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 proc_dir_entry *
63 lprocfs_add_simple(struct proc_dir_entry *root, char *name,
64 void *data, const struct file_operations *fops)
66 struct proc_dir_entry *proc;
69 if (root == NULL || name == NULL || fops == NULL)
70 return ERR_PTR(-EINVAL);
76 proc = proc_create_data(name, mode, root, fops, data);
78 CERROR("LprocFS: No memory to create /proc entry %s\n",
80 return ERR_PTR(-ENOMEM);
84 EXPORT_SYMBOL(lprocfs_add_simple);
86 struct proc_dir_entry *lprocfs_add_symlink(const char *name,
87 struct proc_dir_entry *parent, const char *format, ...)
89 struct proc_dir_entry *entry;
93 if (parent == NULL || format == NULL)
96 OBD_ALLOC_WAIT(dest, MAX_STRING_SIZE + 1);
100 va_start(ap, format);
101 vsnprintf(dest, MAX_STRING_SIZE, format, ap);
104 entry = proc_symlink(name, parent, dest);
106 CERROR("LprocFS: Could not create symbolic link from "
107 "%s to %s\n", name, dest);
109 OBD_FREE(dest, MAX_STRING_SIZE + 1);
112 EXPORT_SYMBOL(lprocfs_add_symlink);
114 static const struct file_operations lprocfs_generic_fops = { };
116 int ldebugfs_add_vars(struct dentry *parent, struct lprocfs_vars *list,
119 if (IS_ERR_OR_NULL(parent) || IS_ERR_OR_NULL(list))
123 struct dentry *entry;
126 if (list->proc_mode != 0000) {
127 mode = list->proc_mode;
128 } else if (list->fops) {
129 if (list->fops->read)
131 if (list->fops->write)
134 entry = debugfs_create_file(list->name, mode, parent,
136 list->fops ? : &lprocfs_generic_fops);
137 if (IS_ERR_OR_NULL(entry))
138 return entry ? PTR_ERR(entry) : -ENOMEM;
143 EXPORT_SYMBOL_GPL(ldebugfs_add_vars);
148 * \param root [in] The parent proc entry on which new entry will be added.
149 * \param list [in] Array of proc entries to be added.
150 * \param data [in] The argument to be passed when entries read/write routines
151 * are called through /proc file.
153 * \retval 0 on success
157 lprocfs_add_vars(struct proc_dir_entry *root, struct lprocfs_vars *list,
160 if (root == NULL || list == NULL)
163 while (list->name != NULL) {
164 struct proc_dir_entry *proc;
167 if (list->proc_mode != 0000) {
168 mode = list->proc_mode;
169 } else if (list->fops) {
170 if (list->fops->read)
172 if (list->fops->write)
175 proc = proc_create_data(list->name, mode, root,
176 list->fops ?: &lprocfs_generic_fops,
184 EXPORT_SYMBOL(lprocfs_add_vars);
186 void ldebugfs_remove(struct dentry **entryp)
188 debugfs_remove_recursive(*entryp);
191 EXPORT_SYMBOL_GPL(ldebugfs_remove);
193 #ifndef HAVE_REMOVE_PROC_SUBTREE
194 /* for b=10866, global variable */
195 DECLARE_RWSEM(_lprocfs_lock);
196 EXPORT_SYMBOL(_lprocfs_lock);
198 static void lprocfs_remove_nolock(struct proc_dir_entry **proot)
200 struct proc_dir_entry *root = *proot;
201 struct proc_dir_entry *temp = root;
202 struct proc_dir_entry *rm_entry;
203 struct proc_dir_entry *parent;
206 if (root == NULL || IS_ERR(root))
209 parent = root->parent;
210 LASSERT(parent != NULL);
213 while (temp->subdir != NULL)
219 /* Memory corruption once caused this to fail, and
220 without this LASSERT we would loop here forever. */
221 LASSERTF(strlen(rm_entry->name) == rm_entry->namelen,
222 "0x%p %s/%s len %d\n", rm_entry, temp->name,
223 rm_entry->name, (int)strlen(rm_entry->name));
225 remove_proc_entry(rm_entry->name, temp);
231 int remove_proc_subtree(const char *name, struct proc_dir_entry *parent)
233 struct proc_dir_entry *t = NULL;
234 struct proc_dir_entry **p;
237 LASSERT(parent != NULL);
240 down_write(&_lprocfs_lock);
241 /* lookup target name */
242 for (p = &parent->subdir; *p; p = &(*p)->next) {
243 if ((*p)->namelen != len)
245 if (memcmp(name, (*p)->name, len))
252 /* verify it's empty: do not count "num_refs" */
253 for (p = &t->subdir; *p; p = &(*p)->next) {
254 if ((*p)->namelen != strlen("num_refs")) {
258 if (memcmp("num_refs", (*p)->name,
259 strlen("num_refs"))) {
267 lprocfs_remove_nolock(&t);
269 up_write(&_lprocfs_lock);
272 #endif /* !HAVE_REMOVE_PROC_SUBTREE */
274 #ifndef HAVE_PROC_REMOVE
275 void proc_remove(struct proc_dir_entry *de)
277 #ifndef HAVE_REMOVE_PROC_SUBTREE
278 down_write(&_lprocfs_lock); /* search vs remove race */
279 lprocfs_remove_nolock(&de);
280 up_write(&_lprocfs_lock);
283 remove_proc_subtree(de->name, de->parent);
288 void lprocfs_remove(struct proc_dir_entry **rooth)
293 EXPORT_SYMBOL(lprocfs_remove);
295 void lprocfs_remove_proc_entry(const char *name, struct proc_dir_entry *parent)
297 LASSERT(parent != NULL);
298 remove_proc_entry(name, parent);
300 EXPORT_SYMBOL(lprocfs_remove_proc_entry);
302 struct dentry *ldebugfs_register(const char *name, struct dentry *parent,
303 struct lprocfs_vars *list, void *data)
305 struct dentry *entry;
307 entry = debugfs_create_dir(name, parent);
308 if (IS_ERR_OR_NULL(entry)) {
309 entry = entry ?: ERR_PTR(-ENOMEM);
313 if (!IS_ERR_OR_NULL(list)) {
316 rc = ldebugfs_add_vars(entry, list, data);
318 debugfs_remove(entry);
325 EXPORT_SYMBOL_GPL(ldebugfs_register);
327 struct proc_dir_entry *
328 lprocfs_register(const char *name, struct proc_dir_entry *parent,
329 struct lprocfs_vars *list, void *data)
331 struct proc_dir_entry *newchild;
333 newchild = proc_mkdir(name, parent);
334 if (newchild == NULL)
335 return ERR_PTR(-ENOMEM);
338 int rc = lprocfs_add_vars(newchild, list, data);
340 lprocfs_remove(&newchild);
346 EXPORT_SYMBOL(lprocfs_register);
348 /* Generic callbacks */
349 int lprocfs_uint_seq_show(struct seq_file *m, void *data)
351 seq_printf(m, "%u\n", *(unsigned int *)data);
354 EXPORT_SYMBOL(lprocfs_uint_seq_show);
356 int lprocfs_wr_uint(struct file *file, const char __user *buffer,
357 unsigned long count, void *data)
360 char dummy[MAX_STRING_SIZE + 1];
364 if (count >= sizeof(dummy))
370 if (copy_from_user(dummy, buffer, count))
375 tmp = simple_strtoul(dummy, &end, 0);
379 *p = (unsigned int)tmp;
382 EXPORT_SYMBOL(lprocfs_wr_uint);
384 ssize_t lprocfs_uint_seq_write(struct file *file, const char __user *buffer,
385 size_t count, loff_t *off)
387 int *data = ((struct seq_file *)file->private_data)->private;
391 rc = lprocfs_str_to_s64(buffer, count, &val);
395 return lprocfs_wr_uint(file, buffer, count, data);
397 EXPORT_SYMBOL(lprocfs_uint_seq_write);
399 int lprocfs_u64_seq_show(struct seq_file *m, void *data)
401 LASSERT(data != NULL);
402 seq_printf(m, "%llu\n", *(__u64 *)data);
405 EXPORT_SYMBOL(lprocfs_u64_seq_show);
407 int lprocfs_atomic_seq_show(struct seq_file *m, void *data)
409 atomic_t *atom = data;
410 LASSERT(atom != NULL);
411 seq_printf(m, "%d\n", atomic_read(atom));
414 EXPORT_SYMBOL(lprocfs_atomic_seq_show);
417 lprocfs_atomic_seq_write(struct file *file, const char __user *buffer,
418 size_t count, loff_t *off)
420 atomic_t *atm = ((struct seq_file *)file->private_data)->private;
424 rc = lprocfs_str_to_s64(buffer, count, &val);
428 if (val <= 0 || val > INT_MAX)
431 atomic_set(atm, val);
434 EXPORT_SYMBOL(lprocfs_atomic_seq_write);
436 int lprocfs_uuid_seq_show(struct seq_file *m, void *data)
438 struct obd_device *obd = data;
440 LASSERT(obd != NULL);
441 seq_printf(m, "%s\n", obd->obd_uuid.uuid);
444 EXPORT_SYMBOL(lprocfs_uuid_seq_show);
446 static ssize_t uuid_show(struct kobject *kobj, struct attribute *attr,
449 struct obd_device *obd = container_of(kobj, struct obd_device,
452 return sprintf(buf, "%s\n", obd->obd_uuid.uuid);
454 LUSTRE_RO_ATTR(uuid);
456 int lprocfs_name_seq_show(struct seq_file *m, void *data)
458 struct obd_device *dev = data;
460 LASSERT(dev != NULL);
461 seq_printf(m, "%s\n", dev->obd_name);
464 EXPORT_SYMBOL(lprocfs_name_seq_show);
466 static ssize_t blocksize_show(struct kobject *kobj, struct attribute *attr,
469 struct obd_device *obd = container_of(kobj, struct obd_device,
471 struct obd_statfs osfs;
474 rc = obd_statfs(NULL, obd->obd_self_export, &osfs,
475 ktime_get_seconds() - OBD_STATFS_CACHE_SECONDS,
478 return sprintf(buf, "%u\n", osfs.os_bsize);
482 LUSTRE_RO_ATTR(blocksize);
484 static ssize_t kbytestotal_show(struct kobject *kobj, struct attribute *attr,
487 struct obd_device *obd = container_of(kobj, struct obd_device,
489 struct obd_statfs osfs;
492 rc = obd_statfs(NULL, obd->obd_self_export, &osfs,
493 ktime_get_seconds() - OBD_STATFS_CACHE_SECONDS,
496 u32 blk_size = osfs.os_bsize >> 10;
497 u64 result = osfs.os_blocks;
499 while (blk_size >>= 1)
502 return sprintf(buf, "%llu\n", result);
507 LUSTRE_RO_ATTR(kbytestotal);
509 static ssize_t kbytesfree_show(struct kobject *kobj, struct attribute *attr,
512 struct obd_device *obd = container_of(kobj, struct obd_device,
514 struct obd_statfs osfs;
517 rc = obd_statfs(NULL, obd->obd_self_export, &osfs,
518 ktime_get_seconds() - OBD_STATFS_CACHE_SECONDS,
521 u32 blk_size = osfs.os_bsize >> 10;
522 u64 result = osfs.os_bfree;
524 while (blk_size >>= 1)
527 return sprintf(buf, "%llu\n", result);
532 LUSTRE_RO_ATTR(kbytesfree);
534 static ssize_t kbytesavail_show(struct kobject *kobj, struct attribute *attr,
537 struct obd_device *obd = container_of(kobj, struct obd_device,
539 struct obd_statfs osfs;
542 rc = obd_statfs(NULL, obd->obd_self_export, &osfs,
543 ktime_get_seconds() - OBD_STATFS_CACHE_SECONDS,
546 u32 blk_size = osfs.os_bsize >> 10;
547 u64 result = osfs.os_bavail;
549 while (blk_size >>= 1)
552 return sprintf(buf, "%llu\n", result);
557 LUSTRE_RO_ATTR(kbytesavail);
559 static ssize_t filestotal_show(struct kobject *kobj, struct attribute *attr,
562 struct obd_device *obd = container_of(kobj, struct obd_device,
564 struct obd_statfs osfs;
567 rc = obd_statfs(NULL, obd->obd_self_export, &osfs,
568 ktime_get_seconds() - OBD_STATFS_CACHE_SECONDS,
571 return sprintf(buf, "%llu\n", osfs.os_files);
575 LUSTRE_RO_ATTR(filestotal);
577 static ssize_t filesfree_show(struct kobject *kobj, struct attribute *attr,
580 struct obd_device *obd = container_of(kobj, struct obd_device,
582 struct obd_statfs osfs;
585 rc = obd_statfs(NULL, obd->obd_self_export, &osfs,
586 ktime_get_seconds() - OBD_STATFS_CACHE_SECONDS,
589 return sprintf(buf, "%llu\n", osfs.os_ffree);
593 LUSTRE_RO_ATTR(filesfree);
595 int lprocfs_server_uuid_seq_show(struct seq_file *m, void *data)
597 struct obd_device *obd = data;
598 struct obd_import *imp;
599 char *imp_state_name = NULL;
602 LASSERT(obd != NULL);
603 LPROCFS_CLIMP_CHECK(obd);
604 imp = obd->u.cli.cl_import;
605 imp_state_name = ptlrpc_import_state_name(imp->imp_state);
606 seq_printf(m, "%s\t%s%s\n", obd2cli_tgt(obd), imp_state_name,
607 imp->imp_deactive ? "\tDEACTIVATED" : "");
609 LPROCFS_CLIMP_EXIT(obd);
612 EXPORT_SYMBOL(lprocfs_server_uuid_seq_show);
614 int lprocfs_conn_uuid_seq_show(struct seq_file *m, void *data)
616 struct obd_device *obd = data;
617 struct ptlrpc_connection *conn;
620 LASSERT(obd != NULL);
622 LPROCFS_CLIMP_CHECK(obd);
623 conn = obd->u.cli.cl_import->imp_connection;
624 if (conn && obd->u.cli.cl_import)
625 seq_printf(m, "%s\n", conn->c_remote_uuid.uuid);
627 seq_printf(m, "%s\n", "<none>");
629 LPROCFS_CLIMP_EXIT(obd);
632 EXPORT_SYMBOL(lprocfs_conn_uuid_seq_show);
634 /** add up per-cpu counters */
637 * Lock statistics structure for access, possibly only on this CPU.
639 * The statistics struct may be allocated with per-CPU structures for
640 * efficient concurrent update (usually only on server-wide stats), or
641 * as a single global struct (e.g. for per-client or per-job statistics),
642 * so the required locking depends on the type of structure allocated.
644 * For per-CPU statistics, pin the thread to the current cpuid so that
645 * will only access the statistics for that CPU. If the stats structure
646 * for the current CPU has not been allocated (or previously freed),
647 * allocate it now. The per-CPU statistics do not need locking since
648 * the thread is pinned to the CPU during update.
650 * For global statistics, lock the stats structure to prevent concurrent update.
652 * \param[in] stats statistics structure to lock
653 * \param[in] opc type of operation:
654 * LPROCFS_GET_SMP_ID: "lock" and return current CPU index
655 * for incrementing statistics for that CPU
656 * LPROCFS_GET_NUM_CPU: "lock" and return number of used
657 * CPU indices to iterate over all indices
658 * \param[out] flags CPU interrupt saved state for IRQ-safe locking
660 * \retval cpuid of current thread or number of allocated structs
661 * \retval negative on error (only for opc LPROCFS_GET_SMP_ID + per-CPU stats)
663 int lprocfs_stats_lock(struct lprocfs_stats *stats,
664 enum lprocfs_stats_lock_ops opc,
665 unsigned long *flags)
667 if (stats->ls_flags & LPROCFS_STATS_FLAG_NOPERCPU) {
668 if (stats->ls_flags & LPROCFS_STATS_FLAG_IRQ_SAFE)
669 spin_lock_irqsave(&stats->ls_lock, *flags);
671 spin_lock(&stats->ls_lock);
672 return opc == LPROCFS_GET_NUM_CPU ? 1 : 0;
676 case LPROCFS_GET_SMP_ID: {
677 unsigned int cpuid = get_cpu();
679 if (unlikely(!stats->ls_percpu[cpuid])) {
680 int rc = lprocfs_stats_alloc_one(stats, cpuid);
689 case LPROCFS_GET_NUM_CPU:
690 return stats->ls_biggest_alloc_num;
697 * Unlock statistics structure after access.
699 * Unlock the lock acquired via lprocfs_stats_lock() for global statistics,
700 * or unpin this thread from the current cpuid for per-CPU statistics.
702 * This function must be called using the same arguments as used when calling
703 * lprocfs_stats_lock() so that the correct operation can be performed.
705 * \param[in] stats statistics structure to unlock
706 * \param[in] opc type of operation (current cpuid or number of structs)
707 * \param[in] flags CPU interrupt saved state for IRQ-safe locking
709 void lprocfs_stats_unlock(struct lprocfs_stats *stats,
710 enum lprocfs_stats_lock_ops opc,
711 unsigned long *flags)
713 if (stats->ls_flags & LPROCFS_STATS_FLAG_NOPERCPU) {
714 if (stats->ls_flags & LPROCFS_STATS_FLAG_IRQ_SAFE)
715 spin_unlock_irqrestore(&stats->ls_lock, *flags);
717 spin_unlock(&stats->ls_lock);
718 } else if (opc == LPROCFS_GET_SMP_ID) {
723 /** add up per-cpu counters */
724 void lprocfs_stats_collect(struct lprocfs_stats *stats, int idx,
725 struct lprocfs_counter *cnt)
727 unsigned int num_entry;
728 struct lprocfs_counter *percpu_cntr;
730 unsigned long flags = 0;
732 memset(cnt, 0, sizeof(*cnt));
735 /* set count to 1 to avoid divide-by-zero errs in callers */
740 cnt->lc_min = LC_MIN_INIT;
742 num_entry = lprocfs_stats_lock(stats, LPROCFS_GET_NUM_CPU, &flags);
744 for (i = 0; i < num_entry; i++) {
745 if (stats->ls_percpu[i] == NULL)
747 percpu_cntr = lprocfs_stats_counter_get(stats, i, idx);
749 cnt->lc_count += percpu_cntr->lc_count;
750 cnt->lc_sum += percpu_cntr->lc_sum;
751 if (percpu_cntr->lc_min < cnt->lc_min)
752 cnt->lc_min = percpu_cntr->lc_min;
753 if (percpu_cntr->lc_max > cnt->lc_max)
754 cnt->lc_max = percpu_cntr->lc_max;
755 cnt->lc_sumsquare += percpu_cntr->lc_sumsquare;
758 lprocfs_stats_unlock(stats, LPROCFS_GET_NUM_CPU, &flags);
762 * Append a space separated list of current set flags to str.
764 #define flag2str(flag) \
766 if (imp->imp_##flag) { \
767 seq_printf(m, "%s" #flag, first ? "" : ", "); \
771 static void obd_import_flags2str(struct obd_import *imp, struct seq_file *m)
775 if (imp->imp_obd->obd_no_recov) {
776 seq_printf(m, "no_recov");
782 flag2str(replayable);
783 flag2str(delayed_recovery);
784 flag2str(vbr_failed);
786 flag2str(resend_replay);
787 flag2str(no_pinger_recover);
788 flag2str(need_mne_swab);
789 flag2str(connect_tried);
793 static const char *obd_connect_names[] = {
812 "remote_client_by_force",
821 "mds_mds_connection",
824 "alt_checksum_algorithm",
865 static void obd_connect_seq_flags2str(struct seq_file *m, __u64 flags,
866 __u64 flags2, const char *sep)
872 for (i = 0, mask = 1; i < 64; i++, mask <<= 1) {
874 seq_printf(m, "%s%s",
875 first ? "" : sep, obd_connect_names[i]);
880 if (flags & ~(mask - 1)) {
881 seq_printf(m, "%sunknown_%#llx",
882 first ? "" : sep, flags & ~(mask - 1));
886 if (!(flags & OBD_CONNECT_FLAGS2) || flags2 == 0)
889 for (i = 64, mask = 1; obd_connect_names[i] != NULL; i++, mask <<= 1) {
891 seq_printf(m, "%s%s",
892 first ? "" : sep, obd_connect_names[i]);
897 if (flags2 & ~(mask - 1)) {
898 seq_printf(m, "%sunknown2_%#llx",
899 first ? "" : sep, flags2 & ~(mask - 1));
904 int obd_connect_flags2str(char *page, int count, __u64 flags, __u64 flags2,
910 for (i = 0, mask = 1; i < 64; i++, mask <<= 1) {
912 ret += snprintf(page + ret, count - ret, "%s%s",
913 ret ? sep : "", obd_connect_names[i]);
916 if (flags & ~(mask - 1))
917 ret += snprintf(page + ret, count - ret,
919 ret ? sep : "", flags & ~(mask - 1));
921 if (!(flags & OBD_CONNECT_FLAGS2) || flags2 == 0)
924 for (i = 64, mask = 1; obd_connect_names[i] != NULL; i++, mask <<= 1) {
926 ret += snprintf(page + ret, count - ret, "%s%s",
927 ret ? sep : "", obd_connect_names[i]);
930 if (flags2 & ~(mask - 1))
931 ret += snprintf(page + ret, count - ret,
933 ret ? sep : "", flags2 & ~(mask - 1));
937 EXPORT_SYMBOL(obd_connect_flags2str);
939 static void obd_connect_data_seqprint(struct seq_file *m,
940 struct obd_connect_data *ocd)
944 LASSERT(ocd != NULL);
945 flags = ocd->ocd_connect_flags;
947 seq_printf(m, " connect_data:\n"
950 ocd->ocd_connect_flags,
952 if (flags & OBD_CONNECT_VERSION)
953 seq_printf(m, " target_version: %u.%u.%u.%u\n",
954 OBD_OCD_VERSION_MAJOR(ocd->ocd_version),
955 OBD_OCD_VERSION_MINOR(ocd->ocd_version),
956 OBD_OCD_VERSION_PATCH(ocd->ocd_version),
957 OBD_OCD_VERSION_FIX(ocd->ocd_version));
958 if (flags & OBD_CONNECT_MDS)
959 seq_printf(m, " mdt_index: %d\n", ocd->ocd_group);
960 if (flags & OBD_CONNECT_GRANT)
961 seq_printf(m, " initial_grant: %d\n", ocd->ocd_grant);
962 if (flags & OBD_CONNECT_INDEX)
963 seq_printf(m, " target_index: %u\n", ocd->ocd_index);
964 if (flags & OBD_CONNECT_BRW_SIZE)
965 seq_printf(m, " max_brw_size: %d\n", ocd->ocd_brw_size);
966 if (flags & OBD_CONNECT_IBITS)
967 seq_printf(m, " ibits_known: %#llx\n",
968 ocd->ocd_ibits_known);
969 if (flags & OBD_CONNECT_GRANT_PARAM)
970 seq_printf(m, " grant_block_size: %d\n"
971 " grant_inode_size: %d\n"
972 " grant_max_extent_size: %d\n"
973 " grant_extent_tax: %d\n",
974 1 << ocd->ocd_grant_blkbits,
975 1 << ocd->ocd_grant_inobits,
976 ocd->ocd_grant_max_blks << ocd->ocd_grant_blkbits,
977 ocd->ocd_grant_tax_kb << 10);
978 if (flags & OBD_CONNECT_TRANSNO)
979 seq_printf(m, " first_transno: %#llx\n",
981 if (flags & OBD_CONNECT_CKSUM)
982 seq_printf(m, " cksum_types: %#x\n",
983 ocd->ocd_cksum_types);
984 if (flags & OBD_CONNECT_MAX_EASIZE)
985 seq_printf(m, " max_easize: %d\n", ocd->ocd_max_easize);
986 if (flags & OBD_CONNECT_MAXBYTES)
987 seq_printf(m, " max_object_bytes: %llu\n",
989 if (flags & OBD_CONNECT_MULTIMODRPCS)
990 seq_printf(m, " max_mod_rpcs: %hu\n",
991 ocd->ocd_maxmodrpcs);
994 int lprocfs_import_seq_show(struct seq_file *m, void *data)
996 char nidstr[LNET_NIDSTR_SIZE];
997 struct lprocfs_counter ret;
998 struct lprocfs_counter_header *header;
999 struct obd_device *obd = (struct obd_device *)data;
1000 struct obd_import *imp;
1001 struct obd_import_conn *conn;
1002 struct obd_connect_data *ocd;
1007 LASSERT(obd != NULL);
1008 LPROCFS_CLIMP_CHECK(obd);
1009 imp = obd->u.cli.cl_import;
1010 ocd = &imp->imp_connect_data;
1012 seq_printf(m, "import:\n"
1016 " connect_flags: [ ",
1019 ptlrpc_import_state_name(imp->imp_state));
1020 obd_connect_seq_flags2str(m, imp->imp_connect_data.ocd_connect_flags,
1021 imp->imp_connect_data.ocd_connect_flags2,
1023 seq_printf(m, " ]\n");
1024 obd_connect_data_seqprint(m, ocd);
1025 seq_printf(m, " import_flags: [ ");
1026 obd_import_flags2str(imp, m);
1028 seq_printf(m, " ]\n"
1030 " failover_nids: [ ");
1031 spin_lock(&imp->imp_lock);
1033 list_for_each_entry(conn, &imp->imp_conn_list, oic_item) {
1034 libcfs_nid2str_r(conn->oic_conn->c_peer.nid,
1035 nidstr, sizeof(nidstr));
1036 seq_printf(m, "%s%s", j ? ", " : "", nidstr);
1039 if (imp->imp_connection != NULL)
1040 libcfs_nid2str_r(imp->imp_connection->c_peer.nid,
1041 nidstr, sizeof(nidstr));
1043 strncpy(nidstr, "<none>", sizeof(nidstr));
1044 seq_printf(m, " ]\n"
1045 " current_connection: %s\n"
1046 " connection_attempts: %u\n"
1048 " in-progress_invalidations: %u\n",
1051 imp->imp_generation,
1052 atomic_read(&imp->imp_inval_count));
1053 spin_unlock(&imp->imp_lock);
1055 if (obd->obd_svc_stats == NULL)
1058 header = &obd->obd_svc_stats->ls_cnt_header[PTLRPC_REQWAIT_CNTR];
1059 lprocfs_stats_collect(obd->obd_svc_stats, PTLRPC_REQWAIT_CNTR, &ret);
1060 if (ret.lc_count != 0) {
1061 /* first argument to do_div MUST be __u64 */
1062 __u64 sum = ret.lc_sum;
1063 do_div(sum, ret.lc_count);
1067 seq_printf(m, " rpcs:\n"
1069 " unregistering: %u\n"
1071 " avg_waittime: %llu %s\n",
1072 atomic_read(&imp->imp_inflight),
1073 atomic_read(&imp->imp_unregistering),
1074 atomic_read(&imp->imp_timeouts),
1075 ret.lc_sum, header->lc_units);
1078 for(j = 0; j < IMP_AT_MAX_PORTALS; j++) {
1079 if (imp->imp_at.iat_portal[j] == 0)
1081 k = max_t(unsigned int, k,
1082 at_get(&imp->imp_at.iat_service_estimate[j]));
1084 seq_printf(m, " service_estimates:\n"
1085 " services: %u sec\n"
1086 " network: %u sec\n",
1088 at_get(&imp->imp_at.iat_net_latency));
1090 seq_printf(m, " transactions:\n"
1091 " last_replay: %llu\n"
1092 " peer_committed: %llu\n"
1093 " last_checked: %llu\n",
1094 imp->imp_last_replay_transno,
1095 imp->imp_peer_committed_transno,
1096 imp->imp_last_transno_checked);
1098 /* avg data rates */
1099 for (rw = 0; rw <= 1; rw++) {
1100 lprocfs_stats_collect(obd->obd_svc_stats,
1101 PTLRPC_LAST_CNTR + BRW_READ_BYTES + rw,
1103 if (ret.lc_sum > 0 && ret.lc_count > 0) {
1104 /* first argument to do_div MUST be __u64 */
1105 __u64 sum = ret.lc_sum;
1106 do_div(sum, ret.lc_count);
1108 seq_printf(m, " %s_data_averages:\n"
1109 " bytes_per_rpc: %llu\n",
1110 rw ? "write" : "read",
1113 k = (int)ret.lc_sum;
1114 j = opcode_offset(OST_READ + rw) + EXTRA_MAX_OPCODES;
1115 header = &obd->obd_svc_stats->ls_cnt_header[j];
1116 lprocfs_stats_collect(obd->obd_svc_stats, j, &ret);
1117 if (ret.lc_sum > 0 && ret.lc_count != 0) {
1118 /* first argument to do_div MUST be __u64 */
1119 __u64 sum = ret.lc_sum;
1120 do_div(sum, ret.lc_count);
1122 seq_printf(m, " %s_per_rpc: %llu\n",
1123 header->lc_units, ret.lc_sum);
1124 j = (int)ret.lc_sum;
1126 seq_printf(m, " MB_per_sec: %u.%.02u\n",
1127 k / j, (100 * k / j) % 100);
1132 LPROCFS_CLIMP_EXIT(obd);
1135 EXPORT_SYMBOL(lprocfs_import_seq_show);
1137 int lprocfs_state_seq_show(struct seq_file *m, void *data)
1139 struct obd_device *obd = (struct obd_device *)data;
1140 struct obd_import *imp;
1143 LASSERT(obd != NULL);
1144 LPROCFS_CLIMP_CHECK(obd);
1145 imp = obd->u.cli.cl_import;
1147 seq_printf(m, "current_state: %s\n",
1148 ptlrpc_import_state_name(imp->imp_state));
1149 seq_printf(m, "state_history:\n");
1150 k = imp->imp_state_hist_idx;
1151 for (j = 0; j < IMP_STATE_HIST_LEN; j++) {
1152 struct import_state_hist *ish =
1153 &imp->imp_state_hist[(k + j) % IMP_STATE_HIST_LEN];
1154 if (ish->ish_state == 0)
1156 seq_printf(m, " - [ %lld, %s ]\n", (s64)ish->ish_time,
1157 ptlrpc_import_state_name(ish->ish_state));
1160 LPROCFS_CLIMP_EXIT(obd);
1163 EXPORT_SYMBOL(lprocfs_state_seq_show);
1165 int lprocfs_at_hist_helper(struct seq_file *m, struct adaptive_timeout *at)
1168 for (i = 0; i < AT_BINS; i++)
1169 seq_printf(m, "%3u ", at->at_hist[i]);
1170 seq_printf(m, "\n");
1173 EXPORT_SYMBOL(lprocfs_at_hist_helper);
1175 /* See also ptlrpc_lprocfs_timeouts_show_seq */
1176 int lprocfs_timeouts_seq_show(struct seq_file *m, void *data)
1178 struct obd_device *obd = (struct obd_device *)data;
1179 struct obd_import *imp;
1180 unsigned int cur, worst;
1181 time64_t now, worstt;
1184 LASSERT(obd != NULL);
1185 LPROCFS_CLIMP_CHECK(obd);
1186 imp = obd->u.cli.cl_import;
1188 now = ktime_get_real_seconds();
1190 /* Some network health info for kicks */
1191 seq_printf(m, "%-10s : %lld, %llds ago\n",
1192 "last reply", (s64)imp->imp_last_reply_time,
1193 (s64)(now - imp->imp_last_reply_time));
1195 cur = at_get(&imp->imp_at.iat_net_latency);
1196 worst = imp->imp_at.iat_net_latency.at_worst_ever;
1197 worstt = imp->imp_at.iat_net_latency.at_worst_time;
1198 seq_printf(m, "%-10s : cur %3u worst %3u (at %lld, %llds ago) ",
1199 "network", cur, worst, (s64)worstt, (s64)(now - worstt));
1200 lprocfs_at_hist_helper(m, &imp->imp_at.iat_net_latency);
1202 for(i = 0; i < IMP_AT_MAX_PORTALS; i++) {
1203 if (imp->imp_at.iat_portal[i] == 0)
1205 cur = at_get(&imp->imp_at.iat_service_estimate[i]);
1206 worst = imp->imp_at.iat_service_estimate[i].at_worst_ever;
1207 worstt = imp->imp_at.iat_service_estimate[i].at_worst_time;
1208 seq_printf(m, "portal %-2d : cur %3u worst %3u (at %lld, %llds ago) ",
1209 imp->imp_at.iat_portal[i], cur, worst, (s64)worstt,
1210 (s64)(now - worstt));
1211 lprocfs_at_hist_helper(m, &imp->imp_at.iat_service_estimate[i]);
1214 LPROCFS_CLIMP_EXIT(obd);
1217 EXPORT_SYMBOL(lprocfs_timeouts_seq_show);
1219 int lprocfs_connect_flags_seq_show(struct seq_file *m, void *data)
1221 struct obd_device *obd = data;
1225 LPROCFS_CLIMP_CHECK(obd);
1226 flags = obd->u.cli.cl_import->imp_connect_data.ocd_connect_flags;
1227 flags2 = obd->u.cli.cl_import->imp_connect_data.ocd_connect_flags2;
1228 seq_printf(m, "flags=%#llx\n", flags);
1229 seq_printf(m, "flags2=%#llx\n", flags2);
1230 obd_connect_seq_flags2str(m, flags, flags2, "\n");
1231 seq_printf(m, "\n");
1232 LPROCFS_CLIMP_EXIT(obd);
1235 EXPORT_SYMBOL(lprocfs_connect_flags_seq_show);
1237 static struct attribute *obd_def_uuid_attrs[] = {
1238 &lustre_attr_uuid.attr,
1242 static struct attribute *obd_def_attrs[] = {
1243 &lustre_attr_blocksize.attr,
1244 &lustre_attr_kbytestotal.attr,
1245 &lustre_attr_kbytesfree.attr,
1246 &lustre_attr_kbytesavail.attr,
1247 &lustre_attr_filestotal.attr,
1248 &lustre_attr_filesfree.attr,
1249 &lustre_attr_uuid.attr,
1253 static void obd_sysfs_release(struct kobject *kobj)
1255 struct obd_device *obd = container_of(kobj, struct obd_device,
1258 complete(&obd->obd_kobj_unregister);
1261 int lprocfs_obd_setup(struct obd_device *obd, bool uuid_only)
1265 if (!obd || obd->obd_magic != OBD_DEVICE_MAGIC)
1268 rc = kobject_set_name(&obd->obd_kset.kobj, "%s", obd->obd_name);
1272 obd->obd_ktype.sysfs_ops = &lustre_sysfs_ops;
1273 obd->obd_ktype.release = obd_sysfs_release;
1275 obd->obd_ktype.default_attrs = obd->obd_attrs;
1277 obd->obd_kset.kobj.parent = &obd->obd_type->typ_kobj;
1278 obd->obd_kset.kobj.ktype = &obd->obd_ktype;
1279 init_completion(&obd->obd_kobj_unregister);
1280 rc = kset_register(&obd->obd_kset);
1285 obd->obd_attrs_group.attrs = obd_def_uuid_attrs;
1287 obd->obd_attrs_group.attrs = obd_def_attrs;
1289 rc = sysfs_create_group(&obd->obd_kset.kobj, &obd->obd_attrs_group);
1291 kset_unregister(&obd->obd_kset);
1295 if (obd->obd_proc_entry)
1296 GOTO(already_registered, rc);
1298 LASSERT(obd->obd_type->typ_procroot != NULL);
1300 obd->obd_proc_entry = lprocfs_register(obd->obd_name,
1301 obd->obd_type->typ_procroot,
1302 obd->obd_vars, obd);
1303 if (IS_ERR(obd->obd_proc_entry)) {
1304 rc = PTR_ERR(obd->obd_proc_entry);
1305 CERROR("error %d setting up lprocfs for %s\n",rc,obd->obd_name);
1306 obd->obd_proc_entry = NULL;
1307 lprocfs_obd_cleanup(obd);
1312 EXPORT_SYMBOL(lprocfs_obd_setup);
1314 int lprocfs_obd_cleanup(struct obd_device *obd)
1319 if (obd->obd_proc_exports_entry) {
1320 /* Should be no exports left */
1321 lprocfs_remove(&obd->obd_proc_exports_entry);
1322 obd->obd_proc_exports_entry = NULL;
1325 if (obd->obd_proc_entry) {
1326 lprocfs_remove(&obd->obd_proc_entry);
1327 obd->obd_proc_entry = NULL;
1330 sysfs_remove_group(&obd->obd_kset.kobj, &obd->obd_attrs_group);
1331 kset_unregister(&obd->obd_kset);
1332 wait_for_completion(&obd->obd_kobj_unregister);
1336 EXPORT_SYMBOL(lprocfs_obd_cleanup);
1338 int lprocfs_stats_alloc_one(struct lprocfs_stats *stats, unsigned int cpuid)
1340 struct lprocfs_counter *cntr;
1341 unsigned int percpusize;
1343 unsigned long flags = 0;
1346 LASSERT(stats->ls_percpu[cpuid] == NULL);
1347 LASSERT((stats->ls_flags & LPROCFS_STATS_FLAG_NOPERCPU) == 0);
1349 percpusize = lprocfs_stats_counter_size(stats);
1350 LIBCFS_ALLOC_ATOMIC(stats->ls_percpu[cpuid], percpusize);
1351 if (stats->ls_percpu[cpuid] != NULL) {
1353 if (unlikely(stats->ls_biggest_alloc_num <= cpuid)) {
1354 if (stats->ls_flags & LPROCFS_STATS_FLAG_IRQ_SAFE)
1355 spin_lock_irqsave(&stats->ls_lock, flags);
1357 spin_lock(&stats->ls_lock);
1358 if (stats->ls_biggest_alloc_num <= cpuid)
1359 stats->ls_biggest_alloc_num = cpuid + 1;
1360 if (stats->ls_flags & LPROCFS_STATS_FLAG_IRQ_SAFE) {
1361 spin_unlock_irqrestore(&stats->ls_lock, flags);
1363 spin_unlock(&stats->ls_lock);
1366 /* initialize the ls_percpu[cpuid] non-zero counter */
1367 for (i = 0; i < stats->ls_num; ++i) {
1368 cntr = lprocfs_stats_counter_get(stats, cpuid, i);
1369 cntr->lc_min = LC_MIN_INIT;
1375 struct lprocfs_stats *lprocfs_alloc_stats(unsigned int num,
1376 enum lprocfs_stats_flags flags)
1378 struct lprocfs_stats *stats;
1379 unsigned int num_entry;
1380 unsigned int percpusize = 0;
1386 if (lprocfs_no_percpu_stats != 0)
1387 flags |= LPROCFS_STATS_FLAG_NOPERCPU;
1389 if (flags & LPROCFS_STATS_FLAG_NOPERCPU)
1392 num_entry = num_possible_cpus();
1394 /* alloc percpu pointers for all possible cpu slots */
1395 LIBCFS_ALLOC(stats, offsetof(typeof(*stats), ls_percpu[num_entry]));
1399 stats->ls_num = num;
1400 stats->ls_flags = flags;
1401 spin_lock_init(&stats->ls_lock);
1403 /* alloc num of counter headers */
1404 LIBCFS_ALLOC(stats->ls_cnt_header,
1405 stats->ls_num * sizeof(struct lprocfs_counter_header));
1406 if (stats->ls_cnt_header == NULL)
1409 if ((flags & LPROCFS_STATS_FLAG_NOPERCPU) != 0) {
1410 /* contains only one set counters */
1411 percpusize = lprocfs_stats_counter_size(stats);
1412 LIBCFS_ALLOC_ATOMIC(stats->ls_percpu[0], percpusize);
1413 if (stats->ls_percpu[0] == NULL)
1415 stats->ls_biggest_alloc_num = 1;
1416 } else if ((flags & LPROCFS_STATS_FLAG_IRQ_SAFE) != 0) {
1417 /* alloc all percpu data, currently only obd_memory use this */
1418 for (i = 0; i < num_entry; ++i)
1419 if (lprocfs_stats_alloc_one(stats, i) < 0)
1426 lprocfs_free_stats(&stats);
1429 EXPORT_SYMBOL(lprocfs_alloc_stats);
1431 void lprocfs_free_stats(struct lprocfs_stats **statsh)
1433 struct lprocfs_stats *stats = *statsh;
1434 unsigned int num_entry;
1435 unsigned int percpusize;
1438 if (stats == NULL || stats->ls_num == 0)
1442 if (stats->ls_flags & LPROCFS_STATS_FLAG_NOPERCPU)
1445 num_entry = num_possible_cpus();
1447 percpusize = lprocfs_stats_counter_size(stats);
1448 for (i = 0; i < num_entry; i++)
1449 if (stats->ls_percpu[i] != NULL)
1450 LIBCFS_FREE(stats->ls_percpu[i], percpusize);
1451 if (stats->ls_cnt_header != NULL)
1452 LIBCFS_FREE(stats->ls_cnt_header, stats->ls_num *
1453 sizeof(struct lprocfs_counter_header));
1454 LIBCFS_FREE(stats, offsetof(typeof(*stats), ls_percpu[num_entry]));
1456 EXPORT_SYMBOL(lprocfs_free_stats);
1458 u64 lprocfs_stats_collector(struct lprocfs_stats *stats, int idx,
1459 enum lprocfs_fields_flags field)
1461 unsigned long flags = 0;
1462 unsigned int num_cpu;
1468 num_cpu = lprocfs_stats_lock(stats, LPROCFS_GET_NUM_CPU, &flags);
1469 for (i = 0; i < num_cpu; i++) {
1470 struct lprocfs_counter *cntr;
1472 if (!stats->ls_percpu[i])
1475 cntr = lprocfs_stats_counter_get(stats, i, idx);
1476 ret += lprocfs_read_helper(cntr, &stats->ls_cnt_header[idx],
1477 stats->ls_flags, field);
1479 lprocfs_stats_unlock(stats, LPROCFS_GET_NUM_CPU, &flags);
1482 EXPORT_SYMBOL(lprocfs_stats_collector);
1484 void lprocfs_clear_stats(struct lprocfs_stats *stats)
1486 struct lprocfs_counter *percpu_cntr;
1489 unsigned int num_entry;
1490 unsigned long flags = 0;
1492 num_entry = lprocfs_stats_lock(stats, LPROCFS_GET_NUM_CPU, &flags);
1494 for (i = 0; i < num_entry; i++) {
1495 if (stats->ls_percpu[i] == NULL)
1497 for (j = 0; j < stats->ls_num; j++) {
1498 percpu_cntr = lprocfs_stats_counter_get(stats, i, j);
1499 percpu_cntr->lc_count = 0;
1500 percpu_cntr->lc_min = LC_MIN_INIT;
1501 percpu_cntr->lc_max = 0;
1502 percpu_cntr->lc_sumsquare = 0;
1503 percpu_cntr->lc_sum = 0;
1504 if (stats->ls_flags & LPROCFS_STATS_FLAG_IRQ_SAFE)
1505 percpu_cntr->lc_sum_irq = 0;
1509 lprocfs_stats_unlock(stats, LPROCFS_GET_NUM_CPU, &flags);
1511 EXPORT_SYMBOL(lprocfs_clear_stats);
1513 static ssize_t lprocfs_stats_seq_write(struct file *file,
1514 const char __user *buf,
1515 size_t len, loff_t *off)
1517 struct seq_file *seq = file->private_data;
1518 struct lprocfs_stats *stats = seq->private;
1520 lprocfs_clear_stats(stats);
1525 static void *lprocfs_stats_seq_start(struct seq_file *p, loff_t *pos)
1527 struct lprocfs_stats *stats = p->private;
1529 return (*pos < stats->ls_num) ? pos : NULL;
1532 static void lprocfs_stats_seq_stop(struct seq_file *p, void *v)
1536 static void *lprocfs_stats_seq_next(struct seq_file *p, void *v, loff_t *pos)
1540 return lprocfs_stats_seq_start(p, pos);
1543 /* seq file export of one lprocfs counter */
1544 static int lprocfs_stats_seq_show(struct seq_file *p, void *v)
1546 struct lprocfs_stats *stats = p->private;
1547 struct lprocfs_counter_header *hdr;
1548 struct lprocfs_counter ctr;
1549 int idx = *(loff_t *)v;
1552 struct timespec64 now;
1554 ktime_get_real_ts64(&now);
1555 seq_printf(p, "%-25s %llu.%09lu secs.nsecs\n",
1556 "snapshot_time", (s64)now.tv_sec, now.tv_nsec);
1559 hdr = &stats->ls_cnt_header[idx];
1560 lprocfs_stats_collect(stats, idx, &ctr);
1562 if (ctr.lc_count == 0)
1565 seq_printf(p, "%-25s %lld samples [%s]", hdr->lc_name,
1566 ctr.lc_count, hdr->lc_units);
1568 if ((hdr->lc_config & LPROCFS_CNTR_AVGMINMAX) && ctr.lc_count > 0) {
1569 seq_printf(p, " %lld %lld %lld",
1570 ctr.lc_min, ctr.lc_max, ctr.lc_sum);
1571 if (hdr->lc_config & LPROCFS_CNTR_STDDEV)
1572 seq_printf(p, " %llu", ctr.lc_sumsquare);
1578 static const struct seq_operations lprocfs_stats_seq_sops = {
1579 .start = lprocfs_stats_seq_start,
1580 .stop = lprocfs_stats_seq_stop,
1581 .next = lprocfs_stats_seq_next,
1582 .show = lprocfs_stats_seq_show,
1585 static int lprocfs_stats_seq_open(struct inode *inode, struct file *file)
1587 struct seq_file *seq;
1590 rc = LPROCFS_ENTRY_CHECK(inode);
1594 rc = seq_open(file, &lprocfs_stats_seq_sops);
1597 seq = file->private_data;
1598 seq->private = inode->i_private ? : PDE_DATA(inode);
1602 static const struct file_operations lprocfs_stats_seq_fops = {
1603 .owner = THIS_MODULE,
1604 .open = lprocfs_stats_seq_open,
1606 .write = lprocfs_stats_seq_write,
1607 .llseek = seq_lseek,
1608 .release = lprocfs_seq_release,
1611 int ldebugfs_register_stats(struct dentry *parent, const char *name,
1612 struct lprocfs_stats *stats)
1614 struct dentry *entry;
1616 LASSERT(!IS_ERR_OR_NULL(parent));
1618 entry = debugfs_create_file(name, 0644, parent, stats,
1619 &lprocfs_stats_seq_fops);
1620 if (IS_ERR_OR_NULL(entry))
1621 return entry ? PTR_ERR(entry) : -ENOMEM;
1625 EXPORT_SYMBOL_GPL(ldebugfs_register_stats);
1627 int lprocfs_register_stats(struct proc_dir_entry *root, const char *name,
1628 struct lprocfs_stats *stats)
1630 struct proc_dir_entry *entry;
1631 LASSERT(root != NULL);
1633 entry = proc_create_data(name, 0644, root,
1634 &lprocfs_stats_seq_fops, stats);
1639 EXPORT_SYMBOL(lprocfs_register_stats);
1641 void lprocfs_counter_init(struct lprocfs_stats *stats, int index,
1642 unsigned conf, const char *name, const char *units)
1644 struct lprocfs_counter_header *header;
1645 struct lprocfs_counter *percpu_cntr;
1646 unsigned long flags = 0;
1648 unsigned int num_cpu;
1650 LASSERT(stats != NULL);
1652 header = &stats->ls_cnt_header[index];
1653 LASSERTF(header != NULL, "Failed to allocate stats header:[%d]%s/%s\n",
1654 index, name, units);
1656 header->lc_config = conf;
1657 header->lc_name = name;
1658 header->lc_units = units;
1660 num_cpu = lprocfs_stats_lock(stats, LPROCFS_GET_NUM_CPU, &flags);
1661 for (i = 0; i < num_cpu; ++i) {
1662 if (stats->ls_percpu[i] == NULL)
1664 percpu_cntr = lprocfs_stats_counter_get(stats, i, index);
1665 percpu_cntr->lc_count = 0;
1666 percpu_cntr->lc_min = LC_MIN_INIT;
1667 percpu_cntr->lc_max = 0;
1668 percpu_cntr->lc_sumsquare = 0;
1669 percpu_cntr->lc_sum = 0;
1670 if ((stats->ls_flags & LPROCFS_STATS_FLAG_IRQ_SAFE) != 0)
1671 percpu_cntr->lc_sum_irq = 0;
1673 lprocfs_stats_unlock(stats, LPROCFS_GET_NUM_CPU, &flags);
1675 EXPORT_SYMBOL(lprocfs_counter_init);
1677 /* Note that we only init md counters for ops whose offset is less
1678 * than NUM_MD_STATS. This is explained in a comment in the definition
1679 * of struct md_ops. */
1680 #define LPROCFS_MD_OP_INIT(base, stats, op) \
1682 unsigned int _idx = base + MD_COUNTER_OFFSET(op); \
1684 if (MD_COUNTER_OFFSET(op) < NUM_MD_STATS) { \
1685 LASSERT(_idx < stats->ls_num); \
1686 lprocfs_counter_init(stats, _idx, 0, #op, "reqs"); \
1690 void lprocfs_init_mps_stats(int num_private_stats, struct lprocfs_stats *stats)
1692 LPROCFS_MD_OP_INIT(num_private_stats, stats, get_root);
1693 LPROCFS_MD_OP_INIT(num_private_stats, stats, null_inode);
1694 LPROCFS_MD_OP_INIT(num_private_stats, stats, close);
1695 LPROCFS_MD_OP_INIT(num_private_stats, stats, create);
1696 LPROCFS_MD_OP_INIT(num_private_stats, stats, enqueue);
1697 LPROCFS_MD_OP_INIT(num_private_stats, stats, getattr);
1698 LPROCFS_MD_OP_INIT(num_private_stats, stats, getattr_name);
1699 LPROCFS_MD_OP_INIT(num_private_stats, stats, intent_lock);
1700 LPROCFS_MD_OP_INIT(num_private_stats, stats, link);
1701 LPROCFS_MD_OP_INIT(num_private_stats, stats, rename);
1702 LPROCFS_MD_OP_INIT(num_private_stats, stats, setattr);
1703 LPROCFS_MD_OP_INIT(num_private_stats, stats, fsync);
1704 LPROCFS_MD_OP_INIT(num_private_stats, stats, read_page);
1705 LPROCFS_MD_OP_INIT(num_private_stats, stats, unlink);
1706 LPROCFS_MD_OP_INIT(num_private_stats, stats, setxattr);
1707 LPROCFS_MD_OP_INIT(num_private_stats, stats, getxattr);
1708 LPROCFS_MD_OP_INIT(num_private_stats, stats, init_ea_size);
1709 LPROCFS_MD_OP_INIT(num_private_stats, stats, get_lustre_md);
1710 LPROCFS_MD_OP_INIT(num_private_stats, stats, free_lustre_md);
1711 LPROCFS_MD_OP_INIT(num_private_stats, stats, merge_attr);
1712 LPROCFS_MD_OP_INIT(num_private_stats, stats, set_open_replay_data);
1713 LPROCFS_MD_OP_INIT(num_private_stats, stats, clear_open_replay_data);
1714 LPROCFS_MD_OP_INIT(num_private_stats, stats, set_lock_data);
1715 LPROCFS_MD_OP_INIT(num_private_stats, stats, lock_match);
1716 LPROCFS_MD_OP_INIT(num_private_stats, stats, cancel_unused);
1717 LPROCFS_MD_OP_INIT(num_private_stats, stats, intent_getattr_async);
1718 LPROCFS_MD_OP_INIT(num_private_stats, stats, revalidate_lock);
1721 int lprocfs_alloc_md_stats(struct obd_device *obd,
1722 unsigned int num_private_stats)
1724 struct lprocfs_stats *stats;
1725 unsigned int num_stats;
1728 CLASSERT(offsetof(struct md_ops, MD_STATS_FIRST_OP) == 0);
1729 CLASSERT(_MD_COUNTER_OFFSET(MD_STATS_FIRST_OP) == 0);
1730 CLASSERT(_MD_COUNTER_OFFSET(MD_STATS_LAST_OP) > 0);
1732 /* TODO Ensure that this function is only used where
1733 * appropriate by adding an assertion to the effect that
1734 * obd->obd_type->typ_md_ops is not NULL. We can't do this now
1735 * because mdt_procfs_init() uses this function to allocate
1736 * the stats backing /proc/fs/lustre/mdt/.../md_stats but the
1737 * mdt layer does not use the md_ops interface. This is
1738 * confusing and a waste of memory. See LU-2484.
1740 LASSERT(obd->obd_proc_entry != NULL);
1741 LASSERT(obd->obd_md_stats == NULL);
1742 LASSERT(obd->obd_md_cntr_base == 0);
1744 num_stats = NUM_MD_STATS + num_private_stats;
1745 stats = lprocfs_alloc_stats(num_stats, 0);
1749 lprocfs_init_mps_stats(num_private_stats, stats);
1751 for (i = num_private_stats; i < num_stats; i++) {
1752 if (stats->ls_cnt_header[i].lc_name == NULL) {
1753 CERROR("Missing md_stat initializer md_op "
1754 "operation at offset %d. Aborting.\n",
1755 i - num_private_stats);
1760 rc = lprocfs_register_stats(obd->obd_proc_entry, "md_stats", stats);
1762 lprocfs_free_stats(&stats);
1764 obd->obd_md_stats = stats;
1765 obd->obd_md_cntr_base = num_private_stats;
1770 EXPORT_SYMBOL(lprocfs_alloc_md_stats);
1772 void lprocfs_free_md_stats(struct obd_device *obd)
1774 struct lprocfs_stats *stats = obd->obd_md_stats;
1776 if (stats != NULL) {
1777 obd->obd_md_stats = NULL;
1778 obd->obd_md_cntr_base = 0;
1779 lprocfs_free_stats(&stats);
1782 EXPORT_SYMBOL(lprocfs_free_md_stats);
1784 void lprocfs_init_ldlm_stats(struct lprocfs_stats *ldlm_stats)
1786 lprocfs_counter_init(ldlm_stats,
1787 LDLM_ENQUEUE - LDLM_FIRST_OPC,
1788 0, "ldlm_enqueue", "reqs");
1789 lprocfs_counter_init(ldlm_stats,
1790 LDLM_CONVERT - LDLM_FIRST_OPC,
1791 0, "ldlm_convert", "reqs");
1792 lprocfs_counter_init(ldlm_stats,
1793 LDLM_CANCEL - LDLM_FIRST_OPC,
1794 0, "ldlm_cancel", "reqs");
1795 lprocfs_counter_init(ldlm_stats,
1796 LDLM_BL_CALLBACK - LDLM_FIRST_OPC,
1797 0, "ldlm_bl_callback", "reqs");
1798 lprocfs_counter_init(ldlm_stats,
1799 LDLM_CP_CALLBACK - LDLM_FIRST_OPC,
1800 0, "ldlm_cp_callback", "reqs");
1801 lprocfs_counter_init(ldlm_stats,
1802 LDLM_GL_CALLBACK - LDLM_FIRST_OPC,
1803 0, "ldlm_gl_callback", "reqs");
1805 EXPORT_SYMBOL(lprocfs_init_ldlm_stats);
1807 __s64 lprocfs_read_helper(struct lprocfs_counter *lc,
1808 struct lprocfs_counter_header *header,
1809 enum lprocfs_stats_flags flags,
1810 enum lprocfs_fields_flags field)
1814 if (lc == NULL || header == NULL)
1818 case LPROCFS_FIELDS_FLAGS_CONFIG:
1819 ret = header->lc_config;
1821 case LPROCFS_FIELDS_FLAGS_SUM:
1823 if ((flags & LPROCFS_STATS_FLAG_IRQ_SAFE) != 0)
1824 ret += lc->lc_sum_irq;
1826 case LPROCFS_FIELDS_FLAGS_MIN:
1829 case LPROCFS_FIELDS_FLAGS_MAX:
1832 case LPROCFS_FIELDS_FLAGS_AVG:
1833 ret = (lc->lc_max - lc->lc_min) / 2;
1835 case LPROCFS_FIELDS_FLAGS_SUMSQUARE:
1836 ret = lc->lc_sumsquare;
1838 case LPROCFS_FIELDS_FLAGS_COUNT:
1846 EXPORT_SYMBOL(lprocfs_read_helper);
1848 int lprocfs_read_frac_helper(char *buffer, unsigned long count, long val,
1851 long decimal_val, frac_val;
1857 decimal_val = val / mult;
1858 prtn = snprintf(buffer, count, "%ld", decimal_val);
1859 frac_val = val % mult;
1861 if (prtn < (count - 4) && frac_val > 0) {
1863 int i, temp_mult = 1, frac_bits = 0;
1865 temp_frac = frac_val * 10;
1866 buffer[prtn++] = '.';
1867 while (frac_bits < 2 && (temp_frac / mult) < 1 ) {
1868 /* only reserved 2 bits fraction */
1869 buffer[prtn++] ='0';
1874 * Need to think these cases :
1875 * 1. #echo x.00 > /proc/xxx output result : x
1876 * 2. #echo x.0x > /proc/xxx output result : x.0x
1877 * 3. #echo x.x0 > /proc/xxx output result : x.x
1878 * 4. #echo x.xx > /proc/xxx output result : x.xx
1879 * Only reserved 2 bits fraction.
1881 for (i = 0; i < (5 - prtn); i++)
1884 frac_bits = min((int)count - prtn, 3 - frac_bits);
1885 prtn += snprintf(buffer + prtn, frac_bits, "%ld",
1886 frac_val * temp_mult / mult);
1889 while(buffer[prtn] < '1' || buffer[prtn] > '9') {
1891 if (buffer[prtn] == '.') {
1898 buffer[prtn++] ='\n';
1901 EXPORT_SYMBOL(lprocfs_read_frac_helper);
1903 int lprocfs_seq_read_frac_helper(struct seq_file *m, long val, int mult)
1905 long decimal_val, frac_val;
1907 decimal_val = val / mult;
1908 seq_printf(m, "%ld", decimal_val);
1909 frac_val = val % mult;
1916 /* Three cases: x0, xx, 0x */
1917 if ((frac_val % 10) != 0)
1918 seq_printf(m, ".%ld", frac_val);
1920 seq_printf(m, ".%ld", frac_val / 10);
1923 seq_printf(m, "\n");
1926 EXPORT_SYMBOL(lprocfs_seq_read_frac_helper);
1928 /* Obtains the conversion factor for the unit specified */
1929 static int get_mult(char unit, __u64 *mult)
1934 /* peta, tera, giga, mega, and kilo */
1951 /* some tests expect % to be accepted */
1965 * Ensures the numeric string is valid. The function provides the final
1966 * multiplier in the case a unit exists at the end of the string. It also
1967 * locates the start of the whole and fractional parts (if any). This
1968 * function modifies the string so kstrtoull can be used to parse both
1969 * the whole and fraction portions. This function also figures out
1970 * the base of the number.
1972 static int preprocess_numeric_str(char *buffer, __u64 *mult, __u64 def_mult,
1973 bool allow_units, char **whole, char **frac,
1976 bool hit_decimal = false;
1977 bool hit_unit = false;
1985 /* a hex string if it starts with "0x" */
1986 if (buffer[0] == '0' && tolower(buffer[1]) == 'x') {
1994 /* allow for a single new line before the null terminator */
1995 if (*buffer == '\n') {
2005 /* any chars after our unit indicates a malformed string */
2009 /* ensure we only hit one decimal */
2010 if (*buffer == '.') {
2014 /* if past start, there's a whole part */
2015 if (start != buffer)
2021 } else if (!isdigit(*buffer) &&
2022 !(*base == 16 && isxdigit(*buffer))) {
2024 /* if we allow units, attempt to get mult */
2026 rc = get_mult(*buffer, mult);
2030 /* string stops here, but keep processing */
2042 /* hit a decimal, make sure there's a fractional part */
2048 /* didn't hit a decimal, but may have a whole part */
2049 if (start != buffer && *start)
2053 /* malformed string if we didn't get anything */
2054 if (!*frac && !*whole)
2061 * Parses a numeric string which can contain a whole and fraction portion
2062 * into a __u64. Accepts a multiplier to apply to the value parsed. Also
2063 * allows the string to have a unit at the end. The function handles
2064 * wrapping of the final unsigned value.
2066 static int str_to_u64_parse(char *buffer, unsigned long count,
2067 __u64 *val, __u64 def_mult, bool allow_units)
2071 unsigned int frac_d = 1;
2072 __u64 wrap_indicator = ULLONG_MAX;
2077 unsigned int base = 10;
2079 rc = preprocess_numeric_str(buffer, &mult, def_mult, allow_units,
2080 &strwhole, &strfrac, &base);
2090 /* the multiplier limits how large the value can be */
2091 wrap_indicator /= mult;
2094 rc = kstrtoull(strwhole, base, &whole);
2098 if (whole > wrap_indicator)
2105 if (strlen(strfrac) > 10)
2108 rc = kstrtoull(strfrac, base, &frac);
2112 /* determine power of fractional portion */
2118 /* fractional portion is too large to perform calculation */
2119 if (frac > wrap_indicator)
2123 do_div(frac, frac_d);
2126 /* check that the sum of whole and fraction fits in u64 */
2127 if (whole > (ULLONG_MAX - frac))
2130 *val = whole + frac;
2136 * This function parses numeric/hex strings into __s64. It accepts a multiplier
2137 * which will apply to the value parsed. It also can allow the string to
2138 * have a unit as the last character. The function handles overflow/underflow
2139 * of the signed integer.
2141 static int str_to_s64_internal(const char __user *buffer, unsigned long count,
2142 __s64 *val, __u64 def_mult, bool allow_units)
2146 unsigned int offset = 0;
2147 int signed sign = 1;
2148 __u64 max = LLONG_MAX;
2151 if (count > (sizeof(kernbuf) - 1))
2154 if (copy_from_user(kernbuf, buffer, count))
2157 kernbuf[count] = '\0';
2159 /* keep track of our sign */
2160 if (*kernbuf == '-') {
2163 /* equivalent to max = -LLONG_MIN, avoids overflow */
2167 rc = str_to_u64_parse(kernbuf + offset, count - offset,
2168 &tmp, def_mult, allow_units);
2172 /* check for overflow/underflow */
2176 *val = (__s64)tmp * sign;
2182 * Convert a user string into a signed 64 bit number. This function produces
2183 * an error when the value parsed from the string underflows or
2184 * overflows. This function accepts strings which contain digits and
2185 * optionally a decimal or hex strings which are prefixed with "0x".
2187 * \param[in] buffer string consisting of numbers and optionally a decimal
2188 * \param[in] count buffer length
2189 * \param[in] val if successful, the value represented by the string
2191 * \retval 0 on success
2192 * \retval negative number on error
2194 int lprocfs_str_to_s64(const char __user *buffer, unsigned long count,
2197 return str_to_s64_internal(buffer, count, val, 1, false);
2199 EXPORT_SYMBOL(lprocfs_str_to_s64);
2202 * Convert a user string into a signed 64 bit number. This function produces
2203 * an error when the value parsed from the string times multiplier underflows or
2204 * overflows. This function only accepts strings that contains digits, an
2205 * optional decimal, and a char representing a unit at the end. If a unit is
2206 * specified in the string, the multiplier provided by the caller is ignored.
2207 * This function can also accept hexadecimal strings which are prefixed with
2210 * \param[in] buffer string consisting of numbers, a decimal, and a unit
2211 * \param[in] count buffer length
2212 * \param[in] val if successful, the value represented by the string
2213 * \param[in] defunit default unit if string doesn't contain one
2215 * \retval 0 on success
2216 * \retval negative number on error
2218 int lprocfs_str_with_units_to_s64(const char __user *buffer,
2219 unsigned long count, __s64 *val, char defunit)
2224 if (defunit != '1') {
2225 rc = get_mult(defunit, &mult);
2230 return str_to_s64_internal(buffer, count, val, mult, true);
2232 EXPORT_SYMBOL(lprocfs_str_with_units_to_s64);
2234 static char *lprocfs_strnstr(const char *s1, const char *s2, size_t len)
2243 if (!memcmp(s1, s2, l2))
2251 * Find the string \a name in the input \a buffer, and return a pointer to the
2252 * value immediately following \a name, reducing \a count appropriately.
2253 * If \a name is not found the original \a buffer is returned.
2255 char *lprocfs_find_named_value(const char *buffer, const char *name,
2259 size_t buflen = *count;
2261 /* there is no strnstr() in rhel5 and ubuntu kernels */
2262 val = lprocfs_strnstr(buffer, name, buflen);
2264 return (char *)buffer;
2266 val += strlen(name); /* skip prefix */
2267 while (val < buffer + buflen && isspace(*val)) /* skip separator */
2271 while (val < buffer + buflen && isalnum(*val)) {
2276 return val - *count;
2278 EXPORT_SYMBOL(lprocfs_find_named_value);
2280 int ldebugfs_seq_create(struct dentry *parent, const char *name, umode_t mode,
2281 const struct file_operations *seq_fops, void *data)
2283 struct dentry *entry;
2285 /* Disallow secretly (un)writable entries. */
2286 LASSERT((!seq_fops->write) == (!(mode & 0222)));
2288 entry = debugfs_create_file(name, mode, parent, data, seq_fops);
2289 if (IS_ERR_OR_NULL(entry))
2290 return entry ? PTR_ERR(entry) : -ENOMEM;
2294 EXPORT_SYMBOL_GPL(ldebugfs_seq_create);
2296 int lprocfs_seq_create(struct proc_dir_entry *parent,
2299 const struct file_operations *seq_fops,
2302 struct proc_dir_entry *entry;
2305 /* Disallow secretly (un)writable entries. */
2306 LASSERT((seq_fops->write == NULL) == ((mode & 0222) == 0));
2308 entry = proc_create_data(name, mode, parent, seq_fops, data);
2315 EXPORT_SYMBOL(lprocfs_seq_create);
2317 int lprocfs_obd_seq_create(struct obd_device *dev,
2320 const struct file_operations *seq_fops,
2323 return (lprocfs_seq_create(dev->obd_proc_entry, name,
2324 mode, seq_fops, data));
2326 EXPORT_SYMBOL(lprocfs_obd_seq_create);
2328 void lprocfs_oh_tally(struct obd_histogram *oh, unsigned int value)
2330 if (value >= OBD_HIST_MAX)
2331 value = OBD_HIST_MAX - 1;
2333 spin_lock(&oh->oh_lock);
2334 oh->oh_buckets[value]++;
2335 spin_unlock(&oh->oh_lock);
2337 EXPORT_SYMBOL(lprocfs_oh_tally);
2339 void lprocfs_oh_tally_log2(struct obd_histogram *oh, unsigned int value)
2341 unsigned int val = 0;
2343 if (likely(value != 0))
2344 val = min(fls(value - 1), OBD_HIST_MAX);
2346 lprocfs_oh_tally(oh, val);
2348 EXPORT_SYMBOL(lprocfs_oh_tally_log2);
2350 unsigned long lprocfs_oh_sum(struct obd_histogram *oh)
2352 unsigned long ret = 0;
2355 for (i = 0; i < OBD_HIST_MAX; i++)
2356 ret += oh->oh_buckets[i];
2359 EXPORT_SYMBOL(lprocfs_oh_sum);
2361 void lprocfs_oh_clear(struct obd_histogram *oh)
2363 spin_lock(&oh->oh_lock);
2364 memset(oh->oh_buckets, 0, sizeof(oh->oh_buckets));
2365 spin_unlock(&oh->oh_lock);
2367 EXPORT_SYMBOL(lprocfs_oh_clear);
2369 ssize_t lustre_attr_show(struct kobject *kobj,
2370 struct attribute *attr, char *buf)
2372 struct lustre_attr *a = container_of(attr, struct lustre_attr, attr);
2374 return a->show ? a->show(kobj, attr, buf) : 0;
2376 EXPORT_SYMBOL_GPL(lustre_attr_show);
2378 ssize_t lustre_attr_store(struct kobject *kobj, struct attribute *attr,
2379 const char *buf, size_t len)
2381 struct lustre_attr *a = container_of(attr, struct lustre_attr, attr);
2383 return a->store ? a->store(kobj, attr, buf, len) : len;
2385 EXPORT_SYMBOL_GPL(lustre_attr_store);
2387 const struct sysfs_ops lustre_sysfs_ops = {
2388 .show = lustre_attr_show,
2389 .store = lustre_attr_store,
2391 EXPORT_SYMBOL_GPL(lustre_sysfs_ops);
2393 int lprocfs_obd_max_pages_per_rpc_seq_show(struct seq_file *m, void *data)
2395 struct obd_device *dev = data;
2396 struct client_obd *cli = &dev->u.cli;
2398 spin_lock(&cli->cl_loi_list_lock);
2399 seq_printf(m, "%d\n", cli->cl_max_pages_per_rpc);
2400 spin_unlock(&cli->cl_loi_list_lock);
2403 EXPORT_SYMBOL(lprocfs_obd_max_pages_per_rpc_seq_show);
2405 ssize_t lprocfs_obd_max_pages_per_rpc_seq_write(struct file *file,
2406 const char __user *buffer,
2407 size_t count, loff_t *off)
2409 struct obd_device *dev =
2410 ((struct seq_file *)file->private_data)->private;
2411 struct client_obd *cli = &dev->u.cli;
2412 struct obd_connect_data *ocd = &cli->cl_import->imp_connect_data;
2416 rc = lprocfs_str_with_units_to_s64(buffer, count, &val, '1');
2422 /* if the max_pages is specified in bytes, convert to pages */
2423 if (val >= ONE_MB_BRW_SIZE)
2426 LPROCFS_CLIMP_CHECK(dev);
2428 chunk_mask = ~((1 << (cli->cl_chunkbits - PAGE_SHIFT)) - 1);
2429 /* max_pages_per_rpc must be chunk aligned */
2430 val = (val + ~chunk_mask) & chunk_mask;
2431 if (val == 0 || (ocd->ocd_brw_size != 0 &&
2432 val > ocd->ocd_brw_size >> PAGE_SHIFT)) {
2433 LPROCFS_CLIMP_EXIT(dev);
2436 spin_lock(&cli->cl_loi_list_lock);
2437 cli->cl_max_pages_per_rpc = val;
2438 client_adjust_max_dirty(cli);
2439 spin_unlock(&cli->cl_loi_list_lock);
2441 LPROCFS_CLIMP_EXIT(dev);
2444 EXPORT_SYMBOL(lprocfs_obd_max_pages_per_rpc_seq_write);
2446 int lprocfs_obd_short_io_bytes_seq_show(struct seq_file *m, void *data)
2448 struct obd_device *dev = data;
2449 struct client_obd *cli = &dev->u.cli;
2451 spin_lock(&cli->cl_loi_list_lock);
2452 seq_printf(m, "%d\n", cli->cl_short_io_bytes);
2453 spin_unlock(&cli->cl_loi_list_lock);
2456 EXPORT_SYMBOL(lprocfs_obd_short_io_bytes_seq_show);
2459 /* Used to catch people who think they're specifying pages. */
2460 #define MIN_SHORT_IO_BYTES 64
2462 ssize_t lprocfs_obd_short_io_bytes_seq_write(struct file *file,
2463 const char __user *buffer,
2464 size_t count, loff_t *off)
2466 struct obd_device *dev = ((struct seq_file *)
2467 file->private_data)->private;
2468 struct client_obd *cli = &dev->u.cli;
2472 LPROCFS_CLIMP_CHECK(dev);
2474 rc = lprocfs_str_to_s64(buffer, count, &val);
2478 if (val > OBD_MAX_SHORT_IO_BYTES || val < MIN_SHORT_IO_BYTES)
2479 GOTO(out, rc = -ERANGE);
2483 spin_lock(&cli->cl_loi_list_lock);
2484 if (val > (cli->cl_max_pages_per_rpc << PAGE_SHIFT))
2487 cli->cl_short_io_bytes = val;
2488 spin_unlock(&cli->cl_loi_list_lock);
2491 LPROCFS_CLIMP_EXIT(dev);
2494 EXPORT_SYMBOL(lprocfs_obd_short_io_bytes_seq_write);
2496 int lprocfs_wr_root_squash(const char __user *buffer, unsigned long count,
2497 struct root_squash_info *squash, char *name)
2500 char kernbuf[64], *tmp, *errmsg;
2501 unsigned long uid, gid;
2504 if (count >= sizeof(kernbuf)) {
2505 errmsg = "string too long";
2506 GOTO(failed_noprint, rc = -EINVAL);
2508 if (copy_from_user(kernbuf, buffer, count)) {
2509 errmsg = "bad address";
2510 GOTO(failed_noprint, rc = -EFAULT);
2512 kernbuf[count] = '\0';
2514 /* look for uid gid separator */
2515 tmp = strchr(kernbuf, ':');
2517 errmsg = "needs uid:gid format";
2518 GOTO(failed, rc = -EINVAL);
2524 if (kstrtoul(kernbuf, 0, &uid) != 0) {
2526 GOTO(failed, rc = -EINVAL);
2530 if (kstrtoul(tmp, 0, &gid) != 0) {
2532 GOTO(failed, rc = -EINVAL);
2535 squash->rsi_uid = uid;
2536 squash->rsi_gid = gid;
2538 LCONSOLE_INFO("%s: root_squash is set to %u:%u\n",
2539 name, squash->rsi_uid, squash->rsi_gid);
2547 CWARN("%s: failed to set root_squash to \"%s\", %s, rc = %d\n",
2548 name, kernbuf, errmsg, rc);
2551 CWARN("%s: failed to set root_squash due to %s, rc = %d\n",
2555 EXPORT_SYMBOL(lprocfs_wr_root_squash);
2558 int lprocfs_wr_nosquash_nids(const char __user *buffer, unsigned long count,
2559 struct root_squash_info *squash, char *name)
2562 char *kernbuf = NULL;
2564 struct list_head tmp;
2569 errmsg = "string too long";
2570 GOTO(failed, rc = -EINVAL);
2573 OBD_ALLOC(kernbuf, count + 1);
2574 if (kernbuf == NULL) {
2575 errmsg = "no memory";
2576 GOTO(failed, rc = -ENOMEM);
2578 if (copy_from_user(kernbuf, buffer, count)) {
2579 errmsg = "bad address";
2580 GOTO(failed, rc = -EFAULT);
2582 kernbuf[count] = '\0';
2584 if (count > 0 && kernbuf[count - 1] == '\n')
2587 if ((len == 4 && strncmp(kernbuf, "NONE", len) == 0) ||
2588 (len == 5 && strncmp(kernbuf, "clear", len) == 0)) {
2589 /* empty string is special case */
2590 down_write(&squash->rsi_sem);
2591 if (!list_empty(&squash->rsi_nosquash_nids))
2592 cfs_free_nidlist(&squash->rsi_nosquash_nids);
2593 up_write(&squash->rsi_sem);
2594 LCONSOLE_INFO("%s: nosquash_nids is cleared\n", name);
2595 OBD_FREE(kernbuf, count + 1);
2599 INIT_LIST_HEAD(&tmp);
2600 if (cfs_parse_nidlist(kernbuf, count, &tmp) <= 0) {
2601 errmsg = "can't parse";
2602 GOTO(failed, rc = -EINVAL);
2604 LCONSOLE_INFO("%s: nosquash_nids set to %s\n",
2606 OBD_FREE(kernbuf, count + 1);
2609 down_write(&squash->rsi_sem);
2610 if (!list_empty(&squash->rsi_nosquash_nids))
2611 cfs_free_nidlist(&squash->rsi_nosquash_nids);
2612 list_splice(&tmp, &squash->rsi_nosquash_nids);
2613 up_write(&squash->rsi_sem);
2619 CWARN("%s: failed to set nosquash_nids to \"%s\", %s rc = %d\n",
2620 name, kernbuf, errmsg, rc);
2621 OBD_FREE(kernbuf, count + 1);
2623 CWARN("%s: failed to set nosquash_nids due to %s rc = %d\n",
2628 EXPORT_SYMBOL(lprocfs_wr_nosquash_nids);
2630 #endif /* CONFIG_PROC_FS*/