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/
30 * Lustre is a trademark of Sun Microsystems, Inc.
32 * lustre/obdclass/lprocfs_status.c
34 * Author: Hariharan Thantry <thantry@users.sourceforge.net>
37 #define DEBUG_SUBSYSTEM S_CLASS
39 #include <obd_class.h>
40 #include <lprocfs_status.h>
44 static int lprocfs_no_percpu_stats = 0;
45 module_param(lprocfs_no_percpu_stats, int, 0644);
46 MODULE_PARM_DESC(lprocfs_no_percpu_stats, "Do not alloc percpu data for lprocfs stats");
48 #define MAX_STRING_SIZE 128
50 int lprocfs_single_release(struct inode *inode, struct file *file)
52 return single_release(inode, file);
54 EXPORT_SYMBOL(lprocfs_single_release);
56 int lprocfs_seq_release(struct inode *inode, struct file *file)
58 return seq_release(inode, file);
60 EXPORT_SYMBOL(lprocfs_seq_release);
62 struct dentry *ldebugfs_add_simple(struct dentry *root,
63 char *name, void *data,
64 const struct file_operations *fops)
69 if (!root || !name || !fops)
70 return ERR_PTR(-EINVAL);
76 entry = debugfs_create_file(name, mode, root, data, fops);
77 if (IS_ERR_OR_NULL(entry)) {
78 CERROR("LprocFS: No memory to create <debugfs> entry %s", name);
79 return entry ?: ERR_PTR(-ENOMEM);
83 EXPORT_SYMBOL(ldebugfs_add_simple);
85 struct proc_dir_entry *
86 lprocfs_add_simple(struct proc_dir_entry *root, char *name,
87 void *data, const struct file_operations *fops)
89 struct proc_dir_entry *proc;
92 if (!root || !name || !fops)
93 return ERR_PTR(-EINVAL);
99 proc = proc_create_data(name, mode, root, fops, data);
101 CERROR("LprocFS: No memory to create /proc entry %s\n",
103 return ERR_PTR(-ENOMEM);
107 EXPORT_SYMBOL(lprocfs_add_simple);
109 struct proc_dir_entry *lprocfs_add_symlink(const char *name,
110 struct proc_dir_entry *parent,
111 const char *format, ...)
113 struct proc_dir_entry *entry;
117 if (!parent || !format)
120 OBD_ALLOC_WAIT(dest, MAX_STRING_SIZE + 1);
124 va_start(ap, format);
125 vsnprintf(dest, MAX_STRING_SIZE, format, ap);
128 entry = proc_symlink(name, parent, dest);
130 CERROR("LprocFS: Could not create symbolic link from "
131 "%s to %s\n", name, dest);
133 OBD_FREE(dest, MAX_STRING_SIZE + 1);
136 EXPORT_SYMBOL(lprocfs_add_symlink);
138 static const struct file_operations lprocfs_generic_fops = { };
140 int ldebugfs_add_vars(struct dentry *parent, struct lprocfs_vars *list,
143 if (IS_ERR_OR_NULL(parent) || IS_ERR_OR_NULL(list))
147 struct dentry *entry;
150 if (list->proc_mode != 0000) {
151 mode = list->proc_mode;
152 } else if (list->fops) {
153 if (list->fops->read)
155 if (list->fops->write)
158 entry = debugfs_create_file(list->name, mode, parent,
160 list->fops ? : &lprocfs_generic_fops);
161 if (IS_ERR_OR_NULL(entry))
162 return entry ? PTR_ERR(entry) : -ENOMEM;
167 EXPORT_SYMBOL_GPL(ldebugfs_add_vars);
172 * \param root [in] The parent proc entry on which new entry will be added.
173 * \param list [in] Array of proc entries to be added.
174 * \param data [in] The argument to be passed when entries read/write routines
175 * are called through /proc file.
177 * \retval 0 on success
181 lprocfs_add_vars(struct proc_dir_entry *root, struct lprocfs_vars *list,
188 struct proc_dir_entry *proc;
191 if (list->proc_mode != 0000) {
192 mode = list->proc_mode;
193 } else if (list->fops) {
194 if (list->fops->read)
196 if (list->fops->write)
199 proc = proc_create_data(list->name, mode, root,
200 list->fops ?: &lprocfs_generic_fops,
208 EXPORT_SYMBOL(lprocfs_add_vars);
210 #ifndef HAVE_REMOVE_PROC_SUBTREE
211 /* for b=10866, global variable */
212 DECLARE_RWSEM(_lprocfs_lock);
213 EXPORT_SYMBOL(_lprocfs_lock);
215 static void lprocfs_remove_nolock(struct proc_dir_entry **proot)
217 struct proc_dir_entry *root = *proot;
218 struct proc_dir_entry *temp = root;
219 struct proc_dir_entry *rm_entry;
220 struct proc_dir_entry *parent;
223 if (!root || IS_ERR(root))
226 parent = root->parent;
227 LASSERT(parent != NULL);
237 * Memory corruption once caused this to fail, and
238 * without this LASSERT we would loop here forever.
240 LASSERTF(strlen(rm_entry->name) == rm_entry->namelen,
241 "0x%p %s/%s len %d\n", rm_entry, temp->name,
242 rm_entry->name, (int)strlen(rm_entry->name));
244 remove_proc_entry(rm_entry->name, temp);
250 int remove_proc_subtree(const char *name, struct proc_dir_entry *parent)
252 struct proc_dir_entry *t = NULL;
253 struct proc_dir_entry **p;
256 LASSERT(parent != NULL);
259 down_write(&_lprocfs_lock);
260 /* lookup target name */
261 for (p = &parent->subdir; *p; p = &(*p)->next) {
262 if ((*p)->namelen != len)
264 if (memcmp(name, (*p)->name, len))
271 /* verify it's empty: do not count "num_refs" */
272 for (p = &t->subdir; *p; p = &(*p)->next) {
273 if ((*p)->namelen != strlen("num_refs")) {
277 if (memcmp("num_refs", (*p)->name,
278 strlen("num_refs"))) {
286 lprocfs_remove_nolock(&t);
288 up_write(&_lprocfs_lock);
291 #endif /* !HAVE_REMOVE_PROC_SUBTREE */
293 #ifndef HAVE_PROC_REMOVE
294 void proc_remove(struct proc_dir_entry *de)
296 #ifndef HAVE_REMOVE_PROC_SUBTREE
297 down_write(&_lprocfs_lock); /* search vs remove race */
298 lprocfs_remove_nolock(&de);
299 up_write(&_lprocfs_lock);
302 remove_proc_subtree(de->name, de->parent);
307 void lprocfs_remove(struct proc_dir_entry **rooth)
312 EXPORT_SYMBOL(lprocfs_remove);
314 void lprocfs_remove_proc_entry(const char *name, struct proc_dir_entry *parent)
316 LASSERT(parent != NULL);
317 remove_proc_entry(name, parent);
319 EXPORT_SYMBOL(lprocfs_remove_proc_entry);
321 struct dentry *ldebugfs_register(const char *name, struct dentry *parent,
322 struct lprocfs_vars *list, void *data)
324 struct dentry *entry;
326 entry = debugfs_create_dir(name, parent);
327 if (IS_ERR_OR_NULL(entry)) {
328 entry = entry ?: ERR_PTR(-ENOMEM);
332 if (!IS_ERR_OR_NULL(list)) {
335 rc = ldebugfs_add_vars(entry, list, data);
337 debugfs_remove(entry);
344 EXPORT_SYMBOL_GPL(ldebugfs_register);
346 struct proc_dir_entry *
347 lprocfs_register(const char *name, struct proc_dir_entry *parent,
348 struct lprocfs_vars *list, void *data)
350 struct proc_dir_entry *newchild;
352 newchild = proc_mkdir(name, parent);
354 return ERR_PTR(-ENOMEM);
357 int rc = lprocfs_add_vars(newchild, list, data);
359 lprocfs_remove(&newchild);
365 EXPORT_SYMBOL(lprocfs_register);
367 /* Generic callbacks */
368 int lprocfs_uuid_seq_show(struct seq_file *m, void *data)
370 struct obd_device *obd = data;
372 LASSERT(obd != NULL);
373 seq_printf(m, "%s\n", obd->obd_uuid.uuid);
376 EXPORT_SYMBOL(lprocfs_uuid_seq_show);
378 static ssize_t uuid_show(struct kobject *kobj, struct attribute *attr,
381 struct obd_device *obd = container_of(kobj, struct obd_device,
384 return sprintf(buf, "%s\n", obd->obd_uuid.uuid);
386 LUSTRE_RO_ATTR(uuid);
388 static ssize_t blocksize_show(struct kobject *kobj, struct attribute *attr,
391 struct obd_device *obd = container_of(kobj, struct obd_device,
393 struct obd_statfs osfs;
396 rc = obd_statfs(NULL, obd->obd_self_export, &osfs,
397 ktime_get_seconds() - OBD_STATFS_CACHE_SECONDS,
400 return sprintf(buf, "%u\n", osfs.os_bsize);
404 LUSTRE_RO_ATTR(blocksize);
406 static ssize_t kbytestotal_show(struct kobject *kobj, struct attribute *attr,
409 struct obd_device *obd = container_of(kobj, struct obd_device,
411 struct obd_statfs osfs;
414 rc = obd_statfs(NULL, obd->obd_self_export, &osfs,
415 ktime_get_seconds() - OBD_STATFS_CACHE_SECONDS,
418 u32 blk_size = osfs.os_bsize >> 10;
419 u64 result = osfs.os_blocks;
421 result *= rounddown_pow_of_two(blk_size ?: 1);
422 return sprintf(buf, "%llu\n", result);
427 LUSTRE_RO_ATTR(kbytestotal);
429 static ssize_t kbytesfree_show(struct kobject *kobj, struct attribute *attr,
432 struct obd_device *obd = container_of(kobj, struct obd_device,
434 struct obd_statfs osfs;
437 rc = obd_statfs(NULL, obd->obd_self_export, &osfs,
438 ktime_get_seconds() - OBD_STATFS_CACHE_SECONDS,
441 u32 blk_size = osfs.os_bsize >> 10;
442 u64 result = osfs.os_bfree;
444 while (blk_size >>= 1)
447 return sprintf(buf, "%llu\n", result);
452 LUSTRE_RO_ATTR(kbytesfree);
454 static ssize_t kbytesavail_show(struct kobject *kobj, struct attribute *attr,
457 struct obd_device *obd = container_of(kobj, struct obd_device,
459 struct obd_statfs osfs;
462 rc = obd_statfs(NULL, obd->obd_self_export, &osfs,
463 ktime_get_seconds() - OBD_STATFS_CACHE_SECONDS,
466 u32 blk_size = osfs.os_bsize >> 10;
467 u64 result = osfs.os_bavail;
469 while (blk_size >>= 1)
472 return sprintf(buf, "%llu\n", result);
477 LUSTRE_RO_ATTR(kbytesavail);
479 static ssize_t filestotal_show(struct kobject *kobj, struct attribute *attr,
482 struct obd_device *obd = container_of(kobj, struct obd_device,
484 struct obd_statfs osfs;
487 rc = obd_statfs(NULL, obd->obd_self_export, &osfs,
488 ktime_get_seconds() - OBD_STATFS_CACHE_SECONDS,
491 return sprintf(buf, "%llu\n", osfs.os_files);
495 LUSTRE_RO_ATTR(filestotal);
497 static ssize_t filesfree_show(struct kobject *kobj, struct attribute *attr,
500 struct obd_device *obd = container_of(kobj, struct obd_device,
502 struct obd_statfs osfs;
505 rc = obd_statfs(NULL, obd->obd_self_export, &osfs,
506 ktime_get_seconds() - OBD_STATFS_CACHE_SECONDS,
509 return sprintf(buf, "%llu\n", osfs.os_ffree);
513 LUSTRE_RO_ATTR(filesfree);
515 ssize_t conn_uuid_show(struct kobject *kobj, struct attribute *attr, char *buf)
517 struct obd_device *obd = container_of(kobj, struct obd_device,
519 struct obd_import *imp;
520 struct ptlrpc_connection *conn;
523 with_imp_locked(obd, imp, count) {
524 conn = imp->imp_connection;
526 count = sprintf(buf, "%s\n", conn->c_remote_uuid.uuid);
528 count = sprintf(buf, "%s\n", "<none>");
533 EXPORT_SYMBOL(conn_uuid_show);
535 int lprocfs_server_uuid_seq_show(struct seq_file *m, void *data)
537 struct obd_device *obd = data;
538 struct obd_import *imp;
539 char *imp_state_name = NULL;
542 LASSERT(obd != NULL);
543 with_imp_locked(obd, imp, rc) {
544 imp_state_name = ptlrpc_import_state_name(imp->imp_state);
545 seq_printf(m, "%s\t%s%s\n", obd2cli_tgt(obd), imp_state_name,
546 imp->imp_deactive ? "\tDEACTIVATED" : "");
551 EXPORT_SYMBOL(lprocfs_server_uuid_seq_show);
553 /** add up per-cpu counters */
556 * Lock statistics structure for access, possibly only on this CPU.
558 * The statistics struct may be allocated with per-CPU structures for
559 * efficient concurrent update (usually only on server-wide stats), or
560 * as a single global struct (e.g. for per-client or per-job statistics),
561 * so the required locking depends on the type of structure allocated.
563 * For per-CPU statistics, pin the thread to the current cpuid so that
564 * will only access the statistics for that CPU. If the stats structure
565 * for the current CPU has not been allocated (or previously freed),
566 * allocate it now. The per-CPU statistics do not need locking since
567 * the thread is pinned to the CPU during update.
569 * For global statistics, lock the stats structure to prevent concurrent update.
571 * \param[in] stats statistics structure to lock
572 * \param[in] opc type of operation:
573 * LPROCFS_GET_SMP_ID: "lock" and return current CPU index
574 * for incrementing statistics for that CPU
575 * LPROCFS_GET_NUM_CPU: "lock" and return number of used
576 * CPU indices to iterate over all indices
577 * \param[out] flags CPU interrupt saved state for IRQ-safe locking
579 * \retval cpuid of current thread or number of allocated structs
580 * \retval negative on error (only for opc LPROCFS_GET_SMP_ID + per-CPU stats)
582 int lprocfs_stats_lock(struct lprocfs_stats *stats,
583 enum lprocfs_stats_lock_ops opc,
584 unsigned long *flags)
586 if (stats->ls_flags & LPROCFS_STATS_FLAG_NOPERCPU) {
587 if (stats->ls_flags & LPROCFS_STATS_FLAG_IRQ_SAFE)
588 spin_lock_irqsave(&stats->ls_lock, *flags);
590 spin_lock(&stats->ls_lock);
591 return opc == LPROCFS_GET_NUM_CPU ? 1 : 0;
595 case LPROCFS_GET_SMP_ID: {
596 unsigned int cpuid = get_cpu();
598 if (unlikely(!stats->ls_percpu[cpuid])) {
599 int rc = lprocfs_stats_alloc_one(stats, cpuid);
608 case LPROCFS_GET_NUM_CPU:
609 return stats->ls_biggest_alloc_num;
616 * Unlock statistics structure after access.
618 * Unlock the lock acquired via lprocfs_stats_lock() for global statistics,
619 * or unpin this thread from the current cpuid for per-CPU statistics.
621 * This function must be called using the same arguments as used when calling
622 * lprocfs_stats_lock() so that the correct operation can be performed.
624 * \param[in] stats statistics structure to unlock
625 * \param[in] opc type of operation (current cpuid or number of structs)
626 * \param[in] flags CPU interrupt saved state for IRQ-safe locking
628 void lprocfs_stats_unlock(struct lprocfs_stats *stats,
629 enum lprocfs_stats_lock_ops opc,
630 unsigned long *flags)
632 if (stats->ls_flags & LPROCFS_STATS_FLAG_NOPERCPU) {
633 if (stats->ls_flags & LPROCFS_STATS_FLAG_IRQ_SAFE)
634 spin_unlock_irqrestore(&stats->ls_lock, *flags);
636 spin_unlock(&stats->ls_lock);
637 } else if (opc == LPROCFS_GET_SMP_ID) {
642 /** add up per-cpu counters */
643 void lprocfs_stats_collect(struct lprocfs_stats *stats, int idx,
644 struct lprocfs_counter *cnt)
646 unsigned int num_entry;
647 struct lprocfs_counter *percpu_cntr;
649 unsigned long flags = 0;
651 memset(cnt, 0, sizeof(*cnt));
654 /* set count to 1 to avoid divide-by-zero errs in callers */
659 cnt->lc_min = LC_MIN_INIT;
661 num_entry = lprocfs_stats_lock(stats, LPROCFS_GET_NUM_CPU, &flags);
663 for (i = 0; i < num_entry; i++) {
664 if (!stats->ls_percpu[i])
666 percpu_cntr = lprocfs_stats_counter_get(stats, i, idx);
668 cnt->lc_count += percpu_cntr->lc_count;
669 cnt->lc_sum += percpu_cntr->lc_sum;
670 if (percpu_cntr->lc_min < cnt->lc_min)
671 cnt->lc_min = percpu_cntr->lc_min;
672 if (percpu_cntr->lc_max > cnt->lc_max)
673 cnt->lc_max = percpu_cntr->lc_max;
674 cnt->lc_sumsquare += percpu_cntr->lc_sumsquare;
677 lprocfs_stats_unlock(stats, LPROCFS_GET_NUM_CPU, &flags);
680 static void obd_import_flags2str(struct obd_import *imp, struct seq_file *m)
684 if (imp->imp_obd->obd_no_recov) {
685 seq_printf(m, "no_recov");
689 flag2str(imp, invalid);
690 flag2str(imp, deactive);
691 flag2str(imp, replayable);
692 flag2str(imp, delayed_recovery);
693 flag2str(imp, vbr_failed);
694 flag2str(imp, pingable);
695 flag2str(imp, resend_replay);
696 flag2str(imp, no_pinger_recover);
697 flag2str(imp, connect_tried);
700 static const char *obd_connect_names[] = {
719 "remote_client_by_force",
728 "mds_mds_connection",
731 "alt_checksum_algorithm",
767 "file_secctx", /* 0x01 */
768 "lockaheadv2", /* 0x02 */
769 "dir_migrate", /* 0x04 */
770 "sum_statfs", /* 0x08 */
771 "overstriping", /* 0x10 */
774 "lock_convert", /* 0x80 */
775 "archive_id_array", /* 0x100 */
776 "increasing_xid", /* 0x200 */
777 "selinux_policy", /* 0x400 */
780 "crush", /* 0x2000 */
781 "async_discard", /* 0x4000 */
782 "client_encryption", /* 0x8000 */
786 void obd_connect_seq_flags2str(struct seq_file *m, __u64 flags, __u64 flags2,
793 for (i = 0, mask = 1; i < 64; i++, mask <<= 1) {
795 seq_printf(m, "%s%s",
796 first ? "" : sep, obd_connect_names[i]);
801 if (flags & ~(mask - 1)) {
802 seq_printf(m, "%sunknown_%#llx",
803 first ? "" : sep, flags & ~(mask - 1));
807 if (!(flags & OBD_CONNECT_FLAGS2) || flags2 == 0)
810 for (i = 64, mask = 1; obd_connect_names[i] != NULL; i++, mask <<= 1) {
812 seq_printf(m, "%s%s",
813 first ? "" : sep, obd_connect_names[i]);
818 if (flags2 & ~(mask - 1)) {
819 seq_printf(m, "%sunknown2_%#llx",
820 first ? "" : sep, flags2 & ~(mask - 1));
824 EXPORT_SYMBOL(obd_connect_seq_flags2str);
826 int obd_connect_flags2str(char *page, int count, __u64 flags, __u64 flags2,
832 for (i = 0, mask = 1; i < 64; i++, mask <<= 1) {
834 ret += snprintf(page + ret, count - ret, "%s%s",
835 ret ? sep : "", obd_connect_names[i]);
838 if (flags & ~(mask - 1))
839 ret += snprintf(page + ret, count - ret,
841 ret ? sep : "", flags & ~(mask - 1));
843 if (!(flags & OBD_CONNECT_FLAGS2) || flags2 == 0)
846 for (i = 64, mask = 1; obd_connect_names[i] != NULL; i++, mask <<= 1) {
848 ret += snprintf(page + ret, count - ret, "%s%s",
849 ret ? sep : "", obd_connect_names[i]);
852 if (flags2 & ~(mask - 1))
853 ret += snprintf(page + ret, count - ret,
855 ret ? sep : "", flags2 & ~(mask - 1));
859 EXPORT_SYMBOL(obd_connect_flags2str);
862 obd_connect_data_seqprint(struct seq_file *m, struct obd_connect_data *ocd)
866 LASSERT(ocd != NULL);
867 flags = ocd->ocd_connect_flags;
869 seq_printf(m, " connect_data:\n"
872 ocd->ocd_connect_flags,
874 if (flags & OBD_CONNECT_VERSION)
875 seq_printf(m, " target_version: %u.%u.%u.%u\n",
876 OBD_OCD_VERSION_MAJOR(ocd->ocd_version),
877 OBD_OCD_VERSION_MINOR(ocd->ocd_version),
878 OBD_OCD_VERSION_PATCH(ocd->ocd_version),
879 OBD_OCD_VERSION_FIX(ocd->ocd_version));
880 if (flags & OBD_CONNECT_MDS)
881 seq_printf(m, " mdt_index: %d\n", ocd->ocd_group);
882 if (flags & OBD_CONNECT_GRANT)
883 seq_printf(m, " initial_grant: %d\n", ocd->ocd_grant);
884 if (flags & OBD_CONNECT_INDEX)
885 seq_printf(m, " target_index: %u\n", ocd->ocd_index);
886 if (flags & OBD_CONNECT_BRW_SIZE)
887 seq_printf(m, " max_brw_size: %d\n", ocd->ocd_brw_size);
888 if (flags & OBD_CONNECT_IBITS)
889 seq_printf(m, " ibits_known: %#llx\n",
890 ocd->ocd_ibits_known);
891 if (flags & OBD_CONNECT_GRANT_PARAM)
892 seq_printf(m, " grant_block_size: %d\n"
893 " grant_inode_size: %d\n"
894 " grant_max_extent_size: %d\n"
895 " grant_extent_tax: %d\n",
896 1 << ocd->ocd_grant_blkbits,
897 1 << ocd->ocd_grant_inobits,
898 ocd->ocd_grant_max_blks << ocd->ocd_grant_blkbits,
899 ocd->ocd_grant_tax_kb << 10);
900 if (flags & OBD_CONNECT_TRANSNO)
901 seq_printf(m, " first_transno: %#llx\n",
903 if (flags & OBD_CONNECT_CKSUM)
904 seq_printf(m, " cksum_types: %#x\n",
905 ocd->ocd_cksum_types);
906 if (flags & OBD_CONNECT_MAX_EASIZE)
907 seq_printf(m, " max_easize: %d\n", ocd->ocd_max_easize);
908 if (flags & OBD_CONNECT_MAXBYTES)
909 seq_printf(m, " max_object_bytes: %llu\n",
911 if (flags & OBD_CONNECT_MULTIMODRPCS)
912 seq_printf(m, " max_mod_rpcs: %hu\n",
913 ocd->ocd_maxmodrpcs);
916 static void lprocfs_import_seq_show_locked(struct seq_file *m,
917 struct obd_device *obd,
918 struct obd_import *imp)
920 char nidstr[LNET_NIDSTR_SIZE];
921 struct lprocfs_counter ret;
922 struct lprocfs_counter_header *header;
923 struct obd_import_conn *conn;
924 struct obd_connect_data *ocd;
929 ocd = &imp->imp_connect_data;
931 seq_printf(m, "import:\n"
935 " connect_flags: [ ",
938 ptlrpc_import_state_name(imp->imp_state));
939 obd_connect_seq_flags2str(m, imp->imp_connect_data.ocd_connect_flags,
940 imp->imp_connect_data.ocd_connect_flags2,
942 seq_printf(m, " ]\n");
943 obd_connect_data_seqprint(m, ocd);
944 seq_printf(m, " import_flags: [ ");
945 obd_import_flags2str(imp, m);
949 " failover_nids: [ ");
950 spin_lock(&imp->imp_lock);
952 list_for_each_entry(conn, &imp->imp_conn_list, oic_item) {
953 libcfs_nid2str_r(conn->oic_conn->c_peer.nid,
954 nidstr, sizeof(nidstr));
955 seq_printf(m, "%s%s", j ? ", " : "", nidstr);
958 if (imp->imp_connection)
959 libcfs_nid2str_r(imp->imp_connection->c_peer.nid,
960 nidstr, sizeof(nidstr));
962 strncpy(nidstr, "<none>", sizeof(nidstr));
964 " current_connection: %s\n"
965 " connection_attempts: %u\n"
967 " in-progress_invalidations: %u\n"
972 atomic_read(&imp->imp_inval_count),
973 ktime_get_real_seconds() - imp->imp_last_reply_time);
974 spin_unlock(&imp->imp_lock);
976 if (!obd->obd_svc_stats)
979 header = &obd->obd_svc_stats->ls_cnt_header[PTLRPC_REQWAIT_CNTR];
980 lprocfs_stats_collect(obd->obd_svc_stats, PTLRPC_REQWAIT_CNTR, &ret);
981 if (ret.lc_count != 0)
982 ret.lc_sum = div64_s64(ret.lc_sum, ret.lc_count);
985 seq_printf(m, " rpcs:\n"
987 " unregistering: %u\n"
989 " avg_waittime: %llu %s\n",
990 atomic_read(&imp->imp_inflight),
991 atomic_read(&imp->imp_unregistering),
992 atomic_read(&imp->imp_timeouts),
993 ret.lc_sum, header->lc_units);
996 for(j = 0; j < IMP_AT_MAX_PORTALS; j++) {
997 if (imp->imp_at.iat_portal[j] == 0)
999 k = max_t(unsigned int, k,
1000 at_get(&imp->imp_at.iat_service_estimate[j]));
1002 seq_printf(m, " service_estimates:\n"
1003 " services: %u sec\n"
1004 " network: %u sec\n",
1006 at_get(&imp->imp_at.iat_net_latency));
1008 seq_printf(m, " transactions:\n"
1009 " last_replay: %llu\n"
1010 " peer_committed: %llu\n"
1011 " last_checked: %llu\n",
1012 imp->imp_last_replay_transno,
1013 imp->imp_peer_committed_transno,
1014 imp->imp_last_transno_checked);
1016 /* avg data rates */
1017 for (rw = 0; rw <= 1; rw++) {
1018 lprocfs_stats_collect(obd->obd_svc_stats,
1019 PTLRPC_LAST_CNTR + BRW_READ_BYTES + rw,
1021 if (ret.lc_sum > 0 && ret.lc_count > 0) {
1022 ret.lc_sum = div64_s64(ret.lc_sum, ret.lc_count);
1023 seq_printf(m, " %s_data_averages:\n"
1024 " bytes_per_rpc: %llu\n",
1025 rw ? "write" : "read",
1028 k = (int)ret.lc_sum;
1029 j = opcode_offset(OST_READ + rw) + EXTRA_MAX_OPCODES;
1030 header = &obd->obd_svc_stats->ls_cnt_header[j];
1031 lprocfs_stats_collect(obd->obd_svc_stats, j, &ret);
1032 if (ret.lc_sum > 0 && ret.lc_count != 0) {
1033 ret.lc_sum = div64_s64(ret.lc_sum, ret.lc_count);
1034 seq_printf(m, " %s_per_rpc: %llu\n",
1035 header->lc_units, ret.lc_sum);
1036 j = (int)ret.lc_sum;
1038 seq_printf(m, " MB_per_sec: %u.%.02u\n",
1039 k / j, (100 * k / j) % 100);
1044 int lprocfs_import_seq_show(struct seq_file *m, void *data)
1046 struct obd_device *obd = (struct obd_device *)data;
1047 struct obd_import *imp;
1050 LASSERT(obd != NULL);
1051 with_imp_locked(obd, imp, rv)
1052 lprocfs_import_seq_show_locked(m, obd, imp);
1055 EXPORT_SYMBOL(lprocfs_import_seq_show);
1057 int lprocfs_state_seq_show(struct seq_file *m, void *data)
1059 struct obd_device *obd = (struct obd_device *)data;
1060 struct obd_import *imp;
1064 LASSERT(obd != NULL);
1065 with_imp_locked(obd, imp, rc) {
1066 seq_printf(m, "current_state: %s\n",
1067 ptlrpc_import_state_name(imp->imp_state));
1068 seq_printf(m, "state_history:\n");
1069 k = imp->imp_state_hist_idx;
1070 for (j = 0; j < IMP_STATE_HIST_LEN; j++) {
1071 struct import_state_hist *ish =
1072 &imp->imp_state_hist[(k + j) % IMP_STATE_HIST_LEN];
1073 if (ish->ish_state == 0)
1075 seq_printf(m, " - [ %lld, %s ]\n", (s64)ish->ish_time,
1076 ptlrpc_import_state_name(ish->ish_state));
1082 EXPORT_SYMBOL(lprocfs_state_seq_show);
1084 int lprocfs_at_hist_helper(struct seq_file *m, struct adaptive_timeout *at)
1087 for (i = 0; i < AT_BINS; i++)
1088 seq_printf(m, "%3u ", at->at_hist[i]);
1089 seq_printf(m, "\n");
1092 EXPORT_SYMBOL(lprocfs_at_hist_helper);
1094 /* See also ptlrpc_lprocfs_timeouts_show_seq */
1095 static void lprocfs_timeouts_seq_show_locked(struct seq_file *m,
1096 struct obd_device *obd,
1097 struct obd_import *imp)
1099 unsigned int cur, worst;
1100 time64_t now, worstt;
1103 LASSERT(obd != NULL);
1105 now = ktime_get_real_seconds();
1107 /* Some network health info for kicks */
1108 seq_printf(m, "%-10s : %lld, %llds ago\n",
1109 "last reply", (s64)imp->imp_last_reply_time,
1110 (s64)(now - imp->imp_last_reply_time));
1112 cur = at_get(&imp->imp_at.iat_net_latency);
1113 worst = imp->imp_at.iat_net_latency.at_worst_ever;
1114 worstt = imp->imp_at.iat_net_latency.at_worst_time;
1115 seq_printf(m, "%-10s : cur %3u worst %3u (at %lld, %llds ago) ",
1116 "network", cur, worst, (s64)worstt, (s64)(now - worstt));
1117 lprocfs_at_hist_helper(m, &imp->imp_at.iat_net_latency);
1119 for(i = 0; i < IMP_AT_MAX_PORTALS; i++) {
1120 if (imp->imp_at.iat_portal[i] == 0)
1122 cur = at_get(&imp->imp_at.iat_service_estimate[i]);
1123 worst = imp->imp_at.iat_service_estimate[i].at_worst_ever;
1124 worstt = imp->imp_at.iat_service_estimate[i].at_worst_time;
1125 seq_printf(m, "portal %-2d : cur %3u worst %3u (at %lld, %llds ago) ",
1126 imp->imp_at.iat_portal[i], cur, worst, (s64)worstt,
1127 (s64)(now - worstt));
1128 lprocfs_at_hist_helper(m, &imp->imp_at.iat_service_estimate[i]);
1132 int lprocfs_timeouts_seq_show(struct seq_file *m, void *data)
1134 struct obd_device *obd = (struct obd_device *)data;
1135 struct obd_import *imp;
1138 with_imp_locked(obd, imp, rc)
1139 lprocfs_timeouts_seq_show_locked(m, obd, imp);
1142 EXPORT_SYMBOL(lprocfs_timeouts_seq_show);
1144 int lprocfs_connect_flags_seq_show(struct seq_file *m, void *data)
1146 struct obd_device *obd = data;
1149 struct obd_import *imp;
1152 with_imp_locked(obd, imp, rc) {
1153 flags = imp->imp_connect_data.ocd_connect_flags;
1154 flags2 = imp->imp_connect_data.ocd_connect_flags2;
1155 seq_printf(m, "flags=%#llx\n", flags);
1156 seq_printf(m, "flags2=%#llx\n", flags2);
1157 obd_connect_seq_flags2str(m, flags, flags2, "\n");
1158 seq_printf(m, "\n");
1163 EXPORT_SYMBOL(lprocfs_connect_flags_seq_show);
1165 static const struct attribute *obd_def_uuid_attrs[] = {
1166 &lustre_attr_uuid.attr,
1170 static const struct attribute *obd_def_attrs[] = {
1171 &lustre_attr_blocksize.attr,
1172 &lustre_attr_kbytestotal.attr,
1173 &lustre_attr_kbytesfree.attr,
1174 &lustre_attr_kbytesavail.attr,
1175 &lustre_attr_filestotal.attr,
1176 &lustre_attr_filesfree.attr,
1177 &lustre_attr_uuid.attr,
1181 static void obd_sysfs_release(struct kobject *kobj)
1183 struct obd_device *obd = container_of(kobj, struct obd_device,
1186 complete(&obd->obd_kobj_unregister);
1189 int lprocfs_obd_setup(struct obd_device *obd, bool uuid_only)
1191 struct lprocfs_vars *debugfs_vars = NULL;
1194 if (!obd || obd->obd_magic != OBD_DEVICE_MAGIC)
1197 rc = kobject_set_name(&obd->obd_kset.kobj, "%s", obd->obd_name);
1201 obd->obd_ktype.sysfs_ops = &lustre_sysfs_ops;
1202 obd->obd_ktype.release = obd_sysfs_release;
1204 obd->obd_kset.kobj.parent = &obd->obd_type->typ_kobj;
1205 obd->obd_kset.kobj.ktype = &obd->obd_ktype;
1206 init_completion(&obd->obd_kobj_unregister);
1207 rc = kset_register(&obd->obd_kset);
1212 obd->obd_attrs = obd_def_uuid_attrs;
1214 obd->obd_attrs = obd_def_attrs;
1216 rc = sysfs_create_files(&obd->obd_kset.kobj, obd->obd_attrs);
1218 kset_unregister(&obd->obd_kset);
1222 if (!obd->obd_type->typ_procroot)
1223 debugfs_vars = obd->obd_vars;
1224 obd->obd_debugfs_entry = ldebugfs_register(obd->obd_name,
1225 obd->obd_type->typ_debugfs_entry,
1227 if (IS_ERR_OR_NULL(obd->obd_debugfs_entry)) {
1228 rc = obd->obd_debugfs_entry ? PTR_ERR(obd->obd_debugfs_entry)
1230 CERROR("error %d setting up debugfs for %s\n",
1232 obd->obd_debugfs_entry = NULL;
1234 sysfs_remove_files(&obd->obd_kset.kobj, obd->obd_attrs);
1235 obd->obd_attrs = NULL;
1236 kset_unregister(&obd->obd_kset);
1240 if (obd->obd_proc_entry || !obd->obd_type->typ_procroot)
1241 GOTO(already_registered, rc);
1243 obd->obd_proc_entry = lprocfs_register(obd->obd_name,
1244 obd->obd_type->typ_procroot,
1245 obd->obd_vars, obd);
1246 if (IS_ERR(obd->obd_proc_entry)) {
1247 rc = PTR_ERR(obd->obd_proc_entry);
1248 CERROR("error %d setting up lprocfs for %s\n",rc,obd->obd_name);
1249 obd->obd_proc_entry = NULL;
1251 debugfs_remove_recursive(obd->obd_debugfs_entry);
1252 obd->obd_debugfs_entry = NULL;
1254 sysfs_remove_files(&obd->obd_kset.kobj, obd->obd_attrs);
1255 obd->obd_attrs = NULL;
1256 kset_unregister(&obd->obd_kset);
1262 EXPORT_SYMBOL(lprocfs_obd_setup);
1264 int lprocfs_obd_cleanup(struct obd_device *obd)
1269 if (obd->obd_proc_exports_entry) {
1270 /* Should be no exports left */
1271 lprocfs_remove(&obd->obd_proc_exports_entry);
1272 obd->obd_proc_exports_entry = NULL;
1275 if (obd->obd_proc_entry) {
1276 lprocfs_remove(&obd->obd_proc_entry);
1277 obd->obd_proc_entry = NULL;
1280 debugfs_remove_recursive(obd->obd_debugfs_entry);
1281 obd->obd_debugfs_entry = NULL;
1283 /* obd device never allocated a kset */
1284 if (!obd->obd_kset.kobj.state_initialized)
1287 if (obd->obd_attrs) {
1288 sysfs_remove_files(&obd->obd_kset.kobj, obd->obd_attrs);
1289 obd->obd_attrs = NULL;
1292 kset_unregister(&obd->obd_kset);
1293 wait_for_completion(&obd->obd_kobj_unregister);
1296 EXPORT_SYMBOL(lprocfs_obd_cleanup);
1298 int lprocfs_stats_alloc_one(struct lprocfs_stats *stats, unsigned int cpuid)
1300 struct lprocfs_counter *cntr;
1301 unsigned int percpusize;
1303 unsigned long flags = 0;
1306 LASSERT(stats->ls_percpu[cpuid] == NULL);
1307 LASSERT((stats->ls_flags & LPROCFS_STATS_FLAG_NOPERCPU) == 0);
1309 percpusize = lprocfs_stats_counter_size(stats);
1310 LIBCFS_ALLOC_ATOMIC(stats->ls_percpu[cpuid], percpusize);
1311 if (stats->ls_percpu[cpuid]) {
1313 if (unlikely(stats->ls_biggest_alloc_num <= cpuid)) {
1314 if (stats->ls_flags & LPROCFS_STATS_FLAG_IRQ_SAFE)
1315 spin_lock_irqsave(&stats->ls_lock, flags);
1317 spin_lock(&stats->ls_lock);
1318 if (stats->ls_biggest_alloc_num <= cpuid)
1319 stats->ls_biggest_alloc_num = cpuid + 1;
1320 if (stats->ls_flags & LPROCFS_STATS_FLAG_IRQ_SAFE) {
1321 spin_unlock_irqrestore(&stats->ls_lock, flags);
1323 spin_unlock(&stats->ls_lock);
1326 /* initialize the ls_percpu[cpuid] non-zero counter */
1327 for (i = 0; i < stats->ls_num; ++i) {
1328 cntr = lprocfs_stats_counter_get(stats, cpuid, i);
1329 cntr->lc_min = LC_MIN_INIT;
1335 struct lprocfs_stats *lprocfs_alloc_stats(unsigned int num,
1336 enum lprocfs_stats_flags flags)
1338 struct lprocfs_stats *stats;
1339 unsigned int num_entry;
1340 unsigned int percpusize = 0;
1346 if (lprocfs_no_percpu_stats != 0)
1347 flags |= LPROCFS_STATS_FLAG_NOPERCPU;
1349 if (flags & LPROCFS_STATS_FLAG_NOPERCPU)
1352 num_entry = num_possible_cpus();
1354 /* alloc percpu pointers for all possible cpu slots */
1355 LIBCFS_ALLOC(stats, offsetof(typeof(*stats), ls_percpu[num_entry]));
1359 stats->ls_num = num;
1360 stats->ls_flags = flags;
1361 spin_lock_init(&stats->ls_lock);
1363 /* alloc num of counter headers */
1364 LIBCFS_ALLOC(stats->ls_cnt_header,
1365 stats->ls_num * sizeof(struct lprocfs_counter_header));
1366 if (!stats->ls_cnt_header)
1369 if ((flags & LPROCFS_STATS_FLAG_NOPERCPU) != 0) {
1370 /* contains only one set counters */
1371 percpusize = lprocfs_stats_counter_size(stats);
1372 LIBCFS_ALLOC_ATOMIC(stats->ls_percpu[0], percpusize);
1373 if (!stats->ls_percpu[0])
1375 stats->ls_biggest_alloc_num = 1;
1376 } else if ((flags & LPROCFS_STATS_FLAG_IRQ_SAFE) != 0) {
1377 /* alloc all percpu data, currently only obd_memory use this */
1378 for (i = 0; i < num_entry; ++i)
1379 if (lprocfs_stats_alloc_one(stats, i) < 0)
1386 lprocfs_free_stats(&stats);
1389 EXPORT_SYMBOL(lprocfs_alloc_stats);
1391 void lprocfs_free_stats(struct lprocfs_stats **statsh)
1393 struct lprocfs_stats *stats = *statsh;
1394 unsigned int num_entry;
1395 unsigned int percpusize;
1398 if (!stats || stats->ls_num == 0)
1402 if (stats->ls_flags & LPROCFS_STATS_FLAG_NOPERCPU)
1405 num_entry = num_possible_cpus();
1407 percpusize = lprocfs_stats_counter_size(stats);
1408 for (i = 0; i < num_entry; i++)
1409 if (stats->ls_percpu[i])
1410 LIBCFS_FREE(stats->ls_percpu[i], percpusize);
1411 if (stats->ls_cnt_header)
1412 LIBCFS_FREE(stats->ls_cnt_header, stats->ls_num *
1413 sizeof(struct lprocfs_counter_header));
1414 LIBCFS_FREE(stats, offsetof(typeof(*stats), ls_percpu[num_entry]));
1416 EXPORT_SYMBOL(lprocfs_free_stats);
1418 u64 lprocfs_stats_collector(struct lprocfs_stats *stats, int idx,
1419 enum lprocfs_fields_flags field)
1421 unsigned long flags = 0;
1422 unsigned int num_cpu;
1428 num_cpu = lprocfs_stats_lock(stats, LPROCFS_GET_NUM_CPU, &flags);
1429 for (i = 0; i < num_cpu; i++) {
1430 struct lprocfs_counter *cntr;
1432 if (!stats->ls_percpu[i])
1435 cntr = lprocfs_stats_counter_get(stats, i, idx);
1436 ret += lprocfs_read_helper(cntr, &stats->ls_cnt_header[idx],
1437 stats->ls_flags, field);
1439 lprocfs_stats_unlock(stats, LPROCFS_GET_NUM_CPU, &flags);
1442 EXPORT_SYMBOL(lprocfs_stats_collector);
1444 void lprocfs_clear_stats(struct lprocfs_stats *stats)
1446 struct lprocfs_counter *percpu_cntr;
1449 unsigned int num_entry;
1450 unsigned long flags = 0;
1452 num_entry = lprocfs_stats_lock(stats, LPROCFS_GET_NUM_CPU, &flags);
1454 for (i = 0; i < num_entry; i++) {
1455 if (!stats->ls_percpu[i])
1457 for (j = 0; j < stats->ls_num; j++) {
1458 percpu_cntr = lprocfs_stats_counter_get(stats, i, j);
1459 percpu_cntr->lc_count = 0;
1460 percpu_cntr->lc_min = LC_MIN_INIT;
1461 percpu_cntr->lc_max = 0;
1462 percpu_cntr->lc_sumsquare = 0;
1463 percpu_cntr->lc_sum = 0;
1464 if (stats->ls_flags & LPROCFS_STATS_FLAG_IRQ_SAFE)
1465 percpu_cntr->lc_sum_irq = 0;
1469 lprocfs_stats_unlock(stats, LPROCFS_GET_NUM_CPU, &flags);
1471 EXPORT_SYMBOL(lprocfs_clear_stats);
1473 static ssize_t lprocfs_stats_seq_write(struct file *file,
1474 const char __user *buf,
1475 size_t len, loff_t *off)
1477 struct seq_file *seq = file->private_data;
1478 struct lprocfs_stats *stats = seq->private;
1480 lprocfs_clear_stats(stats);
1485 static void *lprocfs_stats_seq_start(struct seq_file *p, loff_t *pos)
1487 struct lprocfs_stats *stats = p->private;
1489 return (*pos < stats->ls_num) ? pos : NULL;
1492 static void lprocfs_stats_seq_stop(struct seq_file *p, void *v)
1496 static void *lprocfs_stats_seq_next(struct seq_file *p, void *v, loff_t *pos)
1500 return lprocfs_stats_seq_start(p, pos);
1503 /* seq file export of one lprocfs counter */
1504 static int lprocfs_stats_seq_show(struct seq_file *p, void *v)
1506 struct lprocfs_stats *stats = p->private;
1507 struct lprocfs_counter_header *hdr;
1508 struct lprocfs_counter ctr;
1509 int idx = *(loff_t *)v;
1512 struct timespec64 now;
1514 ktime_get_real_ts64(&now);
1515 seq_printf(p, "%-25s %llu.%09lu secs.nsecs\n",
1516 "snapshot_time", (s64)now.tv_sec, now.tv_nsec);
1519 hdr = &stats->ls_cnt_header[idx];
1520 lprocfs_stats_collect(stats, idx, &ctr);
1522 if (ctr.lc_count == 0)
1525 seq_printf(p, "%-25s %lld samples [%s]", hdr->lc_name,
1526 ctr.lc_count, hdr->lc_units);
1528 if ((hdr->lc_config & LPROCFS_CNTR_AVGMINMAX) && ctr.lc_count > 0) {
1529 seq_printf(p, " %lld %lld %lld",
1530 ctr.lc_min, ctr.lc_max, ctr.lc_sum);
1531 if (hdr->lc_config & LPROCFS_CNTR_STDDEV)
1532 seq_printf(p, " %llu", ctr.lc_sumsquare);
1538 static const struct seq_operations lprocfs_stats_seq_sops = {
1539 .start = lprocfs_stats_seq_start,
1540 .stop = lprocfs_stats_seq_stop,
1541 .next = lprocfs_stats_seq_next,
1542 .show = lprocfs_stats_seq_show,
1545 static int lprocfs_stats_seq_open(struct inode *inode, struct file *file)
1547 struct seq_file *seq;
1550 rc = LPROCFS_ENTRY_CHECK(inode);
1554 rc = seq_open(file, &lprocfs_stats_seq_sops);
1557 seq = file->private_data;
1558 seq->private = inode->i_private ? inode->i_private : PDE_DATA(inode);
1562 static const struct file_operations lprocfs_stats_seq_fops = {
1563 .owner = THIS_MODULE,
1564 .open = lprocfs_stats_seq_open,
1566 .write = lprocfs_stats_seq_write,
1567 .llseek = seq_lseek,
1568 .release = lprocfs_seq_release,
1571 int ldebugfs_register_stats(struct dentry *parent, const char *name,
1572 struct lprocfs_stats *stats)
1574 struct dentry *entry;
1576 LASSERT(!IS_ERR_OR_NULL(parent));
1578 entry = debugfs_create_file(name, 0644, parent, stats,
1579 &lprocfs_stats_seq_fops);
1580 if (IS_ERR_OR_NULL(entry))
1581 return entry ? PTR_ERR(entry) : -ENOMEM;
1585 EXPORT_SYMBOL_GPL(ldebugfs_register_stats);
1587 int lprocfs_register_stats(struct proc_dir_entry *root, const char *name,
1588 struct lprocfs_stats *stats)
1590 struct proc_dir_entry *entry;
1591 LASSERT(root != NULL);
1593 entry = proc_create_data(name, 0644, root,
1594 &lprocfs_stats_seq_fops, stats);
1599 EXPORT_SYMBOL(lprocfs_register_stats);
1601 void lprocfs_counter_init(struct lprocfs_stats *stats, int index,
1602 unsigned conf, const char *name, const char *units)
1604 struct lprocfs_counter_header *header;
1605 struct lprocfs_counter *percpu_cntr;
1606 unsigned long flags = 0;
1608 unsigned int num_cpu;
1610 LASSERT(stats != NULL);
1612 header = &stats->ls_cnt_header[index];
1613 LASSERTF(header != NULL, "Failed to allocate stats header:[%d]%s/%s\n",
1614 index, name, units);
1616 header->lc_config = conf;
1617 header->lc_name = name;
1618 header->lc_units = units;
1620 num_cpu = lprocfs_stats_lock(stats, LPROCFS_GET_NUM_CPU, &flags);
1621 for (i = 0; i < num_cpu; ++i) {
1622 if (!stats->ls_percpu[i])
1624 percpu_cntr = lprocfs_stats_counter_get(stats, i, index);
1625 percpu_cntr->lc_count = 0;
1626 percpu_cntr->lc_min = LC_MIN_INIT;
1627 percpu_cntr->lc_max = 0;
1628 percpu_cntr->lc_sumsquare = 0;
1629 percpu_cntr->lc_sum = 0;
1630 if ((stats->ls_flags & LPROCFS_STATS_FLAG_IRQ_SAFE) != 0)
1631 percpu_cntr->lc_sum_irq = 0;
1633 lprocfs_stats_unlock(stats, LPROCFS_GET_NUM_CPU, &flags);
1635 EXPORT_SYMBOL(lprocfs_counter_init);
1637 static const char * const mps_stats[] = {
1638 [LPROC_MD_CLOSE] = "close",
1639 [LPROC_MD_CREATE] = "create",
1640 [LPROC_MD_ENQUEUE] = "enqueue",
1641 [LPROC_MD_GETATTR] = "getattr",
1642 [LPROC_MD_INTENT_LOCK] = "intent_lock",
1643 [LPROC_MD_LINK] = "link",
1644 [LPROC_MD_RENAME] = "rename",
1645 [LPROC_MD_SETATTR] = "setattr",
1646 [LPROC_MD_FSYNC] = "fsync",
1647 [LPROC_MD_READ_PAGE] = "read_page",
1648 [LPROC_MD_UNLINK] = "unlink",
1649 [LPROC_MD_SETXATTR] = "setxattr",
1650 [LPROC_MD_GETXATTR] = "getxattr",
1651 [LPROC_MD_INTENT_GETATTR_ASYNC] = "intent_getattr_async",
1652 [LPROC_MD_REVALIDATE_LOCK] = "revalidate_lock",
1655 int lprocfs_alloc_md_stats(struct obd_device *obd,
1656 unsigned int num_private_stats)
1658 struct lprocfs_stats *stats;
1659 unsigned int num_stats;
1663 * TODO Ensure that this function is only used where
1664 * appropriate by adding an assertion to the effect that
1665 * obd->obd_type->typ_md_ops is not NULL. We can't do this now
1666 * because mdt_procfs_init() uses this function to allocate
1667 * the stats backing /proc/fs/lustre/mdt/.../md_stats but the
1668 * mdt layer does not use the md_ops interface. This is
1669 * confusing and a waste of memory. See LU-2484.
1671 LASSERT(obd->obd_proc_entry != NULL);
1672 LASSERT(obd->obd_md_stats == NULL);
1674 num_stats = ARRAY_SIZE(mps_stats) + num_private_stats;
1675 stats = lprocfs_alloc_stats(num_stats, 0);
1679 for (i = 0; i < ARRAY_SIZE(mps_stats); i++) {
1680 lprocfs_counter_init(stats, i, 0, mps_stats[i], "reqs");
1681 if (!stats->ls_cnt_header[i].lc_name) {
1682 CERROR("Missing md_stat initializer md_op operation at offset %d. Aborting.\n",
1688 rc = lprocfs_register_stats(obd->obd_proc_entry, "md_stats", stats);
1690 lprocfs_free_stats(&stats);
1692 obd->obd_md_stats = stats;
1697 EXPORT_SYMBOL(lprocfs_alloc_md_stats);
1699 void lprocfs_free_md_stats(struct obd_device *obd)
1701 struct lprocfs_stats *stats = obd->obd_md_stats;
1704 obd->obd_md_stats = NULL;
1705 lprocfs_free_stats(&stats);
1708 EXPORT_SYMBOL(lprocfs_free_md_stats);
1710 void lprocfs_init_ldlm_stats(struct lprocfs_stats *ldlm_stats)
1712 lprocfs_counter_init(ldlm_stats,
1713 LDLM_ENQUEUE - LDLM_FIRST_OPC,
1714 0, "ldlm_enqueue", "reqs");
1715 lprocfs_counter_init(ldlm_stats,
1716 LDLM_CONVERT - LDLM_FIRST_OPC,
1717 0, "ldlm_convert", "reqs");
1718 lprocfs_counter_init(ldlm_stats,
1719 LDLM_CANCEL - LDLM_FIRST_OPC,
1720 0, "ldlm_cancel", "reqs");
1721 lprocfs_counter_init(ldlm_stats,
1722 LDLM_BL_CALLBACK - LDLM_FIRST_OPC,
1723 0, "ldlm_bl_callback", "reqs");
1724 lprocfs_counter_init(ldlm_stats,
1725 LDLM_CP_CALLBACK - LDLM_FIRST_OPC,
1726 0, "ldlm_cp_callback", "reqs");
1727 lprocfs_counter_init(ldlm_stats,
1728 LDLM_GL_CALLBACK - LDLM_FIRST_OPC,
1729 0, "ldlm_gl_callback", "reqs");
1731 EXPORT_SYMBOL(lprocfs_init_ldlm_stats);
1733 __s64 lprocfs_read_helper(struct lprocfs_counter *lc,
1734 struct lprocfs_counter_header *header,
1735 enum lprocfs_stats_flags flags,
1736 enum lprocfs_fields_flags field)
1744 case LPROCFS_FIELDS_FLAGS_CONFIG:
1745 ret = header->lc_config;
1747 case LPROCFS_FIELDS_FLAGS_SUM:
1749 if ((flags & LPROCFS_STATS_FLAG_IRQ_SAFE) != 0)
1750 ret += lc->lc_sum_irq;
1752 case LPROCFS_FIELDS_FLAGS_MIN:
1755 case LPROCFS_FIELDS_FLAGS_MAX:
1758 case LPROCFS_FIELDS_FLAGS_AVG:
1759 ret = (lc->lc_max - lc->lc_min) / 2;
1761 case LPROCFS_FIELDS_FLAGS_SUMSQUARE:
1762 ret = lc->lc_sumsquare;
1764 case LPROCFS_FIELDS_FLAGS_COUNT:
1772 EXPORT_SYMBOL(lprocfs_read_helper);
1775 * string_to_size - convert ASCII string representing a numerical
1776 * value with optional units to 64-bit binary value
1778 * @size: The numerical value extract out of @buffer
1779 * @buffer: passed in string to parse
1780 * @count: length of the @buffer
1782 * This function returns a 64-bit binary value if @buffer contains a valid
1783 * numerical string. The string is parsed to 3 significant figures after
1784 * the decimal point. Support the string containing an optional units at
1785 * the end which can be base 2 or base 10 in value. If no units are given
1786 * the string is assumed to just a numerical value.
1788 * Returns: @count if the string is successfully parsed,
1789 * -errno on invalid input strings. Error values:
1791 * - ``-EINVAL``: @buffer is not a proper numerical string
1792 * - ``-EOVERFLOW``: results does not fit into 64 bits.
1793 * - ``-E2BIG ``: @buffer is not large
1795 int string_to_size(u64 *size, const char *buffer, size_t count)
1797 /* For string_get_size() it can support values above exabytes,
1798 * (ZiB, YiB) due to breaking the return value into a size and
1799 * bulk size to avoid 64 bit overflow. We don't break the size
1800 * up into block size units so we don't support ZiB or YiB.
1802 static const char *const units_10[] = {
1803 "kB", "MB", "GB", "TB", "PB", "EB"
1805 static const char *const units_2[] = {
1806 "KiB", "MiB", "GiB", "TiB", "PiB", "EiB"
1808 static const char *const *const units_str[] = {
1809 [STRING_UNITS_2] = units_2,
1810 [STRING_UNITS_10] = units_10,
1812 static const unsigned int coeff[] = {
1813 [STRING_UNITS_10] = 1000,
1814 [STRING_UNITS_2] = 1024,
1816 enum string_size_units unit;
1817 u64 whole, blk_size = 1;
1818 char kernbuf[22], *end;
1823 if (count >= sizeof(kernbuf))
1827 /* 'iB' is used for based 2 numbers. If @buffer contains only a 'B'
1828 * or only numbers then we treat it as a direct number which doesn't
1829 * matter if its STRING_UNITS_2 or STRING_UNIT_10.
1831 unit = strstr(buffer, "iB") ? STRING_UNITS_2 : STRING_UNITS_10;
1832 i = unit == STRING_UNITS_2 ? ARRAY_SIZE(units_2) - 1 :
1833 ARRAY_SIZE(units_10) - 1;
1835 end = strstr(buffer, units_str[unit][i]);
1838 blk_size *= coeff[unit];
1844 /* as 'B' is a substring of all units, we need to handle it
1848 /* 'B' is only acceptable letter at this point */
1849 end = strchr(buffer, 'B');
1853 if (count - len > 2 ||
1854 (count - len == 2 && strcmp(end, "B\n") != 0))
1857 /* kstrtoull will error out if it has non digits */
1861 end = strchr(buffer, '.');
1863 /* need to limit 3 decimal places */
1864 char rem[4] = "000";
1871 /* limit to 3 decimal points */
1872 off = min_t(size_t, 3, strspn(end, "0123456789"));
1873 /* need to limit frac_d to a u32 */
1874 memcpy(rem, end, off);
1875 rc = kstrtoull(rem, 10, &frac);
1879 if (fls64(frac) + fls64(blk_size) - 1 > 64)
1887 snprintf(kernbuf, sizeof(kernbuf), "%.*s", (int)len, buffer);
1888 rc = kstrtoull(kernbuf, 10, &whole);
1892 if (whole != 0 && fls64(whole) + fls64(blk_size) - 1 > 64)
1895 *size += whole * blk_size;
1899 EXPORT_SYMBOL(string_to_size);
1902 * sysfs_memparse - parse a ASCII string to 64-bit binary value,
1903 * with optional units
1905 * @buffer: kernel pointer to input string
1906 * @count: number of bytes in the input @buffer
1907 * @val: (output) binary value returned to caller
1908 * @defunit: default unit suffix to use if none is provided
1910 * Parses a string into a number. The number stored at @buffer is
1911 * potentially suffixed with K, M, G, T, P, E. Besides these other
1912 * valid suffix units are shown in the string_to_size() function.
1913 * If the string lacks a suffix then the defunit is used. The defunit
1914 * should be given as a binary unit (e.g. MiB) as that is the standard
1915 * for tunables in Lustre. If no unit suffix is given (e.g. 'G'), then
1916 * it is assumed to be in binary units.
1918 * Returns: 0 on success or -errno on failure.
1920 int sysfs_memparse(const char *buffer, size_t count, u64 *val,
1921 const char *defunit)
1926 if (count >= sizeof(param))
1929 count = strlen(buffer);
1930 if (count && buffer[count - 1] == '\n')
1936 if (isalpha(buffer[count - 1])) {
1937 if (buffer[count - 1] != 'B') {
1938 scnprintf(param, sizeof(param), "%.*siB",
1939 (int)count, buffer);
1941 memcpy(param, buffer, sizeof(param));
1944 scnprintf(param, sizeof(param), "%.*s%s", (int)count,
1948 rc = string_to_size(val, param, strlen(param));
1949 return rc < 0 ? rc : 0;
1951 EXPORT_SYMBOL(sysfs_memparse);
1953 /* Obtains the conversion factor for the unit specified */
1954 static int get_mult(char unit, __u64 *mult)
1959 /* peta, tera, giga, mega, and kilo */
1980 /* some tests expect % to be accepted */
1994 * Ensures the numeric string is valid. The function provides the final
1995 * multiplier in the case a unit exists at the end of the string. It also
1996 * locates the start of the whole and fractional parts (if any). This
1997 * function modifies the string so kstrtoull can be used to parse both
1998 * the whole and fraction portions. This function also figures out
1999 * the base of the number.
2001 static int preprocess_numeric_str(char *buffer, __u64 *mult, __u64 def_mult,
2002 bool allow_units, char **whole, char **frac,
2005 bool hit_decimal = false;
2006 bool hit_unit = false;
2014 /* a hex string if it starts with "0x" */
2015 if (buffer[0] == '0' && tolower(buffer[1]) == 'x') {
2023 /* allow for a single new line before the null terminator */
2024 if (*buffer == '\n') {
2034 /* any chars after our unit indicates a malformed string */
2038 /* ensure we only hit one decimal */
2039 if (*buffer == '.') {
2043 /* if past start, there's a whole part */
2044 if (start != buffer)
2050 } else if (!isdigit(*buffer) &&
2051 !(*base == 16 && isxdigit(*buffer))) {
2053 /* if we allow units, attempt to get mult */
2055 rc = get_mult(*buffer, mult);
2059 /* string stops here, but keep processing */
2071 /* hit a decimal, make sure there's a fractional part */
2077 /* didn't hit a decimal, but may have a whole part */
2078 if (start != buffer && *start)
2082 /* malformed string if we didn't get anything */
2083 if (!*frac && !*whole)
2090 * Parses a numeric string which can contain a whole and fraction portion
2091 * into a __u64. Accepts a multiplier to apply to the value parsed. Also
2092 * allows the string to have a unit at the end. The function handles
2093 * wrapping of the final unsigned value.
2095 static int str_to_u64_parse(char *buffer, unsigned long count,
2096 __u64 *val, __u64 def_mult, bool allow_units)
2100 unsigned int frac_d = 1;
2101 __u64 wrap_indicator = ULLONG_MAX;
2106 unsigned int base = 10;
2108 rc = preprocess_numeric_str(buffer, &mult, def_mult, allow_units,
2109 &strwhole, &strfrac, &base);
2119 /* the multiplier limits how large the value can be */
2120 wrap_indicator = div64_u64(wrap_indicator, mult);
2123 rc = kstrtoull(strwhole, base, &whole);
2127 if (whole > wrap_indicator)
2134 if (strlen(strfrac) > 10)
2137 rc = kstrtoull(strfrac, base, &frac);
2141 /* determine power of fractional portion */
2147 /* fractional portion is too large to perform calculation */
2148 if (frac > wrap_indicator)
2152 do_div(frac, frac_d);
2155 /* check that the sum of whole and fraction fits in u64 */
2156 if (whole > (ULLONG_MAX - frac))
2159 *val = whole + frac;
2165 * This function parses numeric/hex strings into __s64. It accepts a multiplier
2166 * which will apply to the value parsed. It also can allow the string to
2167 * have a unit as the last character. The function handles overflow/underflow
2168 * of the signed integer.
2170 int lu_str_to_s64(char *buffer, unsigned long count, __s64 *val, char defunit)
2174 unsigned int offset = 0;
2175 int signed sign = 1;
2176 __u64 max = LLONG_MAX;
2179 if (defunit != '1') {
2180 rc = get_mult(defunit, &mult);
2185 /* keep track of our sign */
2186 if (*buffer == '-') {
2189 /* equivalent to max = -LLONG_MIN, avoids overflow */
2193 rc = str_to_u64_parse(buffer + offset, count - offset,
2198 /* check for overflow/underflow */
2202 *val = (__s64)tmp * sign;
2206 EXPORT_SYMBOL(lu_str_to_s64);
2208 /* identical to s64 version, but does not handle overflow */
2209 static int str_to_u64_internal(const char __user *buffer, unsigned long count,
2210 __u64 *val, __u64 def_mult, bool allow_units)
2213 unsigned int offset = 0;
2216 if (count > (sizeof(kernbuf) - 1))
2219 if (copy_from_user(kernbuf, buffer, count))
2222 kernbuf[count] = '\0';
2224 rc = str_to_u64_parse(kernbuf + offset, count - offset,
2225 val, def_mult, allow_units);
2232 * Convert a user string into a signed 64 bit number. This function produces
2233 * an error when the value parsed from the string times multiplier underflows or
2234 * overflows. This function only accepts strings that contains digits, an
2235 * optional decimal, and a char representing a unit at the end. If a unit is
2236 * specified in the string, the multiplier provided by the caller is ignored.
2237 * This function can also accept hexadecimal strings which are prefixed with
2240 * \param[in] buffer string consisting of numbers, a decimal, and a unit
2241 * \param[in] count buffer length
2242 * \param[in] val if successful, the value represented by the string
2243 * \param[in] defunit default unit if string doesn't contain one
2245 * \retval 0 on success
2246 * \retval negative number on error
2248 int lprocfs_str_with_units_to_s64(const char __user *buffer,
2249 unsigned long count, __s64 *val, char defunit)
2253 if (count > (sizeof(kernbuf) - 1))
2256 if (copy_from_user(kernbuf, buffer, count))
2259 kernbuf[count] = '\0';
2261 return lu_str_to_s64(kernbuf, count, val, defunit);
2263 EXPORT_SYMBOL(lprocfs_str_with_units_to_s64);
2265 /* identical to s64 version above, but does not handle overflow */
2266 int lprocfs_str_with_units_to_u64(const char __user *buffer,
2267 unsigned long count, __u64 *val, char defunit)
2272 if (defunit != '1') {
2273 rc = get_mult(defunit, &mult);
2278 return str_to_u64_internal(buffer, count, val, mult, true);
2280 EXPORT_SYMBOL(lprocfs_str_with_units_to_u64);
2282 char *lprocfs_strnstr(const char *s1, const char *s2, size_t len)
2291 if (!memcmp(s1, s2, l2))
2297 EXPORT_SYMBOL(lprocfs_strnstr);
2300 * Find the string \a name in the input \a buffer, and return a pointer to the
2301 * value immediately following \a name, reducing \a count appropriately.
2302 * If \a name is not found the original \a buffer is returned.
2304 char *lprocfs_find_named_value(const char *buffer, const char *name,
2308 size_t buflen = *count;
2310 /* there is no strnstr() in rhel5 and ubuntu kernels */
2311 val = lprocfs_strnstr(buffer, name, buflen);
2313 return (char *)buffer;
2315 val += strlen(name); /* skip prefix */
2316 while (val < buffer + buflen && isspace(*val)) /* skip separator */
2320 while (val < buffer + buflen && isalnum(*val)) {
2325 return val - *count;
2327 EXPORT_SYMBOL(lprocfs_find_named_value);
2329 int ldebugfs_seq_create(struct dentry *parent, const char *name, umode_t mode,
2330 const struct file_operations *seq_fops, void *data)
2332 struct dentry *entry;
2334 /* Disallow secretly (un)writable entries. */
2335 LASSERT((!seq_fops->write) == (!(mode & 0222)));
2337 entry = debugfs_create_file(name, mode, parent, data, seq_fops);
2338 if (IS_ERR_OR_NULL(entry))
2339 return entry ? PTR_ERR(entry) : -ENOMEM;
2343 EXPORT_SYMBOL_GPL(ldebugfs_seq_create);
2345 int lprocfs_seq_create(struct proc_dir_entry *parent,
2348 const struct file_operations *seq_fops,
2351 struct proc_dir_entry *entry;
2354 /* Disallow secretly (un)writable entries. */
2355 LASSERT((seq_fops->write == NULL) == ((mode & 0222) == 0));
2357 entry = proc_create_data(name, mode, parent, seq_fops, data);
2364 EXPORT_SYMBOL(lprocfs_seq_create);
2366 int lprocfs_obd_seq_create(struct obd_device *dev,
2369 const struct file_operations *seq_fops,
2372 return (lprocfs_seq_create(dev->obd_proc_entry, name,
2373 mode, seq_fops, data));
2375 EXPORT_SYMBOL(lprocfs_obd_seq_create);
2377 void lprocfs_oh_tally(struct obd_histogram *oh, unsigned int value)
2379 if (value >= OBD_HIST_MAX)
2380 value = OBD_HIST_MAX - 1;
2382 spin_lock(&oh->oh_lock);
2383 oh->oh_buckets[value]++;
2384 spin_unlock(&oh->oh_lock);
2386 EXPORT_SYMBOL(lprocfs_oh_tally);
2388 void lprocfs_oh_tally_log2(struct obd_histogram *oh, unsigned int value)
2390 unsigned int val = 0;
2392 if (likely(value != 0))
2393 val = min(fls(value - 1), OBD_HIST_MAX);
2395 lprocfs_oh_tally(oh, val);
2397 EXPORT_SYMBOL(lprocfs_oh_tally_log2);
2399 unsigned long lprocfs_oh_sum(struct obd_histogram *oh)
2401 unsigned long ret = 0;
2404 for (i = 0; i < OBD_HIST_MAX; i++)
2405 ret += oh->oh_buckets[i];
2408 EXPORT_SYMBOL(lprocfs_oh_sum);
2410 void lprocfs_oh_clear(struct obd_histogram *oh)
2412 spin_lock(&oh->oh_lock);
2413 memset(oh->oh_buckets, 0, sizeof(oh->oh_buckets));
2414 spin_unlock(&oh->oh_lock);
2416 EXPORT_SYMBOL(lprocfs_oh_clear);
2418 ssize_t lustre_attr_show(struct kobject *kobj,
2419 struct attribute *attr, char *buf)
2421 struct lustre_attr *a = container_of(attr, struct lustre_attr, attr);
2423 return a->show ? a->show(kobj, attr, buf) : 0;
2425 EXPORT_SYMBOL_GPL(lustre_attr_show);
2427 ssize_t lustre_attr_store(struct kobject *kobj, struct attribute *attr,
2428 const char *buf, size_t len)
2430 struct lustre_attr *a = container_of(attr, struct lustre_attr, attr);
2432 return a->store ? a->store(kobj, attr, buf, len) : len;
2434 EXPORT_SYMBOL_GPL(lustre_attr_store);
2436 const struct sysfs_ops lustre_sysfs_ops = {
2437 .show = lustre_attr_show,
2438 .store = lustre_attr_store,
2440 EXPORT_SYMBOL_GPL(lustre_sysfs_ops);
2442 int lprocfs_obd_max_pages_per_rpc_seq_show(struct seq_file *m, void *data)
2444 struct obd_device *dev = data;
2445 struct client_obd *cli = &dev->u.cli;
2447 spin_lock(&cli->cl_loi_list_lock);
2448 seq_printf(m, "%d\n", cli->cl_max_pages_per_rpc);
2449 spin_unlock(&cli->cl_loi_list_lock);
2452 EXPORT_SYMBOL(lprocfs_obd_max_pages_per_rpc_seq_show);
2454 ssize_t lprocfs_obd_max_pages_per_rpc_seq_write(struct file *file,
2455 const char __user *buffer,
2456 size_t count, loff_t *off)
2458 struct seq_file *m = file->private_data;
2459 struct obd_device *dev = m->private;
2460 struct client_obd *cli = &dev->u.cli;
2461 struct obd_import *imp;
2462 struct obd_connect_data *ocd;
2466 rc = lprocfs_str_with_units_to_s64(buffer, count, &val, '1');
2472 /* if the max_pages is specified in bytes, convert to pages */
2473 if (val >= ONE_MB_BRW_SIZE)
2476 with_imp_locked(dev, imp, rc) {
2477 ocd = &imp->imp_connect_data;
2478 chunk_mask = ~((1 << (cli->cl_chunkbits - PAGE_SHIFT)) - 1);
2479 /* max_pages_per_rpc must be chunk aligned */
2480 val = (val + ~chunk_mask) & chunk_mask;
2481 if (val == 0 || (ocd->ocd_brw_size != 0 &&
2482 val > ocd->ocd_brw_size >> PAGE_SHIFT)) {
2485 spin_lock(&cli->cl_loi_list_lock);
2486 cli->cl_max_pages_per_rpc = val;
2487 client_adjust_max_dirty(cli);
2488 spin_unlock(&cli->cl_loi_list_lock);
2494 EXPORT_SYMBOL(lprocfs_obd_max_pages_per_rpc_seq_write);
2496 ssize_t short_io_bytes_show(struct kobject *kobj, struct attribute *attr,
2499 struct obd_device *dev = container_of(kobj, struct obd_device,
2501 struct client_obd *cli = &dev->u.cli;
2504 spin_lock(&cli->cl_loi_list_lock);
2505 rc = sprintf(buf, "%d\n", cli->cl_max_short_io_bytes);
2506 spin_unlock(&cli->cl_loi_list_lock);
2509 EXPORT_SYMBOL(short_io_bytes_show);
2511 /* Used to catch people who think they're specifying pages. */
2512 #define MIN_SHORT_IO_BYTES 64U
2514 ssize_t short_io_bytes_store(struct kobject *kobj, struct attribute *attr,
2515 const char *buffer, size_t count)
2517 struct obd_device *dev = container_of(kobj, struct obd_device,
2519 struct client_obd *cli = &dev->u.cli;
2524 if (count >= sizeof(kernbuf))
2527 memcpy(kernbuf, buffer, count);
2528 kernbuf[count] = '\0';
2529 rc = lu_str_to_s64(kernbuf, count, &val, '1');
2534 val = OBD_DEF_SHORT_IO_BYTES;
2536 if (val && (val < MIN_SHORT_IO_BYTES || val > LNET_MTU))
2537 GOTO(out, rc = -ERANGE);
2541 spin_lock(&cli->cl_loi_list_lock);
2542 cli->cl_max_short_io_bytes = min_t(u64, val, OST_MAX_SHORT_IO_BYTES);
2543 spin_unlock(&cli->cl_loi_list_lock);
2548 EXPORT_SYMBOL(short_io_bytes_store);
2550 int lprocfs_wr_root_squash(const char __user *buffer, unsigned long count,
2551 struct root_squash_info *squash, char *name)
2554 char kernbuf[64], *tmp, *errmsg;
2555 unsigned long uid, gid;
2558 if (count >= sizeof(kernbuf)) {
2559 errmsg = "string too long";
2560 GOTO(failed_noprint, rc = -EINVAL);
2562 if (copy_from_user(kernbuf, buffer, count)) {
2563 errmsg = "bad address";
2564 GOTO(failed_noprint, rc = -EFAULT);
2566 kernbuf[count] = '\0';
2568 /* look for uid gid separator */
2569 tmp = strchr(kernbuf, ':');
2571 errmsg = "needs uid:gid format";
2572 GOTO(failed, rc = -EINVAL);
2578 if (kstrtoul(kernbuf, 0, &uid) != 0) {
2580 GOTO(failed, rc = -EINVAL);
2584 if (kstrtoul(tmp, 0, &gid) != 0) {
2586 GOTO(failed, rc = -EINVAL);
2589 squash->rsi_uid = uid;
2590 squash->rsi_gid = gid;
2592 LCONSOLE_INFO("%s: root_squash is set to %u:%u\n",
2593 name, squash->rsi_uid, squash->rsi_gid);
2601 CWARN("%s: failed to set root_squash to \"%s\", %s, rc = %d\n",
2602 name, kernbuf, errmsg, rc);
2605 CWARN("%s: failed to set root_squash due to %s, rc = %d\n",
2609 EXPORT_SYMBOL(lprocfs_wr_root_squash);
2612 int lprocfs_wr_nosquash_nids(const char __user *buffer, unsigned long count,
2613 struct root_squash_info *squash, char *name)
2616 char *kernbuf = NULL;
2623 errmsg = "string too long";
2624 GOTO(failed, rc = -EINVAL);
2627 OBD_ALLOC(kernbuf, count + 1);
2629 errmsg = "no memory";
2630 GOTO(failed, rc = -ENOMEM);
2632 if (copy_from_user(kernbuf, buffer, count)) {
2633 errmsg = "bad address";
2634 GOTO(failed, rc = -EFAULT);
2636 kernbuf[count] = '\0';
2638 if (count > 0 && kernbuf[count - 1] == '\n')
2641 if ((len == 4 && strncmp(kernbuf, "NONE", len) == 0) ||
2642 (len == 5 && strncmp(kernbuf, "clear", len) == 0)) {
2643 /* empty string is special case */
2644 spin_lock(&squash->rsi_lock);
2645 if (!list_empty(&squash->rsi_nosquash_nids))
2646 cfs_free_nidlist(&squash->rsi_nosquash_nids);
2647 spin_unlock(&squash->rsi_lock);
2648 LCONSOLE_INFO("%s: nosquash_nids is cleared\n", name);
2649 OBD_FREE(kernbuf, count + 1);
2653 if (cfs_parse_nidlist(kernbuf, count, &tmp) <= 0) {
2654 errmsg = "can't parse";
2655 GOTO(failed, rc = -EINVAL);
2657 LCONSOLE_INFO("%s: nosquash_nids set to %s\n",
2659 OBD_FREE(kernbuf, count + 1);
2662 spin_lock(&squash->rsi_lock);
2663 if (!list_empty(&squash->rsi_nosquash_nids))
2664 cfs_free_nidlist(&squash->rsi_nosquash_nids);
2665 list_splice(&tmp, &squash->rsi_nosquash_nids);
2666 spin_unlock(&squash->rsi_lock);
2672 CWARN("%s: failed to set nosquash_nids to \"%s\", %s rc = %d\n",
2673 name, kernbuf, errmsg, rc);
2674 OBD_FREE(kernbuf, count + 1);
2676 CWARN("%s: failed to set nosquash_nids due to %s rc = %d\n",
2681 EXPORT_SYMBOL(lprocfs_wr_nosquash_nids);
2683 #endif /* CONFIG_PROC_FS*/