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