4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 only,
8 * as published by the Free Software Foundation.
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License version 2 for more details (a copy is included
14 * in the LICENSE file that accompanied this code).
16 * You should have received a copy of the GNU General Public License
17 * version 2 along with this program; If not, see
18 * http://www.gnu.org/licenses/gpl-2.0.html
23 * Copyright (c) 2002, 2010, Oracle and/or its affiliates. All rights reserved.
24 * Use is subject to license terms.
26 * Copyright (c) 2011, 2017, Intel Corporation.
29 * This file is part of Lustre, http://www.lustre.org/
30 * Lustre is a trademark of Sun Microsystems, Inc.
32 * lustre/obdclass/lprocfs_status.c
34 * Author: Hariharan Thantry <thantry@users.sourceforge.net>
37 #define DEBUG_SUBSYSTEM S_CLASS
39 #include <obd_class.h>
40 #include <lprocfs_status.h>
44 static int lprocfs_no_percpu_stats = 0;
45 module_param(lprocfs_no_percpu_stats, int, 0644);
46 MODULE_PARM_DESC(lprocfs_no_percpu_stats, "Do not alloc percpu data for lprocfs stats");
48 #define MAX_STRING_SIZE 128
50 int lprocfs_single_release(struct inode *inode, struct file *file)
52 return single_release(inode, file);
54 EXPORT_SYMBOL(lprocfs_single_release);
56 int lprocfs_seq_release(struct inode *inode, struct file *file)
58 return seq_release(inode, file);
60 EXPORT_SYMBOL(lprocfs_seq_release);
62 struct dentry *ldebugfs_add_simple(struct dentry *root,
63 char *name, void *data,
64 const struct file_operations *fops)
69 if (!root || !name || !fops)
70 return ERR_PTR(-EINVAL);
76 entry = debugfs_create_file(name, mode, root, data, fops);
77 if (IS_ERR_OR_NULL(entry)) {
78 CERROR("LprocFS: No memory to create <debugfs> entry %s", name);
79 return entry ?: ERR_PTR(-ENOMEM);
83 EXPORT_SYMBOL(ldebugfs_add_simple);
85 struct proc_dir_entry *
86 lprocfs_add_simple(struct proc_dir_entry *root, char *name,
87 void *data, const struct file_operations *fops)
89 struct proc_dir_entry *proc;
92 if (!root || !name || !fops)
93 return ERR_PTR(-EINVAL);
99 proc = proc_create_data(name, mode, root, fops, data);
101 CERROR("LprocFS: No memory to create /proc entry %s\n",
103 return ERR_PTR(-ENOMEM);
107 EXPORT_SYMBOL(lprocfs_add_simple);
109 struct proc_dir_entry *lprocfs_add_symlink(const char *name,
110 struct proc_dir_entry *parent,
111 const char *format, ...)
113 struct proc_dir_entry *entry;
117 if (!parent || !format)
120 OBD_ALLOC_WAIT(dest, MAX_STRING_SIZE + 1);
124 va_start(ap, format);
125 vsnprintf(dest, MAX_STRING_SIZE, format, ap);
128 entry = proc_symlink(name, parent, dest);
130 CERROR("LprocFS: Could not create symbolic link from "
131 "%s to %s\n", name, dest);
133 OBD_FREE(dest, MAX_STRING_SIZE + 1);
136 EXPORT_SYMBOL(lprocfs_add_symlink);
138 static const struct file_operations lprocfs_generic_fops = { };
140 int ldebugfs_add_vars(struct dentry *parent, struct lprocfs_vars *list,
143 if (IS_ERR_OR_NULL(parent) || IS_ERR_OR_NULL(list))
147 struct dentry *entry;
150 if (list->proc_mode != 0000) {
151 mode = list->proc_mode;
152 } else if (list->fops) {
153 if (list->fops->read)
155 if (list->fops->write)
158 entry = debugfs_create_file(list->name, mode, parent,
160 list->fops ? : &lprocfs_generic_fops);
161 if (IS_ERR_OR_NULL(entry))
162 return entry ? PTR_ERR(entry) : -ENOMEM;
167 EXPORT_SYMBOL_GPL(ldebugfs_add_vars);
172 * \param root [in] The parent proc entry on which new entry will be added.
173 * \param list [in] Array of proc entries to be added.
174 * \param data [in] The argument to be passed when entries read/write routines
175 * are called through /proc file.
177 * \retval 0 on success
181 lprocfs_add_vars(struct proc_dir_entry *root, struct lprocfs_vars *list,
188 struct proc_dir_entry *proc;
191 if (list->proc_mode != 0000) {
192 mode = list->proc_mode;
193 } else if (list->fops) {
194 if (list->fops->read)
196 if (list->fops->write)
199 proc = proc_create_data(list->name, mode, root,
200 list->fops ?: &lprocfs_generic_fops,
208 EXPORT_SYMBOL(lprocfs_add_vars);
210 void ldebugfs_remove(struct dentry **entryp)
212 debugfs_remove_recursive(*entryp);
215 EXPORT_SYMBOL_GPL(ldebugfs_remove);
217 #ifndef HAVE_REMOVE_PROC_SUBTREE
218 /* for b=10866, global variable */
219 DECLARE_RWSEM(_lprocfs_lock);
220 EXPORT_SYMBOL(_lprocfs_lock);
222 static void lprocfs_remove_nolock(struct proc_dir_entry **proot)
224 struct proc_dir_entry *root = *proot;
225 struct proc_dir_entry *temp = root;
226 struct proc_dir_entry *rm_entry;
227 struct proc_dir_entry *parent;
230 if (!root || IS_ERR(root))
233 parent = root->parent;
234 LASSERT(parent != NULL);
244 * Memory corruption once caused this to fail, and
245 * without this LASSERT we would loop here forever.
247 LASSERTF(strlen(rm_entry->name) == rm_entry->namelen,
248 "0x%p %s/%s len %d\n", rm_entry, temp->name,
249 rm_entry->name, (int)strlen(rm_entry->name));
251 remove_proc_entry(rm_entry->name, temp);
257 int remove_proc_subtree(const char *name, struct proc_dir_entry *parent)
259 struct proc_dir_entry *t = NULL;
260 struct proc_dir_entry **p;
263 LASSERT(parent != NULL);
266 down_write(&_lprocfs_lock);
267 /* lookup target name */
268 for (p = &parent->subdir; *p; p = &(*p)->next) {
269 if ((*p)->namelen != len)
271 if (memcmp(name, (*p)->name, len))
278 /* verify it's empty: do not count "num_refs" */
279 for (p = &t->subdir; *p; p = &(*p)->next) {
280 if ((*p)->namelen != strlen("num_refs")) {
284 if (memcmp("num_refs", (*p)->name,
285 strlen("num_refs"))) {
293 lprocfs_remove_nolock(&t);
295 up_write(&_lprocfs_lock);
298 #endif /* !HAVE_REMOVE_PROC_SUBTREE */
300 #ifndef HAVE_PROC_REMOVE
301 void proc_remove(struct proc_dir_entry *de)
303 #ifndef HAVE_REMOVE_PROC_SUBTREE
304 down_write(&_lprocfs_lock); /* search vs remove race */
305 lprocfs_remove_nolock(&de);
306 up_write(&_lprocfs_lock);
309 remove_proc_subtree(de->name, de->parent);
314 void lprocfs_remove(struct proc_dir_entry **rooth)
319 EXPORT_SYMBOL(lprocfs_remove);
321 void lprocfs_remove_proc_entry(const char *name, struct proc_dir_entry *parent)
323 LASSERT(parent != NULL);
324 remove_proc_entry(name, parent);
326 EXPORT_SYMBOL(lprocfs_remove_proc_entry);
328 struct dentry *ldebugfs_register(const char *name, struct dentry *parent,
329 struct lprocfs_vars *list, void *data)
331 struct dentry *entry;
333 entry = debugfs_create_dir(name, parent);
334 if (IS_ERR_OR_NULL(entry)) {
335 entry = entry ?: ERR_PTR(-ENOMEM);
339 if (!IS_ERR_OR_NULL(list)) {
342 rc = ldebugfs_add_vars(entry, list, data);
344 debugfs_remove(entry);
351 EXPORT_SYMBOL_GPL(ldebugfs_register);
353 struct proc_dir_entry *
354 lprocfs_register(const char *name, struct proc_dir_entry *parent,
355 struct lprocfs_vars *list, void *data)
357 struct proc_dir_entry *newchild;
359 newchild = proc_mkdir(name, parent);
361 return ERR_PTR(-ENOMEM);
364 int rc = lprocfs_add_vars(newchild, list, data);
366 lprocfs_remove(&newchild);
372 EXPORT_SYMBOL(lprocfs_register);
374 /* Generic callbacks */
375 int lprocfs_uuid_seq_show(struct seq_file *m, void *data)
377 struct obd_device *obd = data;
379 LASSERT(obd != NULL);
380 seq_printf(m, "%s\n", obd->obd_uuid.uuid);
383 EXPORT_SYMBOL(lprocfs_uuid_seq_show);
385 static ssize_t uuid_show(struct kobject *kobj, struct attribute *attr,
388 struct obd_device *obd = container_of(kobj, struct obd_device,
391 return sprintf(buf, "%s\n", obd->obd_uuid.uuid);
393 LUSTRE_RO_ATTR(uuid);
395 static ssize_t blocksize_show(struct kobject *kobj, struct attribute *attr,
398 struct obd_device *obd = container_of(kobj, struct obd_device,
400 struct obd_statfs osfs;
403 rc = obd_statfs(NULL, obd->obd_self_export, &osfs,
404 ktime_get_seconds() - OBD_STATFS_CACHE_SECONDS,
407 return sprintf(buf, "%u\n", osfs.os_bsize);
411 LUSTRE_RO_ATTR(blocksize);
413 static ssize_t kbytestotal_show(struct kobject *kobj, struct attribute *attr,
416 struct obd_device *obd = container_of(kobj, struct obd_device,
418 struct obd_statfs osfs;
421 rc = obd_statfs(NULL, obd->obd_self_export, &osfs,
422 ktime_get_seconds() - OBD_STATFS_CACHE_SECONDS,
425 u32 blk_size = osfs.os_bsize >> 10;
426 u64 result = osfs.os_blocks;
428 while (blk_size >>= 1)
431 return sprintf(buf, "%llu\n", result);
436 LUSTRE_RO_ATTR(kbytestotal);
438 static ssize_t kbytesfree_show(struct kobject *kobj, struct attribute *attr,
441 struct obd_device *obd = container_of(kobj, struct obd_device,
443 struct obd_statfs osfs;
446 rc = obd_statfs(NULL, obd->obd_self_export, &osfs,
447 ktime_get_seconds() - OBD_STATFS_CACHE_SECONDS,
450 u32 blk_size = osfs.os_bsize >> 10;
451 u64 result = osfs.os_bfree;
453 while (blk_size >>= 1)
456 return sprintf(buf, "%llu\n", result);
461 LUSTRE_RO_ATTR(kbytesfree);
463 static ssize_t kbytesavail_show(struct kobject *kobj, struct attribute *attr,
466 struct obd_device *obd = container_of(kobj, struct obd_device,
468 struct obd_statfs osfs;
471 rc = obd_statfs(NULL, obd->obd_self_export, &osfs,
472 ktime_get_seconds() - OBD_STATFS_CACHE_SECONDS,
475 u32 blk_size = osfs.os_bsize >> 10;
476 u64 result = osfs.os_bavail;
478 while (blk_size >>= 1)
481 return sprintf(buf, "%llu\n", result);
486 LUSTRE_RO_ATTR(kbytesavail);
488 static ssize_t filestotal_show(struct kobject *kobj, struct attribute *attr,
491 struct obd_device *obd = container_of(kobj, struct obd_device,
493 struct obd_statfs osfs;
496 rc = obd_statfs(NULL, obd->obd_self_export, &osfs,
497 ktime_get_seconds() - OBD_STATFS_CACHE_SECONDS,
500 return sprintf(buf, "%llu\n", osfs.os_files);
504 LUSTRE_RO_ATTR(filestotal);
506 static ssize_t filesfree_show(struct kobject *kobj, struct attribute *attr,
509 struct obd_device *obd = container_of(kobj, struct obd_device,
511 struct obd_statfs osfs;
514 rc = obd_statfs(NULL, obd->obd_self_export, &osfs,
515 ktime_get_seconds() - OBD_STATFS_CACHE_SECONDS,
518 return sprintf(buf, "%llu\n", osfs.os_ffree);
522 LUSTRE_RO_ATTR(filesfree);
524 ssize_t conn_uuid_show(struct kobject *kobj, struct attribute *attr, char *buf)
526 struct obd_device *obd = container_of(kobj, struct obd_device,
528 struct ptlrpc_connection *conn;
531 LPROCFS_CLIMP_CHECK(obd);
532 conn = obd->u.cli.cl_import->imp_connection;
533 if (conn && obd->u.cli.cl_import)
534 count = sprintf(buf, "%s\n", conn->c_remote_uuid.uuid);
536 count = sprintf(buf, "%s\n", "<none>");
538 LPROCFS_CLIMP_EXIT(obd);
541 EXPORT_SYMBOL(conn_uuid_show);
543 int lprocfs_server_uuid_seq_show(struct seq_file *m, void *data)
545 struct obd_device *obd = data;
546 struct obd_import *imp;
547 char *imp_state_name = NULL;
550 LASSERT(obd != NULL);
551 LPROCFS_CLIMP_CHECK(obd);
552 imp = obd->u.cli.cl_import;
553 imp_state_name = ptlrpc_import_state_name(imp->imp_state);
554 seq_printf(m, "%s\t%s%s\n", obd2cli_tgt(obd), imp_state_name,
555 imp->imp_deactive ? "\tDEACTIVATED" : "");
557 LPROCFS_CLIMP_EXIT(obd);
560 EXPORT_SYMBOL(lprocfs_server_uuid_seq_show);
562 /** add up per-cpu counters */
565 * Lock statistics structure for access, possibly only on this CPU.
567 * The statistics struct may be allocated with per-CPU structures for
568 * efficient concurrent update (usually only on server-wide stats), or
569 * as a single global struct (e.g. for per-client or per-job statistics),
570 * so the required locking depends on the type of structure allocated.
572 * For per-CPU statistics, pin the thread to the current cpuid so that
573 * will only access the statistics for that CPU. If the stats structure
574 * for the current CPU has not been allocated (or previously freed),
575 * allocate it now. The per-CPU statistics do not need locking since
576 * the thread is pinned to the CPU during update.
578 * For global statistics, lock the stats structure to prevent concurrent update.
580 * \param[in] stats statistics structure to lock
581 * \param[in] opc type of operation:
582 * LPROCFS_GET_SMP_ID: "lock" and return current CPU index
583 * for incrementing statistics for that CPU
584 * LPROCFS_GET_NUM_CPU: "lock" and return number of used
585 * CPU indices to iterate over all indices
586 * \param[out] flags CPU interrupt saved state for IRQ-safe locking
588 * \retval cpuid of current thread or number of allocated structs
589 * \retval negative on error (only for opc LPROCFS_GET_SMP_ID + per-CPU stats)
591 int lprocfs_stats_lock(struct lprocfs_stats *stats,
592 enum lprocfs_stats_lock_ops opc,
593 unsigned long *flags)
595 if (stats->ls_flags & LPROCFS_STATS_FLAG_NOPERCPU) {
596 if (stats->ls_flags & LPROCFS_STATS_FLAG_IRQ_SAFE)
597 spin_lock_irqsave(&stats->ls_lock, *flags);
599 spin_lock(&stats->ls_lock);
600 return opc == LPROCFS_GET_NUM_CPU ? 1 : 0;
604 case LPROCFS_GET_SMP_ID: {
605 unsigned int cpuid = get_cpu();
607 if (unlikely(!stats->ls_percpu[cpuid])) {
608 int rc = lprocfs_stats_alloc_one(stats, cpuid);
617 case LPROCFS_GET_NUM_CPU:
618 return stats->ls_biggest_alloc_num;
625 * Unlock statistics structure after access.
627 * Unlock the lock acquired via lprocfs_stats_lock() for global statistics,
628 * or unpin this thread from the current cpuid for per-CPU statistics.
630 * This function must be called using the same arguments as used when calling
631 * lprocfs_stats_lock() so that the correct operation can be performed.
633 * \param[in] stats statistics structure to unlock
634 * \param[in] opc type of operation (current cpuid or number of structs)
635 * \param[in] flags CPU interrupt saved state for IRQ-safe locking
637 void lprocfs_stats_unlock(struct lprocfs_stats *stats,
638 enum lprocfs_stats_lock_ops opc,
639 unsigned long *flags)
641 if (stats->ls_flags & LPROCFS_STATS_FLAG_NOPERCPU) {
642 if (stats->ls_flags & LPROCFS_STATS_FLAG_IRQ_SAFE)
643 spin_unlock_irqrestore(&stats->ls_lock, *flags);
645 spin_unlock(&stats->ls_lock);
646 } else if (opc == LPROCFS_GET_SMP_ID) {
651 /** add up per-cpu counters */
652 void lprocfs_stats_collect(struct lprocfs_stats *stats, int idx,
653 struct lprocfs_counter *cnt)
655 unsigned int num_entry;
656 struct lprocfs_counter *percpu_cntr;
658 unsigned long flags = 0;
660 memset(cnt, 0, sizeof(*cnt));
663 /* set count to 1 to avoid divide-by-zero errs in callers */
668 cnt->lc_min = LC_MIN_INIT;
670 num_entry = lprocfs_stats_lock(stats, LPROCFS_GET_NUM_CPU, &flags);
672 for (i = 0; i < num_entry; i++) {
673 if (!stats->ls_percpu[i])
675 percpu_cntr = lprocfs_stats_counter_get(stats, i, idx);
677 cnt->lc_count += percpu_cntr->lc_count;
678 cnt->lc_sum += percpu_cntr->lc_sum;
679 if (percpu_cntr->lc_min < cnt->lc_min)
680 cnt->lc_min = percpu_cntr->lc_min;
681 if (percpu_cntr->lc_max > cnt->lc_max)
682 cnt->lc_max = percpu_cntr->lc_max;
683 cnt->lc_sumsquare += percpu_cntr->lc_sumsquare;
686 lprocfs_stats_unlock(stats, LPROCFS_GET_NUM_CPU, &flags);
689 static void obd_import_flags2str(struct obd_import *imp, struct seq_file *m)
693 if (imp->imp_obd->obd_no_recov) {
694 seq_printf(m, "no_recov");
698 flag2str(imp, invalid);
699 flag2str(imp, deactive);
700 flag2str(imp, replayable);
701 flag2str(imp, delayed_recovery);
702 flag2str(imp, vbr_failed);
703 flag2str(imp, pingable);
704 flag2str(imp, resend_replay);
705 flag2str(imp, no_pinger_recover);
706 flag2str(imp, connect_tried);
709 static const char *obd_connect_names[] = {
728 "remote_client_by_force",
737 "mds_mds_connection",
740 "alt_checksum_algorithm",
776 "file_secctx", /* 0x01 */
777 "lockaheadv2", /* 0x02 */
778 "dir_migrate", /* 0x04 */
779 "unknown", /* 0x08 */
780 "unknown", /* 0x10 */
783 "lock_convert", /* 0x80 */
784 "archive_id_array", /* 0x100 */
785 "unknown", /* 0x200 */
786 "selinux_policy", /* 0x400 */
792 void obd_connect_seq_flags2str(struct seq_file *m, __u64 flags, __u64 flags2,
799 for (i = 0, mask = 1; i < 64; i++, mask <<= 1) {
801 seq_printf(m, "%s%s",
802 first ? "" : sep, obd_connect_names[i]);
807 if (flags & ~(mask - 1)) {
808 seq_printf(m, "%sunknown_%#llx",
809 first ? "" : sep, flags & ~(mask - 1));
813 if (!(flags & OBD_CONNECT_FLAGS2) || flags2 == 0)
816 for (i = 64, mask = 1; obd_connect_names[i] != NULL; i++, mask <<= 1) {
818 seq_printf(m, "%s%s",
819 first ? "" : sep, obd_connect_names[i]);
824 if (flags2 & ~(mask - 1)) {
825 seq_printf(m, "%sunknown2_%#llx",
826 first ? "" : sep, flags2 & ~(mask - 1));
830 EXPORT_SYMBOL(obd_connect_seq_flags2str);
832 int obd_connect_flags2str(char *page, int count, __u64 flags, __u64 flags2,
838 for (i = 0, mask = 1; i < 64; i++, mask <<= 1) {
840 ret += snprintf(page + ret, count - ret, "%s%s",
841 ret ? sep : "", obd_connect_names[i]);
844 if (flags & ~(mask - 1))
845 ret += snprintf(page + ret, count - ret,
847 ret ? sep : "", flags & ~(mask - 1));
849 if (!(flags & OBD_CONNECT_FLAGS2) || flags2 == 0)
852 for (i = 64, mask = 1; obd_connect_names[i] != NULL; i++, mask <<= 1) {
854 ret += snprintf(page + ret, count - ret, "%s%s",
855 ret ? sep : "", obd_connect_names[i]);
858 if (flags2 & ~(mask - 1))
859 ret += snprintf(page + ret, count - ret,
861 ret ? sep : "", flags2 & ~(mask - 1));
865 EXPORT_SYMBOL(obd_connect_flags2str);
868 obd_connect_data_seqprint(struct seq_file *m, struct obd_connect_data *ocd)
872 LASSERT(ocd != NULL);
873 flags = ocd->ocd_connect_flags;
875 seq_printf(m, " connect_data:\n"
878 ocd->ocd_connect_flags,
880 if (flags & OBD_CONNECT_VERSION)
881 seq_printf(m, " target_version: %u.%u.%u.%u\n",
882 OBD_OCD_VERSION_MAJOR(ocd->ocd_version),
883 OBD_OCD_VERSION_MINOR(ocd->ocd_version),
884 OBD_OCD_VERSION_PATCH(ocd->ocd_version),
885 OBD_OCD_VERSION_FIX(ocd->ocd_version));
886 if (flags & OBD_CONNECT_MDS)
887 seq_printf(m, " mdt_index: %d\n", ocd->ocd_group);
888 if (flags & OBD_CONNECT_GRANT)
889 seq_printf(m, " initial_grant: %d\n", ocd->ocd_grant);
890 if (flags & OBD_CONNECT_INDEX)
891 seq_printf(m, " target_index: %u\n", ocd->ocd_index);
892 if (flags & OBD_CONNECT_BRW_SIZE)
893 seq_printf(m, " max_brw_size: %d\n", ocd->ocd_brw_size);
894 if (flags & OBD_CONNECT_IBITS)
895 seq_printf(m, " ibits_known: %#llx\n",
896 ocd->ocd_ibits_known);
897 if (flags & OBD_CONNECT_GRANT_PARAM)
898 seq_printf(m, " grant_block_size: %d\n"
899 " grant_inode_size: %d\n"
900 " grant_max_extent_size: %d\n"
901 " grant_extent_tax: %d\n",
902 1 << ocd->ocd_grant_blkbits,
903 1 << ocd->ocd_grant_inobits,
904 ocd->ocd_grant_max_blks << ocd->ocd_grant_blkbits,
905 ocd->ocd_grant_tax_kb << 10);
906 if (flags & OBD_CONNECT_TRANSNO)
907 seq_printf(m, " first_transno: %#llx\n",
909 if (flags & OBD_CONNECT_CKSUM)
910 seq_printf(m, " cksum_types: %#x\n",
911 ocd->ocd_cksum_types);
912 if (flags & OBD_CONNECT_MAX_EASIZE)
913 seq_printf(m, " max_easize: %d\n", ocd->ocd_max_easize);
914 if (flags & OBD_CONNECT_MAXBYTES)
915 seq_printf(m, " max_object_bytes: %llu\n",
917 if (flags & OBD_CONNECT_MULTIMODRPCS)
918 seq_printf(m, " max_mod_rpcs: %hu\n",
919 ocd->ocd_maxmodrpcs);
922 int lprocfs_import_seq_show(struct seq_file *m, void *data)
924 char nidstr[LNET_NIDSTR_SIZE];
925 struct lprocfs_counter ret;
926 struct lprocfs_counter_header *header;
927 struct obd_device *obd = (struct obd_device *)data;
928 struct obd_import *imp;
929 struct obd_import_conn *conn;
930 struct obd_connect_data *ocd;
935 LASSERT(obd != NULL);
936 LPROCFS_CLIMP_CHECK(obd);
937 imp = obd->u.cli.cl_import;
938 ocd = &imp->imp_connect_data;
940 seq_printf(m, "import:\n"
944 " connect_flags: [ ",
947 ptlrpc_import_state_name(imp->imp_state));
948 obd_connect_seq_flags2str(m, imp->imp_connect_data.ocd_connect_flags,
949 imp->imp_connect_data.ocd_connect_flags2,
951 seq_printf(m, " ]\n");
952 obd_connect_data_seqprint(m, ocd);
953 seq_printf(m, " import_flags: [ ");
954 obd_import_flags2str(imp, m);
958 " failover_nids: [ ");
959 spin_lock(&imp->imp_lock);
961 list_for_each_entry(conn, &imp->imp_conn_list, oic_item) {
962 libcfs_nid2str_r(conn->oic_conn->c_peer.nid,
963 nidstr, sizeof(nidstr));
964 seq_printf(m, "%s%s", j ? ", " : "", nidstr);
967 if (imp->imp_connection)
968 libcfs_nid2str_r(imp->imp_connection->c_peer.nid,
969 nidstr, sizeof(nidstr));
971 strncpy(nidstr, "<none>", sizeof(nidstr));
973 " current_connection: %s\n"
974 " connection_attempts: %u\n"
976 " in-progress_invalidations: %u\n"
981 atomic_read(&imp->imp_inval_count),
982 ktime_get_real_seconds() - imp->imp_last_reply_time);
983 spin_unlock(&imp->imp_lock);
985 if (!obd->obd_svc_stats)
988 header = &obd->obd_svc_stats->ls_cnt_header[PTLRPC_REQWAIT_CNTR];
989 lprocfs_stats_collect(obd->obd_svc_stats, PTLRPC_REQWAIT_CNTR, &ret);
990 if (ret.lc_count != 0) {
991 /* first argument to do_div MUST be __u64 */
992 __u64 sum = ret.lc_sum;
993 do_div(sum, ret.lc_count);
997 seq_printf(m, " rpcs:\n"
999 " unregistering: %u\n"
1001 " avg_waittime: %llu %s\n",
1002 atomic_read(&imp->imp_inflight),
1003 atomic_read(&imp->imp_unregistering),
1004 atomic_read(&imp->imp_timeouts),
1005 ret.lc_sum, header->lc_units);
1008 for(j = 0; j < IMP_AT_MAX_PORTALS; j++) {
1009 if (imp->imp_at.iat_portal[j] == 0)
1011 k = max_t(unsigned int, k,
1012 at_get(&imp->imp_at.iat_service_estimate[j]));
1014 seq_printf(m, " service_estimates:\n"
1015 " services: %u sec\n"
1016 " network: %u sec\n",
1018 at_get(&imp->imp_at.iat_net_latency));
1020 seq_printf(m, " transactions:\n"
1021 " last_replay: %llu\n"
1022 " peer_committed: %llu\n"
1023 " last_checked: %llu\n",
1024 imp->imp_last_replay_transno,
1025 imp->imp_peer_committed_transno,
1026 imp->imp_last_transno_checked);
1028 /* avg data rates */
1029 for (rw = 0; rw <= 1; rw++) {
1030 lprocfs_stats_collect(obd->obd_svc_stats,
1031 PTLRPC_LAST_CNTR + BRW_READ_BYTES + rw,
1033 if (ret.lc_sum > 0 && ret.lc_count > 0) {
1034 /* first argument to do_div MUST be __u64 */
1035 __u64 sum = ret.lc_sum;
1036 do_div(sum, ret.lc_count);
1038 seq_printf(m, " %s_data_averages:\n"
1039 " bytes_per_rpc: %llu\n",
1040 rw ? "write" : "read",
1043 k = (int)ret.lc_sum;
1044 j = opcode_offset(OST_READ + rw) + EXTRA_MAX_OPCODES;
1045 header = &obd->obd_svc_stats->ls_cnt_header[j];
1046 lprocfs_stats_collect(obd->obd_svc_stats, j, &ret);
1047 if (ret.lc_sum > 0 && ret.lc_count != 0) {
1048 /* first argument to do_div MUST be __u64 */
1049 __u64 sum = ret.lc_sum;
1050 do_div(sum, ret.lc_count);
1052 seq_printf(m, " %s_per_rpc: %llu\n",
1053 header->lc_units, ret.lc_sum);
1054 j = (int)ret.lc_sum;
1056 seq_printf(m, " MB_per_sec: %u.%.02u\n",
1057 k / j, (100 * k / j) % 100);
1062 LPROCFS_CLIMP_EXIT(obd);
1065 EXPORT_SYMBOL(lprocfs_import_seq_show);
1067 int lprocfs_state_seq_show(struct seq_file *m, void *data)
1069 struct obd_device *obd = (struct obd_device *)data;
1070 struct obd_import *imp;
1073 LASSERT(obd != NULL);
1074 LPROCFS_CLIMP_CHECK(obd);
1075 imp = obd->u.cli.cl_import;
1077 seq_printf(m, "current_state: %s\n",
1078 ptlrpc_import_state_name(imp->imp_state));
1079 seq_printf(m, "state_history:\n");
1080 k = imp->imp_state_hist_idx;
1081 for (j = 0; j < IMP_STATE_HIST_LEN; j++) {
1082 struct import_state_hist *ish =
1083 &imp->imp_state_hist[(k + j) % IMP_STATE_HIST_LEN];
1084 if (ish->ish_state == 0)
1086 seq_printf(m, " - [ %lld, %s ]\n", (s64)ish->ish_time,
1087 ptlrpc_import_state_name(ish->ish_state));
1090 LPROCFS_CLIMP_EXIT(obd);
1093 EXPORT_SYMBOL(lprocfs_state_seq_show);
1095 int lprocfs_at_hist_helper(struct seq_file *m, struct adaptive_timeout *at)
1098 for (i = 0; i < AT_BINS; i++)
1099 seq_printf(m, "%3u ", at->at_hist[i]);
1100 seq_printf(m, "\n");
1103 EXPORT_SYMBOL(lprocfs_at_hist_helper);
1105 /* See also ptlrpc_lprocfs_timeouts_show_seq */
1106 int lprocfs_timeouts_seq_show(struct seq_file *m, void *data)
1108 struct obd_device *obd = (struct obd_device *)data;
1109 struct obd_import *imp;
1110 unsigned int cur, worst;
1111 time64_t now, worstt;
1114 LASSERT(obd != NULL);
1115 LPROCFS_CLIMP_CHECK(obd);
1116 imp = obd->u.cli.cl_import;
1118 now = ktime_get_real_seconds();
1120 /* Some network health info for kicks */
1121 seq_printf(m, "%-10s : %lld, %llds ago\n",
1122 "last reply", (s64)imp->imp_last_reply_time,
1123 (s64)(now - imp->imp_last_reply_time));
1125 cur = at_get(&imp->imp_at.iat_net_latency);
1126 worst = imp->imp_at.iat_net_latency.at_worst_ever;
1127 worstt = imp->imp_at.iat_net_latency.at_worst_time;
1128 seq_printf(m, "%-10s : cur %3u worst %3u (at %lld, %llds ago) ",
1129 "network", cur, worst, (s64)worstt, (s64)(now - worstt));
1130 lprocfs_at_hist_helper(m, &imp->imp_at.iat_net_latency);
1132 for(i = 0; i < IMP_AT_MAX_PORTALS; i++) {
1133 if (imp->imp_at.iat_portal[i] == 0)
1135 cur = at_get(&imp->imp_at.iat_service_estimate[i]);
1136 worst = imp->imp_at.iat_service_estimate[i].at_worst_ever;
1137 worstt = imp->imp_at.iat_service_estimate[i].at_worst_time;
1138 seq_printf(m, "portal %-2d : cur %3u worst %3u (at %lld, %llds ago) ",
1139 imp->imp_at.iat_portal[i], cur, worst, (s64)worstt,
1140 (s64)(now - worstt));
1141 lprocfs_at_hist_helper(m, &imp->imp_at.iat_service_estimate[i]);
1144 LPROCFS_CLIMP_EXIT(obd);
1147 EXPORT_SYMBOL(lprocfs_timeouts_seq_show);
1149 int lprocfs_connect_flags_seq_show(struct seq_file *m, void *data)
1151 struct obd_device *obd = data;
1155 LPROCFS_CLIMP_CHECK(obd);
1156 flags = obd->u.cli.cl_import->imp_connect_data.ocd_connect_flags;
1157 flags2 = obd->u.cli.cl_import->imp_connect_data.ocd_connect_flags2;
1158 seq_printf(m, "flags=%#llx\n", flags);
1159 seq_printf(m, "flags2=%#llx\n", flags2);
1160 obd_connect_seq_flags2str(m, flags, flags2, "\n");
1161 seq_printf(m, "\n");
1162 LPROCFS_CLIMP_EXIT(obd);
1165 EXPORT_SYMBOL(lprocfs_connect_flags_seq_show);
1167 static const struct attribute *obd_def_uuid_attrs[] = {
1168 &lustre_attr_uuid.attr,
1172 static const struct attribute *obd_def_attrs[] = {
1173 &lustre_attr_blocksize.attr,
1174 &lustre_attr_kbytestotal.attr,
1175 &lustre_attr_kbytesfree.attr,
1176 &lustre_attr_kbytesavail.attr,
1177 &lustre_attr_filestotal.attr,
1178 &lustre_attr_filesfree.attr,
1179 &lustre_attr_uuid.attr,
1183 static void obd_sysfs_release(struct kobject *kobj)
1185 struct obd_device *obd = container_of(kobj, struct obd_device,
1188 complete(&obd->obd_kobj_unregister);
1191 int lprocfs_obd_setup(struct obd_device *obd, bool uuid_only)
1193 struct lprocfs_vars *debugfs_vars = NULL;
1196 if (!obd || obd->obd_magic != OBD_DEVICE_MAGIC)
1199 rc = kobject_set_name(&obd->obd_kset.kobj, "%s", obd->obd_name);
1203 obd->obd_ktype.sysfs_ops = &lustre_sysfs_ops;
1204 obd->obd_ktype.release = obd_sysfs_release;
1206 obd->obd_kset.kobj.parent = obd->obd_type->typ_kobj;
1207 obd->obd_kset.kobj.ktype = &obd->obd_ktype;
1208 init_completion(&obd->obd_kobj_unregister);
1209 rc = kset_register(&obd->obd_kset);
1214 obd->obd_attrs = obd_def_uuid_attrs;
1216 obd->obd_attrs = obd_def_attrs;
1218 rc = sysfs_create_files(&obd->obd_kset.kobj, obd->obd_attrs);
1220 kset_unregister(&obd->obd_kset);
1224 if (!obd->obd_type->typ_procroot)
1225 debugfs_vars = obd->obd_vars;
1226 obd->obd_debugfs_entry = ldebugfs_register(obd->obd_name,
1227 obd->obd_type->typ_debugfs_entry,
1229 if (IS_ERR_OR_NULL(obd->obd_debugfs_entry)) {
1230 rc = obd->obd_debugfs_entry ? PTR_ERR(obd->obd_debugfs_entry)
1232 CERROR("error %d setting up debugfs for %s\n",
1234 obd->obd_debugfs_entry = NULL;
1236 sysfs_remove_files(&obd->obd_kset.kobj, obd->obd_attrs);
1237 obd->obd_attrs = NULL;
1238 kset_unregister(&obd->obd_kset);
1242 if (obd->obd_proc_entry || !obd->obd_type->typ_procroot)
1243 GOTO(already_registered, rc);
1245 obd->obd_proc_entry = lprocfs_register(obd->obd_name,
1246 obd->obd_type->typ_procroot,
1247 obd->obd_vars, obd);
1248 if (IS_ERR(obd->obd_proc_entry)) {
1249 rc = PTR_ERR(obd->obd_proc_entry);
1250 CERROR("error %d setting up lprocfs for %s\n",rc,obd->obd_name);
1251 obd->obd_proc_entry = NULL;
1253 ldebugfs_remove(&obd->obd_debugfs_entry);
1254 sysfs_remove_files(&obd->obd_kset.kobj, obd->obd_attrs);
1255 obd->obd_attrs = NULL;
1256 kset_unregister(&obd->obd_kset);
1262 EXPORT_SYMBOL(lprocfs_obd_setup);
1264 int lprocfs_obd_cleanup(struct obd_device *obd)
1269 if (obd->obd_proc_exports_entry) {
1270 /* Should be no exports left */
1271 lprocfs_remove(&obd->obd_proc_exports_entry);
1272 obd->obd_proc_exports_entry = NULL;
1275 if (obd->obd_proc_entry) {
1276 lprocfs_remove(&obd->obd_proc_entry);
1277 obd->obd_proc_entry = NULL;
1280 if (!IS_ERR_OR_NULL(obd->obd_debugfs_entry))
1281 ldebugfs_remove(&obd->obd_debugfs_entry);
1283 /* obd device never allocated a kset */
1284 if (!obd->obd_kset.kobj.state_initialized)
1287 if (obd->obd_attrs) {
1288 sysfs_remove_files(&obd->obd_kset.kobj, obd->obd_attrs);
1289 obd->obd_attrs = NULL;
1292 kset_unregister(&obd->obd_kset);
1293 wait_for_completion(&obd->obd_kobj_unregister);
1296 EXPORT_SYMBOL(lprocfs_obd_cleanup);
1298 int lprocfs_stats_alloc_one(struct lprocfs_stats *stats, unsigned int cpuid)
1300 struct lprocfs_counter *cntr;
1301 unsigned int percpusize;
1303 unsigned long flags = 0;
1306 LASSERT(stats->ls_percpu[cpuid] == NULL);
1307 LASSERT((stats->ls_flags & LPROCFS_STATS_FLAG_NOPERCPU) == 0);
1309 percpusize = lprocfs_stats_counter_size(stats);
1310 LIBCFS_ALLOC_ATOMIC(stats->ls_percpu[cpuid], percpusize);
1311 if (stats->ls_percpu[cpuid]) {
1313 if (unlikely(stats->ls_biggest_alloc_num <= cpuid)) {
1314 if (stats->ls_flags & LPROCFS_STATS_FLAG_IRQ_SAFE)
1315 spin_lock_irqsave(&stats->ls_lock, flags);
1317 spin_lock(&stats->ls_lock);
1318 if (stats->ls_biggest_alloc_num <= cpuid)
1319 stats->ls_biggest_alloc_num = cpuid + 1;
1320 if (stats->ls_flags & LPROCFS_STATS_FLAG_IRQ_SAFE) {
1321 spin_unlock_irqrestore(&stats->ls_lock, flags);
1323 spin_unlock(&stats->ls_lock);
1326 /* initialize the ls_percpu[cpuid] non-zero counter */
1327 for (i = 0; i < stats->ls_num; ++i) {
1328 cntr = lprocfs_stats_counter_get(stats, cpuid, i);
1329 cntr->lc_min = LC_MIN_INIT;
1335 struct lprocfs_stats *lprocfs_alloc_stats(unsigned int num,
1336 enum lprocfs_stats_flags flags)
1338 struct lprocfs_stats *stats;
1339 unsigned int num_entry;
1340 unsigned int percpusize = 0;
1346 if (lprocfs_no_percpu_stats != 0)
1347 flags |= LPROCFS_STATS_FLAG_NOPERCPU;
1349 if (flags & LPROCFS_STATS_FLAG_NOPERCPU)
1352 num_entry = num_possible_cpus();
1354 /* alloc percpu pointers for all possible cpu slots */
1355 LIBCFS_ALLOC(stats, offsetof(typeof(*stats), ls_percpu[num_entry]));
1359 stats->ls_num = num;
1360 stats->ls_flags = flags;
1361 spin_lock_init(&stats->ls_lock);
1363 /* alloc num of counter headers */
1364 LIBCFS_ALLOC(stats->ls_cnt_header,
1365 stats->ls_num * sizeof(struct lprocfs_counter_header));
1366 if (!stats->ls_cnt_header)
1369 if ((flags & LPROCFS_STATS_FLAG_NOPERCPU) != 0) {
1370 /* contains only one set counters */
1371 percpusize = lprocfs_stats_counter_size(stats);
1372 LIBCFS_ALLOC_ATOMIC(stats->ls_percpu[0], percpusize);
1373 if (!stats->ls_percpu[0])
1375 stats->ls_biggest_alloc_num = 1;
1376 } else if ((flags & LPROCFS_STATS_FLAG_IRQ_SAFE) != 0) {
1377 /* alloc all percpu data, currently only obd_memory use this */
1378 for (i = 0; i < num_entry; ++i)
1379 if (lprocfs_stats_alloc_one(stats, i) < 0)
1386 lprocfs_free_stats(&stats);
1389 EXPORT_SYMBOL(lprocfs_alloc_stats);
1391 void lprocfs_free_stats(struct lprocfs_stats **statsh)
1393 struct lprocfs_stats *stats = *statsh;
1394 unsigned int num_entry;
1395 unsigned int percpusize;
1398 if (!stats || stats->ls_num == 0)
1402 if (stats->ls_flags & LPROCFS_STATS_FLAG_NOPERCPU)
1405 num_entry = num_possible_cpus();
1407 percpusize = lprocfs_stats_counter_size(stats);
1408 for (i = 0; i < num_entry; i++)
1409 if (stats->ls_percpu[i])
1410 LIBCFS_FREE(stats->ls_percpu[i], percpusize);
1411 if (stats->ls_cnt_header)
1412 LIBCFS_FREE(stats->ls_cnt_header, stats->ls_num *
1413 sizeof(struct lprocfs_counter_header));
1414 LIBCFS_FREE(stats, offsetof(typeof(*stats), ls_percpu[num_entry]));
1416 EXPORT_SYMBOL(lprocfs_free_stats);
1418 u64 lprocfs_stats_collector(struct lprocfs_stats *stats, int idx,
1419 enum lprocfs_fields_flags field)
1421 unsigned long flags = 0;
1422 unsigned int num_cpu;
1428 num_cpu = lprocfs_stats_lock(stats, LPROCFS_GET_NUM_CPU, &flags);
1429 for (i = 0; i < num_cpu; i++) {
1430 struct lprocfs_counter *cntr;
1432 if (!stats->ls_percpu[i])
1435 cntr = lprocfs_stats_counter_get(stats, i, idx);
1436 ret += lprocfs_read_helper(cntr, &stats->ls_cnt_header[idx],
1437 stats->ls_flags, field);
1439 lprocfs_stats_unlock(stats, LPROCFS_GET_NUM_CPU, &flags);
1442 EXPORT_SYMBOL(lprocfs_stats_collector);
1444 void lprocfs_clear_stats(struct lprocfs_stats *stats)
1446 struct lprocfs_counter *percpu_cntr;
1449 unsigned int num_entry;
1450 unsigned long flags = 0;
1452 num_entry = lprocfs_stats_lock(stats, LPROCFS_GET_NUM_CPU, &flags);
1454 for (i = 0; i < num_entry; i++) {
1455 if (!stats->ls_percpu[i])
1457 for (j = 0; j < stats->ls_num; j++) {
1458 percpu_cntr = lprocfs_stats_counter_get(stats, i, j);
1459 percpu_cntr->lc_count = 0;
1460 percpu_cntr->lc_min = LC_MIN_INIT;
1461 percpu_cntr->lc_max = 0;
1462 percpu_cntr->lc_sumsquare = 0;
1463 percpu_cntr->lc_sum = 0;
1464 if (stats->ls_flags & LPROCFS_STATS_FLAG_IRQ_SAFE)
1465 percpu_cntr->lc_sum_irq = 0;
1469 lprocfs_stats_unlock(stats, LPROCFS_GET_NUM_CPU, &flags);
1471 EXPORT_SYMBOL(lprocfs_clear_stats);
1473 static ssize_t lprocfs_stats_seq_write(struct file *file,
1474 const char __user *buf,
1475 size_t len, loff_t *off)
1477 struct seq_file *seq = file->private_data;
1478 struct lprocfs_stats *stats = seq->private;
1480 lprocfs_clear_stats(stats);
1485 static void *lprocfs_stats_seq_start(struct seq_file *p, loff_t *pos)
1487 struct lprocfs_stats *stats = p->private;
1489 return (*pos < stats->ls_num) ? pos : NULL;
1492 static void lprocfs_stats_seq_stop(struct seq_file *p, void *v)
1496 static void *lprocfs_stats_seq_next(struct seq_file *p, void *v, loff_t *pos)
1500 return lprocfs_stats_seq_start(p, pos);
1503 /* seq file export of one lprocfs counter */
1504 static int lprocfs_stats_seq_show(struct seq_file *p, void *v)
1506 struct lprocfs_stats *stats = p->private;
1507 struct lprocfs_counter_header *hdr;
1508 struct lprocfs_counter ctr;
1509 int idx = *(loff_t *)v;
1512 struct timespec64 now;
1514 ktime_get_real_ts64(&now);
1515 seq_printf(p, "%-25s %llu.%09lu secs.nsecs\n",
1516 "snapshot_time", (s64)now.tv_sec, now.tv_nsec);
1519 hdr = &stats->ls_cnt_header[idx];
1520 lprocfs_stats_collect(stats, idx, &ctr);
1522 if (ctr.lc_count == 0)
1525 seq_printf(p, "%-25s %lld samples [%s]", hdr->lc_name,
1526 ctr.lc_count, hdr->lc_units);
1528 if ((hdr->lc_config & LPROCFS_CNTR_AVGMINMAX) && ctr.lc_count > 0) {
1529 seq_printf(p, " %lld %lld %lld",
1530 ctr.lc_min, ctr.lc_max, ctr.lc_sum);
1531 if (hdr->lc_config & LPROCFS_CNTR_STDDEV)
1532 seq_printf(p, " %llu", ctr.lc_sumsquare);
1538 static const struct seq_operations lprocfs_stats_seq_sops = {
1539 .start = lprocfs_stats_seq_start,
1540 .stop = lprocfs_stats_seq_stop,
1541 .next = lprocfs_stats_seq_next,
1542 .show = lprocfs_stats_seq_show,
1545 static int lprocfs_stats_seq_open(struct inode *inode, struct file *file)
1547 struct seq_file *seq;
1550 rc = LPROCFS_ENTRY_CHECK(inode);
1554 rc = seq_open(file, &lprocfs_stats_seq_sops);
1557 seq = file->private_data;
1558 seq->private = inode->i_private ? inode->i_private : PDE_DATA(inode);
1562 static const struct file_operations lprocfs_stats_seq_fops = {
1563 .owner = THIS_MODULE,
1564 .open = lprocfs_stats_seq_open,
1566 .write = lprocfs_stats_seq_write,
1567 .llseek = seq_lseek,
1568 .release = lprocfs_seq_release,
1571 int ldebugfs_register_stats(struct dentry *parent, const char *name,
1572 struct lprocfs_stats *stats)
1574 struct dentry *entry;
1576 LASSERT(!IS_ERR_OR_NULL(parent));
1578 entry = debugfs_create_file(name, 0644, parent, stats,
1579 &lprocfs_stats_seq_fops);
1580 if (IS_ERR_OR_NULL(entry))
1581 return entry ? PTR_ERR(entry) : -ENOMEM;
1585 EXPORT_SYMBOL_GPL(ldebugfs_register_stats);
1587 int lprocfs_register_stats(struct proc_dir_entry *root, const char *name,
1588 struct lprocfs_stats *stats)
1590 struct proc_dir_entry *entry;
1591 LASSERT(root != NULL);
1593 entry = proc_create_data(name, 0644, root,
1594 &lprocfs_stats_seq_fops, stats);
1599 EXPORT_SYMBOL(lprocfs_register_stats);
1601 void lprocfs_counter_init(struct lprocfs_stats *stats, int index,
1602 unsigned conf, const char *name, const char *units)
1604 struct lprocfs_counter_header *header;
1605 struct lprocfs_counter *percpu_cntr;
1606 unsigned long flags = 0;
1608 unsigned int num_cpu;
1610 LASSERT(stats != NULL);
1612 header = &stats->ls_cnt_header[index];
1613 LASSERTF(header != NULL, "Failed to allocate stats header:[%d]%s/%s\n",
1614 index, name, units);
1616 header->lc_config = conf;
1617 header->lc_name = name;
1618 header->lc_units = units;
1620 num_cpu = lprocfs_stats_lock(stats, LPROCFS_GET_NUM_CPU, &flags);
1621 for (i = 0; i < num_cpu; ++i) {
1622 if (!stats->ls_percpu[i])
1624 percpu_cntr = lprocfs_stats_counter_get(stats, i, index);
1625 percpu_cntr->lc_count = 0;
1626 percpu_cntr->lc_min = LC_MIN_INIT;
1627 percpu_cntr->lc_max = 0;
1628 percpu_cntr->lc_sumsquare = 0;
1629 percpu_cntr->lc_sum = 0;
1630 if ((stats->ls_flags & LPROCFS_STATS_FLAG_IRQ_SAFE) != 0)
1631 percpu_cntr->lc_sum_irq = 0;
1633 lprocfs_stats_unlock(stats, LPROCFS_GET_NUM_CPU, &flags);
1635 EXPORT_SYMBOL(lprocfs_counter_init);
1637 static const char * const mps_stats[] = {
1638 [LPROC_MD_CLOSE] = "close",
1639 [LPROC_MD_CREATE] = "create",
1640 [LPROC_MD_ENQUEUE] = "enqueue",
1641 [LPROC_MD_GETATTR] = "getattr",
1642 [LPROC_MD_INTENT_LOCK] = "intent_lock",
1643 [LPROC_MD_LINK] = "link",
1644 [LPROC_MD_RENAME] = "rename",
1645 [LPROC_MD_SETATTR] = "setattr",
1646 [LPROC_MD_FSYNC] = "fsync",
1647 [LPROC_MD_READ_PAGE] = "read_page",
1648 [LPROC_MD_UNLINK] = "unlink",
1649 [LPROC_MD_SETXATTR] = "setxattr",
1650 [LPROC_MD_GETXATTR] = "getxattr",
1651 [LPROC_MD_INTENT_GETATTR_ASYNC] = "intent_getattr_async",
1652 [LPROC_MD_REVALIDATE_LOCK] = "revalidate_lock",
1655 int lprocfs_alloc_md_stats(struct obd_device *obd,
1656 unsigned int num_private_stats)
1658 struct lprocfs_stats *stats;
1659 unsigned int num_stats;
1663 * TODO Ensure that this function is only used where
1664 * appropriate by adding an assertion to the effect that
1665 * obd->obd_type->typ_md_ops is not NULL. We can't do this now
1666 * because mdt_procfs_init() uses this function to allocate
1667 * the stats backing /proc/fs/lustre/mdt/.../md_stats but the
1668 * mdt layer does not use the md_ops interface. This is
1669 * confusing and a waste of memory. See LU-2484.
1671 LASSERT(obd->obd_proc_entry != NULL);
1672 LASSERT(obd->obd_md_stats == NULL);
1674 num_stats = ARRAY_SIZE(mps_stats) + num_private_stats;
1675 stats = lprocfs_alloc_stats(num_stats, 0);
1679 for (i = 0; i < ARRAY_SIZE(mps_stats); i++) {
1680 lprocfs_counter_init(stats, i, 0, mps_stats[i], "reqs");
1681 if (!stats->ls_cnt_header[i].lc_name) {
1682 CERROR("Missing md_stat initializer md_op operation at offset %d. Aborting.\n",
1688 rc = lprocfs_register_stats(obd->obd_proc_entry, "md_stats", stats);
1690 lprocfs_free_stats(&stats);
1692 obd->obd_md_stats = stats;
1697 EXPORT_SYMBOL(lprocfs_alloc_md_stats);
1699 void lprocfs_free_md_stats(struct obd_device *obd)
1701 struct lprocfs_stats *stats = obd->obd_md_stats;
1704 obd->obd_md_stats = NULL;
1705 lprocfs_free_stats(&stats);
1708 EXPORT_SYMBOL(lprocfs_free_md_stats);
1710 void lprocfs_init_ldlm_stats(struct lprocfs_stats *ldlm_stats)
1712 lprocfs_counter_init(ldlm_stats,
1713 LDLM_ENQUEUE - LDLM_FIRST_OPC,
1714 0, "ldlm_enqueue", "reqs");
1715 lprocfs_counter_init(ldlm_stats,
1716 LDLM_CONVERT - LDLM_FIRST_OPC,
1717 0, "ldlm_convert", "reqs");
1718 lprocfs_counter_init(ldlm_stats,
1719 LDLM_CANCEL - LDLM_FIRST_OPC,
1720 0, "ldlm_cancel", "reqs");
1721 lprocfs_counter_init(ldlm_stats,
1722 LDLM_BL_CALLBACK - LDLM_FIRST_OPC,
1723 0, "ldlm_bl_callback", "reqs");
1724 lprocfs_counter_init(ldlm_stats,
1725 LDLM_CP_CALLBACK - LDLM_FIRST_OPC,
1726 0, "ldlm_cp_callback", "reqs");
1727 lprocfs_counter_init(ldlm_stats,
1728 LDLM_GL_CALLBACK - LDLM_FIRST_OPC,
1729 0, "ldlm_gl_callback", "reqs");
1731 EXPORT_SYMBOL(lprocfs_init_ldlm_stats);
1733 __s64 lprocfs_read_helper(struct lprocfs_counter *lc,
1734 struct lprocfs_counter_header *header,
1735 enum lprocfs_stats_flags flags,
1736 enum lprocfs_fields_flags field)
1744 case LPROCFS_FIELDS_FLAGS_CONFIG:
1745 ret = header->lc_config;
1747 case LPROCFS_FIELDS_FLAGS_SUM:
1749 if ((flags & LPROCFS_STATS_FLAG_IRQ_SAFE) != 0)
1750 ret += lc->lc_sum_irq;
1752 case LPROCFS_FIELDS_FLAGS_MIN:
1755 case LPROCFS_FIELDS_FLAGS_MAX:
1758 case LPROCFS_FIELDS_FLAGS_AVG:
1759 ret = (lc->lc_max - lc->lc_min) / 2;
1761 case LPROCFS_FIELDS_FLAGS_SUMSQUARE:
1762 ret = lc->lc_sumsquare;
1764 case LPROCFS_FIELDS_FLAGS_COUNT:
1772 EXPORT_SYMBOL(lprocfs_read_helper);
1774 int lprocfs_read_frac_helper(char *buffer, unsigned long count, long val,
1777 long decimal_val, frac_val;
1783 decimal_val = val / mult;
1784 prtn = snprintf(buffer, count, "%ld", decimal_val);
1785 frac_val = val % mult;
1787 if (prtn < (count - 4) && frac_val > 0) {
1789 int i, temp_mult = 1, frac_bits = 0;
1791 temp_frac = frac_val * 10;
1792 buffer[prtn++] = '.';
1793 while (frac_bits < 2 && (temp_frac / mult) < 1) {
1794 /* only reserved 2 bits fraction */
1795 buffer[prtn++] = '0';
1800 * Need to think these cases :
1801 * 1. #echo x.00 > /proc/xxx output result : x
1802 * 2. #echo x.0x > /proc/xxx output result : x.0x
1803 * 3. #echo x.x0 > /proc/xxx output result : x.x
1804 * 4. #echo x.xx > /proc/xxx output result : x.xx
1805 * Only reserved 2 bits fraction.
1807 for (i = 0; i < (5 - prtn); i++)
1810 frac_bits = min((int)count - prtn, 3 - frac_bits);
1811 prtn += snprintf(buffer + prtn, frac_bits, "%ld",
1812 frac_val * temp_mult / mult);
1815 while (buffer[prtn] < '1' || buffer[prtn] > '9') {
1817 if (buffer[prtn] == '.') {
1824 buffer[prtn++] = '\n';
1827 EXPORT_SYMBOL(lprocfs_read_frac_helper);
1829 int lprocfs_seq_read_frac_helper(struct seq_file *m, long val, int mult)
1831 long decimal_val, frac_val;
1833 decimal_val = val / mult;
1834 seq_printf(m, "%ld", decimal_val);
1835 frac_val = val % mult;
1842 /* Three cases: x0, xx, 0x */
1843 if ((frac_val % 10) != 0)
1844 seq_printf(m, ".%ld", frac_val);
1846 seq_printf(m, ".%ld", frac_val / 10);
1849 seq_printf(m, "\n");
1852 EXPORT_SYMBOL(lprocfs_seq_read_frac_helper);
1854 /* Obtains the conversion factor for the unit specified */
1855 static int get_mult(char unit, __u64 *mult)
1860 /* peta, tera, giga, mega, and kilo */
1877 /* some tests expect % to be accepted */
1891 * Ensures the numeric string is valid. The function provides the final
1892 * multiplier in the case a unit exists at the end of the string. It also
1893 * locates the start of the whole and fractional parts (if any). This
1894 * function modifies the string so kstrtoull can be used to parse both
1895 * the whole and fraction portions. This function also figures out
1896 * the base of the number.
1898 static int preprocess_numeric_str(char *buffer, __u64 *mult, __u64 def_mult,
1899 bool allow_units, char **whole, char **frac,
1902 bool hit_decimal = false;
1903 bool hit_unit = false;
1911 /* a hex string if it starts with "0x" */
1912 if (buffer[0] == '0' && tolower(buffer[1]) == 'x') {
1920 /* allow for a single new line before the null terminator */
1921 if (*buffer == '\n') {
1931 /* any chars after our unit indicates a malformed string */
1935 /* ensure we only hit one decimal */
1936 if (*buffer == '.') {
1940 /* if past start, there's a whole part */
1941 if (start != buffer)
1947 } else if (!isdigit(*buffer) &&
1948 !(*base == 16 && isxdigit(*buffer))) {
1950 /* if we allow units, attempt to get mult */
1952 rc = get_mult(*buffer, mult);
1956 /* string stops here, but keep processing */
1968 /* hit a decimal, make sure there's a fractional part */
1974 /* didn't hit a decimal, but may have a whole part */
1975 if (start != buffer && *start)
1979 /* malformed string if we didn't get anything */
1980 if (!*frac && !*whole)
1987 * Parses a numeric string which can contain a whole and fraction portion
1988 * into a __u64. Accepts a multiplier to apply to the value parsed. Also
1989 * allows the string to have a unit at the end. The function handles
1990 * wrapping of the final unsigned value.
1992 static int str_to_u64_parse(char *buffer, unsigned long count,
1993 __u64 *val, __u64 def_mult, bool allow_units)
1997 unsigned int frac_d = 1;
1998 __u64 wrap_indicator = ULLONG_MAX;
2003 unsigned int base = 10;
2005 rc = preprocess_numeric_str(buffer, &mult, def_mult, allow_units,
2006 &strwhole, &strfrac, &base);
2016 /* the multiplier limits how large the value can be */
2017 wrap_indicator = div64_u64(wrap_indicator, mult);
2020 rc = kstrtoull(strwhole, base, &whole);
2024 if (whole > wrap_indicator)
2031 if (strlen(strfrac) > 10)
2034 rc = kstrtoull(strfrac, base, &frac);
2038 /* determine power of fractional portion */
2044 /* fractional portion is too large to perform calculation */
2045 if (frac > wrap_indicator)
2049 do_div(frac, frac_d);
2052 /* check that the sum of whole and fraction fits in u64 */
2053 if (whole > (ULLONG_MAX - frac))
2056 *val = whole + frac;
2062 * This function parses numeric/hex strings into __s64. It accepts a multiplier
2063 * which will apply to the value parsed. It also can allow the string to
2064 * have a unit as the last character. The function handles overflow/underflow
2065 * of the signed integer.
2067 static int str_to_s64_internal(const char __user *buffer, unsigned long count,
2068 __s64 *val, __u64 def_mult, bool allow_units)
2072 unsigned int offset = 0;
2073 int signed sign = 1;
2074 __u64 max = LLONG_MAX;
2077 if (count > (sizeof(kernbuf) - 1))
2080 if (copy_from_user(kernbuf, buffer, count))
2083 kernbuf[count] = '\0';
2085 /* keep track of our sign */
2086 if (*kernbuf == '-') {
2089 /* equivalent to max = -LLONG_MIN, avoids overflow */
2093 rc = str_to_u64_parse(kernbuf + offset, count - offset,
2094 &tmp, def_mult, allow_units);
2098 /* check for overflow/underflow */
2102 *val = (__s64)tmp * sign;
2108 * Convert a user string into a signed 64 bit number. This function produces
2109 * an error when the value parsed from the string times multiplier underflows or
2110 * overflows. This function only accepts strings that contains digits, an
2111 * optional decimal, and a char representing a unit at the end. If a unit is
2112 * specified in the string, the multiplier provided by the caller is ignored.
2113 * This function can also accept hexadecimal strings which are prefixed with
2116 * \param[in] buffer string consisting of numbers, a decimal, and a unit
2117 * \param[in] count buffer length
2118 * \param[in] val if successful, the value represented by the string
2119 * \param[in] defunit default unit if string doesn't contain one
2121 * \retval 0 on success
2122 * \retval negative number on error
2124 int lprocfs_str_with_units_to_s64(const char __user *buffer,
2125 unsigned long count, __s64 *val, char defunit)
2130 if (defunit != '1') {
2131 rc = get_mult(defunit, &mult);
2136 return str_to_s64_internal(buffer, count, val, mult, true);
2138 EXPORT_SYMBOL(lprocfs_str_with_units_to_s64);
2140 char *lprocfs_strnstr(const char *s1, const char *s2, size_t len)
2149 if (!memcmp(s1, s2, l2))
2155 EXPORT_SYMBOL(lprocfs_strnstr);
2158 * Find the string \a name in the input \a buffer, and return a pointer to the
2159 * value immediately following \a name, reducing \a count appropriately.
2160 * If \a name is not found the original \a buffer is returned.
2162 char *lprocfs_find_named_value(const char *buffer, const char *name,
2166 size_t buflen = *count;
2168 /* there is no strnstr() in rhel5 and ubuntu kernels */
2169 val = lprocfs_strnstr(buffer, name, buflen);
2171 return (char *)buffer;
2173 val += strlen(name); /* skip prefix */
2174 while (val < buffer + buflen && isspace(*val)) /* skip separator */
2178 while (val < buffer + buflen && isalnum(*val)) {
2183 return val - *count;
2185 EXPORT_SYMBOL(lprocfs_find_named_value);
2187 int ldebugfs_seq_create(struct dentry *parent, const char *name, umode_t mode,
2188 const struct file_operations *seq_fops, void *data)
2190 struct dentry *entry;
2192 /* Disallow secretly (un)writable entries. */
2193 LASSERT((!seq_fops->write) == (!(mode & 0222)));
2195 entry = debugfs_create_file(name, mode, parent, data, seq_fops);
2196 if (IS_ERR_OR_NULL(entry))
2197 return entry ? PTR_ERR(entry) : -ENOMEM;
2201 EXPORT_SYMBOL_GPL(ldebugfs_seq_create);
2203 int lprocfs_seq_create(struct proc_dir_entry *parent,
2206 const struct file_operations *seq_fops,
2209 struct proc_dir_entry *entry;
2212 /* Disallow secretly (un)writable entries. */
2213 LASSERT((seq_fops->write == NULL) == ((mode & 0222) == 0));
2215 entry = proc_create_data(name, mode, parent, seq_fops, data);
2222 EXPORT_SYMBOL(lprocfs_seq_create);
2224 int lprocfs_obd_seq_create(struct obd_device *dev,
2227 const struct file_operations *seq_fops,
2230 return (lprocfs_seq_create(dev->obd_proc_entry, name,
2231 mode, seq_fops, data));
2233 EXPORT_SYMBOL(lprocfs_obd_seq_create);
2235 void lprocfs_oh_tally(struct obd_histogram *oh, unsigned int value)
2237 if (value >= OBD_HIST_MAX)
2238 value = OBD_HIST_MAX - 1;
2240 spin_lock(&oh->oh_lock);
2241 oh->oh_buckets[value]++;
2242 spin_unlock(&oh->oh_lock);
2244 EXPORT_SYMBOL(lprocfs_oh_tally);
2246 void lprocfs_oh_tally_log2(struct obd_histogram *oh, unsigned int value)
2248 unsigned int val = 0;
2250 if (likely(value != 0))
2251 val = min(fls(value - 1), OBD_HIST_MAX);
2253 lprocfs_oh_tally(oh, val);
2255 EXPORT_SYMBOL(lprocfs_oh_tally_log2);
2257 unsigned long lprocfs_oh_sum(struct obd_histogram *oh)
2259 unsigned long ret = 0;
2262 for (i = 0; i < OBD_HIST_MAX; i++)
2263 ret += oh->oh_buckets[i];
2266 EXPORT_SYMBOL(lprocfs_oh_sum);
2268 void lprocfs_oh_clear(struct obd_histogram *oh)
2270 spin_lock(&oh->oh_lock);
2271 memset(oh->oh_buckets, 0, sizeof(oh->oh_buckets));
2272 spin_unlock(&oh->oh_lock);
2274 EXPORT_SYMBOL(lprocfs_oh_clear);
2276 ssize_t lustre_attr_show(struct kobject *kobj,
2277 struct attribute *attr, char *buf)
2279 struct lustre_attr *a = container_of(attr, struct lustre_attr, attr);
2281 return a->show ? a->show(kobj, attr, buf) : 0;
2283 EXPORT_SYMBOL_GPL(lustre_attr_show);
2285 ssize_t lustre_attr_store(struct kobject *kobj, struct attribute *attr,
2286 const char *buf, size_t len)
2288 struct lustre_attr *a = container_of(attr, struct lustre_attr, attr);
2290 return a->store ? a->store(kobj, attr, buf, len) : len;
2292 EXPORT_SYMBOL_GPL(lustre_attr_store);
2294 const struct sysfs_ops lustre_sysfs_ops = {
2295 .show = lustre_attr_show,
2296 .store = lustre_attr_store,
2298 EXPORT_SYMBOL_GPL(lustre_sysfs_ops);
2300 int lprocfs_obd_max_pages_per_rpc_seq_show(struct seq_file *m, void *data)
2302 struct obd_device *dev = data;
2303 struct client_obd *cli = &dev->u.cli;
2305 spin_lock(&cli->cl_loi_list_lock);
2306 seq_printf(m, "%d\n", cli->cl_max_pages_per_rpc);
2307 spin_unlock(&cli->cl_loi_list_lock);
2310 EXPORT_SYMBOL(lprocfs_obd_max_pages_per_rpc_seq_show);
2312 ssize_t lprocfs_obd_max_pages_per_rpc_seq_write(struct file *file,
2313 const char __user *buffer,
2314 size_t count, loff_t *off)
2316 struct obd_device *dev =
2317 ((struct seq_file *)file->private_data)->private;
2318 struct client_obd *cli = &dev->u.cli;
2319 struct obd_connect_data *ocd = &cli->cl_import->imp_connect_data;
2323 rc = lprocfs_str_with_units_to_s64(buffer, count, &val, '1');
2329 /* if the max_pages is specified in bytes, convert to pages */
2330 if (val >= ONE_MB_BRW_SIZE)
2333 LPROCFS_CLIMP_CHECK(dev);
2335 chunk_mask = ~((1 << (cli->cl_chunkbits - PAGE_SHIFT)) - 1);
2336 /* max_pages_per_rpc must be chunk aligned */
2337 val = (val + ~chunk_mask) & chunk_mask;
2338 if (val == 0 || (ocd->ocd_brw_size != 0 &&
2339 val > ocd->ocd_brw_size >> PAGE_SHIFT)) {
2340 LPROCFS_CLIMP_EXIT(dev);
2343 spin_lock(&cli->cl_loi_list_lock);
2344 cli->cl_max_pages_per_rpc = val;
2345 client_adjust_max_dirty(cli);
2346 spin_unlock(&cli->cl_loi_list_lock);
2348 LPROCFS_CLIMP_EXIT(dev);
2351 EXPORT_SYMBOL(lprocfs_obd_max_pages_per_rpc_seq_write);
2353 ssize_t short_io_bytes_show(struct kobject *kobj, struct attribute *attr,
2356 struct obd_device *dev = container_of(kobj, struct obd_device,
2358 struct client_obd *cli = &dev->u.cli;
2361 spin_lock(&cli->cl_loi_list_lock);
2362 rc = sprintf(buf, "%d\n", cli->cl_max_short_io_bytes);
2363 spin_unlock(&cli->cl_loi_list_lock);
2366 EXPORT_SYMBOL(short_io_bytes_show);
2368 /* Used to catch people who think they're specifying pages. */
2369 #define MIN_SHORT_IO_BYTES 64U
2371 ssize_t short_io_bytes_store(struct kobject *kobj, struct attribute *attr,
2372 const char *buffer, size_t count)
2374 struct obd_device *dev = container_of(kobj, struct obd_device,
2376 struct client_obd *cli = &dev->u.cli;
2380 LPROCFS_CLIMP_CHECK(dev);
2382 rc = kstrtouint(buffer, 0, &val);
2386 if (val && (val < MIN_SHORT_IO_BYTES || val > OBD_MAX_SHORT_IO_BYTES))
2387 GOTO(out, rc = -ERANGE);
2391 spin_lock(&cli->cl_loi_list_lock);
2392 if (val > (cli->cl_max_pages_per_rpc << PAGE_SHIFT))
2395 cli->cl_max_short_io_bytes = val;
2396 spin_unlock(&cli->cl_loi_list_lock);
2399 LPROCFS_CLIMP_EXIT(dev);
2402 EXPORT_SYMBOL(short_io_bytes_store);
2404 int lprocfs_wr_root_squash(const char __user *buffer, unsigned long count,
2405 struct root_squash_info *squash, char *name)
2408 char kernbuf[64], *tmp, *errmsg;
2409 unsigned long uid, gid;
2412 if (count >= sizeof(kernbuf)) {
2413 errmsg = "string too long";
2414 GOTO(failed_noprint, rc = -EINVAL);
2416 if (copy_from_user(kernbuf, buffer, count)) {
2417 errmsg = "bad address";
2418 GOTO(failed_noprint, rc = -EFAULT);
2420 kernbuf[count] = '\0';
2422 /* look for uid gid separator */
2423 tmp = strchr(kernbuf, ':');
2425 errmsg = "needs uid:gid format";
2426 GOTO(failed, rc = -EINVAL);
2432 if (kstrtoul(kernbuf, 0, &uid) != 0) {
2434 GOTO(failed, rc = -EINVAL);
2438 if (kstrtoul(tmp, 0, &gid) != 0) {
2440 GOTO(failed, rc = -EINVAL);
2443 squash->rsi_uid = uid;
2444 squash->rsi_gid = gid;
2446 LCONSOLE_INFO("%s: root_squash is set to %u:%u\n",
2447 name, squash->rsi_uid, squash->rsi_gid);
2455 CWARN("%s: failed to set root_squash to \"%s\", %s, rc = %d\n",
2456 name, kernbuf, errmsg, rc);
2459 CWARN("%s: failed to set root_squash due to %s, rc = %d\n",
2463 EXPORT_SYMBOL(lprocfs_wr_root_squash);
2466 int lprocfs_wr_nosquash_nids(const char __user *buffer, unsigned long count,
2467 struct root_squash_info *squash, char *name)
2470 char *kernbuf = NULL;
2472 struct list_head tmp;
2477 errmsg = "string too long";
2478 GOTO(failed, rc = -EINVAL);
2481 OBD_ALLOC(kernbuf, count + 1);
2483 errmsg = "no memory";
2484 GOTO(failed, rc = -ENOMEM);
2486 if (copy_from_user(kernbuf, buffer, count)) {
2487 errmsg = "bad address";
2488 GOTO(failed, rc = -EFAULT);
2490 kernbuf[count] = '\0';
2492 if (count > 0 && kernbuf[count - 1] == '\n')
2495 if ((len == 4 && strncmp(kernbuf, "NONE", len) == 0) ||
2496 (len == 5 && strncmp(kernbuf, "clear", len) == 0)) {
2497 /* empty string is special case */
2498 down_write(&squash->rsi_sem);
2499 if (!list_empty(&squash->rsi_nosquash_nids))
2500 cfs_free_nidlist(&squash->rsi_nosquash_nids);
2501 up_write(&squash->rsi_sem);
2502 LCONSOLE_INFO("%s: nosquash_nids is cleared\n", name);
2503 OBD_FREE(kernbuf, count + 1);
2507 INIT_LIST_HEAD(&tmp);
2508 if (cfs_parse_nidlist(kernbuf, count, &tmp) <= 0) {
2509 errmsg = "can't parse";
2510 GOTO(failed, rc = -EINVAL);
2512 LCONSOLE_INFO("%s: nosquash_nids set to %s\n",
2514 OBD_FREE(kernbuf, count + 1);
2517 down_write(&squash->rsi_sem);
2518 if (!list_empty(&squash->rsi_nosquash_nids))
2519 cfs_free_nidlist(&squash->rsi_nosquash_nids);
2520 list_splice(&tmp, &squash->rsi_nosquash_nids);
2521 up_write(&squash->rsi_sem);
2527 CWARN("%s: failed to set nosquash_nids to \"%s\", %s rc = %d\n",
2528 name, kernbuf, errmsg, rc);
2529 OBD_FREE(kernbuf, count + 1);
2531 CWARN("%s: failed to set nosquash_nids due to %s rc = %d\n",
2536 EXPORT_SYMBOL(lprocfs_wr_nosquash_nids);
2538 #endif /* CONFIG_PROC_FS*/