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 == NULL || name == NULL || fops == NULL)
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, const char *format, ...)
112 struct proc_dir_entry *entry;
116 if (parent == NULL || format == NULL)
119 OBD_ALLOC_WAIT(dest, MAX_STRING_SIZE + 1);
123 va_start(ap, format);
124 vsnprintf(dest, MAX_STRING_SIZE, format, ap);
127 entry = proc_symlink(name, parent, dest);
129 CERROR("LprocFS: Could not create symbolic link from "
130 "%s to %s\n", name, dest);
132 OBD_FREE(dest, MAX_STRING_SIZE + 1);
135 EXPORT_SYMBOL(lprocfs_add_symlink);
137 static const struct file_operations lprocfs_generic_fops = { };
139 int ldebugfs_add_vars(struct dentry *parent, struct lprocfs_vars *list,
142 if (IS_ERR_OR_NULL(parent) || IS_ERR_OR_NULL(list))
146 struct dentry *entry;
149 if (list->proc_mode != 0000) {
150 mode = list->proc_mode;
151 } else if (list->fops) {
152 if (list->fops->read)
154 if (list->fops->write)
157 entry = debugfs_create_file(list->name, mode, parent,
159 list->fops ? : &lprocfs_generic_fops);
160 if (IS_ERR_OR_NULL(entry))
161 return entry ? PTR_ERR(entry) : -ENOMEM;
166 EXPORT_SYMBOL_GPL(ldebugfs_add_vars);
171 * \param root [in] The parent proc entry on which new entry will be added.
172 * \param list [in] Array of proc entries to be added.
173 * \param data [in] The argument to be passed when entries read/write routines
174 * are called through /proc file.
176 * \retval 0 on success
180 lprocfs_add_vars(struct proc_dir_entry *root, struct lprocfs_vars *list,
183 if (root == NULL || list == NULL)
186 while (list->name != NULL) {
187 struct proc_dir_entry *proc;
190 if (list->proc_mode != 0000) {
191 mode = list->proc_mode;
192 } else if (list->fops) {
193 if (list->fops->read)
195 if (list->fops->write)
198 proc = proc_create_data(list->name, mode, root,
199 list->fops ?: &lprocfs_generic_fops,
207 EXPORT_SYMBOL(lprocfs_add_vars);
209 void ldebugfs_remove(struct dentry **entryp)
211 debugfs_remove_recursive(*entryp);
214 EXPORT_SYMBOL_GPL(ldebugfs_remove);
216 #ifndef HAVE_REMOVE_PROC_SUBTREE
217 /* for b=10866, global variable */
218 DECLARE_RWSEM(_lprocfs_lock);
219 EXPORT_SYMBOL(_lprocfs_lock);
221 static void lprocfs_remove_nolock(struct proc_dir_entry **proot)
223 struct proc_dir_entry *root = *proot;
224 struct proc_dir_entry *temp = root;
225 struct proc_dir_entry *rm_entry;
226 struct proc_dir_entry *parent;
229 if (root == NULL || IS_ERR(root))
232 parent = root->parent;
233 LASSERT(parent != NULL);
236 while (temp->subdir != NULL)
242 /* Memory corruption once caused this to fail, and
243 without this LASSERT we would loop here forever. */
244 LASSERTF(strlen(rm_entry->name) == rm_entry->namelen,
245 "0x%p %s/%s len %d\n", rm_entry, temp->name,
246 rm_entry->name, (int)strlen(rm_entry->name));
248 remove_proc_entry(rm_entry->name, temp);
254 int remove_proc_subtree(const char *name, struct proc_dir_entry *parent)
256 struct proc_dir_entry *t = NULL;
257 struct proc_dir_entry **p;
260 LASSERT(parent != NULL);
263 down_write(&_lprocfs_lock);
264 /* lookup target name */
265 for (p = &parent->subdir; *p; p = &(*p)->next) {
266 if ((*p)->namelen != len)
268 if (memcmp(name, (*p)->name, len))
275 /* verify it's empty: do not count "num_refs" */
276 for (p = &t->subdir; *p; p = &(*p)->next) {
277 if ((*p)->namelen != strlen("num_refs")) {
281 if (memcmp("num_refs", (*p)->name,
282 strlen("num_refs"))) {
290 lprocfs_remove_nolock(&t);
292 up_write(&_lprocfs_lock);
295 #endif /* !HAVE_REMOVE_PROC_SUBTREE */
297 #ifndef HAVE_PROC_REMOVE
298 void proc_remove(struct proc_dir_entry *de)
300 #ifndef HAVE_REMOVE_PROC_SUBTREE
301 down_write(&_lprocfs_lock); /* search vs remove race */
302 lprocfs_remove_nolock(&de);
303 up_write(&_lprocfs_lock);
306 remove_proc_subtree(de->name, de->parent);
311 void lprocfs_remove(struct proc_dir_entry **rooth)
316 EXPORT_SYMBOL(lprocfs_remove);
318 void lprocfs_remove_proc_entry(const char *name, struct proc_dir_entry *parent)
320 LASSERT(parent != NULL);
321 remove_proc_entry(name, parent);
323 EXPORT_SYMBOL(lprocfs_remove_proc_entry);
325 struct dentry *ldebugfs_register(const char *name, struct dentry *parent,
326 struct lprocfs_vars *list, void *data)
328 struct dentry *entry;
330 entry = debugfs_create_dir(name, parent);
331 if (IS_ERR_OR_NULL(entry)) {
332 entry = entry ?: ERR_PTR(-ENOMEM);
336 if (!IS_ERR_OR_NULL(list)) {
339 rc = ldebugfs_add_vars(entry, list, data);
341 debugfs_remove(entry);
348 EXPORT_SYMBOL_GPL(ldebugfs_register);
350 struct proc_dir_entry *
351 lprocfs_register(const char *name, struct proc_dir_entry *parent,
352 struct lprocfs_vars *list, void *data)
354 struct proc_dir_entry *newchild;
356 newchild = proc_mkdir(name, parent);
357 if (newchild == NULL)
358 return ERR_PTR(-ENOMEM);
361 int rc = lprocfs_add_vars(newchild, list, data);
363 lprocfs_remove(&newchild);
369 EXPORT_SYMBOL(lprocfs_register);
371 /* Generic callbacks */
372 int lprocfs_uuid_seq_show(struct seq_file *m, void *data)
374 struct obd_device *obd = data;
376 LASSERT(obd != NULL);
377 seq_printf(m, "%s\n", obd->obd_uuid.uuid);
380 EXPORT_SYMBOL(lprocfs_uuid_seq_show);
382 static ssize_t uuid_show(struct kobject *kobj, struct attribute *attr,
385 struct obd_device *obd = container_of(kobj, struct obd_device,
388 return sprintf(buf, "%s\n", obd->obd_uuid.uuid);
390 LUSTRE_RO_ATTR(uuid);
392 int lprocfs_name_seq_show(struct seq_file *m, void *data)
394 struct obd_device *dev = data;
396 LASSERT(dev != NULL);
397 seq_printf(m, "%s\n", dev->obd_name);
400 EXPORT_SYMBOL(lprocfs_name_seq_show);
402 static ssize_t blocksize_show(struct kobject *kobj, struct attribute *attr,
405 struct obd_device *obd = container_of(kobj, struct obd_device,
407 struct obd_statfs osfs;
410 rc = obd_statfs(NULL, obd->obd_self_export, &osfs,
411 ktime_get_seconds() - OBD_STATFS_CACHE_SECONDS,
414 return sprintf(buf, "%u\n", osfs.os_bsize);
418 LUSTRE_RO_ATTR(blocksize);
420 static ssize_t kbytestotal_show(struct kobject *kobj, struct attribute *attr,
423 struct obd_device *obd = container_of(kobj, struct obd_device,
425 struct obd_statfs osfs;
428 rc = obd_statfs(NULL, obd->obd_self_export, &osfs,
429 ktime_get_seconds() - OBD_STATFS_CACHE_SECONDS,
432 u32 blk_size = osfs.os_bsize >> 10;
433 u64 result = osfs.os_blocks;
435 while (blk_size >>= 1)
438 return sprintf(buf, "%llu\n", result);
443 LUSTRE_RO_ATTR(kbytestotal);
445 static ssize_t kbytesfree_show(struct kobject *kobj, struct attribute *attr,
448 struct obd_device *obd = container_of(kobj, struct obd_device,
450 struct obd_statfs osfs;
453 rc = obd_statfs(NULL, obd->obd_self_export, &osfs,
454 ktime_get_seconds() - OBD_STATFS_CACHE_SECONDS,
457 u32 blk_size = osfs.os_bsize >> 10;
458 u64 result = osfs.os_bfree;
460 while (blk_size >>= 1)
463 return sprintf(buf, "%llu\n", result);
468 LUSTRE_RO_ATTR(kbytesfree);
470 static ssize_t kbytesavail_show(struct kobject *kobj, struct attribute *attr,
473 struct obd_device *obd = container_of(kobj, struct obd_device,
475 struct obd_statfs osfs;
478 rc = obd_statfs(NULL, obd->obd_self_export, &osfs,
479 ktime_get_seconds() - OBD_STATFS_CACHE_SECONDS,
482 u32 blk_size = osfs.os_bsize >> 10;
483 u64 result = osfs.os_bavail;
485 while (blk_size >>= 1)
488 return sprintf(buf, "%llu\n", result);
493 LUSTRE_RO_ATTR(kbytesavail);
495 static ssize_t filestotal_show(struct kobject *kobj, struct attribute *attr,
498 struct obd_device *obd = container_of(kobj, struct obd_device,
500 struct obd_statfs osfs;
503 rc = obd_statfs(NULL, obd->obd_self_export, &osfs,
504 ktime_get_seconds() - OBD_STATFS_CACHE_SECONDS,
507 return sprintf(buf, "%llu\n", osfs.os_files);
511 LUSTRE_RO_ATTR(filestotal);
513 static ssize_t filesfree_show(struct kobject *kobj, struct attribute *attr,
516 struct obd_device *obd = container_of(kobj, struct obd_device,
518 struct obd_statfs osfs;
521 rc = obd_statfs(NULL, obd->obd_self_export, &osfs,
522 ktime_get_seconds() - OBD_STATFS_CACHE_SECONDS,
525 return sprintf(buf, "%llu\n", osfs.os_ffree);
529 LUSTRE_RO_ATTR(filesfree);
531 ssize_t conn_uuid_show(struct kobject *kobj, struct attribute *attr, char *buf)
533 struct obd_device *obd = container_of(kobj, struct obd_device,
535 struct ptlrpc_connection *conn;
538 LPROCFS_CLIMP_CHECK(obd);
539 conn = obd->u.cli.cl_import->imp_connection;
540 if (conn && obd->u.cli.cl_import)
541 count = sprintf(buf, "%s\n", conn->c_remote_uuid.uuid);
543 count = sprintf(buf, "%s\n", "<none>");
545 LPROCFS_CLIMP_EXIT(obd);
548 EXPORT_SYMBOL(conn_uuid_show);
550 int lprocfs_server_uuid_seq_show(struct seq_file *m, void *data)
552 struct obd_device *obd = data;
553 struct obd_import *imp;
554 char *imp_state_name = NULL;
557 LASSERT(obd != NULL);
558 LPROCFS_CLIMP_CHECK(obd);
559 imp = obd->u.cli.cl_import;
560 imp_state_name = ptlrpc_import_state_name(imp->imp_state);
561 seq_printf(m, "%s\t%s%s\n", obd2cli_tgt(obd), imp_state_name,
562 imp->imp_deactive ? "\tDEACTIVATED" : "");
564 LPROCFS_CLIMP_EXIT(obd);
567 EXPORT_SYMBOL(lprocfs_server_uuid_seq_show);
569 int lprocfs_conn_uuid_seq_show(struct seq_file *m, void *data)
571 struct obd_device *obd = data;
572 struct ptlrpc_connection *conn;
575 LASSERT(obd != NULL);
577 LPROCFS_CLIMP_CHECK(obd);
578 conn = obd->u.cli.cl_import->imp_connection;
579 if (conn && obd->u.cli.cl_import)
580 seq_printf(m, "%s\n", conn->c_remote_uuid.uuid);
582 seq_printf(m, "%s\n", "<none>");
584 LPROCFS_CLIMP_EXIT(obd);
587 EXPORT_SYMBOL(lprocfs_conn_uuid_seq_show);
589 /** add up per-cpu counters */
592 * Lock statistics structure for access, possibly only on this CPU.
594 * The statistics struct may be allocated with per-CPU structures for
595 * efficient concurrent update (usually only on server-wide stats), or
596 * as a single global struct (e.g. for per-client or per-job statistics),
597 * so the required locking depends on the type of structure allocated.
599 * For per-CPU statistics, pin the thread to the current cpuid so that
600 * will only access the statistics for that CPU. If the stats structure
601 * for the current CPU has not been allocated (or previously freed),
602 * allocate it now. The per-CPU statistics do not need locking since
603 * the thread is pinned to the CPU during update.
605 * For global statistics, lock the stats structure to prevent concurrent update.
607 * \param[in] stats statistics structure to lock
608 * \param[in] opc type of operation:
609 * LPROCFS_GET_SMP_ID: "lock" and return current CPU index
610 * for incrementing statistics for that CPU
611 * LPROCFS_GET_NUM_CPU: "lock" and return number of used
612 * CPU indices to iterate over all indices
613 * \param[out] flags CPU interrupt saved state for IRQ-safe locking
615 * \retval cpuid of current thread or number of allocated structs
616 * \retval negative on error (only for opc LPROCFS_GET_SMP_ID + per-CPU stats)
618 int lprocfs_stats_lock(struct lprocfs_stats *stats,
619 enum lprocfs_stats_lock_ops opc,
620 unsigned long *flags)
622 if (stats->ls_flags & LPROCFS_STATS_FLAG_NOPERCPU) {
623 if (stats->ls_flags & LPROCFS_STATS_FLAG_IRQ_SAFE)
624 spin_lock_irqsave(&stats->ls_lock, *flags);
626 spin_lock(&stats->ls_lock);
627 return opc == LPROCFS_GET_NUM_CPU ? 1 : 0;
631 case LPROCFS_GET_SMP_ID: {
632 unsigned int cpuid = get_cpu();
634 if (unlikely(!stats->ls_percpu[cpuid])) {
635 int rc = lprocfs_stats_alloc_one(stats, cpuid);
644 case LPROCFS_GET_NUM_CPU:
645 return stats->ls_biggest_alloc_num;
652 * Unlock statistics structure after access.
654 * Unlock the lock acquired via lprocfs_stats_lock() for global statistics,
655 * or unpin this thread from the current cpuid for per-CPU statistics.
657 * This function must be called using the same arguments as used when calling
658 * lprocfs_stats_lock() so that the correct operation can be performed.
660 * \param[in] stats statistics structure to unlock
661 * \param[in] opc type of operation (current cpuid or number of structs)
662 * \param[in] flags CPU interrupt saved state for IRQ-safe locking
664 void lprocfs_stats_unlock(struct lprocfs_stats *stats,
665 enum lprocfs_stats_lock_ops opc,
666 unsigned long *flags)
668 if (stats->ls_flags & LPROCFS_STATS_FLAG_NOPERCPU) {
669 if (stats->ls_flags & LPROCFS_STATS_FLAG_IRQ_SAFE)
670 spin_unlock_irqrestore(&stats->ls_lock, *flags);
672 spin_unlock(&stats->ls_lock);
673 } else if (opc == LPROCFS_GET_SMP_ID) {
678 /** add up per-cpu counters */
679 void lprocfs_stats_collect(struct lprocfs_stats *stats, int idx,
680 struct lprocfs_counter *cnt)
682 unsigned int num_entry;
683 struct lprocfs_counter *percpu_cntr;
685 unsigned long flags = 0;
687 memset(cnt, 0, sizeof(*cnt));
690 /* set count to 1 to avoid divide-by-zero errs in callers */
695 cnt->lc_min = LC_MIN_INIT;
697 num_entry = lprocfs_stats_lock(stats, LPROCFS_GET_NUM_CPU, &flags);
699 for (i = 0; i < num_entry; i++) {
700 if (stats->ls_percpu[i] == NULL)
702 percpu_cntr = lprocfs_stats_counter_get(stats, i, idx);
704 cnt->lc_count += percpu_cntr->lc_count;
705 cnt->lc_sum += percpu_cntr->lc_sum;
706 if (percpu_cntr->lc_min < cnt->lc_min)
707 cnt->lc_min = percpu_cntr->lc_min;
708 if (percpu_cntr->lc_max > cnt->lc_max)
709 cnt->lc_max = percpu_cntr->lc_max;
710 cnt->lc_sumsquare += percpu_cntr->lc_sumsquare;
713 lprocfs_stats_unlock(stats, LPROCFS_GET_NUM_CPU, &flags);
716 static void obd_import_flags2str(struct obd_import *imp, struct seq_file *m)
720 if (imp->imp_obd->obd_no_recov) {
721 seq_printf(m, "no_recov");
725 flag2str(imp, invalid);
726 flag2str(imp, deactive);
727 flag2str(imp, replayable);
728 flag2str(imp, delayed_recovery);
729 flag2str(imp, vbr_failed);
730 flag2str(imp, pingable);
731 flag2str(imp, resend_replay);
732 flag2str(imp, no_pinger_recover);
733 flag2str(imp, need_mne_swab);
734 flag2str(imp, connect_tried);
737 static const char *obd_connect_names[] = {
756 "remote_client_by_force",
765 "mds_mds_connection",
768 "alt_checksum_algorithm",
809 void obd_connect_seq_flags2str(struct seq_file *m, __u64 flags, __u64 flags2,
816 for (i = 0, mask = 1; i < 64; i++, mask <<= 1) {
818 seq_printf(m, "%s%s",
819 first ? "" : sep, obd_connect_names[i]);
824 if (flags & ~(mask - 1)) {
825 seq_printf(m, "%sunknown_%#llx",
826 first ? "" : sep, flags & ~(mask - 1));
830 if (!(flags & OBD_CONNECT_FLAGS2) || flags2 == 0)
833 for (i = 64, mask = 1; obd_connect_names[i] != NULL; i++, mask <<= 1) {
835 seq_printf(m, "%s%s",
836 first ? "" : sep, obd_connect_names[i]);
841 if (flags2 & ~(mask - 1)) {
842 seq_printf(m, "%sunknown2_%#llx",
843 first ? "" : sep, flags2 & ~(mask - 1));
847 EXPORT_SYMBOL(obd_connect_seq_flags2str);
849 int obd_connect_flags2str(char *page, int count, __u64 flags, __u64 flags2,
855 for (i = 0, mask = 1; i < 64; i++, mask <<= 1) {
857 ret += snprintf(page + ret, count - ret, "%s%s",
858 ret ? sep : "", obd_connect_names[i]);
861 if (flags & ~(mask - 1))
862 ret += snprintf(page + ret, count - ret,
864 ret ? sep : "", flags & ~(mask - 1));
866 if (!(flags & OBD_CONNECT_FLAGS2) || flags2 == 0)
869 for (i = 64, mask = 1; obd_connect_names[i] != NULL; i++, mask <<= 1) {
871 ret += snprintf(page + ret, count - ret, "%s%s",
872 ret ? sep : "", obd_connect_names[i]);
875 if (flags2 & ~(mask - 1))
876 ret += snprintf(page + ret, count - ret,
878 ret ? sep : "", flags2 & ~(mask - 1));
882 EXPORT_SYMBOL(obd_connect_flags2str);
885 obd_connect_data_seqprint(struct seq_file *m, struct obd_connect_data *ocd)
889 LASSERT(ocd != NULL);
890 flags = ocd->ocd_connect_flags;
892 seq_printf(m, " connect_data:\n"
895 ocd->ocd_connect_flags,
897 if (flags & OBD_CONNECT_VERSION)
898 seq_printf(m, " target_version: %u.%u.%u.%u\n",
899 OBD_OCD_VERSION_MAJOR(ocd->ocd_version),
900 OBD_OCD_VERSION_MINOR(ocd->ocd_version),
901 OBD_OCD_VERSION_PATCH(ocd->ocd_version),
902 OBD_OCD_VERSION_FIX(ocd->ocd_version));
903 if (flags & OBD_CONNECT_MDS)
904 seq_printf(m, " mdt_index: %d\n", ocd->ocd_group);
905 if (flags & OBD_CONNECT_GRANT)
906 seq_printf(m, " initial_grant: %d\n", ocd->ocd_grant);
907 if (flags & OBD_CONNECT_INDEX)
908 seq_printf(m, " target_index: %u\n", ocd->ocd_index);
909 if (flags & OBD_CONNECT_BRW_SIZE)
910 seq_printf(m, " max_brw_size: %d\n", ocd->ocd_brw_size);
911 if (flags & OBD_CONNECT_IBITS)
912 seq_printf(m, " ibits_known: %#llx\n",
913 ocd->ocd_ibits_known);
914 if (flags & OBD_CONNECT_GRANT_PARAM)
915 seq_printf(m, " grant_block_size: %d\n"
916 " grant_inode_size: %d\n"
917 " grant_max_extent_size: %d\n"
918 " grant_extent_tax: %d\n",
919 1 << ocd->ocd_grant_blkbits,
920 1 << ocd->ocd_grant_inobits,
921 ocd->ocd_grant_max_blks << ocd->ocd_grant_blkbits,
922 ocd->ocd_grant_tax_kb << 10);
923 if (flags & OBD_CONNECT_TRANSNO)
924 seq_printf(m, " first_transno: %#llx\n",
926 if (flags & OBD_CONNECT_CKSUM)
927 seq_printf(m, " cksum_types: %#x\n",
928 ocd->ocd_cksum_types);
929 if (flags & OBD_CONNECT_MAX_EASIZE)
930 seq_printf(m, " max_easize: %d\n", ocd->ocd_max_easize);
931 if (flags & OBD_CONNECT_MAXBYTES)
932 seq_printf(m, " max_object_bytes: %llu\n",
934 if (flags & OBD_CONNECT_MULTIMODRPCS)
935 seq_printf(m, " max_mod_rpcs: %hu\n",
936 ocd->ocd_maxmodrpcs);
939 int lprocfs_import_seq_show(struct seq_file *m, void *data)
941 char nidstr[LNET_NIDSTR_SIZE];
942 struct lprocfs_counter ret;
943 struct lprocfs_counter_header *header;
944 struct obd_device *obd = (struct obd_device *)data;
945 struct obd_import *imp;
946 struct obd_import_conn *conn;
947 struct obd_connect_data *ocd;
952 LASSERT(obd != NULL);
953 LPROCFS_CLIMP_CHECK(obd);
954 imp = obd->u.cli.cl_import;
955 ocd = &imp->imp_connect_data;
957 seq_printf(m, "import:\n"
961 " connect_flags: [ ",
964 ptlrpc_import_state_name(imp->imp_state));
965 obd_connect_seq_flags2str(m, imp->imp_connect_data.ocd_connect_flags,
966 imp->imp_connect_data.ocd_connect_flags2,
968 seq_printf(m, " ]\n");
969 obd_connect_data_seqprint(m, ocd);
970 seq_printf(m, " import_flags: [ ");
971 obd_import_flags2str(imp, m);
975 " failover_nids: [ ");
976 spin_lock(&imp->imp_lock);
978 list_for_each_entry(conn, &imp->imp_conn_list, oic_item) {
979 libcfs_nid2str_r(conn->oic_conn->c_peer.nid,
980 nidstr, sizeof(nidstr));
981 seq_printf(m, "%s%s", j ? ", " : "", nidstr);
984 if (imp->imp_connection != NULL)
985 libcfs_nid2str_r(imp->imp_connection->c_peer.nid,
986 nidstr, sizeof(nidstr));
988 strncpy(nidstr, "<none>", sizeof(nidstr));
990 " current_connection: %s\n"
991 " connection_attempts: %u\n"
993 " in-progress_invalidations: %u\n",
997 atomic_read(&imp->imp_inval_count));
998 spin_unlock(&imp->imp_lock);
1000 if (obd->obd_svc_stats == NULL)
1003 header = &obd->obd_svc_stats->ls_cnt_header[PTLRPC_REQWAIT_CNTR];
1004 lprocfs_stats_collect(obd->obd_svc_stats, PTLRPC_REQWAIT_CNTR, &ret);
1005 if (ret.lc_count != 0) {
1006 /* first argument to do_div MUST be __u64 */
1007 __u64 sum = ret.lc_sum;
1008 do_div(sum, ret.lc_count);
1012 seq_printf(m, " rpcs:\n"
1014 " unregistering: %u\n"
1016 " avg_waittime: %llu %s\n",
1017 atomic_read(&imp->imp_inflight),
1018 atomic_read(&imp->imp_unregistering),
1019 atomic_read(&imp->imp_timeouts),
1020 ret.lc_sum, header->lc_units);
1023 for(j = 0; j < IMP_AT_MAX_PORTALS; j++) {
1024 if (imp->imp_at.iat_portal[j] == 0)
1026 k = max_t(unsigned int, k,
1027 at_get(&imp->imp_at.iat_service_estimate[j]));
1029 seq_printf(m, " service_estimates:\n"
1030 " services: %u sec\n"
1031 " network: %u sec\n",
1033 at_get(&imp->imp_at.iat_net_latency));
1035 seq_printf(m, " transactions:\n"
1036 " last_replay: %llu\n"
1037 " peer_committed: %llu\n"
1038 " last_checked: %llu\n",
1039 imp->imp_last_replay_transno,
1040 imp->imp_peer_committed_transno,
1041 imp->imp_last_transno_checked);
1043 /* avg data rates */
1044 for (rw = 0; rw <= 1; rw++) {
1045 lprocfs_stats_collect(obd->obd_svc_stats,
1046 PTLRPC_LAST_CNTR + BRW_READ_BYTES + rw,
1048 if (ret.lc_sum > 0 && ret.lc_count > 0) {
1049 /* first argument to do_div MUST be __u64 */
1050 __u64 sum = ret.lc_sum;
1051 do_div(sum, ret.lc_count);
1053 seq_printf(m, " %s_data_averages:\n"
1054 " bytes_per_rpc: %llu\n",
1055 rw ? "write" : "read",
1058 k = (int)ret.lc_sum;
1059 j = opcode_offset(OST_READ + rw) + EXTRA_MAX_OPCODES;
1060 header = &obd->obd_svc_stats->ls_cnt_header[j];
1061 lprocfs_stats_collect(obd->obd_svc_stats, j, &ret);
1062 if (ret.lc_sum > 0 && ret.lc_count != 0) {
1063 /* first argument to do_div MUST be __u64 */
1064 __u64 sum = ret.lc_sum;
1065 do_div(sum, ret.lc_count);
1067 seq_printf(m, " %s_per_rpc: %llu\n",
1068 header->lc_units, ret.lc_sum);
1069 j = (int)ret.lc_sum;
1071 seq_printf(m, " MB_per_sec: %u.%.02u\n",
1072 k / j, (100 * k / j) % 100);
1077 LPROCFS_CLIMP_EXIT(obd);
1080 EXPORT_SYMBOL(lprocfs_import_seq_show);
1082 int lprocfs_state_seq_show(struct seq_file *m, void *data)
1084 struct obd_device *obd = (struct obd_device *)data;
1085 struct obd_import *imp;
1088 LASSERT(obd != NULL);
1089 LPROCFS_CLIMP_CHECK(obd);
1090 imp = obd->u.cli.cl_import;
1092 seq_printf(m, "current_state: %s\n",
1093 ptlrpc_import_state_name(imp->imp_state));
1094 seq_printf(m, "state_history:\n");
1095 k = imp->imp_state_hist_idx;
1096 for (j = 0; j < IMP_STATE_HIST_LEN; j++) {
1097 struct import_state_hist *ish =
1098 &imp->imp_state_hist[(k + j) % IMP_STATE_HIST_LEN];
1099 if (ish->ish_state == 0)
1101 seq_printf(m, " - [ %lld, %s ]\n", (s64)ish->ish_time,
1102 ptlrpc_import_state_name(ish->ish_state));
1105 LPROCFS_CLIMP_EXIT(obd);
1108 EXPORT_SYMBOL(lprocfs_state_seq_show);
1110 int lprocfs_at_hist_helper(struct seq_file *m, struct adaptive_timeout *at)
1113 for (i = 0; i < AT_BINS; i++)
1114 seq_printf(m, "%3u ", at->at_hist[i]);
1115 seq_printf(m, "\n");
1118 EXPORT_SYMBOL(lprocfs_at_hist_helper);
1120 /* See also ptlrpc_lprocfs_timeouts_show_seq */
1121 int lprocfs_timeouts_seq_show(struct seq_file *m, void *data)
1123 struct obd_device *obd = (struct obd_device *)data;
1124 struct obd_import *imp;
1125 unsigned int cur, worst;
1126 time64_t now, worstt;
1129 LASSERT(obd != NULL);
1130 LPROCFS_CLIMP_CHECK(obd);
1131 imp = obd->u.cli.cl_import;
1133 now = ktime_get_real_seconds();
1135 /* Some network health info for kicks */
1136 seq_printf(m, "%-10s : %lld, %llds ago\n",
1137 "last reply", (s64)imp->imp_last_reply_time,
1138 (s64)(now - imp->imp_last_reply_time));
1140 cur = at_get(&imp->imp_at.iat_net_latency);
1141 worst = imp->imp_at.iat_net_latency.at_worst_ever;
1142 worstt = imp->imp_at.iat_net_latency.at_worst_time;
1143 seq_printf(m, "%-10s : cur %3u worst %3u (at %lld, %llds ago) ",
1144 "network", cur, worst, (s64)worstt, (s64)(now - worstt));
1145 lprocfs_at_hist_helper(m, &imp->imp_at.iat_net_latency);
1147 for(i = 0; i < IMP_AT_MAX_PORTALS; i++) {
1148 if (imp->imp_at.iat_portal[i] == 0)
1150 cur = at_get(&imp->imp_at.iat_service_estimate[i]);
1151 worst = imp->imp_at.iat_service_estimate[i].at_worst_ever;
1152 worstt = imp->imp_at.iat_service_estimate[i].at_worst_time;
1153 seq_printf(m, "portal %-2d : cur %3u worst %3u (at %lld, %llds ago) ",
1154 imp->imp_at.iat_portal[i], cur, worst, (s64)worstt,
1155 (s64)(now - worstt));
1156 lprocfs_at_hist_helper(m, &imp->imp_at.iat_service_estimate[i]);
1159 LPROCFS_CLIMP_EXIT(obd);
1162 EXPORT_SYMBOL(lprocfs_timeouts_seq_show);
1164 int lprocfs_connect_flags_seq_show(struct seq_file *m, void *data)
1166 struct obd_device *obd = data;
1170 LPROCFS_CLIMP_CHECK(obd);
1171 flags = obd->u.cli.cl_import->imp_connect_data.ocd_connect_flags;
1172 flags2 = obd->u.cli.cl_import->imp_connect_data.ocd_connect_flags2;
1173 seq_printf(m, "flags=%#llx\n", flags);
1174 seq_printf(m, "flags2=%#llx\n", flags2);
1175 obd_connect_seq_flags2str(m, flags, flags2, "\n");
1176 seq_printf(m, "\n");
1177 LPROCFS_CLIMP_EXIT(obd);
1180 EXPORT_SYMBOL(lprocfs_connect_flags_seq_show);
1182 static struct attribute *obd_def_uuid_attrs[] = {
1183 &lustre_attr_uuid.attr,
1187 static struct attribute *obd_def_attrs[] = {
1188 &lustre_attr_blocksize.attr,
1189 &lustre_attr_kbytestotal.attr,
1190 &lustre_attr_kbytesfree.attr,
1191 &lustre_attr_kbytesavail.attr,
1192 &lustre_attr_filestotal.attr,
1193 &lustre_attr_filesfree.attr,
1194 &lustre_attr_uuid.attr,
1198 static void obd_sysfs_release(struct kobject *kobj)
1200 struct obd_device *obd = container_of(kobj, struct obd_device,
1203 complete(&obd->obd_kobj_unregister);
1206 int lprocfs_obd_setup(struct obd_device *obd, bool uuid_only)
1208 struct lprocfs_vars *debugfs_vars = NULL;
1211 if (!obd || obd->obd_magic != OBD_DEVICE_MAGIC)
1214 rc = kobject_set_name(&obd->obd_kset.kobj, "%s", obd->obd_name);
1218 obd->obd_ktype.sysfs_ops = &lustre_sysfs_ops;
1219 obd->obd_ktype.release = obd_sysfs_release;
1221 obd->obd_ktype.default_attrs = obd->obd_attrs;
1223 obd->obd_kset.kobj.parent = obd->obd_type->typ_kobj;
1224 obd->obd_kset.kobj.ktype = &obd->obd_ktype;
1225 init_completion(&obd->obd_kobj_unregister);
1226 rc = kset_register(&obd->obd_kset);
1231 obd->obd_attrs_group.attrs = obd_def_uuid_attrs;
1233 obd->obd_attrs_group.attrs = obd_def_attrs;
1235 rc = sysfs_create_group(&obd->obd_kset.kobj, &obd->obd_attrs_group);
1237 kset_unregister(&obd->obd_kset);
1241 if (!obd->obd_type->typ_procroot)
1242 debugfs_vars = obd->obd_vars;
1243 obd->obd_debugfs_entry = ldebugfs_register(obd->obd_name,
1244 obd->obd_type->typ_debugfs_entry,
1246 if (IS_ERR_OR_NULL(obd->obd_debugfs_entry)) {
1247 rc = obd->obd_debugfs_entry ? PTR_ERR(obd->obd_debugfs_entry)
1249 CERROR("error %d setting up debugfs for %s\n",
1251 obd->obd_debugfs_entry = NULL;
1252 lprocfs_obd_cleanup(obd);
1256 if (obd->obd_proc_entry || !obd->obd_type->typ_procroot)
1257 GOTO(already_registered, rc);
1259 obd->obd_proc_entry = lprocfs_register(obd->obd_name,
1260 obd->obd_type->typ_procroot,
1261 obd->obd_vars, obd);
1262 if (IS_ERR(obd->obd_proc_entry)) {
1263 rc = PTR_ERR(obd->obd_proc_entry);
1264 CERROR("error %d setting up lprocfs for %s\n",rc,obd->obd_name);
1265 obd->obd_proc_entry = NULL;
1266 lprocfs_obd_cleanup(obd);
1271 EXPORT_SYMBOL(lprocfs_obd_setup);
1273 int lprocfs_obd_cleanup(struct obd_device *obd)
1278 if (obd->obd_proc_exports_entry) {
1279 /* Should be no exports left */
1280 lprocfs_remove(&obd->obd_proc_exports_entry);
1281 obd->obd_proc_exports_entry = NULL;
1284 if (obd->obd_proc_entry) {
1285 lprocfs_remove(&obd->obd_proc_entry);
1286 obd->obd_proc_entry = NULL;
1289 if (!IS_ERR_OR_NULL(obd->obd_debugfs_entry))
1290 ldebugfs_remove(&obd->obd_debugfs_entry);
1292 sysfs_remove_group(&obd->obd_kset.kobj, &obd->obd_attrs_group);
1293 kset_unregister(&obd->obd_kset);
1294 wait_for_completion(&obd->obd_kobj_unregister);
1298 EXPORT_SYMBOL(lprocfs_obd_cleanup);
1300 int lprocfs_stats_alloc_one(struct lprocfs_stats *stats, unsigned int cpuid)
1302 struct lprocfs_counter *cntr;
1303 unsigned int percpusize;
1305 unsigned long flags = 0;
1308 LASSERT(stats->ls_percpu[cpuid] == NULL);
1309 LASSERT((stats->ls_flags & LPROCFS_STATS_FLAG_NOPERCPU) == 0);
1311 percpusize = lprocfs_stats_counter_size(stats);
1312 LIBCFS_ALLOC_ATOMIC(stats->ls_percpu[cpuid], percpusize);
1313 if (stats->ls_percpu[cpuid] != NULL) {
1315 if (unlikely(stats->ls_biggest_alloc_num <= cpuid)) {
1316 if (stats->ls_flags & LPROCFS_STATS_FLAG_IRQ_SAFE)
1317 spin_lock_irqsave(&stats->ls_lock, flags);
1319 spin_lock(&stats->ls_lock);
1320 if (stats->ls_biggest_alloc_num <= cpuid)
1321 stats->ls_biggest_alloc_num = cpuid + 1;
1322 if (stats->ls_flags & LPROCFS_STATS_FLAG_IRQ_SAFE) {
1323 spin_unlock_irqrestore(&stats->ls_lock, flags);
1325 spin_unlock(&stats->ls_lock);
1328 /* initialize the ls_percpu[cpuid] non-zero counter */
1329 for (i = 0; i < stats->ls_num; ++i) {
1330 cntr = lprocfs_stats_counter_get(stats, cpuid, i);
1331 cntr->lc_min = LC_MIN_INIT;
1337 struct lprocfs_stats *lprocfs_alloc_stats(unsigned int num,
1338 enum lprocfs_stats_flags flags)
1340 struct lprocfs_stats *stats;
1341 unsigned int num_entry;
1342 unsigned int percpusize = 0;
1348 if (lprocfs_no_percpu_stats != 0)
1349 flags |= LPROCFS_STATS_FLAG_NOPERCPU;
1351 if (flags & LPROCFS_STATS_FLAG_NOPERCPU)
1354 num_entry = num_possible_cpus();
1356 /* alloc percpu pointers for all possible cpu slots */
1357 LIBCFS_ALLOC(stats, offsetof(typeof(*stats), ls_percpu[num_entry]));
1361 stats->ls_num = num;
1362 stats->ls_flags = flags;
1363 spin_lock_init(&stats->ls_lock);
1365 /* alloc num of counter headers */
1366 LIBCFS_ALLOC(stats->ls_cnt_header,
1367 stats->ls_num * sizeof(struct lprocfs_counter_header));
1368 if (stats->ls_cnt_header == NULL)
1371 if ((flags & LPROCFS_STATS_FLAG_NOPERCPU) != 0) {
1372 /* contains only one set counters */
1373 percpusize = lprocfs_stats_counter_size(stats);
1374 LIBCFS_ALLOC_ATOMIC(stats->ls_percpu[0], percpusize);
1375 if (stats->ls_percpu[0] == NULL)
1377 stats->ls_biggest_alloc_num = 1;
1378 } else if ((flags & LPROCFS_STATS_FLAG_IRQ_SAFE) != 0) {
1379 /* alloc all percpu data, currently only obd_memory use this */
1380 for (i = 0; i < num_entry; ++i)
1381 if (lprocfs_stats_alloc_one(stats, i) < 0)
1388 lprocfs_free_stats(&stats);
1391 EXPORT_SYMBOL(lprocfs_alloc_stats);
1393 void lprocfs_free_stats(struct lprocfs_stats **statsh)
1395 struct lprocfs_stats *stats = *statsh;
1396 unsigned int num_entry;
1397 unsigned int percpusize;
1400 if (stats == NULL || stats->ls_num == 0)
1404 if (stats->ls_flags & LPROCFS_STATS_FLAG_NOPERCPU)
1407 num_entry = num_possible_cpus();
1409 percpusize = lprocfs_stats_counter_size(stats);
1410 for (i = 0; i < num_entry; i++)
1411 if (stats->ls_percpu[i] != NULL)
1412 LIBCFS_FREE(stats->ls_percpu[i], percpusize);
1413 if (stats->ls_cnt_header != NULL)
1414 LIBCFS_FREE(stats->ls_cnt_header, stats->ls_num *
1415 sizeof(struct lprocfs_counter_header));
1416 LIBCFS_FREE(stats, offsetof(typeof(*stats), ls_percpu[num_entry]));
1418 EXPORT_SYMBOL(lprocfs_free_stats);
1420 u64 lprocfs_stats_collector(struct lprocfs_stats *stats, int idx,
1421 enum lprocfs_fields_flags field)
1423 unsigned long flags = 0;
1424 unsigned int num_cpu;
1430 num_cpu = lprocfs_stats_lock(stats, LPROCFS_GET_NUM_CPU, &flags);
1431 for (i = 0; i < num_cpu; i++) {
1432 struct lprocfs_counter *cntr;
1434 if (!stats->ls_percpu[i])
1437 cntr = lprocfs_stats_counter_get(stats, i, idx);
1438 ret += lprocfs_read_helper(cntr, &stats->ls_cnt_header[idx],
1439 stats->ls_flags, field);
1441 lprocfs_stats_unlock(stats, LPROCFS_GET_NUM_CPU, &flags);
1444 EXPORT_SYMBOL(lprocfs_stats_collector);
1446 void lprocfs_clear_stats(struct lprocfs_stats *stats)
1448 struct lprocfs_counter *percpu_cntr;
1451 unsigned int num_entry;
1452 unsigned long flags = 0;
1454 num_entry = lprocfs_stats_lock(stats, LPROCFS_GET_NUM_CPU, &flags);
1456 for (i = 0; i < num_entry; i++) {
1457 if (stats->ls_percpu[i] == NULL)
1459 for (j = 0; j < stats->ls_num; j++) {
1460 percpu_cntr = lprocfs_stats_counter_get(stats, i, j);
1461 percpu_cntr->lc_count = 0;
1462 percpu_cntr->lc_min = LC_MIN_INIT;
1463 percpu_cntr->lc_max = 0;
1464 percpu_cntr->lc_sumsquare = 0;
1465 percpu_cntr->lc_sum = 0;
1466 if (stats->ls_flags & LPROCFS_STATS_FLAG_IRQ_SAFE)
1467 percpu_cntr->lc_sum_irq = 0;
1471 lprocfs_stats_unlock(stats, LPROCFS_GET_NUM_CPU, &flags);
1473 EXPORT_SYMBOL(lprocfs_clear_stats);
1475 static ssize_t lprocfs_stats_seq_write(struct file *file,
1476 const char __user *buf,
1477 size_t len, loff_t *off)
1479 struct seq_file *seq = file->private_data;
1480 struct lprocfs_stats *stats = seq->private;
1482 lprocfs_clear_stats(stats);
1487 static void *lprocfs_stats_seq_start(struct seq_file *p, loff_t *pos)
1489 struct lprocfs_stats *stats = p->private;
1491 return (*pos < stats->ls_num) ? pos : NULL;
1494 static void lprocfs_stats_seq_stop(struct seq_file *p, void *v)
1498 static void *lprocfs_stats_seq_next(struct seq_file *p, void *v, loff_t *pos)
1502 return lprocfs_stats_seq_start(p, pos);
1505 /* seq file export of one lprocfs counter */
1506 static int lprocfs_stats_seq_show(struct seq_file *p, void *v)
1508 struct lprocfs_stats *stats = p->private;
1509 struct lprocfs_counter_header *hdr;
1510 struct lprocfs_counter ctr;
1511 int idx = *(loff_t *)v;
1514 struct timespec64 now;
1516 ktime_get_real_ts64(&now);
1517 seq_printf(p, "%-25s %llu.%09lu secs.nsecs\n",
1518 "snapshot_time", (s64)now.tv_sec, now.tv_nsec);
1521 hdr = &stats->ls_cnt_header[idx];
1522 lprocfs_stats_collect(stats, idx, &ctr);
1524 if (ctr.lc_count == 0)
1527 seq_printf(p, "%-25s %lld samples [%s]", hdr->lc_name,
1528 ctr.lc_count, hdr->lc_units);
1530 if ((hdr->lc_config & LPROCFS_CNTR_AVGMINMAX) && ctr.lc_count > 0) {
1531 seq_printf(p, " %lld %lld %lld",
1532 ctr.lc_min, ctr.lc_max, ctr.lc_sum);
1533 if (hdr->lc_config & LPROCFS_CNTR_STDDEV)
1534 seq_printf(p, " %llu", ctr.lc_sumsquare);
1540 static const struct seq_operations lprocfs_stats_seq_sops = {
1541 .start = lprocfs_stats_seq_start,
1542 .stop = lprocfs_stats_seq_stop,
1543 .next = lprocfs_stats_seq_next,
1544 .show = lprocfs_stats_seq_show,
1547 static int lprocfs_stats_seq_open(struct inode *inode, struct file *file)
1549 struct seq_file *seq;
1552 rc = LPROCFS_ENTRY_CHECK(inode);
1556 rc = seq_open(file, &lprocfs_stats_seq_sops);
1559 seq = file->private_data;
1560 seq->private = inode->i_private ? inode->i_private : PDE_DATA(inode);
1564 static const struct file_operations lprocfs_stats_seq_fops = {
1565 .owner = THIS_MODULE,
1566 .open = lprocfs_stats_seq_open,
1568 .write = lprocfs_stats_seq_write,
1569 .llseek = seq_lseek,
1570 .release = lprocfs_seq_release,
1573 int ldebugfs_register_stats(struct dentry *parent, const char *name,
1574 struct lprocfs_stats *stats)
1576 struct dentry *entry;
1578 LASSERT(!IS_ERR_OR_NULL(parent));
1580 entry = debugfs_create_file(name, 0644, parent, stats,
1581 &lprocfs_stats_seq_fops);
1582 if (IS_ERR_OR_NULL(entry))
1583 return entry ? PTR_ERR(entry) : -ENOMEM;
1587 EXPORT_SYMBOL_GPL(ldebugfs_register_stats);
1589 int lprocfs_register_stats(struct proc_dir_entry *root, const char *name,
1590 struct lprocfs_stats *stats)
1592 struct proc_dir_entry *entry;
1593 LASSERT(root != NULL);
1595 entry = proc_create_data(name, 0644, root,
1596 &lprocfs_stats_seq_fops, stats);
1601 EXPORT_SYMBOL(lprocfs_register_stats);
1603 void lprocfs_counter_init(struct lprocfs_stats *stats, int index,
1604 unsigned conf, const char *name, const char *units)
1606 struct lprocfs_counter_header *header;
1607 struct lprocfs_counter *percpu_cntr;
1608 unsigned long flags = 0;
1610 unsigned int num_cpu;
1612 LASSERT(stats != NULL);
1614 header = &stats->ls_cnt_header[index];
1615 LASSERTF(header != NULL, "Failed to allocate stats header:[%d]%s/%s\n",
1616 index, name, units);
1618 header->lc_config = conf;
1619 header->lc_name = name;
1620 header->lc_units = units;
1622 num_cpu = lprocfs_stats_lock(stats, LPROCFS_GET_NUM_CPU, &flags);
1623 for (i = 0; i < num_cpu; ++i) {
1624 if (stats->ls_percpu[i] == NULL)
1626 percpu_cntr = lprocfs_stats_counter_get(stats, i, index);
1627 percpu_cntr->lc_count = 0;
1628 percpu_cntr->lc_min = LC_MIN_INIT;
1629 percpu_cntr->lc_max = 0;
1630 percpu_cntr->lc_sumsquare = 0;
1631 percpu_cntr->lc_sum = 0;
1632 if ((stats->ls_flags & LPROCFS_STATS_FLAG_IRQ_SAFE) != 0)
1633 percpu_cntr->lc_sum_irq = 0;
1635 lprocfs_stats_unlock(stats, LPROCFS_GET_NUM_CPU, &flags);
1637 EXPORT_SYMBOL(lprocfs_counter_init);
1639 /* Note that we only init md counters for ops whose offset is less
1640 * than NUM_MD_STATS. This is explained in a comment in the definition
1641 * of struct md_ops. */
1642 #define LPROCFS_MD_OP_INIT(base, stats, op) \
1644 unsigned int _idx = base + MD_COUNTER_OFFSET(op); \
1646 if (MD_COUNTER_OFFSET(op) < NUM_MD_STATS) { \
1647 LASSERT(_idx < stats->ls_num); \
1648 lprocfs_counter_init(stats, _idx, 0, #op, "reqs"); \
1652 void lprocfs_init_mps_stats(int num_private_stats, struct lprocfs_stats *stats)
1654 LPROCFS_MD_OP_INIT(num_private_stats, stats, get_root);
1655 LPROCFS_MD_OP_INIT(num_private_stats, stats, null_inode);
1656 LPROCFS_MD_OP_INIT(num_private_stats, stats, close);
1657 LPROCFS_MD_OP_INIT(num_private_stats, stats, create);
1658 LPROCFS_MD_OP_INIT(num_private_stats, stats, enqueue);
1659 LPROCFS_MD_OP_INIT(num_private_stats, stats, getattr);
1660 LPROCFS_MD_OP_INIT(num_private_stats, stats, getattr_name);
1661 LPROCFS_MD_OP_INIT(num_private_stats, stats, intent_lock);
1662 LPROCFS_MD_OP_INIT(num_private_stats, stats, link);
1663 LPROCFS_MD_OP_INIT(num_private_stats, stats, rename);
1664 LPROCFS_MD_OP_INIT(num_private_stats, stats, setattr);
1665 LPROCFS_MD_OP_INIT(num_private_stats, stats, fsync);
1666 LPROCFS_MD_OP_INIT(num_private_stats, stats, read_page);
1667 LPROCFS_MD_OP_INIT(num_private_stats, stats, unlink);
1668 LPROCFS_MD_OP_INIT(num_private_stats, stats, setxattr);
1669 LPROCFS_MD_OP_INIT(num_private_stats, stats, getxattr);
1670 LPROCFS_MD_OP_INIT(num_private_stats, stats, init_ea_size);
1671 LPROCFS_MD_OP_INIT(num_private_stats, stats, get_lustre_md);
1672 LPROCFS_MD_OP_INIT(num_private_stats, stats, free_lustre_md);
1673 LPROCFS_MD_OP_INIT(num_private_stats, stats, merge_attr);
1674 LPROCFS_MD_OP_INIT(num_private_stats, stats, set_open_replay_data);
1675 LPROCFS_MD_OP_INIT(num_private_stats, stats, clear_open_replay_data);
1676 LPROCFS_MD_OP_INIT(num_private_stats, stats, set_lock_data);
1677 LPROCFS_MD_OP_INIT(num_private_stats, stats, lock_match);
1678 LPROCFS_MD_OP_INIT(num_private_stats, stats, cancel_unused);
1679 LPROCFS_MD_OP_INIT(num_private_stats, stats, intent_getattr_async);
1680 LPROCFS_MD_OP_INIT(num_private_stats, stats, revalidate_lock);
1683 int lprocfs_alloc_md_stats(struct obd_device *obd,
1684 unsigned int num_private_stats)
1686 struct lprocfs_stats *stats;
1687 unsigned int num_stats;
1690 CLASSERT(offsetof(struct md_ops, MD_STATS_FIRST_OP) == 0);
1691 CLASSERT(_MD_COUNTER_OFFSET(MD_STATS_FIRST_OP) == 0);
1692 CLASSERT(_MD_COUNTER_OFFSET(MD_STATS_LAST_OP) > 0);
1694 /* TODO Ensure that this function is only used where
1695 * appropriate by adding an assertion to the effect that
1696 * obd->obd_type->typ_md_ops is not NULL. We can't do this now
1697 * because mdt_procfs_init() uses this function to allocate
1698 * the stats backing /proc/fs/lustre/mdt/.../md_stats but the
1699 * mdt layer does not use the md_ops interface. This is
1700 * confusing and a waste of memory. See LU-2484.
1702 LASSERT(obd->obd_proc_entry != NULL);
1703 LASSERT(obd->obd_md_stats == NULL);
1704 LASSERT(obd->obd_md_cntr_base == 0);
1706 num_stats = NUM_MD_STATS + num_private_stats;
1707 stats = lprocfs_alloc_stats(num_stats, 0);
1711 lprocfs_init_mps_stats(num_private_stats, stats);
1713 for (i = num_private_stats; i < num_stats; i++) {
1714 if (stats->ls_cnt_header[i].lc_name == NULL) {
1715 CERROR("Missing md_stat initializer md_op "
1716 "operation at offset %d. Aborting.\n",
1717 i - num_private_stats);
1722 rc = lprocfs_register_stats(obd->obd_proc_entry, "md_stats", stats);
1724 lprocfs_free_stats(&stats);
1726 obd->obd_md_stats = stats;
1727 obd->obd_md_cntr_base = num_private_stats;
1732 EXPORT_SYMBOL(lprocfs_alloc_md_stats);
1734 void lprocfs_free_md_stats(struct obd_device *obd)
1736 struct lprocfs_stats *stats = obd->obd_md_stats;
1738 if (stats != NULL) {
1739 obd->obd_md_stats = NULL;
1740 obd->obd_md_cntr_base = 0;
1741 lprocfs_free_stats(&stats);
1744 EXPORT_SYMBOL(lprocfs_free_md_stats);
1746 void lprocfs_init_ldlm_stats(struct lprocfs_stats *ldlm_stats)
1748 lprocfs_counter_init(ldlm_stats,
1749 LDLM_ENQUEUE - LDLM_FIRST_OPC,
1750 0, "ldlm_enqueue", "reqs");
1751 lprocfs_counter_init(ldlm_stats,
1752 LDLM_CONVERT - LDLM_FIRST_OPC,
1753 0, "ldlm_convert", "reqs");
1754 lprocfs_counter_init(ldlm_stats,
1755 LDLM_CANCEL - LDLM_FIRST_OPC,
1756 0, "ldlm_cancel", "reqs");
1757 lprocfs_counter_init(ldlm_stats,
1758 LDLM_BL_CALLBACK - LDLM_FIRST_OPC,
1759 0, "ldlm_bl_callback", "reqs");
1760 lprocfs_counter_init(ldlm_stats,
1761 LDLM_CP_CALLBACK - LDLM_FIRST_OPC,
1762 0, "ldlm_cp_callback", "reqs");
1763 lprocfs_counter_init(ldlm_stats,
1764 LDLM_GL_CALLBACK - LDLM_FIRST_OPC,
1765 0, "ldlm_gl_callback", "reqs");
1767 EXPORT_SYMBOL(lprocfs_init_ldlm_stats);
1769 __s64 lprocfs_read_helper(struct lprocfs_counter *lc,
1770 struct lprocfs_counter_header *header,
1771 enum lprocfs_stats_flags flags,
1772 enum lprocfs_fields_flags field)
1776 if (lc == NULL || header == NULL)
1780 case LPROCFS_FIELDS_FLAGS_CONFIG:
1781 ret = header->lc_config;
1783 case LPROCFS_FIELDS_FLAGS_SUM:
1785 if ((flags & LPROCFS_STATS_FLAG_IRQ_SAFE) != 0)
1786 ret += lc->lc_sum_irq;
1788 case LPROCFS_FIELDS_FLAGS_MIN:
1791 case LPROCFS_FIELDS_FLAGS_MAX:
1794 case LPROCFS_FIELDS_FLAGS_AVG:
1795 ret = (lc->lc_max - lc->lc_min) / 2;
1797 case LPROCFS_FIELDS_FLAGS_SUMSQUARE:
1798 ret = lc->lc_sumsquare;
1800 case LPROCFS_FIELDS_FLAGS_COUNT:
1808 EXPORT_SYMBOL(lprocfs_read_helper);
1810 int lprocfs_read_frac_helper(char *buffer, unsigned long count, long val,
1813 long decimal_val, frac_val;
1819 decimal_val = val / mult;
1820 prtn = snprintf(buffer, count, "%ld", decimal_val);
1821 frac_val = val % mult;
1823 if (prtn < (count - 4) && frac_val > 0) {
1825 int i, temp_mult = 1, frac_bits = 0;
1827 temp_frac = frac_val * 10;
1828 buffer[prtn++] = '.';
1829 while (frac_bits < 2 && (temp_frac / mult) < 1 ) {
1830 /* only reserved 2 bits fraction */
1831 buffer[prtn++] ='0';
1836 * Need to think these cases :
1837 * 1. #echo x.00 > /proc/xxx output result : x
1838 * 2. #echo x.0x > /proc/xxx output result : x.0x
1839 * 3. #echo x.x0 > /proc/xxx output result : x.x
1840 * 4. #echo x.xx > /proc/xxx output result : x.xx
1841 * Only reserved 2 bits fraction.
1843 for (i = 0; i < (5 - prtn); i++)
1846 frac_bits = min((int)count - prtn, 3 - frac_bits);
1847 prtn += snprintf(buffer + prtn, frac_bits, "%ld",
1848 frac_val * temp_mult / mult);
1851 while(buffer[prtn] < '1' || buffer[prtn] > '9') {
1853 if (buffer[prtn] == '.') {
1860 buffer[prtn++] ='\n';
1863 EXPORT_SYMBOL(lprocfs_read_frac_helper);
1865 int lprocfs_seq_read_frac_helper(struct seq_file *m, long val, int mult)
1867 long decimal_val, frac_val;
1869 decimal_val = val / mult;
1870 seq_printf(m, "%ld", decimal_val);
1871 frac_val = val % mult;
1878 /* Three cases: x0, xx, 0x */
1879 if ((frac_val % 10) != 0)
1880 seq_printf(m, ".%ld", frac_val);
1882 seq_printf(m, ".%ld", frac_val / 10);
1885 seq_printf(m, "\n");
1888 EXPORT_SYMBOL(lprocfs_seq_read_frac_helper);
1890 /* Obtains the conversion factor for the unit specified */
1891 static int get_mult(char unit, __u64 *mult)
1896 /* peta, tera, giga, mega, and kilo */
1913 /* some tests expect % to be accepted */
1927 * Ensures the numeric string is valid. The function provides the final
1928 * multiplier in the case a unit exists at the end of the string. It also
1929 * locates the start of the whole and fractional parts (if any). This
1930 * function modifies the string so kstrtoull can be used to parse both
1931 * the whole and fraction portions. This function also figures out
1932 * the base of the number.
1934 static int preprocess_numeric_str(char *buffer, __u64 *mult, __u64 def_mult,
1935 bool allow_units, char **whole, char **frac,
1938 bool hit_decimal = false;
1939 bool hit_unit = false;
1947 /* a hex string if it starts with "0x" */
1948 if (buffer[0] == '0' && tolower(buffer[1]) == 'x') {
1956 /* allow for a single new line before the null terminator */
1957 if (*buffer == '\n') {
1967 /* any chars after our unit indicates a malformed string */
1971 /* ensure we only hit one decimal */
1972 if (*buffer == '.') {
1976 /* if past start, there's a whole part */
1977 if (start != buffer)
1983 } else if (!isdigit(*buffer) &&
1984 !(*base == 16 && isxdigit(*buffer))) {
1986 /* if we allow units, attempt to get mult */
1988 rc = get_mult(*buffer, mult);
1992 /* string stops here, but keep processing */
2004 /* hit a decimal, make sure there's a fractional part */
2010 /* didn't hit a decimal, but may have a whole part */
2011 if (start != buffer && *start)
2015 /* malformed string if we didn't get anything */
2016 if (!*frac && !*whole)
2023 * Parses a numeric string which can contain a whole and fraction portion
2024 * into a __u64. Accepts a multiplier to apply to the value parsed. Also
2025 * allows the string to have a unit at the end. The function handles
2026 * wrapping of the final unsigned value.
2028 static int str_to_u64_parse(char *buffer, unsigned long count,
2029 __u64 *val, __u64 def_mult, bool allow_units)
2033 unsigned int frac_d = 1;
2034 __u64 wrap_indicator = ULLONG_MAX;
2039 unsigned int base = 10;
2041 rc = preprocess_numeric_str(buffer, &mult, def_mult, allow_units,
2042 &strwhole, &strfrac, &base);
2052 /* the multiplier limits how large the value can be */
2053 wrap_indicator /= mult;
2056 rc = kstrtoull(strwhole, base, &whole);
2060 if (whole > wrap_indicator)
2067 if (strlen(strfrac) > 10)
2070 rc = kstrtoull(strfrac, base, &frac);
2074 /* determine power of fractional portion */
2080 /* fractional portion is too large to perform calculation */
2081 if (frac > wrap_indicator)
2085 do_div(frac, frac_d);
2088 /* check that the sum of whole and fraction fits in u64 */
2089 if (whole > (ULLONG_MAX - frac))
2092 *val = whole + frac;
2098 * This function parses numeric/hex strings into __s64. It accepts a multiplier
2099 * which will apply to the value parsed. It also can allow the string to
2100 * have a unit as the last character. The function handles overflow/underflow
2101 * of the signed integer.
2103 static int str_to_s64_internal(const char __user *buffer, unsigned long count,
2104 __s64 *val, __u64 def_mult, bool allow_units)
2108 unsigned int offset = 0;
2109 int signed sign = 1;
2110 __u64 max = LLONG_MAX;
2113 if (count > (sizeof(kernbuf) - 1))
2116 if (copy_from_user(kernbuf, buffer, count))
2119 kernbuf[count] = '\0';
2121 /* keep track of our sign */
2122 if (*kernbuf == '-') {
2125 /* equivalent to max = -LLONG_MIN, avoids overflow */
2129 rc = str_to_u64_parse(kernbuf + offset, count - offset,
2130 &tmp, def_mult, allow_units);
2134 /* check for overflow/underflow */
2138 *val = (__s64)tmp * sign;
2144 * Convert a user string into a signed 64 bit number. This function produces
2145 * an error when the value parsed from the string times multiplier underflows or
2146 * overflows. This function only accepts strings that contains digits, an
2147 * optional decimal, and a char representing a unit at the end. If a unit is
2148 * specified in the string, the multiplier provided by the caller is ignored.
2149 * This function can also accept hexadecimal strings which are prefixed with
2152 * \param[in] buffer string consisting of numbers, a decimal, and a unit
2153 * \param[in] count buffer length
2154 * \param[in] val if successful, the value represented by the string
2155 * \param[in] defunit default unit if string doesn't contain one
2157 * \retval 0 on success
2158 * \retval negative number on error
2160 int lprocfs_str_with_units_to_s64(const char __user *buffer,
2161 unsigned long count, __s64 *val, char defunit)
2166 if (defunit != '1') {
2167 rc = get_mult(defunit, &mult);
2172 return str_to_s64_internal(buffer, count, val, mult, true);
2174 EXPORT_SYMBOL(lprocfs_str_with_units_to_s64);
2176 char *lprocfs_strnstr(const char *s1, const char *s2, size_t len)
2185 if (!memcmp(s1, s2, l2))
2191 EXPORT_SYMBOL(lprocfs_strnstr);
2194 * Find the string \a name in the input \a buffer, and return a pointer to the
2195 * value immediately following \a name, reducing \a count appropriately.
2196 * If \a name is not found the original \a buffer is returned.
2198 char *lprocfs_find_named_value(const char *buffer, const char *name,
2202 size_t buflen = *count;
2204 /* there is no strnstr() in rhel5 and ubuntu kernels */
2205 val = lprocfs_strnstr(buffer, name, buflen);
2207 return (char *)buffer;
2209 val += strlen(name); /* skip prefix */
2210 while (val < buffer + buflen && isspace(*val)) /* skip separator */
2214 while (val < buffer + buflen && isalnum(*val)) {
2219 return val - *count;
2221 EXPORT_SYMBOL(lprocfs_find_named_value);
2223 int ldebugfs_seq_create(struct dentry *parent, const char *name, umode_t mode,
2224 const struct file_operations *seq_fops, void *data)
2226 struct dentry *entry;
2228 /* Disallow secretly (un)writable entries. */
2229 LASSERT((!seq_fops->write) == (!(mode & 0222)));
2231 entry = debugfs_create_file(name, mode, parent, data, seq_fops);
2232 if (IS_ERR_OR_NULL(entry))
2233 return entry ? PTR_ERR(entry) : -ENOMEM;
2237 EXPORT_SYMBOL_GPL(ldebugfs_seq_create);
2239 int lprocfs_seq_create(struct proc_dir_entry *parent,
2242 const struct file_operations *seq_fops,
2245 struct proc_dir_entry *entry;
2248 /* Disallow secretly (un)writable entries. */
2249 LASSERT((seq_fops->write == NULL) == ((mode & 0222) == 0));
2251 entry = proc_create_data(name, mode, parent, seq_fops, data);
2258 EXPORT_SYMBOL(lprocfs_seq_create);
2260 int lprocfs_obd_seq_create(struct obd_device *dev,
2263 const struct file_operations *seq_fops,
2266 return (lprocfs_seq_create(dev->obd_proc_entry, name,
2267 mode, seq_fops, data));
2269 EXPORT_SYMBOL(lprocfs_obd_seq_create);
2271 void lprocfs_oh_tally(struct obd_histogram *oh, unsigned int value)
2273 if (value >= OBD_HIST_MAX)
2274 value = OBD_HIST_MAX - 1;
2276 spin_lock(&oh->oh_lock);
2277 oh->oh_buckets[value]++;
2278 spin_unlock(&oh->oh_lock);
2280 EXPORT_SYMBOL(lprocfs_oh_tally);
2282 void lprocfs_oh_tally_log2(struct obd_histogram *oh, unsigned int value)
2284 unsigned int val = 0;
2286 if (likely(value != 0))
2287 val = min(fls(value - 1), OBD_HIST_MAX);
2289 lprocfs_oh_tally(oh, val);
2291 EXPORT_SYMBOL(lprocfs_oh_tally_log2);
2293 unsigned long lprocfs_oh_sum(struct obd_histogram *oh)
2295 unsigned long ret = 0;
2298 for (i = 0; i < OBD_HIST_MAX; i++)
2299 ret += oh->oh_buckets[i];
2302 EXPORT_SYMBOL(lprocfs_oh_sum);
2304 void lprocfs_oh_clear(struct obd_histogram *oh)
2306 spin_lock(&oh->oh_lock);
2307 memset(oh->oh_buckets, 0, sizeof(oh->oh_buckets));
2308 spin_unlock(&oh->oh_lock);
2310 EXPORT_SYMBOL(lprocfs_oh_clear);
2312 ssize_t lustre_attr_show(struct kobject *kobj,
2313 struct attribute *attr, char *buf)
2315 struct lustre_attr *a = container_of(attr, struct lustre_attr, attr);
2317 return a->show ? a->show(kobj, attr, buf) : 0;
2319 EXPORT_SYMBOL_GPL(lustre_attr_show);
2321 ssize_t lustre_attr_store(struct kobject *kobj, struct attribute *attr,
2322 const char *buf, size_t len)
2324 struct lustre_attr *a = container_of(attr, struct lustre_attr, attr);
2326 return a->store ? a->store(kobj, attr, buf, len) : len;
2328 EXPORT_SYMBOL_GPL(lustre_attr_store);
2330 const struct sysfs_ops lustre_sysfs_ops = {
2331 .show = lustre_attr_show,
2332 .store = lustre_attr_store,
2334 EXPORT_SYMBOL_GPL(lustre_sysfs_ops);
2336 int lprocfs_obd_max_pages_per_rpc_seq_show(struct seq_file *m, void *data)
2338 struct obd_device *dev = data;
2339 struct client_obd *cli = &dev->u.cli;
2341 spin_lock(&cli->cl_loi_list_lock);
2342 seq_printf(m, "%d\n", cli->cl_max_pages_per_rpc);
2343 spin_unlock(&cli->cl_loi_list_lock);
2346 EXPORT_SYMBOL(lprocfs_obd_max_pages_per_rpc_seq_show);
2348 ssize_t lprocfs_obd_max_pages_per_rpc_seq_write(struct file *file,
2349 const char __user *buffer,
2350 size_t count, loff_t *off)
2352 struct obd_device *dev =
2353 ((struct seq_file *)file->private_data)->private;
2354 struct client_obd *cli = &dev->u.cli;
2355 struct obd_connect_data *ocd = &cli->cl_import->imp_connect_data;
2359 rc = lprocfs_str_with_units_to_s64(buffer, count, &val, '1');
2365 /* if the max_pages is specified in bytes, convert to pages */
2366 if (val >= ONE_MB_BRW_SIZE)
2369 LPROCFS_CLIMP_CHECK(dev);
2371 chunk_mask = ~((1 << (cli->cl_chunkbits - PAGE_SHIFT)) - 1);
2372 /* max_pages_per_rpc must be chunk aligned */
2373 val = (val + ~chunk_mask) & chunk_mask;
2374 if (val == 0 || (ocd->ocd_brw_size != 0 &&
2375 val > ocd->ocd_brw_size >> PAGE_SHIFT)) {
2376 LPROCFS_CLIMP_EXIT(dev);
2379 spin_lock(&cli->cl_loi_list_lock);
2380 cli->cl_max_pages_per_rpc = val;
2381 client_adjust_max_dirty(cli);
2382 spin_unlock(&cli->cl_loi_list_lock);
2384 LPROCFS_CLIMP_EXIT(dev);
2387 EXPORT_SYMBOL(lprocfs_obd_max_pages_per_rpc_seq_write);
2389 int lprocfs_obd_short_io_bytes_seq_show(struct seq_file *m, void *data)
2391 struct obd_device *dev = data;
2392 struct client_obd *cli = &dev->u.cli;
2394 spin_lock(&cli->cl_loi_list_lock);
2395 seq_printf(m, "%d\n", cli->cl_short_io_bytes);
2396 spin_unlock(&cli->cl_loi_list_lock);
2399 EXPORT_SYMBOL(lprocfs_obd_short_io_bytes_seq_show);
2401 /* Used to catch people who think they're specifying pages. */
2402 #define MIN_SHORT_IO_BYTES 64
2404 ssize_t lprocfs_obd_short_io_bytes_seq_write(struct file *file,
2405 const char __user *buffer,
2406 size_t count, loff_t *off)
2408 struct obd_device *dev = ((struct seq_file *)
2409 file->private_data)->private;
2410 struct client_obd *cli = &dev->u.cli;
2414 LPROCFS_CLIMP_CHECK(dev);
2416 rc = kstrtoint_from_user(buffer, count, 0, &val);
2420 if (val < MIN_SHORT_IO_BYTES || val > OBD_MAX_SHORT_IO_BYTES)
2421 GOTO(out, rc = -ERANGE);
2425 spin_lock(&cli->cl_loi_list_lock);
2426 if (val > (cli->cl_max_pages_per_rpc << PAGE_SHIFT))
2429 cli->cl_short_io_bytes = val;
2430 spin_unlock(&cli->cl_loi_list_lock);
2433 LPROCFS_CLIMP_EXIT(dev);
2436 EXPORT_SYMBOL(lprocfs_obd_short_io_bytes_seq_write);
2438 int lprocfs_wr_root_squash(const char __user *buffer, unsigned long count,
2439 struct root_squash_info *squash, char *name)
2442 char kernbuf[64], *tmp, *errmsg;
2443 unsigned long uid, gid;
2446 if (count >= sizeof(kernbuf)) {
2447 errmsg = "string too long";
2448 GOTO(failed_noprint, rc = -EINVAL);
2450 if (copy_from_user(kernbuf, buffer, count)) {
2451 errmsg = "bad address";
2452 GOTO(failed_noprint, rc = -EFAULT);
2454 kernbuf[count] = '\0';
2456 /* look for uid gid separator */
2457 tmp = strchr(kernbuf, ':');
2459 errmsg = "needs uid:gid format";
2460 GOTO(failed, rc = -EINVAL);
2466 if (kstrtoul(kernbuf, 0, &uid) != 0) {
2468 GOTO(failed, rc = -EINVAL);
2472 if (kstrtoul(tmp, 0, &gid) != 0) {
2474 GOTO(failed, rc = -EINVAL);
2477 squash->rsi_uid = uid;
2478 squash->rsi_gid = gid;
2480 LCONSOLE_INFO("%s: root_squash is set to %u:%u\n",
2481 name, squash->rsi_uid, squash->rsi_gid);
2489 CWARN("%s: failed to set root_squash to \"%s\", %s, rc = %d\n",
2490 name, kernbuf, errmsg, rc);
2493 CWARN("%s: failed to set root_squash due to %s, rc = %d\n",
2497 EXPORT_SYMBOL(lprocfs_wr_root_squash);
2500 int lprocfs_wr_nosquash_nids(const char __user *buffer, unsigned long count,
2501 struct root_squash_info *squash, char *name)
2504 char *kernbuf = NULL;
2506 struct list_head tmp;
2511 errmsg = "string too long";
2512 GOTO(failed, rc = -EINVAL);
2515 OBD_ALLOC(kernbuf, count + 1);
2516 if (kernbuf == NULL) {
2517 errmsg = "no memory";
2518 GOTO(failed, rc = -ENOMEM);
2520 if (copy_from_user(kernbuf, buffer, count)) {
2521 errmsg = "bad address";
2522 GOTO(failed, rc = -EFAULT);
2524 kernbuf[count] = '\0';
2526 if (count > 0 && kernbuf[count - 1] == '\n')
2529 if ((len == 4 && strncmp(kernbuf, "NONE", len) == 0) ||
2530 (len == 5 && strncmp(kernbuf, "clear", len) == 0)) {
2531 /* empty string is special case */
2532 down_write(&squash->rsi_sem);
2533 if (!list_empty(&squash->rsi_nosquash_nids))
2534 cfs_free_nidlist(&squash->rsi_nosquash_nids);
2535 up_write(&squash->rsi_sem);
2536 LCONSOLE_INFO("%s: nosquash_nids is cleared\n", name);
2537 OBD_FREE(kernbuf, count + 1);
2541 INIT_LIST_HEAD(&tmp);
2542 if (cfs_parse_nidlist(kernbuf, count, &tmp) <= 0) {
2543 errmsg = "can't parse";
2544 GOTO(failed, rc = -EINVAL);
2546 LCONSOLE_INFO("%s: nosquash_nids set to %s\n",
2548 OBD_FREE(kernbuf, count + 1);
2551 down_write(&squash->rsi_sem);
2552 if (!list_empty(&squash->rsi_nosquash_nids))
2553 cfs_free_nidlist(&squash->rsi_nosquash_nids);
2554 list_splice(&tmp, &squash->rsi_nosquash_nids);
2555 up_write(&squash->rsi_sem);
2561 CWARN("%s: failed to set nosquash_nids to \"%s\", %s rc = %d\n",
2562 name, kernbuf, errmsg, rc);
2563 OBD_FREE(kernbuf, count + 1);
2565 CWARN("%s: failed to set nosquash_nids due to %s rc = %d\n",
2570 EXPORT_SYMBOL(lprocfs_wr_nosquash_nids);
2572 #endif /* CONFIG_PROC_FS*/