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