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Merge remote-tracking branch 'regulator/topic/tps65910' into regulator-next
[deliverable/linux.git] / drivers / staging / lustre / lustre / obdclass / lprocfs_status.c
1 /*
2 * GPL HEADER START
3 *
4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 only,
8 * as published by the Free Software Foundation.
9 *
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License version 2 for more details (a copy is included
14 * in the LICENSE file that accompanied this code).
15 *
16 * You should have received a copy of the GNU General Public License
17 * version 2 along with this program; If not, see
18 * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
19 *
20 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
21 * CA 95054 USA or visit www.sun.com if you need additional information or
22 * have any questions.
23 *
24 * GPL HEADER END
25 */
26 /*
27 * Copyright (c) 2002, 2010, Oracle and/or its affiliates. All rights reserved.
28 * Use is subject to license terms.
29 *
30 * Copyright (c) 2011, 2012, Intel Corporation.
31 */
32 /*
33 * This file is part of Lustre, http://www.lustre.org/
34 * Lustre is a trademark of Sun Microsystems, Inc.
35 *
36 * lustre/obdclass/lprocfs_status.c
37 *
38 * Author: Hariharan Thantry <thantry@users.sourceforge.net>
39 */
40
41 #define DEBUG_SUBSYSTEM S_CLASS
42
43
44 #include <obd_class.h>
45 #include <lprocfs_status.h>
46 #include <lustre/lustre_idl.h>
47 #include <linux/seq_file.h>
48
49 #if defined(LPROCFS)
50
51 static int lprocfs_no_percpu_stats = 0;
52 CFS_MODULE_PARM(lprocfs_no_percpu_stats, "i", int, 0644,
53 "Do not alloc percpu data for lprocfs stats");
54
55 #define MAX_STRING_SIZE 128
56
57 int lprocfs_single_release(struct inode *inode, struct file *file)
58 {
59 return single_release(inode, file);
60 }
61 EXPORT_SYMBOL(lprocfs_single_release);
62
63 int lprocfs_seq_release(struct inode *inode, struct file *file)
64 {
65 return seq_release(inode, file);
66 }
67 EXPORT_SYMBOL(lprocfs_seq_release);
68
69 /* lprocfs API calls */
70
71 struct proc_dir_entry *lprocfs_add_simple(struct proc_dir_entry *root,
72 char *name, void *data,
73 struct file_operations *fops)
74 {
75 struct proc_dir_entry *proc;
76 umode_t mode = 0;
77
78 if (root == NULL || name == NULL || fops == NULL)
79 return ERR_PTR(-EINVAL);
80
81 if (fops->read)
82 mode = 0444;
83 if (fops->write)
84 mode |= 0200;
85 proc = proc_create_data(name, mode, root, fops, data);
86 if (!proc) {
87 CERROR("LprocFS: No memory to create /proc entry %s", name);
88 return ERR_PTR(-ENOMEM);
89 }
90 return proc;
91 }
92 EXPORT_SYMBOL(lprocfs_add_simple);
93
94 struct proc_dir_entry *lprocfs_add_symlink(const char *name,
95 struct proc_dir_entry *parent, const char *format, ...)
96 {
97 struct proc_dir_entry *entry;
98 char *dest;
99 va_list ap;
100
101 if (parent == NULL || format == NULL)
102 return NULL;
103
104 OBD_ALLOC_WAIT(dest, MAX_STRING_SIZE + 1);
105 if (dest == NULL)
106 return NULL;
107
108 va_start(ap, format);
109 vsnprintf(dest, MAX_STRING_SIZE, format, ap);
110 va_end(ap);
111
112 entry = proc_symlink(name, parent, dest);
113 if (entry == NULL)
114 CERROR("LprocFS: Could not create symbolic link from %s to %s",
115 name, dest);
116
117 OBD_FREE(dest, MAX_STRING_SIZE + 1);
118 return entry;
119 }
120 EXPORT_SYMBOL(lprocfs_add_symlink);
121
122 static struct file_operations lprocfs_generic_fops = { };
123
124 /**
125 * Add /proc entries.
126 *
127 * \param root [in] The parent proc entry on which new entry will be added.
128 * \param list [in] Array of proc entries to be added.
129 * \param data [in] The argument to be passed when entries read/write routines
130 * are called through /proc file.
131 *
132 * \retval 0 on success
133 * < 0 on error
134 */
135 int lprocfs_add_vars(struct proc_dir_entry *root, struct lprocfs_vars *list,
136 void *data)
137 {
138 if (root == NULL || list == NULL)
139 return -EINVAL;
140
141 while (list->name != NULL) {
142 struct proc_dir_entry *proc;
143 umode_t mode = 0;
144
145 if (list->proc_mode != 0000) {
146 mode = list->proc_mode;
147 } else if (list->fops) {
148 if (list->fops->read)
149 mode = 0444;
150 if (list->fops->write)
151 mode |= 0200;
152 }
153 proc = proc_create_data(list->name, mode, root,
154 list->fops ?: &lprocfs_generic_fops,
155 list->data ?: data);
156 if (proc == NULL)
157 return -ENOMEM;
158 list++;
159 }
160 return 0;
161 }
162 EXPORT_SYMBOL(lprocfs_add_vars);
163
164 void lprocfs_remove(struct proc_dir_entry **rooth)
165 {
166 proc_remove(*rooth);
167 *rooth = NULL;
168 }
169 EXPORT_SYMBOL(lprocfs_remove);
170
171 void lprocfs_remove_proc_entry(const char *name, struct proc_dir_entry *parent)
172 {
173 LASSERT(parent != NULL);
174 remove_proc_entry(name, parent);
175 }
176 EXPORT_SYMBOL(lprocfs_remove_proc_entry);
177
178 struct proc_dir_entry *lprocfs_register(const char *name,
179 struct proc_dir_entry *parent,
180 struct lprocfs_vars *list, void *data)
181 {
182 struct proc_dir_entry *entry;
183
184 entry = proc_mkdir(name, parent);
185 if (entry == NULL)
186 GOTO(out, entry = ERR_PTR(-ENOMEM));
187
188 if (list != NULL) {
189 int rc = lprocfs_add_vars(entry, list, data);
190 if (rc != 0) {
191 lprocfs_remove(&entry);
192 entry = ERR_PTR(rc);
193 }
194 }
195 out:
196 return entry;
197 }
198 EXPORT_SYMBOL(lprocfs_register);
199
200 /* Generic callbacks */
201 int lprocfs_rd_uint(struct seq_file *m, void *data)
202 {
203 return seq_printf(m, "%u\n", *(unsigned int *)data);
204 }
205 EXPORT_SYMBOL(lprocfs_rd_uint);
206
207 int lprocfs_wr_uint(struct file *file, const char __user *buffer,
208 unsigned long count, void *data)
209 {
210 unsigned *p = data;
211 char dummy[MAX_STRING_SIZE + 1], *end;
212 unsigned long tmp;
213
214 dummy[MAX_STRING_SIZE] = '\0';
215 if (copy_from_user(dummy, buffer, MAX_STRING_SIZE))
216 return -EFAULT;
217
218 tmp = simple_strtoul(dummy, &end, 0);
219 if (dummy == end)
220 return -EINVAL;
221
222 *p = (unsigned int)tmp;
223 return count;
224 }
225 EXPORT_SYMBOL(lprocfs_wr_uint);
226
227 int lprocfs_rd_u64(struct seq_file *m, void *data)
228 {
229 return seq_printf(m, LPU64"\n", *(__u64 *)data);
230 }
231 EXPORT_SYMBOL(lprocfs_rd_u64);
232
233 int lprocfs_rd_atomic(struct seq_file *m, void *data)
234 {
235 atomic_t *atom = data;
236 LASSERT(atom != NULL);
237 return seq_printf(m, "%d\n", atomic_read(atom));
238 }
239 EXPORT_SYMBOL(lprocfs_rd_atomic);
240
241 int lprocfs_wr_atomic(struct file *file, const char __user *buffer,
242 unsigned long count, void *data)
243 {
244 atomic_t *atm = data;
245 int val = 0;
246 int rc;
247
248 rc = lprocfs_write_helper(buffer, count, &val);
249 if (rc < 0)
250 return rc;
251
252 if (val <= 0)
253 return -ERANGE;
254
255 atomic_set(atm, val);
256 return count;
257 }
258 EXPORT_SYMBOL(lprocfs_wr_atomic);
259
260 int lprocfs_rd_uuid(struct seq_file *m, void *data)
261 {
262 struct obd_device *obd = data;
263
264 LASSERT(obd != NULL);
265 return seq_printf(m, "%s\n", obd->obd_uuid.uuid);
266 }
267 EXPORT_SYMBOL(lprocfs_rd_uuid);
268
269 int lprocfs_rd_name(struct seq_file *m, void *data)
270 {
271 struct obd_device *dev = data;
272
273 LASSERT(dev != NULL);
274 return seq_printf(m, "%s\n", dev->obd_name);
275 }
276 EXPORT_SYMBOL(lprocfs_rd_name);
277
278 int lprocfs_rd_blksize(struct seq_file *m, void *data)
279 {
280 struct obd_device *obd = data;
281 struct obd_statfs osfs;
282 int rc = obd_statfs(NULL, obd->obd_self_export, &osfs,
283 cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS),
284 OBD_STATFS_NODELAY);
285 if (!rc)
286 rc = seq_printf(m, "%u\n", osfs.os_bsize);
287 return rc;
288 }
289 EXPORT_SYMBOL(lprocfs_rd_blksize);
290
291 int lprocfs_rd_kbytestotal(struct seq_file *m, void *data)
292 {
293 struct obd_device *obd = data;
294 struct obd_statfs osfs;
295 int rc = obd_statfs(NULL, obd->obd_self_export, &osfs,
296 cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS),
297 OBD_STATFS_NODELAY);
298 if (!rc) {
299 __u32 blk_size = osfs.os_bsize >> 10;
300 __u64 result = osfs.os_blocks;
301
302 while (blk_size >>= 1)
303 result <<= 1;
304
305 rc = seq_printf(m, LPU64"\n", result);
306 }
307 return rc;
308 }
309 EXPORT_SYMBOL(lprocfs_rd_kbytestotal);
310
311 int lprocfs_rd_kbytesfree(struct seq_file *m, void *data)
312 {
313 struct obd_device *obd = data;
314 struct obd_statfs osfs;
315 int rc = obd_statfs(NULL, obd->obd_self_export, &osfs,
316 cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS),
317 OBD_STATFS_NODELAY);
318 if (!rc) {
319 __u32 blk_size = osfs.os_bsize >> 10;
320 __u64 result = osfs.os_bfree;
321
322 while (blk_size >>= 1)
323 result <<= 1;
324
325 rc = seq_printf(m, LPU64"\n", result);
326 }
327 return rc;
328 }
329 EXPORT_SYMBOL(lprocfs_rd_kbytesfree);
330
331 int lprocfs_rd_kbytesavail(struct seq_file *m, void *data)
332 {
333 struct obd_device *obd = data;
334 struct obd_statfs osfs;
335 int rc = obd_statfs(NULL, obd->obd_self_export, &osfs,
336 cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS),
337 OBD_STATFS_NODELAY);
338 if (!rc) {
339 __u32 blk_size = osfs.os_bsize >> 10;
340 __u64 result = osfs.os_bavail;
341
342 while (blk_size >>= 1)
343 result <<= 1;
344
345 rc = seq_printf(m, LPU64"\n", result);
346 }
347 return rc;
348 }
349 EXPORT_SYMBOL(lprocfs_rd_kbytesavail);
350
351 int lprocfs_rd_filestotal(struct seq_file *m, void *data)
352 {
353 struct obd_device *obd = data;
354 struct obd_statfs osfs;
355 int rc = obd_statfs(NULL, obd->obd_self_export, &osfs,
356 cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS),
357 OBD_STATFS_NODELAY);
358 if (!rc)
359 rc = seq_printf(m, LPU64"\n", osfs.os_files);
360
361 return rc;
362 }
363 EXPORT_SYMBOL(lprocfs_rd_filestotal);
364
365 int lprocfs_rd_filesfree(struct seq_file *m, void *data)
366 {
367 struct obd_device *obd = data;
368 struct obd_statfs osfs;
369 int rc = obd_statfs(NULL, obd->obd_self_export, &osfs,
370 cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS),
371 OBD_STATFS_NODELAY);
372 if (!rc)
373 rc = seq_printf(m, LPU64"\n", osfs.os_ffree);
374 return rc;
375 }
376 EXPORT_SYMBOL(lprocfs_rd_filesfree);
377
378 int lprocfs_rd_server_uuid(struct seq_file *m, void *data)
379 {
380 struct obd_device *obd = data;
381 struct obd_import *imp;
382 char *imp_state_name = NULL;
383 int rc = 0;
384
385 LASSERT(obd != NULL);
386 LPROCFS_CLIMP_CHECK(obd);
387 imp = obd->u.cli.cl_import;
388 imp_state_name = ptlrpc_import_state_name(imp->imp_state);
389 rc = seq_printf(m, "%s\t%s%s\n", obd2cli_tgt(obd), imp_state_name,
390 imp->imp_deactive ? "\tDEACTIVATED" : "");
391
392 LPROCFS_CLIMP_EXIT(obd);
393 return rc;
394 }
395 EXPORT_SYMBOL(lprocfs_rd_server_uuid);
396
397 int lprocfs_rd_conn_uuid(struct seq_file *m, void *data)
398 {
399 struct obd_device *obd = data;
400 struct ptlrpc_connection *conn;
401 int rc = 0;
402
403 LASSERT(obd != NULL);
404
405 LPROCFS_CLIMP_CHECK(obd);
406 conn = obd->u.cli.cl_import->imp_connection;
407 if (conn && obd->u.cli.cl_import)
408 rc = seq_printf(m, "%s\n", conn->c_remote_uuid.uuid);
409 else
410 rc = seq_printf(m, "%s\n", "<none>");
411
412 LPROCFS_CLIMP_EXIT(obd);
413 return rc;
414 }
415 EXPORT_SYMBOL(lprocfs_rd_conn_uuid);
416
417 /** add up per-cpu counters */
418 void lprocfs_stats_collect(struct lprocfs_stats *stats, int idx,
419 struct lprocfs_counter *cnt)
420 {
421 unsigned int num_entry;
422 struct lprocfs_counter *percpu_cntr;
423 struct lprocfs_counter_header *cntr_header;
424 int i;
425 unsigned long flags = 0;
426
427 memset(cnt, 0, sizeof(*cnt));
428
429 if (stats == NULL) {
430 /* set count to 1 to avoid divide-by-zero errs in callers */
431 cnt->lc_count = 1;
432 return;
433 }
434
435 cnt->lc_min = LC_MIN_INIT;
436
437 num_entry = lprocfs_stats_lock(stats, LPROCFS_GET_NUM_CPU, &flags);
438
439 for (i = 0; i < num_entry; i++) {
440 if (stats->ls_percpu[i] == NULL)
441 continue;
442 cntr_header = &stats->ls_cnt_header[idx];
443 percpu_cntr = lprocfs_stats_counter_get(stats, i, idx);
444
445 cnt->lc_count += percpu_cntr->lc_count;
446 cnt->lc_sum += percpu_cntr->lc_sum;
447 if (percpu_cntr->lc_min < cnt->lc_min)
448 cnt->lc_min = percpu_cntr->lc_min;
449 if (percpu_cntr->lc_max > cnt->lc_max)
450 cnt->lc_max = percpu_cntr->lc_max;
451 cnt->lc_sumsquare += percpu_cntr->lc_sumsquare;
452 }
453
454 lprocfs_stats_unlock(stats, LPROCFS_GET_NUM_CPU, &flags);
455 }
456 EXPORT_SYMBOL(lprocfs_stats_collect);
457
458 /**
459 * Append a space separated list of current set flags to str.
460 */
461 #define flag2str(flag, first) \
462 do { \
463 if (imp->imp_##flag) \
464 seq_printf(m, "%s" #flag, first ? "" : ", "); \
465 } while (0)
466 static int obd_import_flags2str(struct obd_import *imp, struct seq_file *m)
467 {
468 bool first = true;
469
470 if (imp->imp_obd->obd_no_recov) {
471 seq_printf(m, "no_recov");
472 first = false;
473 }
474
475 flag2str(invalid, first);
476 first = false;
477 flag2str(deactive, first);
478 flag2str(replayable, first);
479 flag2str(pingable, first);
480 return 0;
481 }
482 #undef flags2str
483
484 static const char *obd_connect_names[] = {
485 "read_only",
486 "lov_index",
487 "unused",
488 "write_grant",
489 "server_lock",
490 "version",
491 "request_portal",
492 "acl",
493 "xattr",
494 "create_on_write",
495 "truncate_lock",
496 "initial_transno",
497 "inode_bit_locks",
498 "join_file(obsolete)",
499 "getattr_by_fid",
500 "no_oh_for_devices",
501 "remote_client",
502 "remote_client_by_force",
503 "max_byte_per_rpc",
504 "64bit_qdata",
505 "mds_capability",
506 "oss_capability",
507 "early_lock_cancel",
508 "som",
509 "adaptive_timeouts",
510 "lru_resize",
511 "mds_mds_connection",
512 "real_conn",
513 "change_qunit_size",
514 "alt_checksum_algorithm",
515 "fid_is_enabled",
516 "version_recovery",
517 "pools",
518 "grant_shrink",
519 "skip_orphan",
520 "large_ea",
521 "full20",
522 "layout_lock",
523 "64bithash",
524 "object_max_bytes",
525 "imp_recov",
526 "jobstats",
527 "umask",
528 "einprogress",
529 "grant_param",
530 "flock_owner",
531 "lvb_type",
532 "nanoseconds_times",
533 "lightweight_conn",
534 "short_io",
535 "pingless",
536 "unknown",
537 NULL
538 };
539
540 static void obd_connect_seq_flags2str(struct seq_file *m, __u64 flags, char *sep)
541 {
542 __u64 mask = 1;
543 int i;
544 bool first = true;
545
546 for (i = 0; obd_connect_names[i] != NULL; i++, mask <<= 1) {
547 if (flags & mask) {
548 seq_printf(m, "%s%s",
549 first ? sep : "", obd_connect_names[i]);
550 first = false;
551 }
552 }
553 if (flags & ~(mask - 1))
554 seq_printf(m, "%sunknown flags "LPX64,
555 first ? sep : "", flags & ~(mask - 1));
556 }
557
558 int obd_connect_flags2str(char *page, int count, __u64 flags, char *sep)
559 {
560 __u64 mask = 1;
561 int i, ret = 0;
562
563 for (i = 0; obd_connect_names[i] != NULL; i++, mask <<= 1) {
564 if (flags & mask)
565 ret += snprintf(page + ret, count - ret, "%s%s",
566 ret ? sep : "", obd_connect_names[i]);
567 }
568 if (flags & ~(mask - 1))
569 ret += snprintf(page + ret, count - ret,
570 "%sunknown flags "LPX64,
571 ret ? sep : "", flags & ~(mask - 1));
572 return ret;
573 }
574 EXPORT_SYMBOL(obd_connect_flags2str);
575
576 int lprocfs_rd_import(struct seq_file *m, void *data)
577 {
578 struct lprocfs_counter ret;
579 struct lprocfs_counter_header *header;
580 struct obd_device *obd = (struct obd_device *)data;
581 struct obd_import *imp;
582 struct obd_import_conn *conn;
583 int j;
584 int k;
585 int rw = 0;
586
587 LASSERT(obd != NULL);
588 LPROCFS_CLIMP_CHECK(obd);
589 imp = obd->u.cli.cl_import;
590
591 seq_printf(m,
592 "import:\n"
593 " name: %s\n"
594 " target: %s\n"
595 " state: %s\n"
596 " instance: %u\n"
597 " connect_flags: [",
598 obd->obd_name,
599 obd2cli_tgt(obd),
600 ptlrpc_import_state_name(imp->imp_state),
601 imp->imp_connect_data.ocd_instance);
602 obd_connect_seq_flags2str(m, imp->imp_connect_data.ocd_connect_flags, ", ");
603 seq_printf(m,
604 "]\n"
605 " import_flags: [");
606 obd_import_flags2str(imp, m);
607
608 seq_printf(m,
609 "]\n"
610 " connection:\n"
611 " failover_nids: [");
612 spin_lock(&imp->imp_lock);
613 j = 0;
614 list_for_each_entry(conn, &imp->imp_conn_list, oic_item) {
615 seq_printf(m, "%s%s", j ? ", " : "",
616 libcfs_nid2str(conn->oic_conn->c_peer.nid));
617 j++;
618 }
619 seq_printf(m,
620 "]\n"
621 " current_connection: %s\n"
622 " connection_attempts: %u\n"
623 " generation: %u\n"
624 " in-progress_invalidations: %u\n",
625 imp->imp_connection == NULL ? "<none>" :
626 libcfs_nid2str(imp->imp_connection->c_peer.nid),
627 imp->imp_conn_cnt,
628 imp->imp_generation,
629 atomic_read(&imp->imp_inval_count));
630 spin_unlock(&imp->imp_lock);
631
632 if (obd->obd_svc_stats == NULL)
633 goto out_climp;
634
635 header = &obd->obd_svc_stats->ls_cnt_header[PTLRPC_REQWAIT_CNTR];
636 lprocfs_stats_collect(obd->obd_svc_stats, PTLRPC_REQWAIT_CNTR, &ret);
637 if (ret.lc_count != 0) {
638 /* first argument to do_div MUST be __u64 */
639 __u64 sum = ret.lc_sum;
640 do_div(sum, ret.lc_count);
641 ret.lc_sum = sum;
642 } else
643 ret.lc_sum = 0;
644 seq_printf(m,
645 " rpcs:\n"
646 " inflight: %u\n"
647 " unregistering: %u\n"
648 " timeouts: %u\n"
649 " avg_waittime: "LPU64" %s\n",
650 atomic_read(&imp->imp_inflight),
651 atomic_read(&imp->imp_unregistering),
652 atomic_read(&imp->imp_timeouts),
653 ret.lc_sum, header->lc_units);
654
655 k = 0;
656 for(j = 0; j < IMP_AT_MAX_PORTALS; j++) {
657 if (imp->imp_at.iat_portal[j] == 0)
658 break;
659 k = max_t(unsigned int, k,
660 at_get(&imp->imp_at.iat_service_estimate[j]));
661 }
662 seq_printf(m,
663 " service_estimates:\n"
664 " services: %u sec\n"
665 " network: %u sec\n",
666 k,
667 at_get(&imp->imp_at.iat_net_latency));
668
669 seq_printf(m,
670 " transactions:\n"
671 " last_replay: "LPU64"\n"
672 " peer_committed: "LPU64"\n"
673 " last_checked: "LPU64"\n",
674 imp->imp_last_replay_transno,
675 imp->imp_peer_committed_transno,
676 imp->imp_last_transno_checked);
677
678 /* avg data rates */
679 for (rw = 0; rw <= 1; rw++) {
680 lprocfs_stats_collect(obd->obd_svc_stats,
681 PTLRPC_LAST_CNTR + BRW_READ_BYTES + rw,
682 &ret);
683 if (ret.lc_sum > 0 && ret.lc_count > 0) {
684 /* first argument to do_div MUST be __u64 */
685 __u64 sum = ret.lc_sum;
686 do_div(sum, ret.lc_count);
687 ret.lc_sum = sum;
688 seq_printf(m,
689 " %s_data_averages:\n"
690 " bytes_per_rpc: "LPU64"\n",
691 rw ? "write" : "read",
692 ret.lc_sum);
693 }
694 k = (int)ret.lc_sum;
695 j = opcode_offset(OST_READ + rw) + EXTRA_MAX_OPCODES;
696 header = &obd->obd_svc_stats->ls_cnt_header[j];
697 lprocfs_stats_collect(obd->obd_svc_stats, j, &ret);
698 if (ret.lc_sum > 0 && ret.lc_count != 0) {
699 /* first argument to do_div MUST be __u64 */
700 __u64 sum = ret.lc_sum;
701 do_div(sum, ret.lc_count);
702 ret.lc_sum = sum;
703 seq_printf(m,
704 " %s_per_rpc: "LPU64"\n",
705 header->lc_units, ret.lc_sum);
706 j = (int)ret.lc_sum;
707 if (j > 0)
708 seq_printf(m,
709 " MB_per_sec: %u.%.02u\n",
710 k / j, (100 * k / j) % 100);
711 }
712 }
713
714 out_climp:
715 LPROCFS_CLIMP_EXIT(obd);
716 return 0;
717 }
718 EXPORT_SYMBOL(lprocfs_rd_import);
719
720 int lprocfs_rd_state(struct seq_file *m, void *data)
721 {
722 struct obd_device *obd = (struct obd_device *)data;
723 struct obd_import *imp;
724 int j, k;
725
726 LASSERT(obd != NULL);
727 LPROCFS_CLIMP_CHECK(obd);
728 imp = obd->u.cli.cl_import;
729
730 seq_printf(m, "current_state: %s\n",
731 ptlrpc_import_state_name(imp->imp_state));
732 seq_printf(m, "state_history:\n");
733 k = imp->imp_state_hist_idx;
734 for (j = 0; j < IMP_STATE_HIST_LEN; j++) {
735 struct import_state_hist *ish =
736 &imp->imp_state_hist[(k + j) % IMP_STATE_HIST_LEN];
737 if (ish->ish_state == 0)
738 continue;
739 seq_printf(m, " - ["CFS_TIME_T", %s]\n",
740 ish->ish_time,
741 ptlrpc_import_state_name(ish->ish_state));
742 }
743
744 LPROCFS_CLIMP_EXIT(obd);
745 return 0;
746 }
747 EXPORT_SYMBOL(lprocfs_rd_state);
748
749 int lprocfs_at_hist_helper(struct seq_file *m, struct adaptive_timeout *at)
750 {
751 int i;
752 for (i = 0; i < AT_BINS; i++)
753 seq_printf(m, "%3u ", at->at_hist[i]);
754 seq_printf(m, "\n");
755 return 0;
756 }
757 EXPORT_SYMBOL(lprocfs_at_hist_helper);
758
759 /* See also ptlrpc_lprocfs_rd_timeouts */
760 int lprocfs_rd_timeouts(struct seq_file *m, void *data)
761 {
762 struct obd_device *obd = (struct obd_device *)data;
763 struct obd_import *imp;
764 unsigned int cur, worst;
765 time_t now, worstt;
766 struct dhms ts;
767 int i;
768
769 LASSERT(obd != NULL);
770 LPROCFS_CLIMP_CHECK(obd);
771 imp = obd->u.cli.cl_import;
772
773 now = cfs_time_current_sec();
774
775 /* Some network health info for kicks */
776 s2dhms(&ts, now - imp->imp_last_reply_time);
777 seq_printf(m, "%-10s : %ld, "DHMS_FMT" ago\n",
778 "last reply", imp->imp_last_reply_time, DHMS_VARS(&ts));
779
780 cur = at_get(&imp->imp_at.iat_net_latency);
781 worst = imp->imp_at.iat_net_latency.at_worst_ever;
782 worstt = imp->imp_at.iat_net_latency.at_worst_time;
783 s2dhms(&ts, now - worstt);
784 seq_printf(m, "%-10s : cur %3u worst %3u (at %ld, "DHMS_FMT" ago) ",
785 "network", cur, worst, worstt, DHMS_VARS(&ts));
786 lprocfs_at_hist_helper(m, &imp->imp_at.iat_net_latency);
787
788 for(i = 0; i < IMP_AT_MAX_PORTALS; i++) {
789 if (imp->imp_at.iat_portal[i] == 0)
790 break;
791 cur = at_get(&imp->imp_at.iat_service_estimate[i]);
792 worst = imp->imp_at.iat_service_estimate[i].at_worst_ever;
793 worstt = imp->imp_at.iat_service_estimate[i].at_worst_time;
794 s2dhms(&ts, now - worstt);
795 seq_printf(m, "portal %-2d : cur %3u worst %3u (at %ld, "
796 DHMS_FMT" ago) ", imp->imp_at.iat_portal[i],
797 cur, worst, worstt, DHMS_VARS(&ts));
798 lprocfs_at_hist_helper(m, &imp->imp_at.iat_service_estimate[i]);
799 }
800
801 LPROCFS_CLIMP_EXIT(obd);
802 return 0;
803 }
804 EXPORT_SYMBOL(lprocfs_rd_timeouts);
805
806 int lprocfs_rd_connect_flags(struct seq_file *m, void *data)
807 {
808 struct obd_device *obd = data;
809 __u64 flags;
810
811 LPROCFS_CLIMP_CHECK(obd);
812 flags = obd->u.cli.cl_import->imp_connect_data.ocd_connect_flags;
813 seq_printf(m, "flags="LPX64"\n", flags);
814 obd_connect_seq_flags2str(m, flags, "\n");
815 seq_printf(m, "\n");
816 LPROCFS_CLIMP_EXIT(obd);
817 return 0;
818 }
819 EXPORT_SYMBOL(lprocfs_rd_connect_flags);
820
821 int lprocfs_rd_num_exports(struct seq_file *m, void *data)
822 {
823 struct obd_device *obd = data;
824
825 LASSERT(obd != NULL);
826 return seq_printf(m, "%u\n", obd->obd_num_exports);
827 }
828 EXPORT_SYMBOL(lprocfs_rd_num_exports);
829
830 int lprocfs_rd_numrefs(struct seq_file *m, void *data)
831 {
832 struct obd_type *class = (struct obd_type*) data;
833
834 LASSERT(class != NULL);
835 return seq_printf(m, "%d\n", class->typ_refcnt);
836 }
837 EXPORT_SYMBOL(lprocfs_rd_numrefs);
838
839 int lprocfs_obd_setup(struct obd_device *obd, struct lprocfs_vars *list)
840 {
841 int rc = 0;
842
843 LASSERT(obd != NULL);
844 LASSERT(obd->obd_magic == OBD_DEVICE_MAGIC);
845 LASSERT(obd->obd_type->typ_procroot != NULL);
846
847 obd->obd_proc_entry = lprocfs_register(obd->obd_name,
848 obd->obd_type->typ_procroot,
849 list, obd);
850 if (IS_ERR(obd->obd_proc_entry)) {
851 rc = PTR_ERR(obd->obd_proc_entry);
852 CERROR("error %d setting up lprocfs for %s\n",rc,obd->obd_name);
853 obd->obd_proc_entry = NULL;
854 }
855 return rc;
856 }
857 EXPORT_SYMBOL(lprocfs_obd_setup);
858
859 int lprocfs_obd_cleanup(struct obd_device *obd)
860 {
861 if (!obd)
862 return -EINVAL;
863 if (obd->obd_proc_exports_entry) {
864 /* Should be no exports left */
865 lprocfs_remove(&obd->obd_proc_exports_entry);
866 obd->obd_proc_exports_entry = NULL;
867 }
868 if (obd->obd_proc_entry) {
869 lprocfs_remove(&obd->obd_proc_entry);
870 obd->obd_proc_entry = NULL;
871 }
872 return 0;
873 }
874 EXPORT_SYMBOL(lprocfs_obd_cleanup);
875
876 static void lprocfs_free_client_stats(struct nid_stat *client_stat)
877 {
878 CDEBUG(D_CONFIG, "stat %p - data %p/%p\n", client_stat,
879 client_stat->nid_proc, client_stat->nid_stats);
880
881 LASSERTF(atomic_read(&client_stat->nid_exp_ref_count) == 0,
882 "nid %s:count %d\n", libcfs_nid2str(client_stat->nid),
883 atomic_read(&client_stat->nid_exp_ref_count));
884
885 if (client_stat->nid_proc)
886 lprocfs_remove(&client_stat->nid_proc);
887
888 if (client_stat->nid_stats)
889 lprocfs_free_stats(&client_stat->nid_stats);
890
891 if (client_stat->nid_ldlm_stats)
892 lprocfs_free_stats(&client_stat->nid_ldlm_stats);
893
894 OBD_FREE_PTR(client_stat);
895 return;
896
897 }
898
899 void lprocfs_free_per_client_stats(struct obd_device *obd)
900 {
901 cfs_hash_t *hash = obd->obd_nid_stats_hash;
902 struct nid_stat *stat;
903
904 /* we need extra list - because hash_exit called to early */
905 /* not need locking because all clients is died */
906 while (!list_empty(&obd->obd_nid_stats)) {
907 stat = list_entry(obd->obd_nid_stats.next,
908 struct nid_stat, nid_list);
909 list_del_init(&stat->nid_list);
910 cfs_hash_del(hash, &stat->nid, &stat->nid_hash);
911 lprocfs_free_client_stats(stat);
912 }
913 }
914 EXPORT_SYMBOL(lprocfs_free_per_client_stats);
915
916 struct lprocfs_stats *lprocfs_alloc_stats(unsigned int num,
917 enum lprocfs_stats_flags flags)
918 {
919 struct lprocfs_stats *stats;
920 unsigned int num_entry;
921 unsigned int percpusize = 0;
922 int i;
923
924 if (num == 0)
925 return NULL;
926
927 if (lprocfs_no_percpu_stats != 0)
928 flags |= LPROCFS_STATS_FLAG_NOPERCPU;
929
930 if (flags & LPROCFS_STATS_FLAG_NOPERCPU)
931 num_entry = 1;
932 else
933 num_entry = num_possible_cpus();
934
935 /* alloc percpu pointers for all possible cpu slots */
936 LIBCFS_ALLOC(stats, offsetof(typeof(*stats), ls_percpu[num_entry]));
937 if (stats == NULL)
938 return NULL;
939
940 stats->ls_num = num;
941 stats->ls_flags = flags;
942 spin_lock_init(&stats->ls_lock);
943
944 /* alloc num of counter headers */
945 LIBCFS_ALLOC(stats->ls_cnt_header,
946 stats->ls_num * sizeof(struct lprocfs_counter_header));
947 if (stats->ls_cnt_header == NULL)
948 goto fail;
949
950 if ((flags & LPROCFS_STATS_FLAG_NOPERCPU) != 0) {
951 /* contains only one set counters */
952 percpusize = lprocfs_stats_counter_size(stats);
953 LIBCFS_ALLOC_ATOMIC(stats->ls_percpu[0], percpusize);
954 if (stats->ls_percpu[0] == NULL)
955 goto fail;
956 stats->ls_biggest_alloc_num = 1;
957 } else if ((flags & LPROCFS_STATS_FLAG_IRQ_SAFE) != 0) {
958 /* alloc all percpu data, currently only obd_memory use this */
959 for (i = 0; i < num_entry; ++i)
960 if (lprocfs_stats_alloc_one(stats, i) < 0)
961 goto fail;
962 }
963
964 return stats;
965
966 fail:
967 lprocfs_free_stats(&stats);
968 return NULL;
969 }
970 EXPORT_SYMBOL(lprocfs_alloc_stats);
971
972 void lprocfs_free_stats(struct lprocfs_stats **statsh)
973 {
974 struct lprocfs_stats *stats = *statsh;
975 unsigned int num_entry;
976 unsigned int percpusize;
977 unsigned int i;
978
979 if (stats == NULL || stats->ls_num == 0)
980 return;
981 *statsh = NULL;
982
983 if (stats->ls_flags & LPROCFS_STATS_FLAG_NOPERCPU)
984 num_entry = 1;
985 else
986 num_entry = num_possible_cpus();
987
988 percpusize = lprocfs_stats_counter_size(stats);
989 for (i = 0; i < num_entry; i++)
990 if (stats->ls_percpu[i] != NULL)
991 LIBCFS_FREE(stats->ls_percpu[i], percpusize);
992 if (stats->ls_cnt_header != NULL)
993 LIBCFS_FREE(stats->ls_cnt_header, stats->ls_num *
994 sizeof(struct lprocfs_counter_header));
995 LIBCFS_FREE(stats, offsetof(typeof(*stats), ls_percpu[num_entry]));
996 }
997 EXPORT_SYMBOL(lprocfs_free_stats);
998
999 void lprocfs_clear_stats(struct lprocfs_stats *stats)
1000 {
1001 struct lprocfs_counter *percpu_cntr;
1002 struct lprocfs_counter_header *header;
1003 int i;
1004 int j;
1005 unsigned int num_entry;
1006 unsigned long flags = 0;
1007
1008 num_entry = lprocfs_stats_lock(stats, LPROCFS_GET_NUM_CPU, &flags);
1009
1010 for (i = 0; i < num_entry; i++) {
1011 if (stats->ls_percpu[i] == NULL)
1012 continue;
1013 for (j = 0; j < stats->ls_num; j++) {
1014 header = &stats->ls_cnt_header[j];
1015 percpu_cntr = lprocfs_stats_counter_get(stats, i, j);
1016 percpu_cntr->lc_count = 0;
1017 percpu_cntr->lc_min = LC_MIN_INIT;
1018 percpu_cntr->lc_max = 0;
1019 percpu_cntr->lc_sumsquare = 0;
1020 percpu_cntr->lc_sum = 0;
1021 if (stats->ls_flags & LPROCFS_STATS_FLAG_IRQ_SAFE)
1022 percpu_cntr->lc_sum_irq = 0;
1023 }
1024 }
1025
1026 lprocfs_stats_unlock(stats, LPROCFS_GET_NUM_CPU, &flags);
1027 }
1028 EXPORT_SYMBOL(lprocfs_clear_stats);
1029
1030 static ssize_t lprocfs_stats_seq_write(struct file *file,
1031 const char __user *buf,
1032 size_t len, loff_t *off)
1033 {
1034 struct seq_file *seq = file->private_data;
1035 struct lprocfs_stats *stats = seq->private;
1036
1037 lprocfs_clear_stats(stats);
1038
1039 return len;
1040 }
1041
1042 static void *lprocfs_stats_seq_start(struct seq_file *p, loff_t *pos)
1043 {
1044 struct lprocfs_stats *stats = p->private;
1045
1046 return (*pos < stats->ls_num) ? pos : NULL;
1047 }
1048
1049 static void lprocfs_stats_seq_stop(struct seq_file *p, void *v)
1050 {
1051 }
1052
1053 static void *lprocfs_stats_seq_next(struct seq_file *p, void *v, loff_t *pos)
1054 {
1055 (*pos)++;
1056 return lprocfs_stats_seq_start(p, pos);
1057 }
1058
1059 /* seq file export of one lprocfs counter */
1060 static int lprocfs_stats_seq_show(struct seq_file *p, void *v)
1061 {
1062 struct lprocfs_stats *stats = p->private;
1063 struct lprocfs_counter_header *hdr;
1064 struct lprocfs_counter ctr;
1065 int idx = *(loff_t *)v;
1066 int rc = 0;
1067
1068 if (idx == 0) {
1069 struct timeval now;
1070 do_gettimeofday(&now);
1071 rc = seq_printf(p, "%-25s %lu.%lu secs.usecs\n",
1072 "snapshot_time", now.tv_sec, now.tv_usec);
1073 if (rc < 0)
1074 return rc;
1075 }
1076 hdr = &stats->ls_cnt_header[idx];
1077 lprocfs_stats_collect(stats, idx, &ctr);
1078
1079 if (ctr.lc_count == 0)
1080 goto out;
1081
1082 rc = seq_printf(p, "%-25s "LPD64" samples [%s]", hdr->lc_name,
1083 ctr.lc_count, hdr->lc_units);
1084
1085 if (rc < 0)
1086 goto out;
1087
1088 if ((hdr->lc_config & LPROCFS_CNTR_AVGMINMAX) && (ctr.lc_count > 0)) {
1089 rc = seq_printf(p, " "LPD64" "LPD64" "LPD64,
1090 ctr.lc_min, ctr.lc_max, ctr.lc_sum);
1091 if (rc < 0)
1092 goto out;
1093 if (hdr->lc_config & LPROCFS_CNTR_STDDEV)
1094 rc = seq_printf(p, " "LPD64, ctr.lc_sumsquare);
1095 if (rc < 0)
1096 goto out;
1097 }
1098 rc = seq_printf(p, "\n");
1099 out:
1100 return (rc < 0) ? rc : 0;
1101 }
1102
1103 struct seq_operations lprocfs_stats_seq_sops = {
1104 .start = lprocfs_stats_seq_start,
1105 .stop = lprocfs_stats_seq_stop,
1106 .next = lprocfs_stats_seq_next,
1107 .show = lprocfs_stats_seq_show,
1108 };
1109
1110 static int lprocfs_stats_seq_open(struct inode *inode, struct file *file)
1111 {
1112 struct seq_file *seq;
1113 int rc;
1114
1115 rc = seq_open(file, &lprocfs_stats_seq_sops);
1116 if (rc)
1117 return rc;
1118 seq = file->private_data;
1119 seq->private = PDE_DATA(inode);
1120 return 0;
1121 }
1122
1123 struct file_operations lprocfs_stats_seq_fops = {
1124 .owner = THIS_MODULE,
1125 .open = lprocfs_stats_seq_open,
1126 .read = seq_read,
1127 .write = lprocfs_stats_seq_write,
1128 .llseek = seq_lseek,
1129 .release = lprocfs_seq_release,
1130 };
1131
1132 int lprocfs_register_stats(struct proc_dir_entry *root, const char *name,
1133 struct lprocfs_stats *stats)
1134 {
1135 struct proc_dir_entry *entry;
1136 LASSERT(root != NULL);
1137
1138 entry = proc_create_data(name, 0644, root,
1139 &lprocfs_stats_seq_fops, stats);
1140 if (entry == NULL)
1141 return -ENOMEM;
1142
1143 return 0;
1144 }
1145 EXPORT_SYMBOL(lprocfs_register_stats);
1146
1147 void lprocfs_counter_init(struct lprocfs_stats *stats, int index,
1148 unsigned conf, const char *name, const char *units)
1149 {
1150 struct lprocfs_counter_header *header;
1151 struct lprocfs_counter *percpu_cntr;
1152 unsigned long flags = 0;
1153 unsigned int i;
1154 unsigned int num_cpu;
1155
1156 LASSERT(stats != NULL);
1157
1158 header = &stats->ls_cnt_header[index];
1159 LASSERTF(header != NULL, "Failed to allocate stats header:[%d]%s/%s\n",
1160 index, name, units);
1161
1162 header->lc_config = conf;
1163 header->lc_name = name;
1164 header->lc_units = units;
1165
1166 num_cpu = lprocfs_stats_lock(stats, LPROCFS_GET_NUM_CPU, &flags);
1167 for (i = 0; i < num_cpu; ++i) {
1168 if (stats->ls_percpu[i] == NULL)
1169 continue;
1170 percpu_cntr = lprocfs_stats_counter_get(stats, i, index);
1171 percpu_cntr->lc_count = 0;
1172 percpu_cntr->lc_min = LC_MIN_INIT;
1173 percpu_cntr->lc_max = 0;
1174 percpu_cntr->lc_sumsquare = 0;
1175 percpu_cntr->lc_sum = 0;
1176 if ((stats->ls_flags & LPROCFS_STATS_FLAG_IRQ_SAFE) != 0)
1177 percpu_cntr->lc_sum_irq = 0;
1178 }
1179 lprocfs_stats_unlock(stats, LPROCFS_GET_NUM_CPU, &flags);
1180 }
1181 EXPORT_SYMBOL(lprocfs_counter_init);
1182
1183 #define LPROCFS_OBD_OP_INIT(base, stats, op) \
1184 do { \
1185 unsigned int coffset = base + OBD_COUNTER_OFFSET(op); \
1186 LASSERT(coffset < stats->ls_num); \
1187 lprocfs_counter_init(stats, coffset, 0, #op, "reqs"); \
1188 } while (0)
1189
1190 void lprocfs_init_ops_stats(int num_private_stats, struct lprocfs_stats *stats)
1191 {
1192 LPROCFS_OBD_OP_INIT(num_private_stats, stats, iocontrol);
1193 LPROCFS_OBD_OP_INIT(num_private_stats, stats, get_info);
1194 LPROCFS_OBD_OP_INIT(num_private_stats, stats, set_info_async);
1195 LPROCFS_OBD_OP_INIT(num_private_stats, stats, attach);
1196 LPROCFS_OBD_OP_INIT(num_private_stats, stats, detach);
1197 LPROCFS_OBD_OP_INIT(num_private_stats, stats, setup);
1198 LPROCFS_OBD_OP_INIT(num_private_stats, stats, precleanup);
1199 LPROCFS_OBD_OP_INIT(num_private_stats, stats, cleanup);
1200 LPROCFS_OBD_OP_INIT(num_private_stats, stats, process_config);
1201 LPROCFS_OBD_OP_INIT(num_private_stats, stats, postrecov);
1202 LPROCFS_OBD_OP_INIT(num_private_stats, stats, add_conn);
1203 LPROCFS_OBD_OP_INIT(num_private_stats, stats, del_conn);
1204 LPROCFS_OBD_OP_INIT(num_private_stats, stats, connect);
1205 LPROCFS_OBD_OP_INIT(num_private_stats, stats, reconnect);
1206 LPROCFS_OBD_OP_INIT(num_private_stats, stats, disconnect);
1207 LPROCFS_OBD_OP_INIT(num_private_stats, stats, fid_init);
1208 LPROCFS_OBD_OP_INIT(num_private_stats, stats, fid_fini);
1209 LPROCFS_OBD_OP_INIT(num_private_stats, stats, fid_alloc);
1210 LPROCFS_OBD_OP_INIT(num_private_stats, stats, statfs);
1211 LPROCFS_OBD_OP_INIT(num_private_stats, stats, statfs_async);
1212 LPROCFS_OBD_OP_INIT(num_private_stats, stats, packmd);
1213 LPROCFS_OBD_OP_INIT(num_private_stats, stats, unpackmd);
1214 LPROCFS_OBD_OP_INIT(num_private_stats, stats, preallocate);
1215 LPROCFS_OBD_OP_INIT(num_private_stats, stats, precreate);
1216 LPROCFS_OBD_OP_INIT(num_private_stats, stats, create);
1217 LPROCFS_OBD_OP_INIT(num_private_stats, stats, create_async);
1218 LPROCFS_OBD_OP_INIT(num_private_stats, stats, destroy);
1219 LPROCFS_OBD_OP_INIT(num_private_stats, stats, setattr);
1220 LPROCFS_OBD_OP_INIT(num_private_stats, stats, setattr_async);
1221 LPROCFS_OBD_OP_INIT(num_private_stats, stats, getattr);
1222 LPROCFS_OBD_OP_INIT(num_private_stats, stats, getattr_async);
1223 LPROCFS_OBD_OP_INIT(num_private_stats, stats, brw);
1224 LPROCFS_OBD_OP_INIT(num_private_stats, stats, merge_lvb);
1225 LPROCFS_OBD_OP_INIT(num_private_stats, stats, adjust_kms);
1226 LPROCFS_OBD_OP_INIT(num_private_stats, stats, punch);
1227 LPROCFS_OBD_OP_INIT(num_private_stats, stats, sync);
1228 LPROCFS_OBD_OP_INIT(num_private_stats, stats, migrate);
1229 LPROCFS_OBD_OP_INIT(num_private_stats, stats, copy);
1230 LPROCFS_OBD_OP_INIT(num_private_stats, stats, iterate);
1231 LPROCFS_OBD_OP_INIT(num_private_stats, stats, preprw);
1232 LPROCFS_OBD_OP_INIT(num_private_stats, stats, commitrw);
1233 LPROCFS_OBD_OP_INIT(num_private_stats, stats, enqueue);
1234 LPROCFS_OBD_OP_INIT(num_private_stats, stats, change_cbdata);
1235 LPROCFS_OBD_OP_INIT(num_private_stats, stats, find_cbdata);
1236 LPROCFS_OBD_OP_INIT(num_private_stats, stats, cancel);
1237 LPROCFS_OBD_OP_INIT(num_private_stats, stats, cancel_unused);
1238 LPROCFS_OBD_OP_INIT(num_private_stats, stats, init_export);
1239 LPROCFS_OBD_OP_INIT(num_private_stats, stats, destroy_export);
1240 LPROCFS_OBD_OP_INIT(num_private_stats, stats, extent_calc);
1241 LPROCFS_OBD_OP_INIT(num_private_stats, stats, llog_init);
1242 LPROCFS_OBD_OP_INIT(num_private_stats, stats, llog_connect);
1243 LPROCFS_OBD_OP_INIT(num_private_stats, stats, llog_finish);
1244 LPROCFS_OBD_OP_INIT(num_private_stats, stats, pin);
1245 LPROCFS_OBD_OP_INIT(num_private_stats, stats, unpin);
1246 LPROCFS_OBD_OP_INIT(num_private_stats, stats, import_event);
1247 LPROCFS_OBD_OP_INIT(num_private_stats, stats, notify);
1248 LPROCFS_OBD_OP_INIT(num_private_stats, stats, health_check);
1249 LPROCFS_OBD_OP_INIT(num_private_stats, stats, get_uuid);
1250 LPROCFS_OBD_OP_INIT(num_private_stats, stats, quotacheck);
1251 LPROCFS_OBD_OP_INIT(num_private_stats, stats, quotactl);
1252 LPROCFS_OBD_OP_INIT(num_private_stats, stats, ping);
1253 LPROCFS_OBD_OP_INIT(num_private_stats, stats, pool_new);
1254 LPROCFS_OBD_OP_INIT(num_private_stats, stats, pool_rem);
1255 LPROCFS_OBD_OP_INIT(num_private_stats, stats, pool_add);
1256 LPROCFS_OBD_OP_INIT(num_private_stats, stats, pool_del);
1257 LPROCFS_OBD_OP_INIT(num_private_stats, stats, getref);
1258 LPROCFS_OBD_OP_INIT(num_private_stats, stats, putref);
1259 }
1260 EXPORT_SYMBOL(lprocfs_init_ops_stats);
1261
1262 int lprocfs_alloc_obd_stats(struct obd_device *obd, unsigned num_private_stats)
1263 {
1264 struct lprocfs_stats *stats;
1265 unsigned int num_stats;
1266 int rc, i;
1267
1268 LASSERT(obd->obd_stats == NULL);
1269 LASSERT(obd->obd_proc_entry != NULL);
1270 LASSERT(obd->obd_cntr_base == 0);
1271
1272 num_stats = ((int)sizeof(*obd->obd_type->typ_dt_ops) / sizeof(void *)) +
1273 num_private_stats - 1 /* o_owner */;
1274 stats = lprocfs_alloc_stats(num_stats, 0);
1275 if (stats == NULL)
1276 return -ENOMEM;
1277
1278 lprocfs_init_ops_stats(num_private_stats, stats);
1279
1280 for (i = num_private_stats; i < num_stats; i++) {
1281 /* If this LBUGs, it is likely that an obd
1282 * operation was added to struct obd_ops in
1283 * <obd.h>, and that the corresponding line item
1284 * LPROCFS_OBD_OP_INIT(.., .., opname)
1285 * is missing from the list above. */
1286 LASSERTF(stats->ls_cnt_header[i].lc_name != NULL,
1287 "Missing obd_stat initializer obd_op "
1288 "operation at offset %d.\n", i - num_private_stats);
1289 }
1290 rc = lprocfs_register_stats(obd->obd_proc_entry, "stats", stats);
1291 if (rc < 0) {
1292 lprocfs_free_stats(&stats);
1293 } else {
1294 obd->obd_stats = stats;
1295 obd->obd_cntr_base = num_private_stats;
1296 }
1297 return rc;
1298 }
1299 EXPORT_SYMBOL(lprocfs_alloc_obd_stats);
1300
1301 void lprocfs_free_obd_stats(struct obd_device *obd)
1302 {
1303 if (obd->obd_stats)
1304 lprocfs_free_stats(&obd->obd_stats);
1305 }
1306 EXPORT_SYMBOL(lprocfs_free_obd_stats);
1307
1308 #define LPROCFS_MD_OP_INIT(base, stats, op) \
1309 do { \
1310 unsigned int coffset = base + MD_COUNTER_OFFSET(op); \
1311 LASSERT(coffset < stats->ls_num); \
1312 lprocfs_counter_init(stats, coffset, 0, #op, "reqs"); \
1313 } while (0)
1314
1315 void lprocfs_init_mps_stats(int num_private_stats, struct lprocfs_stats *stats)
1316 {
1317 LPROCFS_MD_OP_INIT(num_private_stats, stats, getstatus);
1318 LPROCFS_MD_OP_INIT(num_private_stats, stats, null_inode);
1319 LPROCFS_MD_OP_INIT(num_private_stats, stats, find_cbdata);
1320 LPROCFS_MD_OP_INIT(num_private_stats, stats, close);
1321 LPROCFS_MD_OP_INIT(num_private_stats, stats, create);
1322 LPROCFS_MD_OP_INIT(num_private_stats, stats, done_writing);
1323 LPROCFS_MD_OP_INIT(num_private_stats, stats, enqueue);
1324 LPROCFS_MD_OP_INIT(num_private_stats, stats, getattr);
1325 LPROCFS_MD_OP_INIT(num_private_stats, stats, getattr_name);
1326 LPROCFS_MD_OP_INIT(num_private_stats, stats, intent_lock);
1327 LPROCFS_MD_OP_INIT(num_private_stats, stats, link);
1328 LPROCFS_MD_OP_INIT(num_private_stats, stats, rename);
1329 LPROCFS_MD_OP_INIT(num_private_stats, stats, is_subdir);
1330 LPROCFS_MD_OP_INIT(num_private_stats, stats, setattr);
1331 LPROCFS_MD_OP_INIT(num_private_stats, stats, sync);
1332 LPROCFS_MD_OP_INIT(num_private_stats, stats, readpage);
1333 LPROCFS_MD_OP_INIT(num_private_stats, stats, unlink);
1334 LPROCFS_MD_OP_INIT(num_private_stats, stats, setxattr);
1335 LPROCFS_MD_OP_INIT(num_private_stats, stats, getxattr);
1336 LPROCFS_MD_OP_INIT(num_private_stats, stats, init_ea_size);
1337 LPROCFS_MD_OP_INIT(num_private_stats, stats, get_lustre_md);
1338 LPROCFS_MD_OP_INIT(num_private_stats, stats, free_lustre_md);
1339 LPROCFS_MD_OP_INIT(num_private_stats, stats, set_open_replay_data);
1340 LPROCFS_MD_OP_INIT(num_private_stats, stats, clear_open_replay_data);
1341 LPROCFS_MD_OP_INIT(num_private_stats, stats, set_lock_data);
1342 LPROCFS_MD_OP_INIT(num_private_stats, stats, lock_match);
1343 LPROCFS_MD_OP_INIT(num_private_stats, stats, cancel_unused);
1344 LPROCFS_MD_OP_INIT(num_private_stats, stats, renew_capa);
1345 LPROCFS_MD_OP_INIT(num_private_stats, stats, unpack_capa);
1346 LPROCFS_MD_OP_INIT(num_private_stats, stats, get_remote_perm);
1347 LPROCFS_MD_OP_INIT(num_private_stats, stats, intent_getattr_async);
1348 LPROCFS_MD_OP_INIT(num_private_stats, stats, revalidate_lock);
1349 }
1350 EXPORT_SYMBOL(lprocfs_init_mps_stats);
1351
1352 int lprocfs_alloc_md_stats(struct obd_device *obd,
1353 unsigned num_private_stats)
1354 {
1355 struct lprocfs_stats *stats;
1356 unsigned int num_stats;
1357 int rc, i;
1358
1359 LASSERT(obd->md_stats == NULL);
1360 LASSERT(obd->obd_proc_entry != NULL);
1361 LASSERT(obd->md_cntr_base == 0);
1362
1363 num_stats = 1 + MD_COUNTER_OFFSET(revalidate_lock) +
1364 num_private_stats;
1365 stats = lprocfs_alloc_stats(num_stats, 0);
1366 if (stats == NULL)
1367 return -ENOMEM;
1368
1369 lprocfs_init_mps_stats(num_private_stats, stats);
1370
1371 for (i = num_private_stats; i < num_stats; i++) {
1372 if (stats->ls_cnt_header[i].lc_name == NULL) {
1373 CERROR("Missing md_stat initializer md_op "
1374 "operation at offset %d. Aborting.\n",
1375 i - num_private_stats);
1376 LBUG();
1377 }
1378 }
1379 rc = lprocfs_register_stats(obd->obd_proc_entry, "md_stats", stats);
1380 if (rc < 0) {
1381 lprocfs_free_stats(&stats);
1382 } else {
1383 obd->md_stats = stats;
1384 obd->md_cntr_base = num_private_stats;
1385 }
1386 return rc;
1387 }
1388 EXPORT_SYMBOL(lprocfs_alloc_md_stats);
1389
1390 void lprocfs_free_md_stats(struct obd_device *obd)
1391 {
1392 struct lprocfs_stats *stats = obd->md_stats;
1393
1394 if (stats != NULL) {
1395 obd->md_stats = NULL;
1396 obd->md_cntr_base = 0;
1397 lprocfs_free_stats(&stats);
1398 }
1399 }
1400 EXPORT_SYMBOL(lprocfs_free_md_stats);
1401
1402 void lprocfs_init_ldlm_stats(struct lprocfs_stats *ldlm_stats)
1403 {
1404 lprocfs_counter_init(ldlm_stats,
1405 LDLM_ENQUEUE - LDLM_FIRST_OPC,
1406 0, "ldlm_enqueue", "reqs");
1407 lprocfs_counter_init(ldlm_stats,
1408 LDLM_CONVERT - LDLM_FIRST_OPC,
1409 0, "ldlm_convert", "reqs");
1410 lprocfs_counter_init(ldlm_stats,
1411 LDLM_CANCEL - LDLM_FIRST_OPC,
1412 0, "ldlm_cancel", "reqs");
1413 lprocfs_counter_init(ldlm_stats,
1414 LDLM_BL_CALLBACK - LDLM_FIRST_OPC,
1415 0, "ldlm_bl_callback", "reqs");
1416 lprocfs_counter_init(ldlm_stats,
1417 LDLM_CP_CALLBACK - LDLM_FIRST_OPC,
1418 0, "ldlm_cp_callback", "reqs");
1419 lprocfs_counter_init(ldlm_stats,
1420 LDLM_GL_CALLBACK - LDLM_FIRST_OPC,
1421 0, "ldlm_gl_callback", "reqs");
1422 }
1423 EXPORT_SYMBOL(lprocfs_init_ldlm_stats);
1424
1425 int lprocfs_exp_print_uuid(cfs_hash_t *hs, cfs_hash_bd_t *bd,
1426 struct hlist_node *hnode, void *data)
1427
1428 {
1429 struct obd_export *exp = cfs_hash_object(hs, hnode);
1430 struct seq_file *m = (struct seq_file *)data;
1431
1432 if (exp->exp_nid_stats)
1433 seq_printf(m, "%s\n", obd_uuid2str(&exp->exp_client_uuid));
1434
1435 return 0;
1436 }
1437
1438 static int
1439 lproc_exp_uuid_seq_show(struct seq_file *m, void *unused)
1440 {
1441 struct nid_stat *stats = (struct nid_stat *)m->private;
1442 struct obd_device *obd = stats->nid_obd;
1443
1444 cfs_hash_for_each_key(obd->obd_nid_hash, &stats->nid,
1445 lprocfs_exp_print_uuid, m);
1446 return 0;
1447 }
1448
1449 LPROC_SEQ_FOPS_RO(lproc_exp_uuid);
1450
1451 struct exp_hash_cb_data {
1452 struct seq_file *m;
1453 bool first;
1454 };
1455
1456 int lprocfs_exp_print_hash(cfs_hash_t *hs, cfs_hash_bd_t *bd,
1457 struct hlist_node *hnode, void *cb_data)
1458
1459 {
1460 struct exp_hash_cb_data *data = (struct exp_hash_cb_data *)cb_data;
1461 struct obd_export *exp = cfs_hash_object(hs, hnode);
1462
1463 if (exp->exp_lock_hash != NULL) {
1464 if (data->first) {
1465 cfs_hash_debug_header(data->m);
1466 data->first = false;
1467 }
1468 cfs_hash_debug_str(hs, data->m);
1469 }
1470
1471 return 0;
1472 }
1473
1474 static int
1475 lproc_exp_hash_seq_show(struct seq_file *m, void *unused)
1476 {
1477 struct nid_stat *stats = (struct nid_stat *)m->private;
1478 struct obd_device *obd = stats->nid_obd;
1479 struct exp_hash_cb_data cb_data = {m, true};
1480
1481 cfs_hash_for_each_key(obd->obd_nid_hash, &stats->nid,
1482 lprocfs_exp_print_hash, &cb_data);
1483 return 0;
1484 }
1485
1486 LPROC_SEQ_FOPS_RO(lproc_exp_hash);
1487
1488 int lprocfs_nid_stats_clear_read(struct seq_file *m, void *data)
1489 {
1490 return seq_printf(m, "%s\n",
1491 "Write into this file to clear all nid stats and "
1492 "stale nid entries");
1493 }
1494 EXPORT_SYMBOL(lprocfs_nid_stats_clear_read);
1495
1496 static int lprocfs_nid_stats_clear_write_cb(void *obj, void *data)
1497 {
1498 struct nid_stat *stat = obj;
1499
1500 CDEBUG(D_INFO,"refcnt %d\n", atomic_read(&stat->nid_exp_ref_count));
1501 if (atomic_read(&stat->nid_exp_ref_count) == 1) {
1502 /* object has only hash references. */
1503 spin_lock(&stat->nid_obd->obd_nid_lock);
1504 list_move(&stat->nid_list, data);
1505 spin_unlock(&stat->nid_obd->obd_nid_lock);
1506 return 1;
1507 }
1508 /* we has reference to object - only clear data*/
1509 if (stat->nid_stats)
1510 lprocfs_clear_stats(stat->nid_stats);
1511
1512 return 0;
1513 }
1514
1515 int lprocfs_nid_stats_clear_write(struct file *file, const char *buffer,
1516 unsigned long count, void *data)
1517 {
1518 struct obd_device *obd = (struct obd_device *)data;
1519 struct nid_stat *client_stat;
1520 LIST_HEAD(free_list);
1521
1522 cfs_hash_cond_del(obd->obd_nid_stats_hash,
1523 lprocfs_nid_stats_clear_write_cb, &free_list);
1524
1525 while (!list_empty(&free_list)) {
1526 client_stat = list_entry(free_list.next, struct nid_stat,
1527 nid_list);
1528 list_del_init(&client_stat->nid_list);
1529 lprocfs_free_client_stats(client_stat);
1530 }
1531
1532 return count;
1533 }
1534 EXPORT_SYMBOL(lprocfs_nid_stats_clear_write);
1535
1536 int lprocfs_exp_setup(struct obd_export *exp, lnet_nid_t *nid, int *newnid)
1537 {
1538 struct nid_stat *new_stat, *old_stat;
1539 struct obd_device *obd = NULL;
1540 struct proc_dir_entry *entry;
1541 char *buffer = NULL;
1542 int rc = 0;
1543
1544 *newnid = 0;
1545
1546 if (!exp || !exp->exp_obd || !exp->exp_obd->obd_proc_exports_entry ||
1547 !exp->exp_obd->obd_nid_stats_hash)
1548 return -EINVAL;
1549
1550 /* not test against zero because eric say:
1551 * You may only test nid against another nid, or LNET_NID_ANY.
1552 * Anything else is nonsense.*/
1553 if (!nid || *nid == LNET_NID_ANY)
1554 return 0;
1555
1556 obd = exp->exp_obd;
1557
1558 CDEBUG(D_CONFIG, "using hash %p\n", obd->obd_nid_stats_hash);
1559
1560 OBD_ALLOC_PTR(new_stat);
1561 if (new_stat == NULL)
1562 return -ENOMEM;
1563
1564 new_stat->nid = *nid;
1565 new_stat->nid_obd = exp->exp_obd;
1566 /* we need set default refcount to 1 to balance obd_disconnect */
1567 atomic_set(&new_stat->nid_exp_ref_count, 1);
1568
1569 old_stat = cfs_hash_findadd_unique(obd->obd_nid_stats_hash,
1570 nid, &new_stat->nid_hash);
1571 CDEBUG(D_INFO, "Found stats %p for nid %s - ref %d\n",
1572 old_stat, libcfs_nid2str(*nid),
1573 atomic_read(&new_stat->nid_exp_ref_count));
1574
1575 /* We need to release old stats because lprocfs_exp_cleanup() hasn't
1576 * been and will never be called. */
1577 if (exp->exp_nid_stats) {
1578 nidstat_putref(exp->exp_nid_stats);
1579 exp->exp_nid_stats = NULL;
1580 }
1581
1582 /* Return -EALREADY here so that we know that the /proc
1583 * entry already has been created */
1584 if (old_stat != new_stat) {
1585 exp->exp_nid_stats = old_stat;
1586 GOTO(destroy_new, rc = -EALREADY);
1587 }
1588 /* not found - create */
1589 OBD_ALLOC(buffer, LNET_NIDSTR_SIZE);
1590 if (buffer == NULL)
1591 GOTO(destroy_new, rc = -ENOMEM);
1592
1593 memcpy(buffer, libcfs_nid2str(*nid), LNET_NIDSTR_SIZE);
1594 new_stat->nid_proc = lprocfs_register(buffer,
1595 obd->obd_proc_exports_entry,
1596 NULL, NULL);
1597 OBD_FREE(buffer, LNET_NIDSTR_SIZE);
1598
1599 if (IS_ERR(new_stat->nid_proc)) {
1600 CERROR("Error making export directory for nid %s\n",
1601 libcfs_nid2str(*nid));
1602 rc = PTR_ERR(new_stat->nid_proc);
1603 new_stat->nid_proc = NULL;
1604 GOTO(destroy_new_ns, rc);
1605 }
1606
1607 entry = lprocfs_add_simple(new_stat->nid_proc, "uuid",
1608 new_stat, &lproc_exp_uuid_fops);
1609 if (IS_ERR(entry)) {
1610 CWARN("Error adding the NID stats file\n");
1611 rc = PTR_ERR(entry);
1612 GOTO(destroy_new_ns, rc);
1613 }
1614
1615 entry = lprocfs_add_simple(new_stat->nid_proc, "hash",
1616 new_stat, &lproc_exp_hash_fops);
1617 if (IS_ERR(entry)) {
1618 CWARN("Error adding the hash file\n");
1619 rc = PTR_ERR(entry);
1620 GOTO(destroy_new_ns, rc);
1621 }
1622
1623 exp->exp_nid_stats = new_stat;
1624 *newnid = 1;
1625 /* protect competitive add to list, not need locking on destroy */
1626 spin_lock(&obd->obd_nid_lock);
1627 list_add(&new_stat->nid_list, &obd->obd_nid_stats);
1628 spin_unlock(&obd->obd_nid_lock);
1629
1630 return rc;
1631
1632 destroy_new_ns:
1633 if (new_stat->nid_proc != NULL)
1634 lprocfs_remove(&new_stat->nid_proc);
1635 cfs_hash_del(obd->obd_nid_stats_hash, nid, &new_stat->nid_hash);
1636
1637 destroy_new:
1638 nidstat_putref(new_stat);
1639 OBD_FREE_PTR(new_stat);
1640 return rc;
1641 }
1642 EXPORT_SYMBOL(lprocfs_exp_setup);
1643
1644 int lprocfs_exp_cleanup(struct obd_export *exp)
1645 {
1646 struct nid_stat *stat = exp->exp_nid_stats;
1647
1648 if(!stat || !exp->exp_obd)
1649 return 0;
1650
1651 nidstat_putref(exp->exp_nid_stats);
1652 exp->exp_nid_stats = NULL;
1653
1654 return 0;
1655 }
1656 EXPORT_SYMBOL(lprocfs_exp_cleanup);
1657
1658 int lprocfs_write_helper(const char *buffer, unsigned long count,
1659 int *val)
1660 {
1661 return lprocfs_write_frac_helper(buffer, count, val, 1);
1662 }
1663 EXPORT_SYMBOL(lprocfs_write_helper);
1664
1665 int lprocfs_write_frac_helper(const char *buffer, unsigned long count,
1666 int *val, int mult)
1667 {
1668 char kernbuf[20], *end, *pbuf;
1669
1670 if (count > (sizeof(kernbuf) - 1))
1671 return -EINVAL;
1672
1673 if (copy_from_user(kernbuf, buffer, count))
1674 return -EFAULT;
1675
1676 kernbuf[count] = '\0';
1677 pbuf = kernbuf;
1678 if (*pbuf == '-') {
1679 mult = -mult;
1680 pbuf++;
1681 }
1682
1683 *val = (int)simple_strtoul(pbuf, &end, 10) * mult;
1684 if (pbuf == end)
1685 return -EINVAL;
1686
1687 if (end != NULL && *end == '.') {
1688 int temp_val, pow = 1;
1689 int i;
1690
1691 pbuf = end + 1;
1692 if (strlen(pbuf) > 5)
1693 pbuf[5] = '\0'; /*only allow 5bits fractional*/
1694
1695 temp_val = (int)simple_strtoul(pbuf, &end, 10) * mult;
1696
1697 if (pbuf < end) {
1698 for (i = 0; i < (end - pbuf); i++)
1699 pow *= 10;
1700
1701 *val += temp_val / pow;
1702 }
1703 }
1704 return 0;
1705 }
1706 EXPORT_SYMBOL(lprocfs_write_frac_helper);
1707
1708 int lprocfs_read_frac_helper(char *buffer, unsigned long count, long val,
1709 int mult)
1710 {
1711 long decimal_val, frac_val;
1712 int prtn;
1713
1714 if (count < 10)
1715 return -EINVAL;
1716
1717 decimal_val = val / mult;
1718 prtn = snprintf(buffer, count, "%ld", decimal_val);
1719 frac_val = val % mult;
1720
1721 if (prtn < (count - 4) && frac_val > 0) {
1722 long temp_frac;
1723 int i, temp_mult = 1, frac_bits = 0;
1724
1725 temp_frac = frac_val * 10;
1726 buffer[prtn++] = '.';
1727 while (frac_bits < 2 && (temp_frac / mult) < 1 ) {
1728 /* only reserved 2 bits fraction */
1729 buffer[prtn++] ='0';
1730 temp_frac *= 10;
1731 frac_bits++;
1732 }
1733 /*
1734 * Need to think these cases :
1735 * 1. #echo x.00 > /proc/xxx output result : x
1736 * 2. #echo x.0x > /proc/xxx output result : x.0x
1737 * 3. #echo x.x0 > /proc/xxx output result : x.x
1738 * 4. #echo x.xx > /proc/xxx output result : x.xx
1739 * Only reserved 2 bits fraction.
1740 */
1741 for (i = 0; i < (5 - prtn); i++)
1742 temp_mult *= 10;
1743
1744 frac_bits = min((int)count - prtn, 3 - frac_bits);
1745 prtn += snprintf(buffer + prtn, frac_bits, "%ld",
1746 frac_val * temp_mult / mult);
1747
1748 prtn--;
1749 while(buffer[prtn] < '1' || buffer[prtn] > '9') {
1750 prtn--;
1751 if (buffer[prtn] == '.') {
1752 prtn--;
1753 break;
1754 }
1755 }
1756 prtn++;
1757 }
1758 buffer[prtn++] ='\n';
1759 return prtn;
1760 }
1761 EXPORT_SYMBOL(lprocfs_read_frac_helper);
1762
1763 int lprocfs_seq_read_frac_helper(struct seq_file *m, long val, int mult)
1764 {
1765 long decimal_val, frac_val;
1766
1767 decimal_val = val / mult;
1768 seq_printf(m, "%ld", decimal_val);
1769 frac_val = val % mult;
1770
1771 if (frac_val > 0) {
1772 frac_val *= 100;
1773 frac_val /= mult;
1774 }
1775 if (frac_val > 0) {
1776 /* Three cases: x0, xx, 0x */
1777 if ((frac_val % 10) != 0)
1778 seq_printf(m, ".%ld", frac_val);
1779 else
1780 seq_printf(m, ".%ld", frac_val / 10);
1781 }
1782
1783 seq_printf(m, "\n");
1784 return 0;
1785 }
1786 EXPORT_SYMBOL(lprocfs_seq_read_frac_helper);
1787
1788 int lprocfs_write_u64_helper(const char *buffer, unsigned long count,__u64 *val)
1789 {
1790 return lprocfs_write_frac_u64_helper(buffer, count, val, 1);
1791 }
1792 EXPORT_SYMBOL(lprocfs_write_u64_helper);
1793
1794 int lprocfs_write_frac_u64_helper(const char *buffer, unsigned long count,
1795 __u64 *val, int mult)
1796 {
1797 char kernbuf[22], *end, *pbuf;
1798 __u64 whole, frac = 0, units;
1799 unsigned frac_d = 1;
1800
1801 if (count > (sizeof(kernbuf) - 1))
1802 return -EINVAL;
1803
1804 if (copy_from_user(kernbuf, buffer, count))
1805 return -EFAULT;
1806
1807 kernbuf[count] = '\0';
1808 pbuf = kernbuf;
1809 if (*pbuf == '-') {
1810 mult = -mult;
1811 pbuf++;
1812 }
1813
1814 whole = simple_strtoull(pbuf, &end, 10);
1815 if (pbuf == end)
1816 return -EINVAL;
1817
1818 if (end != NULL && *end == '.') {
1819 int i;
1820 pbuf = end + 1;
1821
1822 /* need to limit frac_d to a __u32 */
1823 if (strlen(pbuf) > 10)
1824 pbuf[10] = '\0';
1825
1826 frac = simple_strtoull(pbuf, &end, 10);
1827 /* count decimal places */
1828 for (i = 0; i < (end - pbuf); i++)
1829 frac_d *= 10;
1830 }
1831
1832 units = 1;
1833 switch(*end) {
1834 case 'p': case 'P':
1835 units <<= 10;
1836 case 't': case 'T':
1837 units <<= 10;
1838 case 'g': case 'G':
1839 units <<= 10;
1840 case 'm': case 'M':
1841 units <<= 10;
1842 case 'k': case 'K':
1843 units <<= 10;
1844 }
1845 /* Specified units override the multiplier */
1846 if (units)
1847 mult = mult < 0 ? -units : units;
1848
1849 frac *= mult;
1850 do_div(frac, frac_d);
1851 *val = whole * mult + frac;
1852 return 0;
1853 }
1854 EXPORT_SYMBOL(lprocfs_write_frac_u64_helper);
1855
1856 static char *lprocfs_strnstr(const char *s1, const char *s2, size_t len)
1857 {
1858 size_t l2;
1859
1860 l2 = strlen(s2);
1861 if (!l2)
1862 return (char *)s1;
1863 while (len >= l2) {
1864 len--;
1865 if (!memcmp(s1, s2, l2))
1866 return (char *)s1;
1867 s1++;
1868 }
1869 return NULL;
1870 }
1871
1872 /**
1873 * Find the string \a name in the input \a buffer, and return a pointer to the
1874 * value immediately following \a name, reducing \a count appropriately.
1875 * If \a name is not found the original \a buffer is returned.
1876 */
1877 char *lprocfs_find_named_value(const char *buffer, const char *name,
1878 size_t *count)
1879 {
1880 char *val;
1881 size_t buflen = *count;
1882
1883 /* there is no strnstr() in rhel5 and ubuntu kernels */
1884 val = lprocfs_strnstr(buffer, name, buflen);
1885 if (val == NULL)
1886 return (char *)buffer;
1887
1888 val += strlen(name); /* skip prefix */
1889 while (val < buffer + buflen && isspace(*val)) /* skip separator */
1890 val++;
1891
1892 *count = 0;
1893 while (val < buffer + buflen && isalnum(*val)) {
1894 ++*count;
1895 ++val;
1896 }
1897
1898 return val - *count;
1899 }
1900 EXPORT_SYMBOL(lprocfs_find_named_value);
1901
1902 int lprocfs_seq_create(struct proc_dir_entry *parent,
1903 const char *name,
1904 umode_t mode,
1905 const struct file_operations *seq_fops,
1906 void *data)
1907 {
1908 struct proc_dir_entry *entry;
1909
1910 /* Disallow secretly (un)writable entries. */
1911 LASSERT((seq_fops->write == NULL) == ((mode & 0222) == 0));
1912 entry = proc_create_data(name, mode, parent, seq_fops, data);
1913
1914 if (entry == NULL)
1915 return -ENOMEM;
1916
1917 return 0;
1918 }
1919 EXPORT_SYMBOL(lprocfs_seq_create);
1920
1921 int lprocfs_obd_seq_create(struct obd_device *dev,
1922 const char *name,
1923 umode_t mode,
1924 const struct file_operations *seq_fops,
1925 void *data)
1926 {
1927 return (lprocfs_seq_create(dev->obd_proc_entry, name,
1928 mode, seq_fops, data));
1929 }
1930 EXPORT_SYMBOL(lprocfs_obd_seq_create);
1931
1932 void lprocfs_oh_tally(struct obd_histogram *oh, unsigned int value)
1933 {
1934 if (value >= OBD_HIST_MAX)
1935 value = OBD_HIST_MAX - 1;
1936
1937 spin_lock(&oh->oh_lock);
1938 oh->oh_buckets[value]++;
1939 spin_unlock(&oh->oh_lock);
1940 }
1941 EXPORT_SYMBOL(lprocfs_oh_tally);
1942
1943 void lprocfs_oh_tally_log2(struct obd_histogram *oh, unsigned int value)
1944 {
1945 unsigned int val;
1946
1947 for (val = 0; ((1 << val) < value) && (val <= OBD_HIST_MAX); val++)
1948 ;
1949
1950 lprocfs_oh_tally(oh, val);
1951 }
1952 EXPORT_SYMBOL(lprocfs_oh_tally_log2);
1953
1954 unsigned long lprocfs_oh_sum(struct obd_histogram *oh)
1955 {
1956 unsigned long ret = 0;
1957 int i;
1958
1959 for (i = 0; i < OBD_HIST_MAX; i++)
1960 ret += oh->oh_buckets[i];
1961 return ret;
1962 }
1963 EXPORT_SYMBOL(lprocfs_oh_sum);
1964
1965 void lprocfs_oh_clear(struct obd_histogram *oh)
1966 {
1967 spin_lock(&oh->oh_lock);
1968 memset(oh->oh_buckets, 0, sizeof(oh->oh_buckets));
1969 spin_unlock(&oh->oh_lock);
1970 }
1971 EXPORT_SYMBOL(lprocfs_oh_clear);
1972
1973 int lprocfs_obd_rd_max_pages_per_rpc(struct seq_file *m, void *data)
1974 {
1975 struct obd_device *dev = data;
1976 struct client_obd *cli = &dev->u.cli;
1977 int rc;
1978
1979 client_obd_list_lock(&cli->cl_loi_list_lock);
1980 rc = seq_printf(m, "%d\n", cli->cl_max_pages_per_rpc);
1981 client_obd_list_unlock(&cli->cl_loi_list_lock);
1982 return rc;
1983 }
1984 EXPORT_SYMBOL(lprocfs_obd_rd_max_pages_per_rpc);
1985
1986 #endif /* LPROCFS*/
Linux kernel - Deliverables
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