4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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.
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).
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.gnu.org/licenses/gpl-2.0.html
23 * Copyright (c) 2002, 2010, Oracle and/or its affiliates. All rights reserved.
24 * Use is subject to license terms.
26 * Copyright (c) 2011, 2017, Intel Corporation.
29 * This file is part of Lustre, http://www.lustre.org/
31 * lustre/obdclass/lprocfs_status.c
33 * Author: Hariharan Thantry <thantry@users.sourceforge.net>
36 #define DEBUG_SUBSYSTEM S_CLASS
38 #include <obd_class.h>
39 #include <lprocfs_status.h>
43 static int lprocfs_no_percpu_stats = 0;
44 module_param(lprocfs_no_percpu_stats, int, 0644);
45 MODULE_PARM_DESC(lprocfs_no_percpu_stats, "Do not alloc percpu data for lprocfs stats");
47 #define MAX_STRING_SIZE 128
49 int lprocfs_single_release(struct inode *inode, struct file *file)
51 return single_release(inode, file);
53 EXPORT_SYMBOL(lprocfs_single_release);
55 int lprocfs_seq_release(struct inode *inode, struct file *file)
57 return seq_release(inode, file);
59 EXPORT_SYMBOL(lprocfs_seq_release);
61 static umode_t default_mode(const struct proc_ops *ops)
73 struct proc_dir_entry *
74 lprocfs_add_simple(struct proc_dir_entry *root, char *name,
75 void *data, const struct proc_ops *fops)
77 struct proc_dir_entry *proc;
80 if (!root || !name || !fops)
81 return ERR_PTR(-EINVAL);
83 mode = default_mode(fops);
84 proc = proc_create_data(name, mode, root, fops, data);
86 CERROR("LprocFS: No memory to create /proc entry %s\n",
88 return ERR_PTR(-ENOMEM);
92 EXPORT_SYMBOL(lprocfs_add_simple);
94 struct proc_dir_entry *lprocfs_add_symlink(const char *name,
95 struct proc_dir_entry *parent,
96 const char *format, ...)
98 struct proc_dir_entry *entry;
102 if (!parent || !format)
105 OBD_ALLOC_WAIT(dest, MAX_STRING_SIZE + 1);
109 va_start(ap, format);
110 vsnprintf(dest, MAX_STRING_SIZE, format, ap);
113 entry = proc_symlink(name, parent, dest);
115 CERROR("LprocFS: Could not create symbolic link from "
116 "%s to %s\n", name, dest);
118 OBD_FREE(dest, MAX_STRING_SIZE + 1);
121 EXPORT_SYMBOL(lprocfs_add_symlink);
123 static const struct file_operations ldebugfs_empty_ops = { };
125 void ldebugfs_add_vars(struct dentry *parent, struct ldebugfs_vars *list,
128 if (IS_ERR_OR_NULL(parent) || IS_ERR_OR_NULL(list))
134 if (list->proc_mode != 0000) {
135 mode = list->proc_mode;
136 } else if (list->fops) {
137 if (list->fops->read)
139 if (list->fops->write)
142 debugfs_create_file(list->name, mode, parent,
144 list->fops ? : &ldebugfs_empty_ops);
148 EXPORT_SYMBOL_GPL(ldebugfs_add_vars);
150 static const struct proc_ops lprocfs_empty_ops = { };
155 * \param root [in] The parent proc entry on which new entry will be added.
156 * \param list [in] Array of proc entries to be added.
157 * \param data [in] The argument to be passed when entries read/write routines
158 * are called through /proc file.
160 * \retval 0 on success
164 lprocfs_add_vars(struct proc_dir_entry *root, struct lprocfs_vars *list,
171 struct proc_dir_entry *proc;
175 mode = list->proc_mode;
177 mode = default_mode(list->fops);
178 proc = proc_create_data(list->name, mode, root,
179 list->fops ?: &lprocfs_empty_ops,
187 EXPORT_SYMBOL(lprocfs_add_vars);
189 void lprocfs_remove(struct proc_dir_entry **rooth)
194 EXPORT_SYMBOL(lprocfs_remove);
196 void lprocfs_remove_proc_entry(const char *name, struct proc_dir_entry *parent)
198 LASSERT(parent != NULL);
199 remove_proc_entry(name, parent);
201 EXPORT_SYMBOL(lprocfs_remove_proc_entry);
203 struct proc_dir_entry *
204 lprocfs_register(const char *name, struct proc_dir_entry *parent,
205 struct lprocfs_vars *list, void *data)
207 struct proc_dir_entry *newchild;
209 newchild = proc_mkdir(name, parent);
211 return ERR_PTR(-ENOMEM);
214 int rc = lprocfs_add_vars(newchild, list, data);
216 lprocfs_remove(&newchild);
222 EXPORT_SYMBOL(lprocfs_register);
224 /* Generic callbacks */
225 int lprocfs_uuid_seq_show(struct seq_file *m, void *data)
227 struct obd_device *obd = data;
229 LASSERT(obd != NULL);
230 seq_printf(m, "%s\n", obd->obd_uuid.uuid);
233 EXPORT_SYMBOL(lprocfs_uuid_seq_show);
235 static ssize_t uuid_show(struct kobject *kobj, struct attribute *attr,
238 struct obd_device *obd = container_of(kobj, struct obd_device,
241 return sprintf(buf, "%s\n", obd->obd_uuid.uuid);
243 LUSTRE_RO_ATTR(uuid);
245 static ssize_t blocksize_show(struct kobject *kobj, struct attribute *attr,
248 struct obd_device *obd = container_of(kobj, struct obd_device,
250 struct obd_statfs osfs;
253 rc = obd_statfs(NULL, obd->obd_self_export, &osfs,
254 ktime_get_seconds() - OBD_STATFS_CACHE_SECONDS,
257 return sprintf(buf, "%u\n", osfs.os_bsize);
261 LUSTRE_RO_ATTR(blocksize);
263 static ssize_t kbytestotal_show(struct kobject *kobj, struct attribute *attr,
266 struct obd_device *obd = container_of(kobj, struct obd_device,
268 struct obd_statfs osfs;
271 rc = obd_statfs(NULL, obd->obd_self_export, &osfs,
272 ktime_get_seconds() - OBD_STATFS_CACHE_SECONDS,
275 u32 blk_size = osfs.os_bsize >> 10;
276 u64 result = osfs.os_blocks;
278 result *= rounddown_pow_of_two(blk_size ?: 1);
279 return sprintf(buf, "%llu\n", result);
284 LUSTRE_RO_ATTR(kbytestotal);
286 static ssize_t kbytesfree_show(struct kobject *kobj, struct attribute *attr,
289 struct obd_device *obd = container_of(kobj, struct obd_device,
291 struct obd_statfs osfs;
294 rc = obd_statfs(NULL, obd->obd_self_export, &osfs,
295 ktime_get_seconds() - OBD_STATFS_CACHE_SECONDS,
298 u32 blk_size = osfs.os_bsize >> 10;
299 u64 result = osfs.os_bfree;
301 while (blk_size >>= 1)
304 return sprintf(buf, "%llu\n", result);
309 LUSTRE_RO_ATTR(kbytesfree);
311 static ssize_t kbytesavail_show(struct kobject *kobj, struct attribute *attr,
314 struct obd_device *obd = container_of(kobj, struct obd_device,
316 struct obd_statfs osfs;
319 rc = obd_statfs(NULL, obd->obd_self_export, &osfs,
320 ktime_get_seconds() - OBD_STATFS_CACHE_SECONDS,
323 u32 blk_size = osfs.os_bsize >> 10;
324 u64 result = osfs.os_bavail;
326 while (blk_size >>= 1)
329 return sprintf(buf, "%llu\n", result);
334 LUSTRE_RO_ATTR(kbytesavail);
336 static ssize_t filestotal_show(struct kobject *kobj, struct attribute *attr,
339 struct obd_device *obd = container_of(kobj, struct obd_device,
341 struct obd_statfs osfs;
344 rc = obd_statfs(NULL, obd->obd_self_export, &osfs,
345 ktime_get_seconds() - OBD_STATFS_CACHE_SECONDS,
348 return sprintf(buf, "%llu\n", osfs.os_files);
352 LUSTRE_RO_ATTR(filestotal);
354 static ssize_t filesfree_show(struct kobject *kobj, struct attribute *attr,
357 struct obd_device *obd = container_of(kobj, struct obd_device,
359 struct obd_statfs osfs;
362 rc = obd_statfs(NULL, obd->obd_self_export, &osfs,
363 ktime_get_seconds() - OBD_STATFS_CACHE_SECONDS,
366 return sprintf(buf, "%llu\n", osfs.os_ffree);
370 LUSTRE_RO_ATTR(filesfree);
372 ssize_t conn_uuid_show(struct kobject *kobj, struct attribute *attr, char *buf)
374 struct obd_device *obd = container_of(kobj, struct obd_device,
376 struct obd_import *imp;
377 struct ptlrpc_connection *conn;
380 with_imp_locked(obd, imp, count) {
381 conn = imp->imp_connection;
383 count = sprintf(buf, "%s\n", conn->c_remote_uuid.uuid);
385 count = sprintf(buf, "%s\n", "<none>");
390 EXPORT_SYMBOL(conn_uuid_show);
392 int lprocfs_server_uuid_seq_show(struct seq_file *m, void *data)
394 struct obd_device *obd = data;
395 struct obd_import *imp;
396 const char *imp_state_name = NULL;
399 LASSERT(obd != NULL);
400 with_imp_locked(obd, imp, rc) {
401 imp_state_name = ptlrpc_import_state_name(imp->imp_state);
402 seq_printf(m, "%s\t%s%s\n", obd2cli_tgt(obd), imp_state_name,
403 imp->imp_deactive ? "\tDEACTIVATED" : "");
408 EXPORT_SYMBOL(lprocfs_server_uuid_seq_show);
410 /** add up per-cpu counters */
413 * Lock statistics structure for access, possibly only on this CPU.
415 * The statistics struct may be allocated with per-CPU structures for
416 * efficient concurrent update (usually only on server-wide stats), or
417 * as a single global struct (e.g. for per-client or per-job statistics),
418 * so the required locking depends on the type of structure allocated.
420 * For per-CPU statistics, pin the thread to the current cpuid so that
421 * will only access the statistics for that CPU. If the stats structure
422 * for the current CPU has not been allocated (or previously freed),
423 * allocate it now. The per-CPU statistics do not need locking since
424 * the thread is pinned to the CPU during update.
426 * For global statistics, lock the stats structure to prevent concurrent update.
428 * \param[in] stats statistics structure to lock
429 * \param[in] opc type of operation:
430 * LPROCFS_GET_SMP_ID: "lock" and return current CPU index
431 * for incrementing statistics for that CPU
432 * LPROCFS_GET_NUM_CPU: "lock" and return number of used
433 * CPU indices to iterate over all indices
434 * \param[out] flags CPU interrupt saved state for IRQ-safe locking
436 * \retval cpuid of current thread or number of allocated structs
437 * \retval negative on error (only for opc LPROCFS_GET_SMP_ID + per-CPU stats)
439 int lprocfs_stats_lock(struct lprocfs_stats *stats,
440 enum lprocfs_stats_lock_ops opc,
441 unsigned long *flags)
443 if (stats->ls_flags & LPROCFS_STATS_FLAG_NOPERCPU) {
444 if (stats->ls_flags & LPROCFS_STATS_FLAG_IRQ_SAFE)
445 spin_lock_irqsave(&stats->ls_lock, *flags);
447 spin_lock(&stats->ls_lock);
448 return opc == LPROCFS_GET_NUM_CPU ? 1 : 0;
452 case LPROCFS_GET_SMP_ID: {
453 unsigned int cpuid = get_cpu();
455 if (unlikely(!stats->ls_percpu[cpuid])) {
456 int rc = lprocfs_stats_alloc_one(stats, cpuid);
465 case LPROCFS_GET_NUM_CPU:
466 return stats->ls_biggest_alloc_num;
473 * Unlock statistics structure after access.
475 * Unlock the lock acquired via lprocfs_stats_lock() for global statistics,
476 * or unpin this thread from the current cpuid for per-CPU statistics.
478 * This function must be called using the same arguments as used when calling
479 * lprocfs_stats_lock() so that the correct operation can be performed.
481 * \param[in] stats statistics structure to unlock
482 * \param[in] opc type of operation (current cpuid or number of structs)
483 * \param[in] flags CPU interrupt saved state for IRQ-safe locking
485 void lprocfs_stats_unlock(struct lprocfs_stats *stats,
486 enum lprocfs_stats_lock_ops opc,
487 unsigned long *flags)
489 if (stats->ls_flags & LPROCFS_STATS_FLAG_NOPERCPU) {
490 if (stats->ls_flags & LPROCFS_STATS_FLAG_IRQ_SAFE)
491 spin_unlock_irqrestore(&stats->ls_lock, *flags);
493 spin_unlock(&stats->ls_lock);
494 } else if (opc == LPROCFS_GET_SMP_ID) {
499 /** add up per-cpu counters */
500 void lprocfs_stats_collect(struct lprocfs_stats *stats, int idx,
501 struct lprocfs_counter *cnt)
503 unsigned int num_entry;
504 struct lprocfs_counter *percpu_cntr;
506 unsigned long flags = 0;
508 memset(cnt, 0, sizeof(*cnt));
511 /* set count to 1 to avoid divide-by-zero errs in callers */
516 cnt->lc_min = LC_MIN_INIT;
518 num_entry = lprocfs_stats_lock(stats, LPROCFS_GET_NUM_CPU, &flags);
520 for (i = 0; i < num_entry; i++) {
521 if (!stats->ls_percpu[i])
523 percpu_cntr = lprocfs_stats_counter_get(stats, i, idx);
525 cnt->lc_count += percpu_cntr->lc_count;
526 cnt->lc_sum += percpu_cntr->lc_sum;
527 if (percpu_cntr->lc_min < cnt->lc_min)
528 cnt->lc_min = percpu_cntr->lc_min;
529 if (percpu_cntr->lc_max > cnt->lc_max)
530 cnt->lc_max = percpu_cntr->lc_max;
531 cnt->lc_sumsquare += percpu_cntr->lc_sumsquare;
534 lprocfs_stats_unlock(stats, LPROCFS_GET_NUM_CPU, &flags);
537 static void obd_import_flags2str(struct obd_import *imp, struct seq_file *m)
541 if (imp->imp_obd->obd_no_recov) {
542 seq_printf(m, "no_recov");
546 flag2str(imp, invalid);
547 flag2str(imp, deactive);
548 flag2str(imp, replayable);
549 flag2str(imp, delayed_recovery);
550 flag2str(imp, vbr_failed);
551 flag2str(imp, pingable);
552 flag2str(imp, resend_replay);
553 flag2str(imp, no_pinger_recover);
554 flag2str(imp, connect_tried);
557 static const char *const obd_connect_names[] = {
558 "read_only", /* 0x01 */
559 "lov_index", /* 0x02 */
560 "connect_from_mds", /* 0x03 */
561 "write_grant", /* 0x04 */
562 "server_lock", /* 0x10 */
563 "version", /* 0x20 */
564 "request_portal", /* 0x40 */
567 "create_on_write", /* 0x200 */
568 "truncate_lock", /* 0x400 */
569 "initial_transno", /* 0x800 */
570 "inode_bit_locks", /* 0x1000 */
571 "barrier", /* 0x2000 */
572 "getattr_by_fid", /* 0x4000 */
573 "no_oh_for_devices", /* 0x8000 */
574 "remote_client", /* 0x10000 */
575 "remote_client_by_force", /* 0x20000 */
576 "max_byte_per_rpc", /* 0x40000 */
577 "64bit_qdata", /* 0x80000 */
578 "mds_capability", /* 0x100000 */
579 "oss_capability", /* 0x200000 */
580 "early_lock_cancel", /* 0x400000 */
581 "som", /* 0x800000 */
582 "adaptive_timeouts", /* 0x1000000 */
583 "lru_resize", /* 0x2000000 */
584 "mds_mds_connection", /* 0x4000000 */
585 "real_conn", /* 0x8000000 */
586 "change_qunit_size", /* 0x10000000 */
587 "alt_checksum_algorithm", /* 0x20000000 */
588 "fid_is_enabled", /* 0x40000000 */
589 "version_recovery", /* 0x80000000 */
590 "pools", /* 0x100000000 */
591 "grant_shrink", /* 0x200000000 */
592 "skip_orphan", /* 0x400000000 */
593 "large_ea", /* 0x800000000 */
594 "full20", /* 0x1000000000 */
595 "layout_lock", /* 0x2000000000 */
596 "64bithash", /* 0x4000000000 */
597 "object_max_bytes", /* 0x8000000000 */
598 "imp_recov", /* 0x10000000000 */
599 "jobstats", /* 0x20000000000 */
600 "umask", /* 0x40000000000 */
601 "einprogress", /* 0x80000000000 */
602 "grant_param", /* 0x100000000000 */
603 "flock_owner", /* 0x200000000000 */
604 "lvb_type", /* 0x400000000000 */
605 "nanoseconds_times", /* 0x800000000000 */
606 "lightweight_conn", /* 0x1000000000000 */
607 "short_io", /* 0x2000000000000 */
608 "pingless", /* 0x4000000000000 */
609 "flock_deadlock", /* 0x8000000000000 */
610 "disp_stripe", /* 0x10000000000000 */
611 "open_by_fid", /* 0x20000000000000 */
612 "lfsck", /* 0x40000000000000 */
613 "unknown", /* 0x80000000000000 */
614 "unlink_close", /* 0x100000000000000 */
615 "multi_mod_rpcs", /* 0x200000000000000 */
616 "dir_stripe", /* 0x400000000000000 */
617 "subtree", /* 0x800000000000000 */
618 "lockahead", /* 0x1000000000000000 */
619 "bulk_mbits", /* 0x2000000000000000 */
620 "compact_obdo", /* 0x4000000000000000 */
621 "second_flags", /* 0x8000000000000000 */
622 /* ocd_connect_flags2 names */
623 "file_secctx", /* 0x01 */
624 "lockaheadv2", /* 0x02 */
625 "dir_migrate", /* 0x04 */
626 "sum_statfs", /* 0x08 */
627 "overstriping", /* 0x10 */
630 "lock_convert", /* 0x80 */
631 "archive_id_array", /* 0x100 */
632 "increasing_xid", /* 0x200 */
633 "selinux_policy", /* 0x400 */
636 "crush", /* 0x2000 */
637 "async_discard", /* 0x4000 */
638 "client_encryption", /* 0x8000 */
639 "fidmap", /* 0x10000 */
640 "getattr_pfid", /* 0x20000 */
641 "lseek", /* 0x40000 */
642 "dom_lvb", /* 0x80000 */
643 "reply_mbits", /* 0x100000 */
644 "mode_convert", /* 0x200000 */
645 "batch_rpc", /* 0x400000 */
646 "pcc_ro", /* 0x800000 */
647 "mne_nid_type", /* 0x1000000 */
648 "lock_contend", /* 0x2000000 */
649 "atomic_open_lock", /* 0x4000000 */
650 "name_encryption", /* 0x8000000 */
651 "mkdir_replay", /* 0x10000000 */
652 "dmv_inherit", /* 0x20000000 */
653 "encryption_fid2path", /* 0x40000000 */
657 void obd_connect_seq_flags2str(struct seq_file *m, __u64 flags, __u64 flags2,
664 for (i = 0, mask = 1; i < 64; i++, mask <<= 1) {
666 seq_printf(m, "%s%s",
667 first ? "" : sep, obd_connect_names[i]);
672 if (flags & ~(mask - 1)) {
673 seq_printf(m, "%sunknown_%#llx",
674 first ? "" : sep, flags & ~(mask - 1));
678 if (!(flags & OBD_CONNECT_FLAGS2) || flags2 == 0)
681 for (i = 64, mask = 1; obd_connect_names[i] != NULL; i++, mask <<= 1) {
683 seq_printf(m, "%s%s",
684 first ? "" : sep, obd_connect_names[i]);
689 if (flags2 & ~(mask - 1)) {
690 seq_printf(m, "%sunknown2_%#llx",
691 first ? "" : sep, flags2 & ~(mask - 1));
695 EXPORT_SYMBOL(obd_connect_seq_flags2str);
697 int obd_connect_flags2str(char *page, int count, __u64 flags, __u64 flags2,
703 for (i = 0, mask = 1; i < 64; i++, mask <<= 1) {
705 ret += snprintf(page + ret, count - ret, "%s%s",
706 ret ? sep : "", obd_connect_names[i]);
709 if (flags & ~(mask - 1))
710 ret += snprintf(page + ret, count - ret,
712 ret ? sep : "", flags & ~(mask - 1));
714 if (!(flags & OBD_CONNECT_FLAGS2) || flags2 == 0)
717 for (i = 64, mask = 1; obd_connect_names[i] != NULL; i++, mask <<= 1) {
719 ret += snprintf(page + ret, count - ret, "%s%s",
720 ret ? sep : "", obd_connect_names[i]);
723 if (flags2 & ~(mask - 1))
724 ret += snprintf(page + ret, count - ret,
726 ret ? sep : "", flags2 & ~(mask - 1));
730 EXPORT_SYMBOL(obd_connect_flags2str);
733 obd_connect_data_seqprint(struct seq_file *m, struct obd_connect_data *ocd)
737 LASSERT(ocd != NULL);
738 flags = ocd->ocd_connect_flags;
740 seq_printf(m, " connect_data:\n"
743 ocd->ocd_connect_flags,
745 if (flags & OBD_CONNECT_VERSION)
746 seq_printf(m, " target_version: %u.%u.%u.%u\n",
747 OBD_OCD_VERSION_MAJOR(ocd->ocd_version),
748 OBD_OCD_VERSION_MINOR(ocd->ocd_version),
749 OBD_OCD_VERSION_PATCH(ocd->ocd_version),
750 OBD_OCD_VERSION_FIX(ocd->ocd_version));
751 if (flags & OBD_CONNECT_MDS)
752 seq_printf(m, " mdt_index: %d\n", ocd->ocd_group);
753 if (flags & OBD_CONNECT_GRANT)
754 seq_printf(m, " initial_grant: %d\n", ocd->ocd_grant);
755 if (flags & OBD_CONNECT_INDEX)
756 seq_printf(m, " target_index: %u\n", ocd->ocd_index);
757 if (flags & OBD_CONNECT_BRW_SIZE)
758 seq_printf(m, " max_brw_size: %d\n", ocd->ocd_brw_size);
759 if (flags & OBD_CONNECT_IBITS)
760 seq_printf(m, " ibits_known: %#llx\n",
761 ocd->ocd_ibits_known);
762 if (flags & OBD_CONNECT_GRANT_PARAM)
763 seq_printf(m, " grant_block_size: %d\n"
764 " grant_inode_size: %d\n"
765 " grant_max_extent_size: %d\n"
766 " grant_extent_tax: %d\n",
767 1 << ocd->ocd_grant_blkbits,
768 1 << ocd->ocd_grant_inobits,
769 ocd->ocd_grant_max_blks << ocd->ocd_grant_blkbits,
770 ocd->ocd_grant_tax_kb << 10);
771 if (flags & OBD_CONNECT_TRANSNO)
772 seq_printf(m, " first_transno: %#llx\n",
774 if (flags & OBD_CONNECT_CKSUM)
775 seq_printf(m, " cksum_types: %#x\n",
776 ocd->ocd_cksum_types);
777 if (flags & OBD_CONNECT_MAX_EASIZE)
778 seq_printf(m, " max_easize: %d\n", ocd->ocd_max_easize);
779 if (flags & OBD_CONNECT_MAXBYTES)
780 seq_printf(m, " max_object_bytes: %llu\n",
782 if (flags & OBD_CONNECT_MULTIMODRPCS)
783 seq_printf(m, " max_mod_rpcs: %hu\n",
784 ocd->ocd_maxmodrpcs);
787 static void lprocfs_import_seq_show_locked(struct seq_file *m,
788 struct obd_device *obd,
789 struct obd_import *imp)
791 char nidstr[LNET_NIDSTR_SIZE];
792 struct lprocfs_counter ret;
793 struct lprocfs_counter_header *header;
794 struct obd_import_conn *conn;
795 struct obd_connect_data *ocd;
800 ocd = &imp->imp_connect_data;
802 seq_printf(m, "import:\n"
806 " connect_flags: [ ",
809 ptlrpc_import_state_name(imp->imp_state));
810 obd_connect_seq_flags2str(m, imp->imp_connect_data.ocd_connect_flags,
811 imp->imp_connect_data.ocd_connect_flags2,
813 seq_printf(m, " ]\n");
814 obd_connect_data_seqprint(m, ocd);
815 seq_printf(m, " import_flags: [ ");
816 obd_import_flags2str(imp, m);
820 " failover_nids: [ ");
821 spin_lock(&imp->imp_lock);
823 list_for_each_entry(conn, &imp->imp_conn_list, oic_item) {
824 libcfs_nidstr_r(&conn->oic_conn->c_peer.nid,
825 nidstr, sizeof(nidstr));
826 seq_printf(m, "%s%s", j ? ", " : "", nidstr);
829 if (imp->imp_connection)
830 libcfs_nidstr_r(&imp->imp_connection->c_peer.nid,
831 nidstr, sizeof(nidstr));
833 strncpy(nidstr, "<none>", sizeof(nidstr));
835 " current_connection: %s\n"
836 " connection_attempts: %u\n"
838 " in-progress_invalidations: %u\n"
843 atomic_read(&imp->imp_inval_count),
844 ktime_get_real_seconds() - imp->imp_last_reply_time);
845 spin_unlock(&imp->imp_lock);
847 if (!obd->obd_svc_stats)
850 header = &obd->obd_svc_stats->ls_cnt_header[PTLRPC_REQWAIT_CNTR];
851 lprocfs_stats_collect(obd->obd_svc_stats, PTLRPC_REQWAIT_CNTR, &ret);
852 if (ret.lc_count != 0)
853 ret.lc_sum = div64_s64(ret.lc_sum, ret.lc_count);
856 seq_printf(m, " rpcs:\n"
858 " unregistering: %u\n"
860 " avg_waittime: %llu %s\n",
861 atomic_read(&imp->imp_inflight),
862 atomic_read(&imp->imp_unregistering),
863 atomic_read(&imp->imp_timeouts),
864 ret.lc_sum, header->lc_units);
867 for(j = 0; j < IMP_AT_MAX_PORTALS; j++) {
868 if (imp->imp_at.iat_portal[j] == 0)
870 k = max_t(unsigned int, k,
871 at_get(&imp->imp_at.iat_service_estimate[j]));
873 seq_printf(m, " service_estimates:\n"
874 " services: %u sec\n"
875 " network: %d sec\n",
877 at_get(&imp->imp_at.iat_net_latency));
879 seq_printf(m, " transactions:\n"
880 " last_replay: %llu\n"
881 " peer_committed: %llu\n"
882 " last_checked: %llu\n",
883 imp->imp_last_replay_transno,
884 imp->imp_peer_committed_transno,
885 imp->imp_last_transno_checked);
888 for (rw = 0; rw <= 1; rw++) {
889 lprocfs_stats_collect(obd->obd_svc_stats,
890 PTLRPC_LAST_CNTR + BRW_READ_BYTES + rw,
892 if (ret.lc_sum > 0 && ret.lc_count > 0) {
893 ret.lc_sum = div64_s64(ret.lc_sum, ret.lc_count);
894 seq_printf(m, " %s_data_averages:\n"
895 " bytes_per_rpc: %llu\n",
896 rw ? "write" : "read",
900 j = opcode_offset(OST_READ + rw) + EXTRA_MAX_OPCODES;
901 header = &obd->obd_svc_stats->ls_cnt_header[j];
902 lprocfs_stats_collect(obd->obd_svc_stats, j, &ret);
903 if (ret.lc_sum > 0 && ret.lc_count != 0) {
904 ret.lc_sum = div64_s64(ret.lc_sum, ret.lc_count);
905 seq_printf(m, " %s_per_rpc: %llu\n",
906 header->lc_units, ret.lc_sum);
909 seq_printf(m, " MB_per_sec: %u.%.02u\n",
910 k / j, (100 * k / j) % 100);
915 int lprocfs_import_seq_show(struct seq_file *m, void *data)
917 struct obd_device *obd = (struct obd_device *)data;
918 struct obd_import *imp;
921 LASSERT(obd != NULL);
922 with_imp_locked(obd, imp, rv)
923 lprocfs_import_seq_show_locked(m, obd, imp);
926 EXPORT_SYMBOL(lprocfs_import_seq_show);
928 int lprocfs_state_seq_show(struct seq_file *m, void *data)
930 struct obd_device *obd = (struct obd_device *)data;
931 struct obd_import *imp;
935 LASSERT(obd != NULL);
936 with_imp_locked(obd, imp, rc) {
937 seq_printf(m, "current_state: %s\n",
938 ptlrpc_import_state_name(imp->imp_state));
939 seq_printf(m, "state_history:\n");
940 k = imp->imp_state_hist_idx;
941 for (j = 0; j < IMP_STATE_HIST_LEN; j++) {
942 struct import_state_hist *ish =
943 &imp->imp_state_hist[(k + j) % IMP_STATE_HIST_LEN];
944 if (ish->ish_state == 0)
946 seq_printf(m, " - [ %lld, %s ]\n", (s64)ish->ish_time,
947 ptlrpc_import_state_name(ish->ish_state));
953 EXPORT_SYMBOL(lprocfs_state_seq_show);
955 int lprocfs_at_hist_helper(struct seq_file *m, struct adaptive_timeout *at)
958 for (i = 0; i < AT_BINS; i++)
959 seq_printf(m, "%3u ", at->at_hist[i]);
963 EXPORT_SYMBOL(lprocfs_at_hist_helper);
965 /* See also ptlrpc_lprocfs_timeouts_show_seq */
966 static void lprocfs_timeouts_seq_show_locked(struct seq_file *m,
967 struct obd_device *obd,
968 struct obd_import *imp)
970 timeout_t cur_timeout, worst_timeout;
971 time64_t now, worst_timestamp;
974 LASSERT(obd != NULL);
976 now = ktime_get_real_seconds();
978 /* Some network health info for kicks */
979 seq_printf(m, "%-10s : %lld, %llds ago\n",
980 "last reply", (s64)imp->imp_last_reply_time,
981 (s64)(now - imp->imp_last_reply_time));
983 cur_timeout = at_get(&imp->imp_at.iat_net_latency);
984 worst_timeout = imp->imp_at.iat_net_latency.at_worst_timeout_ever;
985 worst_timestamp = imp->imp_at.iat_net_latency.at_worst_timestamp;
986 seq_printf(m, "%-10s : cur %3u worst %3u (at %lld, %llds ago) ",
987 "network", cur_timeout, worst_timeout, worst_timestamp,
988 now - worst_timestamp);
989 lprocfs_at_hist_helper(m, &imp->imp_at.iat_net_latency);
991 for(i = 0; i < IMP_AT_MAX_PORTALS; i++) {
992 struct adaptive_timeout *service_est;
994 if (imp->imp_at.iat_portal[i] == 0)
997 service_est = &imp->imp_at.iat_service_estimate[i];
998 cur_timeout = at_get(service_est);
999 worst_timeout = service_est->at_worst_timeout_ever;
1000 worst_timestamp = service_est->at_worst_timestamp;
1001 seq_printf(m, "portal %-2d : cur %3u worst %3u (at %lld, %llds ago) ",
1002 imp->imp_at.iat_portal[i], cur_timeout,
1003 worst_timeout, worst_timestamp,
1004 now - worst_timestamp);
1005 lprocfs_at_hist_helper(m, service_est);
1009 int lprocfs_timeouts_seq_show(struct seq_file *m, void *data)
1011 struct obd_device *obd = (struct obd_device *)data;
1012 struct obd_import *imp;
1015 with_imp_locked(obd, imp, rc)
1016 lprocfs_timeouts_seq_show_locked(m, obd, imp);
1019 EXPORT_SYMBOL(lprocfs_timeouts_seq_show);
1021 int lprocfs_connect_flags_seq_show(struct seq_file *m, void *data)
1023 struct obd_device *obd = data;
1026 struct obd_import *imp;
1029 with_imp_locked(obd, imp, rc) {
1030 flags = imp->imp_connect_data.ocd_connect_flags;
1031 flags2 = imp->imp_connect_data.ocd_connect_flags2;
1032 seq_printf(m, "flags=%#llx\n", flags);
1033 seq_printf(m, "flags2=%#llx\n", flags2);
1034 obd_connect_seq_flags2str(m, flags, flags2, "\n");
1035 seq_printf(m, "\n");
1040 EXPORT_SYMBOL(lprocfs_connect_flags_seq_show);
1042 static const struct attribute *obd_def_uuid_attrs[] = {
1043 &lustre_attr_uuid.attr,
1047 static const struct attribute *obd_def_attrs[] = {
1048 &lustre_attr_blocksize.attr,
1049 &lustre_attr_kbytestotal.attr,
1050 &lustre_attr_kbytesfree.attr,
1051 &lustre_attr_kbytesavail.attr,
1052 &lustre_attr_filestotal.attr,
1053 &lustre_attr_filesfree.attr,
1054 &lustre_attr_uuid.attr,
1058 static void obd_sysfs_release(struct kobject *kobj)
1060 struct obd_device *obd = container_of(kobj, struct obd_device,
1063 complete(&obd->obd_kobj_unregister);
1066 int lprocfs_obd_setup(struct obd_device *obd, bool uuid_only)
1068 struct ldebugfs_vars *debugfs_vars = NULL;
1071 if (!obd || obd->obd_magic != OBD_DEVICE_MAGIC)
1074 rc = kobject_set_name(&obd->obd_kset.kobj, "%s", obd->obd_name);
1078 obd->obd_ktype.sysfs_ops = &lustre_sysfs_ops;
1079 obd->obd_ktype.release = obd_sysfs_release;
1081 obd->obd_kset.kobj.parent = &obd->obd_type->typ_kobj;
1082 obd->obd_kset.kobj.ktype = &obd->obd_ktype;
1083 init_completion(&obd->obd_kobj_unregister);
1084 rc = kset_register(&obd->obd_kset);
1089 obd->obd_attrs = obd_def_uuid_attrs;
1091 obd->obd_attrs = obd_def_attrs;
1093 rc = sysfs_create_files(&obd->obd_kset.kobj, obd->obd_attrs);
1095 kset_unregister(&obd->obd_kset);
1099 if (!obd->obd_type->typ_procroot)
1100 debugfs_vars = obd->obd_debugfs_vars;
1101 obd->obd_debugfs_entry = debugfs_create_dir(
1102 obd->obd_name, obd->obd_type->typ_debugfs_entry);
1103 ldebugfs_add_vars(obd->obd_debugfs_entry, debugfs_vars, obd);
1105 if (obd->obd_proc_entry || !obd->obd_type->typ_procroot)
1106 GOTO(already_registered, rc);
1108 obd->obd_proc_entry = lprocfs_register(obd->obd_name,
1109 obd->obd_type->typ_procroot,
1110 obd->obd_vars, obd);
1111 if (IS_ERR(obd->obd_proc_entry)) {
1112 rc = PTR_ERR(obd->obd_proc_entry);
1113 CERROR("error %d setting up lprocfs for %s\n",rc,obd->obd_name);
1114 obd->obd_proc_entry = NULL;
1116 debugfs_remove_recursive(obd->obd_debugfs_entry);
1117 obd->obd_debugfs_entry = NULL;
1119 sysfs_remove_files(&obd->obd_kset.kobj, obd->obd_attrs);
1120 obd->obd_attrs = NULL;
1121 kset_unregister(&obd->obd_kset);
1127 EXPORT_SYMBOL(lprocfs_obd_setup);
1129 int lprocfs_obd_cleanup(struct obd_device *obd)
1134 if (obd->obd_proc_exports_entry) {
1135 /* Should be no exports left */
1136 lprocfs_remove(&obd->obd_proc_exports_entry);
1137 obd->obd_proc_exports_entry = NULL;
1140 if (obd->obd_proc_entry) {
1141 lprocfs_remove(&obd->obd_proc_entry);
1142 obd->obd_proc_entry = NULL;
1145 debugfs_remove_recursive(obd->obd_debugfs_entry);
1146 obd->obd_debugfs_entry = NULL;
1148 /* obd device never allocated a kset */
1149 if (!obd->obd_kset.kobj.state_initialized)
1152 if (obd->obd_attrs) {
1153 sysfs_remove_files(&obd->obd_kset.kobj, obd->obd_attrs);
1154 obd->obd_attrs = NULL;
1157 kset_unregister(&obd->obd_kset);
1158 wait_for_completion(&obd->obd_kobj_unregister);
1161 EXPORT_SYMBOL(lprocfs_obd_cleanup);
1163 int lprocfs_stats_alloc_one(struct lprocfs_stats *stats, unsigned int cpuid)
1165 struct lprocfs_counter *cntr;
1166 unsigned int percpusize;
1168 unsigned long flags = 0;
1171 LASSERT(stats->ls_percpu[cpuid] == NULL);
1172 LASSERT((stats->ls_flags & LPROCFS_STATS_FLAG_NOPERCPU) == 0);
1174 percpusize = lprocfs_stats_counter_size(stats);
1175 LIBCFS_ALLOC_ATOMIC(stats->ls_percpu[cpuid], percpusize);
1176 if (stats->ls_percpu[cpuid]) {
1178 if (unlikely(stats->ls_biggest_alloc_num <= cpuid)) {
1179 if (stats->ls_flags & LPROCFS_STATS_FLAG_IRQ_SAFE)
1180 spin_lock_irqsave(&stats->ls_lock, flags);
1182 spin_lock(&stats->ls_lock);
1183 if (stats->ls_biggest_alloc_num <= cpuid)
1184 stats->ls_biggest_alloc_num = cpuid + 1;
1185 if (stats->ls_flags & LPROCFS_STATS_FLAG_IRQ_SAFE) {
1186 spin_unlock_irqrestore(&stats->ls_lock, flags);
1188 spin_unlock(&stats->ls_lock);
1191 /* initialize the ls_percpu[cpuid] non-zero counter */
1192 for (i = 0; i < stats->ls_num; ++i) {
1193 cntr = lprocfs_stats_counter_get(stats, cpuid, i);
1194 cntr->lc_min = LC_MIN_INIT;
1200 struct lprocfs_stats *lprocfs_alloc_stats(unsigned int num,
1201 enum lprocfs_stats_flags flags)
1203 struct lprocfs_stats *stats;
1204 unsigned int num_entry;
1205 unsigned int percpusize = 0;
1211 if (lprocfs_no_percpu_stats != 0)
1212 flags |= LPROCFS_STATS_FLAG_NOPERCPU;
1214 if (flags & LPROCFS_STATS_FLAG_NOPERCPU)
1217 num_entry = num_possible_cpus();
1219 /* alloc percpu pointers for all possible cpu slots */
1220 LIBCFS_ALLOC(stats, offsetof(typeof(*stats), ls_percpu[num_entry]));
1224 stats->ls_num = num;
1225 stats->ls_flags = flags;
1226 stats->ls_init = ktime_get_real();
1227 spin_lock_init(&stats->ls_lock);
1229 /* alloc num of counter headers */
1230 CFS_ALLOC_PTR_ARRAY(stats->ls_cnt_header, stats->ls_num);
1231 if (!stats->ls_cnt_header)
1234 if ((flags & LPROCFS_STATS_FLAG_NOPERCPU) != 0) {
1235 /* contains only one set counters */
1236 percpusize = lprocfs_stats_counter_size(stats);
1237 LIBCFS_ALLOC_ATOMIC(stats->ls_percpu[0], percpusize);
1238 if (!stats->ls_percpu[0])
1240 stats->ls_biggest_alloc_num = 1;
1241 } else if ((flags & LPROCFS_STATS_FLAG_IRQ_SAFE) != 0) {
1242 /* alloc all percpu data, currently only obd_memory use this */
1243 for (i = 0; i < num_entry; ++i)
1244 if (lprocfs_stats_alloc_one(stats, i) < 0)
1251 lprocfs_free_stats(&stats);
1254 EXPORT_SYMBOL(lprocfs_alloc_stats);
1256 void lprocfs_free_stats(struct lprocfs_stats **statsh)
1258 struct lprocfs_stats *stats = *statsh;
1259 unsigned int num_entry;
1260 unsigned int percpusize;
1263 if (!stats || stats->ls_num == 0)
1267 if (stats->ls_flags & LPROCFS_STATS_FLAG_NOPERCPU)
1270 num_entry = num_possible_cpus();
1272 percpusize = lprocfs_stats_counter_size(stats);
1273 for (i = 0; i < num_entry; i++)
1274 if (stats->ls_percpu[i])
1275 LIBCFS_FREE(stats->ls_percpu[i], percpusize);
1277 if (stats->ls_cnt_header) {
1278 for (i = 0; i < stats->ls_num; i++)
1279 if (stats->ls_cnt_header[i].lc_hist != NULL)
1280 CFS_FREE_PTR(stats->ls_cnt_header[i].lc_hist);
1281 CFS_FREE_PTR_ARRAY(stats->ls_cnt_header, stats->ls_num);
1284 LIBCFS_FREE(stats, offsetof(typeof(*stats), ls_percpu[num_entry]));
1286 EXPORT_SYMBOL(lprocfs_free_stats);
1288 u64 lprocfs_stats_collector(struct lprocfs_stats *stats, int idx,
1289 enum lprocfs_fields_flags field)
1291 unsigned long flags = 0;
1292 unsigned int num_cpu;
1298 num_cpu = lprocfs_stats_lock(stats, LPROCFS_GET_NUM_CPU, &flags);
1299 for (i = 0; i < num_cpu; i++) {
1300 struct lprocfs_counter *cntr;
1302 if (!stats->ls_percpu[i])
1305 cntr = lprocfs_stats_counter_get(stats, i, idx);
1306 ret += lprocfs_read_helper(cntr, &stats->ls_cnt_header[idx],
1307 stats->ls_flags, field);
1309 lprocfs_stats_unlock(stats, LPROCFS_GET_NUM_CPU, &flags);
1312 EXPORT_SYMBOL(lprocfs_stats_collector);
1314 void lprocfs_clear_stats(struct lprocfs_stats *stats)
1316 struct lprocfs_counter *percpu_cntr;
1318 unsigned int num_entry;
1319 unsigned long flags = 0;
1321 num_entry = lprocfs_stats_lock(stats, LPROCFS_GET_NUM_CPU, &flags);
1323 /* clear histogram if exists */
1324 for (j = 0; j < stats->ls_num; j++) {
1325 struct obd_histogram *hist = stats->ls_cnt_header[j].lc_hist;
1328 lprocfs_oh_clear(hist);
1331 for (i = 0; i < num_entry; i++) {
1332 if (!stats->ls_percpu[i])
1334 for (j = 0; j < stats->ls_num; j++) {
1335 percpu_cntr = lprocfs_stats_counter_get(stats, i, j);
1336 percpu_cntr->lc_count = 0;
1337 percpu_cntr->lc_min = LC_MIN_INIT;
1338 percpu_cntr->lc_max = 0;
1339 percpu_cntr->lc_sumsquare = 0;
1340 percpu_cntr->lc_sum = 0;
1341 if (stats->ls_flags & LPROCFS_STATS_FLAG_IRQ_SAFE)
1342 percpu_cntr->lc_sum_irq = 0;
1345 stats->ls_init = ktime_get_real();
1347 lprocfs_stats_unlock(stats, LPROCFS_GET_NUM_CPU, &flags);
1349 EXPORT_SYMBOL(lprocfs_clear_stats);
1351 static ssize_t lprocfs_stats_seq_write(struct file *file,
1352 const char __user *buf,
1353 size_t len, loff_t *off)
1355 struct seq_file *seq = file->private_data;
1356 struct lprocfs_stats *stats = seq->private;
1358 lprocfs_clear_stats(stats);
1363 static void *lprocfs_stats_seq_start(struct seq_file *p, loff_t *pos)
1365 struct lprocfs_stats *stats = p->private;
1367 return (*pos < stats->ls_num) ? pos : NULL;
1370 static void lprocfs_stats_seq_stop(struct seq_file *p, void *v)
1374 static void *lprocfs_stats_seq_next(struct seq_file *p, void *v, loff_t *pos)
1378 return lprocfs_stats_seq_start(p, pos);
1382 * print header of stats including snapshot_time, start_time and elapsed_time.
1384 * \param seq the file to print content to
1385 * \param now end time to calculate elapsed_time
1386 * \param ts_init start time to calculate elapsed_time
1387 * \param width the width of key to align them well
1388 * \param colon "" or ":"
1389 * \param show_units show units or not
1390 * \param prefix prefix (indent) before printing each line of header
1391 * to align them with other content
1393 void lprocfs_stats_header(struct seq_file *seq, ktime_t now, ktime_t ts_init,
1394 int width, const char *colon, bool show_units,
1397 const char *units = show_units ? " secs.nsecs" : "";
1398 struct timespec64 ts;
1401 field = (colon && colon[0]) ? "snapshot_time:" : "snapshot_time";
1402 ts = ktime_to_timespec64(now);
1403 seq_printf(seq, "%s%-*s %llu.%09lu%s\n", prefix, width, field,
1404 (s64)ts.tv_sec, ts.tv_nsec, units);
1406 field = (colon && colon[0]) ? "start_time:" : "start_time";
1407 ts = ktime_to_timespec64(ts_init);
1408 seq_printf(seq, "%s%-*s %llu.%09lu%s\n", prefix, width, field,
1409 (s64)ts.tv_sec, ts.tv_nsec, units);
1411 field = (colon && colon[0]) ? "elapsed_time:" : "elapsed_time";
1412 ts = ktime_to_timespec64(ktime_sub(now, ts_init));
1413 seq_printf(seq, "%s%-*s %llu.%09lu%s\n", prefix, width, field,
1414 (s64)ts.tv_sec, ts.tv_nsec, units);
1416 EXPORT_SYMBOL(lprocfs_stats_header);
1418 /* seq file export of one lprocfs counter */
1419 static int lprocfs_stats_seq_show(struct seq_file *p, void *v)
1421 struct lprocfs_stats *stats = p->private;
1422 struct lprocfs_counter_header *hdr;
1423 struct lprocfs_counter ctr;
1424 int idx = *(loff_t *)v;
1427 lprocfs_stats_header(p, ktime_get_real(), stats->ls_init, 25,
1430 hdr = &stats->ls_cnt_header[idx];
1431 lprocfs_stats_collect(stats, idx, &ctr);
1433 if (ctr.lc_count == 0)
1436 seq_printf(p, "%-25s %lld samples [%s]", hdr->lc_name,
1437 ctr.lc_count, hdr->lc_units);
1439 if ((hdr->lc_config & LPROCFS_CNTR_AVGMINMAX) && ctr.lc_count > 0) {
1440 seq_printf(p, " %lld %lld %lld",
1441 ctr.lc_min, ctr.lc_max, ctr.lc_sum);
1442 if (hdr->lc_config & LPROCFS_CNTR_STDDEV)
1443 seq_printf(p, " %llu", ctr.lc_sumsquare);
1449 static const struct seq_operations lprocfs_stats_seq_sops = {
1450 .start = lprocfs_stats_seq_start,
1451 .stop = lprocfs_stats_seq_stop,
1452 .next = lprocfs_stats_seq_next,
1453 .show = lprocfs_stats_seq_show,
1456 static int lprocfs_stats_seq_open(struct inode *inode, struct file *file)
1458 struct seq_file *seq;
1461 rc = seq_open(file, &lprocfs_stats_seq_sops);
1464 seq = file->private_data;
1465 seq->private = inode->i_private ? inode->i_private : PDE_DATA(inode);
1469 const struct file_operations ldebugfs_stats_seq_fops = {
1470 .owner = THIS_MODULE,
1471 .open = lprocfs_stats_seq_open,
1473 .write = lprocfs_stats_seq_write,
1474 .llseek = seq_lseek,
1475 .release = lprocfs_seq_release,
1477 EXPORT_SYMBOL(ldebugfs_stats_seq_fops);
1479 static const struct proc_ops lprocfs_stats_seq_fops = {
1480 PROC_OWNER(THIS_MODULE)
1481 .proc_open = lprocfs_stats_seq_open,
1482 .proc_read = seq_read,
1483 .proc_write = lprocfs_stats_seq_write,
1484 .proc_lseek = seq_lseek,
1485 .proc_release = lprocfs_seq_release,
1488 int lprocfs_register_stats(struct proc_dir_entry *root, const char *name,
1489 struct lprocfs_stats *stats)
1491 struct proc_dir_entry *entry;
1492 LASSERT(root != NULL);
1494 entry = proc_create_data(name, 0644, root,
1495 &lprocfs_stats_seq_fops, stats);
1500 EXPORT_SYMBOL(lprocfs_register_stats);
1502 static const char *lprocfs_counter_config_units(const char *name,
1503 enum lprocfs_counter_config config)
1507 switch (config & LPROCFS_TYPE_MASK) {
1509 units = "reqs"; break;
1510 case LPROCFS_TYPE_BYTES:
1511 units = "bytes"; break;
1512 case LPROCFS_TYPE_PAGES:
1513 units = "pages"; break;
1514 case LPROCFS_TYPE_LOCKS:
1515 units = "locks"; break;
1516 case LPROCFS_TYPE_LOCKSPS:
1517 units = "locks/s"; break;
1518 case LPROCFS_TYPE_SECS:
1519 units = "secs"; break;
1520 case LPROCFS_TYPE_USECS:
1521 units = "usecs"; break;
1527 void lprocfs_counter_init_units(struct lprocfs_stats *stats, int index,
1528 enum lprocfs_counter_config config,
1529 const char *name, const char *units)
1531 struct lprocfs_counter_header *header;
1532 struct lprocfs_counter *percpu_cntr;
1533 unsigned long flags = 0;
1535 unsigned int num_cpu;
1537 LASSERT(stats != NULL);
1539 header = &stats->ls_cnt_header[index];
1540 LASSERTF(header != NULL, "Failed to allocate stats header:[%d]%s/%s\n",
1541 index, name, units);
1543 header->lc_config = config;
1544 header->lc_name = name;
1545 header->lc_units = units;
1547 if (config & LPROCFS_CNTR_HISTOGRAM) {
1548 CFS_ALLOC_PTR(stats->ls_cnt_header[index].lc_hist);
1549 if (stats->ls_cnt_header[index].lc_hist == NULL)
1550 CERROR("LprocFS: Failed to allocate histogram:[%d]%s/%s\n",
1551 index, name, units);
1553 spin_lock_init(&stats->ls_cnt_header[index].lc_hist->oh_lock);
1555 num_cpu = lprocfs_stats_lock(stats, LPROCFS_GET_NUM_CPU, &flags);
1556 for (i = 0; i < num_cpu; ++i) {
1557 if (!stats->ls_percpu[i])
1559 percpu_cntr = lprocfs_stats_counter_get(stats, i, index);
1560 percpu_cntr->lc_count = 0;
1561 percpu_cntr->lc_min = LC_MIN_INIT;
1562 percpu_cntr->lc_max = 0;
1563 percpu_cntr->lc_sumsquare = 0;
1564 percpu_cntr->lc_sum = 0;
1565 if ((stats->ls_flags & LPROCFS_STATS_FLAG_IRQ_SAFE) != 0)
1566 percpu_cntr->lc_sum_irq = 0;
1568 lprocfs_stats_unlock(stats, LPROCFS_GET_NUM_CPU, &flags);
1570 EXPORT_SYMBOL(lprocfs_counter_init_units);
1572 void lprocfs_counter_init(struct lprocfs_stats *stats, int index,
1573 enum lprocfs_counter_config config,
1576 lprocfs_counter_init_units(stats, index, config, name,
1577 lprocfs_counter_config_units(name, config));
1579 EXPORT_SYMBOL(lprocfs_counter_init);
1581 static const char * const mps_stats[] = {
1582 [LPROC_MD_CLOSE] = "close",
1583 [LPROC_MD_CREATE] = "create",
1584 [LPROC_MD_ENQUEUE] = "enqueue",
1585 [LPROC_MD_GETATTR] = "getattr",
1586 [LPROC_MD_INTENT_LOCK] = "intent_lock",
1587 [LPROC_MD_LINK] = "link",
1588 [LPROC_MD_RENAME] = "rename",
1589 [LPROC_MD_SETATTR] = "setattr",
1590 [LPROC_MD_FSYNC] = "fsync",
1591 [LPROC_MD_READ_PAGE] = "read_page",
1592 [LPROC_MD_UNLINK] = "unlink",
1593 [LPROC_MD_SETXATTR] = "setxattr",
1594 [LPROC_MD_GETXATTR] = "getxattr",
1595 [LPROC_MD_INTENT_GETATTR_ASYNC] = "intent_getattr_async",
1596 [LPROC_MD_REVALIDATE_LOCK] = "revalidate_lock",
1599 int lprocfs_alloc_md_stats(struct obd_device *obd,
1600 unsigned int num_private_stats)
1602 struct lprocfs_stats *stats;
1603 unsigned int num_stats;
1607 * TODO Ensure that this function is only used where
1608 * appropriate by adding an assertion to the effect that
1609 * obd->obd_type->typ_md_ops is not NULL. We can't do this now
1610 * because mdt_procfs_init() uses this function to allocate
1611 * the stats backing /proc/fs/lustre/mdt/.../md_stats but the
1612 * mdt layer does not use the md_ops interface. This is
1613 * confusing and a waste of memory. See LU-2484.
1615 LASSERT(obd->obd_proc_entry != NULL);
1616 LASSERT(obd->obd_md_stats == NULL);
1618 num_stats = ARRAY_SIZE(mps_stats) + num_private_stats;
1619 stats = lprocfs_alloc_stats(num_stats, 0);
1623 for (i = 0; i < ARRAY_SIZE(mps_stats); i++) {
1624 lprocfs_counter_init(stats, i, LPROCFS_TYPE_REQS,
1626 if (!stats->ls_cnt_header[i].lc_name) {
1627 CERROR("Missing md_stat initializer md_op operation at offset %d. Aborting.\n",
1633 rc = lprocfs_register_stats(obd->obd_proc_entry, "md_stats", stats);
1635 lprocfs_free_stats(&stats);
1637 obd->obd_md_stats = stats;
1642 EXPORT_SYMBOL(lprocfs_alloc_md_stats);
1644 void lprocfs_free_md_stats(struct obd_device *obd)
1646 struct lprocfs_stats *stats = obd->obd_md_stats;
1649 obd->obd_md_stats = NULL;
1650 lprocfs_free_stats(&stats);
1653 EXPORT_SYMBOL(lprocfs_free_md_stats);
1655 void lprocfs_init_ldlm_stats(struct lprocfs_stats *ldlm_stats)
1657 lprocfs_counter_init(ldlm_stats, LDLM_ENQUEUE - LDLM_FIRST_OPC,
1658 LPROCFS_TYPE_REQS, "ldlm_enqueue");
1659 lprocfs_counter_init(ldlm_stats, LDLM_CONVERT - LDLM_FIRST_OPC,
1660 LPROCFS_TYPE_REQS, "ldlm_convert");
1661 lprocfs_counter_init(ldlm_stats, LDLM_CANCEL - LDLM_FIRST_OPC,
1662 LPROCFS_TYPE_REQS, "ldlm_cancel");
1663 lprocfs_counter_init(ldlm_stats, LDLM_BL_CALLBACK - LDLM_FIRST_OPC,
1664 LPROCFS_TYPE_REQS, "ldlm_bl_callback");
1665 lprocfs_counter_init(ldlm_stats, LDLM_CP_CALLBACK - LDLM_FIRST_OPC,
1666 LPROCFS_TYPE_REQS, "ldlm_cp_callback");
1667 lprocfs_counter_init(ldlm_stats, LDLM_GL_CALLBACK - LDLM_FIRST_OPC,
1668 LPROCFS_TYPE_REQS, "ldlm_gl_callback");
1670 EXPORT_SYMBOL(lprocfs_init_ldlm_stats);
1672 __s64 lprocfs_read_helper(struct lprocfs_counter *lc,
1673 struct lprocfs_counter_header *header,
1674 enum lprocfs_stats_flags flags,
1675 enum lprocfs_fields_flags field)
1683 case LPROCFS_FIELDS_FLAGS_CONFIG:
1684 ret = header->lc_config;
1686 case LPROCFS_FIELDS_FLAGS_SUM:
1688 if ((flags & LPROCFS_STATS_FLAG_IRQ_SAFE) != 0)
1689 ret += lc->lc_sum_irq;
1691 case LPROCFS_FIELDS_FLAGS_MIN:
1694 case LPROCFS_FIELDS_FLAGS_MAX:
1697 case LPROCFS_FIELDS_FLAGS_AVG:
1698 ret = div64_u64((flags & LPROCFS_STATS_FLAG_IRQ_SAFE ?
1699 lc->lc_sum_irq : 0) + lc->lc_sum,
1702 case LPROCFS_FIELDS_FLAGS_SUMSQUARE:
1703 ret = lc->lc_sumsquare;
1705 case LPROCFS_FIELDS_FLAGS_COUNT:
1713 EXPORT_SYMBOL(lprocfs_read_helper);
1716 * string_to_size - convert ASCII string representing a numerical
1717 * value with optional units to 64-bit binary value
1719 * @size: The numerical value extract out of @buffer
1720 * @buffer: passed in string to parse
1721 * @count: length of the @buffer
1723 * This function returns a 64-bit binary value if @buffer contains a valid
1724 * numerical string. The string is parsed to 3 significant figures after
1725 * the decimal point. Support the string containing an optional units at
1726 * the end which can be base 2 or base 10 in value. If no units are given
1727 * the string is assumed to just a numerical value.
1729 * Returns: @count if the string is successfully parsed,
1730 * -errno on invalid input strings. Error values:
1732 * - ``-EINVAL``: @buffer is not a proper numerical string
1733 * - ``-EOVERFLOW``: results does not fit into 64 bits.
1734 * - ``-E2BIG ``: @buffer is too large (not a valid number)
1736 int string_to_size(u64 *size, const char *buffer, size_t count)
1738 /* For string_get_size() it can support values above exabytes,
1739 * (ZiB, YiB) due to breaking the return value into a size and
1740 * bulk size to avoid 64 bit overflow. We don't break the size
1741 * up into block size units so we don't support ZiB or YiB.
1743 static const char *const units_10[] = {
1744 "kB", "MB", "GB", "TB", "PB", "EB",
1746 static const char *const units_2[] = {
1747 "K", "M", "G", "T", "P", "E",
1749 static const char *const *const units_str[] = {
1750 [STRING_UNITS_2] = units_2,
1751 [STRING_UNITS_10] = units_10,
1753 static const unsigned int coeff[] = {
1754 [STRING_UNITS_10] = 1000,
1755 [STRING_UNITS_2] = 1024,
1757 enum string_size_units unit = STRING_UNITS_2;
1758 u64 whole, blk_size = 1;
1759 char kernbuf[22], *end;
1764 if (count >= sizeof(kernbuf)) {
1765 CERROR("count %zd > buffer %zd\n", count, sizeof(kernbuf));
1770 /* The "iB" suffix is optionally allowed for indicating base-2 numbers.
1771 * If suffix is only "B" and not "iB" then we treat it as base-10.
1773 end = strstr(buffer, "B");
1774 if (end && *(end - 1) != 'i')
1775 unit = STRING_UNITS_10;
1777 i = unit == STRING_UNITS_2 ? ARRAY_SIZE(units_2) - 1 :
1778 ARRAY_SIZE(units_10) - 1;
1780 end = strnstr(buffer, units_str[unit][i], count);
1783 blk_size *= coeff[unit];
1789 /* as 'B' is a substring of all units, we need to handle it
1793 /* 'B' is only acceptable letter at this point */
1794 end = strnchr(buffer, count, 'B');
1798 if (count - len > 2 ||
1799 (count - len == 2 && strcmp(end, "B\n") != 0)) {
1800 CDEBUG(D_INFO, "unknown suffix '%s'\n", buffer);
1804 /* kstrtoull will error out if it has non digits */
1808 end = strnchr(buffer, count, '.');
1810 /* need to limit 3 decimal places */
1811 char rem[4] = "000";
1818 /* limit to 3 decimal points */
1819 off = min_t(size_t, 3, strspn(end, "0123456789"));
1820 /* need to limit frac_d to a u32 */
1821 memcpy(rem, end, off);
1822 rc = kstrtoull(rem, 10, &frac);
1826 if (fls64(frac) + fls64(blk_size) - 1 > 64)
1834 snprintf(kernbuf, sizeof(kernbuf), "%.*s", (int)len, buffer);
1835 rc = kstrtoull(kernbuf, 10, &whole);
1839 if (whole != 0 && fls64(whole) + fls64(blk_size) - 1 > 64)
1842 *size += whole * blk_size;
1846 EXPORT_SYMBOL(string_to_size);
1849 * sysfs_memparse - parse a ASCII string to 64-bit binary value,
1850 * with optional units
1852 * @buffer: kernel pointer to input string
1853 * @count: number of bytes in the input @buffer
1854 * @val: (output) binary value returned to caller
1855 * @defunit: default unit suffix to use if none is provided
1857 * Parses a string into a number. The number stored at @buffer is
1858 * potentially suffixed with K, M, G, T, P, E. Besides these other
1859 * valid suffix units are shown in the string_to_size() function.
1860 * If the string lacks a suffix then the defunit is used. The defunit
1861 * should be given as a binary unit (e.g. MiB) as that is the standard
1862 * for tunables in Lustre. If no unit suffix is given (e.g. 'G'), then
1863 * it is assumed to be in binary units.
1865 * Returns: 0 on success or -errno on failure.
1867 int sysfs_memparse(const char *buffer, size_t count, u64 *val,
1868 const char *defunit)
1870 const char *param = buffer;
1874 count = strlen(buffer);
1875 while (count > 0 && isspace(buffer[count - 1]))
1881 /* If there isn't already a unit on this value, append @defunit.
1882 * Units of 'B' don't affect the value, so don't bother adding.
1884 if (!isalpha(buffer[count - 1]) && defunit[0] != 'B') {
1885 if (count + 3 >= sizeof(tmp_buf)) {
1886 CERROR("count %zd > size %zd\n", count, sizeof(param));
1890 scnprintf(tmp_buf, sizeof(tmp_buf), "%.*s%s", (int)count,
1893 count = strlen(param);
1896 rc = string_to_size(val, param, count);
1898 return rc < 0 ? rc : 0;
1900 EXPORT_SYMBOL(sysfs_memparse);
1902 char *lprocfs_strnstr(const char *s1, const char *s2, size_t len)
1911 if (!memcmp(s1, s2, l2))
1917 EXPORT_SYMBOL(lprocfs_strnstr);
1920 * Find the string \a name in the input \a buffer, and return a pointer to the
1921 * value immediately following \a name, reducing \a count appropriately.
1922 * If \a name is not found the original \a buffer is returned.
1924 char *lprocfs_find_named_value(const char *buffer, const char *name,
1928 size_t buflen = *count;
1930 /* there is no strnstr() in rhel5 and ubuntu kernels */
1931 val = lprocfs_strnstr(buffer, name, buflen);
1933 return (char *)buffer;
1935 val += strlen(name); /* skip prefix */
1936 while (val < buffer + buflen && isspace(*val)) /* skip separator */
1940 while (val < buffer + buflen && isalnum(*val)) {
1945 return val - *count;
1947 EXPORT_SYMBOL(lprocfs_find_named_value);
1949 int lprocfs_seq_create(struct proc_dir_entry *parent,
1952 const struct proc_ops *seq_fops,
1955 struct proc_dir_entry *entry;
1958 /* Disallow secretly (un)writable entries. */
1959 LASSERT(!seq_fops->proc_write == !(mode & 0222));
1961 entry = proc_create_data(name, mode, parent, seq_fops, data);
1968 EXPORT_SYMBOL(lprocfs_seq_create);
1970 int lprocfs_obd_seq_create(struct obd_device *obd,
1973 const struct proc_ops *seq_fops,
1976 return lprocfs_seq_create(obd->obd_proc_entry, name,
1977 mode, seq_fops, data);
1979 EXPORT_SYMBOL(lprocfs_obd_seq_create);
1981 void lprocfs_oh_tally(struct obd_histogram *oh, unsigned int value)
1983 if (value >= OBD_HIST_MAX)
1984 value = OBD_HIST_MAX - 1;
1986 spin_lock(&oh->oh_lock);
1987 oh->oh_buckets[value]++;
1988 spin_unlock(&oh->oh_lock);
1990 EXPORT_SYMBOL(lprocfs_oh_tally);
1992 void lprocfs_oh_tally_log2(struct obd_histogram *oh, unsigned int value)
1994 unsigned int val = 0;
1996 if (likely(value != 0))
1997 val = min(fls(value - 1), OBD_HIST_MAX);
1999 lprocfs_oh_tally(oh, val);
2001 EXPORT_SYMBOL(lprocfs_oh_tally_log2);
2003 unsigned long lprocfs_oh_sum(struct obd_histogram *oh)
2005 unsigned long ret = 0;
2008 for (i = 0; i < OBD_HIST_MAX; i++)
2009 ret += oh->oh_buckets[i];
2012 EXPORT_SYMBOL(lprocfs_oh_sum);
2014 void lprocfs_oh_clear(struct obd_histogram *oh)
2016 spin_lock(&oh->oh_lock);
2017 memset(oh->oh_buckets, 0, sizeof(oh->oh_buckets));
2018 spin_unlock(&oh->oh_lock);
2020 EXPORT_SYMBOL(lprocfs_oh_clear);
2022 void lprocfs_oh_tally_pcpu(struct obd_hist_pcpu *oh,
2025 if (value >= OBD_HIST_MAX)
2026 value = OBD_HIST_MAX - 1;
2028 percpu_counter_inc(&oh->oh_pc_buckets[value]);
2030 EXPORT_SYMBOL(lprocfs_oh_tally_pcpu);
2032 void lprocfs_oh_tally_log2_pcpu(struct obd_hist_pcpu *oh,
2035 unsigned int val = 0;
2037 if (likely(value != 0))
2038 val = min(fls(value - 1), OBD_HIST_MAX);
2040 lprocfs_oh_tally_pcpu(oh, val);
2042 EXPORT_SYMBOL(lprocfs_oh_tally_log2_pcpu);
2044 unsigned long lprocfs_oh_counter_pcpu(struct obd_hist_pcpu *oh,
2047 return percpu_counter_sum(&oh->oh_pc_buckets[value]);
2049 EXPORT_SYMBOL(lprocfs_oh_counter_pcpu);
2051 unsigned long lprocfs_oh_sum_pcpu(struct obd_hist_pcpu *oh)
2053 unsigned long ret = 0;
2056 for (i = 0; i < OBD_HIST_MAX; i++)
2057 ret += percpu_counter_sum(&oh->oh_pc_buckets[i]);
2061 EXPORT_SYMBOL(lprocfs_oh_sum_pcpu);
2063 int lprocfs_oh_alloc_pcpu(struct obd_hist_pcpu *oh)
2067 if (oh->oh_initialized)
2070 for (i = 0; i < OBD_HIST_MAX; i++) {
2071 rc = percpu_counter_init(&oh->oh_pc_buckets[i], 0, GFP_KERNEL);
2076 oh->oh_initialized = true;
2081 for (i--; i >= 0; i--)
2082 percpu_counter_destroy(&oh->oh_pc_buckets[i]);
2086 EXPORT_SYMBOL(lprocfs_oh_alloc_pcpu);
2088 void lprocfs_oh_clear_pcpu(struct obd_hist_pcpu *oh)
2092 for (i = 0; i < OBD_HIST_MAX; i++)
2093 percpu_counter_set(&oh->oh_pc_buckets[i], 0);
2095 EXPORT_SYMBOL(lprocfs_oh_clear_pcpu);
2097 void lprocfs_oh_release_pcpu(struct obd_hist_pcpu *oh)
2101 if (!oh->oh_initialized)
2104 for (i = 0; i < OBD_HIST_MAX; i++)
2105 percpu_counter_destroy(&oh->oh_pc_buckets[i]);
2107 oh->oh_initialized = false;
2109 EXPORT_SYMBOL(lprocfs_oh_release_pcpu);
2111 ssize_t lustre_attr_show(struct kobject *kobj,
2112 struct attribute *attr, char *buf)
2114 struct lustre_attr *a = container_of(attr, struct lustre_attr, attr);
2116 return a->show ? a->show(kobj, attr, buf) : 0;
2118 EXPORT_SYMBOL_GPL(lustre_attr_show);
2120 ssize_t lustre_attr_store(struct kobject *kobj, struct attribute *attr,
2121 const char *buf, size_t len)
2123 struct lustre_attr *a = container_of(attr, struct lustre_attr, attr);
2125 return a->store ? a->store(kobj, attr, buf, len) : len;
2127 EXPORT_SYMBOL_GPL(lustre_attr_store);
2129 const struct sysfs_ops lustre_sysfs_ops = {
2130 .show = lustre_attr_show,
2131 .store = lustre_attr_store,
2133 EXPORT_SYMBOL_GPL(lustre_sysfs_ops);
2135 int lprocfs_obd_max_pages_per_rpc_seq_show(struct seq_file *m, void *data)
2137 struct obd_device *obd = data;
2138 struct client_obd *cli = &obd->u.cli;
2140 spin_lock(&cli->cl_loi_list_lock);
2141 seq_printf(m, "%d\n", cli->cl_max_pages_per_rpc);
2142 spin_unlock(&cli->cl_loi_list_lock);
2145 EXPORT_SYMBOL(lprocfs_obd_max_pages_per_rpc_seq_show);
2147 ssize_t lprocfs_obd_max_pages_per_rpc_seq_write(struct file *file,
2148 const char __user *buffer,
2149 size_t count, loff_t *off)
2151 struct seq_file *m = file->private_data;
2152 struct obd_device *obd = m->private;
2153 struct client_obd *cli = &obd->u.cli;
2154 struct obd_import *imp;
2155 struct obd_connect_data *ocd;
2160 if (count > sizeof(kernbuf) - 1)
2163 if (copy_from_user(kernbuf, buffer, count))
2166 kernbuf[count] = '\0';
2168 rc = sysfs_memparse(kernbuf, count, &val, "B");
2172 /* if the max_pages is specified in bytes, convert to pages */
2173 if (val >= ONE_MB_BRW_SIZE)
2176 with_imp_locked(obd, imp, rc) {
2177 ocd = &imp->imp_connect_data;
2178 chunk_mask = ~((1 << (cli->cl_chunkbits - PAGE_SHIFT)) - 1);
2179 /* max_pages_per_rpc must be chunk aligned */
2180 val = (val + ~chunk_mask) & chunk_mask;
2181 if (val == 0 || (ocd->ocd_brw_size != 0 &&
2182 val > ocd->ocd_brw_size >> PAGE_SHIFT)) {
2185 spin_lock(&cli->cl_loi_list_lock);
2186 cli->cl_max_pages_per_rpc = val;
2187 client_adjust_max_dirty(cli);
2188 spin_unlock(&cli->cl_loi_list_lock);
2194 EXPORT_SYMBOL(lprocfs_obd_max_pages_per_rpc_seq_write);
2196 ssize_t short_io_bytes_show(struct kobject *kobj, struct attribute *attr,
2199 struct obd_device *obd = container_of(kobj, struct obd_device,
2201 struct client_obd *cli = &obd->u.cli;
2204 spin_lock(&cli->cl_loi_list_lock);
2205 rc = sprintf(buf, "%d\n", cli->cl_max_short_io_bytes);
2206 spin_unlock(&cli->cl_loi_list_lock);
2209 EXPORT_SYMBOL(short_io_bytes_show);
2211 /* Used to catch people who think they're specifying pages. */
2212 #define MIN_SHORT_IO_BYTES 64U
2214 ssize_t short_io_bytes_store(struct kobject *kobj, struct attribute *attr,
2215 const char *buffer, size_t count)
2217 struct obd_device *obd = container_of(kobj, struct obd_device,
2219 struct client_obd *cli = &obd->u.cli;
2223 if (strcmp(buffer, "-1") == 0) {
2224 val = OBD_DEF_SHORT_IO_BYTES;
2226 rc = sysfs_memparse(buffer, count, &val, "B");
2231 if (val && (val < MIN_SHORT_IO_BYTES || val > LNET_MTU))
2232 GOTO(out, rc = -ERANGE);
2236 spin_lock(&cli->cl_loi_list_lock);
2237 cli->cl_max_short_io_bytes = min_t(u64, val, OST_MAX_SHORT_IO_BYTES);
2238 spin_unlock(&cli->cl_loi_list_lock);
2243 EXPORT_SYMBOL(short_io_bytes_store);
2245 int lprocfs_wr_root_squash(const char __user *buffer, unsigned long count,
2246 struct root_squash_info *squash, char *name)
2249 char kernbuf[64], *tmp, *errmsg;
2250 unsigned long uid, gid;
2253 if (count >= sizeof(kernbuf)) {
2254 errmsg = "string too long";
2255 GOTO(failed_noprint, rc = -EINVAL);
2257 if (copy_from_user(kernbuf, buffer, count)) {
2258 errmsg = "bad address";
2259 GOTO(failed_noprint, rc = -EFAULT);
2261 kernbuf[count] = '\0';
2263 /* look for uid gid separator */
2264 tmp = strchr(kernbuf, ':');
2266 errmsg = "needs uid:gid format";
2267 GOTO(failed, rc = -EINVAL);
2273 if (kstrtoul(kernbuf, 0, &uid) != 0) {
2275 GOTO(failed, rc = -EINVAL);
2279 if (kstrtoul(tmp, 0, &gid) != 0) {
2281 GOTO(failed, rc = -EINVAL);
2284 squash->rsi_uid = uid;
2285 squash->rsi_gid = gid;
2287 LCONSOLE_INFO("%s: root_squash is set to %u:%u\n",
2288 name, squash->rsi_uid, squash->rsi_gid);
2296 CWARN("%s: failed to set root_squash to \"%s\", %s, rc = %d\n",
2297 name, kernbuf, errmsg, rc);
2300 CWARN("%s: failed to set root_squash due to %s, rc = %d\n",
2304 EXPORT_SYMBOL(lprocfs_wr_root_squash);
2307 int lprocfs_wr_nosquash_nids(const char __user *buffer, unsigned long count,
2308 struct root_squash_info *squash, char *name)
2311 char *kernbuf = NULL;
2318 errmsg = "string too long";
2319 GOTO(failed, rc = -EINVAL);
2322 OBD_ALLOC(kernbuf, count + 1);
2324 errmsg = "no memory";
2325 GOTO(failed, rc = -ENOMEM);
2327 if (copy_from_user(kernbuf, buffer, count)) {
2328 errmsg = "bad address";
2329 GOTO(failed, rc = -EFAULT);
2331 kernbuf[count] = '\0';
2333 if (count > 0 && kernbuf[count - 1] == '\n')
2336 if ((len == 4 && strncmp(kernbuf, "NONE", len) == 0) ||
2337 (len == 5 && strncmp(kernbuf, "clear", len) == 0)) {
2338 /* empty string is special case */
2339 spin_lock(&squash->rsi_lock);
2340 if (!list_empty(&squash->rsi_nosquash_nids))
2341 cfs_free_nidlist(&squash->rsi_nosquash_nids);
2342 spin_unlock(&squash->rsi_lock);
2343 LCONSOLE_INFO("%s: nosquash_nids is cleared\n", name);
2344 OBD_FREE(kernbuf, count + 1);
2348 if (cfs_parse_nidlist(kernbuf, count, &tmp) <= 0) {
2349 errmsg = "can't parse";
2350 GOTO(failed, rc = -EINVAL);
2352 LCONSOLE_INFO("%s: nosquash_nids set to %s\n",
2354 OBD_FREE(kernbuf, count + 1);
2357 spin_lock(&squash->rsi_lock);
2358 if (!list_empty(&squash->rsi_nosquash_nids))
2359 cfs_free_nidlist(&squash->rsi_nosquash_nids);
2360 list_splice(&tmp, &squash->rsi_nosquash_nids);
2361 spin_unlock(&squash->rsi_lock);
2367 CWARN("%s: failed to set nosquash_nids to \"%s\", %s rc = %d\n",
2368 name, kernbuf, errmsg, rc);
2369 OBD_FREE(kernbuf, count + 1);
2371 CWARN("%s: failed to set nosquash_nids due to %s rc = %d\n",
2376 EXPORT_SYMBOL(lprocfs_wr_nosquash_nids);
2378 #endif /* CONFIG_PROC_FS*/