printf(m, "%u\n", *(unsigned int *)data);
336 return 0;
337}
338EXPORT_SYMBOL(lprocfs_rd_uint);
339
340int lprocfs_wr_uint(struct file *file, const char __user *buffer,
341 unsigned long count, void *data)
342{
343 unsigned *p = data;
344 char dummy[MAX_STRING_SIZE + 1], *end;
345 unsigned long tmp;
346
347 dummy[MAX_STRING_SIZE] = '\0';
348 if (copy_from_user(dummy, buffer, MAX_STRING_SIZE))
349 return -EFAULT;
350
351 tmp = simple_strtoul(dummy, &end, 0);
352 if (dummy == end)
353 return -EINVAL;
354
355 *p = (unsigned int)tmp;
356 return count;
357}
358EXPORT_SYMBOL(lprocfs_wr_uint);
359
360static ssize_t uuid_show(struct kobject *kobj, struct attribute *attr,
361 char *buf)
362{
363 struct obd_device *obd = container_of(kobj, struct obd_device,
364 obd_kobj);
365
366 return sprintf(buf, "%s\n", obd->obd_uuid.uuid);
367}
368LUSTRE_RO_ATTR(uuid);
369
370static ssize_t blocksize_show(struct kobject *kobj, struct attribute *attr,
371 char *buf)
372{
373 struct obd_device *obd = container_of(kobj, struct obd_device,
374 obd_kobj);
375 struct obd_statfs osfs;
376 int rc = obd_statfs(NULL, obd->obd_self_export, &osfs,
377 cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS),
378 OBD_STATFS_NODELAY);
379 if (!rc)
380 return sprintf(buf, "%u\n", osfs.os_bsize);
381
382 return rc;
383}
384LUSTRE_RO_ATTR(blocksize);
385
386static ssize_t kbytestotal_show(struct kobject *kobj, struct attribute *attr,
387 char *buf)
388{
389 struct obd_device *obd = container_of(kobj, struct obd_device,
390 obd_kobj);
391 struct obd_statfs osfs;
392 int rc = obd_statfs(NULL, obd->obd_self_export, &osfs,
393 cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS),
394 OBD_STATFS_NODELAY);
395 if (!rc) {
396 __u32 blk_size = osfs.os_bsize >> 10;
397 __u64 result = osfs.os_blocks;
398
399 while (blk_size >>= 1)
400 result <<= 1;
401
402 return sprintf(buf, "%llu\n", result);
403 }
404
405 return rc;
406}
407LUSTRE_RO_ATTR(kbytestotal);
408
409static ssize_t kbytesfree_show(struct kobject *kobj, struct attribute *attr,
410 char *buf)
411{
412 struct obd_device *obd = container_of(kobj, struct obd_device,
413 obd_kobj);
414 struct obd_statfs osfs;
415 int rc = obd_statfs(NULL, obd->obd_self_export, &osfs,
416 cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS),
417 OBD_STATFS_NODELAY);
418 if (!rc) {
419 __u32 blk_size = osfs.os_bsize >> 10;
420 __u64 result = osfs.os_bfree;
421
422 while (blk_size >>= 1)
423 result <<= 1;
424
425 return sprintf(buf, "%llu\n", result);
426 }
427
428 return rc;
429}
430LUSTRE_RO_ATTR(kbytesfree);
431
432static ssize_t kbytesavail_show(struct kobject *kobj, struct attribute *attr,
433 char *buf)
434{
435 struct obd_device *obd = container_of(kobj, struct obd_device,
436 obd_kobj);
437 struct obd_statfs osfs;
438 int rc = obd_statfs(NULL, obd->obd_self_export, &osfs,
439 cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS),
440 OBD_STATFS_NODELAY);
441 if (!rc) {
442 __u32 blk_size = osfs.os_bsize >> 10;
443 __u64 result = osfs.os_bavail;
444
445 while (blk_size >>= 1)
446 result <<= 1;
447
448 return sprintf(buf, "%llu\n", result);
449 }
450
451 return rc;
452}
453LUSTRE_RO_ATTR(kbytesavail);
454
455static ssize_t filestotal_show(struct kobject *kobj, struct attribute *attr,
456 char *buf)
457{
458 struct obd_device *obd = container_of(kobj, struct obd_device,
459 obd_kobj);
460 struct obd_statfs osfs;
461 int rc = obd_statfs(NULL, obd->obd_self_export, &osfs,
462 cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS),
463 OBD_STATFS_NODELAY);
464 if (!rc)
465 return sprintf(buf, "%llu\n", osfs.os_files);
466
467 return rc;
468}
469LUSTRE_RO_ATTR(filestotal);
470
471static ssize_t filesfree_show(struct kobject *kobj, struct attribute *attr,
472 char *buf)
473{
474 struct obd_device *obd = container_of(kobj, struct obd_device,
475 obd_kobj);
476 struct obd_statfs osfs;
477 int rc = obd_statfs(NULL, obd->obd_self_export, &osfs,
478 cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS),
479 OBD_STATFS_NODELAY);
480 if (!rc)
481 return sprintf(buf, "%llu\n", osfs.os_ffree);
482
483 return rc;
484}
485LUSTRE_RO_ATTR(filesfree);
486
487int lprocfs_rd_server_uuid(struct seq_file *m, void *data)
488{
489 struct obd_device *obd = data;
490 struct obd_import *imp;
491 char *imp_state_name = NULL;
492 int rc;
493
494 LASSERT(obd);
495 rc = lprocfs_climp_check(obd);
496 if (rc)
497 return rc;
498
499 imp = obd->u.cli.cl_import;
500 imp_state_name = ptlrpc_import_state_name(imp->imp_state);
501 seq_printf(m, "%s\t%s%s\n",
502 obd2cli_tgt(obd), imp_state_name,
503 imp->imp_deactive ? "\tDEACTIVATED" : "");
504
505 up_read(&obd->u.cli.cl_sem);
506
507 return 0;
508}
509EXPORT_SYMBOL(lprocfs_rd_server_uuid);
510
511int lprocfs_rd_conn_uuid(struct seq_file *m, void *data)
512{
513 struct obd_device *obd = data;
514 struct ptlrpc_connection *conn;
515 int rc;
516
517 LASSERT(obd);
518
519 rc = lprocfs_climp_check(obd);
520 if (rc)
521 return rc;
522
523 conn = obd->u.cli.cl_import->imp_connection;
524 if (conn && obd->u.cli.cl_import)
525 seq_printf(m, "%s\n", conn->c_remote_uuid.uuid);
526 else
527 seq_puts(m, "<none>\n");
528
529 up_read(&obd->u.cli.cl_sem);
530
531 return 0;
532}
533EXPORT_SYMBOL(lprocfs_rd_conn_uuid);
534
535
536void lprocfs_stats_collect(struct lprocfs_stats *stats, int idx,
537 struct lprocfs_counter *cnt)
538{
539 unsigned int num_entry;
540 struct lprocfs_counter *percpu_cntr;
541 int i;
542 unsigned long flags = 0;
543
544 memset(cnt, 0, sizeof(*cnt));
545
546 if (!stats) {
547
548 cnt->lc_count = 1;
549 return;
550 }
551
552 cnt->lc_min = LC_MIN_INIT;
553
554 num_entry = lprocfs_stats_lock(stats, LPROCFS_GET_NUM_CPU, &flags);
555
556 for (i = 0; i < num_entry; i++) {
557 if (!stats->ls_percpu[i])
558 continue;
559 percpu_cntr = lprocfs_stats_counter_get(stats, i, idx);
560
561 cnt->lc_count += percpu_cntr->lc_count;
562 cnt->lc_sum += percpu_cntr->lc_sum;
563 if (percpu_cntr->lc_min < cnt->lc_min)
564 cnt->lc_min = percpu_cntr->lc_min;
565 if (percpu_cntr->lc_max > cnt->lc_max)
566 cnt->lc_max = percpu_cntr->lc_max;
567 cnt->lc_sumsquare += percpu_cntr->lc_sumsquare;
568 }
569
570 lprocfs_stats_unlock(stats, LPROCFS_GET_NUM_CPU, &flags);
571}
572EXPORT_SYMBOL(lprocfs_stats_collect);
573
574
575
576
577#define flag2str(flag, first) \
578 do { \
579 if (imp->imp_##flag) \
580 seq_printf(m, "%s" #flag, first ? "" : ", "); \
581 } while (0)
582static int obd_import_flags2str(struct obd_import *imp, struct seq_file *m)
583{
584 bool first = true;
585
586 if (imp->imp_obd->obd_no_recov) {
587 seq_printf(m, "no_recov");
588 first = false;
589 }
590
591 flag2str(invalid, first);
592 first = false;
593 flag2str(deactive, first);
594 flag2str(replayable, first);
595 flag2str(pingable, first);
596 return 0;
597}
598
599#undef flags2str
600
601static void obd_connect_seq_flags2str(struct seq_file *m, __u64 flags, char *sep)
602{
603 __u64 mask = 1;
604 int i;
605 bool first = true;
606
607 for (i = 0; obd_connect_names[i]; i++, mask <<= 1) {
608 if (flags & mask) {
609 seq_printf(m, "%s%s",
610 first ? sep : "", obd_connect_names[i]);
611 first = false;
612 }
613 }
614 if (flags & ~(mask - 1))
615 seq_printf(m, "%sunknown flags %#llx",
616 first ? sep : "", flags & ~(mask - 1));
617}
618
619int lprocfs_rd_import(struct seq_file *m, void *data)
620{
621 char nidstr[LNET_NIDSTR_SIZE];
622 struct lprocfs_counter ret;
623 struct lprocfs_counter_header *header;
624 struct obd_device *obd = data;
625 struct obd_import *imp;
626 struct obd_import_conn *conn;
627 int j;
628 int k;
629 int rw = 0;
630 int rc;
631
632 LASSERT(obd);
633 rc = lprocfs_climp_check(obd);
634 if (rc)
635 return rc;
636
637 imp = obd->u.cli.cl_import;
638
639 seq_printf(m,
640 "import:\n"
641 " name: %s\n"
642 " target: %s\n"
643 " state: %s\n"
644 " instance: %u\n"
645 " connect_flags: [ ",
646 obd->obd_name,
647 obd2cli_tgt(obd),
648 ptlrpc_import_state_name(imp->imp_state),
649 imp->imp_connect_data.ocd_instance);
650 obd_connect_seq_flags2str(m, imp->imp_connect_data.ocd_connect_flags,
651 ", ");
652 seq_printf(m,
653 " ]\n"
654 " import_flags: [ ");
655 obd_import_flags2str(imp, m);
656
657 seq_printf(m,
658 " ]\n"
659 " connection:\n"
660 " failover_nids: [ ");
661 spin_lock(&imp->imp_lock);
662 j = 0;
663 list_for_each_entry(conn, &imp->imp_conn_list, oic_item) {
664 libcfs_nid2str_r(conn->oic_conn->c_peer.nid,
665 nidstr, sizeof(nidstr));
666 seq_printf(m, "%s%s", j ? ", " : "", nidstr);
667 j++;
668 }
669 if (imp->imp_connection)
670 libcfs_nid2str_r(imp->imp_connection->c_peer.nid,
671 nidstr, sizeof(nidstr));
672 else
673 strncpy(nidstr, "<none>", sizeof(nidstr));
674 seq_printf(m,
675 " ]\n"
676 " current_connection: %s\n"
677 " connection_attempts: %u\n"
678 " generation: %u\n"
679 " in-progress_invalidations: %u\n",
680 nidstr,
681 imp->imp_conn_cnt,
682 imp->imp_generation,
683 atomic_read(&imp->imp_inval_count));
684 spin_unlock(&imp->imp_lock);
685
686 if (!obd->obd_svc_stats)
687 goto out_climp;
688
689 header = &obd->obd_svc_stats->ls_cnt_header[PTLRPC_REQWAIT_CNTR];
690 lprocfs_stats_collect(obd->obd_svc_stats, PTLRPC_REQWAIT_CNTR, &ret);
691 if (ret.lc_count != 0) {
692
693 __u64 sum = ret.lc_sum;
694
695 do_div(sum, ret.lc_count);
696 ret.lc_sum = sum;
697 } else
698 ret.lc_sum = 0;
699 seq_printf(m,
700 " rpcs:\n"
701 " inflight: %u\n"
702 " unregistering: %u\n"
703 " timeouts: %u\n"
704 " avg_waittime: %llu %s\n",
705 atomic_read(&imp->imp_inflight),
706 atomic_read(&imp->imp_unregistering),
707 atomic_read(&imp->imp_timeouts),
708 ret.lc_sum, header->lc_units);
709
710 k = 0;
711 for (j = 0; j < IMP_AT_MAX_PORTALS; j++) {
712 if (imp->imp_at.iat_portal[j] == 0)
713 break;
714 k = max_t(unsigned int, k,
715 at_get(&imp->imp_at.iat_service_estimate[j]));
716 }
717 seq_printf(m,
718 " service_estimates:\n"
719 " services: %u sec\n"
720 " network: %u sec\n",
721 k,
722 at_get(&imp->imp_at.iat_net_latency));
723
724 seq_printf(m,
725 " transactions:\n"
726 " last_replay: %llu\n"
727 " peer_committed: %llu\n"
728 " last_checked: %llu\n",
729 imp->imp_last_replay_transno,
730 imp->imp_peer_committed_transno,
731 imp->imp_last_transno_checked);
732
733
734 for (rw = 0; rw <= 1; rw++) {
735 lprocfs_stats_collect(obd->obd_svc_stats,
736 PTLRPC_LAST_CNTR + BRW_READ_BYTES + rw,
737 &ret);
738 if (ret.lc_sum > 0 && ret.lc_count > 0) {
739
740 __u64 sum = ret.lc_sum;
741
742 do_div(sum, ret.lc_count);
743 ret.lc_sum = sum;
744 seq_printf(m,
745 " %s_data_averages:\n"
746 " bytes_per_rpc: %llu\n",
747 rw ? "write" : "read",
748 ret.lc_sum);
749 }
750 k = (int)ret.lc_sum;
751 j = opcode_offset(OST_READ + rw) + EXTRA_MAX_OPCODES;
752 header = &obd->obd_svc_stats->ls_cnt_header[j];
753 lprocfs_stats_collect(obd->obd_svc_stats, j, &ret);
754 if (ret.lc_sum > 0 && ret.lc_count != 0) {
755
756 __u64 sum = ret.lc_sum;
757
758 do_div(sum, ret.lc_count);
759 ret.lc_sum = sum;
760 seq_printf(m,
761 " %s_per_rpc: %llu\n",
762 header->lc_units, ret.lc_sum);
763 j = (int)ret.lc_sum;
764 if (j > 0)
765 seq_printf(m,
766 " MB_per_sec: %u.%.02u\n",
767 k / j, (100 * k / j) % 100);
768 }
769 }
770
771out_climp:
772 up_read(&obd->u.cli.cl_sem);
773 return 0;
774}
775EXPORT_SYMBOL(lprocfs_rd_import);
776
777int lprocfs_rd_state(struct seq_file *m, void *data)
778{
779 struct obd_device *obd = data;
780 struct obd_import *imp;
781 int j, k, rc;
782
783 LASSERT(obd);
784 rc = lprocfs_climp_check(obd);
785 if (rc)
786 return rc;
787
788 imp = obd->u.cli.cl_import;
789
790 seq_printf(m, "current_state: %s\n",
791 ptlrpc_import_state_name(imp->imp_state));
792 seq_printf(m, "state_history:\n");
793 k = imp->imp_state_hist_idx;
794 for (j = 0; j < IMP_STATE_HIST_LEN; j++) {
795 struct import_state_hist *ish =
796 &imp->imp_state_hist[(k + j) % IMP_STATE_HIST_LEN];
797 if (ish->ish_state == 0)
798 continue;
799 seq_printf(m, " - [ %lld, %s ]\n", (s64)ish->ish_time,
800 ptlrpc_import_state_name(ish->ish_state));
801 }
802
803 up_read(&obd->u.cli.cl_sem);
804 return 0;
805}
806EXPORT_SYMBOL(lprocfs_rd_state);
807
808int lprocfs_at_hist_helper(struct seq_file *m, struct adaptive_timeout *at)
809{
810 int i;
811
812 for (i = 0; i < AT_BINS; i++)
813 seq_printf(m, "%3u ", at->at_hist[i]);
814 seq_printf(m, "\n");
815 return 0;
816}
817EXPORT_SYMBOL(lprocfs_at_hist_helper);
818
819
820int lprocfs_rd_timeouts(struct seq_file *m, void *data)
821{
822 struct obd_device *obd = data;
823 struct obd_import *imp;
824 unsigned int cur, worst;
825 time64_t now, worstt;
826 struct dhms ts;
827 int i, rc;
828
829 LASSERT(obd);
830 rc = lprocfs_climp_check(obd);
831 if (rc)
832 return rc;
833
834 imp = obd->u.cli.cl_import;
835
836 now = ktime_get_real_seconds();
837
838
839 s2dhms(&ts, now - imp->imp_last_reply_time);
840 seq_printf(m, "%-10s : %lld, " DHMS_FMT " ago\n",
841 "last reply", (s64)imp->imp_last_reply_time, DHMS_VARS(&ts));
842
843 cur = at_get(&imp->imp_at.iat_net_latency);
844 worst = imp->imp_at.iat_net_latency.at_worst_ever;
845 worstt = imp->imp_at.iat_net_latency.at_worst_time;
846 s2dhms(&ts, now - worstt);
847 seq_printf(m, "%-10s : cur %3u worst %3u (at %lld, " DHMS_FMT " ago) ",
848 "network", cur, worst, (s64)worstt, DHMS_VARS(&ts));
849 lprocfs_at_hist_helper(m, &imp->imp_at.iat_net_latency);
850
851 for (i = 0; i < IMP_AT_MAX_PORTALS; i++) {
852 if (imp->imp_at.iat_portal[i] == 0)
853 break;
854 cur = at_get(&imp->imp_at.iat_service_estimate[i]);
855 worst = imp->imp_at.iat_service_estimate[i].at_worst_ever;
856 worstt = imp->imp_at.iat_service_estimate[i].at_worst_time;
857 s2dhms(&ts, now - worstt);
858 seq_printf(m, "portal %-2d : cur %3u worst %3u (at %lld, "
859 DHMS_FMT " ago) ", imp->imp_at.iat_portal[i],
860 cur, worst, (s64)worstt, DHMS_VARS(&ts));
861 lprocfs_at_hist_helper(m, &imp->imp_at.iat_service_estimate[i]);
862 }
863
864 up_read(&obd->u.cli.cl_sem);
865 return 0;
866}
867EXPORT_SYMBOL(lprocfs_rd_timeouts);
868
869int lprocfs_rd_connect_flags(struct seq_file *m, void *data)
870{
871 struct obd_device *obd = data;
872 __u64 flags;
873 int rc;
874
875 rc = lprocfs_climp_check(obd);
876 if (rc)
877 return rc;
878
879 flags = obd->u.cli.cl_import->imp_connect_data.ocd_connect_flags;
880 seq_printf(m, "flags=%#llx\n", flags);
881 obd_connect_seq_flags2str(m, flags, "\n");
882 seq_printf(m, "\n");
883 up_read(&obd->u.cli.cl_sem);
884 return 0;
885}
886EXPORT_SYMBOL(lprocfs_rd_connect_flags);
887
888static struct attribute *obd_def_attrs[] = {
889 &lustre_attr_blocksize.attr,
890 &lustre_attr_kbytestotal.attr,
891 &lustre_attr_kbytesfree.attr,
892 &lustre_attr_kbytesavail.attr,
893 &lustre_attr_filestotal.attr,
894 &lustre_attr_filesfree.attr,
895 &lustre_attr_uuid.attr,
896 NULL,
897};
898
899static void obd_sysfs_release(struct kobject *kobj)
900{
901 struct obd_device *obd = container_of(kobj, struct obd_device,
902 obd_kobj);
903
904 complete(&obd->obd_kobj_unregister);
905}
906
907static struct kobj_type obd_ktype = {
908 .default_attrs = obd_def_attrs,
909 .sysfs_ops = &lustre_sysfs_ops,
910 .release = obd_sysfs_release,
911};
912
913int lprocfs_obd_setup(struct obd_device *obd, struct lprocfs_vars *list,
914 struct attribute_group *attrs)
915{
916 int rc = 0;
917
918 init_completion(&obd->obd_kobj_unregister);
919 rc = kobject_init_and_add(&obd->obd_kobj, &obd_ktype,
920 obd->obd_type->typ_kobj,
921 "%s", obd->obd_name);
922 if (rc)
923 return rc;
924
925 if (attrs) {
926 rc = sysfs_create_group(&obd->obd_kobj, attrs);
927 if (rc) {
928 kobject_put(&obd->obd_kobj);
929 return rc;
930 }
931 }
932
933 obd->obd_debugfs_entry = ldebugfs_register(obd->obd_name,
934 obd->obd_type->typ_debugfs_entry,
935 list, obd);
936 if (IS_ERR_OR_NULL(obd->obd_debugfs_entry)) {
937 rc = obd->obd_debugfs_entry ? PTR_ERR(obd->obd_debugfs_entry)
938 : -ENOMEM;
939 CERROR("error %d setting up lprocfs for %s\n",
940 rc, obd->obd_name);
941 obd->obd_debugfs_entry = NULL;
942 }
943
944 return rc;
945}
946EXPORT_SYMBOL_GPL(lprocfs_obd_setup);
947
948int lprocfs_obd_cleanup(struct obd_device *obd)
949{
950 if (!obd)
951 return -EINVAL;
952
953 if (!IS_ERR_OR_NULL(obd->obd_debugfs_entry))
954 ldebugfs_remove(&obd->obd_debugfs_entry);
955
956 kobject_put(&obd->obd_kobj);
957 wait_for_completion(&obd->obd_kobj_unregister);
958
959 return 0;
960}
961EXPORT_SYMBOL_GPL(lprocfs_obd_cleanup);
962
963int lprocfs_stats_alloc_one(struct lprocfs_stats *stats, unsigned int cpuid)
964{
965 struct lprocfs_counter *cntr;
966 unsigned int percpusize;
967 int rc = -ENOMEM;
968 unsigned long flags = 0;
969 int i;
970
971 LASSERT(!stats->ls_percpu[cpuid]);
972 LASSERT((stats->ls_flags & LPROCFS_STATS_FLAG_NOPERCPU) == 0);
973
974 percpusize = lprocfs_stats_counter_size(stats);
975 LIBCFS_ALLOC_ATOMIC(stats->ls_percpu[cpuid], percpusize);
976 if (stats->ls_percpu[cpuid]) {
977 rc = 0;
978 if (unlikely(stats->ls_biggest_alloc_num <= cpuid)) {
979 if (stats->ls_flags & LPROCFS_STATS_FLAG_IRQ_SAFE)
980 spin_lock_irqsave(&stats->ls_lock, flags);
981 else
982 spin_lock(&stats->ls_lock);
983 if (stats->ls_biggest_alloc_num <= cpuid)
984 stats->ls_biggest_alloc_num = cpuid + 1;
985 if (stats->ls_flags & LPROCFS_STATS_FLAG_IRQ_SAFE)
986 spin_unlock_irqrestore(&stats->ls_lock, flags);
987 else
988 spin_unlock(&stats->ls_lock);
989 }
990
991 for (i = 0; i < stats->ls_num; ++i) {
992 cntr = lprocfs_stats_counter_get(stats, cpuid, i);
993 cntr->lc_min = LC_MIN_INIT;
994 }
995 }
996 return rc;
997}
998EXPORT_SYMBOL(lprocfs_stats_alloc_one);
999
1000struct lprocfs_stats *lprocfs_alloc_stats(unsigned int num,
1001 enum lprocfs_stats_flags flags)
1002{
1003 struct lprocfs_stats *stats;
1004 unsigned int num_entry;
1005 unsigned int percpusize = 0;
1006 int i;
1007
1008 if (num == 0)
1009 return NULL;
1010
1011 if (lprocfs_no_percpu_stats != 0)
1012 flags |= LPROCFS_STATS_FLAG_NOPERCPU;
1013
1014 if (flags & LPROCFS_STATS_FLAG_NOPERCPU)
1015 num_entry = 1;
1016 else
1017 num_entry = num_possible_cpus();
1018
1019
1020 LIBCFS_ALLOC(stats, offsetof(typeof(*stats), ls_percpu[num_entry]));
1021 if (!stats)
1022 return NULL;
1023
1024 stats->ls_num = num;
1025 stats->ls_flags = flags;
1026 spin_lock_init(&stats->ls_lock);
1027
1028
1029 LIBCFS_ALLOC(stats->ls_cnt_header,
1030 stats->ls_num * sizeof(struct lprocfs_counter_header));
1031 if (!stats->ls_cnt_header)
1032 goto fail;
1033
1034 if ((flags & LPROCFS_STATS_FLAG_NOPERCPU) != 0) {
1035
1036 percpusize = lprocfs_stats_counter_size(stats);
1037 LIBCFS_ALLOC_ATOMIC(stats->ls_percpu[0], percpusize);
1038 if (!stats->ls_percpu[0])
1039 goto fail;
1040 stats->ls_biggest_alloc_num = 1;
1041 } else if ((flags & LPROCFS_STATS_FLAG_IRQ_SAFE) != 0) {
1042
1043 for (i = 0; i < num_entry; ++i)
1044 if (lprocfs_stats_alloc_one(stats, i) < 0)
1045 goto fail;
1046 }
1047
1048 return stats;
1049
1050fail:
1051 lprocfs_free_stats(&stats);
1052 return NULL;
1053}
1054EXPORT_SYMBOL(lprocfs_alloc_stats);
1055
1056void lprocfs_free_stats(struct lprocfs_stats **statsh)
1057{
1058 struct lprocfs_stats *stats = *statsh;
1059 unsigned int num_entry;
1060 unsigned int percpusize;
1061 unsigned int i;
1062
1063 if (!stats || stats->ls_num == 0)
1064 return;
1065 *statsh = NULL;
1066
1067 if (stats->ls_flags & LPROCFS_STATS_FLAG_NOPERCPU)
1068 num_entry = 1;
1069 else
1070 num_entry = num_possible_cpus();
1071
1072 percpusize = lprocfs_stats_counter_size(stats);
1073 for (i = 0; i < num_entry; i++)
1074 if (stats->ls_percpu[i])
1075 LIBCFS_FREE(stats->ls_percpu[i], percpusize);
1076 if (stats->ls_cnt_header)
1077 LIBCFS_FREE(stats->ls_cnt_header, stats->ls_num *
1078 sizeof(struct lprocfs_counter_header));
1079 LIBCFS_FREE(stats, offsetof(typeof(*stats), ls_percpu[num_entry]));
1080}
1081EXPORT_SYMBOL(lprocfs_free_stats);
1082
1083void lprocfs_clear_stats(struct lprocfs_stats *stats)
1084{
1085 struct lprocfs_counter *percpu_cntr;
1086 int i;
1087 int j;
1088 unsigned int num_entry;
1089 unsigned long flags = 0;
1090
1091 num_entry = lprocfs_stats_lock(stats, LPROCFS_GET_NUM_CPU, &flags);
1092
1093 for (i = 0; i < num_entry; i++) {
1094 if (!stats->ls_percpu[i])
1095 continue;
1096 for (j = 0; j < stats->ls_num; j++) {
1097 percpu_cntr = lprocfs_stats_counter_get(stats, i, j);
1098 percpu_cntr->lc_count = 0;
1099 percpu_cntr->lc_min = LC_MIN_INIT;
1100 percpu_cntr->lc_max = 0;
1101 percpu_cntr->lc_sumsquare = 0;
1102 percpu_cntr->lc_sum = 0;
1103 if (stats->ls_flags & LPROCFS_STATS_FLAG_IRQ_SAFE)
1104 percpu_cntr->lc_sum_irq = 0;
1105 }
1106 }
1107
1108 lprocfs_stats_unlock(stats, LPROCFS_GET_NUM_CPU, &flags);
1109}
1110EXPORT_SYMBOL(lprocfs_clear_stats);
1111
1112static ssize_t lprocfs_stats_seq_write(struct file *file,
1113 const char __user *buf,
1114 size_t len, loff_t *off)
1115{
1116 struct seq_file *seq = file->private_data;
1117 struct lprocfs_stats *stats = seq->private;
1118
1119 lprocfs_clear_stats(stats);
1120
1121 return len;
1122}
1123
1124static void *lprocfs_stats_seq_start(struct seq_file *p, loff_t *pos)
1125{
1126 struct lprocfs_stats *stats = p->private;
1127
1128 return (*pos < stats->ls_num) ? pos : NULL;
1129}
1130
1131static void lprocfs_stats_seq_stop(struct seq_file *p, void *v)
1132{
1133}
1134
1135static void *lprocfs_stats_seq_next(struct seq_file *p, void *v, loff_t *pos)
1136{
1137 (*pos)++;
1138 return lprocfs_stats_seq_start(p, pos);
1139}
1140
1141
1142static int lprocfs_stats_seq_show(struct seq_file *p, void *v)
1143{
1144 struct lprocfs_stats *stats = p->private;
1145 struct lprocfs_counter_header *hdr;
1146 struct lprocfs_counter ctr;
1147 int idx = *(loff_t *)v;
1148
1149 if (idx == 0) {
1150 struct timespec64 now;
1151
1152 ktime_get_real_ts64(&now);
1153 seq_printf(p, "%-25s %llu.%9lu secs.usecs\n",
1154 "snapshot_time",
1155 (s64)now.tv_sec, (unsigned long)now.tv_nsec);
1156 }
1157
1158 hdr = &stats->ls_cnt_header[idx];
1159 lprocfs_stats_collect(stats, idx, &ctr);
1160
1161 if (ctr.lc_count != 0) {
1162 seq_printf(p, "%-25s %lld samples [%s]",
1163 hdr->lc_name, ctr.lc_count, hdr->lc_units);
1164
1165 if ((hdr->lc_config & LPROCFS_CNTR_AVGMINMAX) &&
1166 (ctr.lc_count > 0)) {
1167 seq_printf(p, " %lld %lld %lld",
1168 ctr.lc_min, ctr.lc_max, ctr.lc_sum);
1169 if (hdr->lc_config & LPROCFS_CNTR_STDDEV)
1170 seq_printf(p, " %lld", ctr.lc_sumsquare);
1171 }
1172 seq_putc(p, '\n');
1173 }
1174
1175 return 0;
1176}
1177
1178static const struct seq_operations lprocfs_stats_seq_sops = {
1179 .start = lprocfs_stats_seq_start,
1180 .stop = lprocfs_stats_seq_stop,
1181 .next = lprocfs_stats_seq_next,
1182 .show = lprocfs_stats_seq_show,
1183};
1184
1185static int lprocfs_stats_seq_open(struct inode *inode, struct file *file)
1186{
1187 struct seq_file *seq;
1188 int rc;
1189
1190 rc = seq_open(file, &lprocfs_stats_seq_sops);
1191 if (rc)
1192 return rc;
1193
1194 seq = file->private_data;
1195 seq->private = inode->i_private;
1196
1197 return 0;
1198}
1199
1200static const struct file_operations lprocfs_stats_seq_fops = {
1201 .owner = THIS_MODULE,
1202 .open = lprocfs_stats_seq_open,
1203 .read = seq_read,
1204 .write = lprocfs_stats_seq_write,
1205 .llseek = seq_lseek,
1206 .release = lprocfs_seq_release,
1207};
1208
1209int ldebugfs_register_stats(struct dentry *parent, const char *name,
1210 struct lprocfs_stats *stats)
1211{
1212 struct dentry *entry;
1213
1214 LASSERT(!IS_ERR_OR_NULL(parent));
1215
1216 entry = debugfs_create_file(name, 0644, parent, stats,
1217 &lprocfs_stats_seq_fops);
1218 if (IS_ERR_OR_NULL(entry))
1219 return entry ? PTR_ERR(entry) : -ENOMEM;
1220
1221 return 0;
1222}
1223EXPORT_SYMBOL_GPL(ldebugfs_register_stats);
1224
1225void lprocfs_counter_init(struct lprocfs_stats *stats, int index,
1226 unsigned conf, const char *name, const char *units)
1227{
1228 struct lprocfs_counter_header *header;
1229 struct lprocfs_counter *percpu_cntr;
1230 unsigned long flags = 0;
1231 unsigned int i;
1232 unsigned int num_cpu;
1233
1234 header = &stats->ls_cnt_header[index];
1235 LASSERTF(header, "Failed to allocate stats header:[%d]%s/%s\n",
1236 index, name, units);
1237
1238 header->lc_config = conf;
1239 header->lc_name = name;
1240 header->lc_units = units;
1241
1242 num_cpu = lprocfs_stats_lock(stats, LPROCFS_GET_NUM_CPU, &flags);
1243 for (i = 0; i < num_cpu; ++i) {
1244 if (!stats->ls_percpu[i])
1245 continue;
1246 percpu_cntr = lprocfs_stats_counter_get(stats, i, index);
1247 percpu_cntr->lc_count = 0;
1248 percpu_cntr->lc_min = LC_MIN_INIT;
1249 percpu_cntr->lc_max = 0;
1250 percpu_cntr->lc_sumsquare = 0;
1251 percpu_cntr->lc_sum = 0;
1252 if ((stats->ls_flags & LPROCFS_STATS_FLAG_IRQ_SAFE) != 0)
1253 percpu_cntr->lc_sum_irq = 0;
1254 }
1255 lprocfs_stats_unlock(stats, LPROCFS_GET_NUM_CPU, &flags);
1256}
1257EXPORT_SYMBOL(lprocfs_counter_init);
1258
1259int lprocfs_exp_cleanup(struct obd_export *exp)
1260{
1261 return 0;
1262}
1263EXPORT_SYMBOL(lprocfs_exp_cleanup);
1264
1265__s64 lprocfs_read_helper(struct lprocfs_counter *lc,
1266 struct lprocfs_counter_header *header,
1267 enum lprocfs_stats_flags flags,
1268 enum lprocfs_fields_flags field)
1269{
1270 __s64 ret = 0;
1271
1272 if (!lc || !header)
1273 return 0;
1274
1275 switch (field) {
1276 case LPROCFS_FIELDS_FLAGS_CONFIG:
1277 ret = header->lc_config;
1278 break;
1279 case LPROCFS_FIELDS_FLAGS_SUM:
1280 ret = lc->lc_sum;
1281 if ((flags & LPROCFS_STATS_FLAG_IRQ_SAFE) != 0)
1282 ret += lc->lc_sum_irq;
1283 break;
1284 case LPROCFS_FIELDS_FLAGS_MIN:
1285 ret = lc->lc_min;
1286 break;
1287 case LPROCFS_FIELDS_FLAGS_MAX:
1288 ret = lc->lc_max;
1289 break;
1290 case LPROCFS_FIELDS_FLAGS_AVG:
1291 ret = (lc->lc_max - lc->lc_min) / 2;
1292 break;
1293 case LPROCFS_FIELDS_FLAGS_SUMSQUARE:
1294 ret = lc->lc_sumsquare;
1295 break;
1296 case LPROCFS_FIELDS_FLAGS_COUNT:
1297 ret = lc->lc_count;
1298 break;
1299 default:
1300 break;
1301 }
1302
1303 return 0;
1304}
1305EXPORT_SYMBOL(lprocfs_read_helper);
1306
1307int lprocfs_write_helper(const char __user *buffer, unsigned long count,
1308 int *val)
1309{
1310 return lprocfs_write_frac_helper(buffer, count, val, 1);
1311}
1312EXPORT_SYMBOL(lprocfs_write_helper);
1313
1314int lprocfs_write_u64_helper(const char __user *buffer, unsigned long count,
1315 __u64 *val)
1316{
1317 return lprocfs_write_frac_u64_helper(buffer, count, val, 1);
1318}
1319EXPORT_SYMBOL(lprocfs_write_u64_helper);
1320
1321int lprocfs_write_frac_u64_helper(const char __user *buffer,
1322 unsigned long count, __u64 *val, int mult)
1323{
1324 char kernbuf[22], *end, *pbuf;
1325 __u64 whole, frac = 0, units;
1326 unsigned frac_d = 1;
1327 int sign = 1;
1328
1329 if (count > (sizeof(kernbuf) - 1))
1330 return -EINVAL;
1331
1332 if (copy_from_user(kernbuf, buffer, count))
1333 return -EFAULT;
1334
1335 kernbuf[count] = '\0';
1336 pbuf = kernbuf;
1337 if (*pbuf == '-') {
1338 sign = -1;
1339 pbuf++;
1340 }
1341
1342 whole = simple_strtoull(pbuf, &end, 10);
1343 if (pbuf == end)
1344 return -EINVAL;
1345
1346 if (*end == '.') {
1347 int i;
1348
1349 pbuf = end + 1;
1350
1351
1352 if (strlen(pbuf) > 10)
1353 pbuf[10] = '\0';
1354
1355 frac = simple_strtoull(pbuf, &end, 10);
1356
1357 for (i = 0; i < (end - pbuf); i++)
1358 frac_d *= 10;
1359 }
1360
1361 units = 1;
1362 if (end) {
1363 switch (tolower(*end)) {
1364 case 'p':
1365 units <<= 10;
1366 case 't':
1367 units <<= 10;
1368 case 'g':
1369 units <<= 10;
1370 case 'm':
1371 units <<= 10;
1372 case 'k':
1373 units <<= 10;
1374 }
1375 }
1376
1377 if (units > 1)
1378 mult = units;
1379
1380 frac *= mult;
1381 do_div(frac, frac_d);
1382 *val = sign * (whole * mult + frac);
1383 return 0;
1384}
1385EXPORT_SYMBOL(lprocfs_write_frac_u64_helper);
1386
1387static char *lprocfs_strnstr(const char *s1, const char *s2, size_t len)
1388{
1389 size_t l2;
1390
1391 l2 = strlen(s2);
1392 if (!l2)
1393 return (char *)s1;
1394 while (len >= l2) {
1395 len--;
1396 if (!memcmp(s1, s2, l2))
1397 return (char *)s1;
1398 s1++;
1399 }
1400 return NULL;
1401}
1402
1403
1404
1405
1406
1407
1408char *lprocfs_find_named_value(const char *buffer, const char *name,
1409 size_t *count)
1410{
1411 char *val;
1412 size_t buflen = *count;
1413
1414
1415 val = lprocfs_strnstr(buffer, name, buflen);
1416 if (!val)
1417 return (char *)buffer;
1418
1419 val += strlen(name);
1420 while (val < buffer + buflen && isspace(*val))
1421 val++;
1422
1423 *count = 0;
1424 while (val < buffer + buflen && isalnum(*val)) {
1425 ++*count;
1426 ++val;
1427 }
1428
1429 return val - *count;
1430}
1431EXPORT_SYMBOL(lprocfs_find_named_value);
1432
1433int ldebugfs_seq_create(struct dentry *parent, const char *name,
1434 umode_t mode, const struct file_operations *seq_fops,
1435 void *data)
1436{
1437 struct dentry *entry;
1438
1439
1440 LASSERT((seq_fops->write == NULL) == ((mode & 0222) == 0));
1441
1442 entry = debugfs_create_file(name, mode, parent, data, seq_fops);
1443 if (IS_ERR_OR_NULL(entry))
1444 return entry ? PTR_ERR(entry) : -ENOMEM;
1445
1446 return 0;
1447}
1448EXPORT_SYMBOL_GPL(ldebugfs_seq_create);
1449
1450int ldebugfs_obd_seq_create(struct obd_device *dev,
1451 const char *name,
1452 umode_t mode,
1453 const struct file_operations *seq_fops,
1454 void *data)
1455{
1456 return ldebugfs_seq_create(dev->obd_debugfs_entry, name,
1457 mode, seq_fops, data);
1458}
1459EXPORT_SYMBOL_GPL(ldebugfs_obd_seq_create);
1460
1461void lprocfs_oh_tally(struct obd_histogram *oh, unsigned int value)
1462{
1463 if (value >= OBD_HIST_MAX)
1464 value = OBD_HIST_MAX - 1;
1465
1466 spin_lock(&oh->oh_lock);
1467 oh->oh_buckets[value]++;
1468 spin_unlock(&oh->oh_lock);
1469}
1470EXPORT_SYMBOL(lprocfs_oh_tally);
1471
1472void lprocfs_oh_tally_log2(struct obd_histogram *oh, unsigned int value)
1473{
1474 unsigned int val;
1475
1476 for (val = 0; ((1 << val) < value) && (val <= OBD_HIST_MAX); val++)
1477 ;
1478
1479 lprocfs_oh_tally(oh, val);
1480}
1481EXPORT_SYMBOL(lprocfs_oh_tally_log2);
1482
1483unsigned long lprocfs_oh_sum(struct obd_histogram *oh)
1484{
1485 unsigned long ret = 0;
1486 int i;
1487
1488 for (i = 0; i < OBD_HIST_MAX; i++)
1489 ret += oh->oh_buckets[i];
1490 return ret;
1491}
1492EXPORT_SYMBOL(lprocfs_oh_sum);
1493
1494void lprocfs_oh_clear(struct obd_histogram *oh)
1495{
1496 spin_lock(&oh->oh_lock);
1497 memset(oh->oh_buckets, 0, sizeof(oh->oh_buckets));
1498 spin_unlock(&oh->oh_lock);
1499}
1500EXPORT_SYMBOL(lprocfs_oh_clear);
1501
1502static ssize_t lustre_attr_show(struct kobject *kobj,
1503 struct attribute *attr, char *buf)
1504{
1505 struct lustre_attr *a = container_of(attr, struct lustre_attr, attr);
1506
1507 return a->show ? a->show(kobj, attr, buf) : 0;
1508}
1509
1510static ssize_t lustre_attr_store(struct kobject *kobj, struct attribute *attr,
1511 const char *buf, size_t len)
1512{
1513 struct lustre_attr *a = container_of(attr, struct lustre_attr, attr);
1514
1515 return a->store ? a->store(kobj, attr, buf, len) : len;
1516}
1517
1518const struct sysfs_ops lustre_sysfs_ops = {
1519 .show = lustre_attr_show,
1520 .store = lustre_attr_store,
1521};
1522EXPORT_SYMBOL_GPL(lustre_sysfs_ops);
1523
